JP2000358312A - Electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency of the insertion works of a terminal in an electrical junction box. SOLUTION: An external wall is not projected from the top face 12a of the case body 12 of the electrical junction box 11, while a pair of leading-out guide pins 18A, 18B are projected at positions brought near to the periphery of the top face 12a of the case body 12 at a position corresponding to the opening 13a of a cover case 13, and a fixing piece 19 extending to the outside is projected. A wire D installed to the case body 12 via a terminal 4 is passed between the lead out guide pins 18A, 18B and drawn out onto the top face of the fixing piece 19 and fixed by winding a tape 20, and the wire D is not extended from the top face 12a of the case body 12, while the wire D is inserted to the terminal 4 without the interference of the external wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection box, and more particularly, to an improvement in workability when inserting a terminal connected to a terminal of an electric wire into a terminal receiving port provided in a case body of the electric connection box. It is intended.

[0002]

2. Description of the Related Art An electric connection box mounted on a vehicle body or the like of an automobile is provided with electric wires via terminals and the like on one side of a case body constituting the electric connection box from the outside, and a relay and a fuse on the other side. There is a device in which an electric functional component such as the above is attached and connected to the above-mentioned electric wire or an internal circuit or the like housed in the case body via a relay terminal or the like. A cover case is attached to the case body to protect the wires and the like. When only a relay is mounted in the above-mentioned electrical connection box, it is generally called a relay box, and when only a fuse is mounted, it is called a fuse box.

FIG. 5 shows a conventional electric junction box 1 in which an electric wire D is attached to an upper surface 2a of a case body 2 and electric functional parts such as a relay 6 and a fuse 7 are attached to a lower surface.
A plurality of terminal accommodating openings 2b and connector fitting portions 2c are provided on the upper surface 2a of the case body 2, and the terminals 4 are connected to the terminals of the electric wire D, and the terminals 4 are respectively connected to the terminal accommodating openings 2b.
And the electric wire D is attached to the case main body 2.
The connector fitting portion 2c has a small number of electric wires D of about two.
The connector 5 connected to the terminal is fitted to attach the electric wire D. A cover case 3 having an opening 3a for drawing out the electric wire is attached to the upper surface 2a to protect the attached electric wire D.

[0004] Since the wires D attached to the terminal accommodating openings 2b and the like are not restrained, the wires D can easily spread in various directions, so that the expanded wires D protrude outside the upper surface 2a of the case body 2. Tend to be. In this state, when the cover case 3 for protecting the electric wire D or the like is attached to the case main body 2, the electric wire D is bitten. In order to prevent the electric wire D, an outer peripheral wall is provided around the upper surface 2a except for the electric wire lead-out portion 2d. 2e is provided to prevent the electric wire D from spreading outward from the periphery of the upper surface 2a.

[0005] A relay 6, a fuse 7 and the like attached to the lower surface of the case body 2 are connected to an electric wire D attached to the upper surface 2a via a terminal 4 or a relay terminal. In addition, the case main body 2 is not limited to the case where both the terminal accommodating port 2b and the connector fitting portion 2c are provided as described above, and there is also an electric connection box provided with only one of them.

[0006]

As shown in FIG. 6, when the terminal 4 is inserted into the terminal receiving opening 2b of the case body 2,
In the terminal accommodating opening 2b near the outer peripheral wall 2e, there is a problem that the worker's hand gripping the terminal 4 interferes with the outer peripheral wall 2e to make insertion difficult. In addition, there is a problem that the operation time required for terminal insertion becomes long. The above problem also occurs when the connector 5 is fitted to the connector fitting portion 2c located near the outer peripheral wall 2e.

The present invention has been made in view of the above-mentioned problems, and has as its object to improve the efficiency of terminal insertion work while preventing the electric wires from being caught when the cover case is mounted.

