JPH074976U - Pipe fittings - Google Patents

Abstract

(57) [Abstract] [Purpose] A feature of the present invention is to provide a pipe joint capable of easily assembling the pipe joints to the pipes in order to position the distance between the pipes. [Structure] Through hole 3, which holds pipes 31 and 32 by combining first joint constituent member 5 and second joint constituent member 15
In the pipe joint 2 that forms 4, the through holes 3, 4
Has an elliptical shape and its inner wall has the pipes 31, 3
2 is processed into an uneven shape for preventing rotation. A knuckle 10 is formed at one end of the first joint component 5, a strut 20 is formed at one end of the second joint component 15, and the joint components 5, 5 are formed at the other end. A locking portion 25 is provided which locks each other in the state where 15 are combined. After the knuckle 10 is externally fitted to the support column 20, the joint constituent members are rotated to lock the joint constituent members 5 and 15 with the locking portions 25.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe joint for positioning a gap between pipes so that the pipes can be easily assembled to an expansion valve, for example.

[0002]

[Prior art]

 Conventionally, as a pipe joint for positioning the distance between two pipes, the one disclosed in Japanese Patent Laid-Open No. 4-266521 is known.

Among them, the pipe joint shown as the first embodiment in the above publication forms a through hole for holding a pipe by joining two joint constituent members in which two concave grooves are formed in parallel, A U-shaped guide is provided at the side end of each joint component, and a protrusion that can be fitted to the guide is extended to the side end of the other joint component, and is provided at the center of each joint component. It has a screw hole into which a tapping screw is inserted.

Assembling of a pipe to such a pipe joint is performed by placing the concave groove of one joint component member on the pipe and applying the concave groove of the second joint component member to the pipe, and then by guiding the guide portion. Alternatively, the projections are slid in the axial direction of the pipe to be fitted to each other, and the tapping screw is inserted into the screw hole, so that the pipe is assembled to the pipe joint. As a result, the distance between the pipes is determined.

Next, in the pipe joints shown as the second and third embodiments, as in the first embodiment, two concave grooves are formed in parallel so that a through hole for holding the pipe is formed. Although it is configured by combining two joint component members, a screw hole into which a tapping screw is fitted is formed near both side ends of one or the other joint component member.

When assembling pipes to such a pipe joint, after aligning two joint constituent members so that each pipe can be sandwiched by the recessed groove, a tapping screw is inserted into the screw hole and the pipe is attached to the pipe joint. It is done by being assembled. As a result, the space between the pipe and the pipe is positioned.

[0007]

[Problems to be solved by the device]

 However, among the pipe joints shown in the above publication, the pipe joint shown in the first embodiment requires the joint constituent members to slide along the pipe in order to fit the guide portion and the protruding portion. However, since there is almost no gap between the protrusion of one joint component and the guide of the other joint component, it is not easy to slide one joint component.

In addition, in the second and third embodiments, it is necessary to fix both end portions with tapping screws after combining one joint constituent member and the other joint constituent member, and therefore, it has been conventionally required. The number of man-hours required for assembling pipes is greater than that of the pipe fittings in.

However, the pipe joints exemplified in the first to third embodiments have a problem that the work of assembling the pipes into the pipe joints is troublesome and difficult.

Therefore, in view of the above problems, the present invention has an object to provide a pipe joint which is easy to assemble the pipe joint to the pipe.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the pipe joint according to the present invention is a pipe joint in which two joint constituent members are combined to form a through hole for holding a pipe. The inner wall is processed into a concave and convex shape that prevents rotation of the pipe, and one end of the two joint constituent members has a columnar column formed in one joint constituent member and the other joint constituent member. A hinge portion is provided that is formed and externally fitted so as to cover the column, and a knuckle that rotates around the column is provided, and the two joint component members are provided at the other ends of the two joint component members. In the assembled state, a locking portion that locks each other is provided.

Further, in a pipe joint formed by combining two joint component members, a pipe is inserted into each of the joint component members described above, and an engaging recess is provided on one of the split surfaces of the two joint component members. At the same time, an engaging convex portion that engages with the engaging concave portion is provided on the other side, and a holding piece that holds the pipe of the other joint forming member is provided on one joint forming member.

