Vehicle fuse box

Abstract

The vehicle fuse box comprises an upper box body, a lower box body, a sealing ring and a sealing connection assembly, the sealing connection assembly comprises a pair of heat shrink tubes and a pair of metal pole pieces, and when the upper box body and the lower box body are buckled, the waterproof sealing ring is sleeved on the lower box body to seal a gap between the upper box body and the lower box body; the first ends of the pair of pole pieces are located in the fuse cavity of the lower box body and are in matched insertion connection with the pair of slots of the fuse, and the second ends, opposite to the first ends, of the pair of pole pieces extend out of the lower box body and are connected with the wires through the pair of heat shrink tubes respectively. According to the utility model, the upper box body and the lower box body are buckled in a sealing manner through the sealing ring, and the first ends of the pair of pole pieces are positioned in the fuse cavity of the lower box body, so that the insertion of the fuse is facilitated, the sealing and waterproof problems of the fuse box are solved, and the terminal of the vehicle fuse box has good insulativity and electrical connectivity.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to an automotive fuse box. Background Art

[0002] With the general improvement of automotive electrification and electronization, the functional configurations and special circuit configurations of automobiles have increased. Conventional circuit fuses are mostly integrated in the domain fuse box, while some special circuits need to be arranged in the fuse box or outside the wire harness according to local conditions to meet the wire length, replaceability, and operation convenience of special circuits. According to the different requirements of the dry area, wet area, and fuse model, the box is developed. Automotive fuse boxes can be divided into: small automotive fuse boxes, medium-sized automotive fuse boxes, and large automotive fuse boxes according to the size of the installed fuses. When selecting an automotive fuse box, the current size of the automotive fuses used and the size requirements of the fuses should be considered to select different fuse boxes.

[0003] Generally, the fuse box used for Mini-type fuses is of an inline design, that is, it is connected in series to the circuit, as shown in Figure 4 , the fuse box is insertable in the middle, and the lid is connected to the fuse box body in the form of a buckle, and the sealing performance of the lid is poor, and the waterproof level only reaches the splash-proof level. Moreover, the wire inlet of the existing fuse box is generally large and is very easy to get dusty.

[0004] Therefore, it is necessary to provide an automotive fuse box to solve the problems of the sealing and waterproofing of the fuse box and its installation in the vehicle structure. Summary of the Utility Model

[0005] In view of the above partial disadvantages of the prior art, the utility model provides an automotive fuse box, which solves the problems of the sealing and waterproofing of the fuse box and its installation in the vehicle structure through the design of the upper box body and the lower box body.

[0006] An automotive fuse box provided by the utility model includes:

[0007] An upper box body;

[0008] A lower box body, a columnar middle part is provided at the middle position of the lower box body, and an insurance cavity for accommodating fuses is provided in the columnar middle part;

[0009] A sealing ring; and

[0010] A sealing connection assembly, the sealing connection assembly includes a pair of heat shrinkable tubes and a corresponding pair of pole pieces;

[0011] Wherein, the upper box body and the lower box body are snap-connected, and the sealing ring is sleeved on the columnar middle part of the lower box body to seal the gap between the upper box body and the lower box body; the first end of each pole piece is located in the fuse cavity of the lower box body and is inserted and matched with a pair of slots of the fuse, and the second end of the pole piece extends outside the lower box body and is respectively connected to the wire through corresponding heat shrinkable tubes.

[0012] In an embodiment of the present utility model, the sealing ring is a multi-strip waterproof sealing ring, and a groove is formed between the bottom and the outer peripheral wall of the lower box body and the wall body of the columnar middle part. The sealing ring is arranged in the groove, and the height of the sealing ring is higher than the height of the groove.

[0013] In an embodiment of the present utility model, the end of the first end of each pole piece is in an inverted T shape. The first end is perpendicular to the second end of the pole piece, is located in the fuse cavity of the lower box body, and forms a fuse socket with the fuse cavity. When the fuse is installed in place, the first end of each pole piece contacts the fuse; the first end of each pole piece and the lower box body are fixed integrally by an injection molding process.

[0014] In an embodiment of the present utility model, each heat shrinkable tube sequentially includes an insertion tube section, a crimping tube section, and a sleeve tube section. The second end of each pole piece is respectively connected to the wire through the corresponding heat shrinkable tube, and the sleeve tube sections of the corresponding pole pieces are respectively sleeved outside the wire.

