Fuse device

Abstract

To provide a fuse device which can reduce its footprint.SOLUTION: A fuse device 1 comprises: two connection terminal parts 2 which are provided to be spaced apart from each other; and a fusible part 3 which is provided between the two connection terminal parts 2. The connection terminal parts 2 each have: a connection part 21 which is electrically connected to the outside; and a bent part 22 which is formed by bending it with respect to the connection part 21, with a separating direction X between the connection terminal parts 2 as a folding line. The fusible part 3 is provided between the bent parts 22 of the two connection terminal parts 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Conventionally, a known fuse device has a fusible element provided between a terminal portion and a busbar portion, as described in Patent Document 1. This fuse device connects the fusible element to the terminal portion and the busbar portion with a curved linear member, thereby reducing stress concentration on the fusible element. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-088235 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned fuse device has room for improvement in terms of the large installation area. For example, the wire member connected to the fusible element of this fuse device has a large area, which requires a large installation area for the fuse device. This raises concerns that the size of the equipment equipped with the fuse device will increase.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a fuse device that can reduce the installation area. [Means for solving the problem]

[0006] That is, the fuse device of the present invention comprises two connection terminal portions spaced apart from each other and a fusible portion provided between the two connection terminal portions, the connection terminal portions having a connection portion electrically connected to the outside and a bent portion formed by bending the connection portion with the separation direction of the connection terminal portions as a bending line, and the fusible portion is configured to be provided between the bent portions of the two connection terminal portions. [Effects of the Invention]

[0007] According to the fuse device of the present invention, the installation area can be reduced. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a fuse device according to a first embodiment. [Figure 2] FIG. 2 is a perspective view showing a fuse device according to the second embodiment. [Figure 3] FIG. 3 is a cross-sectional view of the fuse device taken along line III-III in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to these embodiments. Furthermore, the components in the following embodiments include those that are easily replaceable by those skilled in the art, or those that are substantially the same.

[0010] [First embodiment] This embodiment relates to a fuse device. In the following description, of the first, second, and third directions that intersect with one another, the first direction is referred to as the "separation direction X," the second direction is referred to as the "depth direction Y," and the third direction is referred to as the "height direction Z." Here, the separation direction X, the depth direction Y, and the height direction Z are mutually perpendicular. The separation direction X corresponds to the direction in which two connection terminal portions are separated. The depth direction Y and the height direction Z intersect with the separation direction X. Furthermore, unless otherwise specified, each direction used in the following description represents the direction in which each portion is assembled to each other. Note that the term "orthogonal" as used here includes "approximately orthogonal."

[0011] 1, the fuse device 1 according to the first embodiment is a device that protects circuit components against overcurrent and cuts off the current when a current exceeding a predetermined level flows. The fuse device 1 includes a connection terminal 2 and a fusible portion 3.

[0012] The connection terminal portion 2 functions as a terminal that electrically connects the fuse device 1 to the outside, and also functions as a support that is connected to the fusible portion 3 and supports the fusible portion 3. Two connection terminal portions 2 are provided spaced apart in the spacing direction X. The connection terminal portion 2 is made of a conductive metal and is formed by bending a plate body. The connection terminal portion 2 has a connection portion 21 and a bending portion 22.

[0013] The connection portion 21 is a portion that functions as a terminal that is electrically connected to the outside of the fuse device 1, and is formed, for example, as a rectangular plate. The connection portion 21 has a connection hole 211 formed therein for fastening to a connection object such as an external component. The connection hole 211 is formed so as to penetrate the front and back of the connection portion 21. The connection portions 21 are arranged spaced apart in the spacing direction X, and are arranged so as to be placed on the installation surface of the connection object.

[0014] The bent portion 22 is formed continuous with the connecting portion 21 and is bent relative to the connecting portion 21 with the separation direction X as a bending line. For example, the connecting portion 21 is provided parallel to the installation surface of the fuse device 1, while the bent portion 22 is provided in a direction intersecting the installation surface. In FIG. 1, the angle formed between the connecting portion 21 and the bent portion 22 is a right angle, but the angle may be other than a right angle. The bent portion 22 is formed in a plate shape and extends upward from the position where it is connected to the connecting portion 21. Therefore, even if the bent portion 22 is formed large, the installation area of ​​the fuse device 1 does not become large.

[0015] The fusible portion 3 melts when a current greater than a predetermined value flows through the fuse device 1, thereby interrupting a circuit including the fuse device 1. The fusible portion 3 is made of, for example, a metal that melts when a current greater than a predetermined value flows through it. The fusible portion 3 is disposed between the bent portions 22 of the two connection terminals 2, for example, in a plane including the bent portions 22. That is, the fusible portion 3 is disposed in a plane that bends and expands in the height direction Z relative to the connection portion 21. This allows the connection terminals 2 and the connection portion 21 to be positioned close to each other. For example, if the fusible portion 3 is disposed between the two connection terminals 2 and the connection terminals 2, fusible portion 3, and connection terminals 2 are linearly arranged, the two connection terminals 2 cannot be positioned close to each other. In contrast, in the fuse device 1 according to this embodiment, the connection terminals 2 are bent and the fusible portion 3 is disposed in the bent direction relative to the connection portion 21, allowing the two connection portions 21 and the connection terminals 2 to be positioned close to each other, thereby reducing the installation area of ​​the fuse device 1.

