JP2006166621A - Protector and electric connection box equipped with that protector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protector which can bend an accommodated wire harness surely in its vicinity, and an electric connection box equipped with that protector. <P>SOLUTION: The electric connection box 1 is equipped with a box main body and a protector 3. The terminal of the wire harness is attached to the box main body. The protector 3 is equipped integrally with the first fixing part 12 and the second fixing part 13. The first fixing part 12 is made in the shape of a trough so as to accommodate the wire harness. The first fixing part 12 is fixed to the wire harness by a tape. The second fixing part 13 is made in the shape of a plate and positions the wire harness on its surface. The second fixing part 13 is fixed to the wire harness by a binding band. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a protector for protecting a wire harness mounted on an automobile or the like as a moving body, and an electric junction box including the protector.

  In general, automobiles as moving bodies are equipped with a wide variety of electronic devices such as lamps such as head lamps and tail lamps, and motors such as motors for starter motors and air conditioners.

  In order to supply electric power to the various electronic devices described above, the automobile has arranged junction blocks at appropriate locations. The junction block is composed of various electric circuit units such as a large number of fuses and relays.

  Note that the junction block may include a fuse, a relay, a bus bar, and the like, and thus is also referred to as a fuse block, a relay box, or an electrical connection box. In the present specification, the above-described fuse block, relay box, and junction block are collectively referred to as an electric connection box (for example, refer to Patent Document 1).

  The electric junction box shown in Patent Document 1 described above includes a box body that forms an outer shell, a wiring board, and the like. On the upper surface of the box body, for example, a plurality of mounting portions on which electrical components such as the relays, fuses and fusible links described above are mounted are provided. Moreover, the connector of the wire harness routed by the motor vehicle mentioned above fits in the lower surface of a box main body, for example.

  The wire harness includes a plurality of electric wires and a connector attached to an end portion of the electric wires. The connector is fitted to various electronic devices mounted on the automobile described above and the box body described above.

  The above-described wiring board is accommodated in the box body. The wiring board connects the various electrical components mounted on the mounting portion described above and the terminals of the connector of the wire harness according to a predetermined pattern.

  Furthermore, the electrical junction box shown in Patent Document 1 described above includes a protector that houses the wire harness described above. In the illustrated example of Patent Document 1, the protector is formed integrally with the box body and extends outward from the box body. The protector is formed in a bowl shape. The protector accommodates the wire harness and is fixed to the wire harness by, for example, winding a tape around the outer periphery. The protector positions the wire harness described above and protects the wire harness by preventing foreign matter from coming into contact with the wire harness.

In the electrical junction box described above, desired electrical components are mounted on each mounting portion, and the connector of the wire harness is fitted to the lower surface of the box body. Thus, the electrical junction box described above is assembled. The electrical junction box supplies power from a power source supplied from a power source or the like to the electronic device described above via a fusible link, a wire of a wire harness, or the like.
Japanese Patent Laid-Open No. 10-257637

  In the conventional electrical junction box described above, the wire harness described above may be bent at the boundary between the protector and the box body or at the outer edge of the protector. At this time, since the protector described above is formed in a bowl shape, a plurality of electric wires constituting the wire harness are bundled so that the wire harness has a round cross section at the boundary and the outer edge described above. For this reason, it was difficult for the protector to bend the wire harness at the boundary and the outer edge described above.

  Therefore, the objective of this invention is providing the protector which can bend the accommodated wire harness reliably near, and an electrical junction box provided with this protector.

  In order to solve the problems and achieve the object, the protector of the present invention according to claim 1 is formed in a bowl shape, accommodates a wire harness inside, and is fixed to the wire harness. And a second fixing part that is connected to the first fixing part and is formed in a plate shape, and the wire harness is positioned on the surface and fixed to the wire harness. It is characterized by.

  The protector according to a second aspect of the present invention is the protector according to the first aspect, wherein the first fixing portion is attached to the fixing portion main body so as to be rotatable via a fixing portion main body formed in a bowl shape and a hinge. And an attached lid.

