JP2019180230A - Electric connection box - Google Patents

Abstract

An object of the present invention is to easily connect a connection portion to an electric circuit while reliably preventing the connection portion, which is connected to a conductive member of a box body, from being exposed to the outside even when an upper cover is removed. To provide a new type of electrical junction box that can be used. A box main body accommodating an electric circuit, connection portions in which the electric circuit and an external electric wire are conductively connected, and a rotatably provided via a hinge portion in the box main body. A terminal cover 78 that can switch between an open state in which the connecting portion 72 is exposed to the outside and a closed state that covers the connecting portions 72 and 74. The terminal cover 78 covers the connecting portion 72 in the closed state. Has a notched opening 92, and the opening 92 is the electrical connection box 10 covered with a protruding wall 94 that protrudes from the box body 12 when the terminal cover 78 is closed. [Selection diagram] Fig. 1

Description

  The present disclosure relates to an electrical connection box including an electrical circuit to which a connection portion provided in an electric wire terminal is attached.

  2. Description of the Related Art Conventionally, an electrical junction box used in an automobile electrical system has a box body that accommodates a conductive member such as a bus bar that constitutes an electric circuit. There is known a structure in which a terminal mounting portion to which an L-shaped terminal provided in is mounted is provided. For example, Japanese Patent Laid-Open No. 2001-155798 (Patent Document 1) discloses a terminal mounting portion in which a stud bolt that conducts to a conducting member protrudes from the upper surface of a box body and an L-shaped terminal is bolted to the stud bolt. A structure with is proposed.

JP 2001-155798 A

  By the way, as for the L-shaped terminal, the connection part which has a bolt insertion hole is formed in the front-end | tip part of the metal piece bent in the substantially L shape as described in patent document 1, and the crimping provided in the base end part side It is set as the structure where the part was crimped | bonded to the core wire exposed to the electric wire terminal. Therefore, when the stud bolt is inserted into the bolt insertion hole and the connecting portion of the L-shaped terminal is fastened to the stud bolt protruding from the upper surface of the box body, the base end side of the L-shaped terminal or the crimped portion Is disposed on the surface of the peripheral wall portion of the box body and exposed, and there is a risk of current leakage due to water splashing. Therefore, as described in Patent Document 1, a structure is employed in which a bolt fastening terminal is attached to a synthetic resin terminal cover and the base end side of the bolt fastening terminal and the crimped portion are covered with the terminal cover.

  However, in the electrical connection box of the conventional structure, the connection part of the bolted terminal protrudes from the terminal cover and is exposed, so if the upper cover of the box body that covers the exposed part is removed or broken, it is exposed. There was a risk of electric shock by touching the part. Also, when assembling to a vehicle, the work of assembling the L-shaped terminal-attached electric wire into the box body with the terminal cover attached to the L-shaped terminal while the terminal cover is attached to the L-shaped terminal is complicated. It was. In addition, during vehicle maintenance, the terminal cover removed from the L-shaped terminal may be lost, and further improvements have been demanded.

  The present disclosure has been made in the background of the above-mentioned circumstances, and the problem to be solved is that even when the upper cover is removed, the outside of the connection portion conducted to the conduction member of the box body is exposed. An object of the present invention is to provide an electrical junction box having a novel structure capable of easily fastening a connection portion to an electrical circuit while reliably preventing it.

  An electrical connection box of the present disclosure is provided with a box body that houses an electrical circuit, a connection part in which the electrical circuit and an external electric wire are conductively connected, and a box body that is rotatably provided via a hinge part, A terminal cover that can be switched between an open state that exposes the connection part to the outside and a closed state that covers the connection part, and the terminal cover is an opening in which a side cover that covers the connection part in the closed state is cut away. The opening is an electrical junction box covered with a protruding wall protruding from the box body in a closed state of the terminal cover.

  According to the present disclosure, it is possible to improve both the workability of fastening of the connecting portion and the covering property at the time of mounting the electrical connection box on the vehicle or maintenance without fear of losing the terminal cover. Moreover, the risk of electric shock is avoided.