[0008]

SUMMARY OF THE INVENTION To solve the above-mentioned problems, the present invention is to insert a terminal connected to an electric wire terminal into a terminal accommodating opening formed on an upper surface of a case body of an electric connection box, In the electric connection box, the peripheral wall of the cover case is externally fitted and attached to the outer peripheral surface of the cover case, and the electric wire group is drawn out from the opening obtained by partially cutting out the peripheral wall of the cover case.
The outer peripheral wall is not protruded from the upper surface of the case main body, and a pair of draw-out guide pins is protruded at a position adjacent to the periphery of the upper surface of the case main body at a position corresponding to the opening of the cover case, and from the upper surface of the case main body. An outwardly extending fixing piece protrudes, and the wire group is drawn out to the upper surface of the fixing piece through the space between the draw-out guide pins and bound and fixed to the fixing piece. An electrical junction box is provided that is externally fitted to the body.

As described above, since the outer peripheral wall is not provided on the upper surface of the case main body, the terminal can be inserted efficiently without being interfered by the outer peripheral wall. In addition, by projecting a pair of draw-out guide pins at locations on the upper surface of the case body that will be the wire draw-out portions and projecting fixing pieces extending outward from the case body, the wires attached to the case body can be mounted. Pass between the draw-out guide pins,
By binding and fixing to the fixing piece with a tape or a band in a state of being stretched in a straight line, the electric wire is restrained and the spread of the electric wire can be suppressed. Therefore, it is possible to prevent the electric wires from being caught when the cover case is attached to the case body.

The draw-out guide pins are preferably formed in a round bar shape so as not to damage the electric wires. The draw-out guide pins may be formed in an inverted L-shape so that the horizontal portions are provided on the sides facing each other.

A connector fitting portion is also provided on the upper surface of the case main body, a connector connected to an end of the electric wire is fitted, and the electric wire connected to the connector also passes through the space between the guide pins and is taped to a fixing piece. The winding is fixed. In this way, by providing the drawer guide pin and the fixing piece in the case body having no outer peripheral wall as well as the terminal accommodating portion as well as the terminal accommodating portion as described above, the fitting operation of the connector in a state where the electric wire does not bite. Efficiency can be improved.

Further, according to the present invention, the upper surface of the case main body has a concave portion depressed from the outer peripheral surface, and guides the electric wire on the upper surface of the case main body so as to pass between the draw-out guide pins without crossing the concave portion. It is preferable that a straightening pin is protruded. In the case where the shape of the electric connection box itself has a concave portion which is partially recessed in consideration of the attachment to the vehicle body or the like, when the electric wire is stretched straight and tape-fixed with a fixing piece, the electric wire is depressed. It crosses the recess and is bitten by the cover case. However, as described above, by appropriately projecting a correction pin around the concave portion and passing the electric wire through the case side of the correction pin, the electric wire is positioned on the upper surface of the case main body without crossing the concave portion. As a result, it can be prevented from being caught in the cover case. In addition,
The number of protrusions of the correction pins is appropriately provided in accordance with the shape and number of the concave portions.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an electric connection box 11 according to a first embodiment of the present invention, in which an electric wire D is attached to a case main body 12, and a peripheral wall 13b of a cover case 13 is externally fitted and attached. Electrical functional components such as a relay 6, a fuse 7, and a diode are attached to the lower surface of the case body 12. When mounted on a vehicle, the case body 12 is turned upside down, and the lower surface of the case body 12 becomes the upper surface.

The case body 12 is formed in a substantially rectangular parallelepiped shape with a resin, and a plurality of open terminal accommodating ports 12b and a connector fitting portion 12c are provided on the upper surface 12a.
In addition, a plurality of attachment portions (not shown) for electrical functional components such as the relay 6 and the fuse 7 are provided on the lower surface.

The upper surface 12a of the case body 12 is not provided with a peripheral wall as in the related art, and the upper surface 12a serving as a place for drawing out the electric wire D from the case body corresponding to the opening 13a of the cover case 13 is provided. A pair of draw-out guide pins 18A, 18B is protruded at a position close to the periphery of the cover case 13 and at a position not to interfere with the cover case 13 serving as a lower cover.

