CN114696220A

CN114696220A - Electrical engineering and automatic production control device

Info

Publication number: CN114696220A
Application number: CN202210195335.8A
Authority: CN
Inventors: 仇亚红
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-07-01

Abstract

The invention discloses an electrical engineering and automatic production control device, and relates to the technical field of electrical engineering. The box door comprises a box door and a box body, wherein the box door is arranged at an opening at the front side of the box body in a matching manner, one side of the box door is hinged with the box body through a hinge, the horizontal section of the box door is arranged in an L shape, and meanwhile, the horizontal section of the opening at the front side of the box body is arranged in a corresponding L shape; a plurality of L-shaped mounting strips are arranged in the box door along the vertical direction in an array manner, a plurality of L-shaped retaining strips are arranged in the box body along the vertical direction in an array manner, and the plurality of L-shaped mounting strips and the plurality of L-shaped retaining strips are arranged in an alignment manner one by one; a placing plate is arranged above the L-shaped mounting bar. The invention can increase the space for opening the box door and the box body, is convenient for the operation of workers, improves the convenience of operations such as wiring, installation, control, maintenance and the like, and simultaneously, the device has neat circuit regulation and is convenient for the workers to check and maintain the circuit.

Description

Electrical engineering and automatic production control device

Technical Field

The invention belongs to the technical field of electrical engineering, and particularly relates to an electrical engineering and automatic production control device.

Background

With the continuous development of science and technology, in daily industrial production, the automatic production of the electrical engineering gradually replaces manual production, the popularization of the automatic production greatly improves the efficiency of the industrial production, and simultaneously effectively improves the production quality of products;

the invention is convenient for knowing the specific temperature and humidity in the electrical engineering control cabinet, is convenient for radiating or dehumidifying the inside of the electrical engineering control cabinet, is intelligent and convenient, is convenient for converting a certain amount of heat energy into electric energy and storing the electric energy in a storage battery, is energy-saving and environment-friendly, is convenient for improving the integral carding function, and prevents the occurrence of the condition of circuit disorder, be convenient for improve holistic storing function, be convenient for improve the inside luminance of switch board under the darker condition of light, be convenient for maintain.

Although the control device in the above publication can facilitate the operation and maintenance of the operator in practical use, the control device in the prior publication still has the following disadvantages in practical use:

1. the cabinet body in the existing control device is in an integrated box type arrangement, and in such an arrangement mode, the electric elements are all intensively arranged inside the cabinet body, but because the internal space of the cabinet body is limited, workers are inconvenient to wire, install, control, maintain and the like the electric elements inside, and inconvenience is brought to automatic production;

2. in the existing control device, after the wiring of each electrical element is carried out, the arrangement of the circuit is disordered, and workers can plug the wiring into the cabinet body, so that the arrangement mode is very inconvenient for the workers to check the circuit in actual use, and the maintenance difficulty is improved;

therefore, there is a need for improvement of the prior art to solve the above technical problems.

Disclosure of Invention

The invention aims to provide an electrical engineering and automatic production control device which is convenient to operate in wiring, installation, control, maintenance and the like and is convenient for workers to check internal circuits, and the problems that the conventional automatic production control device is inconvenient to operate in wiring, installation, control, maintenance and the like and is inconvenient for the workers to perform daily maintenance and check in actual use are solved.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an electrical engineering and automatic production control device, which comprises a box door and a box body, wherein the box door is arranged at an opening at the front side of the box body in a matching way, one side of the box door is hinged with the box body through a hinge, the horizontal section of the box door is arranged in an L shape, and the horizontal section of the opening at the front side of the box body is correspondingly arranged in an L shape;

a plurality of L-shaped mounting strips are arranged in the box door along the vertical direction in an array manner, a plurality of L-shaped retaining strips are arranged in the box body along the vertical direction in an array manner, and the plurality of L-shaped mounting strips and the plurality of L-shaped retaining strips are arranged in an alignment manner one by one;

the top of L shape mounting bar is provided with places the board, and the equipartition is provided with a plurality of screw thread through-holes that are used for realizing placing the board through the bolt and fix on the L shape mounting bar simultaneously.

