JP6600547B2 - Fusible link unit - Google Patents

Description

  The present invention relates to a fusible link unit.

  As a technology related to a conventional fusible link unit, for example, in Patent Document 1, a power supply side terminal connected to a bolt standing on a battery terminal, a load side terminal connected to a load terminal, and a power supply side Covering the conductor by exposing the connection part between the power source side terminal and the other terminal of the load side terminal, and the conductor integrally formed in a flat plate shape with the fusible body provided across the terminal and the load side terminal A fuse unit having a resin cover is disclosed.

JP 2013-037949 A

  Incidentally, the fuse unit described in Patent Document 1 described above has room for further improvement in terms of assembling the battery, for example.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a fusible link unit that can be properly assembled to a battery.

  In order to achieve the above object, a fusible link unit according to the present invention includes a fusible link that is connected to a battery terminal and melts a fusible body when an overcurrent flows, and the battery terminal is connected to a post stand of a battery housing. A holding portion having a mounting portion that is mounted at a position that can be fastened to a battery post provided on a mounting surface; and a holding mechanism that is connected to the mounting portion and holds the fusible link on the post standing surface; A locking mechanism that locks the mechanism on the post standing surface, and the locking mechanism is formed to be elastically deformable, and a locking portion that can be locked to the battery housing is provided at a tip portion. A spring position that is rotatably supported by the holding mechanism, and a locking position at which the locking portion and the battery housing are locked as the spring body is rotated. The A linear member that is supported by the holding mechanism so as to be movable between a release position where the locking with the terry casing is released, and the spring body is supported by the linear member. The base end portion is formed in a spiral shape, and the engaging portion is provided at the distal end portion outside the spiral shape.

  In the fusible link unit, the spring body extends along the supported portion and a second direction intersecting the first direction along the rotation axis of the linear member from the supported portion. A first extending portion, a first bent portion that is folded back from the first extending portion toward the supported portion, and a parallel to the first extending portion along the second direction from the first bent portion. And a second bent part that is folded back from the second extended part to the supported part side on the opposite side of the first bent part across the supported part; A third extending portion that extends along the third direction intersecting both the first direction and the second direction from the second bent portion and constitutes the tip portion provided with the locking portion. At least the first bent portion is elastically deformed in the third direction, and the second bent portion is elastically deformed in the second direction. It can be a shall.

  In the fusible link unit, the supported portion may be folded back from the first extending portion to the opposite side of the first bent portion, and the linear member may be inserted inside. .

  The fusible link unit may include a biasing portion that biases the spring body toward the release position.

  A fusible link unit according to the present invention holds a fusible link in a holding mechanism to which a battery terminal is mounted, and elastically deforms a spring body, and the spring body has a locking position and a release position. Since the holding mechanism is locked onto the post standing surface by the locking mechanism having a linear member that is movably supported between the two, the effect that the battery can be properly assembled is obtained.

FIG. 1 is an exploded perspective view illustrating a schematic configuration of a fusible link unit according to the first embodiment. FIG. 2 is an exploded perspective view illustrating a schematic configuration of the fusible link unit according to the first embodiment. FIG. 3 is a perspective view illustrating a schematic configuration of the fusible link unit according to the first embodiment. FIG. 4 is a perspective view illustrating a schematic configuration of a battery to which the fusible link unit according to the first embodiment is applied. FIG. 5 is a perspective view illustrating a schematic configuration of a fusible link fusible element included in the fusible link unit according to the first embodiment. FIG. 6 is a partial cross-sectional view along the first width direction including the first locking claw portion of the fusible link unit according to the first embodiment. FIG. 7 is a partial cross-sectional view along the first width direction including the second locking claw portion of the fusible link unit according to the first embodiment. FIG. 8 is a perspective view illustrating a schematic configuration of the post standing surface side of the fusible link unit according to the first embodiment. FIG. 9 is a perspective view illustrating a schematic configuration near the locking mechanism support portion of the fusible link unit according to the first embodiment. FIG. 10 is an exploded perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the first embodiment. FIG. 11 is a cross-sectional perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the first embodiment. FIG. 12 is a perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the first embodiment. FIG. 13 is a perspective view illustrating a schematic configuration of a cover included in the fusible link unit according to the first embodiment. FIG. 14 is a partial cross-sectional view along the first width direction including the first locking recess and the first cover locking claw of the fusible link unit according to the first embodiment. FIG. 15 is a partial cross-sectional view along the first width direction including the second locking recess and the second cover locking claw of the fusible link unit according to the first embodiment. FIG. 16 is a perspective view illustrating a schematic configuration of a locking mechanism included in the fusible link unit according to the first modification. FIG. 17 is a perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the second modification. FIG. 18 is a perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the second embodiment. FIG. 19 is a partial cross-sectional view along the first width direction including the first locking claw portion of the fusible link unit according to the third embodiment.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

[Embodiment 1]
1 and 2 are exploded perspective views showing a schematic configuration of the fusible link unit according to the first embodiment. FIG. 3 is a perspective view illustrating a schematic configuration of the fusible link unit according to the first embodiment. FIG. 4 is a perspective view illustrating a schematic configuration of a battery to which the fusible link unit according to the first embodiment is applied. FIG. 5 is a perspective view illustrating a schematic configuration of a fusible link fusible element included in the fusible link unit according to the first embodiment. FIG. 6 is a partial cross-sectional view along the first width direction including the first locking claw portion of the fusible link unit according to the first embodiment. FIG. 7 is a partial cross-sectional view along the first width direction including the second locking claw portion of the fusible link unit according to the first embodiment. FIG. 8 is a perspective view illustrating a schematic configuration of the post standing surface side of the fusible link unit according to the first embodiment. 9 and 12 are perspective views illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the first embodiment. FIG. 10 is an exploded perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the first embodiment. FIG. 11 is a cross-sectional perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the first embodiment. FIG. 13 is a perspective view illustrating a schematic configuration of a cover included in the fusible link unit according to the first embodiment. FIG. 14 is a partial cross-sectional view along the first width direction including the first locking recess and the first cover locking claw of the fusible link unit according to the first embodiment. FIG. 15 is a partial cross-sectional view along the first width direction including the second locking recess and the second cover locking claw of the fusible link unit according to the first embodiment. FIG. 16 is a perspective view illustrating a schematic configuration of a locking mechanism included in the fusible link unit according to the first modification. FIG. 17 is a perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the second modification.

  In the following description, a direction along the central axis X of the battery post 102 is referred to as an axial direction. Typically, the axial direction is a direction along the vertical direction in a state where the battery 100 is mounted on a vehicle or the like, and a post standing surface 105 of the battery casing 101 described later typically has a battery casing. This corresponds to the upper surface of the body 101 in the vertical direction. Hereinafter, the one axial direction may be referred to as the lower axial direction, and the other axial direction may be referred to as the upper axial direction. In order to make the following explanation easy to understand, one of the two directions orthogonal to the axial direction is called a first width direction and the other is called a second width direction for convenience. The first width direction as the first direction, the second width direction as the second direction, and the axial direction as the third direction are orthogonal to each other. The first width direction corresponds to a direction along the rotation axis X1 of the linear member 52 described later. In the following description, unless otherwise specified, each part of the fusible link unit 1 is assembled in the battery post 102 in an appropriate positional relationship and described as a direction in a state of being mounted on a vehicle.

  A fusible link unit (hereinafter, also referred to as “FL (Fusable Link) unit”) 1 according to the present embodiment is a battery mounted on a vehicle or the like as shown in FIGS. It is applied to the battery terminal 2 connected to 100, and is used for overcurrent protection of an electrical circuit. The FL unit 1 is assembled to the battery post 102 of the battery 100, and includes a battery terminal 2, a fusible link 3, a protector 4 as a holding mechanism, a locking mechanism 5, and a connecting terminal 6 as a connecting member. And a cover 7.

  Here, the battery 100 to which the FL unit 1 is applied is mounted on a vehicle or the like as a power storage device, for example. As shown in FIG. 4, the battery 100 includes a battery casing 101 that houses battery fluid and various components that constitute the battery 100, the above-described battery post 102 provided on the battery casing 101, and the like. Is done. The battery casing 101 includes a substantially rectangular box-shaped casing main body 103 with one of the surfaces open, and a lid member 104 that closes the opened surface, and has a substantially rectangular parallelepiped shape as a whole. It is formed. Here, the battery casing 101 has a long side in the direction along the first width direction and a short side in the direction along the second width direction, but is not limited thereto. The battery post 102 is made of conductive lead or the like, and is erected on the post erecting surface 105 of the lid member 104.

