CN114179736A

CN114179736A - Chassis electrical box

Info

Publication number: CN114179736A
Application number: CN202111393122.8A
Authority: CN
Inventors: 李锋; 麻育淼
Original assignee: Zhejiang Xingpu Automobile Technology Co ltd
Current assignee: Zhejiang Xingpu Automobile Technology Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-03-15

Abstract

The application relates to the technical field of electric appliance boxes, and discloses a chassis electric appliance box which comprises a base and an upper cover, wherein the base and the upper cover are detachably connected through at least two mounting bolts, a protective assembly for protecting the mounting bolts is connected to the side wall of the upper cover, the protective assembly comprises a protective cover with an opening on one side, a positioning block fixed to one side, close to the mounting bolts, of the protective cover, and a positioning elastic sheet connected to the positioning block, one end, close to the mounting bolts, of the positioning elastic sheet is fixedly connected to the positioning block, and the other end of the positioning elastic sheet extends to one side far away from the positioning block; the locating groove that supplies the locating piece embedding is seted up on the lateral wall of upper cover, set up the draw-in groove that supplies the location shell fragment card to go into on the cell wall of locating groove, be connected with the driving piece that is used for driving the location shell fragment to shift out the draw-in groove in the upper cover. This application has the effect that can effectively ensure base and upper cover joint strength.

Description

Chassis electrical box

Technical Field

The application relates to the technical field of electrical boxes, in particular to a chassis electrical box.

Background

The electric appliance box is used as a carrier of a relay and a fuse, is used for distributing large current from a storage battery or a control switch into small current to be transmitted to each electric appliance, and can protect the electric appliance, a lead, a switch and other devices. The chassis electrical box is usually installed on the chassis of the automobile and is responsible for power distribution of the whole automobile, and the reliability of the chassis electrical box directly influences the electrical safety of the whole automobile.

At present, the chassis electrical box on the market generally comprises a base and an upper cover, and the base and the upper cover are detachably connected through mounting bolts. However, since the chassis electrical box is located outside the cab when being assembled on the chassis, and the outdoor environment is complicated, if the mounting bolt is in a humid environment for a long time or is soaked in water, the mounting bolt is easily corroded, which results in a decrease in the connection strength between the base and the upper cover, and needs to be improved.

Disclosure of Invention

In order to ensure the joint strength of base and upper cover, this application provides a chassis electrical apparatus box.

The application provides a chassis electrical apparatus box adopts following technical scheme:

a chassis electrical box comprises a base and an upper cover, wherein the base and the upper cover are detachably connected through at least two mounting bolts, the side wall of the upper cover is connected with a protection assembly for protecting the mounting bolts, the protection assembly comprises a protection cover with an opening at one side, a positioning block fixed on one side of the protection cover close to the mounting bolts and a positioning elastic sheet connected to the positioning block, one end of the positioning elastic sheet close to the mounting bolts is fixedly connected to the positioning block, and the other end of the positioning elastic sheet extends to one side far away from the positioning block; the locating groove that supplies the locating piece embedding is seted up on the lateral wall of upper cover, set up the draw-in groove that supplies the location shell fragment card to go into on the cell wall of locating groove, be connected with the driving piece that is used for driving the location shell fragment to shift out the draw-in groove in the upper cover.

By adopting the technical scheme, after the base and the upper cover are connected in place through the mounting bolt, the protective cover is moved to enable the positioning block to be embedded into the positioning groove, and the positioning elastic sheet is pressed by the positioning groove to deform and generate elasticity; after the positioning elastic sheet is aligned with the clamping groove, the positioning spring can reset to the clamping groove under the elastic action of the positioning spring, so that the protective cover is prevented from moving to one side far away from the positioning groove. The protection casing is located the outside of construction bolt this moment for reduce the area of contact of construction bolt and external environment, make the construction bolt difficult by the corrosion, thereby effectively ensure the joint strength of base and upper cover.

When the electrical components between base and upper cover are overhauld and assembled, operating personnel accessible driving piece makes the location shell fragment shift out the draw-in groove, moves the protection casing to the one side of keeping away from the locating piece this moment, alright make the locating piece shift out the constant head tank, the protection casing is opened to the mounting bolt, split base and upper cover are unscrewed.

Optionally, a fixing groove communicated with the clamping groove is formed in the groove wall of the positioning groove, the driving piece comprises a driving rod arranged in the fixing groove in a sliding mode, and one end, far away from the positioning groove, of the driving rod extends out of the upper cover.

