JP2019068634A - Electric connection box and wire harness - Google Patents

Abstract

To provide an electric connection box and a wire harness which can improve an engagement property by suppressing distortion of a lid.SOLUTION: An electric connection box 1 includes a housing 2 accommodating electronic components 6, and an upper cover 3 which can deform elastically by external force and blocks an opening portion 41 from attaching and detaching directions of the housing 2. The upper cover 3 is composed of a top panel portion 31 and a side portion 32 erected from a circumference of the top panel portion 31 toward the housing 2 and being in contact with the circumference of a detaching direction side end portion of the housing 2. The side portion 32 has a pair of small side portions 32b and 32e arranged to be opposed each other and to which an engaging portion 34 engaged to an engaged portion 42 formed on the circumference of the housing 2 is provided, and a board thickness a1 of one small side portion 32a of a pair of small side portions 32a and 32c opposed in a direction intersecting the opposed direction of a pair of small side portions 32b and 32e is made thicker than a board thickness b1 of the small side portions 32b and 32e.SELECTED DRAWING: Figure 3

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 in a vehicle such as an automobile and collectively containing electronic components such as fuses and relays and wire harnesses electrically connected to the electronic components. Etc.) are known.

  A conventional electric connection box is constituted of, for example, an electric connection box main body, a lower cover, and an upper cover (see, for example, Patent Document 1). The electrical connection box main body accommodates the electronic components and the wire harness described above. The lower cover is a lid made of resin that closes the opening provided at the lower end of the electric connection box main body. The upper cover is a lid made of resin that closes the opening provided at the upper end of the electric connection box main body.

JP, 2016-208561, A

  In the conventional electrical connection box, for example, as the operation in the assembly process, it is necessary to assemble the upper cover to the electrical connection box main body to which the lower cover is assembled. Integrity is required.

  An object of the present invention is to provide an electrical connection box and a wire harness which can suppress the bending of the lid and improve the fit.

  In order to achieve the above object, an electrical connection box according to the present invention includes an enclosure having an accommodation space for accommodating at least one electronic component, and an opening communicating the outside with the accommodation space, and an external force. A cover capable of elastically deforming the cover and closing the opening in the mounting and demounting direction of the housing, the cover comprising a top plate and an outer periphery of the top plate to the case It is provided with a side which is erected and is in contact with the outer periphery of the disengaging side end of the housing, and the side is at a position facing each other, and is on the outer periphery of the housing It has a pair of locking side portions provided with a locking portion to be locked to the formed locked portion, and faces in a direction intersecting with the opposing direction of the pair of locking side portions The thickness of at least one of the pair of side portions is at least greater than the thickness of the locking side portion. , Characterized in that.

  In order to achieve the above object, a wire harness according to the present invention comprises: the above-described electric connection box, at least one electronic component accommodated in the electric connection box, and at least one electrically connected to the electronic component And providing a book wiring material.

  According to the electrical connection box and the wire harness according to the present invention, it is possible to suppress the bending of the lid and to improve the fit.

FIG. 1 is a perspective view showing a schematic configuration of the electrical connection box according to the first embodiment. FIG. 2 is an exploded perspective view showing a schematic configuration of the electrical connection box according to the first embodiment. FIG. 3 is a plan view of the upper cover constituting the electrical connection box according to the first embodiment. FIG. 4 is a partial cross-sectional view of the electrical connection box according to the first embodiment. FIG. 5 is a partial cross-sectional view of the electrical connection box according to the first embodiment. FIG. 6 is a perspective view showing a schematic configuration of the electrical connection box according to the second embodiment. FIG. 7 is an enlarged perspective view of an essential part showing a schematic configuration of the electric connection box according to the second embodiment. FIG. 8 is an enlarged perspective view of an essential part showing a schematic configuration of the electric connection box according to the second embodiment. FIG. 9 is a partial cross-sectional perspective view of the electrical connection box according to the second embodiment.

