JPH109465A - Hose clamping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the clamping operation of a hose even in a narrow space by pulling a hose in which a pipe is inserted in the axial direction, releasing a state where maximum diameter of a clip is held by a holder part, and reducing the diameter of the clip fitted to an end of the hose using the resiliency to thereby clamp the hose. SOLUTION: A clip 30 is inserted in a hose 20 in advance, an insertion end 11 of a pipe 10 is inserted deep within an expanded end projection 21 of the hose 20, and thereafter the clip 30 is moved to the expanded end projection 21 side of the hose 20, whereby a bending part of a holder 35 which holds a maximum diameter of the clip 30 is engaged with a holder locking projection piece 12 of a pipe 10. In this state, one or both of the hose 20 and the pipe 10 are pulled in the axial direction, a state where a maximum diameter of the clip 30 is held by the holder 35 is released, and the diameter of the clip 30 fitted to an end of the hose 20 is reduced by the resiliency to thereby clamp the hose 20. Accordingly, the clamping operation of the hose 20 can be easily performed even in a narrow space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a holder for a pipe, which is temporarily fixed to an expanded state close to the maximum diameter by a holder until the pipe is connected to the hose. The present invention relates to a hose tightening device which is excellent in workability and can tighten a hose.

[0002]

2. Description of the Related Art As a conventional hose clip of this type, for example, a hose clip disclosed in Japanese Utility Model Laid-Open No. 5-10891 is known.
As shown in FIG. 13, the opposite end portions 1a, 1b are formed in an annular shape that is inserted and overlapped with each other, and the bent end portions 1a, 1b of the clamp portion 2 having a clamping force for clamping the hose H by elasticity. A holder 3 formed separately from the clip is fitted to 1b. At this time, both ends 1
The holder 3 is fitted to both ends 1a, 1b in the aligned state where the a and 1b are in the same position.
Is designed to be able to temporarily stop in a state close to the maximum diameter against the tightening force.

However, in the conventional hose clip having the above structure, the hose clip and the hose H are fitted and set on the pipe P, and then the hose clip must be removed with a tool such as pliers. Since the tightening force cannot be applied to the workpiece, the working space must be secured, and the work time will be longer due to the change of tools, and the direction of the clamp will be determined by the direction of the work of removing the holder by the worker. Therefore, there is a great deal of variation, and as described above, since a holder H separate from the hose clip is required, there is a problem that the number of parts increases and the cost increases.

The present invention has been made in view of the above situation, and has as its object to simply pull the hose in the axial direction without using a tool or the like, and to move the clip from the maximum diameter in the tightening direction. The hose can be tightened easily and in a short time even in a narrow working space by configuring the hose so that the hose can be easily tightened by reducing the diameter. An object of the present invention is to provide a hose tightening device capable of reducing the variation because the angle can be regulated.

[0005]

In order to achieve the above object, according to the present invention, a hose tightening device includes a pipe having a holder locking projection formed at an insertion end and a bulging end projection. A notch formed in a notch, a clip formed in a ring shape having a notch recess and an insertion protrusion whose opposite ends are inserted and overlapped with each other, and urged in a radially decreasing direction; And an approximately L-shaped holder for holding the clip at its maximum diameter between the cut-and-raised pieces formed at the end of the insertion projection, and the bent part of the holder is connected to the pipe. After being locked to the holder locking projection of the above, by pulling the hose in which the pipe is inserted in the axial direction, the maximum diameter holding state of the clip by the holder is released,
The clip fitted to the end of the hose is configured to be reduced in diameter by elasticity and to tighten the hose.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the accompanying drawings.

FIGS. 1 to 5 show a hose fastening device according to a first embodiment of the present invention. In the hose fastening device according to this embodiment, the holder locking projection 12 has an insertion end. A ring 10 having a pipe 10 formed in a portion 11, a hose 20 having a notch 22 formed in a bulging end protrusion 21, and a notch recess 31 and an insertion protrusion 32 whose opposite ends are inserted and overlapped with each other. A clip 30 formed and urged in the radially-reducing direction, the both ends of the cut recess 31 and the insertion protrusion 32
And a substantially L-shaped holder 35 interposed between the cut-and-raised pieces 33 and 34 formed at the end of the holder 35 and holding the clip 30 at the maximum diameter.