[0016] The fusible portion 3 is disposed between the two bent portions 22. The fusible portion 3 is formed thinner than the bent portions 22 and is bent in a crank shape. In other words, the fusible portion 3 extends from one bent portion 22 in the separation direction X, bends in the height direction Z, and then bends again in the separation direction X to connect to the other bent portion 22. The fusible portion 3 may be configured as a linear member, or may be configured by providing a fusible element in part of a bent linear plate.

[0017] The bent portion 22 and the soluble portion 3 are provided, for example, covered by a protective member 4. The protective member 4 is formed of a resin or the like, and covers the periphery of the bent portion 22 and the soluble portion 3 to seal the bent portion 22 and the soluble portion 3.

[0018] The fuse device 1 is provided with a wall portion 5. The wall portion 5 is formed between the two connection terminal portions 2 and is provided so as to separate the two connection terminal portions 2. For example, the wall portion 5 is provided upright in the height direction Z between the connection portions 21. The wall portion 5 is provided, for example, on a member or part such as a housing or enclosure in which the fuse device 1 is installed. The wall portion 5 is made of an insulating member and is configured as, for example, a resin plate.

[0019] Next, the installation of the fuse device 1 according to this embodiment will be described.

[0020] In FIG. 1, a fuse device 1 is installed inside a device or unit mounted on a vehicle, and is used by being installed on, for example, a printed circuit board.

[0021] The fuse device 1 is installed by placing the connection portion 21 of the connection terminal portion 2 on the installation surface of the printed circuit board and fastening the connection portion 21 to the printed circuit board with bolts or screws. In other words, the fuse device 1 is installed with the bent portion 22 and the fusible portion 3 standing upright on the installation surface. Therefore, even if the bent portion 22 and the fusible portion 3 are formed large, the installation area of ​​the fuse device 1 is small, allowing for effective use of the printed circuit board on which many other components are mounted.

[0022] Furthermore, the fuse device 1 has a wall 5 between the two connection terminals 2. Therefore, the provision of the wall 5 prevents the two connection terminals 2 from coming into contact with each other even when they are placed close to each other, thereby enabling a more compact configuration of the fuse device 1. The provision of the wall 5 also prevents the two connection terminals 2 from coming into contact with each other and causing a short circuit.

[0023] As described above, the fuse device 1 of this embodiment has a fusible portion 3 between the bent portions 22 of the two connection terminal portions 2, which allows the two connection terminal portions 2 to be placed close to each other and can be installed in a small area.

[0024] Furthermore, by providing a wall portion 5 between the two connection terminal portions 2, the fuse device 1 according to this embodiment can be provided closer to the two connection terminal portions 2, and can be installed in a smaller area.

[0025] [Second embodiment] Next, a fuse device 1A according to a second embodiment will be described.

[0026] As shown in Figure 2, the fuse device 1A of the second embodiment is configured almost identically to the fuse device 1 of the first embodiment, and differs from the fuse device 1 of the first embodiment in that it has a bead portion 6 formed therein, which does not have a bead portion 6.

[0027] The bead portion 6 is a reinforcing portion formed on the connection terminal portion 2, and is formed by protruding the bent portion between the connection portion 21 and the bent portion 22. By forming the bead portion 6, the fuse device 1A can increase the strength of the bent connection terminal portion 2 and suppress deformation of the connection terminal portion 2.

[0028] The bead portion 6 is formed by being hammered outward from the inside of the bend of the connection terminal portion 2, and is formed so as to protrude outward from the bend. Therefore, as shown in Fig. 3, the bead portion 6 is prevented from coming into contact with the fastening member 7 when the fastening member 7 is fastened. This prevents the connection portion 21 from becoming large, and allows the fuse device 1A to be configured compactly.

[0029] In this way, the fuse device 1A according to the second embodiment can achieve the same effects as the fuse device 1 according to the first embodiment, and can also improve the strength of the connection terminal 2 by forming the bead portion 6. Furthermore, the fuse device 1A according to the second embodiment can be made smaller by forming the bead portion 6 so that it protrudes from the inside to the outside of the bent portion of the connection terminal 2.

[0030] The fuse device according to the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. The fuse devices 1 and 1A according to the embodiments may be configured by appropriately combining the components of the above-described embodiments and modifications.

[0031] For example, in the above-described embodiments, the fuse devices 1, 1A are mounted on a vehicle and used, but the fuse device according to the present invention may also be used in equipment, devices, etc. other than vehicles. [Explanation of symbols]

[0032] 1: Fuse device 2: Connection terminal 3: Soluble part 5: Wall part 6: Bead part 21: Connection 22: Bend X: Separation direction

Claims

1. Two connection terminal portions provided at a distance from each other; a fusible portion provided between the two connection terminal portions, the connection terminal portion has a connection portion electrically connected to an external device and a bent portion formed by bending the connection terminal portion with respect to the connection portion along a bending line in a direction in which the connection terminal portions are spaced apart, The fusible portion is provided between the bent portions of the two connection terminal portions. Fuse device.

2. The connection terminal portion has a bead portion formed by protruding from the surface at a bent portion between the connection portion and the bent portion. The fuse device of claim 1 .

3. The bead portion is formed by protruding from the outer surface of the bent portion between the connecting portion and the bent portion. The fuse device of claim 2 .

4. The connector further includes a wall portion formed between the two connection terminal portions and provided to separate the two connection terminal portions.

3. The fuse device according to claim 1 or 2.

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