Elevator car bottom recognition light curtain

Abstract

The utility model relates to an elevator light curtain technology, in particular to an elevator car bottom identification light curtain which is characterized by comprising a light curtain box, one side face, attached to a car wall, of the light curtain box is a back face, an installation structure is arranged on the back face, and the light curtain box is installed on the car wall through the installation structure. The light curtain box is provided with a back face, one face, away from the back face, of the light curtain box is a front face, an open light curtain window is arranged on the front face in the length direction, the light curtain assembly is arranged in the light curtain box, and a light curtain formed by the light curtain assembly penetrates through the light curtain window. According to the light curtain assembly, the light curtain assembly is installed in the light curtain box, the whole light curtain box is directly installed on the inner wall of the lift car in an external mode, and before installation, only a fixing structure matched with the installation structure needs to be arranged at the position, close to the floor, of the inner wall of the lift car. The whole recognition light curtain is installed through the installation structure on the back face of the light curtain box, and the recognition light curtain of the structure is stable in structure, convenient to disassemble and assemble and convenient to maintain fast in the later period.

Description

Technical Field

[0001] This utility model relates to elevator light curtain technology, specifically an elevator car bottom recognition light curtain. Background Technology

[0002] Currently, there is no dedicated car-bottom light curtain for elevator cars. The current method involves creating mounting holes in the lower part of the car wall, installing a support structure inside these holes to hold the light curtain strips, and then fixing the light curtain strips to the support structure. In other words, the light curtain is installed inside the car wall. The advantage is that it avoids the light curtain structure protruding from the car wall, but the disadvantage is that installation and maintenance are cumbersome. For retrofitting older elevators that require car-bottom light curtains, the existing method requires disassembling the entire car wall before drilling holes, fixing the support structure, and installing the light curtain strips. This entire retrofit process is cumbersome, and subsequent maintenance requires disassembling the car wall again, resulting in a large workload and severely impacting elevator operation. Utility Model Content

[0003] The purpose of this utility model is to provide an external elevator car bottom recognition light curtain. The light curtain component of the recognition light curtain is installed in a light curtain box, and the mounting box is directly fixed to the inner wall of the car. Since there is no need to open mounting holes for the light curtain component on the car wall, nor is it necessary to set up a bracket to support the light curtain component inside the car wall, the installation and disassembly of this external elevator car bottom recognition light curtain are more convenient, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an elevator car bottom identification light curtain, including a light curtain box, one side of the light curtain box that is attached to the car wall is the back side, an installation structure is provided on the back side, and the light curtain box is installed on the car wall through the installation structure; the side of the light curtain box that is opposite to the back side is the front side, an open light curtain window is provided on the front side along the length direction, the elevator car bottom identification light curtain also includes a light curtain component disposed in the light curtain box, and the light curtain formed by the light curtain component passes through the light curtain window.

[0005] In the above technical solution, the light curtain component is installed in the light curtain box, and the entire light curtain box is directly installed on the inner wall of the car in an external manner. Before installation, it is only necessary to set a fixing structure that matches the installation structure on the inner wall of the car near the floor. Then, the entire recognition light curtain can be installed through the installation structure on the back of the light curtain box. This type of recognition light curtain is stable, easy to disassemble and assemble, and facilitates quick maintenance in the future.

[0006] As a preferred embodiment, the installation structure includes several mounting holes on the back and mounting bolts that match the mounting holes. By opening screw holes in the car wall and then fixing the light curtain box to the bottom of the car with mounting bolts that pass through the mounting holes, stable installation is ensured.

[0007] As a preferred solution, several operating holes are provided on the front of the light curtain box, facing the mounting holes. These operating holes are designed to allow mounting bolts to pass through, enabling staff to install and remove the bolts. In use, the operating holes can be sealed with plugs, thus both closing the holes and maintaining the overall aesthetics of the light curtain box.

[0008] As a preferred embodiment, the light curtain box has an internal mounting cavity, in which mounting slot I and mounting slot II are provided, wherein mounting slot II is located between mounting slot I and the light curtain window; the light curtain assembly includes a light curtain strip and a circuit board assembly, wherein the circuit board assembly is installed at mounting slot I, and the light curtain strip is installed at mounting slot II and blocks the light curtain window.

