JP3129513B2 - Small-diameter piping connector - Google Patents

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, which is generally used as a pipe for supplying oil and air to an automobile 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 a pipe).

[0002]

2. Description of the Related Art Conventionally, as a connection connector of this type, as shown in FIG. 11, for example, an annular support at the center of a shaft center is provided on a hanging wall (21 ') of a rear end peripheral portion formed by a connector body (21). Wall (2
3 "'), a pair of claw walls (23') which are located at the front in the assembling direction and which are inclined forward, and a rear ear-shaped wall (2
The socket member (23) made of an elastic body projecting from 3 ") is assembled into the assembly chamber (22) by the tip of the claw wall (23 ') in a state where the concave groove portion of the middle part is engaged. The bulging wall (Po ') near the connection of the pipe (Po) is resiliently engaged and connected, and the release is performed by artificially narrowing the knob-like ear wall (23 "). Was configured as follows.

[0003]

However, in such a conventional technique, in the socket member (22), the ear-shaped wall (23 ") is connected to the connector body in a state where the pipe (Po) is incorporated. Since it protrudes outward from the hanging support wall (21 ') formed by (21), it is often engaged due to artificial contact with the ear-like wall during transportation or installation, or interference with other parts. The attachment portion is displaced and the pipe (Po) is detached, and the elastic member made of a resin material snaps on the socket member (23) and the relatively long claw wall (23 '). The resilient engagement structure at the bulging wall (Po ') due to the function makes it easy to cause "severing" at the claw wall (23'), while the engaging structure at the concave groove at the middle of the claw wall (23 '). Wear and deformation due to repeated attachment / detachment or aging of the concave groove portion may cause "rattle" in the engagement, and the bulging wall ( o ') engagement force in the part there is a problem that the lack of equal, reliability without unstable long-term to over connection to decrease.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and eliminates any external contact with a hook and a displacement at a bulging wall portion caused by the external contact. Displaced elastically inward and outward,
Moreover, a set of C-shaped or divided single members loosely attached to the engagement holes, a plurality of claw pieces attached to the annular elastic body and loosely attached, or a single member loosely attached to the rear end of the connector body or the like By using a compact hanging bracket, it is possible to eliminate the worries such as abrasion and deformation of the engaging hole and "striking" of the hanging bracket, and to provide a highly reliable and highly reliable connection for a long time. An object of the present invention is to propose a small-diameter pipe connection connector.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a stepped small-diameter chamber and a stepped large-diameter chamber which are connected to a flow hole of a connecting cylinder wall on the distal end side and are expanded inside a shaft core. A cylindrical connector body having an engaging hole communicating with the inside of a peripheral wall portion of the large-diameter chamber, an elastic seal ring member and a bush member inserted into the small-diameter chamber portion. A spring member attached to the outer peripheral side near the base of the connecting cylinder wall by a locking ring, a hooking member made of an elastic body loosely attached to the engaging hole, and a tip end side pressed against the spring member. The engagement and disengagement at the annular bulging wall portion near the connection on the pipe side in the attachment chamber is connected to the body wall which is moved in the axial direction and presses the hooking device inward and releases it outward. The connector body having an opening wall at the rear end portion and attached to the connector body, Configure the small-diameter piping connection connector,
A cylindrical connector body penetrating an assembly chamber including a stepped small-diameter chamber and a stepped large-diameter chamber that are expanded inside the shaft core in connection with the flow hole of the connecting cylinder wall on the distal end side; An elastic seal ring member and a bush member inserted into the chamber,
A spring member mounted on the outer peripheral side near the base of the connecting cylinder wall by a locking ring, a hook loosely attached to a rear end of the connector main body, and a front end side pressed against the spring member to assemble the chamber The engagement and disengagement at the annular bulging wall portion near the connection on the piping side is performed by moving in the axial direction and displacing the hanging support inward and outward, and the rear end side has a U-shaped cross section. Each of the small-diameter pipe connection connectors includes an inner wall provided on the connector body as a tongue-shaped wedge wall interposed between the respective loosened portions formed by the hanging members, and a superposed cylindrical holding member. The engaging hole is further provided in a C-shaped or divided long hole along the peripheral surface, and the hook is loosely attached to the engaging hole in a C-shaped or divided set. Or a plurality of engagement holes. Is provided on, the hanging 支具 is to or constituted by a plurality of pawls that Yurugi the respective engaging hole attached to the annular elastic member.

