CN219779533U - Start box - Google Patents

Abstract

The utility model discloses a starting end box, which comprises a box body, a box cover, a copper bar assembly, a bus connector and an electronic assembly, wherein the box body is provided with a box cover; the box body is provided with an opening, and the two ends of the box body are respectively provided with an input end and an output end; the case cover is used for opening or closing the opening; the copper bar assembly comprises a zero line bar, a ground line bar, an input bar group and an output bar group; the zero line row and the ground line row are arranged along a third direction; the input row group and the output row group are distributed along the first direction and are positioned between the zero line row and the ground line row; the input row group is close to the input end of the box body, and the output row group is close to the output end of the box body; the bus connector is connected to the output end of the copper bar assembly; the electronic assembly comprises a first electrical unit and a second electrical unit which are distributed along a third direction; the first electrical unit is positioned between the input row group and the output row group; the second electrical unit and the ground wire row are distributed along a second direction; the first direction, the second direction, and the third direction are orthogonal. The starting end box is visual and simple in layout and convenient to maintain.

Description

Start box

Technical Field

The utility model relates to the technical field of electric appliances, in particular to a starting end box.

Background

The terminal bus is a power distribution device of an electric terminal, and the function of supplying power to specific equipment, in particular to the power supply of a network cabinet in a data center, is realized through devices such as a plug box and the like matched with the terminal bus. The power input function of the terminal bus is usually completed by a start box, the start box can realize the access of a main circuit total input cable and the connection of the terminal bus, and the start box can monitor the electric parameters of each phase voltage, current, frequency, apparent power, active power, reactive power, power factor, electric energy consumption, load percentage, switch state, temperature and the like of the main circuit. The starting end box comprises a circuit breaker, a lightning arrester, an electric energy detection module and the like, however, the existing starting end box is large in structure size, the structure in the box is complicated, and maintenance is inconvenient.

Disclosure of Invention

The utility model aims to overcome the defects or problems in the background art and provide the starting box which is visual and concise in layout and convenient to maintain.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

according to one aspect, a start box includes: the box body extends along a first direction and is opened along a second direction, and an input end and an output end are respectively arranged at two ends of the box body along the first direction; a case cover connected to the case body and for opening or closing the opening; the copper bar assembly is arranged in the box body and comprises a zero line bar, a ground line bar, an input bar group and an output bar group; the zero line row and the ground line row are arranged along a third direction; the input row group and the output row group are distributed along the first direction and are positioned between the zero line row and the ground line row; the input row group is close to the input end of the box body and faces the input end of the box body, a live wire wiring terminal group is arranged on the input end of the zero line row facing the box body, a zero line wiring terminal is arranged on the input end of the zero line row facing the box body, and a ground wire wiring terminal is arranged on the ground line row facing the input end of the box body; the output row group is close to the output end of the box body; the bus connector is arranged on the box body and is connected with one end, close to the output end of the box body, of the output row group, the zero line row and the ground line row, and the first direction, the second direction and the third direction are orthogonal; and an electronic component installed in the case and including a first electrical unit and a second electrical unit arranged in a third direction; the first electrical unit is positioned between the input row group and the output row group, and two ends of the first electrical unit along the first direction are respectively connected into the input row group and the output row group; the second electrical unit and the ground wire row are distributed along a second direction, and the second electrical unit is located at one side close to the opening of the box body.

Based on the first technical scheme, a second technical scheme is further provided, and the second technical scheme further comprises a fault wave recording detection table and an indicator lamp; a first area and a second area are distributed in the box body along a first direction corresponding to the opening, and the second area is close to the output end of the box body; the box cover is provided with a fixed part and a movable part, the fixed part is covered on the opening corresponding to the second area, and the movable part is suitable for opening or closing the opening corresponding to the first area; the fault wave recording detection meter and the indicator lamp are fixedly connected to the fixing part; the second electrical unit comprises a lightning protection device, a lightning protection air switch, a fuse and a three-phase intelligent ammeter which are sequentially arranged along a first direction; the fuse, the three-phase intelligent ammeter, the fault wave recording detection meter and the indicator lamp are powered by the copper bar assembly; the input end of the lightning protection device is connected with the output row group and the zero line row, the input end of the lightning protection device is connected with the output end of the lightning protection device, and the output end of the lightning protection device is connected with the ground wire row; the fault wave recording detection table is connected to the output row group through the fuse; the three-phase intelligent ammeter is connected into an output row group through the fuse; the electronic assembly further includes an input side detector set and an output side detector set; the input side detector group is used for detecting the current of the input row group and is connected with the fault wave recording detection meter through signals, and the output side detector group is used for detecting the current of the output row group and is connected with the three-phase intelligent ammeter through signals.

Based on the second technical scheme, a third technical scheme is further provided, and the third technical scheme further comprises a first separator; the bus connector is connected to one end, close to the output end of the box body, of the output row group, the zero line row and the ground line row in the second area; the first electrical unit, the lightning protector, the lightning protection air switch and the fuse are all positioned in a first area; the three-phase intelligent ammeter spans the first area and the second area and is arranged in the box body; the first separator is fixedly connected to the box body and shields one side, facing the opening, of the output row group and the output side detector group.

Based on the third technical scheme, a fourth technical scheme is further provided, in the fourth technical scheme, the first isolation piece comprises a first isolation part, a first connection part and a second connection part which are fixedly connected with each other; the first isolation part shields one side of the output row group and the output side detector group, which faces the opening; the first connecting part and the second connecting part extend from the two ends of the first isolation part along the second direction to the inside of the box body respectively, the first connecting part passes through a gap between the output row group and the ground wire row to be fixedly connected with the box body, and the second connecting part passes through a gap between the output row group and the zero line row to be fixedly connected with the box body.

Based on the fourth technical scheme, a fifth technical scheme is further provided, and in the fifth technical scheme, the second isolation piece and the third isolation piece are further included; the input row group comprises three live wire input rows; the output row group comprises three live wire output rows; the input side detector group comprises three input side detectors which are respectively sleeved on three live wire input rows; the output side detector group comprises three output side detectors which are respectively sleeved on the three live wire output rows; the second separator is arranged between two adjacent live wire input rows; the third separator is arranged between two adjacent live wire output rows.