Furthermore, mounting plates are symmetrically arranged on the two outer side faces of the rear end of the box body, and mounting holes are formed in the mounting plates.

Furthermore, a lock head is arranged in the middle of the other side of the box door relative to the hinge.

Furthermore, a threading hole is formed in the rear side plate of the box body below each L-shaped barrier strip.

Furthermore, a first convex column is arranged on the bottom surface of the L-shaped mounting strip close to one side of the hinge, and a second convex column is arranged on the bottom surface of the L-shaped barrier strip far away from one side of the hinge;

and a wire bundling mechanism for bundling and fixing the electric wires is rotatably connected between the first convex column and the second convex column which are positioned on the same horizontal plane.

Furthermore, the wire bunching mechanism comprises a linkage rod, a mounting rod and wire bunching plates, one ends of the linkage rod, which are close to the mounting rod, are rotatably connected through a connecting pin, and the two wire bunching plates are symmetrically and rotatably connected to two sides of the mounting rod;

the lower part of one side, close to the mounting rod, of the linkage rod is movably connected with a telescopic plate, the lower side of one end, close to the mounting rod, of the telescopic plate is provided with a first tip abutting part, and the upper part of the first tip abutting part is provided with a second tip abutting part in a retraction mode; a magnet plate is arranged on one end face, far away from the mounting rod, of the telescopic plate, and an electromagnetic column is fixedly connected to the bottom face of the linkage rod on one side of the magnet plate;

and a linkage strip is vertically arranged on the bottom surface of one side, close to the linkage rod, of the bunching plate and is perpendicular to the bunching plate.

Furthermore, grooves extending along the long side edge direction of the installation rod are symmetrically arranged on two sides of the bottom surface of the installation rod, a rotating column is arranged in each groove, two ends of each rotating column are fixedly connected to the installation rod, and one side of the wire bundling plate is sleeved on the rotating column in a sliding mode;

the top surface of the wire bundling plate, which is far away from one side of the mounting rod, is fixedly connected with wire pressing strips through screws, a plurality of first wire bundling grooves are uniformly distributed on the top surface of the wire bundling plate, and second wire bundling grooves are arranged on the bottom surface of the wire pressing strips in a one-to-one correspondence manner with the first wire bundling grooves;

the first line pressing groove is perpendicular to the axis of the rotating column, and clamping strips are symmetrically arranged on the inner wall of the opening end of the first line pressing groove on one side of the line pressing strip.

Furthermore, a rectangular through groove is formed in the telescopic plate along the direction of the long side, a guide rod is fixedly arranged in the rectangular through groove along the direction of the long side, a positioning block is sleeved on the guide rod in a sliding mode, the positioning block is fixedly connected to the bottom surface of the linkage rod, and a reset spring is sleeved on the guide rod, close to one side of the magnet plate, of the positioning block in a sliding mode.

Further, when the two line bundling plates naturally droop to be perpendicular to the horizontal plane, the distance between the two line bundling plates is larger than the width of the tip of the first tip abutting part; when the tip part of the second tip abutting part and the wiring board start to overlap, the distance between the two linkage strips is larger than the tip width of the second tip abutting part.

Furthermore, an infrared receiver is arranged at the upper end of the front side face of the box body, an infrared transmitter is arranged on the inner wall of the upper end of the box door, and when the box door and the box body are in a closed locking state, the infrared receiver and the infrared transmitter are aligned.

The invention has the following beneficial effects:

1. when the box door is used, the horizontal section of the box door is in the L shape, and the L-shaped opening of the box body is applicable, so that the operation space can be enlarged during wiring, installation, control and maintenance, the operation of a worker is not limited to the space, meanwhile, the arrangement of the fixed connection between the placing plate and the L-shaped mounting strip ensures that the electric element on the placing plate can be moved out of the box body according to the rotation of the box door when the box door is opened, and the wiring, installation, control and maintenance of the worker are facilitated.

