JP6770695B2 - Electrical junction box - Google Patents

Description

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

Conventionally, an electric connection box used in an electric system of an automobile is provided with a box body for accommodating conductive members such as a bus bar constituting an electric circuit, and a part of the box body is an external electric wire terminal for power supply or the like. There is known a structure in which a terminal mounting portion for mounting the L-shaped terminal provided in the above is provided. For example, in Japanese Patent Application Laid-Open No. 2001-155798 (Patent Document 1), a terminal mounting portion in which an L-shaped terminal is bolted to a stud bolt that projects a stud bolt that conducts to a conductive member on the upper surface of the box body. A structure with the above has been proposed.

Japanese Unexamined Patent Publication No. 2001-155798

By the way, in the L-shaped terminal, as described in Patent Document 1, a connecting portion having a bolt insertion hole is formed at the tip end portion of a metal piece bent in a substantially L-shape, and crimping is provided on the base end portion side. The structure is such that the part is crimped to the core wire exposed on the electric wire terminal. Therefore, when a stud bolt is inserted into the bolt insertion hole and the connection portion of the L-shaped terminal is fastened to the stud bolt projecting from the upper surface of the box body, the base end side of the L-shaped terminal or the crimping portion Is disposed on the surface of the peripheral wall of the box body and is exposed, which may cause current leakage due to water splashing. Therefore, as described in Patent Document 1, a structure is adopted in which the bolt tightening terminal is attached to a terminal cover made of synthetic resin and the base end side of the bolt tightening terminal and the crimping portion are covered with the terminal cover.

However, in the conventional electrical connection box, the connection part of the bolted terminal protrudes from the terminal cover and is exposed. Therefore, 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. In addition, when assembling to a vehicle, it is complicated to insert the L-shaped terminal of the electric wire terminal into the terminal cover or to assemble the electric wire with the L-shaped terminal to the box body with the terminal cover attached to the L-shaped terminal. It was. In addition, during vehicle maintenance, the terminal cover removed from the L-shaped terminal may be lost, and further improvement has been required.

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 connection portion conducted to the conductive member of the box body is exposed to the outside. It is an object of the present invention to provide an electric connection box having a new structure capable of easily fastening a connection portion to an electric circuit while surely preventing the connection.

The electric connection box of the present disclosure is provided rotatably on the box main body via a box main body, a connection portion in which the electric circuit and an external electric wire are conductively connected, and a hinge portion. The terminal cover is provided with a terminal cover that can switch between an open state that exposes the connection portion to the outside and a closed state that covers the connection portion, and the terminal cover is an opening in which the side cover that covers the connection portion is cut out in the closed state. The opening is an electrical connection box having a portion and being covered with a protruding wall portion protruding from the box body in a closed state of the terminal cover.

According to the present disclosure, there is no risk of losing the terminal cover, and it is possible to improve the fastening workability of the connection portion at the time of mounting the electric junction box on the vehicle or during maintenance and to achieve both the covering property and the covering property. Moreover, the risk of electric shock is avoided.

FIG. 1 is an exploded perspective view showing an electrical connection box according to the first embodiment of the present disclosure. FIG. 2 is an overall perspective view of the electrical connection box shown in FIG. FIG. 3 is a perspective view in which the upper cover is removed from the electrical connection box shown in FIG. 2 and the terminal cover is opened. FIG. 4 is a perspective view with the terminal cover shown in FIG. 3 closed. FIG. 5 is a perspective view of the box body shown in FIG. 1 as viewed from another direction (various parts are not attached). 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).

<Explanation of Embodiments of the 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 accommodating an electric circuit, a connection portion in which the electric circuit and an external electric wire are conductively connected, and the box body are rotatably provided via a hinge portion, and the connection portion is provided to the outside. The terminal cover is provided with a terminal cover capable of switching between an exposed open state and a closed state covering the connection portion, and the terminal cover has an opening in which a side cover covering the connection portion is cut out in the closed state. The opening is an electrical connection box that is covered with a protruding wall portion that protrudes 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 covering the connection portion is hinged to the box body, and the terminal cover is provided between the open state where the connection portion is exposed to the outside and the closed state where the connection portion is covered. It is rotatable around the hinge. Therefore, the terminal cover can be opened and closed without the risk of losing the terminal cover, and the open state and the closed state can be switched by a simple operation of rotating the terminal cover around the hinge portion. As in the structure, after the terminal cover is attached to the connection part, the connection part can be bolted more easily than when the connection part is bolted, and when the electrical junction box is mounted on the vehicle. The workability of fastening the connection part during maintenance is improved.