[0009] As a preferred embodiment, a clearance slot is provided at one end of the back of the light curtain box. This clearance slot has an opening on the end face of the light curtain box, and the cable connecting the light curtain assembly passes through this cable passage hole. First, by placing the cable passage hole on the back, the cable can directly pass through the pre-set through hole on the car wall after passing through the cable passage hole, avoiding cable exposure. In addition, the wiring terminals of the light curtain assembly are generally located at the end. Compared with a circular hole, this clearance slot at the end of the light curtain box facilitates the direct insertion of the cable.

[0010] As a preferred embodiment, the top of the light curtain box is a top surface that connects the back and the front. This top surface is a slope that gradually decreases from the back to the front. In the usage environment of the car floor, the slope design can effectively prevent trampling and also facilitates cleaning of the top surface.

[0011] As a preferred embodiment, the end cap has an inner insertion part that can be inserted into the light curtain box; an outer positioning hole is provided at the end of the back side, and an inner positioning hole corresponding to the outer positioning hole is provided on the inner insertion part, and a positioning screw matching the inner positioning hole is provided. After the end cap is closed on the end of the light curtain box, the positioning screw is installed in the inner positioning hole. At this time, the nut enters the outer positioning hole, thereby fixing the end cap and preventing the end cap from falling off during use.

[0012] As a preferred solution, a slot is provided on the side of the light curtain box facing the car floor, and a pad is installed in the slot. When installed, the pad is in close contact with the car floor. This can eliminate the gap between the light curtain box and the floor, prevent water stains or dirt from remaining in the gap, and facilitate the cleaning of the car using this external identification light curtain. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1This is a schematic diagram of the overall structure of the elevator car bottom recognition light curtain, which is the first embodiment of this utility model.

[0015] Figure 2 for Figure 1 Schematic diagram of the end face structure of the light box;

[0016] Figure 3 for Figure 2 A schematic diagram of the installation structure of the light curtain assembly in the light curtain box shown.

[0017] Figure 4 This is a schematic diagram of the structure of one end of the light curtain box;

[0018] Figure 5 for Figure 4 A schematic diagram of the back structure of the structure shown;

[0019] Figure 6 for Figure 1 The diagram shows a split structure at one end of the identification light curtain;

[0020] Figure 7 for Figure 6 A schematic diagram of the back structure of the structure shown;

[0021] Figure 8 for Figure 1 The diagram shows the installation status of the identification light curtain at the bottom of the car.

[0022] Figure 9 This is a schematic diagram of the end face structure of the light curtain box in the second type of elevator car bottom recognition light curtain provided by this utility model.

[0023] In the diagram, the components are: 1. Light curtain box; 2. End cap; 3. Light curtain window; 4. Light curtain strip; 5. Hole plug; 6. Circuit board assembly; 7. Cable; 8. Mounting bolt; 101. Back side; 102. Front side; 103. Top surface; 104. Rib plate; 105. Molding cavity; 106. Mounting cavity; 107. Mounting slot I; 108. Mounting slot II; 109. Operating hole; 111. External positioning hole; 112. Clearance slot; 113. Mounting hole; 114. Positioning screw; 23. Internal positioning hole; 21. Internal insertion part; 22. Cable passage hole; 115. Slot; 116. Gasket. Detailed Implementation

[0024] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] Figure 1In one embodiment of this utility model, an elevator car bottom identification light curtain is externally installed on the lower part of the car wall, including a light curtain box 1. In this embodiment, the light curtain box 1 is made of extruded aluminum alloy. Besides aluminum alloy, other rigid materials can also be selected. Figure 1 As can be seen, a light curtain window 3 is set along the entire length of the front of the light curtain box 1, and a light curtain strip 4 (the light curtain strip is made of light-transmitting material) is installed in the light curtain window 3. End caps 2 are installed at both ends of the light curtain box 1. In addition, a hole plug 5 is set on the front of the light curtain box 1. Obviously, the hole plug 5 here is to block the operation hole 109 set on the front of the light curtain box 1.

