U.S. patent application number 15/788502 was filed with the patent office on 2018-05-10 for latch device.
The applicant listed for this patent is Brogent Technologies Inc.. Invention is credited to Ke-Cheng Chien, Shih-Kuang Chiu, Chih-Chiang Huang, Guo-Sen Lian, Wei-Ching Tang.
Application Number | 20180125172 15/788502 |
Document ID | / |
Family ID | 58775405 |
Filed Date | 2018-05-10 |
United States Patent
Application |
20180125172 |
Kind Code |
A1 |
Chien; Ke-Cheng ; et
al. |
May 10, 2018 |
Latch Device
Abstract
A latch device comprises a housing unit, a disk unit, an
electromagnetic lock unit, a pressing lock unit, and a detecting
unit. The housing unit includes a housing, which has a pressing
hole and an insertion slot. The disk unit includes a supporting rod
positioned through the housing, and two vertical disks pivotally
arranged to the supporting rod. The outer perimeter of the two
disks is placed with a hook, a first engaging portion and a second
engaging portion. The electromagnetic lock unit includes two
electromagnetic mechanisms, two retractable bars connected to the
two electromagnetic mechanisms, and two electromagnetic latches
respectively connected to the two retractable bars. The pressing
lock unit includes a pushbutton, and a button latch connected to
the pushbutton. The detecting unit includes two detectors, which
are disposed inside the housing for detecting the position of the
two electromagnetic latches.
Inventors: |
Chien; Ke-Cheng; (Kaohsiung
City, TW) ; Tang; Wei-Ching; (Kaohsiung City, TW)
; Huang; Chih-Chiang; (Kaohsiung City, TW) ; Lian;
Guo-Sen; (Kaohsiung City, TW) ; Chiu; Shih-Kuang;
(Kaohsiung City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Brogent Technologies Inc. |
Kaohsiung City |
|
TW |
|
|
Family ID: |
58775405 |
Appl. No.: |
15/788502 |
Filed: |
October 19, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A44D 2203/00 20130101;
A44B 11/2573 20130101; A44B 11/2569 20130101; A44B 11/2523
20130101; A44B 11/2565 20130101; A44B 11/2542 20130101; A44B
11/2503 20130101 |
International
Class: |
A44B 11/25 20060101
A44B011/25 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 10, 2016 |
TW |
105217198 |
Claims
1. A latch device, applied to selectively secure a latch plate
device, wherein comprises a latch plate with two latching holes,
comprising: a housing unit, including a housing, which has a
pressing hole and an insertion slot; a disk unit, including a
supporting rod positioned through the housing, and two vertical
disks pivotally arranged to the supporting rod, around an outer
perimeter of the two vertical disks being placed with a hook, a
first engaging portion and a second engaging portion; an
electromagnetic lock unit, including two electromagnetic mechanisms
fixed arranged inside the housing, two retractable bars
respectively connected to the two electromagnetic mechanisms, and
two electromagnetic latches respectively connected to the two
retractable bars; a pressing lock unit, including a press button
slidingly connected to the press hole, and a button latch connected
to the press button; a detecting unit, including two detectors,
which are disposed inside the housing for detecting the position of
the two electromagnetic latches; wherein the two vertical disks can
be moved between an unlatched position and a latched position, and
when the two vertical disks are on the unlatched position, the
latch plate can be inserted from the insertion slot and push the
two vertical disks to the latched position; when the two vertical
disks are on the latched position, the two electromagnetic latches
are respectively latched with the two first engaging portions, and
the button latch is concurrently latched with the two second
engaging portions, so that the two vertical disks cannot either
move or interfere respectively with the two latching holes, and the
latch plate device can be secured to the latch device.
2. The latch device as claimed in claim 1, further includes an
illuminating unit, wherein an illuminator is disposed inside the
housing.
3. The latch device as claimed in claim 2, wherein the disk unit
further includes two disk springs for respectively moving the two
vertical disks to the unlatched position, and one end of the disk
springs are respectively connected to the two vertical disks, and
the other ends are connected to the housing.
