Fuse

Abstract

The invention content of the present application provides a fuse that can be directly or indirectly attached to a battery. A fuse 400 fixed to a battery post BP or coupled to a coupling post 510 of a base member 500 coupled to the battery post BP includes: a fuse element 100, which includes an input terminal 110 fixed to the battery post BP or the coupling post 510, an external output terminal 120, and a fusing portion 130 disposed between the input terminal 110 and the external output terminal 120; a housing 200, which includes an exposure window 230 that exposes the fusing portion 130, and the housing 200 houses the fuse element 100; and a covering member 300, which covers the exposure window 230. The covering member 300 includes a protruding portion 340 that protrudes toward the battery BT side including the battery post BP or the base member 500 side, and the protruding portion 340 can abut against a part of the battery BT or a part of the base member 500.

Description

Technical Field

[0001] The invention of the present application relates to a fuse mainly used in an automotive circuit or the like. Background Art

[0002] Previously, fuses have been used to protect circuits installed in an automobile or the like and various electrical components connected to the circuit. Specifically, if an accidental overcurrent flows in the circuit, the fuse portion of the fuse element built in the fuse melts due to the heat generated by the overcurrent, protecting various electrical components from the excessive current flowing through them.

[0003] Moreover, depending on the application, there are various types of fuses. For example, the fuse described in Patent Document 1 is configured as a fuse unit so as to be easily attached to an in-vehicle battery. Specifically, the fuse unit connects the in-vehicle battery to a wire that supplies power to various electrical components, and includes an input terminal connected to a battery post of the battery, a plurality of external terminals connected to external wires, a circuit portion that distributes power from the input terminal to each external terminal, and a plurality of fuse portions formed in the circuit portion.

[0004] However, in this fuse unit, since the plurality of fuse portions are integrally formed with the circuit portion, it is inconvenient to replace or change the entire fuse unit when the rating of the fuse portion changes or a part of the fuse portion is melted. Therefore, there is a case where an independent fuse portion mode is adopted, that is, a mode in which fuses are individually attached to the battery instead of the fuse unit. However, since the fuse is smaller than the fuse unit, when the fuse is directly attached to the battery or indirectly attached to the battery via a base member, the position and orientation of the fuse change, and it is difficult to attach the fuse.

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2005-339965 Summary of the Invention

[0008] Technical Problem to be Solved by the Invention

[0009] Therefore, the invention of the present application provides a fuse that can be easily directly or indirectly attached to a battery.

[0010] Technical Solution for Solving the Problem

[0011] To solve the above problems, according to the invention content of the present application, a fuse is provided, which is fixed to a coupling post of a battery post or a base member, the coupling post being coupled to the battery post. The fuse includes: a fuse element including an input terminal fixed to the battery post or the coupling post, an external output terminal, and a fusing portion disposed between the input terminal and the external output terminal; a housing including an exposure window exposing the fusing portion, the housing accommodating the fuse element; and a covering member covering the exposure window, wherein the covering member includes a protruding portion protruding toward a battery side including the battery post or a base member side, and wherein the protruding portion can abut against a part of the battery or a part of the base member.

[0012] According to the above features, the protruding portion of the fuse protrudes toward the battery side or the base member side and is configured to be able to abut against a part of the battery or a part of the base member when the fuse is attached to the battery or the base member. Therefore, when attaching the fuse, the position and attitude of the fuse will not change due to the protruding portion, so that the fuse can be easily attached.

[0013] In addition, in the fuse according to the invention content of the present application, the covering member includes at least two of the protruding portions, and the protruding portions are separated from each other.

[0014] According to the above features, since the protruding portions abut against a part of the battery or a part of the base member at two positions, when the fuse is attached to the battery or the base member, the position and attitude of the fuse are more stable.

[0015] In addition, in the fuse according to the invention content of the present application, the external output terminal and the fusing portion extend downward from the input terminal.

[0016] According to the above features, since the external output terminal and the fusing portion extend downward from the input terminal, the external output terminal and the fusing portion are substantially in an inverted L shape, and when the fuse is attached to the base member or the battery, the fuse does not protrude laterally and fits well.

[0017] In addition, in the fuse according to the invention content of the present application, the covering member includes locking claws that engage with a part of the housing.

[0018] According to the above features, it is difficult for the covering member to disengage from the housing.