The draw-out guide pins 18A and 18B are
The cover has a cross-sectional area that can obtain sufficient strength to orient the plurality of electric wires D, and the projecting height is higher than that of the bundled electric wires D and lower than the cover case 13 and the peripheral wall 13b. It does not interfere with the case 13, and is set to about 30 mm in the present embodiment. In addition, the shape of the extraction guide pins 18A and 18B is made to be a round bar shape so as not to damage the electric wire D. In addition, other than this shape, a square bar or the like may be used. Further, the pull-out guide pins 18A, 1
8B corresponds to the electric wire D attached to the case body 12.
Is set in consideration of the number of
mm. The draw-out guide pins 18
A and 18B are formed integrally with the case body 12,
The drawer guide pins 18A and 18B are separately attached to the case body 12
You may make it attach to.

The draw-out guide pins 18A and 18B are
In addition to the above shape, as shown in FIG.
a, 18B-a.
Ab and 18B-b may be provided to form an inverted L-shape. By doing so, it is possible to prevent the electric wire D passed between the extraction guide pins 18A and 18B from coming off.

Further, the case body 12 is provided with a fixing piece 19 projecting outward from the projecting position of the draw-out guide pins 18A, 18B. The fixing piece 19 is provided integrally with the case main body 12 so as to have a width dimension corresponding to the number of the electric wires D attached to the case main body 12. The projecting direction is the same as that of the electric connection box 1.
1 is set in such a direction that the electric wire D can be routed smoothly in the state of attachment to the vehicle body.

The cover case 13 attached to the case main body 12 is formed of resin and has a peripheral wall 13b surrounding the case main body 12. A part of the peripheral wall 13b is opened to draw out the electric wire D. 13a is provided.

In order to assemble the electric junction box 11 by attaching the electric wire D to the case main body 12, as shown in FIG.
Are sequentially inserted into the terminal accommodating opening 12b on the upper surface 12a of the first housing.
At this time, the terminal accommodating port 12b located on the periphery of the upper surface 12a
Even if the terminal 4 is inserted, the insertion operation can be performed smoothly because there is no outer peripheral wall. In addition, the connector 5 attached to the terminal of the small number of wires D of about two
2c. Also at the time of this fitting, the outer peripheral wall does not exist similarly to the above, so that the fitting can be performed smoothly.

The electric wire D attached to the case main body 12 via the terminal 4 and the connector 5 as described above is connected to the electric wire D shown in FIG.
As shown in the figure, the wire D is passed between the guide pins 18A and 18B and pulled out to the upper surface 19a of the fixing piece 19, and the wire D is straightened so that no load is applied to the connection portions between the wire D and the terminals 4 and the connector 5. The wire D is tightly stretched so that the wire D does not protrude outward from the upper surface 12a, and a tape 20 is wound around the fixing piece 19 to bind and fix the wire D. In addition,
This binding and fixing may be performed by a band. Thereafter, as shown in FIG. 1, the cover case 13 is externally fitted around the upper surface 2 a of the case body 12 where the electric wire D does not protrude. Also, electrical functional components such as a relay 6 and a fuse 7 are attached to the lower surface 12f of the case
The electric junction box shown in (C) is completed. Note that the attachment of the electrical functional components such as the relay 6 does not necessarily need to be performed in the above steps, and the order may be appropriately changed in consideration of the manufacturing process and the like.

The electric connection box 11 is provided with both the terminal accommodating port 12b and the connector fitting portion 12c on the upper surface 12a of the case main body 12. Of course, the terminal connecting port or the connector fitting portion is provided. The same form as described above can be applied to an electric junction box having only one of them.

FIG. 4A shows an electric junction box 11 'according to a second embodiment of the present invention. This electrical junction box 1
1 'is composed of a case body 12' and a cover case 13 'as in the first embodiment, and is provided with a concave portion 21' having a depressed outer peripheral surface in consideration of, for example, attachment to a vehicle body. . The upper surface 12a 'of the case body 12'
A correction guide pin 22 'protrudes around 1'.