4. The latch device as claimed in claim 3, wherein the
electromagnetic lock unit further includes two electromagnetic lock
springs, which respectively enables the two electromagnetic latches
to push against the two first engaging portions, and one end of the
two electromagnetic lock springs are respectively connected to the
two electromagnetic latches, while the other ends are connected to
the housing.
5. The latch device as claimed in claim 4, wherein the pressing
lock unit further includes two pressing lock springs, which enables
the button latch to be pushed against the two second engaging
portions, and one end of the two pressing lock springs are
connected to the press button, while the other ends are connected
to the housing.
6. The latch device as claimed in claim 5, further includes a
forcible release unit, wherein a release hole is opened on the
press button, and a release for inserting into the release hole to
push the two electromagnetic latches and the button latch.
7. The latch device as claimed in claim 6, wherein the housing unit
further includes a fixing flange protruding from the bottom of the
housing.
8. The latch device as claimed in claim 7, wherein the insertion
slot is provided with a wall for framing a guide passage.
9. The latch device as claimed in claim 8, wherein the
electromagnetic lock unit further includes an electromagnetic lock
guide rod disposed inside the housing, and two electromagnetic
channels respectively disposed inside the two electromagnetic
latches and positioned through by the electromagnetic lock guide
rod.
10. The latch device as claimed in claim 9, wherein the pressing
lock unit further includes two pressing lock guide rods disposed
inside the housing, and two pressing lock channels disposed on the
press button and positioned through by the two pressing lock guide
rods.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to safety device technology
such as for instance a latch device for seat belt.
BACKGROUND
[0002] Exciting recreational facilities are installed in amusement
parks for providing customers a better, joyful and refresh
experience. Moreover, with advanced development of virtual reality,
every amusement park is equipped with haptic simulation theater, in
which seat belts central control system is essential for securing
customer safety.
[0003] Please refer to FIG. 1, which concerns Taiwan Patent No.
M473859, a latch 200 for seat belt 100. The seat belt 100 is
connected to a latch plate with two latching holes, and the latch
200 has an insertion slot for inserting the latch plate. Two
vertical locking disks, and an electromagnetic lock and a pressing
lock for engaging with the two vertical locking disks are attached
inside the latch 200, so that the latch plate of seat belt 100 is
secured inside the latch 200.
[0004] In addition, the latch 200 only can be unlatched by means of
releasing both the electromagnetic lock and the manual pressing
lock, and central control console only can detect whether the
electromagnetic lock is powered up, but cannot confirm latched
state of the vertical locking disks, so it needs staff to confirm
latched state of seat belt 100 one by one.
[0005] Furthermore, dark ambient condition is essential for a
haptic simulation theater, which can let customers enjoy realistic
experiences, but it is hard for customers to find and latch the
latch 200 with the seat belt 100 in a dark theater.
[0006] From the above descriptions, certain problems still exist
with current latch for seat belt:
[0007] 1. Unable to Confirm a Latched State Via Central Control
Console
[0008] Central control console only can detect whether the
electromagnetic lock is powered up, but cannot confirm latched
state of the vertical locking disks, so it needs staff to confirm
latched state of seat belt 100, which is possible to increase risk
of accidents.
[0009] 2. Unable to Find a Latch in the Dark
[0010] Dark ambient condition is essential for a haptic simulation
theater, which can let customers enjoy realistic experiences, but
it is hard for customers to find a latch on a seat in such dark
room.
[0011] 3. Unable to Comply With Strict Safety Regulations
[0012] Regulations and standards of recreational facilities vary
from country to country, if latched state of the two vertical
locking disks cannot be monitored, it may not comply with safety
regulations and standards in some countries.
[0013] 4. Possible to Increase Risk of Accidents
[0014] It is hard to detect rotatory position of each lock
cylinders in a conventional latch. When one of lock cylinders has a
breakdown and cannot be detected from its appearance, and central
control console is also unable to receive breakdown information,
the other good lock cylinder will still be secured to the latch
plate, which enables the damaged latch still be utilized. Under
these circumstances, once the good lock cylinder has a breakdown,
accident will happen.
