JP3304075B2 - Fittings for mixing faucets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for a mixing faucet used for connecting a mixing faucet to a resin pipe.

[0002]

2. Description of the Related Art For example, a pair of introduction parts (water supply port and hot water supply port)
The joint for a hot and cold water mixing faucet provided with is composed of a pair of tubular bodies, one tubular body connects a water supply port and a water supply pipe, and the other tubular body connects a hot water supply port and a hot water supply pipe. It has become.

The pair of cylindrical bodies are inserted into a support wall, and a pair of nuts are screwed into male screw portions formed on the outer periphery of the cylindrical body from both sides of the support wall, and the support wall is tightened with the nuts. Mounted on the support wall.

[0004]

However, when the nut is rotated and tightened or loosened when attaching or detaching the tubular body to or from the support wall, the tubular body has an axial line of a male screw portion. A force acts in the direction of rotation about the center. For this reason, in a state where a pipe constituting a water supply pipe or a hot water supply pipe is connected to the tubular body, if the pipe is made of resin and has low rigidity, the tubular body rotates with the rotation of the nut, There was a possibility that the pipe was deformed due to twisting.

The present invention has been made by focusing on the problems existing in the prior art as described above. It is an object of the present invention to provide a joint for a mixing faucet in which even if the nut is rotated while the pipe is connected, the pipe is not likely to be deformed due to twisting or the like.

[0006]

In order to achieve the above object, a joint for a mixing faucet according to the first aspect of the present invention is connected to an introduction part of the mixing faucet at a first pipe connection portion, Second
A plurality of tubular bodies connected to a resin pipe at a pipe connection portion are provided, a male screw portion is formed on the outer periphery of each tubular body, and each tubular body is inserted into a mounting hole formed in a support wall to form a pair. The nuts are screwed into the male screw portions from both sides of the support wall, and each cylindrical body is attached to the support wall by tightening the support wall with the nut. A joint for a mixing faucet in which an axis and a rotation axis of the nut screwed into a male screw portion of the cylindrical body intersect at a predetermined angle, the connection having an insertion hole through which the cylindrical body is inserted. A plurality of tubular members are connected by the member, and a locking portion that engages with each tubular member and the connecting member is provided to prevent the tubular body and the connecting member from rotating relative to each other , and further, Previous
The connecting member has a pair of nuts screwed into the male screw portion of the cylindrical body.
The gist of the present invention is that a regulating member for regulating the rotation of one of the two is provided .

A joint for a mixing faucet according to the second aspect of the present invention.
Is connected to the inlet of the mixing faucet at the first pipe connection
Then, it is connected to the resin pipe at the second pipe connection part.
Equipped with a plurality of tubular bodies, forming an external thread on the outer periphery of each tubular body
Then, insert each tubular body into the mounting hole
A pair of nuts are screwed into the male thread from both sides of the support wall and
Supports each cylindrical body by tightening the support wall with nuts
It is configured to be mounted on the wall and connected to each cylindrical body.
The pipe is connected with the axis of the pipe and the male thread of the cylindrical body.
Intersecting at a predetermined angle with the rotation axis of the nut
A fitting for a faucet, wherein the tubular body is inserted therethrough.
Connecting a plurality of cylindrical bodies with a connecting member having a hole
In addition, the outer peripheral surface of the first pipe connection portion of each cylindrical body is opposed to each other.
At the position, a pair of locking surfaces are cut out in a flat shape, and
The inner peripheral surface of the hole is engaged with the locking surface of the first pipe connection portion.
A locking surface is provided and inserted into the insertion hole according to the engagement relationship between the two locking surfaces.
To prevent relative rotation between the passed cylindrical body and the connecting member.
The connecting member is further screwed into a male screw portion of a cylindrical body.
Restricts rotation of one of the paired nuts
The gist is that a regulating member is provided. According to a third aspect of the present invention, there is provided a joint for a mixing faucet according to the first or second aspect , wherein the insertion hole is a long hole, and the tubular body can move in the length direction. The gist is that it has been configured.

[0008] joint for water mixing in the embodiment described in claim 4 is the invention according to any one of billed to claim 3 claim 1, inwardly projecting on the second pipe connecting portion The gist is that a lock ring having a plurality of restriction pieces is provided, and the pipe is inserted into the second pipe connection portion so that the pipe is engaged with the restriction piece of the lock ring to prevent the pipe from coming off. I do.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings, in which the present invention is embodied in a joint for connecting a water supply pipe to a hot water mixing faucet installed in a bathroom such as a unit bath.

