Distribution box shell and distribution box

Abstract

A distribution box housing and a distribution box, the distribution box housing comprises a protective cover and a housing main body used for accommodating electrical elements, and the outer surface of the housing main body is provided with a protective groove used for accommodating an exposed conductor; the shell main body is provided with a rotary supporting part, the protective cover is provided with a rotary part which is rotatably connected to the rotary supporting part, the protective cover can rotate around the rotary supporting part through the rotary part in the covering direction and the opening direction so as to cover or expose the exposed conductor, the protective cover is further provided with a first connecting part, and the shell main body is provided with a second connecting part. The first connecting part can be connected with the second connecting part, and when the protective cover rotates towards the covering direction, the first connecting part is connected with the second connecting part, so that the protective cover is fixed with the shell main body; when the exposed conductor is exposed, the connection between the first connection part and the second connection part is released, so that the protective cover can rotate in the opening direction. According to the utility model, the problem that the protection structure on the distribution box housing in the prior art is complex to install and operate and is not easy to disassemble is solved.

Description

Technical Field

[0001] This utility model belongs to the field of power distribution boxes, specifically relating to a power distribution box shell and a power distribution box. Background Technology

[0002] High-voltage power distribution units, battery pack circuit breaker units, and other power distribution boxes within new energy vehicles are key components of the vehicle's power management system. They are responsible for power distribution and the charging and discharging control and protection of the battery pack, respectively. They generally consist of a casing and internal electrical components, with the components extending electrically out of the casing via copper busbars or wires. The exposed portions of the copper busbars or wires (referred to as exposed conductors) need to interface with other equipment, making the protection of these exposed conductors crucial to prevent damage from external factors such as dust and moisture.

[0003] In existing technologies, exposed conductors are typically protected by installing plastic protective covers on the distribution box. Conventional plastic protective covers are usually fixed to the distribution box using clips or screws, which is complicated to install, difficult to disassemble, and costly, making maintenance and repair of the exposed conductors of the distribution box difficult. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a distribution box shell and a distribution box, thereby solving the problem that the installation and operation of the protective mechanism on the distribution box shell in the prior art is complicated and not easy to disassemble, which makes it difficult to maintain and repair the exposed conductors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A distribution box housing, comprising:

[0007] A housing body for accommodating electrical components, wherein the outer surface of the housing body has a protective groove for accommodating exposed conductors, the exposed conductors being used to electrically extend the electrical components out of the housing body; and

[0008] The protective cover has a rotating support portion on its main body and a rotating portion rotatably connected to the rotating support portion. The protective cover can rotate around the rotating support portion via the rotating portion in two directions: covering the protective groove and opening the protective groove, to cover or expose the exposed conductor.

[0009] The protective cover is further provided with a first connecting part, and the outer shell body is provided with a second connecting part, wherein the first connecting part can be connected to the second connecting part.

[0010] When the protective cover rotates in the direction of covering the protective groove, the first connecting part connects to the second connecting part, thereby fixing the protective cover to the outer shell body; when the exposed conductor is exposed, the connection between the first connecting part and the second connecting part is released, thereby allowing the protective cover to rotate in the direction of opening the protective groove.

[0011] In one embodiment of this utility model, the rotating support part is a support shaft provided on the outer shell body, and the rotating part is a rotating column provided on the protective cover and having a rotating hole. The rotating column is rotatably nested on the support shaft through the rotating hole.

[0012] In one embodiment of this utility model, the rotating column is provided with a notch extending axially, and the support shaft is inserted into the rotating hole through the notch.

[0013] In one embodiment of this utility model, the width of the notch is smaller than the diameter of the support shaft. By applying a pressing force greater than the interference force between the notch and the support shaft to the rotating column, the support shaft can be inserted into the rotating hole.

[0014] In one embodiment of this utility model, the protective groove is formed on the side of the outer shell body, so that the protective groove forms a top opening and a side opening that are perpendicular to each other on the outer shell body. The protective cover includes a top cover and an outer cover. The outer cover is fixed to the outer side of the top cover. When the protective cover covers the protective groove, the top cover and the outer cover cover the top opening and the side opening, respectively.

