Fuse module and fuse system

Abstract

To provide a technology that enables a worker to replace a fuse without touching the fuse.SOLUTION: A fuse module 20 includes a detachable member 21 and a fuse 22, the detachable member 21 being detachably attached to a housing 11 of an electrical junction box 10 while closing an opening 14A of the housing 11, the fuse 22 being fixed to a site on the inner side of the housing 11 of the detachable member 21 attached to the housing 11.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to fuse modules and fuse systems. [Background technology]

[0002] Patent Documents 1 and 2 disclose techniques for replacing a fuse in an electrical junction box. The fuse is attached to and detached from the electrical junction box by attaching and detaching bolts at both ends. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-175681 [Patent Document 2] Japanese Patent Application Publication No. 2019-4639 Summary of the Invention [Problem to be solved by the invention]

[0004] In both of the configurations of Patent Document 1 and Patent Document 2, a worker must touch the fuse when replacing it.

[0005] The present disclosure aims to provide a technique that allows a worker to replace a fuse without touching the fuse. [Means for solving the problem]

[0006] The fuse module of the present disclosure comprises: a detachable member that is detachably attached to the housing of the electrical junction box while closing an opening of the housing; and a fuse fixed to a portion of the detachable member attached to the housing on the inside of the housing.

[0007] The fuse system of the present disclosure comprises: a fuse module of the present disclosure; a harness provided inside the housing; a reel around which the wiring portion of the harness is wound, the detachable member has a connector portion having a pair of terminals electrically connected to both sides of the fuse, The connector portion is connected to the harness. [Effects of the Invention]

[0008] According to the technology of the present disclosure, a worker can replace a fuse without touching the fuse. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of an electrical junction box including a fuse module according to a first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the electrical junction box of the first embodiment. [Figure 3] FIG. 3 is a perspective view of the fuse module. [Figure 4] FIG. 4 is an exploded perspective view of the fuse module. [Figure 5] FIG. 5 is a cross-sectional view of the electrical junction box in a state where the fuse module is fixed to the housing. [Figure 6] FIG. 6 is a cross-sectional view of the electrical junction box with the fuse module removed from the housing. [Figure 7] FIG. 7 is a cross-sectional view taken along line AA in FIG. [Figure 8] FIG. 8 is a perspective view of an electrical junction box including a fuse module according to the second embodiment. [Figure 9] FIG. 9 is a perspective view of an electrical junction box including a fuse module according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0011] [1] A detachable member that is detachably attached to a housing of an electric junction box while closing an opening of the housing; a fuse fixed to an inner portion of the detachable member attached to the casing. Fuse module.

[0012] With this configuration, the worker can replace the detachable member and the fuse fixed to the detachable member together by removing the detachable member. In other words, with this configuration, the worker can replace the fuse without touching the fuse.

[0013] [2] The detachable member has a connector portion having a pair of terminals electrically connected to both sides of the fuse, The connector portion is connected to a harness provided inside the housing when the detachable member is attached to the housing, and is arranged so that the angle formed between a direction perpendicular to the attachment direction in which the detachable member is attached to the housing and the direction in which the connection port faces is within 30°. The fuse module according to [1].

[0014] After removing the detachable member from the housing, the worker needs to remove the harness from the connector. However, when the connection port faces toward the housing, it is difficult for the worker to remove the harness from the connector. Conversely, when the connection port faces away from the housing, the harness is folded back toward the inside of the housing, causing the harness to bend. According to the above configuration, the connector is positioned so that the angle between the direction perpendicular to the mounting direction and the direction in which the connection port faces is within 30°. Therefore, when the detachable member is removed from the housing and pulled out in the direction opposite to the mounting direction, the worker can easily remove the harness and bending of the harness is suppressed.

[0015] [3] The detachable member is a cover attached to the housing in a state of closing the opening; a fuse mounting portion to which the fuse is fixed, The cover and the fuse mounting portion are separate components. The fuse module according to [1] or [2].

[0016] With this configuration, the worker can reuse the lid when replacing the fuse.

[0017] [4] The housing has a storage section having a main opening having an opening area larger than that of the opening, and a cover section covering the main opening, The detachable member is attached to the opening provided in the cover portion. The fuse module according to any one of [1] to [3].

[0018] With this configuration, an operator can replace the fuse without removing the cover.

[0019] [5] The housing has a storage section and a cover section, The storage section has the opening and a main opening having an opening area larger than that of the opening, The cover portion is attached to the main opening, The detachable member is attached to the opening provided at a position separate from the main opening. The fuse module according to any one of [1] to [3].

[0020] With this configuration, an operator can replace the fuse without removing the cover.

