JPH0587391U - Hose clip - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the hose clip, which is temporarily fixed to the hose, from shifting in the axial direction and to prevent the tightening function of the clip body from being impaired. [Structure] In a clip body 1 capable of being held in a diameter-expanded state, a slip prevention member 3 made of a spring plate material is fitted on the outer peripheral surface of the clip main body 1, and further the positioning pieces 10 and 11 are attached to the slip prevention member 3. It is formed and elastically contacted with the outer peripheral surface of the hose H. As a result, the displacement of the hose clip C with respect to the hose H is restricted, and the hose H is clamped around the entire circumference by the tightening ring portion 1a of the clip body 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hose clip, and more particularly to a hose clip having a function of preventing the hose from slipping.

[0002]

[Prior Art]

 The hose clip generally uses its own spring property to tighten the hose. Therefore, the diameter is the smallest in the natural state, and even if it is carried into the site as it is, the diameter expansion operation must be performed on the spot, and the workability is poor. It is desirable that the hose be delivered to the site in a state of expanded diameter so that it can be fitted into the hose as it is. Further, when it is desired to improve the efficiency at the site, it is sufficient to carry the hose clip to the site in advance with the hose clip attached to the hose, instead of installing the hose clip at the site. By doing this, it is only necessary to cancel the expanded state slightly at the site. However, even with such a method, if the hose clip fell off during transportation or was displaced from the regular tightening position, it would be necessary to reattach it on site or correct the position, which would be rather troublesome. I will make it a thing. Therefore, it is necessary to add a function to position the hose clip on the hose.

Conventionally, a hose clip having this kind of positioning function has been known, and an example thereof is that of Japanese Utility Model Laid-Open No. 1-169690. This is a so-called holder type in which the expanded state of the hose clip is held by a separate holder. An auxiliary spring plate (shift prevention member) with a different curvature from the main body is attached to the inside of the clip body. When the hose is inserted, the top of the shift prevention member contacts the outer peripheral surface of the hose, and the elastic reaction The hose clip is positioned by exerting force on the outer peripheral surface of the hose.

[0004]

[Problems to be solved by the device]

 However, the above-mentioned one has the following problems because the slip prevention member is attached to the inner peripheral side of the clip body.

That is, in the state where the clip body is tightening the hose, as is clear from FIG. 3 (B) in the publication, the portion where the shift preventing member directly contacts the hose and the clip body directly A step difference is created between the contact portion and the thickness of the shift prevention member. As a result, the tightening force on the hose becomes uneven, and the sealability against the hose is reduced accordingly.

Further, since the spring force of the shift prevention member acts on both ends of the clip body in the direction of expanding the diameter of the clip body, it acts in the direction of reducing the tightening force of the clip body. This is not a serious problem for hose clips that require strong tightening force, but it cannot be completely ignored for hose clips used for small diameter hoses.

Furthermore, since the hose deteriorates with time, the outer diameter becomes gradually smaller. The clip body itself closely follows this deterioration with time to tighten the hose, but the action direction of the spring force of the slip prevention member also obstructs this follow-up function, so the sealing function is not changed over time. It becomes a factor to decrease.

In view of the above circumstances, it is an object of the present invention to provide a hose clip that has a positioning function for a hose and that does not impair the tightening function of the clip body.

[0009]

[Means for Solving the Problems]

 To achieve the above object, the structure of the present invention includes a clip body formed in an annular shape for tightening a hose, and a detachable temporary fixing means for holding the clip body in an expanded state. A hose clip for preventing the hose from slipping when the diameter is increased, the slip-preventing member being formed of a spring material and being fitted to the outer peripheral surface of the clip body with a spring force. The anti-slipping member is characterized in that a positioning piece that comes into pressure contact with the outer peripheral surface of the hose when the diameter of the clip body is expanded is formed so as to project inward.