[0019] Advantageous Effects of the Present Invention

[0020] As described above, according to the fuse according to the invention content of the present application, the fuse can be easily attached directly or indirectly to the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an overall perspective view of a fuse element of a fuse according to the invention of the present application.

[0022] Figure 2 is an overall perspective view of a housing of a fuse element of a fuse according to the invention of the present application.

[0023] Figure 3 (a) of is a top view of a housing of a fuse according to the invention of the present application, Figure 3 (b) of is a side view of the housing, Figure 3 (c) of is a front view of the housing, and Figure 3 (d) of is a rear view of the housing.

[0024] Figure 4 (a) of is an overall perspective view of a covering member of a fuse according to the invention of the present application, Figure 4 (b) of is a top view of the covering member, Figure 4 (c) of is a front view of the covering member, and Figure 4 (d) of is a rear view of the covering member.

[0025] Figure 5 (a) of is an overall perspective view of a fuse before attaching the covering member, Figure 5 (b) of is an overall perspective view of the fuse after attaching the covering member, and Figure 5 (c) of is a rear view of the fuse after attaching the covering member.

[0026] Figure 6 (a) of is a perspective view showing the state where a fuse is attached to a base member attached to a battery, and Figure 6 (b) of is a top view of the state.

[0027] Figure 7 (a) of is a perspective view of the state where a fuse is attached to a base member, Figure 7 (b) of is a side view of the state, and Figure 7 (c) of is a top view of the state.

[0028] Figure 8 (a) of is a perspective view showing the state where a fuse is attached to a battery terminal of a battery, Figure 8 (b) of is a top view of the state, and Figure 8 (c) of is a top view of the state where a fuse is attached to a battery terminal. DETAILED DESCRIPTION OF THE INVENTION

[0029] In the following, each embodiment of the invention content of the present application will be described in conjunction with the accompanying drawings. In the embodiments described below, the shape, material, etc. of each component of the fuse are merely examples and are not limited thereto.

[0030] In Figure 1 the fuse element 100 of the fuse of the invention content of the present application will be described. Figure 1 is an overall perspective view of the fuse element 100.

[0031] The fuse element 100 is formed by stamping a flat plate made of a conductive metal (such as copper or its alloy) with a press or the like into Figure 1 the shape shown and bending the plate, and includes an input terminal 110 fixed to a battery post or coupled to a coupling post of the base member of the battery post, an external output terminal 120 for connecting an external wire, and a fuse portion 130 provided between the input terminal 110 and the external output terminal 120. The fuse portion 130 has a linear fuse portion in which small holes are provided in the plate constituting the fuse element 100 and the width is locally narrowed, and when an accidental overcurrent flows in a circuit or the like, the fuse portion 130 generates heat and melts, thereby cutting off the overcurrent.

[0032] In addition, the fuse portion 130 is not limited to being formed by a linear fuse portion with a narrow width, and any configuration can be adopted. For example, a metal material that may melt is locally arranged on the plate constituting the fuse element 100, as long as when an accidental overcurrent flows in a circuit or the like, the fuse portion 130 generates heat and melts, thereby cutting off the overcurrent. The fuse element 100 is provided with a fuse portion 130 and one external output terminal 120 coupled to the fuse portion 130, but is not limited thereto, and two or more external output terminals 120 coupled to the fuse portion 130 can be provided.

[0033] In addition, the input terminal 110 includes a coupling hole 112 through which a coupling post of a battery post or a base member is inserted on the distal end 111 side, and the proximal end 113 side is bent downward by about 90 degrees. The fuse portion 130 extends downward from the bent proximal end 113, and the external output terminal 120 coupled to the fuse portion 130 also extends downward. As described above, since the fuse portion 130 and the external output terminal 120 extend downward from the input terminal 110, the entire fuse element 100 is in an inverted L shape in a side view. The external output terminal 120 includes a coupling hole 121 to which a connection terminal for connecting an external wire can be fixed.

[0034] Next, reference will be made to Figure 2 and 3 to describe the state in which the fuse element 100 is accommodated in the housing 200. Figure 2is an overall perspective view of the housing 200 that houses the fuse element 100, Figure 3 (a) of Figure 3 is a top view of the housing 200, Figure 3 (b) of Figure 3 is a side view of the housing 200, Figure 3 (c) of Figure 3 is a front view of the housing 200, and Figure 3 (d) of Figure 3 is a rear view of the housing 200.

