An elevator door anti-pinch mechanism
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-08-14
AI Technical Summary
[0003]但是，现有的部分电梯门并不具备良好的缓冲防夹机构，从而不仅降低了电梯门在运行时的安全性，而且也可能会对电梯门造成损坏，降低其使用寿命
1.通过前橡胶垫 和后橡胶垫以及其内部的压力传感器即可实现防夹效果，在电梯门关闭过程中，如果没有有效的防夹机构，乘客可能会因为疏忽、行动不便（比如老人、儿童、残疾人等行动相对迟缓的人群）或者一时的注意力分散（如正在接听电话、照看物品等），未能及时进出电梯，导致身体被快速关闭的电梯门夹住。而防夹机构能够在检测到有物体（包括人体）处于即将被夹的危险状态时，迅速停止关门动作并反向开门，从而避免乘客的手脚、身体等部位被夹伤，防止出现骨折、软组织挫伤等各类身体损伤情况，切实保护每一位乘坐电梯人员的生命健康安全，而且当电梯门在关闭时夹到硬物（比如乘客携带的大件行李、工具等物品），如果没有防夹机制，会产生较大的冲击力，使门板受到撞击变形，影响其正常的开合功能和密封性能，影响整个电梯门系统的稳定性和可靠性。而防夹机构能避免这种不合理的强力撞击，使门板等部件在正常的受力范围内工作，延长它们的使用寿命，减少维修和更换成本，保障电梯门长期稳定运行，并且电梯门的关闭动作是由门机驱动系统通过传动部件带动左轿厢门和右轿厢门以及左层门板和右层门板完成的，突然的夹物情况产生的异常阻力可能会传递到传动系统中，例如导致传动链条、皮带、齿轮等部件受力过大，出现磨损加剧、跳齿、断裂等问题。防夹机构通过及时响应并阻止这种异常受力情况的发生，有助于维持传动系统的正常运行，避免因局部部件损坏而引发整个电梯门驱动系统的故障，提高电梯整体的运行效率和安全性。
Smart Images
Figure CN224633040U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of elevator door anti-pinch mechanism, specifically an elevator door anti-pinch mechanism. Background Technology
[0002] Elevator doors are a key component of elevators, mainly composed of car doors and landing doors. They play a vital role in separating the car from the lobby and ensuring passenger safety. The main types include: Automatic swing doors: These use an automatic sensor mechanism, causing the door panels to automatically open to both sides. They have a simple and elegant appearance, are easy to operate, and are suitable for various occasions, especially for places with high traffic. Automatic sliding doors: These doors automatically push and pull on the track, driven by an electric device. The operation is smooth, the structure is simple, and maintenance is convenient. They are widely used in high-end office buildings, shopping malls, and other places. Automatic roller shutter doors: These use a metal roller shutter design, automatically rolling up and retracting to the top when opened, saving space. They are suitable for small elevator cars, allowing for quick opening and convenient entry and exit for people and vehicles.
[0003] However, some existing elevator doors do not have a good buffer and anti-pinch mechanism, which not only reduces the safety of the elevator door during operation, but may also damage the elevator door and reduce its service life.
[0004] Therefore, those skilled in the art have provided an elevator door anti-pinch mechanism to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to provide an elevator door anti-pinch mechanism to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: An elevator door anti-pinch mechanism includes a left landing door panel and a right landing door panel; a right landing door panel is provided on the right side of the left landing door panel; a front connecting frame is slidably connected to the left and right landing door panels; a front rubber pad is fixedly connected to one side of the front connecting frame; several front limiting slide grooves are cut on the front and rear sides of the front connecting frame; several front buffer springs are fixedly connected to the other side of the front connecting frame; an inner filling pad is provided on the rear side of the left and right landing door panels; a left car door is provided on the rear side of the inner filling pad; a right car door is provided on the right side of the left car door; a rear connecting frame is slidably connected to the left and right car doors; a rear rubber pad is fixedly connected to one side of the rear connecting frame; several rear limiting slide grooves are cut on the front and rear sides of the rear connecting frame; several rear buffer springs are fixedly connected to the other side of the rear connecting frame; several pressure sensors are fixedly connected inside the front and rear rubber pads.