  The post standing surface 105 is a surface on which the battery post 102 is erected in the battery casing 101. Here, the post standing surface 105 is, for example, a surface (vertical upper surface) in the vertical direction of the lid member 104 constituting the battery housing 101 in a state where the battery 100 is mounted on a vehicle or the like. The post standing surface 105 is the entire upper surface in the vertical direction of the lid member 104, including the bottom surface of the recess 106 formed on the upper surface in the vertical direction of the lid member 104. The recess 106 includes a pair of rectangular recesses 106a and 106b that are recessed in a substantially rectangular shape near the angular position of the upper surface of the lid member 104, and a connection recess 106c that connects and communicates with the pair of rectangular recesses 106a. Formed. The pair of rectangular recesses 106a and 106b are formed on one side in the second width direction at corners facing each other in the first width direction. The connection recess 106 c is formed along the edge of the lid member 104 in the first width direction. The battery posts 102 are erected in pairs, one on each of the post erecting surfaces 105 in the rectangular recesses 106a and 106b formed in the vicinity of the corner position of the upper surface of the lid member 104 in the vertical direction. Each battery post 102 has a substantially cylindrical shape, and is erected so as to protrude on the post erecting surface 105 in such a positional relationship that the central axis X is substantially orthogonal (including orthogonal) to the post erecting surface 105. Is done. Each battery post 102 is typically tapered such that its diameter decreases as it advances toward the tip end in the axial direction. That is, each battery post 102 has a tapered shape in which the outer diameter at the distal end is smaller than the outer diameter at the proximal end. One of the pair of battery posts 102 (here, the battery post 102 on the right side in FIG. 4) constitutes an anode, and the other (here, the battery post 102 on the left side in FIG. 4) constitutes a cathode. .

  The FL unit 1 according to the present embodiment holds the fusible link 3 on the protector 4 to which the battery terminal 2 is mounted, and is elastically deformable with the spring body 51 and the spring body 51 as a locking position. The protector 4 is locked onto the post standing surface 105 by the locking mechanism 5 having the linear member 52 that is supported by the protector 4 so as to be movable between the release position and the battery 100 to be properly assembled. This is to ensure the sex. Hereafter, each structure of FL unit 1 is demonstrated in detail with reference to each figure.

  In the following description, a case where the FL unit 1 is applied to the battery post 102 on the anode side will be described, but the present invention is not limited to this. The battery 100 of the present embodiment is a so-called EN standard (European Norm (European Standards)) battery, but the application target of the FL unit 1 is not limited thereto.

  Specifically, as shown in FIGS. 1 and 2, the battery terminal 2 is attached to the battery post 102, so that the battery 100 and the terminal of the electric wire on the main body side of the vehicle or the like on which the battery 100 is mounted are attached. It is a part for electrically connecting a provided metal fitting such as a terminal (here, a connecting terminal 6 described later also used as a connecting bus bar). The battery terminal 2 includes a main body portion 21, a stud bolt 22, and a tightening portion 23. The main body 21 is integrally formed with an annular portion 21a, a bolt holding portion 21b, and the like by, for example, press bending of a conductive metal plate. The annular portion 21a is formed with a post insertion hole 21c into which the battery post 102 is inserted and a slit 21d continuous with the post insertion hole 21c. The post insertion hole 21c is formed in a substantially circular shape and corresponds to the taper of the battery post 102 described above on the inner peripheral wall surface so that each inner peripheral surface is in contact with the battery post 102 in a state where the battery post 102 is inserted. It has a taper. The bolt holding portion 21b is, for example, a portion that holds the stud bolt 22 by being bent while the shaft portion 22a of the stud bolt 22 is inserted into the bolt insertion hole 21e. The stud bolt 22 has electrical conductivity, and is held by the bolt holding portion 21b, so that the shaft portion 22a exposed from the bolt insertion hole 21e is a metal fitting such as a terminal provided at the end of the electric wire, which will be described later. The connecting terminal 6 is electrically connected. The fastening portion 23 fastens the annular portion 21a to the battery post 102 in a state where the battery post 102 is inserted into the post insertion hole 21c. The tightening portion 23 includes, for example, a bolt and a nut, and is assembled to the main body portion 21 in such a positional relationship that the bolt crosses the slit 21d. Then, the tightening portion 23 is fastened to the battery post 102 by tightening the annular portion 21 a by screwing a nut into a tip portion of the bolt.

  As shown in FIGS. 1, 2, and 5, the fusible link 3 is connected to the battery terminal 2, and a fusible body (fuse) 31 c is blown when an overcurrent flows. The fusible link 3 includes a fusible element 31 provided with a fusible element 31 c, a stud bolt 32 connected to the fusible element 31, and a resin housing (block) 33 that supports the fusible element 31. Consists of.

  The fusible element 31 is a conductive plate-like conductor and is constituted by a metal bus bar. The fusible element 31 includes a power supply side terminal 31a connected to the battery terminal 2 via the connecting terminal 6, the stud bolt 32, etc., a plurality of load side terminals 31b connected to the load terminal, a power supply side terminal 31a, The fusible body 31c provided to the load side terminal 31b is formed in a flat plate shape and is bent so that a part of the load side terminal 31b has a bent portion. Each fusible body 31c connects the power supply side terminal 31a and each load side terminal 31b to each other. Each fusible body 31c has, for example, a configuration in which a low melting point metal chip is welded to a band-shaped conductive portion with a narrow width, and melts when an overcurrent flows, thereby blocking a corresponding current path. Here, the overcurrent of the fusible body 31c is, for example, a current exceeding a preset rating. That is, each fusible body 31c is melted when a current exceeding a preset rating flows. The rated current of each fusible body 31c is determined according to the current of the circuit to be protected. Each of the power supply side terminal 31a and each load side terminal 31b is provided with a bolt mounting hole and a connector connection shape. For example, a stud bolt 32 is joined to the bolt mounting hole.

  Each stud bolt 32 has conductivity, and a load terminal of the external circuit and the battery terminal 2 are electrically connected. Here, in the fusible link 3, among the plurality of stud bolts 32, a stud bolt 32A provided on the power supply side terminal 31a is electrically connected to the battery terminal 2 via a connecting terminal 6 described later.

  The housing 33 is a block-shaped body that is formed of an insulating resin material and supports and covers the fusible element 31 and the stud bolt 32. In the fusible link 3 of the present embodiment, for example, a fusible element 31 and a stud bolt 32 are embedded and integrated in the housing 33 by insert molding or the like.

  The fusible link 3 is constituted by the fusible element 31, the stud bolt 32, and the housing 33, and has a main body portion 3A formed in a substantially rectangular box shape as a whole, and a shaft that hangs down from the main body portion 3A. And a drooping portion 3B that protrudes downward in the direction (typically downward in the vertical direction). The fusible link 3 is provided on the main body 3A so that two stud bolts 32 protrude in the axial direction. One of the stud bolts 32 provided on the main body 3A is a stud bolt 32A provided on the power supply side terminal 31a. In addition, the fusible link 3 is provided on the hanging portion 3B so that three stud bolts 32 protrude in the second width direction. The two stud bolts 32 (stud bolt 32A) of the main body portion 3A are provided so as to be offset toward one side in the first width direction. Further, the fusible link 3 is provided with an opening 33a at a position where the fusible body 31c can be visually observed in the housing 33, and a detachable lid 33b is provided at the opening 33a.

  The fusible link 3 has a pair of locking protrusions 33 c on the housing 33. The pair of locking projections 33c are portions that are locked and held by a protector 4 described later. The pair of locking projections 33 c are formed at positions opposite to each other in the first width direction, one at each end of the housing 33 in the first width direction. The pair of locking projections 33c are the outer surfaces of the end portions of the upper side in the first width direction of the housing 33 (on the opposite side to the side where the hanging portion 3B hangs down, typically the upper side in the vertical direction). Projecting outward (away from each other) along the first width direction.

  As shown in FIGS. 1, 2, 6, 7, 8, 9, 10, and 11, the protector 4 is interposed between the lid member 104 of the battery housing 101 and the battery terminal 2. This is a member for holding the battery terminal 2 and the fusible link 3 on the post standing surface 105. The protector 4 includes a mounting portion 41, a holding portion 42, and a locking mechanism support portion 43, which are integrally formed of an insulating resin material having corrosion resistance (anticorrosion function) against battery liquid. . The protector 4 is adjacent to the mounting portion 41, the holding portion 42, and the locking mechanism support portion 43 in this order from the battery post 102 side to be attached along the first width direction in a state where the protector 4 is assembled on the post standing surface 105. And connected together.

