Anti-pinch device for elevator door

Abstract

The utility model discloses an anti-pinch device for an elevator door, and relates to the technical field of elevators. The elevator comprises an elevator frame, the elevator frame is fixedly installed on an elevator or an elevator shaft, a left elevator door and a right elevator door are installed on the top and the bottom of the inner side of the elevator frame in a sliding mode, and the left elevator door and the right elevator door are in transmission connection through an external driving device. By means of the laser head, the photosensitive belt and the refraction glass, when the sliding blocks move synchronously, laser emitted by the laser head can be directly projected to the photosensitive belt, so that the function of sensing thin foreign matter is achieved, due to the high precision of the laser, the thin foreign matter can be recognized accurately, and the situation that transparent glass is not easy to recognize, and the quality of the thin foreign matter is affected is avoided. In order to solve the problems that in the prior art, the anti-pinch treatment is not perfect enough, through grooves which are staggered are formed in the right elevator door and the left elevator door, so that the detection position of the trigger assembly is wider, and meanwhile foreign matter of different heights can be detected.

Description

Technical Field

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

[0002] The elevator door machine is a mechanism responsible for opening and closing the elevator hall car door. When it receives the elevator door opening and closing signals, the elevator door machine controls the door opening motor through its own control system, converting the torque generated by the motor into a force in a specific direction to close or open the door.

[0003] The Chinese patent with publication number CN218231474U discloses an elevator door anti-pinch device, which relates to the technical field of elevators. The elevator door anti-pinch device comprises a left door, the side of the left door is movably connected to the right door, the insides of the left door and the right door are respectively movably connected with flexible plugs, the sides of the two flexible plugs are movably connected, and a buffer device is arranged on the other side of the flexible plug, and the buffer device comprises a slide plate, one end of which is fixedly connected to the side of the flexible plug.

[0004] In this technical means, a flexible insert is used to protect the passenger's hands from being pinched by the door. However, due to the use of flexible inserts and buffer devices to protect the passenger's hands, when the door is closed, if the passenger's hands are placed on the elevator door and are outside the infrared recognition area of ​​the elevator, the deformation of the flexible insert may make it difficult for the elevator to promptly sense the presence of foreign objects, which may easily lead to danger. In addition, the prior art is not perfect in the anti-pinch treatment of transparent glass. Transparent glass cannot be recognized by infrared, and due to its thin size, it is also difficult to be recognized by a mechanical trigger device.

[0005] For this reason, an elevator door anti-pinch device is proposed. Utility Model Content

[0006] The purpose of the utility model is to solve the problems mentioned in the above background technology, and the utility model provides an elevator door anti-pinch device.

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] An elevator door anti-pinch device comprises an elevator frame, wherein the elevator frame is fixedly mounted on an elevator or an elevator shaft, a left elevator door and a right elevator door are slidably mounted on the inner top and bottom of the elevator frame, the left elevator door and the right elevator door are connected by an external driving device, and the left elevator door and the right elevator door can completely cover the elevator frame after being combined.

[0009] Furthermore, the left elevator door includes a door frame assembly, which includes a partition, an identification bin, a door body and a through slot, the door body is slidably installed on the inner bottom and inner bottom of the elevator frame, a partition is fixedly installed inside the door body, an identification bin is provided inside the door body on the right side of the partition, and a through slot is opened on the right inner wall of the identification bin, and the number of the through slots is six groups.

[0010] Furthermore, the left elevator door also includes a trigger assembly, which includes a slider, a slide rod and a spring. The slider is slidably installed inside the through slot, and the shape of the slider matches the through slot. The slide rod is fixedly installed on the right side wall of the partition. A spring is installed on the slide rod, and the slider is slidably connected to the slide rod.

