Contact assembly applied to elevator door lock

Abstract

The contact assembly applied to the elevator door lock comprises a main body and an installation block, one side of the installation block is provided with an insertion block capable of being inserted into one side of the main body, and one side of the main body is provided with an insertion groove; an execution mechanism is arranged in the main body, and a dustproof mechanism is arranged in the slot. Based on a multi-connecting-rod transmission mechanism, mechanical transmission is effectively prevented from being blocked and unsmooth, the operation precision is improved, compared with a traditional sealing gasket, the dustproof film which is completely sealed is arranged, dust adhesion can be reduced, the situation that dust enters an executing mechanism to affect the working precision is avoided, maintenance is convenient, the weathered dustproof film is replaced regularly, and the working efficiency is improved. And the execution mechanism does not need to be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator door lock contact assemblies, in particular to a contact assembly applied to an elevator door lock. Background Art

[0002] The door lock device of the elevator is generally equipped with a door lock contact switch for safety reasons. It is mainly divided into two parts: the contact switch and the contact base. The contact base is connected to the elevator safety circuit, and the contact switch is set on the door lock hook. When the elevator door is closed, the door lock hook rotates to lock and drives the contact switch to insert into the contact base, so that the elevator safety circuit is connected and the elevator can operate normally.

[0003] Chinese patent announcement number CN219892073U discloses an elevator door lock contact switch assembly, which discloses an elevator door lock contact switch assembly, including an installation box and an installation plate, a contact plug is fixedly installed on the left side of the installation plate, an installation slot is provided on the inner wall of the installation box, two sliding slots are respectively provided on the inner right side wall of the installation slot, a groove for the contact plug to pass through is provided on the right side of the installation box, and a fixed contact is fixedly installed on the inner top wall and the inner bottom wall of the installation slot. When the contact plug is inserted between two drive plates, the two drive plates can be driven to move in reverse, so that the slide plate can be driven to move in reverse along the track of the sliding slot by moving the guide column, and then the moving contact can be driven to contact the fixed contact to connect the circuit, and because the guide column slides on the inner wall of the sealing ring, a large amount of air and dust from the outside can be prevented from entering the installation slot, so that the moving contact and the fixed contact can be prevented from being attached with dust and oxidation, and thus the problem of poor contact can be effectively avoided.

[0004] It solves the problems of poor contact and oxidation caused by dust infiltration, but it still has defects. The drive plate, guide column, and sliding plate included in it are displaced. In the process of the sliding plate driving the second compression spring and the moving contact to displace, the displacement is easily sluggish. The sliding plate included in it may become stuck during the displacement process, resulting in the circuit being disconnected, affecting the safety of use.

[0005] Moreover, when dust penetrates into the connection between the sealing mechanism and the guide column, the sealing mechanism included therein may also cause displacement sluggishness or jamming, requiring irregular maintenance, and the maintenance operation process is complicated. Summary of the invention

[0006] Technical problems to be solved by the utility model

[0007] The current sealing mechanism is complex to maintain and the actuator mechanical operation is sluggish and jammed.

[0008] Technical solutions for solving technical problems

[0009] Further advantageous and in some cases inventive embodiments and developments of the invention are explained in the following description.

[0010] A contact assembly applied to an elevator door lock comprises a main body and a mounting block, wherein one side of the mounting block is provided with an insert block capable of being inserted into one side of the main body, and one side of the main body is provided with a slot;

[0011] An actuator is arranged inside the main body, and a dustproof mechanism is arranged inside the slot.

