U.S. patent number 3,695,662 [Application Number 05/073,312] was granted by the patent office on 1972-10-03 for latch for vehicle doors.
This patent grant is currently assigned to Atwood Vacuum Machine Company. Invention is credited to Leonard K. Ploughman.
United States Patent |
3,695,662 |
Ploughman |
October 3, 1972 |
**Please see images for:
( Certificate of Correction ) ** |
LATCH FOR VEHICLE DOORS
Abstract
A free-wheeling and concealed latch for a vehicle door includes
a force transmitting connector pin mounted for controlled floating
within slots formed in a locking lever and a contactor, the locking
lever being operable to shift the pin within the slot in the
contactor between positions coupling and uncoupling the contactor
with a pawl for releasing the latch. When the connector pin is in
its coupling position, actuation of the contactor causes the pin to
shift in one portion of the slot in the locking lever to release
the pawl and, when the pin is in its uncoupling position, actuation
of the contactor causes the pin to shift within a different portion
of the locking lever slot and to pass by the pawl without releasing
the latter so that the contactor free-wheels to leave the latch in
a locked condition. In one embodiment, the latch is restored
automatically to an unlocked condition when the door is closed
unless the contactor is first actuated to place the connector pin
in a predetermined position in the locking lever slot. Also
disclosed are (1) a unique retaining arrangement for preventing the
latching element of the latch from tearing out of the latch base in
case of an accident; (2) a simplified mounting for a
striker-engaging wedge; and (3) a novel arrangement responsive to
the position of the wedge for signaling if the door is not fully
closed and latched.
Inventors: |
Ploughman; Leonard K.
(Rockford, IL) |
Assignee: |
Atwood Vacuum Machine Company
(Rockford, IL)
|
Family
ID: |
22113004 |
Appl.
No.: |
05/073,312 |
Filed: |
September 18, 1970 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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751194 |
Aug 8, 1968 |
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Current U.S.
Class: |
292/216;
292/DIG.26 |
Current CPC
Class: |
E05B
85/243 (20130101); Y10S 292/26 (20130101); E05B
77/18 (20130101); Y10T 292/1047 (20150401) |
Current International
Class: |
E05B
65/32 (20060101); E05B 65/20 (20060101); E05c
003/26 () |
Field of
Search: |
;292/280,198,216 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Moore; Richard E.
Parent Case Text
CROSS-REFERENCE TO A RELATED APPLICATION
This application is a continuation-in-part of my copending
application Ser. No. 751,194, filed Aug. 8, 1968, and now
abandoned.
Claims
I claim as my invention:
1. In a latch for a door swingable into a fully closed position
with respect to a frame, said latch having a base, a latching
element mounted on said base to move between latched and unlatched
positions, latching mechanism selectively operable to hold said
latching element in said latched position and releasable to free
the latching element for movement to said unlatched position, the
improvement in said latch comprising, an actuator formed with an
elongated slot and mounted on said base for movement between normal
and operated positions, a locking member disposed side-by-side with
said actuator and mounted on said base for movement between
unlocked and locked positions, said locking member being formed
with a slot with portions of the two slots registering with one
another in all positions of said actuator and said locking member,
a connector extending through the two slots and slidable within
said elongated slot between positions coupling and uncoupling said
actuator with said latching mechanism in response to movement of
said locking member between said unlocked and locked positions,
said connector, when in said coupling position, sliding within said
slot in said locking member in response to movement of said
actuator to said operated position and engaging the latching
mechanism to release the latter from said latching element, and
said connector, when in said uncoupling position, sliding within
said slot in said locking member and making an idle movement with
respect to said latching mechanism upon movement of said actuator
to said operated position whereby the actuator free-wheels without
releasing the latching mechanism from the latching element.
2. A latch as defined in claim 1 in which said connector comprises
a cylindrical pin guided in said slots for controlled floating in
response to movement of said locking member and said actuator.
3. A latch as defined in claim 1 further including means operable
to move said locking member to the unlocked position when the
latching element is moved from said unlatched position to said
latched position with the locking member disposed in the locked
position, and means operable to return the locking member to the
locked position in response to movement of the actuator to the
normal position after the latching element has been moved from said
unlatched position to said latched position with the locking member
initially disposed in said locked position and with the actuator
disposed in said operated position.
4. A latch as defined in claim 3 in which said last-mentioned means
include said connector and also include a spring biasing said
actuator toward said normal position.
5. A latch as defined in claim 1 further including means operable
to move said locking member to the unlocked position when the
latching element is moved from said unlatched position to said
latched position with the locking member disposed in the locked
position and with the actuator disposed in said normal position,
and means operable to hold said locking member in said locked
position after return of said actuator to said normal position
following movement of said latching element from said unlatched
position to said latched position with the locking member initially
disposed in said locked position and with said actuator disposed in
said operated position.
6. A latch as defined in claim 1 further including a pin connected
to and projecting from said base and mounting said latching element
for turning between said latched and unlatched positions about a
predetermined axis, a retainer fixed to and projecting from said
base toward one side of said latching element, and a catch
projecting from said one side of said latching element and disposed
radially of said retainer in face-to-face relation with the latter
to leave the latching element free to turn while being engageable
with said retainer upon initial radial movement of said pin and
said latching element relative to said base thereby to restrict
further radial movement of the pin and latching element.
7. A latch as defined in claim 1 further including a wedge located
on said base to engage the frame and slide in one direction along a
predetermined path on the base as an incident to closing of the
door, a spring connected between said base and said wedge to urge
the latter to slide in the opposite direction along said path and
to press the wedge into engagement with said frame, and
complementary guides formed integrally with said base and said
wedge and interfitting slidably with one another to guide the wedge
along said path.
8. A latch as defined in claim 7 further including means on said
base positioned in said path for engagement with said wedge upon
sliding of the latter through a predetermined distance in said one
direction and operable as an incident to such engagement to produce
an electrical signal indicative that the door is in the fully
closed position.