SUMMARY
[0015] Therefore, one objective of an embodiment of the present
invention is to provide a latch device selectively secured to a
latch plate device. The latch plate device comprises a latch plate
with two latching holes, while the latch device comprises a housing
unit, a disk unit, an electromagnetic lock unit, a pressing lock
unit, and a detecting unit.
[0016] The housing unit includes a housing, which has a pressing
hole and an insertion slot.
[0017] The disk unit includes a supporting rod positioned through
the housing, and two vertical disks pivotally arranged to the
supporting rod. A hook, a first engaging portion and a second
engaging portion are disposed round an outer perimeter of the two
disks.
[0018] The electromagnetic lock unit includes two electromagnetic
mechanisms fixed inside the housing, two retractable bars
respectively connected to the two electromagnetic mechanisms, and
two electromagnetic latches respectively connected to the two
retractable bars.
[0019] The pressing lock unit includes a press button slidingly
connected to the pressing hole, and a button latch connected to the
press button.
[0020] The detecting unit includes two detectors for respectively
detecting position of the two electromagnetic latches.
[0021] The two vertical disks can move between an unlatched
position and a latched position. When the two vertical disks are on
the unlatched position, the latch plate can be inserted from the
insertion slot and the two vertical disks can be pushed to the
latched position. When the two vertical disks are on the latched
position, the two electromagnetic latches are respectively latched
with the two first engaging portions, and concurrently the button
latch is latched with the two second engaging portions, so that the
two vertical disks cannot either move or interfere with the
latching holes, and the latch plate device can be secured to the
latch device.
[0022] Another technique of an embodiment of the present invention
includes an illuminating unit, wherein an illuminator is disposed
inside the housing.
[0023] Another technique of an embodiment of the present invention
is that the disk unit further includes two disk springs for
respectively moving the two vertical disks to the unlatched
position, and one end of the disk springs are respectively
connected to the two vertical disks, and the other ends are
connected to the housing.
[0024] Another technique of an embodiment of the present invention
is that the electromagnetic lock unit further includes two
electromagnetic lock springs, which respectively enables the two
electromagnetic latches to push against the two first engaging
portions, and one end of the two electromagnetic lock springs are
respectively connected to the two electromagnetic latches, while
the other ends are connected to the housing.
[0025] Another technique of an embodiment of the present invention
is that the pressing lock unit further includes two pressing lock
springs, which enables the button latch to be push against the two
second engaging portions, and one end of the two pressing lock
springs are connected to the press button, while the other ends are
connected to the housing.
[0026] Another technique of an embodiment of the present invention
includes a forcible release unit, wherein a release hole is opened
on the press button, and a release for inserting into the release
hole to push the two electromagnetic latches and the button
latch.
[0027] Another technique of an embodiment of the present invention
is that the housing unit further includes a fixing flange
protruding from bottom of the housing.
[0028] Another technique of an embodiment of the present invention
is that the insertion slot is provided with a wall for framing a
guide passage.
[0029] Another technique of an embodiment of the present invention
is that the electromagnetic lock unit further includes an
electromagnetic lock guide rod disposed inside the housing, and two
electromagnetic channels respectively disposed inside the two
electromagnetic latches and positioned through by the
electromagnetic lock guide rod.
[0030] Another technique of an embodiment of the present invention
is that the pressing lock unit further includes two pressing lock
guide rods disposed inside the housing, and two pressing lock
channels disposed on the press button and positioned through by the
two pressing lock guide rods.
[0031] An advantage of an embodiment of the invention is that by
combination of the housing unit, the disk unit, the electromagnetic
lock unit, and the pressing lock unit, when the latch plate is
inserted into the insertion slot, the two electromagnetic latches
can be securely latched with the two first engaging portions, and
interfere with the two vertical disks, so that the latch plate
device can be fixed inside the latch device. Furthermore, the two
detectors can respectively detect position of the electromagnetic
latches for confirming whether the two vertical disks are on the
latched position, and whether the two electromagnetic latches are
latched with the two first engaging portions, so that the central
control console of the electromagnetic mechanism can confirm the
latched state of the latch device.
[0032] To enable a further understanding of said objectives and the
technological methods, a brief description of the drawings is
provided below followed by a detailed description of the
embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0033] FIG. 1 is an exploded perspective view of Taiwan Patent No.