[0015] In an embodiment of the present utility model, on the opposite first pair of side walls of the outer peripheral wall of the lower box body, connecting plugs are respectively horizontally extended outwards. The insertion tube sections of each heat shrinkable tube are respectively sleeved and matched on the corresponding connecting plugs. An intermediate section integrally connected to the two is provided between the first end and the second end of the pole piece. The second end and the intermediate section are in the same plane, and the intermediate section penetrates through the corresponding connecting plug and extends out of the fuse cavity of the lower box body.

[0016] In an embodiment of the present utility model, a pair of pole pieces are respectively a first pole piece and a second pole piece. The second ends of the first pole piece and the second pole piece are respectively crimped or welded to the crimping ends of the wire in the crimping tube sections of the corresponding heat shrinkable tubes.

[0017] In an embodiment of the present utility model, the second end of the first pole piece is a horizontally extending sheet. An intermediate section integrally connected to the two is provided between the first end and the second end. The second end and the intermediate section are in the same plane and are in an L-shaped structure. The crimping end of the corresponding wire is a sheet, so that at least part of the second end of the first pole piece and the crimping end of the wire are overlapped and arranged.

[0018] In one embodiment of the present utility model, an intermediate section integrally connected to both the first end and the second end of the second pole piece is provided between the first end and the second end of the second pole piece. The second end and the intermediate section are located in the same plane and form an L-shaped structure. Both sides of the second end are curled towards the middle to form an arc-shaped slot extending horizontally. The crimping end of the wire is arc-shaped, such that the crimping end of the wire is inserted into the arc-shaped slot at the second end of the second pole piece.

[0019] In one embodiment of the present utility model, a buckle and an avoidance opening are respectively provided on the second pair of opposite side walls of the outer peripheral wall of the lower box body. A clamping groove and an arrow-shaped buckle are respectively provided on the corresponding two sides of the upper box body. The buckle is cooperatively clamped in the clamping groove, such that the upper box body and the lower box body are clamped. The arrow-shaped buckle extends outwards through the avoidance opening and is clamped with a kidney-shaped hole on the whole vehicle structure or a corresponding vehicle sheet metal part.

[0020] In one embodiment of the present utility model, a limiting inclined plate is provided at the upper end of the side wall of the columnar middle part of the lower box body. When the sealing ring is arranged in the groove, the limiting inclined plate cooperates with the sealing ring to prevent the sealing ring from falling off.

[0021] The beneficial technical effects of the present utility model at least include:

[0022] A vehicle fuse box of the present utility model includes an upper box body, a lower box body, a sealing ring and a sealing connection assembly. A fuse cavity for accommodating fuses is provided in the columnar middle part of the lower box body. The sealing connection assembly includes a pair of heat shrinkable tubes and a pair of pole pieces. When the upper box body and the lower box body are buckled, the sealing ring is sleeved on the columnar middle part of the lower box body to seal the gap between the upper box body and the lower box body; the first ends of the pair of pole pieces are located in the fuse cavity of the lower box body and are cooperatively inserted into a pair of slots of the fuse. The second ends of the pair of pole pieces opposite to the first ends extend outside the lower box body and are respectively connected to wires through a pair of heat shrinkable tubes. Therefore, when the upper box body and the lower box body are buckled, they are sealed by the sealing ring, and the first ends of the pair of pole pieces are located in the fuse cavity of the lower box body, which facilitates the insertion and installation of the fuse, solves the problem of sealing and waterproofing of the fuse box, enables the terminals of the vehicle fuse box of the present utility model to have good insulation and electrical connection properties, and the fuse selection range of the fuse box is 0 - 60A when matching different wire diameters. Description of the Drawings

[0023] Figure 1 A three-dimensional schematic diagram of a vehicle fuse box provided by an embodiment of the present utility model;

[0024] Figure 2 is Figure 1 exploded view of;

[0025] Figure 3 is Figure 2 an installation schematic diagram of the lower box body, the sealing assembly and the sealing ring of;

[0026] Figure 4 Schematic circuit diagram for the use of a vehicle fuse box provided by an embodiment of the present utility model;

[0027] Figure 5 Electrical schematic diagram for the use of a vehicle fuse box provided by another embodiment of the present utility model.

[0028] Explanation of component symbols:

[0029] Upper box body 1, card slot 11, arrow-shaped buckle 12, lower box body 2, columnar middle part 20, sealing ring 3, fuse 4, slot 41, wire 5, fuse cavity 21, limiting inclined plate 211, heat shrinkable tube 22, inserted pipe section 221, pressed pipe section 222, sleeved pipe section 223, first pole piece 23, second pole piece 23', first end 231 of the first pole piece 23, second end 232 of the first pole piece 23, middle section 233 of the first pole piece 23, first end 231' of the second pole piece 23', first end 232' of the second pole piece 23', middle section 233' of the second pole piece 23', groove 24, first side wall 25, second side wall 26, connection plug 27, third side wall 28, buckle 281, fourth side wall 29. Detailed implementation manners

[0030] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0031] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0032] In the following description, a large number of details are explored to provide a more thorough explanation of the embodiments of the present utility model. However, it is obvious to those skilled in the art that the embodiments of the present utility model can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present utility model difficult to understand.

