Emergency rescue calling device for elevator car

By introducing a linkage mechanism of locking column, locking block and rotating rod in the emergency rescue call device of the elevator car, the problem of accidental door opening caused by accidental contact is solved, and the reliability and safety of emergency calls are improved.

CN224185647UActive Publication Date: 2026-05-01SHANGHAI JIANKE ELEVATOR TESTING TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI JIANKE ELEVATOR TESTING TECHNOLOGY CO LTD
Filing Date
2025-05-30
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

The existing emergency call device in elevator cars is prone to accidental contact when passengers are crowded, causing the fixing column to detach from the fixing hole and the door panel to be opened unexpectedly, which affects the reliability of the emergency call.

Method used

A locking assembly consisting of a locking pin, a locking block, a pressing block, and a second spring was designed. Through sliding engagement and a rotating rod linkage mechanism, a multi-locking structure is formed to prevent the door panel from being accidentally opened when touched.

Benefits of technology

It effectively prevents the door from opening accidentally due to accidental contact, improving the safety of elevator use in emergency situations and the reliability of the call device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an emergency rescue calling device for an elevator car. The elevator car emergency rescue calling device comprises a device body, a door plate is arranged on the front portion of the device body, a moving assembly is arranged at one end of the door plate, the inner wall of the moving assembly is fixedly connected to the outer wall of the top of a locking column, the bottom of the locking column is slidably connected to the inner wall of a locking block, and the inner wall of the locking column is slidably connected to the outer wall of a pressing block. The bottom of the pressing block is fixedly connected to the top of the second spring, the bottom of the outer wall of the locking column is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is rotatably connected to the inner wall of a rotating rod, and one end of the bottom of the rotating rod is fixedly connected to the outer wall of the bottom of the pressing block. According to the elevator car emergency rescue calling device, the bottom of the locking column slides to the outer portion of the locking block, the pressing block is pressed downwards, the second spring is compressed, the rotating rod is driven to be unfolded outwards at the same time, the top of the rotating rod abuts against one side of the locking block, locking is achieved, and the elevator car emergency rescue calling device is convenient to use. And the situation that the door plate is opened after the moving assembly is accidentally touched is effectively prevented.
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Description

Technical Field

[0001] This utility model relates to the field of emergency call devices, and in particular to an emergency rescue call device for elevator cars. Background Technology

[0002] With the acceleration of urbanization, high-rise buildings have become the core carriers of urban infrastructure. As a key piece of equipment in vertical transportation, the safe operation and efficient emergency response of elevators are directly related to the safety of passengers' lives and property.

[0003] An elevator car emergency rescue call device disclosed in utility model patent application CN218145208U includes a device body. A hollow groove is formed at the bottom of the front of the device body, and a button is installed inside the hollow groove. A movable mechanism is provided on one side of the hollow groove. A working groove is formed at the top of the device body, and a caller is fixedly installed at the bottom of the working groove. The movable mechanism includes a movable groove located on the side of the hollow groove away from the door panel. A hollow block is provided at one end of the movable groove, and one end of the hollow block is fixedly connected to one side of the hollow groove. First slide rails are formed at the top and bottom of the movable groove. A first movable block is provided inside the movable groove, and the top and bottom of the first movable block are slidably connected to the first slide rail. One side of one end of the first movable block is fixedly connected to one end of a moving column, and the other end of the moving column passes through the hollow block and is fixedly connected to a blocking block.

[0004] Although the above-mentioned device locks the door panel by inserting the fixing column into the fixing hole, there are often many passengers in the elevator car, which may cause accidental collisions. This may cause the fixing column to disengage from the fixing hole, and the door panel to be opened under the action of the first moving block and the spring.

[0005] Therefore, it is necessary to provide a new elevator car emergency rescue call device to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides an emergency rescue call device for elevator cars.

