JPH0669581U - Hose clip - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to easily perform the deformation operation between the expanded and contracted states. [Structure] The first knob piece 4 is provided on one end side of the hose clip 1.
Is formed, and the second knob piece 6 facing the other is formed on the other end side. A locking piece 5 is formed on one knob piece, and a temporary fixing claw 9 is formed on the other knob piece. Then, when the knob pieces 4 and 6 are operated to approach each other, the guide pieces 7 and 10 are arranged such that the locking pieces 5 and the temporary fixing claws 9 are brought into sliding contact with each other to relatively displace the knob pieces 4 and 6 in the axial direction of the hose clip H. To form. As a result, the hose clip H is held in the expanded state only by operating the knobs 4 and 6 by the knobs.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a so-called holderless type hose clip that can maintain the expanded state without using a holder.

[0002]

[Prior art]

 Conventionally, a hose clip that uses its own spring force to tighten the hose has generally been designed so that it can be carried in with the diameter expanded in advance in consideration of site work. As a type of holding the expanded diameter state, a holder type in which both ends of the hose clip in the expanded diameter state are straddled and held by U-shaped members called holders is known. This type has been widely used as a device for simply maintaining the expanded state, but if the holder is forcibly pulled out to release the expanded state, the holder may be repelled by the spring force of the hose clip itself. There was a problem such as scattering around the work site.

Therefore, in recent years, the use of holders has been abolished, and the holderless type in which the hose clip itself has a function of holding the expanded state is increasing. An example thereof is that of Japanese Utility Model Laid-Open No. 3-86277.

In the device disclosed herein, a bridge portion is formed upright on one end side of the hose clip, and an operation end portion to be inserted into the bridge portion and a locking claw are both formed upright on the other end side. By engaging the locking claws with the bridge portion, the expanded state of the hose clip is maintained. To release it, hold the bridge and the operating end with your fingers and shift them in the axial direction.

[0005]

[Problems to be solved by the device]

 However, the above problems have the following problems to be solved. That is, when the hose needs to be replaced, the hose clip must be expanded and deformed to release the tightening to the hose. At this time, the bridge portion and the operating end portion are gripped and brought close to each other, but the retaining pawl must be further engaged with the bridge portion in order to maintain the expanded state. That is, as the operation during this period, a knob operation along the circumferential direction of the hose clip and a displacement operation in the axial direction are required, but since both operations are directions orthogonal to each other, the operation is extremely difficult. In particular, with a hose clip that has a spring force that is too strong to allow the operator to manually operate the knob, a special tool must be used, and such operations in different directions are complicated. It is expected that it will become difficult to manufacture. In addition, the above-mentioned operation may deform the hose clip, which may cause displacement between the operation end portion and the bridge portion.

In addition, the above-mentioned publication has a manufacturing problem that the bridge portion and the operation end portion have complicated shapes, and thus it is extremely difficult to process.

The present invention has been devised and devised in view of the above circumstances, and an object thereof is to provide a hose clip which can be easily operated from a reduced diameter state to an enlarged diameter state and which can be easily manufactured. Is to provide.

[0008]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above-mentioned object is formed by bending a leaf spring material in an annular shape and can clamp a hose or the like when the diameter is reduced in a free state. A first knob piece that stands up in an arch shape is formed, and after passing through the arch portion of the first knob piece, a second knob piece that stands up in the radial direction and can face the first knob piece is formed on the other end side. In order to hold the hose clip in the expanded state, one of the knob pieces is connected to the other by the relative displacement in the axial direction of the hose clip accompanying the knob operation of both knob pieces. One of the knobs is formed with a temporary locking claw that is releasably engaged with the one side, and the temporary locking claw is formed with a guide surface for guiding the engaging operation. is there.

[0009]

[Action]

 When the two knob pieces are brought close to each other, the temporary fixing claw formed on one knob piece engages with the other knob piece side, and the hose clip is held in the expanded state. In this case, the guide surface of the temporary fixing pawl relatively displaces the two knob pieces in the axial direction of the hose clip to perform the engaging operation. On the contrary, when this engagement state is released, the hose clip shifts to the reduced diameter state by its own spring force.

[0010]

[Effect of device]

 The effects of the present invention are as follows. The hose clip expands its diameter by a simple knob operation, so it has excellent operability. Therefore, there is an advantage that a commercially available tool can be used even with a hose clip having a strong spring force. Further, since it is only necessary to add a simple structure for forming the temporary fixing claw and the guide surface to the knob piece, there is a manufacturing convenience.

[0011]

【Example】

 Embodiments embodying the present invention will be described below in detail with reference to the drawings. 1 to 4 show a first embodiment of the present invention. FIG. 1 shows the entire hose clip 1 with the hose H tightened. The hose clip 1 is formed by bending a strip-shaped leaf spring material into an annular shape, and a triangular window 2 is opened at two places on the peripheral surface thereof, and a uniform clamping force is applied to the entire circumference of the hose H. I am able to do it.

A groove portion 3 is opened over a predetermined length range on one end side of the hose clip 1, and an end portion on this side including a part of the groove portion 3 is erected in a radial direction, whereby an arch shape is formed. The first knob piece 4 is formed. A locking piece 5 is formed on one side of the first knob piece 4 so as to project inwardly and substantially horizontally. The locking piece 5 is bent in an arc shape, and the guide surface 7 rubs against the temporary fixing claw 9 of the second knob piece 6 during the diameter expanding operation.