[0015] In one embodiment of this utility model, the protective cover further includes an inner cover, which is fixed to the inner side of the top cover. The second connecting part includes an inner snap-fit ​​part, which includes an inner inclined groove that is opened at the top of the side wall of the protective groove and extends obliquely downward, and an inner snap-fit ​​groove located below the inner inclined groove. The inner cover is provided with an inner groove opening corresponding to the position of the inner inclined groove and the inner snap-fit ​​groove. The first connecting part includes an inner snap-fit ​​plate fixed to the inner groove opening. The tip of the inner snap-fit ​​plate is provided with an inner protrusion. When the protective cover rotates in the direction of covering the protective groove, the inner snap-fit ​​plate folds obliquely inward along the inner inclined groove through the inner protrusion and moves downward to the inner snap-fit ​​groove, and then springs back outward to the inner groove opening, so that the inner protrusion is snapped into the inner snap-fit ​​groove.

[0016] In one embodiment of this utility model, the second connecting part includes an outer snap-fit ​​part, which is disposed on the bottom wall of the protective groove and located at the side opening. The outer snap-fit ​​part has an outer oblique groove extending downward from the top and an outer snap-fit ​​groove below the outer oblique groove. The outer cover has an outer slot corresponding to the position of the outer oblique groove and the outer snap-fit ​​groove. The first connecting part includes an outer snap-fit ​​plate fixed to the outer slot. The tip of the outer snap-fit ​​plate has an outer protrusion. When the protective cover rotates in the direction of covering the protective groove, the outer snap-fit ​​plate folds inward from the outer oblique groove through the outer protrusion and moves downward to the outer snap-fit ​​groove, and then springs back outward to the outer slot, so that the outer protrusion is snapped into the outer snap-fit ​​groove.

[0017] In one embodiment of this utility model, the end of the protective cover away from the rotating part is provided with a lifting part for manually rotating the protective cover.

[0018] As one embodiment of this utility model, the protective cover and / or the protective groove are further provided with a conductor port for connecting the exposed conductor to an external device.

[0019] To achieve the above objectives, the present invention also adopts the following technical solution:

[0020] A distribution box includes the aforementioned distribution box housing; electrical components housed within the distribution box housing; and an exposed conductor extending the electrical components electrically out of the distribution box housing.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. The distribution box shell of this utility model protects exposed conductors through a flip-top protective structure (protective cover and protective groove), eliminating the need for conventional screw fixing and simplifying the installation process of the protective structure on the distribution box shell;

[0023] 2. Since the protective cover can be rotated, there is no need for a cumbersome protective cover procedure. Simply rotate and open the protective cover to directly operate the connection or maintenance of the exposed conductor to the external equipment, which improves the convenience of the connection and maintenance procedures.

[0024] 3. This utility model protects exposed conductors by setting protective grooves on the main body of the outer shell. Compared with setting a protective cover directly on the distribution box, this ensures that the external size of the distribution box will not be too large. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the distribution box structure when the protective cover is open;

[0027] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0028] Figure 3 This is a structural diagram of the distribution box when the protective cover is on.

[0029] Figure 4 yes Figure 3 A magnified view of a portion of the image;

[0030] Figure 5 This is a schematic diagram of the upper outer shell after the protective cover has been removed;

[0031] Figure 6 This is a schematic diagram of the protective cover from one perspective;

[0032] Figure 7 This is a schematic diagram of the protective cover from another perspective;

[0033] Figure 8 This is an enlarged view of the outer snap-fit ​​part on the protective groove.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Distribution box; 10. Main body of the outer casing; 11. Upper outer casing; 111. Conductor guide groove; 12. Lower outer casing; 13. Buckle;

[0036] 20. Protective structure; 21. Protective groove; 211. Bottom wall; 212. First side wall; 213. Second side wall; 22. Protective cover; 221. Top cover; 222. Outer cover; 2221. Outer snap-fit ​​plate; 2222. Outer protrusion; 223. Inner cover; 2231. Inner snap-fit ​​plate; 2232. Inner protrusion; 224. Conductor opening; 23. Outer snap-fit ​​part; 231. Outer snap groove; 232. Outer inclined groove; 24. Inner snap-fit ​​part; 241. Inner snap groove; 242. Inner inclined groove; 25. Support shaft (rotating support part); 26. Rotating column (rotating part); 261. Rotating hole; 262. Notch; 27. Lifting part;

[0037] 30. Exposed conductor. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model.