[0007] The elevator car emergency rescue call device provided by this utility model includes a device body. A hollow groove is formed at the bottom of the front part of the device body. A door panel is provided on one side of the hollow groove. A moving component is provided at one end of the door panel. A locking component is provided on the right side of the moving component. The locking component includes a locking block, a locking post, a pressing block, a second spring, a rotating rod, and a rotating shaft. The bottom side of the device body is fixedly connected to the bottom of the locking block. The inner wall of the moving component is fixedly connected to the top outer wall of the locking post. The bottom of the locking post is slidably connected to the inner wall of the locking block. The inner wall of the locking post is slidably connected to the outer wall of the pressing block. The bottom of the pressing block is fixedly connected to the top of the second spring. The bottom of the second spring is fixedly connected to the bottom of the inner wall of the locking post. Multiple fixing grooves are equidistantly formed around the bottom circumference of the outer wall of the locking post. The two sides of the fixing grooves are fixedly connected to the two ends of the rotating shaft. The outer wall of the rotating shaft is rotatably connected to the inner wall of the rotating rod. One bottom end of the rotating rod is fixedly connected to the bottom outer wall of the pressing block.

[0008] Preferably, a button and an LED light are installed inside the hollow slot. The button is located inside the LED light. A movable mechanism is provided on one side of the hollow slot. Rotating slots are formed at the top and bottom of the other side of the hollow slot. The bottom of the rotating slot is rotatably connected to one end of a rotating column. A door panel is provided on the side of the hollow slot near the rotating slot. A visualization window is provided in the middle of the door panel. The visualization window is located in front of the button and the LED light. The top and bottom of one end of the door panel are fixedly connected to the rotating column. A working slot is formed at the top of the device body. A pager is fixedly installed at the bottom of the working slot.

[0009] Preferably, the movable mechanism includes a movable groove, which is located on the side of the hollow groove away from the door panel. A hollow block is provided at one end of the movable groove, and one end of the hollow block is fixedly connected to one side of the hollow groove. A first slide rail is provided at the top and bottom of the movable groove. A first movable block is provided inside the movable groove, and the top and bottom of the first movable block are slidably connected to the first slide rail. One side of one end of the first movable block is fixedly connected to one end of a moving column, and the other end of the moving column passes through the hollow block and is fixedly connected to a blocking block. A first spring is sleeved on the outside of the moving column, and both ends of the first spring are fixedly connected to the hollow block and the first movable block. Two sets of blocking columns are provided above and below the movable groove, and the rear parts of the two sets of blocking columns are fixedly connected to one side of the hollow groove. Fixing holes are symmetrically provided about the movable groove on the side of the hollow groove closest to the movable groove.

[0010] Preferably, a movable component is provided at the end of the door panel away from the rotating column. The movable component includes a sliding groove, which is opened on the front side of one end of the door panel. Two sets of circular holes are provided at one end of the door panel, and the bottom ends of the circular holes penetrate the sliding groove. Second slide rails are provided at the top and bottom of the sliding groove. A second movable block is slidably connected inside the second slide rail. A force-bearing plate is provided inside the sliding groove, and one end of the force-bearing plate is fixedly connected to the second movable block. The top outer wall of the locking column is fixedly connected to the inner wall of the force-bearing plate. The top and bottom ends of the second movable block near the circular hole are fixedly connected to one end of the fixed column. The fixed column is adapted to the circular hole and the fixed hole, and the fixed column and the circular hole are at the same level.

[0011] Preferably, an installation mechanism is provided at the top of the working groove. The installation mechanism includes connecting columns. Two sets of connecting columns are provided, and the two sets of connecting columns are respectively fixedly connected to both sides of the top of the working groove. A threaded groove is opened at the top of the connecting column. A protective cover is installed at the top of the connecting column. Positioning columns are fixedly connected to both sides of the bottom of the protective cover. Threaded holes are opened on both sides of the protective cover. The threaded holes and the threaded groove are connected by nuts.

[0012] Preferably, mounting rails are provided on both sides of the front of the working slot, and the interior of the mounting rails is slidably connected to the communication board, and the front of the communication board is provided with a communication hole.

[0013] Compared with related technologies, the elevator car emergency rescue call device provided by this utility model has the following beneficial effects: the bottom of the locking column slides to the outside of the locking block, and the pressing block is pressed down, compressing the second spring and driving the rotating rod to unfold outward, so that the top of the rotating rod abuts against one side of the locking block to lock, effectively preventing the door panel from being opened by accidental contact with the moving component. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the elevator car emergency rescue call device provided by this utility model;

[0015] Figure 2 for Figure 1 The diagram shows a three-dimensional structure with the top disassembly shown.

