Elevator maintenance protection device
The embedded protective door design solves the problem of manual handling required for existing elevator maintenance protective devices, enabling the immediate opening and closing of the protective door, thus improving the safety and efficiency of elevator maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-03
AI Technical Summary
Existing elevator maintenance safety devices require manual handling, are inconvenient to use, cannot be deployed immediately, and cannot effectively prevent people from falling.
Design an embedded protective door, including a first door leaf and a second door leaf, which are fixedly installed inside the elevator door frame. The protective cloth can be extended and retracted through a roller support and a hinged connecting rod. The door can be quickly opened and closed by using a locking structure and a handle groove design.
It enables the immediate opening and closing of the safety door, reduces manual operation, improves safety and maintenance efficiency, avoids occupying extra space, and ensures the normal use of the elevator.
Smart Images
Figure CN224076874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevator safety technology, specifically to an elevator maintenance and protection device. Background Technology
[0002] An elevator is a transportation device that serves a rigid track within a building, specifically serving a number of floors. Vertical elevators are fixed lifting devices that serve designated floors. They have a car that runs between at least two vertical or inclined rigid guide rails with an angle of less than 15°. The size and structure of the car facilitate passenger entry and exit or loading and unloading of goods.
[0003] Elevator maintenance and protection devices are essential equipment for elevator safety maintenance. They are mainly used to provide safety for maintenance personnel and passengers during elevator maintenance, repair, or emergency rescue, preventing accidental falls or tumbles into the elevator shaft. Existing elevator maintenance and protection devices are usually designed as folding or telescopic barriers, which are placed at the elevator entrance when in use and are suitable for temporary repairs, modifications, or emergency rescues.
[0004] However, existing elevator maintenance and protection devices require personnel to carry them to the usage scene, which increases the workload of users and cannot provide immediate protection for elevators that are out of service. Therefore, improvements are needed to be made to the existing elevator maintenance and protection devices. Utility Model Content
[0005] Therefore, the purpose of this utility model is to provide an elevator maintenance and protection device to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an elevator maintenance and protection device, comprising a protective door installed inside an elevator door frame, the protective door consisting of a first door leaf and a second door leaf, each of the first and second door leaves including a fixed plate fixedly installed inside the elevator door frame, and a roller support fixedly connected to one side of the fixed plate, and a protective cloth installed on the roller support, the end of the protective cloth being installed with a connecting support, and a door edge plate fixedly connected to one side of the connecting support, the door edge plates of the first and second door leaves respectively having a first handle and a second handle rotatably installed, the protective door being in use, the outer wall of the door edge plate, the outer wall of the first handle and the second handle being on the same vertical plane as the outer wall of the elevator door frame, and the first handle and the second handle being provided with a locking structure for locking the first door leaf and the second door leaf.
[0007] By adopting the above technical solution, the safety door is embedded in the elevator door frame, eliminating the need for users to move the safety door, thus saving time and effort, and preventing displacement when the safety door is pulled.
[0008] Furthermore, a handle groove is provided on the door edge panel, and the inner wall of the handle groove has a semi-circular cross-section.
[0009] By adopting the above technical solution, the inner wall of the handle groove corresponds to the first handle and the second handle, so that the first handle and the second handle are completely embedded in the surface of the door panel when closed, without any protruding edges, thereby avoiding the risk of bumping into pedestrians.
[0010] Furthermore, multiple sets of hinged connecting rods connected to the connecting pillars are rotatably installed on both sides of the roller support for reinforcing the protective door.
[0011] By adopting the above technical solution, when opening or closing the protective door, the rotation of the hinged linkage can provide additional support force to the protective door, thereby enhancing the stability of the door.
[0012] Furthermore, the locking structure includes a locking plate fixedly installed on the first handle, and a locking slot corresponding to the locking plate is provided on the second handle. The first handle and the second handle are connected to each other through the locking plate and the locking slot.
[0013] By adopting the above technical solution, the locking plate and locking slot can be used to quickly fix and release the first and second handles, thereby improving work efficiency.
[0014] Furthermore, a connecting plate is slidably installed inside the second handle, and multiple sets of protrusions that are slidably connected to the second handle are fixedly installed at the end of the connecting plate. The ends of the protrusions protrude from the second handle and are located in the locking slot. The locking plate is provided with limiting holes corresponding to the protrusions. A metal spring piece connected to the connecting plate is installed inside the second handle.
[0015] By adopting the above technical solution, the cooperation of the protrusion and the limiting hole can achieve precise positioning and locking, effectively preventing accidental slippage or detachment and ensuring the stability of the connection.