[0021] [6] The fuse is detachably fixed to the detachable member. [1] to [5]. The fuse module according to any one of [1] to [5].

[0022] With this configuration, the worker can replace only the fuse and reuse the detachable member.

[0023] [7] A fuse module according to any one of [1] to [6], a harness provided inside the housing; a reel around which the wiring portion of the harness is wound, the detachable member has a connector portion having a pair of terminals electrically connected to both sides of the fuse, The connector portion is connected to the harness. Fuse system.

[0024] According to this configuration, since the wiring portion is wound around the reel, even if the wiring portion is pulled by the pull-out portion when the pull-out portion is pulled out, the wiring portion is unlikely to get caught on electronic components or the like inside the housing.

[0025] [Details of the embodiments of the present disclosure] 1. First embodiment 1-1. Configuration of the electrical junction box 10 An electric junction box 10 including a fuse module 20 of the first embodiment is a device that electrically connects a first device 91 and a second device 92, as shown in FIG.

[0026] The electrical junction box 10 shown in Figures 1 and 2 includes a housing 11 and an electronic component 12. The housing 11 is box-shaped. The housing 11 is made of, for example, metal. The housing 11 has a storage section 13 and a cover section 14. The storage section 13 has a main opening 13A and is container-shaped. The cover section 14 is attached to the main opening 13A so as to cover the main opening 13A. The cover section 14 has an opening 14A. The opening 14A is provided in the upper wall section 11A of the housing 11. The opening area of ​​the opening 14A is smaller than the opening area of ​​the main opening 13A.

[0027] The electronic component 12 is disposed inside the housing 11. The electronic component 12 is, for example, a relay or a sensor.

[0028] 3 and 4 includes a detachable member 21, a fuse 22, and conductive portions 24 and 25. The detachable member 21 is detachably attached to the housing 11 while closing the opening 14A of the housing 11. The detachable member 21 is fixed to the housing 11 using a bolt 40. When the bolt 40 is removed, the detachable member 21 can be removed from the housing 11 (see FIGS. 5 and 6). The detachable member 21 can be pulled out upward.

[0029] The detachable member 21 has a lid portion 30, a fuse attachment portion 31, and a connector portion 32. The lid portion 30 closes the opening 14A of the housing 11. The lid portion 30 is made of, for example, metal.

[0030] The fuse 22 is detachably attached to the fuse attachment portion 31. The fuse attachment portion 31 has a base portion 31A to which the fuse 22 is attached and a peripheral wall portion 31B that surrounds the fuse 22 attached to the base portion 31A. The fuse 22 is attached to one side of the base portion 31A in a predetermined direction perpendicular to the attachment direction in which the detachable member 21 is attached to the housing 11. The attachment direction is a direction parallel to the outer surface of the wall portion (specifically, the upper wall portion 11A) in which the opening 14A is provided. The peripheral wall portion 31B has a cylindrical shape that protrudes from the outer periphery of the base portion 31A to one side in the predetermined direction. One end of the peripheral wall portion 31B in the predetermined direction is open. The fuse 22 is removed through this opening. The fuse attachment portion 31 is made of, for example, resin. The fuse attachment portion 31 is configured as a separate body from the lid portion 30. The fuse mounting portion 31 is detachably attached to the cover portion 30 using a bolt 41 .

[0031] When the detachable member 21 is fixed to the housing 11, the fuse 22 is fixed to a portion of the detachable member 21 inside the housing 11 and is disposed inside the housing 11. Specifically, the fuse 22 is detachably attached to the base portion 31A of the fuse mounting portion 31. The fuse 22 has a fuse main body 22A and extension portions 22B and 22C extending from both sides of the fuse main body 22A. The extension portions 22B and 22C are fixed to the fuse mounting portion 31 using bolts 42. The extension portion 22B is fastened together with the conductive portion 24 by the bolt 42. The extension portion 22B is fastened together with the conductive portion 25 by the bolt 42. The fuse 22 is attached and detached by attaching and detaching the extension portions 22B and 22C. The fuse mounting portion 31, the connector portion 32, and the fuse 22 are entirely covered by the lid portion 30. The fuse mounting portion 31 , the connector portion 32 and the fuse 22 are disposed directly below the lid portion 30 .

[0032] As shown in FIG. 7, the connector portion 32 is provided on the other side of the fuse mounting portion 31 in the predetermined direction. The connector portion 32 includes a pair of terminals 32A, 32B and a connector housing 32C that accommodates the pair of terminals 32A, 32B. The pair of terminals 32A, 32B are electrically connected to both sides of the fuse 22. The pair of terminals 32A, 32B are arranged to extend along the predetermined direction. The terminal 32A is electrically connected to the extension portion 22B via a conductive portion 24. The terminal 32B is electrically connected to the extension portion 22C via a conductive portion 25. The connector housing 32C has a cylindrical shape that protrudes from the base portion 31A of the fuse mounting portion 31 toward the other side of the predetermined direction. The connection port 32X of the connector portion 32 faces the other side of the predetermined direction. That is, the connector portion 32 is arranged so that the connection port 32X faces the above-mentioned predetermined direction perpendicular to the mounting direction in which the detachable member 21 is mounted to the housing 11.

