JP2016181983A - Electrical connection box and wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical connection box and a wiring harness on which a maintenance work can be easily performed.SOLUTION: A wiring harness includes an electrical connection box 100. The electrical connection box 100 includes a box body 101, and an electronic component unit 1 assembled to a lower cover 105 and a body 103 of the box body 101, a fuse 20 being approached from the upper side in the vertical direction and mounted to an upper end portion in the vertical direction of the electronic component unit 1, and a relay 30 being approached from a direction intersecting to the vertical direction and mounted to a lower side in the vertical direction of the fuse 20. The box body 101 includes a unit mounting portion 40 for mounting the electronic component unit 1, an opening 50 which is provided to outer walls 103a, 105a along the vertical direction and exposes relays 30 of the electronic component unit 1 mounted in the unit mounting portion 40 to the outside, and a cover member 60 which is mounted on the outer walls 103a, 105a to cover the opening 50.SELECTED DRAWING: Figure 3

Description

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

  A vehicle such as an automobile is equipped with an electrical junction box that distributes power from a power source such as a battery to each electronic device. As this type of electrical connection box, one in which a plurality of electronic components are stacked in the vertical direction and assembled to the box body is used.

JP 2011-10514 A

  By the way, in the electrical junction box described in the above-mentioned Patent Document 1, for example, the electronic component on the upper side in the vertical direction and the electronic component on the lower side in the vertical direction are respectively mounted on the cassette block, and the cassette block is mounted on the box body. Then, a plurality of electronic components are stacked in the vertical direction and assembled to the box body. For this reason, when performing maintenance work such as replacing the electronic component on the lower side in the vertical direction, it is necessary to remove the cassette block on the upper side in the vertical direction from the box body, which may make it difficult to perform the maintenance work. However, it is desired that the electrical junction box can easily perform maintenance work such as replacement of electronic components.

  This invention is made | formed in view of said situation, Comprising: It aims at providing the electrical junction box and wire harness which can perform a maintenance operation | work easily.

  In order to achieve the above object, an electrical junction box according to the present invention includes a box body to which an electronic component is assembled, and the box body, and the first electronic component is approached from the upper side in the vertical direction and the upper end in the vertical direction. And an electronic component unit that is mounted on a lower part of the first electronic component and is mounted on the lower side in the vertical direction of the first electronic component. A unit mounting portion for mounting the electronic component unit, an opening provided on an outer wall along the vertical direction and exposing the second electronic component of the electronic component unit mounted on the unit mounting portion to the outside. And a cover member that is detachably attached to the outer wall and covers the opening when attached to the outer wall.

  Moreover, in the said electrical junction box, the said opening is provided in the perpendicular direction lower end part of the said outer wall, The said outer wall is arrange | positioned at the perpendicular direction upper side of the said opening.

  In order to achieve the above object, a wire harness according to the present invention includes a box body to which an electronic component is assembled, and the box electronic body, the first electronic component being approached from the upper side in the vertical direction and the upper end in the vertical direction. And an electronic component unit that is mounted on the lower side in the vertical direction of the first electronic component by being approached from the direction in which the second electronic component intersects the vertical direction. An electric wire electrically connected to the electronic component, and the box body is provided on a unit mounting portion for mounting the electronic component unit and an outer wall along a vertical direction, and is mounted on the unit mounting portion. An opening that exposes the second electronic component of the electronic component unit to the outside, and a cover member that is detachable from the outer wall and covers the opening when attached to the outer wall. And wherein the door.

  The electrical junction box according to the present invention is mounted close to the vertical direction lower side of the first electronic component mounted on the vertical upper end portion of the electronic component unit from the direction intersecting the vertical direction and mounts the second electronic component. . The electrical junction box has an opening on the outer wall that exposes the second electronic component to the outside when the electronic component unit is mounted on the unit mounting portion of the box body. Furthermore, the electrical junction box includes a cover member that covers the opening when mounted on the outer wall of the box body. Accordingly, when the cover member is removed from the box body, the electric connection box can expose the second electronic component through the opening, and can exchange the second electronic component through the opening. As a result, the electrical junction box can perform maintenance work such as replacement work of the second electronic component without removing the first electronic component and the electronic component unit from the box body, and can easily perform the maintenance work. There is an effect that can be.

FIG. 1 is a perspective view illustrating a schematic configuration of an electrical junction box according to the embodiment. FIG. 2 is a perspective view illustrating a schematic configuration of an electronic component unit of the electrical junction box according to the embodiment. FIG. 3 is a perspective view illustrating a state in which the cover member is removed from the box body of the electrical junction box according to the embodiment. FIG. 4 is a front view showing a second electronic component attached to the electronic component unit of the electrical junction box shown in FIG.

