Power Block

Abstract

To provide a power supply block capable of being downsized by simplifying its structure.SOLUTION: There is provided a power supply block 100 comprising: a pair of bus bars 10; and a housing 50 that accommodates the bus bars 10 in parallel. Each bus bar 10 has: a belt-like main body part 11; a plurality of first terminal connection parts 12; a plurality of second terminal connection parts 14 connectable with fuses 36; and fusible parts 13 between the main body part 11 and the plurality of first terminal connection parts 12. The housing 50 has: a lower housing 20 that accommodates the plurality of first terminal connection parts 12 of the bus bar 10; and an upper housing 30 that accommodates the plurality of second terminal connection parts 14 of the bus bar 10, fitting the lower housing 20 detachably. The upper housing 30 has: a fuse accommodation part 31 that accommodates a plurality of fuses 36 respectively connected with the plurality of second terminal connection parts 14; and a fusible element accommodation part 32 that accommodates a main fusible element 45 connecting between the pair of bus bars 10.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a power supply block. [Background technology]

[0002] 2. Description of the Related Art Vehicles such as automobiles are equipped with electric junction boxes for supplying power and transmitting signals to various devices. One such electrical connection box is divided into a block main body portion having a bus bar and a separate block portion having a component mounting portion, and the separate block portion is mounted on the block main body portion (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-11929 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned electrical connection box, the bus bar includes a bus bar body and a component connection portion separate from the bus bar body, and the fuse is connected to the separate component connection portion, which results in a complex configuration of the housing that accommodates the bus bar body and the component connection portion separate from the bus bar body.

[0005] In addition, since the component connection portion formed on the busbar body and the component connection portion to which the fuse separate from the busbar body is connected are housed in the housing facing in the same direction, these component connection portions need to be mounted in the housing in a shifted position so as not to overlap each other, which results in an increase in the size of the electrical junction box.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a power supply block that is miniaturized by simplifying the structure. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the power supply block according to the present invention has the following features (1) to (3). (1) A power supply block including a pair of bus bars and a housing that accommodates the bus bars in parallel, The bus bar includes: A belt-shaped main body portion; a plurality of first terminal connection portions formed in parallel on one side of the main body portion; a plurality of second terminal connection parts formed in parallel on the other side of the main body, each of which can be connected to a fuse; a fusible portion provided between the main body portion and the plurality of first terminal connection portions and connecting the main body portion and the first terminal connection portions; having The housing includes: a lower housing that accommodates the first terminal connection portions of the bus bar; an upper housing that is detachably fitted to the lower housing and that accommodates the second terminal connection portions of the bus bar; having The upper housing includes: a fuse accommodating section that accommodates a plurality of fuses that are respectively connected to the plurality of second terminal connection sections; and a fuse accommodating section that accommodates a main fuse that connects the pair of bus bars to each other; having Power block.

[0008] According to the power supply block having the configuration of (1) above, a first terminal connection portion having a fusible portion and a second terminal connection portion to which a fuse can be connected are integrally formed in one bus bar. The pair of bus bars are then accommodated in parallel in a housing. Therefore, the configuration of the housing can be simplified and made smaller than when a plurality of bus bars, each having the first terminal connection portion and the second terminal connection portion formed therein, are accommodated in the housing. Furthermore, since the fuse accommodating portion accommodating a plurality of fuses and the fusible element accommodating portion accommodating the main fusible element are integrally formed in the housing that accommodates the bus bars, a separate housing for accommodating the fuses and the main fusible element is not required, and further miniaturization can be achieved.

[0009] (2) The first terminal connection portion and the second terminal connection portion are formed on the same plane as the main body portion of the bus bar. The power supply block according to (1) above.

[0010] According to the power supply block having the above configuration (2), the simplified shape of the bus bars allows the housing that houses the bus bars to be made thinner, thereby enabling further miniaturization.

[0011] (3) The bus bar has a fusible portion covered by a light-transmitting cover integrally formed by resin molding. A power supply block according to (1) or (2) above.

[0012] According to the power supply block having the above-mentioned configuration (3), the fusible parts are protected by the translucent cover while the state of the fusible parts can be easily visually confirmed through the translucent cover. Also, by accommodating the bus bar, whose fusible parts are covered in advance with the translucent cover integrally molded by resin molding, in the housing, assembly can be easily performed. Effect of the Invention

[0013] According to the present invention, it is possible to provide a power supply block that is compact due to a simplified structure.