  According to a third aspect of the present invention, the protector of the present invention is formed in a cylindrical shape and accommodates a wire harness inside, a first fixing portion fixed to the wire harness, connected to the first fixing portion, and a plate The wire harness is positioned on the surface, and a second fixing portion fixed to the wire harness is integrally provided.

  The protector according to a fourth aspect of the present invention is the protector according to any one of the first to third aspects, wherein the second fixing portion is a plate-shaped second fixing portion main body. And a binding band that is attached to the second fixed portion main body and binds the wire harness to the second fixed main body.

  A protector according to a fifth aspect of the present invention is the protector according to the fourth aspect, wherein the second fixing portion main body has a pair of holes through which the binding band passes in a direction intersecting a longitudinal direction of the wire harness. It is characterized by being arranged at intervals along each other.

  A protector according to a sixth aspect of the present invention is the protector according to any one of the first to fifth aspects, wherein the wire harness is formed with a bent portion where the wire harness is bent. And the second fixing portion is arranged in the vicinity of the bent portion.

  An electrical junction box according to a seventh aspect of the present invention includes a box body on which electrical components are mounted, and the protector according to any one of the first to sixth aspects. .

  According to the protector of the present invention described in claim 1, since the second fixing portion is formed in a plate shape, the wire harness is positioned on the plate-like second fixing portion in the second fixing portion. It has a flat shape. For this reason, the wire harness can be easily bent in the vicinity of the second fixing portion.

  According to the protector of the present invention described in claim 2, since the first fixing portion includes the lid, the wire harness can be covered with the lid and the protector main body.

  According to the protector of the present invention described in claim 3, since the second fixing portion is formed in a plate shape, the wire harness is positioned on the plate-like second fixing portion in the second fixing portion. It has a flat shape.

  Furthermore, since the 1st fixing | fixed part is formed in the cylinder shape, a wire harness can be covered with this 1st fixing | fixed part.

  According to the protector of the present invention as set forth in claim 4, since the second fixing portion includes the binding band, the wire harness can be fixed to the second fixing portion with certainty.

  According to the protector of the present invention described in claim 5, since the binding band is passed through the pair of holes spaced apart from each other along the direction intersecting the longitudinal direction of the wire harness, the binding band is connected to the second fixing portion. Can be attached to the body. Furthermore, the wire harness can be reliably fixed to the second fixing portion with the binding band.

  According to the protector of the present invention described in claim 6, since the second fixing portion is arranged in the vicinity of the bent portion of the wire harness, the wire harness is flattened at the bent portion, and the wire harness is securely connected. Can be bent.

  According to the electrical junction box of the present invention described in claim 7, since the protector according to any one of claims 1 to 7 is provided, the wire harness can be reliably bent in the vicinity of the second fixing portion. .

  As described above, according to the first aspect of the present invention, since the wire harness can be easily bent in the vicinity of the second fixing portion, the accommodated wire harness can be reliably bent in the vicinity.

  In the second aspect of the present invention, since the first fixing portion includes the lid, the wire harness can be covered with the lid and the protector body. Therefore, it can prevent that a foreign material etc. contact a wire harness and this wire harness is damaged unexpectedly.

  According to the third aspect of the present invention, since the wire harness has a flat shape in the second fixing portion, the wire harness can be easily bent in the vicinity of the second fixing portion, and the accommodated wire harness can be more reliably in the vicinity. Can be bent.

  Furthermore, the wire harness can be covered with the first fixing portion. Therefore, it can prevent that a foreign material etc. contact a wire harness and this wire harness is damaged unexpectedly.

  In the fourth aspect of the present invention, since the second fixing portion includes the binding band, the wire harness can be reliably fixed to the second fixing portion.

  According to the fifth aspect of the present invention, the binding band can be attached to the second fixing portion main body, and the wire harness can be reliably fixed to the second fixing portion with the binding band.

  In the present invention described in claim 6, since the second fixing portion is disposed in the vicinity of the bent portion of the wire harness, the wire harness becomes flat at the bent portion, and the wire harness can be bent reliably.

  According to the seventh aspect of the present invention, since the protector according to any one of the first to seventh aspects is provided, the wire harness can be reliably bent in the vicinity of the second fixing portion of the protector.

