U.S. patent number 3,681,556 [Application Number 05/192,192] was granted by the patent office on 1972-08-01 for snap-on rocker cap for electric switch.
This patent grant is currently assigned to McGill Manufacturing Company, Inc.. Invention is credited to Thomas F. Osika.
United States Patent |
3,681,556 |
Osika |
August 1, 1972 |
SNAP-ON ROCKER CAP FOR ELECTRIC SWITCH
Abstract
A snap-on rocker cap for an electric switch includes first and
second flexible tabs which extend from the rocker each of which
have foot portions extending toward and spaced adjacent to each
other. The switch carrier member which operates to open and close
the switch contacts is rotatably mounted to the switch housing by
an axle member. The cap is mounted to the carrier member by
snapping the resilient mounting tabs about the axle with first and
second alignment legs on the cap fitting into corresponding slots
in the carrier member for positioning the rocker cap.
Inventors: |
Osika; Thomas F. (Gary,
IN) |
Assignee: |
McGill Manufacturing Company,
Inc. (Valparaiso, IN)
|
Family
ID: |
22708628 |
Appl.
No.: |
05/192,192 |
Filed: |
October 26, 1971 |
Current U.S.
Class: |
200/338; 200/333;
200/295; 200/339 |
Current CPC
Class: |
H01H
23/145 (20130101) |
Current International
Class: |
H01H
23/00 (20060101); H01H 23/14 (20060101); H01h
003/04 () |
Field of
Search: |
;200/167A,167R,172R,172A,168C,153T |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Jones; H. O.
Claims
1. A snap-on operator for a switch assembly having an operator
carrier member for opening and closing the switch contacts, which
carrier member is pivotally mounted by an axle member to the switch
assembly, said snap-on operator including in combination, flexible
tab connecting means extending therefrom, and alignment means
integral therewith, said snap-on operator being connected to the
carrier member by snapping said flexible tab connecting means about
the axle member pivotally connecting the carrier member to the
switch assembly, and said alignment means of said snap-on operator
engaging the carrier member to position said snap-on operator
therein whereby movement of said snap-on operator pivots the
2. The snap-on switch operator of claim 1 wherein said flexible tab
connecting means includes first and second flexible legs extending
downwardly from said snap-on operator in a spaced relation to one
another, each said leg having a foot portion extending therefrom,
said foot portions extending toward and being substantially
adjacent to one another, said foot portions each including a cam
surface which cooperate with one another to form an axle engaging
surface, with said snap-on operator being connected to the carrier
member said cam surfaces engage the axle member and act to move
said legs apart in a scissor-like action, and said legs spring back
to substantially their original positions with the same moving past
the axle member thereby connecting said snap-on operator to the
3. The snap-on switch operator of claim 2 wherein said flexible
legs are spaced from one another an amount less than the diameter
of the axle member and with said flexible legs springing back
toward their original
4. The snap-on switch operator of claim 1 wherein said alignment
means includes first and second alignment legs extending from said
snap-on operator, and said carrier member includes means for
receiving said alignment legs to position said snap-on operator in
said carrier member.
5. The snap-on switch operator of claim 4 wherein said means for
receiving said alignment legs includes first and second slots in
said carrier member, said slots having a cross-section shaped to
receive said first and
6. The snap-on switch operator of claim 5 wherein said flexible tab
connecting means includes first and second legs each having foot
portions, and said first and second slots have a predetermined
depth for positioning said snap-on operator relative to said
carrier member whereby said foot portions of each leg fit snuggly
beneath said axle member with said flexible tab connecting means
being snapped around said axle member to limit the upward movement
of said first and second alignment legs in said slots thereby
insuring said snap-on operator fits tightly to said carrier
7. A switch assembly including in combination, a switch housing
enclosing contact means and a bridge member, a carrier member for
operating said bridge member for selectively opening and closing
said contact means, an axle supported by said switch housing, said
carrier member being rotatably mounted to said axle, a snap-on
switch operator including resilient tab connecting means comprising
first and second legs each having a foot portion, said legs being
positioned in a spaced relation to one another with each foot
portion extending toward and being adjacent to the other, said tab
connecting means further including first and second spaced apart
alignment legs, and said carrier member includes first and second
slots shaped to receive said alignment legs, whereby said snap-on
switch operator is mounted to said carrier member with said legs of
said tab connecting means snapping about said axle member and said
first and second alignment legs fitting into said first and second
slots in said carrier member, and each said foot portion of said
tab connecting means fitting snuggly beneath said axle member so
said snap-on switch operator is held tightly to said carrier
member.
