Light curtain

Abstract

The utility model discloses a light curtain and relates to the field of elevators, the light curtain comprises a first shell and a second shell, the first shell and the second shell are completely the same in structure, one end of the first shell is sleeved with a plug male sleeve, and one end of the second shell is sleeved with a plug female sleeve fixed to the plug male sleeve in a plug mode; the middle parts of the plugging male sleeve and the plugging female sleeve are fixedly provided with sockets in a plugging manner. A conductive PCB is movably plugged between the two sockets. The first shell and the second shell are connected through the male plug sleeve and the female plug sleeve through the PCB to form the whole elevator light curtain, and then light curtains of various lengths are spliced. In conclusion, the device can be disassembled into a plurality of devices, the total length is reduced, the device can be customized according to actual needs, meanwhile, the device is short and convenient to transport and carry, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] This application relates to the field of elevators, and more particularly to a light curtain. Background Technology

[0002] An elevator light curtain, also known as a hazard prevention device, is designed to protect the safety of passengers entering and exiting elevators. It uses a dense infrared protective light curtain composed of infrared transmitters and receivers to monitor the elevator door area in real time for obstructions, thereby preventing accidents where passengers are trapped in the elevator.

[0003] The elevator light curtains currently used on the market are all-in-one elevator light curtains, with a length of basically between 1.8 meters and 3 meters. Due to the relatively long length of the light curtain, it is not very convenient to transport. It is easily squeezed and bent during transportation, and it is also very inconvenient to carry. Utility Model Content

[0004] To address the issues of inconvenience in transportation and carrying, this application provides a light curtain.

[0005] The light curtain provided in this application adopts the following technical solution:

[0006] A light curtain includes a first outer shell and a second outer shell, the first outer shell and the second outer shell having the same structure. One end of the first outer shell is fitted with a male plug sleeve, and one end of the second outer shell is fitted with a female plug sleeve that is plugged and fixed to the male plug sleeve.

[0007] Both the male and female sockets are fixedly connected to a socket in the middle, and a conductive PCB board is movably connected between the two sockets.

[0008] The male and female plug-in sleeves are connected to the outer shell 1 and outer shell 2 via a PCB board to form an elevator light curtain as a whole, which can then be spliced ​​into light curtains of various lengths.

[0009] By adopting the above technical solution, the outer shell 1 and outer shell 2 can be connected and fixed through the insertion of female and male sleeves, and can then be spliced ​​into different lengths as needed. At the same time, this device can be disassembled into several units to reduce the overall length, and can be customized according to actual needs. In addition, the shorter length makes it convenient to transport and carry, greatly improving the practicality of the device.

[0010] Preferably, a metal spring is fixed in the slot inside the socket, and one end of the metal spring protrudes.

[0011] By adopting the above technical solution, the metal spring becomes conductive and has its own elasticity, thus it can be well pressed against the copper sheet.

[0012] Preferably, copper sheets are embedded and fixed on both sides of the PCB board to achieve electrical connection with metal springs.

[0013] By adopting the above technical solution, the PCB board itself has rigidity, which can play a role in connecting and resisting radial forces. At the same time, the copper sheet can allow current to pass through and form a loop.

[0014] Preferably, a connecting plate is fixed on one side of both the male and female plug-in sleeves, and a second limiting plate is fixed on the other side opposite to the connecting plate. Several first limiting plates for limiting are fixed on one side of both the male and female plug-in sleeves at a position perpendicular to the second limiting plate.

[0015] By adopting the above technical solution, the connecting plate and the limiting plate can increase the frictional resistance between the outer shell and the outer shell, preventing it from falling off. The limiting plate can provide support while also achieving a sealing effect.

[0016] Preferably, the opening on one side of the outer casing is provided with a side slot for inserting a plastic plate, and the side slot is provided with a notch on the side of the insertion male sleeve for inserting a limiting plate.

[0017] By adopting the above technical solution, the side slot and the plastic plate are perfectly matched to achieve a seal, and at the same time, the notch can accommodate the second limiting plate.

[0018] Preferably, the inner cavities of both the outer casing one and the outer casing two are fixed with sensor assemblies electrically connected to the metal spring.

[0019] By adopting the above technical solution, the sensor assembly becomes the core component of the elevator light curtain. The existing structure can be used. However, it should be noted that the length of the light curtain is shortened, so the length of each sensor assembly is also shortened. The electrical connection is achieved through metal spring contacts.

[0020] Preferably, the outer casing has an ear plate fixed on one side of the plastic plate, and the ear plate has a plurality of mounting grooves that are connected to the elevator door by bolts.

