JP2004138126A - Hot and cold water mixing faucet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot and cold water mixing faucet, comprising main five parts that can be easily molded to achieve easy molding and assemblage, and provided with a hot water temperature and flow adjusting function by operation of a single handle, an opening holding function to stably hold a position of a valve member, especially, etc. <P>SOLUTION: This hot and cold water mixing faucet is provided with a valve shell 1 having a valve seat 13 at an inner bottom surface of a rotor hole 11 in a body 10, and a pair of hot water introducing holes 16a and 16b opened in the rotor hole, a rotor 2 having an adjusting hole 25 in which opening of the hot water introducing holes is communicated with a cylindrical body 20 engaged in the rotor hole at a desired ratio, a valve member 3 provided with an engagement part 33 to be engaged with a connector 5 with clearance above a valve plate part 31 to which pressure of hot water is applied at an upper surface, and an extended member 35 to form a constant speed flow passage on a lower surface of the valve plate part 31, the handle 4 to operate the valve member, and the connector 5 to connect the handle to the engagement part in the valve member. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hot / water mixer tap which can hold a position of a valve member at the time of valve opening and can be relatively easily formed of a synthetic resin or the like. The opening degree holding function that stably holds the position of the valve member that is set by the temperature control that changes the mixing ratio of hot and cold water and the flow rate adjustment that changes the opening amount of the flow path by operating a single handle independently The present invention relates to a hot and cold water mixing tap capable of achieving a hot water adjusting function and a stable sealing function between sliding parts with a simple configuration.
[0002]
[Prior art]
2. Description of the Related Art Various types of hot-water mixer taps have been conventionally known in which the temperature of the hot-water mixer can be adjusted by operating the handle and the flow rate can also be adjusted.
The present inventor has proposed a similar hot and cold water mixing tap, but further improvements are required in the realization of simple molding and assembling of parts and cost reduction.
In particular, regarding the position holding of the valve member at the time of opening the valve, it is common to apply a strong driving force to the valve member from the outside with a screw or the like and stabilize the position holding of the valve member. Including the already-proposed invention (see Patent Document 1), there is also known a device provided with a valve opening / closing mechanism by operating a handle. However, if it is attempted to stabilize the position of a valve member when the valve is opened, an accessory is required. There is a complication due to the increase, an increase in friction, a decrease in responsiveness, etc., and the solution is not easy.
[0003]
[Patent Document 1]
JP 2001-271948 A
[0004]
[Problems to be solved by the invention]
A technical problem of the present invention is to provide a hot and cold water mixing tap which can stably maintain the position of a valve member at the time of valve opening, and which can be easily formed and assembled by mainly using five parts which can be easily formed of synthetic resin or the like. To provide.
Another technical problem of the present invention is that, in the hot / water mixer tap, by operating a single handle, the temperature adjustment for changing the mixing ratio of hot and cold water and the flow rate adjustment for changing the opening of the flow path are individually and independently performed. Another object of the present invention is to provide a hot and cold water adjusting function which can be performed in proportion to a steering wheel operation amount.
Another technical object of the present invention is to provide the hot / water mixer tap with an opening holding function for stably holding the position of the valve member set by operating the handle. Still another technical object of the present invention is to provide the hot water mixer with a stable sealing function between the sliding parts.
[0005]
[Means for Solving the Problems]
The hot and cold water mixing tap of the present invention for solving the above problems basically has a valve seat formed around a flow passage opening on an inner bottom surface of a rotor hole opened in a body, and the flow passage opening is formed in the body. A valve outer shell body having a pair of hot and cold water introduction holes opened at positions close to each other on the inner periphery of the rotor hole, and a valve outer shell body communicating with the hot water outlet through the internal flow passage space; A rotor body rotatably fitted into the rotor hole, the cylinder body facing the opening of the pair of hot and cold water introduction holes in the rotor hole, and straddling the pair of openings at an arbitrary ratio by rotation; A rotor provided with an adjustment hole for setting the mixing amount of hot and cold water according to its rotational position, and a valve seat formed around the inner bottom surface of the rotor hole in the valve outer shell. A valve plate that opens and closes the flow passage opening with a seal member The valve plate portion is disposed in the rotor such that the upper surface thereof is communicated with the hot and cold water introduction hole through the adjustment hole regardless of the operating position of the valve plate portion, and a connector is provided on the valve plate portion. And an extending portion extending downwardly from the valve plate portion near the inner peripheral surface of the flow passage opening on the lower surface side of the valve plate portion. Sometimes, in the flow gap formed between the peripheral portion of the valve plate portion and the inner bottom surface of the rotor hole facing the portion, the width of the inlet to the flow gap formed by the adjustment hole and the distance between the extending material The sum of the widths of the outlets from the flow gap formed at the same time is formed substantially equal, and the heights of the inlet and the outlet are also made substantially equal, so that a constant velocity flow path is formed from the inlet to the outlet. The valve member is made to slide tightly and axially in the rotor via a seal member. A connector that is inserted and connected between the handle and the engaging portion of the valve member, and the valve member for allowing hot water to flow out of the adjustment hole through the connector by vertical movement of a lever. And a handle for raising and lowering the lever, rotating the rotor by turning the lever to the left and right, and thereby adjusting the temperature and the flow rate.
