JPS6315669Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a coupler device suitable for use as a joint for an air hose.

A detachable coupler is used as a male and female joint member for a joint such as an air hose.

However, when such a coupler is used, for example, as a joint for an air hose that supplies and exhausts air to a vehicle height adjustment suspension,
Air hoses are often installed in hidden locations, and coupling and disengagement of the coupler may be performed in locations where it is difficult to visually inspect the coupler with the fingertips due to the working posture, so easy and reliable engagement and disengagement are required.

The present invention has been made in view of the above, and its purpose is to provide a female coupler having a plurality of arm portions in the axial direction on the outer periphery, and having an inward claw piece at the tip of the arm portion; It consists of a male coupler having a large diameter main body that engages with the claw piece at its rear end step, and around the main body of the male coupler, a chevron-shaped guide slope with a bulging middle part in the axial direction is radially spaced apart. A plurality of couplers are provided, and the space between the guide slopes is a flat arc surface in the axial direction, and by relatively rotating the male and female couplers in the engaged state, the arm part is expanded on the guide slope, and the arm part is expanded in the axial direction. To provide a coupler device in which both parts can be separated by movement, and the coupler attachment/detachment operation can be easily and reliably planned even in a place where it is difficult to visually observe the coupler attachment/detachment operation.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an exploded perspective view of the coupler device, and the coupler consists of a female coupler 1 and a male coupler 11.

The female coupler 1 has a cylindrical main body 2 in the center, the outer periphery of the tip 2a is formed into a male tapered shape, and the base 2b is integrally formed with a disk-shaped flange 3 extending in the radial direction. A drum part 4 having a large diameter in the axial direction is formed on the outer periphery of the part 3 so as to surround the outer periphery of the base part of the main body 2 at a distance therefrom. Inner diameter part 2c of main body 2
A protruding ring portion 5 is provided, and an end inner diameter portion 5a of the protruding ring portion 5 is formed into a female taper shape.

The above coupler 1 is spaced radially forward from the tip 4a of the drum portion 4 at equal intervals, e.g.
The arm portions 6 are extended every 90 degrees, and the arm portions 6 are provided to protrude an appropriate length forward of the main body 2, and have inner and outer diameter portions on the extension of the drum portion 4. Each of the arms 6 is provided with a claw portion 7 projecting in the inner diameter direction, and the tip portion 7a of the claw portion 7 is formed as a tapered surface in the inner diameter direction and axially rearward. The above coupler is integrally molded from synthetic resin or the like, and the arm portions 6 are flexible in the radial direction.

The male coupler 11 has a large-diameter main body 12 having a circular recess 12a opening at the large-diameter tip that fits into the outer periphery of the main body 2 of the female coupler 1, and a cylindrical main body 12 that protrudes rearward from the center of the rear end of the base thereof. A protruding ring portion 13 is provided, and an inner diameter portion 13a of the protruding ring portion 13 is connected to a recess 12a of the main body 12.
A locking wall 14 in the shape of a ring flange is opened and communicated with the central portion of the rear end 12b, and is provided between the rear end of the main body 12 and the tip of the protruding ring portion 13 so as to be perpendicular to the axis. The outer periphery 15 of the tip of the main body 12 is formed in a tapered male taper shape, and the engagement surfaces 16 are flat in the axial direction at equal intervals in the circumferential direction, for example, every 90 degrees over a predetermined angle, in the middle part or the rear part. The width of the engaging surfaces 16 in the circumferential direction is set to be slightly larger than the widths of the arm portion 6 and the claw portion 7.

Engagement surface 16...There is a chevron-shaped guide slope between which the central part in the axial direction protrudes most outward in the radial direction, and the diameter of the front and rear parts decreases sequentially in the front and rear direction, and merges with one of the adjacent engagement surfaces. 17... are provided at equal intervals of 4 pieces at 90° intervals. A stopper 18 having an arcuate cross-section or the like is provided at the front of the boundary surface between the engagement surfaces 16 and the guide slope 17 which is inclined in the radial direction in the circumferential direction. Then, on the circumferentially opposite side of the engagement surface 16 where the guide slope 17 joins and adjoins, a regulating piece 19 is provided respectively, and the regulating piece 19 extends radially outward from the circumferential end of the guide slope 17. stand up On the other hand, at the front end of the guide slope 17, a planar V-shaped guide portion 20 is provided on the tapered tip circumferential surface 15 of the main body 12, so that the tip of the engagement surface 16 has a female taper shape in the circumferential direction. An expanded guide wall 20a will be provided.

Next, to explain its action and effect in detail, coupler 1,
Air hoses 21, 2 are attached to the inner diameter parts 2c, 13a of 11.
2, a recessed large diameter part 22a is formed at the inner diameter part of the tip of one air hose 22, and a pressure locking flange part 21a is formed downstream of the abutting tip part of the other air hose 21. The main bodies 2 and 12 are connected to the recessed part 12
a, an O-ring 23 is interposed between the tip end and the flange part 21a, and the recessed large diameter part 22a is fitted.
Fit the tip of the flange portion 21a into the coupler 1,
11 pressurizes the O-ring 23 in the axial direction and connects the hoses 21 and 22 while sealing. The fitting of the main body 2 into the recess 12a of the main body 12 is as follows.
Since the tip portion 2a is formed in a male tapered shape, it can be easily and reliably guided.