As shown in FIG. 1, a hot and cold water mixing faucet (not shown) has a water guide pipe 11a as an introduction part for introducing water into the faucet, and an introduction water for introducing hot water into the faucet. A hot water pipe 11b is provided as a part. And the water pipe 11a
A water supply pipe and a hot water supply pipe are connected to the hot water supply pipe 11b via a fitting for a mixing faucet, respectively, and water or hot water or a mixture of both is supplied from a discharge port (not shown) of the hot / water mixing faucet. It is designed to be spouted.

As shown in FIGS. 1 and 4, the joint for the mixing faucet has a pair of cylindrical bodies 12a and 12b.
Each of the tubular bodies 12a and 12b has a substantially L-shape as shown in FIG. 2, and has communication passages 13 opened at both ends. Further, a first pipe connection portion 14 and a second pipe connection portion 15 are provided at both ends of each of the cylindrical bodies 12a and 12b. Then, the first pipe connection portion 1 of the one cylindrical body 12a
A water pipe 11a of a hot and cold water mixing faucet is connected to 4 and a pipe 16a constituting a water supply pipe is connected to the second pipe connection portion 15. Also, the other cylindrical body 12b
Hot water mixing pipe faucet pipe 11b
Is connected, and a pipe 16b constituting a hot water supply pipe is connected to the second pipe connection portion 15.

As shown in FIGS. 1, 2 and 4, a first female thread 17 is formed on the inner peripheral surface of the first pipe connecting portion 14 of each of the cylindrical bodies 12a and 12b. In the first female screw portion 17, the water pipe 11a of the hot water mixing faucet and the hot water pipe 1 are connected to the first pipe connection portions 14 of the cylindrical bodies 12a and 12b.
1b are screwed respectively. A pair of locking surfaces 18 as locking portions are provided on the outer peripheral surfaces of the first pipe connection portions 14 of the cylindrical bodies 12a and 12b at opposing positions.
Are cut out in a flat shape.

Further, on the outer peripheral surface of the first pipe connection portion 14, a male screw portion 19 is formed in an arc surface excluding the locking surface 18. Each of the cylindrical bodies 12a and 12b is provided with a pair of mounting holes 2 formed in a bathroom wall plate 20 as a support wall.
1, and a pair of nuts 22, 23 are screwed into the male screw portion 19 from both sides of the wall plate 20 in this state, and the wall plate 20 is tightened by the nuts 22, 23. It can be attached.
The rotation axes of the nuts 22 and 23 are connected to the second pipe connection portion 15.
Are perpendicular to the axes of the pipes 16a and 16b connected to the first and second pipes.

The nut 22 outside the wall plate 20, ie, the outdoor side
A packing 24 and a fixing plate 25 as a connecting member are interposed between the wall plate 20 and the wall plate 20 in this order from the wall plate 20 side. Further, a packing 26 and a polypropylene sliding packing 27 are interposed in order from the wall plate 20 side inside the wall plate 20, that is, between the nut 23 on the indoor side and the wall plate 20. The interior and exterior communication through the mounting hole 21 is sealed by the two packings 24 and 26 and the sliding packing 27, and the smooth packing operation of the nut 23 is prevented by the contact with the packing 26 from being prevented by the sliding packing 27. To prevent it.

The fixing plate 25 has a pair of insertion holes 28.
These insertion holes 28 have both cylindrical bodies 12a and 12a.
b is inserted. And by this, both cylindrical bodies 12
a and 12b are connected via a fixing plate 25. As shown in FIG. 3, the insertion hole 28 is formed in a long hole shape, and the tubular bodies 12 a and 12 b can move in the length direction of the insertion hole 28 while being inserted into the insertion hole 28. It has become. Then, the two cylindrical bodies 12a, 12
The interval between b can be arbitrarily changed between the minimum P1 and the maximum P2.

A locking surface 29 is provided on the inner peripheral surface of the insertion hole 28 as a locking portion for engaging with the locking surface 18 of the first pipe connection portion 14. Due to the engagement relationship, the cylindrical bodies 12a and 12b inserted into the insertion holes 28 and the fixed plate 25 cannot be relatively rotated. Further, stoppers 30 as regulating members are formed by bending at upper and lower edges of the fixing plate 25. The interval between the upper and lower stoppers 30 is set so as to correspond to the outer diameter between the two opposing sides of the nut 22, and the opposing two sides of the nut 22 engage with both stoppers 30 as shown in FIG. By doing so, the rotation of the nut 22 is regulated.