[0010]

[Action]

 With the clip body expanded, fit the hose clip at the intended hose tightening position. At this time, the positioning piece of the shift preventing member makes elastic contact with the outer peripheral surface of the hose to position the entire hose clip. After that, when the temporary fixing means is released, the clip body contracts due to its own spring force. As a result, the hose is tightened around the entire circumference by the clip body.

[0011]

[Effect of the device]

 The effects of the present invention are as follows. Since the positioning piece of the slip prevention member makes elastic contact with the outer peripheral surface of the hose, the hose clip is prevented from shifting in the axial direction of the hose. Further, since the hose is tightened directly by the clip main body over the entire circumference, that is, unlike the conventional case, the hose can be tightened without causing a step, so that a uniform tightening force can be exerted on the hose. Furthermore, since the spring force of the slip prevention member itself does not impair the tightening function of the clip body, the sealability with respect to the hose is ensured and it is possible to effectively cope with the deterioration of the hose over time.

[0012]

【Example】

 Hereinafter, embodiments embodying the present invention will be described in detail with reference to the drawings. The hose clip C is composed of a clip body 1, a holder 2 as a temporary fixing means for holding the clip body 1 in a diameter-expanded state, and a shift preventing member 3 for preventing the hose H from shifting.

The clip body 1 is made of a strip-shaped leaf spring material, and is bent into an annular shape so as to fit the hose H to be tightened to form a tightening ring portion 1a. A narrow portion 4 is formed at one end on one side of the tightening ring portion 1a over a predetermined length range from the tip, and the tip portion stands outward at a substantially right angle to form a first knob piece 5. ing. At the other end, a slot hole 6 is opened in the center over a predetermined length range to receive the first knob piece 5. The narrow portion 4 and the portion where the slot hole 6 is provided form substantially the same peripheral surface. Further, the tip end of the portion where the slot hole 6 is formed has a second knob piece 7 which stands up outward and has a substantially same height as the first knob piece 5 and faces each other. A knob portion for expanding the diameter of the hose clip C is constituted by 5 and 7.

In this embodiment, in order to maintain the expanded diameter state of the hose clip C, both knob pieces 5 and 7 are clamped by the holder 2. The holder 2 is formed in a U shape as a whole so as to be sandwiched between the knob pieces 5 and 7 and sandwiched, and a pair of hooking claws 8 for releasing operation are cut and raised at the upper center of both sides. Has been formed. The holder 2 is forcibly pulled out by engaging a tool (not shown) with the hooking claw 8. The holder 2 is formed by cutting and raising the knob pieces 5 and 7 with a tool such as pliers. It may be something like picking and pulling.

A series of operations for expanding the diameter of the hose clip C, fitting the holder 2 and temporarily fixing the hose clip C is performed by a dedicated device, but of course, can be manually performed. Triangular windows 9 are arranged at two locations on the peripheral surface of the clip body 1 and are opened so that the vertices of the triangles face each other. The two triangular windows 9 are already provided in the prior art, and are devised to uniformly clamp the entire circumference of the hose H.

The shift preventing member 3 is bent in an arc shape using a spring plate material, and is fitted with a spring force to the clip body 1 at a position opposite to both the knob pieces 5 and 7. The shift preventing member 3 is formed to have a width substantially equal to that of the clip body 1 and a length capable of covering a range corresponding to approximately a half circumference of the clip body 1 in a close contact state. Further, first and second positioning pieces 10 and 11 for preventing the hose clip C from being displaced relative to the hose are provided at both ends of the shift preventing member 3. Each of the positioning pieces 10 and 11 is bent inward in a substantially U-shape, and the folded-back portion is elastically contacted with the outer peripheral surface of the hose H, and in this example, as shown in FIG. The hose H can be stably held by being brought into contact with symmetrical positions.

Further, in order to prevent the shift preventing member 3 from laterally shifting with respect to the clip body 1, the first positioning pieces 10 are arranged in a pair of left and right sides sandwiching the base portion of the narrow portion 4 ( (See FIG. 6), the second positioning piece 11 is arranged at the center of one edge of the shift preventing member 3 so as to be engaged with the starting end of the slot hole 6 (see FIG. 5).