FIG. 1 is an exploded perspective view showing an electrical junction box according to Embodiment 1 of the present disclosure. FIG. 2 is an overall perspective view of the electrical junction box shown in FIG. FIG. 3 is a perspective view in which the upper cover is removed from the electrical junction box shown in FIG. 2 and the terminal cover is opened. 4 is a perspective view of the terminal cover shown in FIG. 3 in a closed state. FIG. 5 is a perspective view of the box body shown in FIG. 1 as viewed from another direction (without mounting various components). FIG. 6 is a plan view of the terminal cover shown in FIG. 7 is a side view of the terminal cover shown in FIG. 1 ((a) right side view, (b) left side view).

<Description of Embodiment of Present Disclosure>
First, embodiments of the present disclosure will be listed and described.
The electrical junction box of the present disclosure is:
(1) A box body that accommodates an electric circuit, a connection part in which the electric circuit and an external electric wire are conductively connected, and a box body that is rotatably provided via a hinge part. A terminal cover that can be switched between an open state that is exposed and a closed state that covers the connection portion, and the terminal cover has an opening in which a side cover that covers the connection portion in the closed state is cut out. The opening is an electrical junction box covered with a protruding wall portion protruding from the box body in a closed state of the terminal cover.

  According to the electrical connection box of the present disclosure, the terminal cover that covers the connection part is hinged to the box body, and the terminal cover is between the open state that exposes the connection part to the outside and the closed state that covers the connection part. It is freely rotatable around the hinge. Therefore, it is possible to open and close the terminal cover without fear of losing the terminal cover, and to switch between the open state and the closed state by a simple operation of rotating the terminal cover around the hinge portion. Compared to the case where the terminal cover is attached to the connection part and then the connection part is bolted as in the structure, the connection part can be bolted more easily. In addition, the workability of the connecting portion during maintenance is improved.

  In addition, the side cover of the terminal cover also reliably covers the wire connecting portion constituting the connecting portion, and problems such as current leakage due to water splashing are prevented in advance. Furthermore, it can be displaced to an open state and a closed state by a single rotation operation, and the workability is further improved.

  In addition, in the terminal cover hinged around the hinge portion, it is necessary to avoid the interference between the connection portion and the side cover in order to enable the side cover to be opened and closed by a single rotation operation. Yes, the side cover is provided with an opening to avoid such interference. From the opening, the rear side surface located near the hinge portion of both side surfaces of the connection portion is exposed to the outside. On the other hand, since the projecting wall portion that covers the opening portion in the closed state of the terminal cover projects from the box body, the exposure to the outside of the rear side surface of the connecting portion via the opening portion projects. It is avoided by being covered with a wall. As a result, it is possible to skillfully achieve both good workability in mounting the connecting portion and covering ability of the entire connected connecting portion.

(2) It is preferable that the said connection part has connected the L-shaped terminal provided in the terminal of the said external electric wire, and the said electric circuit. Thereby, the workability | operativity of the complicated operation | work which assembles | attaches the electric wire with an L-shaped terminal to a box main body in the state which attached the terminal cover to the conventional L-shaped terminal can be improved.

(3) It is preferable that the terminal cover has a lock portion, and the lock portion is detachably fitted to a locked portion provided in the box body. The terminal cover can be securely locked in the closed state. Therefore, it is possible to prevent the terminal cover from being inadvertently removed when the upper cover is removed during maintenance or the like, and to reduce the risk of electric shock more reliably.

<Details of Embodiment of Present Disclosure>
Specific examples of the electrical connection box of the present disclosure will be described below with reference to the drawings. In addition, this indication is not limited to these illustrations, is shown by the claim, and intends that all the changes within the meaning and range equivalent to the claim are included.

<Embodiment 1>
Hereinafter, Embodiment 1 of the present disclosure will be described with reference to FIGS. 1 to 4. The electrical connection box 10 includes a box body 12, and an upper cover 18 and a lower cover 20 that cover the upper surface 14 and the lower surface 16 of the box body 12, respectively. In the following description, “upper” means the upper part in FIG. 1, “lower” means the lower part in FIG. 1, “front” means the left in FIG. 1, and “rear” means the right in FIG. Shall.