[0035] The entire housing 200 is made of an insulating synthetic resin and is configured to be able to house the fuse element 100 therein. Specifically, the housing 200 includes: an input-side housing 210 that covers the input terminal 110 of the fuse element 100; a fuse-section housing 220 that includes an exposure window 230 that exposes the fuse section 130; and an output-side housing 240 that covers the external output terminal 120. The input-side housing 210 has a recess 211 around the coupling hole 112 so that the coupling hole 112 of the input terminal 110 is exposed.

[0036] The exposure window 230 of the fuse-section housing 220 is generally quadrilateral and penetrates the fuse-section housing 220 from the outside to the inside. Accordingly, the fuse section 130 housed in the fuse-section housing 220 is exposed to the outside and the inside from the exposure window 230. In addition, the thickness L1 of the fuse-section housing 220 is smaller than other parts of the housing 200 so that it can be easily adapted to the covering member described below. Also, a recessed engaging portion 223 is provided on the front surface 221 of the fuse-section housing 220, and the locking claws of the covering member described below are engaged therewith. Similarly, a recessed engaging portion 224 is also provided on the rear surface 222 of the fuse-section housing 220, and the locking claws of the covering member described below are engaged therewith.

[0037] In addition, with the cylindrical connection terminal Y1 penetrating the coupling hole 121 of the external output terminal 120, the output-side housing 240 houses the external output terminal 120, and a recess 241 that is generally U-shaped and recessed is provided around the connection terminal Y1 so that the distal end side of the connection terminal Y1 protrudes outward from the output-side housing 240.

[0038] Next, reference will be made to Figure 4 to describe the covering member 300 that covers the exposure window 230 of the housing 200. Figure 4 (a) of Figure 4 is an overall perspective view of the covering member 300, Figure 4 (b) of Figure 4 is a top view of the covering member 300, Figure 4 (c) of Figure 4 is a front view of the covering member 300, and Figure 4 (d) of Figure 4 is a rear view of the covering member 300.

[0039] As Figure 4As shown in the figure, the covering member 300 is entirely made of a transparent or translucent synthetic resin, and includes flat plate-like side walls 310 and 320 and a coupling wall 330 that couples the side walls 310 and 320 parallel to each other. Additionally, on the opposite side of the coupling wall 330, the side walls 310 and 320 are not coupled to each other and are released, and this released portion serves as an insertion port 301 for inserting and attaching the covering member 300 to the fuse housing 220 in the housing 200, as described below. Each of the side walls 310 and 320 of the covering member 300 is sized to cover the entire exposed window 230 of the fuse housing 220.

[0040] In addition, two protruding portions 340 that protrude outward are formed on the side wall 320, and the protruding portions 340 are separated from each other. Further, the protruding portions 340 have a mountain shape in a top view, and the distal ends 341 of the protruding portions 340 have the same height. Additionally, locking claws 313 are alternately arranged on the inner sides of the upper end 311 and the lower end 312 of the side wall 310. Similarly, locking claws 323 are alternately arranged on the inner sides of the upper end 321 and the lower end 322 of the side wall 320. As will be described below, when the covering member 300 is attached to the fuse housing 220 of the housing 200, the locking claws 313 of the side wall 310 of the covering member 300 are engaged with the engaging portion 224 on the rear surface 222 side of the fuse housing 220, and the locking claws 323 of the side wall 320 of the covering member 300 are engaged with the engaging portion 223 on the front surface 221 side of the fuse housing 220, so that it is difficult for the covering member 300 to be detached from the housing 200.

[0041] Furthermore, the entire covering member 300 is made of a transparent or translucent synthetic resin, but the present invention is not limited thereto, and the covering member 300 can be made of any synthetic resin of any color. Two protruding portions 340 are formed on the side wall 320 of the covering member 300, but the present invention is not limited thereto, and only one protruding portion 340 may be formed at the center of the side wall 320. Additionally, three or more protruding portions 340 may be formed on the side wall 320 of the covering member 300.

[0042] Next, reference will be made to Figure 5 to describe the fuse 400 in a state where the covering member 300 is attached to the housing 200 that houses the fuse element 100. Figure 5 (a) of is an overall perspective view of the fuse 400 before attaching the covering member 300, Figure 5 (b) of is an overall perspective view of the fuse 400 after attaching the covering member 300, and Figure 5 (c) of is a rear view of the fuse 400 after attaching the covering member 300.

