Fuse block and power supply block equipped with same

Abstract

To provide a fuse block excellent in versatility and expandability and a power supply block having the same.SOLUTION: A fuse block 10 is assembled to a main block 30 having a fastening unit 41 to which a terminal 48 provided at an end section of an electric wire 47 is fastened. The fuse block includes a housing 11 to which a plurality of fuses 14 are mounted and a bus bar 12 housed in the housing 11. The bus bar 12 includes: a main body unit 20 formed in a band shape; a plurality of fuse terminal units 21 that are formed on one side of the main body unit 20 and to which the fuse 14 mounted on the housing 11 is connected; and a fastening piece 22 that is fastened together with a terminal 48 by a bolt 33 and a nut 49 relative to the fastening unit 41 of the main block 30 and are electrically connected to the electric wire 47.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a fuse block and a power supply block including the fuse block. [Background technology]

[0002] 2. Description of the Related Art Vehicles such as automobiles are equipped with electrical junction boxes for supplying power to various devices and transmitting signals. 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] Japanese Patent Application Laid-Open No. 2014-11929 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned electrical junction box, the separate block parts attached to the main block part are formed in a fixed, dedicated shape that can be attached to the main block part, resulting in poor versatility. Furthermore, because the bus bars on the main block part and the component attachment parts of the separate block parts are connected via the component connection parts of the bus bars, the number of component connections on the separate block parts is fixed in advance. This makes it difficult to expand functionality by increasing the number of components.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fuse block that is highly versatile and expandable, and a power supply block including the fuse block. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the fuse block and the power supply block including the fuse block according to the present invention are characterized by the following (1) to (5). (1) A fuse block that is assembled to a main block having a fastening portion to which a terminal provided at the end of an electric wire is fastened, a housing in which a plurality of fuses are mounted; a bus bar accommodated in the housing; Equipped with The bus bar is Extends in the first direction a main body formed in a strip shape; the main body a side edge portion on one side in a second direction perpendicular to the first direction in the to so as to be aligned along the first direction a plurality of fuse terminal portions to which the fuses mounted in the housing are connected; the main body the extension portion extends from an end portion on one side in the first direction to the other side in the second direction, a fastening piece fastened together with the terminal to the fastening portion of the main block by a fastener to be electrically connected to the electric wire; having Fuse block.

[0007] According to the fuse block having the configuration (1) above, the fastening pieces of the bus bar are fastened together with the terminals to the fastening portions of the main block with fasteners, and the bus bar is then connected together with the terminals to the fastening portions of the main block, and the fuse block is assembled to the main block, thereby easily expanding its functionality. In other words, according to the present invention, a fuse block with excellent versatility and expandability can be obtained.

[0008] (2) The housing is arranged parallel to the main block with the fastening pieces of the bus bars fastened together with the fastening portions. The fuse block according to (1) above.

[0009] According to the fuse block having the configuration (2) above, when it is assembled to the main block, the housing that accommodates the bus bars is arranged parallel to the main block, thereby ensuring good versatility while achieving a compact overall size.

[0010] (3) each of the housing and the main block has a shape whose longitudinal direction is in the first direction; The housing has the fastening piece of the bus bar Located on the other side of the main block in the first direction In a state where they are fastened together at the fastening portions, an end portion of the housing on one side in the first direction and an end portion of the main block on the other side in the first direction overlap in the first direction, a portion of the housing other than the end portion on the one side protrudes from the main block to the other side in the first direction, and a portion of the main block other than the end portion on the other side protrudes from the housing to the one side in the first direction, extending along the main block in a direction away from the main block; The fuse block according to (1) above.

[0011] According to the fuse block having the configuration (3) above, when it is assembled to the main block, the housing that accommodates the bus bar extends along the main block in a direction away from the main block, thereby ensuring good versatility while reducing the bulkiness of the external shape.