  As shown in FIGS. 1 and 2, the mounting portion 41 is a portion where the battery terminal 2 can be mounted, in other words, a portion where the battery terminal 2 is mounted. The mounting portion 41 mounts the battery terminal 2 at a position where it can be fastened to the battery post 102. The mounting portion 41 is positioned on the side opposite to the side from which the shaft portion 22a of the stud bolt 22 of the battery terminal 2 protrudes, and the battery terminal 2 is mounted thereon. The mounting portion 41 is interposed between the post standing surface 105 and the battery terminal 2 in a state where the battery terminal 2 is fastened to the battery post 102. The mounting portion 41 is formed in a substantially rectangular plate shape as a whole, and has a housing recess 41a (see FIG. 1) for housing the battery terminal 2 and an insertion hole 41b (see FIG. 1) into which the battery post 102 is inserted. The housing recess 41 a is formed in a recess shape in accordance with the shape of the battery terminal 2. In the housing recess 41a, the annular portion 21a and the bolt holding portion 21b of the battery terminal 2 are arranged along the second width direction, and the bolt holding portion 21b is outside the second width direction of the annular portion 21a (the side surface of the casing described later). The battery terminal 2 is formed so as to be accommodated in a positional relationship located on the side). The mounting portion 41 serves as a base portion in which a plate-like portion constituting the bottom portion of the housing recess 41 a is interposed between the post standing surface 105 and the battery terminal 2.

  The mounting portion 41 is provided with a locking claw for locking the battery terminal 2 in the housing recess 41a, and an insertion hole 41b into which the battery post 102 is inserted is formed in the housing recess 41a. The insertion hole 41b is formed in a substantially circular shape centered on the central axis X. The insertion hole 41b is formed at a position facing the post insertion hole 21c of the battery terminal 2 in the axial direction in a state where the battery terminal 2 is housed and locked in the housing recess 41a. The insertion hole 41b is formed sufficiently larger than the outer diameter of the battery post 102 in consideration of tolerances allowed for the battery 100 or the like. The battery terminal 2 has an annular wall portion 21f (see FIG. 8) protruding from the inner peripheral wall surface of the post insertion hole 21c, and is housed and locked in the housing recess 41a of the mounting portion 41. The annular wall portion 21 f is also locked in the housing recess 41 a by fitting into the insertion hole 41 b of the mounting portion 41. The mounting portion 41 is formed in a size and shape that can be placed in a rectangular recess 106a that constitutes the recess 106 of the post standing surface 105 in a state where the battery post 102 is inserted into the insertion hole 41b. The mounting portion 41 may be configured to include a post insertion notch through which the battery post 102 can penetrate instead of the insertion hole 41b.

  And the mounting part 41 has also the terminal cover 41c adjacent to the accommodation recessed part 41a. The terminal cover 41c is connected to a portion where the housing recess 41a is formed through a hinge or the like so as to be opened and closed, covers the annular portion 21a of the battery terminal 2 housed in the housing recess 41a, and is axially On the other hand, the battery terminal 2 is held between the housing recess 41a. The terminal cover 41c is locked to a portion where the storage recess 41a is formed in a state where the battery terminal 2 is held between the terminal cover 41c and the storage recess 41a via a locking claw or the like. The terminal cover 41c has a substantially semicircular cutout 41d corresponding to the shape of the battery post 102 at a position facing the insertion hole 41b in the axial direction with the battery terminal 2 held between the terminal recess 41a. It is formed. Note that the terminal cover 41 c may be formed separately from the mounting portion 41.

  As shown in FIGS. 1 and 2, the holding portion 42 is a portion that is connected to the mounting portion 41 and holds the fusible link 3 on the post standing surface 105. The holding portion 42 includes a bottom portion 42a (see FIGS. 1 and 8) formed in a substantially rectangular plate shape, and a side wall portion 42b standing so as to surround the periphery of the bottom portion 42a. And formed into a tray shape (dish shape). The bottom surface 42a is a receiving surface 42c (see FIG. 1 and the like) on which the fusible link 3 is placed on the upper surface in the axial direction. The side wall portion 42b is axially upper so as to surround three sides of the bottom portion 42a, that is, in a state where the battery terminal 2 is assembled to the battery post 102 together with the mounting portion 41 (hereinafter may be referred to as “assembled state”). , Standing up so as to protrude upward in the vertical direction. The side wall portion 42b is provided on both sides of the bottom portion 42a in the first width direction and on one side in the second width direction, and the other side in the second width direction, here, the side positioned on the connection recess 106c side in the assembled state It is open. In the following description, the side where the connection recess 106c is located in the second width direction, here, the side where the side wall portion 42b opens in the assembled state may be referred to as the “case side surface side in the second width direction”. In the holding portion 42, an accommodation space portion 42 d (see FIG. 1 and the like) for accommodating and holding the fusible link 3 is partitioned by the bottom portion 42 a and the side wall portion 42 b. The accommodation space 42d opens in the axial upper side (vertical upper side) in a state where the protector 4 is assembled on the post standing surface 105 of the battery 100. The accommodation space portion 42d is formed in a size and shape into which the main body portion 3A of the fusible link 3 is fitted.

  In addition, as shown in FIGS. 1, 2, 6, and 7, the holding portion 42 has a first locking claw at an axially upper end portion (an upper end portion in the vertical direction in the assembled state) of the side wall portion 42b. A portion 42e and a second locking claw portion 42f are formed. The first locking claw portion 42e is formed on the side wall portion 42b located on the opposite side to the mounting portion 41 side in the first width direction, and the second locking claw portion 42f is on the mounting portion 41 side in the first width direction. Is formed on the side wall portion 42b. The first locking claw portion 42e and the second locking claw portion 42f are formed in a hook shape or a hook shape in which the distal end portion of the side wall portion 42b is bent toward the accommodation space portion 42d, and the fusible link 3, Here, the main body 3A can be locked. The first locking claw portion 42e and the second locking claw portion 42f are formed at positions facing each other in the first width direction. That is, the second locking claw portion 42f faces the first locking claw portion 42e across the receiving surface 42c with respect to the first width direction, and the fusible link 3 and the battery terminal from the first locking claw portion 42e. 2 is located on the connection portion side (connection portion side with a connecting terminal 6 described later). The first locking claw portion 42e and the second locking claw portion 42f can lock the locking projections 33c formed at the respective ends in the first width direction of the main body portion 3A of the fusible link 3. Formed in position. The holding portion 42 is a first locking claw in a state where the main body portion 3A of the fusible link 3 is located in the accommodation space portion 42d and the hanging portion 3B is positioned and fitted so as to hang from the opening of the side wall portion 42b. The portion 42e and the second locking claw portion 42f oppose each locking projection 33c of the fusible link 3 in the axial direction, and the fusible link 3 can be locked (locked) together with the locking projection 33c. . The first locking claw portion 42e, the second locking claw portion 42f, and the respective locking projections 33c are shafts caused by tolerance or the like in a state where the fusible link 3 is fitted to the holding portion 42. Some clearance in the direction is allowed. Further, the fusible link 3 and the holding portion 42 are separated from the first locking claw portion 42e, the second locking claw portion 42f, and the locking projections 33c, respectively, on the back side of the hanging portion 3B (the housing in the second width direction). It may be engaged with each other via a locking mechanism or the like.

  Further, as shown in FIG. 8, the holding portion 42 has a bulging portion 42g on the lower surface in the axial direction of the bottom portion 42a, that is, on the surface opposite to the receiving surface 42c. The bulging part 42g is located on the side where the opening of the side wall part 42b is formed on the lower surface in the axial direction of the bottom part 42a, that is, on the connection concave part 106c side (the housing side surface side in the second width direction) in the assembled state It forms along the 1st width direction in the edge part of the side to do. The bulging portion 42g is formed in a substantially rectangular parallelepiped shape so as to protrude from the lower surface in the axial direction of the bottom portion 42a toward the lower side in the axial direction. The bulging portion 42g is formed in a size and shape that can be disposed in the connection recess 106c that constitutes the recess 106 of the post standing surface 105 in the assembled state.

  The holding portion 42 of the present embodiment configured as described above is formed integrally with the mounting portion 41 so as to be adjacent to the mounting portion 41 in the first width direction. The holding portion 42 extends downward in the vertical direction so that the side wall portion 42b on the mounting portion 41 side corresponds to the step formed by the rectangular recess 106a on the post standing surface 105, and is mounted at the lower end portion of the side wall portion 42b. Continuing with the part 41. The holding portion 42 is configured such that when the protector 4 is inserted into the insertion hole 41b of the mounting portion 41 and the battery terminal 2 is assembled to the battery post 102 together with the mounting portion 41, the mounting portion 41 has a rectangular recess. The bulging part 42g located in 106a is mounted on the post standing surface 105 in such a positional relationship that it is located in the connection concave part 106c. In this assembled state, at least a part of the holding portion 42 is positioned on the post standing surface 105, and the fusible link 3 is placed and held on the post standing surface 105. In the assembled state, the holding portion 42 is placed with the back side of the bottom portion 42 a (the side opposite to the receiving surface 42 c and the accommodation space portion 42 d) in contact with the post standing surface 105. Therefore, the protector 4 receives the load of the fusible link 3 on the post standing surface 105 via the holding portion 42.