Based on the fifth technical scheme, a sixth technical scheme is further provided, in the sixth technical scheme, two ends of the first electrical unit along the first direction are respectively provided with first dovetail grooves with the same number as the second isolation pieces and second dovetail grooves with the same number as the third isolation pieces; the second isolating piece is provided with a first clamping part matched with the first dovetail groove and a second isolating part integrally formed with the first clamping part, and the second isolating part is positioned between two adjacent live wire input rows; the third isolation piece is provided with a second clamping part matched with the second dovetail groove and a third isolation part integrally formed with the second clamping part, and the third isolation part is positioned between two adjacent live wire output rows.

Based on the technical scheme six, a technical scheme seven is further arranged, and the installation assembly is further included in the technical scheme seven; the box body is provided with a bottom wall opposite to the opening and a first side wall which is close to the ground wire row and vertical to a third direction; the mounting assembly comprises a first mounting frame fixedly connected to the bottom wall and a second mounting frame fixedly connected to the first side wall; the first electrical unit and the copper bar assembly are fixedly connected to the first mounting frame, and the second electrical unit is fixedly connected to the second mounting frame.

Based on the seventh technical scheme, a eighth technical scheme is further provided, in the eighth technical scheme, the novel wire binding machine further comprises a first wire binding device extending along a first direction and a second wire binding device extending along a third direction, the first wire binding device is fixedly connected to the first side wall, and the second wire binding device is fixedly connected to the bottom wall of the box body close to the output end of the box body; the first electrical unit is a circuit breaker; the input end and the output end of the lightning protection air switch are respectively positioned at two ends of the lightning protection air switch along the third direction, and the input end of the lightning protection air switch is close to the first electrical unit; the input end and the output end of the lightning protection device are respectively positioned at two ends of the lightning protection device along the third direction, and the input end of the lightning protection device deviates from the first electric unit.

Based on the second technical scheme, a ninth technical scheme is further provided, in the ninth technical scheme, two ends of the box body along the first direction are respectively provided with a second side wall and a third side wall which are perpendicular to the first direction, the second side wall is provided with a first through hole along the first direction, the third side wall is provided with a second through hole along the first direction, and the first through hole and the second through hole respectively form an input end and an output end of the box body; also comprises an elastic shielding piece; the elastic shielding piece is provided with a gap along a first direction, and the edge of the elastic shielding piece, which is positioned on the box body, is used for shielding the first through hole; the bus connector penetrates through the second through hole to extend out of the box body and is matched with the shape of the second through hole, and the bus connector is fixedly connected to the third side wall.

Based on the first technical scheme, a tenth technical scheme is further provided, in the tenth technical scheme, the fixing part protrudes out of the box body cover and is arranged on the opening corresponding to the second area; the first area comprises a first part and a second part which are distributed along a first direction, and the first part is close to the input end of the box body; the movable part comprises a first cover body and a second cover body, the first cover body is suitable for being covered on an opening corresponding to the first part, the second cover body is suitable for being covered on an opening corresponding to the second part and forms a connecting structure with the box body, one ends of the first cover body and the second cover body, which are far away from the fixed part, are rotationally connected, and the rotation axis of the first cover body and the second cover body extends along a third direction; the connecting structure is configured to enable the second cover body to be in sliding fit with the box body, so that the second cover body is suitable for being parked at the first position, the second position and the third position; when the second cover body is stopped at the first position and the first cover body is level with the second cover body, the second cover body is close to the box body and covers the opening corresponding to the second part, and the first cover body is close to the box body and covers the opening corresponding to the first part; when the second cover body is stopped at the second position, the second cover body is far away from the box body and is avoided from the fixing part, and the second cover body shields the opening corresponding to the second part; when the second cover body is stopped at the third position, the second cover body is far away from the box body and is avoided from the fixing part, and the second cover body opens the opening corresponding to the second part.

From the above description of the present utility model, compared with the prior art, the present utility model has the following advantages:

1. according to the technical scheme I, an input cable of a main power supply is connected with a live wire wiring terminal group, a zero wire wiring terminal and a ground wire wiring terminal through an input end of a box body, a bus connector is connected with a tail end bus through an output end of the box body, and the extending direction of the tail end bus is generally the first direction, so that an electronic component in a starting end box can be intuitively presented to maintenance personnel, specifically, a first electric unit is positioned between an input row group and an output row group, namely, the input row group, the first electric unit and the output row group are arranged along the first direction, and the first electric unit and a second electric unit are arranged along the third direction, so that the whole is more intuitive, the detection and maintenance are facilitated, and the temperature sensor is conveniently arranged on a copper row component to collect temperature; the second electrical unit and the ground wire row are arranged along the second direction, so that the lightning protection device is conveniently connected into the ground wire row, and the wiring distance is shortened; the lightning protection device, the lightning protection air switch, the fuse and the three-phase intelligent ammeter are sequentially arranged along the first direction, and the wiring distance is short, so that the safety requirements are met; it can be seen that, by adopting the technical scheme, the overall layout in the starting end box is visual and concise, the maintenance is convenient, the wiring distance between the devices is short, and the safety problem is avoided.

2. In the second technical scheme, the fixing part is covered on the opening corresponding to the second area, and the second area is close to the output end of the box body, namely the opening corresponding to the first area of the box body can be opened, so that the connection of the live wire connecting terminal group, the zero wire connecting terminal and the ground wire connecting terminal is facilitated; the input side detector group and the output side detector group are arranged so as to collect the current of the input row group and the current of the output row group; the second electric unit comprises a lightning arrester, a lightning arrester idle switch, a fuse and a three-phase intelligent ammeter which are sequentially arranged along the first direction, and the second electric unit and the ground wire row are arranged along the second direction, so that the lightning arrester is conveniently connected into the ground wire row, the wiring distance is shortened, the wiring distance between devices and between the copper bar assembly is short, the safety requirements are met, and the lightning arrester is tidy and attractive; the three-phase intelligent ammeter can collect the current of the output bank and the voltage of the output bank, and the fault wave recording detection meter and the indicator lamp are arranged on the fixing part, so that maintenance personnel can know the internal operation condition of the starting end box in real time.

