JPH0251695A - Connecting device for pipes - Google Patents

Abstract

PURPOSE:To make it possible to connect pipes with one touch method by inter nally housing belows type of cylindrical packing bodies composed of elastic bodies provided with many numbers of projection line pieces on inner peripheral faces around and rubber rings in channels having conical faces becoming small in diameter toward the center. CONSTITUTION:A cylindrical fitting body 1 is circularly provided with channels 4 having conical faces 3 on inner walls of both end insertion sides, and elastic retainers 6 rollably arranged with spheres 5a into many numbers of holes 5 are interposed in the channels 4. Channels 10 provided with conical faces 9 made in arrow toward the center portion are circularly provided between a stopper 7 of the body 1 and the channels 4 on inner faces, and bellows type of cylindrical packing bodies 11 and rubber rings 12 are arranged inner the channels 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pipe connecting device that allows pipes to be connected simply by inserting the pipes through openings at both ends of a pipe joint body.

[Prior art and problems to be solved by the invention] Conventionally,
There are various types of connections for pipes such as piping. For example, a pipe connecting device that utilizes the correlation between a tapered surface and a sphere and utilizes this in a joint is
5305 Publication, Equity II (749-10013 Publication, etc.) and are widely used.This 'JA position is designed to tighten the pipe by rotating a nut, prevent the pipe from being pulled out, and maintain airtightness. Since tightening is based on a method, the number of rotations of the nut is high, making it inconvenient in small work sites.Therefore, users have been demanding simpler handling and lower cost.

[Means for solving problems]

The present invention was devised to solve this problem in view of the above circumstances, namely, a groove having a conical surface that widens as it goes away from the insertion port on the inside of the insertion port at both ends [1], and a groove in the center portion. A groove into which a stopper is fitted is provided around the groove, and a plurality of transfer spheres are arranged in the groove having a conical surface for the purpose of preventing the tube inserted from the insertion port from coming out due to the correlation between the conical surface and the spheres. A holding member is interposed, a stopper is fitted in the center stopper groove, and a stopper is fitted in the center of the main body on the inner surface between the bar groove and the groove on the insertion port side having the conical surface. A groove with a conical surface narrowed towards the end of the tube is provided around the circumference, and a bellows cylindrical backing body made of an elastic material and a rubber ring protruded in a saw-toothed shape are built into the groove, and the end of the tube to be inserted is This is a pipe connecting device characterized by pushing the bellows-type cylindrical backing body along the conical surface of the pipe, tightly fitting the bellows-type cylindrical backing body to the outer periphery of the pipe, and also bringing the rubber ring into close contact with the end of the groove. This allows pipes to be joined easily by simply inserting the pipes through the openings at both ends, a so-called one-touch method, and is provided for the purpose of improving work efficiency and reducing costs by simplifying the structure.

〔Example〕

Embodiments of the pipe connecting device according to the present invention will be described in detail below with reference to the accompanying drawings.

In Fig. 1, reference numeral 1 denotes a cylindrical joint body, and a groove 4 having a conical surface 3 that is waved at an arbitrary angle as it moves away from the insertion port 2 is provided on the inner wall of the body 1 on the insertion side at both ends. A number of holes 5 are provided in the hole 4 at appropriate intervals,
A sphere 5a is disposed on this so that it can freely roll, and a retaining member 6 that is an expandable bellows type and has an elastic action is interposed.
There is a groove 8 in which the parts 1 to 7 are fitted approximately in the center of J11.
It is equipped with 1I.

The inner diameter of the spheres 5a arranged in the holding member 6 is smaller than the outer diameter of the pipe P to be connected. The sphere is inserted along the conical surface 3 of the main body 1 and follows the center direction to become larger in diameter, making it easier to insert the tube P, and the sphere is always pushed toward the opening of the main body 1 by the restoring action of the bellows type spring. The structure is such that an engagement occurs between the conical surface 3 and the outer peripheral surface of the pipe P to prevent the pipe P from being pulled out.

Further, between the stopper 7 and the groove 4 of the main body 1, a groove 10 having a conical surface 9 narrowed toward the center is provided on the inner surface. A body 11 and a rubber ring 12 are arranged.

The bellows-type cylindrical backing body 11 is made of an elastic material formed into a saw blade shape and has a large number of inclined scales 11a protruding inward at appropriate intervals on the inner periphery. The inner diameter of the body 11 in its original form is the inner diameter KJ', which allows the end of the tube r) to be inserted extremely easily.
When fitting the bellows-shaped cylindrical backing body 11 to a tRIQ provided with a conical surface 9 sandwiched toward the center.

The inner diameter of the fitting portion of the conical surface 9 gradually decreases toward the center, so if the tube P is inserted in this state, the tip of the scale 11a will be tightly pressed against the outer peripheral surface of the tube P by the conical surface 9 of the main body 1. It is now possible to do so.

Further, the rubber ring 12 is made slightly larger than the normal size at the fitting position, and is fitted in a tensioned state.

