Battery terminal cover

Abstract

To provide a battery terminal cover capable of securing a space at a side in a removal direction around a battery post and a battery terminal even if a lid part which can be opened / closed with respect to a main body part is located at an opening position in a cover member comprising the lid part.SOLUTION: In a battery terminal cover 4, a lid part 20 comprises: second upper wall surfaces 21A and 21B formed at a closing position in a removal direction in attachment and detachment directions; and a second side wall surface 22 formed in a first connection direction. A lock mechanism 9 consists of a lock hole 15 provided on a first side wall surface 12 and a lock piece 25 provided on the second side wall surface 22. At an opening position, first upper wall surfaces 11A and 11B and the second upper wall surfaces 21A and 21B are opposed in the attachment and detachment directions and the lock hole 15 is locked by the lock piece 25, such that the first side wall surface 12 and the second side wall surface 22 are opposed in the connection direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a battery terminal cover. [Background technology]

[0002] A removable cover is attached to a vehicle battery to protect the fastening portion between the battery post and the battery terminal, which are exposed to the outside. For example, Patent Document 1 describes a protective cover for a battery connection portion that has a cover opening / closing portion provided with an insertion piece having an engagement portion at the tip end near a hinge portion, and a cover main body portion provided with an insertion hole into which the insertion piece is inserted, in which the insertion piece of the cover opening / closing portion is inserted into the insertion hole of the cover main body portion and the engagement portion of the cover opening / closing portion engages with the insertion hole, thereby maintaining the cover opening / closing portion in an open state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-329492 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned Patent Document 1, when the insertion piece of the cover opening / closing part is inserted into the insertion hole of the cover main body part and the cover opening / closing part is locked to the cover main body part, there is insufficient space above the cover, and there is room for improvement, for example, in terms of workability during maintenance.

[0005] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a battery terminal cover in a cover member having a lid portion that can be opened and closed relative to a main body portion, which can ensure space around the battery post and battery terminal in the removal direction even when the lid portion is in the open position. [Means for solving the problem]

[0006] In order to achieve the above object, a battery terminal cover according to the present invention includes: a bus bar fixed to a battery terminal fixed to a battery post and electrically connected to the battery post via the battery terminal; an insulating base member that houses the bus bar; and an insulating cover member that covers objects to be protected, including at least the battery post and the battery terminal, in a fixed state in which the bus bar is fixed to the battery post via the battery terminal. The cover member includes a main body portion fixed to the base member; a lid portion that exposes the objects to be protected to the outside in an open position and covers the objects to be protected in a closed position; and a hinge that extends along the width direction of the main body portion and connects the lid portion to the main body portion so that the lid portion can rotate about the width direction between the open position and the closed position. and a locking mechanism that locks the lid with respect to the main body when the lid is in the open position, wherein the main body has a first upper wall surface formed toward a removal direction among attachment / detachment directions of the main body, and a first side wall surface formed toward a first connecting direction among connecting directions perpendicular to the attachment / detachment direction and the width direction of the main body, and the lid, in the closed position, has a second upper wall surface formed toward the removal direction and a second side wall surface formed toward the first connecting direction, and the locking mechanism is composed of a locking portion provided on one of the first side wall surface and the second side wall surface, and a locked portion provided on the other of the first side wall surface and the second side wall surface, and when in the open position, the first upper wall surface and the second upper wall surface face each other in the attachment / detachment direction, and the locking portion locks the locked portion, so that the first side wall surface and the second side wall surface face each other in the connecting direction. the locking portion is a locking piece formed to protrude in the first connecting direction from one of the first side wall surface and the second side wall surface, and the locked portion is a locking hole formed to penetrate from the other of the first side wall surface and the second side wall surface toward the inner wall surface. It is characterized by:

