JPS6225591Y2 - - Google Patents

Description

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

As this kind of hose fixing device,
The one described in Publication No. 40016 is known. In the prior art example, a locking member is provided on a joint body having a through hole in the center, and the upper piece of the locking member having the through hole is made to have a slight angle with respect to the upper end surface of the joint body. The upper piece of the locking member is inserted into the through hole of the joint body through the passage hole while pressing the upper piece of the locking member against the upper end surface of the joint body, and when the upper piece is returned in this state, the passage of the upper piece is removed. The peripheral edge of the hole is configured to bite into the outer periphery of the hose and be fixed.

However, in the prior art, the hose is fixed to the joint body by biting in by the edge of the opening and closing periphery of the hole in the upper piece, so the hose is fixed by touching and separating the upper piece from the joint body. There are some disadvantages when moving in the axial direction.
Further, as other conventional examples of hose fixing devices, those shown in FIGS. 1 to 3 are known.

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 tubular body 3 is protruded 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 stopper of the clamp 1. It must be adapted to function as a surface. For this reason, not only the location where it is used is specified, but also the structure of this type of clamp 1 has the problem that the clamp 1 itself protrudes outside the hose 2 and becomes larger.

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, and there is a bulge 3a at the tip of the tube 3. This has had various disadvantages in that it requires a manufacturing process.

In addition, in the case shown in FIG. 3, a bulge 3a is formed at the tip of a 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. For this reason, it is conceivable to weaken the spring force of the clamp 9 in order to make the attachment work easier, 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 there is no possibility that the hose connected and fixed to the pipe body will move in the axial direction at the fixed part, and there is no need for a stopper for contacting the fixture when the hose is connected and fixed. There are no restrictions on where it can be used, and there is no need to process bulges on the pipe body or tighten screws when connecting and fixing, reducing manufacturing and assembly man-hours.Moreover, the spring force of the fixing device can be loosened. The purpose of the present invention is to provide a hose fixing device that does not need to be connected and has good workability during connection.

In order to achieve the above object, the hose fixing device according to the present invention is a hose fixing device that inserts a tube body into a hose and fixes the hose and the tube body. It is formed into a cylindrical shape with a hose insertion port and a hose exit port,
In addition, a hose attachment part is provided with elastic force in the inner radial direction, and a protruding pawl is formed on the inner circumferential side of the hose attachment part and is oriented obliquely downward in the insertion direction of the hose to prevent the hose from coming off. , a pair of connecting pieces that are attached facing each other at opposite positions on the outer circumferential side of the hose fitting part, and a pair of connecting pieces that are connected to the pair of connecting pieces and are attached on both sides on the hose outlet side of the hose fitting part. a tube body fixing portion consisting of a pair of tube body locking pieces which are disposed in sliding contact with each other so as to cross the hose projection port and are applied with a biasing force in the direction of opening to both sides; The tube body locking pieces are formed on the pair of tube body locking pieces so as to be eccentric to the sides, off the axis of the hose attachment part, and when the tube body locking pieces are brought close to each other against the biasing force, they overlap and become true. It is configured to include a circular tube insertion hole and an edge formed on the inner periphery of the tube insertion hole.

With this configuration, in order to connect and fix the hose and the tubular body, the hose is inserted through the hose insertion port of the hose attachment portion, and its distal end portion is slightly protruded from the hose outlet. This will cause the claws to bite into the outer circumference of the hose, preventing the hose from coming off. In this state, the tube body locking pieces are pressed against each other against the urging force to make the insertion hole into a perfect circle, and then the tip of the tube body is inserted into the hose through this insertion hole, and then the When the pressure is released, the tube body locking pieces are forcefully opened to both sides, the insertion hole is eccentric again, and the edge of the inner circumference is locked to the outer circumference of the tube body.

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

6 to 10 are examples of the present invention,
Figure 6 is a perspective view of the hose fixture, Figure 7 is a vertical sectional view of the hose inserted into the hose fixture of Figure 6, Figure 8 is a plan view of the hose fixture of Figure 7, and Figure 9 is a perspective view of the hose fixture of Figure 6. The figure is a longitudinal cross-sectional view when the tube body is inserted into the hose fixture shown in FIG. 7, and FIG. 10 is a longitudinal cross-sectional view of the hose and the tube body in a state where they are connected.