The pipe 10 is formed such that the insertion end 11 is enlarged in diameter.
Is protruded from the surface of the pipe away from the insertion end 11 whose diameter has been increased.

The end of the pipe 20 into which the insertion end 11 of the pipe 11 is inserted has an enlarged diameter and the bulging end projection 21
The notch 22 into which the holder locking projection 12 can be fitted is formed in the bulging end projection 21.

[0010] The clip 30 is formed in a ring shape from a spring steel material formed in a belt shape, and has two opposite ends.
As described above, the cut recess 31 and the insertion protrusion 32 are formed, and the ends of the insertion protrusion 32 and the cut recess 3 are formed.
Cut-and-raised pieces 33 and 34 are protruded from both end portions of the clip 1. The cut-and-raised pieces 33 and 34 are normally urged in the diameter-reducing direction by the clip 30. It is configured to maintain a separated state without collision.

As described above, the holder 35 is formed in a substantially L-shape, and a bent portion 36 at the tip engages with the holder engaging projection 12. Is configured to hold the clip 30 at the maximum diameter.

That is, the stopper piece 37 is inserted between the cut-and-raised pieces 33, 34 in an aligned state in which the cut-and-raised pieces 33, 34 of the clip 30 are pressed in a direction approaching each other to be substantially at the same position. Then, it is configured to maintain the state of the maximum diameter, and is inserted into the hose 20 in this state. Of course, the bent portion 36 is formed to have a width dimension passing through the notch 22 of the hose 20.

Next, a description will be given of a case where the connecting end of the pipe 10 and the hose 20 is tightened by the hose tightening device configured as described above. First, the clip 30 is inserted into the hose 20 in advance.

Next, after inserting the insertion end 11 of the pipe 10 to the inside of the bulging end projection 21 of the hose 20, the clip 30 is moved to the bulging end projection 21 side of the hose 20, and The bent portion 36 of the holder 35 that holds the clip 30 at the maximum diameter is engaged with the holder locking projection 12 of the pipe 10. This state is the state shown in FIGS.

From this state, the hose 20 or the pipe 10
When one or both of them are pulled in the axial direction, the holder 35 is pulled by the holder locking projection 12, so that the alignment of the cut and raised pieces 33, 34 by the holder 35 is released as shown in FIGS. As a result, the clip 30 is tightened in the diameter reducing direction, so that the connection end is tightened by the clip 30.

Since the end of the hose 20 is enlarged in diameter, even if one or both of the hose 20 and the pipe 10 are pulled in the axial direction, the clip 30 is not connected to the hose 2.
Since the clip 30 collides with the bulging end projection 21 and its subsequent movement is restricted, there is no fear that the clip 30 will come off the hose 20 during the same operation.

FIG. 6 shows another embodiment of the holder 35. The holder 35 is cut and raised so as to sandwich the pieces 33 and 34, and the U-shaped part is a stopper piece 37.
Act as

FIGS. 7 to 11 show a second embodiment of the present invention.
5 shows a hose tightening device according to an embodiment, in which the holder 35 used in the first embodiment is abolished and bent outward from the end of the cut recess of the clip 30. The cut-and-raised piece 34A is formed in a substantially inverted concave shape, and one side edge of the cut-and-raised piece 34A is bent at approximately 90 degrees to form an outer locking piece 38, and the cut-and-raised piece 34A is formed. An inner locking piece 39 extending inward from the holder locking one side inner edge of the opening 40 of the clip 34A, and bulging outward from the outer locking piece side edge of the clip 30. Protrusion 41 formed
And is composed of

The inner locking piece 39 has a length that covers approximately half of the opening 40 of the cut-and-raised piece 34A and is bent in a substantially L-shape. In a normal state, the cut-and-raised piece 3 formed at the end of the insertion projection 32
4 to hold the clip 30 at the maximum diameter.

