CN211648633U - Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening - Google Patents
Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening Download PDFInfo
- Publication number
- CN211648633U CN211648633U CN202020102845.2U CN202020102845U CN211648633U CN 211648633 U CN211648633 U CN 211648633U CN 202020102845 U CN202020102845 U CN 202020102845U CN 211648633 U CN211648633 U CN 211648633U
- Authority
- CN
- China
- Prior art keywords
- port
- valve
- door opening
- emergency
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 230000001629 suppression Effects 0.000 claims description 11
- 230000005764 inhibitory process Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The utility model discloses an arbitrary emergency valve of driver door opening department controls the emergent gas circuit of opening all doors of vehicle, driver emergency valve is connected along separate routes to the gas receiver, the interior emergency valve of each door opening car, the P mouth of the solenoid valve that opens the door fast, the cylinder front end gas port is connected to solenoid valve A mouth that opens the door fast, cylinder rear end gas port is connected to the B mouth, driver emergency valve A mouth is connected first door opening the control unit and is allied oneself with accuse valve P1, P2, arbitrary gas port in the P3 mouth, the car exterior emergency valve of each door opening, this door opening the control unit allies oneself with accuse valve P1 in the car respectively, P2, arbitrary gas port in the P3 mouth, preceding door opening the control unit allies oneself with accuse valve A mouth and next door opening the control unit and allies oneself with accuse valve P1, P2, arbitrary gas port in the P3 mouth is connected, last door opening the control unit allies oneself with accuse valve A mouth and is connected to each door opening the action unit and opens the solenoid valve K mouth. When the automobile is parked, all the automobile doors can be quickly opened by operating any emergency valve no matter whether the automobile doors are opened or closed.
Description
Technical Field
The utility model relates to a gas circuit field of control vehicle door switching, more specifically say, it relates to an arbitrary emergency valve of driver door opening department controls the emergent gas circuit of opening all doors of vehicle.
Background
The vehicle door is closed in the driving process and opened when passengers get on or off the vehicle during parking. A control button is arranged at a driver and is controlled by a circuit. If the emergency occurs, the circuit is disconnected, then a quick-opening emergency valve arranged at a door opening or a driver is opened, residual air in the air cylinder is discharged, and an air path emergency measure is adopted to open the vehicle door. The air path basically controls the emergency valve at the driver to open all doors, but controls the emergency valve at each door opening to open only the door at the door opening where the emergency valve is located, and the doors at other door openings have no response.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art existence, the utility model aims to provide a solve arbitrary emergency valve of driver door opening department of above-mentioned problem and control the emergent gas circuit of opening all doors of vehicle, no matter control on the vehicle driver department or any emergency valve of each door opening department, no matter former door is opened or the closed condition, can both open all vehicle doors, promptly flee for one's life and strive for and guarantee the precious time.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an emergency air path for opening all doors of the vehicle by operating any emergency valve at the driver door opening comprises door opening action units, door opening control units and a driver control unit,
each door opening action unit comprises an air cylinder and a quick door opening electromagnetic valve, each door opening control unit comprises an emergency valve outside the automobile, an emergency valve inside the automobile and a joint control valve, each driver control unit comprises a driver emergency valve, each quick door opening electromagnetic valve is a valve body of a two-position five-way electromagnetic valve combined K-port reversing device provided with an R port, a P port, an S port, an A port and a B port, PA ports of the electromagnetic valves are communicated when the electromagnetic valves are not electrified, BS ports of the electromagnetic valves are communicated when the electromagnetic valves are electrified, and PB ports are communicated with RA ports when the electromagnetic valves are electrified or K ports are subjected to air inlet reversing; the emergency valve is a two-position three-way valve with a port P, a port A and a port R, the port RA is communicated when the emergency valve is not operated, and the port PA is communicated when the emergency valve is operated; the joint control valve is a multi-way pneumatic control valve with a P1 port, a P2 port, a P3 port and an A port, air is respectively fed from the P1 port, the P2 port and the P3 port, only the A port is used for air outlet, and air is fed from the A port, and air is optionally discharged from the P1 port, the P2 port and the P3 port;
the air storage cylinder is connected with a driver emergency valve in a shunt way, the external emergency valve of each door opening, the internal emergency valve of each door opening and the P port of the quick door opening electromagnetic valve are connected, the A port of the quick door opening electromagnetic valve is connected with the air port at the front end of the air cylinder, the B port is connected with the air port at the rear end of the air cylinder, the A port of the driver emergency valve is connected with any one of the ports P1, P2 and P3 of the first door opening control unit joint control valve, the A port of the external emergency valve of each door opening and the A port of the internal emergency valve are respectively connected with any one of the ports P1, P2 and P3 of the joint control valve of the door opening control unit, the A port of the joint control valve of the previous door opening control unit is connected with any one of the ports P1, P2 and P3 of the joint control valve of the next door opening control unit, and the A port of the last.