[0021] By adopting the above technical solution, the ear plate can be installed in close fit with the structure of the elevator door and then fixed with bolts.

[0022] Preferably, a connector for connection, fixation and sealing is provided between the first outer shell and the second outer shell. A pin is fixed in the middle of the connector, and pins are fixed at both ends of the pin. Both the first outer shell and the second outer shell have female connectors that are inserted and fixed inside to achieve electrical connection with the pins.

[0023] By adopting the above technical solution, the pin is inserted into the female connector to achieve a hard connection and achieve a conductive effect.

[0024] Preferably, the inner sides of the first and second outer shells are provided with inner slots for the motherboard to be inserted and fixed, and the motherboard is electrically connected to the female connector.

[0025] By adopting the above technical solution, the inner slot can fix the motherboard, which is equipped with various electronic components to enable the elevator light curtain to function properly.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] The male and female connectors are installed at one end of housing one or housing two, and then the male and female connectors are plugged in and fixed. The PCB board can achieve the effect of connection and fixation as well as power transmission, so that short elevator light curtains can be spliced ​​together to form a longer elevator light curtain. This device can be disassembled into several units to reduce the overall length. It can be customized according to actual needs. At the same time, the short length makes it convenient to transport and carry, which greatly improves the practicality of the device. Attached Figure Description

[0028] Figure 1 This is an overall isometric schematic diagram of Embodiment 1 of this application;

[0029] Figure 2 This is a schematic diagram showing the separation of the female connector, male connector, and PCB board in Embodiment 1 of this application;

[0030] Figure 3 This is an exploded view of Embodiment 1 of this application;

[0031] Figure 4 This is a schematic diagram of the plug-in female sleeve structure according to Embodiment 1 of this application;

[0032] Figure 5 This is an overall isometric schematic diagram of Embodiment 2 of this application;

[0033] Figure 6 This is an exploded view of Embodiment 2 of this application.

[0034] Reference numerals: 1. Outer shell one; 2. Outer shell two;

[0035] 31. Insertion female sleeve; 32. Recess; 33. Connecting plate; 34. Limiting plate one; 35. Limiting plate two;

[0036] 41. Insert male socket; 42. Protrusion;

[0037] 5. Plastic sheet; 6. Ear plate; 7. Mounting slot;

[0038] 8. PCB board; 81. Copper sheet;

[0039] 9. Socket; 91. Metal spring;

[0040] 10. Sensor assembly; 11. Notch; 12. Side slot; 13. Internal slot;

[0041] 14. Motherboard; 141. Female connector;

[0042] 15. Connector; 151. Mounting plate; 152. Pin inserter; 153. Pin. Detailed Implementation

[0043] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0044] This application discloses a light curtain.

[0045] Example 1

[0046] Reference Figure 1 , Figure 2 A light curtain includes a first outer shell 1 and a second outer shell 2. The structures of the first outer shell 1 and the second outer shell 2 are the same as those of existing elevator light curtains. The structures of the first outer shell 1 and the second outer shell 2 are completely identical. One end of the first outer shell 1 is sleeved and fixed to one end of a male insert sleeve 41, and one end of the second outer shell 2 is sleeved and fixed to one end of a female insert sleeve 31. The other end of the female insert sleeve 31 is provided with a recess 32. The side of the male insert sleeve 41 facing the female insert sleeve 31 is provided with a protrusion 42. The protrusion 42 is inserted into the recess 32 and provides radial support. At the same time, the ends of the protrusion 42 are all rounded. Both one side of the male insert sleeve 41 and one side of the female insert sleeve 31 are rounded. One end of the connecting plate 33 is fixedly connected to the other side of the male sleeve 41 and the other side of the female sleeve 31, which are respectively fixed to the connecting plate 33. The length of the second limiting plate 35 is less than the length of the connecting plate 33. The middle of the male sleeve 41 and the female sleeve 31 is provided with a notch for installing the socket 9. Several limiting plates 34 for limiting are fixed on one side of the male sleeve 41 and the female sleeve 31. The several limiting plates 34 are of different lengths, and the surface of the first limiting plate 34 contacts the inner wall of the outer shell 1 and the outer shell 2 respectively and generates frictional resistance. The first limiting plate 34 and the second limiting plate 35 are perpendicular to each other.