[0016] Figure 3 for Figure 1 The diagram shows the structure of the moving component.

[0017] Figure 4 for Figure 1 The diagram shows the three-dimensional structure at the bottom.

[0018] Figure 5 for Figure 1The diagram shows the structure of the pop-up component.

[0019] Figure 6 for Figure 1 The diagram shows the structure of the locking component.

[0020] The diagram is labeled as follows: 1. Device body; 2. Intercom panel; 3. Intercom hole; 4. Mounting rail; 5. Positioning post; 6. Protective cover; 7. Nut; 8. Threaded hole; 9. Connecting post; 10. Threaded groove; 11. Pager; 12. Door panel; 13. Rotating post; 14. Visual window; 15. Sliding groove; 16. Force plate; 17. Second movable block; 18. Second slide rail; 19. Fixed post; 20. Button; 21. LED light; 22. Fixed hole; 23. Locking block; 24. First movable block; 25. Spring No. 1; 26. Moving post; 27. Hollow block; 28. Blocking block; 29. ​​Locking post; 30. Pressing block; 31. Spring No. 2; 32. Rotating rod; 33. Rotating shaft. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 ,in, Figure 1 A schematic diagram of a preferred embodiment of the elevator car emergency rescue call device provided by this utility model; Figure 2 for Figure 1 The diagram shows a three-dimensional structure with the top disassembly shown. Figure 3 for Figure 1 The diagram shows the structure of the moving component. Figure 4 for Figure 1 The diagram shows the three-dimensional structure at the bottom. Figure 5 for Figure 1 The diagram shows the structure of the pop-up component. Figure 6 for Figure 1 The diagram shows the structure of the locking component.

[0023] In the specific implementation process, such as Figure 1-5As shown, this utility model provides an elevator car emergency rescue call device, including a device body 1. A hollow groove is formed at the bottom of the front part of the device body 1, and a button 20 and an LED light 21 are installed inside the hollow groove. The button 20 is located inside the LED light 21. A movable mechanism is provided on one side of the hollow groove, and a rotating groove is formed at the top and bottom of the other side of the hollow groove. The bottom of the rotating groove is rotatably connected to one end of a rotating column 13. A door panel 12 is provided on the side of the hollow groove near the rotating groove. A viewing window 14 is provided in the middle of the door panel 12, located in front of the button 20 and the LED light 21. The top and bottom of one end of the door panel 12 are fixedly connected to the rotating column 13. A working groove is formed at the top of the device body 1, and a working groove is fixedly installed at the bottom. Equipped with a pager 11, the movable mechanism includes a movable groove located on the side of the hollow groove away from the door panel 12. A hollow block 27 is provided at one end of the movable groove, and one end of the hollow block 27 is fixedly connected to one side of the hollow groove. First slide rails are provided at the top and bottom of the movable groove. A first movable block 24 is provided inside the movable groove, and its top and bottom ends are slidably connected to the first slide rails. One side of one end of the first movable block 24 is fixedly connected to one end of a moving column 26, and the other end of the moving column 26 passes through the hollow block 27 and is fixedly connected to a blocking block 28. A first spring 25 is sleeved on the outside of the moving column 26, and both ends of the first spring 25 are fixedly connected to the hollow block 27 and the first movable block 24. Two sets of blocking columns are provided above and below the movable groove. Furthermore, the rear of the two sets of blocking posts are fixedly connected to one side of the hollow groove. The hollow groove, near the movable groove, has symmetrically arranged fixing holes 22 about the movable groove. A moving component is provided at the end of the door panel 12 away from the rotating post 13. The moving component includes a sliding groove 15, which is located on the front side of one end of the door panel 12. Two sets of round holes are provided at one end of the door panel 12, with the bottom ends of the round holes penetrating the sliding groove 15. Second slide rails 18 are provided at the top and bottom of the sliding groove 15. A second movable block 17 is slidably connected inside the second slide rail 18. A force-bearing plate 16 is provided inside the sliding groove 15, with one end of the force-bearing plate 16 fixedly connected to the second movable block 17. The inner wall of the force-bearing plate 16 is fixedly connected to the top of the locking component. The top and bottom ends of 17 near the round hole are fixedly connected to one end of the fixed column 19. The fixed column 19 is adapted to the round hole and the fixed hole 22. The fixed column 19 and the round hole are at the same level. An installation mechanism is set at the top of the working groove. The installation mechanism includes a connecting column 9. There are two sets of connecting columns 9. The two sets of connecting columns 9 are fixedly connected to the two sides of the top of the working groove. The top of the connecting column 9 is provided with a threaded groove 10. The top of the connecting column 9 is provided with a protective cover 6. The bottom of the protective cover 6 is fixedly connected to the two sides of the positioning column 5. The two sides of the protective cover 6 are provided with threaded holes 8. The threaded holes 8 and the threaded groove 10 are threadedly connected by nuts 7. The front two sides of the working groove are provided with mounting rails 4. The interior of the mounting rails 4 is slidably connected to the communication board 2. The front of the communication board 2 is provided with a communication hole 3.