In addition, the side cover of the terminal cover surely covers the electric wire connection portion constituting the connection portion, and problems such as current leakage due to water splashing are prevented. Further, it can be displaced to 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, it is necessary to avoid interference between the connection portion and the side cover in order to enable the opening / closing operation of the side cover by a single rotation operation. Yes, the side cover is provided with an opening to avoid such interference. From such an opening, the rear side surface of both side surfaces of the connecting portion, which is located close to the hinge portion, is exposed to the outside. On the other hand, since the box body has a protruding wall portion that covers the opening in the closed state of the terminal cover, the exposure to the outside of the rear side surface of the connecting portion through the opening protrudes. It is covered by a wall to avoid it. As a result, it is possible to ensure good workability of mounting the connecting portion and to achieve both the covering property of the entire mounted connecting portion.

(2) It is preferable that the connection portion connects the L-shaped terminal provided on the terminal of the external electric wire and the electric circuit. As a result, it is possible to improve the workability of the complicated work of assembling the electric wire with the L-shaped terminal to the box body with the terminal cover attached to the conventional L-shaped terminal.

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

<Details of Embodiments of the present disclosure>
Specific examples of the electrical junction box of the present disclosure will be described below with reference to the drawings. It should be noted that the present disclosure is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

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

<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 resistor mounting portion 24, and a plurality of fuse mounting portions 26 are formed with openings upward on the upper surface 14 of the box body 12. Although not shown, a plurality of terminal accommodating holes are formed downward on the lower surface 16 of the box body 12. That is, a crimp terminal or the like crimped to the terminal of the electric wire as a conductive member is accommodated and arranged in the terminal accommodating hole, and a bus bar 28 (see FIG. 1) or the like as a conductive member constituting the electric circuit is provided. It is designed to be mounted and supported in a bus bar accommodating groove or the like.

Then, as shown in FIGS. 1 and 3 to 4, the relay 30 and the resistor 32 are attached to the relay mounting portion 22, the resistance mounting portion 24, and each fuse mounting portion 26 from the upper surface 14 side of the box body 12. And fuse 34 are installed. As a result, the tab terminals (not shown) protruding from the relay 30, the resistor 32, and the fuse 34 are connected to the crimp terminals of the above-mentioned electric wire terminals, the bus bar 28, and the like to be conducted.

A peripheral wall portion 36 is provided on the peripheral edge of the box body 12 so as to extend in the vertical direction over the entire circumference to form a substantially rectangular tubular shape. As shown in FIGS. 1 to 5, a terminal mounting portion 38 is provided at the central portion in the circumferential direction of the first peripheral wall portion 36a behind the peripheral wall portion 36. More specifically, in the terminal mounting portion 38, the first peripheral wall portion 36a and the protruding end portion 40 of the first peripheral wall portion 36a projecting upward from the upper surface 14 side of the box body 12 are in the vertical direction. A substantially rectangular notch 42 formed by being cut out in the box body 12 adjacent to the notch 42 and an L-shaped terminal 64 which is formed on the upper surface 14 of the box body 12 which opens in the upward and front-rear directions. Is included in the stud bolt mounting portion 44 to which the stud bolt is mounted. In addition, a guide portion extending downward from the lower ends on both sides of the notch portion 42 in the circumferential direction is provided at the central portion in the circumferential direction of the first peripheral wall portion 36a adjacent to the notch portion 42. Such a guide portion includes a guide rib 48 extending downward in a substantially trapezoidal cross-sectional shape on one side (left side in FIG. 3) of the notch portion 42 in the circumferential direction, and the other side (the other side in the circumferential direction of the notch portion 42). In FIG. 3 (on the right side in FIG. 3), it is configured to include a locked portion 50 for fitting the upper cover 18 to the box body 12, which extends downward.