[0047] When assembling the outer shell 1 and the outer shell 2, the installer first places the male connector 41 on the outside of the outer shell 1. At this time, the connecting plate 33 and several limiting plates 34 are inserted into the inner wall of the outer shell 1 and encounter resistance until one end of the inner wall of the male connector 41 abuts against the end of the outer shell 1. At the same time, the limiting plate 35 is inserted into the side of the outer shell 1 located on the plastic plate 5 and abuts against one end of the plastic plate 5. The method of installing the female connector 31 on the outer shell 2 is the same as the method of installing the male connector 41 on the outer shell 1. Then, the protrusion 42 at one end of the male connector 41 is inserted into the recess 32 of the female connector 31, thus achieving the splicing and fixing of the outer shell 1 and the outer shell 2.

[0048] Reference Figures 1-3 The outer casing 1 has an opening on one side, and a side slot 12 is provided at the opening. A plastic plate 5 is inserted into the side slot 12. A notch 11 is provided on the side of the side slot 12 located on the side of the male fitting 41. One end of the limiting plate 35 is inserted into the notch 11. An ear plate 6 is fixed on the side of the outer casing 1 located on the side of the plastic plate 5. One side of the ear plate 6 is flush with the surface of the outer casing 1. Several mounting slots 7 are provided on the ear plate 6. The several mounting slots 7 are connected and fixed to the elevator door by bolts.

[0049] The user inserts one end of the plastic plate 5 into the side slot 12 and makes one end of the plastic plate 5 abut against one end of the limiting plate 35. When the outer shell 1 and the outer shell 2 are spliced ​​to the appropriate length, the user inserts the bolt into the mounting slot 7 and fixes the bolt to the elevator door thread, thereby fixing the outer shell 1 and the outer shell 2, which is to fix the elevator light curtain.

[0050] Reference Figure 2 , Figure 3 A socket 9 is fixedly inserted into both the notch of the male socket 41 and the notch of the female socket 31. The end of the socket 9 of the female socket 31 is flush with the bottom of the recess 32, and the end of the socket 9 of the male socket 41 is flush with the end of the protrusion 42. A conductive PCB board 8 is movably inserted between the two sockets 9. Both ends of the PCB board 8 are inserted into the sockets 9 of the male socket 41 and the sockets 9 of the female socket 31. The socket 9 has several slots inside, and a metal spring 91 is fixed in each slot inside the socket 9. One end of several metal springs 91 is connected together to form a general terminal. One end of the metal spring 91 protrudes. Copper pieces 81 are embedded and fixed on both sides of the PCB board 8. The copper pieces 81 correspond to and abut against the metal springs 91 to achieve electrical connection.

[0051] During assembly, the user inserts one end of the PCB board 8 into the socket 9 of the male connector 41. Then, the user picks up the outer casing 2 with the other hand and aligns the socket 9 of the female connector 31 with the exposed end of the PCB board 8 and inserts it forcefully, thereby achieving electrical connection between the outer casing 2 and the sensor assembly 10 inside the outer casing 1, and thus enabling normal operation.

[0052] Reference Figure 1 The male socket 41 and the female socket 31 are connected through the PCB board 8 to form the elevator light curtain as a whole, and then spliced ​​into light curtains of various lengths. The lengths of the outer shell 1 and the outer shell 2 can be preset to various lengths such as 0.5m and 1m. The inner cavity of the outer shell 1 and the outer shell 2 is fixed with a sensor assembly 10. The sensor assembly 10 is set as the transmitter and receiver. The connection end of the sensor assembly 10 is electrically connected to the metal spring 91.

[0053] The sensor assembly 10 is existing technology. The structure of this device will not affect the working principle of the existing light curtain. Only the structure of the light curtain is designed. Therefore, the conductivity effect is achieved through the copper sheet 81 of the PCB board 8.

[0054] The implementation principle of a light curtain according to an embodiment of this application is as follows: When leaving the factory or carrying it for maintenance, the outer shell 1 and the outer shell 2 are carried independently. Then, the user installs the female plug-in sleeve 31 on one end of the outer shell 2 and the male plug-in sleeve 41 on one end of the outer shell 1. Then, one end of the PCB board 8 is inserted into the socket 9 of the outer shell 1. Then, the other end of the PCB board 8 is inserted into the socket 9 of the outer shell 2. At the same time, the male plug-in sleeve 41 is inserted into the female plug-in sleeve 31 to achieve connection and splice into a complete elevator light curtain.

[0055] Users can freely combine the female plug-in sleeve 31 and the male plug-in sleeve 41 to install them at both ends of the outer shell 1 or the outer shell 2, so as to achieve end-to-end connection or same-direction connection.

