JP2004285653A - Eccentric pipe for mixing faucet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the work trouble and facilitate the work in a limited space not only in fitting work to a water supply/hot water supply pipe but also in removal work for various maintenances. <P>SOLUTION: In this crank-like eccentric pipe 6(7) for mixing faucet, an eccentric pipe body 8 is assembled to a fixed pipe 9 having a connecting screw part 15 to a pipe and a second channel part 16 to rotate around the axis (b) of the second channel part 16. A one-way rotary clutch type engagement mechanism switchable in both directions is interposed between the eccentric pipe body 8 and the fixed pipe 9, wherein in turing the eccentric pipe body 8 in the screw-in direction and in the loosening direction, the fixed pipe 9 is turned integrally and in the direction reverse to the above directions, only the eccentric pipe body 8 is turned. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eccentric tube for a mixing tap which is used for connecting a tap body and a pipe for water supply or hot water supply in a hot and cold mixing tap.
[0002]
[Prior art]
The mixer tap eccentric tube has a connection portion to the mixer tap body at one end side, and an eccentric tube body having a first water passage portion extending in a direction orthogonal to the axis of the connection portion, A fixed pipe having a connection screw part screwed into the hot water supply pipe and having a second water passage extending in the direction of the axis of the connection screw part, and the other end of the eccentric pipe main body, The eccentric tube main body is fixed to the fixed tube by fitting and holding the end side so that the axis of the first water passage and the axis of the second water passage are orthogonal to each other, and both water passages communicate with each other. It is assembled so as to be rotatable around the axis of the two water passages, and the whole is configured to be bent in a crank shape.
[0003]
When connecting the water supply / hot water supply pipe and the mixer tap body on site using the crank-shaped bent eccentric pipe, first, the connection screw part on the fixed pipe side is screwed and fixed to the water supply / hot water supply pipe, and then eccentric. An installation procedure is adopted in which the connecting portion on one end side of the pipe main body is connected to the mixer tap main body via a cap nut or the like. In this case, the position at which the connection thread of the fixed pipe is screwed into the water supply / hot water supply pipe tends to vary, and, due to this, the position of the connection of the eccentric pipe body at the time of completion of the screwing and the mixing tap It is rare that the position of the connecting portion on the main body side exactly matches, and in most cases, the positions of both connecting portions are shifted. Therefore, the connection screw part on the fixed pipe side once screwed is removed from the pipe, the screwing start position is changed, and the screw is screwed again. For example, the connection screw part on the fixed pipe side is removed and screwed in until the positions of the two connection parts match. Is required to be repeated several times, and there is a problem that a predetermined mounting operation requires a lot of troublesome work and time.
[0004]
Conventionally, in order to solve the problem related to such an attaching work, conventionally, an eccentric pipe main body and a fixed pipe are provided with a connecting screw part on a fixed pipe side at a relative rotation part around a second channel axis. When turned in the same direction as the screwing direction, the fixed tube turns integrally in the same direction, and when turned in the same direction as the loosening direction of the connection screw, only the eccentric tube body turns. For example, a mechanism provided with a one-way rotating clutch type engagement mechanism such as a ratchet mechanism is known (for example, see Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent No. 3294830 (FIGS. 13 and 14)
[0006]
[Problems to be solved by the invention]
In the conventional mixer tap eccentric tube provided with the one-way rotation clutch type engagement mechanism as described above, when the eccentric tube main body is rotated in the same direction as the screwing direction of the connection screw portion on the fixed tube side, the engagement mechanism is activated. Due to the engagement, the fixed pipe is integrally rotated in the same direction, and the connection screw portion on the fixed pipe side is screwed and fixed to the water / hot water supply pipe. If the position of the connecting portion of the eccentric tube main body does not match the position of the connecting portion of the mixer tap main body at the time when such screwing is completed, the eccentric tube main body is connected to the connecting screw portion of the fixed tube side. When the rotation is made in the same direction as the slack direction, the engagement of the engagement mechanism is released, and only the eccentric tube main body is rotated, so that the positions of the two connection portions can be matched. As described above, during the installation work of connecting the water supply / hot water supply pipe and the mixing tap body at the site using the eccentric pipe, the eccentric pipe body is first turned in the screwing direction of the connection screw portion and in the opposite direction, thereby first. Even if the screwed fixed pipe is not removed or screwed in again, the positioning of the two connection sections can be performed while maintaining the screw connection section of the fixed pipe to the water supply / hot water supply pipe while maintaining the screw connection. The work can be performed easily and efficiently with less trouble.
