Anti-pinch device for elevator door

Abstract

The utility model is suitable for the technical field of elevator safety, and provides an elevator door anti-pinch device which comprises an elevator car, an elevator door and a control panel. A safety assembly is arranged at one end of the elevator door and comprises a safety plate, a fixing plate, a connecting block, a connecting rod, a first sensor and a second sensor. One end of the elevator door is connected with three fixing plates, one ends of the fixing plates are connected with connecting rods, one ends of the connecting rods are provided with safety plates, one ends of the safety plates and one ends of the fixing plates are correspondingly connected with first sensors, and the ends, close to each other, of the two safety plates are correspondingly connected with second sensors. According to the anti-pinch device for the elevator door, through the arrangement of the safety plate, the fixing plate, the connecting block and the connecting rod and the arrangement of the sensor in cooperation, mechanical collision induction on whether an object exists at an elevator entrance or not is achieved, a detection induction blind area is eliminated, the safety and reliability of the device are improved, and accidental injuries are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator safety, and in particular relates to an elevator door anti-pinch device. Background Art

[0002] With the continuous development of modernization, high-rise buildings are everywhere in cities. The essential building facilities for such buildings are elevators. Elevators bring convenience and speed to people, but if used improperly, they can also cause serious safety consequences. In elevator accident investigations, if a person's body parts or surrounding objects are clamped by the elevator, and the elevator continues to operate, it can lead to very serious consequences.

[0003] The utility model of Chinese patent application number CN202020195121.7 discloses an elevator door anti-pinch device, including a motor, a car, an elevator door moving mechanism, a first door-collecting groove, a second door-collecting groove, an infrared sensing mechanism, an elevator door blocking mechanism and a signal receiver, wherein the motor is installed on the top of the car, the motor is connected to the elevator door moving mechanism, the elevator door moving mechanism is connected to the first elevator door and the second elevator door, the infrared sensing mechanism is respectively arranged in the first door-collecting groove and the second door-collecting groove, the elevator door blocking mechanism is respectively arranged on both sides of the T-shaped guide rail, and the signal receiver is arranged in the elevator door blocking mechanism. The elevator door anti-pinch device transmits an infrared signal through an infrared signal transmitter, and uses a reflective lens installed in the first door-collecting groove and the second door-collecting groove to reflect the infrared ray, which is finally received by the infrared signal receiver. The infrared signal is blocked, and the signal receiver will receive the signal to pop out the block through the lifting rod to prevent the elevator door from closing, thereby eliminating the hidden danger caused by the closing of the elevator door.

[0004] The device of the above-mentioned existing patent uses an infrared signal transmitter and an infrared signal receiver in conjunction with a reflective lens to form a sensing area, but the reflection of the reflective lens is mirror reflection, and there is a sensing blind area in the infrared reflection area, which poses certain safety hazards. Utility Model Content

[0005] The utility model provides an elevator door anti-pinch device, aiming to solve the problem that the reflection of the reflective lens is mirror reflection, the infrared reflection area has a sensing blind area, and there are certain safety hazards.

[0006] The utility model is implemented as follows: an elevator door anti-pinch device comprises an elevator car, an elevator door and a control panel, wherein the elevator door is symmetrically arranged inside the elevator car, and a control panel is arranged at one end of the elevator car; a safety component is arranged at one end of the elevator door, and the safety component comprises a safety plate, a fixed plate, a connecting block, a connecting rod, a first sensor and a second sensor; three fixed plates are connected to one end of the elevator door, one end of the fixed plate is connected to a connecting rod, one end of the connecting rod is provided with a safety plate, an inner side wall of the safety plate is connected to a connecting block through a spring, one end of the connecting rod passes through the safety plate and is connected to the connecting block, one end of the safety plate and one end of the fixed plate are correspondingly connected to the first sensor, and one end of the two safety plates close to each other are correspondingly connected to the second sensor.