[0024] It should be noted that the aforementioned elevator car emergency rescue call device body is an existing elevator car emergency rescue call device disclosed in CN218145208U. In this device, when an emergency rescue call device needs to be used in an emergency, the force plate 22 is pushed by hand to the end away from the round hole 19. At this time, the second movable block 21 and the fixed column 23 will also move in the same direction. When one end of the fixed column 23 is disengaged from the fixed hole 17, since the spring 15 was originally in a compressed state, the door panel 6 loses the fixed column 23 in the round hole 19. Due to the resistance within 9, the first movable block 12 will spring out towards the door panel 6 under the action of elastic force. Since the blocking block 14 and the hollow block 10 will collide and act as an obstacle, the moving column 13 will not detach from the hollow block 10. At this time, the first movable block 12 will exert an outward force on the door panel 6, causing the door panel 6 to spring open. Pressing the button 3 inside the hollow groove 2 will start the pager 8 to call for rescue personnel. The voice will be transmitted through the communication hole 32. After use, rotate the door panel 6 to contact the blocking column 16. At this time, the round hole 19 and the fixing hole 17 are at the same level, and the first The movable block 12 and the movable anchor move backward. At this time, the spring 15 is in a compressed state, moving the force plate 22 towards one end of the round hole 19 and moving one end of the fixed column 23 into the fixed hole 17, thus fixing the door panel 6. When the pager 8 inside the working slot 7 needs maintenance or malfunctions, the nut 29 can be rotated to remove it, and the protective cover 26 can be removed. At the same time, after the protective cover 26 is removed, the communication board 31 can be moved upward out of the mounting rail 30 for disassembly, for replacement or cleaning to prevent the communication hole 32 from being blocked by dust. When maintenance and replacement work is completed... When installing the protective cover 26, the positioning posts 27 on both sides of the bottom end of the protective cover 26 are brought into contact with the outer side of the connecting post 24. This indicates that the protective cover 26 is in the correct position and the threaded hole 28 and the threaded groove 25 are in a perpendicular state. At this time, the threaded hole 28 and the threaded groove 25 are threaded together by the nut 29 to complete the installation and fixation of the protective cover 26. The working principle and working method of the various mechanisms in this device are the same as those of the elevator car emergency rescue call device disclosed herein, which enables the device to effectively start working to call rescuers through the button pager, and the voice is transmitted through the communication hole.

[0025] In the specific implementation process, refer to Figure 6As shown, this utility model provides an emergency rescue call device for an elevator car. The locking assembly includes a locking block 23, a locking post 29, a pressing block 30, a second spring 31, a rotating rod 32, and a rotating shaft 33. The bottom side of the device body 1 is fixedly connected to the bottom of the locking block 23. The inner wall of the force plate 16 is fixedly connected to the top outer wall of the locking post 29. The bottom of the locking post 29 is slidably connected to the inner wall of the locking block 23. The inner wall of the locking post 29 is slidably connected to the outer wall of the pressing block 30. The bottom of the pressing block 30 is fixedly connected to the top of the second spring 31. The bottom of the second spring 31 is fixedly connected to the bottom of the inner wall of the locking post 29. Multiple fixing grooves are equidistantly opened on the bottom circumference of the outer wall of the locking post 29. The two sides of the fixing grooves are fixedly connected to the two ends of the rotating shaft 33. The outer wall of the rotating shaft 33 is rotatably connected to the inner wall of the rotating rod 32. One bottom end of the rotating rod 32 is fixedly connected to the bottom outer wall of the pressing block 30.

