Elevator safety edge

Abstract

The utility model belongs to the technical field of elevators, and relates to an elevator safety edge. The elevator safety edge comprises a fixing support, a first metal guide piece, a second metal guide piece and a first metal guide piece, the fixing support comprises a base and a first metal guide piece, the first metal guide piece is arranged on the base, and the base is fixed to the edge area of the inner bottom face of an elevator car; the cover plate assembly comprises an upper cover plate detachably arranged on the base and a second metal guide sheet fixed at the bottom of the upper cover plate, the second metal guide sheet and the first metal guide sheet are arranged in the safety circuit, the periphery of the second metal guide sheet is provided with a sponge, the sponge has a preset thickness, and the thickness of the sponge is smaller than that of the first metal guide sheet. The second metal guide piece and the first metal guide piece have a preset distance in the vertical direction when not pressed, and the second metal guide piece is driven to make contact with the first metal guide piece and conduct a safety circuit when bearing preset pressure, so that the elevator slows down and stops running. The elevator safety edge is convenient to maintain and disassemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators and relates to an elevator safety edge. Background Art

[0002] With the continuous expansion of the home elevator market, the safety of the car operation has become a key issue for villa elevators without car walls. Since villa elevators are usually installed in private homes, the frequency of use and maintenance conditions of users vary. It is particularly important to ensure that the elevator can operate safely in various situations. Especially in the design without car walls, how to quickly stop the elevator in an emergency to protect the safety of passengers is a key issue that must be solved.

[0003] In order to solve this safety problem, safety edge technology is usually used. Generally, electrical switches are added inside the safety edge, and several electrical switches are placed on each edge. When the safety edge is compressed, as long as one of the electrical switches is triggered, a signal will be sent to the elevator control system to stop the car immediately. In this way, it can ensure that when someone steps on the safety edge, the elevator can stop quickly to prevent further accidents.

[0004] However, the existing safety edge is very difficult to repair and disassemble after the internal electrical switch fails. If a switch fails, maintenance personnel need to spend a lot of time to find the problem cable and replace the faulty electrical switch, which is a very cumbersome process. This not only increases the difficulty and cost of maintenance, but may also cause the elevator to be unable to be used normally for a long time, affecting the daily life of users. Utility Model Content

[0005] The utility model aims to provide an elevator safety edge which is convenient for maintenance and disassembly.

[0006] In order to achieve the above object, the utility model provides the following technical solution: an elevator safety edge, the elevator safety edge comprising:

[0007] A fixed bracket, comprising a base and a first metal guide plate arranged on the base, wherein the base is fixed to an edge area of ​​an inner bottom surface of the elevator car;

[0008] The cover plate assembly comprises an upper cover plate detachably arranged on the base and a second metal guide plate fixed to the bottom of the upper cover plate, the second metal guide plate and the first metal guide plate are arranged in a safety circuit, a sponge is arranged on the periphery of the second metal guide plate, the sponge has a preset thickness, so that when the second metal guide plate is not under pressure, there is a preset distance between the second metal guide plate and the first metal guide plate in the vertical direction, and when subjected to a preset pressure, the second metal guide plate is driven to contact the first metal guide plate and conduct the safety circuit, so that the elevator slows down and stops.

[0009] Furthermore, the pedestal includes a base and reinforcing ribs, the base is fixed to the inner bottom surface of the elevator, the reinforcing ribs are fixed to the base, and the first metal guide plate is fixed to the reinforcing ribs.

[0010] Furthermore, the first metal guide piece is fixed to the reinforcing rib by means of plastic screws.

[0011] Furthermore, the reinforcing ribs are steel bars, and insulating tapes are provided between the reinforcing ribs and the first metal guide plate, and between the upper cover plate and the second metal guide plate.

[0012] Furthermore, the base includes a bottom wall and a first side wall extending upward from a long side of the bottom wall, and a guiding space is formed between the first side wall and the reinforcing rib to provide a vertical moving space for the upper cover plate.

[0013] Furthermore, the upper cover plate includes a top wall and a first sub-side wall and a second sub-side wall extending downward from two long sides of the top wall, the first sub-side wall is inserted into the guide space, and the second sub-side wall is attached to the side of the reinforcing rib away from the guide space.

[0014] Further, when the second metal guide piece contacts the first metal guide piece, the bottom of the second sub-side wall is horizontally aligned with the bottom of the bottom wall.

[0015] Further, the first metal guide plate and the second metal guide plate cover at least two edges of the inner bottom surface of the elevator car.