[0007] As a further embodiment of this utility model, an outer door frame is provided on the outer side of the left and right door panels, and a wall is provided on the outer side of the outer door frame.
[0008] As a further embodiment of this utility model, a call panel is fixedly connected to the front side of the wall.
[0009] As a further embodiment of this utility model, a plurality of call buttons are provided on the lower side of the outer surface of the call panel.
[0010] As a further embodiment of this utility model, a display screen is provided on the upper side of the outer surface of the call panel.
[0011] As a further embodiment of this utility model, a car is provided on the rear side of the left car door and the right car door.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The anti-pinch effect is achieved through the front and rear rubber pads and the pressure sensor inside them. Without an effective anti-pinch mechanism, passengers may be caught in the rapidly closing elevator doors due to negligence, mobility issues (such as the elderly, children, or disabled individuals), or momentary distraction (such as answering a phone call or looking after belongings). The anti-pinch mechanism, upon detecting an object (including a human body) in a dangerous state, quickly stops the closing action and reverses the opening, preventing injuries to the passenger's hands, feet, or body, and avoiding fractures, soft tissue contusions, and other bodily harm. This effectively protects the life and health of every elevator passenger. Furthermore, when the elevator door catches a hard object (such as large luggage or tools carried by passengers) while closing, without an anti-pinch mechanism, a significant impact force can occur, deforming the door panel and affecting its normal opening and closing function and sealing performance, thus impacting the stability and reliability of the entire elevator door system. The anti-pinch mechanism prevents such unreasonable and forceful impacts, ensuring that components such as the door panels operate within their normal stress range. This extends their service life, reduces maintenance and replacement costs, and guarantees the long-term stable operation of the elevator doors. The closing action of the elevator doors is accomplished by the door operator drive system, which drives the left and right car doors, as well as the left and right landing doors, through transmission components. Sudden clamping situations can generate abnormal resistance that is transmitted to the transmission system, potentially causing excessive stress on components such as drive chains, belts, and gears, leading to accelerated wear, skipped teeth, or breakage. The anti-pinch mechanism responds promptly and prevents such abnormal stress, helping to maintain the normal operation of the transmission system. This prevents damage to local components from causing a malfunction in the entire elevator door drive system, improving the overall operating efficiency and safety of the elevator. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of an elevator door anti-pinch mechanism.
[0014] Figure 2 This is a schematic diagram of the internal structure of an elevator door anti-pinch mechanism.
[0015] Figure 3 This is a schematic diagram of the internal structure of the left floor panel, right floor panel, left car door, and right car door in an elevator door anti-pinch mechanism.
[0016] Figure 4 This is a sectional view of the left landing door panel, right landing door panel, left car door, and right car door in an elevator door anti-pinch mechanism.
[0017] In the diagram: 1-Left floor door panel, 2-Right floor door panel, 3-Front connecting frame, 4-Front rubber pad, 5-Front limit slide groove, 6-Front buffer spring, 7-Inner filling pad, 8-Left car door, 9-Right car door, 10-Rear connecting frame, 11-Rear rubber pad, 12-Rear limit slide groove, 13-Rear buffer spring, 14-Outer door frame, 15-Wall, 16-Call panel, 17-Call button, 18-Display screen, 19-Car, 20-Pressure sensor. Detailed Implementation
[0018] Please see Figures 1-4 In this embodiment of the utility model, an elevator door anti-pinch mechanism includes a left floor door panel 1 and a right floor door panel 2; the right floor door panel 2 is provided on the right side of the left floor door panel 1, and a front connecting frame 3 is slidably connected inside the left floor door panel 1 and the right floor door panel 2. A front rubber pad 4 is fixedly connected to one side of the front connecting frame 3, and several front limiting sliding grooves 5 are slotted on the front and rear sides of the front connecting frame 3. Several front buffer springs 6 are fixedly connected to the other side of the front connecting frame 3; an inner filling pad 7 is provided on the rear side of the left floor door panel 1 and the right floor door panel 2, and a left car door 8 is provided on the rear side of the inner filling pad 7. A right car door 9 is provided on the right side of the left car door 8; a rear connecting frame 10 is slidably connected inside the left car door 8 and the right car door 9. A rear rubber pad 11 is fixedly connected to one side of the frame 10. Several rear limiting slide grooves 12 are cut on the front and rear sides of the rear connecting frame 10. Several rear buffer springs 13 are fixedly connected to the other side of the rear connecting frame 10. Several pressure sensors 20 are fixedly connected inside the front rubber pad 4 and the rear rubber pad 11. An outer door frame 14 is provided on the outer side of the left floor door panel 1 and the right floor door panel 2. A wall 15 is provided on the outer side of the outer door frame 14. A call panel 16 is fixedly connected to the front side of the wall 15. Several call buttons 17 are provided on the lower side of the outer surface of the call panel 16. A display screen 18 is provided on the upper side of the outer surface of the call panel 16. A car 19 is provided on the rear side of the left car door 8 and the right car door 9.