[0026] like Figure 2 As shown, the light curtain box 1 is extruded, with one side conforming to the car wall as the back side 101 and the side away from the car wall as the front side 102. The upper connecting surface between the back side 101 and the front side 102 is the top surface 103, and the lower connecting surface between the back side 101 and the front side 102 is the bottom surface. Figure 2 As can be seen, the top surface 103 is an arc-shaped slope that gradually decreases from the back surface 101 to the front surface 102. In the usage environment of the elevator car floor, the slope design can effectively prevent trampling. In addition, this design also facilitates cleaning of the top surface 103. The back surface 101 and the front surface 102 are connected by three horizontally arranged ribs 104, so that four molding cavities 105 are formed inside the light curtain box 1. By opening the light curtain window 3 in the front surface 102, one of the cavity 105 in the middle area becomes an open mounting cavity 106. From Figure 2 It can be seen that mounting slot I107 and mounting slot II108 are provided within the mounting cavity 106, with mounting slot II108 located between mounting slot I107 and the light curtain window 3. From Figure 3 As can be seen, the circuit board assembly 6 is installed in the mounting slot I107, and the light curtain strip 4 is installed in the mounting slot II108. The middle part of the light curtain strip 4 protrudes forward and is embedded in the light curtain window 3, thereby sealing the light curtain window 3. The infrared light emitted by the circuit board assembly 6 passes through the light curtain strip 4 and enters the car. Since the light curtain box 1 in this embodiment is produced by extrusion molding, both the mounting slots I107 and II108 are set along the entire length of the light curtain box 1, and the dimensions are consistent throughout. Therefore, the circuit board assembly 6 and the light curtain strip 4 are both inserted into the corresponding mounting slots through one end of the light curtain box 1.

[0027] Combination Figure 4 and Figure 5The plug 5 is detachably installed in the operation hole 109 on the front 102. The mounting hole 113 is provided on the back 101, which is directly opposite to the operation hole 109. Before installing the identification light curtain, bolt holes need to be opened on the car wall near the ground. During installation, the mounting hole 113 is aligned with the bolt hole, and then the mounting bolt 8 is fixed in the bolt hole through the operation hole 109, thereby realizing the installation and fixation of the light curtain box 1. After the installation is completed, the plug 5 is used to seal the operation hole 109 to ensure that debris does not enter the light curtain box 1, and also to ensure the aesthetics of the entire light curtain box 1.

[0028] In addition, from Figure 4 and Figure 5 It can also be seen that a clearance slot 112 is provided at one end of the back surface 101 of the light curtain box 1. The clearance slot 112 has an opening on the end face of the light curtain box 1. At the same time, an external positioning hole 111 is also provided at the end of the back surface 101 of the light curtain box 1. Figure 6 and Figure 7 As can be seen, the wiring terminals on the circuit board assembly 6 are located at the end, therefore the cable 7 is also located at one end of the entire recognition light curtain. In this embodiment, the cable passage hole 22 is set on the back side 101. Firstly, the cable 7 can pass through the cable passage hole 22 and then directly pass through the pre-set through hole on the car wall, avoiding the cable 7 being exposed. Secondly, after the circuit board assembly 6 is installed in place, the cable 7 can be directly inserted into the clearance slot 112 from the opening, which is very convenient. If the clearance slot 112 is set as a circular or other shaped through hole, the cable needs to be passed through, which is relatively troublesome. In this embodiment, the end cover 2 has an inner insertion part 21 for inserting into each molding cavity 105, and on the middle end cover 2 for installation at the end where the clearance slot 112 is located, a cable passage hole 22 for the cable 7 to pass through is provided on the inner insertion part 21 for inserting into the installation cavity 106. Figure 7 As can be seen, the cable passage hole 22 is directly opposite the clearance slot 112. Therefore, during installation, the cable is first passed through the cable passage hole 22, and during the installation of the end cover 2, the cable 7 is automatically inserted into the clearance slot 112, which is very convenient.