9. In a latch having a base, a latching element fulcrumed on said
base to turn between latched and unlatched positions, a ratchet
turnable with said latching element, a pawl engageable with said
ratchet to hold the latching element in said latched position and
releasable from the ratchet to free the latching element for
turning to said unlatched position, the improvement in said latch
comprising, an actuator formed with an elongated slot and mounted
on said base for turning about a first axis between normal and
operated positions, a connector pin guided in said slot for sliding
lengthwise of the slot between positions coupling and uncoupling
said actuator with said pawl, said pin being operable in said
coupling position to move into engagement with said pawl and
release the latter from said ratchet in response to movement of
said actuator to said operated position thereby to free the
latching element for turning to said unlatched position, said
connector pin, when in said uncoupling position, making an idle
movement with respect to said pawl when said actuator is moved to
said operated position whereby the actuator free-wheels without
releasing the latching element, a locking lever mounted on said
base in side-by-side relation with said actuator for turning
between unlocked and locked positions about a second axis extending
generally parallel to said first axis, a curved slot formed in said
locking lever and receiving said connector pin to shift the latter
between said coupling and uncoupling positions in response to the
locking lever being turned between said unlocked and locked
positions, and said slot in said locking lever being shaped to
accommodate movement of said connector pin when the pin is in
either said coupling or uncoupling position and is shifted as a
result of said actuator being moved to said operated position.
10. A latch as defined in claim 9 in which said slot in said
locking lever includes first and second portions arcuately curved
about different centers, said first portion curving arcuately about
said first axis when said locking lever is disposed in said
unlocked position, and said second portion curving arcuately about
said first axis when said locking lever is in said locked
position.
11. A latch as defined in claim 9 in which said pawl includes a
projecting lug, said connector pin underlying said lug when in said
coupling position and being spaced laterally from the lug when in
said uncoupling position.
12. In a latch having a base, a latching element fulcrumed on said
base to turn between latched and unlatched positions, a ratchet
turnable with said latching element, a pawl member turnable about a
first axis into and out of engagement with said ratchet to hold
said latching element in said latched position and to release the
latching element for turning to said unlatched position, an
actuator member disposed side-by-side with said pawl member and
mounted on said base for turning between normal and operated
positions about said first axis, an elongated slot formed in one of
said members, a locking lever disposed side-by-side with at least
one of said members and mounted on said base for turning between
unlocked and locked positions about a second and substantially
parallel axis, said locking lever also being formed with a slot
with portions of the two slots registering with one another in both
positions of said locking lever, a connector extending through the
two slots and slidable within said elongated slot between positions
coupling and uncoupling said pawl member with said actuator member
in response to movement of said locking lever between said unlocked
and locked positions, said connector being operable in said
coupling position to slide within a first portion of said slot in
said locking lever and transmit to said pawl member the motion
undertaken by said actuator member in moving to said operated
position thereby to shift the pawl member out of engagement with
the ratchet, said connector, when in said uncoupling position,
disconnecting said actuator member and said pawl member whereby the
actuator member makes an idle movement with respect to the pawl
member when moved to said operated position and free-wheels without
shifting the pawl member out of engagement with the ratchet.
13. In a latch having a base, a latching element mounted on said
base to move between latched and unlatched positions, latching
mechanism selectively operable to hold said latching element in
said latched position and releasable to free the latching element
for movement to said unlatched position, the improvement in said
latch comprising, an actuator formed with an elongated slot and
mounted on said base for movement between normal and operated
positions, a locking lever disposed side-by-side with said actuator
and mounted on said base for movement between unlocked and locked
positions, said locking lever also being formed with a slot with
portions of the two slots registering with one another in all
positions of said actuator and said locking lever, a connector
extending through the two slots and slidable within said elongated
slot between positions coupling and uncoupling said actuator with
said latching mechanism in response to movement of said locking
lever between said unlocked and locked positions, said connector,
when said locking lever is in said unlocked position, sliding
within a first portion of said slot in said locking lever in
response to movement of said actuator to said operated position and
engaging the latching mechanism to release the latter from said
latching element, said connector, when said locking lever is in
said locked position, sliding within a second portion of said slot
in said locking lever and making an idle movement with respect to
said latching mechanism upon movement of said actuator to said
operated position whereby the actuator free-wheels without
releasing the latching mechanism from the latching element,
kick-out means operable to move said locking lever to said unlocked
position when said latching element is moved from said unlatched
position to said latched position with said locking lever disposed
in said locked position, a pocket formed in the second portion of
said slot in said locking lever, said connector moving into
registry with said pocket when said actuator is in said operated
position and when said locking lever is moved to said unlocked
position as a result of said latching element being moved to said
latched position, and said connector thereafter upon movement of
said actuator to said normal position lodging in said pocket and
bearing against an edge of the pocket to return said locking lever
to said locked position.
14. A latch as defined in claim 13 further including a spring on
said base biasing said actuator toward said normal position and
operable to press said connector against the edge of said
pocket.
15. A latch as defined in claim 13 in which said pin is located out
of registry with said pocket when said locking lever is in said
locked position and when said actuator is in said normal
position.
16. A latch as defined in claim 13 in which said kick-out means
comprises a member on the side of said latching element and movable
with the latter, said locking lever being formed with an integral
portion projecting into the path of said member when the locking
lever is in said locked position.
Description
BACKGROUND OF THE INVENTION
This invention relates to a latch of the type commonly used on the
doors of automotive vehicles and, more particularly, to a so-called
free-wheeling latch which preferably is concealed with all of the
parts of the latch housed within the vehicle door. Such a latch
generally includes a base carrying a latching element which is
engageable with the frame of the vehicle to hold the door in a
closed position, a latching mechanism operable to hold the latching
element in a latched position and releasable from the latching
element to free the latter for movement to an unlatched position,
and a manually operable actuator accessible from the outside of the
door and normally effective, upon being shifted to an operated
position, to trip the latching mechanism and release the latching
element from the frame to permit opening of the door.
A force transmitting connector usually is attached to the outside
actuator and shifts with the latter to transfer the motion of the
actuator to the latching mechanism to effect release of the
latching element. To lock the door, the transmitting connector is
shifted relative to the outside actuator to a position uncoupling
the actuator and the latching mechanism and, as a result, the
actuator simply free-wheels or makes an idle motion with respect to
the latching mechanism when the actuator is operated with the latch
in a locked condition. Conventionally, the transmitting connector
also is attached to a locking lever and is shifted between
positions coupling and uncoupling the actuator and the latching
mechanism as the locking lever is moved between unlocked and locked
positions from the outside of the vehicle by a key or from the
inside of the vehicle by either a remote handle, a garnish button
or other inside member. A free-wheeling latch of this general type
is disclosed in U.S. Pat. No. 3,511,526.