[0011] Furthermore, the left elevator door also includes a laser assembly, which includes a laser head, a refractive glass, a photosensitive belt and a photoreceptor. The laser head is fixedly installed at the bottom of the topmost slider, the refractive glass is fixedly installed on other sliders except the topmost one and passes through the top and bottom of the slider, the projection position of the refractive glass on the horizontal plane coincides with that of the laser head, the photosensitive belt and the photoreceptor are fixedly installed at the inner bottom of the identification bin, and the photoreceptor is located on the left side of the photosensitive belt.

[0012] Furthermore, the upper and lower surfaces of the refractive glass are arranged in parallel and the distance between the left and right sides of the refractive glass is set to three millimeters.

[0013] Furthermore, the right elevator door has the same structure as the left elevator door, and the difference between the right elevator door and the left elevator door is that the through grooves on the right elevator door and the left elevator door are staggered with each other, and the left elevator door and the right elevator door cooperate with each other to form an anti-pinch structure.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model arranges a laser head, a photosensitive belt and a refractive glass, so that when the slider moves synchronously, the laser emitted by the laser head can be directly projected onto the photosensitive belt. When something blocks the movement of the slider, the refractive glass will deviate to block the laser, so that the photosensitive belt cannot sense the laser, thereby achieving the function of sensing thinner foreign objects. When there is no foreign object blocking, the photoreceptor can sense the laser after the left elevator door and the right elevator door are closed, confirming that the doors are closed. Due to the high precision of the laser, the recognition of thinner foreign objects is also more accurate, avoiding the problem that transparent glass is difficult to identify and the anti-pinch treatment is not perfect. By arranging mutually staggered through grooves on the right elevator door and the left elevator door, the detection position of the trigger component is wider, and foreign objects of different heights can be detected at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the slider of the utility model;

[0019] Figure 4 This is a schematic diagram of the enlarged structure of Part A of the utility model;

[0020] Figure 5 It is a schematic diagram of the enlarged structure of part B of the utility model;

[0021] Figure numerals: 1. elevator frame; 2. left elevator door; 21. door body; 22. partition; 23. identification bin; 24. through slot; 25. slider; 26. laser head; 27. slide bar; 28. spring; 29. ​​refractive glass; 210. photosensitive belt; 211. photoreceptor; 3. right elevator door. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0026] like Figures 1 to 5 As shown, an elevator door anti-pinch device includes an elevator frame 1, which is fixedly installed on the elevator or elevator shaft, and a left elevator door 2 and a right elevator door 3 are slidably installed on the inner top and bottom of the elevator frame 1. The left elevator door 2 and the right elevator door 3 are transmission-connected by an external driving device, and the left elevator door 2 and the right elevator door 3 can completely cover the elevator frame 1 after being combined; specifically, when the elevator door is closed, the left elevator door 2 and the right elevator door 3 move relative to each other, and the left elevator door 2 and the right elevator door 3 can sense objects in the door gap. When encountering obstruction, the left elevator door 2 and the right elevator door 3 are immediately controlled to open outwards to stop the movement of the elevator and prevent harm to the human body.

[0027] like Figure 1 , Figure 2 As shown, the left elevator door 2 includes a door frame assembly, which includes a partition 22, an identification bin 23, a door body 21 and a through slot 24. The door body 21 is slidably mounted between the inner bottom and the inner bottom of the elevator frame 1. The partition 22 is fixedly mounted inside the door body 21. An identification bin 23 is provided inside the door body 21 on the right side of the partition 22. A through slot 24 is provided on the right inner wall of the identification bin 23. The through slots 24 are provided in six groups.