[0007] The battery terminal cover of the present invention has the advantage that, in a cover member having a lid portion that can be opened and closed relative to the main body portion, even when the lid portion is in the open position, space can be secured around the battery post and battery terminal in the removal direction. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing the appearance of a fuse unit to which a battery terminal cover according to an embodiment is applied. [Figure 2] FIG. 2 is an exploded perspective view showing a schematic configuration of the fuse unit of FIG. [Figure 3] FIG. 3 is a side view showing a schematic configuration of the fuse unit with the cover in the open position. [Figure 4] FIG. 4 is a partial vertical cross-sectional view showing a schematic configuration of the battery terminal cover with the lid portion in the closed position. [Figure 5] FIG. 5 is a partial vertical cross-sectional view showing a schematic configuration of the battery terminal cover with the lid portion in the open position. [Figure 6] FIG. 6 is a partial perspective view showing a schematic configuration of a battery terminal cover according to a modified example of the embodiment. [Figure 7] FIG. 7 is a partial vertical cross-sectional view showing a schematic configuration of a battery terminal cover according to a modified example, with the lid portion in the closed position. [Figure 8] FIG. 8 is a partial vertical cross-sectional view showing a schematic configuration of a battery terminal cover according to a modified example, with the lid portion in the open position. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of a battery terminal cover according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to these embodiments. Furthermore, the components in the following embodiments include those that would be easily conceivable to a person skilled in the art, or those that are substantially identical. Furthermore, the components in the following embodiments can be variously omitted, replaced, or modified without departing from the spirit and scope of the invention.

[0010] [Embodiment] The battery terminal cover 4 shown in FIGS. 1 to 3 is, for example, a cover member applied to a fuse unit 1 having an overcurrent protection function. The fuse unit 1 is mounted on a vehicle such as an automobile, electrically connected to a battery post 51 of a battery 50 via a battery terminal 60, and is used for overcurrent protection of an electric circuit. The fuse unit 1 is configured to include a bus bar 2, a base member 3, and the battery terminal cover 4.

[0011] In the following description, the illustrated X direction is the connection direction of the battery terminal cover 4 in this embodiment. The Y direction is the width direction of the battery terminal cover 4. The Z direction is the attachment / detachment direction of the battery terminal cover 4. The X, Y, and Z directions intersect or are perpendicular to each other. Of the X directions, the X1 direction is the first connection direction, and the X2 direction is the second connection direction. Of the Z directions, the Z1 direction is the removal direction, and the Z2 direction is the attachment direction. The Z direction is a direction along the vertical direction, but is not limited to this.

[0012] Here, the battery terminal 60 is attached to the battery post 51 of the battery 50. The battery terminal 60 is attached to the battery post 51 to electrically connect the battery 50 and the fuse unit 1. The battery 50 is formed, for example, in the shape of a housing and is a so-called secondary battery or electricity storage device. The battery 50 has a battery housing 52 that contains battery fluid and various components of the battery 50. Of the multiple surfaces of the battery 50, the battery post 51 is erected on the surface that faces the removal direction when the battery 50 is installed in a vehicle. The battery post 51 protrudes in the removal direction from the surface of the battery housing 52 that faces the removal direction. The battery post 51 is formed in a cylindrical shape, more specifically, a cylindrical shape that is tapered so that the diameter decreases toward the tip. The battery terminal 60 is fixed to the battery post 51 by fastening members such as bolts and nuts.

[0013] The busbar 2 shown in FIG. 2 is made of a conductive metal plate and includes a fusible element (not shown). The fusible element is located in the current path of the busbar 2 and melts when an overcurrent flows. The fusible element is, for example, a narrow, strip-shaped conductive portion of the busbar 2 to which a low-melting-point metal tip is crimped and then welded. When an overcurrent flows, the fusible element melts to interrupt the corresponding current path. Here, the overcurrent of the fusible element refers to, for example, a current greater than or equal to a preset rated current. The fusible element melts when a current greater than or equal to the preset rated current flows. The rated current of the fusible element is determined according to the current of the circuit to be protected. When viewed from the width direction of the fuse unit 1, the busbar 2 is formed in an inverted L shape. The busbar 2 is housed within the base member 3, but the electrically connected portion is exposed from the base member 3. The portion of the busbar 2 exposed from the base member 3 is the portion that connects to the battery terminal 60 and the portion to which the stud bolt 35 is attached.

[0014] The busbar 2 is electrically connected to the battery terminal 60 by inserting the stud bolts 61 of the battery terminal 60 into the bolt insertion holes 2a and fastening them with nuts (not shown). In other words, the busbar 2 is fixed to the battery terminal 60 and electrically connected to the battery post 51 via the battery terminal 60. The busbar 2 is also electrically connected to the electric wire 6 by inserting the stud bolts 35 into bolt insertion holes of terminal fittings (not shown) provided at the ends of the electric wires 6 and fastening them with nuts (not shown).