  Hereinafter, a protector according to a first embodiment of the present invention and an electrical junction box including the protector will be described with reference to FIGS. 1 to 5.

The electrical junction box 1 shown in FIG. 1 according to the present embodiment is mounted on an automobile as a moving body. As shown in FIG. 1, the electrical junction box 1 includes a box body 2, a wiring board (not shown), and a protector 3.
Etc. The box body 2 is made of an insulating synthetic resin and is molded by a well-known injection molding. The box body 2 is formed in a cylindrical shape (box shape) by a plurality of outer walls 4.

  A plurality of mounting portions 8 to which electrical components such as relays 5 and fuses 6 are mounted are provided on the upper surface (corresponding to the front surface) 2a located above the box body 2 in FIG. Furthermore, the upper surface 2a of the box body 2 is provided with a connector 9 into which the connector of the wire harness 7 (indicated by a two-dot chain line in FIG. 1) routed in the automobile described above is fitted.

  Further, the lower surface (not shown) of the box body 2 located on the back side in FIG. 1 is fitted with a connector of a second wire harness (not shown) that is routed to the automobile described above and is separate from the wire harness 7 described above. . The wire harness 7 and the second wire harness include a plurality of electric wires and a connector attached to the end of the electric wires. The connector fits into various electronic devices mounted on the automobile described above and the box body 2 described above.

  Furthermore, a concave groove 10 is provided in one outer wall 4 located on the front side in FIG. 1 among the plurality of outer walls 4 of the box body 2 described above. The concave groove 10 is formed in a concave shape from the outer wall 4 described above, and extends linearly along a direction orthogonal to (intersects) both the upper surface 2a and the lower surface. The concave groove 10 accommodates the wire harness 7 described above.

  The end of the wire harness 7 described above is inserted into the groove 10 from the lower surface side and fixed to the protector 3 as described later, and then the connector is fitted to the connector 9 on the upper surface 2a. Thus, the terminal is attached to the upper surface 2a. For this reason, the wire harness 7 is bent in the vicinity of the protector 3 described above. Thereby, a bent portion 11 in which the wire harness 7 is bent is formed in the vicinity of the protector 3.

  The wiring board includes a conductive bus bar and an insulating plate. The bus bar is obtained by subjecting a conductive sheet metal to press working such as punching. A plurality of bus bars are provided. The plurality of bus bars are overlapped with each other. The insulating plates are arranged between the bus bars that are overlapped with each other, and prevent the bus bars from being electrically connected to each other at unintended locations, that is, short-circuiting and positioning the bus bars.

  The wiring board is accommodated in the box body 2. When the wiring board is housed in the box body 2, the bus bar determines the connector of the second wire harness, the electrical components such as the relay 5 and the fuse 6 mounted on the mounting portion 8, and the connector of the wire harness 7 in advance. They are electrically connected to each other according to the pattern formed.

  The protector 3 is made of an insulating synthetic resin and integrally includes a first fixing portion 12 and a second fixing portion 13 as shown in FIGS. 2 and 3.

  As shown in FIG. 5, the first fixing portion 12 is formed in a hook shape having a circular arc cross section, and has a fixing portion main body 14 that accommodates the wire harness 7 (indicated by a two-dot chain line in FIG. 5) inside. I have. That is, the first fixing portion 12 is formed in a bowl shape. The opening of the fixing portion main body 14 of the first fixing portion 12 is opposed to the bottom surface of the groove 10. The first fixing portion 12 is fixed to the wire harness 7 by winding a tape 15 (indicated by a one-dot chain line in FIG. 5) around the outer periphery together with the wire harness 7.

  The second fixing portion 13 is connected to one end in the longitudinal direction of the wire harness 7 of the first fixing portion 12. The second fixing portion 13 is arranged closer to the upper surface 2 a side, that is, closer to the bent portion 11 than the first fixing portion 12. Moreover, since the terminal is attached to the upper surface 2a of the wire harness 7 described above, a bent portion 11 is formed in the immediate vicinity of the second fixed portion 13 (the second fixed portion 13 is disposed in the vicinity of the bent portion 11). )

  As shown in FIG. 4, the second fixing portion 13 includes a plate-like second fixing portion main body 16 and a binding band 17 (indicated by a one-dot chain line in FIG. 4). The second fixing portion main body 16 is disposed between the pair of connecting plate portions 18 and a pair of connecting plate portions 18 spaced apart from each other along a direction orthogonal (crossing) to the longitudinal direction of the wire harness 7. And an accommodating plate portion 19.

