JP2023041989A - battery terminal cover - Google Patents

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

The present invention relates to battery terminal covers.

A vehicle battery is equipped with a detachable cover in order to protect the fastening portion between the battery post and the battery terminal, which are exposed to the outside. For example, in Patent Document 1, a cover opening/closing portion provided with an insertion piece having a locking portion on the distal end side in proximity to a hinge portion, and a cover main body portion provided with an insertion portion into which the insertion piece is inserted are inserted. The insertion piece of the cover opening/closing part is inserted into the insertion hole of the cover main body, and the engaging part of the cover opening/closing part is engaged with the insertion hole, so that the open state of the cover opening/closing part is maintained. A protective cover for the battery connection is described.

JP-A-2002-329492

By the way, in Patent Document 1, when the insertion piece of the cover opening/closing portion is inserted into the insertion hole portion of the cover main body portion and the cover opening/closing portion is locked to the cover main body portion, the upper side of the cover is locked. The space is not sufficient, and there is room for improvement, for example, in terms of workability during maintenance.

The present invention has been made in view of the above problems, and provides a cover member having a lid that can be opened and closed with respect to a main body. To provide a battery terminal cover capable of securing space on the direction side.

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. a base member having insulating properties and accommodating the bus bar therein; and a fixed state in which the bus bar having insulating properties is fixed to the battery post via the battery terminal, at least the battery post and the a cover member covering an object to be protected including the battery terminal, the cover member having a main body fixed to the base member, exposing the object to the outside in an open position, and protecting the object in a closed position. a lid portion covering an object, extending along the width direction of the main body portion, the lid portion being rotatable about the width direction with respect to the main body portion between the open position and the closed position. and a locking mechanism that locks the lid portion to the main body portion when the lid portion is in the open position, wherein the main body portion , a first upper wall surface formed toward the removal direction, and a first side wall surface formed toward the first connection direction among the connection directions orthogonal to the attachment/detachment direction and the width direction of the main body portion; wherein, in the closed position, the lid portion has a second upper wall surface formed in the removal direction and a second side wall surface formed in the first connection direction; The locking mechanism includes 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. , wherein the first upper wall surface and the second upper wall surface face each other in the attaching/detaching direction at the open position, and the locking portion locks the locked portion. The first side wall surface and the second side wall surface face each other in the connecting direction.

According to the battery terminal cover of the present invention, in the cover member having the lid that can be opened and closed with respect to the main body, even when the lid is in the open position, the space around the battery post and the battery terminal in the removal direction is reduced. There is an effect that it can be ensured.

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. 2 is an exploded perspective view showing a schematic configuration of the fuse unit of FIG. 1. FIG. FIG. 3 is a side view showing a schematic configuration of the fuse unit with the lid in the open position. 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. 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. FIG. 6 is a partial perspective view showing a schematic configuration of a battery terminal cover according to a modification of the embodiment; FIG. 7 is a partial vertical cross-section showing a schematic configuration of a battery terminal cover according to a modification with the lid portion in the closed position. FIG. 8 is a partial vertical cross-section showing a schematic configuration of a battery terminal cover with a lid portion in the open position according to a modification.

EMBODIMENT OF THE INVENTION Below, embodiment of the battery terminal cover which concerns on this invention is described in detail, referring drawings. It should be noted that the present invention is not limited by this embodiment. In addition, components in the following embodiments include those that can be easily assumed by those skilled in the art, or substantially the same components. Also, the constituent elements in the following embodiments can be omitted, replaced, and changed in various ways without departing from the scope of the invention.

[Embodiment]
A 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, is 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. A fuse unit 1 includes a bus bar 2 , a base member 3 and a battery terminal cover 4 .

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, Z directions intersect or are orthogonal to each other. As for the X directions, the X1 direction on one side is the first connection direction, and the X2 direction on the other side is the second connection direction. As for the Z directions, one Z1 direction is the removal direction, and the other Z2 direction is the mounting direction. Note that the Z direction is a direction along the vertical direction, but is not limited to this.

