JPS633508Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a hose fixture.

Conventionally, hose fixing devices shown in FIGS. 1 to 3 have been used as fixing devices for a hose and a tubular body such as a pipe.

In the example shown in FIG. 1, a hose 2 is inserted into a clamp 1, and the clamp 1 is fixed to the hose 2.
The hose 2 is fixed to the tubular body 3 such as a pipe by biting into the tubular body 3.
is configured so that it does not come off from the tube body 3.

However, this conventional example can only be used when the tube body 3 protrudes in a short length from the outer surface of the attachment part 4, and the outer surface of the attachment part 4 is connected to the clamp 1. It must be adapted to function as a stopper surface. Therefore, not only the location of use can be specified, but also the structure of this type of clamp 1 makes it possible to
There was a problem in that the hose itself protruded to the outside of the hose 2, resulting in an increase in size.

In addition, in the case shown in FIG. 2, a bulge 3a is provided at the tip of a pipe body 3 such as a nipple, and after inserting this tip into the hose 2, the outer circumference of the hose 2 between the open end of the hose 2 and the bulge 3a is inserted. By tightening the clamp 5, the clamp 5 and the hose 2 are prevented from climbing over the bulge 3a and coming off. However, this type of clamp 5 has fixing devices 7, 7 attached to both ends of two wire rods 6, 6, respectively, as shown in the figure.
With the fasteners 7, 7 butted against each other, tightening screws 8 are tightened to bring the fasteners 7, 7 closer together, thereby tightening the outer periphery of the hose 2 with the wire rods 6, 6. It is configured. In this way, since the fixing devices 7, 7 are attached to the outside of the hose 2, they not only get in the way of other members, but also take time and effort to tighten the screws 8. 3a has to be formed, which has various disadvantages in that a manufacturing process is required.

In addition, in the case shown in FIG. 3, a bulge 3a is formed at the tip of the pipe body 3 such as a nipple as in FIG. By tightening the hose 2 and the clamp 9, the hose 2 and the clamp 9 are prevented from climbing over the bulge 3a and coming off.

However, the clamp 9 shown in FIG.
As shown in the figure, the spring material is formed into a band shape, and the outer periphery of the hose 2 is tightened by the spring force acting in the direction of diameter reduction. Therefore, when attaching the clamp 9 to the hose 2, the hose 2 must be inserted little by little while loosening the clamp 9, which is a time-consuming process. Therefore, in order to make the attachment work easier, it is possible to weaken the spring force of the clamp 9, but this has the disadvantage that the tightening force of the clamp 9 will be weakened.

The present invention was developed in view of these circumstances, and does not require a stopper surface for contacting the fixing device as in the conventional example described above when connecting and fixing the hose and the pipe body. In addition, since the fixture itself is inserted into the hose and the pipe body and is not installed externally, it does not occupy the installation space, which is advantageous in terms of space saving. There is no need to tighten screws when connecting or fixing connections, reducing manufacturing and assembly man-hours.
Moreover, it is an object of the present invention to provide a hose fixing device that can be fixed simply by inserting a tube into the hose without loosening the spring of the fixing device and connecting it as in the conventional example, and which has good workability when fixing. It is said that

In order to achieve the above object, the hose fixing device according to the present invention includes a pair of opposing flexible pieces that are formed in a V-shape and are provided with a spring force that rebounds in the expansion direction with the flexible part as a fulcrum; The bending piece is formed by bending each end of the bending piece at an acute angle on the outside of the bending piece in the anti-removal direction of the hose, and the distance between each end is larger than the inner diameter of the hose to be connected. a hose locking piece that expands due to the repulsive spring force of the flexible piece when the piece is inserted into the hose and is locked to the inner peripheral surface of the hose; A portion to be inserted into the tubular body is cut out and bent inward, and when the tubular body is inserted into the hose, the flexible piece is bent inward against the repulsive spring force via the hose locking piece. In particular, it is configured to include a tube locking piece that is locked to the inner circumferential surface of the tube.

In this configuration, in order to connect and fix the hose and the pipe body, insert the flexible piece into the pipe body from the flexible part side, and expose the hose locking piece formed at the end of the flexible piece from the end surface of the pipe body. In this state, insert the hose locking piece and the pipe body into the hose while bending the flexible piece inward against the repulsive force in the expansion direction via the hose locking piece on the inner peripheral surface of the hose. do. When the insertion of the tubular body into the hose is completed, the flexible piece is bent inward on the inner peripheral surface of the hose, and its repulsive force applies force in the expansion direction to the hose locking piece. is locked to the inner circumferential surface of the hose, while the flexible piece is bent inward at the inner circumferential surface of the hose as described above, so that the locking piece for the tube is bent by this deflected distance. A hose that integrally includes a hose locking piece and a tube body locking piece that move in the direction of the opposing inner peripheral surface of the tube and are locked on the inner peripheral surface of the tube, and that are locked on the hose side. The hose and the pipe body are fixed by the fixture.

In addition, in order to release the connection and fixation between the hose and the pipe body that have been connected and fixed with the hose fixing device as described above, the hose locking tool is removed by strongly pulling the hose and the pipe body in the detachment direction. While deforming the piece in the detachment direction and releasing the locking of the hose locking piece to the inner circumferential surface of the hose, the inner surface resisting the repulsive force of the flexible piece is released by releasing the locking of the hose locking piece. The bending in the direction is eliminated, the locking of the tube locking piece to the inner circumferential surface of the tube is released, and as a result, the connection and fixation between the hose and the tube can be released.

The present invention will be explained in detail below with reference to the drawings.

