Opposite door opening anti-pinch mechanism for elevator

Abstract

The utility model discloses an elevator opposite door opening anti-pinch mechanism which comprises an elevator door frame, the upper side of the elevator door frame is fixedly connected with a connecting plate, a limiting rod is fixedly connected in the elevator door frame, a sealing plate is connected to the limiting rod in a sleeved mode, a through hole is formed in the sealing plate and corresponds to the limiting rod, and a spring is connected to the limiting rod in a sleeved mode. One side of the upper end of the elevator door frame is fixedly connected with a limiting plate, the side, close to the connecting plate, of the limiting plate is fixedly connected with a distance sensor, one side of the distance sensor is provided with a clamping plate, the clamping plate makes contact with a limiting groove, and the limiting groove is located in the upper side of the elevator door frame. According to the anti-pinch device for the elevator door, the distance is arranged between the two adjacent elevator door frames, and the sealing plates are moved to be in contact with each other through the springs and the limiting rods, so that a safety gap is formed between the two elevator doors, and the phenomenon that the hands are pinched is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator doors, in particular to an anti-pinch mechanism for opposite-opening elevator doors. Background Art

[0002] Opposite-opening elevator doors are usually also called opening elevator doors or double-opening elevator doors. Generally, doors are installed on both sides of the elevator. When the elevator arrives at a floor, the doors on both sides will open towards the middle at the same time, and passengers can enter and exit from both sides of the elevator simultaneously. Especially during peak hours, it can significantly reduce the waiting time of passengers. However, during the process of opening and closing the elevator doors, there is usually a phenomenon of pinching hands.

[0003] According to the "anti-pinch mechanism for opposite-opening elevator doors" with the Chinese patent publication number CN221343519U, it mainly describes that when the left elevator door and the right elevator door are normally closed through the induction mechanism, the sliding plate normally enters the inside of the groove. When there is an object blocking between the left elevator door and the right elevator door, the object pushes the whole sliding plate to move, so that the conductive block contacts the conductive plate, and controls the elevator door to move in the opposite direction, thereby achieving the function of preventing the elevator door from pinching hands. During this process, the opening and closing of the elevator car door mostly rely on electronic sensors, and sometimes the electronic sensors are prone to misoperation.

[0004] Therefore, an anti-pinch mechanism for opposite-opening elevator doors is proposed to solve the problem that during this process, the opening and closing of the elevator car door mostly rely on electronic sensors, and sometimes the electronic sensors are prone to misoperation. Content of the Utility Model

[0005] The technical problem to be solved by the utility model: During this process, the opening and closing of the elevator car door mostly rely on electronic sensors, and sometimes the electronic sensors are prone to misoperation. Therefore, an anti-pinch mechanism for opposite-opening elevator doors is proposed.

[0006] The technical solution adopted by the utility model to solve the technical problem is: An anti-pinch mechanism for opposite-opening elevator doors, including an elevator door frame. A connecting plate is fixedly connected to the upper side of the elevator door frame. A limiting rod is fixedly connected inside the elevator door frame. A sealing plate is sleeved on the limiting rod. A through hole is opened in the sealing plate and corresponds to the limiting rod. A spring is sleeved on the limiting rod. Pad rings are in contact with both ends of the spring. Two of the pad rings are in contact with the sealing plate. A cushion block is adhesively connected to one side of the sealing plate. A limiting plate is fixedly connected to one side of the upper end of the elevator door frame. A distance sensor is fixedly connected to the side of the limiting plate close to the connecting plate. A clamping plate is arranged on one side of the distance sensor. The clamping plate is in contact with a limiting groove. The limiting groove is located on the upper side of the elevator door frame. An electric push rod is fixedly connected to the limiting plate and corresponds to the clamping plate.

[0007] As a preferred technical solution of the present utility model, a buffer sleeve is fixedly connected to the clamping plate, the buffer sleeve is in contact with the output end of the electric push rod, and the buffer sleeve is made of rubber material. By setting the buffer sleeve, the friction between the electric push rod and the clamping plate can be reduced.

