JPH109454A - Connecting joint for small diameter piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate an another socket body and assembly therefor so as to prevent troublesome complication by arranging a slit extending a projection wall on both left and right sides of a plurality of tongue elastic walls, enlarging each the elastic wall in association with push-press inward on the projection wall between slits, and releasing pressure applied on a claw wall. SOLUTION: An elastic sealing member 6 made of rubber and the like and a cylindrical bush member 7 are mounted on the small diameter chamber 3' part of a main body 1. A plurality of tongue elastic wall 1" which is projected forward, whose top end part is formed as a claw wall 5, and which is inclined inward, is integratedly arranged on a notch window groove 1' drilled on a part opposed to the circumferential wall of a large diameter chamber 3. Slits 9, 9' extending a projection wall 10 are arranged on both left and right sides of the elastic wall 1", each elastic wall 1" is enlarged in association with push- press inward on the projection wall 10 between slits 9, 9', and pressure applied on the claw wall 5 is released. It is thus possible to eliminate an another socket body and assembly therefor so as to prevent troublesome complication.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a motor vehicle or various machines, devices, and the like, and has a relatively small diameter of about 20 m / m or less, which is provided as a pipe for supplying oil and air. The present invention relates to a connection joint for a metal tube or a hard resin tube (hereinafter, simply referred to as piping).

[0002]

2. Description of the Related Art Conventionally, as this kind of connector for connection, for example, as shown in FIG. 7, a hanging support wall (25) formed around a rear end of an engagement hole (25) formed in a peripheral wall portion of a connector (21). 2
1 '), a separate socket body (22) having a plurality of inwardly inclined claw walls (23) at the front in the mounting direction of the peripheral wall portion of the shaft center central hole is provided at the hole edge portion. With the shoulder (24) of the base formed by the claw wall engaged, the rear end side annular peripheral wall (23 ') is inserted and fitted inside, and the expansion of the pipe (P ₀ ) incorporated therein is expanded. The outgoing wall (P ₀ ′) is formed by the nail wall (23).
Was configured to be pressed. (2
1 ″) is a protruding wall on the distal end side of the connector (21),
A resin tube is inserted and connected.

[0003]

However, in such a conventional technique, when assembling the socket body (22), the annular peripheral wall (23 ') formed by the shoulder (24) of the socket body is crushed. Since it passes through the inside of the hanging wall (21 '), the assembling work is remarkably troublesome, and the engagement of the shoulder (24) inside the hanging wall (21'). In connection with this, the socket body is generally made to have a large diameter and the nail wall (23) is forced to be long and thin, so that the nail wall may be loosened due to pressurized fatigue for a long period of time and the socket body ( 22), a displacement in the rotation direction is caused. Further, there is a problem that it is extremely difficult to release the engagement pressure on the claw wall (23) when the pipe (P ₀ ) is released from the connected state.

[0004] The present invention has been made in view of the above-mentioned problems of the prior art, and eliminates the need for a separate socket body and its assembly as in the prior art, eliminating the need for any inconvenience, and has a relatively short size. The resilient wall structure, which can be made thin, makes the long-term engagement pressure on the pipe side at the claw wall part strong and reliable without displacing, and when the pipe is released, It is an object of the present invention to provide a small-diameter pipe connection joint capable of immediately releasing the engagement pressure of the claw wall portion by an extremely simple operation by pressing inward.

[0005]

According to the present invention, in order to achieve the above object, a small-diameter chamber and a large-diameter chamber are formed inside a shaft core so as to extend along a flow hole of a connecting cylinder wall on the distal end side. An elastic seal ring member and a bushing member are mounted on the small diameter chamber portion of the main body, and a front portion of the large diameter chamber is inclined inward by projecting forward in a notched window groove formed in a facing portion of a peripheral wall of the large diameter chamber. A tongue-shaped resilient wall having a tip portion serving as a claw wall is integrally provided, and a slit is formed on each of the left and right sides of each of the resilient walls to extend to a protruding wall around a rear end formed by a base portion, Further, a reinforcing tubular ring member is attached and fixed to the outside of the peripheral wall of the large-diameter chamber by being separated from the resilient wall portion, and the resilient tubular ring member is resiliently pressed by the inwardly-pushed press at the protruding wall portion between the slits. Abstract: A connecting joint for a small-diameter pipe configured to expand a wall portion to release a pressure applied to an annular bulging wall portion on a connecting pipe side of a claw wall portion. It is intended to.

