CN220349686U - Emergency evacuation door ramp with movable pedal and emergency evacuation door - Google Patents
Emergency evacuation door ramp with movable pedal and emergency evacuation door Download PDFInfo
- Publication number
- CN220349686U CN220349686U CN202321586899.0U CN202321586899U CN220349686U CN 220349686 U CN220349686 U CN 220349686U CN 202321586899 U CN202321586899 U CN 202321586899U CN 220349686 U CN220349686 U CN 220349686U
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- emergency evacuation
- pedals
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- 238000011084 recovery Methods 0.000 claims abstract description 26
- 230000007306 turnover Effects 0.000 claims abstract description 16
- 230000002452 interceptive effect Effects 0.000 claims abstract 4
- 238000013016 damping Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 description 8
- 238000004064 recycling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model discloses an emergency escape door ramp with movable pedals, which comprises ramp upright posts, ramp components and ramp recovery pull belts, wherein the tail ends of multi-stage pedals formed by the ramp components are provided with turnover or telescopic movable pedals. When the evacuation door is unfolded, the movable pedal can not influence the landing of the pedal main body when the evacuation ramp is at a special position interfering with the track, and meanwhile, the integrity of the pedal can be maintained under the condition that the evacuation ramp is not interfering with the track, so that the stability and safety of the ramp are improved, and the problems that the tail end of the evacuation ramp is suspended and cannot land easily to cause unstable evacuation ramp and personnel safety when the existing evacuation ramp is interfering with the track or the spike are solved.
Description
Technical Field
The utility model relates to the technical field of emergency evacuation doors for rail transit, in particular to an emergency evacuation door ramp with a movable pedal and an emergency evacuation door.
Background
The emergency evacuation door is an emergency escape device for rail transit vehicles, can be used for evacuating people in emergency situations, is a most main component part, namely an emergency evacuation ramp, generally adopts an M-shaped folding ramp, can greatly save space when the ramp is folded, can form a ramp of 24-26 degrees when the ramp is unfolded, and can be used for evacuating people. The emergency evacuation ladder for the ramp type subway, disclosed as the emergency evacuation ladder for the ramp type subway for 2009200341547, is made of novel materials such as aluminum alloy, aluminum honeycomb and the like, is integrally of a four-fold ramp structure, is opened by adopting a sling suspension structure, is folded by adopting a ratchet wheel mode, and comprises four groups of foldable pedals, connecting rods, slings, a base, stand columns, high damping air springs and ratchet wheels. The emergency evacuation ladder occupies small space after being folded, does not influence the transparent area of the escape door glass, and is more beneficial to evacuating passengers when in emergency evacuation due to the ramp structure, and the folding is convenient. The opening time of the emergency evacuation ladder is shortened, and the chance of evacuating and escaping passengers is increased. The folding evacuation ramp is easy to shrink and tilt during personnel trampling during evacuation, the ramp locking mechanism is additionally arranged between the pedal and the connecting rod of the existing evacuation door ramp in the CN201920742854.5 locking mechanism for preventing the emergency evacuation door from unlocking and tilting, the ramp is prevented from tilting during trampling, the locking mechanism is connected with the ratchet wheel pull belt, the folding and unfolding of the ramp can be controlled, and the automatic locking and the direct unlocking of the locking mechanism can also be controlled. Although the stability of the evacuation door ramp can be further improved, when a vehicle is positioned at a specific position, the front end of the existing evacuation ramp can interfere with a track or a spike during deployment, so that the ramp is not unfolded smoothly. The tail end of the evacuation ramp is higher than the track, namely the tail end of the evacuation ramp is not contacted with the ground, so that on one hand, in the process of people evacuation, the suspended height of the tail end easily causes the weightlessness of 'stepping empty' of evacuation personnel, thereby leading to falling or safety of the evacuation personnel; on the other hand, the suspension of the tail end of the escape ramp lacks enough support, and when the tail end ramp leaves, the ramp can rebound due to the fact that pressure is instantaneously lost, so that the stability of the ramp is affected.
Disclosure of Invention
The utility model aims to solve the technical problems that when the existing evacuation ramp interferes with a track or a spike at a special position, the tail end of the evacuation ramp is suspended and cannot fall to the ground, so that the evacuation ramp is unstable and the safety of personnel is insufficient easily, and provides an emergency evacuation door ramp with movable pedals.
Another technical problem to be solved by the present utility model is to provide an emergency evacuation door comprising the emergency evacuation door ramp with movable pedals as described above.
