JPH02278095A - Disposing coupling structure between small metallic pipe and flexible hose - Google Patents

Abstract

PURPOSE:To effect a connection work through one action by a method wherein a seal ring member inserted externally of the out peripheral surface of a joint is inserted in a metallic pipe, and the claw wall part of a resilient arm wall is resiliently hooked to the protrusion wall of a joint. CONSTITUTION:A joint 1 provided on both end sides with cylinder walls 3 and 5 and at an intermediate part with a projection wall 4 has the cylinder wall 3 to which a seal ring member 3' is mounted. A holding tool 6, e.g. a metallic spring, is assembled through a core through-hole 6' to the cylinder wall 3 of the joint 1. An engaging wall 7 of the holding tool 6 is brought into contact with a flange wall P2 part at the tip of a metallic pipe P, and the cylinder wall 3 is inserted in the metallic pipe P in a manner to press the sealing member 3'. Claw walls 8a and 8a' of resilient arm walls 8 and 8' are resiliently hooked to a protrusion wall 4 of the joint 1, and a flexible hose H is inserted in a cylinder wall 5 part for connection. This constitution enables facilitation of a connection work even at a limited placed, and execution of re-connection after disassembly without any trouble.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention generally relates to pipes with a diameter of 20m/20m installed as oil supply and air supply channels for automobiles or various machines and devices.
The present invention relates to a quick connection structure between a metal tube having a relatively small diameter of about 1.5 m or less and a flexible hose such as a resin tube or a rubber hose, and in particular to an improvement in a one-touch arrangement and connection structure that can be removed as necessary. .

[Prior Art] Conventionally, as shown in FIG. 12, for example, as shown in FIG. 12, this type of arrangement and connection structure has a structure in which a circulation hole (12) is provided penetrating through the inside of the shaft, and one end is provided with a circulation hole (12) with the front surface as a seat surface. Screws on the surface (13)
and a cylindrical wall (15) protruding from the other end side to form a joint (11).
When connecting, the flare wall (P1) at the tip of the metal tube (P'') is brought into contact with the seat surface and tightened by screwing with a nut (14). The flexible hose (+1') was inserted into the cylindrical wall (15) of the tube, and the hoses were connected by tightening the ring member (16) by caulking or the like.

[Problems to be Solved by the Invention] However, in such a conventional arrangement and connection structure, tightening at one end not only causes troublesome connection work due to the screwing work with the nut (14). In particular, assembly is carried out on a production line, and it is difficult to maintain a constant force when tightening the metal pipe (P"), which often causes leaks due to uneven tightening. Furthermore, the coupling (11) and the metal tube (Po
), it is difficult to attach and detach, and it is difficult to connect in narrow spaces.It also requires tools such as spanners, which slows down the work. This method had problems such as requiring tools such as -.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to quickly, reliably and easily perform the connection work in a one-touch manner, reducing the troublesome work, and providing a connecting part The hanging force is kept almost constant, eliminating concerns about leakage, and since no tools are required for connection, it is easy to connect in tight spaces, and at the same time, assembly can be done smoothly on assembly lines, etc. The object of the present invention is to propose an arrangement and connection structure that can be used repeatedly without any trouble even when reconnecting after disassembly at the connection part.

[Means for Solving the Problems] In order to achieve the above object, the present invention has a communication hole penetrating through the shaft core, cylindrical walls protruding from both ends, and a protruding wall extending outward at the middle portion. A seal ring member is installed in the annular groove provided on the outer circumferential surface of the one four-cylindrical wall of the joint, and a retainer comprising an engagement wall and a plurality of elastic arcs and walls extending in the axial direction connected thereto is attached. At the same time, the engaging wall on the holder side is brought into contact with the outward flange wall provided at the tip of the metal tube, and the inner circumference of the one cylinder wall is attached to the metal tube. The seal ring member is inserted so as to be pressed by the surface, the claw wall portion extending radially from the elastic arm wall is elastically supported on the protruding wall portion of the joint, and the claw wall portion on the other side is flexible. The gist is an arrangement and connection structure of a flexible hose and a small diameter metal tube, each of which is connected by inserting a hose, and an enlarged diameter wall is provided following the alligator wall of the metal tube,
The elastic arm wall is formed in an abbreviated, U-shaped, or U-shape that connects to the engagement wall, or is provided integrally protruding outward in the axial direction from the tip of the claw wall portion of the elastic arm wall. Alternatively, the arm wall may be provided with a locking claw facing inward in the axial direction, the tip of which is locked to the collar wall, and the retainer may be made of a metal spring material or a resin material. or made of rubber material,
Further, the flange wall of the metal pipe and the protrusion wall of the joint are provided with unevenness on their opposing surfaces so as to be engaged with each other, and a locking block member provided on the outer periphery of the protrusion wall of the joint, and a retainer that is locked by the block member. Free rotation of the holder and the joint is prevented by providing relative free rotation prevention means consisting of a claw wall of the tool.