Here, the battery terminal 60 is attached to the battery post 51 of the battery 50 . The battery terminal 60 is a component for electrically connecting the battery 50 and the fuse unit 1 by being attached to the battery post 51 . The battery 50 is formed in, for example, a housing shape, and is a so-called secondary battery or power storage device. The battery 50 has a battery housing 52 that houses battery fluid and various components that make up the battery 50. Among the plurality of surfaces of the battery housing 52, the battery post 51 is located on the surface located on the removal direction side when the battery 50 is mounted on the vehicle. is established. The battery post 51 protrudes in the removal direction from the surface of the battery housing 52 on the removal direction side. The battery post 51 is formed in a columnar shape, more specifically, in a columnar shape (or a cylindrical shape) tapered so that the diameter becomes smaller toward the distal end side. The battery terminal 60 is fixed to the battery post 51 with fastening members such as bolts and nuts.

The bus bar 2 shown in FIG. 2 is made of a conductive plate-like metal material or the like, and has a fusible body (not shown) in part. The fusible body is a portion that is provided in the current path of the busbar 2 and melts when an overcurrent flows. The fusible body is, for example, a configuration in which a low-melting-point metal tip is crimped and welded to a strip-shaped conductive portion with a narrow width in the bus bar 2, and when an overcurrent flows, it melts and cuts off the corresponding current path. . Here, the overcurrent of the fusible material is, for example, a current exceeding a preset rating. A fusible body melts when a current exceeding a preset rating flows. The rated current of the fusible body is determined according to the current of the circuit to be protected. The bus bar 2 is formed in an inverted L shape when the fuse unit 1 is viewed from the width direction. The busbar 2 is housed inside the base member 3 , but the electrically connected portion is exposed from the base member 3 . A portion of the busbar 2 exposed from the base member 3 is a portion connected to the battery terminal 60 and a portion to which the stud bolt 35 is attached.

The bus bar 2 is electrically connected to the battery terminal 60 by inserting the stud bolt 61 of the battery terminal 60 into the bolt insertion hole 2a and fastening it with a nut (not shown). be done. That is, the busbar 2 is fixed to the battery terminals 60 and electrically connected to the battery posts 51 via the battery terminals 60 . The bus bar 2 has a portion to which the stud bolt 35 is attached. By being fastened, it is electrically connected to the electric wire 6 .

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

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

The body portion 10 extends in the attachment/detachment direction of the fuse unit 1 , and the end on the removal direction side is connected to the lid portion 20 via a hinge 30 . The main body 10 is formed in a housing shape that opens in the second connection direction and the mounting direction, and in the mounting state in which the battery terminal cover 4 is mounted on the base member 3, a part of the base member 3 is provided inside. accommodate. The body portion 10 is fixed to the base member 3 in the attached state. The body portion 10 includes a first upper wall 11 and first side walls 13A, 13B, and 13C.

The first upper wall 11 is a portion of the main body 10 that connects the ends of the first side walls 13A to 13C in the removal direction. The first upper wall 11 is connected to the hinge 30 at the end on the second connecting direction side. The first upper wall 11 has first upper wall surfaces 11</b>A and 11</b>B, a first side wall surface 12 and locking holes 15 .

The first upper wall surfaces 11</b>A and 11</b>B are formed toward the removal direction of the attachment/detachment direction of the main body 10 . Each of the first upper wall surfaces 11A and 11B is a flat surface extending in the width direction, and each has a rectangular shape when the main body 10 is viewed from the attachment/detachment direction. Of the first upper wall surfaces 11A and 11B, the first upper wall surface 11A is positioned on the second connecting direction side, specifically, on the hinge 30 side when the main body 10 is viewed from the attachment/detachment direction. 11B is located on the first connecting direction side, specifically, on the side opposite to the hinge 30 side. The first upper wall surfaces 11A and 11B are connected via the first side wall surface 12 . The first upper wall surface 11A is positioned on the removal direction side with respect to the first upper wall surface 11B. The first upper wall surfaces 11A and 11B and the first side wall surface 12 form a step when the body portion 10 is viewed from the width direction.

The first side wall surface 12 is formed on the first upper wall 11 toward the first connection direction. The first side wall surface 12 extends in the width direction and is positioned 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 each of the first upper wall surfaces 11A and 11B. The first side wall surface 12 is provided with a locking hole 15 substantially in the center in the width direction.

The locking hole 15 is formed penetrating from the first side wall surface 12 toward the inner wall surface 16 . The locking hole 15 is formed in, for example, a rectangular shape when viewed from the connecting direction. The locking hole 15 is provided on the mounting direction side of the first side wall surface 12 and is not provided to the end on the removal direction side. That is, part of the first side wall surface 12 is left on the removal direction side of the locking hole 15 .