Any emergency valve at a driver and each door opening is controlled, and all door openings can be quickly opened no matter the original door is opened or closed.
The driver control unit further comprises a suppression valve, the suppression valve is a two-position three-way reset electromagnetic valve with a port P, a port R and a port A, the port PA is communicated when the driver control unit is not electrified, and the port AR is communicated when the driver control unit is electrified; and the port A of the united control valve of the last door opening control unit is connected with the port P of the inhibition valve, and the port A of the inhibition valve is connected to the port K of the quick opening electromagnetic valve of each door opening action unit in a shunting way. When the vehicle runs at a speed of more than or equal to 5 kilometers, the valve is inhibited from being electrified, the PA port of the valve is not communicated, air flow to the K port of the quick opening electromagnetic valve of each door opening action unit cannot be provided, the quick opening electromagnetic valve cannot be reversed, all emergency valves at an operation driver and each door opening are invalid, and the vehicle door in running is prevented from being opened by misoperation.
The further improvement scheme is that the quick opening electromagnetic valve is a small air cylinder integrated quick opening electromagnetic valve or a pilot head modified air pipe connector type quick opening electromagnetic valve.
The utility model discloses beneficial effect:
under emergency, control the utility model discloses driver department, the arbitrary emergency valve of each door opening department carry out the gas circuit switching-over through the solenoid valve that opens the door fast for each door opening department, make all doors of each door opening of vehicle can both be the open mode, no matter the door is originally open or the closed condition.
Drawings
Fig. 1 is a schematic structural diagram of various valves of the present invention, wherein a is an emergency valve, b is a joint control valve, c is a suppression valve, d is a small cylinder integrated type quick opening electromagnetic valve, and e is a pilot head modified air pipe connector type quick opening electromagnetic valve;
FIG. 2 is a gas circuit connection diagram of the embodiment;
FIG. 3 is a schematic diagram of the air path state when the vehicle is stopped or at a speed of less than 5km and all valves are not operated;
FIG. 4 is a schematic diagram of the air path state when the vehicle is stopped or at a speed of less than 5km and the driver emergency valve operates the vehicle door to open according to an embodiment;
FIG. 5 is a schematic view of the air path state of the embodiment when the vehicle is stopped or the speed is less than 5km, and the door is opened by the emergency valve in the middle door vehicle;
FIG. 6 is a schematic diagram of the state of the gas path for controlling the emergency valve of the driver when the suppression valve is powered on during the driving process with the vehicle speed of more than or equal to 5 km.