[0007]
Also, by increasing the number of engaged parts such as a ratchet part that constitutes one of the one-way rotating clutch type engagement mechanisms such as a ratchet mechanism, the eccentric tube main body and the fixed tube are integrally rotated in the screwing direction. The unit angle range when moving can be reduced to {N (number of engaged parts) / 360}, so that the rotation work space of the eccentric tube main body due to the presence of obstacles and the like at the site can be reduced. Even when restricted, the eccentric tube body is repeatedly rotated alternately in the restricted space in the screwing direction and the opposite direction, so that the connection screw part on the fixed pipe side can be easily connected to the water supply / hot water supply pipe. It has the advantage that it can be screwed and fixed.
[0008]
However, in the above-described conventional mixer tap eccentric tube, when the one-way rotating clutch type engagement mechanism rotates the eccentric tube main body in the same direction as the screwing direction of the connection screw portion on the fixed tube side, the fixed tube is rotated. Mixing with the water supply / hot water supply pipe using a crank-shaped eccentric pipe, such that only the eccentric pipe main body rotates regardless of the fixed pipe when it is turned integrally in the same direction and turned in the opposite direction It only exhibits the function of contributing to the reduction of the number of installation work when connecting the plug main body and the facilitation of the screw fixing work in the restricted space. For example, the plug main body is built in the first channel of the eccentric pipe main body. In order to perform various maintenance such as inspection, replacement and cleaning of the strainer that is installed, and inspection and repair of the flow control plug part built in the fixed pipe side, the crank-shaped eccentric pipe is connected to the water supply / hot water supply pipe. Removing to disconnect from the micro mixing valve body, in particular during operation of removing from the pipe by slack threaded connection of the fixed pipe side which is screwed onto the water supply and hot water supply pipe, it can not be expected Fitted and similar functions. Therefore, at the time of the various maintenances as described above, it is necessary to perform a troublesome and troublesome operation of loosening and removing the screw connection portion of the fixed pipe from the water supply / hot water supply pipe by using a special tool prepared separately. was there.
[0009]
The present invention has been made in view of the above-mentioned circumstances, and not only at the time of installation work to water supply / hot water supply pipes, but also at the time of removal work for performing various maintenances, the number of work steps is reduced and work within the restricted space is reduced. An object of the present invention is to provide an eccentric tube for a mixer tap that can exhibit a function contributing to facilitation.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, an eccentric tube for a mixer tap according to the present invention has a connecting portion to a mixer tap main body at one end side, and a first water passage portion extending in a direction orthogonal to an axis of the connecting portion. An eccentric pipe main body, and a fixed pipe having a connection screw portion screwed into and fixed to a water supply / hot water supply pipe at one end side, and having a second water passage portion extending in a direction of an axis of the connection screw portion. The other end of the fixed pipe is fitted and held on the other end of the main body such that the axis of the first water passage and the axis of the second water passage are orthogonal to each other, and both water passages communicate with each other. An eccentric tube for a mixing plug, wherein an eccentric tube main body is rotatably assembled around an axis of the second water passage portion with respect to a fixed tube,
A plurality of engaged portions are formed at equal intervals in the circumferential direction over the entire outer peripheral portion of the other end of the fixed tube, while the engaged portion has different directions at the other end of the eccentric tube main body. And two engagement claws elastically engaged with the engagement portion are provided so as to be switchable with respect to the engaged portion, and one engagement claw is elastically engaged with one of the engaged portions. In the first state, when the eccentric tube main body is turned around the axis of the second water passage portion in the same direction as the screwing direction of the connection screw portion, the fixed tube turns integrally in the same direction, and When rotated in the same direction as the loosening direction of the screw portion, only the eccentric tube main body rotates, and in the second state in which the other engaging claw is elastically engaged with one of the engaged portions, When the eccentric pipe main body is turned around the axis of the second water passage in the same direction as the loosening direction of the connection screw, the fixed pipe turns integrally in the same direction, , When rotated in the screwing direction and the same direction of the connecting screw portion, only the eccentric tube body is characterized in that it is configured to rotate.
