JP2019050660A - Electric connection box and wiring harness - Google Patents

Abstract

To provide an electric connection box and a wiring harness capable of improving the assemblability of an electronic component.SOLUTION: An electric connection box 1 has a pair of opening portions 23 which are respectively provided to at least one pair of mutually opposed wall portions 21b of a tube portion 21 and which pass through the wall portions 21b in opposite directions. The pair of opening portions 23 lock protrusion portions 13 provided on side surfaces of an electronic component 10. The tube portion 21 has slits 29 which are respectively provided in the wall portions 21b and which each divide, between the insertion port 21a-side end and the opening portion 23-side end, each of the wall portions 21b along the insertion direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electrical connection box and a wire harness.

  Conventionally, an electric connection box (junction box, fuse box, relay box, etc.) mounted on a vehicle such as an automobile and collectively containing connection processing parts such as wire harnesses, electronic parts such as fuses, relays, and electronic control units Also known). Such an electric connection box is provided with, for example, a cylindrical mounting portion for mounting an electronic component such as a relay (for example, Patent Document 1).

Patent No. 5221255

  By the way, when the worker mounts the electronic component in the electrical connection box, for example, the electronic component is inserted and fitted while spreading the cylindrical mounting portion outward, but in terms of the assemblability of the electronic component There is room for improvement.

  An object of the present invention is to provide an electrical connection box and a wire harness that can improve the assemblability of electronic components.

  In order to achieve the above object, an electrical connection box according to the present invention includes an electronic component, a tubular portion formed in a tubular shape, and a tubular portion provided with an insertion port into which the electronic component is inserted along the insertion direction; A support portion for supporting the electronic component inserted into the cylindrical portion from the insertion port, and at least a pair of opposing wall portions of the cylindrical portion. A pair of openings facing each other and penetrating through the wall in the opposite direction, the pair of openings locking the projections provided on the side surface of the electronic component, and the cylindrical portion A slit is provided on each of the wall portions and has a slit for dividing the wall portion along the insertion direction between an end portion on the insertion port side and an end portion on the opening portion side. .

  In the electric connection box, the pair of the wall portions is provided along the slit and has a pair of pressing protrusions which project in the opposite direction facing each other from the end portion on the opening side, Each of the pressing projections preferably contacts and abuts against the projection in the insertion direction in a locked state in which the opening locks the projection of the electronic component.

  In the electric connection box, preferably, the width of the slit in the orthogonal direction orthogonal to the insertion direction is smaller than the width in the orthogonal direction of the protrusion of the electronic component.

  In order to achieve the above object, a wire harness according to the present invention includes an electric wire, an electronic component electrically connected to the electric wire, and an insertion port formed in a tubular shape and into which the electronic component is inserted along an insertion direction A cylindrical portion on which the second portion is provided, and a supporting portion provided on the opposite side of the cylindrical portion to the insertion port and supporting the electronic component inserted into the cylindrical portion from the insertion port, and the cylindrical portion face each other An electrical connection box provided on at least one set of wall portions and having a pair of openings facing each other and penetrating the wall in the opposite direction, the pair of openings being the side surfaces of the electronic component The cylindrical portion is provided on each of the wall portions, and is inserted between the end on the insertion port side and the end on the opening side along the insertion direction. It has a slit which divides the said wall part, It is characterized by the above-mentioned.

  According to the electrical connection box and the wire harness according to the present invention, it is possible to improve the assemblability of the electronic component.

FIG. 1 is an exploded perspective view showing a schematic configuration of the electrical connection box according to the embodiment. FIG. 2 is a side view showing a schematic configuration of the electrical connection box according to the embodiment. FIG. 3 is a plan view showing a schematic configuration of the electrical connection box according to the embodiment. FIG. 4 is a partial cross-sectional view of the electrical connection box according to the embodiment. FIG. 5 is a plan view showing a function example of the electrical connection box according to the embodiment.

  Hereinafter, embodiments of an electrical connection box and a wire harness according to the present invention will be described in detail with reference to the drawings. The present invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily conceived by those skilled in the art or those that are substantially the same. Moreover, various omissions, replacements, and changes can be made to the components in the following embodiments without departing from the scope of the invention.