[0006]

Since the present invention is constructed as described above, the hook is pressed and released by the axial movement of the tubular holder which is attached to the connector body and is superimposed on the connector. Since the engagement and disengagement at the bulging wall is performed, external contact with the hanging member loosely attached to the connector main body and displacement of the bulging wall portion due to the external contact can be completely eliminated. And the engaging and displacing elastically outwardly, and the engaging hole or the compact supporting member which is loosely attached to the rear end of the connector body. It is possible to eliminate the worries such as "striking", and to connect safely and securely for a long period of time, thereby improving reliability.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a connector for connecting a small-diameter pipe according to the present invention, and FIG. FIG. 3 is a state diagram before connection of FIG. 2, FIG. 4 is a state diagram at the time of connection by moving the holder of FIG. 2, and FIG.
FIG. 6 is a sectional view taken along line AA, FIG. 6 is a sectional view taken along line 4B-B, FIG.
FIG. 8 is a cross-sectional view of an enlarged view of the hanging support of FIG. 7 according to another embodiment, FIG. 9 is an equivalent view of FIG. 2 according to still another embodiment, and FIG. FIG. 3 is an enlarged cross-sectional view of a support unit alone, wherein (1) is a connector body, and a connecting tube wall such as a resin tube or a rubber hose on a tip side is provided inside a shaft core.
An assembling chamber (3) consisting of a stepped small-diameter chamber (3 ') expanded along with the flow hole (4) of (2) and a stepped large-diameter chamber (3 ") is provided in the rear part. And an engaging hole having a C-shaped cross section or a divided elongated hole or hole communicating with the inside of the peripheral wall portion of the large diameter chamber.
(1 '), and an elastic seal ring member (6) made of a rubber material, a resin material, or the like, and a bush member (7) engaged with a step portion of the small-diameter chamber are inserted into the small-diameter chamber (3'). It is what you wear.
A locking ring (1) is provided on the outer peripheral side near the root of the cylindrical wall (2).
0), a spring member (5) is attached to the engagement hole (1 '), and a hook member (5) made of an elastic body composed of a set of one-piece member divided into a C shape or an annular member made of a coil spring. A hook (5) with a plurality of claws (5 ') attached to the elastic body is loosely attached (see FIG. 8) to form. As shown in FIG. 9 and FIG. 10, even if the hanging member (5) is displaced loosely inward and outward to the rear end of the connector body (1) as a plurality of one-piece members (5 "). (8) is a superposed cylindrical holder which is attached to the outside of the connector body (1), and has an end threaded at one end in front of the connector body (1). Stop ring
An annular bulge provided near the connection of the pipe (P) in the assembly chamber (3) with the pressure applied to the other end of the spring member (9) in contact with the pipe (10). The wall (P ') is moved by the tension of the spring member (9) rearward in the axial direction, and the hanging support (5) is pressed inward by the body wall (8') and locked. Prior to these operations, the holder (8) is artificially moved forward against the tension of the spring member (9) during assembly or removal, so that the holder (8) can be moved from the body wall (8 '). It is displaced outward by the separating body and released. An opening wall (8 ") is provided at the rear end portion following the trunk wall (8 '), and is in an open state to fix the hanging member (5). In connection with the hook (5) shown in FIG. 9 as another embodiment, the rear end of the attached and superposed holder (8) is connected to the hook (5).
A tongue-shaped wedge wall provided on the inner wall of the same number and phase in a U-shape in section, and the wedge wall portion is interposed between the loose fitting portions of the respective members, and the axis of the holder (8) is The hook (5) is displaced inward and outward by moving in the direction to engage and disengage the pipe (P) at the bulging wall (P ').