[0007] Preferably, the safety component also includes an infrared transmitter, a reflector and an infrared receiver; one side of one of the elevator doors is connected to an infrared transmitter, one side of the other elevator door is connected to an infrared receiver, and a plurality of reflectors are spaced apart on one side of the two elevator doors.

[0008] Preferably, the infrared emitter and the reflector are both arranged in a staggered manner with respect to the safety plate.

[0009] Preferably, the cross-section of the connecting block is rectangular, and the connecting block fits with the inner wall of the safety plate.

[0010] Preferably, one end of the safety plate is covered with an insulating pad, and one end of the safety plate is provided with a grounding wire.

[0011] Preferably, a buzzer is provided at one end of the elevator car.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] Through the setting of the safety plate, the fixing plate, the connecting block and the connecting rod, in coordination with the setting of the first sensor and the second sensor, mechanical collision sensing of whether there is an object at the elevator entrance is achieved. In coordination with the setting of infrared sensing, double insurance is achieved, the detection sensing blind area is eliminated, the safety and reliability of the device are improved, and accidental injuries are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 yes Figure 2 Schematic diagram of the enlarged area A in FIG.

[0017] In the figure: 1. elevator car; 2. elevator door; 3. safety component; 31. infrared transmitter; 32. reflector; 33. infrared receiver; 34. safety plate; 35. fixing plate; 36. connecting block; 37. connecting rod; 38. first sensor; 39. second sensor; 4. control panel; 5. buzzer. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0019] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] The utility model provides an elevator door anti-pinch device, such as Figure 1-3 As shown, it includes an elevator car 1, an elevator door 2 and a control panel 4, the elevator door 2 is symmetrically arranged inside the elevator car 1, and a control panel 4 is arranged at one end of the elevator car 1; a safety component 3 is arranged at one end of the elevator door 2, and the safety component 3 includes a safety plate 34, a fixed plate 35, a connecting block 36, a connecting rod 37, a first sensor 38 and a second sensor 39; three fixed plates 35 are connected to one end of the elevator door 2, one end of the fixed plate 35 is connected to a connecting rod 37, one end of the connecting rod 37 is provided with a safety plate 34, the inner side wall of the safety plate 34 is connected to a connecting block 36 through a spring, one end of the connecting rod 37 passes through the safety plate 34 and is connected to the connecting block 36, one end of the safety plate 34 and one end of the fixed plate 35 are correspondingly connected to the first sensor 38, and the adjacent ends of the two safety plates 34 are correspondingly connected to the second sensor 39.

[0021] It should be noted that the existing patented equipment uses an infrared signal transmitter and an infrared signal receiver in conjunction with a reflective lens to form a sensing area, but the reflection of the reflective lens is mirror reflection, and there is a sensing blind area in the infrared reflection area, which poses certain safety hazards. This solution achieves dual verification of infrared detection and mechanical collision detection through the setting of safety component 3, eliminates the detection sensing blind area, and improves the safety and reliability of the device.

[0022] Specifically, in this embodiment, the scheme mainly includes an elevator car 1, an elevator door 2, a safety component 3 and a control panel 4. The infrared transmitter 31 and the reflector 32 of the safety component 3 and the infrared receiver 33 are used to form an infrared sensing detection. The safety plate 34 and the first sensor 38 and the second sensor 39 are used to form a mechanical pressure detection. The cross-coverage of the two detection methods is used to eliminate the blind area of ​​the sensing detection and improve the detection sensitivity of the device.

[0023] In a further preferred embodiment of the present invention, Figure 2-3 As shown, the safety component 3 also includes an infrared transmitter 31, a reflector 32 and an infrared receiver 33; one side of one of the elevator doors 2 is connected to the infrared transmitter 31, one side of the other elevator door 2 is connected to the infrared receiver 33, and a plurality of reflectors 32 are arranged at intervals on one side of the two elevator doors 2.