[0006]
Thus, the hot and cold water mixing tap can be easily formed and assembled mainly by the five components of the valve shell, the rotor, the valve member, the connector, and the handle, which are easily formed of synthetic resin or the like. However, the above-mentioned five parts indicate the number of main parts, and there may be a sealing member, a pin, and other auxiliary parts, parts that are divided and formed to facilitate molding, and the like.
[0007]
In the hot-water mixer tap, when the valve is opened, the fluid pressure acting on the portion facing the constant velocity flow path around the lower surface of the valve plate portion and the fluid pressure acting on the upper surface of the corresponding valve plate portion become uniform, whereby the valve member due to the fluid pressure Movement can be eliminated.
In a preferred embodiment of the hot and cold water mixing tap, an engaging portion movably engaged with a connector provided on a valve plate portion of the valve member is formed integrally with the valve plate portion, and is provided at a lower end of the connector. It is formed by a bifurcated portion that engages from the side with the small diameter portion having the provided engagement head at the tip and that can freely move along the small diameter portion.
Further, in the hot and cold water mixing tap, a pair of hot and cold water introduction holes communicating with positions close to each other on the inner peripheral surface of the rotor hole are drilled from a side of the valve outer shell opposite to the rotor hole. The handle hole is formed by a hole whose axis is parallel to and partly in contact with the axis, thereby making the communication opening formed between the inner peripheral surface of the rotor hole and each of the hot and cold water introduction holes rectangular. This is effective for configuring a hot water adjustment function that can be performed in proportion to the operation amount.
[0008]
In the hot water mixing tap of the present invention, basically, the valve plate portion of the valve member is inserted into the rotor in a state where the upper surface side is always in communication with the hot water introduction hole through the rotor regardless of the operation position. Since the valve plate portion is provided, the pressure of the hot water on the valve plate portion acts as a valve closing force when the valve is closed, and the pressure of the hot water acting on the valve plate portion and the like when the valve is opened is reduced. Balance the forces acting on the plate itself.
[0009]
On the other hand, the diameter of the flow passage opening in the valve outer shell and the outer shape of the connector corresponding to the valve shaft slidably fitted in the rotor are substantially the same diameter, and the valve plate portion is formed around the flow passage opening. When the valve is closed by the seal member in contact with the valve seat, the valve closing force is generated by the pressure of the hot and cold water acting on the pressure receiving area within the seal diameter of the seal member, which is larger than the pressure receiving area of the connector, and In the valve-open state in which the opening is opened, the force in the valve opening and closing direction due to the pressure of the hot and cold water acting on the valve member can be formed to be opposed.
[0010]
Therefore, a slight force in the valve opening direction remains at the valve opening position, but the force can be reduced by means such as providing a drive adjusting plate on the extension member. Also, by using various methods such as reducing the diameter of the connector corresponding to the valve shaft portion or increasing the diameter of the flow path opening, the remaining valve opening force is reduced to a level that does not hinder practical use. be able to. This makes it possible to configure an opening holding function for stably holding the valve opening position and the valve closing position of the valve member set by operating the handle.
[0011]
In the hot and cold water mixing tap, a handle for operating the rotor and the valve member is configured by connecting a plate-shaped head to the tip of the operating lever, and the plate-shaped head is engaged with the valve member. It is configured to be rotatably connected to the connector by a pin, and to slide in the radial direction with respect to the rotor but to be immovable in the axial direction of the rotor. By operating a single handle, the temperature adjustment for changing the mixing ratio of hot and cold water and the flow rate adjustment for changing the opening amount of the flow path can be individually and independently performed.
