JP4712227B2 - Pipe fitting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe joint for resin pipes used for water supply / hot water supply pipes and the like.
[0002]
[Prior art]
Conventionally, various pipe joints for joining resin pipes for water supply and hot water supply pipes have been provided. For example, there is a joint disclosed in Japanese Patent Laid-Open No. 11-280981. In this joint, a joint body is formed in a cylindrical shape, and an abutting surface and a receiving surface are formed therein. On the other hand, a lock ring for positioning and fixing the pipe is provided, and this lock ring is formed in an annular shape, and a plurality of restricting pieces projecting inward from the inner peripheral edge thereof are formed.
[0003]
At the time of joining the pipe, first, the lock ring is attached by screwing the pressing body in a state in which the lock ring is engaged with the receiving surface in the joint body, and has a flange at the end of the pipe, A pipe fitted with a cylindrical core ring is inserted into the joint body through a pressing body.
As a result, the restricting piece of the lock ring engages with the pipe to restrict the pipe from coming off. Thus, when a resin pipe is inserted into a joint and joined, it is common to insert a predetermined amount of the pipe into the joint and position and fix it at an appropriate position.
[0004]
By the way, when joining pipes with these pipe joints, incomplete joining may cause inconveniences such as pipe disconnection or water leakage. For this reason, it is necessary to check the connection state by confirming the insertion state of the core ring, whether or not a predetermined amount of pipe is inserted, and as means for checking the insertion state of the core ring, for example, Japanese Patent No. 2975019 In addition, there is, for example, Japanese Patent Application Laid-Open No. 2000-88154 as a means for confirming the insertion state of the pipe, and it is assumed that the operator follows the construction procedure. In the case where the other person confirms the joining condition, the problem of lack of reliability remains as before.
[0005]
For this reason, in Japanese Patent Laid-Open No. 2000-266252, a confirmation hole is provided so that the joined state of the pipe can be visually recognized from the confirmation hole. As described above, a confirmation means for confirming the joining state of the pipe by visually observing a predetermined portion provided in the pipe joint or by directly detecting a water leak has been generally used.
[0006]
[Problems to be solved by the invention]
However, according to the visual confirmation means such as Japanese Patent Laid-Open No. 2000-266252, or the confirmation means for confirming water leakage, the confirmation work becomes difficult if the working environment is dark or narrow, and therefore, the joining is surely performed. There was a fear that it was not.
[0007]
In addition, this pipe joint has a seal structure that seals on the inner periphery of the pipe. In such a seal structure, it is difficult to increase the volume of the seal ring for securing a certain water passage diameter. There was a problem that the life of the ring was shortened.
[0008]
In addition, since pipes are usually manufactured based on the outer diameter of the pipe, the stability of dimensions and surface conditions may be lacking. The joint means that seals the outer peripheral surface only with the elasticity of rubber has a sealing performance. There is a problem of becoming unstable.
[0009]
The present invention was developed as a result of earnest research to solve the conventional problems, and is a pipe joint that can reliably join the pipe while easily confirming the insertion state, and also has high sealing performance. It is an object to provide a pipe joint capable of maintaining the above.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is provided with a seal member that seals the outer periphery or the inner periphery of the pipe and a retaining member that prevents the pipe from being removed in the joint body, and these members are nuts or bushes . In a pipe joint incorporated in a joint body with a certain joint member, a vibration member is provided in the inner part of the inner side of the joint body , and an operating member is attached to the tip of the pipe. when inserting the pipe into a tube joint so as to generate vibration or sound playing the vibration member by said actuating member by rotating the pipe.
[0012]
According to a second aspect of the present invention, the vibrating member is provided with a vibrating piece in the centripetal direction, and the vibrating piece is repelled by an operating member attached to the tip of the pipe to generate vibration or sound. .
[0013]
In the invention according to claim 3 , the operating member is provided on a part of the outer periphery of the tip of the in-core mounted on the inner diameter side of the pipe, and the invention according to claim 4 is characterized in that the operating member includes the pipe tip surface. It was so that is挾着between-core tip of the flange portion.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Below, the embodiment of the pipe joint in the present invention is described. In FIG. 1, reference numeral 10 denotes a joint body, and reference numeral 11 denotes a joint member. The joint member 11 is a bush incorporated in the joint body 10 or a nut described later. These are formed into a cylindrical shape from a bronze-based metal and are fitted and connected to each other. 12 is an O-ring for sealing the joint body 10 and the bush 11, and 13 is a retaining ring provided to prevent the bush 11 from coming out of the joint body 10. In addition to the pipe 15 being rotatable with respect to the joint body 10, when the member to be jointed 11 is a bush as described above, the bushing is made by connecting the joint body 10 and the bush 11 with the retaining ring 13. It becomes a to-be-joined member which can give rotation, and the bush 11 becomes rotatable with respect to the joint main body 10.
[0015]
The pipe 15 inserted into the joint body 10 is formed into a tubular shape by a material such as cross-linked polyethylene or polybutene, and the pipe 15 is used for water supply, hot water supply piping, and the like. An in-core 16 is attached to a joint portion with the joint body 10, the in-core 16 is attached to the inner diameter side of the pipe 15, and an operating member 17 is provided on a part of the outer periphery of the tip of the in-core 16.