<Terminal mounting part 38>
A stud bolt 52 is projected onto the upper surface 14 of the box body 12 in a state where a head portion (not shown) is fitted into a bolt accommodating hole (not shown) in the stud bolt mounting portion 44 constituting the terminal mounting portion 38. As shown in FIG. 1, the bus bar terminal 54 of the bus bar 28 is inserted and arranged in the stud bolt 52. More specifically, the bus bar 28 is a plate formed by punching a conductive metal plate or the like, and is provided with a bus bar terminal 54 having a bolt insertion hole 56 at its tip, and the bus bar terminal 54 is provided. It is formed by bending at a substantially right angle. Then, by inserting the bolt insertion holes 56 into the screw shaft portion 58 of the stud bolt 52, the bus bar terminal 54 of the bus bar 28 is inserted into the screw shaft portion 58 of the stud bolt 52 and placed on the head portion. It has become like this. Then, as shown in FIGS. 1 and 3 to 4, the terminal mounting portion 38 is mounted with the L-shaped terminal 64 provided in the electric wire terminal of the external electric wire 66 described later, and the L-shaped terminal 64 is mounted. A terminal cover 78 made of synthetic resin that covers the above can be assembled.

In addition, as shown in FIG. 5, a substantially flat plate-shaped locked portion 60 is projected on 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 (front side in FIG. 5) of the peripheral edge portion of the stud bolt mounting portion 44, a pair of substantially prismatic members provided apart from each other in the length direction and having recesses on opposite surfaces are provided. 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 of being connected to the core wire 68 exposed to the terminal of the external electric wire 66. More specifically, in the external electric wire 66, the core wire 68, which is a bundle of a plurality of conductors such as copper, aluminum, and other metal wires, is covered with an insulating coating having an electrical insulating property such as an ethylene resin or a styrene resin. It is said to be a structure. On the other hand, the L-shaped terminal 64 is composed of a metal piece bent in an L-shape, and a connecting portion 72 having a bolt insertion hole 70 is formed at the tip portion thereof. Further, at the base end portion of the L-shaped terminal 64, an electric wire connecting portion 74 to which the core wire 68 extending from the terminal of the external electric wire 66 is crimp-connected is formed.

Then, 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 terminal of the external electric wire 66 is crimp-connected at the electric wire connecting portion 74 is inserted into the box body 12 By assembling the nut 76 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, 50 provided on the peripheral wall portion 36a guide the peripheral wall portion 36a downward in the vertical direction. As a result, as shown in FIG. 3, the electric wire connecting portion 74 of the L-shaped terminal 64 can be arranged on the central portion side of the first peripheral wall portion 36a of the box body 12. .. As a result, the L-shaped terminal 64 is mounted on the first peripheral wall portion 36a, the notch portion 42, and the stud bolt mounting portion 44 that form the terminal mounting portion 38.

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

Further, the side cover 82 constitutes a bottom wall extending substantially in a gutter shape, and has a substantially vertically long rectangular front cover wall 88 extending downward in a rear view, and one side extending in a substantially gutter shape (lock portion 84 side). It is provided in a side cover wall 90 that constitutes a side wall and extends downward in a substantially vertically elongated rectangular shape, and a region that extends downward in the other side surface (on the hinge portion 86 side) that extends in a gutter shape and is provided in a side view. It is configured to include an opening 92 (see FIG. 7B) cut out in a substantially vertically long rectangular shape.

<Hinge part 86>
Then, as shown in FIG. 1, the hinge portion 86 of the terminal cover 78 is fitted to the hinge portion 62 of the box main body 12 from above the box main body 12 so as to pass through the hinge portions 62 and 86. The terminal cover 78 is hinged 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 the longitudinal direction (left-right direction in FIG. 1) orthogonal to the first peripheral wall portion 36a of the box body 12. There is. As a result, the terminal cover 78 is between an open state in which the terminal mounting portion 38 on which the L-shaped terminal 64 is mounted is exposed to the outside (see FIG. 3) and a closed state in which the terminal mounting portion 38 is covered (see FIG. 4). Is 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 of covering the terminal mounting portion 38, the upper cover 80 of the terminal cover 78 is bolted to the stud bolt 52 by the connecting portion 72 of the L-shaped terminal 64. It is configured to cover the bolted fastening portion, and 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 electric wire connecting portion 74 of the L-shaped terminal 64 from the outer peripheral side of the first peripheral wall portion 36a, and the side cover 82. The side cover wall 90 is configured to cover the front side surface of the electric wire connecting portion 74 of the L-shaped terminal 64, which is separated from the hinge portions 62 and 86, on both side surfaces. Moreover, by providing the opening 92 in the side cover 82, when the terminal cover 78 rotates around the hinge portions 62 and 86, the side cover 82 of the terminal cover 78 becomes the electric wire connecting portion 74 of the L-shaped terminal 64. It is possible to avoid interfering with. In addition, on the first peripheral wall portion 36a of the box body 12, the upper and lower locked portions 50, which are other functional members, cover the opening 92 of the terminal cover 78 located in the closed state over the entire length in the vertical direction. A protruding wall portion 94 formed by utilizing the side wall of one side (opening 92 side) extending in the direction is projected.

