Fuse unit

Abstract

To provide a fuse unit that can improve versatility.SOLUTION: In a fuse unit 1 including a battery terminal 9 electrically connected to a battery post 7 of a battery 3, a fusible link 11 electrically connected to the battery terminal 9 and having a fuse that melts when an overcurrent occurs, and a mounting member 13 attached to the battery 3 and on which the fusible link 11 to which the battery terminal 9 is assembled is disposed, the fusible link 11 is disposed relative to the mounting member 13 so as to be movable in a plane parallel to the plane from which the battery post 7 of the battery 3 protrudes.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a fuse unit. [Background technology]

[0002] Conventionally, a fuse unit includes a battery terminal electrically connected to a battery post of a battery, and a fusible link to which the battery terminal is electrically connected and which has a fuse that melts due to an overcurrent. Also known is a fuse unit that includes a protector that is attached to the battery and to which the fusible link to which the battery terminal is assembled is disposed (see Patent Document 1). In this fuse unit, the protector is attached to the battery. The battery terminal and the fusible link are disposed in the protector, and the battery terminal and the fusible link are electrically connected. The battery terminal is electrically connected to the battery post of the battery, and the battery and the fusible link are electrically connected via the battery terminal. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6643889 Summary of the Invention [Problem to be solved by the invention]

[0004] In the fuse unit as disclosed in the above-mentioned Patent Document 1, the fusible link is fixed to the mounting member so as not to move. The fusible link fixed to the mounting member is electrically connected to the battery by electrically connecting the battery terminal to the battery post. Therefore, if the position of the battery post is different, the fuse unit cannot be assembled to the battery, and it is necessary to design a new battery terminal and mounting member, which reduces versatility.

[0005] The present invention has been made in view of the problems inherent in the conventional technology, and an object of the present invention is to provide a fuse unit that can improve versatility. [Means for solving the problem]

[0006] The fuse unit in this embodiment comprises a battery terminal electrically connected to a battery post of a battery, a fusible link to which the battery terminal is electrically connected and having a fuse that melts due to an overcurrent, and a mounting member attached to the battery and on which the fusible link to which the battery terminal is assembled is disposed, and the fusible link is disposed so as to be movable relative to the mounting member in a planar direction parallel to the plane from which the battery post of the battery protrudes. Effect of the Invention

[0007] According to the present invention, it is possible to provide a fuse unit that can improve versatility. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of the fuse unit according to the embodiment. [Diagram 2] FIG. 2 is a top view of the fuse unit according to the embodiment. [Diagram 3] 2 is a perspective view showing a state in which the fuse unit according to the embodiment is being assembled to a battery; FIG. [Figure 4] 4 is a side view showing the state in which the fuse unit according to the embodiment is being assembled to a battery. FIG. [Diagram 5] 2 is a side view of the fuse unit according to the embodiment when assembled to a battery. FIG. [Figure 6] FIG. 2 is an exploded perspective view of the fuse unit according to the embodiment. [Figure 7] 2 is a perspective view of a fusible link of the fuse unit according to the embodiment. FIG. [Figure 8]2 is a top view of a fusible link of the fuse unit according to the embodiment. FIG. [Figure 9] FIG. 2 is a perspective view of a mounting member of the fuse unit according to the embodiment. [Figure 10] 4 is a top view of the mounting member of the fuse unit according to the embodiment. FIG. [Figure 11] 11 is a top view of the fuse unit according to the embodiment when the fusible link is moved to the upper left in the planar direction relative to the mounting member. FIG. [Figure 12] 11 is a top view of the fuse unit according to the embodiment when the fusible link is moved to the upper right in the planar direction relative to the mounting member. FIG. [Figure 13] 11 is a top view of the fuse unit according to the embodiment when the fusible link is moved downward and leftward in the planar direction relative to the mounting member. FIG. [Figure 14] 11 is a top view of the fuse unit according to the embodiment when the fusible link is moved downward and to the right in the planar direction relative to the mounting member. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The fuse unit according to the present embodiment will be described in detail below with reference to the drawings. Note that the dimensional ratios in the drawings are exaggerated for the convenience of explanation and may differ from the actual ratios.

[0010] 1, a fuse unit 1 according to this embodiment is applied to, for example, a battery 3 mounted on a vehicle. The fuse unit 1 is disposed between the battery 3 and an electric component (not shown) mounted on the vehicle, and when an overcurrent flows, the fuse unit 1 cuts off the supply of power from the battery 3 to the electric component to protect the electric component.

[0011] 1 to 5, the battery 3 is formed in a rectangular parallelepiped shape, and a recess 5 is provided at a corner of the upper surface by being cut out so as to be one step lower than the upper surface. A battery post 7 is provided in the recess 5 of the battery 3, protruding upward from the bottom surface. The fuse unit 1 is electrically connected to the battery post 7.

[0012] As shown in FIGS. 1 to 10, the fuse unit 1 includes a battery terminal 9, a fusible link 11, and an attachment member 13. The fuse unit 1 includes a battery terminal 9, a fusible link 11, and an attachment member 13.

