JP2574966Y2 - Band clamp - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band clamp for binding and fixing a long member such as a wire harness.

[0002]

2. Description of the Related Art FIGS. 6 to 9 show examples of conventional band clamps (see Japanese Utility Model Laid-Open No. 54-69385 and Japanese Utility Model Laid-Open No. 4-48484).

This band clamp comprises a clamp body 1 and a flexible band 2 provided separately from a synthetic resin.
The clamp body 1 has a mounting hole 4
An anchor projection 5 that can be engaged with the projection is integrally provided.
The anchor protrusion 5 has a pair of elastic claws 5a that function to prevent the anchor projection 5 from slipping out when inserted into the mounting hole 4.

The clamp body 1 has a flat support surface 7 for supporting a wire harness 6 as a long member, and the clamp body 1 has two insertion holes 8 through which the band portion 2 is inserted.
Are formed substantially parallel to the support surface 7. In both insertion holes 8, flexible check claws (not shown) for preventing movement of the band portion 2 in directions opposite to each other are provided.

[0005] On the surface of the band portion 2, concave portions (not shown) for engaging with the check pawls are continuously provided in multiple stages.
Is attached to the clamp body 1 in a state where the one end side is inserted into the one insertion hole 8 so that the movement in the opposite insertion direction is prevented. After the band portion 2 attached in this manner is wound around the wire harness 6 and inserted into the other insertion hole 8, the band portion 2 is pulled and tightened in the insertion direction (arrow X direction in FIG. 7). As a result, the wire harness 6 is pressed against the support surface 7, and in this state, the check pawl and the concave portion engage. Thereby, the wire harness 6 is bound and fixed to the band clamp.

[0006] The band clamp to which the wire harness 6 is fixed is attached to a predetermined position of the panel 3 by engaging the anchor projection 5 with the attachment hole 4.

[0007]

In such a conventional band clamp, when the band portion 2 is tightened without the wire harness 6, as shown in FIG.
The band portion 2 bent at both end portions 7a has a predetermined rigidity, so that the band portion 2 is bent between both end portions 7a.
There is a gap between the support surface 7 and the support surface 7.

Generally, when the wire harness 6 is tightened by the band portion 2, the wire harness 6
In the winding direction (arrow Z direction in FIG. 7), and is easily bound and fixed by the support surface 7 in the winding direction (Z direction).

However, especially when the diameter of the wire harness 6 is small, the wire harness 6 is biased toward one end 7a.
When the band portion 2 is tightened, the band portion 2 bends between the contact portion with the wire harness 6 and the end portion 7a on the side opposite to the winding direction. The gap may be equal to or larger than the diameter of the wire harness 6. For this reason, even if it is intended that the band portion 2 is tightly bound and the wire harness 6 is bound and fixed, the wire harness 6 is thereafter fixed to the central portion 7 of the support surface 7.
It moves to the b side, and as a result, the pressing force on the wire harness 6 may decrease.

When the pressing force on the wire harness 6 is reduced, the band clamp moves in the wire wiring direction with respect to the wire harness 6, that is, a so-called lateral displacement easily occurs. That is, as shown in FIG. 9, when the wire harness 6 is arranged on the panel 3 via the band clamp, if the position of the band clamp is shifted, the worker corrects the shift and then arranges the wire harness 6. Poor. Also, after the wiring harness 6 is displaced in the horizontal direction, the wiring harness 6
In addition, the burden on a connector (not shown) connected to the wire harness 6 increases.

Here, when the band portion 2 is tightened, the movement of the wire harness 6 in the winding direction (Z direction) is prevented.
It is also possible to tighten the wire harness 6 at the central portion 7b of the support surface 7. However, in order to obtain a high pressing force at the central portion 7b, the band portion 2 must be further tightened against the rigidity of the band portion 2, and the strength of the band portion 2 must be increased unnecessarily.

Further, as shown in FIG. 10, a band clamp in which a part 2a of the band portion 2 is formed in accordance with the outer peripheral shape of the wire harness 6 in order to prevent lateral displacement of the band clamp is disclosed. See JP-A-2-74684). However, this type of band clamp is suitable for a wire harness having a large diameter, but is not suitable for preventing a lateral displacement of the wire harness 6 having a small diameter.

The present invention has been made in order to solve such a conventional problem. The purpose of the present invention is to prevent the lateral displacement of the wire harness irrespective of the size of the diameter. An object of the present invention is to provide a band clamp capable of securely binding and fixing a small wire harness.

[0014]

In order to solve the above-mentioned problems, a band clamp according to the present invention comprises a clamp body having a support surface for supporting a long member, and a long member supported on the support surface. and a band of flexible bundling fixed to the supporting surface of the clamp body, butt than Oite center portion both end portions in a direction in which said supporting surface intersecting with the elongate member
It is characterized in that it is formed at an intermediate height.