  Hereinafter, embodiments of the electric connection box and the wire harness according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited by the embodiments described below. 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.

First Embodiment
FIG. 1 is a perspective view showing a schematic configuration of the electrical connection box according to the first embodiment. FIG. 2 is an exploded perspective view showing a schematic configuration of the electrical connection box according to the first embodiment. FIG. 3 is a plan view of the upper cover constituting the electrical connection box according to the first embodiment. FIG. 4 is a partial cross-sectional view of the main part of the electrical connection box according to the first embodiment. FIG. 5 is a partial cross-sectional view of the main part of the electrical connection box according to the first embodiment. FIG. 3 is a front view of the opening of the upper cover. FIG. 4 is a partial cross-sectional view taken along line A-A of FIG. 1 and is a partially enlarged view of a cross section of the upper cover and the electric connection box main body. FIG. 5 is a partially enlarged view of a cross section of the upper cover and the electric connection box main body. Further, in the following description, the illustrated X direction, Y direction, and Z direction are orthogonal (cross) to each other. For example, in a state where the electric connection box is mounted on a vehicle and the vehicle is positioned on a horizontal surface, the X direction is called "width direction", the Y direction is called "depth direction", and the Z direction is called "vertical direction". Typically, the width direction and the depth direction are along the horizontal direction, and the vertical direction is along the vertical direction. Here, the width direction corresponds to the “attachment / detachment direction” of the upper cover with respect to the housing, and the X1 direction is the removal direction, and the X2 direction is the arrival direction. The depth direction corresponds to the “short side direction” of the upper cover. The vertical direction corresponds to the "long side direction" of the upper cover. Each direction used in the following description will be described as a direction in a state where the respective parts are assembled to each other and the electric connection box is mounted on a vehicle unless otherwise noted.

  The electric connection box 1 according to the present embodiment shown in FIGS. 1 and 2 is mounted on a vehicle such as a car and incorporated in the wire harness WH. The wire harness WH is, for example, a bundle of a plurality of wiring materials W used for power supply and signal communication for connection between devices mounted on a vehicle, and a plurality of wiring with connectors etc. The material W is connected to each device. The wire harness WH includes a conductive wiring material W and an electrical connection box 1 electrically connected to the wiring material W. The wiring material W is formed of, for example, a metal rod, an electric wire, a wire bundle or the like. The metal rod is one in which the outside of the conductive rod-like member is covered by an insulating coating. The electric wire is obtained by covering the outside of a conductor portion (core wire) made of a plurality of conductive metal wires with an insulating covering portion. The wire bundle is a bundle of the wires. The wire harness WH bundles and collects a plurality of wiring materials W, and the electrical connection box 1 is electrically connected through a terminal, a connector, and the like provided at the end of the bundled wiring materials W. The wire harness WH may further include a grommet, a protector, a fixture, and the like.

  The electrical connection box 1 is a unit for collecting electronic components 6 such as a connector, a fuse, a relay, a capacitor, a branch portion, an electronic control unit, etc., and accommodating them in the inside. The electrical connection box 1 is installed, for example, in an engine room or a vehicle room of a vehicle. The electrical connection box 1 is connected between a power source such as a battery and various electronic devices mounted in the vehicle via the wiring material W and the like. The electrical connection box 1 distributes the power supplied from the power supply to various electronic devices mounted 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 an electrical connection box. Hereinafter, the configuration of the electrical connection box 1 will be described in detail with reference to the respective drawings.

  The electrical connection box 1 of the present embodiment includes a housing 2 and an upper cover 3 as shown in FIGS. 1 and 2. Each part which comprises the electrical connection box 1 is shape | molded by an insulating synthetic resin, for example. The electrical connection box 1 is formed in a box shape by combining a housing 2 and an upper cover 3.