The aim of the utility model is realized by the following technical scheme:
the emergency evacuation door ramp with the movable pedals comprises ramp upright posts, ramp components, ramp recovery pull belts and connecting rods, wherein the ramp upright posts are fixed on two sides of the ramp components, the bottom of each ramp upright post is hinged with the ramp component, the top of each ramp upright post is provided with a recovery handle, the recovery handles are connected with the ramp components through the ramp recovery pull belts, the ramp components are formed by connecting multistage pedals in a hinged mode, and the side surfaces of the multistage pedals are provided with the connecting rods; the movable pedal is arranged in the area where the tail pedal of the multistage pedal interferes with the track. According to the utility model, the part of the final-stage pedal, which is interfered with the track, is arranged as the movable pedal, so that the landing of the pedal body is not influenced when the final-stage pedal is interfered with the track, and the stability and the safety of the evacuation ramp are improved.
Further, the movable pedal is a telescopic movable pedal, the telescopic movable pedal comprises a telescopic pedal, a track and a telescopic piece, the telescopic pedal is arranged on the tail end pedal through the track, and a telescopic piece for controlling the telescopic pedal to slide is arranged between the telescopic pedal and the tail end pedal. When the multistage pedals are unfolded, the movable pedals slide and extend out, and when the evacuation ramp does not interfere with the track or the spike, the movable pedals extend out completely and are in flush contact with the final stage pedals; when the escape ramp interferes with the track or spike, the movable pedal part extends out, and the final pedal descends to touch the ground.
Further, a limiting device for extending the extending length of the telescopic pedal is arranged on the tail pedal, and the tail pedal is kept flush with the final pedal when the tail pedal is fully extended.
Further, a locking device for keeping the telescopic pedal in a contracted state is arranged on the tail pedal.
Further, the movable pedal is a turnover movable pedal, the turnover movable pedal comprises a turnover pedal, a hinge and a bottom beam, the turnover pedal is arranged on the final-stage pedal through the hinge, the movable pedal can rotate around the hinge towards the upward direction of the surface of the final-stage pedal, and the final-stage pedal is provided with the bottom beam to limit the bottom beam of the movable pedal, so that the movable pedal cannot turn downwards. Normally, the movable pedal and the final pedal can be pieced together to form a finished pedal. When the ramp is unfolded, the movable pedal interfered with the track is lifted, and other parts of the final pedal still sink to touch the bottom to serve as a supporting point of the evacuation ramp. When the ramp is folded, the movable pedal can be folded downwards along with the final pedal.
Furthermore, the emergency evacuation door ramp is also provided with handrails, so that evacuation personnel are prevented from falling from two sides.
Further, the handrail comprises support rods arranged on two sides of the multistage pedal and a handrail chain for connecting the support rods and the ramp upright posts.
Further, a buffer damping device is arranged at the joint of the ramp upright post and the ramp.
Further, a hooking and locking device is arranged between the multistage pedals and the connecting rods, so that the stability of the evacuation ramp is improved.
Further, the hook lock device comprises a lock hook and a hanging rod matched with the lock hook, the lock hook is arranged on the side face of the multistage pedal, and the hanging rod is arranged on the connecting rod. When the ramp is unfolded in place, the pedal and the connecting rod are fixed by the hook lock, so that the four sides formed by the connecting rod and the pedal are formed into a stable triangle structure, the emergency ramp is stably dispersed, and the ramp is prevented from tilting. When the escape ramp is recovered, the ramp recovery pull belt drives the lock hook to unlock, and simultaneously, the pedal is pulled to fold and recover.
Further, the recovery handle adopts a recovery ratchet handle.
Further, the ramp component is further provided with an electronic lock, and after receiving an unlocking signal, the electronic lock is automatically unlocked, and the ramp is unfolded.
Further, the bottom of the movable pedal is provided with a protective rubber strip, and the movable pedal is contacted with the ground after being unfolded in place, so that the movable pedal is protected from being damaged.
An emergency evacuation door comprises the emergency evacuation door ramp with the movable pedal.
Compared with the prior art, the beneficial effects are that:
the movable pedal is arranged on the pedal at the last stage of the evacuation ramp, and the movable plate is arranged in the interference area of the movable pedal and the track when the evacuation ramp is unfolded, so that the contact tilting of the evacuation ramp and the track can be realized, the landing of the pedal main body is not influenced, meanwhile, the integrity of the pedal can be maintained when the special position needs to be suspended, the stepping-out of evacuation personnel is avoided, and the stability and the safety of the evacuation ramp are improved.