M473859, a latch for seat belt;
[0034] FIG. 2 is an exploded perspective view of a first embodiment
according to the present invention;
[0035] FIG. 3 is a partially exploded perspective view depicting
detailed arrangement of the first embodiment;
[0036] FIG. 4 is a cross-sectional side view depicting a latched
state of the first embodiment;
[0037] FIG. 5 is an operational side view in partial section
depicting an electromagnetic lock unit of the first embodiment;
[0038] FIG. 6 is a cross-sectional side view depicting an unlatched
state of the first embodiment;
[0039] FIG. 7 is a side view depicting the latch device secured to
a latch device is detected by a detector;
[0040] FIG. 8 is a side view depicting the latch device not secured
to a latch device is detected by a detector.
DETAILED DESCRIPTION
[0041] Specific structural and functional details disclosed herein
will become apparent from the following description taken in
conjunction with the accompanying drawings.
[0042] With reference to FIGS. 2 and 3, an embodiment is depicted,
which applies to a latch device selectively secured to a latch
plate device 2. The latch plate device 2 comprises a latch plate 21
with two latching holes 22, while the latch device comprises a
housing unit 3, a disk unit 4, an electromagnetic lock unit 5, a
pressing lock unit 6, a detecting unit 7, an illuminating unit 8,
and a forcible release unit 9.
[0043] The housing unit 3 includes a housing 31, which has a
pressing hole 32 and an insertion slot 33, and a fixing flange 34
protruding from bottom of the housing 31. The housing 31 is
provided with a frame 311, and a cover 312 mounted on the frame
311. The insertion slot 33 is provided with a wall 332 for framing
a guide passage 331. The wall 332 is presented as a Y-shaped radian
in an opening of the guide passage 331, and width inside the guide
passage 331 can match with width of the latch plate 21, so that the
latch plate 21 can be fit into the insertion slot 33.
[0044] A lock hole opened on the fixing flange 34 for fixing the
latch device on one side of a seat (not shown in the drawings), and
a seat belt is disposed on the other side of the seat to connect to
the latch plate device 2, so that an occupant can be securely held
in a seat, which can prevent accident when haptic feedback seats
are out of work.
[0045] The disk unit 4 includes a supporting rod 41 positioned
through the housing 31, two vertical disks 42 pivotally arranged on
the supporting rod 41, and two disk springs 43. The two vertical
disks 42 can rotate around the supporting rod 41 within a limited
angle. A hook 421, a first engaging portion 422, a second engaging
portion 423, and a limiting portion 424 are disposed around an
outer perimeter of the two disks. One end of the two disk springs
43 are respectively connected to the two vertical disks 42, and the
other ends are connected to two side walls inside the housing
31.
[0046] With reference to FIGS. 4, 5 and 6, the two vertical disks
42 can move between an unlatched and a latched position. The two
disk springs 43 will respectively pull the two vertical disks 42
for rotating around the supporting rod 41 at an angle until inner
wall of the housing 31 reaches the limiting portion 424. A
horizontal rod is disposed on the inner wall of the housing 31 for
blocking the limiting portion 424, so that the two vertical disks
42 are forced to be on the unlatched position. When the two
vertical disks 42 are on the unlatched position, the latch plate 21
can be inserted from the insertion slot 33 and push the two
vertical disks 42 against tension of the two disk springs 43, so
that the two vertical disks 42 are reversely moved to the latched
position.
[0047] The electromagnetic lock unit 5 includes two electromagnetic
mechanisms 51 fixedly disposed on the rear end of the housing 31,
two retractable bars 52 respectively attracted and controlled by
the two electromagnetic mechanisms 51, two electromagnetic latches
53 respectively connected to the two retractable bars 52, two
electromagnetic lock springs 54, an electromagnetic lock guide rod
55 disposed inside the housing 31, and two electromagnetic channels
56 respectively disposed on the two electromagnetic latches 53 and
positioned through by the electromagnetic lock guide rod 55. The
one end of the two electromagnetic lock springs 54 are respectively
connected to the two electromagnetic latches 53, and the other ends
are connected to the inside of the housing 31.