By adopting the technical scheme, after the positioning elastic sheet extends into the clamping groove, an operator can eject the positioning elastic sheet out of the clamping groove through the exposed driving rod, and the operation is simple and convenient.

Optionally, the driving member further comprises a pressing block fixed on one side, far away from the positioning groove, of the driving rod and a driving spring arranged between the pressing block and the upper cover, and when the driving spring is in a natural state, the driving rod is separated from the clamping groove.

Through adopting above-mentioned technical scheme, loosen the briquetting after, drive spring can make the actuating lever reset to the state with the draw-in groove separation to drive rod influence the block of location shell fragment and draw-in groove, the stability of protection casing is high.

Optionally, a rubber pad is fixedly connected to a groove wall of the positioning groove, on which the fixing groove is not formed.

Through adopting above-mentioned technical scheme, the rubber pad pressurized can produce elastic deformation when the locating piece stretches into the constant head tank to support tight locating piece, play the effect that improves the stability of locating piece when inlaying in the constant head tank, make the protection casing difficult to open, protective effect is good.

Optionally, a yielding groove into which the positioning elastic sheet can deform and stretch is formed in the side wall of the positioning block, and the fixing ends of the positioning elastic sheet and the positioning block are located in the yielding groove.

Through adopting above-mentioned technical scheme, the groove of stepping down can supply the location shell fragment deformation to stretch into to reduce the holistic occupation space of protection component, help improving the compact structure degree of electrical apparatus box.

Optionally, the protection casing passes through the articulated elements with the upper cover and articulates, the articulated elements includes pivot of fixed connection on the protection casing and sets up two articulated seats at the upper cover lateral wall relatively, two the hinge hole has been seted up respectively to the terminal surface that articulated seat is relative, the pivot is rotated and is worn to establish in the hinge hole.

By adopting the technical scheme, the protective cover is hinged with the upper cover, so that the protective cover and the upper cover can be connected into a whole, on one hand, the protective cover does not need to be completely removed when electrical elements are overhauled, and the protective cover is not easy to lose; on the other hand covers when closing the protection casing after overhauing, still has the effect of being convenient for align locating piece and constant head tank fast.

Optionally, both ends of the rotating shaft are respectively connected with a limiting part for blocking the rotating shaft and the hinge base to separate, the limiting part comprises a limiting elastic sheet fixedly connected to the circumferential side wall of the rotating shaft, limiting grooves for the limiting elastic sheet to deform and stretch into are respectively formed in both ends of the rotating shaft, and one end of the limiting elastic sheet is fixedly connected to the wall of each limiting groove while the other end of the limiting elastic sheet extends to one side far away from the limiting groove.

By adopting the technical scheme, when the protective cover is assembled on the upper cover, the limiting elastic sheet can be pressed into the limiting groove, and then the rotating shaft sequentially penetrates out of the hinge holes on the hinge seats; after loosening the limiting elastic sheet, the limiting elastic sheet can reset to the state of stretching out the limiting groove under the elastic action of the limiting elastic sheet, the limiting elastic sheets at the two ends of the rotating shaft are respectively positioned on one side of the two hinged seats which are opposite to each other, the effect of blocking the rotating shaft from being separated from the hinged seats is achieved, and the structure is simple and the operation is convenient.

Optionally, the outside cover of pivot is equipped with and is used for driving the protection casing to change to the torsional spring of open mode, the one end butt of torsional spring on the lateral wall of upper cover, other end fixed connection are on the circumference lateral wall of pivot.

Through adopting above-mentioned technical scheme, location shell fragment and draw-in groove separation back, the spring action of torsional spring can order about the protection casing and rotate to the one side of keeping away from the constant head tank voluntarily to make the protection casing keep the open mode. The protection casing is difficult for rotating at will when operating personnel overhauls, can not disturb the maintenance operation.

Optionally, the protective cover is rotatably connected with a movable plate which is obliquely arranged, and the movable plate is provided with a plurality of air holes; the inner wall of the protective cover is connected with an elastic barrier strip which is abutted against one side of the movable plate close to the opening of the protective cover.

