WO2012148014A1

WO2012148014A1 - Fitting apparatus and fitting method for a pipe

Info

Publication number: WO2012148014A1
Application number: PCT/KR2011/003044
Authority: WO
Inventors: 김일근
Original assignee: (주)로커스
Priority date: 2011-04-26
Filing date: 2011-04-26
Publication date: 2012-11-01

Abstract

According to the present invention, a fitting apparatus for a pipe comprises: a pipe in which a fluid flows; a pushing member in which the pipe is inserted; a facing material having a fixed location with respect to the pushing power of the pushing member, and in which the pipe is inserted; and a parrel unit arranged as one body in any one of the pushing member or the facing material. According to the present invention, a fitting method for a pipe comprises the steps of: inserting a pipe into a left member and a different pipe into a right member; and fitting the different pipes together by joining the left member and the right member. According to the present invention, the effects can be realized of saving time regarding a fitting operation, of preventing pipe loss, of convenience in a fitting operation, of cost-cutting, and of improving the function of leak prevention. Also, the present invention has the effect of cost-cutting in terms of materials.

Description

Fitting device for pipe and fitting method for pipe

The present invention relates to a fitting device and a fitting method for connecting a pipe.

As a typical application example of connecting the pipe, there is a case of fitting by connecting the indoor unit and the outdoor unit of the air conditioner. As a conventional method of connecting and fitting such a pipe, a welding method may be applied, but the welding method is not preferable because it consumes a lot of time and damages the pipe.

Meanwhile, brass is mainly used as a material of the conventional fitting device because of its excellent physical properties and beauty. In the case of using a brass material, the fitting could be performed not only by welding but also by expansion method. However, free cutting brass, which is mainly used as a material for fittings, contains lead and cannot meet the LOHAS standard. Thus, there is a demand for a material of the fitting device that can replace this.

Pipes used for various purposes are also expensive due to the increase in copper prices, and there is a need for materials that can replace copper. Under these circumstances, there is a need for a pipe of a material that can replace copper and a fitting device suitable for the pipe of the material.

On the other hand, when aluminum is used as the material of the pipe of the fitting device, it is not preferable because expensive argon welding should be applied when fitting by the welding method. In addition, the expansion method to increase the diameter of the pipe, there is a problem that is difficult to apply due to the characteristics of the low ductility of aluminum. As a result, there is a growing demand for a fitting device capable of sufficiently preventing leakage of a material flowing in the inside of the pipe while using aluminum as the material of the pipe.

As the above-mentioned solution, there is a technique of registration No. 10-0924735 proposed by the applicant of the present invention. In this technique, the method of tightening the nut member 20 with respect to the connection member 10 after inserting a pipe in both sides of a fitting apparatus is applied. In this way, the connection member 10 and the parallel member 30 and the end of the tube 3 is in close contact with the seat 40 to prevent the leakage of the tube is performed. As a result, it is possible to save time, prevent pipe loss, ease of fitting work, reduce costs, and prevent leakage, and also prevent corrosion and improve surface hardness when surface treatment is performed on the outside of the fitting device. .

The prior art proposed by the present applicant can attain to some extent the various effects described in the literature. However, since the ferrule member is provided as a separate part, it is difficult to insert the inside of the connecting member, and there is a high possibility that the concentricity of the parallel member may be displaced during the insertion of the wound tube into the fitting device. Due to this, not only is the work difficult, there are many cases in which rework is required, and there is a fear of leakage in the case of fitting without concentricity. As a result, the convenience of the fitting work is lowered, and the work time is increased.

In the case of the fitting apparatus according to the prior art, it is difficult to know how much rotation angle to rotate by how much force when rotating the nut member. As a result, there is a problem that the parallel member is damaged to cause leakage.

Fitting device for a pipe according to the present invention for solving the above problems, the fluid flow pipe; A pushing member into which the tube is inserted; A counterpart whose position is fixed with respect to the pushing force of the pushing member and into which the tube is inserted; And a parallel portion provided as one body to either the pushing member or the counterpart.

Fitting device for a pipe of the present invention according to another aspect, the left member is inserted into the pipe; Another tube is inserted, the right member accessible to the left member; An intermediate member into which the tube and the other tube are inserted; And a parallel part provided in at least one of the left member and the right member.