Summary of the Invention
The primary object of the present invention is to provide a new and
improved free-wheeling latch of the above character which, when
compared with prior latches of the same general type, requires a
fewer number of parts and, at the same time, is of simpler, less
expensive and more compact construction. In large, this is achieved
through the provision of a novel and simplified transmitting
connector which is mounted for controlled floating in uniquely
designed slots formed in the locking lever and preferably in the
actuator to permit the necessary shifting of the connector by the
locking lever and the actuator without requiring separate parts to
mount the connector on the actuator and locking lever for such
shifting. As a result of the transmitting connector floating in the
slots, the number and complexity of the parts needed for mounting
the connector are reduced and the connector itself may be reduced
in size thus simplifying the latch and enabling its manufacture in
a more compact package.
A further object of the invention is to maintain the basic
compactness and simplicity of the latch while adapting the latch
for keyless locking from the outside of the vehicle if two separate
manual operations are performed to preset the latch prior to
closing the door.
Still another object is to provide a latch with a slidable wedge
for engaging the vehicle frame along with the latching element, and
to simplify and reduce the cost of mounting the wedge for sliding
on the latch base. An additional object is to utilize the sliding
movement of the wedge to cause a signal to be produced when the
door is fully closed and latched.
The invention also resides in the provision of a novel safety catch
on the latching element for engaging a retainer on the latch base
to prevent the latching element from being torn away from the base
by the severe forces imposed on the latching element when the
vehicle is involved in an accident.
Other objects and advantages of the invention will become apparent
from the following detailed description taken in conjunction with
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a fragmentary cross-section taken through a vehicle door
equipped with one embodiment of a latch incorporating the novel
features of the present invention.
FIG. 2 is a fragmentary cross-section taken substantially along the
line 2--2 of FIG. 1 and showing the latch in a locked and latched
condition.
FIG. 3 is a view similar to FIG. 2 but showing the actuator
free-wheeling upon being moved to its operated position.
FIG. 4 is a fragmentary cross-section taken substantially along the
line 4--4 of FIG. 2.
FIG. 5 is a view similar to FIG. 2 but showing the latch in an
unlocked and latched condition.
FIG. 6 is a view similar to FIG. 5 but showing the latch being
tripped with the latching element being released from the vehicle
frame.
FIG. 7 is a side elevational view of the latch as seen from the
right in FIG. 5.
FIG. 8 is an enlarged fragmentary cross-section taken substantially
along the line 8--8 of FIG. 5.
FIG. 9 is an enlarged view of the actuator and the locking lever
and showing the parts in a locked condition.
FIG. 10 is a view similar to FIG. 9 but showing the parts in an
unlocked condition.
FIG. 11 is a fragmentary cross-section taken substantially along
the line 11--11 of FIG. 9.
FIG. 12 is a fragmentary cross-section taken substantially along
the line 12--12 of FIG. 10.
FIGS. 13 to 23 illustrate a second embodiment of a latch
incorporating the novel features of the present invention, FIG. 13
being a view similar to FIG. 6 but showing the second embodiment
with the door in an open position and with one of two necessary
manual operations having been performed on the latch to preset the
latter for keyless locking.
FIG. 14 is a view of parts illustrated in FIG. 13 but showing the
parts with the second manual operation having been performed to
preset the latch for keyless locking.
FIG. 15 is a view similar to FIG. 13 but showing the door being
closed after the latch has been preset for keyless locking.
FIG. 16 is a view similar to FIG. 15 but showing the door in a
fully closed position and showing the parts of the latch in the
positions they assume just prior to return on the outside actuator
to its normal position.
FIG. 17 is a view similar to FIG. 16 but showing the latch in a
fully locked condition.
FIG. 18 is a view similar to FIG. 13 but showing the condition of
the parts if an attempt is made to lock the latch with the door
only partially closed.
FIG. 19 is a side elevational view of the latch shown in FIG. 13 as
seen from the left of FIG. 13.
FIG. 20 is a view similar to FIG. 15 with the parts in the same
positions as in FIG. 15 but showing the latch base more
clearly.
FIG. 21 is an enlarged fragmentary cross-section taken
substantially along the line 21--21 of FIG. 20.
FIG. 22 is a view similar to FIG. 21 but showing the parts in moved
positions.
FIG. 23 is a fragmentary perspective view of the latch base shown
in FIG. 22.
FIGS. 24 to 30 illustrate a third embodiment of a latch
incorporating the novel features of the invention, FIG. 24 being a
view showing the third embodiment in an unlocked and latched
condition.
FIG. 25 is a fragmentary view similar to FIG. 24 but showing the
latch in an unlatched condition and with the first manual operation
having been performed on the latch to preset the latter for keyless
locking.
FIG. 26 is a cross-section taken substantially along the line
26--26 of FIG. 24.
FIG. 27 is a view similar to FIG. 25 but showing the parts with the
second manual operation having been performed to preset the latch
for keyless locking.
FIG. 28 is a front elevation of part of the latching mechanism of
the latch shown in FIGS. 24 to 27.
FIG. 29 is a front elevation of the actuator of the latch shown in
FIGS. 24 to 27.
FIG. 30 is a front elevation of the locking lever of the latch
shown in FIGS. 24 to 27.
Description of the Preferred Embodiments
As shown in the drawings for purposes of illustration, the
invention is embodied in a latch 20 particularly adapted for use
with the door 21 of an automotive vehicle and including a pivoted
latching element 23 (FIG. 2) carried by the door and coacting with
a cylindrical striker pin 24 mounted on a post 25 of the vehicle
frame to hold the door in a tightly closed position. In this
instance, the latching element is a fork-like member formed with a
recess 26 (FIG. 6) for receiving the striker. As the door is swung
closed, contact of an edge 27 of the recess with the striker turns
the latching element counterclockwise from an unlatched position
shown in FIG. 6 to a safety or secondary latched position (not
shown) and then to a fully latched position shown in FIG. 5 to
prevent separation of the latching element from the striker and
thus hold the door closed.
Herein, the latching element 23 is journaled for rotation
intermediate the ends of a fixed horizontal pin 29 (FIG. 2) which
is anchored at its ends in holes formed through a pair of
vertically extending metal base plates 31 and 32 (FIGS. 1, 2 and 7)
spaced from and fastened to each other and housed within the door
21. The base plate 31 is attached to the end wall 33 of the door
and is formed with flanges 35 and 36 extending between the two
plates and along opposite side walls of the door. Most of the parts
of the latch are encased within the enclosure formed by the plates
and the flanges, and the entire latch is housed within the door
such that the latch is concealed without any parts thereof
projecting beyond the end wall of the door. A recess 37 (FIG. 3)
formed in the base plate 31 and an alined recess (not shown) formed
in the door end wall expose the recess 26 of the latching element
for latching with the striker 24 when the door is swung to the
closed position.