[For production]

As is clear from the above configuration, in the present invention, the pipe P to be connected is inserted from the left and right ends of the joint body 1 to the position of the center stopper 7. In this case, in the groove 4 on the end side of the main body 1,
A holding member 6 having a sphere 5a is interposed therebetween, and one end is connected to the side wall 13 of the groove 4 by a receiver 11. ．． The other end is pushed by the bellows type elastic force and is located at the end of the conical surface 3. Therefore, the inner diameter of the sphere 5a disposed on the holding member 6 in the groove 4 is the same as that of the pipe P.
is smaller than the outer diameter of Therefore, when inserting the tube P, temporary resistance is generated and the sphere 5a moves;
Since a is arranged on the holding member 6 which maintains elasticity with a bellows type spring, by applying a slight force, the tube P can move and push the sphere 5 toward the enlarged part of the conical surface 3, and the tube P can be easily moved. can be inserted into When the tube P is inserted in this way, the sphere 5a tries to return to its original position by the action of the bellows spring and always comes into close contact with the tube P, resulting in a conical surface:
3 and the pipe P are always in mesh. When the tube P is further pushed in, the scales of the tongue-shaped cylindrical backing 11 form a conical surface 9.
, and its inner diameter is slightly smaller than the outer diameter of the pipe P. Therefore, if the end of the pipe P contacts and is pushed in, the tongue-shaped cylindrical backing 11 will shrink along the conical surface 9. Furthermore, the rubber ring 12 is interposed between the pipe P, the bellows-shaped cylindrical backing body 11, and the end of the conical surface 9 toward the center of the main body 1, and is pressed in the direction of the smaller diameter to increase the adhesion. It works to maintain airtightness. That is, in the state in which this WI) is pushed in, both internal and external pressure withstand pressure is strong, but it exhibits particularly strong withstand pressure under external pressure. This is because, in the case of external pressure, the stronger the applied force, the more the bellows-shaped cylindrical packing body 11 is suppressed in the direction of the conical surface 9. That is, the connection can be made simply by inserting the pipe P into the main body 1, and the pipe can be prevented from being pulled out and airtightness can be sufficiently achieved.

〔effect〕

As described above, the present invention has a cylindrical body with a
A groove having a conical surface that becomes wavy as it moves away from the insertion port, and a groove in the center for fitting the stopper are provided around the groove to fit the stopper.

The groove having the conical surface is interposed with a holding member equipped with a plurality of rolling spheres that prevent the inserted tube from coming out due to the correlation between the conical surface and the sphere, and a stopper groove. A groove having a conical surface narrowing toward the center is provided on the inner surface between the grooves having the conical surface, and this groove has an elastic bellows type groove provided with a large number of protruding strips around the inner periphery. This is a pipe connecting device characterized by a cylindrical backing body and a rubber ring inserted at the end of the backing body.If the pipes to be connected are inserted from both ends of the joint body up to the center stopper, the ends of the pipes are placed in the holding member. At the same time, the protruding strip provided around the inside of the bellows-shaped cylindrical backing body is pressed into close contact with the outer circumferential surface of the pipe in correlation with the conical surface. Pressure works to push the bellows-shaped cylindrical backing body into the narrow direction of the conical surface, so the more pressure is applied, the more the withstand pressure increases, and a rubber ring is inserted to help ensure tight contact at the end of the conical surface.

The more pressurized, the more the pressure resistance increases, and sufficient airtightness can be achieved. In addition, when inserted into the tube, the sphere placed on the holding member bites into the outer periphery of the tube between the conical surface and the tube due to the restoring action of the elastic body, and acts as a force to prevent the tube from being pulled out. Since the pipes can be connected with each other and has the potential to automatically exhibit the ability to prevent pipes from being pulled out and the airtightness, the construction progresses quickly and is therefore very economically advantageous.

[Brief explanation of the drawing]

The drawings show an embodiment of the pipe connecting device according to the present invention, and FIG. 1 is a partial vertical sectional side view, FIG. 2 is an enlarged vertical sectional side view showing a bellows-type cylindrical backing, and FIGS. FIG. 2 is a front view, and FIG. 4 is an enlarged sectional view of the holding member. 1... Cylindrical joint body, 2... Insertion port, 3, 9...
・Conical surface, 4, 8.10...groove, 5...hole, 5a・
... Sphere, 6... Holding member, 7... Stopper, 11
...Bellono! ! Cylindrical backing body, lla...scale, 12...rubber ring, P...pipe lI4 Figure 2 Procedural amendment (voluntary) No.: 5rg

Claims (1)

[Claims] A groove having a conical surface that widens as it goes away from the insertion port is provided on the inside of the insertion port at both ends of the cylindrical body, and a groove for fitting the stopper is provided in the center part, and the stopper is fitted, and the conical surface is fitted. A holding member is interposed in the groove having a plurality of rolling spheres that prevent the tube inserted from the insertion port from coming off due to the correlation between the conical surface and the sphere, and further has a stopper groove and the conical surface. A groove with a conical surface narrowing toward the center is provided on the inner surface between the grooves, and this groove is equipped with an elastic bellows-shaped cylindrical packing body having a large number of protruding strips around the inner circumference. A pipe connection device featuring a rubber ring.