Drawings
FIG. 1 is a schematic view of an emergency exit ramp structure according to embodiment 1;
FIG. 2 is a schematic view of the structure of the movable pedal in the embodiment 1;
FIG. 3 is a schematic view of an evacuation door;
FIG. 4 is a schematic view of an emergency exit ramp structure according to embodiment 3;
FIG. 5 is a schematic view showing the structure of a movable pedal in embodiment 3;
FIG. 6 is a schematic view showing the structure of a movable pedal in embodiment 3;
fig. 7 is a schematic view of an evacuation door structure.
The device comprises a ramp 1, a ramp upright post 1-1, an electronic lock 1-2, a chain 1-3, a ramp recovery pull belt 1-4, a support rod 1-5, a buffer damping device 1-6, a connecting rod 1-7, a latch hook 1-8, a hanging rod 1-9, a pedal hinge 1-10, a pedal final stage pedal 1-11, a rubber strip 1-12, a pedal final stage pedal bottom beam 1-13, a turnover pedal 2, a hinge 2-1, a movable pedal bottom beam 2-2, a door leaf 3-1, a door leaf recovery pull belt 3-2, an air spring 3-3, a sealing frame 3-4, a door opening mechanism 3-5, a telescopic pedal 4-1 track 4-2, an air spring 4-3 and a locking indexing pin 4-3.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear) are involved in the embodiment of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed. If there is a description of "first", "second", etc. in an embodiment of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
1-2, an emergency evacuation door ramp with movable pedals comprises a ramp upright post 1-1, a ramp assembly 1 and a ramp recovery pull belt 1-4, wherein the ramp upright post 1-1 is fixed on two sides of the emergency evacuation door, the bottom of the ramp upright post 1-1 is hinged with the ramp assembly 1, and a buffer damping mechanism 1-6 is further arranged between the ramp assembly 1 and the ramp upright post 1-1. The top of the ramp upright post 1-1 is provided with a recovery ratchet handle, and the recovery ratchet handle is connected with the ramp component 1 through a ramp recovery pull belt 1-4.
The ramp component 1 comprises multistage pedals and connecting rods 1-7, the multistage pedals are connected through hinges, the connecting rods 1-7 are arranged on the side faces of the multistage pedals and are connected, and the connecting rods 1-7 can drive the multistage pedals to fold and unfold in an M shape. The connecting part of the ramp recycling pull belt 1-4 and the multi-stage pedal is provided with a lock hook 1-8 device, and the lock hook 1-8 device comprises a lock hook 1-8 arranged on the side surface of the multi-stage pedal and a hanging rod 1-9 arranged on the connecting rod 1-7. After the evacuation ramp is unfolded, the lock hook 1-8 is hung into the hanging rod 1-9 to complete locking, so that the four sides formed by the connecting rod 1-7 and the pedal are formed into a stable triangle structure, the evacuation emergency ramp is stabilized, and the ramp is prevented from tilting. When the evacuation ramp is folded, the ramp recycling pull belt 1-4 pulls the lock hook 1-8 to unlock, and the quadrangle formed by the connecting rod 1-7 and the pedal starts to be folded and folded.
The tail end of the multistage pedal is provided with a turnover pedal 2. The turnover pedal 2 is arranged on the final pedal 1-11 by a hinge 2-1, the turnover pedal 2 can rotate above the pedal surface around the hinge 2-1, the movable pedal bottom beam 2-2 is propped against the final pedal bottom beam 1-13 to prevent the turnover pedal 2 from rotating below the pedal surface, and when the evacuation ramp is recovered, the turnover pedal 2 can be folded together with the final pedal 1-11.
Armrests are arranged on two sides of the multistage pedal, the bottoms of the supporting rods 1-5 of the armrests are hinged with the side faces of the multistage pedal, the tops of the supporting rods 1-5 are provided with handrail chains 1-3 which are connected with each other, and the armrests can be folded and unfolded along with the pedal. The bottom of the turnover pedal 2 is provided with protective rubber strips 1-12 which are contacted with the ground after the movable pedal 2 is unfolded in place, so that the pedal is protected from being damaged.
Example 2
The emergency evacuation door ramp with the movable pedals comprises ramp upright posts 1-1, ramp components and ramp recovery pull belts 1-4, wherein the ramp upright posts 1-1 are fixed on two sides of the emergency evacuation door, the ramp components are hinged to the bottoms of the ramp upright posts 1-1, and a buffer damping mechanism 1-6 is further arranged between the ramp components and the ramp upright posts 1-1. The top of the ramp upright post 1-1 is provided with a recovery ratchet handle, and the recovery ratchet handle is connected with the ramp component through a ramp recovery pull belt 1-4.