2. When the box door is used, when the box door is rotated and opened relative to the box body, the linkage rod and the mounting rod can be correspondingly unfolded to form a straight line, the expansion plate can push the wire bundling plates in the unfolding process, the two wire bundling plates are unfolded to be parallel to the horizontal plane, and the electric wires are mounted in the first wire bundling grooves one by one, so that great convenience is brought to the inspection and maintenance of the circuits by workers, and the neatness of wiring is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a rear left side view of the FIG. 1 construction of the present invention;

FIG. 3 is a schematic view of the combination of the box door, the box body and the wire binding mechanism of the present invention;

FIG. 4 is a schematic view of the overall structure of the door of the present invention;

FIG. 5 is a schematic view of the overall structure of the case of the present invention;

FIG. 6 is a schematic view of the overall structure of the wire-bundling mechanism according to the present invention;

FIG. 7 is an exploded view of the structure of FIG. 6 in accordance with the present invention;

FIG. 8 is a schematic view of the combination of the wire binding plate and the wire pressing plate according to the present invention;

FIG. 9 is a schematic view of the overall construction of the mounting bar of the present invention;

FIG. 10 is a schematic view of the overall structure of a linkage rod according to the present invention;

fig. 11 is a schematic view of the overall structure of the expansion plate of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a box door; 2. a box body; 3. a wire bundling mechanism; 4. placing the plate; 5. a hinge; 101. a lock head; 102. an infrared emitter; 103. an L-shaped mounting bar; 201. an infrared receiver; 202. mounting a plate; 203. threading holes; 204. an L-shaped barrier strip; 301. a linkage rod; 302. mounting a rod; 303. a wire bundling plate; 304. a connecting pin; 305. pressing a line; 1031. a first male post; 1032. a threaded through hole; 2021. mounting holes; 2041. a second male post; 3011. a retractable plate; 3012. an electromagnetic column; 3013. positioning blocks; 3014. a guide rod; 3015. a return spring; 3016. a magnet plate; 3017. a rectangular through slot; 3018. a second tip abutting part; 3019. a first tip abutting part; 3021. a groove; 3022. rotating the column; 3031. a linkage bar; 3032. a first wiring trough; 3033. clamping the strip; 3051. and a second bundling slot.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, 2 and 4, the invention relates to an electrical engineering and automatic production control device, which comprises a box door 1 and a box body 2, wherein the box door 1 is arranged at an opening at the front side of the box body 2 in a matching manner, one side of the box door 1 is hinged with the box body 2 through a hinge 5, the box door 1 can rotate relative to the box body 2 by the arrangement, mounting plates 202 are symmetrically arranged on two outer side surfaces at the rear end of the box body 2, mounting holes 2021 are formed in the mounting plates 202, the mounting holes 2021 are used for fixedly mounting the device integrally, a lock head 101 is arranged in the middle of the other side of the box door 1 provided with the hinge 5, the lock head 101 can be locked and fixed between the box door 1 and the box body 2, a threading hole 203 is formed in the rear side plate of the box body 2 below each L-shaped barrier strip 204, and the threading hole 203 is used for passing through an external threading.

Referring to fig. 1-5, the horizontal section of the box door 1 is L-shaped, and the horizontal section of the opening at the front side of the box body 2 is correspondingly L-shaped;

a plurality of L-shaped mounting strips 103 are arranged in an array manner along the vertical direction in the box door 1, a plurality of L-shaped blocking strips 204 are arranged in an array manner along the vertical direction in the box body 2, and the plurality of L-shaped mounting strips 103 and the plurality of L-shaped blocking strips 204 are arranged in an alignment manner one by one;

a placing plate 4 is arranged above the L-shaped mounting bar 103, a plurality of threaded through holes 1032 for fixing the placing plate 4 through bolts are uniformly distributed on the L-shaped mounting bar 103, the placing plate 4 is arranged for fixing each electric element, the L-shaped mounting bar 103 can realize primary fixing of the placing plate 4, the L-shaped barrier bar 204 can realize limiting lifting of the placing plate 4, and stability of the placing plate 4 is improved;

when the arrangement is used, a worker firstly fixedly installs the placing plate 4 on the L-shaped mounting bar 103 through bolts, then reasonably installs each electric element on the placing plate 4 and performs corresponding wiring, when the box door 1 is in an opening state relative to the box body 2, the placing plate 4 is taken out and unfolded by the L-shaped mounting bar 103, and when the box door 1 is in a closing state relative to the box body 2, the placing plate 4 is abutted to the L-shaped barrier bar 204 to realize bracket limiting.