Fitting device for a pipe of the present invention according to another aspect, the hollow member is inserted into the left member; The hollow member is inserted into the other tube, the right member is fastened to the left member; At least one portion of the left member and the right member is mediated in a radial direction; A protruding portion formed at one end of the intermediate member; A recess formed in at least one of the left member and the right member to correspond to the protrusion, such that the protrusion is inserted into the fitting; And a parallel part that performs a sealing operation by deformation when the left member and the right member approach each other.

According to another aspect of the present invention, a fitting method for a tube of the present invention includes inserting different tubes into a left member and a right member: and fitting the different tubes together by the action of approaching the left member and the right member. Steps are included.

According to the present invention, all problems which are pointed out as problems in the prior art can be solved. In addition, it is possible to reduce the time and effort of the fitting work due to the completion of the two-way fitting by one rotation action, to reduce the cost by reducing the number of parts, and to improve the performance of preventing leakage by the rigid sealing. In addition, there is an advantage that the operator can know the rotation angle and rotation force conveniently and accurately.

1 is a perspective view of a fitting apparatus according to the first embodiment.

2 is a cross-sectional view taken along line AA ′ of FIG. 1.

3 is a cutaway perspective view of the fitting device.

4 and 5 are enlarged views of part “a” of FIG. 2, FIG. 4 is a view just before the parallel part is deformed, and FIG. 5 is a view after the parallel part is deformed.

6 is a flow chart of a fitting method for a tube.

7 is a sectional view of a sheet according to a second embodiment.

8 is a cross-sectional view of the fitting apparatus according to the third embodiment.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention.

1 is a perspective view of a fitting apparatus according to an embodiment, and FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1.

1 and 2, the fitting device 1 according to the embodiment includes a left member 2 into which the left tube 4 is inserted, a right member 3 into which the right tube 5 is inserted, and a left tube (4) and the right tube (5) is inserted and includes the intermediate member (7) which is provided in a fixed position relative to the force transmitted from the left member (2) and the right member (3) during the fitting operation. The left member 2, the right member 3, and the intermediate member 7 are both provided in a hollow shape with an empty inside, and the

tubes

4 and 5 are inserted into the empty space. In addition, the intermediate member 7 is inserted into the left member 2 and the right member 3.

Inside the intermediate member 7 a cylindrical sheet 6 is placed. The left and right tubes 4 and the right tube 5 are in contact with both left and right sides of the sheet 6, and the contact surfaces thereof are sealed to prevent leakage of fluid flowing through the

tubes

4 and 5.

With reference to the configuration of the fitting device described above will be described schematically the fitting work performed by the operator.

Pipes

4 and 5 are respectively inserted at the left and right sides of the fitting device 1, and external force is applied to allow the left member 2 and the right member 3 to approach each other. When the left member 2 and the right member 3 are close to each other, the left and right members and the parallel part provided in one body (see 34 in FIG. 4) are pushed, and the parallel part 34 is the left tube 4 and The right tube 5 is pushed toward the seat 6 by a predetermined distance to perform a picking action. The parallel part 34 is provided in both the left member 2 and the right member 3. This action includes a leak prevention action for bringing the contact surface between the seat 6 and the

pipes

4 and 5 into close contact, a leak prevention action for bringing the contact parts between the left and

right members

2 and 3 and the intermediate member 7 into close contact with each other. 4) (5) and the left and right members (2) (3) leads to a leak-proof action in close contact. As a result, it is possible to obtain an advantage that the reliability of the leakage preventing action is further improved.

On the other hand, the left member (2) and the right member (3) is a body with each of the parallel portion 34, and performs the action of pushing the parallel portion 34, the left and right members (2) (3) It can also be said to be a pushing member. On the contrary, the intermediate member 7 is provided with the intermediate member 7 as a counterpart which is not pushed against the pushing force of the left and

right side members

2 and 3, that is, the pushing member. As a result, since the intermediate member 7 is provided in a fixed position even with respect to the force pushed by the left and

right members

2 and 3, the parallel part 34 can pick up the

pipe

4 and 5.

In addition, since the parallel part 34 consists of one body with each of the left and

right side members

2 and 3, the operator can check whether the parallel part 34 is concentric with respect to the

tube

4 and 5. no need. In addition, when inserting a tube having a predetermined curvature into the left and right members (2) (3), there is no fear that the fitting operation will fail because the position of the parallel member does not change even if the tube touches the parallel member.