In these figures, reference numeral 11 denotes a hose fixture, and this hose fixture 11 is connected to a hose attachment part 13 into which the hose 12 is inserted and attached, and is connected to this hose attachment part 13, and A nipple inserted into the hose 12 inserted into the attachment part 13 and a tube body fixing part 15 that locks and fixes the tube body 14 such as a pipe are integrally molded from a material having a spring action such as sheet metal or plastic. The hose 12 is connected to a pipe body 14 such as a nipple through the hose attachment part 13 and the pipe body fixing part 15.

The hose attachment portion 13 has a hose insertion opening 1 in which the distal end of the hose 12 is inserted and the outer periphery thereof is attached.
3a and a hose outlet 13b, and a slit 19 is formed in the side wall thereof from the hose insertion port 13a to the hose outlet 13b to impart resiliency. This hose attachment part 1
No. 3 hose insertion port 13a end and hose protrusion port 13
At the b end, hooking claws 18, 18, 18 protrude obliquely downward in the insertion direction of the hose 12 so as to prevent the inserted hose 12 from coming off. This hooking claw 18 has both openings 13a, 13
b It may be formed in a sawtooth shape so as to go around the inner periphery, or it may be formed intermittently. Note that it is formed by punching to form it at the center of the inner surface.

A tube body fixing portion 15 for locking and fixing a tube body 14 such as a nipple inserted into the hose 12 is connected to an end portion of the hose insertion port 13a of the hose attachment portion 13.

This tube body fixing part 15 is attached to the opposite position of the hose attachment part 13 so as to face each other.
It is composed of a pair of letter-shaped connecting pieces 20, 20 and a pair of tube locking pieces 21, 21. This connecting piece 20 is connected to the hose fitting part 13 so as to project obliquely outward from the hose insertion port 13a side of the hose fitting part 13 along the axis S of the hose fitting part 13. When this connecting piece 20 is pressed from the outside toward the hose attachment section 13, a repulsive force is generated outward perpendicular to the axis S of the hose attachment section 13.

Further, the two pipe body locking pieces 21, 21 are formed in a flat plate shape and are connected to the two connecting pieces 20, 20, and are arranged on the hose protrusion port 13b side of the hose attachment part 13. , are disposed across the axis S of the hose attachment portion 13 from both sides, and their opposing surfaces are in sliding contact so as to overlap with each other.

These tube body locking pieces 21, 21 have tube body insertion holes 22, 22 through which the tube body 14, such as a nipple, is inserted at positions offset from the axis S of the hose attachment portion 13 and eccentric to the respective sides. is drilled. These two tube body insertion holes 22, 22 are formed by pressing the connecting pieces 20, 20 toward the hose attachment portion 13 side, and forming the two tube body locking pieces 21, 2.
When they are brought close to each other, they overlap to form a perfectly circular tube insertion passage 23 as shown in FIG. Therefore, when the pressing force on the connecting pieces 20, 20 is released, the repulsive force of the connecting pieces 20, 20 causes the tube locking pieces 21, 21 to move through the tube insertion passage 23. As a result of the opening and retraction to both sides, the space becomes narrower as shown in FIGS. 7 and 8.

The tube body insertion holes 22, 22 of the two tube body locking pieces 21, 21 are formed with edges 24, 24 for pressing the outer periphery of the tube body 14. The edges 24, 24 are formed by tapering the inner circumferential surfaces of the tube body insertion holes 22, 2 so that the inner diameter of the tube body insertion passage 23 gradually decreases in size in the direction in which the tube body 14 is inserted. By doing so, both tube body insertion holes 2
2 and 22 in a circumferential manner toward the inside in the radial direction.

In order to connect the hose 12 and the pipe body 14 such as a nipple using the hose fixture 11 configured as described above, the tip of the hose 12 is connected to the hose attachment part 1.
No. 3, the hose is inserted through the hose insertion port 13a, and its tip is slightly protruded from the hose projection port 13b.