Furthermore, in a pipe joint formed by combining two joint constituent members, a pipe is inserted into each joint constituent member described above, and one joint constituent member is inserted in the axial direction of the pipe inserted therein. A storage hole for sliding and storing and a notch for slidingly inserting the pipe inserted in the one joint component in the radial direction of the pipe are formed in the other joint component, and the one joint component is formed. The surface of the joint constituent member or the inner surface of the accommodation hole may be processed to be concave and convex.

[0014]

[Action]

 Therefore, according to the pipe joint of the first aspect, after the knuckle formed at the one end of the other joint component is externally fitted to the columnar column formed at the one end of the one joint component, One joint component is rotated about the support column so that these joint component members are aligned with each other, whereby the joint component is formed by the engaging portion provided at the other end of the two joint component members. Since the members are locked, the pipe can be held between the one joint constituent member and the other joint constituent member, so that the above-mentioned problems can be solved.

Further, according to the pipe joint of the second aspect, the one joint constituent member and the other joint constituent member in which the pipe is inserted and fitted in advance, the one joint constituent member has the engaging recess and the other joint joint. The pipes can be assembled by engaging the engaging projections of the component members and holding the pipe inserted in the other joint component member with the holding pieces of one joint component member. Therefore, the above problem can be solved.

Further, according to the pipe joint of the third aspect, after only the pipe inserted into the other joint component is inserted into the notch of the one component by sliding in the radial direction of the pipe, The other joint component can be assembled by sliding the other joint component in the accommodation hole of the one joint component in the axial direction of the pipe and accommodating the pipe. Therefore, the above problem can be solved.

[0017]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

First, the pipe joint 2 shown as the first embodiment in FIGS. 1 to 4 is made of, for example, a synthetic resin, and has a first joint component member 5 and a second joint component member 15. It is composed of and.

Of these, the second joint component 15 has grooves 17 and 18 formed by notching the dividing surface 16 with the first joint component 5. These grooves 17 and 18 have a semi-elliptical cross section, and a plurality of elongated protrusions 19 extending in the forming direction of the grooves 17 and 18 are projected to treat the inner walls of the grooves 17 and 18 in an uneven shape. is doing.

Then, on one of the ends of the second joint-constituting member 15, there is formed a substantially columnar strut 20 that forms a hinge portion 24 with the knuckle 10 of the first joint-constituting member 5 described below. The column 20 is partially notched, and its axial dimension is somewhat smaller than the width of the dividing surface 16 of the second joint component 15. An engaging piece 21 extending along a dividing surface forming the engaging portion 25 with the hook 12 of the first joint component 5 described below is provided at the end opposite to the end where the column 20 is present. Have

On the other hand, the first joint component 5 is also formed with grooves 7 and 8 by notching the dividing surface 6 with the second joint component 15. These grooves 7 and 8 also have a semi-elliptical cross section, and a plurality of elongated projecting pieces 19 extending in the forming direction of the grooves 7 and 8 project to make the inner walls of the grooves 7 and 8 uneven. is doing.

A knuckle 10 that is curved so that the support column 20 of the second joint component 15 can be externally fitted is formed on one of the ends of the first joint component 5. In this knuckle 10, from the position where the split surface 6 of the first joint component 5 abuts the split surface 16 of the second joint component 15 around the support column 20, the tip of the knuckle 20 has the second joint configuration. It is rotatable in a range up to the position where it abuts against the side end of the member 15, and its axial direction has only one side open and the other side is a column of the second joint component member 15. It is closed by a stopper 11 having almost the same thickness as the width without 20.

At the end of the first joint component 5 opposite to the end where the knuckle 10 is present, a hook 12 having a key claw shape for locking the engagement piece 21 of the lower joint component 15. Is formed.

With the above structure, however, the pipe joint 2 has an elliptical shape that holds the pipe 31 with the groove 7 and the groove 17 by combining the first joint component member 5 and the second joint component member 15. The through hole 3 is formed, and the elliptical through hole 4 for holding the pipe 32 is formed by the groove 8 and the groove 18. The minor diameters of the through holes 3 and 4 are smaller than the diameters of the pipes 31 and 32, respectively.

A screw hole 23 penetrates from the split surface 16 of the second joint component 15 to the opposite side surface 22, and the split face 6 of the first joint component 5 is aligned with the screw hole 23. Screw holes 14 are provided, and the first joint component member 5 and the second joint component member 15 are screwed to each other by the tapping screws 33 which are fitted into the screw holes 23, 14.

