Elevator light curtain with safety protection detection function

Abstract

The utility model relates to the technical field of elevator light curtains, in particular to an elevator light curtain with safety protection detection, which comprises an elevator door body, and one side of the inner wall of the elevator door body is fixedly connected with a mounting seat. According to the utility model, by arranging the connecting spring, the mounting plate, the light curtain body, the guide assembly, the detection seat, the push switches and other parts, the mounting plate and the light curtain body can be pushed by collision force to move backwards at the same time after collision, and the mounting plate can extrude the corresponding push switch and transmit a signal to the signal generator; the signal generator is connected with a property management terminal for prompting, so that a maintainer can know the position change of the light curtain at the first time and does not need to know when the light curtain has an obvious detection fault or passengers feed back abnormal operation of the elevator, inspection and maintenance can be intervened as early as possible, potential safety hazards can be positioned more efficiently, and the working efficiency of the maintainer is improved. The protection effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of elevator light curtains, and in particular to an elevator light curtain with safety protection detection. Background Technology

[0002] An elevator light curtain is an important safety protection device installed between elevator car doors to ensure the safe operation of the elevator and prevent people and objects from being trapped. It mainly consists of an infrared transmitter, an infrared receiver, a control unit, and corresponding connecting cables. The infrared transmitter usually contains multiple infrared emitting tubes arranged in a straight line and is installed on one side of the elevator car door. Correspondingly, the infrared receiver is installed on the other side of the car door and is also equipped with multiple receiving tubes that correspond one-to-one with the emitting tubes. They are connected to the control unit through a dedicated cable.

[0003] A search revealed Chinese patent application CN202123235189.7, which discloses an elevator light curtain with safety protection detection. The elevator includes a car with a door on the front. A door mechanism for controlling the opening and closing of the car door is connected to the top of the door. The car door has two panels, with a left side frame and a right side frame on opposite sides. A complete set of lower light curtain transmitters and receivers installed in the car door detects whether a person is entering or exiting the elevator. An upper light curtain transmitter and receiver detect the height of people entering or exiting the elevator. Combined with image acquisition of the elevator's interior, the number of people inside is determined, and a comprehensive assessment is made to determine if a child is riding alone in the elevator. If the elevator determines that a child is riding alone, it controls a locking mechanism to keep the car door open and the elevator stops operating; otherwise, the elevator operates normally. This effectively prevents accidents caused by children riding elevators without adult supervision, ensuring their safety.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: During use, in periods of high frequency and congestion when people are entering and exiting elevators, such as rush hour, passengers often rush in and out of the elevator car, and their bodies, arms, shoulders, etc., may inadvertently bump into the vicinity of the elevator car door. The light curtain is installed in this area and is easily affected. When moving large or irregularly shaped items into and out of the elevator, the person carrying the items may have an obstructed view and find it difficult to accurately control the distance between the items and the car door, making it easy for the items to touch the light curtain. Moreover, during the placement and movement of these items, it is also easy for them to collide with the light curtain due to careless operation. Collisions with the light curtain are quite common when moving furniture or large packages. When the light curtain is collided with, the displacement may not be detected in time, and it may continue to be in an abnormal working state in subsequent operation. Its detection function will gradually be affected. For example, the misalignment of the transmitter and receiver caused by displacement will become more and more serious, leading to obstructed light transmission or more misjudgments, which will increase the probability of safety accidents such as people or objects being trapped in the elevator. Utility Model Content

[0005] To address the problems mentioned in the background section, this application provides an elevator light curtain with safety protection detection.

[0006] This application provides an elevator light curtain with safety protection detection, which adopts the following technical solution: it includes an elevator door body, a mounting base is fixedly connected to one side of the inner wall of the elevator door body, a plurality of connecting springs are fixedly connected to one side of the mounting base, a mounting plate is fixedly connected to one end of the plurality of connecting springs, a light curtain body is provided on one side of the mounting plate, and a guide component is provided between the mounting plate and the mounting base.

[0007] Two detection seats are fixedly connected to one side of the inner wall of the elevator door body. A push switch that cooperates with the mounting plate is fixedly connected to one side of the two detection seats. A cleaning mechanism is fixedly connected to the other side of the inner wall of the elevator door body. A signal generator that cooperates with the two push switches is fixedly connected to one side of the inner wall of the elevator door body.

[0008] Optionally, the guide assembly includes two guide grooves formed on one side of the mounting base and two guide blocks fixedly connected to one side of the mounting plate, with the two guide blocks slidably fitted on the inner walls of the two guide grooves.

[0009] Optionally, the cleaning mechanism includes an air pump fixedly connected to the other side of the inner wall of the elevator door body, a hollow plate fixedly connected to the output end of the air pump, and an air outlet opened on one side of the hollow plate.

[0010] Optionally, a limiting plate is fixedly connected to one side of each of the two detection seats, and a buffer plate is fixedly connected to one side of the limiting plate.