Detailed Description
The following embodiments are described by taking a two-door opening vehicle including a front door and a middle door as an example, as shown in fig. 1, wherein the emergency valve is a two-position three-way valve having a P port, an a port and an R port, the RA port is open when the emergency valve is not operated, the PA port is open when the emergency valve is operated, and the G321PP press type self-resetting emergency valve manufactured by Ningpo industry automatic control equipment Limited company is not limited thereto, and the vehicle can be pressed, rotated, toggled and the like with the function; the joint control valve is a multi-way pneumatic control valve with a P1 port, a P2 port, a P3 port and an A port, air is respectively fed from the P1 port, the P2 port and the P3 port, only the A port is used for air outlet, air is fed from the A port, and air is optionally discharged from the P1 port, the P2 port and the P3 port, and the valve is a KD-G400 type valve produced by Kaida automobile accessory limited company in Huaian city; the suppression valve is a two-position three-way reset electromagnetic valve with a port P, a port R and a port A, the port PA is communicated when the valve is not electrified, the port AR is communicated when the valve is electrified, and the 3v210-06-NO suppression valve produced by Ningbo Sono industry automatic control equipment company Limited; the quick opening electromagnetic valve is a valve body of a two-position five-way electromagnetic valve with an R port, a P port, an S port, an A port and a B port combined with a K port reversing device, the PA port and the BS port of the electromagnetic valve are communicated when the electromagnetic valve is not electrified, the PB port and the RA port are communicated when the electromagnetic valve is electrified or the K port is subjected to air inlet reversing, for example, a diagram d shows a small cylinder integrated quick opening electromagnetic valve, a TG2522-08WA valve produced by Ningpo industry automatic control equipment Limited company, a diagram e shows a quick opening electromagnetic valve with a guide head modified by a gas pipe connector, and a diagram e shows a TG2522-08T valve produced by Ningpo industry automatic control equipment Limited company.
4.5.5.1 according to the technical requirements of the China's republic of China transportation industry Standard GB 13094-2017, each power control passenger door, whether or not having power supply, can be opened from the inside of the vehicle when the passenger vehicle is static or runs at a speed less than or equal to 5km/h in an emergency, and can also be opened from the outside of the vehicle through an emergency controller when the vehicle door is unlocked. It h) when the driver-operated door does not meet the requirement of 4.5.5.7 b: after the emergency control has been actuated to open the door, it should not be closed if the driver does not actuate the door closing control.
As shown in fig. 2, an emergency air path for opening all doors of a vehicle is controlled by any emergency valve at a driver door opening, and comprises door opening action units, door opening control units and a driver control unit, wherein each door opening action unit comprises an air cylinder 11 and a quick door opening electromagnetic valve 12, each door opening control unit comprises an outside emergency valve 21, an inside emergency valve 22 and a joint control valve 23, and the driver control unit comprises a driver emergency valve 31 and an inhibition valve 32; the air storage cylinder 4 is connected with a driver emergency valve 31 through a plurality of three-way branches, the external emergency valve 21 of each door opening, the internal emergency valve 22 of each door opening and the P port of the quick opening electromagnetic valve 12, the A port of the quick opening electromagnetic valve 12 is connected with the front end air port of the air cylinder 11, the B port is connected with the rear end air port of the air cylinder, the A ports of the driver emergency valve 31, the front door opening control unit, the internal emergency valve 22 of each door opening and the external emergency valve 21 are respectively connected with the P1 of the joint control valve 23 of the front door opening control unit, the port A of the front door opening control unit joint control valve is connected with the port P1 of the middle door opening control unit joint control valve, the ports A of the middle door opening control unit in-vehicle emergency valve 22 and the port A of the out-vehicle emergency valve 21 are respectively connected with the ports P2 and P3 of the middle door opening control unit joint control valve, the port A of the middle door opening control unit joint control valve is connected with the port P of the inhibition valve 32, and the port A of the inhibition valve 32 is connected to the ports K of the quick opening electromagnetic valves of the front door opening action units and the middle door opening action units in a shunting manner.
Fig. 3 is a schematic diagram of the state of the air path when the vehicle is stopped or the vehicle speed is less than 5km and all valves are not operated, and the air path trend is as follows:
at the moment, the driver emergency valve 31, the external emergency valve 21 of each door opening and the internal emergency valve 22 are not controlled and are all in a PA port blockage state, the electromagnetic valve for quickly opening the door of each door opening is not electrified, and the PA port is communicated with the SB port; an air source in the air storage cylinder 4 directly enters a front door and middle door action unit in a shunt way, and is discharged from a P inlet A of a quick opening electromagnetic valve 12 to push a piston rod of an air cylinder 11 to tighten a vehicle door to close; at this time, the gas in the cylinder chamber is exhausted from the gas port at the tail end of the cylinder and exhausted from the B port and the S port of the quick opening electromagnetic valve 12.
