JP3693269B2 - Connector device for small diameter pipe connection - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention generally relates to a metal tube or a hard resin tube (having a relatively small diameter of about 20 m / m or less, a tube diameter provided as a supply path for oil supply or air supply to automobiles or various machines and devices. (Hereinafter simply referred to as piping).
[0002]
[Prior art]
Conventionally, as this type of connecting connector device, for example, as shown in FIG. 11, the hanging wall (21 ') formed by the rear end periphery of the engaging hole (25) drilled in the peripheral wall portion of the connector (21). At the hole edge, a socket body (22) having a plurality of claw walls (23) inclined inward at the front part in the assembly direction of the peripheral wall part of the axial center hole is a shoulder of the base part formed by the claw wall With the part (24) engaged, the annular peripheral wall (23 ') on the rear end side is inserted and installed, and the bulging wall (P ₀ ') part of the pipe (P ₀ ) incorporated therein Is configured to be pressed by the nail wall (23). Reference numeral (21 ″) denotes a protruding wall on the distal end side of the connector (21) for inserting and connecting the resin tube.
[0003]
[Problems to be solved by the invention]
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 to hang the supporting wall (21'). Since it is allowed to pass through the inside, the assembly work of the socket body (22) is remarkably troublesome, and it is related to the engagement of the shoulder (24) inside the hanging wall (21 '). Thus, the socket body has a generally large diameter and a long and thin wall on the claw wall (23), and the socket body (22) is loosened due to pressure fatigue of the claw wall portion over a long period of time. ) Will be displaced in the rotational direction, and the overall large-diameter structure of the connector will often cause problems such as obstructing connection in a scooping place, and so on. I had it.
[0004]
The present invention has been made in view of the above-mentioned problems of the prior art, and makes the assembly operation of the socket body extremely easy to eliminate the troublesomeness, and at the same time, the long-term relationship to the piping side at the claw wall portion. A connector for small-diameter pipes that can be used to make the pressure strong and reliable without causing displacement, and can be easily installed without any hindrance due to the compact structure of the entire connector. The object is to provide an apparatus.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a small-diameter chamber portion of a connector body in which a small-diameter chamber having a large diameter and a large-diameter chamber are provided in the shaft core so as to extend through the flow hole of the connecting cylindrical wall on the distal end side. A tongue-like wall having an elastic seal ring member and a cylindrical annular bush member, and projecting forward in a notch groove portion formed in an opposing portion formed by the peripheral wall of the large-diameter chamber and having a resilient function in the radial direction A claw wall that is integrally provided with the tongue-shaped wall and that opposes the distal end side of the tongue-like wall and elastically urges the annular bulging wall of the connected pipe to overlap with the tongue-like wall portion A socket body that is continuously provided by a belt wall on the side surface thereof, and the tongue-like wall on the connector body side is engaged with a longitudinal groove portion provided on the claw wall portion in the overlapping portion, and the groove portion The left and right rear edges are hung on an annular base formed by a tongue-shaped wall so that the connector body is internally mounted. The connector device for connecting a small-diameter pipe is formed, and the rear end portion of the socket body is formed to protrude outward from the rear end edge portion formed by the annular base portion of the connector body. It is formed by having an outwardly projecting wall at the tip of the wall.
[0006]
As described above, in the present invention, the tongue wall on the side of the connector main body provided integrally, the thick and strong structure that is polymerized by the engagement in the groove formed by the socket body, and the left and right rear of the groove With the support structure at the annular base part where the end edge part is a tongue-like wall, the assembly operation of the socket body is made extremely easy and trouble-free, and the engagement pressure on the pipe over the long time at the claw wall is reduced. It can be strong and reliably demonstrated without causing displacement in the direction of rotation, and can be easily and conveniently placed in a scooping place with a compact structure for the entire connector. In addition, it is possible to easily release the engagement pressure at the bulging wall portion of the nail wall as desired.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a small-diameter pipe connection connector device according to the present invention when the pipe is connected, and FIG. 3 is a partial cross-sectional view of the socket body alone in FIG. 1, FIG. 4 is a partial cross-sectional view of the connector main body in FIG. 1, and FIG. 5 is a view corresponding to FIG. 6 is a cross-sectional view of FIG. 5B-B, FIG. 7 is a perspective view of a single socket body of FIG. 5, FIG. 8 is a perspective view of a single socket body of another embodiment, and FIG. FIG. 10 is a perspective view of a socket body alone according to still another embodiment, wherein (1) is a connector body, and a resin tube (not shown) protruding from the tip side inside the shaft core. A small-diameter chamber (3 ') and a large-diameter chamber (3) having a diameter expanded from the through hole (4) of the connecting cylindrical wall (2) for insertion are provided so as to penetrate the small-diameter chamber portion. A pair of notch grooves in which an elastic seal ring member (6) made of a rubber material or a resin material and a cylindrical annular bush member (7) are provided and which are formed in opposing portions formed by the peripheral wall of the large-diameter chamber (3) A tongue-like wall (1 ″) that protrudes forward in the (1 ′) portion and has a resilient function in the radial direction is integrally formed, and the notch groove is substantially U-shaped when viewed from the plane. It is what you make.
[0008]
Further, (5) is a socket body made of a metal material or a resin material, and a pair of claw walls (5 ') provided with a groove portion (9) in the longitudinal direction on the outer side so as to face the tip side of the socket body. And projecting in a continuous manner by a belt wall (8) having a state in which the groove portion (9) is engaged with the tongue-like wall portion inside the tongue-like wall (1 ″). It is polymerized to form a thick wall and assembled.
[0009]
Then, the annular bulging wall (P ′) of the pipe (P) to be connected is elastically pressed by the claw wall (5 ′), and the left and right rear end edges formed by the groove (9) are tongue-like walls. It is configured to be hung on the (1 ″) annular base portion (1 ″ ′) and to be installed inside.
[0010]
Further, in another embodiment shown in FIG. 9, (10) is an outward projecting wall provided at the tip of the tongue-like wall (1 ″), and the engagement pressure is released at the bulging wall (P ′). Sometimes, the nail wall (5 ') is opened by pinching the projection wall.
[0011]
If desired, as shown in FIG. 1, the rear end portion of the socket body (5) is projected outward from the rear end edge portion formed by the annular base portion (1 ″ ′) of the connector body (1), and the nail wall ( At the time of releasing the engagement pressure in 5 '), the projecting portion can be squeezed inward to release the same easily.
[0012]
【The invention's effect】
As described above, the connector device for small-diameter pipe connection according to the present invention has a thickness in which the groove portion (9) of the socket body (5) is engaged with the tongue-like wall (1 ″) portion on the connector body (1) side. The socket body (5) has a tough polymerized structure that is formed into a flesh and a structure in which the left and right rear ends of the groove (9) are supported on an annular base (1 "') formed by a tongue-like wall (1"). The assembling operation is extremely easy and troublesome, and in the rotation direction due to loosening of the engagement pressure on the bulging wall (P ′) of the pipe (P) by the claw wall (5 ′) over a long period of time. It can be strong and reliable without the fear of misalignment, and the entire connector can be compact so that it can be easily installed in a scooping place without any hindrance. 1) It can be easily pulled out when the pipe (P) is released from A connector device for a useful small-diameter piping connection Te order.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a small-diameter pipe connection connector device according to an embodiment of the present invention, with a part cut away when the pipe is connected.
FIG. 2 is a sectional view taken along line 1A-A in FIG.
3 is a partial cross-sectional view of the single socket body of FIG. 1;
4 is a partial cross-sectional view of the connector main body alone in FIG. 1. FIG.
FIG. 5 is a view corresponding to FIG. 1 according to another embodiment.
6 is a cross-sectional view taken along line 5B-B in FIG.
7 is a perspective view of a single socket body of FIG. 5. FIG.
FIG. 8 is a perspective view of a socket body alone according to another embodiment.
FIG. 9 is a view corresponding to FIG. 1 according to still another embodiment.
FIG. 10 is a perspective view of a socket body alone according to still another embodiment.
FIG. 11 is a partially cutaway cross-sectional view of a connector device for connecting a small diameter pipe showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Connector main body 1 'Notch groove 1 "Tongue-like wall 1"' Annular base 2 Connecting cylinder wall 3 Large diameter chamber 3 'Small diameter chamber 4 Flow hole 5 Socket body 5' Claw wall 6 Elastic seal ring member 7 Bush member 8 Band Wall 9 Groove 10 Projection wall P Piping P 'Swelling wall