[0011]
According to the present invention having the above-described configuration, the first operation when the water supply / hot water supply pipe and the mixer tap main body are connected on site, that is, when screwing the connection screw portion of the fixed pipe side into the water supply / hot water supply pipe, After setting one of the two engagement claws to the first state in which one of the engagement claws is engaged with one of the engaged portions, the eccentric tube body is screwed in the same direction as the screwing direction of the connection screw portion (hereinafter simply referred to as screwing). (Referred to as “direction”), the fixed tube is integrally rotated in the same direction, and the connection screw portion is screwed into the pipe and fixed. At this time, if the rotation space of the eccentric tube main body is restricted by the presence of an obstacle or the like, the rotation in the restricted space is temporarily interrupted, and the eccentric tube main body is turned in the direction opposite to the screwing direction. (Hereinafter simply referred to as the slack direction). Since the engaging claw is disengaged from the engaged portion during the rotation in the loosening direction, only the eccentric tube main body rotates in the loosening direction while the screwing of the connection screw portion is maintained. Become. When the eccentric tube body is turned again in the screwing direction at the time when the eccentric tube main body reaches a position where interference with an obstacle or the like can be avoided by turning in the loosening direction in the restricted space, the engaging claw is engaged. With the engagement with one of the joint portions, the fixed pipe rotates integrally and the screwing into the pipe is continued. By repeating this operation, the fixed pipe can be easily screwed into the pipe even in a limited space.
[0012]
At the time when the predetermined screwing of the connection screw portion of the fixed pipe to the pipe is completed as described above, the second operation for connecting the water supply / hot water supply pipe and the mixer tap main body next, that is, one end side of the eccentric pipe main body Work to connect the connection part of the eccentric tube body to the mixer tap body via a cap nut etc., but at this time, the position of the connection part of the eccentric tube body and the position of the connection part on the mixer tap body side do not match Rotates the eccentric tube main body in the loosening direction of the connection screw portion on the fixed tube side. At the time of rotation in the loosening direction, the engagement claw is disengaged from the engaged portion, so that only the eccentric tube main body is rotated in the loosening direction while the screwing and fixing of the connection screw portion to the pipe is maintained, Since the positions of the two connection portions can be matched by this rotation, there is no need to repeat the removal and screwing of the connection screw portion on the fixed tube side, and the two can be easily and efficiently connected with little trouble. .
[0013]
In addition, in the use state of the mixer tap in which the water supply / hot water supply pipe and the mixer tap main body are connected as described above, in order to perform various maintenances as described above, the crank-shaped eccentric pipe is connected to the water supply / hot water supply pipe. When it is necessary to remove the connection from the mixer tap main body, first, disconnect one end side connection portion of the eccentric tube main body from the mixer tap main body, and then engage the other of the two engaging claws. Is engaged with one of the engaged portions, and by rotating the eccentric tube body in the loosening direction of the connection screw portion in this state, the fixed tube integrally rotates in the same direction. The connection screw is loosened from the pipe. Also at this time, when the rotation space of the eccentric tube main body is restricted by the existence of an obstacle or the like, the rotation in the restricted space is temporarily interrupted, and the eccentric tube main body is rotated in the screwing direction. Let it. At the time of rotation in the screwing direction, the engaging claw is disengaged from the engaged portion, so that the connection screw portion that has been loosened up to that time is not screwed in, and the eccentric tube is maintained in its loosened position and maintained. Only the main body rotates in the screwing direction. When the eccentric tube main body is turned again in the loosening direction at the time when the eccentric tube main body reaches a position where interference with an obstacle or the like can be avoided by turning in the screwing direction in the restricted space, the engaging claw is engaged. When the fixed pipe is engaged with one of the joints, the fixed pipe rotates integrally and the slack from the pipe is continued. By repeating this operation, the fixed pipe can be easily and efficiently removed from the pipe with a small number of operations even in a limited space.