[0033] In an embodiment of the present utility model, please refer to Figure 1, the present utility model provides a vehicle fuse box of the present utility model, which includes an upper box body 1, a lower box body 2, a sealing ring 3 and a sealing connection assembly. The upper box body 1 and the lower box body 2 are both integrally formed and are snap-connected. The sealing ring 3 is a waterproof sealing ring. A columnar middle part 20 is provided at the middle position of the lower box body 2, and an insurance cavity 21 for accommodating a fuse 4 is provided in the columnar middle part 20; the sealing connection assembly includes a pair of heat shrinkable tubes and a pair of pole pieces, and each pole piece is a metal pole piece. Among them, the sealing ring 3 is sleeved on the columnar middle part 20 of the lower box body 2 to seal the gap between the upper box body 1 and the lower box body 2; the first end 231 of each pole piece is located in the insurance cavity 21 of the lower box body 2 and is inserted into cooperation with a pair of slots 41 of the fuse 4, and the second end 232 of the pole piece opposite to its first end 231 extends outside the lower box body 2 and is respectively connected to a wire 5 through the corresponding heat shrinkable tube 22. Therefore, the sealing ring 3 of the present utility model plays a waterproof role for the vehicle fuse box. The first end 231 of each pole piece is located in the insurance cavity 21, ensuring the insulation of the first end 231 of each pole piece, improving the waterproof level of the vehicle fuse box, and enabling it to be used in a wet area environment. The problem of sealing and waterproofing of the fuse box is solved, making it reach the IP67 waterproof level.

[0034] In an embodiment of the present utility model, please refer to Figure 2 and Figure 3 , the sealing ring 3 is a multi-strip waterproof sealing ring. A groove 24 is formed between the outer peripheral wall and the bottom of the lower box body 2 and the wall of the columnar middle part 20. The sealing ring 3 is arranged in the groove 24, and the height of the sealing ring 3 is higher than the height of the groove 24. The first end 231 of each pole piece is in an inverted T shape, the first end 231 is perpendicular to the second end 232 and is located in the insurance cavity 21 of the lower box body 2. The first end of each pole piece and the insurance cavity 21 form a fuse socket. When the fuse 4 is installed in place, the first end of each pole piece contacts the fuse, and the first end and the lower box body are fixed integrally through an injection molding process, further ensuring the sealing and waterproof performance of the fuse box. At the same time, the fuse 4 can be directly inserted into the above-mentioned fuse socket, making its installation convenient and its electrical connection excellent.

[0035] In an embodiment of the present utility model, please refer to Figure 2 and Figure 3, each heat shrink tube 22 successively includes an insertion tube section 221, a crimping tube section 222, and a sleeve tube section 223. The second end 232 of each pole piece is respectively connected to the wire 5 through the corresponding heat shrink tube 22, and the corresponding sleeve tube sections 223 are respectively sleeved outside the wire 5. The outer peripheral wall of the lower box body 2 includes opposite first side walls 25 and second side walls 26, and opposite third side walls 28 and fourth side walls 29. A pair of connection plugs are respectively horizontally extended outward from the first side wall 25 and the second side wall 26. The insertion tube sections of each heat shrink tube 22 are respectively fitted and sleeved on the corresponding connection plugs 27. An intermediate section 233 integrally connected to both of them is provided between the first end 231 and the second end 232 of each pole piece. The second end 232 and the intermediate section 233 are located on the same horizontal plane, and the intermediate section 233 penetrates through the corresponding connection plug 27 and extends out of the fuse cavity 21 of the lower box body.

