JPH0953771A - Small diameter pipe jointing connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wholly dispense with separate use of a socket body and its installation, simplify the formation of the whole product as a connector, and attain weight reduction and size reduction by making the vicinity of a corner wall part inclining in an inward twisted shape by crossing circular arc grooves and separating groove function as a claw wall. SOLUTION: A connector main body 1 is formed by penetratingly arranging a stepped small diameter chamber 3' and a large diameter chamber 3 so as to continue with a flowing hole 4 of a tip side connecting cylinder wall 2 inside of the axis, and is installed in a small diameter chamber 3' part through an elastic sealing ring member 6 and a spacer, and an annular bush member 7 is internally installed in its rear part. A separating groove 5 is crossed with circular arc grooves 8 bored so as to be oppositely positioned in a wall part of the large diameter chamber 3, and is arranged in an almost T shape as a whole, and this is integrally molded with a connector main body 1 by pressing the vicinity of a crossing corner wall 1' part so as to incline in an inward twisted shape. An annular swelling wall P' part of connecting piping P to be incorporated inside is connected to a tip part of a corner wall 1' by interposingly pressing it in an elastic repulsive shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a metal having a relatively small diameter of about 20 m / m or less in diameter, which is a pipe provided as a supply passage for oil supply and air supply in automobiles or various machines and devices. The present invention relates to a connector for connecting a pipe or a 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. 7, a hanging wall formed by a rear end of an engaging hole (25) formed in a peripheral wall portion of a connector body (21). A separate socket body (22) in which a plurality of claw walls (23) inclined inwardly in front of the peripheral wall portion of the axial center hole are assembled at the hole edge portion of (21 ′) ) Is attached to the shoulder part (24) of the interior,
It was configured such that the annular bulging wall (P ₀ ') of the pipe (P ₀ ) incorporated therein was pressed by the claw wall (23). still
(21 ") is the protruding wall on the tip side of the connector body (21),
A resin tube or rubber hose is inserted and connected.

[0003]

However, in such a conventional technique, a separate socket body which is engaged with the hanging wall (21 ') formed by the engaging hole (25) of the connector body (21). Due to the structure of (22), in order to crush the annular wall portion formed by the shoulder portion (24) made of the thick wall of the socket body inward at the time of assembling so as to pass through the inside of the hanging wall (21 '), This will cause troublesome assembling operations, and the socket body (22) will generally have a large diameter, so the entire product made by the connector will have a large diameter and a long length, and can be installed and used in tight places. It often had problems such as inconvenience.

The present invention has been made in view of the above problems of the prior art, and in particular, by separately forming the functional portion as the claw wall integrally with the connector body, the socket body is separately used and its assembly. There is no need for attachment at the same time, at the same time the shape of the entire product as a connector is simple,
An object of the present invention is to provide a connector for connecting a small diameter pipe, which is light and compact and can be easily arranged and connected in a narrow place.

[0005]

In order to achieve the above object, the present invention has a stepped small-diameter chamber and a large-diameter chamber, which are extended in diameter and extend in a shaft core and which communicate with a flow hole of a connecting cylinder wall on the tip side. An elastic seal ring member and an annular bush member are internally provided in the small-diameter chamber portion of the connector body, and an arc groove formed to face the wall portion of the large-diameter chamber and the arc groove portion are continuously provided so as to cross the arc groove portion. Each of the corner wall portions formed by the separated groove is integrally provided by inclining inwardly in a twisted shape, and the annular bulging wall portion of the connecting pipe incorporated inside by the tip portion of the corner wall is elastically bulged. The gist of the present invention is a connector for connecting a small diameter pipe, which is configured so as to be connected by pressurizing to, and further, a means for adjusting the engaging pressure at the bulging wall is provided near the corner wall. To do.

Since the present invention is configured as described above,
With an integral structure in which the corner wall portion inclining inwardly in a twisted shape by the intersecting circular arc groove and the separation groove is a claw wall,
The need for a separate socket eliminates the hassle of assembly, and at the same time makes the entire product lightweight and compact due to the simple shape of the connector, and also has a corner wall that inclines like a twist when connecting pipes. With a slight contact resistance that accompanies the expansion and expansion by the bulging wall at any time, the pressing force can be reduced and the operation can be performed smoothly, and the installation and connection use at the squeezed portion can be easily performed. .