  The pair of connecting plate portions 18 are each formed in a flat plate shape, and both surfaces are located on the same plane. The pair of connecting plate portions 18 are connected to the inner surfaces facing each other along the direction perpendicular to the longitudinal direction of the wire harness 7 of the concave groove 10 described above. That is, the protector 3 is integral with the box body 2 in the illustrated example.

  The accommodating plate portion 19 is formed in a flat plate shape, and both surfaces thereof are arranged in parallel with both surfaces of the connecting plate portion 18 described above. The accommodating plate portion 19 is connected to the connecting plate portion 18 by forming a step between the connecting plate portion 18 and the connecting plate portion 18 described above. The housing plate part 19 is located outside the box body 2 from the connecting plate part 18. The accommodation plate portion 19 positions the wire harness 7 described above between the bottom surface of the concave groove 10, that is, on the surface thereof.

  The second fixing portion 13 described above includes a connecting plate portion 18 and an accommodation plate portion 19 and is formed in a plate shape. Further, each of the connecting plate portions 18 is provided with a hole 20. For this reason, the second fixing portion 13 is provided with a pair of holes 20 spaced apart from each other along a direction intersecting (orthogonal) with the longitudinal direction of the wire harness 7. Of course, the hole 20 penetrates the connecting plate portion 18.

  Each of the holes 20 passes the binding band 17 described above. The distance D (shown in FIG. 3) between the pair of holes 20 is 1.5 times or more the width H (shown in FIG. 3) of the first fixing portion 12 in the direction orthogonal to the longitudinal direction of the wire harness 7. is there. In the illustrated example, the distance D between the pair of holes 20 is 1.5 times the width H of the first fixing portion 12.

  The binding band 17 is formed in a band shape. The binding band 17 is attached to the second fixing portion main body 16 of the second fixing portion 13 through the hole 20 described above. The binding band 17 binds the wire harness 7 to the second fixing portion main body 16 of the second fixing portion 13 of the protector 3.

  As shown in FIG. 4, the second fixing portion 13 positions the wire harness 7 on the surface of the accommodation plate portion 19 and is fixed to the wire harness 7 by a binding band 17 passed through the hole 20.

  The electrical junction box 1 described above is assembled as follows. First, a wiring board is accommodated in the box body 2, and electrical components such as the fuse 6 and the relay 5 are mounted on the mounting portion 8 provided on the upper surface 2 a of the box body 2.

  Then, the end of the wire harness 7 is inserted into the groove 10 described above from the lower surface side, and the end of the wire harness 7 is positioned on the upper surface 2 a side of the box body 2 through the groove 10. Then, after bending the wire harness 7 on the upper surface 2a side to form the bent portion 11, the connector of the wire harness 7 is fitted to the connector 9 provided on the upper surface 2a described above.

  Thereafter, the wire harness 7 is accommodated in the fixing portion main body 14 of the first fixing portion 12, and the tape 15 is wound around the outer periphery of the fixing portion main body 14 and the wire harness 7 of the first fixing portion 12. The wire harness 7 is fixed to. Further, the wire harness 7 is positioned on the receiving plate portion 19 of the second fixing portion main body 16 of the second fixing portion 13, and the second fixing portion main body 16 and the wire harness 7 of the second fixing portion 13 are connected by the binding band 17. The wire harness 7 is fixed to the second fixing portion 13 by binding.

  And the electrical connection box 1 makes the lower surface of the box main body 2 fit the connector of a 2nd wire harness. Thus, the electrical junction box 1 described above is assembled and mounted on the automobile. Then, the electrical junction box 1 electrically connects an automobile electronic device and electrical components such as the fuse 6 and the relay 5 according to a predetermined pattern.

