Anti-pinch elevator door pocket

Abstract

The utility model relates to an anti-pinch elevator door pocket which comprises a door pocket shell, a trigger piece and a displacement detection device, the trigger piece is arranged in a gap between the door pocket shell and an elevator landing door, and the displacement detection device is connected with an elevator door control system. The trigger part moves under the action of external force, the displacement detection device can detect the displacement condition of the trigger part and send a signal to the elevator door control system, and the elevator door control system executes safety protection action. The anti-pinch elevator door pocket has the advantages of being simple in structure, convenient to install and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator door cover capable of preventing pinching. Background Art

[0002] Elevators have become a special equipment that we often use. With the increasing application of elevators in life, the safety of elevators is becoming more and more important. In current elevator equipment, two door frames are usually installed between the elevator hall door and the walls on both sides of the elevator door. The elevator door frame can protect the walls on both sides of the elevator door from collision with external objects, and prevent the walls on both sides of the elevator door from wear and damage due to long-term use, thereby extending the service life of the elevator; the elevator door frame can also prevent the walls on both sides of the elevator door from deformation, rotting and other problems due to moisture or water seepage, thereby improving the stability and durability of the elevator; the elevator door frame also has the function of decorating and beautifying the internal environment of the elevator; in addition, the elevator door frame can also cover the line equipment, reduce maintenance costs, and facilitate maintenance. In order to avoid interference or collision between the elevator hall door and the door frame when the elevator hall door moves, a gap is provided between the elevator door frame and the elevator hall door in the prior art.

[0003] When the elevator door is closed, if someone's fingers or clothes touch the gap between the door frame and the elevator, once the elevator hall door is opened, the person's fingers can easily be pulled into the gap directly or by clothes, and the elevator door system cannot sense the actual situation at the gap at all, so it is easy to cause accidental injuries such as pinching, which poses a great safety hazard. At present, there are only a few solutions to take protective measures for this gap, and the anti-pinch structure of the existing technology is relatively complex, and there are also problems such as inconvenience in manufacturing and installation, and high cost. Therefore, it is necessary to design a simple structure and an anti-pinch elevator door frame to prevent safety accidents such as pinching of hands and objects in the gap between the elevator hall door and the door frame. Utility Model Content

[0004] Based on this, the purpose of the utility model is to overcome the shortcomings or defects of the prior art and provide an anti-pinch elevator door frame, including a door frame shell, a trigger member and a displacement detection device, wherein the trigger member is arranged in the gap between the door frame shell and the elevator hall door, and the displacement detection device is connected to the elevator door control system; the trigger member is displaced when subjected to external force, and the displacement detection device can detect the displacement of the trigger member and send a signal to the elevator door control system, and the elevator door control system performs a safety protection action.

[0005] The anti-pinch elevator door cover of the utility model ingeniously uses simple structures such as spring pieces to trigger the anti-pinch safety protection action of the elevator, and has the advantages of simple structure, easy installation and low cost.

[0006] Furthermore, the trigger member includes an elastic member and a trigger plate, the trigger plate is movably arranged on the door cover shell through at least one of the elastic members, and the trigger portion of the trigger plate is located in the gap between the door cover shell and the elevator hall door.

[0007] Furthermore, the door cover shell is a U-shaped structure with its opening facing the elevator door panel, and the opening of the door cover shell on the side close to the elevator door is folded inward to form a frill structure.

[0008] Furthermore, the length of the trigger portion of the trigger plate is represented by H, and the height of the elevator door panel is represented by h, where H=0.5h~1.

[0009] Furthermore, the elastic member is a spring sheet, and the number of the spring sheets is 3.

[0010] Furthermore, the spring pieces are arranged at equal intervals in the vertical direction of the trigger plate.

[0011] Furthermore, the displacement detection device is a micro switch, a photoelectric switch or a displacement sensor.

[0012] Furthermore, it also includes an auxiliary part, including an auxiliary parallel part and an auxiliary vertical part. The auxiliary parallel part is located in the U-shaped structure of the door frame outer shell. The two ends of the auxiliary parallel part extend in the direction of the trigger plate and in the opposite direction of the trigger plate to form two auxiliary vertical parts parallel to each other. The two auxiliary vertical parts are fixed on the door frame outer shell.

[0013] Furthermore, the material of the spring piece is elastic metal.

[0014] Furthermore, the spring piece and the trigger plate, the spring piece and the auxiliary component, and the auxiliary component and the door cover shell are connected by one or more of the following connection methods: bolt connection, riveting, bonding and welding.

[0015] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view schematic diagram of embodiment 1 of the utility model;

[0017] Figure 2 This is a working principle diagram of Embodiment 1 of the utility model;

[0018] Figure 3 It is a top view schematic diagram of embodiment 2 of the utility model.