As shown in FIG. 2 and FIG.
A second female screw portion 31 is formed on the inner peripheral surface of the second piping connection portion 15 of the first and second pipes 12a and 12b. Further, a cylindrical push ring 32 having a male screw portion 32a which can be screwed into the second female screw portion 31 at its tip is screwed. An annular receiving surface 33 is provided on the inner peripheral surface of the second pipe connection portion 15 in a stepped shape at an inner part deeper than the second female screw portion 31. A pair of lock rings 34 are disposed between the receiving surface 33 and the distal end surface of the press ring 32 with a ring-shaped spacer 35 interposed therebetween.

The lock ring 34 includes an annular base ring 36 and a plurality of restricting pieces 37 formed to protrude inward from an inner peripheral edge of the base ring 36. The restriction piece 37 of the lock ring 34 is a base ring 36
Are bent so as to form an angle of about 45 degrees with respect to the second pipe connection part 15, and the bending direction is disposed inside the second pipe connection part 15 at the inner side. When the distal ends of the pipes 16a, 16b are inserted into the second pipe connecting portions 15 of the tubular bodies 12a, 12b, the restricting pieces 37 of the lock ring 34 bite into the outer surfaces of the pipes 16a, 16b, and the pipes 16a, 16b To the second pipe connection 15
It is designed to keep from falling off.

The lock ring 34 is made of stainless steel, and is formed in a predetermined shape as described above by a press molding method. The lock ring 34 is preferably formed to have a thickness in the range of 0.2 to 0.6 mm and to be formed in the range of 0.3 to 0.5 mm in order to maintain a predetermined strength. More preferred.

The pipes 16a and 16b are formed in a cylindrical shape from a polyolefin, for example, cross-linked polyethylene or polybutene. In the present embodiment, a nominal diameter of 10A having an outer diameter of 13 mm and an inner diameter of 9.8 mm, or a nominal diameter of 1A having an outer diameter of 17 mm and an inner diameter of 12.8 mm is used.
3A's are used.

A core ring 38 made of brass or bronze is attached to the ends of the pipes 16a and 16b. The core ring 38 has a cylindrical shape, and is fitted into the pipes 16a and 16b until a flange 38a provided at one end comes into contact with the end surfaces of the pipes 16a and 16b. The pipes 16a and 16b are prevented from being deformed inward due to thermal expansion or the like.

Next, the operation of the joint for a mixing faucet constructed as described above will be described. When connecting the water supply pipe and the hot water supply pipe to the hot and cold water mixing faucet using the mixing faucet coupling of the embodiment, first, the coupling is assembled and attached to the wall plate 20 of the bathroom.

That is, the receiving surface 33 in the second pipe connection portion 15
After disposing a pair of lock rings 34 with a spacer 35 interposed therebetween, the push ring 32 is screwed to the second pipe connection portion 15. At the same time, a nut 22 is screwed into the male screw portion 19 of the first pipe connection portion 14, and then the fixing plate 2
5 is attached from the distal end side of the first pipe connection part 14 to connect the tubular bodies 12a and 12b, and further, the packing 24 is attached to the first pipe connection part 14 of each of the tubular bodies 12a and 12b. At this time, the stopper 30 of the fixing plate 25 is
Are attached so as to engage with two opposite sides of the.

Subsequently, the cylindrical bodies 12a and 12b are moved in the longitudinal direction of the insertion hole 28 so that the cylindrical bodies 12a and 12b are moved.
The distance between a and 12b is set so as to correspond to the distance between a pair of mounting holes 21 drilled in the wall plate 20.
The first piping connection portions 2a and 12b are inserted into the mounting holes 21 from the outdoor side. Then, from the indoor side, the first pipe connection portion 1
Attach the packing 26 and the sliding packing 27 to 4, and finally screw the nut 23 to the male screw portion 19 and tighten it with a spanner or the like. Thereby, the assembling of the joint and the attachment to the wall plate 20 are completed.

When connecting the joint to the water supply pipe or the hot water supply pipe, first, the pipe 1 forming the water supply pipe or the hot water supply pipe is connected.
The core ring 38 is attached to the tips of 6a and 16b. Subsequently, the distal ends of the pipes 16a and 16b are inserted into the second pipe connection portion 15 of the joint attached to the wall plate 20, and are pushed all the way. When a force in the pulling direction acts on the pipes 16a, 16b in this state, the tips of the restriction pieces 37 of the lock ring 34 bite into the outer surfaces of the pipes 16a, 16b, so that the pipes 16a, 16b are prevented from coming off.

