JPH059585Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a connecting tool that is attached to the outer circumferential surface of the hose connection part with a connecting tool having a tapered bulging head at the tip of the cylindrical part inserted into the hose. The present invention relates to a grip member for a hose connection part that prevents leakage and prevents the hose from coming off, and particularly relates to a grip member for a hose connection part that can be used even in places where the space around the hose connection part is small.

[Conventional technology]

Conventionally, as a means to prevent leakage and to prevent hose connections from coming off, a cylindrical connector has been formed with a bulging head in a tapered shape at the tip, and this connector is press-fitted into the hose end. It is known that the bulging head is connected to the inner surface of the hose by engaging it.

However, in this type of hose connection means,
Because the connector is simply press-fitted into the hose, when the internal pressure at the connection increases, the hose around the connection expands in diameter due to the internal pressure, causing fluid to flow over the tapered surface and between the connector and the hose. There is a risk of leakage.

Therefore, the inventors of the present invention previously proposed in Utility Application No. 60-85297 a grip for a hose connection part that can strongly tighten the hose to the tapered surface and neck of the head of the connection device from both front and back sides using the lever action of the skirt member. Suggested parts.

10 and 11 show a conventional grip member of this type, and in the figures, reference numeral 1 indicates the cylindrical portion 2.
This connector 1 has a tapered bulging head 2b at the tip of the hose 3.
A bulge 4 is formed in a portion corresponding to b, that is, on the outer surface of the hose connection portion.

On the other hand, the grip member 5 attached to the outer side of the hose connection part has a cylindrical body part 5a whose inner peripheral surface forms a tapered surface 6 that abuts the bulge part 4, as shown in FIGS. 10 and 11. and a plurality of skirt members 5b integrally provided on the peripheral edge of the enlarged diameter side of the cylindrical body portion 5a via a thin wall portion 5c, and each skirt member 5b is provided with a slit 7 in between in the inner and outer radial directions. They are designed to be able to swing independently of each other. In addition, a cylindrical sleeve 9 is attached to the outside of the grip member 5 on the inner wall surface of the base of each of these skirt members 5b, as shown in FIGS. 10 and 11, so that when the skirt member 5b is folded inward, , a lateral protrusion 8 abutting against the neck of the bulge 4 is provided, respectively. The protrusion 8 and the tapered surface 6 allow the bulging portion 4 to be strongly tightened from both the front and rear sides.

[Problem that the invention attempts to solve]

In the grip member 5 of the conventional hose connection part having the above configuration, by a simple operation such as folding each skirt member 5b inward, the pressure resistance of the hose connection part can be significantly strengthened by lever action. However, as shown in FIG. 10, when the grip member 5 is attached to the hose connection part, each skirt member 5b is opened around the entire circumference of the hose connection member. Therefore, a space is required around the hose connection portion at least enough to allow each of the radially open skirt members 5b to be folded back inward.

However, there are cases in which another pipe is arranged in a direction perpendicular to the hose 3 directly above the bulging head 2b of the connector 1, and in such cases, the conventional grip member 5 There is a problem that it cannot be attached to the connection part.

In addition, in conventional grip members, the convex part that abuts the tapered surface of the connecting head and the convex part that abuts the head are both integrally formed on the inner peripheral surface of the grip body, so the connecting head It was necessary to use a grip body that matched the shape of the grip, which tended to limit the range of use.

The present invention was developed to solve this problem, and can be easily installed even in places with limited space, and by changing the internal retaining ring, it can be widely used for connection heads of various shapes and sizes. The object of the present invention is to provide a grip member for a hose connection.

[Means for solving problems]

In order to achieve the above object, the grip member of the present invention has a concave groove portion facing the tapered end surface of the bulging head of the connector, and a bulging groove on the inner circumferential surface of the cylindrical body, which is divided into two halves with a cutting line formed in the axial direction. The grip body has a protrusion facing the neck of the protruding head and a plurality of slits from the proximal end to the concave groove. It is equipped with a retaining ring configured to clamp the tapered hose to the connecting tool, and a sleeve that has an inner flange on the edge of the opening at the distal end and is press-fitted and supported on the outside of the grip main body from the opening at the proximal end. It is characterized by

[Effect]

In the grip member of the hose connection portion according to the present invention, at least one circumferential portion of the main body is cut in the axial direction, so that the grip member can be attached to the hose connection portion from the outer surface of the hose. And, in the attached state, it has a cylindrical shape as a whole. Therefore, as long as there is a predetermined space at at least one location around the hose connection part, the main body can be attached to the hose connection part. In addition, a pair of front and rear protrusions are formed on the inner circumferential surface of the main body to tighten the tapered end surface and neck of the bulging head of the hose connector. Tighten on both sides of the tapered surface of the tip and the neck.