3. In the third technical scheme, because the frequency of the fuse maintenance is higher, the first isolating piece is arranged so that maintenance personnel cannot touch the output row group and the output side detector group when the fuse is replaced, and the fuse maintenance device is safer; the first electrical unit, the lightning protector, the lightning protection air switch and the fuse are all positioned in the first area; the three-phase intelligent ammeter spans the first region and the second region and is installed in the box body, so that the space of the input end of the box body is large, the wiring of the input end of the box body is convenient, in practical application, the wiring of the three-phase intelligent ammeter can be conveniently arranged in the first region, the layout of the electronic component can enable the signal line or the connecting line distance between the devices to be short, and the three-phase intelligent ammeter is attractive.

4. In the fourth technical scheme, the first isolating piece is simple to use in structural arrangement and does not occupy the space inside the starting end box; the first connecting part passes through a gap between the output row group and the ground wire row and is fixedly connected with the box body, so that the first connecting part can separate the output row group from the ground wire row, and the safety requirements are met; the second connecting part passes through a gap between the output row group and the zero line row and is fixedly connected with the box body, so that the second connecting part can separate the output row group from the zero line row, and the safety requirements are met.

5. In the fifth technical scheme, the second isolating piece and the third isolating piece are arranged, so that the live wire input row meets the safety requirement more, the live wire output row meets the safety requirement more, and the starting end box is safer.

6. In the sixth technical scheme, the second separator is clamped with the first dovetail groove so as to be placed between two adjacent live wire input rows, and the third separator is clamped with the second dovetail groove so as to be placed between two adjacent live wire output rows, so that the structure is ingenious, and the installation and the disassembly are easy.

7. In the seventh technical scheme, the first electrical unit and the copper bar assembly are fixedly connected to the first mounting frame, and the second electrical unit is fixedly connected to the second mounting frame, so that the electrical assembly and the copper bar assembly can be stably mounted without changing the size of the initial end box body, and the installation is simpler and more convenient.

8. In the eighth technical scheme, the arrangement of the first wire binding device and the second wire binding device is convenient for arranging the cables, is more attractive, and does not occupy the internal space of the starting end box; the input that the lightning protection was empty is close to first electrical unit, and the output of lightning protection device deviates from first electrical unit for lightning protection is empty to be opened and is arranged the wiring distance of group and zero line row with the output, and the wiring distance of the output that the lightning protection was empty and the input of lightning protection device is short, and the wiring distance of the output of lightning protection device and ground wire row is short, more pleasing to the eye and more accords with the safety rule requirement.

9. In the ninth technical scheme, an input cable of the main power supply can pass through a gap of the elastic shielding piece to be connected with a wiring terminal of the copper bar assembly, and the elastic shielding piece has a protective effect on the inside of the initial end box before or after the connection of the cable; the bus connector passes through the second through hole and extends out of the box body, and is connected to the terminal bus, and the bus connector is fixedly connected to the third side wall, so that the structure is stable and the installation is easy.

10. In a tenth technical scheme, the movable part comprises a first cover body and a second cover body, the first cover body is rotationally connected with one end, far away from the fixed part, of the second cover body, and the rotation axis of the first cover body extends along a third direction, so that the inside of the starting end box can be maintained only by opening the opening of the first cover body, in practical application, when an input cable of the main power supply is connected with a terminal of the copper bar assembly, the first cover body is opened, when a first electric unit needs to be controlled or a fuse needs to be replaced, the second cover body is opened, namely, the part with the highest frequency or maintenance frequency corresponds to the first cover body, the electronic device with the next highest maintenance frequency corresponds to the second cover body, the electronic device with the lowest maintenance frequency is arranged in a second area so as to be convenient to maintain, the split design of the movable part is more flexible, and the adaptability is stronger; in the initial state, the distance between the first cover body and the second cover body is shortest and is free from gaps, namely the first cover body is positioned at a first position and covers the opening corresponding to the first part, the second cover body covers the opening corresponding to the second part, and the movable part is in a closed state; when the inside of the starting end box is required to be maintained, if an input cable of a main power supply is connected with a wiring terminal of the copper bar assembly, the first cover body is opened; if the first electric unit is required to be controlled or the fuse is required to be replaced, after the first cover body is opened, the second cover body slides to a third position relative to the box body, and the second cover body does not shield the opening corresponding to the second part any more, so that the opening corresponding to the second part is also opened. It can be seen that, by adopting the technical scheme, the movable part does not need to be turned over entirely, the opening of the box body can be opened in batches in a matching mode of rotation and sliding, and the space required during maintenance is smaller.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall schematic of an embodiment of the present utility model;

FIG. 2 is a schematic view of an embodiment of the utility model with a movable part opened;

FIG. 3 is a schematic view of a connection structure according to an embodiment of the present utility model;

FIG. 4 is a schematic illustration of a portion of a first embodiment of the present utility model;

FIG. 5 is a schematic view of a hidden box cover and a first spacer according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a hidden case cover according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a first spacer according to an embodiment of the present utility model;

fig. 8 is a schematic diagram of a portion of a second embodiment of the present utility model.

The main reference numerals illustrate:

a case 10; a first side wall 11; a second side wall 12; a first through hole 121; a card slot 122; a third side wall 13; a second through hole 131; a bottom wall 14; a first region 101; a first portion 1011; a second portion 1012; a second region 102;