[0012] (4) A power supply block in which the fuse block according to any one of (1) to (3) above is assembled to a main block, The main block comprises: a main bus bar having a fastening portion to which a terminal provided at an end of an electric wire is fastened; The fastening pieces of the bus bars of the fuse block are fastened together with the fastening portions of the main bus bars. Power block.

[0013] According to the power supply block having the configuration (4) above, by assembling the fuse block to the main block, the bus bar of the fuse block, which has a fuse connected to its fuse terminal portion, can be connected to the main bus bar of the main block, thereby creating a power supply block with expanded fuse function.

[0014] (5) The main bus bar has a plurality of terminal connection portions connected via fusible portions, and a light-transmitting cover is attached to the main block at a position covering the fusible portions. The power supply block according to (4) above.

[0015] According to the power supply block having the configuration of (5) above, the state of the fusible portion of the main bus bar in the main block can be easily seen through the light-transmitting cover. [Effects of the Invention]

[0016] According to the present invention, it is possible to provide a fuse block with excellent versatility and expandability, and a power supply block including the fuse block.

[0017] The present invention has been briefly described above. The details of the present invention will become clearer by reading the following detailed description of the invention (hereinafter referred to as "embodiments") with reference to the accompanying drawings. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a perspective view of a power supply block in which a fuse block according to a first embodiment is assembled to a main block. [Figure 2] FIG. 2 is an exploded perspective view of the power supply block. [Figure 3] FIG. 3 is an exploded perspective view of the fuse block. [Figure 4] FIG. 4 is a schematic plan view of a main bus bar provided in a main block. [Figure 5] FIG. 5 is a perspective view of a power supply block in which a fuse block according to the second embodiment is assembled to a main block. [Figure 6] FIG. 6 is an exploded perspective view of the power supply block. [Figure 7] FIG. 7 is an exploded perspective view of the fuse block. DETAILED DESCRIPTION OF THE INVENTION

[0019] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0020] (First embodiment) First, the first embodiment will be described. Fig. 1 is a perspective view of a power supply block in which a fuse block according to a first embodiment is assembled to a main block, and Fig. 2 is an exploded perspective view of the power supply block.

[0021] 1 and 2, a fuse block 10 according to the first embodiment is assembled to a main block 30 to form a power supply block 100. The power supply block 100 is mounted on a vehicle such as an automobile and supplies power to and transmits signals to various devices.

[0022] FIG. 3 is an exploded perspective view of the fuse block. As shown in FIG. 3, the fuse block 10 includes a housing 11 and a bus bar 12.

[0023] Housing 11 is molded from insulating synthetic resin and is formed in a box shape. A plurality of insertion holes 13 are formed in the upper part of housing 11. These insertion holes 13 are aligned along the longitudinal direction of housing 11. Fuses 14 are inserted into and accommodated in each of these insertion holes 13. One end of housing 11 is formed with an arm portion 15 extending downward.

[0024] The bus bar 12 is a plate made of a conductive metal material such as copper or a copper alloy. The bus bar 12 is formed by pressing a metal plate. The bus bar 12 has a main body 20, a plurality of fuse terminals 21, and fastening pieces 22.

[0025] The main body 20 is formed in a band shape. The multiple fuse terminal portions 21 are bifurcated tuning fork terminals and are formed on one side of the main body 20. The fastening pieces 22 are formed in a plate shape with fastening holes 22a. The fastening pieces 22 are connected to one end of the main body 20 by connecting portions 24. The fastening pieces 22 are arranged below and near one end of the main body 20 with a gap between them. The connecting portions 24 are bent at approximately right angles to the main body 20 and the fastening pieces 22.

[0026] The main body 20 of the busbar 12 is inserted into the housing 11 from below. As a result, the main body 20 of the busbar 12, which has the fuse terminal 21, is accommodated in the housing 11, and the connecting portion 24 is disposed along the inner surface of the arm 15 of the housing 11. The fuse 14, which is inserted into the insertion hole 13 of the housing 11 and attached, is connected to the fuse terminal 21 formed on the main body 20 of the busbar 12 accommodated in the housing 11.