Through adopting above-mentioned technical scheme, enclose between the lateral wall of fly leaf and protection casing and close and be formed with the cavity, this cavity can be used for placing the drying package that is used for the moisture absorption such as drier, and humid gas can get into by the drying package absorption in above-mentioned cavity by the bleeder vent to keep the inside of protection casing dry, delay the corrosion time of construction bolt. The movable plate is rotatably arranged in the protective cover, and after the original drying bag absorbs moisture and is saturated, the movable plate can be rotated to one side close to the opening of the protective cover, so that the movable plate extrudes the elastic barrier strip and rotates out of the protective cover, and the drying bag can be replaced conveniently. After the replacement is finished, the movable plate is rotated to one side close to the elastic barrier strip, so that the movable plate extrudes the elastic barrier strip again until the elastic barrier strip abuts against one side, close to the opening of the protective cover, of the movable plate, the elastic barrier strip plays a role in blocking the movable plate from rotating relative to the protective cover, and the stability of the movable plate is improved.

Optionally, a separation net is integrally formed on one side of the movable plate away from the opening of the protective cover, a plurality of separation grooves are formed between the separation net and the movable plate, and the wall of each separation groove is provided with the air holes.

Through adopting above-mentioned technical scheme, dry package can disperse deposit in above-mentioned independent separate groove to enlarge the moisture absorption scope of dry package, improve the moisture absorption effect.

In summary, the present application includes at least one of the following beneficial technical effects:

after the base and the upper cover are connected in place, the protective cover is rotated towards one side close to the positioning groove, so that the positioning block is embedded into the positioning groove, the positioning elastic sheet is clamped into the clamping groove, and the protective cover is positioned on the outer side of the mounting bolt at the moment and plays a role in protecting the mounting bolt from being rusted, thereby effectively ensuring the connection strength of the base and the upper cover;

when electrical elements assembled between the base and the upper cover are overhauled, the pressing block can be pressed towards one side close to the driving rod, so that the driving rod pushes the positioning elastic sheet out of the clamping groove, and at the moment, the torsional spring can drive the protective cover to rotate to an open state so as to screw out the mounting bolt;

a cavity for storing a drying bag is formed between the movable plate and the protective cover, and the drying bag can absorb moisture in the protective cover so as to delay the corrosion time of the mounting bolt and prolong the service life of the mounting bolt.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a partial schematic view of an embodiment of the present application.

Fig. 3 is a schematic partial cross-sectional view of an embodiment of the present application.

Description of reference numerals:

1. a base; 2. an upper cover; 21. positioning a groove; 22. a card slot; 23. a rubber pad; 24. fixing grooves; 25. a drop-proof groove; 3. installing a bolt; 4. a guard assembly; 41. a protective cover; 411. connecting blocks; 412. connecting holes; 413. an anti-drop block; 42. positioning blocks; 421. a yielding groove; 43. positioning the elastic sheet; 5. an articulation member; 51. a rotating shaft; 511. a limiting groove; 52. a hinged seat; 521. a hinge hole; 53. a torsion spring; 6. a limiting member; 61. a limiting elastic sheet; 7. a drive member; 71. a drive rod; 72. briquetting; 73. a drive spring; 8. a movable plate; 81. a separation net; 82. a separation tank; 83. air holes are formed; 9. an elastic barrier strip.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a chassis electrical box. Referring to fig. 1 and 2, the chassis electrical box comprises a base 1 and an upper cover 2, wherein the upper cover 2 is positioned right above the base 1. The base 1 and the upper cover 2 are detachably connected through a plurality of mounting bolts 3, specifically, the detachable mode is that the mounting bolts 3 penetrate through holes in the upper cover 2 and then are connected with the base 1 in a threaded mode, so that the base 1 and the upper cover 2 can be relatively fixed, and the electrical component is assembled in a closed cavity formed when the base 1 and the upper cover 2 are connected.

Referring to fig. 2 and 3, the side wall of the upper cover 2 is connected with protective assemblies 4 equal in number to the mounting bolts 3, and each protective assembly 4 is used for protecting the adjacent mounting bolt 3. Each group of protection components 4 comprises a protection cover 41, a positioning block 42 fixedly connected to one side of the protection cover 41 close to the mounting bolt 3 and a positioning elastic sheet 43 fixedly connected to the positioning block 42, and the protection cover 41 is made of elastic plastic capable of slightly deforming when being pressed, such as PVC. The side of the shield 41 adjacent the mounting bolt 3 is provided with an opening which can be used to receive the head of the mounting bolt 3. After the mounting bolt 3 is assembled in place, the operator can cover the protective cap 41 outside the head of the mounting bolt 3 to prevent the mounting bolt 3 from being corroded.

