JP3437338B2 - Structure for fixing wire harness to electrical junction box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a wire harness to an electric connection box.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a structure for fixing a wire harness to a conventional electric junction box disclosed in Japanese Utility Model Laid-Open No. 2-137883. The fixing structure shown in FIG. 5 shows a structure for fixing the wire harness 2 pulled out from the electrical junction box 1 to the wall surface 3 of itself, and FIG. 6 shows the wire harness pulled out from another device on the wall surface 4. The structure to fix is shown.

As shown in FIG. 5, the wall surface 3 of the electrical junction box 1
A focusing band 7 is integrally formed on the support 5 via a hinge 6. A lock hole 8 is provided on the free end side of the focusing band 7. Further, a lock portion 9 is provided on the wall surface 3 so as to face the pillar 5. Between the lock portion 9 and the support column 5 is a focusing portion 10 for focusing the wire harness 2. The locking projection 9 is provided on the lock portion 9.
Is projected. The locking protrusion 11 is used for the focusing band 7
Engages with the lock hole 8 of.

Then, the wire harness 2 pulled out from the electric junction box 1 is inserted into the focusing portion 10, the focusing band 7 is tilted to the wall surface 3 side, and the locking projections 11 are locked in the lock holes 8.
Engage. As a result, the wire harness 2 drawn out from the electric junction box 1 is fixed on the wall surface 3.

By the way, the hinge 6 for connecting the focusing band 7 to the column 5 in a bendable manner needs to have flexibility, but inexpensive polypropylene or the like is used as a material for molding the electric junction box 1. Therefore, when integrally molded with the electrical junction box 1, the flexibility is low, and therefore it is easily broken.

Therefore, if an expensive material having excellent flexibility such as nylon is used, the connection box body 1a which does not require flexibility is used.
Since it is molded up to, the material cost is high.

Then, the wall surface 3 is formed by using the flexible hinge 6.
It is conceivable to form the focusing band 12 separately from the wall surface 4 of the connection box body 13 as shown in FIG. In this case, one end of the focusing band 12 is rotatably supported by the supporting portion 14 provided on the wall surface 4, and the other end of the focusing band 12 is engaged with the lock portion 15 provided on the wall surface 4. By this, the wire harness can be fixed to the wall surface 4. According to this structure, an inexpensive material having low flexibility can be used, and the material cost can be reduced.

[0008]

However, in the wire harness fixing structure described in the above publications, the lock portions 9 and 15 for fixing the wire harness on the wall surfaces 3 and 4 on both sides of the wire harness, Since the columns 5, the focusing bands 7, 12 and the like are provided, the connection box bodies 1a, 13 have a complicated structure, and there is a problem that the manufacturing cost becomes high.

Further, the junction box bodies 1a and 13 are large in size, and a large space is required to dispose the enlarged connection box bodies 1a and 13.

Further, in the fixing structure in the above publication, since the lock hole 8 and the support portion 14 have holes, foreign matter is mixed in through the holes, and a defect due to the mixed foreign matter such as vibration may occur. There is sound or incomplete lock. Therefore, an object of the present invention is to provide a structure for fixing a wire harness to an electric junction box, which is inexpensive, can save space, and can reliably prevent foreign matter from entering.

[0011]

To achieve the above object, the invention according to claim 1 is a structure for fixing a wire harness to an electric junction box for fixing the wire harness to the junction box body, wherein the junction box body is Along the height direction
Cylindrical protrusion with slits and four dividing cylinders
A starting portion, a fitting recess formed of a cylindrical hole space that allows the columnar body to be press-fitted and bends toward the center of the columnar body at the time of press-fitting, and an annular mounting portion through which the wire harness is inserted and supported. And a clip having the wire harness, and the wire harness is fixed to the protrusion through the clip.

According to the invention of claim 1, a clip is attached to the wire harness by inserting and supporting the wire harness in the annular attachment portion, and the wire harness is routed in the vicinity of the connection box body, and then a cylindrical hole is formed. A cylindrical protrusion is press-fitted into a fitting recess formed of a space. Thereby, the wire harness is fixed to the connection box body via the clip. At this time, the four columnar bodies that form the protrusion are press-fitted in a state of being bent toward the center, respectively, and the clip is prevented from coming off the protrusion due to the reaction force in the fitting recess of the columnar body. Fixed to the protrusion. Further, in this case, the clip can be rotated around the columnar protrusion, and when the wiring position of the wire harness is displaced, the clip can be rotated around the protrusion and adjusted. .

The invention according to claim 2 is the power supply according to claim 1.
The structure for fixing the wire harness to the air junction box,
The protrusion is provided so as to protrude from the upper surface of the junction box body, and
The ear harness was installed on the upper surface of the junction box body.
In this state, the protrusion is pressed into the fitting recess and
The harness should be fixed on the top of the junction box body.
It is characterized by.