However, the engagement of the couplers 1 and 11 is performed by bringing them together in the axial direction, and first, the claw portion 7 at the tip of the arm portion 6 is engaged.
is in contact with the tapered tip peripheral surface 15 of the front end of the main body 12,
Since the claw portion 7 has a tapered tip portion 7a, it moves in the axial direction while being guided by the tip portion 7a, and the arm portion 6 bends outward in the radial direction. Thereafter, it advances along the engagement surface 16, the claw portion 7 passes the rear end of the engagement surface, the claw portion 7 returns to the closing direction due to its elasticity, and the inner end 7b of the claw portion 7 engages with the locking wall 14. and the arm part 6 is locked.
The inner diameter surface 6a of is in close contact with the flat engagement surface 16. Even if the claw part 7 is displaced in the circumferential direction with respect to the engagement surface 16, it will be guided by the V-shaped guide part 20 and move toward the engagement surface, so that it will be moved in a manner that pushes both of them in the axial direction. By bringing them together, the arm portion and the claw portion are forcibly and naturally guided to the engagement surface.

The engaged state is shown in FIGS. 8 to 10, which are sectional views taken along lines 8-8 to 10-10 of the explanatory end view of FIG. 7 showing the engaged state.

When the couplers 1 and 11 try to rotate in the circumferential direction due to vibration or the like in the engaged state, one side end of the arm portion 6 is restricted by a restriction piece 19 on one side in the circumferential direction, and the rotation in this direction is prevented. be prevented. Rotation in the other direction is restricted by a stopper 18 at the other end of the arm portion 6, and it is impossible to overcome the stopper with the rotational force caused by vibration, and rotation in this direction is prevented.

By the way, when the couplers 1 and 11 are removed, the couplers 1 and 11 are rotated. When the couplers 1 and 11 rotate in opposite directions, the side end of the arm portion 6 on this side hits the side surface 19a of the regulating piece 19 on this side and is prevented. When rotated in the forward direction, the arm portion 6 faces the guide slope 17 over the stopper 18, and since this 17 is chevron-shaped, the arm portion 6 expands and bends outward in the radial direction, and the claw portion 7 expands. It is opened and removed from the locking wall 14. This is shown in FIGS. 12 and 13. Further rotation in the forward direction causes the side end of the arm portion to come into contact with the side surface 19b of the regulating piece 19 that stands up from the slope 17, and further rotation is prevented. That is, it is prevented from climbing over the slope and engaging with the next engagement surface in the rotational direction.

In this state, by moving the couplers 1 and 11 in the direction of separating them in the axial direction, the claw portions 7 can be removed while being expanded.

By rotating and pulling out in this manner, disengagement and removal can be easily performed.

As is clear from the above, according to the present invention, the male and female couplers are naturally and forcibly guided and engaged only by movement in the axial direction, and the engagement is also performed firmly and reliably by the claws. Disengagement can be done reliably and easily by rotating both sides and pulling out in the axial direction without naturally expanding the claws and re-engaging, making it difficult to visually inspect and allowing work to be done using only the fingertips. Easy to engage even in
It has many advantages, such as being able to release the coupler, preventing rotation of both couplers in the engaged state, preventing disengagement, and achieving the above with a simple structure.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is an exploded perspective view of the coupler, Fig. 2 is a side view of the female coupler, Fig. 3 is a plan view of the same, Fig. 4 is an end view of the same, and Fig. 5
The figure is a sectional view taken along the line 5-5 in Fig. 2, and Fig. 6 is a sectional view taken along the line 6-5 in Fig. 4.
7 is an explanatory end view showing the relationship between the arm portion and the female coupler when the male coupler is coupled, FIG. 8 is a sectional view taken along the line 8-8 in FIG. 7, and FIG. 9-9
10 is a sectional view taken along the line 10-10 of FIG. 7, FIG. 11 is a sectional view taken along the line 11-11 of FIG.
2 is a cross-sectional view of the arm claw in an expanded state, and FIG. 13 is a cross-sectional view taken along the line 13-13 in FIG. 12. In the drawing, 1 is a female coupler, 6 is an arm, 7 is a claw,
11 is a male coupler, 14 is an engagement step, 16 is an engagement surface, 17 is a slope, 18 is a regulating wall, 19 is a stopper, and 20 is a guide portion.

Claims (1)

[Claims for Utility Model Registration] (1) A female coupler having a plurality of arms arranged radially in the circumferential direction and having a claw at the tip that is flexible in the radial direction and extending in the axial direction, and a female coupler that is engaged with the claw. The proximal end has a mating stepped portion, the cylindrical engagement surface is radially provided in the circumferential direction, and the engagement surface is flat in the axial direction. A male coupler comprising a male coupler which bulges out in the radial direction and has a continuous chevron-shaped guide slope at one end in the circumferential direction of an engagement surface. (2) The coupler device according to claim 1 of the utility model registration claim, wherein a regulating wall protruding in the radial direction is provided at the other circumferential end of the guide slope. (3) The coupler device according to claim 1 of the above-mentioned utility model registration, further comprising a guide portion that guides the claw of the female coupler in the direction in which the claw enters the guide slope. (4) The coupler device according to claim 1 of the above-mentioned utility model registration, further comprising a stopper projecting radially outward in the vicinity of the boundary between the engagement surface and the guide slope.