[0012] Preferably, the actuator comprises:

[0013] A working chamber is arranged inside the main body and located on a side of the slot away from the mounting block;

[0014] A slide rod is slidably arranged through the inner wall of the slot and the inner wall of the working cavity;

[0015] A push plate, mounted on one end of the slide bar close to the slot;

[0016] A connecting rod, rotatably mounted on the end of the sliding rod located in the working chamber;

[0017] A connecting plate, rotatably mounted on an end of the connecting rod away from the sliding rod;

[0018] Limiting frames, arranged on the outer wall of the connecting plate, and the number of the limiting frames corresponds to the number of the connecting plates;

[0019] A moving contact is mounted on the end of the connecting plate away from the connecting rod;

[0020] The fixed contact is installed on the inner wall of the working cavity and is located on the displacement extension line of the moving contact.

[0021] Preferably, the actuator further comprises:

[0022] A first spring, mounted on the outer wall of the slide rod, one end of which is connected to the inner wall of the slot, and the other end of which is connected to the end surface of the push plate;

[0023] A connecting column, mounted on the end of the connecting plate close to the connecting rod;

[0024] The second spring is used to connect the two connecting columns.

[0025] Preferably, the connecting rod and the sliding rod are rotationally connected via a first rotating shaft;

[0026] The connecting plate and the connecting rod are rotatably connected via a second rotating shaft.

[0027] Preferably, each of the connecting plates is provided corresponding to at least two of the limiting frames.

[0028] Preferably, the connecting rod, the second rotating shaft, the connecting plate, the moving contact and the fixed contact are each provided with at least two and are symmetrically arranged along the axis of the sliding rod.

[0029] Preferably, the dustproof mechanism comprises a dustproof film, and the dustproof film is arranged between the inner wall of the slot and the outer wall of the push plate.

[0030] Effect of utility model

[0031] According to the utility model, through the setting of a multi-link transmission mechanism, mechanical transmission jamming and stagnation can be effectively avoided, and the operating accuracy can be improved. In addition, it has a completely sealed dustproof film, which can reduce dust adhesion compared to traditional sealing gaskets, and avoid dust entering the actuator to affect the working accuracy. It is easy to maintain, and only needs to replace the weathered dustproof film regularly, without the need to clean the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following is a detailed description of the embodiments of the present invention according to the accompanying drawings. In the accompanying drawings:

[0033] Figure 1 It is a side view of the utility model;

[0034] Figure 2 It is a side view of the internal structure of the utility model;

[0035] Figure 3 It is an internal structure view of the utility model.

[0036] Description of Reference Numerals

[0037] 1. Main body; 2. Mounting block; 201. Insert block; 3. Slot; 301. Dust-proof film; 302. Working chamber; 4. Push plate; 401. Slide rod; 402. First spring; 403. First rotating shaft; 404. Connecting rod; 405. Second rotating shaft; 406. Connecting plate; 407. Moving contact; 408. Fixed contact; 409. Limiting frame; 5. Connecting column; 501. Second spring. DETAILED DESCRIPTION

[0038] Hereinafter, a contact assembly applied to an elevator door lock, which is one embodiment of the present invention, will be described with reference to the accompanying drawings.

[0039] Please refer to Figure 1-Figure 3 As shown, a contact assembly applied to an elevator door lock includes a main body 1 and a mounting block 2, an insert block 201 is provided on one side of the mounting block 2, and a slot 3 is embedded in a side of the main body 1 corresponding to the insert block 201;

[0040] An actuator is arranged inside the main body 1, and a dustproof mechanism is arranged inside the slot 3 of the main body 1;

[0041] Specifically, the main body 1 is installed on one elevator door, and the mounting block 2 is set on the other elevator door. When the elevator doors on both sides are closed, the insert block 201 is inserted into the main body 1 to trigger the actuator;

[0042] Regarding the implementing agencies, including:

[0043] The working chamber 302 is arranged inside the main body 1 and is located on a side of the slot 3 away from the mounting block 2;

[0044] The slide bar 401 is arranged to penetrate the wall of the slot 3 and the inner wall of the working chamber 302;

[0045] Specifically, the slide bar 401 is slidably arranged with the inner wall of the main body 1;

[0046] The push plate 4 is mounted on one end of the slide bar 401 close to the slot 3;