[0028] like Figure 1 , Figure 3 As shown, the left elevator door 2 also includes a trigger assembly, which includes a slider 25, a slide bar 27 and a spring 28. The slider 25 is slidably installed inside the through slot 24. The shape of the slider 25 matches the through slot 24. The slide bar 27 is fixedly installed on the right side wall of the partition 22. The spring 28 is sleeved on the slide bar 27. The slider 25 is slidably connected with the slide bar 27. Specifically, through the set trigger assembly, when the left elevator door 2 and the right elevator door 3 are closed, the slider 25 is squeezed against each other, and the slider 25 moves inward under the action of pressure. Under the joint action of the through slot 24 and the slide bar 27, the moving track of the slider 25 is limited. At the same time, due to the set spring 28, when the left elevator door 2 and the right elevator door 3 are opened, the slider 25 can return to the untriggered position.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4, Figure 5 As shown, the left elevator door 2 also includes a laser assembly, which includes a laser head 26, a refractive glass 29, a photosensitive belt 210 and a photoreceptor 211. The laser head 26 is fixedly installed at the bottom of the topmost slider 25, and the refractive glass 29 is fixedly installed on other sliders 25 except the topmost slider and passes through the top and bottom of the slider 25. The projection position of the refractive glass 29 on the horizontal plane coincides with the laser head 26. The photosensitive belt 210 and the photoreceptor 211 are fixedly installed at the inner bottom of the identification chamber 23, and the photoreceptor 211 is located on the left side of the photosensitive belt 210. Specifically, the laser head 26 is provided to project laser light onto the photosensitive belt 210, and the refractive glass 29 is provided on the path of the laser head 26. Since the laser head 26 is provided on the topmost slider At the bottom of the block 25, the refractive glass 29 is arranged on the other sliders 25. When the sliders 25 move synchronously, the laser emitted by the laser head 26 can be directly projected onto the photosensitive belt 210. When the photosensitive belt 210 senses the laser, the left elevator door 2 and the right elevator door 3 are closed normally. When something blocks the movement of the slider 25, the refractive glass 29 will be offset to block the laser, so that the photosensitive belt 210 cannot sense the laser. At this time, the left elevator door 2 and the right elevator door 3 are controlled to open. When there is no foreign object blocking, the photoreceptor 211 can sense the laser after the left elevator door 2 and the right elevator door 3 are closed, confirming that the door has been closed. Due to the high precision of the laser, the recognition of thinner foreign objects is also more accurate, avoiding the problem that transparent glass is not easy to identify and the anti-pinch treatment is not perfect.

[0030] like Figure 5 As shown, the upper and lower surfaces of the refractive glass 29 are arranged in parallel and the distance between the left and right sides of the refractive glass 29 is set to three millimeters; specifically, by setting the refractive glass 29 with the distance between the left and right sides set to three millimeters, thinner foreign objects can be better identified. At the same time, due to the manufacturing limitations of the refractive glass 29, the refraction of light will increase the angle, so that the actual measurement accuracy is less than three millimeters.

[0031] like Figure 1 , Figure 2 As shown, the right elevator door 3 has the same structure as the left elevator door 2, and the difference between the right elevator door 3 and the left elevator door 2 is that the through grooves 24 on the right elevator door 3 and the left elevator door 2 are staggered with each other, and the left elevator door 2 and the right elevator door 3 cooperate with each other to form an anti-pinch structure; specifically, by arranging the through grooves 24 staggered with each other on the right elevator door 3 and the left elevator door 2, the detection position of the trigger component is wider, and foreign objects at different heights can be detected at the same time.