[Function] Since the present invention is configured as described above, the seal ring member is pressed by the inner peripheral surface of the metal tube into which the joint is inserted, and the end of the metal tube is elastically held by the holder. Since the connection is made by supporting the elastic arm of the holder and hooking it onto the protrusion wall when opening the elastic arm on the wall side, the connection work can be done quickly and easily with one touch, thereby reducing the hassle of work. In addition, it prevents the relative free rotation of the holder, metal pipe, and joint to securely hold the connection, and furthermore, the hanging force at the connection part is kept almost constant, reducing the risk of leakage. In addition, connection work in narrow spaces is facilitated by eliminating the need for connection tools, etc., and assembly can be carried out smoothly on assembly lines, etc., and furthermore, after disassembly at the connection part, Even when reconnecting, it can be repeated without any problem.

It will be possible to use it.

[Example] Hereinafter, embodiments of the present invention will be described based on the drawings. Fig. 1 is a partially cutaway diagram showing an embodiment of the arrangement and connection structure for a thin metal pipe and a flexible hose according to the present invention. 2 is a side view of the holder shown in FIG. 1, FIG. 3 is a perspective view of FIG. 2, and FIG. 4 is a partial cross section of another embodiment of the arrangement and connection structure of the present invention. 5(a) and 6(a) are partially enlarged cross-sectional views of the pond embodiment, FIG. 5(1)) and FIG. 6(b), respectively.
5(a) and 6(a), respectively, are partially cutaway perspective views of the holders used in FIG. Figure 9(a) and (b)
) is a perspective view illustrating the operation of still another embodiment, FIG. 10 is a perspective view of still another embodiment, and FIG. 11(a) is a partially enlarged sectional view showing the locked state of the embodiment shown in FIG. , Figure 11 (b
) is a similar diagram showing another example of FIG. 11(a),
(1) is a joint made of a metal material, in which a communication hole (2) is provided through the shaft core, and a seal ring member ( 3) and a cylindrical wall (5) protruding from the other side, and an annular protruding wall (4) extending outward at approximately the middle of both cylindrical walls (3, 5). ) is provided. (6) is the axis through hole (6
A holder made of metal spring material, resin material, rubber material, etc., which is assembled into the cylindrical wall (3) side of one side of the joint (1) with the " Engagement wall (7)
and a plurality of (a pair of elastic arm walls in the illustrated embodiment) elastic arm walls (8, 8' in the illustrated embodiment) extending in the axial direction and extending in the axial direction.
), and the arm wall (8, 8')
The bent portions extending in the radial direction are formed as claw walls (8a, 8a').

(9) is the claw wall (8a) of the elastic arm wall (8, 8').

Insert the fitting (1) into the metal pipe (P) using the maneuvering wall by finger pressure when opening the elastic arm wall (8, 8') integrally protruding outward in the axial direction from the tip of the part 8a'). Fittings (
It also serves as a guide for abutting and pressing the protruding wall (4) of 1) to release it. CP) is a metal tube,
A flange wall (P2) is provided at the tip end of the expanding diameter wall (Pd (see Figure 1)) extending outward, and when connecting, the inner peripheral surface of the expanding diameter wall (P1) Seal ring member (
3゛) to adhere, and with the engaging wall (7〉) on the side of the holder (6) in contact with the flange wall (P2), press the elastic arm wall (8, 8°). The claw walls (8a, 8a") are connected to the projecting wall (4) of the joint (1) by being elastically supported. (11) is connected to the cylindrical wall (5) on the other side. It is a flexible hose made of a resin tube or rubber hose that is inserted and connected.