Because of the recess 37, the base plate 31 is left with only a
relatively narrow strip 39 (FIG. 3) of metal existing between the
pin 29 and the closed end of the recess. During a collision when
the vehicle door 21 tends to spring open, severe forces are exerted
on the latching element 23 and sometimes pull the pin 29 relative
to the base plate 31 in a radial direction (as indicated by the
arrow 40 in FIG. 3) such that the pin tends to rip through the
narrow metal strip 39 of the base plate. If the pin does tear
through the base plate, the door becomes free to open.
According to one aspect of the invention, the likelihood of the pin
29 tearing through the base plate 31 during a collision is lessened
by providing a safety catch 41 (FIGS. 3 and 8) on one side of the
latching element 23 to engage a retainer 43 on the opposing side of
the base plate 31 as an incident to initial radial movement of the
pin 29 and the latching element 23 relative to the base plate. As a
result of engagement of the catch with the retainer, continued
radial movement of the pin and the latching element is prevented or
at least restricted thereby to reduce the danger of the pin ripping
through the base plate and permitting the door 21 to spring
open.
More specifically and as shown in FIGS. 3 and 8, the safety catch
41 herein is in the form of an arcuate rib which advantageously is
formed on the side of the latching element 23 as an incident to
stamping of the latching element from a blank of metal. The rib is
curved about the axis of rotation of the latching element and
extends around an arc of approximately 90 degrees opposite the
recess 26 in projecting relation with the side of the latching
element along the peripheral edge thereof.
While the retainer 43 could be an enlarged washer welded to the
inside of the base plate 31 in encircling relation with the pin 29,
it preferably, for purposes of reducing the cost of the latch, is
in the form of an arcuate bead formed integrally with the base
plate. The retainer bead 43 is formed quite simply during stamping
of the base plate 31 by indenting a groove 44 (FIG. 8) in the outer
side of the base plate to cause inward displacement of the metal to
the inside of the plate to create the bead. The bead also is curved
about the axis of rotation of the latching element 23 and is
disposed just radially inwardly of the rib 41 in underlying
face-to-face relation with the latter when the latching element is
in its latched position. Because of the arcuate curvatures of the
rib and bead, the latching element is free to turn about the pin 29
between its latched and unlatched positions without any
interference occurring between the rib and bead.
If the vehicle is involved in an accident and forces are exerted on
the latch 20 tending to move the latching element 23 and the pin 29
radially relative to the base plate 31 in the general direction of
the arrow 40 (FIG. 3), the underside of the rib 41 presses against
and catches the opposing side of the bead 43 upon initial movement
of the pin and thereafter limits any further movement of the pin to
restrict tearing of the pin through the narrow metal strip 39. The
rib and bead thus serve to reinforce the base plate and yet may be
formed simply and inexpensively during stamping of the plate and
the latching element. Somewhat greater strength is obtained when a
separate washer is used in place of the bead to engage the rib but
the cost of the latch is increased since the washer must be welded
to the base plate in a separate operation.
In addition to being held by the latching element 23, the striker
24 also is engaged on its underside by a wedge 45 (FIG. 2)
preferably made of nylon or other hard plastic material and adapted
to lodge beneath the striker so that the latter will be held on all
sides. The wedge rides on a flange 46 projecting laterally from the
base plate 32 and, as the door is closed, engages the striker and
slides progressively outwardly along the flange in a predetermined
path against the action of a coil spring 47 compressed between the
outer end of the wedge and an upturned outer end 49 of the flange.
When the door is open, the spring 47 presses the inner end of the
wedge against an upturned inner end 50 of the flange.
With most prior latches that have found commercial acceptance, the
wedge 45 has been guided for in-and-out sliding by a cylindrical
pin projected through a hole in the wedge and anchored at its ends
in holes in the ends 49 and 50 of the flange 46. The coil spring 47
then is telescoped over the guide pin between the outer end of the
wedge and the outer end 49 of the flange. Because the pin-receiving
holes in the flange ends 49 and 50 must be accurately alined with
one another to locate the guide pin properly, it has not been
feasible to form the holes as an incident to stamping the flange
46, but instead, the holes have been formed by a separate piercing
operation after the flange first has been stamped and the flange
ends bent upwardly.
In accordance with another aspect of the invention, the need for
using a pin to guide the wedge 45 and the requirement of separately
piercing the flange ends 49 and 50 are eliminated by integrally
forming complementary and interfitting guides 51 and 52 (FIG. 4) on
the base plate 32 and the wedge 45 to hold the wedge in place and
to direct the wedge for sliding along its proper path upon
engagement with the striker 24. In this instance, the guide 51 is
simply a straight elongated rib which extends along the inner side
of the base plate 32 intermediate the upper and lower surfaces of
the wedge and which is formed by indenting the outer side of the
base plate inwardly during stamping of the plate. The rib 51 fits
into the guide 52 which herein is a groove corresponding in shape
to the rib and molded into the wedge to slidably receive the rib.
Thus, as the wedge slides inwardly and outwardly, the edges of the
groove 52 ride along the rib 51 to guide the wedge and to prevent
vertical movement of the latter thereby serving the functions of
the guide pin without requiring the incorporation of such a pin
into the latch. The coil spring 47 is telescoped at its inner end
into a socket 53 (FIG. 2) molded into the outer end of the wedge
and is anchored at its outer end in a hole 54 in the flange end 49.
Because the wedge is guided by the rib 51 and the groove 52, the
location of the hole 54 is not critical and thus the hole can be
formed as an incident to stamping the flange 46 and does not have
to be pierced in a separate operation. Accordingly, the cost of the
latch is reduced since the guide pin and one manufacturing step are
eliminated.
In the assembled latch 20, the wedge 45 is sandwiched between the
latching element 23 and the base plate 32 and thus is restricted
against sidewise movement. To prevent the wedge from moving
sidewise during assembly of the latch, the wedge and the flange 46
preferably are formed with a second pair of complementary and
interfitting guides which comprise a tab 55 (FIGS. 2 and 4) molded
integrally with and depending from the bottom of the wedge and
projecting slidably into a narrow elongated slot 56 punched into
the flange. The tab engages the side edges of the slot to prevent
lateral movement of the wedge until the latch is assembled to
captivate the wedge between the base plate 32 and the latching
element.