According to the second aspect of the present invention, when the protrusion protruding from the upper surface of the connection box body is press-fitted into the fitting recess of the clip attached to the wire harness, the wire harness is connected via the clip. It is fixed on the box body. In this case, since the protrusion and the annular mounting portion are arranged side by side on the upper surface of the junction box body, the wire harness is supported on the junction box body, so that the protrusion is not heavily loaded.

[0015]

[0016]

[0017]

[0018]

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a structure for fixing a wire harness to an electric connection box according to the present invention will be described below. In addition, FIG. 1 shows an electric connection box 17 to which a structure for fixing a wire harness to the electric connection box according to the present invention is applied.
2 is a perspective view showing the wire harness 19 and FIG.
It is the perspective view which expanded a part of FIG.

In the structure for fixing the wire harness 19 to the electric connection box 17 in this embodiment, the connection box body 21 is provided with the projection 23, and the projection 23 is press-fitted into the fitting recess 2.
5 and a clip 29 having an annular mounting portion 27 through which the wire harness 19 is inserted and supported, and the wire harness 19 is fixed to the protrusion 23 via the clip 29.

As shown in FIG. 1, the electric junction box 17 comprises a junction box body 21 composed of an upper cover 31 and an under cover 33. A fuse mounting portion 35 and a relay mounting portion 37 are formed on the upper surface side of the upper cover 31. Further, the columnar projection 23 is integrally projected from the upper surface of the upper cover 31.

As shown in FIG. 2, the protrusion 23 is divided into four columnar bodies 43, 43, 43, 43 by forming slits 39, 41 in a cross shape along the height direction of the columnar body. Has been done. These pillars 43 are the same as the clips 29 described above.
In the state of being press-fitted into the fitting recess 25, it is bent and deformed toward the center.

The clip 29 has a structure shown in FIGS. 2 and 3 (a),
As shown in (b), (c), (d), and (e), the annular mounting portion 27 and the tubular mounting body 45 are integrally formed.
The annular mounting portion 27 is formed of an annular body 47 and an opening 49 formed in a part of the annular body 47. Annular body 47
The inner diameter of the wire harness is set to be slightly shorter than the outer diameter of the wire harness 19, and when the wire harness 19 is inserted inside, the opening 49 of the wire harness expands to bend the outer circumference of the wire harness 19 by its reaction force. Band together. Also,
By expanding the opening 49, the wire harness 19
Can be inserted inside the annular body 47. The tubular mounting body 45 is integrally formed on the outer periphery of the annular body 47.

The tubular mounting portion 45 is formed along a direction intersecting the axial direction of the wire harness 19 inserted and supported by the annular mounting portion 27, and is formed inside one side (lower surface in FIG. 2). The fitting recess 25 is formed of a cylindrical hole space whose side is open. The end surface 51 on the opening side of the fitting recess 25 is formed at a position substantially equal to the outer peripheral surface of the annular body. The inner diameter of the fitting recess 25 is substantially equal to or slightly shorter than that of the protrusion 23. The depth of the fitting recess 25 is set to be substantially equal to or slightly longer than the height of the protrusion 23. Therefore, when the protrusion 23 is press-fitted into the fitting recess 25, the end surface 51 of the fitting recess 25 comes into contact with the upper surface 21a of the connection box body 21 and the annular body 4 is pressed.
The outer periphery of 7 contacts the upper surface of the junction box body 21 (see FIG. 4).
(See (b)).

Furthermore, when the projection 23 is inserted into the fitting recess 25, the columnar body 43 forming the projection 23 bends toward the center, and the reaction force presses the inner wall of the fitting recess 25. The protrusion 23 is press-fitted into the fitting recess 25.
Therefore, the projection 23 does not accidentally slip out of the fitting recess 25, and the clip 29 is fixed to the projection 23.

Next, a fixing procedure for fixing the wire harness 19 arranged near the electric junction box 17 to the junction box body 21 will be described.

The wire harness 19 is previously clipped to the clip 2.
9 is inserted into the inside of the annular body 47, or
By expanding the opening 49, the wire harness 19 is inserted and supported inside the annular body 47. With the clip 29 inserted and supported inside the annular body 47, the clip 29 is moved in the longitudinal direction of the wire harness 19 to be aligned.
Next, the protrusion 23 is press-fitted into the fitting recess 25. As a result, the clip 29 is fixed to the protrusion 23, and the wire harness 19 is fixed and held on the upper surface of the connection box body 21 via the clip 29.

In this case, since the projecting portion 23 is formed in a cylindrical shape, even when the press-fitting direction in the fitting recess 25 is slightly deviated, the projecting portion 23 is rotated about the center after the press-fitting. The wiring position of the wire harness 19 can be adjusted.