[0027] As shown in Figures 1 and 2, the main block 30 has an adapter 31 and a block body 32. The adapter 31 is molded from insulating resin and is formed into a plate shape. The adapter 31 has a pair of bolts (fasteners) 33 that protrude in the same direction. Partition walls 34 are formed on both sides of the bolts 33, and the bolts 33 are disposed between the partition walls 34 near the top.

[0028] The block body 32 has a main bus bar 35. A molded portion 36 made of synthetic resin is integrally formed with the main bus bar 35. A light-transmitting cover 37 is attached to the main bus bar 35.

[0029] FIG. 4 is a schematic plan view of a main bus bar provided in a main block. 4, the main bus bar 35 has a main body portion 40, a fastening portion 41, and a terminal connection portion 42. The main bus bar 35 is formed from a plate material made of a conductive metal material such as copper or a copper alloy.

[0030] The main body 40 is composed of two divided main body portions 40a, 40b, which are connected to each other by a fusible portion 40c. The fusible portion 40c melts when a current exceeding the rated current flows, thereby interrupting the electrical connection between the divided main body portions 40a, 40b. Fastening portions 41 are provided on both ends of the main body 40. These fastening portions 41 have fastening holes 41a and extend downward from the main body 40.

[0031] The terminal connection portions 42 are formed in parallel on the lower side portion of the main body portion 40. In this example, the main bus bar 35 has three terminal connection portions 42. A fusible portion 43 is provided between each of the main body portion 40 and the terminal connection portions 42, and the terminal connection portions 42 are connected to the main body portion 40 via the fusible portion 43. These fusible portions 43 melt when a current exceeding the rated value flows, thereby interrupting the electrical connection between the main body portion 40 and the terminal connection portions 42. In addition, a bolt 44 is provided upright on each of the terminal connection portions 42.

[0032] 1 and 2, the molded portion 36 is integrally molded with the main bus bar 35 so as to cover the main bus bar 35 except for the fastening portion 41, the fusible portions 40c and 43, and the bolt 44. The molded portion 36 has accommodating portions 46 partitioned by a partition wall 45, and the bolts 44 erected on the terminal connecting portions 42 are disposed in these accommodating portions 46.

[0033] The light-transmitting cover 37 is attached to the block body 32 so as to cover the exposed portions of the fusible portions 40c, 43 of the main bus bar 35 of the block body 32. This light-transmitting cover 37 is molded from a transparent or translucent synthetic resin. As a result, the fusible portions 40c, 43 of the main bus bar 35 of the block body 32 are visible through the light-transmitting cover 37 while being covered by the transparent or translucent light-transmitting cover 37.

[0034] The block body 32 is attached to the adapter 31 from its front side. This forms the main block 30, which is made up of the adapter 31 and the block body 32. When the block body 32 is attached to the adapter 31, the molded portion 36 of the block body 32 is fitted into the center of the adapter 31, and the fastening portions 41 of the main bus bar 35 are positioned between the pair of partition walls 34. Then, the bolts 33 of the adapter 31 are inserted into the fastening holes 41a formed in these fastening portions 41.

[0035] The fuse block 10 is attached from the front side to a main block 30 made up of an adapter 31 and a block body 32. In this way, a power supply block 100 made up of the main block 30 and the fuse block 10 is constructed.