[0026] It should be noted that the locking block 23 is fixed to one side of the bottom of the device body 1, providing a space for the locking pin 29 to slide and serving as a positioning and support function; the locking pin 29 is slidably connected to the inner wall of the locking block 23, and the top is fixedly connected to the force plate 16, which is the main component that performs the locking action, and has multiple fixing slots to enhance the locking stability; the pressing block 30 is slidably connected to the inside of the locking pin 29, and the bottom is connected to the second spring 31, which is the part operated manually by the user to control the unlocking action; the second spring 31 connects the pressing block 30 and the bottom of the inner wall of the locking pin 29, providing a reset spring force so that the pressing block 30 automatically rebounds after being released; the rotating rod 32 is rotatably connected to both sides of the fixing slot through the rotating shaft 33, and one end is fixed to the bottom outer wall of the pressing block 30, serving as a linkage mechanism, rotating away from the fixing slot when pressed to achieve unlocking; the rotating shaft 33 is fixed on both sides of the fixing slot, supporting the rotating rod 32 to expand outward.

[0027] The working principle provided by this utility model is as follows: When the door panel 12 is pushed to the closed position, the force plate 16 moves towards the locking block 23 along with the moving component, pressing down the pressing block 30. The pressing block 30 compresses the second spring 31 and drives the rotating rod 32 connected to it. As the pressing block 30 moves down, the rotating rod 32 retracts around the rotating shaft 33 and gradually moves towards the inner wall of the fixing groove, so that the locking pin can pass through the inside of the locking block 23 and move outward. When it moves to the end, after the pressing block 30 is released, the second spring 31 returns to its original state, pushing the pressing block 30 back to the initial position. At the same time, the rotating rod also receives the thrust of the second spring 31 and returns to the initial position (expanding outward), forming a basic locking mechanism. Multiple fixing grooves enhance the stability of the locking block 23 locking the force plate 16; conversely, the locking block 23 can be released from the force plate 16, thereby opening the door panel 12.

[0028] This elevator car emergency rescue call device has the following advantages: It utilizes the sliding fit between the locking pin 29 and the locking block 23, as well as the linkage mechanism between multiple sets of fixing slots and the rotating rod 32, to form a multi-locking structure; multiple equidistantly distributed fixing slots ensure that the locking pin 29 can be effectively locked in different insertion positions, enhancing adaptability and stability; the rotating rod 32 rotates around the rotating shaft 33 and unfolds outward, automatically resetting under the action of the second spring 31, playing a crucial role in preventing loosening; it prevents the door panel 12 from accidentally opening due to vibration, impact, or accidental contact, improving safety in emergency situations; the user only needs to lightly press the pressing block 30 to complete the entire unlocking action, with a rapid unlocking response, suitable for use in elevator malfunctions, power outages, or other emergency situations.

[0029] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An elevator car emergency rescue call device, comprising a device body (1), wherein a hollow groove is provided at the bottom of the front part of the device body (1), a door panel (12) is provided on one side of the hollow groove, a moving component is provided at one end of the door panel (12), and a locking component is provided on the right side of the moving component, characterized in that, The locking assembly includes a locking block (23), a locking pin (29), a pressing block (30), a second spring (31), a rotating rod (32), and a rotating shaft (33). The bottom side of the device body (1) is fixedly connected to the bottom of the locking block (23). The inner wall of the moving assembly is fixedly connected to the top outer wall of the locking pin (29). The bottom of the locking pin (29) is slidably connected to the inner wall of the locking block (23). The inner wall of the locking pin (29) is slidably connected to the outer wall of the pressing block (30). The bottom of the pressing block (30) is fixedly connected to the top of the second spring (31), the bottom of the second spring (31) is fixedly connected to the bottom of the inner wall of the locking post (29), and multiple fixing grooves are equidistantly opened on the bottom circumference of the outer wall of the locking post (29). The two sides of the fixing grooves are fixedly connected to the two ends of the rotating shaft (33), the outer wall of the rotating shaft (33) is rotatably connected to the inner wall of the rotating rod (32), and one bottom end of the rotating rod (32) is fixedly connected to the bottom outer wall of the pressing block (30).