<Box body 12>
The box body 12 has a long rectangular block shape as a whole, and is integrally formed by injection molding or the like with an insulating synthetic resin such as polypropylene (PP) or polyamide (PA). As shown in FIG. 5, a relay mounting portion 22, a resistance mounting portion 24, and a plurality of fuse mounting portions 26 are formed on the upper surface 14 of the box body 12 so as to open upward. In addition, although illustration is abbreviate | omitted, in the lower surface 16 of the box main body 12, several terminal accommodation holes are opened and formed below. That is, a crimp terminal or the like crimped to the end of an electric wire as a conducting member is accommodated and disposed in the terminal accommodation hole, and a bus bar 28 (see FIG. 1) as a conducting member constituting an electric circuit or the like. It is mounted and supported in a bus bar housing groove or the like.

  As shown in FIG. 1 and FIGS. 3 to 4, the relay 30 and the resistor 32 from the upper surface 14 side of the box body 12 to the relay mounting portion 22, the resistance mounting portion 24, and each fuse mounting portion 26. And a fuse 34 are mounted. As a result, a tab terminal (not shown) protruding from the relay 30, the resistor 32, and the fuse 34 is connected to the above-described crimp terminal of the end of the electric wire, the bus bar 28, and the like so as to be conductive.

  The peripheral part of the box body 12 is provided with a peripheral wall part 36 which is formed in a substantially rectangular cylindrical shape by extending in the vertical direction over the entire periphery. As shown in FIGS. 1 to 5, a terminal mounting portion 38 is provided at a circumferential center portion of the first peripheral wall portion 36 a behind the peripheral wall portion 36. More specifically, the terminal mounting portion 38 has a first peripheral wall portion 36a and a protruding end portion 40 projecting upward from the upper surface 14 side of the box body 12 in the first peripheral wall portion 36a in the vertical direction. Is formed in the upper surface 14 of the box body 12 adjacent to the notch 42 and is formed in a substantially rectangular shape when viewed from the rear and opened in the upward and backward directions. And a stud bolt mounting portion 44 to which is mounted. In addition, a guide portion that extends downward from the lower end portions on both sides in the circumferential direction of the notch portion 42 is provided at the center portion in the circumferential direction of the first peripheral wall portion 36 a adjacent to the notch portion 42. The guide portion includes a guide rib 48 extending downward in a substantially trapezoidal cross section on one side in the circumferential direction of the cutout portion 42 (left side in FIG. 3) and the other circumferential side of the cutout portion 42 ( 3 and includes a portion 50 to be locked for fitting the upper cover 18 to the box body 12.

<Terminal mounting part 38>
A stud bolt 52 projects from the stud bolt mounting portion 44 constituting the terminal mounting portion 38 on the upper surface 14 of the box body 12 with a head portion (not shown) fitted in a bolt receiving hole (not shown). As shown in FIG. 1, a bus bar terminal 54 of the bus bar 28 is inserted into the stud bolt 52. More specifically, the bus bar 28 is a plate formed by punching a conductive metal plate or the like, and includes a bus bar terminal 54 having a bolt insertion hole 56 at the tip thereof. It is bent at a substantially right angle. Then, by inserting the bolt insertion holes 56 into the screw shaft portions 58 of the stud bolts 52, the bus bar terminals 54 of the bus bar 28 are inserted into the screw shaft portions 58 of the stud bolts 52 and placed on the head portion. It is like that. As shown in FIGS. 1 and 3 to 4, an L-shaped terminal 64 provided at a wire terminal of an external electric wire 66 described later is mounted on the terminal mounting portion 38, and an L-shaped terminal 64 is mounted. A terminal cover 78 made of synthetic resin is attached.

  In addition, as shown in FIG. 5, a substantially flat portion to be locked 60 protrudes from one side (back side in FIG. 5) of the peripheral edge portion of the stud bolt mounting portion 44. On the other hand, on the other side (the front side in FIG. 5) of the peripheral edge of the stud bolt mounting portion 44, a pair of substantially prismatic members having a recessed portion on a facing surface provided apart in the length direction. A hinge portion 62 is formed.

