Automobile primary power supply distribution center with single-sided stepped lead inlet and outlet interfaces

Abstract

The invention discloses a single-sided stepped inlet and outlet wire interface automobile primary power supply distribution center, which comprises a main body assembly, an upper cover assembly is arranged on the main body assembly, the main body assembly comprises a main body, and a first inlet and outlet wire interface and a second inlet and outlet wire interface are arranged on the main body. The first in-out wire interface and the second in-out wire interface are located on the same side face of the main body and are arranged in a stepped mode. The first in-out wire interface, the second in-out wire interface, the upper-layer conductor and the lower-layer conductor which are arranged in a stepped manner realize current transmission, and meanwhile, the out-out wire interfaces are integrally arranged on one side surface of the main body in a stepped manner, so that the boundary dimension of the power supply distribution center is reduced, the upper-layer conductor and the lower-layer conductor are integrally connected, and the weight of the conductors is reduced; the weight of the power distribution center is reduced, and the problem that the requirements of light weight and miniaturization are not met due to the fact that wire outlet interfaces of the power distribution center are designed on a plurality of side faces of the main body and are of single-layer split wire inlet and outlet structures is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile circuit systems, in particular to an automobile primary power distribution center with a single-sided stepped in-and-out wire interface. Background Art

[0002] As the primary protection power distribution center of the vehicle circuit system, the primary power distribution center of the vehicle is mainly designed to centrally design the plate-type fuses of large current loads, such as EPS, ABS, UEC, IEC, fans, generators and other loads. The main function of the primary power distribution center of the vehicle is to protect the wires from overload and short circuit when the current in the circuit of the vehicle load increases rapidly, so as to avoid burning the wires and the vehicle.

[0003] The primary power distribution center of an automobile is generally installed on the battery, on the vehicle chassis or in the battery compartment. Depending on the usage scenario, the input and output wire interfaces of the automobile primary power distribution center are mostly designed on 2-3 sides of the main body, and are all single-layer split input and output wire structures. The single layer on the single-layer split input and output wire structure means that the conductors in the main body are arranged on a height plane, and the split type means that the conductors inside the automobile primary power distribution center are split conductors, that is, several separate individuals, one conductor corresponds to one wire, and the input and output wire interfaces are arranged on multiple sides of the main body and the single-layer arrangement makes the product size larger. The interior of the automobile primary power distribution center is a split conductor, and the weight of several conductors is heavy, resulting in a heavy total weight of the automobile primary power distribution center, which does not meet the requirements of automobile manufacturers for lightweight and miniaturized parts. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a single-sided stepped input and output wire interface for a primary power distribution center of an automobile, which solves the technical problem that the output wire interfaces of the existing power distribution center are designed on multiple sides of the main body and are all single-layer input and output wire structures, resulting in the power distribution center being large in size and heavy in weight, which does not meet the requirements of lightweight and miniaturization of automobile parts.

[0005] The technical solution of the present invention is implemented as follows: a single-sided stepped input and output wire interface automobile primary power distribution center, including a main body assembly, a top cover assembly is provided on the main body assembly, the main body assembly includes a main body, a first input and output wire interface and a second input and output wire interface are provided on the main body, the first input and output wire interface and the second input and output wire interface are located on the same side of the main body, the first input and output wire interface and the second input and output wire interface are arranged in a stepped manner, a transmission structure is provided in the main body, the transmission structure includes an upper conductor for connecting the first input and output wire interface to insert the wire, the upper conductor is integrally connected with a lower conductor for connecting the second input and output wire interface to insert the wire, and the upper conductor and the lower conductor are arranged in a stepped manner.

[0006] Preferably, a conducting structure is provided on the main body, one end of the conducting structure is located in the first inlet and outlet wire interface, and the other end is connected to an upper-layer fuse, and the upper-layer fuse is connected to an upper-layer conductor.

[0007] Preferably, the conductive structure includes a conductive sheet, and the two ends of the conductive sheet are respectively connected to a first bolt and a second bolt, the first bolt is located in the first input and output wire interface, the second bolt is connected to the upper fuse, and a partition is provided between the first bolt and the second bolt, and the partition is integrally connected to the main body.

[0008] Preferably, a lower fuse is connected to the lower conductor, and a connecting bolt for fixing the wire is integrally connected to the lower conductor.

[0009] Preferably, the first inlet and outlet wire interface protrudes toward the outside of the main body relative to the second inlet and outlet wire interface.

