Elevator light curtain with switchable induction distance

Abstract

The utility model discloses an elevator light curtain with switchable sensing distance, which comprises a light-emitting main board, a light-emitting power supply module, a light-emitting power supply module and a light-emitting power supply module, the number of the infrared emitters is multiple, the multiple infrared emitters are installed on the light-emitting main board, and the multiple infrared emitters are arranged in a preset direction so that the multiple infrared emitters can be located on the same straight line; the switching unit is electrically connected with the plurality of infrared emitters through a control circuit, a first preset number of infrared emitters form a first infrared emission group, a second preset number of infrared emitters form a second infrared emission group, and the elevator light curtain can improve the use convenience of the elevator light curtain.

Description

Technical Field

[0001] The utility model relates to the technical field of light curtains, in particular to an elevator light curtain with switchable sensing distance. Background Art

[0002] The elevator light curtain is a light-type elevator door safety protection device, which is suitable for passenger elevators and freight elevators to protect the safety of passengers. It consists of four parts: infrared transmitters and receivers installed on both sides of the elevator car door, a power box installed on the top of the car, and a special flexible cable. There are 32 (16) infrared transmitting tubes in the transmitter. Under the control of the MCU, the transmitting and receiving tubes are turned on in sequence, and the car door area is continuously scanned from top to bottom to form a dense infrared protection light curtain. When any beam of light is blocked, the control system immediately outputs a door opening signal, and the car door stops closing and reverses to open. The elevator door can only be closed normally after the passengers or obstacles leave the warning area, thereby achieving the purpose of safety protection, which can avoid the occurrence of elevator pinching accidents.

[0003] In the prior art, it is necessary to customize a light curtain with a corresponding sensing height according to the height of the elevator door, and the elevator needs to be determined according to the design of the elevator shaft of the building. Therefore, each light curtain needs to be designed for a specific elevator, which results in the same light curtain being unable to be used in multiple elevators, which makes the light curtain inconvenient to use. Utility Model Content

[0004] The utility model provides an elevator light curtain with switchable sensing distance, which can improve the convenience of using the elevator light curtain.

[0005] In order to solve the above technical problems, the utility model provides an elevator light curtain with switchable sensing distance, comprising:

[0006] A light-emitting mainboard, on which a light-emitting power supply module is provided;

[0007] Infrared emitters, the number of the infrared emitters is multiple, the multiple infrared emitters are mounted on the light-emitting mainboard, and the multiple infrared emitters are arranged along a preset direction so that the multiple infrared emitters are located on the same straight line;

[0008] A switching unit, wherein the switching unit is electrically connected to the plurality of infrared emitters through a control circuit, a first preset number of the infrared emitters constitute a first infrared emission group, a second preset number of the infrared emitters constitute a second infrared emission group, the infrared emitters of the first infrared emission group are arranged along the preset direction with a first set length, the infrared emitters of the second infrared emission group are arranged along the preset direction with a second set length, the first set length and the second set length are different, the switching unit is used to switch the control circuit so that the control circuit is in a first conduction state and a second conduction state, when the control circuit is in the first conduction state, the first infrared emission group and the light-emitting power supply module are mutually conductive, and when the control circuit is in the second conduction state, the second infrared emission group and the light-emitting power supply module are mutually conductive.

[0009] As a preferred embodiment of the above technical solution, the switching unit is a switching switch.

[0010] As a preferred embodiment of the above technical solution, all of the infrared emitters constitute the first infrared emission group, and a second preset number of infrared emitters located below and continuously constitute the second infrared emission group.

[0011] As a preferred embodiment of the above technical solution, the elevator light curtain with switchable sensing distance also includes a light curtain housing, the switching switch is installed on the light curtain housing, the light curtain housing includes a profile body, the profile body has at least a set length, a first penetration space extending along its length direction is formed on the profile body, and an installation opening interconnected with the first penetration space is also formed on the profile body, the installation opening is used to install a transparent component, a first protrusion and a second protrusion arranged opposite to each other are formed on the inner wall of the first penetration space, the inner side surfaces of the first protrusion and the second protrusion form a clamping space with the inner side surface of the first penetration space, and the clamping space is used to clamp the light-emitting main board.