<L-shaped terminal 64>
As shown in FIG. 1, the L-shaped terminal 64 is used in a state where it is connected to a core wire 68 exposed at the end of the external electric wire 66. More specifically, in the external electric wire 66, a core wire 68 obtained by bundling a plurality of metal wires such as copper, aluminum, or the like, which is a conductor, is covered with an insulating coating having an electrical insulation property such as an ethylene resin or a styrene resin. It is structured. On the other hand, the L-shaped terminal 64 is configured by a metal piece bent in an L-shape, and a connecting portion 72 having a bolt insertion hole 70 is formed at the tip thereof. In addition, an electric wire connecting portion 74 to which a core wire 68 extending from the end of the external electric wire 66 is crimped is formed at the base end portion of the L-shaped terminal 64.

  As shown in FIGS. 1 and 3, the bolt insertion hole 70 of the L-shaped terminal 64 to which the core wire 68 exposed to the end of the external electric wire 66 is crimped and connected in the electric wire connecting portion 74 is provided in the box body 12. When the nut 76 is assembled from above the stud bolt 52 while being inserted into the stud bolt 52 from above, the connecting portion 72 of the L-shaped terminal 64 is bolted to the stud bolt 52. In addition, when the bolt insertion hole 70 of the L-shaped terminal 64 is inserted into the stud bolt 52 from above the box body 12, the external electric wire 66 connected to the electric wire connecting portion 74 of the L-shaped terminal 64 is the first The guide portions 48 and 50 provided on the peripheral wall portion 36a are guided so as to be directed downward in the vertical direction. As a result, as shown in FIG. 3, the wire connection portion 74 of the L-shaped terminal 64 can be in a state of being disposed on the central portion side of the first peripheral wall portion 36 a of the box body 12. . As a result, the L-shaped terminal 64 is attached to the first peripheral wall portion 36 a, the notch portion 42, and the stud bolt attachment portion 44 that constitute the terminal attachment portion 38.

<Terminal cover 78>
As shown in FIG. 1, the terminal cover 78 has an upper cover 80 having a substantially rectangular bottomed cylindrical shape that opens downward, and is bent in an L shape to open downward and forward. In addition, it has a substantially rectangular bowl-shaped side cover 82 connected to the rear surface of the upper cover 80. In addition, a terminal cover 78 located in a closed state, which will be described later, is detachably fitted to a locked portion 60 provided in the box body 12 on one side surface (front side in FIG. 1) of the upper cover 80. A lock portion 84 is formed. On the other hand, the other side surface (the back side in FIG. 1) of the upper cover 80 is fitted to the hinge portion 62 of the box body 12 to be hinged to connect the terminal cover 78 to the box body 12. 86 is formed by a pair of substantially rod-like members that are provided apart in the length direction (vertical direction in FIG. 6) and that have protrusions on surfaces that are separated in the length direction.

  Further, the side cover 82 forms a bottom wall extending in a substantially bowl shape and extends downward and has a substantially vertically long front cover wall 88 in a rear view and one side (on the lock part 84 side) extending in a substantially bowl shape. A side cover wall 90 having a substantially vertically long rectangular shape in a side view that forms a side wall and extends downward, and a region that extends in a downward direction of the other side wall (on the hinge part 86 side) that extends in a substantially bowl shape, in side view. An opening 92 (see FIG. 7B) cut out in a substantially vertically long rectangular shape is included.

<Hinge part 86>
As shown in FIG. 1, the hinge portion 86 of the terminal cover 78 is fitted to the hinge portion 62 of the box body 12 from above the box body 12, so that the hinge portions 62 and 86 are interposed therebetween. The terminal cover 78 is hingedly connected to the box body 12. That is, the terminal cover 78 is hinged to the box body 12 via hinges 62 and 86 extending in a longitudinal direction (left and right direction in FIG. 1) orthogonal to the first peripheral wall portion 36a of the box body 12. It is. Accordingly, the terminal cover 78 is between an open state (see FIG. 3) in which the terminal mounting portion 38 to which the L-shaped terminal 64 is mounted is exposed to the outside and a closed state (see FIG. 4) covering the terminal mounting portion 38. Is freely rotatable around the hinge portions 62 and 86.