Referring to fig. 3-9, a first convex column 1031 is disposed on the bottom surface of the L-shaped mounting bar 103 near the hinge 5, and a second convex column 2041 is disposed on the bottom surface of the L-shaped blocking bar 204 far from the hinge 5;

a wire bundling mechanism 3 for bundling and fixing the wires is rotatably connected between the first convex column 1031 and the second convex column 2041 which are positioned on the same horizontal plane, on one hand, the arrangement of the first convex column 1031 and the second convex column 2041 can limit the wire bundling mechanism 3, and simultaneously, the angle adjustment of the movement of the end part of the wire bundling mechanism 3 by taking the first convex column 1031 and the second convex column 2041 as axes is facilitated;

the wire bundling mechanism 3 comprises a linkage rod 301, a mounting rod 302 and a wire bundling plate 303, one ends of the linkage rod 301 and the mounting rod 302, which are close to each other, are rotatably connected through a connecting pin 304, the rotation between the linkage rod 301 and the mounting rod 302 can be realized through the arrangement, when the box door 1 is in a closed state, the linkage rod 301 and the mounting rod 302 are arranged in an L shape, and when the box door 1 is in an open state, the linkage rod 301 and the mounting rod 302 are arranged in a straight line shape;

the two wire bundling plates 303 are symmetrically and rotatably connected to two sides of the mounting rod 302;

specifically, grooves 3021 extending along the long side direction of the mounting rod 302 are symmetrically arranged on two sides of the bottom surface of the mounting rod 302, a rotating column 3022 is arranged in each groove 3021, two ends of each rotating column 3022 are fixedly connected to the mounting rod 302, one side of the wire bundling plate 303 is slidably sleeved on the rotating column 3022, and the wire bundling plate 303 can rotate downwards with the rotating column 3022 as an axis;

the top surface of one side, far away from the mounting rod 302, of the wire bundling plate 303 is fixedly connected with the wire pressing strips 305 through screws, a plurality of first wire bundling grooves 3032 are uniformly distributed on the top surface of the wire bundling plate 303, meanwhile, second wire bundling grooves 3051 are arranged on the bottom surface of the wire pressing strips 305 in a one-to-one correspondence mode with the first wire bundling grooves 3032, and the wire pressing strips 305 can be used for pressing wires;

the first wiring slot 3032 is vertical to the axis of the rotating column 3022, and the inner wall of the open end of the first wiring slot 3032 on one side of the wiring strip 305 is symmetrically provided with clamping strips 3033, and the clamping strips 3033 can press and fix the electric wires;

when the wire harness fixing device is used, after the wire passes through the threading hole 203, the wire sequentially passes through the first wire bundling grooves 3032 on the two wire bundling plates 303 and is limited preliminarily by the clamping strips 3033, then the second wire bundling grooves 3051 are pressed on the wire and fixed through screws, and the wire arrangement integration is achieved.

Referring to fig. 1, 4, 5, 8, 9, 10 and 11, a telescopic plate 3011 is movably connected to the lower part of one side of the linkage rod 301 close to the installation rod 302;

specifically, a rectangular through groove 3017 is formed in the retractable plate 3011 along the long side direction, a guide rod 3014 is fixedly arranged in the rectangular through groove 3017 along the long side direction, a positioning block 3013 is slidably sleeved on the guide rod 3014, the positioning block 3013 is fixedly connected to the bottom surface of the linkage rod 301, a reset spring 3015 is slidably sleeved on the guide rod 3014 on the side, close to the magnet plate 3016, of the positioning block 3013, and the reset spring 3015 can be reset after the guide rod 3014 moves relative to the positioning block 3013;

a magnet plate 3016 is arranged on one end face, far away from the installation rod 302, of the telescopic plate 3011, and an electromagnetic column 3012 is fixedly connected to the bottom face of the linkage rod 301 on one side of the magnet plate 3016;

the lower side of one end of the telescopic plate 3011 close to the mounting rod 302 is provided with a first tip offset portion 3019, the upper side of the first tip offset portion 3019 is provided with a second tip offset portion 3018 in a retraction manner, the second tip offset portion 3018 is located at the inner side of the tip of the first tip offset portion 3019, see fig. 11 in detail;