Next, the procedure for assembling the pipes 31 and 32 in the pipe joint 2 having the above configuration will be described with reference to FIG.

First, the knuckle 10 of the first joint component 5 is externally fitted to the column 20 of the second joint component 15 by sliding the second joint component 15 in the axial direction of the column 20. As a result, the first joint component 5 is pivotally supported on the column 20. In this case, the stopper 11 can prevent the second joint constituent member 15 from sliding further than the end portion of the first joint constituent member 5.

Next, after the grooves 17 and 18 of the second joint component 15 are applied to the pipes 31 and 32 while the first joint structural member 5 is axially supported, the first joint component 5 is rotated. Move to place the grooves 7 and 8 on the pipes 31 and 32. Then, the first joint component 5 is strongly pressed to lock the hook 12 of the first joint component 5 to the engaging piece 21 of the second joint component 15. As a result, the pipe 31 is held by the through hole 3 formed by the groove 7 and the groove 17, and the pipe 32 is held by the through hole 4 formed by the groove 8 and the groove 18.

Finally, the tapping screw 33 is inserted into the screw holes 14 and 23, and the pipes 31 and 32 are assembled to the pipe joint 2.

Since the through-holes 3 and 4 of the pipe joint 2 have an elliptical shape in which the dimension of the minor axis is slightly smaller than the dimension of the diameter of the pipes 31 and 32, the pipes 31 and 32 may be fine. The inner wall of the through holes 3 and 4 and the curved surfaces of the pipes 31 and 32 have a large friction due to the unevenness processed on the inner wall by further projecting a plurality of projecting pieces 19, which causes the pipes 31 and 32 to move. Eliminates the possibility of rotation.

Although the pipe joint 2 which is divided into the first joint component 5 through the through holes 3 and 4 has been described above, the present invention is not limited to this, and the through holes 31 and 32 are divided. The pipe joint 2 may be divided without any division. Specific examples thereof will be described as second and third embodiments.

The pipe joint 2 shown as the second embodiment in FIGS. 5 to 8 is also made of, for example, a synthetic resin as in the first embodiment, but the pipe joint 2 has the first joint structure. It is composed of the member 40 and the second joint component member 50.

Of these, the first joint component 40 has surfaces 42 and 43 in which a through hole 41 for inserting the pipe 31 is formed near the end. The pipe 31 is already inserted into the through hole 41 when the first joint constituent member 40 and the second joint constituent member 50 are combined, and is fixed to the first joint constituent member 40 by the flanges 48, 48. Has been done. Further, an engaging concave portion capable of engaging with the engaging convex portion 55 of the second joint constituting member 50 is provided on a dividing surface 44 of the end portion on the opposite side of the end portion to the second joint constituting member 50 described below. 45 is formed.

Two holding pieces 46, 46 project from the upper side of the engagement recess 45. The sandwiching pieces 46, 46 are curved so as to face each other so as to sandwich the pipe 32 inserted into the second joint component 50. As a result, the distance between the tips of the holding pieces 46, 46 is smaller than the diameter of the pipe 32.

A step is formed on the inner wall of the sandwiching piece 46 so that the space between the sandwiching piece 46 and the sandwiching piece 46 is wide for sandwiching the flange 58 fitted on the pipe 32.

On the other hand, the second joint component 50 has surfaces 52 and 53 in which a through hole 51 into which the pipe 32 is inserted is formed at substantially the center. The pipe 32 is already inserted into the through hole 51 when the first joint component member 40 and the second joint component member 50 are combined, and is fixed to the second joint component member 50 by the flanges 58, 58. It is being touched. A key claw-shaped engaging projection 55 is projected from the upper end of the split surface 54 of the second joint component 50 with the first joint component 41.

Next, a procedure for assembling the pipes 31 and 32 in the pipe joint 2 having the above-described configuration will be described with reference to FIG.

First, the pipe 32 is at a position between the sandwiching pieces 46, 46 of the first joint component 40, and the surface 52 of the second joint component 50 contacts the lower end of the sandwiching piece 46. After bringing the second joint forming member 50 to such a position, the second joint forming member 50 is pushed to some extent in the radial direction of the pipe 32 until the engaging convex portion 55 engages with the engaging concave portion 45. combine.