[0036] To attach the fuse block 10 to the main block 30 in this manner, one of the bolts 33 provided on the adapter 31 of the main block 30 is inserted into the fastening hole 22a of the fastening piece 22 of the fuse block 10 and is then overlapped with the fastening portion 41 provided on the main bus bar 35 of the block body 32. Then, the bolts 33, 44 of the main block 30 are passed through the hole 48a of the terminal 48 connected to the end of the electric wire 47, and a nut (fastener) 49 is screwed on. The terminal 48 is then fastened and connected with the bolts 33, 44 and the nut 49. Then, the fastening piece 22 of the fuse block 10 overlapped with the fastening portion 41 is fastened together with the terminal 48 to the fastening portion 41 of the main bus bar 35 of the main block 30 by the bolt 33 and the nut 49. As a result, the fuse block 10 is assembled to the main block 30 with the bus bars 12 of the fuse block 10 and the main bus bars 35 of the main block 30 electrically connected to the electric wires 47. When the fuse block 10 is assembled to the main block 30, the housing 11 that houses the bus bars 12 is arranged parallel to the main block 30.

[0037] As described above, according to the fuse block 10 of the first embodiment, the fastening pieces 22 of the bus bar 12 are fastened together with the terminals 48 to the fastening portions 41 of the main block 30 using the bolts 33 and nuts 49, whereby the bus bar 12 is connected together with the terminals 48 to the fastening portions 41 of the main block 30 and assembled to the main block 30, thereby easily expanding the functionality. In other words, the fuse block 10 can be made to have excellent versatility and expandability.

[0038] Then, by assembling this fuse block 10 to the main block 30, the bus bar 12 of the fuse block 10, which has a fuse 14 connected to its fuse terminal portion 21, can be connected to the main bus bar 35 of the main block 30, thereby creating a power supply block 100 with expanded fuse functionality.

[0039] Furthermore, when the fuse block 10 is assembled to the main block 30, the housing 11 that accommodates the bus bar 12 is arranged parallel to the main block 30, thereby achieving a compact overall design while ensuring good versatility.

[0040] (Second embodiment) Next, a second embodiment will be described. Fig. 5 is a perspective view of a power supply block in which a fuse block according to the second embodiment is assembled to a main block, and Fig. 6 is an exploded perspective view of the power supply block.

[0041] 5 and 6, a fuse block 60 according to the second embodiment is assembled to a main block 80 to form a power supply block 200. The power supply block 200 is also mounted on a vehicle such as an automobile to supply power to various devices and transmit signals.

[0042] FIG. 7 is an exploded perspective view of the fuse block. As shown in FIG. 7, the fuse block 60 includes a housing 61 and a bus bar 62.

[0043] The housing 61 is molded from insulating synthetic resin and is formed in a box shape. A plurality of insertion holes 63 are formed in the upper part of the housing 61. These insertion holes 63 are arranged along the longitudinal direction of the housing 61. A fuse 64 is inserted and accommodated in each of the insertion holes 63.

[0044] The bus bar 62 is a plate made of a conductive metal material such as copper or a copper alloy. The bus bar 62 is formed by pressing a metal plate. The bus bar 62 has a main body 70, a plurality of fuse terminals 71, and fastening pieces 72.

[0045] The main body 70 is formed in a band shape. The plurality of fuse terminals 71 are bifurcated tuning fork terminals and are formed on one side of the main body 70. The fastening pieces 72 are formed in a plate shape with fastening holes 72a. The fastening pieces 72 are provided on one end side of the main body 70. The fastening pieces 72 extend downward relative to the main body 70.

[0046] The main body 70 of the bus bar 62 is inserted into the housing 61 from below. As a result, the main body 70 of the bus bar 62, which has the fuse terminal portion 71, is accommodated in the housing 61, and the fastening piece 72 protrudes downward from the housing 61.

[0047] Furthermore, terminals 76 connected to the ends of a plurality of electric wires 75 are inserted into the housing 61 from below and accommodated therein.

[0048] In the fuse block 60, a fuse 64 is inserted into an insertion hole 63 of a housing 61 and connected to a fuse terminal portion 71 formed on a main body portion 70 of a bus bar 62 and a terminal 76 of an electric wire 75 housed in the housing 61.