<Assembly process of electrical junction box 10>
As shown in FIGS. 3 and 4, in the closed state covering the terminal mounting portion 38, the upper cover 80 of the terminal cover 78 is bolted to the connection portion 72 of the L-shaped terminal 64 with respect to the stud bolt 52. The side cover 82 of the terminal cover 78 is configured to cover the electric wire connecting portion 74 of the L-shaped terminal 64. More specifically, the front cover wall 88 of the side cover 82 is configured to cover the wire connection portion 74 of the L-shaped terminal 64 from the outer peripheral side of the first peripheral wall portion 36a. The side cover wall 90 is configured to cover the front side surface that is spaced apart from the hinge portions 62 and 86 among the both side surfaces of the wire connecting portion 74 of the L-shaped terminal 64. In addition, by providing the opening 92 in the side cover 82, the side cover 82 of the terminal cover 78 is connected to the wire connection portion 74 of the L-shaped terminal 64 when the terminal cover 78 rotates around the hinge portions 62 and 86. It is possible to avoid the interference. In addition, the first peripheral wall portion 36a of the box body 12 has upper and lower portions of the locked portion 50, which is another functional member, covering the opening 92 of the terminal cover 78 positioned in the closed state over the entire length in the vertical direction. A projecting wall portion 94 is provided so as to protrude from one side (opening 92 side) extending in the direction.

  In this way, the L-shaped terminal 64 is mounted on the terminal mounting portion 38, and the box body 12 is in a state (closed state) in which the terminal cover 78 is assembled so as to cover the L-shaped terminal 64. By attaching the upper cover 18 and the lower cover 20, the electrical junction box 10 of this embodiment is completed. More specifically, as shown in FIGS. 1 to 3, of the peripheral wall portion 36, the first and third peripheral wall portions 36 a and 36 c that face each other in the longitudinal direction of the box body 12 include the box body 12. A locked part 50 is projected in the vicinity of the upper opening. On the other hand, the upper cover 18 that covers the upper opening of the box body 12 has a substantially box shape that opens downward, and is formed in a substantially rectangular shape that is substantially the same as the upper surface 14 of the box body 12 in plan view. For example, it is integrally formed by injection molding or the like with an insulating synthetic resin such as polypropylene (PP) or polyamide (PA). Lock portions 96 project from the peripheral wall portions facing in the longitudinal direction of the upper cover 18, and the lock portions 96 are fitted into the locked portions 50 of the box body 12, respectively. 14 can be locked in a cover state by the upper cover 18. In addition, the peripheral wall portion on the rear side (right side in FIG. 1) of the upper cover 18 is provided with a side cover cover lid portion 98 extending rearward and downward at the lower end portion of the central portion in the circumferential direction. It has been. As shown in FIGS. 2 and 4, the side cover cover portion 98 is a front cover in the side cover 82 of the terminal cover 78 in a state where the upper cover 18 covers the upper opening of the box body 12. A first wall portion 100a that covers the upper portion of the wall 88 from the outside, a second wall portion 100b that covers the upper portion of the side cover wall 90 from the outside, and a third wall that covers the upper portion of the opening 92 from the outside. Part 100c.

  Moreover, as FIG. 1-3 shows, the 2nd and 4th surrounding wall parts 36b and 36d which oppose in the width direction of the box main body 12 among the surrounding wall parts 36 are the downward opening parts of the box main body 12. In the vicinity, a lock portion 102 is projected. On the other hand, the lower cover 20 that covers the lower opening of the box body 12 has a substantially box shape that opens upward, and is formed in a substantially rectangular shape that is substantially the same as the lower surface 16 of the box body 12 in a bottom view. For example, it is integrally formed by injection molding or the like with an insulating synthetic resin such as polypropylene (PP) or polyamide (PA). Locked portions 104 protrude from the peripheral wall portions facing in the width direction of the lower cover 20, and the locked portions 104 are fitted into the lock portions 102 of the box body 12, respectively. 16 can be locked in a cover state by the lower cover 20.