[0014]
In the mixer tap eccentric tube according to the present invention, the two engaging claws may be configured to be individually engageable with and disengageable from the engaged portion. The two engaging claws are formed on both sides in the swing direction of a single swing lever pivotally supported around a support shaft, and the support shaft of this single swing lever is It is desirable to be able to switch between the first state and the second state by swinging around. In this case, not only the number of parts can be reduced to simplify the structure, but also it is possible to switch between the first state and the second state only by swinging the single swing lever. This can be simplified and simplified.
[0015]
Further, in the present invention, as described in claim 3, a strainer is exchangeably built in the first water passage portion on one end side of the eccentric tube main body, and the flow rate is adjusted inside the other end side of the fixed pipe. When the eccentric tube for a mixing tap is configured such that a stopper is provided, the frequency of maintenance of these built-in components is high, and the number of removal work opportunities in the second state increases accordingly. The usefulness of the present invention by facilitating the attachment and detachment work is more remarkable.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of an entire hot / water mixer tap using an eccentric tube for a mixer tap according to the present invention. In FIG. 1, reference numeral 1 denotes a hot / water mixer tap main body, which protrudes from both sides in the same direction. A hot water inlet 2 and a water inlet 3 are formed, and in the center, hot water and water flowing from the inlets 2 and 3 are appropriately mixed to control flow rate for switching between shower, water stoppage and discharge. A valve 4 is provided, and a hot water temperature adjusting handle 5 is provided at one end.
[0017]
Reference numeral 6 denotes an eccentric pipe on the hot water supply side, 7 denotes an eccentric pipe on the water supply side, and the eccentric pipe 6 on the hot water supply side is installed between the hot water supply pipe (not shown) and the hot water inlet 2 of the hot and cold water mixing tap main body 1, and On the other hand, the eccentric pipe 7 on the water supply side forms a water flow path provided between a water supply pipe (not shown) and the water inlet 3 of the hot and cold water mixing tap main body 1 while forming a passage. Since the hot water supply side eccentric pipe 6 and the water supply side eccentric pipe 7 have the same structure, only one of the water supply side eccentric pipes 7 will be described in detail below. In the drawings, portions and portions corresponding to the water supply side eccentric tube 7 are denoted by the same reference numerals in the drawings, and detailed description thereof will be omitted.
[0018]
FIG. 2 is a cross-sectional view showing a specific structure of the water supply side eccentric tube 7. The eccentric tube 7 is roughly provided with an eccentric tube main body 8 and a fixed tube 9, and the whole is configured in a crank shape. ing. The eccentric tube main body 8 is formed in a cylindrical shape, and a connection portion 11 that can be screw-connected to the mixer tap main body 1 via a cap nut 10 at one end side in the cylinder axis direction in a direction orthogonal to the cylinder axis a. It has a first water passage portion 12 formed in a protruding state and extending in a direction along the cylinder axis, and a strainer 13 is attached to and detached from the upstream end of the first water passage portion 12 via a cap 14. Built-in possible.
[0019]
On the other hand, the fixed pipe 9 is formed in a cylindrical shape, and its axis b extends linearly, and a connection screw portion 15 made of a male screw which is screwed and fixed to the water supply pipe is formed on the outer periphery of one end in the cylindrical axis direction. And a second water passage portion 16 extending in a direction along the cylinder axis b, and a water stop valve 17 inside the other end of the second water passage portion 16 in the cylinder axis direction. An operation screw shaft 18 for moving the water stop valve 17 in and out of the valve seat 28, and a flow rate adjusting plug portion 19 including a nut-like member 29 for screwing and holding the operation screw shaft 18 are provided.
[0020]
On the other end of the eccentric tube main body 8 in the cylinder axis direction, the other end of the fixed pipe 9 in the cylinder axis direction is connected to the axis a of the first channel 12 and the axis b of the second channel 16. Are fitted and held in a watertight manner via packings 20 and 20 so that the water passages 12 and 16 communicate with each other via the flow rate adjusting plugs 19. The main body 8 is attached to the fixed pipe 9 so as to be rotatable around the axis b of the second channel 16.