a linkage bar 3031 is vertically arranged on the bottom surface of one side of the wire bundling plate 303 close to the linkage rod 301 and is perpendicular to the wire bundling plate 303;

when the two line bundling plates 303 naturally hang down to be perpendicular to the horizontal plane, the distance between the two line bundling plates 303 is larger than the width of the tip of the first tip abutting part 3019; when the prong part of the second prong abutting part 3018 starts to overlap with the wiring board 303, the distance between the two linkage strips 3031 is greater than the prong width of the second prong abutting part 3018, and the arrangement can be implemented such that when the retractable plate 3011 is fed, the first prong abutting part 3019 initially separates the two wiring boards 303 to realize that a certain gap exists between the two linkage strips 3031, and along with the further feeding of the retractable plate 3011, the second prong abutting part 3018 can further abut the two linkage strips 3031, and finally the two wiring boards 303 are in a horizontal parallel state;

the upper end of the front side face of the box body 2 is provided with an infrared receiver 201, the inner wall of the upper end of the box door 1 is provided with an infrared transmitter 102, when the box door 1 and the box body 2 are in a closed and locked state, the infrared receiver 201 is aligned with the infrared transmitter 102, the infrared receiver 201 and the infrared transmitter 102 are electrically connected with a controller in the arrangement, and the controller is arranged on the placing plate 4 to realize control over the infrared receiver 201 and the infrared transmitter 102;

when the arrangement is used, when the box door 1 is opened, after the infrared receiver 201 cannot receive a signal sent by the infrared transmitter 102, the electromagnetic column 3012 is electrified to generate magnetism, the telescopic plate 3011 moves towards one side of the mounting rod 302 under the action of like-pole repulsion between the electromagnetic column 3012 and the magnet plate 3016, the first tip abutting part 3019 and the second tip abutting part 3018 sequentially abut the wiring boards 303 and the linkage strips 3031, and finally, the two wiring boards 303 are horizontally arranged in parallel, and the wires are completely unfolded to realize line detection of workers;

when the box door 1 needs to be closed, a worker controls the electromagnetic column 3012 to be powered off through the controller, the reset spring 3015 can reset the telescopic plate 3011, then the first pointed end opening part 3019 and the second pointed end opening part 3018 are separated from the two wire bundling plates 303, the wire bundling plates 303 move downwards, and the operation of closing the box door 1 by the worker is facilitated.

The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made to the technical solutions described in the above embodiments, and to some of the technical features thereof, are included in the scope of the present invention.

Claims

1. Electrical engineering and automated production controlling means, including chamber door (1) and box (2), chamber door (1) cooperation sets up the opening part in box (2) front side, and one side of chamber door (1) and box (2) pass through hinge (5) hinge and close its characterized in that: the horizontal section of the box door (1) is arranged in an L shape, and the horizontal section of the opening at the front side of the box body (2) is correspondingly arranged in an L shape;

a plurality of L-shaped mounting strips (103) are arranged in the box door (1) along the vertical direction in an array manner, a plurality of L-shaped retaining strips (204) are arranged in the box body (2) along the vertical direction in an array manner, and the plurality of L-shaped mounting strips (103) and the plurality of L-shaped retaining strips (204) are arranged in a one-to-one alignment manner;

a placing plate (4) is arranged above the L-shaped mounting bar (103), and meanwhile, a plurality of threaded through holes (1032) used for fixing the placing plate (4) through bolts are uniformly distributed in the L-shaped mounting bar (103).

2. The electrical engineering and automatic production control device according to claim 1, wherein the box body (2) is symmetrically provided with mounting plates (202) on two outer side surfaces at the rear end, and the mounting plates (202) are provided with mounting holes (2021).

3. Electrical engineering and automation production control device according to claim 2, characterised in that a lock (101) is arranged in the middle of the other side with respect to the box door (1) provided with the hinge (5).

4. The electrical engineering and automation production control device as claimed in claim 3, characterised in that the box body (2) below each L-shaped barrier strip (204) is provided with a threading hole (203) on the rear side plate.