  As shown in FIGS. 1, 2, 9, 10, and 11, the locking mechanism support portion 43 is a portion that is connected to the holding portion 42 and is provided with a locking mechanism 5 to be described later and supports the same. The locking mechanism support portion 43 is connected to the holding portion 42 on the opposite side of the mounting portion 41. The locking mechanism support portion 43 is formed in a substantially rectangular plate shape and connected to the holding portion 42, and a shaft portion receiving portion 43b that receives a rotation shaft portion 52a of the linear member 52 described later. And a supported portion receiving portion 43c for receiving a supported portion 51b of the spring body 51, which will be described later, are integrally formed. The plate-like base portion 43a is connected to the opposite side of the mounting portion 41 from the bottom portion 42a of the holding portion 42 with respect to the first width direction. The plate-like base portion 43a is formed on the opposite side of the bottom portion 42a across the side wall portion 42b of the holding portion 42, that is, on the outside of the accommodation space portion 42d. The bulging portion 42g of the holding portion 42 described above extends to the lower side in the axial direction of the plate-like base portion 43a. The shaft portion receiving portion 43b is a portion that rotatably supports a rotation shaft portion 52a of the linear member 52 described later on the plate-like base portion 43a. The shaft receiving portion 43b is formed in a recessed shape at the end portion located on the side surface of the housing in the second width direction in the assembled state in the plate-like base portion 43a. The shaft receiving portion 43b extends in the first width direction as a recess capable of accommodating the rotation shaft portion 52a, and is a locking claw for locking the rotation shaft portion 52a accommodated in the recess in the recess. A portion 43d is included. The supported portion receiving portion 43c is a portion that supports a supported portion 51b of a spring body 51 described later on the plate-like base portion 43a. The supported portion receiving portion 43c is formed via a stepped portion on the opposite side of the housing side surface of the shaft portion receiving portion 43b in the second width direction.

  As shown in FIGS. 1, 2, 9, 10, 11, and 12, the locking mechanism 5 locks the protector 4 configured as described above on the post standing surface 105. is there. The locking mechanism 5 of the present embodiment includes a spring body 51 formed so as to be elastically deformable, and a linear member 52 that supports the spring body 51 on the protector 4.

  The spring body 51 is formed so as to be elastically deformable, and a locking portion 51 a that can be locked to the battery housing 101 is provided at the tip. The spring body 51 is formed in a spiral shape with the supported portion 51b supported by the linear member 52 as a base end portion, and a locking portion 51a is provided at a distal end portion outside the spiral shape. Here, the spring body 51 includes a locking portion 51a, a supported portion 51b, a first extending portion 51c, a first bent portion 51d, a second extending portion 51e, and a second bent portion 51f. The third extending portion 51g is included. The spring body 51 is formed by, for example, press-bending a plate-like metal plate so that the locking portion 51a, the supported portion 51b, the first extending portion 51c, the first bent portion 51d, and the second extending portion. 51e, the 2nd bending part 51f, the 3rd extension part 51g, etc. are integrally formed, and are formed in a spiral shape by these.

  The locking portion 51 a is a portion locked to the battery casing 101, and is one end of the spring body 51 (on the lower side in the axial direction in a state where the protector 4 is assembled on the post standing surface 105 of the battery 100. Is formed by bending a hook shape or a hook shape. The locking portion 51 a is locked to the lower end surface in the axial direction of the edge portion of the lid member 104 in the battery housing 101. Here, the locking portion 51a has a tip portion that is bent to the side opposite to the side surface of the housing in the second width direction and is cracked to be bifurcated. The supported portion 51b is a portion supported by the linear member 52, and is formed by bending the other end of the spring body 51 so as to be folded back into a cylindrical shape. In the supported portion 51b, a part of the linear member 52 is inserted inside the cylindrical shape. The first extending part 51c is a part extending along the second width direction from the supported part 51b. The first bent portion 51d is a portion that is folded back from the first extending portion 51c toward the supported portion 51b along the second width direction. Here, the first bent portion 51d is folded back in a substantially semicircular arc shape on the upper side in the axial direction from the end of the first extending portion 51c opposite to the supported portion 51b. The second extending portion 51e is a portion that extends in parallel with the first extending portion 51c from the first bent portion 51d. Here, the second extending portion 51e extends from the first bent portion 51d toward the side surface of the housing along the second width direction, and is supported on the axially upper side of the supported portion 51b and the first extending portion 51c. Located in. The second bent portion 51f is a portion that is folded back from the second extending portion 51e toward the supported portion 51b on the opposite side of the first bent portion 51d across the supported portion 51b. Here, the second bent portion 51f is folded back in a substantially quarter arc from the end of the second extending portion 51e opposite to the first bent portion 51d to the lower side in the axial direction. The third extending part 51g is a part that extends along the axial direction from the second bent part 51f and constitutes a tip part where the locking part 51a is provided. Here, the third extending portion 51g extends toward the lower side in the axial direction, and the end portion on the lower side in the axial direction constitutes the locking portion 51a. In this manner, the spring body 51 is formed in a spiral shape with the supported portion 51b supported by the linear member 52 as a base end portion, and a locking portion 51a is provided at the distal end portion of the spiral shape. Here, the supported portion 51b is folded back in a cylindrical shape from the first extending portion 51c to the opposite side of the first bent portion 51d, and the connecting portion 52b of the linear member 52 is inserted inside.

  The linear member 52 is rotatably supported by the locking mechanism support portion 43 of the protector 4 and holds the spring body 51 between the locking position (see FIG. 9 and the like) and the release position (see FIG. 12 and the like). It is supported by the locking mechanism support part 43 so as to be movable. Here, the linear member 52 moves the spring body 51 between the locking position and the release position as the lever portion 52c rotates. Here, the locking position of the spring body 51 is a position where the locking portion 51a and the battery casing 101 are locked, as shown in FIG. On the other hand, the release position of the spring body 51 is a position where the locking between the locking portion 51a and the battery casing 101 is released, as shown in FIG. The spring body 51 is positioned so as to protrude toward the side surface of the casing in the second width direction at the release position, and is positioned by being pulled toward the opposite side of the casing side surface in the second width direction at the locking position.

  The linear member 52 is rotatably supported by the locking mechanism support portion 43 of the protector 4, and includes a rotation shaft portion 52 a that forms a rotation axis X <b> 1 of the linear member 52, a rotation shaft portion 52 a, and a spring body 51. And a lever portion 52c extending from the connecting portion 52b. The linear member 52 is formed, for example, in a rod shape having a bend by a resin material or the like in which the rotation shaft portion 52a, the connecting portion 52b, and the lever portion 52c are integrally formed.

  The rotation shaft portion 52a is a portion formed in a substantially cylindrical shaft shape. The rotation shaft portion 52a is supported in the shaft portion receiving portion 43b by fitting in the shaft portion receiving portion 43b formed as a recess and being locked by the locking claw portion 43d. The rotation shaft portion 52a is rotatable around the rotation axis X1 along the first width direction while being supported in the shaft portion receiving portion 43b. The connecting portion 52b includes a shaft portion 52d that is formed in a substantially cylindrical shaft shape and is inserted inside the supported portion 51b of the spring body 51, and a connecting portion 52e that connects the rotating shaft portion 52a and the shaft portion 52d. Consists of. The connecting portion 52e connects the shaft portion 52d and the rotation shaft portion 52a in a positional relationship such that the shaft portion 52d and the rotation shaft portion 52a are parallel to each other. That is, the shaft portion 52d extends along the first width direction, in other words, along the rotation axis X1. The rotation shaft portion 52a, the shaft portion 52d of the connecting portion 52b, and the connection portion 52e are formed in a substantially U shape as a whole. The lever part 52c is a part extending from the shaft part 52d of the connecting part 52b. The lever portion 52c extends from the end portion of the shaft portion 52d opposite to the connection portion 52e side to the opposite side of the connection portion 52e along the extending direction of the connection portion 52e, and the tip portion is bent. As a result, a grip portion 52f is formed to facilitate pinching with a finger.