[0012] As a preferred embodiment of the above technical solution, a clamping opening is formed in the installation opening and on both sides of the installation opening, respectively, and the clamping opening is used to clamp the transparent component.

[0013] As a preferred embodiment of the above technical solution, the clamping opening extends obliquely.

[0014] As a preferred embodiment of the above technical solution, a second penetration space extending along the length direction of the profile body is further formed, and the first penetration space and the second penetration space are arranged parallel to each other.

[0015] As a preferred embodiment of the above technical solution, mounting holes are provided on both sides of the profile body, and the mounting holes extend to the second penetration space.

[0016] As a preferred embodiment of the above technical solution, the distance from the first protrusion to the inner surface is greater than the distance from the second protrusion to the inner surface.

[0017] As a preferred embodiment of the above technical solution, the inner surface of the second protrusion is formed with an arc surface.

[0018] The utility model provides an elevator light curtain with switchable sensing distance, which includes a light-emitting main board, an infrared transmitter and a switching unit. When used specifically, the switching unit can be controlled to switch the control circuit to a first conduction state or a second conduction state according to the height of the elevator door. When the control circuit is in the first conduction state, the first infrared emission group and the light-emitting power supply module are mutually conductive, and when the control circuit is in the second conduction state, the second infrared emission group and the light-emitting power supply module are mutually conductive. Since the infrared transmitters of the first infrared emission group are arranged along a preset direction with a first set length, and the infrared transmitters of the second infrared emission group are arranged along a preset direction with a second set length, the first set length and the second set length are different, and therefore the sensing distance can be switched and controlled by the switching unit to match elevator doors of different heights. The same light curtain can match elevator doors of multiple different heights, thereby improving the convenience of using the light curtain.

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an elevator light curtain with switchable sensing distance according to the present embodiment is shown;

[0021] Figure 2 A schematic diagram showing the arrangement of the first infrared emission group and the second infrared emission group in this embodiment is shown;

[0022] Figure 3 A schematic cross-sectional view of the light curtain housing in this embodiment is shown;

[0023] In the figure: 10, profile body; 101, first penetration space; 102, installation opening; 103, clamping opening; 104, second penetration space; 105, second protrusion; 106, clamping space; 107, spacing space; 108, first protrusion; 109, inner surface; 110, recessed space; 20, light-emitting main board; 30, infrared emitter; 40, light-emitting power supply module; 100, first infrared emission group; 200, second infrared emission group. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 3 , the embodiment of the utility model provides an elevator light curtain with switchable sensing distance, comprising:

[0026] A light-emitting main board 20, on which a light-emitting power supply module 40 is disposed;

[0027] Infrared emitters 30, the number of infrared emitters 30 is multiple, the multiple infrared emitters 30 are mounted on the light-emitting main board 20, and the multiple infrared emitters 30 are arranged along a preset direction so that the multiple infrared emitters 30 are located on the same straight line;

[0028] A switching unit (not shown in the figure), the switching unit is electrically connected to multiple infrared emitters 30 through a control circuit, a first preset number of infrared emitters 30 constitute a first infrared emission group 100, a second preset number of infrared emitters 30 constitute a second infrared emission group 200, the infrared emitters 30 of the first infrared emission group 100 are arranged along a preset direction with a first set length, and the infrared emitters 30 of the second infrared emission group 200 are arranged along a preset direction with a second set length, the first set length and the second set length are different, the switching unit is used to switch the control circuit so that the control circuit is in a first conduction state and a second conduction state, when the control circuit is in the first conduction state, the first infrared emission group 100 and the light-emitting power supply module 40 are mutually conductive, and when the control circuit is in the second conduction state, the second infrared emission group 200 and the light-emitting power supply module 40 are mutually conductive.

