CN112459634A - Double-cam locking device - Google Patents
Double-cam locking device Download PDFInfo
- Publication number
- CN112459634A CN112459634A CN202011062365.9A CN202011062365A CN112459634A CN 112459634 A CN112459634 A CN 112459634A CN 202011062365 A CN202011062365 A CN 202011062365A CN 112459634 A CN112459634 A CN 112459634A
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- locking
- cam
- control
- roller
- bearing
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- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 9
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 17
- 230000009471 action Effects 0.000 description 11
- 238000000926 separation method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/36—Locks for passenger or like doors
- E05B83/363—Locks for passenger or like doors for railway vehicles
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B79/00—Mounting or connecting vehicle locks or parts thereof
- E05B79/10—Connections between movable lock parts
- E05B79/12—Connections between movable lock parts using connecting rods
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/06—Electrical using rotary motors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/36—Locks for passenger or like doors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
- E05B85/20—Bolts or detents
- E05B85/24—Bolts rotating about an axis
Landscapes
- Lock And Its Accessories (AREA)
Abstract
The invention discloses a double-cam locking device, which comprises a slider-crank mechanism with a locking control structure, wherein the rotation center of the slider-crank mechanism is positioned on a bearing roller seat, the bearing roller seat is fixedly connected with a bearing roller and a locking cam, and the bearing roller rolls in a longitudinal slideway; the control cam and the swing rod rotate coaxially under the driving of external force; the middle part of the oscillating bar is hinged with one end of a linkage rod, and the other end of the linkage rod is connected with a control and locking roller; the control roller is driven by the control cam, the locking roller moves along the outer contour line of the locking cam under the drive of the control cam, when the locking roller falls into the locking step of the locking cam, the control cam continues to rotate, the locking roller is prevented from accidentally dropping out of the locking step, locking is achieved, and the control cam is subjected to reset torsion spring torque pointing to the locking direction. The invention is suitable for the bearing mechanism of the single-opening or double-opening sliding plug door system, improves the bearing capacity of the locking device, adapts to the dynamic characteristic of the motion of the door system, and can prevent accidental unlocking caused by impact.
Description
Technical Field
The invention belongs to a rail vehicle door system, and particularly relates to a double-cam locking device.
Background
The locking device of the present electric double-opening sliding plug door system mainly comprises two types of active locking and passive locking, and the passive locking device mainly comprises an LS lock, a whole-course lock and an over-dead-point lock.
The screw rod of the LS lock is a variable-lead screw rod, the helical angle of the locking section is zero, the bearing capacity of the LS lock is small due to the limitation of structural space, the screw rod and the locking pin are mostly in point contact in actual situations, and the contact stress is relatively large; the whole locking device adopts a controllable isolator principle, the operation speed of a driving part is higher than that of a driven part in the whole action logic process, and the operation process of a door system is a speed change process, so that the locking device is possibly stuck, and the adaptability to the dynamic characteristic of the door system is insufficient; the over-dead-point lock usually adopts the principle that the crank and the slide block pass the dead point, the structure action principle is simple, the bearing capacity is strong, but the accidental unlocking caused by the separation of the crank from the over-dead-point position is prevented.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a double-cam locking device which can improve the bearing capacity of the locking device and adapt to the dynamic characteristic of the motion of a door system.
The technical scheme is as follows: the invention comprises a crank block mechanism with a locking control structure, wherein the locking control structure comprises a power shaft, a control cam, a locking cam, a control roller, a locking roller, a linkage rod and a return spring; the control cam is fixedly connected with the power shaft and driven by external force; the locking cam is fixedly connected with the lower half part of a bearing roller seat of the slider-crank mechanism; one end of the linkage rod is hinged with the middle part of a swing rod of the slider-crank mechanism, and the other end of the linkage rod is provided with a control roller and a locking roller; the control roller is arranged in the cam groove of the control cam; in the non-locking position, the control roller is driven by the control cam, and at the moment, the locking roller moves along the outer contour line of the locking cam; when the locking roller moves to completely fall into a locking step of the locking cam, the control cam further rotates towards the door closing direction; the return spring applies a holding moment in the door closing direction to the control cam.
The central line of the cam groove of the control cam is divided into a driving section, a locking control section and a connecting section, the driving section of the control cam is provided with a pressure angle, the locking control section is an arc line around a rotating center, and the connecting section is an arc line tangent to the driving section and the locking control section; the drive section of control cam has the pressure angle, can realize the drive to control roller to pressing control roller to rotation center, the pitch arc of locking control section makes the locking roller after falling into the locking step, and control cam can continue to rotate to the cam groove end, and the locking roller can't deviate from the locking step, realizes the locking function.
