JPH08210320A - Hose clip - Google Patents

Abstract

PURPOSE: To follow it up even if a hose has fatigue with the passage of time for good clipping. CONSTITUTION: A spring part 2 is extended on one end side of a circular part, an auxiliary piece 10 is formed on the other side, and an operating lever 3 is rotatingly mounted onto an outer periphery surface. The end of the operating lever 3 is connected to the end of the spring part 2. The spring part 2 is formed with a plurality of wavy parts for extending and contracting the overall length of a hose clip C. By rotating the operating lever 3, and reducing and deforming the circular part 1 while pulling the spring 2, the hose is clipped. The spring 2 shrinks even if the hose has fatigue with the passage of time, so it is possible to maintain a good clipping condition all the time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose clip.

[0002]

2. Description of the Related Art Heretofore, a hose clip has been used for clamping a connecting portion such as a hose or a joint boot. Most of this kind of hose clip is formed by bending a metal strip into an annular shape. Some of them are provided with a means for adjusting the inner diameter so as to be compatible with hoses having various outer diameters. As a conventionally well-known type, there is a worm screw operated by a driver or the like, and there is a strip plate side on which a plurality of engaging grooves in which the worm screw is sequentially meshed are engraved along the circumferential direction. In other words, by screwing the worm screw with a driver, the meshing position with the meshing groove is changed, and thereby one end of the strip is pulled in the tightening direction.

[0003]

By the way, in a hose used in a severe environment of temperature and humidity such as in an engine room of an automobile, deterioration is apt to proceed, and the so-called "fell" ( The phenomenon that the outer diameter is reduced and the hoses lose weight easily occurs. However, with the above-mentioned hose clip, once it is set in the tightened state, it is retained with its inner diameter. Therefore, even if the settling progresses, it cannot follow. Therefore, a gap may occur between the hose clip and the hose, and it is impossible to avoid a decrease in tightening force with time, resulting in poor reliability of connection.

The present invention has been developed and devised in view of the above-mentioned circumstances, and an object thereof is to provide a hose clip which can follow the fatigue of hoses and maintain a satisfactory tightened state. That is.

[0005]

In order to achieve the above object, the structure of the invention of claim 1 is a hose clip formed by bending a metal strip in an annular shape. A spring portion that can expand and contract in the length direction is formed over a predetermined length range, and one end portion of the operation lever is rotatably connected to the other end side from the end edge portion to an inner position via a hinge. In addition, the other end of the operating lever is connected to the other end of the spring.

[0006]

[Operation] When the operation lever is rotated after fitting the hose clip into the mouth of the hose, one end of the hose clip is pulled through the spring part by the "lever action" and approaches the other end. . As a result, the inner diameter of the hose clip is reduced, and the outer peripheral surfaces of the hoses are tightened. When the hoses sag over time, the spring portion contracts in the direction of reducing the inner diameter of the hose clip, so that even if the outer diameter of the hose is reduced, the hose clips well and keeps the tightened state.

[0007]

The effects of the present invention are as follows. According to the invention of claim 1, since the hoses can be tightened only by providing the operation lever and rotating the operation lever, the operability is excellent, and since the "lever action" is utilized, the operation force can be reduced. Contribute to reduction. Also, since the spring part is set, even if the hoses have settled over time, the contraction deformation of the spring part can reduce the overall inner diameter to accommodate this, and therefore it is always good. The tightened state is maintained.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. The entire hose clip C is formed of a metal (for example, stainless steel) thin plate material, and includes an annular portion 1 capable of tightening the entire circumference of the hose H to be tightened. In the natural state, the annular portion 1 has a partially open shape (diameter expansion state) as shown in FIG. 2 (a), but in the closed state (tightening state) shown in FIG. 2 (b). The ends are partially wrapped so that the hose H can be tightened. A spring portion 2 is integrally and slightly outwardly extended to one end side of the annular portion 1 with the same width as the annular portion 1. The spring portion 2 has an amplitude in the radial direction and is continuously formed with a corrugated portion along the length direction, and each corrugated portion is allowed to flex and deform in the expansion / contraction direction. This makes it possible to expand or contract the entire length of the hose clip C, that is, the inner diameter thereof.

On the other hand, on the other end side of the annular portion 1, at a position slightly inward of the edge thereof, an operating lever 3 formed to have substantially the same width as the annular portion 1 is rotated by a hinge pin 4. It is possible to install. The details are as shown in FIG. 3, and a bearing cylinder 5a is formed by cutting and raising in the central portion on the side of the annular portion 1, and a pair of left and right bearing cylinders 5b formed at the end edge on the side of the operation lever 3 are provided. The operation lever 3 is rotatably attached by fitting the hinge pins 4 in parallel on both sides, inserting the hinge pins 4 into these, and then crushing the tips to prevent them from coming off. Further, the tip end side of the operating lever 3 is connected to the tip end of the spring portion 2 as shown in FIG. That is, the locking claw 6 is formed in a protruding manner at a position near the tip of the operating lever 3 by cutting and raising, while the locking hole 7 is opened at the tip of the spring portion 2 and locked in the locking hole 7. The hook 6 is hooked to connect the two. Further, in this example, since two locking claws 6 are set and arranged along the circumferential direction in the example, by selecting one of them and engaging the locking hole 7,
It is also compatible with various hose diameters. If it is not necessary to adapt to various hose diameters, the operation lever 3 and the spring portion 2 may be simply connected by welding. In the natural state, the operating lever 3 is
It is in the standing posture as shown in FIG. 2 (a), and becomes a lying posture along the outer circumference of the annular portion 1 with the rotation operation. Then, the operation lever 3 is held in this lying position as follows (see FIG. 4). That is, a curling 8 is provided outward at the tip edge of the operating lever 3, and a fixing claw 9 is formed at a corresponding position on the outer peripheral surface of the annular portion 1.
Initially, the fixing claw 9 is cut and raised substantially outward in the radial direction in a dogleg shape, but when the operation lever 3 is held in the inclining state, the curling 8 is crimped while being wound.