As a result, the first joint constituent member 40 and the second joint constituent member 50 are engaged with each other, and the pipe 32 and the flange 58 are clamped by the clamping pieces 46 of the first joint constituent member 40. , The pipes 31 and 32 are assembled to the pipe joint 2.

In the second embodiment described above, the fitting of the pipe 32 and the flange 58 is performed by the two holding pieces 46, 46 formed at the end of the first joint component 40, but it is inevitable. However, the present invention is not limited to this. As in the third embodiment shown in FIG. 9, the pipe 32 and the flange 58 are separated from each other by the sandwiching piece 61 that extends slightly from the dividing surface 44 and the sandwiching piece 60 that extends largely in an arc. It may be sandwiched.

In addition, in the second or third embodiment, it is assumed that the engaging recessed portion 45 is formed in the first joint forming member 40 and the engaging protruding portion 55 is formed in the second joint forming member 50. Although described, the invention is not necessarily limited to this, and the engaging protrusion may be formed on the first joint component 40 and the engaging recess may be formed on the second joint component 50.

Therefore, according to the second and third embodiments having the above-described configurations, it is only necessary to combine the first joint component 40 and the second joint component 50, and the tapping screw is unnecessary. Therefore, since the number of parts can be reduced, the manufacturing cost of the pipe joint 2 can be suppressed.

Further, in the above, as the second and third embodiments, the first joint constituent member 40 and the second joint constituent member 50 are combined using the engagement concave portion 45 and the engagement convex portion 55. However, the present invention is not limited to this, and the second joint component may be simply inserted into and housed in the first joint component, and a specific example thereof is the fourth embodiment. As described below.

The first joint component 70 shown in FIGS. 10 to 12 is made of, for example, synthetic resin, and has a through hole 71 into which the pipe 31 is inserted and which is formed near the end 72. It has 73. The pipe 31 has already been inserted into the through hole 71 when the joint constituent members 70 and 75 are combined, and is fixed to the first joint constituent member 70 by the flanges 48, 48.

On the side opposite to the end portion, a notch 76 having the same width as the diameter of the pipe 32 and formed over the surfaces 72 1 to 73, and the second joint component 75 described below are the same. A storage hole 77, which has the same diameter and the same thickness and is formed from the surface 73 to the center of the pipe joint 2, is formed to communicate with each other. As a result, a step is formed in the communicating portion between the notch 76 and the storage hole 77 due to the difference between the diameter of the pipe 32 and the diameter of the second joint component 75.

On the other hand, the second joint component 75 has a ring shape made of, for example, aluminum having a through hole 78 into which the pipe 32 is inserted, and the outer peripheral surface of the second joint constituent member 75 has the second joint. In order to prevent the constituent member 75 from rotating, it is processed into an uneven shape. The pipe 32 is already inserted into the through hole 78 when the first joint constituent member 70 and the second joint constituent member 75 are combined with each other, and the pipe 32 is opposite to the surface in contact with the first joint constituent member 70. It is fixed to the second joint component 75 by forming a flange 59 on the side.

Next, the procedure for assembling the pipes 31 and 32 in the pipe joint 2 having the above-described configuration will be described with reference to FIG.

First, only the pipe 32 is slid in the axial direction of the pipe 32 and inserted into a position where it abuts against the inner wall of the notch 76 of the pipe joint 2, and then the second joint in which the pipe 32 is fitted. The constituent member 75 is slid in the axial direction of the pipe 32 and accommodated in the accommodation hole 77. As a result, the pipes 31 and 32 are assembled to the pipe joint 2.

In the above description, the uneven shape for preventing the rotation of the second joint component 75 is treated on the outer peripheral surface of the second joint component 75, but the invention is not limited to this, and the first joint component 75 is not limited to this. The inner wall of the storage hole 77 of the joint component 70 may be processed to have an uneven shape.

[0050]

[Effect of device]

 As described above, according to the invention of the present application as set forth in claim 1, a columnar column formed at one end of one joint component is formed at one end of the other joint component. After fitting the outer knuckle, one of the joint constituent members is rotated by rotating the one joint constituent member around the strut as a shaft, so that the joint provided at the other end of the two joint constituent members. Since the joint constituent members are locked to each other at the stopper, the pipe is held between the one joint constituent member and the other joint constituent member, so that the pipe assembling work can be performed easily.