[0021]
In the eccentric tube for a mixing tap configured as described above, a plurality of at equal intervals in the circumferential direction, as shown in FIGS. Are formed on the other end of the eccentric tube main body 8 at two different angles engaging with the engaged portions 21 from different angles. Engagement claws 22, 23 are provided. The two engaging claws 22 and 23 are provided with a single swing lever 26 pivotally supported on a support shaft 25 embedded in and fixed to a flat portion 24 formed continuously with the peripheral wall of the eccentric tube main body 8. When the swing lever 26 swings around the support shaft 25, one of the engaging claws 22 is engaged with one of the engaged portions 21. The engagement state can be switched between a first state (FIG. 3) and a second state (FIG. 5) in which the other engaging claw 23 is engaged with one of the engaged portions 21.
[0022]
An elastic biasing mechanism 27 using a spring ball is provided above the support shaft 25 of the swing lever 26, and the swing lever 26 moves over the neutral point (FIG. 4) of the elastic bias mechanism 27. 26 is switched between the first state and the second state by swinging, and when any of the two engaging claws 22 and 23 is engaged with the engaged portions 21. , So that the elastic engagement force is applied. Reference numeral 30 in the drawing denotes a cover that covers the entire surface of the swing lever 26 having two engagement claws 22 and 23, and one of the engagement switching operation portions 26a and 26b of the swing lever 26 projects. It is formed in the size which does.
[0023]
Next, an installation procedure for connecting the water supply (hot water supply) pipe and the hot water mixer tap body 1 at the construction site using the eccentric pipe for a mixer tap having the above configuration will be described.
First, the work of screwing the connection screw portion 15 on the fixed pipe 9 side into the water supply (hot water supply) pipe is performed. At this time, the swing lever 26 is swung around the support shaft 25 as shown in FIG. The first state is such that one of the two engaging claws 22, 23 is elastically engaged with one of the engaged portions 21. In this state, when the eccentric tube main body 8 is rotated around the axis b of the second water passage portion 16 in the screwing direction P1 of the connection screw portion 15, the fixed tube 9 is rotated via the engaging claw 22 and the engaged portion 21. Are integrally rotated in the same direction P1, and the connection screw portion 15 is screwed into the pipe and fixed. If the rotation space of the eccentric tube main body 8 is restricted by the presence of an obstacle or the like at the time of this screwing, the rotation in the restricted space is temporarily interrupted, and the eccentric tube main body 8 is moved in the loosening direction. Rotate to P2. At the time of rotation in the loosening direction P2, the engaging claw 22 is disengaged from the engaged portions 21... Against the elastic force of the elastic urging mechanism 27. Only the eccentric tube main body 8 rotates in the loosening direction P2 while the screwing of the portion 15 is maintained. Then, when the eccentric tube main body 8 is again rotated in the screwing direction P1 when the eccentric tube main body 8 reaches a position where interference with an obstacle or the like can be avoided by the rotation in the loosening direction in the restricted space, the engagement is achieved. In the first state in which the claw 22 is engaged with one of the engaged portions 21..., The fixed pipe 9 rotates integrally and the screwing into the pipe is continued. By repeating this operation, the screwing and fixing operation of the fixing pipe 9 to the pipe can be easily performed even in the limited space.
[0024]
When the predetermined screwing of the connection screw portion 15 of the fixed pipe 9 into the pipe is completed as described above, the connection portion 11 on one end side of the eccentric tube main body 8 is connected to the water inlet 3 of the mixer tap main body 1 with a cap nut. At this time, the position of the connecting portion 11 of the eccentric tube main body 8 and the position of the water inlet 3 which is the connecting portion on the side of the mixer tap main body 1 do not often coincide with each other. Occurs. In this case, the eccentric tube main body 8 is rotated in the loosening direction P2. Since the engagement claw 22 is disengaged from the engaged portion 21 during the rotation in the loosening direction, the eccentric tube main body 8 is maintained while the screw connection of the connection screw portion 15 on the fixed tube 9 side to the pipe is maintained. Only the connection portion 11 and 3 are rotated in the loosening direction P2. This rotation makes it possible to match the positions of the two connection portions 11 and 3 without having to repeat the removal and screwing of the connection screw portion 15 on the fixed tube 9 side. Both of them can be easily and efficiently connected with less trouble.
