JP2591296Y2 - Hose clip - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called holderless type hose clip which can maintain an expanded state without using a holder.

[0002]

2. Description of the Related Art Conventionally, a hose clip which uses a spring force of itself to tighten a hose is generally designed so that it can be carried in a state of being expanded in advance in consideration of on-site work. It is. As a type of holding the expanded diameter state, there is known a holder type in which both ends of a hose clip in an expanded state are straddled and held by a U-shaped member called a holder. This type has been widely used to easily maintain the expanded state, but if the holder is forcibly pulled out to cancel the expansion, the holder may be repelled by the spring force of the hose clip itself. However, there are problems such as scattering around the work site.

[0003] Therefore, recently, holder-less types in which the use of a holder is abolished and the diameter of the hose clip itself is provided with a function of maintaining the expanded state are increasing. One example is disclosed in Japanese Utility Model Laid-Open No. 3-86277.

[0004] In the device disclosed herein, a bridge portion is formed upright at one end of a hose clip, and an operating end and an engaging claw inserted through the bridge portion are formed upright at the other end. The diameter of the hose clip is increased by engaging the locking claw with the bridge portion.
When the release is performed, the bridge portion and the operation end portion are gripped with fingers and shifted in the axial direction.

[0005]

[Problems to be Solved by the Invention] However, the above-mentioned ones 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 tightness to the hose. At this time, the bridge portion and the operation end portion are gripped and brought closer to each other, but in order to maintain the expanded diameter state, the locking claw must be further engaged with the bridge portion. In other words, the operation during this time requires a knob operation along the circumferential direction of the hose clip and a displacement operation in the axial direction, but since both operations are directions orthogonal to each other,
Operation is extremely difficult. In particular, hose clips that have a strong spring force so that the operator cannot perform the knob operation by hand must rely on special tools, and those that allow such operations in different directions require a complicated structure. Is expected, and fabrication is difficult. In addition, the operation described above may cause deformation of the hose clip, which may cause a displacement between the operation end and the bridge.

[0006] Further, the above publication has a manufacturing problem that processing is extremely difficult because both the bridge portion and the operation end portion have complicated shapes.

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

In order to achieve the above object, the construction of the present invention is such that a leaf spring material is bent in an annular shape, and a hose or the like can be clamped when the diameter is reduced to a free state. A first knob piece that is formed in an arch shape in the direction is formed, and a second knob piece that stands in the radial direction after passing through an arch portion of the first knob piece on the other end side and is capable of facing the first knob piece. In order to hold the hose clip in an expanded state in the hose clip formed with the above, the side edge of one of the first and second knob pieces is temporarily fixed to the tip end thereof. A protruding piece having a claw is extended toward the other knob piece, and a guide surface which is curved in an arc shape toward the axial direction of the hose clip is formed on the temporary fixing claw, and the two knob pieces are mutually connected. When operated in the approaching direction Guide surface slides against the other knob piece to relatively displace the entire knob piece in the axial direction of the hose clip, so that the engaging operation between the temporary fixing claw and the other knob piece can be guided. It is characterized by the following.

[0009]

When the two knob pieces are brought closer to each other, the temporary fixing claw formed on one of the knob pieces is engaged with one side of the other knob, and the hose clip is held in an expanded state. In this case, the engaging operation is performed by the guide surface of the temporary fixing claw relatively displacing the two tab pieces in the axial direction of the hose clip. Conversely, when the engaged state is released, the hose clip shifts to a reduced diameter state by its own spring force.

[0010]

[Effects of the Invention] The effects of the present invention are as follows. Since the diameter of the hose clip is increased by a simple knob operation, the operability is excellent. Therefore, there is an advantage that a commercially available tool can be used even with a hose clip having a strong spring force. In addition, since it is only necessary to add a simple configuration for forming the temporary fixing claw and the guide surface to the knob piece, there is also convenience in manufacturing.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 to 4 show a first embodiment of the present invention. FIG. 1 shows the whole hose clip 1 in a state where a hose H is tightened. The hose clip 1 is formed by bending a band-shaped leaf spring material into an annular shape. Triangular windows 2 are opened at two places on the peripheral surface thereof, so that a uniform clamping force can be applied to the entire circumference of the hose H. Like that.