Referring to fig. 2 and 3, the protective cover 41 is hinged to the upper cover 2 through a set of hinge members 5, the hinge members 5 in this embodiment include a rotating shaft 51 fixedly connected to one end of the protective cover 41 and two hinge seats 52 welded to the side wall of the upper cover 2, two connecting blocks 411 are welded to the side wall of the protective cover 41, a connecting hole 412 is formed in the middle of the connecting block 411, and the rotating shaft 51 penetrates through the connecting hole 412 and is welded to the connecting block 411. Two articulated seats 52 are arranged oppositely, and the end surfaces of the two articulated seats 52 close to each other are respectively provided with an articulated hole 521, the aperture of the articulated hole 521 is slightly larger than the diameter of the rotating shaft 51, and the rotating shaft 51 rotates to penetrate through the two articulated holes 521, so that the protective cover 41 can rotate relative to the upper cover 2.

Referring to fig. 2 and 3, in order to make the rotating shaft 51 not easily separate from the hinge seat 52 when the rotating shaft 51 is subjected to a shock, a set of limiting members 6 are respectively disposed at two ends of the rotating shaft 51. Each set of the position limiting members 6 comprises two position limiting elastic pieces 61 fixedly connected to the rotating shaft 51, and the two position limiting elastic pieces 61 are circumferentially local along the central axis of the rotating shaft 51. Two limiting grooves 511 are formed in two ends of the circumferential side wall of the rotating shaft 51, the two limiting grooves 511 at the same end of the rotating shaft 51 correspond to the two limiting elastic sheets 61 in the limiting part 6 in the same group one by one, one end of each limiting elastic sheet 61 is fixedly connected to the groove wall of the limiting groove 511 adjacent to the limiting groove 61, and the other end of each limiting elastic sheet extends to one side far away from the limiting groove 511. The limiting elastic sheet 61 in this embodiment is made of a metal sheet capable of being bent and deformed, and when the limiting elastic sheet 61 is in a natural state without pressure, the end of the limiting elastic sheet 61 exceeds the rotating shaft 51. The distance between the two sets of limiting members 6 is greater than the distance between the two hinge bases 52, so that after the rotating shaft 51 is assembled in place, the two sets of limiting members 6 are respectively located on two opposite sides of the hinge bases 52, and the rotating shaft 51 is prevented from moving out of the hinge hole 521.

Referring to fig. 2 and 3, a torsion spring 53 is sleeved outside the rotating shaft 51, one end of the torsion spring 53 is fixedly connected to the side wall of the upper cover 2, and the other end of the torsion spring 53 is fixedly connected to the circumferential side wall of the rotating shaft 51. When the torsion spring 53 is in the natural state, the protection cover 41 is in the open state, which facilitates the operator to rotate the mounting bolt 3. After the assembly is in place, the protective cover 41 is covered on the outer side of the mounting bolt 3, one end of the torsion spring 53 can rotate along with the rotating shaft 51 and generate elastic deformation, and after the protective cover 41 is loosened, the elastic action of the torsion spring 53 can drive the protective cover 41 to automatically reset to an open state, so that the cover opening efficiency of the protective cover 41 is improved.

Referring to fig. 2 and 3, the side wall of the positioning block 42 is provided with a yielding groove 421, the size of the yielding groove 421 is larger than that of the positioning elastic sheet 43, one end of the positioning elastic sheet 43 close to the mounting bolt 3 is fixedly connected to the bottom wall of the yielding groove 421, and the other end of the positioning elastic sheet extends to one side far away from the positioning block 42. The positioning elastic sheet 43 in this embodiment is also made of a metal sheet capable of generating bending deformation, and when the positioning elastic sheet 43 is in a natural state, one end of the positioning elastic sheet 43 exceeds the positioning block 42; when the positioning elastic sheet 43 is pressed toward the receding groove 421, the positioning elastic sheet 43 deforms and is embedded into the receding groove 421.

Referring to fig. 2 and 3, a positioning groove 21 for the positioning block 42 to be rotatably embedded is formed in the side wall of the upper cover 2, a clamping groove 22 for the positioning block 42 to extend into is formed in the groove wall of the positioning groove 21, and the length of the clamping groove 22 is slightly greater than the length of the positioning elastic piece 43, and the width of the clamping groove 22 is slightly greater than the width of the positioning elastic piece 43. In the process of rotating the protective cover 41 to enable the positioning block 42 to be embedded into the positioning groove 21, the positioning elastic sheet 43 is firstly extruded by the positioning groove 21 to deform and generate elastic force, and after the positioning elastic sheet 43 is moved to be aligned with the clamping groove 22, the elastic force can drive the positioning elastic sheet 43 to reset into the clamping groove 22, so that the positioning block 42 is blocked from moving out of the positioning groove 21, and the stability of the protective cover 41 and the protective effect of the protective cover 41 on the mounting bolt 3 are improved.