[0024] In this embodiment, the infrared transmitter 31, the reflector 32 and the infrared receiver 33 are arranged to form a repeatedly refracted infrared light curtain. When the infrared receiver 33 cannot receive the infrared signal, it is blocked and the elevator door 2 stops closing. When an object is clamped between the two safety plates 34 by the arrangement of the fixing plate 35, the connecting rod 37 and the connecting block 36, the safety plate 34 is displaced by force. At this time, the safety plate 34 is connected to the first sensor 38 on the fixing plate 35 to form a passage and transmit the signal to the control panel 4. Since the second sensor 39 is not connected, it is judged that there is an object at this time, and the elevator door 2 stops closing. When there is no object in the middle of the safety plate 34, the second sensor 39 and the first sensor 38 are connected at the same time. At this time, it is judged that there is no object and the elevator door 2 closes and runs normally.

[0025] In a further preferred embodiment of the present invention, the infrared emitter 31 and the reflector 32 are both arranged in a staggered manner with respect to the safety plate 34 .

[0026] In this embodiment, the infrared emitter 31, the reflector 32 and the safety plate 34 are arranged in a staggered manner to avoid interference between infrared detection and mechanical detection.

[0027] In a further preferred embodiment of the present invention, the cross section of the connecting block 36 is rectangular, and the connecting block 36 fits closely with the inner wall of the safety plate 34 .

[0028] In this embodiment, the connecting block 36 is arranged in a rectangular shape to avoid the connecting block 36 from being offset and stuck when being adjusted.

[0029] In a further preferred embodiment of the present invention, one end of the safety plate 34 is covered with an insulating pad, and one end of the safety plate 34 is provided with a grounding wire.

[0030] In this embodiment, the insulating pad and the grounding wire are provided to avoid the hidden danger of leakage of the device due to damage of the electrical components.

[0031] In a further preferred embodiment of the present invention, a buzzer 5 is provided at one end of the elevator car 1 .

[0032] In this embodiment, the buzzer 5 is used to provide a warning to the elevator passengers and remind them when they are unaware.

[0033] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0034] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0035] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0036] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. An elevator door anti-pinch device, characterized in that: The invention comprises an elevator car (1), an elevator door (2) and a control panel (4), wherein the elevator door (2) is symmetrically arranged inside the elevator car (1), and the control panel (4) is arranged at one end of the elevator car (1); A safety component (3) is provided at one end of the elevator door (2), and the safety component (3) comprises a safety plate (34), a fixing plate (35), a connecting block (36), a connecting rod (37), a first sensor (38), and a second sensor (39); One end of the elevator door (2) is connected to three fixing plates (35), one end of the fixing plate (35) is connected to a connecting rod (37), one end of the connecting rod (37) is provided with a safety plate (34), the inner side wall of the safety plate (34) is connected to a connecting block (36) via a spring, one end of the connecting rod (37) passes through the safety plate (34) and is connected to the connecting block (36), one end of the safety plate (34) and one end of the fixing plate (35) are connected to a first sensor (38) correspondingly, and two adjacent ends of the safety plates (34) are connected to a second sensor (39) correspondingly.

2. An elevator door anti-pinch device as claimed in claim 1, characterized in that: The safety component (3) further comprises an infrared transmitter (31), a reflector (32) and an infrared receiver (33); One side of one of the elevator doors (2) is connected to an infrared transmitter (31), one side of the other elevator door (2) is connected to an infrared receiver (33), and a plurality of reflectors (32) are arranged at intervals on one side of the two elevator doors (2).

3. An elevator door anti-pinch device as claimed in claim 2, characterized in that: The infrared emitter (31) and the reflector (32) are both arranged in a staggered manner relative to the safety plate (34).

4. An elevator door anti-pinch device as claimed in claim 1, characterized in that: The cross section of the connection block (36) is rectangular, and the connection block (36) fits the inner wall of the safety plate (34).

5. An elevator door anti-pinch device as claimed in claim 1, characterized in that: One end of the safety plate (34) is covered with an insulating pad, and one end of the safety plate (34) is provided with a grounding wire.

6. An elevator door anti-pinch device as claimed in claim 1, characterized in that: A buzzer (5) is provided at one end of the elevator car (1).

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