JPH04224393A - Connector for piping - Google Patents

Abstract

PURPOSE:To provide the miniaturization of a connector by arranging so that a conduit may be inserted into a joint main body by putting a socket body into an opened state, and the socket body may be closed as soon as an annular bulging out wall together with an annular sleeve passes through the inside of the socket body, and the conduit may be retained in the joint main body. CONSTITUTION:At this piping connector, a sleeve 10 is engaged beforehand inside a suspension-stop portion 11b of a socket body 11, and the socket body 11 is assembled beforehand in a state in which the body 11 is opened to about the same diameter as that of a conduit 1 annular bulging out wall 2. In this state, when the conduit 1 is inserted into a joint main body 3, the sleeve 10 is moved axially by being pushed by the wall 2, and when the wall 2 has passed the inside of the body 11, the body 11 is closed, and it is constituted so that the conduit 1 may be retained in the main body 3 in co-movement with the conduit annular bulging out wall 2. The body 11 made of an elastic material such as resin, is fitted with three suspension-stop portions 11b which protrude from almost C shaped arm portions 11a in the inner diameter direction and hold pinchingly the conduit 1, and furnishing is done by inserting portions 11b from a cutout window 7.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention generally relates to a metal pipe having a relatively small diameter of about 20 m/m or less, which is installed as a supply path for oil and air in automobiles or various machines and devices. The present invention relates to a connector for connecting a pipe, more specifically a resin tube (hereinafter referred to as a conduit).

0002

2. Description of the Related Art Conventionally, as shown in Japanese Patent Publication No. 64-10711, this type of piping connector has conventionally been constructed by inserting a holding element into a housing (joint body), and then as the conduit is inserted, the annular surface of the conduit The barbed ends of the retaining element are pushed outward to allow the insertion of the conduit, and when the barbed ends pass through the annular surface means, the barbed ends are returned inward to their original position to allow the conduit to latch. It is configured to come into contact with the stop wall and prevent the conduit from coming out.

0003

[Problems to be Solved by the Invention] However, in the conventional piping connector, in order to obtain a snap action of the elastic claws of the holder when inserting the conduit, the diameter of the holder is smaller than the diameter of the conduit. Since it is necessary to be large and has a long length, there is a problem that the entire joint becomes large and it is inappropriate to install it in a small place.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a piping connector that can be reduced in diameter and overall length and is convenient for installation.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the piping connector of the present invention includes a conduit having an annular bulging wall near the end, a joint body, one end receiving the conduit, and the other end receiving the conduit. In a connector consisting of a sealing means installed in the joint body having a communicating axial flow hole, a sleeve attached to the rear end, and a holding means assembled to the joint body, the sleeve has a certain length and is attached to the joint body within the joint body. It is housed in the tube, is slidable in the axial direction on the conduit, and has an outer diameter slightly larger than the diameter of the annular bulging wall. On the other hand, the holding means has a socket body consisting of a substantially C-shaped arm part made of an elastic body and a plurality of hook parts that protrude in the inner diameter direction of this arm part and hold the conduit, in a notch window of the joint body. Before inserting the conduit, the sleeve is engaged in the latching part of the socket body, and the socket body is assembled in an open state, and when the conduit is inserted, the bulging wall is inserted together with the sleeve. It is configured to close the socket body by moving in the axial direction within the socket body.

[0006] The arm part and the hook part of the socket body are formed by bending a spring wire, and the sleeve is a stepped sleeve having an enlarged diameter part in which the annular bulging wall can be accommodated at the rear end. A tapered portion may be provided on the outer periphery between the enlarged diameter portion and the small diameter portion, and an engagement groove in which the hooking member of the socket body is engaged may be provided at the base of the tapered portion.

Furthermore, between the annular bulging wall on the conduit and a stopper provided near the end, a spacer having an enlarged diameter portion for accommodating the annular bulging wall and a seal ring following the spacer are fixed, and the sleeve is fixed. The sleeve is slid over the small diameter part of the spacer, and the outer diameter is configured to be equal to the enlarged diameter part of the spacer, and the sleeve is first engaged in the latch part of the socket body before insertion of the conduit, and by insertion of the conduit, the sleeve is When pushed by the enlarged diameter part of the spacer and moved axially within the socket, the socket body moves from the sleeve to the enlarged diameter part of the spacer, disengages from the socket body and closes, collaborating with the annular bulging wall of the conduit. The conduit may be held in the fitting body by holding the conduit in the fitting body.

[0008]

[Operation] Since the present invention is constructed as described above, before assembling the conduit to the joint body, first, the sleeve is engaged in the latching portion of the socket body to open the socket body. When the conduit is inserted into the fitting body, the annular bulge wall is inserted while pushing against the sleeve. When the annular bulging wall passes through the socket body together with the sleeve, it is disengaged from the socket body and the socket body is closed, thus retaining the conduit within the joint body.