[0016] Furthermore, a movable plate is slidably installed inside the limiting hole, and a pushing block is installed in the middle of the movable plate. The end corner of the pushing block is designed with an angle. A first spring that is in contact with the angle of the end of the pushing block is slidably installed inside the end of the locking plate. A pressing block that is slidably connected to the locking plate is installed at the other end of the first spring, and the pressing block protrudes from the locking plate.
[0017] By adopting the above technical solution, by setting an oblique angle at the end of the pressing block that corresponds to the corner of the pushing block, the user can accurately squeeze the pushing block when pressing the pressing block, thereby achieving the function of separating the movable plate.
[0018] Furthermore, a telescopic rod is installed on the outer wall of the movable plate, the two sets of movable plates are connected to each other through the telescopic rod, and a second spring connected to the movable plate is sleeved on the outer wall of the telescopic rod.
[0019] By adopting the above technical solution, after the two sets of movable plates are separated by the pressure of the push block, the movable plates are reset by the second spring.
[0020] In summary, the present invention has the following main advantages:
[0021] This utility model features an embedded safety door, allowing for rapid deployment of the safety device during elevator installation, maintenance, or shutdown to prevent accidental falls into the shaft. The device eliminates the need for users to move it, saving time and effort. When not in use, it is completely concealed within the elevator door frame, occupying no extra space and maintaining aesthetics and normal elevator operation. The safety net and hinged linkage further ensure the door's stability, preventing pets or debris from accidentally falling into the shaft and ensuring safety. The first and second handles allow users to lock both safety doors after pulling them out; unlocking is achieved by simply pressing the button on the first handle. This simple operation ensures rapid response and improves maintenance efficiency. Attached Figure Description
[0022] Figure 1 This is a three-dimensional structural diagram of the present invention after it has been fully opened;
[0023] Figure 2 This is a three-dimensional structural diagram of the present invention when it is fully folded up and partially cut out.
[0024] Figure 3 This is a three-dimensional structural diagram of the entire utility model in its usage scenario;
[0025] Figure 4 This is a three-dimensional structural diagram of the handle of this utility model;
[0026] Figure 5 This is an exploded view of the handle of this utility model after being cut open;
[0027] Figure 6 This is a three-dimensional structural diagram of the handle of this utility model after being cut apart.
[0028] In the diagram: 1. Protective door; 10. First door leaf; 11. Second door leaf; 12. First handle; 120. Locking plate; 121. Pressing block; 122. First spring; 123. Limiting hole; 124. Movable plate; 125. Pushing block; 126. Second spring; 127. Telescopic rod; 13. Second handle; 130. Locking slot; 131. Protrusion; 132. Connecting plate; 133. Metal spring; 14. Fixing plate; 15. Roller support; 16. Hinge connecting rod; 17. Protective cloth; 18. Connecting support; 19. Door side panel; 190. Handle groove. Detailed Implementation
[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0030] The embodiments of this utility model will be described below based on its overall structure.
[0031] An elevator maintenance and protection device, such as Figure 1 - Figure 6 As shown, it includes a protective door 1 installed inside the elevator door frame, and the protective door 1 consists of a first door leaf 10 and a second door leaf 11.
[0032] Specifically, both the first door leaf 10 and the second door leaf 11 include a fixing plate 14 fixedly installed inside the elevator door frame, so that the safety door 1 is embedded in the elevator door frame, eliminating the need for users to move the safety door 1, achieving a time-saving and labor-saving effect, and preventing displacement when pulling the safety door 1. A roller support 15 is fixedly connected to one side of the fixing plate 14, and a protective cloth 17 is installed on the roller support 15. The protective cloth 17 can extend and retract through the cooperation of the roller and torsion spring installed inside the roller support 15. The protective cloth 17 can prevent passing personnel, pets, or debris from falling into the shaft. A safety device is installed at the end of the protective cloth 17. A connecting pillar 18 is attached, and a door edge plate 19 is fixedly connected to one side of the connecting pillar 18. A first handle 12 and a second handle 13 are respectively rotatably installed on the door edge plate 19 of the first door leaf 10 and the second door leaf 11. When the protective door 1 is not in use, the outer walls of the door edge plate 19, the first handle 12 and the second handle 13 are all on the same vertical plane as the outer wall of the elevator door frame, which does not occupy extra space, does not affect the aesthetics and normal use of the elevator, and the first handle 12 and the second handle 13 are equipped with locking structures for locking the first door leaf 10 and the second door leaf 11. The operation is simple, ensuring a rapid response to needs and improving maintenance efficiency.
