JPH09303626A - Small diameter piping connecting joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a separate 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 turn of a mounted cylindrical 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, an 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" projected slantly forward and whose top end part is formed as a claw wall 5 is integratedly arranged with the notch window groove 1'. Engaging means 9, 10 are arranged on a surface mounted on the outer side of the circumferential wall of the large diameter chamber 3, and a cylindrical member 8 drilled in the notch window 8' is mounted on a part opposing to the circumferential wall freely to turn in a lateral direction. The elastically press wall 1" is enlarged in association with turn of the cylindrical member 8, and engagement of the expansion wall P' part of the piping 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 joint 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 connection connector of this type, as shown in FIG. 10, for example, a hooking support wall (25) formed around a rear end of an engagement hole (25) formed in a peripheral wall portion of a connector (21). 21 ') a plurality of claw walls (23) which are in front of the peripheral wall of the shaft center central hole in the mounting direction and are inclined inward at the edge of the hole;
With a separate socket body (22) having a state in which the shoulder portion (24) of the base portion formed by the claw wall is engaged, the annular peripheral wall (23 ') on the rear end side is inserted and internally mounted, and The bulging wall (P ₀ ′) of the pipe (P ₀ ) incorporated in the claw wall (2
It was constituted so that the pressure could be applied by 3). (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 crushed. Since it passes 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 thin and long. Therefore, the socket body is loosened due to pressure fatigue of the nail wall for a long period of time. (22) causes a positional shift in the rotating direction, and further makes it very difficult to release the engagement pressure on the claw wall (23) when the pipe (P ₀ ) is released from the connected state. I had one.

The present invention has been made in view of the above problems of the prior art, and its purpose is to eliminate the need for a separate socket body and its assembling as in the prior art, thereby eliminating the troublesomeness, and further relatively. Due to the structure of the resilient wall that can be made short and thick, it is tough and reliable without any positional displacement due to the loosening of the engaging pressure on the pipe side at the claw wall for a long time, and when releasing the pipe. It is an object of the present invention to provide a small diameter pipe connecting joint that can be immediately performed by an extremely simple operation by rotating a tubular member.

[0005]

According to the present invention, in order to achieve the above object, a small diameter chamber and a large diameter chamber, which are connected to a flow hole of a connecting cylinder wall on the distal end side, are formed in the shaft core so as to extend therethrough. An elastic seal ring member and a bush member are housed in the small diameter chamber of the main body, and the tip portion of the claw wall protrudes forward into a notched window groove formed in an opposing portion formed by the peripheral wall of the large diameter chamber. However, a tongue-like elastic wall which is inclined inward or whose outer surface is a bulging surface is integrally formed, and further, on the outer side of the peripheral wall of the large diameter chamber, there are engaging means on the mutual mounting surfaces. Also, a tubular member having a notched window formed in a facing portion of the peripheral wall is rotatably mounted in the left-right direction, and the elastic wall portion is expanded and closed in accordance with the rotation to connect at the claw wall portion. The gist of the present invention is a joint for connecting a small-diameter pipe, which is configured so as to apply pressure to the annular bulging wall portion of the pipe and release it. The coupling means, both those which form form a cyclic or / and a partial structure comprising a pair of uneven.

Since the present invention is configured as described above, the elastic wall is expanded by the contact of the bulging wall portion with the claw wall when the pipe is inserted at the time of connection, and the claw wall portion after that is expanded. Of the bulging wall portion by elastic return to the inside, and thereafter, the urging wall portion is pressed by the rotation of the tubular member in the connected state so that the urging wall portion is pressed. Further, when the cylinder member is released, the engaging pressure is released by the elastic return at the notched window portion where the elastic wall is located due to the detachment due to the rotation of the tubular member. There is no need for any attachment, and at the same time, the structure of the resilient wall, which can be made relatively thick and thick, is associated with the body of the resilient wall made by the claw wall and can be made long-term. No displacement due to loosening of engagement pressure on the pipe side at the claw wall over It can be and reliably exhibit in the strong, also it is possible to carry out immediately by an extremely simple operation by rotation of the disengagement of the tubular member from the connected state of the pipe.

[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 sectional view of a joint for a small diameter pipe according to the present invention, showing a partial cutaway in a pipe connection state, 2 is a rear view of the connecting direction of FIG. 1, FIG. 3 is a partially cutaway sectional view of FIG. 1 at a rotation position of about 90 °, and FIG. 4 is a connecting joint according to another embodiment in a pipe released state. Explanatory drawing with partially cutaway cross section,
5 is a partially cutaway sectional view of the main body of FIG. 4, and FIG.
FIG. 7 is a partially cutaway sectional view of FIG. 5 at a substantially 90 ° rotational position, FIG. 8 is a partially cutaway sectional view of the tubular member of FIG. 1, and FIG. 9 is a perspective view of FIG. In the figure, (1) is a main body as a joint, and is connected to a flow hole (4) of a connecting cylinder wall (2) for inserting a resin tube (not shown) protruding on the tip side inside the shaft core. A small diameter chamber (3 ') having a large diameter and a large diameter chamber (3) provided behind the small diameter chamber (3'), and an elastic seal ring member made of a rubber material, a resin material or the like in the small diameter chamber portion ( 6) and a tubular bush member (7) are internally housed, and a notch window groove (1 ') is bored in an opposing portion of the peripheral wall on the large diameter chamber (3) side.

