JPH09303627A - Small diameter piping connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a socket and assembly thereof, and improve connecting workability by forming a claw wall on the top end part of a tongue shaped elastically press wall integratedly with a main body, closing the elastically press wall in association with sliding of a mounted ring member, and carry out engagement on the claw wall part and release thereof. SOLUTION: A small diameter chamber 3' and a large diameter chamber 3 which are formed continuously to the circulating hole 4 of the connecting cylindrical wall 2 of a top end side are penetrated on a main body 1, and elastic seal ring member 6 and a bush member 7 are mounted in the small diameter chamber 3'. A notch window groove 1' is drilled around the opposing part to the circumferential wall of the large diameter chamber 3, and a tongue shaped elastically press wall 1" which is projected slantly and whose top end part is formed as a claw wall 5 and outer side is formed as an expansion surface 5' is formed integratedly with the notch window groove 1'. A ring member 8 having a positioning means is mounted on the differential mounted surface of the outer side of the circumferential wall of the large diameter chamber 3, the elastically press wall 1" is enlarged in association with the sliding, and engagement of the annular expansion wall P' of a connecting pipe P in the claw wall 5 part and release thereof are carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally comprises a pipe diameter provided as an oil supply and air supply passage in an automobile or various machines and devices, and has a relatively small diameter of about 20 m / m or less. The present invention relates to a connector for connecting a metal tube or a hard resin tube (hereinafter simply referred to as piping).

[0002]

2. Description of the Related Art Conventionally, as a connecting connector of this type, for example, as shown in FIG. 9, a hanging wall () formed by a rear end of an engaging hole (25) formed in a peripheral wall portion of a connector (21) ( Two
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).
It was configured to be pressed by. (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 the socket body (22) is assembled, the annular peripheral wall (23 ') formed by the shoulder portion (24) of the socket body is pushed. Since it is crushed and passed through the inside of the hanging wall (21 '), the assembling work becomes extremely troublesome, and the engagement of the shoulder portion (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 required to be long and thin, so that the nail wall is loosened due to pressure fatigue for a long period of time. This causes a displacement of the socket body (22) in the rotation direction, and further makes it extremely difficult to release the engagement pressure on the claw wall (23) when the pipe (P ₀ ) is released from the connected state. There was a problem.

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, thereby eliminating the troublesome work and further comparing Due to the structure of the elastic wall that can be made relatively short and thick, the long-term engagement pressure on the pipe side at the claw wall can be made strong and reliable without displacement and the ring can be connected and disconnected at the time of ring. An object of the present invention is to provide a connector for small-diameter piping that can be immediately performed by an extremely simple operation by sliding a member.

[0005]

In order to achieve the above object, the present invention has a main body formed by penetrating a small-diameter chamber and a large-diameter chamber, which are expanded in diameter inside a shaft core in a manner connected to a connecting cylinder wall on the tip side. The elastic seal ring member and the bush member are internally provided in the small diameter chamber of
And, in the notched window groove portion formed in the opposing portion formed by the peripheral wall of the large-diameter chamber, while projecting forward to form the tip portion as a claw wall,
A tongue-shaped elastic wall whose outer surface is a bulging surface is integrally formed, and further, a ring member having a positioning means is mounted on the mutual mounting surface with the outer surface of the peripheral wall of the large diameter chamber so as to be slidable in the front-rear direction,
A gist of a connector for small-diameter pipes configured to expand and close the resilient wall portion in accordance with the sliding to apply and release pressure on the annular bulging wall portion of the connecting pipe at the claw wall portion. It is what

Since the present invention is configured as described above, the ring member is positioned rearward and the pressing state of the bulging surface is applied to the claw wall at the bulging wall portion accompanying the insertion of the pipe at the time of connection. The elastic wall expands as it abuts, and the elastic wall of the claw wall returns to the inner side to press the bulging wall. To push the elastic wall inward to apply pressure on the claw wall, and when releasing it, the ring member slides in the front-rear direction to move outward, causing the elastic member to move outward. As a result, the engagement pressure is released by the elastic return to the claw wall, thus eliminating the need for a separate socket body and its assembly, unlike the prior art, and without the troublesome work, and at the same time the resilience of the claw wall. Relatively short and thick, associated with the body at the wall Due to the structure of the elastic wall that can be made, it is possible to make a strong and reliable connection without displacement due to loosening of the engaging pressure on the pipe side at the claw wall for a long time, and when connecting and releasing the pipe. It can be immediately performed by an extremely simple operation by sliding the ring member in the front-rear direction.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a connector for small diameter piping according to the present invention with a partial cutout in a pipe connection state, 2 is a rear view of the connection direction of FIG. 1, FIG. 3 is an explanatory view of the pipe released state of FIG. 1, FIG. 4 is a partially cutaway sectional view of the main body of FIG. 1, FIG. 5 is a rear view of FIG. 6 is a partially cutaway sectional view of FIG. 4 at a rotation position of about 90 °, FIG. 7 is a plan view of the ring member of FIG. 1, FIG. 8 is a side view of FIG. 7, and (1) is a connector And a small diameter chamber (3) having a diameter increased in series with a flow hole (4) of a connecting cylinder wall (2) for inserting a resin tube (not shown) protruding toward the tip side inside the shaft core. ′) And a large diameter chamber (3) penetrating therethrough, and an elastic seal ring member (6) made of a rubber material or a resin material and a tubular shape in the small diameter chamber portion. A bush member (7) is housed inside, and a notch window groove (1 ') formed in a facing portion of a peripheral wall on the side of the large diameter chamber (3) is protruded forward and its tip portion is claw wall (5). ), And a tongue-like elastic wall (1 ″) whose outside is a bulging surface (5 ′) is integrally formed.