  Then, the effect of this embodiment is demonstrated. According to the present embodiment, the terminal cover 78 is hinged to the box body 12 via the hinge parts 62 and 86 extending in the longitudinal direction perpendicular to the first peripheral wall part 36 a of the box body 12. As a result, the terminal cover 78 rotates around the hinge portions 62 and 86 between the open state in which the terminal mounting portion 38 to which the L-shaped terminal 64 is mounted is exposed to the outside and the closed state in which the terminal mounting portion 38 is covered. It is supposed to be free. Therefore, the terminal cover 78 can be opened and closed without fear of losing the terminal cover 78. Further, since the open state and the closed state can be switched by a simple operation of rotating the terminal cover 78 around the hinge portions 62 and 86, the L-shaped terminal is mounted after the terminal cover 78 having the conventional structure is attached to the L-shaped terminal 64. Compared with the case where 64 is bolted to the stud bolt 52, the bolt fastening of the L-shaped terminal 64 to the stud bolt 52 can be performed easily. Therefore, the bolt fastening workability of the L-shaped terminal 64 is improved when the electric junction box 10 is mounted on the vehicle or during maintenance. Further, the terminal cover 78 of the present embodiment is provided with a lock portion 84 that detachably fits the terminal cover 78 positioned in the closed state to the locked portion 60 provided in the box body 12. When the upper cover 18 is removed at the time of maintenance or the like, the terminal cover 78 can be prevented from being inadvertently removed, and the risk of electric shock can be reduced more reliably.

  Moreover, the terminal cover 78 is configured so that the upper cover 80 of the terminal cover 78 covers the bolt fastening portion where the connection portion 72 of the L-shaped terminal 64 is bolted in the closed state in which the terminal mounting portion 38 is covered. . Therefore, when the upper cover 18 is removed, the bolt fastening portion of the connecting portion 72 of the stud bolt 52 and the L-shaped terminal 64 is not exposed, and the risk of electric shock is avoided. Further, since the side cover 82 of the terminal cover 78 is configured to cover the wire connection portion 74 of the L-shaped terminal 64, problems such as current leakage due to water splashing are prevented. Furthermore, since the upper cover 80 and the side cover 82 of the terminal cover 78 can be displaced between the open state and the closed state by a single turning operation, the workability is further improved.

  In addition, in the terminal cover 78 hinged around the hinge portions 62 and 86 extending in the direction orthogonal to the first peripheral wall portion 36a of the box body 12, the upper cover 80 and the side cover 82 are moved by a single rotation operation. In order to enable the opening / closing operation, the side cover 82 is provided with an opening 92 for avoiding interference between the L-shaped terminal 64 disposed on the first peripheral wall 36a side and the side cover 82. ing. Since the opening 92 is covered with the projecting wall 94 projecting from the first peripheral wall 36 a in the closed state of the terminal cover 78, the electric wire connection of the L-shaped terminal 64 through the opening 92. The exposure of the rear side surface of the portion 74 to the outside is avoided by being covered with the protruding wall portion 94. Therefore, it is possible to skillfully achieve both good workability of mounting the L-shaped terminal 64 on the terminal mounting portion 38 and covering the entire L-shaped terminal 64 mounted on the terminal mounting portion 38. . In addition, since the protruding wall portion 94 is configured using one side wall of the locked portion 50 that is another functional member provided on the first peripheral wall portion 36a, the electrical connection box 10 can be downsized. And material saving.

  Further, the electric wire connecting portion 74 of the L-shaped terminal 64 is double-covered by the side cover cover lid portion 98 of the upper cover 18 and the side cover 82 of the terminal cover 78. In addition, the side cover cover 98 has three wall portions 100a, 100b, and 100c that respectively cover the front cover wall 88, the side cover wall 90, and the opening 92 in the side cover 82 of the terminal cover 78 from the outside. Thus, the side cover 82 can be stably covered with sufficient rigidity, and the reliability of the cover for the opening 92 of the side cover 82 can be improved.

<Modification>
As described above, the first embodiment has been described in detail as a specific example of the present disclosure, but the present disclosure is not limited to the specific description. Modifications, improvements, and the like within the scope that can achieve the object of the present disclosure are included in the present disclosure. For example, modifications of the following embodiment are also included in the technical scope of the present disclosure.
(1) In the above embodiment, the hinge portion is configured by fitting the hinge portion 86 of the terminal cover 78 and the hinge portion 62 of the box body 12, but for example, via a thin-walled hinge portion. The box body 12 and the terminal cover 78 may be integrally formed.
(2) Moreover, in the said embodiment, although the protrusion wall part 94 was comprised using one side wall of the to-be-locked part 50 which is a functional member, for example, a bracket mounting part and a lock fitting part are also used. It may be configured using any functional member such as, or may not be used.
(3) In the above embodiment, the locked portion 60 that locks the terminal cover 78 to the box body 12 and the side cover cover portion 98 that covers the side cover 82 of the terminal cover 78 are provided. Not necessary.