An elastic shutter 04;

a case cover 20; a fixing portion 21; a movable portion 22; a first cover 221; an elastic buckle 2211; a second cover 222;

a connection structure 200; a first connector 201; a first chute 2011; a fifth position 20111; a sixth position 20112; a second chute 2012; a fourth location 20121; a second connector 202; a slider 2021; a fixing member 203;

a copper bar assembly 30; a zero line row 31; zero line connection terminal 311; a ground line row 32; a ground connection terminal 321; an input row group 33; a live wire connection terminal group 331; an output bank 34;

a bus bar connector 40;

an electronic assembly 50; a first electrical unit 51; a first dovetail groove 511; a second dovetail groove 512; a second electrical unit 52; a lightning protection device 521; lightning protection blank 522; a fuse 523; three-phase smart meter 524; an input side detector group 53; an output side detector group 54;

a fault record detection table 60; an indicator light 70;

a first spacer 01; a first isolation portion 011; a first plate 0111; a second plate 0112; a third plate 0113; a first connection part 012; a second connection portion 013;

a second separator 02;

a third spacer 03; a mounting assembly 80; a first mounting frame 81; a second mounting frame 82; a third mounting frame 83;

a first wire binder 91; a second wire binder 92.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is to be understood that the described embodiments are preferred embodiments of the utility model and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without creative efforts, are within the protection scope of the present utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the utility model.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Referring to fig. 1 to 8, fig. 1 to 8 show a starter box including a box body 10, an elastic shielding member 04, a box cover 20, a copper bar assembly 30, a bus bar connector 40, an electronic assembly 50, a fault log detection table 60, an indicator lamp 70, a first spacer 01, a second spacer 02, a third spacer 03, a mounting assembly 80, a first wire binder 91, and a second wire binder 92.

The case 10 extends along a first direction and is opened along a second direction, and two ends of the case along the first direction are respectively provided with an input end and an output end; a first area 101 and a second area 102 are distributed in the box body 10 along a first direction corresponding to the opening, and the second area 102 is close to the output end of the box body 10; the first region 101 includes a first portion 1011 and a second portion 1012 arranged in a first direction, the first portion 1011 being adjacent to an input end of the case 10. Referring to fig. 6, the first portion 1011 is located at the left end of the case 10 and the second region 102 is located at the right end of the case 10.

Specifically, the case 10 is of a cuboid structure, the length direction of the case 10 is a first direction, the width direction of the case 10 is a third direction, the depth direction of the case 10 is a second direction, that is, the first direction, the second direction and the third direction are orthogonal, as shown in fig. 8, an opening is formed in the front surface of the case 10, the opening is rectangular, the length direction of the opening is the first direction, and the width direction of the opening is the third direction. The box 10 is provided with a bottom wall 14 opposite to the opening and a first side wall 11 perpendicular to the third direction, two ends of the box 10 along the first direction are respectively provided with a second side wall 12 and a third side wall 13 perpendicular to the first direction, the second side wall 12 is provided with a first through hole 121 along the first direction, the third side wall 13 is provided with a second through hole 131 along the first direction, and the first through hole 121 and the second through hole 131 respectively form an input end and an output end of the box 10. Referring to fig. 8, the second and third sidewalls 12 and 13 are located at left and right ends of the case 10, respectively, and the first sidewall 11 is located at an upper end of the case 10.

The elastic shielding member 04 is provided with a slit along the first direction, and is mounted on the case 10 at the edge of the first through hole 121 and is used for shielding the first through hole 121. In this embodiment, the first through hole 121 is rectangular, the length direction of the first through hole 121 is the third direction, the elastic shielding member 04 is two rows of brushes arranged in opposite directions, the fixing portion of the brushes is fixedly connected to the wall of the first through hole 121 extending along the third direction, and the gap is formed between the two rows of brushes.

A cover 20 is coupled to the case 10 and serves to open or close the opening. Specifically, the cover 20 is provided with a fixed portion 21 and a movable portion 22, the fixed portion 21 is covered on the opening corresponding to the second area 102, and the movable portion 22 is adapted to open or close the opening corresponding to the first area 101. Specifically, the movable portion 22 includes a first cover 221 and a second cover 222, the first cover 221 is adapted to be covered on an opening corresponding to the first portion 1011, the second cover 222 is adapted to be covered on an opening corresponding to the second portion 1012 and forms a connection structure 200 with the case 10, and the first cover 221 and the second cover 222 are rotatably connected at an end far from the fixed portion 21, and a rotation axis thereof extends along a third direction; the connection structure 200 is configured to slidably engage the second cover 222 with the case 10 such that the second cover 222 is adapted to rest in the first, second and third positions; when the second cover 222 is stopped at the first position and the first cover 221 is level with the second cover 222, the second cover 222 is close to the box 10 and covers the opening corresponding to the second portion 1012, and the first cover 221 is close to the box 10 and covers the opening corresponding to the first portion 1011, that is, the movable portion 22 covers the opening corresponding to the first area 101; when the second cover 222 is parked at the second position, the second cover 222 is far away from the case 10 and is away from the fixing portion 21, and the second cover 222 covers the opening corresponding to the second portion 1012; when the second cover 222 is parked at the third position, the second cover 222 is away from the case 10 and away from the fixing portion 21, and the second cover 222 opens the opening corresponding to the second portion 1012.

Specifically, the fixing portion 21 protrudes from the opening of the case 10 corresponding to the second area 102, in this embodiment, the fixing portion 21 is recessed toward the inside of the case 10 to form a groove with an opening facing the inside of the case 10, that is, the outer surface of the fixing portion 21 protrudes outwards.

Specifically, the connection structure 200 includes two first connection members 201, one second connection member 202, and two fixing members 203 in the present embodiment. As shown in fig. 2-3, the two first connecting pieces 201 are fixedly connected with the box 10 at edges of the opening and are arranged side by side along the third direction, the two first connecting pieces 201 are fixedly connected with the box 10 at upper and lower edges of the opening corresponding to the second portion 1012, a first chute 2011 extending along the first direction and two second chutes 2012 communicating with the first chute 2011 are arranged at a portion, extending out of the box 10, of each first connecting piece 201, a second chute 2012 communicating with the first chute 2011, the two second chutes 2012 are distributed along the first direction, the second chute 2012 extends from the first chute 2011 along the second direction towards the inside of the box 10, the second chute 2012 communicates with the first chute 2011 at one end, far away from the fixing portion 21, of the first chute 2011 has a fifth position 20111 connected with the second chute 2012 and a sixth position 20112 far away from the fifth position 20111 and close to the fixing portion 21, and the second chute 2012 has a fourth position 20121 far away from the fifth position 20111.