[0016]
On the other hand, a vibration member 18 that can vibrate is fixed to a position corresponding to the in-core 16 in the joint body 10 by means such as fitting, and a vibration piece 19 is provided on the vibration member 18 in a centripetal direction. ing. When the bush 11 is rotated, the vibration member 18 rotates together with the rotation of the bush 11.
[0017]
Reference numeral 14 denotes a seal member attached to the inner peripheral side of the bush 11, and the seal member 14 seals the outer periphery of the pipe 15 inserted into the joint body 10.
Reference numeral 20 denotes a retaining member made of a ring-shaped lock ring, which is provided with an inclined portion 20a so that a force is applied in the direction in which the pipe 15 is fixed, and the inclined portion 20a prevents the pipe 15 from being inserted. ing.
Reference numeral 21 denotes a leaf spring. The annular member 22 provided in an annular shape in a state where the leaf spring 21 is overlapped with the retaining member 20 is fitted into the annular groove 11 a on the inner peripheral side of the bush 11, so that the retaining member 20 is fitted. Wearing.
[0018]
In this embodiment, the pipe 15 is inserted into the joint body 10, and when the predetermined amount of insertion is made, the pipe 15 or the bush 11 is rotated, and the vibration member 19 of the vibration member 18 is moved by the operating member 17 on the outer periphery of the in-core 16. I play it to emit vibrations and sounds.
[0019]
FIG. 3 is a sectional view showing a second embodiment of the pipe joint according to the present invention. In the pipe joint according to the present embodiment, the joint body 30 is integrally provided by screwing with the bush 31 which is a member to be joined. In the embodiments after this embodiment, the same portions as those in the above embodiments are represented by the same reference numerals.
[0020]
A seal member 14 is provided in the joint body 30, and the outer periphery of the pipe 15 is sealed with the seal member 14. Reference numeral 38 denotes a vibrating member having a vibrating piece 39 that can vibrate. The bush 31 is attached by screwing in a state in which the retaining member 20 having the inclined portion 20a is incorporated in the joint body 30 so as to be adjacent to the vibrating member 38. ing.
[0021]
The in-core 36 which is an operation member is formed into a cylindrical shape by a thin plate material, and is formed so as to be folded back to provide a groove 36a. The pipe 15 is fitted and fixed in the groove 36a, and the in-core 36 and the pipe 15 are integrated. Provided. An operating piece 37 is provided by cutting out the folded portion, and the vibrating piece 39 is repelled by the operating piece 37.
[0022]
FIG. 5 is a sectional view showing a third embodiment of the pipe joint according to the present invention.
A nut 25 is screwed and integrated in the joint body 40 in a state in which the retaining members 20 and 20 having the seal member 14, the leaf spring 21, and the inclined portion 20 a are overlapped in the holding sleeve 27. The in-core 16 is inserted in the joint body 20a in advance. Reference numeral 12 denotes an O-ring for sealing the joint body 40 and the holding sleeve 27.
[0023]
The vibration member 23 in the present embodiment is provided so that the vibration piece 24 having a substantially triangular cross section is directed in the centripetal direction, and the vibration piece 24 protrudes toward the pipe 15 as the pipe 15 is inserted in the insertion direction indicated by the arrow. When a predetermined amount of the pipe 15 is inserted and the pipe 15 is rotated, the actuating member 17 provided on a part of the outer periphery of the in-core 16 attached to the inner peripheral side of the pipe 15 causes the vibrating piece 24 to move. I try to play it.
[0024]
FIG. 7 shows a fourth embodiment of the pipe joint of the present invention.
47 is a bush, and a retaining member 48 provided with a groove-like portion 48 a for preventing the vibration member 45, the seal member 14, the leaf spring 21, and the pipe 15 from being detached is mounted between the bush 47 and the joint body 44. The joint body 44 is screwed in the state.
Further, in this embodiment, 42 is an operating member provided separately from the pipe 15 and the incore 16 by synthetic resin or the like, and 43 is an operating piece provided protruding from the operating member 42 in a claw shape. . In the pipe 15 with the in-core 16 mounted on the inner diameter side, the actuating member 42 is provided so as to be sandwiched between the distal end surface of the tubular pipe 15 and the flange 16a at the distal end of the in-core 16, and in FIG. When a predetermined amount of the pipe 15 is inserted, the operating piece 43 is elastically deformed in the bending direction. When the pipe 15 is rotated in this state, the operating piece 43 causes the vibrating piece 46 of the vibrating member 45 mounted in the joint body 44 to be moved. Play it to generate vibrations and sounds.
[0025]
Next, the operation of the above embodiment will be described.
In FIG. 1, when the pipe 15 is rotated after the pipe 15 is inserted, the inserted state of the pipe 15 can be confirmed. When the pipe 15 is inserted to a predetermined position of the bush 11, the operating piece 17 provided on the in-core 16 repels the vibrating piece 19 provided on the vibrating member 18 so as to vibrate, thereby generating vibration and sound. By feeling this vibration or listening to the sound, it can be easily confirmed even in a dark place, a narrow place, etc., and there is no possibility that the pipe 15 is securely joined at a predetermined position and pulled out or causes water leakage.