[0025]
Further, in the state of use of the mixing tap in which the water supply (hot water supply) pipe and the mixing tap main body 1 are connected by the eccentric pipe 7 as described above, for example, inspection, replacement, cleaning of the strainer 13 or the flow rate adjusting tap on the fixed pipe 9 side. If it is necessary to remove the crank-shaped eccentric pipe 7 from the water supply (hot water supply) pipe and the mixing tap in order to perform various maintenance such as inspection and repair of the part 19, first, the eccentric pipe 7 After disconnecting the one end side connection portion 11 of the main body 8 from the water inlet 3 of the mixer tap main body 1, as shown in FIG. , 23 are in a second state in which the other engaging claw 23 is elastically engaged with one of the engaged portions 21.
[0026]
In the second state, by rotating the eccentric tube main body 8 in the loosening direction P2, the fixed tube 9 is integrally rotated in the same direction, and the connection screw portion 15 is loosened and removed from the water supply (hot water supply) pipe. Also at this time, when the rotation space of the eccentric tube main body 8 is restricted by the existence of an obstacle or the like, the rotation in the restricted space is temporarily interrupted, and the eccentric tube main body 8 is screwed in the screwing direction P1. To rotate. At the time of rotation in the screwing direction, the engagement claw 23 is disengaged from the engaged portion 21, so that the connection screw portion 15 which has been loosened up to that time is not screwed, and the loosened position is maintained. Only the eccentric tube main body 8 rotates in the screwing direction P1. When the eccentric tube main body 8 is again rotated in the loosening direction at the time when the eccentric tube main body 8 reaches the position where the interference with the obstacle or the like can be avoided by the rotation in the screwing direction in the restricted space, the engaging claw 23 is turned on. In the second state in which one of the engaged portions 21 is elastically engaged, the fixed pipe 9 rotates integrally and the slack from the pipe is continued. By repeating this operation, even in the restricted space, the fixed pipe 9 is loosened from the pipe and the entire eccentric pipe 7 is easily and efficiently removed from the water supply (hot water supply) pipe and the mixer tap main body 1 with a small number of steps. The predetermined maintenance can be arbitrarily performed.
[0027]
Note that the present invention is not limited to the above-described embodiment, and various other structural changes can be made. For example, two engaging claws 22 and 23 are provided on respective swinging levers, and the two engaging claws 22 and 23 are engaged with the engaged portions 21 by selective swinging of these two swinging levers. You may be comprised so that combination switching is possible.
[0028]
In the above-described embodiment, the eccentric tube main body 8 and the fixed tube 9 are integrally rotated in the screwing direction P1 and the loosening direction P2 by forming 20 engaged portions 21 at equal intervals in the circumferential direction. In the above description, the unit angle range is set to (20/360 = 18 °). For example, if the number of engaged portions 21 is 36, the unit angle range is (36/360 = 10 °). ), The unit angle range can be reduced as the number of engaged portions 21 is increased, so that work in a narrow space can be further facilitated.
[0029]
【The invention's effect】
As described above, according to the present invention, when the crank-shaped eccentric pipe is mounted between the mixing tap and the water supply / hot water supply pipe, the eccentric pipe main body is rotated in the screwing direction of the connection screw portion and in the opposite direction. By operating the connector, the threaded connection on the eccentric tube main body can be maintained while the screw connection on the fixed tube is fixedly screwed into the water / hot water supply pipe without removing or screwing in the fixed tube previously screwed in. And the position of the connection part on the mixer tap side can be adjusted, so that the predetermined mounting work can be performed easily and efficiently with a small number of steps, and also when removing the component parts in the eccentric tube, when performing various maintenance on the built-in parts. However, even if a special tool is not separately prepared, a predetermined removal operation can be performed simply by switching the engagement of the two engagement claws with the engaged portion and rotating the eccentric tube body in the loosening direction. It can be easily and quickly performed with a small trouble to. In addition, even when the work space for rotating the eccentric tube body is restricted due to the presence of obstacles at the time of installation and removal, the eccentric tube body is screwed or loosened in the restricted space and in the opposite direction. By turning repeatedly and alternately, the connection screw portion on the fixed pipe side can be easily screwed and fixed to the water supply / hot water supply pipe, and the slack can be released.