Reference numeral (8) is a ring member, and annular positioning means (9) is provided on the mutual mounting surface of the large diameter chamber (3) and the outer side of the peripheral wall of the large diameter chamber (3) for engagement in the front-back direction. The elastic wall part is slidably mounted, and the elastic wall part is expanded and closed by pressing and elastically separating the elastic wall (1 ″) part on the bulging surface (5 ′) of the elastic wall part (1 ″). The connection pipe (P) at the claw wall (5) is configured to engage and release the pressure on the annular bulging wall (P ').

At the time of the expansion and closing, first, as shown in FIG. 1, the ring member (8) is preliminarily positioned rearward and the bulging surface (5 ') is pressed to insert the connecting pipe (P). As the claw wall (5) abuts on the bulging wall (P '), the elastic wall (1 ") is expanded and then elastically returned to the claw wall part to apply pressure, or as shown in FIG. 3, the ring member (8) is positioned in the front in advance, and after the pipe (P) is inserted, it is slid backward to press the bulging surface (5 ') inward and the claw wall (5) is used. The pressure is applied.

[0010]

As described above, in the connector for small diameter piping according to the present invention, the claw wall (5) is particularly provided at the tip of the tongue-like resilient wall (1 ") to be integrated with the main body (1). In relation to the formation of the ring member, the elastic wall is expanded and closed with the sliding of the mounted ring member (8) so that the engagement pressure and the release of the claw wall (5) can be performed. Since it is configured, the socket body and its assembly are not required at all, and the troublesomeness at the time of work can be eliminated, and the relatively short size and thick wall related to the above-mentioned integration of the claw wall (5) part Due to the structure of the elastic wall (1 ″) that can be achieved, it is possible to make the engaging pressure at the claw wall (5) portion for a long period of time strong and secure without displacement, and to connect the pipe (P). In addition, the release can be immediately performed by a very simple operation by sliding the ring member (8). That, etc., is a very useful small-diameter piping connection connector.

[Brief description of drawings]

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

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

FIG. 3 is an explanatory diagram of the pipe open state of FIG. 1.

FIG. 4 is a partially cutaway sectional view of the main body of FIG.

FIG. 5 is a rear view of FIG.

FIG. 6 is a partially cutaway cross-sectional view at a substantially 90 ° rotated position of FIG.

FIG. 7 is a plan view of the ring member of FIG.

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a partially cutaway cross-sectional view of a conventional connector for small-diameter pipes 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 Distribution hole 5 Claw wall 5'Swelling surface 6 Elastic seal ring member 7 Bushing member 8 Ring member 9 Positioning means P Piping P'annular bulging wall

Claims (1)

[Claims] 1. A small-diameter chamber (3 ') and a large-diameter chamber (3), which are expanded in diameter and are continuous with a through hole (4) of a connecting cylinder wall (2) on the tip side, are provided inside the shaft core. A notched window groove in which an elastic seal ring member (6) and a bush member (7) are housed in the small diameter chamber portion of the main body (1), and which is bored at an opposing portion formed by the peripheral wall of the large diameter chamber (3). The tongue-like resilient wall (1 ″) is formed integrally with the (1 ′) part so as to project forward and form the tip part thereof as the claw wall (5) and the outer side as the bulging surface (5 ′). A ring member (8) having a positioning means is slidably mounted in the front-rear direction on the mutual mounting surfaces of the large diameter chamber (3) and the outside of the peripheral wall, and the elastic wall (1) ″) Is expanded and closed, and an annular bulging wall (P ′) of the connecting pipe (P) is provided at the claw wall (5).
A connector for small-diameter piping, characterized in that it is configured to apply and release pressure to a section.