The control cam is coaxial with the rotation center of the swing rod.
The locking step of the locking cam adopts a concentric circular arc structure with different radiuses, and the connecting line of different circular arcs points to the center of the circular arc; the centers of the large and small circular arcs of the locking cam are coaxial with the center of the oscillating bar, and the circular arc structure can effectively reduce contact stress.
A fillet is arranged between the large arc of the locking cam and the connecting line, a fillet transition is also arranged between the small arc and the connecting line, and the fillet is adapted to the locking roller; the large circular arc and the connecting line round corner ensure that the locking roller can smoothly slide into the locking step and reduce the contact stress; the small arc and the connecting line round corner are used for bearing the load of the door system in a locking state.
The control roller and the locking roller are coaxially arranged; the control roller moves in a cam groove of the control cam; the locking roller and the control roller are respectively arranged, so that the motion resistance can be reduced.
The reset spring is arranged at one end far away from the control cam, and applies reset torque to the control cam through the power shaft, so that the control cam is prevented from rotating towards the door opening direction under the unexpected condition;
the bearing roller seat is provided with a through hole, and the power shaft is rotatably connected with the bearing roller seat through the through hole and can be positioned.
The crank slider mechanism also comprises a connecting rod, a bearing roller and a longitudinal slideway; the upper half part of the bearing roller seat is fixedly connected with a bearing roller, and the bearing roller rolls in the longitudinal slideway; the longitudinal slideway is hinged with one end of a connecting rod, the other end of the connecting rod is hinged with the upper end of a swing rod, the lower end of the swing rod is supported on a bearing in the bearing roller seat, and the swing rod is rotatably connected with the bearing roller seat.
Has the advantages that: compared with the prior art, the invention has the beneficial effects that: (1) the kinematic pair on the bearing line is widely in a low-pair structure, so that the bearing capacity is high; (2) the motion process in the door system is composed of a plurality of acceleration and deceleration sections, and the invention has better adaptability to the dynamic process of the door system; (3) the door system will bear great impact load under specific conditions, and under the action of the return spring, the control cam cannot rotate reversely, so that the locking roller can be effectively prevented from being separated from the locking step, and better safety is achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is a schematic view of the device of the present invention in a door closing initial position;
FIG. 4 is a schematic view of the apparatus of the present invention when the locking roller enters the locking step;
FIG. 5 is a schematic view of the device of the present invention in a locked position.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and the attached drawings.
As shown in fig. 1 and 2, the device of the invention comprises a power shaft 1, a control cam 2, a locking cam 3, a control roller 4, a locking roller 5, a linkage rod 6, a swing rod 7, a connecting rod 8, a bearing roller 9, a bearing roller seat 10, a longitudinal slideway 11 and a return spring 12. The above components can be divided into a crank block mechanism and a locking control structure.
The crank block mechanism comprises a swing rod 7, a connecting rod 8, a bearing roller 9, a bearing roller seat 10 and a longitudinal slideway 11. The crank rotation center of the crank slide block mechanism is positioned on a bearing roller seat 10, the position of the upper half part of the bearing roller seat 10 close to the top is fixedly connected with two bearing rollers 9, and the two bearing rollers 9 roll in a longitudinal slideway 11. The longitudinal slideway 11 is hinged with one end of a connecting rod 8, the other end of the connecting rod 8 is hinged with the upper end of a swing rod 7, the lower end of the swing rod 7 is supported on a bearing in a bearing roller seat 10, and the swing rod 7 can rotate around the center of a bearing hole of the bearing roller seat 10. The above structure can realize the basic function of the crank-slider mechanism, namely, the rotation of the swing rod 7 and the linear motion of the bearing roller 9 along the longitudinal slideway 11 can be mutually converted. In practical applications, the longitudinal slide 11 may be used as a frame of the slider-crank mechanism.
The locking control structure comprises a power shaft 1, a control cam 2, a locking cam 3, a control roller 4, a locking roller 5, a linkage rod 6 and a return spring 12. The control cam 2 is fixedly connected with the power shaft 1 and supported in a bearing hole of the bearing roller seat 10, the control cam 2 and the power shaft 1 are driven by external force to rotate, and the rotating center of the control cam is coaxial with the oscillating bar 7; the locking cam 5 is fixedly connected with the lower half part of the bearing roller seat 10; one end of the linkage rod 6 is hinged with the middle part of the swing rod 7, and the other end of the linkage rod 7 is provided with a control roller 4 and a locking roller 5. The bearing roller seat 10 is provided with a through hole, and the power shaft 1 is rotatably connected with the bearing roller seat 10 through the through hole. In the non-locking position, the control roller 4 is driven by the control cam 2 due to the existence of the pressure angle of the cam groove driving section, and then the oscillating bar is driven by the linkage rod; at this time, the locking roller 5 moves along the outer contour line of the locking cam 3; when the locking roller 5 moves from the unlocked position in the door-closing direction to a position completely falling into the locking step of the locking cam 3, which is the locking position, the control cam 2 is further rotated in the door-closing direction. A return spring 12 is arranged at the end remote from the control cam 2, which return spring 12 applies a return moment to the control cam 2 via the power shaft 1.