Claims (3)

A connector body (1) formed by penetrating a small-diameter chamber (3 ') and a large-diameter chamber (3) having an enlarged diameter connected to the flow hole (4) of the connecting cylindrical wall (2) on the distal end side inside the shaft core. An elastic seal ring member (6) and a cylindrical annular bushing member (7) are installed in the small-diameter chamber portion of the small-diameter chamber portion, and a notch groove (1 ') drilled in an opposing portion formed by the peripheral wall of the large-diameter chamber (3). ) Part is integrally provided with a tongue-like wall (1 ″) projecting forward and having a resilient function in the radial direction, and is connected to the inside of the tongue-like wall so as to face the tip side. The claw wall (5 ') that is elastically pressed against the annular bulging wall (P') of the pipe (P) and overlaps with the tongue-like wall (1 ") is connected to the side wall by the belt wall (8). The protruding socket body (5) is inserted into the tongue-like wall (1 ″) on the connector body (1) side in the longitudinal groove (9) provided in the claw wall (5 ′) portion in the overlapping portion. The left and right rear edges of the groove (9) are engaged with the annular base (1 "') formed by the tongue-like wall (1") and are mounted in the connector body (1). A connector device for connecting small-diameter pipes. The small diameter according to claim 1, characterized in that the rear end portion of the socket body (5) is formed to protrude outward from the rear end edge portion formed by the annular base portion (1 "') of the connector body (1). Connector device for pipe connection. 2. A connector device for connecting a small-diameter pipe according to claim 1, wherein the tongue-shaped wall (1 ″) is formed with an outwardly projecting wall (10) at a tip portion thereof.

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