In addition, since the fitting device can be provided as four members (left and right members, intermediate members, and seats) as a whole, the number of parts is drastically reduced and costs are reduced. This necessity is urgently needed in view of the nature of fittings used in large quantities in many articles. The sheet is not necessarily an essential article here but is preferably provided in terms of primary sealing of the fluid.

3 is a cutaway perspective view of the fitting apparatus according to the embodiment.

The configuration of the first embodiment will be described in more detail with reference to FIG. First, the structure in which the left member 2 and the right member 3 approach each other will be described. A recessed groove 22 is provided at the right end of the left member 2 to insert the protrusion 31 of the right member 3. The inner side surface of the concave groove 22 is provided with a threaded left fastening portion 23, and the outer side surface of the protrusion 31 is provided with a threaded right fastening portion (not illustrated) so as to be fastened with the left fastening portion 23. 32) is provided.

When the left member 2 and the right member 3 are rotated to each other in the direction in which the threads of the

respective fastening portions

23 and 32 are screwed together, the left member 2 and the right member 3 are approached to each other. I can move it. In this case, since only a single operation for rotating the left and

right members

2 and 3 in the opposite directions is required, it is possible to reduce the labor of the operator and to improve the work time / efficiency.

The fastening structure of the left member 2 and the right member 3 is not limited to the configuration shown in the embodiment. Any configuration capable of performing the locking action after the movement and movement between the left and

right members

2 and 3 can be applied as the fastening structure of the left and

right members

2 and 3. However, since the operator can conveniently perform the fastening operation only by the operation of rotating the left and

right members

2 and 3 in opposite directions, it may be desirable to provide a thread in terms of improving work convenience.

Inside the recess 22 and the protrusion 31, left and right mediating

member placing parts

21 and 33 on which the mediating member 7 is placed are provided. The left and right mediating

member laying portions

21 and 33 are spaces for accommodating the medial member 7, and the medial member 7 is accommodated therein so that the left and right

medial members

2 and 3 receive the medial member 7. It is a configuration for applying an external force toward.

According to the above description, with the intermediate member 7 in the center, the parallel member (refer to 34 in FIG. 4) formed by the left and

right members

2, 3 and one body by a single rotating action is also provided by the intermediate member 7. It is well understood that it is pushed towards.

On the other hand, a sheet seating portion 71 on which the sheet 6 is placed is provided at substantially the center of the inner surface of the intermediate member 7. In the seat seating portion 71, the seat 6 slightly swings and is approximately fixed in position. The material of the sheet 6 may be exemplified by a polymer synthetic resin, Teflon, rubber, various synthetic resins, and the like, and may be selected from various materials capable of performing a sealing operation in contact with a metal.

The sheet 6 may be sealed by the ends of the

pipes

4 and 5 touching both sides of the sheet 6, even if the sheet 6 swings in the inner space of the seat seat 71. It has an inner diameter and an outer diameter such that the flow of the fluid flowing inside the

pipes

4 and 5 is not disturbed. As a result, the sheet 6 may come into contact with the end faces of the

tubes

4 and 5 to produce a sealing effect, and may not interfere with the fluid flow inside the

tubes

4 and 5.

FIG. 4 is an enlarged view of a portion “a” of FIG. 2 and is just before the parallel part is deformed.

Referring to Fig. 4, when the left and

right members

2, 3 approach each other, the sealing operation between the

pipe

4, 5, the intermediate member 7, and the left and

right members

2, 3 will be described. .

First, a parallel part 34 is provided inside the inner diameter side of the left and

right side members

2 and 3. The parallel portion 34 has an angle of “b” as the tip portion thereof becomes sharper toward the inner side. To this end, the inner surface of the parallel portion 34 forms a tip inclined portion 39 that is not parallel to the

pipes

4 and 5, and the outer surface of the parallel portion 34 forms an outer corresponding inclined portion 35. . The tip inclination portion 39 is inclined at a predetermined angle with respect to the

tubes

4 and 5 so that it is easy to dig the

tubes

4 and 5 when the parallel portion 34 is pushed toward the intermediate member 7 side. On the other side, a groove is formed on the inner surface side of the parallel portion 34 by the tip slope portion 39.