  In the locking mechanism 5 configured as described above, the portion corresponding to the supported portion 51b of the spring body 51 is folded back so as to surround the shaft portion 52d of the connecting portion 52e of the linear member 52. The linear member 52 is assembled to the spring body 51 in a state where the shaft portion 52d of the connection portion 52e is inserted inside 51b. The locking mechanism 5 is configured such that the rotating shaft portion 52a of the linear member 52 is fitted into the shaft portion receiving portion 43b in a state where the linear member 52 is assembled to the spring body 51, and the locking claw portion 43d is used. By being locked, the linear member 52 is supported in the shaft receiving portion 43b of the locking mechanism support portion 43 so as to be rotatable around the rotation shaft portion 52a together with the spring body 51. Then, the locking mechanism 5 moves the spring body 51 in FIGS. 9, 10, and 11 in accordance with the rotation of the lever portion 52c having the rotation shaft portion 52a of the linear member 52 as the rotation center and the connection portion 52b. It can be moved between the locking position shown and the release position shown in FIG.

  The lever portion 52c of the linear member 52 of the present embodiment is related to the protrusion amount D2 from the spring body 51 when the spring body 51 shown in FIG. It is relatively larger than the protruding amount D1 from the spring body 51 in the stop position. More specifically, when the spring body 51 is in the locking position, the lever portion 52c protrudes from the spring body 51 by a protrusion amount D1 on the side opposite to the side surface of the casing in the second width direction. On the other hand, in a state where the spring body 51 is in the release position, the lever portion 52c protrudes from the spring body 51 by a protrusion amount D2 on the upper side in the axial direction that is relatively easy to see.

  The connection terminal 6 is for electrically connecting the fusible link 3 and the battery terminal 2 as shown in FIGS. Here, in the FL unit 1, the mounting portion 41 of the protector 4 is positioned in the rectangular recess 106 a with the battery terminal 2 assembled to the battery post 102 together with the mounting portion 41, and the bulging portion 42 g of the holding portion 42. Is placed on the post standing surface 105 so as to be positioned in the connection recess 106c. When the FL unit 1 is assembled, the main body 3A of the fusible link 3 is positioned on the upper side in the axial direction of the post standing surface 105 and the hanging portion 3B is positioned on the side of the casing in the second width direction. The two stud bolts 32 of the main body portion 3A including the stud bolt 32A provided on the side terminal 31a are offset to the mounting portion 41 side. The connecting terminal 6 connects the stud bolt 32 </ b> A of the fusible link 3 and the stud bolt 22 of the battery terminal 2 arranged in this way.

  The connection terminal 6 is formed as a plate-like bus bar by a conductive metal plate. The connection terminal 6 of this embodiment has a shaft portion insertion hole 6a into which the shaft portion 22a of the stud bolt 22 of the battery terminal 2 is inserted, and a shaft portion insertion hole 6b into which the shaft portion 32a of the stud bolt 32 is inserted. At the same time, the portion between the shaft portion insertion hole 6a and the shaft portion insertion hole 6b is bent so as to correspond to the step formed by the rectangular recess 106a on the post standing surface 105. Here, the shaft portion insertion hole 6a is formed in a long hole shape to absorb tolerance. In the connection terminal 6 of this embodiment, a terminal fitting 6c such as a terminal provided at the end of the electric wire on the main body side of the vehicle or the like is integrally formed on the shaft insertion hole 6a side. The connecting terminal 6 is fastened to the shaft portion 22a by screwing a nut or the like into the shaft portion 22a in a state where the shaft portion 22a of the stud bolt 22 is inserted into the shaft portion insertion hole 6a. When the shaft portion 32a of the stud bolt 32A is inserted, a nut or the like is screwed into the shaft portion 32a to be fastened to the shaft portion 32a. Thereby, the connection terminal 6 can electrically connect the stud bolt 22 and the stud bolt 32 </ b> A to each other, and can electrically connect the fusible element 31 of the fusible link 3 and the battery terminal 2. In addition, the connecting terminal 6 is crimped by connecting the electric wire on the main body side of the vehicle or the like (for example, an electric wire connected to a starter or the like) to the terminal fitting 6c. 1 and 2 also illustrate a terminal 107 (for example, a terminal for connecting to an alternator) connected to a stud bolt 32A other than the stud bolt 32A of the two stud bolts 32 of the main body 3A. .

  As shown in FIGS. 1, 2, 3, and 13, the cover 7 is attached to the protector 4 and covers the fusible link 3. The cover 7 is formed of an insulating resin material. The cover 7 has a ceiling portion 7a formed in a substantially rectangular plate shape and a side wall portion 7b erected so as to surround the periphery of the ceiling portion 7a, and these are integrally formed in a lid shape. The The side wall portion 7b is erected so as to protrude downward in the vertical direction in the assembled state in the axially lower side so as to surround the four sides of the ceiling portion 7a. The side wall portions 7b are provided on both sides in the first width direction and both sides in the second width direction of the ceiling portion 7a. In the cover 7, a cover space portion 7 c (see FIG. 13) for covering the entire protector 4 including the mounting portion 41, the holding portion 42, and the locking mechanism support portion 43 is partitioned by the ceiling portion 7 a and the side wall portion 7 b. The cover space portion 7c opens in the axially lower side (vertical lower side) in the assembled state. The cover 7 is formed in a size and shape that can cover the entire protector 4 from the fusible link 3 side, that is, from the upper side in the axial direction. The cover 7 is such that the side wall 7b on the side covering the hanging part 3B of the fusible link 3, that is, the side wall 7b on the side surface of the housing in the second width direction is longer in the axial direction than the other side wall 7b. Is formed. The cover 7 can cover the entire fusible link 3 including the hanging portion 3B. In the cover 7, a first locking recess 7 d (see FIG. 13 and the like) is formed on the side wall portion 7 b on one side in the first width direction, and a second locking recess 7 e (see FIG. 13 and the like) is formed on the ceiling portion 7 a. Is done. The first locking recess 7d and the second locking recess 7e are formed at positions facing each other in the first width direction. 7 d of 1st latching recessed parts and the 2nd latching recessed part 7e are the 1st cover latching claw part 4a (refer FIG. 1 etc.) formed in the protector 4, respectively, and the 2nd cover latching claw part 4b (refer FIG. 1 etc.). ) Can be locked. The 1st cover latching claw part 4a and the 2nd cover latching claw part 4b are located so that the holding | maintenance part 42 may be pinched | interposed along the 1st width direction. In the cover 7, the first locking recess 7d is locked to the first cover locking claw 4a, and the second locking recess 7e is locked to the second cover locking claw 4b. The protector 4 is attached to the protector 4 so as to cover the entire protector 4, and consequently the battery terminal 2, the fusible link 3, and the engaging mechanism 5 from the upper side in the axial direction. The cover 7 has a structure in which a part of the ceiling part 7a and the side wall part 7b can be opened and closed via a hinge in order to connect a booster cable or the like to the anode of the battery 100, for example.

  More specifically, as shown in FIGS. 13, 14 and 15, the first locking recess 7d is formed in the arm member 7f, and the second locking recess 7e is formed in the protruding piece 7g. The arm member 7f is formed on the one side wall portion 7b in the first width direction so as to protrude downward in the axial direction from the ceiling portion 7a. The protruding piece 7g is formed so as to protrude from the substantially central portion in the first width direction of the ceiling portion 7a toward the lower side in the axial direction. The arm member 7f and the protruding piece 7g are formed at positions facing each other in the first width direction. Furthermore, the arm member 7f and the projecting piece 7g are formed to face each other with a position where the holding portion 42 of the protector 4 is sandwiched in the first width direction when the cover 7 is attached to the protector 4.

  The arm member 7f includes a base portion 7h that protrudes downward in the axial direction from the ceiling portion 7a, and a release operation portion 7i that is folded back from the base portion 7h toward the upper side in the axial direction and supported by the base portion 7h. Is done. The base portion 7h and the release operation portion 7i are formed in a substantially rectangular plate shape. The release operation portion 7i is positioned on the outside of the base portion 7h with respect to the first width direction so as to overlap the base portion 7h, and is flexible so as to be able to approach and separate from the base portion 7h along the first width direction. ing. 7 d of 1st latching recessed parts are formed so that the cancellation | release operation part 7i may be penetrated along the 1st width direction. 7 d of 1st latching recessed parts are formed as a substantially rectangular recessed part which the 1st cover latching claw part 4a can fit and latch. The protruding piece 7g is formed in a substantially rectangular plate shape. The second locking recess 7e is formed so as to penetrate the protruding piece 7g along the first width direction. The 2nd latching recessed part 7e is formed as a substantially rectangular shaped recessed part which the 2nd cover latching claw part 4b can fit and latch.

