JP3134753B2 - Wire harness corrugated tube clamp mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp mounting structure for a corrugated tube of a wire harness, and more particularly to a structure for easily adjusting a mounting position of a clamp to a corrugated tube.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 4 to 6, a corrugated tube 1 for inserting and protecting a wire harness.
In some cases, a synthetic resin clamp 2 for fixing the corrugated tube 1 to a predetermined position on a vehicle body is attached. On the outer peripheral surface of the corrugated tube 1, ring-shaped concave portions 1a and convex portions 1b are formed alternately and continuously at a constant pitch P (for example, 6 mm) in the axial direction.

As shown in FIG. 5, the clamp 2 is divided into two parts so as to be fitted to the outer peripheral surface of the corrugated tube 1 from the radial direction, and one end of each of the divided parts 2A and 2B is connected to each other. Are openably and closably connected by a thin hinge portion 2a, and a lock claw 2b of one divided portion 2A is locked in a lock hole (not shown) of the other divided portion 2B, as shown in FIG. , Divided parts 2A, 2
B is integrally locked.

A plurality of guide projections 2c, 2c which fit into the recess 1a among the recesses 1a and the projections 1b of the corrugated tube 1 are provided on the inner peripheral surface of each of the divisions 2A, 2B.
Are formed respectively.

When the clamp 2 is attached to the corrugated tube 1, the clamp 2 is usually attached to a predetermined position of the corrugated tube 1 using a clamp jig.

[0006]

However, if the clamp 2 is attached while the corrugated tube 1 is pulled or compressed more than necessary, the clamp 2 is removed by the elasticity of the corrugated tube 1 when the clamp 2 is removed from the clamp jig. In some cases, the mounting position of No. 2 may shift. Further, if the clamp jig set on the assembly drawing board of the wire harness is used for a long time, settling of the clamp 2 may be shifted due to settling or the like.

Further, the guide projection 2c of the clamp 2 set on the clamp jig is connected to the projection 1 of the corrugated tube 1.
b, when the protrusions 2c and 1b face each other, the guide protrusion 2c matches the recess 1a.
It is necessary to move the clamp 2 by a half pitch (for example, 3 mm) in the axial direction. In this case, the mounting position of the clamp 2 is shifted. In particular, in a portion where the tolerance between two adjacent clamps is, for example, ± 5 mm,
When the position of both clamps 2 and 2 is shifted by 3 mm,
The size deviation between the clamps 2 and 6 is 6 mm, which is a defective product. Still further, if the clamp 2 is attached in a unit amount without using the clamp jig, the attachment position of the clamp 2 may be shifted.

On the other hand, when the clamp 2 is fixed to a predetermined position on the vehicle body, the clamp 2 is difficult to be fixed due to a variation in the mounting position on the vehicle body side. is there.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a corrugated tube clamp structure of a wire harness in which a mounting position of a clamp to a corrugated tube can be easily adjusted. Is what you do.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a two-part mounting method in which a ring-shaped uneven portion is fitted at a constant pitch in an axial direction from a radial direction to a corrugated tube formed on an outer peripheral surface. Wherein the upper and lower portions of the slit are shifted by one pitch in the axial direction with respect to a slit formed in the outer peripheral surface of the corrugated tube in the axial direction, thereby forming the uneven portion in a screw shape. On the other hand, on the inner peripheral surface of the clamp, a screw-shaped guide convex portion that fits into the concave portion of the screw-shaped concave / convex portion is formed so that the clamp can be rotated and moved in the axial direction. The present invention provides a clamp structure for a corrugated tube of a wire harness.

According to the present invention, the upper portion and the lower portion of the slit are shifted by one pitch in the axial direction with respect to the slit formed in the corrugated tube, and the concave portion and the convex portion are formed in a screw shape (spiral shape). Temporarily fix with. In this state, the threaded guide projection of the clamp is fitted into the threaded recess of the corrugated tube while the split clamp is fitted to the outer peripheral surface of the corrugated tube from the radial direction.

Thus, when the clamp is rotated around the axis of the corrugated tube, the clamp is moved in the axial direction of the corrugated tube by the engagement between the threaded concave portion of the corrugated tube and the threaded guide convex portion of the clamp. It is possible to easily adjust the mounting position of the clamp on the corrugated tube.

In a state where the corrugated tube provided with the linear slit is not twisted, and the concave and convex portions are annularly adjacent to each other, the convex portion is marked up and down every two pitches with the slit as a boundary. When the mark is formed, the marks may be positioned vertically at every other pitch with the slit as a boundary.
(Claim 2)

When the corrugated tube is twisted and temporarily fixed by twisting the corrugated tube as described above, if the worker looks at the mark and works, the corrugated tube has one uneven portion.
The clamp can be accurately twisted so as to be shifted only by the pitch, and if the clamp is attached in this state, the fine adjustment of the position of the clamp can be surely performed.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 3 show an embodiment of the present invention. As shown in FIG. 2A, a ring-shaped concave portion is provided on an outer peripheral surface of a corrugated tube 3 at a constant pitch P (for example, 6 mm) in an axial direction. 3a and the convex portions 3b are formed alternately and continuously. In addition, corrugated tube 3
a is provided with a linear slit 3c in the axial direction.

As shown in FIG. 2A, black circle marks 7 are provided at every two pitches on the convex portions 3b, 3b of the upper portion 3d and the lower portion 3e opposed to each other across the slit 3c. The mark 7 is for making it easy to understand the amount of shift between the upper portion 3d and the lower portion 3e of the slit 3c of the corrugated tube 3. The corrugated tube 3c is provided with a slit 3c that is linear in the axial direction. The slit 3c is provided in the entire length direction from one end to the other end of the corrugated tube 3c.