[0008]

As described above, the small-diameter pipe connection connector according to the present invention is attached to the connector body (1), and is moved by moving the superposed cylindrical holder (8) in the axial direction. Press and release the support (5) to bulge the pipe (P) (P ')
Hanging device (5) to make it possible to engage and disengage with
At the bulging wall (P ') caused by the external contact and the displacement caused by the movement can be elastically displaced inwardly and outwardly, and furthermore, the engagement hole (1' ) Portion or the rear end portion, the compact shape of the hook (5) allows the engagement hole (1 ') to be worn and deformed and the hook (5)
It is a very useful small-diameter pipe connection connector that can eliminate the fear of "striking" in the above, and can be connected very safely and securely for a long time to improve reliability.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a connector for connecting a small-diameter pipe according to the present invention.

2 is a partially cutaway sectional view of the connector of FIG. 1 in a pipe connection state.

FIG. 3 is a state diagram before connection in FIG. 2;

FIG. 4 is a state diagram at the time of connection by moving the holder of FIG. 2;

FIG. 5 is a sectional view taken along the line AA in FIG. 3;

FIG. 6 is a cross-sectional view taken along the line BB of FIG. 4;

FIG. 7 is a diagram corresponding to FIG. 2 according to another embodiment.

FIG. 8 is an enlarged cross-sectional view of the hanging support of FIG. 7;

FIG. 9 is a diagram corresponding to FIG. 2 according to yet another embodiment.

FIG. 10 is an enlarged sectional view of the hanging support of FIG. 9;

FIG. 11 is a partially cutaway sectional view of a conventional small-diameter pipe connection connector in a pipe connection state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector main body 1 'Engagement hole 2 Connecting cylinder wall 3 Assembly room 3' Small diameter chamber 3 "Large diameter chamber 4 Flow hole 5 Hanging support 5 'Nail piece 6 Seal ring member 7 Bush member 8 Holder 8' Body wall 8 "opening wall 8" 'wedge wall 9 spring member 10 locking ring P pipe P' bulging wall

Claims (2)

(57) [Claims] 1. A stepped small-diameter chamber (3 ') and a stepped large-diameter chamber (3 ") having a diameter increased inside the shaft core in connection with a flow hole (4) of a connecting cylinder wall (2) on the distal end side. The large-diameter chamber is provided with an engagement hole (1 ') penetrating therethrough, and the small-diameter chamber (3') is provided with The elastic seal ring member (6) and the bush member (7) inserted, the spring member (9) mounted on the outer peripheral side near the base of the connecting cylinder wall (2) by a locking ring (10), and the engagement Hole
A hook (5) made of an elastic body loosely attached to the (1 ') portion, and further, the front end side is pressed against the spring member (9) to assemble the assembly chamber (3).
At the annular bulging wall (P ') near the connection on the pipe (P) side, and move in the axial direction to push the hook (5) inward and release it outward. Attached to the connector body (1) with an opening wall (8 ″) at the rear end following the trunk wall (8 ′)
A superposed cylindrical holder (8) , and the engagement hole
(1 ') is installed in a C-shaped or divided slot along the circumference.
And a C-shape for loosely attaching the hook (5) to the engagement hole.
To be configured as a single piece of shape or divided,
When the engaging hole (1 ') is provided in the shape of a plurality of holes,
Next, the engaging hole in which the hook (5) is attached to the annular elastic body is formed.
A small-diameter pipe connection connector comprising a plurality of claw pieces (5 ') loosely attached to each other . 2. A stepped small-diameter chamber (3 ') and a stepped large-diameter chamber (3 ") having an enlarged diameter connected to a flow hole (4) of a connecting cylinder wall (2) on the distal end side inside the shaft core. A cylindrical connector body (1) penetrating an assembly chamber (3) comprising: an elastic seal ring member (6) and a bush member (7) inserted into the small-diameter chamber (3 ').
A locking ring (10) on the outer peripheral side near the base of the connecting cylinder wall (2)
And a hook (5) loosely attached to the rear end of the connector body (1), and further, the front end side is pressed against the spring member (9) to assemble the assembly chamber (3). )
At the pipe (P) side, the engagement and disengagement at the annular bulging wall (P ') near the connection is moved in the axial direction to displace the hook (5) inward and outward. The rear end side to be performed has a U-shaped cross section, and the inner wall is adhered to the connector main body (1) as a tongue-shaped wedge wall (8 ″ ′) interposed between the respective loosened portions formed by the hooks (5). A small-diameter pipe connection connector, comprising: a cylindrical holder (8);