  Further, the first cover locking claw portion 4a and the second cover locking claw portion 4b formed on the protector 4 sandwich the holding portion 42 along the first width direction as shown in FIGS. And is formed in a claw shape that projects along the first width direction. Here, the 1st cover latching claw part 4a is formed in the protrusion piece 4c, and the 2nd cover latching claw part 4b is formed in the side wall part 42b of the one side of a 1st width direction. The protruding piece 4c is formed at the other end of the protector 4 on the other side in the first width direction, here, the end on the side of the locking mechanism support 43, and protrudes upward in the axial direction from the plate-like base 43a. (See also FIG. 9 and the like). The protruding piece 4c is formed in a substantially rectangular plate shape. The 2nd cover latching claw part 4b is formed in the side wall part 42b located in the mounting part 41 side in a 1st width direction (refer also FIG. 1 etc.). The protruding piece 4c and the side wall portion 42b where the second cover locking claw portion 4b is formed are formed at positions facing each other in the first width direction. Furthermore, the protruding piece 4c and the side wall portion 42b where the second cover locking claw portion 4b is formed are formed so as to face each other at a position sandwiching the holding portion 42 of the protector 4 in the first width direction. The 1st cover latching claw part 4a and the 2nd cover latching claw part 4b protrude toward the same side along the 1st width direction. Here, the 1st cover latching claw part 4a protrudes in the 2nd cover latching claw part 4b side along the 1st width direction from the axial direction upper side edge part of the protrusion piece 4c. The 2nd cover latching claw part 4b protrudes on the opposite side to the 1st cover latching claw part 4a side along the 1st width direction from the axial direction upper end part of the side wall part 42b located in the mounting part 41 side. . That is, both the first cover locking claw portion 4a and the second cover locking claw portion 4b are formed so as to protrude toward the mounting portion 41 along the first width direction.

  The arm member 7f and the protruding piece 7g are located on the holding portion 42 side of the protruding piece 4c in a state where the cover 7 is attached to the protector 4, and the protruding piece 7g is formed on the side wall portion 42b (second cover). It is located on the mounting portion 41 of the side wall portion 42b) where the locking claw portion 4b is formed. In this state, the cover 7 has the first locking recess 7d formed in the arm member 7f locked in the first cover locking claw 4a, and the second locking recess 7e formed in the protruding piece 7g is the second. By being locked to the cover locking claw portion 4b, it is mounted on the protector 4 as described above. When the cover 7 is removed from the protector 4, the release operation portion 7 i of the arm member 7 f is pressed and bent by the finger or the like toward the base portion 7 h, so that the first locking recess 7 d and the first cover locking are performed. The engagement with the claw portion 4a is released, and in this state, the entire cover 7 is rotated with the second engagement recess 7e and the second cover engagement claw portion 4b side as a fulcrum. As a result, the cover 7 releases the locking at one location on the first locking recess 7d side with respect to the two locking locations of the first locking recess 7d and the second locking recess 7e. It can be removed from the protector 4 with a simple operation.

  In the FL unit 1 configured as described above, the fusible link 3 is fitted into the accommodating space portion 42d of the holding portion 42 of the protector 4, and the first locking claw portion 42e and the second locking claw portion 42f. Is engaged with the locking projection 33c of the housing 33 of the fusible link 3, whereby the fusible link 3 is locked and locked in the accommodating space 42d. In the FL unit 1, the battery terminal 2 is attached to the attachment portion 41 of the protector 4. In the FL unit 1, the battery post 102 is inserted into the insertion hole 41 b of the mounting portion 41 of the protector 4 and the post insertion hole 21 c of the battery terminal 2, and the mounting portion 41 is positioned in the recess 106. The protector 4 is assembled on the post standing surface 105 of the battery 100 together with the battery terminal 2 and the fusible link 3 in a positional relationship. More specifically, in the FL unit 1, the mounting portion 41 of the protector 4 is positioned in the rectangular recess 106 a in a state where the battery terminal 2 is assembled to the battery post 102 together with the mounting portion 41, and the holding portion 42 is expanded. The portion 42g is placed on the post standing surface 105 so as to be positioned in the connection recess 106c. The FL unit 1 can lock the protector 4 on the post standing surface 105 by the locking mechanism 5 and lock it. In this way, the FL unit 1 is such that at least a part of the protector 4 is positioned on the post standing surface 105 of the battery 100 and the fusible link 3 is placed and held on the post standing surface 105. Can do.

  As a result, the FL unit 1 holds the fusible link 3 on the post standing surface 105 of the battery casing 101 by the holding portion 42 connected to the mounting portion 41 of the protector 4, and the fusible link 3 is fusible on the post standing surface 105. Since the load acting on the battery terminal 2 from the FL unit 1 can be suppressed by receiving the load of the link 3, the load acting on the battery post 102 can be suppressed. Further, when it is difficult to secure a space for installing the FL unit 1 around the side surface side of the battery housing 101, the FL unit 1 has a post standing surface 105 (vertical top surface). ) Since the installation space can be secured and the fusible link 3 can be arranged on the upper side, the fusible link 3 can be appropriately provided.

  Here, as shown in FIG. 12, the locking mechanism 5 is configured such that the lever portion 52 c of the linear member 52 is raised to the side surface of the housing in the second width direction, so that the spring body 51 is a plate. The spring body 51 is the release position, with the axial base 43a located on the upper side in the axial direction and spaced apart on the side surface of the casing in the second width direction. The locking mechanism 5 is configured such that, in the release position, the locking portion 51 a of the spring body 51 is positioned away from the lower end surface in the axial direction of the edge of the lid member 104, and the locking portion 51 a and the battery casing 101 are locked. Is released, that is, the state where the protector 4 is locked on the post standing surface 105 is released. In the locking mechanism 5, the spring body 51 is set to the release position at the stage where the FL unit 1 is merely placed on the post standing surface 105.

  On the other hand, as shown in FIGS. 9, 10, and 11, the locking mechanism 5 is tilted by turning the lever portion 52 c of the linear member 52 to the side opposite to the housing side surface in the second width direction. By being in the state, the spring body 51 becomes a position close to the plate-like base portion 43a side, here, the supported portion 51b of the spring body 51 is supported on the supported portion receiving portion 43c. Is the locking position. At this time, the spring body 51 finally becomes the locking position while the locking portion 51a is pulled upward in the axial direction by the action of the rotating shaft portion 52a and the connecting portion 52b of the linear member 52. In the locking mechanism 5, the locking portion 51 a of the spring body 51 is locked to the lower end surface in the axial direction of the edge portion of the lid member 104 at the locking position, so that the locking portion 51 a and the battery housing 101 are connected. That is, the protector 4 is locked and locked on the post standing surface 105. As described above, the locking mechanism 5 is configured such that the FL unit 1 is placed on the post standing surface 105 and the spring body 51 is shifted from the release position to the locking position, whereby the locking portion 51a and the battery casing 101 are placed. The entire FL unit 1 including the protector 4 can be locked and locked on the post standing surface 105.

  At this time, the locking mechanism 5 elastically deforms the spring body 51 supported by the locking mechanism support portion 43 via the linear member 52 during the operation of moving the spring body 51 from the release position to the locking position. Thus, after the tolerance of the battery 100 and these components is absorbed, the locking portion 51a and the battery housing 101 are securely locked, and the protector 4 is locked on the post standing surface 105. Can do. More specifically, the spring body 51 absorbs axial tolerance by at least mainly the first bent portion 51d elastically deforming in the axial direction (see arrow A in FIG. 9), and mainly the second bent portion. The tolerance in the second width direction can be absorbed by the elastic deformation of 51f in the second width direction (see arrow B in FIG. 9).

  In addition, the locking mechanism 5 has a configuration in which the spring body 51 moves between the locking position and the release position as the lever portion 52c of the linear member 52 rotates, so that the position of the lever portion 52c is visually checked. By confirming with, it is possible to easily confirm the state of locking by the spring body 51.

  Then, after the battery terminal 2 is assembled to the battery post 102, the FL unit 1 connects the stud bolt 32A of the power source side terminal 31a of the fusible element 31 and the stud bolt 22 of the battery terminal 2 so as to connect to each other. 6, and bolts, nuts and the like of each part including the tightening part 23 are tightened. As a result, the battery terminal 2 is fastened to the battery post 102 and the battery terminal 2 and the fusible link 3 are electrically connected. In this way, the FL unit 1 is fixed on the post standing surface 105 at least at two locations of the locking mechanism 5 and the tightening portion 23 of the battery terminal 2. Then, after the terminal 107 and the like are further connected to the FL unit 1, the cover 7 is attached to the protector 4.

