KR20140086720A - Hose clamp - Google Patents

Abstract

Provided in the present invention is a hose clamp which can continuously ensure the fastening state of a hose even if the external diameter thereof changes due to aging by including a strip shaped band and a clamping which is installed at the fore-end of one side of the band in order to clamp the fore-end of the other side of the band. The band forms a banding unit by making both ends in a width direction bend inward. The banding unit is formed continuously along the longitudinal direction of the band.

Description

Hose Clamp {HOSE CLAMP}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose clamp, and more particularly, to a hose clamp used for a vehicle or an industrial use.

Generally, hose clamps used in automotive and industrial applications are used to maintain hermeticity by pressing the hose against a pipe or the like.

For example, when an intercooler or the like is used to improve intake efficiency, an air cleaner, an intercooler and an intake manifold of an engine intake port are required to be connected to a plurality of hoses And a plurality of clamps are used for connecting the hose to the hose so that the hose is hermetically connected to the hose.

The hose clamping clamp includes a band surrounding the hose and a tightening part for tightening or loosening the band by changing the inner diameter of the band in a cylindrical shape. The tightening portion includes a tightening bolt that engages with a screw hole formed in the band. As the tightening bolt is rotated, a band screwed into the tightening bolt is tightened or loosened so that the clamp fixes or releases the hose.

However, as described above, the clamp type clamping bolt has some problems.

First, when the hose is hardened and deteriorated as the time passes, the conventional clamp is fixed by a certain fastening force, and when the outer diameter of the hose is reduced, the fastening force is relatively decreased, There is a problem that the hose is removed.

In order to solve this problem, conventionally, there has been developed a structure in which a clamping force is continuously maintained by using a spring or a guide between a part of a band. However, in such a conventional structure, There is a problem that the effect is not large, and above all, there is a big disadvantage that the number of parts is increased and it is difficult to manufacture and the manufacturing cost is increased.

Second, since the screw hole is formed on the surface of the band, the surface becomes rougher. Therefore, during the process of tightening the band on the hose, the screw hole damages the band, resulting in damage to the hose contact portion, such as tearing.

Third, when excessive force is applied to the tightening bolt in tightening the clamp by turning the tightening bolt, there is a high possibility that the clamp and the hose are damaged.

Accordingly, even when the hose is aged and its outer diameter is changed, the hose clamp can maintain the tightened state of the hose securely.

Further, it provides a hose clamp that is simple in structure and easy to manufacture.

It also provides a hose clamp that minimizes damage to the hose during clamping.

Further, the present invention provides a hose clamp capable of preventing an excessive force from being applied to a tightening bolt during clamping, thereby preventing over-tightening.

To this end, the hose clamp includes a band-shaped band and a tightening portion provided at one end of the band and fastening the other end of the band by tightening. The band is bent at both ends in the width direction toward the inside, And the bending portion may have a structure continuously formed along the longitudinal direction of the band.

The bending portion may have an arc-shaped cross-sectional structure convex toward the inside.

The bending portion may have a structure in which the width direction ends are directed outward.

The hose clamp may have a structure in which the inner diameter of the bending portion is relatively smaller than the inner diameter of the band.

The fastening portion includes a housing provided on the band, a fastening bolt rotatably disposed in the housing, a bolt head formed on the tip of the fastening bolt and extending outwardly of the housing, And may include threaded holes that engage the bolts.

The hose clamp may further include an extension part which is provided on the tightening part and extends toward the other end of the band and is located on the inner circumference of the other end of the band.

The extension may be integrally formed on one end of the band.

The hose clamp includes a separating bolt head connected to the bolt head and a separating part formed between the bolt head and the separating bolt head to separate the bolt head from the separating bolt head when a force exceeding the clamping force is applied to the separating bolt head .

The separating portion may have a structure in which the outer circumferential surface of the bolt head is cut toward the center so that the diameter of the joint portion with the separating bolt head is smaller than the diameter of the bolt head.

The separation bolt head may have a structure that is relatively larger than the diameter of the bolt head.

According to the present apparatus, even if the hose is aged and the outer diameter thereof changes, it is possible to reliably maintain the hose fastened state continuously.

Further, the structure is simple and easy to manufacture, and the manufacturing cost can be lowered, so that the price competitiveness of the product can be enhanced.

Further, when the hose is fastened, the screw hole formed in the band is not brought into contact with the hose by the extended portion, so that the hose damage due to the screw hole can be prevented.

Further, it is possible to clamp the hose with an accurate tightening force, thereby preventing damage to the hose and the clamp.