[0016] Furthermore, each edge of the inner bottom surface of the elevator car corresponds to a sub-base and a sub-cover assembly, two adjacent sub-bases are connected by welding, and two adjacent sub-cover assemblies are connected by welding.

[0017] Further, the first metal guide plate includes a plurality of first sub-metal guide plates, each of which is arranged corresponding to an edge of the inner bottom surface of the elevator car, and the plurality of first sub-metal guide plates are connected in sequence; the second metal guide plate includes a plurality of second sub-metal guide plates, each of which is arranged corresponding to an edge of the inner bottom surface of the elevator car, and the plurality of second sub-metal guide plates are connected in sequence.

[0018] The beneficial effect of the utility model is that the present application separates the first metal guide plate and the second metal guide plate by setting a sponge, and ensures that the two maintain a preset distance when not under pressure, and after being under pressure, the second metal guide plate will contact the first metal guide plate and conduct the safety circuit, so that the elevator will quickly slow down and stop, thereby ensuring the safety of passengers. In addition, the upper cover plate and the base are detachably connected, making maintenance and cleaning more convenient, reducing the complexity and time cost of maintenance.

[0019] Furthermore, using sponge as the partition material not only ensures uniform force but also generates no noise during the operation of the elevator, thereby improving the user's riding experience and comfort.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an elevator safety edge when not under pressure as shown in an embodiment of the utility model;

[0022] Figure 2 It is a structural diagram of the elevator safety side when under pressure;

[0023] Figure 3 for Figure 1 A schematic diagram of the structure of the fixed bracket;

[0024] Figure 4 for Figure 1 A schematic diagram of the structure of the middle cover assembly;

[0025] Figure 5 It is a structural schematic diagram of a sub-base of an elevator safety edge shown in another embodiment of the utility model;

[0026] Figure 6 This is a schematic structural diagram of a first sub-metal guide piece of an elevator safety edge shown in another embodiment of the utility model;

[0027] Figure 7 for Figure 5 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] See also Figure 1 The elevator safety edge 100 shown in a preferred embodiment of the present application includes a fixed bracket 1 and a cover plate assembly 2.

[0032] See also Figures 1 to 3 The fixed bracket 1 includes a base 11 and a first metal guide plate 12 arranged on the base 11. The base 11 is fixed to the edge area of ​​the inner bottom surface of the elevator car so that the elevator safety edge 100 can move up and down with the elevator and provide a stable support foundation for the operation of the elevator safety edge 100.

[0033] The base 11 includes a base 111 and a reinforcing rib 112. The base 111 is fixed to the inner bottom surface of the elevator, the reinforcing rib 112 is fixed to the base 111, and the first metal guide piece 12 is fixed to the reinforcing rib 112. The base 111 is the foundation of the entire fixed bracket 1, and plays a role in bearing and fixing, while the reinforcing rib 112 provides additional strength and rigidity to ensure that the first metal guide piece 12 will not be displaced or deformed when subjected to pressure.

[0034] Specifically, the base 111 includes a bottom wall 1111 and a first side wall 1112 extending upward from a long side of the bottom wall 1111, thereby forming an L-shape. At this time, a guide space 113 is formed between the first side wall 1112 and the reinforcing rib 112, which is used to provide a vertical movement space for the cover assembly 2. The guide space 113 enables the cover assembly 2 to move smoothly in the vertical direction when subjected to a preset pressure, thereby guiding the second metal guide piece 23 to contact the first metal guide piece 12.

[0035] The first metal guide 12 is fixed to the reinforcing rib 112 by plastic screws. Since the first metal guide 12 is set in the safety circuit, in order to prevent direct contact between metals and avoid electric sparks caused by friction, and also to facilitate maintenance and replacement, insulating plastic screws are used for assembly. In this embodiment, the reinforcing rib 112 is a steel bar, and an insulating tape 13 is provided between the reinforcing rib 112 and the first metal guide 12 to prevent current leakage, protect the normal operation of the elevator system, and ensure the safety of passengers. Optionally, the reinforcing rib 112 can also be made of insulating material, such as plastic, to ensure electrical safety.

[0036] See also Figure 1 and Figure 4 The cover plate assembly 2 includes an upper cover plate 21 detachably arranged on the base 11 and a second metal guide plate 23 fixed at the bottom of the upper cover plate 21. The second metal guide plate 23 is also arranged in the safety circuit. A sponge 22 is arranged on the periphery of the second metal guide plate 23. The sponge 22 has a preset thickness so that when it is not under pressure, the second metal guide plate 23 and the first metal guide plate 12 have a preset distance in the vertical direction. When subjected to a preset pressure, the sponge 22 is compressed, driving the second metal guide plate 23 to contact the first metal guide plate 12 and conduct the safety circuit, so that the elevator slows down and stops.