[0049] As shown in FIGS. 5 and 6 , the main block 80 has a housing 81 and a main bus bar 82, and the main bus bar 82 is accommodated in the housing 81. The housing 81 is molded from an insulating resin and has a plurality of mounting holes 83 formed in its upper portion. Fuses 84 are fitted into the mounting holes 83, respectively, and connected to terminal portions (not shown) formed on the main bus bar 82. The main bus bar 82 has fastening portions 85, 86. One of the fastening portions 85 has a fastening hole 85a and is exposed on the side surface of the housing 81. A nut (fastener) (not shown) is disposed on the back side of the fastening portion 85 of the housing 81, and the nut is fixed so that its screw hole is positioned corresponding to the fastening hole 85a of the fastening portion 85. The other fastening portion 86 has a bolt 87 extending upright and exposed on the top surface of the housing 81.

[0050] In this way, the fuse block 60 is attached to the main block 80 from the front side. In this way, the power supply block 200 is formed, which is made up of the main block 80 and the fuse block 60.

[0051] To attach the fuse block 60 to the main block 80, the fastening pieces 72 of the fuse block 60 are placed on the fastening portions 85 of the main block 80, and the fastening holes 72a, 85a are connected to each other. In this state, a bolt (fastener) 92 is passed through the hole 91a of a terminal 91 connected to the end of an electric wire 90, inserted into the connected fastening holes 72a, 85a, and screwed into a nut located on the back side of the fastening portion 85. The terminal 91 is then fastened and connected with the bolt 92 and the nut. Then, the fastening pieces 72 of the fuse block 60 placed on the fastening portions 85 are fastened together with the terminal 91 to the fastening portions 85 of the main bus bar 82 of the main block 80 with the bolt 92 and the nut. As a result, the fuse block 60 is assembled to the main block 80 with the bus bar 62 of the fuse block 60 and the main bus bar 82 of the main block 80 electrically connected to the electric wire 90. When the fuse block 60 is assembled to the main block 80 , the housing 61 accommodating the bus bar 62 extends along the main block 80 in a direction away from the main block 80 .

[0052] As described above, in the case of the fuse block 60 according to the second embodiment, by fastening the fastening pieces 72 of the bus bar 62 together with the terminals 91 to the fastening portions 85 of the main block 80 with bolts 92 and nuts, the bus bar 62 can be connected together with the terminals 91 to the fastening portions 85 of the main block 80 and assembled to the main block 80, thereby easily expanding the functionality. In other words, the fuse block 60 can be made to have excellent versatility and expandability.

[0053] Then, by assembling this fuse block 60 to the main block 80, the bus bar 62 of the fuse block 60, which has a fuse 64 connected to its fuse terminal portion 71, can be connected to the main bus bar 82 of the main block 80, thereby creating a power supply block 200 with expanded fuse functionality.

[0054] Furthermore, when the fuse block 60 is assembled to the main block 80, the housing 61 that accommodates the bus bar 62 extends along the main block 80 in a direction away from the main block 80, thereby ensuring good versatility while minimizing the bulkiness of the external shape.

[0055] The present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. Furthermore, the material, shape, size, number, location, etc. of each component in the above-described embodiments are arbitrary and not limited as long as they can achieve the present invention.

[0056] Here, the features of the fuse block according to the embodiment of the present invention and the power supply block including the fuse block will be briefly summarized and listed below in [1] to [5]. [1] A fuse block (10, 60) assembled to a main block (30, 80) having a fastening portion (41, 85) to which a terminal (48, 91) provided at an end of an electric wire (47, 90) is fastened, a housing (11, 61) in which a plurality of fuses (14, 64) are mounted; a bus bar (12, 62) accommodated in the housing (11, 61); Equipped with The bus bars (12, 62) are a main body portion (20, 70) formed in a strip shape; a plurality of fuse terminals (21, 71) formed on one side of the body (20, 70) and connected to the fuses (14, 64) mounted in the housing (11, 61); a fastening piece (22, 72) fastened together with the terminal (48, 91) to the fastening portion (41, 85) of the main block (30, 80) by a fastener (bolt 33, 92, nut 49) to be electrically connected to the electric wire (47, 90); having Fuse block.