As shown in fig. 2-3, the second connecting piece 202 is fixedly connected with the second cover 222 and is provided with sliding parts 2021 corresponding to the second sliding grooves 2012 in number and one by one, and in this embodiment, the second connecting piece 202 is provided with 4 sliding parts 2021; the sliding portion 2021 is slidably disposed in the first chute 2011 and the second chute 2012, and is adapted to move between a fourth position 20121, a fifth position 20111 and a sixth position 20112, and is in limited connection with the first connecting member 201 along any direction perpendicular to the first direction when sliding in the first chute 2011, and is in limited connection with the first connecting member 201 along any direction perpendicular to the second direction when sliding in the second chute 2012; when the sliding portion 2021 slides to the fourth position 20121, the second cover 222 is stopped at the first position, and when the second cover 222 is stopped at the first position, the second cover 222 is flush with the fixing portion 21; when the sliding portion 2021 slides to the fifth position 20111, the second cover 222 rests at the second position; when the slide portion 2021 slides to the sixth position 20112, the second cover 222 rests at the third position.

The two fixing pieces 203 are respectively connected with the second cover 222 in a rotating manner along the third direction at two ends of the second cover 222, the rotation axis of the fixing piece 203 extends along the first direction, the fixing piece 203 is suitable for being overlapped on the first connecting piece 201 and covering the first chute 2011 and the second chute 2012 when the sliding portion 2021 slides to the fourth position 20121, and is fixedly connected with the portion of the first connecting piece 201 extending out of the box 10, so that the second cover 222 can be firmly covered on the opening corresponding to the second portion 1012, and the first chute 2011 and the second chute 2012 are shielded, thereby being more attractive.

An elastic clamping structure is arranged between the edge, close to the opening, of the first portion 1011 of the first region 101 of the box body 10 and the first cover 221, and the elastic clamping structure comprises a clamping groove 122 and an elastic clamp 2211; the clamping groove 122 is formed in the box body 10, the elastic buckle 2211 is formed in the first cover body 221, specifically, the clamping groove 122 is formed in the upper end and the lower end of the second side wall 12, the elastic buckle 2211 is formed in the upper end and the lower end of the first cover body 221, which are far away from one end of the fixing portion 21, and the elastic clamping structure is arranged, so that the first cover body 221 is more time-saving and labor-saving to open or close, and the structure is simple and easy to achieve.

As shown in fig. 4-5, the copper bar assembly 30 is installed in the case 10 and includes a neutral bar 31, a ground bar 32, an input bar group 33, and an output bar group 34; the zero line row 31 and the ground line row 32 are arranged along the third direction; the input row group 33 and the output row group 34 are arranged along the first direction and are both located between the neutral row 31 and the ground row 32; the input row group 33 is close to the input end of the box body 10 and is provided with a live wire wiring terminal group 331 towards the input end of the box body 10, the zero line row 31 is provided with a zero line wiring terminal 311 towards the input end of the box body 10, and the ground line row 32 is provided with a ground line wiring terminal 321 towards the input end of the box body 10; the output bank 34 is adjacent to the output end of the cabinet 10. Specifically, input bank set 33 includes three fire line input banks and output bank set 34 includes three fire line output banks.

The bus connector 40 is installed on the box 10 and is connected to one end of the output row group 34, the zero line row 31 and the ground line row 32, which is close to the output end of the box 10, in this embodiment, the bus connector 40 is connected to one end of the output row group 34, the zero line row 31 and the ground line row 32, which is close to the output end of the box 10, in the second area 102; in particular, the bus connector 40 extends out of the box 10 through the second through hole 131 and is adapted to the shape of the second through hole 131, the bus connector 40 is fixedly connected to the third sidewall 13, and the bus connector 40 is structurally stable and is suitable for being connected to the output end of the terminal bus and copper bar assembly 30.

As shown in fig. 5 to 6, the electronic component 50 is mounted in the case 10 and includes a first electric unit 51 and a second electric unit 52 arranged in a third direction, and the electronic component 50 further includes an input side detector group 53 and an output side detector group 54; the first electrical unit 51 is located between the input row group 33 and the output row group 34 and has both ends in the first direction connected to the input row group 33 and the output row group 34, respectively; the second electrical unit 52 and the ground line row 32 are arranged along the second direction, and the second electrical unit 52 is positioned at one side close to the opening of the box body 10, and the second electrical unit 52 comprises a lightning arrester 521, a lightning gap 522, a fuse 523 and a three-phase smart meter 524 which are arranged along the first direction in sequence; the input side detector group 53 comprises three input side detectors which are respectively sleeved on the three live wire input rows to detect the current of the input row group 33; the output side detector set 54 includes three output side detectors that are respectively sleeved on the three live output lines to detect the current of the output line set 34. The first electrical unit 51 is a circuit breaker, and the input end and the output end of the lightning protection air switch 522 are respectively positioned at two ends of the first electrical unit 51 along the third direction, and the input end of the lightning protection air switch 522 is close to the first electrical unit 51; the input and output ends of the lightning protection device 521 are located at both ends thereof in the third direction, respectively, and the input end of the lightning protection device 521 faces away from the first electrical unit 51. In fig. 5-6, the input end and the output end of the lightning protection air switch 522 are respectively positioned at the lower end and the upper end, namely, the lower inlet and the upper outlet; the input end and the output end of the lightning protection device 521 are respectively positioned at the upper end and the lower end thereof, namely, the upper inlet and the lower outlet.

The fault log detection gauge 60 and the indicator lamp 70 are fixedly connected to the outer wall of the fixing portion 21.

In the present embodiment, referring to fig. 6, the first electrical unit 51, the lightning arrester 521, the lightning hollow switch 522, and the fuse 523 are all located in the first area 101; the three-phase smart meter 524 spans the first area 101 and the second area 102 and is arranged in the box body 10 so as to be convenient for wiring the three-phase smart meter 524 when the opening of the first area 101 is opened, namely in practical application, the wiring terminal of the three-phase smart meter 524 can be arranged in the first area so as to be convenient for wiring; the layout of the electronic assembly 50 may make the signal or connection line distance between devices shorter and more aesthetically pleasing. The end of the copper bar assembly 30 where the terminal is located in the first portion 1011 of the first region 101.

The electrical connection relationship of the electronic devices inside the start box is as follows:

the fuse 523, the three-phase smart meter 524, the fault recording detection meter 60 and the indicator lamp 70 are all powered by the copper bar assembly 30, which is a prior art, and this embodiment will not be described in detail.