1 is a perspective view illustrating a hose clamp according to an embodiment of the present invention.
2 is a cross-sectional view of a band cross section of a hose clamp according to the present embodiment.
3 is a schematic view for explaining the action of the hose clamp according to the present embodiment.
4 is a side view of the hose clamp according to the present embodiment.
5 is a side cross-sectional view of the hose clamp according to the present embodiment.
6 is a schematic view for explaining a tightening action of the hose clamp according to the present embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Wherever possible, the same or similar parts are denoted using the same reference numerals in the drawings.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

All terms including technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

FIG. 1 shows a hose clamp according to the present embodiment, and FIG. 2 shows a cross section of a hose clamp according to the present embodiment.

1, the hose clamp 10 of the present embodiment includes a band-shaped band 12, a tightening portion 12 which is provided at one end of the band 12 and tightens the other end of the band 12, (20).

When the band 12 is wound on the outer peripheral surface of the hose H and the other end of the band 12 is fastened to the tightening portion 20 provided at one end of the band 12 to reduce the inner diameter of the band 12 So that the clamp 10 presses the hose H tightly.

The band 12 is formed in a strip shape having a length relatively longer than the width. In this embodiment, the band 12 is bent inward at both ends in the width direction to form a bending portion 14, and the bending portion 14 is formed continuously in the longitudinal direction of the band 12 .

The band 12 is divided into a central portion 16 forming a plane along the width direction and both end portions forming a bending portion 14 protruding inward. The bending portions 14 formed at both ends are formed in the same shape. The bending portion 14 protrudes inward so that the inner diameter of the bending portion 14 is relatively smaller than the inner diameter of the central portion 16 of the band 12. [

Therefore, when the band 12 contacts the hose, the banded portion 14 protruding inward is brought into contact with the hose, and the central portion 16 of the band 12 is separated from the hose.

In the present embodiment, the bending portion 14 may have an arc-shaped cross-sectional structure convex inward. The bending portion 14 is formed such that its widthwise end faces outward. The widthwise end of the bending portion 14 faces outwardly, which means that the tangent line that contacts the tip of the bending portion 14 curved in an arc shape is formed so as to face the outside of the hose, not the hose.

As the widthwise end of the bending portion 14 faces outward, the arcuate curved portion of the bending portion 14 is brought into contact with the hose, and the tip is spaced apart from the hose. Thus, when the bending portion 14 presses the hose, the width direction tip of the bending portion 14 is prevented from being pressed against the hose, thereby minimizing hose damage.

The forming position of the bending portion 14 and the degree of protrusion of the band 12 with respect to the central portion 16 are not particularly limited.

By forming the bending portions 14 at both ends of the band 12 in this way, the banding portion 14 elastically bends with respect to the band 12, so that the band 12 itself has an elastic returning force . The elastic return force generated in the band 12 enables the band 12 to continuously apply the pressing force to the hose irrespective of the change in the outer diameter of the hose.

Fig. 3 illustrates well how the hose clamp presses the hose in response to changes in the outer diameter of the hose.

3, when the hose clamp 10 is mounted on the hose H and the band 12 is tightened by the tightening portion 20, the band 12 is bent inward by the bending portion 14 And the central portion 16 between the bending portions 14 are spaced apart from the hose H. [

When the hose clamp 10 is tightened to the tightening pressure set in this state, the band 12 of the band 12 is pressed against the hose H while the band 12 tightens the hose H. Then, the central portion 16 of the band 12, which is flat around the bending portion 14, is elastically deformed while flexibly bending by the subsequent tightening pressure. That is, when the bending portion 14 formed on the band 12 is pressed against the hose H, the central portion 16 spaced from the hose is elastically deformed while being pressed toward the hose. Thus, when the clamp 10 is completely fastened to the hose H, the band 12 is elastically deformed and has its own elastic restoring force.

When the hose is hardened with the lapse of time in the state where the clamp 10 is fastened to the hose H, the outer diameter of the hose gradually decreases.

When the outer diameter of the hose H is reduced, as shown in Fig. 3, the elastic deformation of the band 12, in which the hose is tightened by pressing the hose, corresponds to the reduction of the outer diameter of the hose by the elastic return force, And the tightening pressure is continuously applied to the hose. Thus, the bending portion 14 of the band 12 can keep the tightening pressure for pressing the hose by the elastic return force of the band 12. Therefore, even if the outer diameter of the hose is reduced, the tightening pressure by the band 12 is maintained.

Hereinafter, referring to FIGS. 4 and 5, the tightening portion for fastening and fastening the band will be described as follows.