As shown in FIG. 2B, the upper part 3d and the lower part 3e of the slit 3c of the corrugated tube 3 are shifted by one pitch P in the axial direction. Specifically, the upper part 3d
Is shifted leftward, and the lower portion 3e is shifted rightward. Thereby, the concave portion 3 a and the convex portion 3 of the corrugated tube 3 are formed.
b is formed again into a screw shape (spiral shape) inclined with respect to the axial direction of the corrugated tube 3c. When the corrugated tube 3 is long, the corrugated tube 3 may be partially temporarily fixed in order to maintain the thread shape of the uneven portions 3a and 3b.

On the other hand, as shown in FIG.
The corrugated tube 3 is provided with two divided portions 4A and 4B so as to be fitted to the outer peripheral surface of the corrugated tube 3 from the radial direction. One end of each of the divided portions 4A and 4B is connected to be openable and closable by a thin hinge portion 4a, and one of the divided portions 4A.
By locking the lock claw 4b into a lock hole (not shown) of the other divided portion 4B, the divided portions 4A and 4B are integrally locked as shown in FIG.

On the inner peripheral surface of each of the divided portions 4A and 4B, of the concave portion 3a and the convex portion 3b of the corrugated tube 3,
A plurality of screw-shaped guide protrusions 4 fitted into the recesses 3a
c and 4c are formed parallel to each other.

When attaching the clamp 4 to the corrugated tube 3, the threaded guide projections 4c of the divided portions 4A, 4B are fitted to the outer peripheral surface of the corrugated tube 3 while fitting the divided portions 4A, 4B of the clamp 4 from the radial direction. ,
4c are fitted into the threaded recesses 3a, 3a of the corrugated tube 3, respectively.
To lock.

As a result, the thread-shaped concave portions 3a, 3a of the corrugated tube 3 and the screw-shaped guide convex portions 4c, 4c of the clamp 4 mesh with each other. Therefore, as shown in FIG. 1, when the clamp 4 is rotated around the axis A of the corrugated tube 3, the clamp 4
In the axial direction B. 6 mm pitch P
, When the clamp 4 makes one rotation, 3mm
Will move.

As described above, in the corrugated tube clamp structure according to the present embodiment, the mounting position of the clamp 4 with respect to the corrugated tube 3 can be easily adjusted only by rotating the clamp 4. Accordingly, it is possible to eliminate the displacement of the position of the clamp 4 due to settling of the clamp jig provided on the wiring harness assembly drawing board, and the corrugated tube 3 can be attached to the vehicle without expansion or contraction.

[0023]

As is apparent from the above description, the corrugated tube clamping structure of the present invention is such that the corrugated tube is shifted by one pitch in the axial direction with the slit as a boundary, and the uneven portion is formed in a screw shape. While fixing the clamp from the radial direction to the outer peripheral surface of the corrugated tube, the screw-shaped guide convex portion of the clamp was fitted into the threaded concave portion of the corrugated tube. When rotated, the clamp can be moved in the axial direction of the corrugated tube by the engagement of the threaded concave portion of the corrugated tube and the threaded convex portion of the clamp, so that the mounting position of the clamp on the corrugated tube can be easily adjusted. Become like

In the case where the corrugated tube is not twisted and the slits are linear and the concave and convex portions are annularly adjacent to each other, and the convex portions are marked up and down at every two pitches with the slit as a boundary. If you work while looking at this mark, you can easily insert the corrugated tube,
The concavo-convex portion can be formed in a screw shape by being shifted by one pitch in the axial direction from the slit.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an attached state of a corrugated tube and a clamp of the present invention.

FIG. 2A is a side view of a corrugated tube,
(B) is a side view of the corrugated tube shifted in the axial direction.

FIG. 3 is a perspective view showing a state before a clamp is attached;

FIG. 4 is a perspective view showing a state where a conventional corrugated tube and a clamp are attached.

FIG. 5 is an exploded perspective view showing a state before a corrugated tube and a clamp are attached.

FIG. 6 is a side cross-sectional view of a fitting portion of the concave portion of the corrugated tube and the guide convex portion of the clamp.

[Explanation of symbols]

 3 Corrugated tube 3a Concave part 3b Convex part 3c Slit 3d Upper part 3e Lower part 4 Clamp 4A, 4B Dividing part 4c Guide convex part P Pitch

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16L 3/10 B60R 16/02 623 H02G 3/30

Claims (2)

(57) [Claims] 1. A split clamp which is fitted in a radial direction from a radial direction to a corrugated tube having ring-shaped concave and convex portions formed on an outer peripheral surface thereof at a constant pitch in an axial direction. The upper and lower portions of the slit are displaced by one pitch in the axial direction with respect to the slit, and the uneven portion is formed into a screw shape, while the inner peripheral surface of the clamp is provided with the concave portion of the screw-shaped uneven portion. A corrugated tube clamp mounting structure for a wire harness, characterized in that a screw-shaped guide convex portion is formed so as to fit into the wire harness so that it can be moved in the axial direction while rotating the clamp. 2. In a state where the slits are linear and the concave and convex portions are annularly adjacent to each other without twisting the corrugated tube, the convex portions are marked up and down every two pitches with the slit as a boundary. 2. The clamp mounting structure for a corrugated tube of a wire harness according to claim 1, wherein the marks are positioned up and down at every other pitch with a slit as a boundary when formed.