The locking steps of the locking cam 3 adopt concentric circular arc structures with different radiuses, the locking steps are connected through a connecting line pointing to the center, and the large circular arc and the small circular arc are connected with the connecting line through a fillet; the large circular arc and the connecting line round corner ensure that the locking roller can smoothly slide into the locking step and reduce the contact stress; the small circular arc and the connecting line circular bead are used for bearing the load of the door system in a locking state, and the circular arc structure can effectively reduce the contact stress. The centers of the large and small circular arcs of the locking cam 3 are coaxial with the center of the swing rod 7. In the non-locking position, the locking roller moves along the outline of the outer wheel of the locking cam;
the control roller 4 and the lock roller 5 are coaxially arranged, and the control roller 4 is provided in the cam groove of the control cam 2 and moves in the cam groove. The cam groove central line of control cam 2 divide into drive section, locking control section and linkage segment, and the drive section has certain pressure angle, can realize the drive to control roller 4 to pressing control roller 4 to the center of rotation, locking control section is the pitch arc around the rotation center, and the linkage segment is the pitch arc tangent with drive section and locking control section, and the width of cam groove suits with control roller 4's diameter. Locking control section pitch arc for locking gyro wheel 5 is falling into the locking step after, and control cam 2 can further rotate to locking control section terminal point under the effect of drive moment and reset spring moment, because this section circular arc center is control cam 2 rotation center, consequently, can prevent that locking gyro wheel 5 from deviating from the step of locking cam 3, realizes the locking. The return spring 12 applies a holding moment in the door closing direction to the control cam 2 to prevent the control cam 2 from being unlocked by an accidental reverse rotation.
The door opening and closing process of the door system is divided into four situations of electric door closing, electric door opening, manual door closing and emergency unlocking, the structure of the invention is directly related to the actions of the sliding plug section under the four situations, and the structures are described one by combining with the figures.
Electric door closing process:
as shown in fig. 3, at the start of electric door closing, the locking roller 5 is in the unlocked position, i.e., the locking roller 5 is on the major arc of the locking cam, and the control roller 4 is in contact with the cam groove driving section of the control cam 2. The control cam 2 and the overpower shaft 1 are driven by torque in the external door closing direction to rotate, and due to the existence of a pressure angle of a cam groove driving section, the control roller 4 is driven by the control cam 2, so that the link rod 6 drives the swing rod 7 to rotate anticlockwise, and the control cam and the overpower shaft are converted into translation of the bearing roller 9 in the longitudinal slide way 11 in the door closing direction through the slider-crank mechanism.
As shown in fig. 4, when the locking roller 5 moves from the unlocking position to the closing direction to reach the locking step of the locking cam, the locking roller 5 is pressed from the major arc to the minor arc of the locking cam 3 due to the pressure angle of the driving section of the control cam 2, and finally completely enters the locking step.
As shown in fig. 5, the control cam 2 can further rotate to the end point of the locking control section under the combined action of the moment in the door closing direction and the moment of the return spring, and the arc center of the section is the rotation center of the control cam, so that the locking roller can be prevented from coming off the step of the locking cam, locking is realized, and the electric door closing process is finished.
In the locked state, the swing of the swing link 7 is inhibited, but the horizontal acting forces of the fixed end of the connecting rod 8 and the bearing roller seat 10 are not collinear, and the moment generated by the action is eliminated by the acting forces between the two bearing rollers 9 and the longitudinal slideway 11.
It should be noted that the separation of the locking roller 5 and the control roller 4 is not necessary for the operation principle, but is considered to reduce the movement resistance. In principle, several rollers can be considered as cylindrical features on the linkage rod 6. Since the position of the center of gravity of the control cam 2 is close to the center of rotation thereof and since the return spring 12 applies a moment in the door-closing direction to the control cam, the control cam 2 cannot be reversed in the event of an impact, and thus accidental unlocking of the locking device can be prevented.