[0015] The base member 3 is made of an insulating resin material or the like, and houses the bus bar 2 therein. When viewed from the width direction of the fuse unit 1, the base member 3 is formed in an inverted L shape to match the shape of the bus bar 2. A battery terminal cover 4 is attached to the base member 3 from the mounting direction of the fuse unit 1, and is locked by a locking mechanism (not shown).

[0016] The battery terminal cover 4 is made of an insulating resin material or the like, and covers objects to be protected, including at least the battery post 51 and the battery terminal 60, when the bus bar 2 is fixed to the battery post 51 via the battery terminal 60. The battery terminal cover 4 is formed in an inverted L shape when viewed from the width direction of the fuse unit 1. The battery terminal cover 4 is attached to the base member 3 in the installation direction of the fuse unit 1 and is locked by a locking mechanism (not shown). The battery terminal cover 4 includes a main body 10, a lid 20, a hinge 30 connecting the main body 10 and the lid 20, and a locking mechanism 9 locking the lid 20 to the main body 10. The main body 10, the lid 20, and the hinge 30 are integrally molded.

[0017] The main body 10 extends in the attachment / detachment direction of the fuse unit 1, and the end on the detachment direction side is connected to the lid 20 via a hinge 30. The main body 10 is formed in the shape of a housing that opens in the second attachment direction and the attachment direction side, and in an attached state where the battery terminal cover 4 is attached to the base member 3, it accommodates a part of the base member 3 inside. In the attached state, the main body 10 is fixed to the base member 3. The main body 10 is composed of a first upper wall 11 and first side walls 13A, 13B, 13C.

[0018] The first upper wall 11 is a part of the main body 10 that connects the ends of the first side walls 13A to 13C in the removal direction. The end of the first upper wall 11 in the second connecting direction is connected to the hinge 30. The first upper wall 11 has first upper wall surfaces 11A and 11B, a first side wall surface 12, and a locking hole 15.

[0019] The first upper wall surfaces 11A, 11B are formed facing the removal direction of the attachment / detachment direction of the main body 10. The first upper wall surfaces 11A, 11B are each flat surfaces extending in the width direction and each have a rectangular shape when the main body 10 is viewed from the attachment / detachment direction. Of the first upper wall surfaces 11A, 11B, when the main body 10 is viewed from the attachment / detachment direction, the first upper wall surface 11A is located on the second connecting direction side, specifically on the hinge 30 side, and the first upper wall surface 11B is located on the first connecting direction side, specifically on the side opposite the hinge 30 side. The first upper wall surfaces 11A, 11B are connected via the first side wall surface 12. The first upper wall surface 11A is located on the removal direction side relative to the first upper wall surface 11B. The first upper wall surfaces 11A, 11B and the first side wall surface 12 form a step when the main body 10 is viewed from the width direction.

[0020] The first side wall surface 12 is formed on the first upper wall 11 in the first connecting direction. The first side wall surface 12 extends in the width direction and is located between the first upper wall surface 11A and the first upper wall surface 11B in the connecting direction. The first side wall surface 12 forms a right angle with the first upper wall surfaces 11A, 11B. The first side wall surface 12 has a locking hole 15 formed in approximately the center in the width direction.

[0021] The locking hole 15 is formed penetrating from the first side wall surface 12 toward the inner wall surface 16. When viewed from the connecting direction, the locking hole 15 is formed, for example, in a rectangular shape. The locking hole 15 is provided on the mounting direction side of the first side wall surface 12 and does not extend to the end on the removal direction side. In other words, a part of the first side wall surface 12 remains on the removal direction side of the locking hole 15.

[0022] The first side wall 13A is connected to an end of the first upper wall 11 in the first connecting direction, and is formed to extend in the attachment / detachment direction of the main body portion 10. The first side walls 13B and 13C are connected to both end portions of the first upper wall 11 in the width direction, and are formed to extend in the attachment / detachment direction of the main body portion 10. The first side wall 13A is located in the first connecting direction of the main body portion 10. The first side walls 13B and 13C are arranged opposite each other in the width direction of the main body portion 10.