[0039] In this utility model, unless otherwise stated, directional terms such as "up", "down", "left", "right", "front", and "back" generally refer to the up, down, left, and right directions in the actual use or working state of the device, specifically the directions shown in the accompanying drawings.

[0040] It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment in the following embodiments have their own emphasis; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0041] like Figures 1 to 8 The diagram illustrates a power distribution box 1 according to a specific embodiment of the present invention. It includes a power distribution box housing, electrical components (not shown) disposed within the housing, and at least one exposed conductor 30 electrically connected to and extending from the housing. Specifically, a portion of the exposed conductor 30 is disposed within the housing and electrically connected to the electrical components; another portion extends from the housing for electrically connecting the electrical components to other external devices.

[0042] In one specific embodiment, the distribution box housing includes a housing body 10 and a protective cover 22. The housing body 10 includes an upper housing 11 and a lower housing 12, which are fastened together by a snap-fit ​​13. The distribution box 1 can be assembled using the following steps: first, the electrical components are installed inside the lower housing 12; then, one end of the exposed conductor 30 is electrically connected to the electrical components, and the other end passes through a pre-drilled hole in the upper housing 11, extending out of the housing body 10; finally, the upper housing 11 and the lower housing 12 are fastened together. Alternatively, the electrical components can be installed inside the upper housing 11, and then the other end of the exposed conductor 30 passes through a pre-drilled hole in the lower housing 12. This invention does not limit the installation position of the electrical components inside the housing body 10, nor the position of the exposed conductor 30 on the housing body 10. Furthermore, the housing body 10 can also be a one-piece housing, replacing a separate housing such as the upper housing 11 and the lower housing 12.

[0043] Furthermore, a protective structure 20 is provided on the outer shell 10 (specifically, the upper shell 11) to prevent external factors such as dust and moisture from affecting the exposed conductor 30 and the connection structure between the exposed conductor 30 and external equipment. The protective structure 20 includes a protective groove 21 formed on the outer surface of the outer shell 11, and the exposed conductor 30 is located in the protective groove 21. The protective groove 21 can be, for example, a groove of various shapes such as cylindrical, hemispherical, or cuboid. Taking a cuboid groove as an example, the protective groove 21 is formed on the side of the upper shell 11, and includes two perpendicular bottom walls 211, a first side wall 212 and a second side wall 213, as well as a top opening opposite the bottom wall 211 and a side opening opposite the first side wall 212. The exposed conductor 30 can be located on the bottom wall 211, that is, the bottom wall 211 has a through hole reserved on the upper shell 11, and the other end of the exposed conductor 30 passes through the through hole and is exposed on the bottom wall 211. The exposed conductor 30 can also be disposed on other wall surfaces such as the first sidewall 212 or the second sidewall 213. The protective groove 21 can be formed by recessing the outer surface of the upper housing 11 inward. Alternatively, the protective groove 21 can be directly formed on the upper housing 11 during manufacturing by injection molding or stamping. Furthermore, the protective groove 21 can also be disposed on a corner of the upper housing, in which case it has one bottom wall 211, one first sidewall 212, and one second sidewall 213. The protective groove 21 can also be disposed on the surface of the upper housing, in which case it has one bottom wall 211, two first sidewalls 212, and two second sidewalls 213. This invention does not limit the placement of the protective groove, but placing it on the edge or corner can reduce the number of sidewalls of the groove and increase the number of openings, thereby increasing the operable space for maintaining the exposed conductor and further improving the convenience of maintenance.