At this time, the diameter of the hose attachment part 13 is
If the width of the slit 19 is narrowed in advance so that the diameter is smaller than the outer diameter of the hose 12, the plurality of catching claws 18, 18 provided in the hose insertion port 13a can be removed by inserting the hose 12 as described above. , 18 is hose 1
2 and prevents the hose 12 from coming off. Thereafter, the connecting pieces 20, 20 are pressed inward as shown by the arrows in FIG. A tubular body insertion passage 23 having a shape is formed. After that, this tube body insertion passage 23
While being guided by the tapered inner peripheral surface of the tube body 14
is passed through the tube insertion passage 23, and the tip of the tube 14 is inserted into the hose 12. Then, if the pressing force pressing the connecting pieces 20, 20 inward is released, the connecting pieces 20, 20
Due to the repulsive force of the tube body locking pieces 21, 21 are retracted so as to open to both sides, and the tube body insertion passage 23
At the same time, the tube body insertion holes 22, 22 become narrower.
Edges 24, 24 formed on the inner periphery of the tube body 1
The outer periphery of 4 will be locked. Thereby, the hose 12 is connected to the pipe body 14 such as a nipple via the hose fixture 11.

In addition, the tube body insertion hole 22 in the above-mentioned embodiment,
The edges 24, 24 formed on the inner periphery of the holes 22, 22 may be formed in the shape of a saw blade on the inner periphery of the holes 22, 22,
Alternatively, it may be formed intermittently. Alternatively, one of the tube locking pieces 21, 21 may be fixed, and only the other may be moved to approach it.

As explained above, according to the present invention, there is no possibility that the hose connected and fixed to the pipe body will move in the axial direction at the fixed part, and there is no need for a stopper for abutting the fixing device when the hose is connected and fixed, and the place of use can be reduced. In addition, it is not necessary to process bulges on the pipe body or tighten screws when connecting and fixing, reducing manufacturing and assembly man-hours.Moreover, it is possible to connect by loosening the spring force of the fixing tool. This is not necessary and has the effect of improving workability during connection.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the first conventional example, Fig. 2 is a vertical sectional view showing the second conventional example, Fig. 3 is a side view showing the third conventional example, Figs. 4 and 5. 6 is a perspective view showing a third conventional hose fixture, FIGS. 6 to 10 show an embodiment of the present invention, FIG. 6 is a perspective view of the hose fixture, and FIG. 7 is a perspective view of the hose fixture. Figure 6 is a vertical cross-sectional view when the hose is inserted into the hose fixture shown in Figure 6, Figure 8 is a plan view of the hose fixture shown in Figure 7, and Figure 9 is a diagram when the tube body is inserted into the hose fixture shown in Figure 7. FIG. 10 is a longitudinal sectional view when the hose and the pipe body are connected. 11...Hose fixture, 12...Hose, 13
... Hose attachment part, 14 ... Pipe body, 18 ... Catch claw, 23 ... Pipe body insertion passage.

Claims (1)

[Scope of utility model registration request] A hose fixture that inserts a tubular body into a hose and fixes the hose and the tubular body, which is formed into a cylindrical shape with a hose insertion port and a hose protrusion port so that the tip of the hose can be inserted and coated on the outer periphery of the hose. a hose-attached portion to which elastic force is applied in the inner radial direction;
A protruding claw is formed on the inner circumferential side of the hose attachment part and is oriented diagonally downward in the insertion direction of the hose to prevent the hose from coming off, and a claw is formed on the outer circumference of the hose attachment part at opposing positions. a pair of connecting pieces attached together; and a pair of connecting pieces that are connected to the pair of connecting pieces and are arranged in sliding contact with each other so as to cross the hose outlet from both sides on the hose outlet side of the hose attachment part and overlap each other. and a pair of tube locking pieces to which a biasing force is applied in the direction of opening to both sides. A tube body insertion hole that is formed eccentrically to the side and that overlaps and becomes a perfect circle when the tube body locking pieces are brought close to each other against a biasing force; A hose fixture characterized by comprising an edge formed on the inner circumference.