[0048] When the latch plate 21 is inserted into the insertion slot
33, the two hooks 421 will be pushed for moving the two vertical
disks 42 to the latched position. The two electromagnetic lock
springs 54 respectively enable the two electromagnetic latches 53
to pull against the two first engaging portions 422, so that the
two electromagnetic latches 53 can respectively interfere with the
two vertical disks 42. As a result, the two vertical disks 42
cannot move, which causes the two latch holes 22 of the latch plate
21 to be fixed.
[0049] The two electromagnetic mechanisms 51 are electromagnetic
elements, when being powered on, magnetic attraction will be
produced for pulling the two retractable bars 52, so that the two
electromagnetic latches 53 can be separated from the two first
engaging portions 422. Meanwhile, the press button 61 is pressed to
separate the button latch 62 from the two first engaging portions
423, and the elasticity of the two disk springs 43 can enable the
two vertical disks 42 to move to the unlatched position, so that
the latch plate 2 can be ejected.
[0050] When the two electromagnetic mechanisms 51 are not powered
on, the two electromagnetic latches 53 are respectively moved
toward the two vertical disks 42 by the two electromagnetic springs
54, and respectively reach the outer perimeter of the two vertical
disks 42 waiting for insertion of the latch plate device 2. When
the latch plate 21 of the latch plate device 2 is inserted into the
insertion slot 33, the latch plate 21 concurrently pushes the hooks
421 of the two vertical disks 42, so that the two vertical disks 42
can move to the latched position, and the two electromagnetic
latches 53 can be respectively moved to the two first engaging
portions 422 by the two electromagnetic springs 54.
[0051] The electromagnetic lock guide rod 55 is positioned through
the electromagnetic channels 56 for controlling the movement of the
two electromagnetic latches 53, so when the two electromagnetic
lock springs 54 pull the two electromagnetic latches 53, the two
electromagnetic latches 53 can precisely engage with the two first
engaging portions 422, and the electromagnetic lock guide rod 55
further provides force to the two electromagnetic latches 53 to
interfere with the two vertical disks 42, so that the two vertical
disks 42 are unable to rotate.
[0052] The pressing lock unit 6 includes a press button 61
slidingly connected to the press hole 32, a button latch 62
connected to the press button 61, two pressing lock springs 63, two
pressing lock guide rods 64 disposed inside the housing 31, and two
pressing lock channels 65 disposed on the press button 61 and
positioned through by the pressing lock guide rods 64. One end of
the two pressing lock springs 63 are respectively connected to two
side faces of the press button 61, and the other ends are connected
to the inside of the housing 31.
[0053] When the latch plate 21 is inserted into the insertion slot
33, and concurrently pushes the two hooks 421 for moving the two
vertical disks 42 to the latched position, elasticity of the two
pressing lock springs 63 pulls the press button 61, so that the
button latch 62 concurrently interfere with the two second engaging
portions 423. As a result, the button latch 62 can respectively
interfere with the two vertical disks 42, and the two vertical
disks 42 cannot move, so that the two latch holes 22 of the latch
plate 21 can be secured.
[0054] The press button 61 is exposed outside from the pressing
hole 32 for a hand press. When the press button 61 is pressed
against elasticity of the two pressing lock springs 63, the button
latch 62 is separated from the two second engaging portions 423.
When the two electromagnetic latches 53 are separated from the two
first engaging portions 422 by the two electromagnetic mechanisms
51, elasticity of the two disk springs 43 can move the two vertical
disks 42 to the unlatched position, and the latch plate device 2 is
ejected.
[0055] When the press button 61 is released by hand, the two button
latches 62 move toward the two vertical disks 42 via the two
pressing lock springs 63, and respectively reach the outer
perimeter of the two vertical disks 42 waiting for insertion of the
latch plate device 2. When the latch plate 21 is inserted into the
insertion slot 33, the latch plate 21 concurrently pushes the hooks
421 of the two vertical disks 42, so that the two vertical disks 42
can move to the latched position, and elasticity of the two
pressing lock springs 63 enable the button latch 62 to push against
the two first engaging portions 422.