According to this embodiment, since the wire harness 19 is fixed to the connection box body 21, no hole is provided in the connection box body 21, so that no foreign matter is mixed into the connection box body 21. Further, since the protrusion 23 is simply provided on the upper surface 21a of the connection box body 21, the cost can be reduced and the space can be saved.

In addition, since the projection 23 is projected from the upper surface 21a of the connection box body 21, the wire harness 19
Is fixed to the upper surface 21a of the junction box body 21,
As shown in FIG. 4B, since the fitting recess 25 and the position where the wire harness 19 pass are arranged side by side, the wire harness 19 is placed on the upper surface 21 a of the connection box body 21 and is larger than the protrusion 23. There is no load. Therefore, it is not necessary to mold the connection box main body 21 with an expensive material having strength, and it can be molded with an inexpensive material, so that the manufacturing cost can be reduced.

Further, according to the present embodiment, cross-shaped slits 39 and 41 are formed in the protrusion 23 to form four columnar members 43 and 4 respectively.
By providing 3, 43, 43, the columnar bodies 43, 4
Since the bending of 3, 43, 43 is used, the fitting recess 2
5 can be easily press-fitted into the column 5 and the column 43
Due to the reaction force due to the bending, the clip 29 is prevented from being accidentally pulled out, the clip 29 can be reliably fixed to the protrusion 23, and the wire harness 19 can be reliably fixed to the connection box body 21.

[0032]

As described above, according to the first aspect of the invention, the protrusion of the connection box body is press-fitted into the fitting recess of the clip in which the wire harness is inserted and supported in the annular mounting portion. Since the wire harness can be fixed to the connection box body via the clip, the space can be saved at a low cost, and since no hole is provided in the connection box body, foreign matter does not enter. In addition, since the protrusion is formed of a columnar body, the clip can be rotated around the protrusion when the protrusion is pressed into the fitting recess, and the wiring direction of the wire harness can be adjusted. . further,
By forming the protrusion with the columnar body, the reaction force due to the bending of the columnar body inserted into the fitting recess prevents the clip from coming off the protrusion. Further, even when the protrusion is pressed into the fitting recess, the columnar body bends toward the center,
The protrusion can be easily pressed into the fitting recess.

According to the second aspect of the present invention, since the projection and the annular mounting portion are arranged side by side on the upper surface of the connection box body, the wire harness is supported on the connection box body. Since a large burden is not applied and it is not necessary to mold the junction box main body with a strong and expensive material, it can be formed with an inexpensive material. Therefore, the manufacturing cost of the junction box body can be reduced.

[0034]

[0035]

[Brief description of drawings]

FIG. 1 is a perspective view showing an electric connection box and a wire harness to which a structure for fixing a wire harness to an electric connection box according to the present invention is applied.

FIG. 2 is a perspective view showing a relationship between a clip and a protrusion, a part of which is enlarged in FIG.

FIG. 3 shows a clip, (a) is a front view, (b) is a right side view, (c) is a left side view, (d) is a top view, and (e) is a bottom view.

4A and 4B show a relationship between a clip and a protrusion, FIG. 4A is a sectional view showing a state before the protrusion is press-fitted into the fitting recess of the clip, and FIG. 4B is a sectional view showing the protrusion being press-fitted into the fitting recess. It is sectional drawing which shows the state which fixed the wire harness to the connection box main body.

FIG. 5 is a perspective view showing a conventional structure for fixing a wire harness to an electric connection box.

FIG. 6 is a perspective view showing a structure for fixing a wire harness to another conventional electric connection box.

[Explanation of symbols]

17 Electric connection box 19 wire harness 21 Connection box body 21a upper surface 23 Projection 25 Fitting recess 29 clips

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 63-87157 (JP, U) Rikai flat 4-18783 (JP, U) Rikai 57-203591 (JP, U) Rikai flat 2- 75923 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02G 3/08 H02G 3/30 B60R 16/02 F16L 3/08 H05K 7/00

Claims (2)

(57) [Claims] 1. A structure for fixing a wire harness to an electric connection box for fixing the wire harness to the connection box main body, wherein the wire harness is fixed to the connection box main body along a height direction.
Protrusion of a cylindrical body that is formed by four columns
And a fitting recess formed of a cylindrical hole space in which the columnar body can be press-fitted and bends toward the center of the columnar body at the time of press-fitting,
A clip having an annular mounting part through which the wire harness is inserted and supported, and the wire harness is fixed to the projection part via the clip, the structure for fixing the wire harness to an electrical connection box. . 2. A wire to the electrical junction box according to claim 1.
A harness fixing structure, wherein the protrusion is the connection box.
Projected from the upper surface of the main body, the wire harness is
When the protrusion is in front of the connection box
The wire harness is pressed into the fitting recess and
An electrical connection characterized by being fixed on the upper surface of the main box body.
Fixing structure of the wire harness to the connecting box.