The first side wall 13</b>A is connected to the end of the first upper wall 11 in the first connecting direction and extends in the attachment/detachment direction of the main body 10 . The first side walls 13</b>B and 13</b>C are connected to both ends of the first upper wall 11 in the width direction, and extend in the attachment/detachment direction of the main body 10 . The first side wall 13A is positioned in the first connecting direction of the body portion 10 . The first side walls 13B and 13C are arranged to face each other in the width direction of the body portion 10 .

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

The second upper wall 21 is a portion that connects the ends of the second side walls 23A to 23C on the removal direction side in the lid portion 20 in the closed position. The second upper wall 21 is connected to the hinge 30 at the end in the first connecting direction. The second upper wall 21 has second upper wall surfaces 21</b>A and 21</b>B, a second side wall surface 22 and a locking piece 25 .

The second upper wall surfaces 21A and 21B are formed toward the removal direction of the attachment/detachment direction of the body portion 10 in the lid portion 20 at the closed position. Each of the second upper wall surfaces 21A and 21B is a flat surface 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 attaching/detaching direction. Of the second upper wall surfaces 21A and 21B, the second upper wall surface 21A is located on the first connecting direction side, specifically, on the hinge 30 side when the lid portion 20 in the closed position is viewed from the attaching/detaching direction. The second upper wall surface 21B is located on the second connecting direction side, specifically, on the side opposite to the hinge 30 side. The second upper wall surfaces 21A and 21B are connected via the second side wall surface 22 . The second upper wall surface 21A is located on the mounting direction side with respect to the second upper wall surface 21B. The second upper wall surfaces 21A and 21B and the second side wall surface 22 form a step when the lid portion 20 is viewed from the width direction. As shown in FIGS. 3 and 5, the second upper wall surfaces 21A and 21B face the first upper wall surfaces 11A and 11B in the attaching/detaching direction when the lid portion 20 is in the open position.

The second side wall surface 22 is formed on the second upper wall 21 toward the first connection direction. The second side wall surface 22 extends in the width direction and is positioned 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 each of the second upper wall surfaces 21A and 21B. A locking piece 25 is provided at substantially the center of the second side wall surface 22 in the width direction.

The locking piece 25 is formed so as to protrude from the second side wall surface 22 in the first connecting direction. The locking piece 25 is formed in, for example, a rectangular shape when viewed from the connecting direction. The locking piece 25 is provided at the end on the removal direction side of the second side wall surface 22 and is not provided on the end on the mounting direction side. The locking piece 25 has a locking protrusion 25a and a locking facing surface 25b.

The locking protrusion 25a is formed at the end of the locking piece 25 in the first connecting direction and protrudes from the end in the mounting direction. The locking projection 25 a extends in the width direction of the locking piece 25 . The locking protrusion 25a is provided with a locking facing surface 25b on the second locking direction side. 5, when the locking piece 25 is locked in the locking hole 15, the locking facing surface 25b faces the inner wall surface 16 in the connecting direction.

23 A of 2nd side walls are connected with the edge part of the 2nd connection direction of the 2nd upper wall 21, and are extended and formed in the attachment or detachment direction of the cover part 20 of a closed position. The second side walls 23B and 23C are connected to both ends in the width direction of the second upper wall 21 and 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 where the hinge 30 is connected, and the end on the mounting direction side forms the opening 24. As shown in FIG. 23 A of 2nd side walls are located in the edge part of the 2nd connection direction of the cover part 20 of a closed position. The second side walls 23B and 23C are arranged to face the lid 20 in the closed position in the width direction.

The hinge 30 extends along the width direction of the body portion 10 and connects the lid portion 20 to the body portion 10 so as to be rotatable about the width direction between the open position and the closed position. . Here, the term "around the width direction" means, for example, the Q direction shown in FIGS. When the battery terminal cover 4 is viewed from the attachment/detachment direction, the hinge 30 is positioned between the body portion 10 and the lid portion 20 in the connecting direction.

The locking mechanism 9 locks the lid portion 20 to the main body portion 10 when the lid portion 20 is at the open position. The locking mechanism 9 of the present embodiment includes 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 the locking hole 15 . A 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 portion 20 is in the open position, and the locking facing surface 25b is opposed to the inner wall surface 16 of the main body portion 10 in the connecting direction. Locked. That is, when the lid portion 20 is in the open position, the locking mechanism 9 engages the locking piece 25 , which is the locking portion of the lid portion 20 , with the locking hole 15 , which is the locked portion of the main body portion 10 . stop.