  The technical idea that can be grasped from the above embodiment will be described below.

(1) a box body that contains a conductive member that constitutes an electric circuit; a terminal mounting portion that includes a stud bolt that is provided on the upper surface of the box body and is conductively connected to the conductive member; and A synthetic resin terminal cover that covers an L-shaped terminal provided at the end of the external electric wire to be mounted, and the L-shaped terminal is inserted into a bolt insertion hole at the tip of the L-shaped metal piece. And a wire connection portion connected to the wire terminal is formed on the base end side, and the stud bolt is inserted into the bolt insertion hole of the L-shaped terminal. The connection portion of the L-shaped terminal is bolted to the stud bolt, and the wire connection portion of the L-shaped terminal is disposed on the first peripheral wall portion side of the box body. So that the character terminal is attached to the terminal attachment part. In the electrical connection box, the terminal cover is hinged to the box body via a hinge part extending in a direction orthogonal to the first peripheral wall of the box body, and the terminal mounting part The terminal cover is rotatable around a hinge portion between an open state that exposes the terminal to the outside and a closed state that covers the terminal mounting portion, and the terminal cover includes the stud bolt and the L-shaped terminal. An upper cover that covers the bolt fastening portion of the connecting portion, and a side cover that covers the wire connecting portion of the L-shaped terminal, and the side cover covers the wire connecting portion of the L-shaped terminal. A front cover wall covering from the outer peripheral side of the first peripheral wall portion, a side cover wall covering a front side surface spaced from the hinge portion among both side surfaces of the electric wire connecting portion, and the terminal cover around the hinge portion In rotation A protruding wall portion that covers the opening portion of the terminal cover located in the closed state on the first peripheral wall portion of the box body. Is projected.

  In the electrical connection box of the technical idea (1), the terminal cover that covers the L-shaped terminal mounted on the terminal mounting part is hinged to the box body, and the terminal mounting part is exposed to the outside and the terminal mounted. The terminal cover is rotatable around the hinge portion in a closed state that covers the portion. Therefore, it is possible to open and close the terminal cover without fear of losing the terminal cover, and to switch between the open state and the closed state by a simple operation of rotating the terminal cover around the hinge portion. As in the structure, after attaching the terminal cover to the L-shaped terminal, the L-shaped terminal can be easily fastened to the stud bolt compared to the case where the L-shaped terminal is bolted to the stud bolt, Improvement of fastening workability of the L-shaped terminal at the time of mounting the electric junction box on the vehicle or maintenance is attempted.

  Moreover, since the terminal cover has an upper cover that covers the bolt fastening portion of the connection portion between the stud bolt and the L-shaped terminal, and a side cover that covers the wire connection portion of the L-shaped terminal, the upper cover of the box body Even when is removed, the bolt fastening portion of the connecting portion between the stud bolt and the L-shaped terminal is not exposed, and the risk of electric shock is avoided. In addition, in the L-shaped terminal attached to the terminal mounting part, the wire connection part arranged on the first peripheral wall part side of the box body is also securely covered by the side cover of the terminal cover, and it is covered with water. Problems such as current leakage due to the above are also prevented in advance. Further, the upper cover and the side cover can be displaced between the open state and the closed state by a single rotation operation, and the workability is further improved.