The input end of the lightning protection air switch 522 is connected with the output row group 34 and the zero line row 31, the input end of the lightning protection device 521 is connected with the output end of the lightning protection air switch 522, and the output end of the lightning protection device 521 is connected with the ground wire row 32; the fault wave recording detection table 60 is connected into the output row group 34 through a fuse 523 to collect the voltage of the output row group 34; the three-phase smart meter 524 is connected to the output bank 34 through the fuse 523 to collect the voltage of the output bank 34. It can be seen that the connection distance between the lightning protection air switch 522 and the output row group 34 and the zero line row 31 is short, the connection distance between the output end of the lightning protection air switch 522 and the input end of the lightning protection device 521 is short, and the connection distance between the output end of the lightning protection device 521 and the ground line row 32 is short, so that the lightning protection air switch is more attractive and meets the safety requirements.

The input side detector group 53 is in signal connection with the fault record detection table 60, and the output side detector group 54 is in signal connection with the three-phase smart meter 524. That is, the fault log detection table 60 may collect the current of the input bank 33 and the voltage of the output bank 34, and the three-phase smart meter 524 may collect the current of the output bank 34 and the voltage of the output bank 34. The fault wave recording detection table 60 and the indicator lamp 70 are arranged on the fixing part 21, so that maintenance personnel can conveniently know the internal operation condition of the starting end box in real time.

The first separator 01 is fixedly connected to the case 10 and shields the output row group 34 and the output side detector group 54, specifically, as shown in fig. 7, the first separator 01 includes a first separator 011, a first connection 012, and a second connection 013 fixedly connected to each other; the first isolation portion 011 shields the output row group 34 and the output side detector group 54 from the side facing the opening of the casing 10; the first connection portion 012 and the second connection portion 013 extend from both ends of the first isolation portion 011 in the second direction toward the inside of the case 10, the first connection portion 012 is fixedly connected to the bottom wall 14 of the case 10 through a gap between the output row group 34 and the ground line row 32, and the second connection portion 013 is fixedly connected to the bottom wall 14 of the case 10 through a gap between the output row group 34 and the zero line row 31. The first isolation portion 011 is formed in a "Z" shape, and includes a first plate 0111, a second plate 0112 and a third plate 0113, the first plate 0111 and the third plate 0113 are perpendicular to the second direction, the second plate 0112 connects the first plate 0111 and the third plate 0113, and the first plate 0111 and the third plate 0113 cooperate to shield the output row group 34 and the output side detector group 54 toward the opening side of the case 10; the first and second connection portions 012 and 013 extend from both ends (upper and lower ends) of the first plate 0111 in the third direction into the case 10 and are fixedly connected to the bottom wall 14 of the case 10. Because the frequency of the maintenance of the fuse 523 is higher, the first isolating piece 01 is arranged so that maintenance personnel can not touch the output row group 34 and the output side detector group 54 when the fuse 523 is replaced, the safety is improved, the structure of the first isolating piece 01 is simple to use, the space inside the starting end box can not be occupied, the first connecting part 012 can separate the output row group 34 from the ground wire row 32, and the second connecting part 013 can separate the output row group 34 from the zero wire row 31, so that the safety requirements are met. The Z-shaped structure of the first isolation portion 011 makes the structure more stable, and makes the first isolation portion 011 approach to the output row group 34 and the output side detector group 54, so that the space occupied in the case 10 is further reduced.

As shown in fig. 4, the second separator 02 is disposed between two adjacent fire wire input rows; the third separator 03 is arranged between two adjacent live wire output rows; the first electric unit 51 is provided with first dovetail grooves 511 equal in number to the second spacers 02 and second dovetail grooves 512 equal in number to the third spacers 03 at both ends in the first direction, respectively; in this embodiment, the number of the second isolating pieces 02, the third isolating pieces 03, the first dovetail grooves 511 and the second dovetail grooves 512 is two, the second isolating pieces 02 are provided with a first clamping part matched with the first dovetail grooves 511 and a second isolating part integrally formed with the first clamping part, the second isolating part is located between two adjacent live wire input rows, and in specific application, the second isolating part is perpendicular to the third direction and avoids the input side detector; the third separator 03 is provided with a second clamping portion matched with the second dovetail groove 512 and a third separating portion integrally formed with the second clamping portion, and the third separating portion is located between two adjacent live wire output rows, and in specific application, the third separating portion is perpendicular to the third direction and avoids the output side detector. The structure of the third separator 03 is substantially the same as that of the second separator 02, and will not be described here. The arrangement of the second separator 02 and the third separator 03 ensures that the live wire input row meets the safety requirements and the live wire output row meets the safety requirements, thereby ensuring that the starting end box is safer; the second separator 02 is clamped with the first dovetail groove 511 so as to be placed between two adjacent live wire input rows, and the third separator 03 is clamped with the second dovetail groove 512 so as to be placed between two adjacent live wire output rows, so that the structure is ingenious, and the installation and the disassembly are easy.

Referring to fig. 8, the mounting assembly 80 includes a first mounting bracket 81 fixedly coupled to the bottom wall 14 and a second mounting bracket 82 fixedly coupled to the first side wall 11, the first electrical unit 51 and the copper bar assembly 30 are fixedly coupled to the first mounting bracket 81, and the second electrical unit 52 is fixedly coupled to the second mounting bracket 82. In this embodiment, the number of the first installation frames 81 is two, two first installation frames 81 are arranged along the first direction, the number of the second installation frames 82 is three, three second installation frames 82 are arranged along the first direction, the second installation frames 82 and the first installation frames 81 are arranged along the second direction, and the second installation frames 82 are located on one side close to the opening of the box body 10 relative to the first installation frames 81. The mounting assembly 80 further includes a third mounting bracket 83 extending in the first direction; the third mounting frame 83 is fixedly connected to two adjacent second mounting frames 82; the lightning arrester 521, the lightning arrester hollow switch 522 and the fuse 523 are indirectly fixedly connected with the second mounting frame 82 through the third mounting frame 83; the three-phase smart meter 524 is directly affixed to the second mount 82. The arrangement of the mounting assembly 80 makes it possible to stably mount the electrical assembly and the copper bar assembly 30 without changing the size of the starting end box 10, which is more convenient.