2. The elevator car emergency rescue call device according to claim 1, characterized in that, A button (20) is installed inside the hollow slot, and an LED light (21) is installed inside the hollow slot. The button (20) is located inside the LED light (21). A movable mechanism is provided on one side of the hollow slot. A rotating slot is provided at the top and bottom of the other side of the hollow slot. The bottom of the rotating slot is rotatably connected to one end of a rotating column (13). A door panel (12) is provided on the side of the hollow slot near the rotating slot. A visualization window (14) is provided in the middle of the door panel (12). The visualization window (14) is located in front of the button (20) and the LED light (21). The top and bottom of one end of the door panel (12) are fixedly connected to the rotating column (13). A working slot is provided at the top of the device body (1). A pager (11) is fixedly installed at the bottom of the working slot.

3. The elevator car emergency rescue call device according to claim 2, characterized in that, The movable mechanism includes a movable groove, which is located on the side of the hollow groove away from the door panel (12). A hollow block (27) is provided at one end of the movable groove, and one end of the hollow block (27) is fixedly connected to one side of the hollow groove. A first slide rail is provided at the top and bottom of the movable groove. A first movable block (24) is provided inside the movable groove, and the top and bottom of the first movable block (24) are slidably connected to the first slide rail. One side of one end of the first movable block (24) is fixedly connected to one end of the moving column (26). The movable column (26) is fixedly connected to the hollow block (27) and the blocking block (28) through the other end of the movable column (26). A first spring (25) is sleeved on the outside of the movable column (26), and the two ends of the first spring (25) are fixedly connected to the hollow block (27) and the first movable block (24). Two sets of blocking columns are provided above and below the movable groove, and the rear of the two sets of blocking columns are fixedly connected to one side of the hollow groove. Fixed holes (22) are symmetrically opened on the side of the hollow groove near the movable groove.

4. The elevator car emergency rescue call device according to claim 1, characterized in that, A movable component is provided at the end of the door panel (12) away from the rotating column (13). The movable component includes a sliding groove (15), which is located on the front side of one end of the door panel (12). Two sets of round holes are provided at one end of the door panel (12), and the bottom ends of the round holes penetrate the sliding groove (15). A second slide rail (18) is provided at the top and bottom of the sliding groove (15). A second slide rail (18) is slidably connected inside the second slide rail (18). The movable block (17) has a force plate (16) inside the sliding groove (15), and one end of the force plate (16) is fixedly connected to the second movable block (17). The top outer wall of the locking post (29) is fixedly connected to the inner wall of the force plate (16). The top and bottom ends of the second movable block (17) near the round hole are fixedly connected to one end of the fixing post (19). The fixing post (19) is adapted to the round hole and the fixing hole (22). The fixing post (19) and the round hole are at the same level.

5. The elevator car emergency rescue call device according to claim 2, characterized in that, An installation mechanism is provided at the top of the working groove. The installation mechanism includes a connecting column (9). There are two sets of connecting columns (9), and the two sets of connecting columns (9) are fixedly connected to the two sides of the top of the working groove. A threaded groove (10) is opened at the top of the connecting column (9). A protective cover (6) is installed at the top of the connecting column (9). Positioning columns (5) are fixedly connected to the two sides of the bottom end of the protective cover (6). Threaded holes (8) are opened on both sides of the protective cover (6). The threaded holes (8) and the threaded groove (10) are threadedly connected by nuts (7).

6. The elevator car emergency rescue call device according to claim 2, characterized in that, The front two sides of the working slot are provided with mounting rails (4), the interior of the mounting rails (4) is slidably connected to the communication board (2), and the front of the communication board (2) is provided with a communication hole (3).

Citation Information

Patent Citations

  • Emergency rescue calling device for elevator car

    CN218145208U