As shown in FIG. 2, the hose clip C of the present embodiment is carried into the connection work site of the hose H in a form temporarily attached to the hose H. In order to obtain this form, first, forcibly expanding deformation of the hose clip C is performed (as described above, it is performed by a dedicated device), and in this state, the knob pieces 5 and 7 are sandwiched by the holder 2. The entire hose clip C is held in the expanded state.

After the above diameter expansion work, or prior to the diameter expansion work, the shift prevention member 3 is attached. In this case, the shift prevention member 3 is forcibly expanded and fitted into the tightening ring portion 1a, and at the same time, the first positioning piece 10 is placed in the base portion of the narrow portion 4 and the second positioning piece 11 is placed in the slot hole 6. Lock each one. As a result, the anti-slip member 3 is fitted to the clip body 1 in a state in which the displacement is restricted.

Next, in order to fit the hose clip C into the mouth of the hose H, the clip body 1 is fitted to the end of the hose H and pushed. During this pushing, the first and second positioning pieces 10 and 11 are hooked on the end surface of the hose H, but the hose clip C is hindered in the inserting operation because they are bent and deformed outward and retract. There is no. When the hose clip C is inserted into the hose H at a predetermined position, the first and second positioning pieces 10 and 11 make elastic contact with the outer peripheral surface of the hose H as shown in FIG. Is positioned at the expected tightening position. Therefore, it is possible to avoid a situation in which the hose H is inadvertently displaced during transportation.

In the field, after inserting the hose H into the mouth of the pipe P, hook an appropriate tool (not shown) on the hooking claw 8 of the holder 2 to forcibly pull out the holder 2. For example, the clip body 1 is reduced in diameter by its own spring force, and the hose H 2 is automatically tightened. In this tightening state, as shown in FIG. 4, the hose H is clamped directly by the clip body 1 over the entire circumference, that is, the hose H is tightened without causing a step unlike the conventional one, so that the hose H is uniformly clamped. be able to.

Further, unlike the above-mentioned conventional technique, the spring force of the shift preventing member 3 does not impair the tightening force of the clip body 1, so that the sealing property with respect to the hose H is maintained. Furthermore, since the following function of the clip body 1 when the hose H becomes thin with time is not impaired at all, a high sealing function is maintained for a long period of time.

Further, since the spring force of the shift preventing member 3 acts in the direction of assisting the spring force of the clip body 1, thinning of the clip body 1 can be expected.

In this embodiment, the method of using the holder separately from the clip body as the temporary fixing means has been shown and described (so-called holder method), but instead of this, the holder function is integrated into the clip body. It is also possible to apply to a so-called holderless type that is equipped.

The positions at which the positioning pieces 10 and 11 are formed are not limited to those in this example, but may be formed at the side edges of the tightening ring portion 1a. Further, the clip body is not limited to the leaf spring material, but can be formed of a wire having spring properties.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a temporarily fixed state.

FIG. 3 is a sectional view in a temporarily fixed state.

FIG. 4 is a sectional view in a tightened state.

FIG. 5 is an enlarged view showing the periphery of a second positioning piece.

FIG. 6 is an enlarged view showing the periphery of the first positioning piece.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Clip main body 2 ... Holder (temporary fastening means) 3 ... Shift prevention member 10, 11 ... Positioning piece C ... Hose clip H ... Hose

Claims (1)

[Scope of utility model registration request] 1. A clip main body formed in an annular shape for tightening a hose, a detachable temporary fixing means for holding the clip main body in an expanded state, and a displacement of the clip main body with respect to the hose when the diameter is expanded. In a hose clip having a stopper member for stopping, the stopper member is formed of a spring material and is fitted to the outer peripheral surface of the clip body with a spring force. A hose clip characterized in that a positioning piece, which comes into pressure contact with the outer peripheral surface of the hose when expanded in diameter, is formed so as to project inward.