[0014] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following description of the embodiment of the present invention (hereinafter, referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view of a power supply block according to the present embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the power supply block according to the present embodiment. [Diagram 3] FIG. 3 is a perspective view of a pair of bus bars. [Figure 4] FIG. 4 is a side view of the power supply block with the upper housing removed. [Diagram 5] FIG. 5 is a perspective view of a power supply block according to a reference example. [Figure 6] FIG. 6 is an exploded perspective view of a power supply block according to a reference example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0017] Fig. 1 is a perspective view of a power supply block according to the present embodiment, Fig. 2 is an exploded perspective view of the power supply block according to the present embodiment, and Fig. 3 is a perspective view of a pair of bus bars.

[0018] 1 and 2, a power supply block 100 according to this embodiment includes a pair of bus bars 10 and a housing 50. The power supply block 100 is mounted on a vehicle such as an automobile to supply power and transmit signals to various devices.

[0019] The bus bar 10 is a plate material made of a conductive metal material such as copper or a copper alloy, and is formed in a band shape by pressing a metal plate.

[0020] As shown in FIG. 3, the busbar 10 has a main body portion 11, a plurality of first terminal connection portions 12, a fusible portion 13, a plurality of second terminal connection portions 14, and a fastening portion 15.

[0021] The first terminal connection portions 12 are formed in parallel on one side of the body portion 11. In this example, the busbar 10 has six first terminal connection portions 12, and three of the first terminal connection portions 12 have fastening holes 12a.

[0022] A fusible portion 13 is provided between each of the first terminal connection portions 12 and the main body portion 11. These fusible portions 13 melt when a current exceeding the rated current flows, and cut off the electrical connection between the main body portion 11 and the first terminal connection portion 12.

[0023] The second terminal connection parts 14 are formed in parallel on the other side opposite to the side on which the first terminal connection parts 12 are formed in the main body part 11. These second terminal connection parts 14 are fuse terminals consisting of bifurcated tuning fork terminals.

[0024] The fastening portion 15 is provided at one end of the main body portion 11, and this fastening portion 15 is formed with a fastening hole 15a.

[0025] The busbar 10 has a first terminal connection portion 12 formed on one side of the main body portion 11 and a second terminal connection portion 14 formed on the other side of the main body portion 11, each of which is formed on the same plane as the main body portion 11.

[0026] The busbar 10 is provided with a light-transmitting cover 17 formed into a plate shape. The light-transmitting cover 17 is formed from an insulating synthetic resin, and is transparent or translucent. The light-transmitting cover 17 is molded integrally with the busbar 10 by resin molding. The fusible portion 13 of the busbar 10 is covered with the light-transmitting cover 17. This allows the fusible portion 13 of the busbar 10 to be visible through the light-transmitting cover 17.

[0027] The housing 50 has a lower housing 20 and an upper housing 30. The upper housing 30 is detachably attached to an upper portion of the lower housing 20. The lower housing 20 and the upper housing 30 are each molded from an insulating synthetic resin.

[0028] A plurality of insertion holes 21 are formed in the lower housing 20. These insertion holes 21 are formed along both side portions of the lower housing 20. The lower housing 20 has a plurality of (three in this example) accommodating portions 22. Each of the accommodating portions 22 has an accommodating slit portion 23 into which a nut 24 for fastening and connecting a terminal of a power line or the like to the first terminal connecting portion 12 is inserted from below. The lower housing 20 also has locking pieces 25 protruding upward on its periphery, and each of the locking pieces 25 has a locking hole 25a formed therein.

[0029] The upper housing 30 has a fuse accommodating portion 31 and a fusible element accommodating portion 32. The fuse accommodating portion 31 is formed in a rectangular parallelepiped shape, and the fusible element accommodating portion 32 is provided integrally with one end side of the fuse accommodating portion 31.

[0030] The fuse accommodating portion 31 has a plurality of insertion holes 35 formed in its upper portion. These insertion holes 35 are arranged in two rows along the longitudinal direction of the fuse accommodating portion 31. A fuse 36 is inserted and accommodated in each of the insertion holes 35. The fuse accommodating portion 31 has a plurality of locking claws 37 formed on the periphery of its lower portion.

[0031] The fusible element receiving portion 32 has a fuse mounting hole 40 formed in the upper portion and openings 41 formed on both sides. A nut 42 is inserted into the fusible element receiving portion 32 from the lower portion to be attached.

[0032] The main fusible element 45 is inserted into the fuse mounting hole 40 and mounted in the fusible element housing 32. Then, the leg 46 having the hole 46a of the main fusible element 45 is disposed in a position facing the nut 42 mounted from below the fusible element housing 32.