  The housing 2 accommodates one or more electronic components 6. The housing 2 is formed in a box shape by an insulating synthetic resin, and mainly includes a housing space 7 and an opening 41. The accommodation space 7 accommodates one or more electronic components 6. Although the accommodation space part 7 in this embodiment is divided | segmented into two blocks, for example, it is not limited to this. The opening 41 communicates the outside of the electrical connection box 1 with the housing space 7.

  The housing 2 is configured to include an electric connection box main body 4 and a lower cover 5. The electrical connection box main body 4 mainly forms the housing space 7 and the opening 41. In the electric connection box main body 4, a hollow cylindrical housing space 7 is formed by a main body side wall 4 a having a polygonal cylindrical shape (including a substantially rectangular cylindrical shape, the same applies to the following). In the electric connection box main body 4, openings 41 are respectively formed at both ends in the mounting and demounting direction of the main body side wall 4 a. The lower cover 5 is a lid that closes the opening 41 on the attachment direction side in the mounting and demounting direction. The lower cover 5 is formed in a hollow shape by a polygonal cylindrical side wall portion 5 a and an inner bottom portion 5 b opposed to the opening portion 41 of the electric connection box main body 4 in the mounting direction. The lower cover 5 is locked to the electrical connection box main body 4 by the plurality of locking portions 52 in a state where the opening 51 is opposed to the opening 41 on the attachment direction side in the mounting / removing direction. The electrical connection box main body 4 and the lower cover 5 form an insertion hole 43 in a state where they are assembled to each other. The insertion hole 43 is a portion through which the wiring material W assembled to the electrical connection box main body 4 is inserted.

  The upper cover 3 is a lid that closes the opening 41 on the removal direction side of the electrical connection box main body 4. The upper cover 3 has a plurality of locks of the upper cover 3 in a state in which the opening 33 is opposed to the opening 41 of the electric connection box main body 4 in the mounting / removing direction in the state assembled to the electric connection box main body 4 The portion 34 is engaged with the engaged portion 42 of the electrical connection box main body 4. The upper cover 3 can be elastically deformed by an external force, and is formed in a tray shape from an insulating synthetic resin. The external force includes, for example, an operation force of a worker or the like when attaching and detaching the upper cover 3 to the housing 2. The upper cover 3 is formed of a flat plate-like top plate portion 31 formed in a polygon based on a rectangular shape having the same shape as the shape of the opening portion 41, a polygonal cylindrical side portion 32, and a side portion 32. And an opening 33.

  The side portion 32 is erected from the outer periphery of the top plate portion 31 toward the housing 2 and abuts on the outer periphery of the removal direction end of the housing 2. As shown in FIG. 3, the side portion 32 is composed of a plurality of small side portions 32a, 32b, 32c, 32d, 32e, 32f divided into polygon sides. The small side portions 32a to 32f are formed in a linear shape (or substantially linear shape) and are connected to each other. In the side portion 32 in the present embodiment, one or a plurality of locking portions 34 are provided to each of a pair of small side portions 32 b and 32 e located at positions facing each other among the plurality of small side portions 32 a to 32 f. It is provided. On the other hand, the locking portion 34 is not provided on the pair of small side portions 32a and 32c opposed in the direction intersecting the opposing direction of the pair of small side portions 32b and 32e. Hereinafter, the small side portions 32b and 32e provided with the locking portion 34 are also referred to as locking side portions. Each locking portion 34 locks each locked portion 42 formed on the outer periphery of the housing 2. The two locking portions 34 are provided along the Z direction (vertical direction) of the small side portion 32 b, and one locking portion 34 is provided along the Z direction of the small side portion 32 e.