[0036] In an embodiment of the present utility model, a pair of pole pieces are respectively a first pole piece 23 and a second pole piece 23'. The second ends 232, 232' of the first pole piece 23 and the second gold piece 23' are respectively crimped or welded to the crimping ends of the wire 5 in the crimping tube sections 222 of the corresponding heat shrink tubes 22. The second end 232 of the first pole piece 23 is a horizontally extended sheet. An intermediate section 233 integrally connected to both of them is provided between the first end 231 and the second end 232. The second end 232 and the intermediate section 233 are located on the same plane and have an L-shaped structure. The crimping end corresponding to the wire 5 is a sheet, so that at least part of the second end 232 of the first metal pole piece 23 overlaps with the crimping end of the wire 5. An intermediate section 233' integrally connected to both of them is provided between the first end 231' and the second end 232' of the second pole piece 23'. The second end 232' and the intermediate section 233' are located on the same plane. The two sides of the second end 232' are curled toward the middle to form a horizontally extended arc-shaped slot in the middle. The crimping end corresponding to the wire 5 is an arc-shaped sheet, so that the crimping end of the wire 5 is fitted and inserted into the arc-shaped slot of the second end 232' of the second pole piece 23'. Under the condition of matching different wire diameters of the wire 5, the fuse selection range is 0 - 60A.

[0037] In an embodiment of the present utility model, please refer to Figure 2 and Figure 3 , snap fasteners 281 and relief openings are respectively provided on the third side wall 28 and the fourth side wall 29 of the lower box body 2. Corresponding slots 11 and arrow-shaped snap fasteners 12 are respectively provided on the corresponding two sides of the upper box body 1. The snap fastener 281 is fitted and buckled in the slot 11, so that the upper box body 1 and the lower box body 2 are snap-connected. The arrow-shaped snap fastener 12 extends outwards through the relief opening and is snap-connected to a kidney-shaped hole on the vehicle structure or the vehicle sheet metal part. The kidney-shaped hole can be a 7x12mm straight kidney-shaped hole for installing a vehicle fuse box. A limiting inclined plate 211 is provided at the upper end of the cavity wall of the columnar middle part 20 of the lower box body 2. When the sealing ring 3 is arranged in the groove 24, the limiting inclined plate 211 and the sealing ring 3 cooperate to prevent the sealing ring 3 from falling off.

[0038] In one embodiment of the present invention, please see Figure 4 , the circuit diagram of the vehicle fuse box of the utility model connected in series in the power supply circuit, indicating that the fuse box is connected in series in the circuit. Among them, the vehicle fuse box (M-Case), the power supply (Power supply) and the electrical appliance (E / E COMP).

[0039] For further information, see Figure 5 , in the electrical principle design of a certain electric vehicle, in order to deal with the problem of unlocking failure caused by power supply from both large and small batteries. The vehicle fuse box equipped with a 30A fuse is installed on the cover of the main body under the front bumper, below the waterline. The maintenance personnel removed the cover and connected the two P+ grounding plates shown in the figure to the positive pole of the emergency power supply, and P- to the negative pole of the emergency power supply for temporary grounding. According to the electrical schematic diagram, the fuse box can self-explode when the positive input current is too large to protect the 40A fuse in the rear engine compartment fuse box (EJB) from being blown. If this happens, the maintenance personnel can directly remove the 30A fuse in the box and replace it with a new fuse, which greatly improves the convenience of maintenance.

[0040] In summary, the upper box body 1 and the lower box body 2 of the vehicle fuse box of the utility model are integrally formed, and the upper box body 1 and the lower box body 2 are buckled, and a waterproof sealing ring 3 is provided on the lower box body 2 to seal the gap between the upper box body 1 and the lower box body 2. The fuse cavity 21 of the lower box body 2 and the first end 231 of a pair of pole pieces form a fuse socket, which not only makes it convenient to insert the fuse, but also ensures its good insulation and electrical connectivity. Its waterproof level can reach IP67 waterproof level, and it can also be used in wet areas. At the same time, it is small in size and when used with different wire diameters, the optional range of the fuse is 0-60A. An arrow-shaped buckle 12 is provided on the upper box body 1, which is easy to install by cooperating with the overall structure of the vehicle or the waist-shaped hole of the vehicle sheet metal. Therefore, the design of the fuse box provides more possibilities for the insurance layout of electrical parts, and can be flexibly used according to the actual needs of designers or users.

[0041] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of methods and computer program products according to various embodiments of the present utility model. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a portion of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions denoted in the blocks may occur in a different order than that denoted in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0042] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A vehicle fuse box, characterized in that: include: Upper box body (1); A lower box body (2), wherein a columnar middle portion (20) is provided in the middle of the lower box body (2), and a fuse cavity (21) for accommodating a fuse (4) is provided in the columnar middle portion (20); A sealing ring (3); and A sealed connection assembly, the sealed connection assembly comprising a pair of heat shrink tubes and a corresponding pair of pole pieces; The upper box body (1) and the lower box body (2) are buckled, and the sealing ring (3) is sleeved on the columnar middle part (20) of the lower box body (2) to seal the gap between the upper box body (1) and the lower box body (2); the first end (231) of each pole piece is located in the fuse cavity (21) of the lower box body (2) and is plugged into a pair of slots (41) of the fuse (4); the second end (232) of the pole piece extends to the outside of the lower box body (2) and is respectively connected to the wire (5) through the corresponding heat shrink tube (22).