[0033] As shown in FIGS. 5 and 6, the electrical junction box 10 includes a harness 50 electrically connected to the connector portion 32. The harness 50, together with the fuse module 20, constitutes a fuse system 70. The harness 50 is provided inside the housing 11. The harness 50 has a wiring portion 51 and a mating connector portion 52 provided at an end of the wiring portion 51. As shown in FIG. 7, the mating connector portion 52 includes a pair of mating terminals 52A, 52B and a mating connector housing 52C. When the mating connector housing 52C is fitted into the connector housing 32C, the pair of mating terminals 52A, 52B are electrically connected to the pair of terminals 32A, 32B. As shown in FIGS. 5 and 6, the mating connector housing 52C includes a locking portion 52D and a release operation portion 52E. The locking portion 52D locks with the connector portion 32 when the mating connector housing 52C is fitted into the connector housing 32C. The connector portion 32 includes a lock-receiving portion 32D that locks with the locking portion 52D. The release operation portion 52E is disposed on the housing 11 side of the mating connector portion 52 when the fuse module 20 is pulled out in the direction opposite to the installation direction. In this state, the release operation portion 52E is pressed in the direction opposite to the housing 11 side, thereby releasing the locking state between the locking portion 52D and the lock-receiving portion 32D.

[0034] The opening 14A includes an extension 14B that projects outward to increase the opening area. The connector 32 passes through the opening expanded by the extension 14B.

[0035] 1-2. Functions and Effects of Fuse Module 20 The fuse module 20 is detachably attached to the housing 11 using bolts 40. When the fuse module is fixed to the housing 11, the fuse 22 is disposed inside the housing 11.

[0036] By removing the bolt 40, the detachable member 21 of the fuse module 20 can be removed from the housing 11. When the detachable member 21 is removed from the housing 11, the harness 50 connected to the connector portion 32 is also pulled out to the outside of the housing 11. As described above, the connection port 32X of the connector portion 32 faces in a direction perpendicular to the mounting direction. Therefore, when the detachable member 21 is pulled out in the direction opposite to the mounting direction, the connection port 32X of the connector portion 32 remains facing in a direction perpendicular to the mounting direction. This makes it easy for the worker to remove the harness 50 from the connector portion 32. Furthermore, bending of the harness 50 is suppressed compared to when the connection port 32X forms an obtuse angle with respect to the mounting direction.

[0037] When removing the harness 50, the release operation portion 52E is pressed to release the locking state between the locking portion 52D and the lock receiving portion 32D, and the mating connector portion 52 is removed from the connector portion 32. This allows the harness 50 to be removed from the fuse module 20.

[0038] After the fuse module 20 is removed, a new fuse module 20 is connected to the harness 50 and fixed to the housing 11. As described above, the fuse 22 is detachable from the fuse mounting portion 31. The fuse mounting portion 31 is also detachable from the lid portion 30. Therefore, it is possible to replace only the fuse 22 and reuse the lid portion 30 and the fuse mounting portion 31. Alternatively, it is possible to replace only the fuse 22 and the fuse mounting portion 31 and reuse the lid portion 30.

[0039] As described above, by removing the detachable member 21, the worker can replace the detachable member 21 and the fuse 22 fixed to the detachable member 21 together. In other words, according to the fuse module 20, the worker can replace the fuse 22 without touching the fuse 22.

[0040] Furthermore, since the worker can replace the fuse 22 by removing the detachable member 21, the fuse 22 can be replaced without removing the cover portion 14.

[0041] 2. Second embodiment In the second embodiment, a configuration will be described in which a wiring portion 51 of a harness 50 is wound around a reel 60. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0042] 8, the electrical junction box 210 of the second embodiment includes a reel 60 and a cylindrical body 61. The electrical junction box 210 of the second embodiment is common to the electrical junction box 10 of the first embodiment in other respects. The reel 60 and the cylindrical body 61, together with the fuse module 20 and the harness 50, constitute a fuse system 270.