  As shown in FIG. 1 and FIG. 2, the side portion 32 has a stepped shape over the entire circumferential direction. Each of the small side portions 32a to 32f is configured of the outer small side portions 32a1 to 32f1 and the inner small side portions 32a2 to 32f2. For example, the small side 32a shown in FIG. 4 is composed of an outer small side 32a1 and an inner small side 32a2. The small side 32b shown in FIG. 5 is composed of an outer small side 32b1 and an inner small side 32b2, and the small side 32e is an outer small side 32e1 and an inner small side And 32e2. The outer small side portions 32a1 to 32f1 are portions that abut on the outer periphery of the removal direction end of the housing 2. The inner small side portions 32a2 to 32f2 are portions that connect the outer small side portions 32a1 to 32f1 and the top plate portion 31. In the side portion 32 in the present embodiment, the small side portion 32b, 32e in which the thickness a1 of one small side portion 32a of the pair of small side portions 32a, 32c is a locking side portion Is thicker than the thickness b1 of The thickness a1 in the present embodiment is the thickness in the Z direction (vertical direction) of the outer small side portion 32a1, and the thickness b1 is the thickness in the Y direction (depth direction) of the outer small side portions 32b1 and 32e1. is there.

  Next, an assembly procedure of the electrical connection box 1 and the wire harness WH according to the present embodiment will be described. The procedure for assembling the electrical connection box 1 and the wire harness WH is not limited to the one described below, but the electrical connection box 1 and the wire harness WH shown in FIG. 1 may be configured after assembly. Each procedure shown in may be performed appropriately.

  First, the worker assembles the wiring material W into a sub block (not shown) housed in the housing space 7 of the electrical connection box main body 4 to produce a sub harness. Next, the operator inserts the sub-blocks together with the sub-harness into the accommodation space 7 from the direction of arrival of the electrical connection box main body 4 and fits and fixes the electrical connection box main body 4. Next, the operator wraps and ties a binding band (not shown) around the bundle of sub-harnesses, wraps a tape (not shown) so as to cover the binding band, and assembles the wiring material W. At this time, the wiring material W is located in the insertion hole 43 of the electric connection box main body 4. Next, the worker mounts the electronic component 6 on each sub block from the direction of removal of the electric connection box main body 4 and electrically connects the electronic component 6 and the wiring material W. Next, the operator positions the lower cover 5 on the side of the electrical connection box body 4 in the direction of attachment, and inserts the lower cover 5 in the direction of removal from the side of the direction on which the electrical connection box body 4 is attached. At this time, the insertion hole 43 is formed by the electric connection box main body 4 and the lower cover 5, and the wiring material W is in the state of being inserted into the insertion hole 43. Next, the operator places the upper cover 3 on the removal direction side of the electrical connection box main body 4 and mounts the upper cover 3 on the electrical connection box body 4 from the removal direction side toward the installation direction, Complete the assembly of the connection box 1 and the wire harness WH.

  As described above, in the electrical connection box 1 according to the present embodiment, the side portions 32 of the upper cover 3 are at positions facing each other, and the pair of small side portions 32 b provided with the locking portion 34 , 32e. Thereby, when attaching the upper cover 3 to the housing 2, for example, an operator etc. can manually hold the locking portions 34 of the one small side portion 32 b with the respective engaged portions 42 on the housing 2 side. The locking portion 34 of the other small side portion 32 e can be locked to the other locked portion 42 while locking. Further, in the electric connection box 1 according to the present embodiment, one small side of the pair of small side portions 32a and 32c opposed in the direction intersecting with the opposing direction of the pair of small side portions 32b and 32e. The thickness a1 of the side portion 32a is larger than the thickness b1 of the small side portions 32b and 32e. Thereby, for example, when the upper cover 3 is attached to the housing 2, the deflection of the upper cover 3 in the X direction (the depth direction) due to the operation force of the operator or the like is suppressed, and the upper cover 3 and the housing 2 are The fit can be improved. Specifically, for example, when the upper cover 3 is bent in the direction of the arrow in FIG. 3, the end of the direction of attachment of the pair of small side portions 32 b and 32 e is the end of the side of the main body side wall 4 a. By coming into contact, it becomes possible to suppress the locking portion 34 from becoming difficult to be locked to the locked portion 42.