When connecting the joint and the hot and cold water mixing faucet, the water pipe 11a of the hot and cold water mixing faucet disposed on the indoor side is connected to the first pipe connecting portion 1 of the cylindrical body 12a connected to the water supply pipe.
4 and the hot water pipe 11b is screwed to the first pipe connection portion 14 of the tubular body 12b connected to the hot water supply pipe.

When removing the joint attached to the wall plate 20, the nut 23 is loosened and the nut 23 is removed from the male screw portion 19. Then, the first pipe connection part 14 is detached from the mounting hole 21.

When the interval or the position of the cylindrical bodies 12a and 12b is finely adjusted after being once attached to the wall plate 20 for the purpose of, for example, matching with the water pipe 11a and the water pipe 11b of the hot and cold water mixing faucet, Loosen the nut 23 and remove the cylindrical bodies 12a, 12b
Is moved in the length direction of the insertion hole 28 to change it to a desired position, and the nut 23 is tightened again.

When the nut 23 is rotated to be tightened or loosened, the cylindrical body 12a, 12b has
A force in the direction of rotation about the axis 9 acts. However, the fixing plate 25 is supported by the wall plate 20 by the pair of cylindrical bodies 12a and 12b.
The cylindrical bodies 12a and 12b are configured to be non-rotatable with respect to the fixed plate 25 supported by the
There is no possibility that a and 12b rotate. Therefore, nut 2
It is not necessary to fix the tubular bodies 12a and 12b again so as not to rotate when the rotating operation of the nut 3 is performed. There is no possibility that the pipes 16a and 16b are deformed even if the rotating operation is performed.

When the nut 23 on the indoor side is rotated, the nut 22 on the outdoor side cannot be tightened or loosened if it is rotated in the same direction. Since the rotation is restricted by engaging with the stopper 30, there is no need to fix the nut 22 again at the time of the rotation operation.

As described above, according to this embodiment, the following effects are exhibited. The fixing plate 25 is supported by the wall plate 20 at two points, and each of the tubular bodies 12a and 12b is configured to be non-rotatable with respect to the fixing plate 25. Therefore, nut 2
There is no danger that the tubular bodies 12a and 12b will rotate when the 3 is rotated and tightened or loosened. Therefore, even in the case of the joint including the bent cylindrical bodies 12a and 12b as in the embodiment, it is not necessary to secure a space that allows the rotation of the cylindrical bodies 12a and 12b.
The attachment and detachment of the cylindrical bodies 12a and 12b with respect to the cylinder 0 can be performed in a small work space. Similarly, since there is no possibility that the tubular bodies 12a and 12b rotate, the nuts 2 are connected with the pipes 16a and 16b connected.
There is no possibility that the pipes 16a and 16b are deformed due to twisting or the like even when the rotating operation of 3 is performed.

Since the insertion hole 28 of the fixing plate 25 is formed in a long hole shape, the interval between the cylindrical bodies 12a and 12b can be arbitrarily changed. The restriction pieces 3 of the lock ring 34 are inserted by inserting the tips of the pipes 16a and 16b into the second pipe connection portion 15.
7 engages with the outer surfaces of the pipes 16a and 16b and
a and 16b are retained. Therefore, the pipe 16
a and 16b can be easily connected to the second piping connection portion 15, so that workability can be improved and the pipes 16a and 16b can be prevented from falling off.

Since the tubular bodies 12a and 12b are formed in a substantially L-shape, the pipes 16a and 16b can be arranged along the wall plate 20, and space can be saved.

The above embodiment can be modified as follows. The two insertion holes 28 of the fixing plate 25 are formed as one continuous long hole. With such a configuration, the interval between the cylindrical bodies 12a and 12b can be changed wider than in the embodiment.

The bending angles of the tubular bodies 12a and 12b may be changed to an arbitrary angle such as 120 degrees instead of 90 degrees in the embodiment. Further, the cylindrical bodies 12a and 12b may be changed to be bent in two or more steps, or may be changed to, for example, a T-shaped one that is opened in three directions and connected to three pipes.

One or more lock rings 34 may be used. When the number of lock rings 34 is one, the number of parts can be reduced. When the number of lock rings 34 is three or more,
Control piece 3 of lock ring 34 engaged with 6a, 16b
7, the number of pipes 1 from the second pipe connection portion 15 increases.
6a and 16b can be more reliably prevented from falling off.

Next, the technical ideas that can be grasped from the above embodiment will be described below .