The ramp component 1 comprises multistage pedals and connecting rods 1-7, the multistage pedals are connected through hinges, the connecting rods 1-7 are arranged on the side faces of the multistage pedals and are connected, and the connecting rods 1-7 can drive the multistage pedals to fold and unfold in an M shape. Armrests are arranged on two sides of the multistage pedal, the bottoms of the supporting rods 1-5 of the armrests are hinged with the side faces of the multistage pedal, the tops of the supporting rods 1-5 are provided with handrail chains 1-3 which are connected with each other, and the armrests can be folded and unfolded along with the pedal.
The area that the last-stage pedal 1-11 of multistage footboard and track or spike take place to interfere is the dead zone, and last-stage pedal 1-11 is equipped with telescopic movable footboard in this dead zone, telescopic movable footboard includes telescopic footboard 4, track 4-1 and extensible member, last-stage pedal 1-11 back is fixed with track 4-1, is equipped with the slider on the telescopic footboard 4 and cooperates the cover that realizes stretching out to the dead zone of telescopic footboard 4 with track 4-1, is equipped with the slip of air spring 4-2 control telescopic footboard 4 between telescopic footboard 4 and the last-stage pedal 1-11. The bottom of the telescopic pedal 4 is provided with a protective rubber strip 1-12 which is contacted with the ground after the telescopic pedal 4 is unfolded in place, so that the pedal is protected from being damaged.
When the evacuation ramp is opened, the multistage pedals are unfolded, the final-stage pedals 1-11 start to fall to touch the ground, the telescopic pedals 4 extend to cover the empty areas of the final-stage pedals 1-11, and when the evacuation ramp does not interfere with a track or a spike, the telescopic pedals 4 extend completely to be flush with the final-stage pedals 1-11 to touch the ground. When the escape ramp interferes with the track or the spike, the telescopic pedal 4 stretches out to contact with the track or the spike and then stops, and the final pedal 1-11 continues to drop down.
Example 3
As shown in fig. 4-6, an emergency evacuation door ramp with a movable pedal 2 comprises a ramp upright post 1-1, a ramp assembly 1 and a ramp recovery pull belt 1-4, wherein the ramp upright post 1-1 is fixed at two sides of the emergency evacuation door, the bottom of the ramp upright post 1-1 is hinged with the ramp assembly 1, and a buffer damping mechanism 1-6 is further arranged between the ramp assembly 1 and the ramp upright post 1-1. The top of the ramp upright post 1-1 is provided with a recovery ratchet handle, and the recovery ratchet handle is connected with the ramp component 1 through a ramp recovery pull belt 1-4.
The ramp component 1 comprises multistage pedals and connecting rods 1-7, the multistage pedals are connected through hinges, the connecting rods 1-7 are arranged on the side faces of the multistage pedals and are connected, and the connecting rods 1-7 can drive the multistage pedals to fold and unfold in an M shape. The connecting part of the ramp recycling pull belt 1-4 and the multi-stage pedal is provided with a lock hook 1-8 device, and the lock hook 1-8 device comprises a lock hook 1-8 arranged on the side surface of the multi-stage pedal and a hanging rod 1-9 arranged on the connecting rod 1-7. After the evacuation ramp is unfolded, the lock hook 1-8 is hung into the hanging rod 1-9 to complete locking, so that the four sides formed by the connecting rod 1-7 and the pedal are formed into a stable triangle structure, the evacuation emergency ramp is stabilized, and the ramp is prevented from tilting. When the evacuation ramp is folded, the ramp recycling pull belt 1-4 pulls the lock hook 1-8 to unlock, and the quadrangle formed by the connecting rod 1-7 and the pedal starts to be folded and folded.
The area that the last-stage pedal 1-11 of multistage footboard and track or spike take place to interfere is the dead zone, and last-stage pedal 1-11 is equipped with telescopic movable footboard in this dead zone, telescopic movable footboard includes telescopic footboard 4, track 4-1 and extensible member, last-stage pedal 1-11 back is fixed with track 4-1, is equipped with the slider on the telescopic footboard 4 and cooperates the cover that realizes stretching out to the dead zone of telescopic footboard 4 with track 4-1, is equipped with the slip of air spring 4-2 control telescopic footboard 4 between telescopic footboard 4 and the last-stage pedal 1-11. The side surface of the final-stage pedal 1-11 is provided with a locking indexing pin 4-3 for fixing the contraction position of the telescopic pedal 4, and a handle of the locking indexing pin 4-3 is connected with a connecting rod 1-7. The tail ends of the final-stage pedals 1-11 are provided with limiting plates for limiting the extension length of the telescopic pedal 4 so that the maximum extension length of the telescopic pedal is kept level with the final-stage pedals 1-11. The bottom of the telescopic pedal 4 is provided with a protective rubber strip 1-12 which is contacted with the ground after the telescopic pedal is unfolded in place, so that the pedal is protected from being damaged.