The first wire binding device 91 extends along the first direction and is fixedly connected to the first side wall 11, a plurality of wire binding holes formed along the second direction are formed in the first wire binding device 91, the second wire binding device 92 extends along the third direction and is close to the output end of the box body 10 and is fixedly connected to the bottom wall 14 of the box body 10, wire binding holes formed along the first direction are formed in the second wire binding device 92 along the third direction, and in the embodiment, the arrangement of the first wire binding device 91 and the second wire binding device 92 is convenient for arranging the wires, attractive in appearance and free of occupation of the inner space of the initial box.

The input cable of the main power supply is connected to the live wire wiring terminal group 331, the neutral wire wiring terminal 311 and the ground wire wiring terminal 321 through the input end of the box body 10, the busbar connector 40 is connected to the tail end busbar through the output end of the box body 10, and the extending direction of the tail end busbar is generally the first direction, so that the electronic component 50 in the starting end box can be intuitively presented to maintenance personnel, specifically, the first electrical unit 51 is positioned between the input row group 33 and the output row group 34, namely, the input row group 33, the first electrical unit 51 and the output row group 34 are arranged along the first direction, the first electrical unit 51 and the second electrical unit 52 are arranged along the third direction, the whole is more intuitive, the detection and maintenance are convenient, and the temperature sensor is conveniently arranged on the copper row assembly 30 to collect the temperature; the second electrical unit 52 and the ground wire row 32 are arranged along the second direction, so that the lightning protection device 521 is conveniently connected into the ground wire row 32, and the wiring distance is shortened; the lightning arrester 521, the lightning arrester open 522, the fuse 523 and the three-phase intelligent ammeter 524 are sequentially arranged along the first direction, so that the wiring distance is short, and the safety requirements are met; it can be seen that, by adopting the technical scheme, the overall layout in the starting end box is visual and concise, the maintenance is convenient, the wiring distance between the devices is short, and the safety problem is avoided.

The fixing portion 21 is covered on the opening corresponding to the second area 102, and the second area 102 is close to the output end of the box 10, that is, the opening corresponding to the first area 101 of the box 10 can be opened, so that the connection of the live wire connection terminal group 331, the neutral wire connection terminal 311 and the ground wire connection terminal 321 is facilitated. The input cable of the main power supply can pass through the gap of the elastic shielding piece 04 to be connected with the wiring terminal of the copper bar assembly 30, and the elastic shielding piece 04 can protect the inside of the starting end box before or after the connection of the cable.

The movable part 22 comprises a first cover 221 and a second cover 222, the first cover 221 and the second cover 222 are connected in a rotating way at one end far away from the fixed part 21, and the rotating axis of the first cover 221 and the second cover 222 extends along a third direction, so that the inside of the initial end box can be maintained only by opening the first cover 221 to partially open the opening, in practical application, when an input cable of a main power supply is connected with a terminal of the copper bar assembly 30, the first cover 221 is opened, when a breaker is required to be controlled or a fuse 523 is required to be replaced, the second cover 222 is opened, namely, the part with the highest use frequency or maintenance frequency corresponds to the first cover 221, the electronic device with the highest maintenance frequency corresponds to the second cover 222, the electronic device with the lowest maintenance frequency is arranged in the second area 102 so as to be convenient for maintenance, and the split design of the movable part 22 is more flexible and has stronger suitability; in the initial state, the distance between the first cover 221 and the second cover 222 and the case 10 is shortest and there is no gap, that is, the first cover 221 is located at the first position and covers the opening corresponding to the first portion 1011, the second cover 222 covers the opening corresponding to the second portion 1012, and the movable portion 22 is in the closed state; when maintenance is required in the start box, if the input cable of the main power supply is connected to the connection terminal of the copper bar assembly 30, the first cover 221 is opened; if the circuit breaker needs to be controlled or the fuse 523 needs to be replaced, after the first cover 221 is opened, the second cover 222 slides to the third position relative to the case 10, and the second cover 222 does not cover the opening corresponding to the second portion 1012, so that the opening corresponding to the second portion 1012 is also opened. That is, the movable portion 22 does not need to be entirely opened, and the opening of the casing 10 can be opened in batches by the cooperation of rotation and sliding, so that less space is required for maintenance.

The foregoing description of the embodiments and description is presented to illustrate the scope of the utility model, but is not to be construed as limiting the scope of the utility model. Modifications, equivalents, and other improvements to the embodiments of the utility model or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the utility model or the teachings of the embodiments, are intended to be included within the scope of the utility model, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.

Claims (10)

1. A start box is characterized by comprising

The box body extends along a first direction and is opened along a second direction, and an input end and an output end are respectively arranged at two ends of the box body along the first direction;

a case cover connected to the case body and for opening or closing the opening;

the copper bar assembly is arranged in the box body and comprises a zero line bar, a ground line bar, an input bar group and an output bar group; the zero line row and the ground line row are arranged along a third direction; the input row group and the output row group are distributed along the first direction and are positioned between the zero line row and the ground line row; the input row group is close to the input end of the box body and faces the input end of the box body, a live wire wiring terminal group is arranged on the input end of the zero line row facing the box body, a zero line wiring terminal is arranged on the input end of the zero line row facing the box body, and a ground wire wiring terminal is arranged on the ground line row facing the input end of the box body; the output row group is close to the output end of the box body; the first direction, the second direction and the third direction are orthogonal;

The bus connector is arranged on the box body and is connected with one end, close to the output end of the box body, of the output row group, the zero line row and the ground line row; and

an electronic component installed in the case and including a first electrical unit and a second electrical unit arranged along a third direction; the first electrical unit is positioned between the input row group and the output row group, and two ends of the first electrical unit along the first direction are respectively connected into the input row group and the output row group; the second electrical unit and the ground wire row are distributed along a second direction, and the second electrical unit is located at one side close to the opening of the box body.