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

The other end of the hose clip 1 is formed with a tapered narrow portion over substantially the same length range as the range in which the groove 3 is open. It penetrates and enters the groove 3 with substantially the same curvature while maintaining a required gap with respect to both side edges. The distal end of the narrow portion is erected in the radial direction to form a second knob piece 6 facing the first knob piece 4, and faces the first knob piece 4 at substantially the same height.
Further, a protruding piece 8 is integrally formed to protrude from one side edge of the tip of the second knob piece 6. This protruding piece 8
After extending in a direction substantially perpendicular to the first knob piece 4,
A temporary fixing claw 9 is formed by cutting and raising the lower half of the distal end side. The temporary fixing claw 9 is formed to have substantially the same width as the locking piece 5, and its side surface forms a smooth arc surface to serve as a guide surface 10.
When the knobs are moved closer to each other, they come into sliding contact with the guide surface 7 on the side of the locking piece 5 to push the two knob pieces 4 and 6 relatively so as to relatively move in the axial direction of the hose clip 1. The engagement between the locking piece 5 and the temporary fixing claw 9 is enabled.

The hose clip 1 of the present embodiment constructed as described above is carried to the connection site of the hose H in an expanded state.
At the connection work site, the hose clip 1 in the expanded state is inserted into the mouth of the hose H, and fitted into a pipe (not shown) to be connected as it is. And
As shown in FIG. 5, one of the blades of the tool such as a 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 6. I hold it strongly. Then, since the two knob pieces 4 and 6 are forcibly moved relative to each other in the axial direction of the hose clip 1, the engagement between the temporary fixing claw 9 and the locking piece 5 is released. Thus, the diameter of the hose clip 1 is reduced by its own spring force, and the hose clip 1 is automatically tightened.

On the other hand, when it is necessary to replace the hose H or the like, as shown in FIG. ,
6, 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 (direction along the axial direction of the hose clip 1) due to the external force acting on both the guide surfaces 7, 10 in the pressing direction. And the locking piece 5
Is passed through the temporary fixing claws 9, the entire second knob piece 6 returns, so that the locking pieces 5 and the temporary fixing claws 9 are engaged. Thus, since the hose clip 1 is maintained in the expanded state again, the hose clip 1 can be immediately fitted to 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, simply by operating the knob pieces 4 and 6 simply, the locking piece 5 and the temporary fixing claw 9 are operated.
Excellent operability because the engagement operation with is automatically guided,
The repair and replacement work of the hose H can be speeded up. Also,
During the operation for releasing and holding the expanded state, the two knob pieces 4 and 6 are only deformed in the axial direction, and are in the radial direction (height direction).
Since it does not involve deformation of the hose clip, it is excellent in the function of maintaining the shape of the hose clip, and is effective when there is not enough room around the hose clip 1. Furthermore, since the temporary fixing means has a very simple configuration, an improvement in the manufacturing efficiency of the hose clip 1 can be expected.

FIG. 6 shows a second embodiment of the present invention. In the second embodiment, a protruding piece 8 is formed on the first knob piece 4 side and is directly engaged with a side edge of the second knob piece 6. It is like that. By doing so, the configuration can be further simplified. However, in this case as well, if it is intended to smoothly hold and release the enlarged diameter state, a locking piece having a guide surface formed on the second knob piece 6 may be extended.

[Brief description of the 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 expanding operation.

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

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

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hose clip 4 ... 1st knob piece 5 ... Locking piece 6 ... 2nd knob piece 9 ... Temporary nail

Claims (1)

(57) [Scope of request for utility model registration] 1. A leaf spring material is bent in an annular shape so that a hose or the like can be clamped when the diameter of the leaf spring material is reduced in a free state. A hose clip having a second knob piece formed on the other end side and passing through an arch portion of the first knob piece and then standing in the radial direction and capable of facing the first knob piece; From the side edge of one of the first and second knob pieces, a protruding piece having a temporary fixing claw at the tip end faces the other knob piece in order to maintain the expanded state. A guide surface which is curved in an arc shape toward the axial direction of the hose clip is formed on the temporary fixing claw, and the guide surface is formed when the two knob pieces are operated in a direction approaching each other. Is in sliding contact with the other knob piece Serial by relatively displacing the whole both knob piece in the axial direction of the hose clip, the hose clip being characterized in that to enable guiding the engagement operation of the temporary fixing claw and the other knob side.