JPH0355036Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tube joint mounting device for mounting a tube joint to a fluid supply/discharge port in a fluid pressure device.

[Prior Art] In fluid pressure equipment, it is necessary to attach a tube joint for tube connection to the fluid supply/discharge port opened in the fluid pressure equipment. It is attached to fluid pressure equipment with screws so that it can be used for various purposes.

In addition, recently, bodies and tube joints of fluid pressure equipment have been made of materials such as synthetic resins, which are lightweight, inexpensive, and easy to mold, but bodies and tube joints are not as strong as metals. If the screws are made of a small material such as synthetic resin, there is a problem that their lifespan will be shortened due to wear and tear of the screws.

Therefore, in the past, metal was inserted and molded in advance around the port of a fluid pressure device or at the attachment part of a tube joint to the port, and the inserted metal was threaded after molding. Inserting or threading after molding is time-consuming and troublesome.

In order to solve this problem, it is conceivable to attach the fluid pressure equipment and the tube joint using a bayonet joint, but even in this case, since the fluid pressure equipment is attached to the fluid pressure equipment by the rotation of the tube joint, the installation It is cumbersome to operate.

[Problems to be Solved by the Invention] The present invention aims to make it extremely easy to attach and detach the tube fitting when removably attaching the tube fitting to the port by engaging the port of the fluid pressure device and the tube fitting. It is a problem that we are trying to solve.

[Means for Solving the Problems] The present invention provides a mounting device for a tube joint comprising a fluid pressure device having a port for supplying and discharging pressure fluid, and a tube joint that can be attached to and detached from the port. , providing a plurality of radial through holes with one end opening to a port and the other end opening to the outside,
The tube joint is composed of a joint body having a tube mounting portion, and an adapter that is loosely fitted to the outer periphery of the joint body and cannot be pulled out, and the adapter has a plurality of slits that are open at the bottom so that the adapter can be pushed into the port. The above problem is solved by forming a plurality of elastic walls and providing an engaging collar portion that engages with the through hole on the outer periphery of the plurality of elastic walls facing the through hole. .

[Function] The plurality of engagement flanges provided on the elastic wall of the adapter,
When placed above the opening of the through-hole in the body and pushed into the port, the engaging flange contracts in diameter due to the elasticity of the elastic wall, then returns to its original diameter and engages with the through-hole, allowing the tube joint to enter the port. mounted on.

When the body of the fluid pressure equipment and the tube fitting are rotated relative to each other, the engaging collar part contracts in diameter due to the elasticity of the elastic wall, slips out of the through hole, and comes into contact with the inner peripheral surface of the port, so that the tube fitting is removed from the port. It can be extracted.

Therefore, it is extremely easy to attach and detach tube fittings to and from ports, and there is no need for complicated steps such as metal inserts, and fluid pressure equipment and tube fittings can be made of low-strength materials such as synthetic resin. can be formed.

In addition, since the engaging part on the port side is formed with multiple radial through holes that open to the port at one end and to the outside, the other end opens to the outside. It can be formed by means.

[Embodiment] The drawings show an embodiment of the present invention, and this tube joint mounting device includes a fluid pressure device and a tube joint 3 that is removably attached to a port 2 opened in a body 1 of the fluid pressure device. ing.

As shown in FIG.
A pair of through holes 6, 6 are opened in the peripheral wall above the bottom surface of the port 2, facing each other in the radial direction of the port 2, with one end opening in the peripheral wall and the other end opening outside the body 1, respectively. The through holes 6, 6 form a pair of engaging portions 7, 7 that engage with the engaging flange portions of the tube joint 3, which will be described later, and the opening of the stepped portion 5 above the through holes 6, 6. Tapered surfaces 8, 8 having a large diameter on the opening side are formed on the sides.

The tube joint 3, as shown in FIG.
The above-mentioned joint body 1 includes a joint body 10 and an adapter 11 that is loosely fitted on the outer periphery of the joint body 10 so that it cannot be pulled out in the axial direction.
0 includes a fitting part 14 which is airtightly fitted into the port 2 by a packing 13 fitted to the outer periphery, and a tube fitting part 1 having a larger diameter above the fitting part.
5, and a fluid flow path 16 opened in the axial direction of these
Flanges 17a and 17b are formed on the outer periphery of both axial ends of the tube attachment portion 15, and the lower flange 17b is formed to be loosely insertable into the step portion 5.

As shown in FIGS. 3 and 4, the adapter 11 has a knob part 19 and a cylindrical part that can be pushed into a stepped part 5 extending downward from the knob part, and the cylindrical part has an open bottom end. The engaging flange portion is divided into a plurality of elastic walls 21 by a plurality of slits 20, and is loosely fitted into the port side opening of the through hole 6 on the outer periphery of the lower end of the pair of opposing elastic walls 21, 21. 22 is integrally formed, and a tapered surface 23 whose diameter is reduced on the lower side is provided on the outer periphery of the lower end of the engaging flange portion 22. Further, on the inner circumferential surface of the knob portion 19, locking protrusions 24, which engage with the flange 17a, are formed facing each other, and the adapter 11 has a locking protrusion 24, which engages with the flange 17a and the adapter 11. Due to the engagement between the flanges 22, 22 and the flange 17b, the joint body 10 cannot be pulled out in the axial direction.
It is assembled into.