In the fuse unit 1 configured as described above, in the fixed state in which the bus bar 2 is fixed to the battery post 51 via the battery terminal 60, the operator moves the lid portion 20 of the battery terminal cover 4 to the closed position in the width direction. to the open position (FIG. 4). When the lid portion 20 is in the open position, the second upper wall surfaces 21A and 21B face the first upper wall surfaces 11A and 11B of the body portion 10 in the attachment/detachment direction, and the second side wall surfaces 21A and 21B face the first side wall surface 12. 22 are opposed in the connecting 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 body portion 10, and the second upper wall surface 21B faces the first upper wall surface 11B of the body portion 10. opposite. More specifically, when the lid portion 20 is in the open position, the second upper wall surface 21A is in contact with the first upper wall surface 11A, and the second upper wall surface 21B is in contact with the first upper wall surface 11B. The height of the lid portion 20 in the attachment/detachment direction at the open position is different from the length of both ends of the lid portion 20 in the connection direction at the closed position, and is from the first upper wall surface 11B of the main body portion 10 to the opening 24 of the lid portion 20. is the length of When the lid portion 20 is in the open position, the length from the first upper wall surface 11B of the main body portion 10 to the opening 24 of the lid portion 20 is the length in the attaching/detaching direction of the lid portion 20 when the lid portion 20 is in the closed position. Height. On the other hand, the length of both ends in the connecting direction of the lid portion 20 in the closed position is substantially the same as the length in the connecting direction between the second side wall 23A and the hinge 30. It is longer than the height (length) of the lid portion 20 in the attaching/detaching direction. In addition, the conventional cover opening/closing portion opens approximately 90° with respect to the cover main body portion between the closed position and the open position, but the lid portion 20 of the present embodiment opens approximately 180° with respect to the main body portion 10 . can be opened. Thus, in the lid portion 20 in the open position, the height of the end portion of the battery post 51 on the removal direction side from the top surface can be made lower than the height of the cover opening/closing portion in the conventional open position. This makes it easier for a worker to position his/her hand in the space on the removal direction side of the battery post 51 when performing maintenance work on the battery post 51 and the battery terminal 60 that are to be protected from the removal direction side of the lid portion 20 . be able to. Maintenance work includes, for example, removing and attaching the battery terminal 60 to the battery post 51 . For example, the operator positions the hand in the space on the removal direction side of the battery post 51 to perform the maintenance work.

As described above, in the battery terminal cover 4 of the present embodiment, when the lid portion 20 is in the closed position, the second upper wall surfaces 21A and 21B formed upward in the attachment/detachment direction are connected to the first connecting portion. and a second side wall surface 22 oriented in the direction. The locking mechanism 9 includes 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. When the locking mechanism 9 is in the open position, the first upper wall surface 11A is closed. , 11B and the second upper wall surfaces 21A, 21B face each other in the attaching/detaching direction. opposite.

With the above configuration, the height of the end of the battery post 51 of the cover 20 in the open position in the removal direction can be lowered, and when the battery terminal cover 4 is viewed from the removal direction, the cover can be A worker can easily place his hand in the space on the removal direction side of the battery post 51 during work such as maintenance on the battery post 51 and the battery terminal 60 from the removal direction side of the battery 20 . As a result, even when the lid portion 20 is in the open position, it is possible to secure a space in the removal direction around the battery post 51 and the battery terminal 60 to be protected, and to improve workability such as maintenance.

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

In the above embodiment, the locking mechanism 9 is configured by the locking hole 15 provided on the first side wall surface 12 and the locking piece 25 provided on the second side wall surface 22, but is limited to this. not to be For example, as shown in FIGS. 6 to 8, in a battery terminal cover 4A according to a modification of the present embodiment, a locking mechanism 9A includes a first locking protrusion 18 provided on the first side wall surface 12 and a second It differs from the above-described embodiment in that it is configured with second locking projections 28 provided on two side wall surfaces 22 .

The battery terminal cover 4A is composed of a body portion 10A and a lid portion 20A. The body portion 10A has first upper wall surfaces 11C and 11D, a first side wall surface 12A, and a first locking projection 18. As shown in FIG. The lid portion 20A has second upper wall surfaces 21C and 21D, a second side wall surface 22A, and a second locking projection 28. As shown in FIG.