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

[Embodiment]
FIG. 1 is a perspective view illustrating a schematic configuration of an electrical junction box according to the embodiment. FIG. 2 is a perspective view illustrating a schematic configuration of an electronic component unit of the electrical junction box according to the embodiment. FIG. 3 is a perspective view illustrating a state in which the cover member is removed from the box body of the electrical junction box according to the embodiment. FIG. 4 is a front view showing a second electronic component attached to the electronic component unit of the electrical junction box shown in FIG. 1 and 3 illustrate the upper cover of the electrical junction box with a two-dot chain line.

  The electric junction box 100 shown in FIG. 1 according to the present embodiment is mounted on a vehicle such as an automobile, and various types of electric power supplied from a power source such as a battery are mounted on the vehicle via various electronic components 102 and the like. To be distributed to electronic devices. Here, as shown in FIG. 1, the electrical connection box 100 is incorporated in a wire harness 150 and is an electrical component such as a connector, a fuse, a relay, a branching unit, or an electronic control unit that constitutes a connection processing component such as an electric wire 151. Are collected and housed inside. The electrical connection box 100 is installed, for example, in an engine room of a vehicle or a lower part 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 100 may be called a junction box, a fuse box, a relay box, or the like. In the present embodiment, these are collectively called an electrical connection box.

  In the electrical junction box 100 illustrated in FIG. 1, various electronic components 102 are accommodated in an accommodating space inside the box body 101. The box body 101 includes, for example, a body 103, an upper cover 104, a lower cover 105, and the like. The box body 101 has a three-layer divided structure in which the body 103, the upper cover 104, and the lower cover 105 are divided. The body 103, the upper cover 104, and the lower cover 105 are formed of an insulating synthetic resin. The body 103 is a main member that forms a housing space in which the electronic component 102 is assembled. The body 103 is formed in a substantially square cylindrical shape, and the opening is located on the upper side in the vertical direction and the lower side in the vertical direction in a state where the electric connection box 100 is connected to the engine room or the like. The upper cover 104 is a lid-like member that closes the opening on the upper side in the vertical direction of the body 103. The lower cover 105 is a dish-shaped (tray-shaped) member that is attached to the body 103 and closes the opening on the lower side in the vertical direction of the body 103. The box body 101 has an upper cover 104 in which the opening on the upper side in the vertical direction of the body 103 faces the opening on the upper cover 104 and the opening on the lower side in the vertical direction of the body 103 faces the opening in the lower cover 105. The lower cover 105 is assembled to the lower side of the body 103 in the vertical direction. In the box body 101, the upper cover 104 and the lower cover 105 are locked to the body 103 via various types of locking mechanisms 106. The direction in which the body 103, the upper cover 104, and the lower cover 105 are stacked is typically along the vertical direction in a state where the electrical connection box 100 is connected to an engine room or the like. Depending on the installation state of the junction box 100, the stacking direction may be installed with a predetermined angle with respect to the vertical direction.

  And as various electronic components 102 assembled | attached to the accommodation space part inside this box main body 101, as above-mentioned, with the connector, fuse, relay, branch part, electronic control unit, etc., the electronic component unit of this embodiment 1 is included. The electric junction box 100 has various cavities formed by a plurality of cavities formed by partition walls 107 having various shapes integrally formed with the body 103, blocks 108 having various shapes removably assembled to the body 103, and the like. The electronic component 102 is assembled. In this case, the partition wall 107, the block 108, and the like are also formed of an insulating synthetic resin like the body 103 and the like. In the electrical junction box 100, the terminal of the electric wire 151 that is routed through the opening 109 and connected to the electronic component 102 with respect to the cavity in which various electronic components 102 are assembled is vertically downward. And are electrically connected. The electrical junction box 100 having the above-described configuration is mounted on the vehicle with the fixing bracket portion 110 provided on the body 103 and the lower cover 105 fixed to the vehicle body. The electrical junction box 100 constitutes an electric wire 151 and the like that are electrically connected to the electronic component 102 and a wire harness 150 that is routed in a vehicle such as an automobile. That is, the wire harness 150 includes an electrical junction box 100 and a plurality of electric wires 151 that are electrically connected to the electronic component 102 of the electrical junction box 100.