[0023] The lid 20 is connected to the main body 10 via a hinge 30 and opens and closes in the direction Q relative to the main body 10. The lid 20 exposes the object to be protected to the outside in the open position and covers the object to be protected in the closed position. In a fixed state in which the bus bar 2 is fixed to the battery post 51 via the battery terminal 60, the lid 20 exposes the object to be protected to the outside in the open position and covers the object to be protected in the closed position. The lid 20 includes a second upper wall 21, second side walls 23A, 23B, 23C, and an opening 24.

[0024] The second upper wall 21 is a portion that connects the ends of the second side walls 23A to 23C in the removal direction when the cover 20 is in the closed position. The end of the second upper wall 21 in the first connecting direction is connected to the hinge 30. The second upper wall 21 has second upper wall surfaces 21A and 21B, a second side wall surface 22, and a locking piece 25.

[0025] The second upper wall surfaces 21A, 21B are formed in the lid portion 20 in the closed position, facing the removal direction of the main body portion 10 in the attachment / detachment direction. The second upper wall surfaces 21A, 21B are each flat surfaces extending in the width direction, and each has a substantially rectangular shape when the lid portion 20 in the closed position is viewed from the attachment / detachment direction. Of the second upper wall surfaces 21A, 21B, when the lid portion 20 in the closed position is viewed from the attachment / detachment direction, the second upper wall surface 21A is located on the first connecting direction side, specifically, on the hinge 30 side, and the second upper wall surface 21B is located on the second connecting direction side, specifically, on the side opposite the hinge 30 side. The second upper wall surfaces 21A, 21B are connected via the second side wall surface 22. The second upper wall surface 21A is located on the attachment direction side relative to the second upper wall surface 21B. The second upper wall surfaces 21A, 21B and the second side wall surface 22 form a step when viewed from the width direction of the lid portion 20. As shown in Figures 3 and 5, the second upper wall surfaces 21A, 21B face the first upper wall surfaces 11A, 11B in the attachment / detachment direction when the lid portion 20 is in the open position.

[0026] The second side wall surface 22 is formed on the second upper wall 21 in the first connecting direction. The second side wall surface 22 extends in the width direction and is located between the second upper wall surface 21A and the second upper wall surface 21B in the connecting direction. The second side wall surface 22 forms a right angle with the second upper wall surfaces 21A, 21B. A locking piece 25 is provided on the second side wall surface 22 approximately in the center in the width direction.

[0027] The locking piece 25 is formed to protrude from the second side wall surface 22 in the first connecting direction. When viewed from the connecting direction, the locking piece 25 is formed, for example, in a rectangular shape. The locking piece 25 is provided at the end of the second side wall surface 22 on the removal direction side, and does not extend to the end on the installation direction side. The locking piece 25 has a locking protrusion 25a and an opposing locking surface 25b.

[0028] The locking protrusion 25a is formed at an end of the locking piece 25 in the first connecting direction and protrudes from that end toward the mounting direction. The locking protrusion 25a extends in the width direction of the locking piece 25. The locking protrusion 25a is provided with an opposing locking surface 25b on the second locking direction side. As shown in FIG. 5, when the locking piece 25 is locked in the locking hole 15, the opposing locking surface 25b faces the inner wall surface 16 in the connecting direction.

[0029] The second side wall 23A is connected to the end of the second upper wall 21 in the second connecting direction, and is formed to extend in the attachment / detachment direction of the lid portion 20 in the closed position. The second side walls 23B and 23C are connected to both ends of the second upper wall 21 in the width direction, and are formed to extend in the attachment / detachment direction of the lid portion 20 in the closed position. The second side walls 23A to 23C are arranged along the outer periphery of the second upper wall 21 excluding the portion to which the hinge 30 is connected, and the end on the attachment direction side forms an opening 24. The second side wall 23A is located at the end of the lid portion 20 in the second connecting direction in the closed position. The second side walls 23B and 23C are arranged opposite each other in the width direction of the lid portion 20 in the closed position.

[0030] The hinge 30 extends along the width direction of the main body 10 and connects the lid 20 to the main body 10 so that the lid 20 can rotate about the width direction between an open position and a closed position. Here, the width direction refers to, for example, the Q direction shown in Figures 1 and 4. When the battery terminal cover 4 is viewed from the attachment / detachment direction, the hinge 30 is located between the main body 10 and the lid 20 in the connection direction.