Advantage is taken of the sliding motion of the wedge 45 as the
latter engages the striker 24 to produce a signal indicative of
whether or not the door 21 is fully closed and latched. For this
purpose, a switch contact 57 (FIG. 2) in the form of a resilient
metal strip is located below the flange 46 in the path followed by
the tab 55 and is connected by a lead 59 into an electric circuit
which includes the vehicle battery 60 (shown schematically in FIG.
2) and a warning light 61 located in the interior of the vehicle,
one side of the battery being connected to ground through the
vehicle frame. The switch contact 57 is supported cantilever
fashion by a plastic cube 63 fastened to the base flange 35 and, by
virtue of its resiliency, is urged toward the bottom of the flange
46. When the door is open and the wedge is pressed against the
flange end 50 by the spring 47 (see FIG. 6), the free end of the
contact 57 directly engages the underside of the metal flange 46
and completes a circuit energizing the warning light 61 since the
flange is grounded through the vehicle frame. The contact also
engages the flange 46 when the door is ajar with the latching
element 23 in its secondary latched position and, as a result, the
warning light remains lit to indicate only partial closure of the
door. Upon full closure of the door, however, the wedge 45 engages
the striker 24 and is slid outwardly along the flange 46
sufficiently far that the plastic tab 55 engages the free end of
the switch contact 57 to deflect and hold the latter away from the
flange and thereby break the circuit to the warning light so that
the light goes out to signal that the door is fully closed and
latched. Thus, the tab 55 is used not only to prevent sidewise
movement of the wedge but also coacts with the sliding motion
undertaken by the wedge to deflect and insulate the switch contact
from the flange 46 to enable detection of full closure of the
door.
Referring now to FIG. 2, it will be seen that an arcuate peripheral
edge of the latching element 23 is formed with a ratchet 65
comprising a pair of angularly spaced teeth 66 and 67 adapted to be
engaged by a blocking-type pawl member 69 which, together with the
ratchet, constitutes a latching mechanism. The pawl 69 is fulcrumed
on a fixed horizontal shaft 70 extending between the base plates 31
and 32 above the pin 29 and is formed with a projecting tooth 71
extending downwardly toward the ratchet 65 and engageable with the
teeth 66 and 67. The pawl is urged into engagement with the ratchet
by a torsion spring 73 (FIGS. 1 and 7) surrounding the shaft 70 and
anchored at its ends to the pawl and to the flange 36. When the
pawl engages the ratchet tooth 66, the latching element 23 is held
in its secondary latched position (not shown) and, when the pawl
engages the tooth 67, the latching element is held in its fully
latched position (FIG. 2). Clockwise turning (FIG. 2) of the pawl
69 about the shaft 70 releases the ratchet 65 and enables the
latching element to turn clockwise from the latched position shown
in FIG. 2 to the unlatched position shown in FIG. 6 to release the
striker 24 and permit opening of the door 21. A contractile spring
74 (FIG. 2) is stretched between the flange 36 and the latching
element and continuously urges the latter toward the unlatched
position so that the latching element automatically turns to such
position upon release of the pawl from the ratchet.
To release the pawl 69 from the ratchet 65 and thus unlatch the
door 21, an actuator member or contactor lever 75 (FIGS. 3 and 9)
is pivoted on the shaft 70 in side-by-side relation with the pawl
and is adapted, when swung clockwise about the shaft to an operated
position (FIG 6), to cause lifting of the pawl away from the
ratchet to release the latching element 23 for turning to its
unlatched position under the urging of the spring 74. Clockwise
swinging of the contactor 75 about the shaft 70 herein is effected
from the outside of the vehicle by turning a lever 76 (FIG. 7)
which is pivoted on the plate 32 at 77 and which is formed with a
lug 79 overlying one end portion 80 of the contactor. The lever is
connected to an outside push button (not shown) or the like by an
actuating link 81 and, in response to depression of the push
button, turns counterclockwise (FIG. 7) about the pivot 77 into
engagement with the contactor to swing the latter clockwise about
the shaft 70 to its operated position (FIG 6). The contactor may be
similarly operated from the inside of the vehicle by means of a
second lever 83 (FIG. 7) pivoted on the flange 35 and formed with a
lug 84 underlying the opposite end portion of the contactor. A link
85 connects the lever 83 to the inside door handle (not shown)
which is operable to rock the lever to cause the lug 84 to move
under and lift the adjacent end of the contactor to swing the
contactor clockwise about the shaft 70 to its operated position. To
return the contactor to its normal unoperated position, a torsion
spring 86 (FIGS. 2 and 7) surrounds the shaft 70 and is anchored at
its ends to the flange 36 and the contactor to swing the latter
counterclockwise when the outside push button or the inside handle
is released.
Coupling of the contactor 75 to the pawl 69 to trip the latch in
response to operation of the contactor is effected in the present
instance by a force transmitting connector 87 which moves with the
contactor and which normally (FIGS. 5, 6 and 10) transfers the
clockwise motion of the contactor to the pawl to swing the latter
away from the ratchet 65. To lock the latch and prevent
unauthorized opening of the door 21, the transmitting connector 87
is shifted to a position (FIGS. 2, 3 and 9) uncoupling the
contactor from the pawl so that the contactor, when actuated,
simply makes an idle motion or free-wheels with respect to the pawl
and thus is ineffective to move the pawl out of engagement with the
ratchet. The transmitting connector is shifted from its coupling
position (FIG. 10) to its uncoupling position (FIG. 9) in response
to turning of a locking lever 90 from an unlocked position to a
locked position. The locking lever, which is formed with three
angularly spaced arms 91, 92 and 93, (FIG. 9) is disposed
side-by-side with the pawl 69 and the contactor 75 and is journaled
on a stud 94 anchored to the base plate 32 and paralleling the
shaft 70. To turn the locking lever 90 between its locked and
unlocked positions shown in FIGS. 9 and 10, respectively, a garnish
button (not shown) accessible from the inside of the door is
attached to the arm 93 of the lever by a vertical rod 95. Up and
down movement of the garnish button turns the locking lever back
and forth between the unlocked and locked positions. In addition,
the latch may be unlocked from the outside of the vehicle by a key
which, upon being turned, operates through a linkage 95a to move
the locking lever to the unlocked position. A toggle spring 96
(FIG. 2) anchored between the arm 93 and the base plate 32 snaps
back and forth overcenter as the locking lever is turned between
its positions and serves to hold the lever yieldably in each of its
positions.