[0029] The present embodiment provides an elevator light curtain with switchable sensing distance, which includes a light-emitting main board 20, an infrared emitter 30 and a switching unit. When used specifically, the switching unit can be controlled to switch the control circuit to a first conduction state or a second conduction state according to the height of the elevator door. When the control circuit is in the first conduction state, the first infrared emission group 100 and the light-emitting power supply module 40 are mutually conductive, and when the control circuit is in the second conduction state, the second infrared emission group 200 and the light-emitting power supply module 40 are mutually conductive. Since the infrared emitters 30 of the first infrared emission group 100 are arranged along a preset direction with a first set length, and the infrared emitters 30 of the second infrared emission group 200 are arranged along a preset direction with a second set length, the first set length and the second set length are different, and the infrared emitter 30 can only work when it is in the conduction state. Therefore, it can switch and control its sensing distance through the switching unit to match elevator doors of different heights. The same light curtain can match elevator doors of multiple different heights, thereby improving the convenience of using the light curtain.

[0030] In a further feasible embodiment of this embodiment, the switching unit is a switching switch.

[0031] See also Figure 2 In a further implementable embodiment of the present invention, all infrared emitters 30 constitute a first infrared emission group 100 , and a second preset number of infrared emitters 30 located below and continuously constitute a second infrared emission group 200 .

[0032] Of course, it can also have more combinations to form multiple infrared emission groups to match different usage scenarios.

[0033] In a further implementable embodiment of the present embodiment, the elevator light curtain whose sensing distance can be switched also includes a light curtain housing, the switching switch is installed on the light curtain housing, the light curtain housing includes a profile body 10, the profile body 10 has at least a set length, and a first penetration space 101 extending along its length direction is formed on the profile body 10, and an installation opening 102 interconnected with the first penetration space 101 is also formed on the profile body 10, and the installation opening 102 is used to install a transparent component, and a first protrusion 108 and a second protrusion 105 arranged opposite to each other are formed on the inner wall of the first penetration space 101, and the inner side surfaces of the first protrusion 108 and the second protrusion 105 and the inner side surface 109 of the first penetration space 101 form a clamping space 106, and the clamping space 106 is used to clamp the light-emitting main board.

[0034] The switch in this embodiment is installed on the light curtain housing for easier operation.

[0035] In this embodiment, the profile body 10 is formed with a first penetration space 101 extending along its length direction, and an installation opening 102 interconnected with the first penetration space 101 is provided on the profile body 10, and the light-transmitting component is arranged in the installation opening 102. The light-transmitting component can play a protective role. In addition, it can realize the light-transmitting effect. The light-emitting main board is installed in the clamping space 106 formed by the first protrusion 108 and the second protrusion 105 by clamping, and is clamped on the side of the first penetration space 101, which can make the installation of the light-emitting main board more convenient and improve the convenience of assembling the light curtain.

[0036] In a further implementable embodiment of the present invention, a clamping opening 103 is formed in the installation opening 102 and on both sides of the installation opening 102 , respectively. The clamping opening 103 is used to clamp the transparent component.

[0037] The mounting opening 103 in this embodiment is used to mount the transparent component, which can facilitate the installation of the transparent component.

[0038] In a further possible implementation of this embodiment, the clamping opening 103 extends obliquely.

[0039] The clamping opening 103 in this embodiment extends obliquely, and after the transparent component is opened, the transparent component can be curved as a whole, thereby improving the divergence direction of light.

[0040] In a further possible implementation of this embodiment, a second penetration space 104 extending along the length direction of the profile body 10 is further formed, and the first penetration space 101 and the second penetration space 104 are arranged parallel to each other.

[0041] In a further feasible embodiment of the present invention, mounting holes (not shown in the figure) are provided on both sides of the profile body 10 , and the mounting holes extend to the second penetration space 104 .

[0042] The mounting holes in this embodiment can be used for installing fasteners, thereby improving the convenience of installation.