  When the electronic component unit 1 according to the present embodiment is assembled in the housing space inside the box body 101, the body 103 and the lower cover 105 on the near side in FIG. 1 and FIG. Are superimposed on the inner side of the outer walls 103a and 105a along the vertical direction. The electronic component unit 1 is assembled to the box body 101 of the electrical junction box 100 and constitutes a part of a power distribution circuit that distributes the power supplied from the power source of the vehicle to various electronic devices in the vehicle.

  Specifically, as shown in FIG. 2, the electronic component unit 1 includes a housing 10 and fuses 20 (corresponding to first electronic components) as a plurality of electronic components 102 mounted on the vertical upper end of the housing 10. And a relay 30 (corresponding to a second electronic component) as a plurality of electronic components 102 mounted on the lower end portion in the vertical direction of the casing 10. Hereinafter, in the present specification, the vertical direction, the upper end in the vertical direction, the lower end in the vertical direction, the upper side in the vertical direction, the lower side in the vertical direction, the uppermost side in the vertical direction, and the lowermost side in the vertical direction are referred to The vertical direction, the vertical direction upper end, the vertical lower end, the vertical upper side, the vertical lower side, the vertical uppermost side, and the vertical lowermost side when the 100 is fixed to the vehicle body and mounted on the vehicle. . The vertical upper end means a portion including the uppermost portion in the vertical direction and the vicinity thereof, and the vertical lower end portion refers to a portion including the lowermost portion in the vertical direction and the vicinity thereof. .

  The housing 10 includes a rectangular tubular member 11 that is parallel to the vertical direction and has an opening 11a on the upper side in the vertical direction, and a fuse mounting block 12 that is attached to the upper end of the tubular member 11 in the vertical direction. And a relay mounting block 13 mounted on the lower end of the cylindrical member 11 in the vertical direction. The cylindrical member 11, the fuse mounting block 12, and the relay mounting block 13 are formed of an insulating synthetic resin. The cylindrical member 11 is provided with an opening 11b at the lower end in the vertical direction of the wall 11c facing the outer walls 103a and 105a when the electronic component unit 1 is assembled in the accommodation space inside the box body 101.

  The fuse mounting block 12 is mounted with a plurality of fuses 20. The fuse mounting block 12 is inserted into the opening 11 a along the vertical direction from the upper side in the vertical direction, and is attached to the upper end of the cylindrical member 11 in the vertical direction. When the fuse attachment block 12 is attached to the cylindrical member 11, the fuse 20 is attached to the fuse attachment block 12 by moving from the upper side in the vertical direction to the lower side along the vertical direction. As described above, the fuse 20 is attached to the upper end portion of the electronic component unit 1 in the vertical direction from the upper side in the vertical direction. Further, the fuse 20 mounted on the fuse mounting block 12 is removed from the fuse mounting block 12 by being moved upward along the vertical direction. The fuse mounting block 12 is mounted on the housing 10 via various types of locking mechanisms (not shown).

  The relay mounting block 13 is equipped with a plurality of relays 30. The relay mounting block 13 is brought close to the housing 10 along a direction intersecting with the vertical direction (in the present embodiment, orthogonal to the wall 11c), inserted into the opening 11b, and a cylindrical member. 11 is attached to the lower end of the vertical direction. When the relay mounting block 13 is mounted on the cylindrical member 11, the relay 30 is connected to the relay mounting block 13 along a direction intersecting the vertical direction (in the present embodiment, orthogonal to the wall 11c). It is brought close to and attached to the relay mounting block 13. In this way, the relay 30 is mounted on the lower side in the vertical direction of the fuse 20 of the electronic component unit 1 from the direction intersecting the vertical direction. Further, the relay 30 mounted on the relay mounting block 13 moves in a direction away from the relay mounting block 13 along a direction intersecting the vertical direction (in this embodiment, orthogonal to the wall 11c). As a result, the relay mounting block 13 is removed. The relay mounting block 13 is attached to the housing 10 via various types of locking mechanisms (not shown).

  Further, the electronic component unit 1 includes a conductive material (not shown) for electrically connecting the fuse 20 mounted on the fuse mounting block 12 and the relay 30 mounted on the relay mounting block 13 in the housing 10. The bus bar is housed.

