JPH10205668A - Connector for pipe body and the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out connection tightly so as to prevent a pipe body and the like from getting out in a reverse direction, and but insert the pipe body and the like easily by slantly arranging an elastic metal thin piece on an inner wall of a cylindrical body or an annular body toward a direction reverse to an inserting side of the pipe body and the like. SOLUTION: A base part of a rubber cap 2 is inserted and fixed to one end inner side of an annular body 1, base parts of spring steel pieces 3, 3 are buried in the inner wall part of the annular body 1 at an equal interval, tip end parts of the spring steel pieces 3, 3 are projected slantly toward a rubber cap 2 side in the annular body 1, and those projection ends have an angle αabout a line 5 perpendicular to a center line 4 of the annular body 1 in parallel with a virtual spiral streak. The annular body 1 is advanced in the direction of an arrow 8, and is fitted to a pipe body 9. When the annular body 1 is advanced while rotating, a spiral groove 10 is formed toward an outer wall of the pipe body 9 by the spring steel pieces 3, 3. The annular body 1 and the pipe body 9 are tightly fixed to each other through the spring steel pieces 3, 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular body, etc., for connecting a tubular body, a tubular body, a rod, etc. to a tubular body, a ring body, etc. fitted on the outside thereof by hooking a thin elastic metal piece. Related to the connector.

[0002]

2. Description of the Related Art Conventionally, as connecting devices such as a tubular body, there are known various connecting devices (or devices) such as fitting, screw connection, bonding, welding, and connection using a set screw. Has been used.

[0003]

In the above prior art, the fitting generally has a small resistance to an external force applied in the axial direction except for a special case (for example, shrink fitting), and sometimes there is a possibility that the fitting may come off. is there. Although screw connection is safe and secure, it is essential that female and male threads be screwed together. There is a problem that a screw needs to be cut longer than necessary or a screw needs to be cut on site to cope with a case where it is necessary to cut off (for adjusting the total length). Therefore, a fixed part can be factory-produced, but if the length is indeterminate, on-site work is required.

[0004] Next, in the case of bonding, welding, etc., in addition to the problem of the adhesive or the welding technique, it is sometimes difficult to connect different kinds of materials, and it is usually necessary to remove once after connecting once. Was difficult to reuse. Further, when a set screw is used, the set screw is an essential requirement on the outside of the cylindrical body and the tube body, so that not only the number of parts is increased but also the workability tends to be deteriorated.

[0005]

According to the present invention, an elastic metal flake is obliquely provided on the inner wall of a tubular body so that the tubular body can be inserted smoothly when it is inserted. The connection between the outer wall and the tip of the elastic thin metal piece was easily and easily achieved by hooking. By disposing the tip of the elastic metal flakes obliquely (along the spiral strip generated by rotation), removal can be facilitated.

That is, according to the present invention, an elastic metal flake having a tube or the like inserted into the inner wall of a synthetic resin cylinder is pressed against the outer wall of the tube, etc. A connecting member such as a tube, which is formed so as to project obliquely so as to be able to come into contact with the inner wall of the cylindrical body, and is provided with a relief recess for elastic metal flakes on the inner wall of the cylindrical body. The elastic metal flakes are kept at a predetermined interval, and the insertion side of the tubular body or the like of the cylindrical body is buried so as to be protruded at an angle, and a relief recess of the elastic metal flake is provided on the inner side wall of the cylindrical body. It is a connection tool such as a tubular body that is characterized. According to another aspect of the present invention, there is provided a connecting device in which large and small cylindrical members made of synthetic resin having different inner diameters are connected to each other. At the inner wall near the elastic metal flake,
A connecting member such as a tubular body characterized in that a recessed portion for an elastic metal flake is provided, wherein the elastic metal flake having the insertion side of the tubular body or the like embedded in the inner wall of a synthetic resin ring is inclined. Protrude,
The pipe is characterized in that a protruding end of the metal flake is given a predetermined angle with respect to a center line of the pipe or the like so as to form a spiral groove in an outer wall of the pipe or the like by rotation of the ring. It is a connection tool such as a body. Further, a plurality of metal flakes are fixed on the outer wall circumference of the cylindrical body at predetermined intervals.

[0007] In the above invention, there is a case in which a relief recess of the elastic metal flake is described as an essential component. However, since the object is not to hinder the insertion of the tubular body, the tubular body and the tubular body must be connected to each other. If the elastic metal flakes can be retracted into the gap, the escape recess becomes unnecessary. An annular groove may be used instead of the escape recess.