[0012]
Further, in the hot and cold water mixing tap, one or both of the seal members interposed between the rotor inner surface of the valve shell and the rotor and between the rotor and the connector are slid with each other. An annular holding portion fixedly held by the member, an annular sealing portion that slidably abuts on the other member and seals between the abutting surfaces, and an annular sealing portion and the annular sealing portion. An arc-shaped protruding part is provided on the side in contact with the hot and cold water, and the annular sealing part is extended by the pressure of the hot and cold water acting on the hot water, and the annular sealing part is provided with a contacting part against the contact surface. Thus, a stable sealing function can be provided between the sliding portions.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 5 show an embodiment of a hot and cold water mixing tap according to the present invention.
This hot and cold water mixing tap basically includes a valve outer shell 1 constituting an outer shell, a rotor 2 for setting a mixing amount of hot and cold water by rotation in the valve outer shell 1, and a valve outer shell 1 1, a valve member 3 for setting the flow rate at the same time as opening and closing the valve seat; a handle 4 for adjusting the temperature and the flow rate by rotating the rotor 2 and raising and lowering the valve member 3; And a connector 5 for transmitting the power to the vehicle.
[0014]
The valve outer shell 1 has a rotor hole 11 for fitting the rotor 2 from the upper surface at an eccentric position of the body 10, and a valve seat 13 at an upper surface around a flow path opening 12 provided at the center of the bottom surface. And the flow passage opening 12 is provided on a side surface of the body 10 on the side where the rotor hole 11 is biased through a flow passage space 14 in which a driving force adjusting plate 34 and the like of the valve member 3 described later can move up and down. On the other hand, the body 10 is provided with a pair of hot water inlet holes 16a and 16b close to each other on the lower surface of the body 10 on the side opposite to the outlet 15 so as to communicate with the hot water. By arranging the introduction holes 16a and 16b so as to be partially in contact with the rotor hole 11, the introduction holes 16a and 16b communicate with the rotor hole 11 by rectangular openings 17a and 17b which are close to each other.
[0015]
More specifically, when forming the pair of rectangular openings 17a and 17b, a pair of hot and cold water introduction holes 16a and 16b are provided at positions close to the peripheral surface of the rotor hole 11 and close to each other. From the side of the outer shell body 1 opposite to the rotor hole 11, the rotor hole 11 is bored so that the axis is parallel to and partially in contact with the rotor hole 11, whereby the inner peripheral surface of the rotor hole 11 is The communication openings 17a and 17b formed between the hot water introduction holes 16a and 16b are formed in a rectangular shape. Such a configuration is effective for obtaining a hot and cold water adjusting function of adjusting the temperature and the flow rate in proportion to the handle operation amount. Either side of the hot water introduction holes 16a and 16b may be connected to a hot water or water supply source.
[0016]
The rotor 2 rotatably fitted into the rotor hole 11 in the valve outer shell 1 rotates around the cylindrical body 20 in the rotor hole 11 by a guide mechanism 21 using a ball. However, the axial movement is restricted, and the space between the rotor hole 11 and the inner surface of the rotor hole 11 is sealed by the seal member 22 so as to be fitted.
The cylindrical body 20 has a first hole 23 in which the connector 5 slides and a second hole 24 having a larger diameter than the first hole 23 in which the valve member 3 slides. Are provided vertically and concentrically, and in the portion of the cylindrical body 20 where the second hole 24 is provided, the rotor hole 11 and the hot water introduction hole 16a in the body 10 of the valve outer shell 1 are formed in the cylindrical body wall. , 16b are provided with rectangular adjusting holes 25 facing the rectangular openings 17a, 17b. As can be seen from FIG. 3, the adjustment hole 25 communicates with each of the rectangular openings 17a and 17b which are opened in close proximity by the rotation of the rotor 2 by the handle 4, or both the openings 17a and 17b. Are connected so as to straddle them at an arbitrary ratio, and the mixing amount of hot and cold water can be set according to the rotational position.
[0017]
Further, a radial groove 26 into which a plate-shaped head 41 of the handle 4 described later is fitted is provided in an upper portion of the cylindrical body 20 of the rotor 2 on the side of the adjustment hole 25. An enlarged portion 27 that is enlarged in the groove width direction for fitting the projections 43 provided on both sides of the plate-shaped head 41 is continuously provided.