In addition, the retaining ring that presses against the tapered surface of the tip is
It is a separate member that can be attached to and removed from the grip body and can be replaced.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the grip member of the hose connection part according to the present invention, and in the figure, reference numeral 1 indicates the cylindrical part 2.
This connector 1 has a tapered bulging head 2b at the tip of the hose 3, and this connector 1 is inserted under pressure into the hose connection part at the end of the hose 3, so that it bulges out on the outside of the hose connection part. A portion 4 is formed. As shown in FIG. 1, a grip member 11 is attached to the outer surface of this hose connection part together with a retaining ring 12 and a sleeve 13 to prevent leakage from the hose connection part and to prevent the hose from leaking.
It is designed to prevent it from coming off.

The grip member 11 has two cutting lines 14 in the axial direction, as shown in FIGS. 2 to 5.
The main body 15 has a cylindrical shape divided into two halves, an upper half-cylindrical part 15a and a lower half-cylindrical part 15b. By being pressed into contact with the body, the body becomes cylindrical as a whole in the installed state.

As shown in FIGS. 2 to 5, each half-cylindrical portion 15a, 15b is provided with a plurality of slits 16 that cut in the axial direction from the proximal end to the distal end at equal intervals in the circumferential direction, and Each half cylinder part 15a, 1
The proximal outer peripheral portion of 5b has a tapered surface 17 whose diameter gradually increases from the distal end toward the proximal end, as shown in FIG.
is doing.

On the other hand, as shown in FIG. 1, FIG. 2, and FIG.
A protrusion 18 having a generally trapezoidal cross section is provided, which presses the inner surface of the hose 3 against the neck of the bulging head 2b by attaching the main body 15 to the hose connection portion and pressing it from the outer circumference side.

As shown in FIGS. 1, 2, and 4, the inner circumferential surfaces of each of the half-cylindrical portions 15a, 15b are provided with:
A retaining ring 1 attached to the outer surface of the hose 3 to press the inner circumferential surface of the hose 3 to the bulged head 2b.
By holding the retaining ring 12 in this concave groove 19, the main body 15 and the retaining ring 12 are connected, and the bulging portion 4 of the hose 3 is inserted into the protrusion. 18 and a retaining ring 12, it can be tightened from both the front and rear sides.

As shown in FIGS. 1 and 6, the retaining ring 12 is formed into a ring shape having a tapered hole 12a in a portion of the inner circumferential surface facing the bulged head 2b. Hose 3 in advance
By inserting the connector 1 into the hose connection part under pressure and then sliding the retaining ring 12 toward the connector 1 side, the hose 3 is connected to the tapered surface of the bulging head 2b and the tapered hole of the retaining ring 12. Part 1
2a, so that the inner circumferential surface of the hose 3 comes into close contact with the bulging head 2b. As a result, even if the internal pressure increases, it is possible to prevent the hose 3 from expanding in diameter at the hose connection portion.

On the other hand, the sleeve 13 attached to the outer surface of the grip member 11 has an inner flange portion 13a at its tip and a bent portion 13b whose diameter expands into a flap shape at its base end, as shown in FIGS. 7 and 8. It is formed into a cylindrical shape, and its inner diameter is set to be slightly larger than the outer diameter of the main body 15 and smaller than the tapered surface 17. As shown in FIG. 1, this sleeve 13 is made into a two-split shape by holding the retaining ring 12 in the main body 15 and then sliding it to the left in the figure and attaching it to the outer surface of the grip member 11. While the main body 15 is held in a cylindrical shape, the tapered surface 17 is pressed from the outside by the inner peripheral surface of the sleeve 13, the protrusion 18 bites into the hose 3, and the inner peripheral surface is pressed against the neck of the bulging head 2b. It is becoming more and more common. Further, the bent portion 13b of the sleeve 13 is provided with a plurality of notches 20 at intervals in the circumferential direction as shown in FIGS. It is designed so that the bent portion 13b can be easily bent inward after being attached to the outer surface of the holder. Note that since the sleeve 13 is used as a fastener, instead of this,
Bands or similar means can be used.

Next, the operation of this embodiment will be explained.

In use, first, before press-fitting the connecting tool 1 into the hose 3, the sleeve 13 and the stop ring 12 are sequentially attached to the hose 3, and in this state, the connecting tool 1 is press-fitted into the hose connection part. Then, a bulge 4 is formed in the hose connection portion at a portion corresponding to the bulge head 2b.

Next, the retaining ring 12 is slid along the hose 3 toward the bulged head 2b of the connector 1, that is, from the right to the left in FIG. 1, until it stops. Then, as shown in FIG.
The inner circumferential surface of the bulging head 2b is in close contact with the outer circumferential surface of the bulging head 2b. Thereby, even if the pressure of the fluid flowing inside the hose 3 becomes high, the diameter expansion of the hose 3 at the hose connection portion is prevented.

Next, the upper half cylindrical portion 15a and the lower half cylindrical portion 15b of the split grip member 11 are inserted into the concave groove 1.
The retaining ring 12 is held in the inside of the hose 3 and comes into contact with the hose connection part from the outside surface of the hose 3 separately. At this time, for example, if a pipe is arranged immediately above the hose connection part, avoid the position of this pipe and attach each half-cylindrical part 15a, 15b to the outer surface of the hose connection part, and then attach the hose 3 to the outer surface of the hose connection part. By moving the half cylinders 15a, 15b along the outer surface to the position of the pipe, the grip member 11 can be attached to the outer surface of the hose connection portion without any problem.