[0019] Description of the drawings: door frame shell 10, parallel portion 11, vertical portions 12a, 12b, frill structure 121, spring piece 20, trigger plate 30, displacement detection device 40, auxiliary part 50, auxiliary parallel portion 51, auxiliary vertical portion 52. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Example 1

[0022] The anti-pinch elevator door cover of the utility model is installed between the elevator hall door and the wall of the elevator door, and is fixed on the wall. One door cover is correspondingly arranged on one side of the wall. Figure 1 , which is a top view of the first embodiment of the utility model. The elevator door cover comprises: a door cover shell 10, a trigger member and a displacement detection device 40, wherein the trigger member in this embodiment comprises a spring piece 20 and a trigger plate 30.

[0023] The door casing shell 10 is located in the gap between the wall and the elevator hall door panel, and includes a parallel portion 11 parallel to the wall and the elevator door panel, and two vertical portions 12a and 12b connected to the two ends of the parallel portion 11. The vertical portions 12a and 12b are perpendicular to the wall, wherein the vertical portion 12a is arranged at a position close to the elevator door; and the vertical portion 12b is arranged at a position far from the elevator door. The three sides of the parallel portion 11, the vertical portions 12a and 12b form a semi-enclosed U-shaped structure, with the opening facing the elevator door panel.

[0024] The spring sheet 20 is located in the U-shaped structure formed by the door cover shell 10, one end of which is fixed to the parallel portion 11 of the door cover shell 10, and the other end is movably arranged in the door cover shell, and the moving direction is the same as the moving direction of the elevator door. The spring sheet 20 and the door cover shell 10 can be connected by bolt connection, riveting, bonding, welding, etc., preferably bonding. The spring sheet 20 is preferably an elastic metal sheet.

[0025] The trigger plate 30 is movably arranged on the door casing shell 10 through at least one spring piece 20, and the moving direction is the same as the moving direction of the elevator door panel, and the trigger part of the trigger plate 30 is located in the gap between the door casing shell 10 and the elevator hall door. The number of the spring pieces 20 is preferably 3, and the spring pieces 20 are arranged at equal intervals in the vertical direction of the trigger plate 30, so that the trigger plate 30 is tightly against the door casing shell 10, avoiding the formation of a gap between the trigger plate 30 and the door casing shell 10, which causes a safety hazard. Furthermore, the spring piece 20 and the trigger plate 30 can be connected by bolt connection, riveting, bonding, welding, etc. to enhance the stability between the two, preferably bolt connection.

[0026] The displacement detection device 40 is fixed to the door casing shell 10 through a mounting bracket, connected to the elevator door control system, and arranged within the moving range of the spring sheet 20, and is used to detect the displacement change of the trigger plate 30. The trigger plate 30 can open the displacement detection device 40 by moving the spring sheet 20 to the position of the displacement detection device 40. The displacement detection device 40 sends a signal to the elevator door control system, and the elevator door control system performs a safety protection action after receiving the signal. Specifically, the safety protection action includes controlling the elevator door panel to stop the door opening action or perform the door closing action. The displacement detection device 40 can be a micro switch or a photoelectric switch, preferably a micro switch.

[0027] See also Figure 2 The working principle of the anti-pinch elevator door cover of this embodiment is as follows: when a person's finger is inserted into the gap between the door cover and the elevator door or a person's clothes are brought into the gap when the elevator door is opened, the triggering part of the trigger plate 30 is subjected to the corresponding external force and moves in the direction of the force, and the trigger plate 30 moves through the spring 20 and turns on the displacement detection device 40, and the displacement detection device 40 sends a signal to the elevator door control system, and the elevator door control system performs a safety protection action after receiving the signal. When the external force is removed, the trigger plate 30 returns to its original position under the elastic force of the spring 20, and the safety protection action is released.

[0028] Furthermore, the trigger portion length of the trigger plate 30 is represented by H, and the height of the elevator door panel is represented by h. When the trigger portion length H of the trigger plate 30 is less than the height h of the elevator door panel, the trigger plate 30 is set at a position where a hand-pinching accident is more likely to occur, which can save costs and prevent hand-pinching accidents to a large extent; when the trigger portion length H of the trigger plate 30 is equal to the height h of the elevator door panel, hand-pinching accidents can be prevented to the greatest extent. Therefore, preferably, H = 0.5h ~ 1h.

[0029] Furthermore, the technicians found that since the trigger plane of the anti-pinch trigger structure of the prior art is located on the same plane as the door cover shell, there is still the problem of easy accidental touch, which will cause inconvenience to users who normally use the elevator. Therefore, the present application also folds the opening of the vertical part 12a inward to form a frill structure 121 to prevent people from accidentally touching the trigger plate 30 when using it. When the trigger plate 30 is against the door cover, since the frill structure 121 is raised relative to the inner side of the door cover shell, the trigger plane of the trigger plate 30 is located on the inner side of the vertical part 12a of the door cover shell 10, forming a stepped structure. When the cleaning staff cleans the surface of the door cover shell 10, their fingertips or cleaning tools are blocked by the door cover shell, and it is not easy to extend into the gap to move the trigger plate 30, or when the fingertips or cleaning tools are extended into the gap but still within the safe range, the trigger plate 30 will not move.