  Further, the wire harness WH according to the present embodiment includes the electrical connection box 1, at least one electronic component 6 accommodated in the electrical connection box 1, and at least one arrangement of wires electrically connected to the electronic component 6. And the material W. Thereby, it is possible to obtain the same effect as the effect of the electrical connection box 1.

  In addition, in the said 1st Embodiment, although the electrical connection box main body 4 and the lower cover 5 are separately comprised in the housing | casing 2, it is not limited to this, You may be comprised integrally. .

  Further, in the first embodiment, the side portion 32 is a small side in which the thickness a1 of one of the small side portions 32a of the pair of small side portions 32a and 32c is a locking side portion. Although the structure which is thicker than plate | board thickness b1 of edge part 32b, 32e was demonstrated, it is not limited to this. For example, the plate thickness a1 of the other small side portion 32c may be thicker than the plate thickness b1, and the plate thicknesses a1 of both the small side portions 32a and 32c may be thicker than the plate thickness b1. .

  Moreover, although the side part 32 demonstrated the structure to which the plate thickness a1 of the small side part 32a is thicker than the plate thickness b1 of the small side parts 32b and 32e, it is not limited to this . For example, the thickness a1 of the small side portion 32a is larger than the thickness b1 of each of the small side portions 32b to 32f excluding the small side portion 32a among the plurality of small side portions 32a to 32f. The configuration may be

  Moreover, although the side part 32 demonstrated the structure to which the plate thickness a1 of the small side part 32a is thicker than the plate thickness b1 of the small side parts 32b and 32e, it is not limited to this . For example, the plate thicknesses a1 and a2 of the small side portion 32a may be thicker than the plate thicknesses b1 and b2 of the small side portions 32b and 32e. Here, the thickness a2 of the small side portion 32a is the thickness in the Z direction of the inner small side portion 32a2, and the thickness b2 of each small side portion 32b, 32e is each inner small side portion 32b2, It is the board thickness b2 of 32e2. The board thickness a1 and the board thickness a2 are preferably a1 ≧ a2, but are not limited thereto.

  Moreover, as shown in FIG. 4, although the side small part 32a1 demonstrated the case where outer side small side part 32a1 was formed in flat form and had fixed board thickness a1, as shown in FIG. 4, it is not limited to this, An outer side The small side portion 32a1 may be tapered so as to increase in thickness from the X1 direction to the X2 direction. In this case, the board thickness a1 to be compared with the board thickness b1 is preferably, for example, the minimum value of the outer small side portion 32a1.

  Further, in the case of the side portion 32, one of the pair of small side portions 32a and 32c having the thickness a1 has a longer length, and the other length is shorter, the smaller side is the smaller one. The thickness a1 of the side portion may be thicker than the thickness b1.

  Moreover, although the side part 32 becomes a stepped shape over the circumferential direction, it is not limited to this, It may not be a stepped shape.

Second Embodiment
FIG. 6 is a perspective view showing a schematic configuration of the electrical connection box according to the second embodiment. FIG. 7 is an enlarged perspective view of an essential part showing a schematic configuration of the electric connection box according to the second embodiment. FIG. 8 is an enlarged perspective view of an essential part showing a schematic configuration of the electric connection box according to the second embodiment. FIG. 9 is a partial cross-sectional perspective view of the electrical connection box according to the second embodiment. 6 is a view of the electrical connection box 1 of FIG. 1 as viewed from the Z direction. FIG. 7 is a partially enlarged view of the inner wall surface of the electric connection box main body 4 of FIG. FIG. 8 is a partially enlarged view of a wire fixed to the inner wall surface of FIG. 7 by a clamp. FIG. 9 shows a partial cross section of the insertion hole in the electrical connection box 1.

  The electric connection box 1 according to the second embodiment has a clamp 60 inserted into the through hole 45 provided in the inner wall surface 44 of the electric connection box main body 4, and the clamp 60 is wired from the insertion hole 43 to the outside The fixed wiring material W is fixed.