Description
BACKGROUND OF THE INVENTION
Generally for customers who place large orders electric switch
manufactures are able to provide rocker action switches wherein the
rocker cap is of the color and shape specified by the customer. On
the other hand, customer who buy switches in small quantities
generally do not have the option of specifying the rocker cap color
and shape and their choice is usually limited by what the
manufacture has in inventory.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a simple and
inexpensive snap-on rocker cap for an electric switch.
It is a further object of this invention to provide snap-on rocker
caps which permit switch manufacturers to supply customers placing
small orders with the color and shape of rocker cap they
desire.
In one embodiment of this invention a switch assembly includes a
carrier member for opening and closing the switch contacts which is
pivotally mounted by an axle to the switch housing. A snap-on
rocker cap or operator is included for the switch comprising
flexible tab-like legs which extend downwardly from the cap in a
spaced relation to one another. Each leg has a foot portion which
extends therefrom toward to the other foot portion and
substantially adjacent thereto. The foot portions each include a
lead in cam surface which cooperate with one another to form an
axle engaging surface. In addition, first and second spaced apart
alignment legs also extend downwardly from the cap and fit into
first and second alignment slots in the carrier member. The cap is
mounted to the carrier member by snapping the resilient tabs about
the axle with the alignment legs moving into the slots in the
carrier member.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevation view in cross-section illustrating the
electrical switch assembly in accordance with this invention;
FIGS. 2 and 3 are side elevation views partially in cross-section
of the switch of FIG. 1 illustrating operating of the snap-on cap
in accordance with this invention;
FIG. 4 is a cross-section view taken along the line 4--4 of FIG. 3;
and
FIG. 5 is a top plan view of the switch carrier member.
DETAILED DESCRIPTION
Referring to the drawing, FIG. 1 shows an electrical switch
assembly 10 which includes a switch housing 12 enclosing contacts
14 and 15 which are connected to terminals 16 and 17 respectively.
A bridge member 19 provides the means for making and breaking the
contacts.
As shown in FIG. 5, trunions 22 and 23 are mounted to the switch
housing 12 and support a rivet 25 which acts as an axle member. A
carrier member 27 (FIG. 1) is rotatably mounted about the axle 25
and contains a spring loaded actuator 29 which moves along the
bridge 19 to operate the same for opening and closing the switch
contacts.
A rocker cap or switch operator 30 has first and second resilient
tab portions 32 and 33 integrally molded therewith and extending
downwardly therefrom. Each of the resilient tabs include first and
second foot portions 36 and 37 (FIG. 2) which extend toward and are
substantially adjacent to one another. Each of these foot portions
includes lead-in cam angle surfaces 40 and 41 (FIG. 3) which
cooperate with one another to form an axle engaging surface.
Likewise, integrally molded to the rocker cap 30 in a spaced
relation to one another and extending downwardly therefrom are
alignment legs 43 and 45. These alignment legs also include angled
cam surfaces 46 and 47 respectively to facilitate sliding the
alignment legs into first and second slots 50 and 51 (FIG. 5) in
the rocker member 27. The slots 50 and 51 have a cross-section
shaped generally for receiving the alignment legs.
In operation the rocker cap 30 is mounted to the carrier member 27
by fitting the alignment legs 43 and 45 into the slots 50 and 51 in
the carrier member 27 and pushing downwardly until the cam surfaces
40 and 41 of the foot portions 36 and 37 of the resilient tabs
engage the axle member 25 as shown in FIG. 1. Continued downward
force then moves the resilient tabs apart as shown in FIG. 2. After
the foot portion of each tab passes the axle member, the resilient
tab legs snap back to substantially their original position. As
shown in FIG. 3, the diameter of the axle 25 is slightly greater
than the space between the resilient leg portions of the tab
members so that the legs grip the axle. Furthermore, the depth of
the alignment slots 50 and 51 is selected to space the rocker cap
30 relative to the carrier member 27 so each of the foot portions
36 and 37 fit snugly beneath the axle member 25. In this position
the walls of the slots 50 and 51 prevent fore, aft and down
movement of the rocker cap 30 in the carrier member 27 while the
foot portion of each resilient tab connector substantially
eliminates any upward movement of the rocker cap relative to the
carrier member so the same is tightly held in position.
Although the snap-on rocker cap of this invention has been shown
for illustrative purposes as one design it should be understood
that other designs could be employed for the shape of the rocker
cap while retaining the "snap-on" capability.
It can be seen, therefore, that by utilizing this invention rocker
caps of many colors can be manufactured and maintained in inventory
and subsequently readily snap mounted to a standard stock
electrical switch to provide customers with a choice of colors and
even shapes of rocker caps.
* * * * *