Electric door opening process:
this process is the reverse of the electrical door closing process.
After receiving the door opening instruction, the motor sends out the reverse moment of opening the door, and control cam 2 rotates clockwise, and after the locking control section rotates and accomplishes, control roller 4 is lifted along clockwise to circular arc linkage segment and drive section cam groove to make locking roller 5 leave the locking step of locking cam 3 through gangbar 6, can realize electronic unblock function after leaving completely.
Then, the control cam 2 continues to rotate clockwise under the action of the door opening torque of the motor, and the subsequent action process is the reverse process of the door closing action. And when the swing rod 7 swings to the maximum position for opening the door, the electric door opening process is finished.
Manual door closing process:
as shown in fig. 3, when the door is closed manually, the bearing roller seat 10 moves to the right under the action of manual force, so that the swing rod 7 moves counterclockwise, and the swing rod 7 drags the linkage rod 6 to drive the control roller 4, and further drive the control cam 2 to rotate counterclockwise. In the process, the locking roller 5 moves along the great circle of the locking cam 3 in the direction of the locking step. The position of the locking step corresponds to the movement terminal of the bearing roller seat 10, when the movement of the bearing roller seat 10 towards the door closing direction is stopped, the locking roller 5 moves to the step position entering the locking cam 3, under the combined action of the inertia force of each moving part and the reset torque force of the reset spring 12, the locking roller 5 completely falls into the step, and then the control cam 2 continues to rotate, so that the arc line at the tail end of the cam groove presses the control roller 4 to realize locking, thereby realizing the manual door closing function.
Emergency unlocking process:
in emergency unlocking, the control cam 2 is rotated clockwise by an external device, and then the unlocking principle is the same as that of electric unlocking.
Claims (9)
1. A dual cam lock device characterized by: the locking mechanism comprises a crank block mechanism with a locking control structure, wherein the locking control structure comprises a power shaft (1), a control cam (2), a locking cam (3), a control roller (4), a locking roller (5), a linkage rod (6) and a reset spring (12); the control cam (2) is fixedly connected with the power shaft (1) and driven by external force; the locking cam (3) is fixedly connected with the lower half part of a bearing roller seat (10) of the slider-crank mechanism; one end of the linkage rod (6) is hinged with the middle part of a swing rod (7) of the slider-crank mechanism, and the other end of the linkage rod (6) is provided with a control roller (4) and a locking roller (5); the control roller (4) is arranged in the cam groove of the control cam (2); in the non-locking position, the control roller (4) is driven by the control cam (2), and at the moment, the locking roller (5) moves along the outer contour line of the locking cam (3); when the locking roller (5) moves to completely fall into the locking step of the locking cam (3), the control cam (2) further rotates towards the door closing direction; the return spring (12) applies a holding moment in the door closing direction to the control cam (2).
2. The dual cam locking device of claim 1, wherein: the center line of the cam groove of the control cam (2) is divided into a driving section, a locking control section and a connecting section; the driving section of the control cam (2) is provided with a pressure angle, the locking control section is an arc line around the rotation center, and the connecting section is an arc line tangent to the driving section and the locking control section.
3. The dual cam locking device of claim 1 wherein: the locking steps of the locking cam (3) adopt concentric circular arc structures with different radiuses, and the connecting lines of different circular arcs point to the centers of the circular arcs; the centers of the large and small arcs of the locking cam (3) are coaxial with the center of the swing rod (7).
4. The dual cam locking device of claim 3, wherein: a fillet is arranged between the large arc of the locking cam (3) and the connecting line, a fillet transition is also arranged between the small arc and the connecting line, and the fillet is matched with the locking roller (5).
5. The dual cam locking device of claim 1, wherein: the control roller (4) and the locking roller (5) are coaxially arranged; the control roller (4) moves in a cam groove of the control cam (2).
6. The dual cam locking device of claim 1, wherein: the return spring (12) is arranged at one end far away from the control cam (2), and the return spring (12) applies a return moment to the control cam (2) through the power shaft (1).
7. The dual cam locking device of claim 1, wherein: the bearing roller seat (10) is provided with a through hole, and the power shaft (1) is rotationally connected with the bearing roller seat (10) through the through hole.
8. The dual cam locking device of claim 1, wherein: the width of the cam groove on the control cam (2) is adapted to the diameter of the control roller (4).