[Embodiment]
FIG. 1 is an exploded perspective view showing a schematic configuration of the electrical connection box according to the embodiment. FIG. 2 is a side view showing a schematic configuration of the electrical connection box according to the embodiment. FIG. 3 is a plan view showing a schematic configuration of the electrical connection box according to the embodiment. FIG. 4 is a partial cross-sectional view of the electrical connection box according to the embodiment. FIG. 5 is a plan view showing a function example of the electrical connection box according to the embodiment. FIG. 2 and FIG. 5 are diagrams showing a mounting state in which the electronic component is mounted on the electrical connection box. FIG. 3 is a view showing a state in which the electronic component is removed from the electrical connection box. FIG. 4 is a view showing a state in the middle of mounting the electronic component on the electrical connection box. Here, the X direction in FIGS. 1 to 5 is the width direction of the electrical connection box in the present embodiment. The Y direction is a depth direction of the electrical connection box in the present embodiment, and is a direction orthogonal to the X direction. The Z direction is the insertion direction of the electronic component in the present embodiment, and is a direction orthogonal to the X direction and the Y direction. In the Z direction, the upper direction is the Z1 direction, and the lower direction is the Z2 direction.

  The electric connection box 1 according to the present embodiment is mounted on a vehicle (not shown) such as a car. The electric connection box 1 is incorporated in the wire harness 100, and collects and accommodates electronic components 10 such as a connector, a fuse, a relay, an electronic control unit and the like that constitute a connection processing component such as the electric wire 101. The electric connection box 1 is installed, for example, in an engine room of a vehicle or a lower portion of a vehicle body, and is connected between a power source such as a battery and various electronic devices mounted in the vehicle. The electrical connection box 1 distributes the power supplied from the power supply to various electronic devices in the vehicle. The electrical connection box 1 may also be called a junction box, a fuse box, a relay box or the like, but in the present embodiment, these are collectively referred to as the electrical connection box 1.

  As shown in FIG. 1, the electric connection box 1 according to the present embodiment is configured to include an upper cover 2, a holding unit 20, and an electronic component 10. Upper cover 2 constitutes a housing that accommodates a bus bar (not shown) inside when assembled to a lower cover (not shown). The bus bar is a metal conductor electrically connected to the electric component 101 and the electric wire 101 that constitutes the wire harness 100. The bus bar is held in the housing. The bus bar electrically connects the electric wire 101 of the wire harness 100 and the electronic component 10 mounted on the holding unit 20 to each other according to a predetermined pattern. The upper cover 2 is made of insulating synthetic resin or the like, and is molded by known injection molding. The upper cover 2 holds the electronic component 10. The upper cover 2 includes a holding portion 20, a ceiling wall 24, and an outer wall 25. The upper cover 2 is formed in a box shape opened in the Z2 direction by the ceiling wall 24 and a plurality of outer walls 25 standing in the Z2 direction from the outer edge of the ceiling wall 24 and continuous with each other.

  The holding portion 20 holds the electronic component 10 and is provided at least one ceiling wall 24 in the Z1 direction of the upper cover 2. The holding portion 20 is configured to include a cylindrical portion 21, a support portion 22, and a pair of openings 23.

  The cylindrical portion 21 is formed in a cylindrical shape and is provided with an insertion port 21a into which the electronic component 10 is inserted along the insertion direction, and a support portion 22 is provided on the opposite side to the insertion port 21a. The insertion port 21a is a portion which opens the Z1 direction of the cylindrical portion 21 in a rectangular shape. The cylindrical portion 21 includes a plurality of rectangular plate-like wall portions 21 b connected to each other, and is formed in a cylindrical shape. The cylindrical portion 21 has, for example, a rectangular shape when viewed from the Z1 direction. The cylindrical portion 21 is erected on the ceiling wall 24 of the upper cover 2 so that the wall portion 21 b extends in the insertion direction. The ceiling wall 24 is formed in a direction (for example, Y direction) orthogonal to the insertion direction from the wall 21 b of the cylinder 21 to the outside, and closes the space in the lower cover. The cylindrical portion 21 may be integrally formed on the ceiling wall 24 of the upper cover 2, or may be assembled separately on the ceiling wall 24 of the upper cover 2. The cylindrical portion 21 of the present embodiment is integrally formed on the ceiling wall 24 of the upper cover 2.