[0057] [2] The housing (11) is arranged parallel to the main block (30) with the fastening pieces (22) of the bus bar (12) fastened together with the fastening portions (41). The fuse block according to [1] above.

[0058] [3] The housing (61) extends along the main block (80) in a direction away from the main block (85) in a state in which the fastening piece (72) of the bus bar (62) is fastened together with the fastening portion (85). The fuse block according to [1] above.

[0059] [4] A power supply block (100, 200) in which the fuse block (10, 60) according to any one of [1] to [3] above is assembled to a main block (30, 80), The main block (30, 80) a main bus bar (35, 82) having a fastening portion (41, 85) to which a terminal (48, 91) provided at an end of an electric wire (47, 90) is fastened; The fastening pieces (22, 72) of the bus bars (12, 62) of the fuse blocks (10, 60) are fastened together with the fastening portions (41, 85) of the main bus bars (35, 82). Power block.

[0060] [5] The main bus bar (35) has a plurality of terminal connection portions (42) connected via fusible portions (43), and a light-transmitting cover (37) is attached to the main block (30) at a position covering the fusible portions (43). The power supply block described in [4] above. [Explanation of symbols]

[0061] 10,60 fuse block 11,61 Housing 12,62 Bus bar 14,64 fuse 20,70 Main body 21,71 Fuse terminal 22,72 Fastening piece 30,80 Main Block 33,92 Bolts (fasteners) 35,82 Main bus bar 37 Translucent cover 41,85 Fastening part 42 Terminal connection 43 Soluble part 47,90 Electric wire 48,91 terminal 49 Nuts (fasteners) 100,200 Power Blocks

Claims

1. A fuse block that is assembled to a main block having a fastening portion to which a terminal provided at an end of an electric wire is fastened, a housing in which a plurality of fuses are mounted; a bus bar accommodated in the housing; Equipped with The bus bar is a main body formed in a strip shape extending in a first direction; a plurality of fuse terminal portions formed on a side edge of the main body on one side in a second direction perpendicular to the first direction so as to be aligned along the first direction, the fuse terminal portions being connected to the fuses attached to the housing; a fastening piece formed on an extending end of an extending portion that extends from an end of one side in the first direction of the main body portion toward the other side in the second direction, the fastening piece being fastened together with the terminal to the fastening portion of the main block by a fastener to be electrically connected to the electric wire; having Fuse block.

2. the housing is disposed parallel to the main block with the fastening pieces of the bus bars fastened together with the fastening portions; 10. The fuse block of claim 1.

3. Each of the housing and the main block has a shape whose longitudinal direction is the first direction, the housing extends along the main block in a direction away from the main block such that, when the fastening pieces of the bus bars are fastened together to the fastening portions located on the other side of the main block in the first direction, an end portion of the housing on one side in the first direction and an end portion of the main block on the other side in the first direction overlap in the first direction, a portion of the housing other than the end portion on one side protrudes from the main block to the other side in the first direction, and a portion of the main block other than the end portion on the other side protrudes from the housing to the one side in the first direction.

10. The fuse block of claim 1.

4. A power supply block in which the fuse block according to any one of claims 1 to 3 is assembled to a main block, The main block comprises: a main bus bar having a fastening portion to which a terminal provided at an end of an electric wire is fastened; the fastening pieces of the bus bars of the fuse block are fastened together with the fastening portions of the main bus bars; Power block.

5. The main bus bar has a plurality of terminal connection portions connected via fusible portions, and a light-transmitting cover is attached to the main block at a position that covers the fusible portions. The power supply block according to claim 4 .

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