With respect to the box body 12 in which the L-shaped terminal 64 is mounted on the terminal mounting portion 38 and the terminal cover 78 is assembled (closed state) so as to cover the L-shaped terminal 64 in this way. By attaching the upper cover 18 and the lower cover 20, the electrical connection box 10 of the present embodiment is completed. More specifically, as shown in FIGS. 1 to 3, among the peripheral wall portions 36, the first and third peripheral wall portions 36a and 36c facing each other in the longitudinal direction of the box main body 12 have the box main body 12 A locked portion 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, while is formed in a substantially rectangular shape that is substantially the same as the upper surface 14 of the box body 12 in a 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). A lock portion 96 is provided so as to project from a peripheral wall portion of the upper cover 18 facing in the longitudinal direction, and the lock portion 96 is fitted to the locked portion 50 of the box body 12, so that the upper surface of the box body 12 is upper surface. 14 can be locked by the upper cover 18 in a covered state. In addition, on the peripheral wall portion on the rear side (right side in FIG. 1) of the upper cover 18, a side cover covering portion 98 extending rearward and downward is provided at the lower end portion of the central portion in the circumferential direction. Has been done. As shown in FIGS. 2 and 4, the side cover covering portion 98 is a front cover of 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. It is configured to include a part 100c.

Further, as shown in FIGS. 1 to 3, among the peripheral wall portions 36, the second and fourth peripheral wall portions 36b and 36d facing each other in the width direction of the box main body 12 have lower openings of the box main body 12. A lock portion 102 is projected in the vicinity. 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, while is formed in a substantially rectangular shape that is substantially the same as the lower surface 16 of the box body 12 in 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). A locked portion 104 is projected from a peripheral wall portion facing the lower cover 20 in the width direction, and the locked portion 104 is fitted to the locked portion 102 of the box main body 12, so that the lower surface of the box main body 12 is fitted with the locked portion 104. The lower cover 20 can lock the 16 in the covered state.

Subsequently, the action and effect of this embodiment will be described. According to the present embodiment, the terminal cover 78 is hinged to the box body 12 via hinges 62 and 86 extending in the longitudinal direction orthogonal to the first peripheral wall portion 36a 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 on 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 said to be free. Therefore, the terminal cover 78 can be opened and closed without the risk 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 attached to the L-shaped terminal 64 as in the conventional structure. Compared with the case where the 64 is bolted to the stud bolt 52, the bolt fastening of the L-shaped terminal 64 to the stud bolt 52 can be easily performed. Therefore, the bolt fastening workability of the L-shaped terminal 64 at the time of mounting the electric junction box 10 on the vehicle or during maintenance is improved. Further, since the terminal cover 78 of the present embodiment is provided with a lock portion 84 that detachably fits the terminal cover 78 located in the closed state to the locked portion 60 provided on the box body 12. When the upper cover 18 is removed during maintenance or the like, it is possible to prevent the terminal cover 78 from being inadvertently removed, and the risk of electric shock can be reduced more reliably.

Moreover, the terminal cover 78 is configured such that the upper cover 80 of the terminal cover 78 covers the bolted fastening portion to which the connecting portion 72 of the L-shaped terminal 64 is bolted in the closed state of covering the terminal mounting portion 38. .. 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 electric wire connecting portion 74 of the L-shaped terminal 64, problems such as current leakage due to water splashing are prevented. Further, 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 rotation 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 by a single rotation operation. The side cover 82 is provided with an opening 92 for avoiding interference between the L-shaped terminal 64 arranged on the first peripheral wall portion 36a side and the side cover 82 in order to enable the opening / closing operation of the side cover 82. ing. Since the opening 92 is covered by the protruding wall portion 94 projecting from the first peripheral wall portion 36a in the closed state of the terminal cover 78, the electric wire connection of the L-shaped terminal 64 via the opening 92 is provided. The exposure of the rear side surface of the portion 74 to the outside is avoided by being covered by the protruding wall portion 94. Therefore, it is possible to skillfully ensure good mounting workability of the L-shaped terminal 64 on the terminal mounting portion 38 and to cover the entire L-shaped terminal 64 mounted on the terminal mounting portion 38. .. Further, since the protruding wall portion 94 is configured by utilizing one side wall of the locked portion 50 which is another functional member provided on the first peripheral wall portion 36a, the electric connection box 10 is downsized. And material saving is being planned.