[0018]
The valve member 3 is vertically slidably fitted in a second hole 24 in the cylindrical body 20 of the rotor 2. The valve member 3 includes a valve plate portion 31 that comes into contact with and separates from the inner bottom surface of the rotor hole 11 in the valve outer shell 1. The valve plate portion 31 has a flow path opening in the inner bottom surface of the rotor hole 11. A seal member 32 made of an O-ring is provided at a position around the valve seat 13 around the valve seat 13. This seal member can be provided on the valve seat side, and the attachment of the seal member can be stabilized by using a seal holder as appropriate. In the cylindrical body 20 of the rotor 2, the upper surface of the valve plate portion 31 is always communicated with the hot and cold water introduction holes 16a and 16b through the adjustment holes 25 and the like in the cylindrical body 20 regardless of the operation position. It is arranged as a state. However, another hole that forms a part of the adjustment hole 25 by communicating with the upper surface of the valve member 31 may be provided so that hot water can be introduced into the upper surface of the valve plate portion 31.
[0019]
An engaging portion 33 formed by a forked portion that engages with the lower end of the connector 5 is provided integrally with the valve plate portion 31 (see FIGS. 1 and 3). The engagement portion 33 only needs to engage the valve member 3 movably with the connector 5, and when the valve member 3 is in the floating range, the valve closing position is set to the valve closing position regardless of the position of the connector 5. What is necessary is just to comprise so that it can hold | maintain.
[0020]
Further, below the valve plate portion 31, the valve is located in the flow path space 14 between the flow path opening 12 and the outlet 15, and is close to the inner peripheral surface of the flow path opening 12. A grid-like extending member 35 extending downward from the plate portion 31 is provided, and a driving force adjusting plate 34 is connected to the distal end of the grid-like extending member 35 forming the water gap.
The extending member 35 is formed of a plurality of lattice-like members as shown in FIGS. 1, 4 and 5, and the total width of the openings formed between the extending members 35 is The width is approximately equal to the width of the adjustment hole 25 of the child 2.
[0021]
Therefore, at the time of valve opening, in the flow gap 36 formed between the peripheral portion of the valve plate portion 31 and the inner bottom surface of the rotor hole 11 facing the peripheral portion, the flow gap formed by the adjustment hole 25 is formed. The width of the inlet 36a to the opening 36 and the sum of the width of the outlet 36b from the flow gap 36 formed between the extending members 35 are substantially equal, and the heights of the inlet 36a and the outlet 36b are also substantially equal. As a result, a constant velocity flow path is formed between the inlet 36a and the outlet 36b. When the valve is opened, the fluid pressure acting on the portion facing the constant velocity flow path around the lower surface of the valve plate portion 31 and the fluid pressure acting on the upper surface of the corresponding valve plate portion 31 become uniform.
[0022]
The driving force adjusting plate 34 is disposed in the flow path space 14 between the flow path opening 12 and the outflow port 15 and receives the pressure of hot and cold water flowing therethrough on the upper surface side. It is formed to receive atmospheric pressure. That is, in the valve opening state in which the flow path opening 12 is opened, the driving force adjusting plate 34 is configured such that the force in the valve closing direction due to the pressure of the hot water acting on the flow path opening 12 is caused by the pressure of the hot water acting on the pressure receiving area of the connector 5, It is formed so as to antagonize the force in the valve opening direction, whereby it is possible to constitute an opening degree holding function for stably holding the valve opening position and the valve closing position of the valve member set by operating the handle. . The function of the driving force adjusting plate 34 can be replaced by using various methods such as reducing the diameter of the connector 5 or increasing the diameter of the flow path opening 12.
[0023]
The connector 5 inserted into the first hole 23 of the rotor 2 is sealed between the inner surface of the hole 23 by a sealing member 53, and is freely rotatable in the hole 23 and slides in the axial direction. A cylindrical portion 50 is freely inserted, and a small-diameter portion 51 having an engaging head 52 at the distal end for movably connecting the valve member 3 is provided at a lower end of the cylindrical portion 50. The small-diameter portion 51 having the engagement head 52 engages the bifurcated engagement portion 33 provided on the valve plate portion 31 of the valve member 3 with the small-diameter portion 51 from the side. Although it is possible to freely move along the small diameter portion 51, the structure is not limited to such a structure as long as the connection with the valve member 3 is freely movable.