  The cylindrical portion 21 is provided on each of the wall portions 21b, and has slits 29 for dividing the wall portion 21b along the insertion direction between the end on the insertion port 21a side and the end on the opening 23 side. The slits 29 are respectively provided on the opposing wall portions 21 b. As shown in FIG. 2, in the slit 29 of the present embodiment, the width a in the orthogonal direction orthogonal to the insertion direction is smaller than the width b in the orthogonal direction of the protrusion 13 of the electronic component 10.

  The cylindrical portion 21 is provided with a pair of opposing pressing protrusions 21c on the inside of the opposing wall 21b. As shown in FIGS. 1 to 3, the pair of pressing protrusions 21 c in the present embodiment is provided along the slit 29 and protrudes in the opposing direction facing each other from the end on the opening 23 side. Each pressing projection 21 c is divided into two parts in the depth direction (Y direction) orthogonal to the insertion direction across the slit 29 in the wall 21 b provided with the opening 23. Each pressing projection 21 c is opposed to the projection 13 in the insertion direction in a locked state where the opening 23 locks the projection 13 of the electronic component 10 in the wall 21 b provided with the opening 23. Abut. Each pressing projection 21c has an inclined surface 21d provided in the Z1 direction and a vertical surface 21e provided in the opposing direction in which the pressing projections 21c face each other. The inclined surface 21 d is a flat surface which is inclined from the Z1 direction toward the Z2 direction as it goes to the inside of the cylindrical portion 21. The vertical surface 21 e is a flat surface parallel to the inner surface of the wall 21 b of the cylinder 21. The pair of inclined surfaces 21 d abuts on the outer periphery of the electronic component 10 inserted inside the cylindrical portion 21 and guides the electronic component 10 to the center of the cylindrical portion 21 in the X or Y direction. The pair of vertical surfaces 21 e is supported such that the electronic component 10 is positioned at the center of the cylindrical portion 21 in the X direction or Y direction.

  When viewed from the Z1 direction, the cylindrical portion 21 has substantially the same size as the size of the inside of the cylindrical portion 21 and the size of the outer shape of the electronic component 10. That is, in the cylindrical portion 21, the length in the Y direction inside the cylindrical portion 21 (excluding the length in the Y direction of the pair of pressing protrusions 21 c) is the length of the main portion 11 of the electronic component 10 in the Y direction. It is almost the same. The cylindrical portion 21 has a length in the X direction on the inner side of the cylindrical portion 21 (excluding the length in the X direction of the pair of pressing protrusions 21 c) is the length in the X direction of the main body portion 11 of the electronic component 10 (Except for the length in the X direction of the pair of protrusions 13).

  The support portion 22 is an inner portion surrounded by the wall portion 21 b in the ceiling wall 24 and is formed in a rectangular shape. The support portion 22 of the present embodiment is provided on the opposite side to the insertion port 21 a of the cylindrical portion 21, and supports the electronic component 10 inserted into the cylindrical portion 21 from the insertion port 21 a. As shown in FIG. 3, the support portion 22 is provided with a plurality of insertion holes 21 f through which the terminals 12 of the electronic component 10 are respectively inserted. Each terminal 12 of the electronic component 10 is inserted through each insertion hole 21 f when the electronic component 10 is attached to the holding unit 20.

  The pair of openings 23 are respectively provided in the wall portions 21 b of the cylindrical portion 21 corresponding to each other. Each opening 23 is provided in the wall 21 b facing in the X direction. Each opening 23 is provided substantially in the center of the wall 21b in the X direction and in the Z2 direction of the wall 21b. Each opening 23 penetrates the wall 21 b in the opposing direction in which the openings 23 face each other. The opening 23 of the present embodiment locks the protrusion 13 provided on the side surface of the electronic component 10. The wall 21 b has the opening 23 and the slit 29 is not provided, as in the conventional case, and has a resin meeting portion near the center in the Y direction. The resin association portion is a portion formed by association of two fluid thermoplastic resins in a mold by injection molding. In the wall portion 21b of the present embodiment, as shown in FIG. 2, for example, two fluid thermoplastic resins flow in the direction of the arrow R, but the presence of the slits 29 does not cause them to associate, and resin association No part is formed.