The throttle unit 20 includes a housing 22 installed in the band 12, a tightening bolt 24 rotatably disposed in the housing 22, a housing 22 formed at the tip of the tightening bolt 24, And a threaded hole 28 formed along the longitudinal direction at the other end of the band 12 and meshing with the tightening bolt 24. [

When the other end of the band 12 having the threaded hole 28 is inserted into the housing 22 and the tightening bolt 24 is rotated in the state of being engaged with the tightening bolt 24, The band 12 is tightened or loosened as it moves past the bolt 24.

The housing 22 may be integrally formed at one end of the band 12, or may be fixedly attached thereto.

In the present embodiment, the bolt head 26 has a hexagonal cross-sectional shape and protrudes outside the housing 22. Thus, the bolt head 26 is rotated by using a tool such as a wrench G having a cross section corresponding to the shape of the bolt head 26 from the outside, so that the clamp 10 is tightened or loosened.

The hose clamp 10 includes an extension 30 which is installed on the throttle 20 and extends toward the other end of the band 12 and is located on the inner circumference of the other end of the band 12.

The extension portion 30 may be integrally formed at one end of the band 12 and may extend beyond the housing 22 of the throttle portion 20. The extension 30 may be formed in the same shape as the band 12 except for the screw hole 28.

The extension 30 extends inwardly of the band 12 and contacts the inner peripheral surface of the other end of the band 12. The extended portion 30 is disposed between the screw hole 28 formed at the other end of the band 12 and the hose H to prevent direct contact of the hose with the surface on which the screw hole 28 is formed.

The length of the extended portion 30 is extended to a position where the screw hole 28 formed at the tip of the other end of the band 12 is extended. When the band 12 is fastened to the hose, Enough to block all is enough.

Thus, the clamp 10 of the present embodiment is provided with a ring-shaped inner band 12 to tighten the clamp 10 without blocking between the band 12 and the hose, Of the screw hole 28 and the hose.

As the extension portion 30 blocks the contact between the hose and the threaded hole 28, the threaded hole 28 formed in the band 12 in the process of tightly attaching the band 12 to the hose with a strong tightening force, It is possible to prevent damage.

The hose clamp 10 clamps the hose by rotating the tightening bolt 24 and moving the other end of the band 12 formed with the screw hole 28 as described above. If the fastening bolt 24 is continuously rotated in this process, the band 12 may be tightened with a force greater than the clamping force necessary for the hose, and damage to the hose as well as the clamp 10 may occur.

Thus, the clamp 10 of the present embodiment has a structure capable of clamping the hose with an appropriate fastening pressure. The hose clamp 10 includes a separating bolt head 40 connected to the bolt head 26 and a separating bolt head 40 formed between the bolt head 26 and the separating bolt head 40, And a separating portion 42 for separating the bolt head 26 and the separating bolt head 40 when a force exceeding the clamping force is applied.

As mentioned above, the bolt head 26 has a hexagonal shape and protrudes outside the housing 22.

The separation bolt head 40 is integrally formed at the tip of the bolt head 26 protruding outside the housing 22. The separating bolt head 40 has a hexagonal cross-sectional shape corresponding to the bolt head 26.

In this embodiment, the separation bolt head 40 has a structure that is relatively larger than the diameter of the bolt head 26. This is to prevent the hexagonal wrench G and the bolt head 26 from interfering with each other when the separation bolt head 40 is rotated by the hexagonal wrench G. [ The hexagonal wrench G used for the separating bolt head 40 is also larger in diameter than the bolt head 26 so that the bolt head 26 is not loosened with respect to the bolt head 26 because the separating bolt head 40 is relatively larger than the bolt head 26. [ do. The bolt head 26 is not rotated by the hexagonal wrench G in a state where the separation bolt head 40 is turned by the hexagonal wrench G and the separation bolt head 40 is removed from the bolt head 26 .

The separating part 42 separates the bolt head 26 from the separating bolt head 40 and has a structure in which the connecting part diameter between the bolt head 26 and the separating bolt head 40 is reduced to match the engaging pressure have.

In this embodiment, the outer circumferential surface of the bolt head 26 is cut toward the center so that the diameter of the joining portion with the separation bolt head 40 is smaller than the diameter of the bolt head 26.

When the coupling bolt head 40 receives the coupling pressure higher than the proper coupling pressure, the separation bolt head 40 is rotated with respect to the bolt head 26 so that the load is concentrated on the separation portion 42, The separation bolt head 40 comes off. Therefore, the further tightening pressure is not applied to the bolt head 26, so that the tightening portion 20 tightens the band 12 in the proper tightening pressure.