As mentioned above, the force transmitting connector 87 moves with
the contactor 75 when the latter is actuated and serves to release
the pawl 69 from the ratchet 65. In addition, the transmitting
connector is moved between its coupling and uncoupling positions as
the locking lever 90 is shifted between its unlocked and locked
positions. Thus, it is necessary that the transmitting connector be
attached to both the contactor and the locking lever in order that
the transmitting connector will be moved when the contactor is
actuated and when the locking lever is shifted.
According to an important aspect of the invention, the force
transmitting connector 87, instead of being attached to the
contactor 65 and the locking lever 90 by separate mounting
elements, simply floats in uniquely designed slots 97 and 98 formed
in the contactor and the locking lever, respectively. When the
contactor 65 is actuated, the edge of the slot 97 in the contactor
shifts the transmitting connector 87 within the slot 98 and into
engagement with the pawl 69. When the locking lever 90 is shifted,
the edge of the slot 98 moves the transmitting connector to either
its coupling or uncoupling position with the connector floating
within the slot 97 and relative to the contactor during such
movement. As a result of the slots, the transmitting connector may
be moved by either the contactor or the locking lever and may move
relative to both the contactor and the locking lever without
requiring additional mounting elements for producing and
accommodating the movements. Accordingly, the cost, complexity and
size of the latch are reduced.
In this instance, the slot 98 (FIG. 9) in the locking lever 90 is
formed through the arm 93 and includes upper and lower portions
which are of generally arcuate configuration but which are curved
about different centers. When the locking lever is in its locked
position (see FIG. 9), the upper portion of the slot 98 is
substantially concentric with an arc struck about the center of the
shaft 70 and, when the locking lever is in its unlocked position
(see FIG. 10), the lower portion of the slot is generally
concentric with the same arc. The slot 97 in the contactor 75 in
this instance is straight, extends generally lengthwise of the
contactor, and is located such that portions of the two slots 97,
98 register face-to-face in all positions of the locking lever and
the contactor.
As shown most clearly in FIGS. 9 and 11, the force transmitting
connector 87 herein is simply a small cylindrical pin which is
projected slidably through the slots 97 and 98 in closely spaced
relation with the edges of the slots. A washer 99 (FIG. 11) on one
end of the connector pin 87 prevents the latter from slipping out
of the slot 97 and a similar washer 100 on the other end of the pin
retains the pin in the slot 98. In the unlocked position of the
locking lever 90 (FIGS. 5 and 10), the pin 87 is disposed in its
coupling position in the lower portion of the slot 98 and in the
extreme left end of the slot 97 in underlying relation with a lug
101 (FIGS. 5 and 10) formed integrally with and projecting from the
pawl 69. Thus, when the contactor 75 is actuated and swung
clockwise about the shaft 70, the lower edge of the slot 97 engages
the pin 87 to shift the latter into contact with the underside of
the lug 101 thereby to lift or swing the pawl 69 away from the
ratchet 65 (as shown in FIG. 6 and in phantom in FIG. 10) to
release the latching element 23 from the striker 24. As the pin 87
is shifted by the contactor, it simply floats or slides within the
lower portion of the slot 98 in the locking lever 90 and, as a
result of the curvature of the lower portion, the pin neither binds
in the slot nor disturbs the position of the locking lever. Thus,
as long as the locking lever is in its unlocked position, the pin
couples the contactor to the pawl and transmits the motion of the
contactor to the pawl to release the latter when the contactor is
actuated.
When the locking lever 90 is swung counterclockwise to its locked
position (FIGS. 2 and 9) to lock the door 21, the left edge of the
slot 98 engages the connector pin 87 and slides the latter from
left to right within the slot 97 to its uncoupling position at the
extreme right end of the slot 97 as shown in FIG. 9. As the locking
lever is turned, the edges of the slot 98 slide downwardly along
the pin such that the pin, upon reaching the uncoupling position,
is disposed in the upper portion of the slot 98. In the uncoupling
position, the pin is spaced laterally from the lug 101 on the pawl
69 and no longer underlies the lug. Accordingly, when the contactor
75 is actuated to bring the lower edge of the slot 97 into lifting
engagement with the pin 87, the latter simply moves upwardly within
the slot 98 and passes by the lug 101 (as shown in FIG. 3 and in
phantom in FIG. 9) without engaging the lug to trip the pawl and
release the latching element 23. The contactor thus makes an idle
motion or free-wheels with respect to the pawl and is ineffective
to trip the latch and open the door. The door therefore is locked
and cannot be opened regardless of whether the contactor is
actuated by the outside push button or by the inside door handle.
It will be noted that the pin 87 does not bind in the slot 98 or
move the locking lever 90 when the contactor free-wheels since the
upper portion of the slot 98 curves arcuately about the axis of the
shaft 70 in the locked position of the locking lever and leaves the
pin free to swing with the contactor.
From the foregoing, it will be apparent that the novel slots 97 and
98 in the contactor 75 and the locking lever 90 enable the
connector pin 87 to move with the contactor and relative to the
locking lever to release the pawl 69 and to free-wheel and, at the
same time, enable the pin to move with the locking lever and
relative to the contactor between the coupling and uncoupling
positions for purposes of unlocking and locking the latch. Because
the connector pin floats in the slots, no other mounting elements
are necessary to support the pin for its various movements thus
simplifying the construction of the latch and reducing particularly
the thickness or fore-and-aft dimension of the latch. Moreover, the
slots permit the simple and relative small pin 87 to be used as the
force transmitting connector thereby further reducing the cost and
complexity of the latch.
Another embodiment of a free-wheeling latch incorporating
additional novel features is shown in FIGS. 13 to 19 in which parts
corresponding to the parts of the latch shown in FIGS. 1 to 12 are
indicated by the same but primed reference numerals. In this
instance, the invention contemplates maintaining the basic
simplicity described above while providing a latch 20' which is
self-cancelling in that it is set automatically in the unlocked
condition as the door is closed so as to prevent unintentional
locking of the door. The self-cancelling action, however, may be
disabled by intentionally presetting the latch by performing two
separate presetting operations on the latch prior to closing the
door thereby to permit the latch to remain in a locked condition
upon closing of the door. The latch thus is of the dual preset
type.