[0056] The two pressing lock channels 65 are respectively
positioned through by the two pressing lock guide rods 64, and the
two pressing lock guide rods 64 are parallel to the two pressing
lock channels 65 for controlling the movement of the button latches
62, so when the two pressing lock springs 63 pull the press button
61, the button latch 62 can precisely engage with the two second
engaging portions 423, and the two pressing lock guide rods 64
further provides force to the button latch 62 to interfere with the
two vertical disks 42, so that the two vertical disks 42 are unable
to move.
[0057] When the two vertical disks 42 are on the latched position,
the two electromagnetic latches 53 are respectively latched with
the two first engaging portions 422, and the button latch 62 is
concurrently latched with the two second engaging portions 423, so
that the two vertical disks 42 are unable to move due to dual
locking from the electromagnetic lock unit 5 and the pressing lock
unit 6, and interfere with the two latching holes 22. As a result,
the latch plate device 2 is latched with the latch device by the
two latch holes 22.
[0058] With reference to FIGS. 7 and 8, the detecting unit 7
includes two detectors 71 disposed inside the housing 31 for
detecting position of the two electromagnetic latches 53. In one
embodiment, an infrared sensor is served as a detector 71, wherein
an infrared emitter and an infrared receiver are provided, and two
light barrier members 72 are respectively disposed on the two
electromagnetic latches 53. When the two vertical disks 42 are on
the latched position, the two electromagnetic latches 53 move
toward the two vertical disks 42 by the pushing force of the two
electromagnetic lock springs 54 and push against the two first
engaging portions 422, so the two light barrier members 72 won't
block infrared light, and the infrared receiver can receive
infrared light, and can respectively transmit latched state
information of the latch device to central control console. In this
case, the two detectors 71 can be replaced by any other detecting
unit, and shall not be construed as limiting the invention.
[0059] It is worth mentioning that the hook 421, the first engaging
portion 422 and the second engaging portion 423 disposed around the
outer perimeter of the two vertical disks 42 enable the two
latching holes 22, two electromagnetic latches 53, and button latch
62 to be engaged securely only when being on the latched
position.
[0060] When the two vertical disks 42 are on the unlatched
position, the two electromagnetic latches 53 and the button latch
62 reach only the outer perimeter of the two vertical disks 42,
which enables the two light barrier members 72 to move to a
specific place for blocking infrared light, so that the infrared
receiver cannot receive infrared light, and the two detectors 71
can respectively transmit accurate latched state information to the
central control console.
[0061] The illuminating unit 8 includes an illuminator 81 disposed
inside the housing 31. In an embodiment, the illuminator 81 is
disposed in a space above the two retractable bars 52, and can emit
light after being powered on. In addition, the housing 31 surrounds
its inner mechanism and electronic construction, and the light
emitted by the illuminator 81 will pass through the insertion slot
33 to the outside, so that the users can find the insertion slot 33
and insert the latch plate 21 into the insertion slot 33 in a dark
room.
[0062] The latch device further comprises a forcible release unit
9, which includes a release hole 91 opened on the press button 61,
and a release 92 being able to insert into the release hole 91 for
pushing the two electromagnetic latches 53 and the button latch 62.
The release 92 is provided with a first pushing portion for pushing
the two electromagnetic latches 53, and a second pushing portion
for pushing the press button 61. The distance between the first and
the second pushing portions is equal to the pushing distance
between the two electromagnetic latches 53 and the press button 61,
so that the release 92 can be inserted into the release hole 91,
and when pressing the press button 61, the two electromagnetic
latches 53 and the button latch 62 are concurrently separated from
the two first engaging portions 422 and the second engaging portion
423 by the release 92. As a result, the disk unit 4 is unlatched
and the latch plate 21 can be removed from the insertion slot
33.
[0063] The two electromagnetic mechanisms 51 produces
electromagnetic force by electricity, which separates the two
electromagnetic latches 53 from the two first engaging portions
422. When electricity control is out of work and the two
electromagnetic latches 53 cannot be separated from the two first
engaging portions 422, the disk unit 4 cannot be unlatched by the
press button 61. Under this circumstance, the release 92 allows
unlatching.