5. The electrical engineering and automation production control device according to any one of claims 1 to 4, characterised in that a first convex column (1031) is provided on the bottom surface of the L-shaped mounting bar (103) on the side close to the hinge (5), and a second convex column (2041) is provided on the bottom surface of the L-shaped blocking bar (204) on the side far from the hinge (5);

and a wire bundling mechanism (3) for bundling and fixing the electric wires is rotatably connected between the first convex column (1031) and the second convex column (2041) which are positioned on the same horizontal plane.

6. The electrical engineering and automation production control device according to claim 5, wherein the wire bundling mechanism (3) comprises a linkage rod (301), a mounting rod (302) and wire bundling plates (303), one ends of the linkage rod (301) and the mounting rod (302) close to each other are rotatably connected through a connecting pin (304), and the two wire bundling plates (303) are rotatably connected to two sides of the mounting rod (302) in a symmetrical manner;

a telescopic plate (3011) is movably connected to the lower portion of one side, close to the mounting rod (302), of the linkage rod (301), a first pointed end abutting-opening portion (3019) is arranged on the lower side of one end, close to the mounting rod (302), of the telescopic plate (3011), and a second pointed end abutting-opening portion (3018) is arranged above the first pointed end abutting-opening portion (3019) in an inward-contracting mode; a magnet plate (3016) is arranged on one end face, far away from the mounting rod (302), of the telescopic plate (3011), and an electromagnetic column (3012) is fixedly connected to the bottom face of the linkage rod (301) on one side of the magnet plate (3016);

and a linkage bar (3031) is vertically arranged on the bottom surface of one side of the wire bundling plate (303) close to the linkage rod (301) and is perpendicular to the wire bundling plate (303).

7. The electrical engineering and automation production control device as claimed in claim 6, wherein, the two sides of the bottom surface of the mounting rod (302) are symmetrically provided with grooves (3021) extending along the long side direction of the mounting rod (302), the grooves (3021) are provided with rotating columns (3022), the two ends of the rotating columns (3022) are fixedly connected to the mounting rod (302), and one side of the wire bundling plate (303) is slidably sleeved on the rotating columns (3022);

the wire bundling plate (303) is fixedly connected with a wire pressing strip (305) through screws on the top surface of one side, away from the mounting rod (302), of the wire bundling plate (303), a plurality of first wire bundling grooves (3032) are uniformly distributed on the top surface of the wire bundling plate (303), and meanwhile, second wire bundling grooves (3051) are formed in the bottom surface of the wire pressing strip (305) and the first wire bundling grooves (3032) in a one-to-one correspondence mode;

the first line pressing groove (3032) is vertical to the axis of the rotating column (3022), and clamping strips (3033) are symmetrically arranged on the inner wall of the opening end of the first line pressing groove (3032) on one side of the line pressing strip (305).

8. The electrical engineering and automation production control device according to claim 6, wherein a rectangular through groove (3017) is arranged on the expansion plate (3011) along the long side direction, a guide rod (3014) is fixedly arranged in the rectangular through groove (3017) along the long side direction, a positioning block (3013) is slidably sleeved on the guide rod (3014), the positioning block (3013) is fixedly connected to the bottom surface of the linkage rod (301), and a return spring (3015) is slidably sleeved on the guide rod (3014) on the side of the positioning block (3013) close to the magnet plate (3016).

9. The electrical engineering and automated production control device according to claim 7 or 8, wherein when the two wire-tying plates (303) naturally hang down to be perpendicular to the horizontal plane, the distance between the two wire-tying plates (303) is larger than the tip width of the first tip abutting portion (3019); when the tip part of the second tip opening part (3018) and the wiring bundling plate (303) start to overlap, the distance between the two linkage strips (3031) is larger than the tip width of the second tip opening part (3018).

10. The electrical engineering and automation production control device according to claim 9, wherein the box body (2) is provided with an infrared receiver (201) at the upper end of the front side, and the inner wall of the upper end of the box door (1) is provided with an infrared transmitter (102), and when the box door (1) and the box body (2) are in the closed and locked state, the infrared receiver (201) and the infrared transmitter (102) are aligned.