JPH0736171Y2 - Belt clamp for corrugated tube - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention mainly relates to a belt clamp suitable for clamping the outer circumference of a corrugated tube (corrugated tube).

[Prior Art] For example, Japanese Patent Laid-Open No. 60-44609 discloses a belt clamp for a wire harness in which a buckle portion is integrally formed at one end of the belt portion. The belt clamp is looped by winding the belt portion around the outer periphery of a wire harness or the like and inserting the belt portion into the buckle portion. When the belt portion is tightened in this state, the outer circumference of the wire harness or the like is clamped.

[Problems to be Solved by the Invention] If the outer circumference of a corrugated tube is temporarily clamped using the belt clamp of the above publication, the belt clamp should be strongly tightened in order to prevent relative displacement of the belt clamp in the longitudinal direction of the corrugated tube. Need to tighten.
As a result, the corrugated tube may be crushed and deformed at the clamped portion, and then the appearance of the external appearance may be impaired.

In particular, in many cases, the corrugated tube is of a type in which a part of the outer circumference is cut into a slit shape along the longitudinal direction in order to easily store a bundled wire such as a wire harness therein. If this type of corrugated tube is strongly clamped by a belt clamp, its deformation is also large.

[Means for Solving the Problems] To solve the above problems, the corrugated tube belt clamp of the present invention is configured as follows.

That is, in the belt clamp of the present invention, the buckle portion is formed at one end of the belt portion, and the belt portion is mainly wound around the outer periphery of the corrugated tube and is inserted into the buckle portion to be tightened.

The belt portion has a central rib that extends linearly in the longitudinal direction at a substantially intermediate portion in the axial direction, a pair of side edge ribs that meander in the longitudinal direction on both sides sandwiching the central rib, and the central rib. And a connecting piece formed by connecting both side edge ribs at a plurality of positions in the longitudinal direction.

[Operation] In the above-described configuration, the belt portion of the belt clamp is wound around the outer periphery of the corrugated tube and tightened, whereby both side edge ribs which have been meandering until then are stretched in the longitudinal direction. Along with this, the central rib is strongly tightened through each of the connecting pieces and fits into the groove on the outer circumference of the corrugated tube. As a result, the belt clamp is positioned in the longitudinal direction of the corrugated tube.

Further, when a wire harness other than the corrugated tube is clamped by the belt clamp, there is no possibility that the outer periphery of the wire harness or the like is damaged by the belt portion. Moreover, even in this case, since the central rib is strongly tightened, the clamped state is stable.

[Embodiment] An embodiment of the present invention will now be described with reference to the drawings.

The belt clamp is shown in FIG. 1 in an external perspective view.
In FIG. 1, the belt clamp includes a belt-shaped belt portion 10 having flexibility made of synthetic resin or the like, and a buckle portion 20 integrally formed at one end portion thereof. The buckle portion 20 has an insertion hole 22 through which the belt portion 10 can be inserted from the tip side thereof. Inside the insertion hole 22, a locking claw 24 that is elastically locked to a locking tooth row 18 of the belt portion 10 described later is formed. The locking teeth of the belt 10
18 and the locking claw 24 of the buckle portion 20 are engaged so as to allow movement of the belt portion 10 in the insertion direction with respect to the insertion hole 22 of the buckle portion 20 and prevent movement of the belt portion 10 in the removal direction. Stop.

By the way, the belt portion 10 includes a central rib 12 located substantially at an intermediate portion in the width direction thereof, and a pair of a pair of ribs, which are arranged on both sides of the central rib 12 with a predetermined space 15 between the central ribs 12. The side edge ribs 14 are mainly configured. The central rib 12 extends linearly in the longitudinal direction of the belt portion 10, and the pair of side edge ribs 14 also extends in a meandering shape in the longitudinal direction.

The central rib 12 and the side edge rib 14 are integrated with each other at the buckle portion 20 and the tip portion of the belt portion 10, and also by the connecting pieces 16 arranged at a plurality of longitudinal positions in the space 15. They are interconnected.

The width of the central rib 12 is set to be slightly smaller than the teeth of the groove 32 on the outer periphery of the corrugated tube 30 described later. The thickness of the central rib 12, that is, the thickness of the belt portion 10 is set to be the same as or slightly smaller than the depth of the groove 32.

FIG. 2A shows a state in which the outer periphery of the corrugated tube 30 is clamped by the belt clamp, and FIG. 2B shows a sectional view taken along the line IIB-IIB of FIG. 2A. As is clear from these FIGS. 2 (A) and (B),
On one side surface of the central rib 12 and the side edge ribs 14 that form the belt portion 10, a locking tooth row 18 that is continuous along the longitudinal direction of the belt portion 10 is formed. One of the locking tooth rows 18 will lock with the locking claw 24 formed in the insertion hole 22 of the buckle portion 20 as described above.