[0029] Meanwhile, in order to ensure the installation stability of the end cap 2, an inner positioning hole 23 is provided on the side of the inner insertion part 21 of the end cap 2 that fits against the back surface 101, which is directly opposite to the outer positioning hole 111. After the end cap 2 is correctly installed, the positioning screw 114 is installed in the inner positioning hole 23. At this time, the nut enters the outer positioning hole 111, thereby fixing the end cap 2 and preventing the end cap 2 from falling off during use.

[0030] Figure 8 This diagram illustrates the usage status of the elevator car bottom recognition light curtain with the aforementioned structure. Figure 8As can be seen, the mounting bolt 8 passes through the back panel 101 and is fixed to the car wall, the cable 7 passes through the car wall, and the back panel 101 and the bottom surface are respectively attached to the car wall and the ground. However, in actual use, there may be gaps of varying sizes between the bottom surface of the light curtain box 1 and the ground. These gaps can retain water stains or other dirt, which is not conducive to cleaning inside the car. Therefore, this embodiment also provides a second type of identification light curtain, which is related to... Figure 1 The only difference in the first type of identification light curtain shown is that a padding structure is set on the bottom surface of the light curtain box 1; Figure 9 A schematic diagram of the end face structure of the light curtain box 1 of the second type of identification light curtain is shown. It can be seen that a slot 115 is provided along the entire length of the bottom surface, and a gasket 116 is fitted into the slot 115. In this embodiment, the gasket 116 is made of silicone. In the installed state, the gasket 116 seals at least around the four sides of the bottom surface of the light curtain box 1, thereby preventing water stains and other dirt from entering. Similarly, depending on the usage requirements, a slot 115 can also be provided on the back side 101, and a matching gasket 116 can be provided to eliminate the gap between the light curtain box 1 and the car wall.

[0031] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0032] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0033] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An elevator car bottom recognition light curtain, characterized in that: The system includes a light curtain box, with one side of the light curtain box that is attached to the car wall serving as the back side. An installation structure is provided on this back side, and the light curtain box is installed on the car wall through this installation structure. The side of the light curtain box that is opposite to the back side serves as the front side. An open light curtain window is provided on the front side along the length direction. The elevator car bottom recognition light curtain also includes a light curtain component installed inside the light curtain box, and the light curtain formed by the light curtain component passes through the light curtain window. End caps are installed at both ends of the light curtain box.

2. The elevator car bottom identification light curtain as described in claim 1, characterized in that: The mounting structure includes a plurality of mounting holes on the back side and mounting bolts that match the mounting holes.

3. The elevator car bottom recognition light curtain as described in claim 2, characterized in that: Several operating holes are provided on the front of the light curtain box, which are directly opposite the mounting holes. These operating holes are designed to allow mounting bolts to pass through, and plugs that match the operating holes are provided.

4. The elevator car bottom identification light curtain as described in claim 1, characterized in that: The light curtain box has an internal mounting cavity, which contains mounting slot I and mounting slot II, wherein mounting slot II is located between mounting slot I and the light curtain window; the light curtain assembly includes a light curtain strip and a circuit board assembly, wherein the circuit board assembly is installed at mounting slot I, and the light curtain strip is installed at mounting slot II and blocks the light curtain window.

5. The elevator car bottom identification light curtain as described in claim 1, characterized in that: An avoidance slot is provided at one end of the back of the light curtain box. The avoidance slot has an opening on the end face of the light curtain box, and the cable connecting the light curtain assembly passes through the avoidance slot.

6. The elevator car bottom identification light curtain as described in claim 1, characterized in that: The top of the light curtain box is a top surface that connects the back and front sides, and this top surface is a slope that gradually decreases from the back to the front side.

7. The elevator car bottom identification light curtain as described in any one of claims 1 to 6, characterized in that: The end cap has an inner insertion part that can be inserted into the light curtain box; an outer positioning hole is provided at the end of the back side, and an inner positioning hole corresponding to the outer positioning hole is provided on the inner insertion part, and a positioning screw matching the inner positioning hole is provided.

8. The elevator car bottom identification light curtain as described in any one of claims 1 to 6, characterized in that: A slot is provided on the side of the light curtain box facing the car floor, and a pad is installed in the slot, with the pad tightly against the car floor when installed.

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