According to the second aspect of the above invention, the one joint constituent member and the other joint constituent member into which the pipe is inserted are provided in the engaging recesses of the one joint constituent member. The pipe can be assembled by engaging the engaging convex portion of the other joint component member and fitting the pipe inserted in the other joint component member into the sandwiching piece of the one joint component member. Easy to assemble pipes.

Further, according to the third aspect of the invention of the above, according to the second aspect of the invention of the present application, only the pipe inserted into the other joint component member is inserted. Slide in the radial direction of the pipe and insert it into the notch of one joint component, and then slide the other joint component in the axial direction of the pipe and store it in the storage hole of one joint component. Since it can be assembled, the pipe assembly work can be done easily.

[Brief description of drawings]

1 (a) and 1 (b) are explanatory views showing a configuration of a pipe joint of a first embodiment according to the present invention.

2 (a) and (b) are the first pipe joints of the same as above. FIG.
It is explanatory drawing which showed the structure of the joint structure member of FIG.

3 (a) and (b) are the second pipe joints of the same as above.
It is explanatory drawing which showed the structure of the joint structure member of FIG.

FIG. 4 is an explanatory view showing a procedure for assembling a pipe by the pipe joint of the same.

5 (a) and 5 (b) are explanatory views showing a structure of a pipe joint of a second embodiment according to the present invention.

FIG. 6 (a) and (b) are the first of the pipe joints of the same.
It is explanatory drawing which showed the structure of the joint structure member of FIG.

7 (a) and (b) are the second pipe joints of the same as above.
It is explanatory drawing which showed the structure of the joint structure member of FIG.

FIG. 8 is an explanatory view showing a procedure of assembling a pipe by the pipe joint of the same.

9 (a) and 9 (b) are explanatory views showing a structure of a pipe joint of a third embodiment according to the present invention.

FIG. 10 is an explanatory view showing a configuration of a pipe joint of a third embodiment according to the present invention.

FIG. 11 is a cross-sectional view taken along line AA of the above pipe joint.

FIG. 12 is an explanatory view showing a procedure of assembling a pipe by the pipe joint of the same.

[Explanation of symbols]

 2 Pipe Joints 3, 4 Through Holes 5 First Joint Component 6 Split Surface 10 Knuckle 12 Locking Part 15 Second Joint Component 16 Split Surface 20 Strut 24 Hinge Part 25 Locking Part 31 Pipe 32 Pipe 40 1st Component member 41 through hole 44 split surface 45 engagement recess 46 sandwiching piece 50 second joint component member 51 through hole 54 split surface 55 engagement convex portion 60, 61 sandwiching piece 70 first joint component member 71 through hole 75 Second Joint Component 76 Notch 77 Storage Hole

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical display location F25B 41/00 H (72) Creator Yoshihisa Fujisawa 39 Chiba, Chiyo-ji, Konan-cho, Osato-gun, Saitama Stock Company Zexel Gangnam Factory

Claims (3)

[Scope of utility model registration request] 1. In a pipe joint in which two joint constituent members are combined to form a through hole for holding a pipe, the through hole is formed into an elliptical shape, and an inner wall of the through hole is processed into an uneven shape for preventing rotation of the pipe. , One end of the two joint component members has a columnar column formed on one joint component member, and the other joint component member is externally fitted so as to cover the column column. A hinge portion having a knuckle that rotates about the center is provided, and a locking portion that locks the two joint component members with each other in a combined state is provided at the other end of the two joint component members. Pipe fittings characterized by being 2. A pipe joint formed by combining two joint component members, wherein a pipe is inserted into each of the joint component members, and an engaging recess is provided on one of split surfaces of the two joint component members. A pipe joint characterized in that an engaging convex portion that engages with the engaging concave portion is provided on the other side, and a holding piece that holds the pipe of the other joint forming member is provided on one joint forming member. 3. A pipe joint formed by combining two joint constituent members, wherein a pipe is inserted into each joint constituent member, and one joint constituent member is slid in the axial direction of the pipe fitted therein. And a notch into which the pipe inserted into the one joint component is slid in the radial direction of the pipe and formed into the other joint component, and the one joint component is formed. The pipe joint, characterized in that the surface thereof or the inner surface of the storage hole is processed to be uneven.