[0033] FIG. 4 is a side view of the power supply block with the upper housing removed. As shown in Fig. 4, a pair of bus bars 10 are assembled in parallel to the upper part of lower housing 20 constituting housing 50 by inserting first terminal connection portions 12 of these bus bars 10 into insertion holes 21. When bus bars 10 are assembled to the upper part of lower housing 20 in this manner, these bus bars 10 are positioned by abutting light-transmitting cover 17 provided to cover fusible portion 13 against the upper surface of lower housing 20. When bus bars 10 are assembled to lower housing 20, these bus bars 10 are arranged in parallel to each other. When bus bars 10 are attached to lower housing 20, first terminal connection portions 12 having fastening holes 12a are arranged in positions facing nuts 24 inserted into accommodating slit portions 23 of accommodating portions 22.

[0034] The upper housing 30 is assembled to the lower housing 20 to which the bus bar 10 is attached, so as to cover the lower housing 20 from above. When the upper housing 30 is assembled to the top of the lower housing 20, the bus bar 10 is inserted from below into the fuse accommodating portion 31 of the upper housing 30. As a result, the second terminal connection portions 14 of the bus bar 10 are accommodated in the fuse accommodating portion 31 of the upper housing 30, and further, the main body portion 11 and the fusible portion 13 provided with the light-transmitting cover 17 are covered by the fuse accommodating portion 31. When the upper housing 30 is assembled to the lower housing 20, the locking claws 37 formed in the fuse accommodating portion 31 of the upper housing 30 fit into the locking holes 25a formed in the locking pieces 25 of the lower housing 20. As a result, the upper housing 30 is engaged in an assembled state to the lower housing 20 and the assembled state is maintained, and a pair of bus bars 10 is accommodated in a housing 50 consisting of the lower housing 20 and the upper housing 30.

[0035] Furthermore, when the upper housing 30 is assembled to the lower housing 20, one end of the busbar 10 having the fastening portion 15 with the fastening hole 15a formed therein is inserted into the fusible element accommodating portion 32 and disposed in a position facing the nut 42. This allows the hole 46a of the leg 46 of the main fusible element 45 inserted and mounted in the fuse mounting hole 40 to communicate with the fastening hole 15a of the fastening portion 15 of the busbar 10. In this state, the bolt 48 is inserted from the opening 41 of the fusible element accommodating portion 32 into the fastening hole 15a of the fastening portion 15 and the hole 46a of the leg 46 of the main fusible element 45, and screwed into the nut 42. Then, in the fusible element accommodating portion 32, the fastening portion 15 of the busbar 10 is connected to the leg 46 of the main fusible element 45 by being fastened together with the bolt 48.

[0036] In the power supply block 100 thus assembled, the fuse 36 is inserted into the insertion hole 35 formed in the fuse accommodating portion 31 of the upper housing 30 constituting the housing 50. As a result, the fuse 36 is connected to the second terminal connection portion 14 of each bus bar 10 accommodated in the housing 50.

[0037] Here, a power supply block according to a reference example will be described. Fig. 5 is a perspective view of a power supply block according to a reference example, and Fig. 6 is an exploded perspective view of the power supply block according to a reference example.

[0038] 5 and 6, a power supply block 1 according to the reference example includes a housing 2, into which a plurality of bus bars 3, 4 are inserted and accommodated from the lower side. Various fuses 5 of different sizes and shapes are attached to the upper part of the housing 2 and connected to the bus bars 3, 4 accommodated in the housing 2.

[0039] The power supply block 1 according to this reference example includes a housing 2 having a complex shape in which various fuses 5 are attached, and further includes bus bars 3, 4 having mutually different complex shapes. As a result, in this power supply block 1, the cost of the housing 2 and the bus bars 3, 4 increases, and the housing 2 becomes large in size in order to accommodate the mutually different complex shapes of the bus bars 3, 4.

[0040] In contrast, according to the power supply block 100 of this embodiment, the first terminal connection portion 12 having the fusible portion 13 and the second terminal connection portion 14 to which the fuse 36 can be connected are integrally formed in one bus bar 10. A pair of bus bars 10 are accommodated in parallel in the housing 50, so that the configuration of the housing 50 can be simplified and made smaller. Furthermore, the fuse accommodating portion 31 accommodating the multiple fuses 36 and the fusible element accommodating portion 32 accommodating the main fusible element 45 are integrally formed in the housing 50 that accommodates the bus bars 10, so that a separate housing for accommodating the fuses 36 and the main fusible element 45 is not required, and further miniaturization can be achieved.