[0011] Optionally, a light strip is fixedly connected to one side of the mounting plate, and a force switch that cooperates with the light strip is fixedly connected to another side of the mounting plate.

[0012] Optionally, connecting blocks are fixedly connected to both sides of the mounting plate and the light curtain body, and threaded holes are opened on one side of the connecting blocks, with tightening bolts provided on the inner wall of the threaded holes.

[0013] Optionally, a soft block is fixedly connected to one side of the mounting plate, and a buffer pad is fixedly connected to one side of each of the two push switches.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] This invention, by incorporating components such as a connecting spring, mounting plate, light curtain body, guide assembly, detection seat, and push switch, enables the installation to achieve the following: upon impact, the impact force pushes the mounting plate and light curtain body backward simultaneously. The mounting plate then compresses the corresponding push switch. Once the compression signal is transmitted, it is sent to a signal generator, which connects to the property management's terminal for notification. This allows maintenance personnel to be immediately aware of the light curtain's positional change, rather than waiting for obvious detection failures or passenger reports of elevator malfunctions. This allows for earlier intervention and maintenance, more efficient identification of potential safety hazards, and improved protection effectiveness.

[0016] This invention, by setting up a cleaning mechanism, allows gas to be injected into the hollow plate by activating an air pump after a certain period of use. The compressed gas is then ejected from the corresponding air outlet, cleaning the detection end of the light curtain body, blowing away dust from the surface of the light curtain, keeping it clean, ensuring that light can be transmitted and received normally, and maintaining the accuracy of light curtain detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0018] Figure 2 This is an embodiment of the present application. Figure 1 Enlarged structural diagram at point A;

[0019] Figure 3 This is a structural schematic diagram of the three-dimensional cross-section of the elevator door body in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the three-dimensional cross-section of the detection seat in an embodiment of this application.

[0021] Reference numerals: 1. Elevator door body; 2. Mounting base; 3. Connecting spring; 4. Mounting plate; 5. Light curtain body; 6. Guide assembly; 601. Guide groove; 602. Guide block; 7. Detection seat; 8. Press switch; 9. Cleaning mechanism; 901. Air pump; 902. Hollow plate; 903. Air outlet; 10. Signal generator; 11. Limiting plate; 12. Buffer plate; 13. Light strip; 14. Force switch; 15. Connecting block; 16. Threaded hole; 17. Tightening bolt; 18. Soft block; 19. Buffer pad. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 —4. This application will be described in further detail.

[0023] This application discloses an elevator light curtain with safety protection detection. For example... Figure 1-4 As shown, the elevator includes an elevator door body 1. A mounting base 2 is fixedly connected to one side of the inner wall of the elevator door body 1. Multiple connecting springs 3 are fixedly connected to one side of the mounting base 2. A mounting plate 4 is fixedly connected to one end of the multiple connecting springs 3.

[0024] Please see Figure 4 A light strip 13 is fixedly connected to one side of the mounting plate 4, and a force switch 14 that cooperates with the light strip 13 is fixedly connected to one side of the mounting plate 4. When closed, the force switch 14 is squeezed, which is the closing operation. When the elevator door body 1 is opened, the force switch 14 is no longer squeezed, so the light strip 13 can be turned on to remind passersby of the position of the light curtain body 5.

[0025] Please see Figure 2 Both sides of the mounting plate 4 and the light curtain body 5 are fixedly connected to connecting blocks 15. Each side of the connecting block 15 is provided with a threaded hole 16. The inner wall of the threaded hole 16 is provided with a tightening bolt 17. By rotating the tightening bolt 17, the light curtain body 5 can be disassembled from the threaded hole 16 on the two connecting blocks 15, thereby improving the convenience of subsequent disassembly and maintenance.

[0026] Please see Figure 4 A soft block 18 is fixedly connected to one side of the mounting plate 4, and a buffer pad 19 is fixedly connected to one side of each of the two push switches 8. When the mounting plate 4 is squeezed, the buffer pad 19 will be squeezed between the soft block 18, which can buffer the instantaneous impact force and reduce noise.

[0027] A light curtain body 5 is provided on one side of the mounting plate 4, and a guide component 6 is provided between the mounting plate 4 and the mounting base 2.

[0028] Please see Figure 2The guide component 6 includes two guide grooves 601 formed on one side of the mounting base 2 and two guide blocks 602 fixedly connected to one side of the mounting plate 4. The two guide blocks 602 are slidably fitted on the inner walls of the two guide grooves 601. When squeezed, the guide blocks 602 can be limited in the guide grooves 601. When the elevator door body 1 is in operation, the position of the light curtain body 5 remains unchanged and will not be affected by vibration.

[0029] Please see Figure 4 Each of the two detection seats 7 has a limiting plate 11 fixedly connected to one side, and a buffer plate 12 is fixedly connected to one side of the limiting plate 11. When the mounting plate 4 is impacted by an external force and the press switch 8 is squeezed, the limiting plate 11 will intervene to exert force after a certain degree of squeezing, so that the external force will not squeeze to the limit of the press switch 8, thereby protecting the press switch 8.