[0013] As shown in FIGS. 1 to 3 and 6, the battery terminal 9 is made of a conductive material, and includes a link connection portion 15 and a battery connection portion 17. As shown in FIG.

[0014] The link connection portion 15 is composed of a stud bolt protruding upward from one end side of the battery terminal 9. The link connection portion 15 is electrically connected to the fusible link 11, and electrically connects the battery terminal 9 to the fusible link 11.

[0015] The battery connection portion 17 has a hole through which the battery post 7 can be inserted, and the diameter of the hole is reduced by tightening a bolt inserted into an end portion. The battery connection portion 17 is electrically connected to the battery post 7 by tightening the bolt with the battery post 7 inserted into the hole. By electrically connecting the battery connection portion 17 to the battery post 7, the fusible link 11 is electrically connected to the battery 3 via the battery terminal 9.

[0016] 1 to 3 and 6 to 8, the fusible link 11 is formed into a rectangular shape by molding a fuse element made of a conductive material with a fuse (not shown) that melts when an overcurrent occurs, using synthetic resin. The portion of the fusible link 11 where the fuse is located is provided with an opening through which the state of the fuse can be confirmed, and the opening is closed by a cover 19. The fusible link 11 includes a terminal connection portion 21 and a component connection portion 23.

[0017] The terminal connection portion 21 is provided on one side in the longitudinal direction of the fusible link 11. The terminal connection portion 21 is a hole that penetrates the fuse element exposed from the synthetic resin. The link connection portion 15 of the battery terminal 9 is inserted into the terminal connection portion 21, and the fusible link 11 and the battery terminal 9 are electrically connected by fastening a nut to the link connection portion 15.

[0018] A plurality of (here, five) component connection portions 23 are provided in the center of the fusible link 11 in the longitudinal direction, and a plurality of (here, three) component connection portions 23 are provided on the other longitudinal side of the fusible link 11. Insulation is maintained between the plurality of component connection portions 23 by partition walls made of synthetic resin. The component connection portions 23 are formed of stud bolts protruding upward from the surface of the fuse element exposed from the synthetic resin. For example, a terminal provided at an end of an electric wire electrically connected to an electric component is inserted into the component connection portions 23, and the component connection portions 23 are electrically connected to the electric component by fastening a nut. By electrically connecting the electric component to the component connection portions 23, the battery 3 and the electric component are electrically connected via the fusible link 11.

[0019] The fusible link 11 supplies power from the battery 3 to each of the electrical components. If an overcurrent is input to the fuse element, the fuse melts to cut off the power supply between the battery 3 and the electrical components, thereby protecting the electrical components. The fusible link 11 to which the battery terminal 9 is attached is disposed on a mounting member 13.

[0020] As shown in Figs. 1 to 6, 9 and 10, the mounting member 13 is made of an insulating material such as synthetic resin, and is formed into a rectangular housing capable of accommodating the fusible link 11. The upper surface side of the mounting member 13 is opened so as to be able to accommodate the battery terminal 9 and the fusible link 11. The opening on the upper surface side of the mounting member 13 is closed by a cover (not shown). The mounting member 13 is provided with a plurality of cover locking portions (not shown) for maintaining the assembled state of the cover. The lower surface side of the mounting member 13 is provided with a plurality of battery locking portions 29 which are engaged with the locked portions 27 provided on the battery 3. By engaging the battery locking portions 29 with the locked portions 27, the mounting member 13 does not move relative to the battery 3, and the assembled state of the mounting member 13 relative to the battery 3 can be maintained. The mounting member 13 includes a link arrangement portion 31, a terminal arrangement portion 33, and a restricting portion 35.

[0021] The link arrangement portion 31 is disposed adjacent to the terminal arrangement portion 33 and is provided at a position above the terminal arrangement portion 33. The component connection portion 23 of the fusible link 11 is disposed in the link arrangement portion 31. The component connection portion 23 of the fusible link 11 disposed in the link arrangement portion 31 is movable in the link arrangement portion 31 in a plane direction parallel to the plane from which the battery post 7 of the battery 3 protrudes.

[0022] The terminal arrangement section 33 is disposed adjacent to the link arrangement section 31 and is provided at a position lower than the link arrangement section 31. The terminal connection section 21 of the fusible link 11 and the battery terminal 9 assembled to the terminal connection section 21 are disposed in the terminal arrangement section 33. The terminal connection section 21 of the fusible link 11 and the battery terminal 9 disposed in the terminal arrangement section 33 are movable in a plane direction parallel to the plane in which the battery post 7 of the battery 3 is projected in the terminal arrangement section 33. A hole section 37 through which the battery post 7 of the battery 3 is inserted is provided on the bottom surface of the terminal arrangement section 33. The size of the hole section 37 is set to be larger than the outer diameter of the battery post 7 so that the battery post 7 can be inserted even if the position of the battery post 7 is different. The battery post 7 is disposed in the terminal arrangement section 33 by inserting it through the hole section 37 with the mounting member 13 attached to the battery 3. The battery connection section 17 of the battery terminal 9 is electrically connected to the battery post 7 disposed in the terminal arrangement section 33.