[0038]

[0039] The regulating pieces are provided at substantially equal intervals in the circumferential direction of the lock ring.
A fitting for a mixing faucet according to item 1. With this configuration,
When a force in the pulling direction acts on the pipe, it is possible to prevent the pipe from falling off uniformly regardless of the direction of the force.

[0040]

The present invention is configured as described above, and has the following effects. According to the joint for water mixing of the invention described in the claims, there is no possibility that the pipe is deformed nut in connected state and the like pipes twists be rotationally operated. Rotating one nut
The other nut rotates in the same direction
Can be prevented. Therefore, fix the other nut again.
Securely tighten or loosen the nut without setting
can do.

According to the joint for a mixing faucet according to the third aspect of the present invention, the interval between the cylindrical bodies can be arbitrarily changed. According to the joint for a mixing faucet of the invention described in claim 4 , the pipe can be easily connected to the second pipe connection portion, and the workability can be improved, and the pipe can be prevented from falling off. Can be.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view showing a joint for a mixing faucet of an embodiment.

FIG. 2 is a partially cutaway side view showing the joint for the mixing faucet.

FIG. 3 is a front view showing a fixing plate.

FIG. 4 is an exploded perspective view showing a joint for a mixing faucet.

FIG. 5 is an exploded perspective view showing connection of pipes at a second pipe connection portion.

[Explanation of symbols]

11a: a water pipe as an introduction part; 11b: a water pipe as an introduction part; 12a, 12b ... a cylindrical body; 14 ... a first pipe connection part; 15 ... a second pipe connection part; 16a, 16b ... a pipe; ... A locking surface as a locking portion of the cylindrical body, 19 a male screw portion, 20 a wall plate as a support wall, 21 a mounting hole, 2
2, 23: nut, 25: fixing plate as connecting member, 28: insertion hole, 29: locking surface as locking portion of connecting member, 34: lock ring, 37: regulating piece.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E03C 1/02-1/044 F16L 5/00

Claims (4)

(57) [Claims] 1. A plurality of cylindrical bodies connected to an introduction part of a mixing faucet at a first pipe connection part and connected to a resin pipe at a second pipe connection part, and a male screw part is provided on an outer periphery of each cylindrical body. Is formed, each cylindrical body is inserted into a mounting hole formed in the support wall, a pair of nuts are screwed into the male screw portions from both sides of the support wall, and the support wall is tightened with the same nut to form each cylindrical body. The body is configured to be attached to the support wall, and the axis of the pipe connected to each tubular body and the rotation axis of the nut screwed into the male screw portion of the tubular body intersect at a predetermined angle. A coupling for a mixing faucet, wherein a plurality of cylindrical bodies are connected by a connecting member having an insertion hole through which the cylindrical body is inserted, and a locking portion that engages with each cylindrical body and the connecting member. the coupling member and the tubular member is configured to prevent the relative rotation is provided, further pre Tubular coupling member
Either one of a pair of nuts screwed into the male thread of the body
A joint for a mixing faucet, comprising a regulating member for regulating the rotation of the mixing faucet. 2. The introduction of a mixing faucet at the first pipe connection.
Part, and a resin pipe at the second pipe connection part.
A plurality of cylindrical bodies to be connected are provided.
Is formed, and each tubular body is inserted through the mounting hole formed in the support wall.
And screw a pair of nuts from both sides of the support
By tightening the support wall with the same nut, each cylindrical body
To be mounted on the support wall, and
The axis of the pipe connected to the body and the external thread of the cylindrical body
Crosses at a predetermined angle with the rotation axis of the nut screwed into the part
And a connecting member having an insertion hole through which the cylindrical body is inserted.
And the first pipe connection of each cylindrical body
A pair of locking surfaces are flat on the outer peripheral surface of the
The first pipe is formed on the inner peripheral surface of the insertion hole.
A locking surface that engages with the locking surface of the connection portion is provided, and
The cylindrical body and the connecting member inserted into the insertion hole
The connecting portion is configured to prevent relative rotation.
Any of a pair of nuts screwed into the male thread of the tubular body
It is characterized by providing a regulating member that regulates one of the rotations
Fitting for mixing faucet. 3. The method according to claim 1, wherein the insertion hole is a long hole,
A contractor characterized in that the tubular body is configured to be movable.
Joint hands for mixing faucet according to Motomeko 1 or claim 2. 4. An inwardly projecting portion inside said second pipe connection portion.
A lock ring having a plurality of restriction pieces is provided, and the pie
And insert the pipe into the
It is configured to engage with the restricting piece of the
The method according to claim 1, wherein:
A fitting for a mixing faucet according to item 1.