If the driver normally opens the door through the electronic control quick door opening electromagnetic valve 12 of the switch door button, then the quick door opening electromagnetic valve is electrified, the PB port of the quick door opening electromagnetic valve is communicated with the AR port of the quick door opening electromagnetic valve, gas in the cylinder enters the B port from the P port of the quick door opening electromagnetic valve 12 and exits, enters the cylinder and reversely pushes the cylinder piston, and gas in the cylinder enters the R port from the A port of the quick door opening electromagnetic valve 12 and exits for exhausting, so that the vehicle door is opened.
FIG. 4 is a schematic diagram of the state of the air path when the vehicle is stopped or the vehicle speed is less than 5km and the driver emergency valve controls the vehicle door to open, the air path trend is as follows;
the driver emergency valve 31 is controlled, the PA port of the driver emergency valve is communicated, the inhibition valve is not electrified at the moment, and the PA port of the driver emergency valve is communicated; one path of the air source in the air storage cylinder 4 directly enters the P port of the front door and middle door action unit quick door opening electromagnetic valve 12 respectively, the other path of the air source enters the A port from the P port of the driver emergency valve 31, enters the A port through the P1 port of the front door control unit joint control valve 23, enters the A port through the P1 port of the middle door control unit joint control valve 23, enters the A port through the P port of the inhibition valve 32, enters the K port of the front door and middle door control unit quick door opening electromagnetic valve 12 along a branch path, the air passage of the quick door opening electromagnetic valve 12 is reversed, the PB port of the quick door opening electromagnetic valve 12 is communicated at the moment, the AR ports are communicated, gas entering the P port of the quick door opening electromagnetic valve 12 of each door opening action unit flows out from the B port, enters the cylinder and reversely pushes the piston of the cylinder, the gas in the cylinder flows out from the A port, the R port and the air inlet of the quick door opening electromagnetic valve 12 and exhausts, the door is opened, and the door is opened no matter whether the door is opened or closed originally.
FIG. 5 is a schematic diagram of the state of the air path when the emergency valve in the vehicle operates the vehicle door to open when the vehicle is stopped or the vehicle speed is less than 5km and the door opening of the middle door according to the embodiment;
the PA port of the emergency valve 22 in the vehicle at the door opening of the middle door is controlled to be communicated, at the moment, the inhibiting valve is not electrified, and the PA port is communicated; one path of the air source in the air storage cylinder 4 directly enters the P port of the front door and middle door action unit quick opening electromagnetic valve 12, the other path of the air source directly enters the A port of the middle door in-vehicle emergency valve 22, enters the A port through the P2 port of the middle door control unit joint control valve 23, enters the A port through the P port of the inhibition valve 32, enters the K port of the front door and middle door control unit quick opening electromagnetic valve 12 in a shunting manner, the air passage of the quick opening electromagnetic valve 12 is reversed, the PB port of the quick opening electromagnetic valve 12 is communicated with the AR port at the moment, the air entering the P port of the quick opening electromagnetic valve 12 of each door opening action unit flows out from the B port, enters the air cylinder to reversely push the air cylinder piston, the air in the air cylinder is exhausted from the R port of the A port of the quick opening electromagnetic valve 12, and the door is opened no matter whether the original door is opened or closed.
