JPH0573058U - Hot and cold water mixing tap - Google Patents

Abstract

(57) [Summary] [Purpose] The thickness of the cartridge case is reduced by preventing a large torsional moment force from acting on the cartridge case.
As a result, the valve cartridge itself will be made smaller and lighter. A fixed valve body 35, a movable valve body 36, and a moving mechanism 3 for moving the movable valve body, which slides relative to the inside of a cartridge case 33 to stop water and generate mixed hot water of a desired temperature.
7 and a flow path 17, 18a for guiding water and hot water into the valve cartridge 32 by allowing the valve cartridge 32 to be accommodated in the upper end opening 31a and passing between the valve bodies 35 and 36. A hot and cold water mixing plug 10 having a plug body 31 in which 18b is formed, wherein a notch 31b for stopping rotation is provided at an upper edge portion of the plug body 10, and the notch is provided at an upper outer peripheral surface of the cartridge case 33. It is characterized in that an engaging protrusion 33c for engaging with 31b is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a hot and cold water mixing method in which hot water (hot water) supplied from a hot water supply source and low temperature water (water) supplied from a water supply source are mixed and hot water of a desired temperature is discharged from a discharge port. The present invention relates to a hot and cold water mixing tap for reducing the size and weight of a valve cartridge formed by unitizing a valve, in particular, a valve for accommodating a water stop and a mixed hot water of a desired temperature inside a cartridge case to generate a mixed hot water. ..

[0002]

[Prior Art]

 In places such as kitchens, bathrooms, and washrooms where hot water of approximately 30 to 45 ° C is used, hot water and water are supplied at the same time, and an appropriate amount of these are mixed to produce hot water of appropriate temperature. A stopper is used.

As this kind of hot and cold water mixing valve, a fixed valve body, a movable valve body and the movable valve which slide relatively in a substantially cylindrical cartridge case to stop water and generate mixed hot water of a desired temperature. As a means for non-rotatably attaching the valve cartridge to the stopper body by accommodating a body moving mechanism, a protrusion protruding downward on the outer bottom surface of the cartridge case is provided on the inner bottom surface of the valve chamber. It has been proposed that a concave hole is formed in each of the holes and the projection is fitted into the concave hole (see, for example, Japanese Patent Publication No. 57-200775, Japanese Utility Model Publication No. 2-71177, etc.). ..

Here, the rotation control of the lever handle for operating the moving mechanism for moving the movable valve body relative to the solid valve body (stopping the rotation of the lever handle) is performed at the upper portion of the valve cartridge. This is performed by causing a rotating member that rotates integrally with the lever handle to collide with a stopper fixed to the inner peripheral surface of the cartridge case.

[0005]

[Problems to be solved by the device]

 However, if the valve cartridge is attached to the stopper body at the bottom of the valve casing so as not to rotate and the rotation of the lever handle is restricted at the upper portion of the valve cartridge as in the above-mentioned conventional example, the support portion of the valve cartridge and the lever handle are not provided. As a result, the distance along the axis of the cartridge with the portion that receives the bending moment becomes longer, and when the rotation of the lever handle is restricted (stopped), a considerably large torsion moment acts on the cartridge case. Therefore, it is necessary to set the thickness of the cartridge case to a size that can withstand this torsional moment, and as a result, the outer shape of the cartridge case, and eventually the valve cartridge itself, becomes larger. there were.

In view of the above, the present invention reduces the wall thickness of the cartridge case as much as possible by preventing a large torsion moment force from acting on the cartridge case, which reduces the size of the cartridge case and hence the valve cartridge itself. The purpose is to provide lighter products.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the hot and cold water mixing valve according to the present invention slides relatively inside a substantially cylindrical cartridge case to stop water and generate mixed hot water of a desired temperature. Body and a moving mechanism for the movable valve body, a valve cartridge, and a stopper having the valve cartridge housed in an upper end opening and passing between the valve bodies to introduce water and hot water into the valve cartridge. A hot and cold water mixing stopper having a main body, wherein a notch for preventing rotation is provided at an upper edge portion of the stopper main body, and an engaging projection for engaging with the notch is provided on an upper outer peripheral surface of the cartridge case. It is characterized by octopus.