[0010] Preferably, the main body and the outside of the upper cover assembly are clamped together by a connecting structure; the connecting structure includes a clip body, the clip body is located outside the main body and the upper cover assembly, the clip body includes a deformation portion, both ends of the deformation portion are respectively provided with a rotating portion and a clamping portion, the top surface of the upper cover assembly is provided with a limit platform, and a cylindrical pin is provided on the outside of the main body, when the main body and the upper cover assembly need to be locked, the rotating portion is sleeved on the cylindrical pin, and the clamping portion cooperates with the limit platform for blocking.

[0011] Preferably, the longitudinal section of the clamping portion is V-shaped, the longitudinal section of the limit platform is triangular, the surface where the limit platform and the clamping portion stop is a stop surface, and the angle between the stop surface and the top surface of the upper cover assembly is greater than 45°.

[0012] Preferably, the upper cover assembly includes a cover body, which is provided with an annular groove, in which a two-component foamed elastomer is provided to cooperate with the annular side wall of the main body; the cover body includes a horizontal area and an inclined area, the horizontal area and the inclined area are integrally connected, and the limit platform is located on the horizontal area; the horizontal area is provided with a protective wall, and the protective wall is located on the side of the limit platform.

[0013] Preferably, the horizontal area is provided with an arc-shaped hole that cooperates with the first inlet and outlet wire interface to limit the wire, and a plurality of the arc-shaped holes are arranged at intervals on the horizontal area, and a protruding structure is provided between two adjacent arc-shaped holes; the inclined area is provided with a first hanging structure, and the main body is provided with a first boss, and the first hanging structure is hung and cooperated with the first boss.

[0014] Preferably, a sealing plug clamp for limiting the sealing plug at the second inlet and outlet wire interface is provided on the main body, and the sealing plug clamp is clamped with the main body.

[0015] The present invention respectively arranges a first inlet and outlet wire interface and a second inlet and outlet wire interface on the same side of the exterior of the main body, and arranges the first inlet and outlet wire interface and the second inlet and outlet wire interface in a stepped manner, and arranges an upper conductor and a lower conductor in a stepped manner inside the main body, and the upper conductor and the lower conductor correspond to the first inlet and outlet wire interface and the second inlet and outlet wire interface, respectively, so as to facilitate the insertion and conduction of the wires, thereby realizing the transmission of the current. The first inlet and outlet wire interface, the second inlet and outlet wire interface, the upper conductor and the lower conductor arranged in a stepped manner realize the transmission of the current and at the same time, the outlet wire interface is arranged in a stepped manner. The arrangement on one side of the main body is conducive to reducing the external dimensions of the power distribution center, and because the upper conductor and the lower conductor are integrally connected, they are an integrated conductor. Compared with several conductors on a split conductor, the total weight of the conductors is reduced, and the weight of the power distribution center is reduced, which is conducive to achieving the requirements of lightweight and miniaturization of automobile parts. It solves the technical problem that the output wire interface of the existing power distribution center is designed on multiple sides of the main body and is a single-layer input and output wire structure, resulting in a large external dimension and heavy weight of the power distribution center, which does not meet the requirements of lightweight and miniaturization of automobile parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0017] Figure 1 It is an exploded view of the present invention.

[0018] Figure 2 It is an overall three-dimensional diagram of the upper cover of the present invention.

[0019] Figure 3 It is an exploded view of the upper cover assembly of the present invention.

[0020] Figure 4 The main body of the present invention is integrated Figure 1 .

[0021] Figure 5 The main body of the present invention is integrated Figure 2 .

[0022] Figure 6 It is a schematic diagram of the conduction structure of the present invention.

[0023] Figure 7 It is a schematic diagram of the sealing plug clip of the present invention.

[0024] Figure 8 It is a schematic diagram of the connection between the main body and the upper cover assembly of the present invention.

[0025] Fig. 9 It is a three-dimensional diagram of the connection structure of the present invention.

[0026] Fig.10 It is a schematic diagram of the limiting platform of the present invention.

[0027] Fig.11 It is a schematic diagram of the connection between the main body and the cylindrical pin of the present invention.