Furthermore, since it is possible to perform confirmation by means of visual recognition in addition to the feeler and hearing to feel vibrations and to hear sound, more reliable joining can be performed.
Since the joint body 10 and the bush 11 of the first embodiment are not integrated, the bush 11 side provided on the outer periphery of the pipe 15 may be rotated.
[0026]
When joining the pipe 15, it is only necessary to insert the pipe 15 fitted with the in-core 16 into the bush 11, and the seal member 14 is tightly sealed on the outer peripheral surface of the pipe 15, and the inclined portion of the retaining member 20 is sealed. The front end side of 20a bites into the surface of the pipe 15 to maintain this joined state and prevent the pipe 15 from being pulled out.
[0027]
The seal member 14 can be increased in volume, and can be reliably sealed by the seal member 14, and the pipe 15 is retained by the retaining member 20. Thus, it is possible to maintain a high sealing performance over a long period of time.
Further, when the member to be coupled cannot be rotated with respect to the joint body as in the other embodiments, the intended purpose can be achieved by rotating the pipe 15.
[0028]
As shown in FIG. 5, if the vibration member 23 is formed in a substantially triangular shape so that the vibration piece 24 protrudes toward the pipe 15 in accordance with the insertion direction of the pipe 15, the operation piece 17 is matched to the minute insertion amount of the pipe 15. Can play the vibrating piece 24, and the joining accuracy can be further increased.
[0029]
On the other hand, in the joint main body 44 in FIG. 7, when the pipe 15 is inserted, the claw-like operating piece 43 provided on the operating member 42 protrudes in the outer peripheral direction as it is inserted, so that the vibrating piece 46 is repelled. In addition to confirming the joining state of the pipe 15 with respect to the joint body 44, it is possible to confirm whether or not the in-core 16 has been securely inserted into the pipe 15.
[0030]
The embodiments of the present invention all have a structure in which the outer periphery of the pipe 15 is sealed by the seal member 14, but the inner periphery of the pipe 15 may be sealed. If it is formed longer, larger vibrations and sounds can be generated, and the confirmation work becomes easier.
[0031]
【The invention's effect】
As is clear from the above, according to the present invention, a pipe or bush is provided rotatably, and by rotating either of these, the insertion state of the pipe can be easily confirmed, and the pipe is securely joined. It is a pipe joint that can.
[0032]
And since the to-be-joined member is integrated with the joint main body, it can rotate, maintaining sealing performance.
[0033]
The insertion state of the pipe can be confirmed by tactile sensation or hearing, and it can be easily confirmed whether the predetermined insertion amount has been reached even in a dark place or a narrow work environment.
[0034]
Moreover, since each member for generating vibration or sound can be formed by each member constituting the pipe joint, the structure is not complicated, the cost can be suppressed, and the in-core and the pipe The insertion state of can also be confirmed.
[0035]
In addition, it is possible to check each joint state of the joint, pipe and in-core, and the internal mechanism at the time of joining is simple unlike mechanical indicators, so it is highly reliable and always shows an accurate insertion state. be able to.
[0036]
Further, after the joining work, it is a pipe joint that can be easily confirmed by others after the work and is generally widely used.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a pipe joint according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view showing a second embodiment of the pipe joint according to the present invention.
4 is a cross-sectional view taken along line BB in FIG.
FIG. 5 is a cross-sectional view showing a third embodiment of the pipe joint according to the present invention.
6 is a cross-sectional view taken along line CC in FIG.
FIG. 7 is a sectional view showing a fourth embodiment of the pipe joint according to the present invention.
FIG. 8 is a sectional view showing a fourth embodiment of the pipe joint in the present invention.
9 is a cross-sectional view taken along line DD of FIG.
FIG. 10 is a perspective view showing an operating member.
[Explanation of symbols]
10 Joint body 11 Joint member (bush)
14 Seal member 15 Pipe 16 In-core 17 Actuating piece 18 Vibrating member 19 Vibrating piece 20 Stopping member 42 Actuating member

Claims (4)

Comprising a stop member for retaining the sealing member and the pipe to seal the outer periphery or inner periphery of the pipe into the fitting body, the pipe joint incorporating into the fitting body with the joint member with these members in a nut or bushing, said the innermost side inside the vibration member of the joint body is provided, and, together with mounting the actuating member on the distal end portion of the pipe, when inserting the pipe into the rear portion side of the joint body, the vibration by rotating the pipe A pipe joint characterized in that a member is repelled by the actuating member to generate vibration or sound. 2. The pipe joint according to claim 1, wherein the vibration member is provided with a vibration piece in a centripetal direction, and the vibration piece is repelled by an operation member attached to a tip portion of a pipe to generate vibration or sound. . The pipe joint according to claim 1 or 2, wherein the operating member is provided on a part of the outer periphery of the tip of the in-core mounted on the inner diameter side of the pipe. The pipe joint according to claim 1 or 2, wherein the actuating member is attached between a pipe front end surface and a flange portion of the in-core front end.

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