[0031] The locking mechanism 9 locks the lid 20 to the main body 10 when the lid 20 is in the open position. The locking mechanism 9 in this embodiment is composed of a locked portion provided on the first side wall surface 12 and a locking portion provided on the second side wall surface 22. The locked portion provided on the first side wall surface 12 is a locking hole 15. The locking portion provided on the second side wall surface 22 is a locking piece 25. The locking piece 25 is inserted into the locking hole 15 when the lid 20 is in the open position, and is locked to the locking hole 15 by having the locking opposing surface 25b face the inner wall surface 16 of the main body 10 in the coupling direction. In other words, the locking mechanism 9 locks the locking piece 25, which is the locking portion of the lid 20, to the locking hole 15, which is the locked portion of the main body 10, when the lid 20 is in the open position.

[0032] In the fuse unit 1 configured as described above, with the busbar 2 fixed to the battery post 51 via the battery terminal 60, an operator rotates the lid portion 20 of the battery terminal cover 4 widthwise from the closed position to the open position (FIG. 4). In the open position, the second upper wall surfaces 21A, 21B of the lid portion 20 face the first upper wall surfaces 11A, 11B of the main body 10 in the attachment / detachment direction, and the second side wall surface 22 faces the first side wall surface 12 in the attachment direction (FIGS. 3 and 5). Specifically, when the lid portion 20 is in the open position, the second upper wall surface 21A faces the first upper wall surface 11A of the main body 10, and the second upper wall surface 21B faces the first upper wall surface 11B of the main body 10. More specifically, when the lid 20 is in the open position, the second upper wall surface 21A abuts against the first upper wall surface 11A, and the second upper wall surface 21B abuts against the first upper wall surface 11B. The height of the lid 20 in the attachment / detachment direction in the open position is different from the length of both ends of the lid 20 in the coupling direction in the closed position, and is the length from the first upper wall surface 11B of the main body 10 to the opening 24 of the lid 20. When the lid 20 is in the open position, the length from the first upper wall surface 11B of the main body 10 to the opening 24 of the lid 20 is the height of the lid 20 in the attachment / detachment direction when the lid 20 is in the closed position. On the other hand, the length of both ends of the lid 20 in the coupling direction in the closed position is approximately the same as the length in the coupling direction between the second side wall 23A and the hinge 30, and is longer than the height (length) of the lid 20 in the attachment / detachment direction when the lid 20 is in the closed position. Furthermore, while a conventional cover opening / closing section opens approximately 90° relative to the cover main body section between the closed position and the open position, the lid section 20 of this embodiment can open approximately 180° relative to the main body section 10. In this way, with the lid section 20 in the open position, the height of the end of the lid section 20 on the removal direction side from the top surface of the battery post 51 can be made lower than the height of the cover opening / closing section in the conventional open position. This makes it easier for workers to position their hands in the space on the removal direction side of the battery post 51 when performing maintenance or other work, so that the battery post 51 and battery terminal 60, which are to be protected from the removal direction side of the lid section 20, are within reach. Maintenance work includes, for example, removing and attaching the battery terminal 60 to the battery post 51.For example, a worker performs maintenance work by placing his / her hands in the space on the removal side of the battery post 51.

[0033] As described above, in the battery terminal cover 4 of this embodiment, the lid portion 20 has, in the closed position, second upper wall surfaces 21A, 21B formed facing upward in the attachment / detachment direction, and second side wall surface 22 formed facing the first connecting direction. The locking mechanism 9 is composed of locking holes 15 provided in first side wall surface 12 and locking pieces 25 provided in second side wall surface 22. In the open position, first upper wall surfaces 11A, 11B and second upper wall surfaces 21A, 21B face each other in the attachment / detachment direction, and locking pieces 25 lock into locking holes 15, so that the first side wall surface 12 and second side wall surface 22 face each other in the connecting direction.

[0034] With the above configuration, the height of the end of the lid part 20 on the removal direction side from the top surface of the battery post 51 in the open position can be reduced, and when the battery terminal cover 4 is viewed from the removal direction side, an operator can easily position their hand in the space on the removal direction side of the battery post 51 from the removal direction side of the lid part 20 to the battery post 51 and battery terminal 60 when performing maintenance or other work. As a result, even when the lid part 20 is in the open position, space can be secured on the removal direction side around the battery post 51 and battery terminal 60, which are to be protected, improving the ease of work during maintenance and other work.