Subsequent to the outer corresponding inclined portion 35, the inclined inclined portion 37 is provided in which the inclination decreases in a direction parallel to the

pipes

2 and 3 as compared with the angle formed by the outer corresponding inclined portion 35. Subsequent to the inclination inclination portion 37, a fitting inclination portion 38 is provided in which the inclination increases in a direction orthogonal to the

pipes

2 and 3 as compared with the angle formed by the outer corresponding inclination portion 35. The space formed by the depression slope 37 and the fitting slope 38 forms a depression 36. The depression 36 is a portion in which the end of the intermediate member 7 is fitted during the fitting operation so that the intermediate member 7 acts as an interference fit on the left and

right members

2 and 3. The fitting inclined portion 38 has an angle of “c” with respect to the outer inclined portion 74 of the intermediate member 7 in order to secure a space for performing the interference fitting operation.

The outer end of the intermediate member 7 is provided with an inner inclined portion 72 extending in a direction substantially orthogonal to the

pipes

2 and 3. The inner inclined portion 72 makes it easy for the parallel portion 34 to dig into the

pipes

2 and 3 when the left and

right members

2 and 3 are approaching. . Following the inner inclined portion 72, an intermediate side corresponding inclined portion 73 is provided in which the inclination is decreased in a direction parallel to the

pipes

2 and 3 as compared with the angle formed by the inner inclined portion 72. The intermediate side corresponding inclined portion 73 performs a sealing operation with the outer side corresponding inclined portion 35 after the fitting operation is performed. Subsequent to the intermediate side corresponding inclined portion 73, there is provided an outer side inclined portion 74 in which the inclination increases in a direction orthogonal to the

pipes

2 and 3 as compared with the angle formed by the intermediate side corresponding inclined portion. As described above, the outer inclined portion 74 is inserted into the recess 36 during the fitting operation to perform a function of interference fit.

On the other hand, the end portion of the intermediate member 7 by the inner side slope portion 72, the intermediate side corresponding slope portion 73 and the outer side slope portion 74 forms a shape recessed toward the inner side. On the contrary, it forms the shape which protrudes to the outer diameter side. By such protruding shape, interference fit may be performed into the recess 36.

FIG. 5 is an enlarged view of a portion of FIG. 2 and illustrates a state after the parallel part is deformed. FIG.

4 and 5, when the left and

right members

2 and 3 approach and the parallel part 34 is pushed inward (the left direction in FIGS. 4 and 5), the front end of the parallel part 34 The

tubes

4 and 5 are deformed by digging into the contact portions between the

tubes

4 and 5 and the intermediate member 7. In order for the parallel part 34 to penetrate the

pipes

4 and 5, the

pipes

4 and 5 are preferably harder and tougher than the left and

right members

2 and 3. The parallel portion 34 has an angle of “b” so as to facilitate the digging effect, and the tip slope portion 39 is inclined with the outer surface of the

pipes

2 and 3 at a predetermined angle in a concave circumferential direction. The groove 40 is provided.

When the parallel portion 34 is pushed inward, a portion of the

tube

4, 5 that contacts the tip of the parallel portion 34 contracts inward, and a portion of the

tube

4, 5 that is contracted is inversely parallel. (34) is pushed outward to squeeze the middle side corresponding inclined portion 73 and the outer side corresponding inclined portion 35 to prevent leakage. On the other hand, a portion of the tube that is raised by the contraction of the

tube

4, 5 is led to the inside of the groove 40 in the rear of the contracted tube (4) (5), the groove of the groove (40) By the action, the parallel part 34 can penetrate the

pipe

4 and 5 more easily. In addition, the

tube

4, 5 by the action of entering the deformed portion of the tube (4) (5) into the groove 40 and the action of the parallel portion 34 to shrink the tube (4) (5), etc. Once locked, it will not fall out.

As a result of this deformation, the contact between the parallel part 34 and the

pipes

2 and 3 is sealed.

In addition, when the parallel part 34 is pushed, the parallel part 34 and the

pipes

4 and 5 are deformed, and the middle side corresponding inclined portion 73 and the outer side corresponding inclined portion 35 are in close contact with each other. The distal end of the parallel portion 34 contracts the contact portions of the

tubes

4 and 5 to be in close contact with the corresponding portions of the

tubes

4 and 5. The outer inclined portion 74 enters the interior of the depression 36 to be fitted. The raised portions of the

tubes

4, 5 enter the interior of the grooves 40. As a result, the contact portions of the left and

right members

2 and 3 and the intermediate member 7 may be sealed. As a result of the various interactions described above, each point can be sealed smoothly.