  The electronic component 10 is, for example, a relay. The electronic component 10 has a block-shaped main body portion 11 accommodating an internal coil and the like inside, and a plurality of strip-shaped terminals having conductivity protruding from the bottom surface (not shown) of the main body portion 11 in the Z2 direction. 12 and a pair of locking projections 13 provided on the side surface of the main body 11 and facing each other. Each of the terminals 12 is passed through each of the insertion holes 21 f of the support portion 22 when the electronic component 10 is mounted to the holding portion 20, and is electrically connected to a bus bar (not shown). The protrusions 13 are disposed to face each other along the long side direction of the main body 11. When each electronic component 10 is attached to the holding unit 20, each protrusion 13 is engaged with the opening 23 of the holding unit 20, which will be described later, which faces each other, and the cylindrical portion of the holding unit 20 Fix in 21

  Next, assembly of the electronic component 10 in the electrical connection box 1 according to the present embodiment will be described. As shown in FIG. 1, in the electric connection box 1, the electronic component 10 is opposed to the holding unit 20, and the electronic component 10 is in the cylindrical portion 21 of the holding unit 20 from the Z1 direction toward the Z2 direction. 10 are inserted from the respective terminals 12 side. The electric connection box 1 guides the electronic component 10 to the center of the direction (X direction and Y direction) orthogonal to the insertion direction of the cylindrical portion 21 by the pressing projection 21 c in the cylindrical portion 21.

  In the electric connection box 1, as shown in FIG. 4, the terminals 12 of the electronic component 10 are passed through the insertion holes 21 f of the support portion 22, and the main portion 11 of the electronic component 10 is inserted into the cylindrical portion 21 of the holding portion 20. As Y is inserted, both side surfaces in the Y direction of the electronic component 10 abut on the pressing projections 21 c of the wall 21 b facing in the Y direction. At the same time, the pair of protrusions 13 on both side surfaces in the X direction of the electronic component 10 abuts on the pressing protrusions 21 c of the wall 21 b facing in the X direction. Furthermore, when the main body portion 11 of the electronic component 10 is inserted into the cylindrical portion 21 of the holding portion 20, each protrusion 13 of the electronic component 10 slides on the inclined surface 21d and the vertical surface 21e of the pressing protrusion 21c. While overcoming, move in the Z2 direction. In the electric connection box 1, when the projections 13 of the electronic component 10 ride over the pressing projections 21 c while sliding, stress is generated in the vicinity of the center of each wall 21 b in the Y direction. Since the electrical connection box 1 of the present embodiment has the slits 29 in the wall 21b provided with the opening 23, even if the wall 21b is pressed outward by each protrusion 13 of the electronic component 10, as shown in FIG. As shown, the end on the slit 29 side of the wall 21 b elastically deforms outward in the X direction. Thereby, the electrical connection box 1 can relieve the stress applied to the wall 21b even if each projection 13 of the electronic component 10 abuts on the pressing projection 21c of the wall 21b.

  In the electric connection box 1, when the main body 11 of the electronic component 10 is further inserted into the cylindrical portion 21, the protrusions 13 of the electronic component 10 pass over the pressing protrusions 21 c of the wall 21 b to form openings. A support 22 locks the bottom surface of the electronic component 10. In the electric connection box 1, each pressing projection 21 c holds the main body 11 of the electronic component 10 in the cylindrical portion 21 by the elastic restoring force of each wall 21 b, and the pair of opposed openings 23 are electronic The main body portion 11 of the electronic component 10 is fixed in the cylindrical portion 21 by engaging with each of the protrusions 13 of the component 10. Thereby, the electronic component 10 is attached to the holding portion 20 of the electric connection box 1.

  As described above, the electrical connection box 1 and the wire harness 100 according to the present embodiment are respectively provided on at least one pair of wall portions 21b facing each other of the cylindrical portion 21, and face each other in the opposing direction. It has a pair of openings 23 penetrating. The pair of openings 23 engage the protrusions 13 provided on the side surface of the electronic component 10, and the cylinder 21 is provided on each of the wall 21b, and the end on the insertion port 21a side and the opening 23 side And a slit 29 for dividing the wall 21b along the insertion direction. As a result, when the electronic component 10 is inserted into the cylindrical portion 21, the wall portion 21 b of the cylindrical portion 21 is easily elastically deformed, and the insertion force of the electronic component 10 into the cylindrical portion 21. The reaction force and the stress generated in the wall portion 21 b are reduced, whereby the assemblability of the electronic component 10 to the electrical connection box 1 can be improved.