[0035] In addition, in the battery terminal cover 4 of this embodiment, the locking hole 15 is formed on the first side wall surface 12 of the main body portion 10, and the locking piece 25 is formed on the second side wall surface 22 of the lid portion 20.When the lid portion 20 is in the closed position, the locking hole 15 and the locking piece 25 are not formed toward the removal direction from the first upper wall surfaces 11A, 11B and the second upper wall surfaces 21A, 21B, so the height of the lid portion 20 on the removal direction side can be reduced.

[0036] In the above embodiment, the locking mechanism 9 is composed of a locking hole 15 provided in the first side wall surface 12 and a locking piece 25 provided in the second side wall surface 22, but is not limited to this. For example, as shown in FIGS. 6 to 8, a battery terminal cover 4A according to a modified example of this embodiment differs from the above embodiment in that a locking mechanism 9A is composed of a first locking protrusion 18 provided in the first side wall surface 12 and a second locking protrusion 28 provided in the second side wall surface 22.

[0037] The battery terminal cover 4A is composed of a main body 10A and a lid 20A. The main body 10A has first upper wall surfaces 11C and 11D, a first side wall surface 12A, and a first locking projection 18. The lid 20A has second upper wall surfaces 21C and 21D, a second side wall surface 22A, and a second locking projection 28.

[0038] Similar to the first upper wall surfaces 11A and 11B, the first upper wall surfaces 11C and 11D are formed facing upward in the attachment / detachment direction of the main body portion 10A. Similar to the first side wall surface 12, the first side wall surface 12A is formed facing the first connecting direction. The first side wall surface 12A extends in the width direction and is located between the first upper wall surface 11C and the first upper wall surface 11D in the connecting direction. A first locking protrusion 18 is provided on the first side wall surface 12A at approximately the center in the width direction.

[0039] The first locking projection 18 is formed to protrude from the first side wall surface 12A in the first connecting direction. When viewed from the connecting direction, the first locking projection 18 is formed, for example, in a rectangular shape. The first locking projection 18 is provided at the end of the first side wall surface 12A on the side facing the removal direction, and does not extend to the end on the side facing the installation direction. The distance between the first locking projection 18 and the first upper wall surface 11D in the attachment / detachment direction is set narrower than the height (thickness) of the second locking projection 28 in the attachment / detachment direction.

[0040] Similar to second top wall surfaces 21A and 21B, second top wall surfaces 21C and 21D are formed to face upward in the attachment / detachment direction of main body 10A when lid 20A is in the closed position. Similar to second side wall surface 22, second side wall surface 22A is formed to face the first connecting direction. Second side wall surface 22A extends in the width direction and is located between second top wall surface 21C and second top wall surface 21D in the connecting direction. A second locking protrusion 28 is provided on second side wall surface 22A approximately at the center in the width direction.

[0041] The second locking projection 28 is formed to protrude from the second side wall surface 22A in the first connecting direction. When viewed from the connecting direction, the second locking projection 28 is formed, for example, in a rectangular shape. The second locking projection 28 is provided at the end of the second side wall surface 22A on the removal direction side, and does not extend to the end on the installation direction side.

[0042] The locking mechanism 9A locks the cover 20A to the main body 10A when the cover 20A is in the open position. The modified locking mechanism 9A is composed of a locked portion (or locking portion) provided on the first side wall surface 12A and a locking portion (or locked portion) provided on the second side wall surface 22A. A first locking protrusion 18 is provided on the first side wall surface 12A as the locking portion (or locked portion). A second locking protrusion 28 is provided on the second side wall surface 22A as the locking portion (or locked portion). When the cover 20A is in the open position, the second locking protrusion 28 is inserted between the first locking protrusion 18 and the first upper wall surface 11D. The second locking protrusion 28 comes into contact with the first locking protrusion 18 in the attachment / detachment direction, and the locking portion is locked to the locked portion by the frictional force generated by this. This allows the locking mechanism to be configured in a simple shape.