Referring to fig. 2 and 3, in order to improve the stability of the positioning block 42 when being embedded into the positioning slot 21, a rubber pad 23 is fixedly connected to a groove wall of the positioning slot 21, and the rubber pad 23 is fixedly bonded to a groove wall of the positioning slot 21, which is not provided with the clamping slot 22, and can deform and press the positioning block 42 when the positioning block 42 is embedded into the positioning slot 21, so as to improve the stability of the positioning block 42 and the protective cover 41.

Referring to fig. 2 and 3, when electrical components mounted between the base 1 and the upper cover 2 are inspected, the protective cover 41 is opened to screw out the mounting bolt 3, thereby detaching the base 1 and the upper cover 2. In order to facilitate the opening of the protective cover 41, a driving member 7 for driving the positioning elastic sheet 43 to move out of the slot 22 is connected to the side wall of the upper cover 2. The driving member 7 includes a driving rod 71, a pressing block 72 fixed on one side of the driving rod 71 far from the positioning slot 21, and a driving spring 73 located between the pressing block 72 and the upper cover 2, the slot wall of the slot 22 far from the positioning slot 21 is provided with a fixing slot 24, and the driving rod 71 is slidably disposed in the fixing slot 24 and has one end extending out of the upper cover 2. The driving spring 73 is sleeved outside the driving rod 71, and one end of the driving spring 73 abuts against the pressing block 72, and the other end abuts against the upper cover 2. When the driving spring 73 is in a natural state, the driving lever 71 is separated from the card slot 22. When the protection cover 41 needs to be opened, an operator can press the pressing block 72 to one side close to the driving rod 71, so that the driving rod 71 moves to one side close to the positioning groove 21 until the driving rod 71 pushes the positioning elastic sheet 43 out of the clamping groove 22, and at the moment, the protection cover 41 can be rotated to one side far away from the positioning groove 21, so that the positioning block 42 moves out of the positioning groove 21, and the protection cover 41 is opened.

Referring to fig. 2 and 3, in order to further improve the stability of the shield 41 when the shield 41 is opened, the retaining block 413 is integrally formed on the side wall of the shield 41 away from the mounting bolt 3, the side wall of the upper cover 2 is provided with the retaining groove 25 into which the retaining block 413 is rotatably inserted, and the retaining block 413 is tightly pressed against the groove wall of the retaining groove 25 when being inserted into the retaining groove 25, so that the shield 41 is less likely to rotate.

Referring to fig. 3, the interior of the shield 41 is rotatably connected with a movable plate 8, the movable plate 8 is shorter than the interior of the shield 41, and the width of the movable plate 8 is slightly smaller than the interior of the shield 41, so that two sides of the movable plate 8 along the width direction thereof can abut against the inner wall of the shield 41. A separation net 81 is integrally formed on one side of the movable plate 8 away from the opening of the protective cover 41, a plurality of independent separation grooves 82 are formed between the separation net 81 and the movable plate 8, and a drying bag filled with a drying agent is placed in each separation groove 82. The wall of the separating groove 82 close to the opening of the protective cover 41 is provided with the air holes 83, and moisture in the inner cavity of the protective cover 41 can be absorbed by the drying bag through the air holes 83, so that the dryness of the inner cavity of the protective cover 41 is improved, and the time for rusting the mounting bolt 3 is delayed.

Referring to fig. 3, an elastic barrier 9 is fixedly connected between the inner walls of the two opposite sides of the protection cover 41, and the distance between the inner wall of the protection cover 41 far away from the opening of the protection cover and the elastic barrier 9 is greater than the thickness of the movable plate 8. The elastic barrier 9 in this embodiment is made of a rubber material capable of generating elastic deformation, and when the movable plate 8 is assembled in place, the elastic barrier 9 abuts against one side of the movable plate 8 close to the opening of the protective cover 41, so as to support and limit the movable plate 8. Since the mass of the drying bag is usually light, the elastic bars 9 are not easily compressed when only the weight of the movable plate 8 and the drying bag acts thereon. When the drying bag is saturated with moisture, the movable plate 8 is forcibly rotated toward the opening of the hood 41, and the movable plate 8 presses the elastic bars 9 and rotates out of the hood 41, so that a new drying bag can be replaced.