Incidentally, as shown in Fig. 4, it is not necessary to provide the enlarged diameter part (P1) in the metal pipe CP), but if the enlarged diameter part (P1) is provided, the inner diameter of the flow hole (2) of the joint (1) will be increased. It can be made close to the inner diameter of the metal tube (P), and the flow path resistance can be reduced.

In addition, in order to facilitate the attachment and detachment of the holder (6) and improve the hanging force, the elastic arm walls (8, 8'') are provided with locking claws (8, 8'') facing inward in the axial direction, as shown in Fig. 4. 8b) is integrally provided,
This tip can also be locked to the collar wall (P2).

Next, FIGS. 5 and 6 show still another embodiment of the present invention, in which elastic arm walls (8, 8') are provided to facilitate attachment of the joint (1) to the holder (6). The fulcrum of the opening operation is shifted to the metal tube (P) side, and the elastic arm wall (8,
8') in the axial direction, and is formed into a substantially C-shape along with the engagement wall (7) in Fig. 5, and into a substantially U-shape in Fig. 6. .

Furthermore, when it is necessary to prevent the metal pipe (P) and the joint (1) from rotating relative to each other, the collar wall (P
2) and the projecting wall (4) of the joint (1) are formed with serrated uneven surfaces as shown in Fig. 7 so that they engage with each other, or the opposing surfaces are formed with a serrated surface as shown in Fig. 8. A concavo-convex surface consisting of concave grooves and protrusions extending in the radial direction at the same pitch and at the same interval is formed so as to engage with each other.

On the other hand, in order to prevent the holder (6) and the joint (1) from rotating relative to each other, as shown in FIG. 4) or fixed to the protruding wall (4), and the claw wall (8a) of the holder (6) is attached at the center
, 8a') for engaging the claw wall and having a width approximately equal to that of the groove (
10a) (only a single block member is shown in FIG. 9 for the sake of simplicity of the drawing), which rotate the joint (1) or retainer (6). By this, the claw walls (8a, 8a') engage with the grooves (10a) of the block members (10) and (7), thereby preventing relative rotation.

Moreover, the engagement block member (10) is not limited to the embodiment shown in FIG. 9, but is also formed in a U-shape having four parts (10b) in the same direction as shown in FIG. Projection (
10d), and by rotating the joint (1) or the holder (6), the four parts (10b
), the claw walls (8a, 8a') fit into the protruding parts (1
0d) in the mated position. In order to further ensure that the mating position is maintained, a hole (8b) is bored in the approximate center of the claw wall (8a, 8a') as shown in FIG. 11(b), and the above-mentioned grip Projection (1) of wall (10c)
0d) can also be configured to fit into this hole (8b).

Further, in order to prevent the metal pipe (P), the joint (1) and the holder (6) from freely rotating with respect to each other, the embodiments shown in FIGS. 7 to 11 may be combined as appropriate.