[0030] Two detection seats 7 are fixedly connected to one side of the inner wall of the elevator door body 1. A push switch 8 that cooperates with the mounting plate 4 is fixedly connected to one side of the two detection seats 7. A cleaning mechanism 9 is fixedly connected to the other side of the inner wall of the elevator door body 1. A signal generator 10 that cooperates with the two push switches 8 is fixedly connected to one side of the inner wall of the elevator door body 1.

[0031] Please see Figure 2 The cleaning mechanism 9 includes an air pump 901 fixedly connected to the other side of the inner wall of the elevator door body 1, a hollow plate 902 fixedly connected to the output end of the air pump 901, and an air outlet 903 opened on one side of the hollow plate 902. By starting the air pump 901, gas is injected into the hollow plate 902, and the compressed gas is sprayed out from the corresponding air outlet 903 to clean the detection end of the light curtain body 5, blow away the dust on the surface of the light curtain, keep it clean, ensure that the light can be transmitted and received normally, and maintain the accuracy of the light curtain detection.

[0032] The implementation principle of an elevator light curtain with safety protection detection in this application embodiment is as follows: When in use, when the elevator door body 1 is opened, the light curtain body 5 detects objects. When the light curtain body 5 is hit, the guide block 602 will move backward in the corresponding guide groove 601, pushing the mounting plate 4 and the light curtain body 5 to move backward at the same time. The mounting plate 4 will squeeze the corresponding push switch 8. Once the squeeze signal is transmitted to the signal generator 10, the signal generator 10 will connect to the property terminal for prompting, so that maintenance personnel can know that the position of the light curtain has changed immediately, without having to wait for the light curtain to have obvious detection failure or passengers to report abnormal elevator operation. This allows for early intervention for inspection and maintenance, more efficient location of potential safety hazards, and improved protection effect.

[0033] After a certain period of use, gas can be injected into the hollow plate 902 by starting the air pump 901. The compressed gas is then ejected from the corresponding air outlet 903 to clean the detection end of the light curtain body 5, blowing away the dust on the surface of the light curtain to keep it clean, ensuring that the light can be transmitted and received normally, and maintaining the accuracy of the light curtain detection.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An elevator light curtain with safety protection detection, comprising an elevator door body (1), characterized in that: A mounting base (2) is fixedly connected to one side of the inner wall of the elevator door body (1). Multiple connecting springs (3) are fixedly connected to one side of the mounting base (2). A mounting plate (4) is fixedly connected to one end of the multiple connecting springs (3). A light curtain body (5) is provided on one side of the mounting plate (4). A guide component (6) is provided between the mounting plate (4) and the mounting base (2). Two detection seats (7) are fixedly connected to one side of the inner wall of the elevator door body (1). A push switch (8) that cooperates with the mounting plate (4) is fixedly connected to one side of the two detection seats (7). A cleaning mechanism (9) is fixedly connected to the other side of the inner wall of the elevator door body (1). A signal generator (10) that cooperates with the two push switches (8) is fixedly connected to one side of the inner wall of the elevator door body (1).

2. The elevator light curtain with safety protection detection according to claim 1, characterized in that: The guide assembly (6) includes two guide grooves (601) formed on one side of the mounting base (2) and two guide blocks (602) fixedly connected to one side of the mounting plate (4). The two guide blocks (602) are slidably fitted on the inner wall of the two guide grooves (601).

3. The elevator light curtain with safety protection detection according to claim 1, characterized in that: The cleaning mechanism (9) includes an air pump (901) fixedly connected to the other side of the inner wall of the elevator door body (1), a hollow plate (902) fixedly connected to the output end of the air pump (901), and an air outlet (903) opened on one side of the hollow plate (902).

4. The elevator light curtain with safety protection detection according to claim 1, characterized in that: Each of the two detection seats (7) is fixedly connected to a limiting plate (11) on one side, and a buffer plate (12) is fixedly connected to one side of the limiting plate (11).

5. An elevator light curtain with safety protection detection according to claim 1, characterized in that: A light strip (13) is fixedly connected to one side of the mounting plate (4), and a force switch (14) that cooperates with the light strip (13) is fixedly connected to one side of the mounting plate (4).

6. An elevator light curtain with safety protection detection according to claim 1, characterized in that: Both sides of the mounting plate (4) and the light curtain body (5) are fixedly connected to connecting blocks (15), and threaded holes (16) are opened on one side of the connecting blocks (15), and tightening bolts (17) are provided on the inner wall of the threaded holes (16).

7. An elevator light curtain with safety protection detection according to claim 1, characterized in that: A soft block (18) is fixedly connected to one side of the mounting plate (4), and a buffer pad (19) is fixedly connected to one side of each of the two push switches (8).

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