[0023] The restricting portions 35 are provided at a plurality of locations (four locations in this embodiment) on the peripheral wall that defines the outer edge of the mounting member 13. The restricting portions 35 are provided at positions facing at least all of the four side surfaces of the rectangular fusible link 11. When the fusible link 11 moves in a planar direction in the mounting member 13, the restricting portions 35 come into contact with the side surfaces of the fusible link 11. The contact between the restricting portions 35 and the fusible link 11 prevents the fusible link 11 from moving any further in the planar direction, and the movement of the fusible link 11 can be restricted. Therefore, the movement of the battery terminal 9 relative to the battery post 7 can be restricted, and the reliability of the electrical connection between the battery 3 and the battery terminal 9 can be maintained.

[0024] The fusible link 11 to which the battery terminal 9 arranged on the mounting member 13 is assembled is movable in a plane direction parallel to the plane from which the battery post 7 of the battery 3 protrudes. If the position of the battery post 7 varies, the battery terminal 9 can be electrically connected to the battery post 7 by moving the fusible link 11 relative to the mounting member 13. This eliminates the need to newly design the battery terminal 9 and mounting member 13, and allows the same fuse unit 1 to be attached to a plurality of batteries 3 having battery posts 7 in different positions, improving versatility.

[0025] 11, when the position of the battery post 7 relative to the battery 3 is at the upper left, the fusible link 11 is moved so as to be located at the upper left in the planar direction relative to the mounting member 13. At this time, the side surface of the fusible link 11 abuts against the restricting portion 35 located on the left side of the mounting member 13 and the restricting portion 35 located on the upper side, and further movement of the fusible link 11 is restricted.

[0026] 12, when the position of the battery post 7 relative to the battery 3 is at the upper right, the fusible link 11 is moved to the upper right in the planar direction relative to the mounting member 13. At this time, the side surface of the fusible link 11 abuts against the restricting portion 35 located on the right side of the mounting member 13 and the restricting portion 35 located above, and further movement of the fusible link 11 is restricted.

[0027] 13, when the position of the battery post 7 relative to the battery 3 is at the lower left, the fusible link 11 is moved to the lower left in the planar direction relative to the mounting member 13. At this time, the side surface of the fusible link 11 abuts against the restricting portion 35 located on the left side of the mounting member 13 and the restricting portion 35 located below, and further movement of the fusible link 11 is restricted.

[0028] 14, when the position of the battery post 7 relative to the battery 3 is at the lower right, the fusible link 11 is moved so as to be located at the lower right in the planar direction relative to the mounting member 13. At this time, the side surface of the fusible link 11 abuts against the restricting portion 35 located on the right side of the mounting member 13 and the restricting portion 35 located below, and further movement of the fusible link 11 is restricted.

[0029] Such a fuse unit 1 includes a battery terminal 9 electrically connected to the battery post 7 of the battery 3, and a fusible link 11 electrically connected to the battery terminal 9 and having a fuse that melts when an overcurrent occurs. Also includes an attachment member 13 attached to the battery 3 and on which the fusible link 11 to which the battery terminal 9 is attached is disposed. The fusible link 11 is disposed relative to the attachment member 13 so as to be movable in a plane parallel to the plane from which the battery post 7 of the battery 3 protrudes.

[0030] When the position of the battery post 7 is different, the battery terminal 9 can be electrically connected to the battery post 7 by moving the fusible link 11 relative to the mounting member 13. Therefore, there is no need to design a new battery terminal 9 and mounting member 13, and the same fuse unit 1 can be attached to multiple batteries 3 with different positions of the battery post 7, improving versatility.

[0031] Therefore, with such a fuse unit 1, versatility can be improved.

[0032] The mounting member 13 is also provided with a restricting portion 35 that can come into contact with the fusible link 11 when the fusible link 11 moves.

[0033] Therefore, movement of the battery terminal 9 relative to the battery post 7 can be restricted, and the reliability of the electrical connection between the battery 3 and the battery terminal 9 can be maintained.

[0034] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment.

[0035] For example, the mounting member may be provided with a locking portion that prevents the fusible link from lifting up from the mounting member. This locking portion may have, for example, a protrusion that faces the upper surface of the fusible link, and the protruding length of the protrusion may be set so that it always faces the upper surface of the fusible link within the movement range of the fusible link. [Explanation of symbols]

[0036] 1 Fuse unit 3 Battery 7 Battery Post 9 Battery Terminals 11 Fusible Link 13 Mounting material 35 Regulatory Department

Claims

1. a battery terminal electrically connected to a battery post of the battery; a fusible link electrically connected to the battery terminal and having a fuse that melts when an overcurrent occurs; a mounting member attached to the battery and on which the fusible link to which the battery terminal is assembled is disposed; Equipped with The fusible link is a fuse unit arranged to be movable relative to the mounting member in a planar direction parallel to a plane from which the battery post of the battery protrudes.

2. 2. The fuse unit according to claim 1, wherein the mounting member is provided with a restricting portion that can come into contact with the fusible link when the fusible link moves.

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