  According to this embodiment, since the 2nd fixed part 13 is formed in plate shape, the electric wire which constitutes wire harness 7 is positioned on flat plate-like 2nd fixed part 13 in the 2nd fixed part 13, The wire harness 7 has a flat shape. For this reason, the wire harness 7 can be easily bent in the vicinity of the second fixing portion 13. Therefore, the protector 3 can bend the accommodated wire harness 7 reliably in the vicinity.

  Since the second fixing portion 13 includes the binding band 17, the wire harness 7 can be reliably fixed to the second fixing portion 13.

  Since the binding band 17 is passed through the pair of holes 20 spaced from each other along the direction intersecting the longitudinal direction of the wire harness 7, the binding band 17 can be attached to the second fixing portion main body 16. Therefore, the wire harness 7 can be reliably fixed to the second fixing portion 13 with the binding band 17. Since the 2nd fixing | fixed part 13 is distribute | arranged to the vicinity of the bending part 11 of the wire harness 7, the wire harness 7 becomes flat in this bending part 11, and this wire harness 7 can be bent reliably.

  Moreover, since the electrical junction box 1 includes the protector 3 described above, the wire harness 7 can be reliably bent in the vicinity of the second fixing portion 13 of the protector 3.

  Next, a second embodiment of the present invention will be described with reference to FIG. Note that the same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  The first fixing portion 12 of the protector 3 of the electrical junction box 1 of this embodiment includes a flat lid 21 in addition to the fixing portion main body 14 described above. One edge in the width direction of the lid body 21 is connected to one edge in the width direction of the fixing portion main body 14 via the hinge 22. The lid body 21 is attached to the above-described fixing portion main body 14 so as to be rotatable about the hinge 22.

  The lid body 21 rotates around the hinge 22 so as to open the fixing portion main body 14 of the first fixing portion 12 and cover the opening of the fixing portion main body 14 of the first fixing portion 12. And is freely displaceable. In the present embodiment, the lid body 21 and the fixed body 14 are provided with a locking portion 23 and a locking receiving portion 24 that are locked to each other. Furthermore, in a state where the locking portion 23 and the locking receiving portion 24 are not locked to each other, the lid body 21 described above opens the fixing portion main body 14 by the elastic restoring force of the hinge 22.

  In the present embodiment, when the wire harness 7 is fixed to the first fixing portion 12, the fixing portion of the first fixing portion 12 is fixed to the lid 21 without locking the locking portion 23 to the locking receiving portion 24. The main body 14 is left open. Then, after passing the end of the wire harness 7 or the like into the concave groove 10, the lid body 21 is rotated around the hinge 22 to lock the locking portion 23 and the locking receiving portion 24 with each other. The fixing part main body 14 is closed with the lid 21, and the wire harness 7 is accommodated in the first fixing part 12. Then, a tape 15 or the like is wound around the outer periphery of the first fixing portion 12 and the wire harness 7 to fix the wire harness 7 to the first fixing portion 12.

  According to the present embodiment, in addition to the effects of the first embodiment described above, the first fixing portion 12 includes the lid body 21, so that the wire harness 7 is covered with the lid body 21 and the fixing portion main body 14. Can do. Therefore, it can prevent that a foreign material etc. contact the wire harness 7 and this wire harness 7 is damaged unexpectedly.

  Next, a third embodiment of the present invention will be described with reference to FIG. Note that the same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  The fixing part main body 14 of the first fixing part 12 of the protector 3 of the electrical junction box 1 of the present embodiment is formed in a cylindrical shape (tubular shape). That is, in the present embodiment, the first fixing portion 12 is formed in a cylindrical shape (tubular shape). The fixing portion main body 14 of the first fixing portion 12 accommodates the wire harness 7 through the wire harness 7 on the inside.

  In the present embodiment, when the end of the wire harness 7 is passed through the recessed groove 10, the wire harness 7 described above is passed through the fixing portion main body 14 of the first fixing portion 12. Then, a tape 15 or the like is wound around the outer periphery of the first fixing portion 12 and the wire harness 7 to fix the wire harness 7 to the first fixing portion 12.