Once the grip member 11 is attached in this manner, the sleeve 13 is moved from the right to the left in FIG. 1 and attached to the outer surface of the grip member 11.
Then, the halved upper half-tubular section 15a and the lower half-tubular section 15b are substantially integrated into a cylindrical shape, and the tapered surface 17 at the base end of the grip member 17 is connected to the sleeve 1.
3, and the protrusion 18 bites into the hose 3 as shown in FIG. As a result, the inner circumferential surface of the hose 3 is brought into pressure contact with the neck of the bulging head 2b, thereby preventing leakage from this portion and preventing the hose 3 from coming off.

Next, the bent portion 13b of the sleeve 13 is bent inward as shown in FIG.
from the grip member 11.

Therefore, the grip member 11 is attached to the upper half cylinder portion 15a.
Since the grip member 11 is formed into two halves from the lower half cylinder part 15b, even if there is an obstacle around the hose connection part, the grip member 11 can be attached while avoiding the obstacle.

In addition, in the embodiment, the upper half cylinder part 15a
Although the case where the upper half cylinder part 15b and the lower half cylinder part 15b are completely separated has been described, as shown in FIG. 9, the upper half cylinder part 1
5a and the lower half-cylindrical portion 15b may be connected via the thin-walled portion 21, and the grip member 11 may be formed into a cylindrical shape that can be opened and closed.

Further, in the embodiment described above, the case where the grip member 11 is divided into two parts has been described, but it may be divided into three or more parts. In this case, the divided parts may be connected to each other via thin-walled parts as shown in FIG. 9.

Further, in the embodiment described above, the grip member 11 and the stop ring 12 are formed as separate members, but they may be formed into an integral structure.
In this case, the retaining ring 12 is no longer cylindrical like the grip member 11, but it becomes substantially cylindrical when the sleeve 13 is attached, so there is no major problem.

[Effect of idea]

As explained above, the present invention has a structure in which the grip member can be attached to the hose connection part from the outside surface of the hose.
Can be attached to the hose connection. In addition, a pair of front and rear protrusions are formed on the inner peripheral surface of the grip body to tighten the neck and the tapered surface at the tip of the bulging head of the connection part, which improves the pressure resistance of the hose connection part. In addition, the protrusion on the tapered surface side is composed of a retaining ring that is removable from the main body, so by replacing the retaining ring with a retaining ring of different shapes and dimensions, it can be used in a wide range of bulging heads of various sizes and shapes. In addition, it is economical because only the retaining ring needs to be replaced when it wears out.

[Brief explanation of the drawing]

1 is a sectional view showing a grip member of a hose connection part according to an embodiment of the present invention, FIG. 2 is a sectional view of the grip member, FIG. 3 is a left side view of FIG. 2, and FIG.
The figure is a - line enlarged sectional view of Figure 3, and Figure 5 is an enlarged cross-sectional view of Figure 3.
FIG. 6 is a sectional view of the retaining ring, FIG. 7 is a sectional view of the sleeve, FIG. 8 is a left side view of FIG. 7, and FIG. 9 shows another embodiment of the present invention. A view corresponding to FIG. 3, FIG. 10, and FIG. 11 are explanatory views showing the grip members of the conventional hose connection portion, respectively. DESCRIPTION OF SYMBOLS 1...Connection tool, 2a...Cylinder part, 2b...Bulging head, 3...Hose, 4...Bulging part, 11...Grip member, 12...Retaining ring, 13...Sleeve, 14... ... Cutting line, 15 ... Main body, 16 ... Slit, 17 ... Tapered surface, 18 ... Protrusion, 19
...Concave groove part, 21...Thin wall part.

Claims (1)

[Claims for Utility Model Registration] (1) In a grip member that presses and engages a hose to the outer circumferential surface of a connector having a bulging head at its tip, the inner circumferential surface of a two-split cylinder with a cutting line formed in the axial direction. A concave groove facing the tapered end surface of the bulging head of the connector and a protrusion facing the neck of the bulging head are formed, and a plurality of slits extending from the proximal end of the cylindrical body to the concave groove are provided. a grip body; a retaining ring fitted into the concave groove of the clip body so that the hose on the tapered surface of the bulging head is compressed by the grip body; A grip member for a hose connector, comprising: a sleeve that is press-fitted and supported on the outside of the grip main body from the proximal opening side. (2) The grip member according to claim 1, wherein the outer periphery of the proximal end of the cylindrical body of the grip main body is formed into a tapered surface that expands in diameter outward. (3) The grip member according to claim 1 or 2 of the utility model registration, characterized in that the proximal opening edge of the sleeve is formed with a bent portion that expands in diameter in a flap-like manner.