The straightening guide pin 22 has the same shape, size, and the like as the pull-out guide pins 18A and 18B. In addition, the projecting position is set so that the electric wire D attached to the upper surface 12a is oriented by the straightening guide pins 22 so as not to cross the concave portion 21 '. Specifically, as shown in FIG. 4 (B), the electric wire D-1 attached to the upper left terminal accommodating port 12b-1 ′ is stretched in a straight line by tape-fixing the fixing piece 19 ′. As shown by the two-dot chain line in the figure, the concave portion 21 ′
To cross. In the upper right corner around this recess 21 ',
In addition, the straightening guide pin 22 'is erected at a position where the straightening guide pin 22' does not interfere with the cover case 13 ', and the electric wire D-1 is guided through the case side of the straightening guide pin 22'.
Electric wire D passing between the extraction guide pins 18A 'and 18B'
Even when -1 is stretched in a straight line, the electric wire D-1 does not cross the recess 21 '.

The electric connection box 11 'of the second embodiment has a case body 12' and a cover case having the same form as the electric connection box 11 of the first embodiment except for the straightening guide pins 22 'and the concave portions 21'. 13 '. In addition, when the concave portion 21 'is located at a position other than the position shown in FIG. 4B, the correction guide pin 22' may be provided at a required position as appropriate. When there are a plurality of concave portions 21 ', or When the shape of the concave portion 21 'is complicated, a plurality of correction guide pins 22' may be provided.

[0026]

As is clear from the above description, according to the electric connection box of the present invention, since the outer peripheral wall is not provided on the case main body, the terminal attached to the end of the electric wire is located at the position of the terminal accommodating opening. Regardless, even at the peripheral portion, the terminal can be easily inserted, and the efficiency of the terminal insertion operation can be increased. Moreover, since each wire can be prevented from protruding from the upper surface of the case main body by winding the tape around the draw-out guide pin and the fixing piece, the cover case can be easily fitted to the case main body without biting the wires. Further, since the present invention can be similarly applied to an electric connection box in which a connector connected to a terminal of an electric wire is attached to a connector fitting portion, the efficiency of the connector attaching operation can be improved as described above.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electric junction box according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part of the electric connection box of the first embodiment.

FIGS. 3A, 3B, and 3C are perspective views showing a process of attaching an electric wire to an electric connection box, and the like.

FIG. 4 is an electric junction box according to a second embodiment of the present invention,
(A) is an exploded perspective view, (B) is a schematic plan view.

FIG. 5 is an exploded perspective view of a conventional electric junction box.

FIG. 6 is a perspective view of a main part showing a problem of a conventional electric junction box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 11 Electric connection box 2, 12 Case main body 2a, 12a Upper surface 2b, 12b Terminal accommodating opening 2c, 12c Connector fitting part 3, 13 Cover case 4 Terminal 5 Connector 18A, 18B Pull-out guide pin 19 Fixing piece 20 Tape 21 ' Recess 22 'straightening pin wire D

Claims (3)

[Claims] 1. A terminal connected to an electric wire terminal is inserted into a terminal accommodating opening opened on an upper surface of a case main body of an electric junction box, and a peripheral wall of a cover case is externally fitted and attached to an outer peripheral surface of the case main body. In the electric connection box, in which the electric wire group is drawn out from the opening obtained by cutting out a part of the peripheral wall of the cover case, the outer peripheral wall is not protruded from the upper surface of the case body, and the case at a position corresponding to the opening of the cover case. A pair of draw-out guide pins is protruded at a position close to the periphery of the upper surface of the main body, and a fixing piece extending outward from the upper surface of the case main body is protruded, and the wire group passes through the space between the draw-out guide pins. An electric connection box in which the cover case is externally fitted to the case body in this state. 2. A connector fitting portion is also provided on the upper surface of the case main body, a connector connected to an end of the electric wire is fitted, and the electric wire connected to the connector is also passed through the space between the guide pins and taped to a fixing piece. Claim 1 which is wound and fixed
Electrical connection box as described in. 3. An upper surface of the case main body has a concave portion depressed from an outer peripheral surface, and a straightening pin for guiding an electric wire on the upper surface of the case main body to pass between the draw-out guide pins without crossing the concave portion protrudes. The electrical junction box according to claim 1 or 2, wherein the electrical junction box is provided.