  Here, the battery terminal 2 and the fusible link 3 are assembled to the protector 4 and then the battery terminal 2 and the fusible link 3 and the protector 4 are assembled to the post standing surface 105. However, the present invention is not limited to this. The battery terminal 2 and the fusible link 3 may be assembled to the protector 4 after the protector 4 is assembled on the post standing surface 105.

  According to the FL unit 1 described above, the fusible link 3 that is connected to the battery terminal 2 and the fusible member 31c is blown when an overcurrent flows, and the battery terminal 2 is connected to the post standing surface 105 of the battery housing 101. A protector 4 having a mounting portion 41 mounted at a position where it can be fastened to the battery post 102 provided in the battery post 102, a holding portion 42 connected to the mounting portion 41 and holding the fusible link 3 on the post standing surface 105, and a protector And a locking mechanism 5 that locks 4 on the post standing surface 105. The locking mechanism 5 has a locking portion 51a that is formed to be elastically deformable and that can be locked to the battery casing 101 at the tip. The provided spring body 51 is supported by the protector 4 so as to be pivotable, and the latching portion 51a and the battery casing 101 are latched with the spring body 51 by pivoting. Movable between an unlocked position where the locking of the position and the locking portion 51a and the battery housing 101 is released and a linear member 52 for supporting the protector 4. The spring body 51 is formed in a spiral shape with the supported portion 51b supported by the linear member 52 as a base end portion, and a locking portion 51a is provided at the distal end portion of the spiral shape.

  Therefore, the FL unit 1 holds the fusible link 3 on the protector 4 to which the battery terminal 2 is mounted, and is elastically deformable between the spring body 51 and the spring body 51 between the locking position and the release position. The protector 4 is locked on the post standing surface 105 by a locking mechanism 5 having a linear member 52 that is movably supported between the protectors 4. Thereby, in the FL unit 1, the spring body 51 supported by the locking mechanism support portion 43 via the linear member 52 is elastically deformed during the operation of moving the spring body 51 from the release position to the locking position. Thus, after the tolerance of the battery 100 and these components is absorbed, the locking portion 51a and the battery housing 101 can be securely locked, and the protector 4 can be locked on the post standing surface 105. it can. At this time, the spring body 51 is formed in a spiral shape with the supported portion 51b supported by the linear member 52 as a base end portion, so that the spring property of the spring body 51 is appropriately ensured in a relatively space-saving manner. The tolerance of each part can be absorbed. As a result, the FL unit 1 can be properly assembled to the battery 100.

  Further, here, the FL unit 1 is configured such that the spring body 51 moves to the locking position and the release position as the lever portion 52c of the linear member 52 rotates, so that the position of the lever portion 52c is visually observed. By confirming with, it is possible to easily confirm the state of locking by the spring body 51. More specifically, according to the FL unit 1, the lever portion 52c has a protrusion amount D2 from the spring body 51 in a state where the spring body 51 is in the release position. The amount of protrusion D1 from the spring body 51 is relatively larger. Therefore, the FL unit 1 can make it easier to see the lever portion 52c more reliably when the spring body 51 is in the release position, and can more reliably confirm the state of locking by the spring body 51. For example, it can be easily confirmed that the protector 4 is locked on the post standing surface 105, and the efficiency and certainty of the assembling work can be improved.

  Further, according to the FL unit 1 described above, the spring body 51 intersects (orthogonally) the supported portion 51b and the first width direction along the rotation axis X1 of the linear member 52 from the supported portion 51b. A first extending portion 51c extending along the second width direction, a first bent portion 51d folded from the first extending portion 51c toward the supported portion 51b, and a second width from the first bent portion 51d. A second extending portion 51e extending in parallel with the first extending portion 51c along the direction, and the second extending portion 51e on the opposite side of the first bent portion 51d across the supported portion 51b. A second bent portion 51f folded back to the support portion 51b side, and an engaging portion 51a extending from the second bent portion 51f along the axial direction intersecting (orthogonal to) both the first width direction and the second width direction. And a third extending portion 51g constituting a tip portion provided, and at least a first bent 51d is a second bent portion 51f is elastically deformed in the axial direction is elastically deformed to the second width direction. Therefore, the FL unit 1 can be formed in a spiral shape with a more compact configuration without making the entire spring body 51 curved. In addition, the FL unit 1 absorbs the axial tolerance by at least mainly the first bent portion 51d of the spring body 51 being elastically deformed in the axial direction (see arrow A in FIG. 9), and mainly the spring. The second bent portion 51f of the body 51 is elastically deformed in the second width direction, so that the tolerance in the second width direction can be absorbed (see arrow B in FIG. 9).

  Further, according to the FL unit 1 described above, the supported portion 51b is folded back from the first extending portion 51c to the side opposite to the first bent portion 51d, and the linear member 52 is inserted inside. Therefore, the FL unit 1 can improve the workability when the spring body 51 is produced by bending a sheet metal, and, for example, compared to a case where the supported portion 51b is folded back to the first bent portion 51d side, Since the stroke until the first bent portion 51d is elastically deformed in the axial direction and the second extending portion 51e contacts the supported portion 51b can be made relatively large, the tolerance absorption width in the axial direction is relatively Can be wide.

  Further, according to the FL unit 1, the locking mechanism 5 can regulate the rotation of the battery terminal 2 around the battery post 102 as the spring body 51 comes into contact with the battery housing 101. Accordingly, since the FL unit 1 can integrally assemble the protector 4 and the battery terminal 2 to the battery 100, the spring body 51 provided on the protector 4 and constituting the locking mechanism 5 is connected to the battery terminal 102 with respect to the battery post 102. It can also be used as a restricting member for restricting the assembly angle of 2. That is, the FL unit 1 functions as a stopper in which the spring body 51 having the locking portion 51a functions as a stopper for restricting the rotation of the battery terminal 2 in the direction around the battery post 102 within a predetermined range. Since the allowable range of the assembly angle can be limited to a relatively narrow range, the assembly accuracy of the battery terminal 2 with respect to the battery post 102 can be improved. That is, since the FL unit 1 can be used as a so-called battery terminal stopper, for example, the manufacturing cost can be suppressed. Further, here, in the FL unit 1, the spring body 51 is positioned on the opposite side of the mounting portion 41 with the holding portion 42 in the first width direction, and the battery post 2 is fastened with the battery terminal 2 fastened. Since the position where the spring body 51 is locked relative to the rotation about the battery post 102 as a rotation center can be positioned relatively outside the rotation, the holding force against the rotation Can be secured relatively large.

  In addition, the spring body 51 demonstrated above is not restricted to said shape. An FL unit 201 as a fusible link unit according to Modification 1 shown in FIG. 16 includes a locking mechanism 205 instead of the locking mechanism 5, and the locking mechanism 205 replaces the spring body 51 with a spring body 251. Have. The spring body 251 includes a supported portion 251b instead of the supported portion 51b. The supported portion 251b of this modification is folded from the first extending portion 51c to the first bent portion 51d side, and the linear member 52 is inserted inside. Even in this case, the FL unit 201 can be formed in a spiral shape with a more compact configuration without making the entire spring body 251 curved, and at least the first bent of the spring body 251 is mainly formed thereon. The portion 51d is elastically deformed in the axial direction to absorb the axial tolerance, and the second bent portion 51f of the spring body 251 is mainly elastically deformed in the second width direction to absorb the tolerance in the second width direction. be able to.

  Moreover, the linear member 52 demonstrated above is not restricted to said shape. An FL unit 301 as a fusible link unit according to Modification 2 shown in FIG. 17 includes a locking mechanism 305 instead of the locking mechanism 5, and the locking mechanism 305 is replaced with a linear member 52. 352. Similar to the linear member 52, the linear member 352 of the present modified example includes a rotation shaft portion 52a and a connecting portion 52b, but does not include the lever portion 52c. The linear member 352 supports the spring body 51 on the protector 4 by the rotation shaft portion 52a and the connecting portion 52b so that the spring body 51 can be moved between the locking position and the release position with rotation. In this case, in the FL unit 301, when the spring body 51 is directly pinched or pressed, the spring body 51 moves between the locking position and the release position as the linear member 352 rotates. Even in this case, the FL unit 301 can be properly assembled to the battery 100. Furthermore, the FL unit 301 can reduce the number of processing steps of the linear member 352 and can contribute to the downsizing of the apparatus.

[Embodiment 2]
FIG. 18 is a perspective view illustrating a schematic configuration in the vicinity of the locking mechanism support portion of the fusible link unit according to the second embodiment. The fusible link unit according to the second embodiment is different from the first embodiment in that it mainly includes an urging unit. In the following, the same reference numerals are given to the same components as those in the above-described embodiment, and the overlapping description of the common configurations, operations, and effects is omitted as much as possible (the same applies hereinafter).