[0037] In this embodiment, the upper cover plate 21 includes a top wall 211 and a first sub-side wall 212 and a second sub-side wall 213 extending downward from two long sides of the top wall 211. The first sub-side wall 212 is inserted into the guide space 113 to ensure that the upper cover plate 21 can move smoothly in the vertical direction, thereby driving the second metal guide piece 23 to contact the first metal guide piece 12 when subjected to a preset pressure. The second sub-side wall 213 fits the side of the reinforcing rib 112 away from the guide space 113, further maintaining the stability of the upper cover plate 21.

[0038] When the second metal guide piece 23 contacts the first metal guide piece 12, the bottom of the second sub-side wall 213 is horizontally aligned with the bottom of the bottom wall 1111, so that the surface of the elevator safety edge 100 can be made more neat, and the second sub-side wall 213 can be prevented from being too long and protruding from the horizontal plane where the bottom of the bottom wall 1111 is located when moving downward, causing damage. Since the first sub-side wall 212 moves vertically in the guide space 113, in order to prevent the first sub-side wall 212 from contacting the bottom wall 1111 during the downward movement and interfering with the movement of the first sub-side wall 212, the length of the first sub-side wall 212 is smaller than the length of the second sub-side wall 213.

[0039] In one embodiment, the first metal guide plate 12 and the second metal guide plate 23 only cover one edge of the inner bottom surface of the elevator car. In this case, due to limited space or low requirements for the elevator safety edge 100, the necessary safety function can be achieved by covering a single edge. Although only one edge is covered, the safety circuit can still be effectively turned on when subjected to a preset pressure, ensuring that the elevator can quickly slow down and stop in an emergency.

[0040] In another embodiment, the first metal guide plate 12 and the second metal guide plate 23 cover at least two edges of the inner bottom surface of the elevator car. By covering multiple edges, it is ensured that no matter which direction the pressure comes from, the elevator can respond quickly, turn on the safety circuit, and achieve deceleration and shutdown. In this way, not only the safety is improved, but also it can be ensured that even if the safety edge of one edge fails, the safety edges of other edges can still work normally, further improving the safety of the elevator safety edge 100. In addition, covering multiple edges can also distribute the pressure more evenly, reduce the burden of a single edge, and extend the service life.

[0041] Preferably, it can be set to cover three edges. The direction of the elevator door opening is the front side, and the three edges are the front side and both sides of the elevator. Since passengers usually stand facing the elevator door, when the elevator safety edge 100 is set at the front side and both sides of the elevator, it is more convenient for passengers to step on it. In addition, the solution of setting it to cover three edges can not only cope with pressure from various directions, ensuring that the elevator can be stopped in time in any emergency, but also simplify the installation and maintenance process and control costs.

[0042] See also Figure 5 Each edge of the inner bottom surface of the elevator car corresponds to a sub-base 14 and a sub-cover assembly (not shown), and two adjacent sub-bases 14 are connected by welding to form a continuous base 11, and two adjacent sub-cover assemblies are connected by welding to form a continuous upper cover 21.

[0043] See also Figure 6, the first metal guide 12 includes a plurality of first sub-metal guides 121, each of which is arranged corresponding to an edge of the inner bottom surface of the elevator car, and the plurality of first sub-metal guides 121 are connected together in sequence. The second metal guide 23 includes a plurality of second sub-metal guides (not shown), each of which is arranged corresponding to an edge of the inner bottom surface of the elevator car, and the plurality of second sub-metal guides are connected together in sequence. At this time, one end of the first metal guide 12 is connected to the safety circuit through a cable (not shown), and one end of the second metal guide 23 is also connected to the safety circuit through a cable (not shown), so that the plurality of first sub-metal guides 121 and the second sub-metal guides are both connected to the safety circuit.

[0044] Optionally, each first sub-metal guide 121 is installed on the corresponding sub-base 14, and the second sub-metal guide is installed on the corresponding sub-cover assembly. Adjacent first sub-metal guides 121 and adjacent second sub-metal guides are not connected together. In this case, each first sub-metal guide 121 and the corresponding second sub-metal guide are respectively connected to the safety circuit to form a parallel structure. In this way, even if the first sub-metal guide 121 and the second sub-metal guide corresponding to a certain edge fail, the other edges can still work normally to protect the safety of passengers.