The corrugated tube 30 is formed with alternating grooves 32 and protrusions 34 continuously in the longitudinal direction in order to increase the rigidity against the external force in the radial direction while having flexibility. The wire harness W is housed inside the corrugated tube 30, and the corrugated tube 30 protects the outer circumference of the wire harness W.

The corrugated tube 30 and the wire harness W are actually continuous with a considerable length. Therefore, the slit 36 is formed in the corrugated tube 30 by cutting a part of the outer periphery thereof along the longitudinal direction. This slit
36 makes it possible to easily store the wire harness W inside the corrugated tube 30 even if the corrugated tube 30 is considerably long.

Next, a clamping work by the belt clamp having the above-mentioned structure will be described. First, the belt portion 10 of the belt clamp is wound around the outer periphery of the portion of the corrugated tube 30 to be clamped, and the end portion thereof is inserted into the insertion hole 22 of the buckle portion 20 to form the belt portion 10 in a loop shape. In this state, the central rib 12 of the belt portion 10 is provided with one of the grooves 32 of the corrugated tube 30 as shown in FIGS. 2 (A) and 2 (B).
The position corresponding to.

After that, by gripping and tightening the tip of the belt portion 10 that passes through the insertion hole 22 of the buckle portion 20 and projects to the opposite side, the side edge ribs that have been extending in a meandering shape until then.
14 is stretched in its longitudinal direction. As the side edge rib 14 is extended, the central rib is passed through the connecting piece 16.
12 is tightly tightened. As a result, the central rib 12 fits into the groove 32 of the corrugated tube 30 as shown in FIGS. 3 (A) and 3 (B). As a result, the belt clamps are positioned in the longitudinal direction of the corrugated tube 30, and the positional displacement between them is prevented.

In this state, the locking tooth row 18 of the belt portion 10 is locked by the locking claw 24 of the buckle portion 20 to prevent the belt portion 10 from loosening.

The present invention has been described above with reference to the specific embodiment shown in the drawings, but the present invention is not limited to this embodiment, and various embodiments within the scope described in the scope of claims for utility model registration. Can be considered.

For example, the connecting pieces 16 arranged in the space 15 of the belt portion 10 do not necessarily have to be symmetrically arranged on both sides of the central rib 12, and the thickness of each connecting piece 16 is different from that of the central rib 12 and the side edge ribs 14. It may be set to the same size or different sizes. The buckle portion 20 may be integrally formed with a clip that is inserted into a predetermined mounting hole to fix the belt clamp.

Further, in the above embodiment, the pair of side edge ribs 14 in the belt portion 10 meander on a plane shared with the central rib 12, but instead of this, for example, the side edge ribs 14 in a direction perpendicular to the shared plane. The same function can be obtained by meandering.

[Advantage of the Invention] According to the present invention, by tightening the belt portion of the belt clamp with normal strength, the belt clamp is positioned with respect to the longitudinal direction of the corrugated tube while keeping the appearance shape of the corrugated tube appropriate. The relative displacement prevention of is achieved.

Moreover, in the present invention, when a wire harness other than the corrugated tube is clamped by the belt clamp, there is no risk of damaging the outer periphery of the wire harness with the belt portion, and even in this case, the central rib is strongly tightened and clamped. It has the advantage of stabilizing the state.

[Brief description of drawings]

1 is a perspective view showing the appearance of a belt clamp, FIG. 2 (A) is a plan view showing a state where a corrugated tube is loosely clamped by a belt clamp, and FIG. B) is a sectional view taken along the line IIB-IIB in FIG. 2A, FIG. 3A is a plan view in which the corrugated tube is finally clamped by a belt clamp, and FIG. 3B is a plan view. FIG. 3 is a sectional view taken along line IIIB-IIIB of FIG. 10 …… Belt part 12 …… Center rib 14 …… Side edge rib 16 …… Coupling piece 30 …… Corrugated tube 32 …… Groove

Claims (1)

[Scope of utility model registration request] 1. A belt clamp for a corrugated tube, wherein a buckle portion is formed at one end of a belt portion, and the belt portion is wound around the outer periphery of a corrugated tube and is inserted into the buckle portion and clamped by tightening. The belt portion has a central rib that extends linearly in the longitudinal direction at an approximately middle portion in the width direction, a pair of side edge ribs that extend in the longitudinal direction in a meandering manner on both sides of the central rib, and the central rib and A belt clamp for a corrugated tube, which is formed by a connecting piece in which both side edge ribs are connected at a plurality of positions in the longitudinal direction.