More specifically and referring to FIGS. 13 to 19, it will be seen
that the elements of the latch 20' are quite similar to the
corresponding elements of the latch 20 of the first embodiment. In
this instance, however, the arm 92' of the locking lever 90' is
formed with a relatively straight lower edge 105 which, in the
locked position of the locking lever (FIG. 13), projects downwardly
along one side of the latching element 23'. A kick-out lug 106 is
attached to the side of the latching element 23' and is disposed in
opposing relation with the edge 105 of the locking lever 90' when
the latching element is in its unlatched position. Thus, if the
locking lever 90' is turned to its locked position (FIG. 13) by
accidental depression of the garnish button when the door is open,
the kick-out lug 106 will engage the edge 105 of the locking lever
as the door is closed and as the latching element 23' is turned
counterclockwise to its latched position. As a result of such
engagement, the locking lever is turned clockwise about the pin 94'
to its unlocked position (the same position as in FIGS. 5 and 10),
and the right edge of the slot 98' engages the connector pin 87' to
slide the latter from right to left within the slot 97' to its
coupling position beneath the pawl lug 101'. Accidental locking of
the door thus is prevented since the latch 20' is restored
automatically to an unlocked condition if the door is closed with
the locking lever 90' having simply been set in its locked position
by depression of the garnish button.
The latch 20' will return to a locked state, however, if the
outside push button is held in a depressed condition to hold the
contactor 75' in its operated position (FIG. 15) during closing of
the door with the locking lever 90' disposed in its locked
position. When the push button is depressed, the contactor 75' is
swung clockwise about the shaft 70' by the lever 76' to raise the
connector pin 87' into the extreme upper end portion of the slot
98' as shown in FIG. 14. In this position, the pin 87' is located
alongside or in registry with an enlarged pocket 110 formed at one
side of the upper end portion of the slot 98'. Then, as the door is
closed and the latching element 23' turned to its latched position,
the kick-out lug 106 engages the edge 105 of the locking lever 90'
as before and starts turning the locking lever to its unlocked
position as shown in FIG. 15. During such turning, the right edge
of the pocket 110 in the slot 98' engages the connector pin 87' and
slides the latter from right to left in the slot 97' toward its
uncoupling position. When the locking lever 90' has been turned to
its fully unlocked position by the kick-out lug 106, the pin 87'
lodges in the pocket 110 and bears against the lower edge thereof
as shown in FIG. 16. With the door thus fully closed, the outside
push button is released to allow the contactor 75' to swing
counterclockwise about the shaft 70' under the urging of the toggle
spring 86'. During such swinging of the contactor 75', the upper
edge of the slot 97' engages the connector pin 87' and presses the
pin downwardly against the lower edge of the pocket 110. The
effective force of the torsion spring 86' is greater than that of
the spring 96' which biases the locking lever 90' to its unlocked
position and thus engagement of the pin 87' with the lower edge of
the pocket 110 causes the locking lever to return counterclockwise
to its locked position (FIG. 17) thereby shifting the pin to its
uncoupling position so that the door becomes locked and cannot be
opened without first using the key or shifting the garnish button.
Accordingly, the latch 20' unlocks automatically each time the door
is closed with the locking lever 90' in a locked position but, if
the outside push button is held in a depressed condition to keep
the contactor 75' in its operated position during closing of the
door, the locking lever is automatically returned to its locked
position to effect keyless locking of the door.
To avoid any danger of the pin 87' moving from right to left within
the slot 97' and failing to lodge in the pocket 110 as the door is
swung closed after the outside push button has been depressed, a
small abutment of dimple 120 (FIGS. 20 to 24) is formed on the
inside of the base plate 32' to guard against uncontrolled right to
left movement of the pin from the positions shown in FIGS. 15 and
20 during closing of the door. The dimple is located to the left
side of one end 87a' of the pin (see FIG. 21) when the latter is
positioned directly above the pocket as shown in FIGS. 15 and 20
and will engage the end 87a' if the pin should begin to move toward
the left within the elongated slot 97' before lodging in the pocket
110. Accordingly, the dimple insures that the pin will lodge in the
pocket to cause the locking lever 90' to return to the locked
position, and eliminates the danger of the pin missing the pocket
and leaving the door in an unlocked condition. Once the pin lodges
in the pocket and moves downwardly with the contactor 75' to its
uncoupling position shown in FIG. 17, the pin clears the lower edge
of the dimple 120 and is free to shift to the extreme left end of
the slot 97' to its coupling position (FIG. 22) when the locking
lever is manually returned to its unlocked position by the key or
the garnish button. In the coupling position, the pin is located to
the left of the dimple as shown in FIG. 22 and is free to move
upwardly within the curved slot 98' when the contactor is actuated.
Thus, the dimple is sized and located to restrict possible movement
of the pin only as the door is closed with the locking lever in its
locked position and with the contactor held in its operated
position by depression of the outside push button.
It will be apparent from the foregoing that the latch 20 of the
first embodiment which, as specifically shown herein always remains
locked as the door is closed with the locking lever 90 in its
locked position, may be made self-cancelling by adding a kick-out
lug 106 to the latching element 23. In addition, simply by forming
a pocket 110 in the slot 98 and a dimple 120 on the base plate 32
of the latch 20, the latter may be modified to require two preset
operations to effect keyless locking. That is, with the addition of
the kick-out lug, the pocket and the dimple, the latch 20 will
remain locked as the door is closed only if the locking lever is
first shifted to its locked position by depression of the garnish
button and if the outside push button is held in a depressed
condition during closing of the door.
The kick-out lug 106 is used to advantage to prevent locking of the
latch 20' (or the latch 20 if the latter is provided with a
kick-out lug) if the door is closed only sufficiently far to move
the latching element 23' to its secondary latched position in which
the pawl 69' engages the tooth 66' of the ratchet 65'. As shown in
FIG. 18, the kick-out lug 106 underlies the arm 92' of the locking
lever 90' when the latching element is in its secondary latched
position. Thus, if an attempt is made to swing the locking lever
counterclockwise about the stud 94' to its locked position by
depressing the garnish button, the kick-out lug 106 will engage the
edge 105 of the arm 92' and will prevent turning of the locking
lever to the locked position. Accordingly, the door cannot be
locked by the garnish button and the occupant of the vehicle will
be warned that the door is ajar and not fully closed and
latched.