Then, as shown in FIG. 1, the notched window groove (1 ') is protruded forward and the tip portion thereof serves as a claw wall (5), and the tongue-like resilient wall (1) is inclined inward. ″) Is integrally formed, or as shown in FIG. 4, a tongue-like resilient wall (1 ″) is also integrally formed which also projects forward and has a bulged surface (5 ′) on the outside. is there.

Further, (8) is a cylindrical member, which is mounted on the outside of the peripheral wall of the large diameter chamber (3) by providing a pair of engaging means (9) and (10) on the mutual mounting surfaces, respectively. Further, a notch window (8 ') is formed in the opposing portion of the peripheral wall and is attached so as to be rotatable in the left-right direction, and the outer surface of the resilient wall (1 ") is associated with the rotation. Alternatively, the outer bulging surface (5 ')
The elastic wall portion is expanded and closed by pressing with the elastic force and its elastic release, so that the pipe (P) to be connected at the claw wall (5) is engaged and released to the annular bulging wall (P '). It is configured to do.

If desired, each of the engaging means (9) and (10) may be formed of a pair of concavo-convex rings or / or
And a partial structure so that the tubular member (8) can be smoothly rotated and at the same time, the rotational positioning thereof can be easily performed. Further, the elastic wall (1 ″) side The bulging surface (5 ') can be provided inside the cylindrical member (8) which rotates depending on the design.

[0011]

As described above, in the joint for connecting small-diameter pipes according to the present invention, the claw wall (5) is particularly formed by the tongue-like resilient wall (1 ″).
In relation to being formed integrally with the main body (1) by being provided at the tip end portion of the claw wall (5) part, the elastic wall is expanded and closed with the rotation of the mounted tubular member (8). Since it is configured to engage and release the pressure with the socket body, it is possible to eliminate the need for a separate socket body and its assembly, and to eliminate the hassle. With the structure of 8), there is no fear of positional displacement due to loosening of the engagement pressure at the claw wall (5) for a long period of time, and the connection can be made strong and reliable, and when the connection of the pipe (P) is released, the tubular member. (8)
It is an extremely useful joint for connecting small diameter pipes, which can be immediately performed by an extremely simple operation by rotating.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a joint for small-diameter pipe connection according to an embodiment of the present invention with a partial cutout 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 with a partially cutaway cross section of a connection joint according to another embodiment when the pipe is released.

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

FIG. 6 is a rear view of FIG. 5;

FIG. 7 is a partially cutaway cross-sectional view at a substantially 90 ° rotated position of FIG.

8 is a partially cutaway sectional view of the tubular member of FIG.

FIG. 9 is a perspective view of FIG.

FIG. 10 is a partially cutaway sectional view of a conventional joint for connecting a small diameter pipe when the pipe is connected.

[Explanation of symbols]

 1 main body 1'notch window groove 1 '' elastic wall 2 connecting cylinder wall 3 large diameter chamber 3'small diameter chamber 4 flow hole 5 claw wall 5'bulging surface 6 elastic seal ring member 7 bush member 8 cylindrical member 8'notch Windows 9 and 10 engaging means P piping P'annular bulging wall

Claims (3)

[Claims] 1. A small-diameter chamber (3 ') and a large-diameter chamber (3), which are expanded in diameter and extend through a communication hole (4) of a connecting cylinder wall (2) on the tip side, are provided inside the shaft core. 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 a notch window groove (a notch window groove formed in an opposing portion formed by the peripheral wall of the large diameter chamber (3) ( 1 ') part is integrally formed with a tongue-like resilient wall (1 ") which projects forward and forms a claw wall (5) and is inclined inward, and further, of the large diameter chamber (3). A cylindrical member (8) having engaging means (9) and (10) on the mounting surfaces on the outside of the peripheral wall and having a cutout window (8 ') formed in the opposing portion of the peripheral wall in the left-right direction. The claw wall (5) is rotatably mounted, and the elastic wall (1 ″) is expanded and closed with the rotation.
A joint for connecting a small diameter pipe, characterized in that the connection pipe (P) is engaged with and released from the annular bulging wall (P ') at the section. 2. A small-diameter chamber (3 ') and a large-diameter chamber (3), which are expanded in diameter and extend through a communication hole (4) of a connecting cylinder wall (2) on the distal end side, are provided inside the shaft core. 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 a notch window groove (a notch window groove formed in an opposing portion formed by the peripheral wall of the large diameter chamber (3) ( The tongue-like elastic wall (1 ″), which protrudes forward and forms a bulging surface (5 ′) on the outside, is formed integrally with the 1 ′) portion, and is further formed on the outside of the peripheral wall of the large diameter chamber (3). A cylindrical member (8) having engaging means (9) and (10) on its mounting surface and having a notch window (8 ') formed at a facing portion of a peripheral wall is mounted so as to be rotatable in the left-right direction. Then, the elastic wall (1 ″) is expanded and closed in accordance with the rotation, and the connecting pipe (P) is provided at the claw wall (5).
A joint for connecting a small-diameter pipe, characterized in that it is configured to apply pressure to the annular bulging wall (P ') and release it. 3. The small diameter according to claim 1 or 2, wherein each of the engaging means (9) and (10) is formed as an annular or / and partial structure consisting of a pair of concaves and convexes. Pipe connection joint.