[0024]
In addition, a groove 54 for fitting the plate-shaped head 41 of the handle 4 is provided at the upper part of the column 50, and the plate 50 and the plate-shaped head 41 of the handle 4 fitted in the groove 54 are penetrated. A pin hole 55 for inserting a connecting pin 56 is opened. The connector 5 is rotatably connected to the plate-shaped head 41 of the handle 4 by the pins 56, and the connector 5 is driven up and down by operating the tip of the handle 4 in the vertical direction. Is transmitted.
[0025]
The handle 4 includes a lever 40 and a plate-shaped head 41, and is connected to the connector 5 by inserting the above-mentioned pin 56 into a pin hole 55 provided in the plate-shaped head 41. Projections 43 are protruded from both sides of the plate-shaped head 41 on the front end side, and the plate-shaped head 41 is fitted into a radial groove 26 provided in an upper part of the cylindrical body 20 of the rotor 2. At the same time, the protrusion 43 is fitted and engaged with the enlarged portion 27 in the groove 26. The protrusion 43 is engaged with the enlarged portion 27 in the radial groove 26 and supports the handle 4 so that the handle 4 can be turned up and down about the fulcrum. Since the pin 56 can be moved only in the axial direction of the connector 5, the protrusion 43 moves along the rotation of the handle 4 in the enlarged portion 27 of the groove 26. 20 slightly moves in the radial direction.
[0026]
When the tip of the lever 40 is moved right and left, and the handle 4 is rotated in a horizontal plane, the cylindrical body 20 of the rotor 2 is moved into the rotor hole 11 of the valve shell 1 by the guide mechanism 21. Since the rotor 2 is rotatably fitted, the rotor 2 in which the plate-shaped head 41 of the handle 4 is fitted into the groove 26 can rotate around the central axis thereof together with the connector 5 by operating the handle. Become.
The rotation of the rotor 2 by the handle 4 changes the area in which the adjusting hole communicates with each of the rectangular openings 17a and 17b due to the rotational movement of the adjusting hole 25 of the cylindrical body 20. That is, the temperature of the outflow can be adjusted.
[0027]
The inner diameter of the first hole 23 in the rotor 2 or the outer diameter of the cylindrical portion 50 in the connector 5 inserted into the hole 23 is substantially the same as the diameter of the flow path opening 12 in the valve shell 1. Therefore, when the seal member 32 of the valve plate portion 31 approaches the valve seat 13 around the flow path opening 12 or closes in contact with the valve seat 13, the lower surface of the valve plate portion 31 and The pressure of the hot water hardly acts on the driving force adjusting plate 34, and the pressure of the hot water flowing into the upper surface side of the valve plate portion 31 is reduced by the inner surface of the seal member 32 on the upper surface of the valve plate portion 31 and the connector 5. , But most of them are offset, and the former has a slightly larger diameter than the latter, so that together with the force of the air pressure acting on the outer surface of the cylindrical portion 50 of the connector 5, the valve plate 31 has The force in the direction of pressing against the valve seat 13 acts, that is, the valve seat 13 3 by a self 緊作 for closing the flow passage opening 12 is closed. This valve-closing force closes the valve member 3 regardless of the position of the connector 5 as long as the seal member 32 of the valve member 3 that can freely move with respect to the connector 5 is within a floating range where the seal member 32 can contact the valve seat 13. It can be held at the valve position.
[0028]
On the other hand, when the flow rate is controlled by adjusting the opening amount of the flow path opening 12 in the valve seat 13 by raising and lowering the valve plate portion 31 by operating the handle, the upper and lower portions of the valve plate portion 31 are passed through the rectangular openings 17a and 17b. The pressure of the hot and cold water flowing into the chamber exerts substantially the same force on the upper and lower surfaces of the valve plate portion 31, and the pressure of the hot water also acts on the lower surface of the connector 5 in a direction to push up the connector, When the driving force adjusting plate 34 connected to the valve plate 31 via the grid-like extending member 35 is provided, the pressure of the hot water flowing out acts on the driving force adjusting plate 34 as well. Hardly acts as a force for moving the valve member 3 up and down.
Since the lower surface of the driving force adjusting plate 34 is almost exposed to the atmosphere, the force acting on the lower surface of the driving force adjusting plate 34 due to the pressure of the hot water can be ignored.