[0045] See also Figures 5 to 7 When adjacent first sub-metal conductors 121 are connected together, and adjacent second sub-metal conductors are connected together, it should be noted that in order to install the welded first sub-metal conductors 121 on the base 11, two adjacent sub-bases 14 need to be provided with an avoidance portion 141 at the welding position, and the avoidance portion 141 is used to allow the first sub-metal conductors 121 to pass through to avoid interference. Specifically, the avoidance portion 141 is a through hole opened at the welding position, so that the first sub-metal conductor 121 can pass through the through hole to ensure that it will not be obstructed during the installation process.

[0046] Optionally, the height of the first side wall 1112 can be lowered at the end of one of two adjacent sub-bases 14 so that the other sub-base 14 can overlap the first side wall 1112 of the previous sub-base 14, and the overlapping part can be welded, and the first sub-metal guide plate 121 can also pass through to avoid interference.

[0047] The present application separates the first metal guide plate 12 and the second metal guide plate 23 by setting a sponge 22, ensuring that the preset distance between the two is maintained when not under pressure, and after being under pressure, the second metal guide plate will contact the first metal guide plate and conduct the safety circuit, so that the elevator will quickly slow down and stop operating, thereby ensuring the safety of passengers. In addition, the upper cover plate 21 and the base 11 are detachably connected, making maintenance and cleaning more convenient, reducing the complexity and time cost of maintenance. Finally, the use of sponge 22 as a separation material not only has uniform force, but also does not generate noise during the operation of the elevator, thereby improving the user's riding experience and comfort.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] 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, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An elevator safety edge, characterized in that: The elevator safety edge includes: A fixed bracket, comprising a base and a first metal guide plate arranged on the base, wherein the base is fixed to an edge area of ​​an inner bottom surface of the elevator car; The cover plate assembly comprises an upper cover plate detachably arranged on the base and a second metal guide plate fixed to the bottom of the upper cover plate, the second metal guide plate and the first metal guide plate are arranged in a safety circuit, a sponge is arranged on the periphery of the second metal guide plate, the sponge has a preset thickness, so that when the second metal guide plate is not under pressure, there is a preset distance between the second metal guide plate and the first metal guide plate in the vertical direction, and when subjected to a preset pressure, the second metal guide plate is driven to contact the first metal guide plate and conduct the safety circuit, so that the elevator slows down and stops.

2. The elevator safety edge according to claim 1, characterized in that: The pedestal includes a base and reinforcing ribs, the base is fixed to the inner bottom surface of the elevator, the reinforcing ribs are fixed to the base, and the first metal guide piece is fixed to the reinforcing ribs.

3. The elevator safety edge according to claim 2, characterized in that: The first metal guide piece is fixed to the reinforcing rib by means of plastic screws.

4. The elevator safety edge according to claim 2, characterized in that: The reinforcing ribs are steel bars, and insulating tapes are provided between the reinforcing ribs and the first metal guide piece, and between the upper cover plate and the second metal guide piece.

5. The elevator safety edge according to claim 2, characterized in that: The base includes a bottom wall and a first side wall extending upward from a long side of the bottom wall, and a guiding space is formed between the first side wall and the reinforcing ribs to provide a vertical moving space for the upper cover plate.

6. The elevator safety edge according to claim 5, characterized in that: The upper cover plate includes a top wall and a first sub-side wall and a second sub-side wall extending downward from two long sides of the top wall, the first sub-side wall is inserted into the guide space, and the second sub-side wall is attached to the side of the reinforcing rib away from the guide space.

7. The elevator safety edge according to claim 6, characterized in that: When the second metal guide piece contacts the first metal guide piece, the bottom of the second sub-side wall is horizontally aligned with the bottom of the bottom wall.

8. The elevator safety edge according to claim 1, characterized in that: The first metal guide sheet and the second metal guide sheet cover at least two edges of the inner bottom surface of the elevator car.

9. The elevator safety edge according to claim 8, characterized in that: Each edge of the inner bottom surface of the elevator car corresponds to a sub-base and a sub-cover assembly, two adjacent sub-bases are connected by welding, and two adjacent sub-cover assemblies are connected by welding.

10. The elevator safety edge according to claim 8, characterized in that: The first metal guide plate includes multiple first sub-metal guide plates, each of which is arranged corresponding to an edge of the inner bottom surface of the elevator car, and the multiple first sub-metal guide plates are connected in sequence; the second metal guide plate includes multiple second sub-metal guide plates, each of which is arranged corresponding to an edge of the inner bottom surface of the elevator car, and the multiple second sub-metal guide plates are connected in sequence.

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