  And the box main body 101 of the electrical connection box 100 is provided with the unit mounting part 40, the opening 50, and the cover member 60, as shown in FIG.1 and FIG.3. The unit mounting part 40 is a housing space part in which the electronic component unit 1 is mounted. Specifically, the unit mounting portion 40 is a cavity (space) that is provided across the body 103 and the lower cover 105 of the box body 101 and is open inside the box body 101 in the vertical direction. The unit mounting portion 40 connects at least a pair of partition walls 107 (hereinafter referred to as reference numeral 107a) projecting from the inner surface of the outer wall 103a of the body 103 toward the inside of the body 103 and the distal ends of the pair of partition walls 107a. The other partition wall 107 (hereinafter referred to as reference numeral 107b) is formed, and the partition walls 107a and 107b partition from other cavities. In the unit mounting portion 40, the electronic component unit 1 is inserted from the upper side in the vertical direction through the opening on the upper side in the vertical direction, and the electronic component unit 1 is accommodated between the partition walls 107a and 107b. The electronic component unit 1 is mounted on the unit mounting portion 40 via various types of locking mechanisms (not shown). When the electronic component unit 1 is mounted on the unit mounting portion 40, the outer walls 103 a and 105 a along the vertical direction of the body 103 and the lower cover 105 are mounted on the lower side in the vertical direction of the fuse 20 of the electronic component unit 1. This is an outer wall that overlaps the electronic component unit 1 along the moving direction of the relay 30.

  The opening 50 is provided on the outer walls 103a and 105a of the box body 101, and exposes the relay 30 of the electronic component unit 1 mounted on the unit mounting portion 40 to the outside. The opening 50 is provided at the lower end in the vertical direction of the outer walls 103 a and 105 a of the box body 101, and the outer wall 103 a of the body 103 is disposed on the upper side in the vertical direction of the opening 50.

  Specifically, the opening 50 is a hole that penetrates the outer wall 103 a of the body 103 and the outer wall 105 a of the lower cover 105 and communicates the inside of the unit mounting portion 40 and the outside of the box body 101. In the outer wall 105a of the lower cover 105, an opening 50 is provided over the entire length in the vertical direction. In the outer wall 103a of the body 103, the opening 50 is provided at the lower end in the vertical direction, and is not provided at the upper end in the vertical direction. For this purpose, an outer wall 103 a of the body 103 is provided on the upper side in the vertical direction of the opening 50. Further, the opening 50 is mounted on the lower side in the vertical direction of the fuse 20 of the electronic component unit 1 mounted on the unit mounting portion 40, that is, on the lower side in the vertical direction of the fuse 20 of the electronic component unit 1. It arrange | positions in the position which overlaps along the moving direction of the relay 30 at the time. Further, as shown in FIG. 4, the planar shape of the opening 50 is formed larger than the planar shape of the relay mounting block 13, and is formed in a rectangular shape in the present embodiment. The opening 50 exposes the relay mounting block 13. The opening 50 exposes the entire relay 30 mounted on the relay mounting block 13 to the outside by exposing the relay mounting block 13.

  Further, guide grooves 51 that extend along the vertical direction and guide both edges in the width direction of the cover member 60 are provided at both edges in the width direction of the opening 50. A support groove 52 that supports the lower end of the member 60 in the vertical direction is provided. The guide groove 51 is provided across the outer wall 103 a of the body 103 and the outer wall 105 a of the lower cover 105. The support groove 52 is provided in the outer wall 105a of the lower cover 105, and the upper side in the vertical direction is open.

  The cover member 60 covers the opening 50 when it is detachably attached to the outer walls 103a and 105a of the box body 101 and is attached to the outer walls 103a and 105a. Specifically, the cover member 60 is formed of an insulating synthetic resin and is formed in a flat plate shape having a size that can cover the opening 50. The cover member 60 is moved from the upper side to the lower side in the vertical direction of the body 103 and the lower cover 105 from which the upper cover 104 of the box body 101 is removed in a state where both surfaces are parallel to the outer walls 103a and 105a. Is guided by the guide groove 51 and attached to the box body 101. When the cover member 60 is attached to the box body 101, the lower end in the vertical direction is supported by the support groove 52. When the cover member 60 is attached to the box body 101, the surface of the cover member 60 becomes parallel to the outer walls 103a and 105a, and the upper edge in the vertical direction of the cover member 60 is the upper edge in the vertical direction of the outer wall 103a of the body 103. And become the same. Further, the cover member 60 is moved upward in the vertical direction along the guide groove 51 with respect to the body 103 and the lower cover 105, and is removed from the box body 101. Thus, the cover member 60 is attached to and detached from the box body 101 with the upper cover 104 removed. The cover member 60 is attached to the body 103 of the box body 101 via various types of locking mechanisms 61.