[0043] In the above embodiment, the locking hole 15 is provided in the first side wall surface 12 and the locking piece 25 is provided in the second side wall surface 22, but this is not limited to this. For example, the locking piece 25 may be provided in the first side wall surface 12 and the locking hole 15 may be provided in the second side wall surface 22.

[0044] Furthermore, in the above embodiment, the fuse unit 1 has an overcurrent protection function, but is not limited to this, and may not have an overcurrent protection function. [Explanation of symbols]

[0045] 1 fuse unit 2 busbars 3 Base material 4 Battery terminal cover 9 Locking mechanism 10 Main body 11A,11B First upper wall surface 12 First side wall 15 Locking hole 20 Lid 21A, 21B Second upper wall surface 22 Second side wall 25 Locking piece 30 Hinge 50 Battery 51 Battery Post 60 Battery terminal

Claims

1. a bus bar fixed to a battery terminal fixed to the battery post and electrically connected to the battery post via the battery terminal; a base member having insulating properties and accommodating the bus bar therein; a cover member having insulating properties, which covers objects to be protected including at least the battery posts and the battery terminals in a fixed state in which the bus bars are fixed to the battery posts via the battery terminals, The cover member is a main body portion fixed to the base member; a cover portion that exposes the object to be protected to the outside in an open position and covers the object to be protected in a closed position; a hinge extending along a width direction of the main body portion and connecting the lid portion to the main body portion so as to be rotatable about the width direction between the open position and the closed position; a locking mechanism that locks the lid portion to the main body portion when the lid portion is in the open position, The main body portion is a first upper wall surface formed toward a removal direction in the attachment / detachment direction of the main body portion; a first side wall surface formed toward a first connecting direction among connecting directions orthogonal to the attachment / detachment direction and the width direction of the main body portion, In the closed position, the lid portion a second upper wall surface formed in the removal direction; a second side wall surface formed in the first connecting direction, The locking mechanism includes: a locking portion provided on one of the first side wall surface and the second side wall surface; a locked portion provided on the other of the first side wall surface and the second side wall surface, When in the open position, the first upper wall surface and the second upper wall surface face each other in the attachment / detachment direction, and the locking portion locks the locked portion, so that the first side wall surface and the second side wall surface face each other in the connection direction, The locking portion is a locking piece formed to protrude in the first connecting direction from one of the first side wall surface and the second side wall surface, The locked portion is a locking hole formed through the other of the first side wall surface and the second side wall surface toward the inner wall surface; A battery terminal cover.

2. A bus bar fixed to a battery terminal fixed to a battery post and electrically connected to the battery post via the battery terminal; a base member having insulating properties and accommodating the bus bar therein; a cover member having insulating properties, which covers objects to be protected including at least the battery posts and the battery terminals in a fixed state in which the bus bars are fixed to the battery posts via the battery terminals, The cover member is a main body portion fixed to the base member; a cover portion that exposes the object to be protected to the outside in an open position and covers the object to be protected in a closed position; a hinge extending along a width direction of the main body portion and connecting the lid portion to the main body portion so as to be rotatable about the width direction between the open position and the closed position; a locking mechanism that locks the lid portion to the main body portion when the lid portion is in the open position, The main body portion is a first upper wall surface formed toward a removal direction in the attachment / detachment direction of the main body portion; a first side wall surface formed toward a first connecting direction among connecting directions orthogonal to the attachment / detachment direction and the width direction of the main body portion, In the closed position, the lid portion a second upper wall surface formed in the removal direction; a second side wall surface formed in the first connecting direction, The locking mechanism includes: a locking portion provided on one of the first side wall surface and the second side wall surface; a locked portion provided on the other of the first side wall surface and the second side wall surface, When in the open position, the first upper wall surface and the second upper wall surface face each other in the attachment / detachment direction, and the locking portion locks the locked portion, so that the first side wall surface and the second side wall surface face each other in the connection direction, The locking portion is a first locking projection formed to protrude in the first connecting direction from one of the first side wall surface and the second side wall surface, The locked portion is a second locking projection formed to protrude in the first connecting direction from the other of the first side wall surface and the second side wall surface, The first locking protrusion and the second locking protrusion are In the open position, the direction of attachment and detachment is opposite to the direction of attachment and detachment. A battery terminal cover.

Images