[0043] In a further embodiment of the present invention, the distance from the first protrusion 108 to the inner surface 109 is greater than the distance from the second protrusion 105 to the inner surface 109 .

[0044] In this embodiment, the first protrusion 108 and the second protrusion 105 are arranged at positions that prevent the emission of light.

[0045] In a further embodiment of the present invention, the inner surface 109 of the second protrusion 105 is formed with an arc surface.

[0046] In this embodiment, the inner surface 109 of the second protrusion 105 is formed with an arc surface to prevent light from being blocked.

[0047] In a further feasible embodiment of the present invention, a spacing space 107 is further formed between the locking space 106 and the inner surface 109 .

[0048] In a further embodiment of the present invention, a downward recessed space 110 is formed on the outer surface of the profile body 10 .

[0049] In a further possible implementation of this embodiment, the cross section of the profile body 10 is rectangular.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An elevator light curtain with switchable sensing distance, characterized in that: include: A light-emitting mainboard, on which a light-emitting power supply module is provided; Infrared emitters, the number of the infrared emitters is multiple, the multiple infrared emitters are mounted on the light-emitting mainboard, and the multiple infrared emitters are arranged along a preset direction so that the multiple infrared emitters are located on the same straight line; A switching unit, wherein the switching unit is electrically connected to the plurality of infrared emitters through a control circuit, a first preset number of the infrared emitters constitute a first infrared emission group, a second preset number of the infrared emitters constitute a second infrared emission group, the infrared emitters of the first infrared emission group are arranged along the preset direction with a first set length, the infrared emitters of the second infrared emission group are arranged along the preset direction with a second set length, the first set length and the second set length are different, the switching unit is used to switch the control circuit so that the control circuit is in a first conduction state and a second conduction state, when the control circuit is in the first conduction state, the first infrared emission group and the light-emitting power supply module are mutually conductive, and when the control circuit is in the second conduction state, the second infrared emission group and the light-emitting power supply module are mutually conductive.

2. The elevator light curtain with switchable sensing distance according to claim 1, characterized in that: The switching unit is a switching switch.

3. The elevator light curtain with switchable sensing distance according to claim 1, characterized in that: All of the infrared emitters constitute the first infrared emission group, and a second preset number of the infrared emitters located below and continuously constitute the second infrared emission group.

4. The elevator light curtain with switchable sensing distance according to claim 2, characterized in that: The elevator light curtain with switchable sensing distance also includes a light curtain shell, the switching switch is installed on the light curtain shell, the light curtain shell includes a profile body, the profile body has at least a set length, a first penetration space extending along the length direction is formed on the profile body, and a mounting opening interconnected with the first penetration space is also formed on the profile body, the mounting opening is used to install a transparent component, a first protrusion and a second protrusion arranged opposite to each other are formed on the inner wall of the first penetration space, the inner side surfaces of the first protrusion and the second protrusion form a clamping space with the inner side surface of the first penetration space, and the clamping space is used to clamp the light-emitting main board.

5. The elevator light curtain with switchable sensing distance according to claim 4 is characterized in that: The installation opening is provided with clamping openings at both sides of the installation opening, and the clamping openings are used for clamping the transparent component.

6. The elevator light curtain with switchable sensing distance according to claim 5, characterized in that: The clamping opening extends obliquely.

7. The elevator light curtain with switchable sensing distance according to claim 4, characterized in that: The profile body is also formed with a second penetration space extending along the length direction thereof, and the first penetration space and the second penetration space are arranged parallel to each other.

8. The elevator light curtain with switchable sensing distance according to claim 7, characterized in that: Mounting holes are arranged on both sides of the profile body, and the mounting holes extend to the second penetration space.

9. The elevator light curtain with switchable sensing distance according to claim 4, characterized in that: The distance from the first protrusion to the inner surface is greater than the distance from the second protrusion to the inner surface.

10. The elevator light curtain with switchable sensing distance according to claim 9, characterized in that: An inner surface of the second protrusion is formed with an arc surface.

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