According to the technical requirements of special safety facilities of vehicles of urban public vehicles and electric vehicles in the China's republic of people's republic of China standard JT-T1240-2019, the inhibiting function of the 5.7 passenger door controller is that when the vehicles normally run at a speed of more than 5km/h, the passenger door controller is in an inhibited state, so that the safety of passengers is endangered due to the fact that the doors are opened because the emergency valves are operated during the running of the vehicles is prevented; FIG. 6 is a schematic diagram of the state of the gas path for controlling the emergency valve of the driver when the suppression valve is powered on during the driving process with the vehicle speed of more than or equal to 5 km.
At this time, the suppression valve 32 is energized, the PA port is not energized, and the driver emergency valve 31 is operated, and the PA port is open. An air source in the air storage cylinder 4 directly enters a front door and middle door action unit in a shunt way, and is discharged from a P inlet A of a quick opening electromagnetic valve 12 to push a piston rod of an air cylinder 11 to tighten a vehicle door to close; at this time, although the driver emergency valve 31 is operated, the air source can flow out from the inlet a of the port P of the driver emergency valve 31, flow out from the inlet a of the port P1 of the front door control unit joint control valve 23, and flow out from the inlet a of the port P1 of the middle door control unit joint control valve 23, but the PA of the suppression valve 32 is not communicated, the air source is interrupted, so that no effect is produced, and the operation is ineffective.
Similarly, the external emergency valve 21 and the internal emergency valve 22 at each door opening are operated in an invalid mode, and the door is always closed in the running process.
Claims (3)
1. Any emergency valve of driver door opening department controls the emergent gas circuit of opening all doors of vehicle, including each door opening action unit, each door opening the control unit and driver the control unit, its characterized in that:
each door opening action unit comprises an air cylinder (11) and a quick door opening electromagnetic valve (12), each door opening control unit comprises an emergency valve (21) outside the vehicle, an emergency valve (22) inside the vehicle and a joint control valve (23), each driver control unit comprises a driver emergency valve (31), each quick door opening electromagnetic valve is a valve body of a two-position five-way electromagnetic valve combined K-port reversing device with an R port, a P port, an S port, an A port and a B port, the PA ports of the electromagnetic valves are communicated and the BS ports are communicated when the electromagnetic valves are not electrified, and the PB ports are communicated and the RA ports are communicated when the electromagnetic valves are electrified or K ports are subjected to air intake reversing; the emergency valve is a two-position three-way valve with a port P, a port A and a port R, the port RA is communicated when the emergency valve is not operated, and the port PA is communicated when the emergency valve is operated; the joint control valve is a multi-way pneumatic control valve with a P1 port, a P2 port, a P3 port and an A port, air is respectively fed from the P1 port, the P2 port and the P3 port, only the A port is used for air outlet, and air is fed from the A port, and air is optionally discharged from the P1 port, the P2 port and the P3 port;
the air storage cylinder (4) is connected with a driver emergency valve (31) in a shunt way, the external emergency valve (21) of each door opening, the internal emergency valve (22) of the automobile and the P port of the quick door opening electromagnetic valve (12), the A port of the quick door opening electromagnetic valve (12) is connected with the air port at the front end of the air cylinder (11), the B port is connected with the air port at the rear end of the air cylinder, the A port of the driver emergency valve (31) is connected with any one of the P1, P2 and P3 ports of the first door opening control unit joint control valve (23), and the external emergency valve (21) of each door opening, the A port of the in-vehicle emergency valve (22) is respectively connected with any one of the ports P1, P2 and P3 of the joint control valve (23) of the door opening control unit, the A port of the joint control valve (23) of the previous door opening control unit is connected with any one of the ports P1, P2 and P3 of the joint control valve (23) of the next door opening control unit, and the A port of the joint control valve (23) of the last door opening control unit is connected to the K port of the quick door opening electromagnetic valve (12) of each door opening action unit in a shunting manner.
2. The driver's emergency valve at the doorway of claim 1 operates an emergency air circuit that opens all doors of the vehicle, characterized by: the driver control unit also comprises a suppression valve (32), the suppression valve is a two-position three-way reset electromagnetic valve with a P port, an R port and an A port, the PA port is communicated when the driver control unit is not electrified, and the AR port is communicated when the driver control unit is electrified; and the A port of the final door opening control unit joint control valve (23) is connected with the P port of the inhibition valve (32), and the A port of the inhibition valve (32) is connected to the K port of each door opening action unit quick door opening electromagnetic valve (12) in a shunting manner.