[0043] As Figure 5As shown in (a) of, the insertion port 301 of the covering member 300 is inserted into the fuse portion housing 220 of the housing 200 that houses the fuse element 100 from the side of the fuse portion housing 220. Subsequently, as Figure 5 shown in (b) and (c) of, the front surface 221 and the rear surface 222 of the fuse portion housing 220 are sandwiched between the side wall 320 and the side wall 310 of the covering member 300, and the exposed window 230 of the fuse portion housing 220 is covered by the side wall 310 and the side wall 320 of the covering member 300. As Figure 5 shown in (b) of, in the fuse 400 to which the covering member 300 is attached, the protruding portion 340 of the covering member 300 protrudes toward the inside of the fuse 400. In addition, as Figure 5 shown in (c) of, the fuse portion 130 in the exposed window 230 can be visually observed from the rear side of the fuse 400 through the transparent or translucent side wall 310 of the covering member 300. Therefore, it is possible to visually confirm whether the fuse portion 130 is fused through the covering member 300.

[0044] Next, the usage mode of the fuse 400 will be described with reference to Figure 6 and 7 . Figure 6 (a) of is a perspective view of the state where the fuse 400 is attached to the base member 500 attached to the battery BT, Figure 6 (b) of is a top view of the state, Figure 7 (a) of is a perspective view of the state where the fuse 400 is attached to the base member 500, Figure 7 (b) of is a side view of the state, and Figure 7 (c) of is a top view of the state.

[0045] First, as Figure 6 shown in (a) of, the base member 500 is attached to the metal battery post BP, and the metal battery post BP is provided in a part of the in-vehicle battery BT. The base member 500 includes a metal coupling post 510 and has a shape corresponding to that of the fuse 400 so as to attach the fuse 400. The base member 500 is used conventionally, and power is supplied from the battery post BP to the coupling post 510. A connection hole 501 is provided inside the main body portion 520 of the base member 500, and the battery post BP is inserted and electrically connected through the connection hole, and a circuit 521 electrically connects the battery post BP connected to the connection hole 501 to the coupling post 510. The base member 500 is used when the fuse 400 cannot be directly attached to the battery post BP. For example, since the shape of the fuse 400 is quite different from the shape around the battery post BP, it is difficult to fix the position and attitude of the fuse 400 when the fuse 400 is directly connected to the battery post BP, and in this case, the base member 500 is used.

[0046] Moreover, when the fuse 400 is attached to the coupling post 510 of the base member 500, as Figure 6 shown, the fuse 400 is attached from above the base member 500 such that the coupling post 510 of the base member 500 is inserted into the coupling hole 112 of the input terminal 110 of the fuse 400. The base member 500 includes a flat upper surface portion 523 and a side surface portion 522 extending downward from the upper surface portion 523. Accordingly, the input terminal 110 of the fuse 400 can be placed on the upper surface portion 523 of the base member 500, and the periphery of the cover member 300 of the fuse 400 can be attached so as to fit to the side surface portion 522 of the base member 500.

[0047] Next, as Figure 7 shown, a fixing member 530 such as a bolt is screwed onto the coupling post 510 of the base member 500 and penetrates the coupling hole 112 of the fuse 400 from above to fix the coupling hole 112 of the fuse 400 so as not to come off the coupling post 510. Then, the fuse 400 is fixed to the base member 500. As Figure 7 shown in (b) of, since the connection terminal Y1 of the fuse 400 projects inward, the connection terminal X2 of the external wire X1 can be fixed to the connection terminal Y1. Then, the electric power supplied from the battery post BP of the battery BT is transmitted from the circuit 521 built in the base member 500 to the coupling post 510, and is transmitted from the input terminal 110 of the fuse element 100 of the fuse 400 fixed to the coupling post 510 to the external output terminal 120. In addition, the electric power is transmitted from the external output terminal 120 of the fuse 400 to the wire X1 via the connection terminal Y1 and supplied to various electrical components connected to the wire X1. If an accidental overcurrent flows in the circuit, the fusing portion 130 of the fuse 400 is fused due to the heat generated by the overcurrent to protect various electrical components from the excessive current flowing therethrough.