  In addition, in the terminal cover hinged around the hinge portion extending in the direction orthogonal to the first peripheral wall portion, in order to enable the opening and closing operation of the upper cover and the side cover by a single rotation operation, It is necessary to avoid interference between the terminal mounting portion of the L-shaped terminal disposed on the first peripheral wall portion side and the side cover, and the side cover is provided with an opening for avoiding such interference. . From the opening, the rear side surface located near the hinge portion of both side surfaces of the wire connection portion of the L-shaped terminal is exposed to the outside. On the other hand, since the projecting wall part which covers the opening part in the closed state of the terminal cover protrudes on the first peripheral wall part of the box body, the rear side surface of the L-shaped terminal through the opening part is provided. Exposure to the outside is avoided by being covered by the protruding wall portion. Thereby, it is possible to skillfully achieve both good workability for the terminal mounting portion of the L-shaped terminal and the covering property of the entire L-shaped terminal mounted on the terminal mounting portion.

(2) The upper cover of the terminal cover is formed with a lock portion for detachably fitting the terminal cover positioned in the closed state to a locked portion provided in the box body. is there.

  According to the electrical connection box of the technical idea (2), the terminal cover can be securely locked in the closed state. Therefore, it is possible to prevent the terminal cover from being inadvertently removed when the upper cover is removed during maintenance or the like, and to reduce the risk of electric shock more reliably.

(3) The protruding wall portion protruding from the first peripheral wall portion is configured using a wall portion of another functional member provided on the first peripheral wall portion.

  According to the electrical connection box of the technical idea (3), the protruding wall portion is configured using the wall portion of another functional member provided on the first peripheral wall portion. In many cases, functional members such as bracket mounting portions and lock fitting portions are projected on the peripheral wall portion of the electrical junction box, and the projecting wall portion is configured using these wall portions to Downsizing and material saving.

(4) An upper cover that covers the upper opening of the box body is provided, and the front cover wall, the side cover wall, and the opening of the side cover of the terminal cover are respectively connected to the upper cover from the outside. A side cover covering lid portion having three wall portions to be covered is provided.

  According to the electrical connection box of the technical idea (3), the electric wire connection part of the L-shaped terminal (arrangement region on the first peripheral wall part side) by the side cover cover part of the upper cover and the side cover of the terminal cover. Are covered twice. In particular, since the side cover cover lid portion has three wall portions that respectively cover the front cover wall, the side cover wall, and the opening in the side cover of the terminal cover from the outside, it has sufficient rigidity. The side cover can be stably covered, and the reliability of the cover of the opening of the side cover can be improved.

DESCRIPTION OF SYMBOLS 10 Electrical connection box 12 Box main body 14 Upper surface 16 Lower surface 18 Upper cover 20 Lower cover 22 Relay mounting part 24 Resistance mounting part 26 Fuse mounting part 28 Bus bar (conduction member)
30 relay 32 resistor 34 fuse 36 peripheral wall portion 36a first peripheral wall portion 36b second peripheral wall portion 36c third peripheral wall portion 36d fourth peripheral wall portion 38 terminal mounting portion 40 projecting end portion 42 notch portion 44 stud bolt mounting portion 48 Guide rib 50 Locked part (other functional members)
52 Stud bolt 54 Bus bar terminal 56 Bolt insertion hole 58 Screw shaft part 60 Locked part 62 Hinge part 64 L-shaped terminal 66 External electric wire 68 Core wire 70 Bolt insertion hole 72 Connection part 74 Electric wire connection part (connection part)
76 Nut 78 Terminal cover 80 Upper cover 82 Side cover 84 Lock part 86 Hinge part 88 Front cover wall 90 Side cover wall 92 Opening part 94 Projection wall part 96 Lock part 98 Side cover cover part 100a First wall part 100b First Second wall portion 100c Third wall portion 102 Lock portion 104 Locked portion

Claims (3)

A box body containing an electrical circuit;
A connection part in which the electric circuit and the external electric wire are conductively connected;
The box body is provided rotatably via a hinge part, and includes a terminal cover capable of switching between an open state exposing the connection part to the outside and a closed state covering the connection part,
The terminal cover has an opening in which a side cover that covers the connection portion in the closed state is cut out;
The opening is an electrical junction box covered with a protruding wall portion protruding from the box body in a closed state of the terminal cover.   The electrical connection box according to claim 1, wherein the connection portion connects an L-shaped terminal provided at a terminal of the external electric wire and the electrical circuit. The terminal cover has a locking portion;
The electrical connection box according to claim 1, wherein the lock part is detachably fitted to a locked part provided in the box body.

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