On the other hand, in the embodiment, both ends of the intermediate member 7 is pressed against the depression 36. The interference fit action is performed by the rotational action of the left and right members (2) and (3). When the interference fit is made perfect, the frictional force by the interference fit occurs over the entire circumferential direction of the intermediate member. Therefore, the rotational force required to rotate the left and

right members

2 and 3 increases rapidly, and eventually the left and

right members

2 and 3 become substantially incapable of rotation when the interference fit is completed. . Similarly, the strong frictional force generated by the interference fit acts as a force that the left and

right members

2 and 3 do not loosen with each other, thereby improving the reliability of the fitting device.

Thus, the operator performing the fitting work can conveniently know that the fitting work is finished. In addition, the rotation angle from the deformation of the parallel part 34 to the end of the interference fit of the intermediate member 7 and the left and

right members

2, 3 is the total rotation necessary to perform the fitting operation. It can be called angle. Although dependent on the pitch of the threads provided on the left and

right fasteners

23 and 32, this remains within a limited angular range. As a result, the rotation angle required for the fitting work is limited to a small rotation angle range, the limit angle can be conveniently known by the change in the force that the operator should apply.

In addition, by appropriately adjusting the size of the parallel portion 34, the front end of the parallel portion 34 at the time when the interference fit between the both ends of the recess 36 and the intermediate member 7 occurs completely, the tube (4) (5) can be dug up properly. As a result, the effect of the sealing operation can be further increased.

The restricting action of the rotational angle range by the recess 36 may be similarly performed in the groove 40, so that after the groove 40 into which the raised portions of the

pipes

4 and 5 enters, the pipe 40 is filled. Deformation of (4) (5) becomes difficult, so that the action of restricting the insertion of the parallel part 34 may be performed.

On the other hand, when the

pipes

4 and 5 are pushed inward, the seat 6 and the

pipes

4 and 5 are strongly compressed so that the sealing of the fluid flowing in the

pipes

4 and 5 is more secure. Can be performed.

6 is a flow chart of a fitting method for a tube.

Referring to FIG. 6, the operator inserts the

pipes

4 and 5 from both sides of the fitting apparatus in a state in which the left and

right members

2 and 3, the intermediate member 7, and the seat 6 are mounted (S1). ). In the state where the tube is mounted, when the left and

right members

2 and 3 are rotated to the opposite sides, fitting of the tube is completed.

As described, the fitting of the pipe can be completed by simple and simple operation, so that the efficiency and reliability of the operation can be further improved.

As another embodiment, one of the left and right members may be provided with the parallel part as one body, and the other may be provided with the parallel part as a separate member. However, in order to reduce the material cost, the parallel part is preferably provided in one body on both the left member and the right member.

In another embodiment, the protrusion 31 is described as being in contact with the intermediate member 7, but is not limited thereto, and the recessed groove 21 and the intermediate member 7 may be formed of the intermediate member. Instead of the outside, it may be provided outside the extension range of the intermediate member 7, that is, the outside of any one of the left and right members (2) (3). Even in this case, the basic action of making the left and

right members

2 and 3 accessible to each other is the same.

In another embodiment, the parallel part 34 is provided in one body on the left and

right members

2 and 3, but may be provided in the intermediate member 7. However, from the viewpoint of processing efficiency, material, and sealing efficiency, it is more preferable to be provided in the left and

right members

2 and 3.

In the case of the first embodiment, the

tube

4, 5 is inserted into the left and

right members

2, 3 and then the left and

right members

2, 3 are approached to start the action of the parallel member 34. Previously, the

tubes

4 and 5 can be pulled out of the left and

right members

2 and 3 when the tubes are arranged in the vertical direction or when an external force is applied. In addition, even if the tube (4) (5) is a slight distance away from the insertion end, the sealing between the seat (6) and the tube (4) (5) is not made even after the tightening is completed, so that There is also concern.

The second embodiment is proposed to solve the stability problem of pre-assembly of the pipes before the fastening of such pipes, and the sheet is different from the first embodiment. In the present embodiment, the description of the first embodiment is used as the part without specific description.