[0029]
As a result, the valve member 3 having the above-described configuration is configured such that the valve member 3 engages with the engagement head 52 at the distal end of the small-diameter portion 51 of the connector 5 as the connector 5 moves up and down by operating the handle 4. The valve plate portion 31 is moved up and down via the engaging portion 33 of 3, and the seal member 32 provided on the valve plate portion 31 comes into contact with and separates from the valve seat 13 to open and close the flow passage opening 12. The flow rate flowing out from the flow path opening 12 through the space between the grid-like extending members 35 is controlled according to the opening amount.
Further, as described above, the rotation of the rotor 2 by the handle 4 causes the adjustment hole 25 of the cylindrical body 20 to rotate, whereby the adjustment hole 25 is moved to the rectangular openings 17a and 17b in the valve outer shell 1. Is changed, the mixing ratio of hot and cold water, that is, the outflow temperature is adjusted according to the opening area.
Therefore, by operating a single handle, the temperature adjustment for changing the mixing ratio of hot and cold water and the flow rate adjustment for changing the opening amount of the flow path can be individually and independently performed.
[0030]
The adjusting hole 25 is always connected to one of the rectangular openings 17a and 17b. When the valve is opened, the space a above the valve plate 31 becomes a pool of hot and cold water, and the lower space b of the valve plate 31 is Since the sum of the widths of the openings formed between the extending members 35 is substantially equal to the length of the lower edge of the adjustment hole 25, the handle is moved up and down, that is, at a speed corresponding to the position of the valve plate 31. The above-mentioned constant speed flow path in which hot and cold water flows at a constant speed is provided. As a result, the flow rate is adjusted by the up and down movement of the lever 40. It should be further noted that the upper and lower surfaces of the valve plate portion 31 are always filled with equal pressure water and water in the spaces a and b. 31 is pressed, and this state does not change regardless of the position of the valve plate portion 31. Therefore, the function of maintaining the position of the valve plate portion 31, that is, the function of increasing the braking force is achieved.
[0031]
FIG. 6 illustrates a specific configuration of the seal member 53 suitable for being interposed between the first hole 23 in the cylindrical body 20 of the rotor 2 and the cylindrical portion 50 of the connector 5. The seal member 53 slidably contacts the cylindrical body 20 and the annular holding portion 53a fixedly held in the annular concave portion 50a of the cylindrical portion 50 of the connector 5 which slides with each other. An annular seal portion 53b for sealing between the annular seal portion 53b and a connecting portion 53c between the annular holding portion 53a and the annular seal portion 53b and projecting in an arc shape on the surface side that comes into contact with hot and cold water. It is molded in one piece. The connecting portion 53c is extended by the pressure of the hot and cold water acting on the connecting portion 53c to press the annular seal portion 53b against the contact surface thereof, thereby exhibiting a stable sealing function between the sliding portions. It is desirable that the back side of the connecting portion 53c be open to the atmosphere through the small holes 50b.
[0032]
The above-described sealing structure can be applied to a sealing member 22 between the inner surface of the rotor hole 11 in the valve shell 1 and the cylindrical body 20 of the rotor 2.
[0033]
【The invention's effect】
According to the water / water mixer tap of the present invention described in detail above, the water / water mixer tap is mainly composed of five parts: a valve shell, a rotor, a valve member, a connector, and a handle, which are easily formed of synthetic resin or the like. It can be easily formed and assembled, and each part can exhibit excellent functions.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of a hot and cold water mixing tap according to the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a transverse sectional view taken along line BB in FIG.
FIG. 5 is an explanatory diagram for explaining an operation of a valve plate portion.