[0047] A first spring 402 is mounted on the outer wall of the slide bar 401, one end of which is connected to the inner wall of the slot 3, and the other end is connected to the end surface of the push plate 4;

[0048] Specifically, the first spring 402 is used to realize the elastic connection between the push plate 4 and the main body 1;

[0049] The connecting rod 404 is rotatably disposed at the end of the sliding rod 401 away from the push plate 4 through the first rotating shaft 403;

[0050] The connecting plate 406 is rotatably mounted on the end of the connecting rod 404 away from the first rotating shaft 403 through the second rotating shaft 405;

[0051] The limiting frames 409 are arranged on the outer wall of the connecting plate 406, and the number of the limiting frames 409 corresponds to the number of the connecting plates 406;

[0052] Specifically, each connecting plate 406 is provided with at least two limit frames 409, and the limit frames 409 are used to limit the displacement direction of the connecting plate 406;

[0053] The moving contact 407 is mounted on the end of the connecting plate 406 away from the second rotating shaft 405;

[0054] The fixed contact 408 is located on the inner wall of the working chamber 302 and on the displacement extension line of the moving contact 407;

[0055] Specifically, the connecting rod 404, the second rotating shaft 405, the connecting plate 406, the limiting frame 409, the moving contact 407 and the fixed contact 408 are each provided with at least two and are symmetrically arranged along the axis of the sliding rod 401;

[0056] A connecting column 5, disposed at an end of each connecting plate 406 close to the second rotating shaft 405;

[0057] The second spring 501 is used to connect the two connecting columns 5;

[0058] Specifically, the second spring 501 is used to achieve relative positioning of the connecting plate 406 and the main body 1, thereby completing the positioning of the moving contact 407 without being subjected to external force, and avoiding contact between the moving contact 407 and the fixed contact 408 due to vibration, thereby affecting safety;

[0059] During use, the insert block 201 on one side of the mounting block 2 is inserted into the groove, driving the push plate 4 to move toward the working chamber 302, thereby driving the first rotating shaft 403 to move. Since the connecting plate 406 connected to the first rotating shaft 403 is relatively limited to the inner wall of the working chamber 302, and the sliding rod 401 is rotatably connected to the connecting rod 404, and the connecting rod 404 is rotatably connected to the connecting plate 406, the displacement of the first rotating shaft 403 can drive the connecting plate 406 to move, thereby driving the moving contact 407 to contact the fixed contact 408, and completing the execution work;

[0060] That is, the connecting rod 404, the first rotating shaft 403, the second rotating shaft 405, the limiting frame 409 and the connecting plate 406 are used to change the force direction of the sliding rod 401 to complete the work;

[0061] Regarding dust prevention mechanisms, including:

[0062] The dustproof film 301 is disposed in the slot 3 and fixedly connected to the outer edge of the push plate 4;

[0063] Specifically, since the sliding rod 401 is slidably connected to the inner wall of the slot 3, in order to prevent dust from entering the working chamber 302 from the slot 3 and affecting the working accuracy of the actuator, the dustproof film 301 is set. When the push plate 4 moves, the dustproof film 301 can block dust from entering the slot 3, thereby completing the dustproofing of the working chamber 302.

[0064] Normally used status

[0065] The staff installs the main body 1 included in the device in one elevator door panel, installs the mounting block 2 in the other elevator door panel, and adjusts the mounting position until the two elevator doors are completely closed, the plug block 201 on one side of the mounting block 2 can be inserted into the slot 3 on one side of the main body 1, and can drive the actuator to work by pushing the push plate 4, and connect the fixed contact 408 and the moving contact 407 included in the actuator to the elevator security circuit (derived from the prior art, the purpose is to monitor whether the elevator door is completely closed). During use:

[0066] The elevator door is closed, driving the mounting block 2 and the main body 1 to move toward each other until the insert block 201 is inserted into the slot 3. The insert block 201 drives the push plate 4 to move toward the working chamber 302, and changes the direction of force through the slide bar 401, the first rotating shaft 403, the connecting rod 404, and the second rotating shaft 405, driving the connecting plate 406 to move, thereby driving the moving contact 407 to move until it contacts the fixed contact 408, the circuit is contacted, and the feedback signal is sent to the elevator security circuit. The main controller determines that the elevator door is completely closed and the elevator is running;

[0067] Dust-proof function

[0068] A dustproof film 301 is provided between the inner wall of the slot 3 and the outer wall of the push plate 4. Compared with the existing sealing gasket seal, it can prevent dust from entering the working chamber 302 and will not cause the displacement of the actuator to be sluggish, thereby affecting the working accuracy of the actuator and the safety of the elevator.

[0069] Anti-stuttering effect

[0070] This device adopts a multi-link 404 mechanism for transmission. Compared with the current transmission mechanism, it can avoid mechanical transmission stagnation and improve operation accuracy.

[0071] Compared with the existing technology, this device adopts a multi-link 404 transmission, which effectively avoids mechanical transmission jams and stagnation, improves operating accuracy, and has a completely sealed dustproof film 301. Compared with traditional sealing gaskets, it can reduce dust adhesion and avoid dust entering the actuator to affect the working accuracy. It is easy to maintain and only needs to replace the weathered dustproof film 301 regularly without cleaning the actuator.

[0072] The present invention is not limited to the embodiment, and various modifications can be made without departing from the spirit of the present invention.

Claims

1. A contact assembly for an elevator door lock, comprising a main body (1) and a mounting block (2), characterized in that: One side of the installation block (2) is provided with an insert block (201) that can be inserted into one side of the main body (1), and one side of the main body (1) is provided with a slot (3); An actuator is arranged inside the main body (1), and a dustproof mechanism is arranged inside the slot (3); The executive mechanism comprises: A working chamber (302) is arranged inside the main body (1) and is located on a side of the slot (3) away from the mounting block (2); A sliding rod (401) is slidably arranged to penetrate the inner wall of the slot (3) and the inner wall of the working chamber (302); A push plate (4) mounted on one end of the slide bar (401) close to the slot (3); A connecting rod (404) rotatably mounted on an end portion of the sliding rod (401) located in the working chamber (302); A connecting plate (406) is rotatably mounted on an end of the connecting rod (404) away from the sliding rod (401); Limiting frames (409), arranged on the outer wall of the connecting plate (406), and the number of the limiting frames (409) corresponds to the number of the connecting plates (406); A moving contact (407) is mounted on an end of the connecting plate (406) away from the connecting rod (404); The fixed contact (408) is installed on the inner wall of the working chamber (302) and is located on the displacement extension line of the moving contact (407). A first spring (402) is mounted on the outer wall of the slide rod (401), one end of which is connected to the inner wall of the slot (3) and the other end of which is connected to the end surface of the push plate (4); A connecting column (5) is mounted on the end of the connecting plate (406) close to the connecting rod (404); A second spring (501), used for connecting the two connecting posts (5); The dustproof mechanism comprises a dustproof film (301), and the dustproof film (301) is arranged between the inner wall of the slot (3) and the outer wall of the push plate (4).

2. The contact assembly for elevator door lock according to claim 1, characterized in that: The connecting rod (404) and the sliding rod (401) are rotatably connected via a first rotating shaft (403); The connecting plate (406) and the connecting rod (404) are rotatably connected via a second rotating shaft (405).

3. The contact assembly for elevator door lock according to claim 1, characterized in that: Each of the connecting plates (406) is provided corresponding to at least two of the limiting frames (409).

4. The contact assembly for elevator door lock according to claim 2, characterized in that: The connecting rod (404), the second rotating shaft (405), the connecting plate (406), the moving contact (407) and the fixed contact (408) are each provided in at least two pieces and are symmetrically arranged along the axis of the sliding rod (401).

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