[0056] Example 2

[0057] Reference Figure 5 , Figure 6 One end of outer shell 1 is inserted and fixed to one end of connector 15 to achieve a seal. The other end of connector 15 is inserted and fixed to one end of outer shell 2 to achieve a seal. The size of connector 15 is the same as that of outer shell 1. A pin inserter 152 is fixed in the middle of connector 15. Fixing plates 151 are fixed at the upper and lower ends of pin inserter 152. The two sides of fixing plates 151 are respectively inserted into the interior of outer shell 1 and the interior of outer shell 2. Screws are movably inserted into the outer walls of outer shell 1 and outer shell 2. The threaded part of the screw is threaded and fixed to the threaded hole of fixing plate 151. Pins 153 are fixed at both ends of pin inserter 152. Pins 153 are connected to the female connector. Corresponding to the socket of 141, a metal contact piece is provided in the slot and contacts the pin 153 to achieve electrical connection. Both the outer casing 1 and the outer casing 2 have female connectors 141 that are plugged into and fixed inside to achieve electrical connection with the pin 153. The inner sides of the outer casing 1 and the outer casing 2 have inner slots 13. The main board 14 is inserted into the inner slot 13. The main board 14 is electrically connected to the female connector 141. The main board 14 can be equipped with a sensor assembly 10. The specific installation can be according to actual needs, including but not limited to those listed in this application. The two ends of the female connector 141 and the interior of the outer casing 1 have reserved space for the fixing plate 151 to be inserted.

[0058] The user inserts the fixing plate 151 at one end of the connector 15 into the interior of the outer casing 1, and inserts the pin 153 at one end into the socket of the female connector 141 inside the outer casing 1. Then, the user inserts the fixing plate 151 at the other end of the connector 15 into the interior of the outer casing 2, and inserts the pin 153 at the other end into the socket of the female connector 141 inside the outer casing 2, and then fixes it in place with screws.

[0059] In summary, this device can be disassembled into several units, reducing the overall length. It can be customized according to actual needs. At the same time, its shorter length facilitates transportation and carrying, greatly improving the practicality of the device.

[0060] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A light curtain, characterized by: It includes shell one (1) and shell two (2), the shell one (1) is completely same with shell two (2) structure, one end of the shell one (1) is sleeved with plug male sleeve (41), one end of the shell two (2) is sleeved with plug female sleeve (31) which is fixedly plugged with plug male sleeve (41); The middle part of the plug male sleeve (41) and the plug female sleeve (31) is fixedly plugged with the socket (9), and the conductive PCB board (8) is movably plugged between the two sockets (9); The plug male sleeve (41) and the plug female sleeve (31) are connected by the PCB board (8) to form an elevator light curtain whole and then spliced into various length light curtains.

2. A light curtain according to claim 1, wherein: The slot in the socket (9) is fixedly provided with a metal spring (91), and one end of the metal spring (91) protrudes.

3. A light curtain according to claim 2, wherein: The two sides of the PCB board (8) are embedded and fixed with copper sheets (81) which are in contact with the metal spring (91) to realize electrical connection.

4. A light curtain according to claim 1, wherein: One side of the plug male sleeve (41) and the plug female sleeve (31) is fixedly provided with a connecting plate (33), and the other side is fixedly provided with a limiting plate two (35) opposite to the connecting plate (33), and a plurality of limiting plate one (34) for limiting are fixedly provided at the vertical position of one side of the plug male sleeve (41) and the plug female sleeve (31) and the limiting plate two (35).

5. A light curtain according to claim 3, wherein: The opening of one side of the shell one (1) is provided with a side insertion groove (12) for the plastic plate (5), and the side insertion groove (12) is provided with a missing slot (11) for the insertion of the limiting plate two (35) on the side of the plug male sleeve (41).

6. A light curtain according to claim 5, wherein: The inner cavities of the shell one (1) and the shell two (2) are fixedly provided with a sensor assembly (10) which is electrically connected with the metal spring (91).

7. A light curtain according to claim 5, wherein: The ear plate (6) is fixedly provided on one side of the plastic plate (5), and a plurality of mounting grooves (7) connected with the elevator door through bolts are formed in the ear plate (6).

8. A light curtain according to claim 1, wherein: The connector (15) for connecting and fixing sealing is arranged between the shell one (1) and the shell two (2), the plug needle device (152) is fixedly provided in the middle part of the connector (15), the plug needle (153) is fixedly provided at both ends of the plug needle device (152), and the female connector seat (141) which is electrically connected with the plug needle (153) is fixedly plugged in the shell one (1) and the shell two (2).

9. A light curtain according to claim 8, wherein: The inner insertion grooves (13) for the plug-in and fixation of the mainboard (14) are formed in the inner cavities of the shell one (1) and the shell two (2), and the mainboard (14) is electrically connected with the female connector seat (141).

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