Further, a guide 26, a collet 27, a chuck 28, and a release button 29 are fitted in order toward the center of the fluid flow path 16 in the tube mounting portion 15, and the chuck 28 made of a metal plate is attached to the fitting portion. The tube 30 has a plurality of slits on the 14 side, and a plurality of locking pawls 28a that lock onto the outer periphery of the tube 30 inserted into the release bush 29 are bent inward.

When the tube joint 3 is pushed into the port 2 with the tapered surfaces 23, 23 aligned with the tapered surfaces 8, 8, the engaging flanges 22, 22 contract in diameter due to the elasticity of the elastic walls 21, 21, and the through hole 6 , 6 returns to its original diameter at the port side openings, and engages with the engaging portions 7, 7 formed by the through holes 6, 6, so that the joint 3 is attached to the port with the tube.

In this case, the adapter 11 is attached to the tube attachment part 15.
The elastic walls 21, 21 are loosely fitted into the slits 20 and have a slight gap between them, and the slits 20...
be easily deflected, and the step portion 5 and the engaging flange portion 22
By forming tapered surfaces 8, 8, 23, and 23, respectively, the diameter of the engaging flanges 22 and 22 can be easily reduced, so that the tube joint 3 can be connected simply by pushing it into the port 2. Can be attached to port 2.

Next, the release button 29 is pushed toward the fitting part 14 to expand the locking claws 28a of the chuck 28, and the tube 30 is inserted into the release button 29.
When the release button 29 is pulled out slightly, the locking claws 28a bite into the outer wall of the tube, and the tube 30 is attached. Also, when the release button 29 is pushed in to release the locking of the tube 30 by the locking claws 28a..., the tube 3
0 can be extracted from the tube joint 3.

When the body 1 and the tube joint 3 are rotated relative to each other, the engaging flanges 22, 22 easily contract in diameter due to the elasticity of the elastic walls 21, 21, and are disengaged from the through holes 6, 6, and are removed from the peripheral wall of the stepped portion 5. Since the engaging flange part 2
2, 22 and the engaging portions 7, 7 are disengaged, and the tube joint 3 can be pulled out from the port 2. Although not shown in the drawings, the engaging flanges 22, 22
By providing a tapered surface whose diameter decreases toward the outer periphery on the circumferential end surface of the tube joint 3, relative rotation between the body 1 and the tube joint 3 is facilitated.

The tube joint mounting device in the above embodiment can be attached to and detached from the port 2 by pushing the tube joint 3 into the port 2 and rotating the two relative to each other.
Even if the body 1 and tube joint 3 of the fluid pressure device are made of a material with low strength such as synthetic resin, troublesome steps such as metal inserts and thread processing after molding are not required.

Furthermore, since the port-side engaging portions 7, 7 can be formed by the through holes 6, 6 opened in the radial direction of the port 2, the port-side engaging portions can be easily formed.

[Effect of the invention] The tube fitting mounting device of the present invention can be attached to and detached from the port by pushing the tube fitting into the port of the fluid pressure equipment and rotating the two relative to each other, so it is extremely easy to attach and detach the tube fitting to the port. It is simple, and even if these are made of a material with low strength such as synthetic resin, there is no need for complicated steps such as metal inserts or screw processing after molding.

Further, since the port-side engaging portion is formed by a plurality of through holes opened in the radial direction of the port, the port-side engaging portion, which is difficult to mold, can be easily formed.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of an embodiment of the present invention, FIG. 2 is a partial view of the body of a fluid pressure device, FIG. 3 is a front view of the adapter, and FIG. 4 is a back view of the adapter. 2...Port, 3...Tube joint, 6...Through hole,
DESCRIPTION OF SYMBOLS 10... Joint body, 11... Adapter, 15... Tube attachment part, 20... Slit, 21... Elastic wall, 22
...Engagement flange.

Claims (1)

[Scope of Claim for Utility Model Registration] A mounting device for a tube joint comprising a fluid pressure device having a port for supplying and discharging pressure fluid and a tube joint that can be attached to and detached from the port, A plurality of radial through holes are provided whose ends open to the outside, and the tube joint is composed of a joint body having a tube mounting portion, and an adapter loosely fitted to the outer periphery of the joint body in a manner that cannot be removed. The adapter is formed with a plurality of elastic walls that can be pushed into the port through a plurality of slits whose lower portions are open, and an engaging collar that engages with the through hole is provided on the outer periphery of the plurality of elastic walls facing the through hole. A mounting device for a tube joint, characterized in that it has a section.