The connecting device of the present invention can connect not only a synthetic resin tube but also a metal tube, and can also connect a square tube or the like if removal after connection is not required.
When watertightness and airtightness are required, a filler may be used in combination, or an O-ring or the like may be fitted to a tube or the like.

In the connecting device of the present invention, since the elastic metal flakes are usually buried when the cylindrical body is formed, all the manufacturing is performed in a factory and there is no additional work on site. Therefore, at the site, it is sufficient to simply fit the tubular body and the tubular body in the axial direction, or to fit them to a predetermined depth while rotating. The same applies to an annular body (in this specification, a cylindrical body whose axial length is smaller than its diameter).

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is directed to an elastic metal thin plate having a tube or the like inserted into an inner wall of a synthetic resin cylindrical body or an annular body, which is obliquely projected into the inner wall of the cylindrical body or annular body. The protruding end,
This is a connector characterized by being brought into pressure contact with an outer wall of a tube or the like.

By arranging a plurality of the elastic metal flakes obliquely so as to form a part of a spiral, if the cylindrical body or the annular body is fitted while rotating, it proceeds while being threaded.

[0012]

Embodiment 1 An embodiment of the present invention will be described with reference to FIG. A base of a rubber cap 2 is fitted and fixed inside one end of the ring 1, and bases of the spring steel pieces 3, 3 are buried in the inner wall of the ring 1 at equal intervals. The front end portion is provided to project inclining toward the rubber cap 2 side in the ring body 1 and the protruding end thereof is perpendicular to the center line 4 of the ring body 1 so as to be parallel to the virtual spiral strip. In contrast, an angle α is formed. A through hole 7 through which the cable 6 is inserted is provided at the center of the rubber cap 2 to form a protective cap 40.

In the above embodiment, the ring 1 is advanced as shown by the arrow 8 and fitted into the tube 9 and then the ring 1 is advanced (in the direction of the arrow 8) while rotating (in the screwing direction). When,
A spiral groove 10 is formed on the outer wall of the tube 9 by the spring steel pieces 3 and 3. Therefore, the ring body 1 and the tube body 9 are tightly fixed via the spring steel pieces 3, 3. Since the spring billets 3 are tightly fixed via the spiral groove 10, if the ring 1 is rotated in the reverse direction, the ring 1 and the tube 9 can be easily removed. In the above case, the escape recess 3a is often unnecessary.

[0014]

Second Embodiment FIGS. 2A and 2B show another embodiment of the present invention.
It will be described based on. An annular ridge 12 is provided at the center of the inner side of the synthetic resin cylinder 11, and spring steel pieces 1 are provided on the inner walls of the left and right cylinders 11 a and 11 b of the annular ridge 12.
Numerals 3 and 13 project obliquely toward the opposite sides of the opening of the cylindrical body 11, and reference numerals 14 and 15 in the figure denote pipes connected by the cylindrical body 11. In the cylindrical body wall in which the spring steel pieces 13 are embedded, escape recesses 16 for the spring steel pieces 13 are provided, respectively.

In the above embodiment, the tube 1 is connected to the tube 11.
When the pipes 4 and 15 are inserted from the directions indicated by arrows 17 and 18, the spring steel pieces 13 and 13 are pressed by the outer walls of the pipes 14 and 15 toward the recess 16 so that the pipes 14 and 15 pass easily. However, the tubes 14, 15 are indicated by arrows 19, 2,
Pulling in the direction of 0 locks the spring steel pieces 13, 13 with the outer walls of the tubes 14, 15, so that the tubes 14, 15 cannot be removed and are tightly connected.

[0016]

Embodiment 3 Another embodiment of the present invention will be described with reference to FIG. This embodiment shows a lock nut 22 at the mouth of a conduit 21. Through hole 22a through which conduit 21 can be inserted
A spring billet 23 is provided on the inner wall of the lock nut 22 having
Are arranged along a virtual spiral strip (corresponding to the screw 25). In the above embodiment, the lock nut 22 is fitted into the conduit 21 as shown by an arrow 24 and the lock nut 22 is rotated, so that the spring steel piece 23 is attached to the conduit 21.
While engraving a screw 25 on the outer wall of the vehicle. Then, the switch box 26 is inserted from one side, and the insulating bushing 27 is screwed (or fitted) to the protruding portion of the electric conduit 21 to fix the switch box 26 and the electric conduit 21. 2 in the figure
8 is an electric wire.