  An FL unit 401 as a fusible link unit according to the present embodiment shown in FIG. 18 includes a protector 404 in place of the protector 4, and the protector 404 includes the mounting portion 41, the holding portion 42, and the locking mechanism support described above. And an urging portion 444. The urging unit 444 urges the spring body 51 toward the release position. The urging portion 444 of the present embodiment is a resin plate spring that protrudes in the vicinity of the supported portion receiving portion 43c. The urging portion 444 is formed so that the base end portion is integrally formed with the supported portion receiving portion 43c, and the tip end portion protrudes toward the opposite side of the housing side surface in the second width direction in the axial direction. Formed. Here, the urging portion 444 is integrally formed of an insulating resin material together with the mounting portion 41, the holding portion 42, and the locking mechanism support portion 43, and is elastically deformed to the plate-like base portion 43 a of the locking mechanism support portion 43. Supported as possible. The urging portion 444 is interposed between the supported portion 51b of the spring body 51, the first extending portion 51c, and the plate-like base portion 43a.

  The biasing portion 444 configured as described above is deformed by being pressed toward the plate-like base portion 43a by the first extending portion 51c of the spring body 51 and the like in a state where the spring body 51 is located at the locking position. In this state, the urging portion 444 is in a state of urging the spring body 51 to the release position side. However, when the locking portion 51a is locked to the battery housing 101, the biasing portion 444 is moved toward the plate-like base portion 43a. The state where the spring body 51 is pressed and located at the locking position is maintained. When the latching portion 51a and the battery casing 101 are unlocked, the biasing portion 444 moves the spring body 51 to the release position side by biasing, and the spring body 51 is positioned at the release position. Let

  The FL unit 401 described above holds the fusible link 3 on the protector 404 to which the battery terminal 2 is mounted, and is elastically deformable, and the spring body 51 is released from the locking position. Since the protector 404 is locked onto the post standing surface 105 by the locking mechanism 5 having the linear member 52 that is movably supported between the positions, the battery 100 can be properly assembled. it can.

  Further, according to the FL unit 401 described above, the biasing portion 444 that biases the spring body 51 toward the release position is provided. Accordingly, the FL unit 401 can keep the spring body 51 on the release position side by the biasing force of the biasing portion 444 in a state where the locking portion 51a is not locked to the battery housing 101. It can be made easier to visually confirm that the locking portion 51a is not locked to the battery housing 101. As a result, in other words, the FL unit 401 can easily confirm, for example, that the protector 404 is locked on the post standing surface 105, and can improve the efficiency and reliability of the assembly work. Can do.

  The biasing portion 444 has been described as being integrally formed of a resin material together with the mounting portion 41, the holding portion 42, and the locking mechanism support portion 43, but is not limited thereto, and is formed separately from the protector 404. A metal spring or the like may be used, and the arrangement position is not limited to the above as long as the spring body 51 is biased toward the release position.

[Embodiment 3]
FIG. 19 is a partial cross-sectional view along the first width direction including the first locking claw portion of the fusible link unit according to the third embodiment. The fusible link unit according to the third embodiment is different from the first embodiment in that it mainly includes a lock piece.

  An FL unit 501 as a fusible link unit according to this embodiment shown in FIG. 19 includes a cover 507 instead of the cover 7. The cover 507 includes a lock piece 507 f in addition to the same configuration as the cover 7. The lock piece 507f is formed in a rib shape protruding from the ceiling portion 7a of the cover 507 toward the cover space portion 7c. The lock piece 507f extends along the axial direction. The lock piece 507f is the back surface of the side wall portion 42b on which the first locking claw portion 42e is formed in the state where the cover 507 is attached to the protector 4, here, the surface from which the first locking claw portion 42e protrudes. It is formed at a position that comes into contact with the opposite surface. The lock piece 507f regulates the fall of the side wall portion 42b by contacting the back surface of the side wall portion 42b where the first locking claw portion 42e is formed in a state where the cover 507 is attached to the protector 4.

  The FL unit 501 described above holds the fusible link 3 on the protector 4 to which the battery terminal 2 is mounted, and is elastically deformable with the spring body 51, and the spring body 51 is released from the locking position. Since the protector 4 is locked on the post standing surface 105 by the locking mechanism 5 having the linear member 52 that is movably supported between the positions, the battery 100 can be properly assembled. it can.

  Further, according to the FL unit 501 described above, the cover 507 is a side wall portion in which the first locking claw portion 42e for locking the fusible link 3 is formed in a state where the cover 507 is attached to the protector 4. A lock piece 507f that regulates the falling of the side wall portion 42b by contacting the back surface of the 42b is provided. Therefore, since the FL unit 501 can restrict the fall of the side wall portion 42b in which the first locking claw portion 42e is formed by the lock piece 507f, the first locking claw in a state where the fusible link 3 is locked. It can suppress that the part 42e remove | deviates from the fusible link 3 with the fall of the side wall part 42b. As a result, the FL unit 501 can more reliably hold the fusible link 3 to the protector 4 and can be more properly assembled to the battery 100.

  Note that the lock piece 507f is located on the distal end side of the turning locus when the cover 507 is removed from the protector 4, and does not hinder the rotation of the cover 507. Therefore, the cover 507 has the lock piece 507f. Even if it has, it can remove from the protector 4 appropriately.

  The fusible link unit according to the above-described embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope described in the claims.

  The FL unit 1 described above is described as being applied to the EN standard battery 100, but is not limited thereto, and may be applied to other standards, for example, JIS standard batteries or the like. The present invention may be applied to various batteries.

  The post standing surface 105 described above has been described as being formed on the upper surface in the vertical direction where the concave portion 106 is provided in the lid member 104 in a state where the battery 100 is mounted on a vehicle or the like. However, the battery 100 may be formed by a surface on the upper side in the vertical direction of the cover member 104 or may be formed by a surface other than the surface on the upper side in the vertical direction.

  In the above description, the FL unit 1 is described as being applied to the battery terminal 2 provided on the anode battery post 102. However, the present invention is not limited to this, and the battery terminal provided on the cathode battery post 102 is used. 2 may be applied.

  In the above description, the first direction is the first width direction, the second direction is the second width direction, and the third direction is the axial direction. The relationship between the first direction, the second direction, and the third direction may be different from the above.

1, 201, 301, 401, 501 FL unit (fusible link unit)
2 Battery terminal 3 Fusible link 4, 404 Protector (holding mechanism)
5, 205, 305 Locking mechanism 31c Soluble body 41 Mounting portion 42 Holding portion 51, 251 Spring body 51a Locking portion 51b, 251b Supported portion 51c First extending portion 51d First bent portion 51e Second extending portion 51f Second bent portion 51g Third extending portion 52, 352 Linear member 100 Battery 101 Battery housing 102 Battery post 105 Post standing surface 444 Energizing portion X1 Rotating axis

Claims (4)

A fusible link that melts when a battery terminal is connected and overcurrent flows,
A mounting portion for mounting the battery terminal in a position that can be fastened to a battery post provided on a post standing surface of the battery housing, and a fusible link that is connected to the mounting portion and holds the fusible link on the post standing surface. A holding mechanism having a holding portion;
A locking mechanism for locking the holding mechanism on the post standing surface,
The locking mechanism is formed to be elastically deformable and has a spring body provided with a locking portion that can be locked to the battery housing at the tip, and is rotatably supported by the holding mechanism and the spring. The body moves between a locking position where the locking portion and the battery housing are locked and a release position where the locking between the locking portion and the battery housing is released as the body rotates. A linear member supported by the holding mechanism as possible,
The spring body is formed in a spiral shape with a supported portion supported by the linear member as a base end portion, and the locking portion is provided at the distal end portion outside the spiral shape,
Fusible link unit. The spring body includes the supported portion, a first extending portion extending from the supported portion along a second direction intersecting with a first direction along the rotation axis of the linear member, A first bent portion that is folded back from the first extending portion toward the supported portion, and a second extension that extends from the first bent portion along the second direction in parallel with the first extending portion. A second bent portion that is folded back from the second extending portion to the supported portion side on the opposite side of the first bent portion across the supported portion, and the first bent portion to the first bent portion. And a third extending portion that extends along a third direction intersecting both the direction and the second direction and that constitutes the distal end portion provided with the locking portion, and at least the first bent The portion is elastically deformed in the third direction, and the second bent portion is elastically deformed in the second direction.
The fusible link unit according to claim 1. The supported portion is folded back from the first extending portion to the side opposite to the first bent portion, and the linear member is inserted inside,
The fusible link unit according to claim 2. An urging portion that urges the spring body toward the release position;
The fusible link unit according to any one of claims 1 to 3.

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