[0030]
In particular, by adopting the configuration as described in claim 2, not only the number of parts can be reduced and the structure can be simplified, but also the first state and the first state can be achieved only by swinging the single swing lever. Switching between the two states is possible, and the switching operation itself can be facilitated and simplified.
[Brief description of the drawings]
FIG. 1 is a plan view of an entire hot / water mixer tap using an eccentric tube for a mixer tap according to the present invention.
FIG. 2 is a sectional view showing a specific structure of the eccentric tube for a mixing tap according to the first embodiment.
FIG. 3 is a cross-sectional view for explaining an attached state (first state) of the eccentric tube for a mixing tap according to the first embodiment.
FIG. 4 is a cross-sectional view showing a transitional state of the mixing plug eccentric tube when it is switched from an attached state (first state) to a detached state (second state).
FIG. 5 is a cross-sectional view for explaining a detached state (second state) of the mixing tap eccentric tube.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mixing tap main body, 6 ... Water supply side eccentric pipe, 7 ... Hot water supply side eccentric pipe, 8 ... Eccentric pipe main body, 9 ... Fixed pipe, 11 ... Connection part, 12 ... 1st channel part, 13 ... Strainer, 15 ... Connection Screw portion, 16: second water passage portion, 19: flow control plug portion, 21: engaged portion, 22, 23: engaging claw, 25: support shaft, 26: swing lever, a, b: axis.

Claims (3)

An eccentric tube main body having a connection part to the mixer tap main body at one end side and having a first water passage part extending in a direction perpendicular to the axis of the connection part, and a connection screwed and fixed to water supply / hot water supply pipe at one end side A fixed pipe having a thread portion and having a second water passage extending in the direction of the axis of the connection screw portion, the other end of the fixed pipe being provided on the other end of the eccentric pipe main body with the first water passage. The axis and the axis of the second water passage are orthogonal to each other, and by fitting and holding the two water passages in communication with each other, the eccentric pipe main body is fixed to the fixed pipe around the axis of the second water passage. In an eccentric tube for a mixing tap which is rotatably assembled,
A plurality of engaged portions are formed at equal intervals in the circumferential direction over the entire outer peripheral portion of the other end of the fixed tube, while the engaged portion has different directions at the other end of the eccentric tube main body. Two engaging claws elastically engaged from are provided so as to be able to switch the engagement with the engaged portion,
In the first state in which one engagement claw is elastically engaged with one of the engaged portions, the eccentric tube main body is rotated around the axis of the second water passage in the same direction as the screwing direction of the connection screw portion. When the fixed pipe is rotated integrally in the same direction, and when rotated in the same direction as the loosening direction of the connection screw portion, only the eccentric pipe body is rotated,
In the second state in which the other engaging claw is elastically engaged with one of the engaged portions, the eccentric tube main body is moved in the same direction as the slack direction of the connection screw portion around the axis of the second water passage portion. When rotated, the fixed pipe rotates integrally in the same direction, and when rotated in the same direction as the screwing direction of the connection screw portion, only the eccentric pipe main body is configured to rotate. An eccentric tube for a mixing tap. The two engaging claws are formed on both sides in the swing direction of a single swing lever pivotally supported around a support shaft, and swing around the support shaft of the single swing lever. The eccentric tube for a mixing tap according to claim 1, wherein the eccentric tube is configured to be switchable between the first state and the second state. 3. The flow control plug according to claim 1, wherein a strainer is exchangeably built in the first water passage portion at one end of the eccentric tube main body, and a flow rate adjusting plug is provided inside the other end of the fixed tube. An eccentric tube for a mixing tap according to the above.

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