2. The head box of claim 1, further comprising a fault log detection gauge and an indicator light;

a first area and a second area are distributed in the box body along a first direction corresponding to the opening, and the second area is close to the output end of the box body;

the box cover is provided with a fixed part and a movable part, the fixed part is covered on the opening corresponding to the second area, and the movable part is suitable for opening or closing the opening corresponding to the first area;

the fault wave recording detection meter and the indicator lamp are fixedly connected to the fixing part;

the second electrical unit comprises a lightning protection device, a lightning protection air switch, a fuse and a three-phase intelligent ammeter which are sequentially arranged along a first direction;

The fuse, the three-phase intelligent ammeter, the fault wave recording detection meter and the indicator lamp are powered by the copper bar assembly;

the input end of the lightning protection device is connected with the output row group and the zero line row, the input end of the lightning protection device is connected with the output end of the lightning protection device, and the output end of the lightning protection device is connected with the ground wire row; the fault wave recording detection table is connected to the output row group through the fuse; the three-phase intelligent ammeter is connected into an output row group through the fuse;

the electronic assembly further includes an input side detector set and an output side detector set; the input side detector group is used for detecting the current of the input row group and is connected with the fault wave recording detection meter through signals, and the output side detector group is used for detecting the current of the output row group and is connected with the three-phase intelligent ammeter through signals.

3. A start tank as set forth in claim 2, further comprising a first spacer; the bus connector is connected to one end, close to the output end of the box body, of the output row group, the zero line row and the ground line row in the second area; the first electrical unit, the lightning protector, the lightning protection air switch and the fuse are all positioned in a first area; the three-phase intelligent ammeter spans the first area and the second area and is arranged in the box body;

The first separator is fixedly connected to the box body and shields one side, facing the opening, of the output row group and the output side detector group.

4. A start-end box according to claim 3, wherein said first spacer comprises a first spacer portion, a first connecting portion and a second connecting portion fixedly connected to each other; the first isolation part shields one side of the output row group and the output side detector group, which faces the opening; the first connecting part and the second connecting part extend from the two ends of the first isolation part along the third direction to the inside of the box body respectively, the first connecting part passes through a gap between the output row group and the ground wire row to be fixedly connected with the box body, and the second connecting part passes through a gap between the output row group and the zero line row to be fixedly connected with the box body.

5. The head box of claim 4, further comprising a second spacer and a third spacer;

the input row group comprises three live wire input rows; the output row group comprises three live wire output rows;

the input side detector group comprises three input side detectors which are respectively sleeved on three live wire input rows; the output side detector group comprises three output side detectors which are respectively sleeved on the three live wire output rows;

The second separator is arranged between two adjacent live wire input rows;

the third separator is arranged between two adjacent live wire output rows.

6. The start box according to claim 5, wherein the first electrical unit is provided with first dovetail grooves and second dovetail grooves at both ends in the first direction, the number of the first dovetail grooves being equal to the number of the second spacers, and the number of the second dovetail grooves being equal to the number of the third spacers, respectively; the second isolating piece is provided with a first clamping part matched with the first dovetail groove and a second isolating part integrally formed with the first clamping part, and the second isolating part is positioned between two adjacent live wire input rows; the third isolation piece is provided with a second clamping part matched with the second dovetail groove and a third isolation part integrally formed with the second clamping part, and the third isolation part is positioned between two adjacent live wire output rows.

7. The head box of claim 6, further comprising a mounting assembly; the box body is provided with a bottom wall opposite to the opening and a first side wall which is close to the ground wire row and vertical to a third direction; the mounting assembly comprises a first mounting frame fixedly connected to the bottom wall and a second mounting frame fixedly connected to the first side wall;

The first electrical unit and the copper bar assembly are fixedly connected to the first mounting frame, and the second electrical unit is fixedly connected to the second mounting frame.

8. The starting end box according to claim 7, further comprising a first wire binding device extending along a first direction and a second wire binding device extending along a third direction, wherein the first wire binding device is fixedly connected to the first side wall, and the second wire binding device is fixedly connected to the bottom wall of the box body near the output end of the box body; the first electrical unit is a circuit breaker; the input end and the output end of the lightning protection air switch are respectively positioned at two ends of the lightning protection air switch along the third direction, and the input end of the lightning protection air switch is close to the first electrical unit; the input end and the output end of the lightning protection device are respectively positioned at two ends of the lightning protection device along the third direction, and the input end of the lightning protection device deviates from the first electric unit.

9. The starting end box according to claim 1, wherein two ends of the box body along a first direction are respectively provided with a second side wall and a third side wall which are perpendicular to the first direction, the second side wall is provided with a first through hole along the first direction, the third side wall is provided with a second through hole along the first direction, and the first through hole and the second through hole respectively form an input end and an output end of the box body;

Also comprises an elastic shielding piece; the elastic shielding piece is provided with a gap along a first direction, and the edge of the elastic shielding piece, which is positioned on the box body, is used for shielding the first through hole; the bus connector penetrates through the second through hole to extend out of the box body and is matched with the shape of the second through hole, and the bus connector is fixedly connected to the third side wall.

10. The start box as set forth in claim 2, wherein the fixing portion protrudes from the box body cover and is disposed on the opening corresponding to the second area;

the first area comprises a first part and a second part which are distributed along a first direction, and the first part is close to the input end of the box body;

the movable part comprises a first cover body and a second cover body, the first cover body is suitable for being covered on an opening corresponding to the first part, the second cover body is suitable for being covered on an opening corresponding to the second part and forms a connecting structure with the box body, one ends of the first cover body and the second cover body, which are far away from the fixed part, are rotationally connected, and the rotation axis of the first cover body and the second cover body extends along a third direction;

the connecting structure is configured to enable the second cover body to be in sliding fit with the box body, so that the second cover body is suitable for being parked at the first position, the second position and the third position;

When the second cover body is stopped at the first position and the first cover body is level with the second cover body, the second cover body is close to the box body and covers the opening corresponding to the second part, and the first cover body is close to the box body and covers the opening corresponding to the first part;

when the second cover body is stopped at the second position, the second cover body is far away from the box body and is avoided from the fixing part, and the second cover body shields the opening corresponding to the second part;

when the second cover body is stopped at the third position, the second cover body is far away from the box body and is avoided from the fixing part, and the second cover body opens the opening corresponding to the second part.