[0028] In the figure: 1 upper cover assembly, 2 main body assembly, 3 sealing plug clip, 4 cover body, 5 two-component foamed elastomer, 6 annular groove, 7 limit platform, 8 protective fence, 9 arc hole, 10 protruding structure, 11 first hanging structure, 12 main body, 13 transmission structure, 14 connecting bolt, 15 upper insurance, 16 connecting structure, 17 partition, 18 first inlet and outlet wire interface, 19 second inlet and outlet wire interface, 20 conducting structure, 21 annular side wall, 22 second boss, 23 conductive sheet, 24 first bolt, 25 second bolt, 26 second hanging structure, 27 stopping structure, 28 cylindrical pin, 29 fastening bolt, 30 first boss, 31 upper conductor, 32 lower conductor, 33 lower insurance, 34 clip body, 35 deformation part, 36 rotating part, 37 clamping part. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1, a single-sided stepped in-out wire interface automobile primary power distribution center, such as Figure 1 , Figure 4 and Figure 5As shown, it includes a main body assembly 2, on which an upper cover assembly 1 is provided, and the main body assembly 2 includes a main body 12, on which a first inlet and outlet wire interface 18 and a second inlet and outlet wire interface 19 are provided, the first inlet and outlet wire interface 18 and the second inlet and outlet wire interface 19 are located on the same side of the main body 12, and the first inlet and outlet wire interface 18 and the second inlet and outlet wire interface 19 are arranged in a stepped manner, and a transmission structure 13 is provided in the main body 12, and the transmission structure 13 includes an upper conductor 31 for connecting the first inlet and outlet wire interface 18 to insert the wire, and the upper conductor 31 is integrally connected with a lower conductor 32 for connecting the second inlet and outlet wire interface 19 to insert the wire, and the upper conductor 31 and the lower conductor 32 are arranged in a stepped manner. The first inlet and outlet wire interface and the second inlet and outlet wire interface are respectively arranged on the same side of the outside of the main body, and the first inlet and outlet wire interface and the second inlet and outlet wire interface are arranged in a stepped manner. The upper conductor and the lower conductor arranged in a stepped manner are arranged inside the main body, and the upper conductor and the lower conductor correspond to the first inlet and outlet wire interface and the second inlet and outlet wire interface, respectively, so as to facilitate the insertion and conduction of the wires, thereby realizing the transmission of the current. The first inlet and outlet wire interface, the second inlet and outlet wire interface, the upper conductor and the lower conductor arranged in a stepped manner realize the transmission of the current and at the same time, the outlet wire interface is arranged in a stepped manner. Being placed on one side of the main body is conducive to reducing the overall dimensions of the power distribution center, and because the upper conductor and the lower conductor are integrally connected, they are an integrated conductor. Compared with several conductors on a split conductor, the total weight of the conductors is reduced, and the weight of the power distribution center is reduced, which is conducive to achieving the requirements of lightweight and miniaturized parts in automobile factories, and solves the technical problem that the output wire interface of the existing power distribution center is designed on multiple sides of the main body and is a single-layer input and output wire structure, resulting in a large overall dimension and heavy weight of the power distribution center, which does not meet the requirements of lightweight and miniaturized parts in automobile factories.

[0031] Embodiment 2, based on embodiment 1, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 4 and Figure 5 As shown, the main body 12 is provided with a conducting structure 20, one end of the conducting structure 20 is located in the first inlet and outlet wire interface 18, and the other end is connected to the upper fuse 15, and the upper fuse 15 is connected to the upper conductor 31. The setting of the upper fuse 15 greatly improves the safety of current transmission of the upper conductor 31. The setting of the conducting structure 20 is to connect the wire to the upper conductor 31 for conduction.

[0032] Embodiment 3, based on embodiment 2, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 4 , Figure 5 and Figure 6As shown, the conductive structure 20 includes a conductive sheet 23, and the two ends of the conductive sheet 23 are respectively connected with a first bolt 24 and a second bolt 25, the first bolt 24 is located in the first inlet and outlet wire interface 18, the second bolt 25 is connected to the upper fuse 15, and a partition 17 is provided between the first bolt 24 and the second bolt 25, and the partition 17 is integrally connected to the main body 12. The first bolt 24 and the second bolt 25 are both riveted to the conductive sheet 23, and the first bolt 24 and the second bolt 25 can be bolts of different specifications. The first bolt 24 on one side of the conductive structure 20 is integrally injection molded on the outside of the partition 17 of the main body 12, and the second bolt 25 on the other side is integrally injection molded on the inside of the partition 17 of the main body 12, eliminating the risk of external moisture entering the interior of the main body 12, and meeting the high protection level requirements of the first inlet and outlet wire interface 18. The second bolt 25 is provided to connect with the upper fuse 15, and the first bolt 24 is provided to fix the wire inserted into the first inlet and outlet wire interface 18.