According to the present invention, the elastic wall is expanded in accordance with the present invention when the expanded wall comes into contact with the inclined elastic wall at the time of connection of the pipe at the time of connection. The bulging wall portion is pressed by the claw wall portion due to the elastic return of the resilient wall to the inward direction, and at the time of release, the inwardly protruding wall portion formed by the base portion connected to the resilient wall portion. The outward expansion of the resilient wall side due to the knob-like pressing results in the release of the clamping force, so that there is no need for a separate socket body and its assembly as in the prior art, and there is no trouble. At the same time, due to the structure of the resilient wall which can be made relatively short and thick in relation to the integration with the main body at the resilient wall formed by the claw wall, it is possible to extend the protruding wall to the pipe side for a long time. Eliminating the displacement due to loosening of the engagement pressure, it is strong and can be securely connected, It soon be able to perform the releasing of Tsumekabe portion by an extremely simple operation by knob-shaped pressing inward on the protruding wall upon release of the pipe was.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a connecting joint for small diameter piping according to the present invention in a partially cutaway state when the piping is connected. 2 is a rear view in the connection direction of FIG. 1, FIG. 3 is a partially cutaway sectional view at a substantially 90 ° rotation position in FIG. 1, FIG. 4 is an explanatory view of FIG. 1 in a pipe open state, and FIG. 1 is a partially cutaway cross-sectional view of the main body itself, and FIG. 6 is a perspective view of the tubular ring member of FIG. 1, wherein (1) is a main body as a joint, and a resin protruding from the distal end side inside the shaft core. A small-diameter chamber (3 ') having an enlarged diameter connected to the flow hole (4) of the connecting cylinder wall (2) for inserting a tube (not shown) and a large-diameter chamber (3) are provided behind the small-diameter chamber (3'). It becomes.

Then, the small diameter chamber (3 ') of the main body (1).
A notch window provided with an elastic seal ring member (6) made of a rubber material, a resin material, or the like, and a cylindrical bush member (7), and formed in opposing portions of the peripheral wall of the large-diameter chamber (3). In the groove (1 ') part, protrude forward and attach the tip part to the nail wall (5).
And a tongue-shaped resilient wall (1 ") which is inclined inward and formed integrally with each other, and further provided on both left and right sides of each of the resilient walls a slit (10) extending to the outside protruding wall (10) around the rear end of the base. 9),
(9 ').

Reference numeral (8) denotes a reinforcing cylindrical ring member, which is separated from the resilient wall (1 ") portion and has an adhesive or a pair of concave and convex portions on the outer peripheral wall of the large-diameter chamber (3). The slits (9), (9) are released from the connected state by the pressure of the pawl wall (5) at the annular bulging wall (P ') of the pipe (P). ′), The resilient wall (1 ″) side is expanded outward by the inward push of the protruding wall (10), and the connection pipe (P) formed by the claw wall (5) expands. The structure is such that the pressure applied to the wall (P ') is released.

[0010]

As described above, the connection joint for small-diameter piping according to the present invention is particularly advantageous in that the claw wall (5) is provided at the tip end of the tongue-shaped elastic wall (1 ") so as to be integrally formed. Relatedly, slits (9) and (9 ') are provided on both the left and right sides of each of the resilient walls (1 ") so as to reach the protruding wall (10), and the protruding wall (10) between the slits is provided. Since the resilient wall is expanded in response to the inward pressure to release the engagement pressure at the claw wall (5), no additional socket body and its assembly are required, and bothersome. The elastic wall (1 "), which can be made relatively short and thick, associated with said integral part of the claw wall (5),
A long-term engagement pressure at the claw wall (5) can be strengthened without displacement and can be securely connected. In addition, when the pipe (P) is released, the inside of the protruding wall (10) is This is a very useful connection joint for small-diameter pipes, for example, the urging force can be immediately released by an extremely simple operation by means of a pinch-like pressing to the side.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a connection joint for small-diameter pipes according to an embodiment of the present invention, which is partially cut away in a pipe connection state.

FIG. 2 is a rear view in the connection direction of FIG. 1;

FIG. 3 is a partially cutaway sectional view at a substantially 90 ° rotation position in FIG. 1;

FIG. 4 is an explanatory view in a pipe open state of FIG. 1;

FIG. 5 is a partially cutaway sectional view of the main body of FIG. 1;

FIG. 6 is a perspective view of the tubular ring member of FIG. 1;

FIG. 7 is a partially cutaway sectional view of a connection joint for small diameter piping showing a conventional example in a pipe connection state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 1 'Notch window groove 1 "Resilient wall 2 Connecting cylinder wall 3 Large diameter chamber 3' Small diameter chamber 4 Flow hole 5 Claw wall 6 Elastic seal ring member 7 Bush member 8 Cylindrical ring member 9, 9 'Slit 10 Projection Wall P Piping P 'Annular bulging wall

Claims (1)

[Claims] 1. A small-diameter chamber (3 ') and a large-diameter chamber (3) whose diameters are increased in connection with a flow hole (4) of a connecting cylinder wall (2) on the distal end side are penetrated inside the shaft core. A notch window groove in which an elastic seal ring member (6) and a bush member (7) are mounted in the small diameter chamber portion of the main body (1), and which is formed in an opposing portion of a peripheral wall of the large diameter chamber (3). A tongue-shaped resilient wall (1 ") having a forwardly projecting and inwardly inclined tip portion serving as a claw wall (5) is integrally provided at the portion (1 '), and further, on both the left and right sides of each of the resilient walls. And a slit (9, 9 ') extending to the outside protruding wall (10) around the rear end formed by the base portion, and further separated from the resilient wall (1 ") portion to form a large-diameter chamber. Attach and fix the reinforcing tubular ring member (8) outside the peripheral wall of (3), and fix the slit (9,
9 '), the resilient wall (1 ") is expanded by the inward knob-like pressing of the protruding wall (10), and the claw wall (5) is connected to the annular bulge on the connection pipe (P) side. A connection joint for small-diameter piping, characterized in that it is configured so as to release the pressure applied at the exit wall (P ').