[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 a small diameter pipe according to the present invention, which is partially cut away in a connected state, and FIG. 1 is a partially cutaway plan view of the connector body alone of FIG. 1, FIG. 3 is a left side view of the connector body of FIG. 2, FIG. 4 is a view of another embodiment corresponding to FIG. 2, and FIG. 5 is a view of yet another embodiment. 2 is a view corresponding to FIG. 2, in which (1) is the connector body, which is connected to the flow hole (4) of the connecting cylinder wall (2) such as the resin tube or the rubber hose (not shown) on the tip side inside the shaft core. The stepped small diameter chamber (3 ') and the large diameter chamber (3) are provided behind it. Then, an elastic seal ring member (6) made of rubber or the like is attached to the small diameter chamber (3 ') via a spacer, and a positioning annular bush member (7) is internally provided at the rear portion thereof.

Further, (5) is a separation groove, which intersects with the arcuate groove (8, 8 ') formed in the wall of the large-diameter chamber (3) so as to face the wall portion thereof (see FIGS. 2 and 5). ) Or in a diagonal direction (Fig. 4) to form a T-shape or a V-shape as a whole, and the inside of the intersecting corner wall (1 ') part is respectively formed by using a heating punch or the like. It is formed so as to be twisted in one direction and is integrally molded with the connector body (1), and as a result, the corner wall (1 ′) is formed in a cantilever shape. Therefore, the corner wall is
Since the inner surface has a tapered surface that is tapered toward the tip side at an angle with respect to the central axis of (1), it makes contact at the time of contact with the annular bulging wall (P ') on the piping side described later. The area is small and it can be inserted smoothly with a small pressing force.

When the circular groove (8, 8 ') is formed in the wall portion of the large diameter chamber (3), the side wall (8a) on the rear end side is widened toward the outer end as shown in FIG. 6 (a). If it is a curved wall, the side walls after being pressed inward by a heating punch or the like so as to be twisted inward are linear as shown in FIG. 6 (b), and have an annular bulging wall (P ') on the pipe side. ) Will be reliable and stable.

At the time of connecting the pipe (P), as described above, the tip end of the corner wall (1 ') causes the annular bulging wall (P') on the pipe side to push and spread the pipe (P ') at any time. The tip of the corner wall is elastically pressed against the bulging wall.

(9) is the corner wall (1 ') as desired.
It is a means for adjusting the engagement pressure provided near the part, and is formed by a through hole or a local thin wall having various shapes such as a circle and a triangle.

[0012]

As described above, the connector for connecting small diameter pipes according to the present invention, in particular, has a function as a claw wall integrally formed with the connector body by the corner wall (1 '), so that a separate socket body is required. It can be used and assembled at all, and at the same time the overall shape of the product as a connector can be made simple, lightweight and compact, and it can be performed smoothly with a slight pressing force at the time of connection. This is a very useful connector for small-diameter pipe connection, because it can be easily installed and connected in a narrow place, and so on.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a connector for small-diameter pipe connection according to an embodiment of the present invention with a partial cutout in a connected state.

FIG. 2 is a partially cutaway plan view of the connector body alone of FIG.

FIG. 3 is a left side view of the connector body of FIG.

FIG. 4 is a view of another embodiment corresponding to FIG.

FIG. 5 is a view corresponding to FIG. 2 of still another embodiment.

6A and 6B are plan views showing a state where arc grooves are formed, FIG. 6A is a diagram showing a state before pressing a heating punch or the like, and FIG. 6B is a diagram showing a state after pressing.

FIG. 7 is a partially cutaway sectional view of a conventional connector for connecting a small diameter pipe in a connected state.

[Explanation of symbols]

 1 connector body 1'corner wall 2 connecting cylinder wall 3 large diameter chamber 3'small diameter chamber 4 flow hole 5 separation groove 6 elastic seal ring member 7 annular bush member 8, 8'arc groove 9 adjusting means P pipe P'annular bulge wall

Claims (2)

[Claims] 1. A stepped small-diameter chamber (3 ') and a large-diameter chamber (3), which are expanded in diameter and extend through a communication hole (4) of a tip-side connecting cylinder wall (2), are provided inside the shaft core. An arc groove formed by incorporating an elastic seal ring member (6) and an annular bush member (7) inside the small diameter chamber of the connector body (1) and facing the wall of the large diameter chamber (3).
(8, 8 ') and a separation groove (5) that is continuous with the arc groove
Each of the corner wall (1 ') parts formed by and is integrally provided by inclining inwardly in a twisted shape.
Connector for small diameter pipe, characterized in that the annular bulging wall (P ') part of the connecting pipe (P) incorporated inside by the end part of') is configured to be elastically pressed and connected. . 2. The small-diameter pipe according to claim 1, wherein a means for adjusting the engagement pressure at the bulging wall (P ') is provided near the corner wall (1'). Connector for connection.