``Effects of the Invention'' As explained above, the arrangement and connection structure of the thin/diameter metal tube and the flexible hose according to the present invention is such that the end on the metal tube (P) side is connected to the engagement wall (6) of the holder (6). 7) Metal tube (P) in contact with
The seal ring member (3) inserted into the outer peripheral surface of the joint (1)
) is inserted so as to be pressed, and the claw walls (8a, 8a') of the elastic arm walls (8, 8') are elastically hung on the protrusion wall (4) of the joint (1) to connect. , Retainer when connecting (
6) The connection is made by hanging onto the protruding wall (4) when the opening is performed on the elastic arm wall (8, 8'...) side, making the connection work quick and easy with one touch. The holder (6), metal pipe (P), and joint (1)
), the relative free rotation of the parts is prevented, and the connection is held securely.Also, the hanging force at the connection part is kept almost constant, eliminating concerns about leakage, and there is no need for tools for connection. This makes connection work in narrow spaces easier, and assembly can be carried out smoothly on assembly lines, etc., and reconnection after disassembly at the connection part can be repeated without any problems. This is an extremely useful arrangement and connection structure between a small diameter metal pipe and a flexible hose.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway sectional view of an embodiment of the arrangement and connection structure of a silk, diameter metal pipe, and flexible hose, showing an embodiment of the present invention, and Fig. 2 is a holder shown in Fig. 1. side view, Figure 3 is the 2nd
FIG. 4 is a partial sectional view of another embodiment of the arrangement and connection structure of the present invention, and FIGS. 5(b) and 6(b) are partially cutaway perspective views of the holder used in FIG. 5(a) and FIG. 6(a), respectively. Fig. 8 is a plan view of still another embodiment with the holder removed, and Fig. 9 (
a) and (b) are perspective views for explaining the operation of still another embodiment, FIG. 10 is a perspective view of still another embodiment, and FIG.
) is a partially enlarged sectional view showing the locked state of the embodiment in FIG.
FIG. 1(b) is a similar view showing another example of FIG. 11(a), and FIG. 12 is a partially cutaway sectional view of the arrangement and connection structure showing a conventional example. (1)...Joint, (2)...Flow hole, (3)...
Cylinder wall, (3゛)...Seal ring member, (4)...Protrusion wall, (5)...Cylinder wall, (6)...Holder, (6゛)...Through hole, (7)...Engagement wall, (8, 8')...
... Elastic arm wall, (8a, 8a") ... Claw wall, (
9) ... maneuvering wall, (10) ... locking block member,
(P)... Metal tube, (P1)... Expanded diameter wall, (P2)
...Tsubabe, (formerly...flexible hose)

Claims (1)

[Claims] 1) A communication hole (2) is provided through the shaft core, and a cylindrical wall (2) is provided at both ends.
The seal ring member (3' ), and the holder (6), which has an engaging wall (7) and a plurality of elastic arm walls (8, 8') extending in the axial direction, is inserted into the axial through hole (6'). ) part and assemble the holder (6).
) side engagement wall (7) comes into contact with the outward flange wall (P_2) provided at the tip of the metal tube (P), and the one side cylindrical wall (3)
is inserted into the metal tube (P) so as to press the seal ring member (3') with its inner circumferential surface, and claw walls (8a, 8a,
8a') is elastically hung on the protruding wall (4) of the joint (1), and a flexible hose (H) is inserted into the cylindrical wall (5) on the other side to connect them. A connection structure between a small diameter metal tube and a flexible hose. 2) In claim 1, the flange wall (
An arrangement and connection structure for a thin metal tube and a flexible hose, characterized in that an enlarged diameter wall (P_1) is provided next to P_2). 3) In claim 1, the elastic arm wall (8, 8
') is an arrangement and connection structure of a small diameter metal tube and a flexible hose, characterized by being formed in a substantially L-shape, U-shape, or U-shape connected to the engagement wall (7). 4) The elastic arm wall (8, 8) according to claim 1, wherein the elastic arm wall (8, 8
An arrangement of a small diameter metal tube and a flexible hose characterized by having a maneuvering wall (9) that integrally projects outward in the axial direction from the tip of the claw wall (8a, 8a') of the Construction connection structure. 5) In claim 1, the elastic arm walls (8, 8
') is provided with a locking claw (8b) facing inward in the axial direction, and its tip is locked to the collar wall (P_2). structure. 6) The arrangement and connection structure of a small diameter metal pipe and a flexible hose according to claim 1, wherein the holder (6) is formed of a metal spring material, a resin material, or a rubber material. 7) In claim 1, the flange wall (
P_2) and the protruding wall (4) of the joint (1) are provided with unevenness on their opposing surfaces and are engaged with each other. 8) In claim 1, the retainer (6) and the joint (
1) An arrangement and connection structure for a thin metal tube and a flexible hose, characterized in that a means for preventing free rotation relative to the tube is provided. 9) In claim 8, the free rotation prevention means includes a locking block member (10) provided on the outer periphery of the protruding wall (4).
) and a claw wall (8a, 8a') of a holder (6) that is locked by the block member.