9. The dual cam locking device of any one of claims 1 to 8, wherein: the crank slider mechanism also comprises a connecting rod (8), a bearing roller (9) and a longitudinal slideway (11); the upper half part of the bearing roller seat (10) is fixedly connected with a bearing roller (9), and the bearing roller (9) rolls in a longitudinal slideway (11); the longitudinal slideway (11) is hinged with one end of the connecting rod (8), the other end of the connecting rod (8) is hinged with the upper end of the oscillating rod (7), the lower end of the oscillating rod (7) is supported on a bearing in the bearing roller seat (10), and the oscillating rod (7) is rotatably connected with the bearing roller seat (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011062365.9A CN112459634B (en) | 2020-09-30 | 2020-09-30 | Double-cam locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011062365.9A CN112459634B (en) | 2020-09-30 | 2020-09-30 | Double-cam locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112459634A true CN112459634A (en) | 2021-03-09 |
| CN112459634B CN112459634B (en) | 2024-08-02 |
Family
ID=74833798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011062365.9A Active CN112459634B (en) | 2020-09-30 | 2020-09-30 | Double-cam locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112459634B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1254820A2 (en) * | 2001-05-04 | 2002-11-06 | Westinghouse Air Brake Technologies Corporation | Central lock mechanism |
| DE10343359A1 (en) * | 2003-09-14 | 2005-04-14 | Fahrzeugtechnik Dessau Ag Railroad Technologies | Locking/unlocking device for a two-leafed door for a vehicle, especially a pivoting sliding door for a rail vehicle, comprises a spring-loaded pivoting arm arranged on a support at the height of a guide and equipped with two catch elements |
| KR20070032359A (en) * | 2004-07-06 | 2007-03-21 | 존 필립 체발리어 | Latch arrangement |
| JP2008075381A (en) * | 2006-09-22 | 2008-04-03 | Art:Kk | Electric lock device |
| JP2016199171A (en) * | 2015-04-10 | 2016-12-01 | 株式会社京三製作所 | Platform fence |
| CN107740653A (en) * | 2017-11-15 | 2018-02-27 | 南京康尼机电股份有限公司 | Singly open sliding plug door system |
| CN108756571A (en) * | 2018-05-29 | 2018-11-06 | 南京康尼机电股份有限公司 | A kind of compact emergency unlocking device |
| CN110295804A (en) * | 2019-06-18 | 2019-10-01 | 上海嘉成轨道交通安全保障系统股份公司 | The passive locks and gate of gate |
| CN110541634A (en) * | 2018-05-29 | 2019-12-06 | 比亚迪股份有限公司 | Locking mechanism for sliding plug door, sliding plug door and vehicle |
| CN215291972U (en) * | 2020-09-30 | 2021-12-24 | 南京康尼机电股份有限公司 | Double-cam locking device |
-
2020
- 2020-09-30 CN CN202011062365.9A patent/CN112459634B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1254820A2 (en) * | 2001-05-04 | 2002-11-06 | Westinghouse Air Brake Technologies Corporation | Central lock mechanism |
| DE10343359A1 (en) * | 2003-09-14 | 2005-04-14 | Fahrzeugtechnik Dessau Ag Railroad Technologies | Locking/unlocking device for a two-leafed door for a vehicle, especially a pivoting sliding door for a rail vehicle, comprises a spring-loaded pivoting arm arranged on a support at the height of a guide and equipped with two catch elements |
| KR20070032359A (en) * | 2004-07-06 | 2007-03-21 | 존 필립 체발리어 | Latch arrangement |
| JP2008075381A (en) * | 2006-09-22 | 2008-04-03 | Art:Kk | Electric lock device |
| JP2016199171A (en) * | 2015-04-10 | 2016-12-01 | 株式会社京三製作所 | Platform fence |
| CN107740653A (en) * | 2017-11-15 | 2018-02-27 | 南京康尼机电股份有限公司 | Singly open sliding plug door system |
| CN108756571A (en) * | 2018-05-29 | 2018-11-06 | 南京康尼机电股份有限公司 | A kind of compact emergency unlocking device |
| CN110541634A (en) * | 2018-05-29 | 2019-12-06 | 比亚迪股份有限公司 | Locking mechanism for sliding plug door, sliding plug door and vehicle |
| CN110295804A (en) * | 2019-06-18 | 2019-10-01 | 上海嘉成轨道交通安全保障系统股份公司 | The passive locks and gate of gate |
| CN215291972U (en) * | 2020-09-30 | 2021-12-24 | 南京康尼机电股份有限公司 | Double-cam locking device |
Non-Patent Citations (1)
| Title |
|---|
| 王局;: "车门35C制动器结构、原理及典型故障分析", 现代城市轨道交通, no. 03, 10 June 2012 (2012-06-10) * |
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| Publication number | Publication date |
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| CN112459634B (en) | 2024-08-02 |
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