[0048] Here, as Figure 7As shown in (c) thereof, when the fuse 400 is attached to the base member 500, the protrusion 340 protruding toward the inside of the fuse 400 abuts against the side surface portion 522 of the main body portion 520 of the base member 500. That is, the protrusion 340 of the fuse 400 protrudes toward the base member 500 and is configured to be able to abut against a part of the base member 500 when the fuse 400 is attached to the base member 500. Therefore, when the fuse 400 is attached to the base member 500, the position and attitude of the fuse 400 will not be changed by the protrusion 340, so that the fuse 400 can be easily attached. For example, when the fixing member 530 is screwed to attach the fuse 400 to the base member 500, the protrusion 340 of the fuse 400 abuts against a part of the base member 500, thereby preventing the fuse 400 from rotating around the coupling post 510 as the fixing member 530 rotates.

[0049] In addition, as Figure 7 shown in (c) thereof, since the fuse 400 includes two separated protrusions 340 from each other, and the protrusions 340 abut against a part of the base member 500 at two positions, and therefore, when the fuse 400 is attached to the base member 500, the position and attitude of the fuse 400 are more stable. For example, it is possible to effectively prevent the fuse 400 from rotating clockwise and counterclockwise around the coupling post 510 as the fixing member 530 rotates. The fuse 400 includes two separated protrusions 340 from each other, but the present invention is not limited thereto, and the fuse 400 may include only one protrusion 340, or the fuse 400 may include three or more protrusions 340.

[0050] Furthermore, as Figure 7 shown in (b) and (c) thereof, in the state where the fuse 400 is attached to the base member 500, the distal end 341 of the protrusion 340 of the fuse 400 abuts against the side surface portion 522 of the base member 500, but the present invention is not limited thereto, and there may be a gap between the distal end 341 of the protrusion 340 of the fuse 400 and the base member 500. Even if there is a gap between the protrusion 340 and the base member 500, when the fuse 400 is attached to the base member 500 and the position and attitude of the fuse 400 change, if the protrusion 340 can abut against a part of the base member 500, the position and attitude of the fuse 400 will not change further, so that the fuse 400 can be easily attached. The protrusion 340 of the fuse 400 abuts against the side surface portion 522 of the base member 500. However, the present invention is not limited thereto. As long as the protrusion 340 can abut against the side surface portion 522, the protrusion 340 can be configured to be able to abut against any position of the base member 500 other than the side surface portion 522.

[0051] The protrusion 340 of the fuse 400 in the inventive content of the present application has a height H1 protruding towards the base member 500 and can abut against a part of the base member 500. The height H1 of the protrusion 340 can be set to any height as long as the protrusion 340 can abut against a part of the base member 500, that is, in the state where the fuse 400 is attached to the base member 500, the protrusion 340 abuts against the base member 500, or when the position and attitude of the fuse 400 change, even if there is a gap between the protrusion 340 and the base member 500, the protrusion 340 also abuts against a part of the base member 500. For example, when relative to Figure 7 In the state shown in, when the side surface portion 522 of the base member 500 further extends towards the fuse 400, the height H1 of the protrusion 340 can be reduced, and when the side surface portion 522 of the base member 500 further moves away from the fuse 400, the height H1 of the protrusion 340 can be increased.

[0052] In addition, since the protrusion 340 of the fuse 400 in the inventive content of the present application is provided on the covering member 300, the manufacturing cost caused by the shape change of the protrusion 340 can be minimized. Specifically, also in a conventional fuse, the covering member 300 is made of a transparent or translucent synthetic resin and is manufactured separately from the housing 200 to ensure the visibility of the fuse portion 130 disposed inside. Therefore, in the inventive content of the present application, when changing the shape of the protrusion 340 by providing the protrusion 340 on the covering member 300, only the shape of the covering member 300 needs to be changed without affecting the design of the entire housing 200. Therefore, in the inventive content of the present application, the increase in the manufacturing and design costs of the entire fuse 400 caused by the shape change of the protrusion 340 can be minimized.

[0053] Also, as shown in Figure 7 (b) of, since the external output terminal 120 and the fuse portion 130 extend downward from the input terminal 110, the fuse 400 in the inventive content of the present application is substantially in an inverted L shape, and when the fuse 400 is attached to the base member 500 or the battery BT, the fuse 400 does not protrude laterally and fits well.