When the evacuation ramp is opened, the multistage pedals are unfolded, the final-stage pedals 1-11 start to fall to touch the ground, the connecting rod 1-7 drives the handle of the locking indexing pin 4-3 to rotate anticlockwise, the telescopic pedals 4 are unlocked, extend out under the pushing of the air springs 4-2 to cover the empty areas of the final-stage pedals 1-11, and when the evacuation ramp does not interfere with a track or a spike, the telescopic pedals 4 extend out completely to be in flush contact with the final-stage pedals 1-11. When the escape ramp interferes with the track or the spike, the telescopic pedal 4 stretches out to contact with the track or the spike and then stops, and the final pedal 1-11 continues to drop down.
Example 4
As shown in fig. 3 or 7, an emergency evacuation door ramp includes an emergency evacuation door leaf assembly 3-1 and any one of the emergency evacuation door ramps described in embodiments 1-3.
The utility model is illustrated by way of example and not by way of limitation in the embodiments of the utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The emergency evacuation door ramp with the movable pedals is characterized by comprising ramp upright posts, ramp components, ramp recovery pull belts and connecting rods, wherein the ramp upright posts are fixed on two sides of the ramp components, the ramp components are hinged to the bottoms of the ramp upright posts, recovery handles are arranged at the tops of the ramp upright posts, the recovery handles are connected with the ramp components through the ramp recovery pull belts, the ramp components are formed by hinging multi-stage pedals, and the side surfaces of the multi-stage pedals are provided with the connecting rods for connection; the movable pedal is arranged in the area where the tail pedal of the multistage pedal interferes with the track.
2. The emergency evacuation door ramp with the movable pedal according to claim 1, wherein the movable pedal is a telescopic movable pedal, the telescopic movable pedal comprises a telescopic pedal, a track and a telescopic piece, the telescopic pedal is arranged on the tail end pedal through the track, and a telescopic piece for controlling the telescopic pedal to slide is arranged between the telescopic pedal and the tail end pedal.
3. An emergency evacuation door ramp with a movable pedal according to claim 2, wherein the end pedal is provided with a limiting device for the extension of the telescopic pedal.
4. Emergency evacuation door ramp with movable pedals according to claim 2, characterized in that the end pedals are provided with locking means for keeping the telescopic pedals in a contracted state.
5. The emergency evacuation door ramp with the movable pedal according to claim 1, wherein the movable pedal is a turnover movable pedal, the turnover movable pedal comprises a turnover pedal, a hinge and a bottom beam, the turnover pedal is installed on one side of the last-stage pedal interfering with the track through the hinge, and the bottom of the last-stage pedal is provided with the bottom beam limiting the movable pedal.
6. The emergency evacuation door ramp with the movable pedals according to claim 1, wherein the emergency evacuation door ramp is further provided with handrails, and each handrail comprises support rods arranged on two sides of the multistage pedals and a handrail chain formed by connecting the support rods with the ramp upright posts and the ramp.
7. An emergency evacuation door ramp with a movable pedal according to claim 1, wherein a buffer damping device is arranged at the joint of the ramp upright post and the connecting rod.
8. The emergency evacuation door ramp with the movable pedal according to claim 1, wherein a hooking and locking device is arranged between the multi-stage pedal and the connecting rod, the hooking and locking device comprises a locking hook and a hanging rod matched with the locking hook, the locking hook is arranged on the side face of the multi-stage pedal, and the hanging rod is arranged on the connecting rod.
9. The emergency evacuation door ramp with the movable pedal according to claim 1, wherein a protective rubber strip is arranged at the bottom of the movable pedal.
10. An emergency evacuation door comprising an emergency evacuation door ramp with an active pedal according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321586899.0U CN220349686U (en) | 2023-06-20 | 2023-06-20 | Emergency evacuation door ramp with movable pedal and emergency evacuation door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321586899.0U CN220349686U (en) | 2023-06-20 | 2023-06-20 | Emergency evacuation door ramp with movable pedal and emergency evacuation door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220349686U true CN220349686U (en) | 2024-01-16 |
Family
ID=89506157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321586899.0U Active CN220349686U (en) | 2023-06-20 | 2023-06-20 | Emergency evacuation door ramp with movable pedal and emergency evacuation door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220349686U (en) |
-
2023
- 2023-06-20 CN CN202321586899.0U patent/CN220349686U/en active Active
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