Further, the electric wire connecting portion 74 of the L-shaped terminal 64 is doubly covered by the side cover covering portion 98 of the upper cover 18 and the side cover 82 of the terminal cover 78. Moreover, the side cover cover portion 98 has three wall portions 100a, 100b, and 100c that cover the front cover wall 88, the side cover wall 90, and the opening 92 of the side cover 82 of the terminal cover 78 from the outside, respectively. Therefore, it is possible to stably cover the side cover 82 with sufficient rigidity, and it is also possible to improve the certainty of the cover of the side cover 82 with respect to the opening 92.

<Modification example>
Although the first embodiment has been described in detail as a specific example of the present disclosure, the present disclosure is not limited by the specific description thereof. Modifications, improvements, etc. to the extent that the object of the present disclosure can be achieved are included in the present disclosure. For example, the following modifications of the 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, for example, via a thin-walled hinge portion. The box body 12 and the terminal cover 78 may be integrally formed.
(2) Further, in the above embodiment, the protruding wall portion 94 is configured by using one side wall of the locked portion 50 which is a functional member, but in addition to this, for example, a bracket mounting portion and a lock fitting portion. It may be configured by using any functional member such as, or may be configured without using it.
(3) In the above embodiment, the locked portion 60 for locking the terminal cover 78 to the box body 12 and the side cover covering portion 98 for covering the side cover 82 of the terminal cover 78 are provided, but they are not always provided. Not necessary.

The technical ideas that can be grasped from the above embodiments will be described below.

(1) A box main body containing a conductive member constituting an electric circuit, a terminal mounting portion provided with a stud bolt projecting from the upper surface of the box main body and conductively connected to the conductive member, and the terminal mounting portion. A synthetic resin terminal cover for covering the L-shaped terminal provided on the electric wire terminal of the external electric wire to be mounted is provided, and the L-shaped terminal has a bolt insertion hole in the tip of a metal piece bent in an L shape. A connection portion having the above is formed, and an electric wire connection portion connected to the electric 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 L-shaped terminal is bolted to the stud bolt, and the electric wire connecting portion of the L-shaped terminal is arranged on the first peripheral wall side of the box body. In an electric connection box in which a character terminal is mounted on the terminal mounting portion, the terminal cover extends through a hinge portion extending in a direction orthogonal to the first peripheral wall portion of the box body. It is hinged to the box body, and the terminal cover is rotatable around the hinge portion between the open state where the terminal mounting portion is exposed to the outside and the closed state where the terminal mounting portion is covered. The terminal cover has an upper cover that covers the bolt fastening portion of the stud bolt and the connection portion of the L-shaped terminal, and a side cover that covers the electric wire connection portion of the L-shaped terminal. The cover covers the front cover wall that covers the electric wire connecting portion of the L-shaped terminal from the outer peripheral side of the first peripheral wall portion, and the side surface that covers the front side surface of both side surfaces of the electric wire connecting portion that is separated from the hinge portion. The cover wall and an opening for avoiding interference with the L-shaped terminal in the rotation of the terminal cover around the hinge portion are included in the first peripheral wall portion of the box body. A protruding wall portion that covers the opening of the terminal cover located in the closed state is provided so as to project.

In the electrical connection box of the technical idea (1), the terminal cover that covers the L-shaped terminal mounted on the terminal mounting portion is hinged to the box body, and the terminal mounting portion is exposed to the outside in the open state and the terminal mounting. The terminal cover is rotatable around the hinge portion during the closed state of covering the portion. Therefore, the terminal cover can be opened and closed without the risk of losing the terminal cover, and the open state and the closed state can be switched by a simple operation of rotating the terminal cover around the hinge portion. As in the structure, after the terminal cover is attached to the L-shaped terminal, the L-shaped terminal can be easily fastened to the stud bolt as compared with the case where the L-shaped terminal is bolted to the stud bolt. The workability of fastening the L-shaped terminal when the electric junction box is mounted on a vehicle or during maintenance is improved.