[0054] In addition, in Figure 6 and 7 , the fuse 400 is indirectly connected to the battery post BP of the battery BT via the base member 500, but the present invention is not limited thereto. As long as the shape of the fuse 400 corresponds to the shape around the battery post BP, the fuse 400 can be directly connected to the battery post BP without the base member 500, as shown in Figure 8 . Figure 8FIG. (a) is a perspective view showing a state where a fuse 400 is attached to a battery post BP of a battery BT, Figure 8 FIG. (b) is a top view of the state, and Figure 8 FIG. (c) is a top view of a state where the fuse 400 is attached to the battery post BP.

[0055] As Figure 8 shown in FIGS. (a) and (b), the fuse 400 is attached to an attachment surface BM around the battery post BP such that the battery post BP of the battery BT is inserted into a coupling hole 112 of an input terminal 110 of the fuse 400. The attachment surface BM is a flat surface formed by cutting off a side surface portion BS near a corner of the battery BT, and the battery post BP projects upward from the attachment surface BM. Thus, the input terminal 110 of the fuse 400 can be placed on the attachment surface BM, and the periphery of a cover member 300 of the fuse 400 can be mounted so as to fit the side surface portion BS of the battery BT. Next, as Figure 8 shown in FIG. (c), a fixing member BB such as a bolt is screwed onto the battery post BP from above, penetrating the coupling hole 112 of the fuse 400, and the coupling hole 112 of the fuse 400 is fixed so as not to come off the battery post BP. Then, the fuse 400 is fixed to the battery post BP.

[0056] Moreover, as Figure 8 shown in FIG. (c), when the fuse 400 is attached to the battery post BP, a protrusion 340 protruding toward the inside of the fuse 400 abuts against the side surface portion BS of the battery BT. Therefore, since the position and attitude of the fuse 400 are not changed by the protrusion 340, the fuse 400 can be easily attached to the battery post BP. For example, when the fixing member BB is screwed to attach the fuse 400 to the battery post BP, the protrusion 340 of the fuse 400 abuts against a part of the battery BT, thereby preventing the fuse 400 from rotating around the battery post BP as the fixing member BB rotates.

[0057] In addition, as Figure 8As shown in (c) thereof, in a state where the fuse 400 is attached to the battery post BP, the protrusion 340 of the fuse 400 abuts against the side surface portion BS of the battery BT. However, the present invention is not limited thereto, and there may be a gap between the protrusion 340 of the fuse 400 and the battery BT. Even if there is a gap between the protrusion 340 and the battery BT, when the fuse 400 is attached to the battery post BP and the position and attitude of the fuse 400 change, if the protrusion 340 can abut against a part of the battery BT, the position and attitude of the fuse 400 will not change further, so that the fuse 400 can be easily attached. The protrusion 340 of the fuse 400 abuts against the side surface portion BS of the battery BT. However, the present invention is not limited thereto. As long as the protrusion 340 can abut against the side surface portion BS, the protrusion 340 can be configured to be able to abut against any position of the battery BT other than the side surface portion BS.

[0058] The fuse in the inventive content of the present application is not limited to the above embodiments, and various modifications and combinations are possible within the scope of the claims and embodiments, and these modifications and combinations are also included within the scope of the claims.

[0059] [Description of symbols]

[0060] 100: Fuse element

[0061] 110: Input terminal

[0062] 120: External output terminal

[0063] 130: Fusing portion

[0064] 200: Housing

[0065] 230: Exposure window

[0066] 300: Cover member

[0067] 340: Protrusion

[0068] 400: Fuse

[0069] 500: Base member

[0070] 510: Coupling post

[0071] BP: Battery post

[0072] BT: Battery

Claims

1. A fuse is fixed to a coupling post of a battery post or a base member, and the coupling post is coupled to the battery post. Characterized in that the fuse comprises: a fuse element including an input terminal fixed to the battery post or the coupling post, an external output terminal, and a fusing portion disposed between the input terminal and the external output terminal; a housing including an exposure window exposing the fusing portion, and the housing houses the fuse element; and a covering member covering the exposure window, wherein the covering member includes a protruding portion protruding toward a battery side including the battery post or a base member side, the covering member and the protruding portion are separate from the housing, and wherein the protruding portion can abut against a part of the battery or a part of the base member, the covering member includes at least two of the protruding portions, and the protruding portions are separated from each other in a manner wider than the width of the fusing portion.

2. The fuse according to claim 1, characterized in that the external output terminal and the fusing portion extend downward from the input terminal.

3. The fuse according to claim 1 or 2, characterized in that the covering member includes locking claws engaged with a part of the housing.

Images