[0043] The wiring portion 51 of the harness 50 is wound around the reel 60 inside the cylindrical body 61. That is, when the detachable member 21 is fixed to the housing 11, the wiring portion 51 is wound around the reel 60, and when the detachable member 21 is removed from the housing 11, the wiring portion 51 is pulled out from the reel 60. With this configuration, even if the wiring portion 51 is pulled by the detachable member 21 when the detachable member 21 is pulled out, the wiring portion 51 is unlikely to get caught on the electronic components 12 (see FIG. 2 ) inside the housing 11.

[0044] 3. Third embodiment In the third embodiment, a configuration will be described in which the opening is provided in the housing portion rather than the cover portion. Note that in the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0045] 9, the electrical junction box 310 of the third embodiment includes a housing 311 instead of the housing 11 described in the first embodiment. The electrical junction box 310 of the third embodiment is common to the electrical junction box 10 of the first embodiment in other respects.

[0046] The housing 311 is box-shaped. The housing 311 is made of, for example, metal. The housing 311 has a storage section 313 and a cover section 314. The storage section 313 has a main opening 313A and an opening 313B and is container-shaped. The opening area of ​​the opening 313B is smaller than the opening area of ​​the main opening 313A. The cover section 314 is attached to the main opening 313A in a state where it covers the main opening 313A. The fuse module 20 is attached to the opening 313B.

[0047] In the electrical junction box 310 of the third embodiment, the worker can also replace the fuse 22 without removing the cover portion 314.

[0048] <Other embodiments> The present disclosure is not limited to the embodiments described above and in the drawings. For example, any combination of features of the above-described or following embodiments is possible within a range that does not contradict. Furthermore, any feature of the above-described or following embodiments may be omitted unless explicitly stated as essential. Furthermore, the above-described embodiment may be modified as follows.

[0049] (1) The cover and the fuse mounting portion may be integrated.

[0050] (2) In the above embodiments, the connector portion is configured so that the connection port faces a direction perpendicular to the mounting direction of the detachable member when the detachable member is attached to the housing. However, this is not a limitation. For example, the connector portion may be configured so that the angle between the direction perpendicular to the mounting direction and the direction in which the connection port faces is within 30°, or so that the angle between the direction perpendicular to the mounting direction and the direction in which the connection port faces is greater than 30°.

[0051] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is not limited to the embodiments disclosed herein, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0052] 10...Electrical junction box 11...Housing 11A…Top wall part 12...Electronic components 13...Storage section 13A...Main opening 14...Cover part 14A…Opening 14B...extension 20...Fuse module 21...Detachable member 22...Fuse 22A...Fuse body 22B…Extension part 22C…Extension part 24...Conductive part 25...Conductive part 30…Lid part 31...Fuse mounting section 31A...Base part 31B…Peripheral wall part 32...Connector part 32A...Terminal 32B…Terminal 32C...Connector housing 32D…Lock receiving part 32X...Connection port 40...volts 41...Bolt 42...Volts 50...Harness 51...Wiring section 52...Mating connector part 52A...Mating terminal 52B...Mating terminal 52C...Mating connector housing 52D...Latching part 52E…Release operation part 60...reel 61...Cylinder 70...Fuse system 91…First device 92…Second device 210...Electrical junction box 270...Fuse system 310...Electrical junction box 311…Housing 313…Storage section 313A...Main opening 313B…Opening 314...Cover part

Claims

1. a detachable member that is detachably attached to the housing of the electrical junction box while closing an opening of the housing; a fuse fixed to an inner portion of the detachable member attached to the casing. Fuse module.

2. the detachable member has a connector portion having a pair of terminals electrically connected to both sides of the fuse, The connector portion is connected to a harness provided inside the housing when the detachable member is attached to the housing, and is arranged so that an angle formed between a direction perpendicular to an attachment direction in which the detachable member is attached to the housing and a direction in which the connection port faces is within 30°. The fuse module of claim 1 .

3. The detachable member is a cover attached to the housing in a state of closing the opening; a fuse mounting portion to which the fuse is fixed, The cover and the fuse mounting portion are separate components. The fuse module according to claim 1 or 2.

4. the housing includes a storage section having a main opening having an opening area larger than that of the opening section, and a cover section that covers the main opening, The detachable member is attached to the opening provided in the cover portion. The fuse module according to claim 1 or 2.

5. The housing has a housing portion and a cover portion, The storage section has the opening and a main opening having an opening area larger than that of the opening, The cover portion is attached to the main opening, The detachable member is attached to the opening provided at a position separate from the main opening. The fuse module according to claim 1 or 2.

6. The fuse is detachably fixed to the detachable member. The fuse module according to claim 1 or 2.

7. The fuse module according to claim 1 or 2; a harness provided inside the housing; a reel around which the wiring portion of the harness is wound, the detachable member has a connector portion having a pair of terminals electrically connected to both sides of the fuse, The connector portion is connected to the harness. Fuse system.

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