  In the electrical junction box 100 having the above-described configuration, various electronic components 102 are assembled in the accommodation space portion and the electronic component unit 1 is assembled in the unit mounting portion 40 in a state where the body 103 and the lower cover 105 are assembled. The electrical connection box 100 is assembled by, for example, attaching the upper cover 104 to the body 103 after the cover member 60 is assembled to the body 103 and the lower cover 105. The electrical junction box 100 assembled in this way is mounted on the vehicle with the fixing bracket 110 fixed to the vehicle body. For example, after the upper cover 104 and the cover member 60 are removed in order while the electrical junction box 100 is mounted on the vehicle, maintenance work for replacing the relay 30 of the electronic component unit 1 is performed.

  According to the electrical junction box 1 described above, the relay 30 is mounted close to the vertical direction lower side of the fuse 20 mounted on the vertical upper end of the electronic component unit 1 from the direction intersecting the vertical direction. Further, the electrical connection box 100 is provided with openings 50 on the outer walls 103a and 105a that expose the relay 30 to the outside when the electronic component unit 1 is mounted on the unit mounting portion 40 provided on the lower cover 105 and the body 103 of the box body 101. Yes. Furthermore, the electrical junction box 100 includes a cover member 60 that covers the opening 50 when attached to the outer walls 103a and 105a of the box body 101. Thus, the electrical connection box 100 can expose the relay 30 through the opening 50 when the cover member 60 is removed from the lower cover 105 and the body 103 of the box body 101. Further, in the electrical junction box 100, the relay 30 can be attached to and detached from the relay mounting block 13 of the electronic component unit 1 through the opening 50, and the relay 30 can be exchanged through the opening 50. As a result, the electrical connection box 100 can perform maintenance work such as replacement work of the relay 30 while removing the cover member 60 and mounting the fuse 20 and the electronic component unit 1 on the vehicle without removing them from the box body 101. It can be carried out. Therefore, the electrical junction box 100 has an effect that the maintenance work can be easily performed.

  Moreover, since the opening 50 is provided in the vertical direction lower end part of the outer walls 103a and 105a and the outer wall 103a is arrange | positioned on the vertical direction upper side of the opening 50, the electrical connection box 100 has the opening 50 which penetrates the outer walls 103a and 105a. Even if it provides, the rigidity of the body 103 of the box main body 101 can be ensured, and especially the body 103 of the box main body 101 can be prevented from being distorted. As a result, the electrical junction box 100 has an effect that the cover member 60 can be attached to and detached from the body 103 and the lower cover 105 while being mounted on the vehicle.

  Since the wire harness 150 described above includes the electrical junction box 100, there is an effect that maintenance work of the electrical junction box 100 can be easily performed.

  The electrical junction box 100 according to the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope described in the claims. For example, in the electrical junction box 100 according to the present invention, the body 103 of the box body 101 and the lower cover 104 may be integrally formed so that the box body 101 has a two-layer structure.

1 Electronic component unit 20 Fuse (first electronic component)
30 Relay (second electronic component)
40 Unit mounting portion 50 Opening 60 Cover member 100 Electrical connection box 101 Box body 102 Electronic component 103a Outer wall 105a Outer wall 150 Wire harness 151 Electric wire

Claims (3)

A box body in which electronic components are assembled;
The first electronic component is assembled from the upper side in the vertical direction and attached to the upper end in the vertical direction, and the second electronic component is approached from the direction intersecting the vertical direction. An electronic component unit mounted on the lower side in the vertical direction of one electronic component,
The box body is
A unit mounting portion for mounting the electronic component unit;
An opening provided on an outer wall along the vertical direction and exposing the second electronic component of the electronic component unit mounted on the unit mounting portion to the outside;
A cover member that is detachably attached to the outer wall and covers the opening when mounted on the outer wall.
Electrical junction box. The opening is provided at the lower end in the vertical direction of the outer wall,
The electrical junction box according to claim 1, wherein the outer wall is arranged on the upper side in the vertical direction of the opening. A box body to which the electronic component is assembled; and the first electronic component is assembled from the upper side in the vertical direction and attached to the upper end in the vertical direction, and the second electronic component is mounted in the vertical direction. An electronic connection unit comprising an electronic component unit that is approached from the intersecting direction and is mounted on the lower side in the vertical direction of the first electronic component;
An electric wire electrically connected to the electronic component,
The box body is
A unit mounting portion for mounting the electronic component unit;
An opening provided on an outer wall along the vertical direction and exposing the second electronic component of the electronic component unit mounted on the unit mounting portion to the outside;
A cover member that is detachably attached to the outer wall and covers the opening when mounted on the outer wall.
Wire harness.

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