[0064] It is hard to detect rotary position of each lock cylinders
in a conventional latch. When a breakdown is occurred in one of
lock cylinders, it is difficult to detect such breakdown from its
appearance, and the central control console is also unable to
receive breakdown information. However, the other well-functioning
lock cylinder will still be secured to the latch plate, which leads
the unperceived malfunctioned latch still be utilized. During
operation of haptic feedback facilities, once the rest of
well-functioning lock cylinder has a breakdown, latch plate will be
pulled out immediately and cause accidents.
[0065] The light barrier members 72 are respectively disposed on
the electromagnetic latches 53, and the two detectors 71 confirm
the latched state of the two vertical disks 42 by means of double
detection. Once one of the vertical disks 42 is out of work, the
central control console can immediately obtain information to
prevent the customers from seating themselves in a malfunctioned
seat, and notify the technical staff of repair, which can improve
the safety of conventional latches.
[0066] In an embodiment, the latch device comprises the two
detectors 71 for respectively detecting the position of the two
retractable bars 52, which can respectively confirm whether the two
vertical disks 42 are on the latched position, and whether the two
electromagnetic latches 53 are pushed into the two first engaging
portions 422. Furthermore, the detected information of each
detector 71 will be transmitted to the central control console, so
that the central control console can respectively confirm whether
the two lock cylinders of each latch device are well-functioning or
not.
[0067] When the central control console finds that one of the
detectors 71 is out of work, even though the latch plate 21 can
successfully insert into the insertion slot 33, the central control
console still can detect one of the vertical disks 42 is out of
work, and notify the technical staff of repair, so that the two
lock cylinders can function well and ensure passengers safety.
[0068] With the aforementioned descriptions, the following benefits
of the present method can be obtained:
[0069] 1. Transmitting Latched State Information
[0070] When the two electromagnetic latches 53 move toward the two
vertical disks 42 by pushing force of the two electromagnetic lock
springs 54 and push against the two first engaging portions 422,
the two light barrier member 72 are unable to block infrared light
emitted from the infrared emitter, so that the infrared receiver
can respectively receive infrared signal and can transmit latched
state information of the latch device to central control
console.
[0071] 2. Ensuring Passenger Safety
[0072] The hook 421, the first engaging portion 422 and the second
engaging portion 423 disposed around the outer perimeter of the two
vertical disks 42 enable the two latching holes 22, two
electromagnetic latches 53, and button latch 62 to be engaged
securely only when being on the latched position. When the two
vertical disks 42 are on the unlatched position, the two
electromagnetic latches 53 and the button latch 62 reach only the
outer perimeter of the two vertical disks 42, which enables the two
light barrier members 72 to move to a specific place for blocking
infrared light.
[0073] 3. Identifying Position Under Dark Ambient Condition
[0074] The dim light emitted by the illuminator 81 will pass
through the insertion slot 33 to the outside, so that the users can
find the insertion slot 33 and insert the latch plate 21 into the
insertion slot 33 in a dark room.
[0075] 4. Avoiding the Continual Use of a Malfunctioned Latch
Device
[0076] When the central control console finds that one of the
detectors 71 is out of work, it will determine one of the vertical
disks 42 is out of work and stop operation of haptic feedback
facilities, and notify the technical staff of repair, so that the
two lock cylinders can function well to ensure the passengers
safety. Thus, the disclosed devices are capable of avoiding the
continual use of a malfunctioned latch device.
[0077] In conclusion, the two infrared detectors 71 disposed on the
space beside the two retractable bars 52 can respectively detect
the two light barrier members 72 interlocked with the two
electromagnetic latches 53 for respectively confirming rotary
position of the two vertical disks 42. The illuminating unit 8
disposed in the space above the two retractable bars 52 can help
the users find the insertion slot 33 in a dark room.
[0078] The foregoing detailed description is merely in relation to
an embodiment and shall not be construed as limiting the invention.
It is of course to be understood that many other possible
modifications and variations can be made without departing from the
spirit and scope of the devices and methods as hereinafter
claimed.
* * * * *