[0033] Please see Figure 1 - Figure 6The door panel 19 has a handle groove 190, and the inner wall of the handle groove 190 has a semi-circular cross-section. The inner wall of the handle groove 190 corresponds to the first handle 12 and the second handle 13, so that when the first handle 12 and the second handle 13 are closed, they are completely embedded in the surface of the door panel 19 without any protruding edges, thereby avoiding the risk of bumping into pedestrians.
[0034] Please see Figure 1 - Figure 6 Multiple sets of hinged connecting rods 16, which are connected to the connecting rods 18, are rotatably installed on both sides of the roller support 15 to reinforce the protective door 1. When the protective door 1 is opened or closed, the rotation of the hinged connecting rods 16 can provide additional support force to the protective door 1, thereby enhancing the stability of the door.
[0035] Please see Figure 1 - Figure 6 The locking structure includes a locking plate 120 fixedly installed on the first handle 12, and a locking slot 130 corresponding to the locking plate 120 on the second handle 13. The first handle 12 and the second handle 13 are connected to each other through the locking plate 120 and the locking slot 130. The cooperation between the locking plate 120 and the locking slot 130 enables the first handle 12 and the second handle 13 to be quickly fixed and released, thereby improving work efficiency.
[0036] Please see Figure 1 - Figure 6 A connecting plate 132 is slidably installed inside the second handle 13, and multiple sets of protrusions 131 that are slidably connected to the second handle 13 are fixedly installed at the end of the connecting plate 132. The ends of the protrusions 131 protrude from the second handle 13 and are located in the locking slot 130. The locking plate 120 is provided with limiting holes 123 corresponding to the protrusions 131. Through the cooperation of the protrusions 131 and the limiting holes 123, precise positioning and locking can be achieved, which can effectively prevent accidental sliding or falling off and ensure the stability of the connection. A metal spring 133 connected to the connecting plate 132 is installed inside the second handle 13. The deformation of the metal spring 133 causes the connecting plate 132 and the protrusions 131 to move.
[0037] Please see Figure 1 - Figure 6A movable plate 124 is slidably installed inside the limiting hole 123 to facilitate the extrusion of the protrusion 131. A pushing block 125 is installed in the middle of the movable plate 124, and the end corner of the pushing block 125 is designed with an angle. By setting an angle corresponding to the end corner of the pushing block 125 at the end of the pressing block 121, the user can accurately push the pushing block 125 open when pressing the pressing block 121, thereby achieving the function of separating the movable plate 124. A first spring 122 is slidably installed inside the end of the locking insert plate 120, which is in contact with the angle of the end of the pushing block 125. The other end of the first spring 122 is installed with a pressing block 121 that is slidably connected to the locking insert plate 120. The pressing block 121 protrudes from the locking insert plate 120, so that the user only needs to press the pressing block 121 to separate the locking insert plate 120 from the locking slot 130, which is convenient for the user to operate.
[0038] Please see Figure 1 - Figure 6 The outer wall of the movable plate 124 is equipped with a telescopic rod 127. The two sets of movable plates 124 are connected to each other through the telescopic rod 127. The outer wall of the telescopic rod 127 is fitted with a second spring 126 connected to the movable plate 124. After the two sets of movable plates 124 are pressed by the push block 125 to separate left and right, the movable plate 124 is reset by the second spring 126.
[0039] The working principle of this utility model is as follows: When the user needs to open this protective device, first press one end of the first handle 12 to rotate the first handle 12 out of the handle groove 190, and pull out the first door leaf 10 through the first handle 12. Then, rotate the second handle 13 out of the handle groove 190 and pull out the second door leaf 11. During the process of pulling out the first door leaf 10 and the second door leaf 11, the protective cloth 17 is pulled and gradually extended by the connecting support 18 through the roller set inside the roller support 15. At the same time, the hinge joints of multiple sets of hinged connecting rods 16 begin to rotate and gradually extend. After the first door leaf 10 and the second door leaf 11 are pulled out to the correct position, the lock of the first handle 12 is engaged. When the stop plate 120 is inserted into the locking slot 130 of the second handle 13, the protrusion 131 inside the locking slot 130 is subjected to pressure from the corner of the locking plate 120, causing the connecting plate 132 inside the cavity to press against the metal spring 133 and deform it. As a result, the connecting plate 132 and the protrusion 131 move inward. After the locking plate 120 is inserted into the locking slot 130, the protrusion 131 matches the position of the limiting holes 123 opened on both sides of the locking plate 120. The metal spring 133 releases pressure and allows the protrusion 131 to enter the limiting hole 123, thus completing the locking of the first handle 12 and the second handle 13.