[0015]

Since the support surface is formed at a middle height in a direction intersecting with the long member, a gap is hardly generated between the band portion and the support surface even if the band portion is curved. Therefore, the diameter of the long member is small. Even in this case, a strong pressing force acts on the elongated member from the band portion regardless of the support position of the support surface, and the elongated member is securely bound and fixed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view showing the overall structure of a band clamp according to an embodiment of the present invention, FIG. 2 is a sectional view of a main part of the band clamp of FIG. 1 viewed from the direction A, and FIG. 4 is an arrow view from the direction A showing the use state of the band clamp of FIG. 1, and FIG. 4 is an arrow view from the direction A of another use state of the band clamp of FIG. And the description thereof is omitted.

As shown in FIG. 7, this band clamp includes a clamp body 1 having a support surface 7 and a concave portion 9.
The clamp main body 1 is provided with two insertion holes 8 each having a check claw 10 inside. When the band portion 2 is inserted into each insertion hole 8, the check claw 10 and the concave portion 9 are engaged with each other in a state where the movement of the band portion 2 in the anti-insertion direction is prevented.

The support surface 7, in the direction crossing substantially perpendicularly to the wire harness 6, as near the central portion 7b is most projects, is formed in a convex curved from both ends 7a toward the center 7b.

When the wire harness 6 having a small diameter is bound and fixed by such a band clamp, the band portion 2 is wound around the wire harness 6 and the insertion hole 8 is formed as in the conventional case.
After that, it is pulled and tightened in the insertion direction (the direction of arrow X in the figure).

At the time of tightening the band 2, the wire harness 6
When the band portion 2 is tightened while holding the wire harness 6 near the central portion 7b of the support surface 7 so that the
As shown in the figure, the wire harness 6
It is bound and fixed near b.

At this time, since the support surface 7 has a middle height which is curved in the same direction as the band portion 2, it is generated between the support surface 7 and the band portion 2 as compared with the case where the support surface 7 is flat. The gap becomes smaller, and the pressing force on the wire harness 6 increases.

Thus, the lateral displacement of the band clamp can be prevented without increasing the strength of the band portion 2. Also,
When the band clamp is attached to the panel 3, the positional relationship between the wire harness 6 and a connector (not shown) can be kept constant, and the burden on the wire harness 6 and the like can be reduced.

Further, even if the position of the wire harness 6 moves during the tightening and is shifted to the end 7a side, as shown in FIGS. 4A and 4B, the support surface 7 and the band 2 The gap generated between them becomes smaller. For this reason, the band 2
Is strongest at the contact portion with the wire harness 6, and there is no possibility that the wire harness 6 will move to the central portion 7b after tightening. That is, the wire harness 6 can be securely bound and fixed regardless of the support position of the support surface 7.

It is to be noted that a wire harness having a large diameter can be bound and fixed in the same manner as in the related art.

The shape of the support surface 7 is not limited to a curved shape, but may be any height as long as it is middle height. For example, as shown in FIG. 5, a flat inclined surface 7c may be formed from the protruding central portion 7b toward both end portions 7a.
c, the wire harness 6 can be satisfactorily bound and fixed.

[0027]

As described above, according to the band clamp of the present invention, even when the diameter of the long member is small, the long member is securely bound and fixed regardless of the supporting position of the support surface. Therefore, the lateral displacement of the band clamp can be reliably prevented regardless of the diameter of the long member.

When the band clamp is attached to a panel or the like and the long member is provided, the position where the long member is provided can be kept constant.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire configuration of a band clamp according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a side surface of the band clamp in FIG.

FIG. 3 is a side view showing a use state of the band clamp of FIG. 1;

4A and 4B are diagrams showing another use state of the band clamp of FIG. 1, wherein FIG. 4A is a side view when tightening is performed in the anti-winding direction, and FIG. FIG.

FIG. 5 is a side view of a band clamp according to another embodiment of the present invention.

FIG. 6 is a perspective view of a clamp body of a conventional band clamp.

FIG. 7 is a side view showing a use state of a conventional band clamp.

FIG. 8 is a side view when the band clamp of FIG. 7 is tightened without a wire harness.

FIG. 9 is a front view when the band clamp of FIG. 7 is attached to a panel.

FIG. 10 is a front sectional view of another conventional band clamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp main body 2 Band part 6 Wire harness (long member) 7 Support surface

Claims (1)

(57) [Scope of request for utility model registration] 1. A clamp body having a support surface for supporting a long member, and a flexible band for binding and fixing the long member supported by the support surface to a support surface of the clamp body. the provided, band clamp the Oite central portion in the direction of the support surface intersecting said elongated member is characterized by being formed into convex projecting from both ends.