6 to 10 show an embodiment of the present invention, FIG. 6 is a perspective view of the hose fixture, FIG. 7 is a plan view of the hose fixture, and FIG. 8 is an expanded view of the hose fixture. Figure 9 is a vertical sectional view of the hose fixture installed at the open end of a tube body such as a nipple or pipe, with the flexible part of the hose fixture being dropped into the open end of a tube body such as a nipple or pipe; The figure is a longitudinal cross-sectional view of a state in which a hose and a tube such as a nipple are connected via a hose fixture.

In these figures, reference numeral 11 is a hose fixture, and this hose fixture 11 has a flexible piece 12,
Hose locking piece 13 formed on this flexible piece 12
and a tube locking piece 14, which are integrally formed of sheet metal as shown in FIG.

The bending piece 12 is bent into a substantially V-shape to form a bending portion 12a, and is applied with a spring force to rebound in the direction of expansion.

The hose locking pieces 13, 13 are formed at both ends of the flexible piece 12.
It is formed by folding both ends of the flexible pieces 12, 12 at an acute angle in the direction opposite to the detachment direction of the hose 15 when the flexible pieces 12, 12 are connected.

Further, the tubular body locking piece 14 is integrally formed by notching both sides of the flexible piece 12, and both tube body locking pieces 14, 14 are formed on the opposing surface 1 of the flexible piece 12.
It is formed to stand up so as to flip up toward 2b and 12b. The tube locking pieces 14 are pressed against and locked against the inner peripheral surface of the tube 16 when the hose 15 is inserted and the flexible piece 12 is pushed back inward to close.

In order to connect the hose 15 and the pipe body 16 such as a nipple using the hose fixture 11 configured in this way, first, as shown in FIG. Drop into the opening 16a and attach the hose locking pieces 13, 13 to the pipe body 1.
The hose fixture 11 is disposed at the end of the opening 16a of the tube body 16 so as to be pulled against the end edge of the tube body 16. After that, when the end side of the opening 16a of the pipe body 16 in this state is inserted into the hose 15, the hose locking pieces 13, 13 are pushed inward by the inner peripheral surface of the hose 15, as shown in FIG. The tips of the hose locking pieces 13, 13 bite into the inner circumferential surface of the hose 15 due to the repulsive force of the flexible piece 12 in the expansion direction that is generated at the same time. Further, when the hose locking pieces 13, 13 are pushed back inward by the inner peripheral surface of the hose 15 to close the flexible piece 12, the tube body locking pieces 14, 14 close the tube body 16 as shown by the arrows. is pressed against the inner circumferential surface of the tube body 16, and its tip end is locked to the inner circumferential surface of the tube body 16. Thereby, the hose 15 and the pipe body 16 are connected via the hose fixture 11.

In addition, in order to release the fixed connection between the hose 15 and the tube body 16, strongly pull the hose 15 and the tube body 16 in the detachment direction, and pull the hose locking pieces 13, 13 of the hose fixture 11 in the detachment direction. This is done by transforming the

As explained above, according to the present invention, there is no need for a stopper surface when connecting and fixing the hose and the pipe body, so the place of use is not limited, and the fixing device is stored in the hose and the pipe body. Since it is connected and fixed, it has the effect of saving space for installation. Furthermore, it is not necessary to process bulges on the pipe body or tighten screws when connecting and fixing, which reduces manufacturing and assembly man-hours.Moreover, unlike the conventional example mentioned above, there is no need to loosen the spring of the fixture to connect. The hose can be fixed by inserting the tubular body into the hose, and has the advantage of good workability during fixation.

[Brief explanation of the drawing]

1 to 5 show conventional examples, FIG. 1 is a side view showing the first conventional example, FIG. 2 is a vertical sectional view showing the second conventional example, and FIG. 3 is a third conventional example. FIGS. 4 and 5 are perspective views showing the clamp in FIG. 3, FIGS. 6 to 10 show an embodiment of the present invention, and FIG. 6 shows a hose Figure 7 is a perspective view of the fixture, Figure 7 is a plan view of the hose fixture, Figure 8 is an exploded view of the hose fixture, and Figure 9 shows how to insert the flexible part of the hose fixture into the open end of a pipe such as a nipple or pipe. FIG. 1 is a vertical sectional view of the hose fixing device disposed at the open end of the pipe body in a manner such that it can be dropped;
FIG. 0 is a longitudinal cross-sectional view of a state in which a hose and a pipe body are connected via a hose fixture. 11... Hose fixture, 12... Flexible piece, 13
...Hose locking piece, 14...Pipe body locking piece, 1
5...Hose, 16...Pipe body.

Claims (1)

[Scope of utility model registration request] A hose fixing device that connects and fixes a hose and a tube body when the tube body is inserted into the hose is formed in a V shape and is provided with a spring force that rebounds in the expansion direction using a flexible portion as a fulcrum. A pair of bending pieces facing each other, each end of the pair of bending pieces being bent at an acute angle in the direction opposite to the removal of the hose on the outside of the bending piece, and the distance between each end being A hose locking piece that has a diameter larger than the inner diameter of the hose to be connected, and when the flexible piece is inserted into the hose, the flexible piece expands due to a repulsive spring force and is locked to the inner peripheral surface of the hose. Then, a portion of the pair of flexible pieces that is inserted into the tube is cut out and bent outward of the other flexible piece, so that when the tube body is inserted into the hose, the hose locking piece is formed. 1. A hose fixing device comprising a tube locking piece that is locked to the inner peripheral surface of the tube by bending the flexible piece inward against a repulsive spring force.