[0009]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings.

FIG. 1 is an assembled state diagram showing an embodiment of the piping connector of the present invention, and FIG. 2 is a view taken along the line BB in FIG. 2, FIG. FIG. 3 is a sectional view of main parts during assembly. In the figure, reference numeral 1 denotes a conduit, which has an annular bulging wall 2 extending outward, which is provided near the connecting end on the side of the joint body during assembly. Reference numeral 3 denotes the joint body, which preferably has a small diameter chamber 6' inside the shaft core that is enlarged in diameter following the communication hole 5 of the connecting cylinder wall 4 (the tip part is omitted in the figure) such as a resin tube on the distal end side, and a small diameter chamber 6' at the rear thereof. A stepped diameter-enlarging chamber 6 is provided therethrough, a notch window 7 is provided in the rear end peripheral wall of the diameter-expanding chamber 6, and the rear end peripheral wall is formed as a hanging wall 8. . A plurality of elastic sealing members 9 made of rubber or the like are inserted into the expanded diameter chamber 6 via spacers 9a, and a sleeve 10 is inserted behind the elastic sealing members 9. The sleeve 10 has an inner diameter that slides on the conduit 1, and an outer diameter that is approximately the same or slightly larger than the outer diameter of the annular bulging wall 2, and passes through the enlarged diameter chamber 6. Reference numeral 11 denotes a socket body made of an elastic material such as resin, and has a substantially C-shaped arm portion 11a and three hooking portions 11b protruding from the arm portion in the inner diameter direction and holding the conduit 1 at intervals of, for example, 120 degrees. , the hook part 11b is inserted through the notch window 7 provided in the joint body 3 to be attached.

[0011] The socket body 11 can also be integrally molded with the arm portion 11a made of a plate-like or linear spring, and the hook portion 11b made of a resin material.

In the piping connector constructed as described above, the sleeve 10 is inserted into the socket body 1 in advance as shown in FIG.
1, and the socket body 11 is inserted into the conduit 1.
It is assembled in a state where it is opened to approximately the same diameter as the annular bulging wall 2 of.

Next, when the conduit 1 is inserted into the joint body 3, the sleeve 10 is pushed by the annular bulging wall 2 and moves in the axial direction, and when the bulging wall 2 passes through the socket body 11, the sleeve 10 moves in the axial direction. 11 is closed (see FIG. 1) and cooperates with the annular bulging wall 2 of the conduit to retain the conduit 1 within the fitting body 3.

Next, FIG. 4 is a diagram showing another embodiment of the connector in an assembled state, and is a view taken along the line B--B in FIG. 5. FIG. 5 is a view taken along the line A--A in FIG. The socket body 21 is made by bending a spring wire made of tempered stainless steel and attaching the arm portion 2
1a and a hook portion 21b may be formed.

[0015] In this way, the outer diameter of the socket body 21 can be reduced, and the insertion force of the conduit can be reduced. However, since it becomes unstable to stably hold the socket body on the sleeve before insertion, the sleeve 2
An enlarged diameter chamber 20a in which the annular bulging wall 2 can be accommodated is provided at the rear end so that it can be inserted into the joint body 3, and a tapered part 20b is provided between the small diameter parts, and the socket body 21 is locked at the base of the tapered part 20b. A groove 20c is provided. In this case, the locking portion 21b of the socket body 21 is locked in the locking groove 20c of the sleeve 20 before the conduit is inserted.

In the insertion operation, in the state shown in FIG. 6, first, when the conduit 1 is inserted, the annular bulging wall 2 enters the enlarged diameter portion 20a of the sleeve 20 and is pushed and moved in the axial direction. At this time, the socket body 21 is expanded by the tapered portion 20b (see FIG. 7) and passes through the socket body 21 together with the annular bulging wall 2, and the socket body 21 is closed (see FIG. 4) and cooperates with the annular bulging wall 2. The conduit 1 is held within the fitting body 3 by the following functions.

Next, FIGS. 8 to 11 show other embodiments of the present invention, in which FIG. 8 is a view taken along arrow B-B in FIG. 9, and FIG. 9 is a view taken along arrow A in FIG.
-A arrow view, Figure 10 is a sectional view showing the state before assembly, Figure 1
1 is a sectional view showing a state in the middle of assembly, and its purpose is to enable confirmation of the state of the seal ring before assembling the conduit. As shown in the figure, the annular bulging wall 2 is placed between the annular bulging wall 2 on the conduit 1 and a stopper 2a provided near the end thereof.
A spacer 31 having an enlarged diameter portion 31a for accommodating a spacer 31, followed by a plurality of seal rings 9 and spacers 9a are arranged and attached. Next, a sleeve 30 is provided that slides on the small diameter part of this spacer 31, and its outer diameter is equal to the diameter of the enlarged diameter part 31a of the spacer 31, and its length is set until the conduit 1 is inserted into the joint body 3. When the spacer 31 and sleeve 30 are close to each other, they stop inside the joint body 3, and the spacer 31
The rear end of the enlarged diameter portion 31a is made so that the front surface of the socket body 11 passes through. The shape of the sleeve 30 is such that it can be easily inserted into the joint body or into the spacer 31.