7 is a sectional view of a sheet according to the second embodiment.

Referring to FIG. 7, the seat 61 has a sealing portion 62 in contact with the end portions of the

pipes

4 and 5 to prevent leakage, and left extension portions extending in both directions of the sealing portion 62. 63 and the right extension 64 are included. When the

tubes

4 and 5 are inserted through the

extensions

63 and 64, the inner diameter is set to be slightly smaller than the outer diameter of the

tubes

4 and 5 so that the

tubes

4 and 5 are fixed.

Provisional assembly portions

65 and 66 are further provided. The seat 61 may be inserted into the intermediate member 7 as in the first embodiment.

The

temporary assembly parts

65 and 66 may be provided in a shape in which at least two or more protrude from the inner diameter side of the

extension parts

63 and 64 with respect to one

extension part

63 and 64. Can be. As a result, the operation of inserting the

pipes

4 and 5 is smoothly performed.

The

temporary assembly parts

65 and 66 have an end portion at which the

tube

4 and 5 are inserted (that is, the right temporary assembly part 66 is at the right end and the left temporary assembly part 65 is at the left end). It may be provided to be inclined in the direction. Thus, the insertion of the tube can be guided more smoothly by guiding the insertion of the tube. On the contrary, the end from which the tube is pulled out from the temporary assembly parts 65 and 66 (that is, the right temporary assembly 66 is the left end and the left temporary assembly 65 is the right end) has no inclination or is inclined in the direction in which the tube is inserted. Can be provided. By such a shape, it is possible to prevent the

pipes

4 and 5 inserted once from being detached.

According to the second embodiment, the operator inserts the

pipes

4 and 5 on both sides of the fitting device with a predetermined length while the left and

right members

2, 3, the intermediate member 7 and the seat 6 are mounted. If the

tube

4, 5 is seated, more precisely the

extensions

63, 64, more precisely, the temporary assembly of the

tubes

4, 5 is completed.

In the state where the tube is temporarily assembled and mounted with respect to the intermediate member 7, the fitting operation of the tube is terminated when the left and

right members

2 and 3 are rotated in opposite directions.

The provisional assembly is not limited to the structure and shape shown in the embodiment, so that the grooves in the circumferential shape is dug in both end surfaces of the sealing section, so that the end portions of the

pipes

4 and 5 are fitted into the grooves. Various modifications can be made, such as the protrusions being not in the circumferential shape but also in the spaced apart protrusions arranged in the circumferential direction.

Third embodiment

The first and second embodiments are embodiments for a fitting device for connecting a pipe and a pipe. The idea of the present invention can be applied not only to connecting a pipe and a pipe, but also to a device for connecting a pipe and a valve. In the description of the third embodiment, the description of the first embodiment shall be used unless otherwise specified.

Referring to FIG. 8, the valve 8 is a valve device for dispensing / filling / draining fluid. The case where the pipe 4 is connected to any one connection pipe 81 of the said valve 8 is demonstrated as an example. The seat 67 is seated in the connecting pipe 81. The pipe 4 is inserted into the connection pipe 81 after passing through the pushing member 25. The pushing member 25 is provided in a shape similar to that of the left member 2 of the first embodiment, and a parallel portion 341 is provided at an inner end thereof. An inclined surface 82 through which the parallel portion 341 is provided is provided at the distal end portion of the connection pipe 81. An inner surface of the pushing member 25 and an outer surface of the connecting pipe 81 may be provided with a thread. As a result, the pushing member 25 may be approached toward the connecting pipe 81 in a screwing manner.

After the pipe 4 is inserted to the extent that the pipe 67 is substantially in contact with the seat 67, the pushing member 25 is brought closer to the connecting pipe path 81 side. This pushing action is performed as in the first embodiment in which the parallel part 341 penetrates the contact portion of the pipe 4 and the connecting pipe 81. As a result, the sealing and the fastening of the pipe 4 and the connection pipe 81 are completely made. As a result, it will be easily understood that the counterpart provided in a fixed position without moving against the pushing force of the pushing member becomes the connecting pipe 81.

Also in the case of this embodiment, the parallel portion 341 is provided in one body with the pushing member 4, the various advantages described in the first embodiment can be effective in the third embodiment as it is.