  The electric connection box main body 4 has a through hole 45 in the inner wall surface 44 connected to the first half cylindrical portion 43 a that constitutes a part of the insertion hole 43. For example, as shown in FIG. 7, the through hole 45 is formed in an elliptical shape, but is not limited to this. The through hole 45 is for fixing the clamp 60 to the inner wall surface 44. The clamp 60 is a fixing member made of resin, and fixes the wiring material W from the outer periphery by a band portion 60 a formed in an annular shape. The insertion hole 43 is constituted by a first half cylindrical portion 43a provided in the electric connection box main body 4 and a second half cylindrical portion 43b provided in the lower cover 5, and the lower cover 5 is attached to the electric connection box main body 4 A through-hole through which the wiring material W is inserted is formed in the closed state.

  Next, an assembly procedure of the electrical connection box 1 and the wire harness WH according to the present embodiment will be described. Only points different from the contents described in the first embodiment will be described.

  The worker inserts a sub-block (not shown) accommodated in the accommodation space 7 of the electrical connection box main body 4 into the accommodation space 7, and after fitting and fixing the electrical connection box main body 4, the through hole 45 The clamp 60 is inserted into and fixed, and the bundle of sub-harnesses is wound and tied with a binding band, or a tape is wound, and the wiring material W is put together. Next, after fixing the wiring material W by the clamp 60, the electronic component 6 is mounted on the sub block, and the electronic component 6 and the wiring material W are electrically connected. Next, the operator mounts the lower cover 5 to the electric connection box main body 4. At this time, the insertion hole 43 is formed by the electric connection box main body 4 and the lower cover 5, and the wiring material W is in the state of being inserted into the insertion hole 43.

  As described above, the electric connection box 1 according to the present embodiment has the clamp 60 inserted into the through hole 45 provided in the inner wall surface 44 of the electric connection box main body 4, and the clamp 60 is externally provided from the insertion hole 43 The wiring material W to be wired is fixed. Since the wiring material W is fixed to the electrical connection box main body 4, when the lower cover 5 is attached to the electrical connection box main body 4, pinching or falling off of the wiring material W can be suppressed. The assembling workability of 1 can be improved. Moreover, although the through-hole 45 is provided in the electrical connection box main body 4, by inserting the clamp 60 in the through-hole 45, a hole is closed and it can suppress the penetration | invasion of the water in the inside of the electrical connection box 1. It becomes.

DESCRIPTION OF SYMBOLS 1 electrical connection box 2 case 3 upper cover 4 electrical connection box main body 4a main body side wall 5 lower cover 5a side wall 5b inner bottom 6 electronic component 7 accommodation space 31 top plate 32 side 32a, 32b, 32c, 32d, 32e, 32f small side part 32a1, 32b1, 32e1, 32f1 outer small side part 32a2, 32b2, 32e2, 32f2 inner small side part 33 opening 34 locking part 41 opening 42 locking part 43 insertion hole 44 Inner wall surface 45 Through hole 51 Opening 52 Locking part WH Wire harness W Wiring material

Claims (2)

A housing space portion for housing at least one electronic component, and a housing having an opening communicating the outside with the housing space portion;
A lid capable of elastic deformation by an external force and closing the opening in the mounting and demounting direction of the housing;
Equipped with
The lid is
The top board,
A side portion which is erected toward the casing from the outer periphery of the top plate portion and abuts on the outer periphery of the removal direction end of the casing;
Consists of
The side is
It has a pair of locking side portions provided with locking portions that are located at mutually opposing positions and that are locked to locked portions formed on the outer periphery of the housing,
Of a pair of side portions facing in a direction intersecting the opposing direction of the pair of locking side portions, the thickness of at least one side portion is at least as large as the thickness of the locking side portion. It's getting thicker,
Electrical connection box characterized by An electrical connection box according to claim 1;
At least one electronic component housed in the electrical connection box;
At least one wiring member electrically connected to the electronic component;
A wire harness comprising the

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