[0033] Embodiment 4, based on embodiment 3, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 4 As shown, the lower conductor 32 is connected with a lower fuse 33, and the lower conductor 32 is integrally connected with a connecting bolt 14 for fixing the wire. The connecting bolt 14 is provided to fix the wire inserted into the second inlet and outlet wire interface 19. The provision of the lower fuse 33 improves the safety of current transmission of the lower conductor 32.

[0034] Embodiment 5, based on embodiment 4, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 1 , Figure 4 and Figure 5 As shown, the first inlet and outlet wire interface 18 protrudes toward the outside of the main body 12 relative to the second inlet and outlet wire interface 19. The first inlet and outlet wire interface 18 protrudes toward the outside of the main body 12 by a certain size relative to the second inlet and outlet wire interface 19, forming a stepped distribution, and the specific size of the first inlet and outlet wire interface 18 protruding toward the outside of the main body 12 relative to the second inlet and outlet wire interface 19 can be selected according to actual needs.

[0035] Embodiment 6, based on any one of embodiments 1 to 5, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, the main body 12 is clamped with the outside of the upper cover assembly 1 through a connecting structure 16; the connecting structure 16 includes a clip body 34, and the clip body 34 is located outside the main body 12 and the upper cover assembly 1. The clip body 34 includes a deformation portion 35, and the two ends of the deformation portion 35 are respectively provided with a rotating portion 36 and a clamping portion 37. The top surface of the upper cover assembly 1 is provided with a limit platform 7, and the outside of the main body 12 is provided with a cylindrical pin 28. When the main body 12 and the upper cover assembly 1 need to be locked, the rotating portion 36 is sleeved on the cylindrical pin 28, and the clamping portion 37 is matched with the limit platform 7 for blocking. The main body 12 and the upper cover assembly 1 are pre-installed correspondingly, and then the rotating part 36 on the connecting structure 16 is directly put on the cylindrical pin 28, and the clamping part 37 on the clamp body 34 is stopped and clamped with the limit platform 7, so the main body 12 and the upper cover assembly 1 can be snapped together and clamped. There is no need to perform multiple steps of installation before the main body 12 and the upper cover assembly 1 are clamped, which saves assembly steps. In addition, the present application does not require two rotations in succession. It only needs to directly press the clamping part 37 on the clamp body 34 and the limit platform 7 to stop and clamp them. The upper cover assembly 1 can be quickly opened or installed by hand, meeting the purpose of quick maintenance required by customers.

[0036] Embodiment 7, based on embodiment 6, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the longitudinal section of the clamping portion 37 is V-shaped, the longitudinal section of the stop platform 7 is triangular, the surface where the stop platform 7 and the clamping portion 37 stop is a stop surface, and the angle between the stop surface and the top surface of the upper cover assembly 1 is greater than 45°. When the angle between the stop surface and the top surface of the upper cover assembly 1 is greater than 45°, the clamping portion 37 and the stop platform 7 can be in a clamped state, but when the angle between the stop surface and the top surface of the upper cover assembly 1 is not greater than 45°, the clamping portion 37 and the stop platform 7 will be separated. The angle between the stop surface and the top surface of the upper cover assembly 1 is greater than 45°, which is conducive to ensuring that the connection structure 16 clamps the upper cover assembly 1 and the main body 12.

[0037] Embodiment 8, based on embodiment 7, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 1 , Figure 2 and Figure 3As shown, the upper cover assembly 1 includes a cover body 4, on which an annular groove 6 is provided, in which a two-component foamed elastic body 5 is provided to cooperate with the annular side wall 21 of the main body 12; the cover body 4 includes a horizontal area and an inclined area, which are integrally connected, and the limit platform 7 is located on the horizontal area; the horizontal area is provided with a protective wall 8, which is located on the side of the limit platform 7. The cooperation between the two-component foamed elastic body 5 and the main body 12 achieves the requirement of a high protection level between the cover body 4 and the main body 12, that is, the waterproof and dustproof effect between the cover body 4 and the main body 12 is improved. The two-component foamed elastic body 5 specifically refers to two different polyurethane liquid substances A and polyurethane liquid substances B, which undergo chemical reactions such as foaming and expansion after mixing, and have a relatively smooth outer surface, a relatively large number of dense pores inside, etc., and have certain compression and rebound characteristics.

[0038] The protection wall 8 is provided to protect the limit platform 7. The cover body 4 of the present application includes a horizontal area and an inclined area, that is, the front half is a horizontal area, and the rear half is an inclined area. The setting of the inclined area avoids the formation of water accumulation on the upper surface of the cover body 4, eliminating the risk of functional failure caused by water accumulation entering the interior of the product.