On the other end side of the hose clip 1, a tapered narrow portion is formed over substantially the same length range as the range in which the groove portion 3 is open, and the tip end side thereof is the first knob piece 4 It passes through and has a required gap between both side edges of the groove portion 3 and enters with substantially the same curvature. The tip end of this narrow portion is a second knob piece 6 that stands upright in the radial direction and faces the first knob piece 4, and faces the first knob piece 4 at substantially the same height. Further, a projecting piece 8 is integrally formed so as to project from one side edge of the tip end portion of the second knob piece 6. The projection piece 8 extends toward the first knob piece 4 in a substantially right-angled direction, and then the lower half of the tip side is cut and raised to form a temporary fixing claw 9. The temporary fixing claw 9 is formed to have a width almost the same as that of the locking piece 5, and the side surface thereof forms a smooth arc surface to serve as a guide surface 10 for operating the knobs 4 and 6 by a knob. When they are brought closer to each other, they are brought into sliding contact with the guide surface 7 on the side of the locking piece 5, so that the two knob pieces 4 and 6 are pressed against each other so as to relatively move in the axial direction of the hose clip 1, and thereby the locking piece 5 is moved. And the temporary fixing claw 9 can be engaged with each other.

The hose clip 1 of the present example configured as described above is carried into the connection site of the hose H in the expanded state. At the connection work site, the expanded hose clip 1 is inserted into the mouth of the hose H, and then fitted into a pipe (not shown) to be connected as it is. Then, as shown in FIG. 5, one of the blades of the tool such as pliers is applied to the side edge of the first knob piece 4, and the other blade is applied to the tip of the second knob piece 6. Apply and hold firmly. Then, the knob pieces 4 and 6 are forcibly moved relative to each other in the axial direction of the hose clip 1, so that the temporary fixing claw 9 and the locking piece 5 are released from each other. Thus, the hose clip 1 is reduced in diameter by its own spring force, and the hose clip 1 is automatically tightened.

On the other hand, when the hose H needs to be replaced or the like, as shown in FIG. 2, if the tip end of each of the knob pieces 4 and 6 is pinched with the tool T and gripped, both tab pieces are held. 4 and 6 approach each other, and the guide surfaces 7 and 10 of the locking piece 5 and the temporary fixing claw 9 are in sliding contact with each other. At this time, the second knob piece 6 is relatively displaced in the direction of the arrow in FIG. 2 (the direction along the axial center direction of the hose clip 1) by the external force acting on the guide surfaces 7 and 10 in the pressing direction. Then, when the locking piece 5 passes through the temporary fixing claw 9, the entire second knob piece 6 returns, and as a result, the locking piece 5 and the temporary fixing claw 9 engage with each other. Thus, since the hose clip 1 is held in the expanded state again, it is possible to immediately fit the newly replaced hose H.

As described above, according to the present embodiment, when the hose clip 1 is held in the expanded state again, if the knob pieces 4 and 6 are simply squeezed, the locking piece 5 and the temporary fixing claw 9 are separated. Since the engaging operation is automatically guided, the operability is excellent, and the repair / replacement work of the hose H can be speeded up. Further, during the operation for releasing / holding the expanded diameter state, the two knob pieces 4, 6 are only deformed in the axial direction and are not deformed in the radial direction (height direction). It has an excellent shape-retaining function and is effective when there is no space around the hose clip 1. Further, since the temporary fixing means has a remarkably simple structure, it is expected that the manufacturing efficiency of the hose clip 1 will be improved.

FIG. 6 shows a second embodiment of the present invention. In the second embodiment, a projecting piece 8 is formed on the first knob piece 4 side and is directly locked to the side edge of the second knob piece 6. It was done like this. By doing so, the configuration can be further simplified. However, even in this case, in order to smoothly hold and release the expanded state, the locking piece having the guide surface formed on the second knob piece 6 may be projected.

[Brief description of drawings]

FIG. 1 is a perspective view showing a tightened state of a hose.

FIG. 2 is a perspective view showing a main part during a diameter expansion operation.

FIG. 3 is a plan sectional view showing an engaging operation.

FIG. 4 is a perspective view showing a main part in a diameter-expanded state.

FIG. 5 is a perspective view showing a releasing operation.

FIG. 6 is a perspective view showing a hose clip 1 of a second embodiment.

[Explanation of symbols]

 1 ... Hose clip 4 ... 1st knob piece 5 ... Locking piece 6 ... 2nd knob piece 9 ... Temporary fixing claw

Claims (1)

[Scope of utility model registration request] 1. A leaf spring material is bent in an annular shape and a hose or the like can be clamped when the diameter of the leaf spring material is reduced in a free state, and a first knob piece that is erected in an arch shape in the radial direction is provided on one end side thereof. A hose clip that is formed and has a second knob piece formed on the other end side thereof that passes through the arch portion of the first knob piece and then stands up in the radial direction so as to face the first knob piece. In order to maintain the expanded state, one of the knob pieces is disengageably engaged with the other knob piece side by the relative displacement in the axial direction of the hose clip accompanying the operation of both knob pieces. And a guide surface for guiding the engaging operation of the hose clip.