[0040] When the user needs to retract this protective device into the elevator door frame, they only need to press one end of the pressing block 121 on the second handle 13, so that the oblique cut part of the other end of the pressing block 121 applies pressure to the oblique cut position of the push block 125, causing the push block 125 to push the movable plate 124 to separate left and right, thereby driving the telescopic rods 127 at both ends of the movable plate 124 to stretch outward. During this process, the movable plate 124 applies an outward force to the protrusion 131 in the limiting hole 123 and squeezes out the protrusion 131, forcing the metal spring 133 inside the locking slot 130 to deform again. While pressing the pressing block 121, the user pulls the first handle 12 and the second handle 13 to the sides and separates them left and right. At this time, the first spring 122 sleeved on the pressing block 121 relieves the force. The pressing block 121 is reset, and the second spring 126 sleeved on the telescopic rod 127 relieves the force, causing the movable plate 124 and the pushing block 125 to reset. After the user unlocks the protective door 1, the first door leaf 10 and the second door leaf 11 automatically retract the protective cloth 17 by means of the cooperation of the roller and torsion spring set inside the roller support 15, achieving the effect of saving time and effort. When the first door leaf 10 and the second door leaf 11 automatically return to the inside of the elevator door frame, the door side plate 19 is on the same plane as the elevator door frame. The user then turns the first handle 12 and the second handle 13 so that they enter the handle groove 190. The inside of the handle groove 190 is magnetically attracted to the first handle 12 and the second handle 13. At this time, the protective device is completely hidden inside the elevator door frame.
[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. An elevator maintenance and protection device, characterized in that, Includes a protective door (1) installed inside the elevator door frame, the protective door (1) consisting of a first door leaf (10) and a second door leaf (11); The first door leaf (10) and the second door leaf (11) both include a fixed plate (14) fixedly installed in the elevator door frame, and a roller support (15) is fixedly connected to one side of the fixed plate (14), and a protective cloth (17) is installed on the roller support (15). A connecting support (18) is installed at the end of the protective cloth (17), and a door edge plate (19) is fixedly connected to one side of the connecting support (18). The first door leaf (10) and the second door leaf (11) are respectively rotatably mounted on the door side plate (19). When the protective door (1) is not in use, the outer wall of the door side plate (19), the outer wall of the first handle (12) and the second handle (13) are all on the same vertical plane as the outer wall of the elevator door frame. The first handle (12) and the second handle (13) are provided with locking structures for locking the first door leaf (10) and the second door leaf (11).
2. The elevator maintenance and protection device according to claim 1, characterized in that: The door panel (19) has a handle groove (190) and the inner wall of the handle groove (190) has a semi-circular cross-section.
3. The elevator maintenance and protection device according to claim 1, characterized in that: Multiple sets of hinged connecting rods (16) connected to the connecting rods (18) are rotatably installed on both sides of the roller support (15) to reinforce the protective door (1).
4. The elevator maintenance and protection device according to claim 1, characterized in that: The locking structure includes a locking plate (120) fixedly installed on the first handle (12), and a locking slot (130) corresponding to the locking plate (120) is provided on the second handle (13). The first handle (12) and the second handle (13) are connected to each other through the locking plate (120) and the locking slot (130).
5. The elevator maintenance and protection device according to claim 4, characterized in that: A connecting plate (132) is slidably installed inside the second handle (13), and multiple sets of protrusions (131) that are slidably connected to the second handle (13) are fixedly installed at the end of the connecting plate (132). The end of the protrusion (131) protrudes from the second handle (13) and is located in the locking slot (130). The locking plate (120) is provided with a limiting hole (123) corresponding to the protrusion (131). A metal spring (133) connected to the connecting plate (132) is installed inside the second handle (13).
6. The elevator maintenance and protection device according to claim 5, characterized in that: A movable plate (124) is slidably installed in the limiting hole (123), and a push block (125) is installed in the middle of the movable plate (124). The end corner of the push block (125) is designed with an angle. A first spring (122) is slidably installed in the end of the locking plate (120) and is in contact with the angle of the end of the push block (125). A pressing block (121) is installed at the other end of the first spring (122) and is slidably connected to the locking plate (120). The pressing block (121) protrudes from the locking plate (120).
7. The elevator maintenance and protection device according to claim 6, characterized in that: The movable plate (124) is equipped with a telescopic rod (127) on its outer wall. The two sets of movable plates (124) are connected to each other through the telescopic rod (127), and the outer wall of the telescopic rod (127) is fitted with a second spring (126) connected to the movable plate (124).