The hose clip C of this example is constructed as described above. With the hose clip C in the state (diameter expansion state) shown in FIG. 2A, the hose clip C is inserted into the hose H and positioned at the mouth of the hose H. Next, when the operation lever 3 is rotated counterclockwise in FIG. 2, the spring portion 2 receives a tensile force to reduce the amplitude of each corrugated portion, and brings both ends of the annular portion 1 closer to each other. In this case, the operation of the operating lever 3 can be performed with a relatively light operating force by the "levering action", so that the burden on the operator is effectively reduced. Then, when the operating lever 3 is operated until it comes into close contact with the outer peripheral surface of the annular portion 1, the fixing claw 9 immediately causes the curling 8 portion to be caulked. As a result, the inner diameter of the annular portion 1 is reduced so that the end on the side where the operation lever 3 is attached overlaps with the lower side of the opposite end, so that the hose H runs along the entire circumference. Tighten almost evenly.

Further, in this example, since the spring portion 2 is provided, when the hose H sags over time and the outer diameter is contracted, the respective waveform portions of the spring portion 2 gradually change in amplitude accordingly. It returns and deforms in an increasing direction. Due to such a deformation operation of the spring portion 2, the inner diameter of the hose clip C is gradually reduced, so that the hose H can be well followed. Therefore, the hose clip C always maintains a good tightening state regardless of the change over time of the hose H, and thus the reliability of the clamp for the hose H is enhanced. Further, in this example, the operation lever 3 is arranged at a position slightly inward from the end edge of the annular portion 1, so that the auxiliary piece 10 is formed on the tip side of the operating lever 3 in the annular portion 1. To be done. In the case where the auxiliary piece 10 is not provided, that is, when the operation lever 3 is arranged at the end edge of the annular portion 1, a gap is generated between the spring portion 2 and the hose H, but Piece 1
If 0 is provided, such a gap does not occur, so that the tightening condition is uniform over the entire circumference of the hose H.

The present invention can be modified in various ways,
The following modifications are also included in the technical scope of the present invention. Although the operating lever 3 is formed of a plate material in this example, it may be formed of a wire material as shown in FIG. That is, the operating lever 3 is formed by folding a single metal wire rod in half and forming a wide operating portion 3a at the tip. On the other hand, both ends (lower end of the operation lever 3) of this wire rod are bent inward at right angles to form a support shaft 3b. On the other hand, on the side of the annular portion 1, a pair of bearing cylinders 11 are formed by cutting a part of both side edges, and the support shaft 3b is wound to support the operation lever 3 so as to be rotatable. There is.

Even if the operating lever 3 is formed of a wire rod, the tightened state is maintained by caulking the fixing claws as in the above-described embodiment, and other configurations are the same as those in the above-described embodiment. Exert the effect of. The spring portion 2 does not necessarily have to be formed of a leaf spring, and may be a coil spring 2a as shown in FIG. In this case, both ends of the coil spring 2a are formed with hook portions 2b and 2c, respectively, which are then attached to the annular portion 1
And the connection is made by hooking on the locking claw 6 on the operation lever 3 side. Further, the spring portion 2 may be a corrugated wire rod as shown in FIG. In this example, the direction of the amplitude of the spring portion 2 is set so as to follow the peripheral surfaces of the auxiliary piece 10 and the operating lever 3 when the hose clip is in the tightened state. The means for holding the operation lever 3 in the laid posture may be one as shown in FIG. That is, the annular portion 1
On the side, both side edges are opposed to the inside so that the upright pieces 12 are upright, while the operation lever 3 side is provided with a slit 13 into which both upright pieces 12 can be inserted, and when the operation lever 3 is laid down. The upright pieces 12 are respectively inserted into the corresponding slits 13, and then the upright pieces 12 are bent together and caulked.

[Brief description of drawings]

FIG. 1 is a perspective view of a hose clip.

FIG. 2 is a sectional view showing a tightening operation of a hose clip.

FIG. 3 is a perspective view showing a hinge portion of an operation lever.

FIG. 4 is a perspective view showing the periphery of the fixing piece.

FIG. 5 is a perspective view showing a connecting portion of a spring portion.

FIG. 6 is a perspective view showing a main part of another example of the operation lever.

FIG. 7 is a perspective view showing another example of the spring portion.

FIG. 8 is a perspective view showing still another example of the spring portion.

FIG. 9 is a perspective view showing another example of caulking the operation lever.

[Explanation of symbols]

 1 ... Annular part 2 ... Spring part 3 ... Operating lever 10 ... Auxiliary piece

Claims (1)

[Claims] 1. A hose clip formed by bending a metal strip into an annular shape, wherein a spring portion that can expand and contract in the length direction is formed on one end side thereof over a predetermined length range, and the other end. One end of the operation lever is rotatably connected to the side from the end edge portion to an inner position via a hinge, and the other end of the operation lever is connected to the other end of the spring. A hose clip characterized by having.