[0044] In addition, the protective structure 20 also includes a protective cover 22, which is formed into a cuboid shape corresponding to the protective groove 21, and is composed of a top cover 221 and an outer cover 222 and an inner cover 223 fixed to both sides of the top cover 221. The upper outer shell 11 is provided with a rotating support part 25, and the protective cover 22 is provided with a rotating part 26 rotatably connected to the rotating support part 25. The protective cover 22 can rotate around the rotating support part 25 via the rotating part 26 in the direction of covering the protective groove 21 and the direction of opening the protective groove 21, respectively, so as to cover or expose the exposed conductor 30 in the protective groove 21. Specifically, the rotating support part 25 may be a support shaft 25 provided on the top of the second side wall 213, and the rotating part may be a rotating column 26 connected between the outer cover 222 and the inner cover 223 and located at one end of the protective cover 22. The rotating column 26 may be connected between the outer cover 222 and the inner cover 223 via a base plate, or it may be directly connected between the outer cover 222 and the inner cover 223. Furthermore, the rotating column 26 has an axially extending rotating hole 261, through which it is rotatably nested on the support shaft 25. Thus, the protective cover 22 can be rotated around the support shaft 25 via the rotating column 26, thereby covering and opening the protective groove 21. Specifically, the top cover 221 covers the top opening of the protective groove 21, and the outer cover 222 covers the side opening of the protective groove 21. Therefore, this flip-top type distribution box housing with a protective cover and protective groove allows for convenient opening and closing of the protective cover when needed, improving operational efficiency and making maintenance and repair of exposed conductors within the protective groove more convenient.

[0045] In addition, the protective cover 22 is provided with a first connecting part, and the upper outer shell 11 is provided with a second connecting part. The first connecting part can be connected to the second connecting part. When the protective cover 22 rotates in the direction of covering the protective groove 21, the first connecting part connects to the second connecting part, thereby fixing the protective cover 22 to the outer shell body 10. When it is necessary to expose the exposed conductor 30, the connection between the first connecting part and the second connecting part is released, so that the protective cover 22 can rotate in the direction of opening the protective groove 21. Thus, by fixing the protective cover to the outer shell body through the first connecting part and the second connecting part, it can be ensured that the protective cover will not shake after being covered, thereby improving the protective effect.

[0046] In one specific embodiment, since the protective groove 2 only has two openings—a top opening and a side opening—it can be covered by only the top cover 221 and the outer cover 222. Therefore, the protective cover 22 may not have an inner cover 223. The purpose of providing an inner cover is to provide a first connecting part, which will be described in detail later, on both the outer cover and the inner cover. By connecting the two first connecting parts with the two second connecting parts respectively, the stability of the connection between the protective cover and the outer shell body can be improved. In addition, the applicability of the protective cover can also be improved. That is, no matter where the protective groove is located on the outer shell body, since the outer cover and the inner cover are provided with first connecting parts, they can be connected to the corresponding second connecting parts on the outer shell body.

[0047] In one specific embodiment, the rotating column 26 has an axially extending notch 262, through which the support shaft 25 is engaged in the rotating hole 261. Preferably, the width of the notch 262 is smaller than the diameter of the support shaft 25, and the support shaft 25 can be engaged in the rotating hole 261 by applying a pressing force greater than the interference force between the notch 262 and the support shaft 25 to the rotating column 266. When the protective cover 22 opens the protective groove 21, the protective cover 22 can also be removed from the housing body 10 through the notch 262. Thus, through the above-described detachable rotating and fixing structure of the rotating column with the notch and the support shaft, the protective cover can be removed from the distribution box, leaving the exposed conductor 30 completely unobstructed on the housing body 10, increasing the operating space, and making it easier to connect the exposed conductor to external equipment and to maintain and repair the connection between the exposed conductor and external equipment. For example, the notch can be formed by cutting 1 / 4 to 1 / 2 of the rotating column axially. Alternatively, it can be directly formed into the rotating column during the manufacturing of the protective cover by injection molding or other methods.