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 electric wire connection portion of the L-shaped terminal, the upper cover of the box body is provided. Even when the bolt is removed, the bolt fastening portion of the connection portion between the stud bolt and the L-shaped terminal is not exposed, and the risk of electric shock is avoided. In addition, the side cover of the terminal cover ensures that the L-shaped terminal mounted on the terminal mounting portion also covers the electric wire connecting portion arranged on the first peripheral wall side of the box body, and is splashed with water. Problems such as current leakage due to the above are also prevented. Further, the upper cover and the side cover can be displaced to 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 arranged on the first peripheral wall side and the side cover, and the side cover is provided with an opening for avoiding such interference. .. From such an opening, the rear side surface located close to the hinge portion of both side surfaces of the electric wire connecting portion of the L-shaped terminal is exposed to the outside. On the other hand, since the protruding wall portion that covers the opening in the closed state of the terminal cover is projected from the first peripheral wall portion of the box body, the rear side surface of the L-shaped terminal is provided through the opening. Exposure to the outside is avoided by being covered by a protruding wall portion. As a result, it is possible to ensure good workability of the L-shaped terminal on the terminal mounting portion and to achieve both 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 that detachably fits the terminal cover located in the closed state to the locked portion provided on the box body. is there.

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

(3) The protruding wall portion projecting from the first peripheral wall portion is configured by utilizing the 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 by utilizing the wall portion of another functional member provided on the first peripheral wall portion. Functional members such as bracket mounting portions and lock fitting portions are often projected from the peripheral wall portion of the electrical junction box, and by forming a protruding wall portion using these wall portions, the electrical junction box It is possible to reduce the size and material of the product.

(4) An upper cover for covering the upper opening of the box body is provided, and the upper cover includes the front cover wall, the side cover wall, and the opening of the side cover of the terminal cover from the outside. A side cover covering portion having three wall portions to cover is provided.

According to the electrical connection box of the technical idea (3), the wire connection portion of the L-shaped terminal (arrangement area on the first peripheral wall portion side) is provided by the side cover cover portion of the upper cover and the side cover portion of the terminal cover. Is doubly covered. In particular, since the side cover cover portion has three wall portions that cover the front cover wall, the side cover wall, and the opening of the side cover of the terminal cover from the outside, it has sufficient rigidity. The side cover can be stably covered, and the certainty of the cover of the opening of the side cover can be improved.

10 Electrical connection box 12 Box body 14 Top surface 16 Bottom surface 18 Upper cover 20 Lower cover 22 Relay mounting part 24 Resistance mounting part 26 Fuse mounting part 28 Busbar (conduction member)
30 Relay 32 Resistance 34 Fuse 36 Peripheral wall 36a First peripheral wall 36b Second peripheral wall 36c Third peripheral wall 36d Fourth peripheral wall 38 Terminal mounting 40 Protruding end 42 Notch 44 Stud bolt mounting 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 wire 68 Core wire 70 Bolt insertion hole 72 Connection part 74 Wire connection part (connection part)
76 Nut 78 Terminal cover 80 Top cover 82 Side cover 84 Lock part 86 Hing part 88 Front cover wall 90 Side cover wall 92 Opening 94 Protruding wall part 96 Lock part 98 Side cover cover part 100a First wall part 100b First Second wall 100c Third wall 102 Lock 104 Locked

Claims (3)

The box body that houses the electric circuit and
A connection portion in which the electric circuit and an external electric wire are electrically connected,
The box body is provided rotatably via a hinge portion, and is provided with a terminal cover capable of switching between an open state in which the connection portion is exposed to the outside and a closed state in which the connection portion is covered.
The terminal cover has an opening in which the side cover covering the connection portion in the closed state is cut out.
The opening is an electrical connection box in which the terminal cover is closed and is covered with a protruding wall portion protruding from the box body. The electrical connection box according to claim 1, wherein the connection portion connects the L-shaped terminal provided on the terminal of the external electric wire and the electric circuit. The terminal cover has a lock portion and has a lock portion.
The electrical connection box according to claim 1 or 2, wherein the lock portion is detachably fitted to a locked portion provided on the box body.

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