[0019] The working principle of this utility model is as follows: During the closing process, the left car door 8 and the right car door 9 gradually move closer to the center, and the rear rubber pad 11 between them also slowly approaches a closed state. Simultaneously, the left landing door panel 1 and the right landing door panel 2 also move towards the center, and the front rubber pad 4 between them also gradually moves closer. The design purpose of the front rubber pad 4 and the rear rubber pad 11 is to buffer the impact when the left car door 8 and the right car door 9, and the left landing door panel 1 and the right landing door panel 2 are about to contact each other, avoiding a large impact force from a rigid collision, and also to a certain extent sensing whether an object is trapped. As the closing action continues, the front rubber pad 4 and the rear rubber pad 11 are gradually compressed. Under normal circumstances, if there is no obstacle trapped between the left car door 8 and the right car door 9, and the left landing door panel 1 and the right landing door panel 2, the front rubber pad 4 and the rear rubber pad 11 will be smoothly compressed according to the designed compression degree. At this time, the pressure is within the normal range, and its elastic deformation can buffer the impact force during closing, making the closing action smoother. However, if an object (such as a passenger's body or belongings) gets caught between the left car door 8 and the right car door 9 (located at the rear rubber pad 11) or between the left landing door panel 1 and the right landing door panel 2 (located at the front rubber pad 4) during the closing process, the pressure on the front rubber pad 4 or the rear rubber pad 11 will exceed the normal range. Its deformation will suddenly increase, and the pressure will rise sharply. This means that a person or object may be trapped. When the front rubber pad 4 or the rear rubber pad 11 experiences abnormally high pressure and large deformation due to being trapped by an object, its built-in pressure sensor 20 will detect the pressure change and transmit a signal to the external elevator control system, informing the control system that an abnormal compression situation has occurred and there may be a risk of people or objects being trapped. The elevator control system receives this signal. Upon receiving an abnormal signal from the pressure sensor 20, the system will immediately issue a stop-closing command to the door operator drive system. The door operator drive system will stop driving the left car door 8 and right car door 9, as well as the left landing door panel 1 and right landing door panel 2, to continue closing towards the center. Instead, it will quickly switch to the opening drive mode, causing the left car door 8 and right car door 9 to slide open to both sides. The connected left landing door panel 1 and right landing door panel 2 will also move to both sides simultaneously, achieving reverse opening to avoid further squeezing of trapped objects and ensure the safety of personnel and goods. If the squeezing of the front rubber pad 4 and rear rubber pad 11 remains within the normal design range during the closing process, indicating that there is no trapped person or object, then the left car door 8 and right car door 9, as well as the left landing door panel 1 and right landing door panel 2, will continue to move smoothly towards the center.The left car door 8 and the right car door 9 are finally fully closed, and the rear rubber pad 11 between them is moderately compressed, which plays a sealing and final buffering role; the left landing door panel 1 and the right landing door panel 2 are also tightly fitted, and the front rubber pad 4 between them is also reasonably compressed. At this time, the anti-pinch work is completed. The anti-pinch effect can be achieved by the front rubber pad 4, the rear rubber pad 11 and the pressure sensor 20 inside them. During the closing process of the elevator door, if there is no effective anti-pinch mechanism, passengers may fail to enter or exit the elevator in time due to negligence, mobility difficulties (such as the elderly, children, disabled people and other people with relatively slow movement) or momentary distraction (such as answering the phone, looking after items, etc.), resulting in their bodies being trapped by the rapidly closing elevator door. The anti-pinch mechanism can quickly stop the closing action and