  According to this embodiment, in addition to the effects of the first embodiment described above, the first fixing portion 12 is formed in a cylindrical shape (tubular shape), and thus the wire harness 7 is covered with the first fixing portion 12. be able to. Therefore, it can prevent that a foreign material etc. contact the wire harness 7 and this wire harness 7 is damaged unexpectedly.

  In the 1st and 2nd embodiment mentioned above, the fixing | fixed part main body 14 of the 1st fixing | fixed part 12 of the protector 3 is formed in cross-sectional arc shape. Furthermore, in 3rd Embodiment, the fixing | fixed part main body 14 of the 1st fixing | fixed part 12 of the protector 3 is formed in the cylindrical shape.

  However, in this invention, the fixing | fixed part main body 14 of the 1st fixing | fixed part 12 of the protector 3 may be formed in other shapes, such as a U-shaped cross section. Furthermore, in this invention, the fixing | fixed part main body 14 of the 1st fixing | fixed part 12 of the protector 3 may be formed in square tube shape. In short, in the present invention, the fixing part main body 14 of the first fixing part 12 of the protector 3 may accommodate the wire harness 7. By carrying out like this, the 1st fixing | fixed part 12, ie, the protector 3, can position and fix the wire harness 7 reliably.

  Moreover, in this invention, the protector 3 does not need to be integrally formed in the box main body 2 etc. of the electrical junction box 1, and may protect the wire harness 7 independently like the conventionally well-known thing. Further, the protector 3 may be separated from the box body 2 of the electrical junction box 1 so as to be detachable from the box body 2.

  Furthermore, in the present invention, the wire harness 7 does not have to be bound to the second fixing part main body 16 of the second fixing part 13 by the binding band 17 without providing the binding band 17 to the second fixing part 13. In this case, similarly to the first fixing portion 12, the wire harness 7 may be fixed to the second fixing portion 13 by winding a tape or the like.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

It is a perspective view of the electric junction box concerning a 1st embodiment of the present invention. It is a perspective view which shows the protector of the electrical junction box shown by FIG. FIG. 3 is a plan view of the protector etc. shown in FIG. 2. It is a perspective view which shows the cross section which follows the IV-IV line | wire in FIG. It is sectional drawing which follows the VV line in FIG. It is a perspective view which shows the protector of the electrical junction box which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the protector of the electrical junction box which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

1 Electrical junction box 2 Box body 3 Protector 5 Relay (electrical part)
6 Fuses (electrical parts)
DESCRIPTION OF SYMBOLS 7 Wire harness 8 Mounting part 11 Bending part 12 1st fixing part 13 2nd fixing part 14 Fixing part main body 16 2nd fixing part main body 17 Binding band 20 Hole 21 Lid body 22 Hinge

Claims (7)

A first fixing portion that is formed in a bowl shape and accommodates the wire harness inside, and is fixed to the wire harness;
A second fixing portion that is connected to the first fixing portion and is formed in a plate shape, and the wire harness is positioned on the surface and fixed to the wire harness;
A protector characterized by comprising   The said 1st fixing | fixed part was equipped with the fixing | fixed part main body formed in the bowl shape, and the cover body attached to the said fixing | fixed part main body rotatably via the hinge. Protector. A first fixing portion that is formed in a cylindrical shape and accommodates the wire harness therein, and is fixed to the wire harness;
A second fixing portion that is connected to the first fixing portion and is formed in a plate shape, and the wire harness is positioned on the surface and fixed to the wire harness;
A protector characterized by comprising The second fixing part is
A second fixing portion main body formed in a plate shape;
A binding band attached to the second fixed portion main body and binding the wire harness to the second fixed main body;
The protector as described in any one of Claims 1 thru | or 3 characterized by the above-mentioned.   The pair of holes through which the binding band passes are arranged in the second fixing portion main body at intervals from each other along a direction intersecting a longitudinal direction of the wire harness. Protector. The wire harness is formed with a bent portion where the wire harness is bent,
The protector according to any one of claims 1 to 5, wherein the second fixing portion is disposed in the vicinity of the bent portion. A box body on which electrical components are mounted;
An electrical junction box comprising: the protector according to any one of claims 1 to 6.

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