[0008] As a preferred technical solution of the present utility model, a damper is fixedly connected to one side inside the elevator door frame, and the damper corresponds to the sealing plate. By setting the damper, the abrasion of the sealing plate colliding with the elevator door frame can be reduced.

[0009] As a preferred technical solution of the present utility model, a card slot is opened at the bottom end of the sealing plate, and a roller is rotatably connected to the card slot through a rotating shaft. By setting the card slot and the roller, the friction during the movement of the sealing plate can be reduced.

[0010] As a preferred technical solution of the present utility model, sliding balls are rotatably embedded on four sides of the sealing plate away from each other inside the through hole, and the sliding balls are in contact with the limiting rods. By setting the sliding balls, the friction between the limiting rods and the sealing plate is reduced.

[0011] The present utility model has the following advantages: By setting a distance between two adjacent elevator door frames, and making the sealing plates move to contact each other through springs and limiting rods, a safety gap is formed between the two elevator doors, thereby avoiding the pinching hand phenomenon. And by controlling the extension of the electric push rod to move the clamping plate and the sealing plate, the sealing plate can be completely retracted into the elevator door frame when the elevator door is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional stereoscopic sectional structure schematic diagram of an elevator opposite-opening anti-pinching mechanism according to a preferred embodiment of the present utility model;

[0013] Figure 2 is a sectional structure schematic diagram of the sealing plate test of an elevator opposite-opening anti-pinching mechanism according to a preferred embodiment of the present utility model;

[0014] Figure 3 is an enlarged structure schematic diagram at A of an elevator opposite-opening anti-pinching mechanism according to a preferred embodiment of the present utility model.

[0015] Description of the reference numerals: 1, elevator door frame; 2, limiting rod; 3, sealing plate; 4, through hole; 5, spring; 6, cushion ring; 7, cushion block; 8, limiting plate; 9, electric push rod; 10, distance sensor; 11, clamping plate; 12, limiting groove; 13, buffer sleeve; 14, damper; 15, roller; 16, sliding ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be further described below with reference to the drawings.

[0017] Please refer to Figures 1-3 A kind of anti-pinch mechanism for opposite-opening elevator doors shown in the figure. It includes an elevator door frame 1. Connecting plates are fixedly connected to the upper sides of the elevator door frames 1. When the two elevator door frames 1 are fully extended, a certain gap can be formed to avoid the occurrence of pinching hands. A limiting rod 2 is fixedly connected inside the elevator door frame 1. A sealing plate 3 is sleeved on the limiting rod 2. A through hole 4 is opened in the sealing plate 3 and the through hole 4 corresponds to the limiting rod 2. A spring 5 is sleeved on the limiting rod 2. Pad rings 6 are in contact with both ends of the spring 5. Among them, two pad rings 6 are in contact with the sealing plate 3. Under the action of the spring 5, the sealing plate 3 extends and moves, so as to compact the gap formed between the two elevator door frames 1. A cushion block 7 is adhesively connected to one side of the sealing plate 3. The cushion block 7 reduces the wear of the collision between the two sealing plates 3. A limiting plate 8 is fixedly connected to one side of the upper end of the elevator door frame 1. A distance sensor 10 is fixedly connected to the side of the limiting plate 8 close to the connecting plate. The distance sensor 10 is used to monitor the distance between the limiting plate 8 and the clamping plate 11. A clamping plate 11 is arranged on one side of the distance sensor 10. The clamping plate 11 is in contact with a limiting groove 12. The limiting groove 12 is located on the upper side of the elevator door frame 1. An electric push rod 9 is fixedly connected to the limiting plate 8 and the electric push rod 9 corresponds to the clamping plate 11. When the electric push rod 9 extends, the clamping plate 11 can be moved towards the connecting plate side.

[0018] Among them, the output end of the electric push rod 9 is in contact with a buffer sleeve 13. The buffer sleeve 13 is fixedly connected to the clamping plate 11. The buffer sleeve 13 is made of rubber material. By setting the buffer sleeve 13, the friction force when the electric push rod 9 collides with the clamping plate 11 can be reduced.