The optimum diameter of the separating part 42 may be appropriately adjusted depending on the material of the bolt head 26 and the optimum tightening pressure of the clamp 10 with respect to the hose. For example, when the diameter of the separating portion 42 is reduced, the separating bolt head 40 is separated from the bolt head 26 at a smaller engaging pressure. When the diameter of the separating portion 42 is increased, A larger engagement pressure can be applied.

As described above, when the bolt head 26 is subjected to a force exceeding the clamping pressure set through the separating portion 42, the separating portion 42 is separated from the bolt head 26, 40 can not be applied and the bolt head 26 can not be subjected to the engagement pressure. Therefore, the hose can be fastened by the tightening pressure determined by the optimum fastening pressure of the clamp 10.

The bolt head 26 is continuously engaged with the tightening bolt 24 of the tightening portion 20 even when the separation bolt head 40 is removed and the bolt head 26 26 can be used to loosen or tighten the clamp 10.

While the illustrative embodiments of the present invention have been shown and described, various modifications and alternative embodiments may be made by those skilled in the art. Such variations and other embodiments will be considered and included in the appended claims, all without departing from the true spirit and scope of the invention.

10: Clamp 12: Band
14: Bending part 16:
20: tightening part 22: housing
24: fastening bolt 26: bolt head
28: screw hole 30: extension part
40: separating bolt head 42: separating part

Claims (18)

And a tightening portion provided at one end of the band and tightening the other end of the band to fix the band,
Wherein the band is bent at both side ends in the width direction toward the inside to form a bending portion, and the bending portion is formed continuously along the longitudinal direction of the band. The method according to claim 1,
Wherein the bending portion has an arc-shaped cross-sectional structure convex inward. 3. The method of claim 2,
Wherein the bending portion is formed such that its width direction tip is directed outward. 3. The method according to any one of claims 1 to 2,
The fastening portion includes a housing provided on the band, a fastening bolt rotatably disposed in the housing, a bolt head formed on the tip of the fastening bolt and extending outwardly of the housing, A hose clamp comprising a screw hole engaged with a bolt. 5. The method of claim 4,
And an extension portion which is provided on the tightening portion and extends toward the other end of the band and is located at the other end inner peripheral surface of the band. 6. The method of claim 5,
And the extension portion is integrally formed at one end of the band. 6. The method of claim 5,
A separating bolt head connected to the bolt head and a separating part formed between the bolt head and the separating bolt head to separate the bolt head and the separating bolt head from each other when a force exceeding the clamping force is applied to the head of the separating bolt. 8. The method of claim 7,
Wherein the separating portion is formed such that the outer circumferential surface of the bolt head is cut toward the center so that the diameter of the joint portion with the separating bolt head is smaller than the diameter of the bolt head. 9. The method of claim 8,
Wherein the separating bolt head is relatively larger than the diameter of the bolt head. A band-shaped band, a tightening portion provided at one end of the band and fastening the other end of the band by tightening, and an extension portion provided at the tightening portion and extending toward the other end of the band and located on the inner peripheral surface of the other end of the band Hose Clamps. 11. The method of claim 10,
And the extension portion is integrally formed at one end of the band. 12. The method of claim 11,
The fastening portion includes a housing provided on the band, a fastening bolt rotatably disposed in the housing, a bolt head formed on the tip of the fastening bolt and extending outwardly of the housing, A hose clamp comprising a screw hole engaged with a bolt. 13. The method of claim 12,
A separating bolt head connected to the bolt head and a separating part formed between the bolt head and the separating bolt head to separate the bolt head and the separating bolt head from each other when a force exceeding the clamping force is applied to the head of the separating bolt. 14. The method of claim 13,
Wherein the separating portion is formed such that the outer circumferential surface of the bolt head is cut toward the center so that the diameter of the joint portion with the separating bolt head is smaller than the diameter of the bolt head. 15. The method of claim 14,
Wherein the separating bolt head is relatively larger than the diameter of the bolt head. And a tightening portion provided at one end of the band and tightening the other end of the band to fix the band,
The fastening portion includes a housing provided on the band, a fastening bolt rotatably disposed in the housing, a bolt head formed on the tip of the fastening bolt and extending outwardly of the housing, And a screw hole engaging with the bolt,
A separating bolt head connected to the bolt head and a separating part formed between the bolt head and the separating bolt head to separate the bolt head and the separating bolt head from each other when a force exceeding the clamping force is applied to the head of the separating bolt. 17. The method of claim 16,
Wherein the separating portion is formed such that the outer circumferential surface of the bolt head is cut toward the center so that the diameter of the joint portion with the separating bolt head is smaller than the diameter of the bolt head. 18. The method of claim 17,
Wherein the separating bolt head is relatively larger than the diameter of the bolt head.

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