[0039] Embodiment 9, based on embodiment 8, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the horizontal area is provided with an arc hole 9 that cooperates with the first inlet and outlet wire interface 18 to limit the wire, and several of the arc holes 9 are arranged at intervals in the horizontal area, and a protruding structure 10 is arranged between two adjacent arc holes 9; the inclined area is provided with a first hanging structure 11, and the main body 12 is provided with a first boss 30, and the first hanging structure 11 is hung and matched with the first boss 30. The arc hole 9 is arranged to cooperate with the first inlet and outlet wire interface 18 to form a cavity for the wire to be inserted, wherein the size of the arc hole 9 among the several arc holes 9 arranged in the horizontal area can be adjusted as needed, and arc holes 9 of different sizes can be arranged, so that the arc hole 9 and the first inlet and outlet wire interface 18 can be combined to accommodate wires of different wire diameters. The hanging and matching of the first hanging structure 11 and the first boss 30 further promotes the firmness of the connection between the main body 12 and the cover body 4.

[0040] Embodiment 10, based on embodiment 9, a single-sided stepped in / out wire interface automobile primary power distribution center, such as Figure 1 , Figure 5 and Figure 7As shown, a sealing plug clamp 3 for limiting the sealing plug at the second inlet and outlet wire interface 19 is provided on the main body 12 , and the sealing plug clamp 3 is clamped with the main body 12 . When the second inlet and outlet wire interface 19 accommodates the wire, in order to improve the waterproof and dustproof level of the second inlet and outlet wire interface 19, a sealing bolt is used for sealing to prevent moisture from entering the inside of the main body 12 along the second inlet and outlet wire interface 19. After the sealing bolt seals the second inlet and outlet wire interface 19, in order to prevent the sealing bolt from falling off or shifting, a sealing bolt clip 3 is arranged on the outside of the second inlet and outlet wire interface 19. The sealing bolt clip 3 includes a second hanging structure 26 and a stopping structure 27. The second hanging structure 26 and the stopping structure 27 are integrally connected, wherein the stopping structure 27 stops and cooperates with the sealing bolt to prevent the sealing bolt from falling off or shifting. A second boss 22 is provided on the main body 12, and the second boss 22 is hung and cooperated with the second hanging structure 26. The sealing bolt clip 3 is clamped on the main body 12 by hanging the second boss 22 with the second hanging structure 26.

[0041] When implementing Example 10, a main body assembly 2, an upper cover assembly 1, and a sealing plug clip 3 with a first inlet and outlet wire interface 18 and a second inlet and outlet wire interface 19 arranged in a stepped manner are respectively manufactured, wherein the main body 12 of the main body assembly 2 and the conducting structure 20 are integrally formed by injection molding, and the transmission structure 13 is fixed to the main body 12 by means of a fastening bolt 29. When the wires are respectively inserted into the first inlet and outlet wire interface 18 and the second inlet and outlet wire interface 19, the upper conductor 31 is connected and fixed to the wire by means of a first bolt 24, and the lower conductor 32 is connected and fixed to the wire by means of a connecting bolt 14. A sealing plug is inserted into the second inlet and outlet wire interface 19 and the sealing plug is limited by means of a sealing plug clip 3. On the second inlet and outlet wire interface 19, after the wire is connected to the transmission structure 13, the upper cover assembly 1 is plugged into the main body 12. At this time, the two-component foamed elastomer 5 on the upper cover assembly 1 cooperates with the annular side wall 21 of the main body 12, and the first hanging structure 11 is hung and matched with the first boss 30 to complete the plug-in pre-installation of the main body 12 and the upper cover assembly 1. After the main body 12 and the upper cover assembly 1 are plugged into the pre-installation, the rotating part 36 on the connecting structure 16 is directly put on the cylindrical pin 28, and the clamping part 37 on the connecting structure 16 is stopped and clamped with the limit platform 7, so that the main body 12 and the upper cover assembly 1 can be buckled and clamped, and the installation of the entire vehicle primary power distribution center can be completed.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A single-sided stepped in-and-out wire interface automobile primary power distribution center, comprising a main body assembly (2), characterized in that: The main body assembly (2) is provided with an upper cover assembly (1), the main body assembly (2) comprises a main body (12), the main body (12) is provided with a first inlet and outlet wire interface (18) and a second inlet and outlet wire interface (19), the first inlet and outlet wire interface (18) and the second inlet and outlet wire interface (19) are located on the same side of the main body (12), the first inlet and outlet wire interface (18) and the second inlet and outlet wire interface (19) are arranged in a stepped manner, the main body (12) is provided with a transmission structure (13), the transmission structure (13) comprises an upper conductor (31) for connecting a wire inserted into the first inlet and outlet wire interface (18), the upper conductor (31) is integrally connected with a lower conductor (32) for connecting a wire inserted into the second inlet and outlet wire interface (19), and the upper conductor (31) and the lower conductor (32) are arranged in a stepped manner.