[0017]

Embodiment 4 Another embodiment of the present invention will be described with reference to FIG. A small-diameter cylindrical body 30 is continuously provided on one side of the large-diameter cylindrical body 29, and spring steel pieces 31, 31 are inclined and protruded inside the large and small cylindrical bodies 29, 30, respectively. Each of the spring steel pieces 31, 31 is obliquely provided so as to face the opposite side of the respective opening, and near the spring steel pieces 31, 31, escape recesses 32, 32 of the spring steel pieces 31, 31 are provided. Was provided to form the connection tool 33.

In the above embodiment, if the large and small pipes 34 and 35 are inserted from both ends of the connecting tool 33 as indicated by arrows 36 and 37, the pipes can be inserted relatively easily.
Is pulled in the directions of arrows 38 and 39, and the spring billet 3
Since the pipes 1 and 31 and the outer walls of the pipes 34 and 35 are hung, it is difficult to remove the pipes 34 and 35, and the pipes 34 and 35 are tightly connected.

In the above, the tip of the spring piece 31 is inclined so as to follow the imaginary thread, and the pipes 34, 35 are rotated forward and connected, respectively, or the tip of the spring piece 31, 31 By inclining the pipes 29 and 30 in opposite directions, and rotating the connector 33, the pipe 34,
35 can be invoked and connected. In the case of such a rotational connection, it can be removed by reverse rotation.

[0020]

According to the present invention, since the elastic metal thin piece is inclined on the inner wall of the tubular body or the annular body in the direction opposite to the insertion side of the tubular body or the like, the tubular body or the like can be easily inserted. , It is not possible to escape in the opposite direction, so that there is an effect that the connection can be made tight.

If the elastic thin metal piece is also used for thread cutting, there is an effect that the connection can be easily released by reversing the cylinder or the ring after connecting the pipe or the like.

[Brief description of the drawings]

FIG. 1A is a partial sectional view when the present invention is used for a protective cap. (B) Sectional drawing which shows arrangement | positioning of a spring steel piece similarly.

FIG. 2 (a) is a partial cross-sectional view when the present invention is used for a connector for a tubular body. (B) A partially enlarged cross-sectional view of the wall portion.

FIG. 3 (a) is a partial cross-sectional view when the present invention is applied to a lock nut. (B) A plan view of the usage example.

FIG. 4 is a partially enlarged cross-sectional view when the present invention is used for a connecting tool for large and small pipes.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ring body 2 Rubber cap 3 Spring steel 4 Center line 5 Right angle line 6 Cable 7 Through hole 9 Tube 10 Spiral groove 11 Tube 12 Annular ridge 13 Spring steel pieces 14, 15 Tube 16 Escape recess 21 Conduit tube 22 Lock nut 23 Spring steel piece 25 Screw 26 Switch box 27 Insulating bushing 28 Electric wire 29, 30 Cylindrical body 31 Spring steel piece 32 Escape recess 33 Connector 34, 35 Tube

Claims (5)

[Claims] 1. An elastic metal thin piece having an insertion side such as a tube buried in an inner side wall of a synthetic resin cylindrical body so that a contact end of the metal thin piece can press and contact an outer wall of the tube or the like. A connecting member such as a tube, wherein the connecting member is formed so as to project obliquely and to provide an escape recess for an elastic metal thin piece on an inner side wall of the cylindrical body. 2. An elastic metal thin piece is inserted into an inner side wall of a synthetic resin tubular body at a predetermined interval, with an insertion side of a tubular body or the like of the tubular body being buried and projecting obliquely. A connector such as a tube, wherein an escape recess of an elastic metal flake is provided on an inner wall. 3. A connecting tool in which large and small cylindrical members made of synthetic resin having different inner diameters are connected to each other, and an elastic metal thin piece having a tube insertion port side embedded therein is obliquely attached to the inner wall of each of the large and small cylindrical members. A connector, such as a pipe, provided with a projecting recess provided on an inner side wall near the elastic metal flake. 4. An elastic metal piece having a tube or the like inserted therein is projected obliquely onto the inner wall of a ring made of synthetic resin, and the projecting end of the metal piece is rotated by rotation of the ring. A connection tool for a pipe or the like, wherein a predetermined angle is given to a center line of the pipe or the like so as to form a spiral groove on an outer wall of the pipe or the like. 5. A plurality of elastic metal flakes are fixed at predetermined intervals around the same circumference on the inner wall of a cylindrical body or an annular body. A connection tool such as the tube according to any one of the above.