Like 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. 12 A of 1st side wall surfaces are formed toward the 1st connection direction like the 1st side wall surface 12. As shown in FIG. The first side wall surface 12A extends in the width direction and is positioned between the first upper wall surface 11C and the first upper wall surface 11D in the connection direction. 12 A of 1st side wall surfaces are provided with the 1st latching protrusion 18 in the approximate center in the width direction.

The first locking protrusion 18 is formed to protrude from the first side wall surface 12A in the first connecting direction. The first locking projection 18 is formed in, for example, a rectangular shape when viewed from the connecting direction. The first locking projection 18 is provided at the end of the first side wall surface 12A in the removal direction, and is not provided to the end in the mounting direction. The distance in the attachment/detachment direction between the first locking projection 18 and the first upper wall surface 11D is set narrower than the height (thickness) of the second locking projection 28 in the mounting/demounting direction.

Similarly to the second upper wall surfaces 21A and 21B, the second upper wall surfaces 21C and 21D are formed upward in the attaching/detaching direction of the main body portion 10A in the closed position lid portion 20A. 22 A of 2nd side wall surfaces are formed toward the 1st connection direction like the 2nd side wall surface 22. As shown in FIG. The second side wall surface 22A extends in the width direction and is positioned between the second upper wall surface 21C and the second upper wall surface 21D in the connection direction. 22 A of 2nd side wall surfaces are provided with the 2nd latching protrusion 28 in the approximate center in the width direction.

The second locking projection 28 is formed to protrude from the second side wall surface 22A in the first connecting direction. The second locking projection 28 is formed in, for example, a rectangular shape when viewed from the connecting direction. The second locking projection 28 is provided at the end of the second side wall surface 22A in the removal direction, and is not provided to the end in the mounting direction.

The locking mechanism 9A locks the lid portion 20A to the main body portion 10A when the lid portion 20A is at the open position. The locking mechanism 9A according to the modification includes a locked portion (or locked portion) provided on the first side wall surface 12A and a locked portion (or locked portion) provided on the second side wall surface 22A. Consists of A first locking protrusion 18 is provided as a locking portion (or locked portion) on the first side wall surface 12A. A second locking protrusion 28 is provided as a locking portion (or locked portion) on the second side wall surface 22A. The second locking projection 28 is inserted between the first locking projection 18 and the first upper wall surface 11D when the lid portion 20A is in the open position, and the second locking projection 28 is inserted between the first locking projection 18 and the first upper wall surface 11D. The locking portion is locked to the locked portion by the frictional force generated by the mutual contact facing each other in the attachment/detachment direction. As a result, the locking mechanism can be configured with a simple shape.

In addition, in the above-described embodiment, the first side wall surface 12 is provided with the locking hole 15 and the second side wall surface 22 is provided with the locking piece 25 , but the present invention is not limited to this. For example, the locking piece 25 may be provided on the first side wall surface 12 and the locking hole 15 may be provided on the second side wall surface 22 .

Moreover, 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.

Reference Signs List 1 fuse unit 2 busbar 3 base member 4 battery terminal cover 9 locking mechanism 10 main body 11A, 11B first upper wall surface 12 first side wall surface 15 locking hole 20 lid portion 21A, 21B second upper wall surface 22 second side wall surface 25 locking piece 30 hinge 50 battery 51 battery post 60 battery terminal

Claims (3)

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 housing the busbar therein;
a cover member having insulating properties and covering an object 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 is
a main body fixed to the base member;
a lid that exposes the protection target to the outside in the open position and covers the protection target in the closed position;
a hinge extending along the width direction of the main body and connecting the lid to the main body so as to be rotatable about the width 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 is
a first upper wall surface formed in the removal direction of the attachment/detachment direction of the main body;
a first side wall surface formed in a first connection direction among connection directions orthogonal to the attachment/detachment direction and the width direction of the main body,
When the lid is in the closed position,
a second upper wall surface formed in the removal direction;
a second side wall surface formed in the first connection direction,
The locking mechanism is
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,
At the open position, the first upper wall surface and the second upper wall surface are opposed to each other in the attachment/detachment direction, and the locking portion locks the locked portion so that the first side wall surface and the The second side wall face faces the connecting direction,
A battery terminal cover characterized by: 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 penetrating from the other of the first side wall surface and the second side wall surface toward the inner wall surface,
The battery terminal cover of Claim 1. The locking portion is
a first locking protrusion 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 projection and the second locking projection are
facing the attachment/detachment direction in the open position,
The battery terminal cover of Claim 1.

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