3. The emergency air circuit for opening all doors of a vehicle controlled by any emergency valve at a driver door opening as claimed in claim 1 or 2, wherein: the quick opening electromagnetic valve (12) is a small air cylinder integrated quick opening electromagnetic valve or a guide head modified air pipe connector type quick opening electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020102845.2U CN211648633U (en) | 2020-01-17 | 2020-01-17 | Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020102845.2U CN211648633U (en) | 2020-01-17 | 2020-01-17 | Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211648633U true CN211648633U (en) | 2020-10-09 |
Family
ID=72682455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020102845.2U Withdrawn - After Issue CN211648633U (en) | 2020-01-17 | 2020-01-17 | Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211648633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075791A (en) * | 2020-01-17 | 2020-04-28 | 淮安市凯达汽车配件有限公司 | Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening |
-
2020
- 2020-01-17 CN CN202020102845.2U patent/CN211648633U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075791A (en) * | 2020-01-17 | 2020-04-28 | 淮安市凯达汽车配件有限公司 | Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening |
| CN111075791B (en) * | 2020-01-17 | 2024-05-17 | 淮安市凯达汽车配件有限公司 | Emergency air circuit for controlling and opening all doors of vehicle by any emergency valve at driver door opening |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4546845A (en) | Electropneumatic door control | |
| CN211648633U (en) | Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening | |
| CN110901569A (en) | Novel passenger car door safety system and control strategy | |
| CN211776758U (en) | Emergency control gas circuit for controlling any emergency valve to continuously open all doors of vehicle | |
| CN110984758B (en) | Emergency control gas circuit for controlling any emergency valve to continuously open all doors of vehicle | |
| CN113323937B (en) | Valve island | |
| CN210396470U (en) | Single valve for restraining fast-opening door opening and slow-opening vehicle door emergency opening air circuit at driver | |
| CN210067771U (en) | Manual vehicle door emergency opening gas circuit system with inhibition function | |
| CN210067770U (en) | Emergency opening gas circuit system for vehicle door at driver | |
| CN111075791A (en) | Emergency air circuit for opening all doors of vehicle by controlling any emergency valve at driver door opening | |
| CN211549294U (en) | Emergency control gas circuit for controlling any emergency valve to open all doors of vehicle | |
| CN211598200U (en) | Emergency control gas circuit for opening all doors of vehicle by driver emergency valve | |
| CN211524489U (en) | Full-quick-opening emergency control gas circuit for opening all doors of vehicle by driver emergency valve | |
| CN210483368U (en) | Single-valve emergency opening air path for restraining all quick-opening vehicle doors at door opening of driver | |
| CN210316977U (en) | Automatic quick-opening vehicle door emergency opening air path system at door opening of driver | |
| CN111021869A (en) | Protection system and protection strategy for forbidding door opening in driving process | |
| CN210396469U (en) | Single-valve-restrained manual vehicle door emergency opening air circuit | |
| CN210164723U (en) | Single-valve emergency opening air path for inhibiting quick-opening door opening of driver and quick-opening door of vehicle | |
| JP2565869Y2 (en) | Control circuit of pneumatic automatic door for automobile | |
| CN211549293U (en) | One-key door opening gas circuit system | |
| JP2553204Y2 (en) | Door fastening device for railway vehicle doors | |
| KR100380439B1 (en) | door opening and closing device for bus | |
| CN212079015U (en) | Protection system for forbidding door opening in driving process | |
| CN210714274U (en) | Stable and rapid exhaust gas path for emergency opening of vehicle door | |
| CN101321924A (en) | Pneumatic arrangement for double leaf bus doors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201009 Effective date of abandoning: 20240517 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201009 Effective date of abandoning: 20240517 |