Next, in the assembly operation, as shown in FIG. 9, the sleeve 30 is inserted into the socket body 11 in advance, and the socket body 11 is expanded. Then, the conduit 1 on which the spacer 31, the seal ring 9, etc. are arranged is inserted into the sleeve 30 in the joint body 3, and when the sleeve 30 is pushed together with the enlarged diameter part 31a of the spacer 31, the rear end of the enlarged diameter part 31a and the socket body 11 are pushed together. is disengaged, the socket body 11 closes and cooperates with the annular bulge wall 2 to retain the conduit 1 within the fitting body.

[0019]

[Effects of the Invention] Since the present invention is constructed as described above, it produces the following effects.

In the piping connector of the present invention, the socket body is ring-shaped and does not have a tapered portion for receiving the conduit, so it can be made thin, its overall length is short, and its outer diameter is small, and the insertion force of the conduit can be reduced by the holding means. Since the socket can be inserted in an open state, the insertion force is small, and the socket body can be manufactured at low cost and made smaller.

Furthermore, since the condition of the seal ring can be checked before assembling the conduit, problems caused by damage to the seal ring, missing parts, etc. can be prevented, and the conduit can be inserted into the joint body with the holding means open. , the seal ring will not be damaged during assembly.

[Brief explanation of the drawing]

FIG. 1 is B of FIG. 2 showing an embodiment of the piping connector of the present invention.
-B arrow view, FIG. 2 is an A-A arrow view in FIG. 1, FIG. 3 is a cross-sectional view of main parts in the middle of assembly, and FIG.
5 is a view taken along the line A-A in FIG. 4, FIG. 6 is a sectional view of the main part showing the state before assembly, FIG. 7 is an enlarged view of the main part showing the state during assembly, and FIG. A BB arrow view of FIG. 9 showing an example of
9 is a view taken along the line A--A in FIG. 8, FIG. 10 is a cross-sectional view showing a state before assembly, and FIG. 11 is a cross-sectional view showing a state during assembly.

[Explanation of symbols]

1 Conduit 2 Annular bulging wall 3 Joint body 4 Connecting cylinder wall 5. Flow hole 6 Diameter expansion chamber 6' Small diameter room 7 Cutout window 8 Hanging wall 9 Seal ring material 10 Sleeve 11 Socket body 11a Arm part 11b Latch part 20, 30 Sleeve 20a Expanded diameter part 20b Taper part 20c groove 21 Socket body 31 Spacer

Claims (4)

[Claims] Claim: 1. A conduit having an annular bulging wall near its end;
It consists of a joint body having an axial communication hole that receives the conduit at one end and communicates with the other end, a sealing means installed in the joint body, a sleeve installed at the rear end, and a holding means assembled to the joint body. In the connector, the sleeve is housed within the fitting body for a fixed length, slides axially over the conduit, and has an outer diameter approximately equal to or slightly larger than the diameter of the annular bulge wall, while the retaining means is elastic. A socket body consisting of a substantially C-shaped arm part consisting of a body and a plurality of hook parts protruding in the inner diameter direction of this arm part and clamping the conduit is inserted into a cutout window of the joint body. Before insertion, the sleeve was engaged with the socket body to assemble the socket body in an open state, and when the conduit was inserted, the bulging wall moved axially within the socket together with the sleeve to close the socket body. Piping connector. [Claim 2] The arm part and the hook part of the socket body are formed by bending a spring wire, while the rear end of the sleeve has an enlarged diameter part in which an annular bulging wall can be accommodated, and an enlarged diameter part. 2. The piping connector according to claim 1, further comprising a tapered portion on the outer periphery between the small diameter portions, and an engagement groove at the base thereof into which the hooking portion of the socket body engages. 3. A spacer having an enlarged diameter portion for accommodating the annular bulging wall and a seal ring following the spacer is provided between the annular bulging wall on the conduit and a stopper provided near the end, and the sleeve is attached to the spacer. Before inserting the conduit, the sleeve is engaged into the socket body by sliding it over the small diameter part and making the outside diameter equal to the enlarged diameter part of the spacer, and when the conduit is inserted, the sleeve is inserted into the socket together with the spacer at the enlarged diameter part of the spacer. 2. The piping connector according to claim 1, wherein the socket body is closed by moving in the axial direction. 4. The piping connector according to claim 1, wherein the socket body is integrally molded with a substantially C-shaped arm portion provided with a plate-shaped or linear spring, and a hook portion made of resin.