[0048] In one specific embodiment, the second connecting part includes an inner locking part 24, which includes an inner inclined groove 242 that is formed on the top of the first side wall 212 of the protective groove 21 and extends obliquely downward, and an inner locking groove 241 located below the inner inclined groove 242. The inner cover 223 is provided with an inner groove corresponding to the position of the inner inclined groove 242 and the inner locking groove 241. The first connecting part includes an inner locking plate 2231 fixed to the inner groove. The tip of the inner locking plate 2231 is provided with an inner protrusion 2232. When the protective cover 22 rotates in the direction of covering the protective groove 21, the inner locking plate 2231 folds obliquely inward along the inner inclined groove 242 through the inner protrusion 2232 and moves downward to the inner locking groove 241, and then springs outward to the inner groove, so that the inner protrusion 2232 is locked into the inner locking groove 241. When it is necessary to disconnect the first connecting part from the second connecting part, the inner snap plate 2231 is pressed inward, so that the inner protrusion 2232 is snapped out of the inner snap groove 241, and the protective cover 22 can rotate in the direction of opening the protective groove 21.

[0049] In one specific embodiment, the second connecting part includes an outer snap-fit ​​part 23, which is disposed on the bottom wall 211 of the protective groove 21 and located at the side opening. The outer snap-fit ​​part 23 has an outer oblique groove 232 extending obliquely downward at the top and an outer snap groove 231 located below the outer oblique groove 232. The outer cover 222 has an outer groove corresponding to the position of the outer oblique groove 232 and the outer snap groove 231. The first connecting part includes an outer snap-fit ​​plate 2221 fixed to the outer groove. The tip of the outer snap-fit ​​plate 2221 has an outer protrusion 2222. When the protective cover 22 rotates in the direction of covering the protective groove 21, the outer snap-fit ​​plate 2221 folds obliquely inward along the outer oblique groove 232 through the outer protrusion 2222 and moves downward to the outer snap groove 231, and then springs outward to the outer groove, so that the outer protrusion 2222 is snapped into the outer snap groove 231. When it is necessary to disconnect the first connecting part from the second connecting part, the outer snap plate 2221 is pressed inward, so that the outer protrusion 2222 is snapped out of the outer snap groove 231, and the protective cover 22 can rotate in the direction of opening the protective groove 21.

[0050] Alternatively, the first connecting part and the second connecting part may not have the structure described above. They could also be two magnetic components connected magnetically to achieve a detachable connection. This invention does not limit its specific structure, as long as it allows for a detachable connection.

[0051] In one specific embodiment, the end of the protective cover 22 away from the rotating part is provided with a lifting part 27 for manually rotating the protective cover 22. The lifting part 27 may be a lifting flange extending from the outer edge of the protective cover 22, or it may be a handle or other structure. By providing the lifting part 27, it is convenient for the operator to open and close the protective cover 22.

[0052] In one specific embodiment, the protective cover 22 is further provided with a conductor opening 224 for connecting the exposed conductor 30 to external equipment. The upper housing 11 is provided with multiple conductor guide grooves 111 for wiring, and the conductor guide grooves 111 are connected to the conductor opening 224. External equipment can be connected to the exposed conductor 30 via conductors such as wires or copper busbars. That is, the wires or copper busbars are arranged in the conductor guide grooves 111, with one end passing through the conductor opening 224 and connecting to the exposed conductor, and the other end connecting to the external equipment. Alternatively, a conductor opening can be provided on the protective recess 21. Thus, by providing the conductor opening 224, it is convenient to connect the exposed conductor to external equipment. By providing conductor guide grooves for wiring, the neatness of the distribution box can be improved. Furthermore, as shown in the figure, each distribution box housing 20 can be provided with a separate conductor guide groove 111, or two or more adjacent distribution box housings 20 can share a single conductor guide groove 111.

[0053] Furthermore, the figure shows that the distribution box housing 10 has three exposed conductors 30, and correspondingly, the distribution box outer shell 20 also has three. However, this is not a limitation, and the number of distribution box outer shells 20 can be adaptively changed according to factors such as the number or location of the exposed conductors 30.

[0054] The solution of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0055] Throughout this specification, the terms "an embodiment," "embodiment," or "specific embodiment" refer to a particular feature, structure, or characteristic described in connection with an embodiment that is included in at least one embodiment of this application, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of this application may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of this application.