2. The vehicle fuse box according to claim 1, characterized in that: The sealing ring (3) is a multi-strip waterproof sealing ring. A groove (24) is formed between the bottom and outer peripheral wall of the lower box body (2) and the wall of the columnar middle part (20). The sealing ring (3) is arranged in the groove (24), and the height of the sealing ring (3) is higher than the height of the groove (24).

3. The vehicle fuse box according to claim 1, characterized in that: The first end (231) of each pole piece is in an inverted T shape; the first end (231) is perpendicular to the second end (232) of the pole piece, and is located in the fuse cavity (21) of the lower box body (2), and forms a fuse socket with the fuse cavity (21); when the fuse (4) is installed in place, the first end (231) of each pole piece is in contact with the fuse (4); the first end (231) of each pole piece is fixed to the lower box body (2) by an injection molding process.

4. The vehicle fuse box according to claim 2, characterized in that: Each of the heat shrink tubes (22) comprises in sequence a plug-in tube section (221), a crimping tube section (222) and a sleeve tube section (223); the second end (232) of each pole piece is respectively connected to the wire (5) through the corresponding heat shrink tube (22), and the corresponding sleeve tube sections are respectively sleeved outside the wire (5).

5. The vehicle fuse box according to claim 4, characterized in that: A first pair of opposite side walls (25, 26) of the outer peripheral wall of the lower box body (2) are horizontally extended outwards and are respectively provided with connecting plugs (27); the plug-in tube section of each heat shrink tube (22) is respectively fitted and sleeved on the corresponding connecting plug (27); an intermediate section (233) integrally connected to the first end (231) and the second end (232) of the pole piece is provided between the first end (231) and the second end (232); the second end (232) and the intermediate section (233) are located in the same plane; the intermediate section (233) passes through the corresponding connecting plug (27) and extends out of the safety cavity (21) of the lower box body (2).

6. The vehicle fuse box according to claim 4, characterized in that: The pair of pole pieces are respectively a first pole piece (23) and a second pole piece (23'); the second ends (232, 232') of the first pole piece (23) and the second pole piece (23') are respectively crimped or welded to the crimping ends of the wire (5) in the crimping tube section (222) of the corresponding heat shrink tube (22).

7. The vehicle fuse box according to claim 6, characterized in that: The second end (232) of the first pole piece (23) is in the shape of a sheet extending horizontally, an intermediate section (233) integrally connected to the first end (231) and the second end (232) is provided between the first end (231) and the second end (232), the second end (232) and the intermediate section (233) are located in the same plane and are in an L-shaped structure, and the crimping end corresponding to the wire (5) is in the shape of a sheet, so that the second end (232) of the first pole piece (23) and the crimping end of the wire (5) are at least partially overlapped.

8. The vehicle fuse box according to claim 6, characterized in that: An intermediate section (233') integrally connected to the first end (231') and the second end (232') of the second pole piece (23') is provided between the first end (231') and the second end (232'), the second end (232') and the intermediate section (233') are located in the same plane, the two sides of the second end (232') are rolled up toward the middle to form a horizontally extending arc-shaped slot in the middle, and the crimping end corresponding to the wire (5) is in the shape of an arc-shaped sheet, so that the crimping end of the wire (5) is fitted and inserted into the arc-shaped slot of the second end (232') of the second pole piece (23').

9. The vehicle fuse box according to claim 5, characterized in that: A buckle (281) and an escape opening are respectively provided on the second pair of side walls (28, 29) opposite to the outer peripheral wall of the lower box body (2), and a clamping groove (11) and an arrow-shaped buckle (12) are respectively provided on the corresponding two sides of the upper box body (1), and the buckle (281) is buckled in the clamping groove (11) so that the upper box body (1) and the lower box body (2) are clamped together, and the arrow-shaped buckle (12) extends outward through the escape opening (291) and is clamped together with the waist-shaped hole on the whole vehicle structure or the corresponding vehicle sheet metal part.

10. The vehicle fuse box according to claim 2, characterized in that: A limiting inclined plate (211) is provided at the upper end of the side wall of the columnar middle portion (20) of the lower box body (2); when the sealing ring (3) is arranged in the groove (24), the limiting inclined plate (211) cooperates with the sealing ring (3) to prevent the sealing ring (3) from falling off.

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