Unlike the latch 20 of the first embodiment, the latch 20' is
capable of being unlocked from the inside of the vehicle when the
inside remote handle is operated to unlatch the door. As shown in
FIG. 19, the inside operating lever 83' is pivoted on the innermost
side of the flange 35' at 115 and is formed with a lug 116 in
addition to the lug 84'. The lug 116 underlies the arm 93' of the
locking lever 90' and engages the arm to turn the locking lever to
the unlocked position upon initial counterclockwise (FIG 19)
swinging of the lever 83' by the inside handle. With continued
swinging of the lever 83', the lug 84' engages and actuates the
pawl 69' to unlatch the door. Thus, the latch 20' may be both
unlocked and unlatched by operating the inside door handle and
without need of manually pulling up the garnish button. It is
evident that the latch 20 of the first embodiment may be modified
to operate in this manner and, conversely, the latch 20' may be
designed so as to be incapable of being unlocked when the inside
handle is operated.
Another embodiment of a free-wheeling, dual preset latch 130 is
shown in FIGS. 24 to 30 and is advantageously constructed so that,
as the door is closed after the latch has been properly preset for
keyless locking, the locking lever 131 remains in its locked
position and does not turn first toward its unlocked position and
then back to its locked position during closing of the door. As a
result, the garnish button remains in a depressed position and does
not shift first upwardly and then back downwardly as the door is
closed.
In this instance, the locking lever 131 is fulcrumed on a shaft 133
to turn between its locked and unlocked positions and is retained
yieldably in each of its positions by a toggle spring 134. A pawl
135 also is mounted to turn on the shaft and is engageable with
ratchet teeth 136 and 137 spaced around the edge of a latching
element 139. A torsion spring 140 wrapped around the shaft urges
the pawl into engagement with the ratchet teeth while a torsion
spring 141 urges the latching element to turn toward an unlatched
position about a pin 143 which rotatable mounts the latching
element. The latch also includes an actuator or contactor 145 which
is mounted on a stud 146 to turn between normal and operated
positions and which is urged toward its normal position by a
torsion spring 147 wrapped around the stud. The locking lever 131,
the pawl 135 and the contactor 145 are located generally in
side-by-side relation with the contactor being sandwiched between
the locking lever and the pawl.
As shown most clearly in FIGS. 28 to 30, the locking lever 131, the
pawl 135 and the contactor 145 are formed with slots 149, 150 and
151, respectively. A connector pin 153 projects through all three
slots and is retained therein by a washer 154 (FIG. 26) positioned
on the end of the pin alongside the locking lever and by a washer
155 positioned between the pawl and the contactor.
The slot 149 (FIG. 30) in the locking lever 131 extends generally
vertically, is substantially arcuate and curves generally about the
axis of the stud 146 which mounts the contactor 145. The slot 150
(FIG. 28) in the pawl 135 is comparatively large and includes a
diagonally extending edge 156 at its right side. Formed in the
opposite or left edge of the slot 150 is a pair of upper and lower
pockets 157 and 159. The slot 151 (FIG. 29) in the contactor 145 is
curved generally about the axis of the shaft 133 and includes left
and right upper pockets 160 and 161.
When the latch 130 is in a latched and unlocked condition with the
locking lever 131 disposed in its unlocked position as shown in
FIG. 24, the pin 153 is disposed (1) in the upper end of the slot
149, (2) in the upper right corner of the slot 150 adjacent the
diagonal edge 156 thereof, and (3) adjacent the right upper pocket
161 of the slot 151. Thus, when the contactor 145 is swung
clockwise about the stud 146 to release the latch, the upper edge
of the pocket 161 engages the pin and forces the latter downwardly
against the diagonal edge 156. Accordingly, the pawl 135 is swung
clockwise out of engagement with the ratchet tooth 137 and frees
the latching element 139 to turn to its unlatched position. The pin
simply slides downwardly within the slot 149 and does not disturb
the position of the locking lever 131 as the latching element is
released.
If the locking lever 131 is turned counterclockwise from its
unlocked position shown in FIG. 24 to its locked position, the
right edge of the slot 149 engages the pin 153 and shifts the pin
from right to left within the slots 150 and 151 to the position
shown in FIG. 25. In this position, the pin is disposed (1) in the
upper end of the slot 149, (2) adjacent the upper pocket 157 of the
slot 150 and (3) adjacent the left upper pocket 160 of the slot
151. Accordingly, if an attempt is made to release the latching
element 139 by swinging the contactor 145 clockwise, the upper edge
of the pocket 160 engages and forces the pin 153 downwardly, but
the pin simply shifts downwardly in the comparatively large slot
150 with an idle motion and without engaging the edges of such
slot. Thus, the pin and the contactor free-wheel with respect to
the pawl 135 to leave the latter in engagement with the ratchet
tooth 137 and to prevent unlatching of the latch. As before, the
pin simply slides idly in the slot 149 in the locking lever 131 and
does not change the position of the locking lever during
free-wheeling. When the locking lever is turned clockwise by the
garnish button or key, the left edge of the slot 149 engages the
pin and returns the latter to the position shown in FIG. 24.
If the locking lever 131 is accidentally turned to its locked
position by depression of the garnish button when the door is open,
the pin 153 is shifted to the position shown in FIG. 25, this
position being the same as that occupied by the pin when the door
is closed and the latch locked. Upon closing of the door, the
latching element 139 turns counterclockwise from the position shown
in FIG. 25 and the ratchet teeth 136 and 137 sweep past the free
end of the pawl 135 to rock the pawl clockwise about the shaft 133.
As the pawl is thus rocked, the left edge of the upper pocket 157
engages the pin 153 and moves the pin from left to right. The pin
thus engages the right edge of the slot 149 to cause the locking
lever 131 to turn clockwise to its unlocked position shown in FIG.
24. Accordingly, the latch will cancel or unlock automatically if
the door is shut with the locking lever having been accidentally
set in the locked position prior to closing the door.
Keyless locking of the door may be effected by first turning the
locking lever 131 to its locked position with the garnish button
and then by holding the contactor 145 in its actuated position with
the outside push button as the door is closed. As shown in FIG. 27,
clockwise turning of the contactor 145 to its actuated position
causes the upper edge of the left pocket 160 in the slot 151 to
engage and shift the pin 153 downwardly out of the upper pocket 157
in the slot 150 and into the lower portion of the slot 150 to a
position approximately midway between the left and right ends
thereof and spaced to the right of the lower pocket 159. Thus, when
the door is closed and the pawl 135 rocked clockwise by the ratchet
teeth 136 and 137, the lower left pocket 159 will not engage the
pin and therefore the locking lever 131 will remain in its locked
position to effect locking of the door as an incident to closing of
the door. It thus will be apparent that the locking lever remains
in its locked position during keyless locking and does not turn
from its locked position toward its unlocked position and back as
in the case of the latch 20'.
* * * * *