[0056] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0057] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

Claims

1. A distribution box housing, characterized in that, include: A housing body for accommodating electrical components, wherein the outer surface of the housing body has a protective groove for accommodating exposed conductors, the exposed conductors being used to electrically extend the electrical components out of the housing body; and The protective cover has a rotating support portion on its main body and a rotating portion rotatably connected to the rotating support portion. The protective cover can rotate around the rotating support portion via the rotating portion in two directions: covering the protective groove and opening the protective groove, to cover or expose the exposed conductor. The protective cover is further provided with a first connecting part, and the outer shell body is provided with a second connecting part, wherein the first connecting part can be connected to the second connecting part. When the protective cover rotates in the direction of covering the protective groove, the first connecting part connects to the second connecting part, thereby fixing the protective cover to the outer shell body; when the exposed conductor is exposed, the connection between the first connecting part and the second connecting part is released, thereby allowing the protective cover to rotate in the direction of opening the protective groove.

2. The distribution box housing according to claim 1, characterized in that, The rotating support is a support shaft provided on the outer shell body, and the rotating part is a rotating column provided on the protective cover and having a rotating hole. The rotating column is rotatably nested on the support shaft through the rotating hole.

3. The distribution box housing according to claim 2, characterized in that, The rotating column has an axially extending notch, through which the support shaft is engaged in the rotating hole.

4. The distribution box housing according to claim 3, characterized in that, The width of the notch is smaller than the diameter of the support shaft. By applying a pressing force greater than the interference force between the notch and the support shaft to the rotating column, the support shaft can be engaged in the rotating hole.

5. The distribution box housing according to any one of claims 1 to 4, characterized in that, The protective groove is formed on the edge of the outer shell body, so that the protective groove forms a top surface opening and a side opening that are perpendicular to each other on the outer shell body. The protective cover includes a top cover and an outer cover, the outer cover being fixed to the outer side of the top cover. When the protective cover covers the protective groove, the top cover and the outer cover cover the top opening and the side opening, respectively.

6. The distribution box housing according to claim 5, characterized in that, The protective cover also includes an inner cover, which is fixed to the inner side of the top cover. The second connecting portion includes an inner locking portion, which includes an inner oblique groove extending downward from the top of the side wall of the protective groove and an inner locking groove located below the inner oblique groove. The inner cover has an inner groove corresponding to the positions of the inner inclined groove and the inner locking groove. The first connecting part includes an inner locking plate fixed to the inner groove, and the tip of the inner locking plate has an inner protrusion. When the protective cover rotates in the direction of covering the protective groove, the inner snap-fit ​​plate folds inward along the inner groove through the inner protrusion and moves downward to the inner snap-fit ​​groove, and then springs back outward to the inner groove opening, so that the inner protrusion snaps into the inner snap-fit ​​groove.

7. The distribution box housing according to claim 5, characterized in that, The second connecting part includes an outer snap-fit ​​part, which is disposed on the bottom wall of the protective groove and located at the side opening. The outer snap-fit ​​part has an outer oblique groove extending downward from the top and an outer snap-fit ​​groove located below the outer oblique groove. The outer cover has an outer groove corresponding to the position of the outer inclined groove and the outer locking groove. The first connecting part includes an outer locking plate fixed to the outer groove, and the tip of the outer locking plate has an outer protrusion. When the protective cover rotates in the direction of covering the protective groove, the outer snap-fit ​​plate folds inward along the outer groove through the outer protrusion and moves downward to the outer snap-fit ​​groove, and then springs back outward to the outer groove opening, so that the outer protrusion is snapped into the outer snap-fit ​​groove.

8. The distribution box housing according to any one of claims 1 to 4, characterized in that, The protective cover has a lifting part at the end away from the rotating part for manually rotating the protective cover.

9. The distribution box housing according to any one of claims 1 to 4, characterized in that, The protective cover and / or the protective groove are further provided with a conductor port for connecting the exposed conductor to an external device.

10. A power distribution box, characterized in that, include: The distribution box housing according to any one of claims 1 to 9; Electrical components housed within the casing of the distribution box; and The electrical components are electrically extended from the exposed conductors of the distribution box housing.

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