  Further, in the electrical connection box 1 and the wire harness 100 according to the present embodiment, each pressing projection 21 c is inserted with the projection 13 in a locked state in which the opening 23 locks the projection 13 of the electronic component 10. Since it faces and abuts in the direction, the main body portion 11 of the electronic component 10 can be reliably locked in the cylindrical portion 21 of the holding portion 20.

  Further, in the electric connection box 1 and the wire harness 100 according to the present embodiment, the slit 29 is formed so that the width a in the orthogonal direction orthogonal to the insertion direction is narrower than the width b in the orthogonal direction of the protrusion 13 of the electronic component 10 Ru. Thereby, even if the slit 29 is provided in the opening 23 for locking the projection 13 of the electronic component 10, both ends of the projection 13 sandwiching the slit 29 on the insertion port 21a side of the opening 23 and The pressing projection 21 c sandwiching the slit 29 can be abutted, and the main body 11 of the electronic component 10 can be reliably locked in the cylindrical portion 21 of the holding portion 20.

  Further, in the electric connection box 1 and the wire harness 100 according to the present embodiment, the cylindrical portion 21 is provided in each of the wall portions 21b, and between the end on the insertion opening 21a side and the end on the opening 23 side. Since the slits 29 dividing the wall 21b along the insertion direction are provided, the wall 21b having the opening 23 can be formed without forming the above-described resin meeting part.

[Modification]
In the above embodiment, the wall 21b provided with the opening 23 is formed by dividing the pressing projection 21c into two parts in the depth direction (Y direction) orthogonal to the insertion direction across the slit 29. However, it may be formed only at one place.

DESCRIPTION OF SYMBOLS 1 electrical connection box 2 upper cover 10 electronic component 11 main body 12 terminal 13 projection part 20 holding part 21 cylinder part 21a insertion port 21b wall part 21c press projection part 21d inclined surface 21e vertical surface 21f insertion hole 22 support part 23 opening 25 Outer wall 29 Slit 100 Wire harness 101 Electric wire

Claims (4)

Electronic parts,
A cylindrical portion formed in a cylindrical shape and provided with an insertion port into which the electronic component is inserted along the insertion direction;
A support portion provided on the opposite side to the insertion port of the cylindrical portion, for supporting the electronic component inserted into the cylindrical portion from the insertion port;
A pair of openings respectively provided on at least one set of opposing wall portions of the cylindrical portion and penetrating through the wall portions in opposing directions and facing each other;
Have
The pair of openings is
Locking projections provided on side surfaces of the electronic component;
The cylinder portion is
A slit is provided on each of the walls, and is provided between the end on the insertion port side and the end on the opening side to divide the wall along the insertion direction,
Electrical connection box characterized by A set of said walls is
It has a pair of pressing projections which are provided along the slit and which project from the end on the opening side in opposing directions facing each other,
Each said pressing projection is
In the locked state in which the opening locks the protrusion of the electronic component, the opening faces and abuts against the protrusion in the insertion direction.
The electrical connection box according to claim 1, characterized in that: The slit is
The width in the orthogonal direction orthogonal to the insertion direction is formed narrower than the width in the orthogonal direction of the protrusion of the electronic component.
The electrical connection box according to claim 1. With the electric wire,
The electronic component to be electrically connected to the electric wire, a cylindrical portion formed in a cylindrical shape and provided with an insertion port into which the electronic component is inserted along the insertion direction, and the opposite side of the cylindrical portion to the insertion port Provided on a supporting portion for supporting the electronic component inserted into the cylindrical portion from the insertion port, and provided on at least one pair of opposing wall portions of the cylindrical portion, the wall facing each other in the opposing direction An electrical connection box having a pair of openings extending through the
Equipped with
The pair of openings is
Locking projections provided on side surfaces of the electronic component;
The cylinder portion is
A slit is provided on each of the walls, and is provided between the end on the insertion port side and the end on the opening side to divide the wall along the insertion direction,
A wire harness characterized by

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