Therefore, in the hose tightening device according to this embodiment, as shown in FIG. 9, the outer locking piece 38 of the cut-and-raised piece 34A is connected to the holder locking projection 12 of the pipe 10. Engage.

From this state, the hose 20 or the pipe 10
10 and FIG. 1 when one or both of them are axially pulled.
As shown in FIG. 1, the convex portion 41 of the clip 30 is pressed rightward in FIG. 10 by the bulging end protrusion 21 of the hose 20, so that the cut and raised piece 34 is Since the clip 30 is moved in the direction of releasing the engagement state with the locking piece 39, as a result, the clip 30 is tightened in the diameter reducing direction, so that the connection end is tightened by the clip 30.

In the present invention, the projection 4 of the clip 30
In place of the first embodiment, as shown in FIG. 12, even if a projection 23 that presses the side edge of the outer locking piece of the clip 30 is formed on the bulging end projection 21 of the hose 20, Needless to say, the same effects as in the embodiment can be obtained.

[0023]

As described above, the hose tightening device according to the present invention reduces the diameter of the clip from the maximum diameter in the tightening direction only by pulling the hose in the axial direction without using a tool or the like. Because the hose is configured to be able to apply a tightening force, it is easy even in a narrow work space, and
The hose can be tightened in a short time, and
Since the clamp mounting angle can be regulated, excellent effects such as reduction in variation can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a hose tightening device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part showing a state in which the clip of the hose tightening device is set while being held at a maximum diameter.

FIG. 3 is a plan view showing a state in which the clip of the hose tightening device is set while being held at a maximum diameter.

FIG. 4 is a sectional view of a main part showing a state in which a clip of the hose tightening device is tightening a connecting portion to a hose and a pipe.

FIG. 5 is a plan view showing a state in which a clip of the hose tightening device is tightening a connection portion to a hose and a pipe.

FIG. 6 is a plan view corresponding to FIG. 3, showing another configuration example of the holder of the hose tightening device.

FIG. 7 is a perspective view showing a configuration of a clip of a hose fastening device according to a second embodiment of the present invention.

FIG. 8 is an enlarged perspective view showing a configuration of a cut and raised piece of the clip.

FIG. 9 is a plan view showing a state in which the clip of the hose tightening device is set while being held at a maximum diameter.

FIG. 10 is a plan view showing a state in which a clip of the hose tightening device is tightening a connection portion to a hose and a pipe.

FIG. 11 is an enlarged sectional view of a main part showing a state of disengagement between the cut-and-raised piece and the inner locking piece just before the clip of the hose tightening device contracts in the radial direction.

FIG. 12 is a perspective view of a main part showing another configuration example of the hose.

FIG. 13 is a perspective view showing a configuration of a conventional hose clip and an example of its use.

DESCRIPTION OF SYMBOLS 10 Pipe 11 Insertion end 12 Holder locking projection 20 Hose 21 Swelling end projection 22 Notch 30 Clip 31 Cut recess 32 Insertion projection 33, 34A, 34 Cut-and-raised piece 35 Holder 39 Inside Locking piece part 40 Opening part 41 Convex part

Claims (1)

[Claims] 1. A pipe having a holder locking projection formed at an insertion end, a hose having a notch formed at a bulging end projection,
Opposite ends are formed in a ring shape having a notch recess and an insertion protrusion that are inserted and overlapped with each other, and are urged in the radially-reduced direction, and an end of the notch recess and an end of the insertion protrusion. And a substantially L-shaped holder portion for holding the clip at the maximum diameter between the cut-and-raised pieces formed in the portion, and the bent portion of the holder portion is formed into a holder locking projection of the pipe. After being locked, the hose into which the pipe is inserted is pulled in the axial direction, thereby releasing the maximum diameter holding state of the clip by the holder, and the clip fitted to the end of the hose is elastically deformed. A hose tightening device characterized by reducing the diameter and tightening a hose.