[0032] In summary: when the elevator door is closed, the left elevator door 2 and the right elevator door 3 move relative to each other, and the left elevator door 2 and the right elevator door 3 can sense objects in the door gap. Through the trigger component, when the left elevator door 2 and the right elevator door 3 are closed, the slider 25 is squeezed against each other, and the slider 25 moves inward under the action of pressure. Under the joint action of the through groove 24 and the slide rod 27, the moving track of the slider 25 is limited. At the same time, due to the spring 28, when the left elevator door 2 and the right elevator door 3 are opened, the slider 25 can return to the untriggered position, and the laser head 26 is used to project laser onto the photosensitive belt 210. By arranging a refractive glass 29 on the path of the laser head 26, since the laser head 26 is arranged at the bottom of the topmost slider 25, and the refractive glass 29 is arranged on other sliders 25, when the sliders 25 are opened at the same time When the slider 25 moves, the laser emitted by the laser head 26 can be directly projected onto the photosensitive belt 210. When the photosensitive belt 210 senses the laser, the left elevator door 2 and the right elevator door 3 are closed normally. When something blocks the movement of the slider 25, the refractive glass 29 will offset and block the laser, causing the photosensitive belt 210 to not sense the laser. At this time, the left elevator door 2 and the right elevator door 3 are controlled to open. When there is no foreign object blocking the left elevator door 2 and the right elevator door 3, the photoreceptor 211 can sense the laser after the left elevator door 2 and the right elevator door 3 are closed, confirming that the door is closed. Due to the high precision of the laser, the recognition of thinner foreign objects is also more accurate, avoiding the problem that transparent glass is difficult to identify and the anti-pinch treatment is not perfect. By arranging mutually staggered through grooves 24 on the right elevator door 3 and the left elevator door 2, the detection position of the trigger component is wider, and foreign objects of different heights can be detected at the same time.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An elevator door anti-pinch device, characterized in that: The invention comprises an elevator frame (1), wherein the elevator frame (1) is fixedly mounted on an elevator or an elevator shaft, and a left elevator door (2) and a right elevator door (3) are slidably mounted on the inner top and bottom of the elevator frame (1), wherein the left elevator door (2) and the right elevator door (3) are connected by an external driving device, and when the left elevator door (2) and the right elevator door (3) are combined, the elevator frame (1) can be completely covered.

2. An elevator door anti-pinch device according to claim 1, characterized in that: The left elevator door (2) comprises a door frame assembly, the door frame assembly comprises a partition (22), an identification bin (23), a door body (21) and a through slot (24), the door body (21) is slidably mounted on the inner bottom and inner bottom of the elevator frame (1), the partition (22) is fixedly mounted inside the door body (21), the identification bin (23) is arranged inside the door body (21) on the right side of the partition (22), the right inner wall of the identification bin (23) is provided with a through slot (24), and the number of the through slots (24) is six groups.

3. An elevator door anti-pinch device according to claim 2, characterized in that: The left elevator door (2) further comprises a trigger assembly, which comprises a slider (25), a slide bar (27) and a spring (28). The slider (25) is slidably mounted inside the through slot (24). The shape of the slider (25) matches the through slot (24). The slide bar (27) is fixedly mounted on the right side wall of the partition (22). The slide bar (27) is sleeved with a spring (28). The slider (25) is slidably connected to the slide bar (27).

4. An elevator door anti-pinch device according to claim 3, characterized in that: The left elevator door (2) further comprises a laser assembly, which comprises a laser head (26), a refractive glass (29), a photosensitive belt (210) and a photoreceptor (211); the laser head (26) is fixedly mounted on the bottom of the topmost slider (25); the refractive glass (29) is fixedly mounted on other sliders (25) except the topmost slider and passes through the top and bottom of the slider (25); the projection position of the refractive glass (29) on the horizontal plane coincides with that of the laser head (26); the photosensitive belt (210) and the photoreceptor (211) are fixedly mounted on the inner bottom of the identification chamber (23); and the photoreceptor (211) is located on the left side of the photosensitive belt (210).

5. An elevator door anti-pinch device according to claim 4, characterized in that: The upper and lower surfaces of the refractive glass (29) are arranged in parallel and the distance between the left and right sides of the refractive glass (29) is set to three millimeters.

6. An elevator door anti-pinch device according to claim 2, characterized in that: The right elevator door (3) has the same structure as the left elevator door (2). The difference between the right elevator door (3) and the left elevator door (2) is that the through grooves (24) on the right elevator door (3) and the left elevator door (2) are arranged alternately, and the left elevator door (2) and the right elevator door (3) cooperate with each other to form an anti-pinch structure.

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