The implementation principle of a chassis electrical box in the embodiment of the application is as follows: base 1 and upper cover 2 are connected the back that targets in place through construction bolt 3, rotate protection casing 41 to the one side that is close to construction bolt 3 for in locating piece 42 embedding constant head tank 21, location shell fragment 43 stretches into draw-in groove 22, protection casing 41 is located the head outside of construction bolt 3 this moment, play the effect of protection construction bolt 3, make the difficult corrosion of construction bolt 3 and weaken its connection performance, thereby effectively ensure the joint strength of base 1 and upper cover 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a chassis electrical apparatus box, includes base (1) and upper cover (2), base (1) and upper cover (2) can dismantle the connection through at least two construction bolts (3), its characterized in that: the side wall of the upper cover (2) is connected with a protection component (4) for protecting the mounting bolt (3), the protection component (4) comprises a protection cover (41) with an opening at one side, a positioning block (42) fixed to one side, close to the mounting bolt (3), of the protection cover (41) and a positioning elastic sheet (43) connected to the positioning block (42), one end, close to the mounting bolt (3), of the positioning elastic sheet (43) is fixedly connected to the positioning block (42), and the other end of the positioning elastic sheet extends to one side far away from the positioning block (42); offer constant head tank (21) that supply locating piece (42) embedding on the lateral wall of upper cover (2), offer draw-in groove (22) that supply location shell fragment (43) card to go into on the cell wall of constant head tank (21), be connected with driving piece (7) that are used for driving location shell fragment (43) to shift out draw-in groove (22) in upper cover (2).

2. The chassis electrical box of claim 1, wherein: offer on the cell wall of constant head tank (21) with fixed slot (24) of draw-in groove (22) intercommunication, driving piece (7) are including sliding drive rod (71) of setting in fixed slot (24), the one end that constant head tank (21) were kept away from in drive rod (71) stretches out upper cover (2).

3. The chassis electrical box of claim 2, wherein: the driving piece (7) further comprises a pressing block (72) fixed on one side, away from the positioning groove (21), of the driving rod (71) and a driving spring (73) arranged between the pressing block (72) and the upper cover (2), and when the driving spring (73) is in a natural state, the driving rod (71) is separated from the clamping groove (22).

4. The chassis electrical box of claim 2, wherein: and a rubber pad (23) is fixedly connected to the groove wall of the positioning groove (21) which is not provided with the fixing groove (24).

5. The chassis electrical box of claim 1, wherein: offer on the lateral wall of locating piece (42) and supply the deformation of location shell fragment (43) to stretch into groove of stepping down (421), the stiff end of location shell fragment (43) and locating piece (42) is located groove of stepping down (421).

6. The chassis electrical box of claim 1, wherein: protection casing (41) are articulated through articulated elements (5) with upper cover (2), articulated elements (5) include pivot (51) of fixed connection on protection casing (41) and set up two articulated seat (52) at upper cover (2) lateral wall relatively, two articulated hole (521) have been seted up respectively to the terminal surface that articulated seat (52) are relative, pivot (51) rotate to wear to establish in articulated hole (521).

7. The chassis electrical box of claim 6, wherein: the both ends of pivot (51) are connected with locating part (6) that are used for blockking pivot (51) and articulated seat (52) separation respectively, locating part (6) are including spacing shell fragment (61) of fixed connection at pivot (51) circumference lateral wall, spacing groove (511) that supply spacing shell fragment (61) deformation to stretch into are seted up respectively to the both ends of pivot (51), the one end fixed connection of spacing shell fragment (61) is on the cell wall of spacing groove (511), the other end extends to the one side of keeping away from spacing groove (511).

8. The chassis electrical box of claim 6, wherein: the outside cover of pivot (51) is equipped with and is used for driving protection casing (41) to change torsional spring (53) to the open mode, the one end butt of torsional spring (53) on the lateral wall of upper cover (2), other end fixed connection on the circumference lateral wall of pivot (51).

9. The chassis electrical box of claim 1, wherein: the protective cover (41) is rotatably connected with a movable plate (8) which is obliquely arranged, and a plurality of air holes (83) are formed in the movable plate (8); the inner wall of the protection cover (41) is connected with an elastic barrier strip (9), and the elastic barrier strip (9) abuts against one side, close to the opening of the protection cover (41), of the movable plate (8).

10. The chassis electrical box of claim 9, wherein: a separation net (81) is integrally formed on one side, away from the opening of the protective cover (41), of the movable plate (8), a plurality of separation grooves (82) are formed between the separation net (81) and the movable plate (8), and the air holes (83) are formed in the wall of each separation groove (82).