[0041] Moreover, the first terminal connection portion 12 and the second terminal connection portion 14 are formed on the same plane as the main body portion 11 of the busbar 10. Therefore, by simplifying the shape of the busbar 10, the housing 50 that accommodates the busbar 10 can be made thinner, thereby enabling further miniaturization.

[0042] Moreover, the busbar 10 has the fusible portion 13 covered by the translucent cover 17 integrally molded by resin molding. Therefore, the fusible portion 13 is protected by the translucent cover 17, and the state of the fusible portion 13 can be easily visually confirmed through the translucent cover 17. Moreover, by accommodating the busbar 10, in which the fusible portion 13 is covered in advance by the translucent cover 17 integrally molded by resin molding, in the housing 50, assembly can be easily performed.

[0043] In the above embodiment, an example is given of the case where the translucent cover 17 covering the soluble portion 13 is integrally molded onto the busbar 10 by resin molding, but a separate translucent cover 17 may also be attached to the busbar 10 so as to cover the soluble portion 13.

[0044] The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, etc. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary as long as the present invention can be achieved, and are not limited.

[0045] Here, the features of the power supply block according to the embodiment of the present invention described above will be briefly summarized and listed in the following [1] to [3]. [1] A power supply block (100) including a pair of bus bars (10) and a housing (50) that accommodates the bus bars (10) in parallel, The bus bar (10) is A belt-shaped main body portion (11); a plurality of first terminal connection portions (12) formed in parallel on one side of the main body portion (11); a plurality of second terminal connection portions (14) formed in parallel on the other side of the body portion (11), each of which can be connected to a fuse (36); a fusible portion (13) provided between the main body portion (11) and the plurality of first terminal connection portions (12) and connecting the main body portion (11) and the first terminal connection portions (12); having The housing (50) is a lower housing (20) that accommodates the plurality of first terminal connection portions (12) of the bus bar (10); an upper housing (30) that is detachably fitted into the lower housing (20) and that accommodates the plurality of second terminal connection portions (14) of the bus bar (10); having The upper housing (30) is a fuse accommodating portion (31) that accommodates a plurality of fuses (36) that are respectively connected to the plurality of second terminal connection portions (14); and a fusible element accommodating portion (32) that accommodates a main fusible element (45) that connects the pair of bus bars (10); having Power block.

[0046] [2] The first terminal connection portion (12) and the second terminal connection portion (14) are formed on the same plane as the main body portion (11) of the bus bar (10). The power supply block described in [1] above.

[0047] [3] The bus bar (10) has a light-transmitting cover (17) integrally molded by resin molding, and the fusible portion (13) is covered with the light-transmitting cover (17). 2. A power supply block according to claim 1 or 2. [Explanation of symbols]

[0048] 10 Bus bar 11 Main body 12 First terminal connection part 13 Soluble part 14 Second terminal connection 15 Fastening Part 15a Fastening hole 17 Translucent cover 20 Lower housing 21 Insertion hole 22 Storage unit 23 Storage slit 24 Nut 25 Locking piece 25a Locking hole 30 Upper housing 31 Fuse housing 32 Fusible element housing 36 Fuse 37 Locking claw 40 Fuse mounting hole 41 Opening 45 Main fusible element 50 Housing 100 Power Block

Claims

1. A power supply block including a pair of bus bars and a housing that accommodates the bus bars in parallel, The bus bar includes: A belt-shaped main body portion; a plurality of first terminal connection portions formed in parallel on one side of the main body portion; a plurality of second terminal connection parts formed in parallel on the other side of the main body, each of which can be connected to a fuse; a fusible portion provided between the main body portion and the first terminal connection portions and connecting the main body portion and the first terminal connection portions; having The housing includes: a lower housing that accommodates the first terminal connection portions of the bus bar; an upper housing that is detachably fitted to the lower housing and that accommodates the second terminal connection portions of the bus bar; having The upper housing includes: a fuse accommodating portion that accommodates a plurality of fuses that are respectively connected to the plurality of second terminal connection portions; and a fuse accommodating portion that accommodates a main fuse that connects the pair of bus bars to each other; having Power block.

2. the first terminal connection portion and the second terminal connection portion are formed on the same plane as the main body portion of the bus bar, The power block of claim 1 .

3. The bus bar has a fusible portion covered by a light-transmitting cover integrally formed by resin molding. The power supply block according to claim 1 or 2.

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