[0019] Among them, the sealing plate 3 corresponds to a damper 14. The damper 14 is fixedly connected to one side inside the elevator door frame 1. By setting the damper 14, a buffer can be provided between the elevator door frame 1 and the sealing plate 3.

[0020] Among them, the roller 15 is rotatably connected to the card slot through a rotating shaft. The card slot is located at the bottom end of the sealing plate 3. By setting the roller 15, it is convenient for the sealing plate 3 to move.

[0021] Among them, the limiting rod 2 is in contact with a sliding ball 16. The sliding ball 16 is rotatably embedded in the four sides of the through hole 4 that are far away from each other. The through hole 4 is located on the sealing plate 3. By setting the sliding ball 16, the friction force between the limiting rod 2 and the through hole 4 can be reduced. A connecting plate is fixedly connected to the limiting rod 2 inside the through hole 4.

[0022] Working principle: When the control system (the control system is a common component of the elevator system and will not be elaborated here) controls the relative movement of the two elevator door frames 1 to provide a closing effect, the elevator door frames 1 are fully extended, and a gap will be generated between the elevator door frames 1, thus avoiding the phenomenon of pinching hands by the elevator door frames 1. When the spring 5 is in the unloaded state and fully extended, the sealing plate 3 is extended, and the two cushion blocks 7 are in contact. Since the sealing plate 3 is only affected by the spring 5, the sealing plate 3 will provide a barrier to the passengers. When the control system controls the two elevator door frames 1 to move away from each other and the passengers withdraw from the elevator car, at this time, the electric push rod 9 extends and pushes the buffer sleeve 13 and the clamping plate 11 to move, so that the sealing plate 3 moves and contacts the damper 14. At this time, the elevator door frames 1 and the sealing plate 3 move synchronously to both sides, thus facilitating the complete opening of the elevator door.

[0023] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

[0024] Other parts not detailed in the present invention belong to the prior art and will not be elaborated here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-pinch mechanism for opposite-opening elevator doors, comprising an elevator door frame (1), and connecting plates are fixedly connected to the upper sides of the elevator door frame (1). It is characterized in that, A limiting rod (2) is fixedly connected inside the elevator door frame (1). A sealing plate (3) is sleeved on the limiting rod (2). A through hole (4) is formed in the sealing plate (3) and corresponds to the limiting rod (2). A spring (5) is sleeved on the limiting rod (2). Pad rings (6) are in contact with both ends of the spring (5). Two of the pad rings (6) are in contact with the sealing plate (3). A cushion block (7) is adhesively connected to one side of the sealing plate (3). One side of the upper end of the elevator door frame (1) is fixedly connected with a limiting plate (8). A distance sensor (10) is fixedly connected to the limiting plate (8) close to the connecting plate. A clamping plate (11) is arranged on one side of the distance sensor (10). The clamping plate (11) is in contact with a limiting groove (12). The limiting groove (12) is located on the upper side of the elevator door frame (1). An electric push rod (9) is fixedly connected to the limiting plate (8) and corresponds to the clamping plate (11).

2. The anti-pinch mechanism for opposite-opening elevator doors according to claim 1, characterized in that, A buffer sleeve (13) is fixedly connected to the clamping plate (11). The buffer sleeve (13) is in contact with the output end of the electric push rod (9). The buffer sleeve (13) is made of rubber material.

3. The anti-pinch mechanism for opposite-opening elevator doors according to claim 1, characterized in that, A damper (14) is fixedly connected to one side inside the elevator door frame (1). The damper (14) corresponds to the sealing plate (3).

4. The anti-pinch mechanism for opposite-opening elevator doors according to claim 3, characterized in that, A clamping groove is formed at the bottom end of the sealing plate (3), and a roller (15) is rotatably connected to the clamping groove through a rotating shaft.

5. The anti-pinch mechanism for opposite-opening elevator doors according to claim 4, characterized in that Sliding balls (16) are rotatably embedded on four sides of the sealing plate (3) far away from each other inside the through hole (4). The sliding balls (16) are in contact with the limiting rod (2).

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