open the door in the opposite direction when it detects an object (including a human body) in a dangerous state that is about to be pinched. This prevents passengers' hands, feet, and other body parts from being pinched, and prevents various physical injuries such as fractures and soft tissue contusions. It effectively protects the life, health and safety of every person riding the elevator. Moreover, when the elevator door pinches a hard object (such as large luggage or tools carried by passengers) when closing, without an anti-pinch mechanism, it will generate a large impact force, causing the door panel to be deformed by the impact, affecting its normal opening and closing function and sealing performance, and affecting the stability and reliability of the entire elevator door system. The anti-pinch mechanism prevents such unreasonable and forceful impacts, ensuring that components such as the door panels operate within their normal stress range, extending their service life, reducing maintenance and replacement costs, and guaranteeing the long-term stable operation of the elevator doors. The closing action of the elevator doors is accomplished by the door operator drive system, which drives the left car door 8 and right car door 9, as well as the left landing door panel 1 and right landing door panel 2 via transmission components. Sudden clamping situations can generate abnormal resistance that may be transmitted to the transmission system, causing excessive stress on components such as drive chains, belts, and gears, leading to accelerated wear, skipped teeth, and breakage. The anti-pinch mechanism, by responding promptly and preventing such abnormal stress situations, helps maintain the normal operation of the transmission system, avoiding malfunctions in the entire elevator door drive system due to damage to local components, and improving the overall operating efficiency and safety of the elevator.
[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.
[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An elevator door anti-pinch mechanism, comprising a left landing door panel (1), a right landing door panel (2), a left car door (8), and a right car door (9), characterized in that, A right door panel (2) is provided on the right side of the left door panel (1). A front connecting frame (3) is slidably connected inside the left door panel (1) and the right door panel (2). A front rubber pad (4) is fixedly connected to one side of the front connecting frame (3). Several front limiting slide grooves (5) are cut on the front and rear sides of the front connecting frame (3). Several front buffer springs (6) are fixedly connected to the other side of the front connecting frame (3). An inner filling pad (7) is provided on the rear side of the left door panel (1) and the right door panel (2). A left car door (8) is provided on the rear side of the inner filling pad (7). The left car door (8) is provided with a right car door (9) on the right side; the left car door (8) and the right car door (9) are slidably connected to a rear connecting frame (10), a rear rubber pad (11) is fixedly connected to one side of the rear connecting frame (10), a number of rear limiting slide grooves (12) are opened on the front and rear sides of the rear connecting frame (10), and a number of rear buffer springs (13) are fixedly connected to the other side of the rear connecting frame (10); a number of pressure sensors (20) are fixedly connected inside the front rubber pad (4) and the rear rubber pad (11).
2. The elevator door anti-pinch mechanism according to claim 1, characterized in that, The left door panel (1) and the right door panel (2) are provided with an outer door frame (14), and a wall (15) is provided on the outside of the outer door frame (14).
3. The elevator door anti-pinch mechanism according to claim 2, characterized in that, A call panel (16) is fixedly connected to the front side of the wall (15).
4. The elevator door anti-pinch mechanism according to claim 3, characterized in that, The lower side of the outer surface of the call panel (16) is provided with several call buttons (17).
5. The elevator door anti-pinch mechanism according to claim 3, characterized in that, The outer surface of the call panel (16) is provided with a display screen (18).
6. The elevator door anti-pinch mechanism according to claim 1, characterized in that, A car (19) is located on the rear side of the left car door (8) and the right car door (9).