2. The single-sided stepped in-and-out wire interface automobile primary power distribution center according to claim 1, characterized in that: The main body (12) is provided with a conducting structure (20), one end of the conducting structure (20) is located in the first inlet and outlet wire interface (18), and the other end is connected to an upper layer fuse (15), and the upper layer fuse (15) is connected to an upper layer conductor (31).

3. The single-sided stepped in-and-out wire interface automobile primary power distribution center according to claim 2 is characterized in that: The conducting structure (20) comprises a conductive sheet (23), two ends of the conductive sheet (23) are respectively connected to a first bolt (24) and a second bolt (25), the first bolt (24) is located in a first inlet and outlet wire interface (18), the second bolt (25) is connected to an upper fuse (15), a partition (17) is provided between the first bolt (24) and the second bolt (25), and the partition (17) is integrally connected to the main body (12).

4. The single-sided stepped in-and-out wire interface automobile primary power distribution center according to claim 3 is characterized in that: The lower conductor (32) is connected to a lower fuse (33), and the lower conductor (32) is integrally connected to a connecting bolt (14) for fixing a wire.

5. The single-sided stepped in-and-out wiring interface automobile primary power distribution center according to claim 4, characterized in that: The first inlet and outlet wire interface (18) protrudes toward the outside of the main body (12) relative to the second inlet and outlet wire interface (19).

6. The single-sided stepped in-and-out wire interface automobile primary power distribution center according to any one of claims 1 to 5, characterized in that: The main body (12) and the exterior of the upper cover assembly (1) are clamped together via a connecting structure (16); the connecting structure (16) comprises a clamp body (34), the clamp body (34) is located outside the main body (12) and the upper cover assembly (1), the clamp body (34) comprises a deformation portion (35), and two ends of the deformation portion (35) are respectively provided with a rotating portion (36) and a clamping portion (37), a top surface of the upper cover assembly (1) is provided with a limit platform (7), and a cylindrical pin (28) is provided outside the main body (12), and when the main body (12) and the upper cover assembly (1) need to be locked, the rotating portion (36) is sleeved on the cylindrical pin (28), and the clamping portion (37) is engaged with the limit platform (7) for blocking.

7. The single-sided stepped in-and-out wire interface automobile primary power distribution center according to claim 6, characterized in that: The longitudinal section of the clamping portion (37) is V-shaped, the longitudinal section of the limiting platform (7) is triangular, the surface where the limiting platform (7) and the clamping portion (37) stop is a stop surface, and the angle between the stop surface and the top surface of the upper cover assembly (1) is greater than 45°.

8. The single-sided stepped in-and-out wire interface automobile primary power distribution center according to claim 7, characterized in that: The upper cover assembly (1) comprises a cover body (4), the cover body (4) is provided with an annular groove (6), a two-component foamed elastic body (5) matched with the annular side wall (21) of the main body (12) is provided in the annular groove (6); the cover body (4) comprises a horizontal area and an inclined area, the horizontal area and the inclined area are connected as one body, the limit platform (7) is located on the horizontal area; the horizontal area is provided with a protective wall (8), the protective wall (8) is located on the side of the limit platform (7).

9. The single-sided stepped in-and-out wire interface automobile primary power distribution center according to claim 8, characterized in that: The horizontal area is provided with an arc-shaped hole (9) that cooperates with the first wire inlet and outlet interface (18) to limit the wire, and a plurality of the arc-shaped holes (9) are arranged at intervals on the horizontal area, and a protruding structure (10) is provided between two adjacent arc-shaped holes (9); the inclined area is provided with a first hanging structure (11), and the main body (12) is provided with a first boss (30), and the first hanging structure (11) is hung and cooperated with the first boss (30).

10. The single-sided stepped in-and-out wiring interface automobile primary power distribution center according to claim 9, characterized in that: The main body (12) is provided with a sealing plug clamp (3) for limiting the sealing plug at the second inlet and outlet wire interface (19), and the sealing plug clamp (3) is clamped with the main body (12).

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