[0030] In addition, the frill structure 121 makes the opening end of the door cover shell beautiful and smooth, which can prevent the installer from scratching it during transportation and installation, or from accidentally pinching people's fingers when using the elevator. At the same time, the frill structure 121 increases the shell thickness at the opening of the door cover shell 10, and also has the advantage of increasing the shell strength.

[0031] In some embodiments, the anti-pinch elevator door frame does not include a trigger plate 30, and the displacement detection device 40 is opened by directly moving the spring clip 20. Each spring clip can be installed at a position where finger pinching accidents are likely to occur. The installation position is the trigger point that triggers the elevator door control system to perform a safety protection action.

[0032] In some embodiments, other types of elastic members such as springs may be used to replace the elastic sheet 20 in this embodiment.

[0033] Example 2

[0034] See also Figure 3 , this embodiment is basically the same as the embodiment 1, except that: the anti-pinch elevator door frame of this embodiment further includes an auxiliary member 50. The auxiliary member 50 is approximately "Z"-shaped as a whole, and specifically includes an auxiliary parallel portion 51 and an auxiliary vertical portion 52. The auxiliary parallel portion 51 is located in the U-shaped structure of the door frame shell 10 and is parallel to the parallel portion 11 of the door frame shell 10. The two ends of the auxiliary parallel portion 51 extend in the direction of the trigger plate and in the opposite direction of the trigger plate to form two mutually parallel auxiliary vertical portions, and the two auxiliary vertical portions are fixed on the door frame shell 10. Correspondingly, one end of the spring sheet 20 is fixed on the auxiliary parallel portion 51 of the auxiliary member 50, and the other end is movably arranged in the door frame shell. The auxiliary member 50 has the function of enhancing the strength of the door frame shell 10, and can also provide support for the spring sheet 20 and the displacement detection device 40, thereby extending the service life of the anti-pinch elevator door frame. The auxiliary part 50 and the spring sheet 20, and the auxiliary part 50 and the door cover outer shell 10 can be connected by bolt connection, riveting, bonding, welding or the like. The auxiliary part 50 and the spring sheet 20 are preferably connected by bolts, and the auxiliary part 50 and the door cover outer shell 10 are preferably bonded.

[0035] Compared with the prior art, the anti-pinch elevator door frame of the utility model cleverly uses simple structures such as spring pieces and trigger plates to trigger the anti-pinch safety protection action of the elevator, and has the advantages of simple structure, easy installation, and low cost. A frill structure is further provided to reduce the occurrence of accidental touch. The strength of the door frame is also strengthened by auxiliary parts, which is conducive to improving the durability of the anti-pinch elevator door frame of the utility model.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. An anti-pinch elevator door frame, characterized in that: It includes a door frame shell, a trigger member and a displacement detection device. The trigger member is arranged in the gap between the door frame shell and the elevator hall door, and the displacement detection device is connected to the elevator door control system. The trigger member is displaced when subjected to external force. The displacement detection device can detect the displacement of the trigger member and send a signal to the elevator door control system, and the elevator door control system executes a safety protection action.

2. The anti-pinch elevator door frame according to claim 1, characterized in that: The trigger member includes an elastic member and a trigger plate. The trigger plate is movably arranged on the door cover shell through at least one of the elastic members, and the trigger portion of the trigger plate is located in the gap between the door cover shell and the elevator hall door.

3. The anti-pinch elevator door frame according to claim 2, characterized in that: The door cover shell is a U-shaped structure with its opening facing the elevator door panel, and the opening of the door cover shell on one side close to the elevator door is folded inwards to form a frill structure.

4. The anti-pinch elevator door frame according to claim 3, characterized in that: The length of the triggering portion of the triggering plate is represented by H, and the height of the elevator door panel is represented by h, where H=0.5h~1h.

5. The anti-pinch elevator door frame according to claim 4, characterized in that: The elastic member is a spring sheet, and the number of the spring sheets is 3.

6. The anti-pinch elevator door frame according to claim 5, characterized in that: The spring pieces are arranged at equal intervals in the vertical direction of the trigger plate.

7. The anti-pinch elevator door frame according to claim 6, characterized in that: The displacement detection device is a micro switch, a photoelectric switch or a displacement sensor.

8. The anti-pinch elevator door frame according to claim 7, characterized in that: It also includes auxiliary parts, including an auxiliary parallel part and an auxiliary vertical part. The auxiliary parallel part is located in the U-shaped structure of the door frame shell. The two ends of the auxiliary parallel part extend in the direction of the trigger plate and in the opposite direction of the trigger plate to form two auxiliary vertical parts parallel to each other. The two auxiliary vertical parts are fixed on the door frame shell.

9. The anti-pinch elevator door frame according to claim 8, characterized in that: The material of the spring piece is elastic metal.

10. The anti-pinch elevator door frame according to claim 9, characterized in that: The spring piece and the trigger plate, the spring piece and the auxiliary component, and the auxiliary component and the door cover shell are connected by one or more of the following connection methods: bolt connection, riveting, bonding and welding.

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