FIG. 6 is an enlarged sectional view of a seal member used in the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Valve outer shell 2 Rotor 3 Valve member 4 Handle 5 Connector 10 Body 11 Rotor hole 12 Flow path opening 13 Valve seat 14 Flow path space 15 Outlets 16a, 16b Hot water introduction holes 17a, 17b Rectangular opening 20 Cylindrical Body 22 Sealing member 25 Adjusting hole 31 Valve plate 32 Sealing member 35 Extension material 36 Flow gap 40 Lever 41 Plate-shaped head 51 Small diameter portion 52 Engaging head 53 Sealing member

Claims (7)

A valve seat is formed around the flow path opening on the inner bottom surface of the rotor hole opened in the body, the flow path opening is communicated with the hot water outlet through the flow path space in the body, and the rotor hole is formed. A valve outer shell having a pair of hot and cold water introduction holes opened at positions close to each other on the inner circumference of the valve,
A cylindrical body rotatably fitted into a rotor hole in the valve outer shell; a pair of hot and cold water introduction holes in the rotor hole facing the cylindrical body; A rotor provided with an opening for connecting the openings at an arbitrary ratio and provided with an adjustment hole for setting a mixing amount of hot and cold water according to its rotational position,
A valve plate portion is formed so as to cover the inner bottom surface of the rotor hole in the valve outer shell, and comes into contact with and separates from the surrounding valve seat to open and close the flow passage opening with a seal member. Engagement is provided in the rotor in such a manner as to be communicated with the hot water introduction hole through the adjusting hole regardless of the operating position of the valve plate portion, and the valve plate portion is engaged with the connector so as to be freely movable. A portion is provided, and on the lower surface side of the valve plate portion, an extending member is provided which extends downward from the valve plate portion in proximity to the inner peripheral surface of the flow path opening, and a peripheral portion of the valve plate portion and the In the flow gap formed between the portion and the inner bottom face of the rotor hole, the width of the entrance to the flow gap formed by the adjustment hole and the width of the flow gap formed between the extending members are set. The sum of the widths of the outlets is made substantially equal, and the inlet and the outlet are made almost equal in height, A valve member constant speed passage is to be formed while extending from the inlet to the outlet,
A connector that is airtightly and axially slidably fitted into the rotor via a seal member, and connects between a handle and an engagement portion of the valve member;
The up and down movement of the lever raises and lowers the valve member for allowing hot water to flow out of the adjustment hole through the connector, and rotates the rotor by turning the lever to the left and right. A handle to make adjustments,
A hot and cold water mixing tap characterized by comprising: When the valve is opened, the fluid pressure acting on the facing portion to the constant velocity flow path around the lower surface of the valve plate portion and the fluid pressure acting on the upper surface of the corresponding valve plate portion become uniform, thereby eliminating the movement of the valve member due to the fluid pressure.
The hot and cold water mixing tap according to claim 1, wherein: An engaging portion that is movably engaged with a connector provided on a valve plate portion of the valve member is integrally formed with the valve plate portion, and an engagement head provided at a lower end of the connector has a leading end. A bifurcated portion that engages from the side with the small diameter portion having, and is movable along the small diameter portion;
The hot and cold water mixing tap according to claim 1 or 2, wherein: A pair of hot and cold water introduction holes communicating with positions close to each other on the inner peripheral surface of the rotor hole are partially parallel to the rotor hole drilled from the side opposite to the rotor hole in the valve outer shell so that the axis is parallel to the rotor hole. The communication opening formed between the inner peripheral surface of the rotor hole and each of the hot and cold water introduction holes was formed in a rectangular shape,
The hot and cold water mixing tap according to any one of claims 1 to 3, characterized in that: The diameter of the flow path opening in the valve shell and the outer shape of the connector slidably fitted in the rotor are made substantially the same diameter, and the valve plate portion is in contact with the valve seat around the flow path opening by the sealing member. In the closed state, a valve closing force is generated by the pressure of hot and cold water acting on the pressure receiving area within the seal diameter of the seal member that is larger than the pressure receiving area of the connector.
In the valve-open state where the flow path opening is opened, the force in the valve opening and closing direction due to the pressure of hot and cold water acting on the valve member is formed so as to oppose.
The hot and cold water mixing tap according to any one of claims 1 to 4, characterized in that: The handle for operating the rotor and the valve member is configured by connecting a plate-shaped head to the tip of the operating lever,
The plate-shaped head is rotatably connected to a connector engaged with the valve member by a pin, and slides radially with respect to the rotor but cannot move in the axial direction of the rotor. Engaged with
The hot and cold water mixing tap according to any one of claims 1 to 5, characterized in that: One or both of the seal members interposed between the rotor inner surface of the valve shell and the rotor and between the rotor and the connector,
An annular holding portion fixedly held by one member that slides with each other, an annular sealing portion that slidably abuts the other member and seals between the abutting surfaces, And a connecting portion that extends in an arc shape to the surface side that comes into contact with hot water between the annular seal portion and the hot water, and that extends by the pressure of the hot water acting thereon and presses the annular seal portion against its abutting surface. It is molded integrally with the body,
The hot and cold water mixing tap according to any one of claims 1 to 6, characterized in that:

Images