On the other hand, even in the case of the sheet member 67, it is possible to provide the

provisional assembly portion

65, 66 with the bar disclosed in the second embodiment on one side where the tube 4 is inserted. In this case, similarly to the second embodiment, the tube is temporarily assembled to obtain an effect of preventing the tube from being separated.

The spirit of the present invention is not limited to the accompanying embodiments, and those skilled in the art can variously present the embodiments of the same idea through various modifications of the embodiments, but are also included in the spirit of the present invention.

Claims

A tube through which the fluid flows;

A pushing member into which the tube is inserted;

A counterpart whose position is fixed with respect to the pushing force of the pushing member and into which the tube is inserted; And

Fitting device for a pipe comprising a parallel portion provided in one of the pushing member or the counterpart.
The method of claim 1,

The tube is provided with two,

The pushing member is provided with two for each pipe,

Both counterparts are inserted into the counterpart,

The two pushing members are fitting devices for pipes fastened to each other.
The method of claim 1,

A fitting device for a tube wherein the counterpart is a valve.
The method of claim 1,

And a sheet inserted into the tube so as to contact the insertion end surface of the tube.
The method of claim 4, wherein

And the seat includes a provisional assembly which preassembles the position with respect to the counterpart before the tube is fitted.
A left member into which the tube is inserted;

Another tube is inserted, the right member accessible to the left member;

An intermediate member into which the tube and the other tube are inserted; And

Fitting device for a pipe comprising a parallel portion provided in one body on at least one of the left member and the right member.
The method of claim 6,

The parallel part is a fitting device for a tube to dig at least one of the tube and the other tube when the left member and the right member approach each other.
The method of claim 6,

At least one of the left member and the right member is a fitting device for a tube for receiving the intermediate member.
The method of claim 6,

A fitting device for a tube accommodated in the intermediate member, the both sides includes a sheet which is in contact with the tube and the other tube, respectively.
The method of claim 6,

At least one of the left member and the right member, the fitting device for the pipe is fitted with the intermediate member.
The method of claim 6,

Fitting device for the pipe that the left member and the right member is screwed.
The method of claim 6,

Fitting device for a pipe that includes a groove provided on the inner surface side of the parallel portion.
Hollow left member is inserted into the tube;

The hollow member is inserted into the other tube, the right member is fastened to the left member;

At least one portion of the left member and the right member is mediated in a radial direction;

A protruding portion formed at one end of the intermediate member;

A recess formed in at least one of the left member and the right member to correspond to the protrusion, such that the protrusion is inserted into the fitting; And

Fitting device for a pipe comprising a parallel portion for performing a sealing action by deformation when the left member and the right member approaches each other.
The method of claim 13,

The left member and the right member are fastened by a relative rotational movement, the interference fit fitting device for the pipe is performed by the relative rotational movement.
The method of claim 13,

The protruding portion,

An inner inclined portion extending in a direction substantially perpendicular to an outer surface of the tube or the other tube;

An intermediate side corresponding inclined portion inclined in a direction parallel to the tube as compared with an angle formed by the inner inclined portion subsequent to the inner inclined portion; And

An outer inclined portion inclined in a direction orthogonal to the tube as compared to an angle formed by the intermediate side sloped portion following the middle side sloped portion;

Fittings for pipes provided by
The method of claim 13,

A singer parallel portion is provided in one body with the left member and / or the right member,

The inner side of the parallel portion is bounded by a tip inclined portion that is not parallel to the tube,

The outer side of the parallel portion is an outer corresponding inclined portion;

An inclination inclination portion in which the inclination decreases in a direction parallel to the pipe compared to an angle formed by the outer corresponding inclination portion subsequent to the outer corresponding inclination portion; And

A fitting inclined portion inclined in a direction orthogonal to the tube as compared to an angle formed by the outer corresponding inclined portion after the inclined inclined portion;

Fittings for pipes provided by
The method of claim 13,

The fitting portion is a fitting device for a pipe formed next to the parallel portion to the outer diameter side of the parallel portion.
The method of claim 13,

The parallel part is a fitting device for a pipe provided in at least one of the left member and the right member as a body.
Inserting different tubes into the left and right members: And

Fitting method for a pipe comprising the step of fitting the different pipes at once by the action of approaching the left member and the right member.
The method of claim 19,

The left member and the right member fitting method for a pipe to approach each other by the action of rotating between each other.