[0008]

[Action]

 According to the present invention configured as described above, by engaging the protrusion provided on the outer peripheral surface of the upper portion of the cartridge case with the notch provided on the upper edge portion of the stopper body, the valve cartridge is attached to the stopper body at the upper portion thereof. It can be fixed non-rotatably, so that the distance between the support part of the valve cartridge and the part that receives the bending moment by the lever handle along the axis of the cartridge is made as short as possible, and the cartridge case is This can be achieved by preventing a large torsional moment force from acting.

[0009]

【Example】

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

In FIG. 9, a hot and cold water mixing plug 10 has a water inflow passage 12 connected to a water supply source 11, a hot water inflow passage 14 connected to a hot water supply source 13, and water and hot water are mixed to generate mixed hot water. It is arranged between the mixing chamber 15 and the water inflow passage 12 and the hot water inflow passage 14 and the mixing chamber 15, and the flow rate ratio of water and hot water flowing into the mixing chamber 15 is automatically adjusted according to the set temperature. Automatic temperature control section 16, a mixed water flow path 17 communicating with the mixing chamber 15, and a water bypass flow extending from the middle of the water inflow path 12 and the hot water inflow path 14 to bypass the automatic temperature control section 16. The passage 18a and the hot water bypass passage 18b, a valve portion 19 for opening / closing and controlling the flow amount from the bypass passages 18a, 18b and the mixed water passage 17, and a discharge provided at a position downstream of the valve portion 19. From exit 20 Is made.

As a result, the automatic temperature control unit 16 automatically adjusts the mixing ratio of water and hot water to generate hot mixed water of a predetermined temperature (suitable temperature) in the mixing chamber 15, and the valve unit 19 further controls the water bypass passage 18 a. Alternatively, by adding an appropriate flow rate of water or hot water to the mixed hot water via the hot water bypass passage 18b, hot water having a temperature lower or higher than the set temperature (suitable temperature) set by the automatic temperature control unit 16 can be obtained. It is designed so that it can be easily obtained and discharged from the discharge port 20.

The automatic temperature adjusting unit 16 is provided with a set temperature adjusting unit 21 for freely adjusting the set temperature here.

An exploded perspective view of the hot and cold water mixing stopper 10 is shown in FIG. 1, and a vertical sectional front view is shown in FIG.

In the figure, reference numeral 31 is a plug main body, inside of which a part of which is omitted in the figure, the water inflow path 12, hot water inflow path 13, automatic temperature control section 16, mixed hot water A flow path 17, a water bypass flow path 18a, a hot water bypass flow path 18b, etc. are provided. Further, a valve cartridge 32 made of, for example, ceramic, which is provided with the above-mentioned valve portion 19 and the like as a unit, is housed in an opening portion 31a formed by opening upward in the upper portion of the stopper main body 31.

As shown in detail in FIG. 3, the valve cartridge 32 includes a substantially cylindrical cartridge case 33, first and second fixed valve bodies 34, 35 and a movable valve constituting the valve portion 19. The main body 36 and a moving mechanism 37 for moving the movable valve body 36 relative to the second fixed valve body 35 are mainly configured.

The movable valve body 36 slides the movable valve body 36 relative to the second fixed valve body 35 through the moving mechanism 37 to stop water and generate mixed hot water having a desired temperature. It is for.

That is, the first fixed valve body 34 is positioned and fixed to the lower end of the cartridge case 33 via the lateral protruding piece 34a, and the mixed water flow path 17, A total of three inflow holes 38a, 39a, 40a are provided which communicate with the hot water bypass passage 18b and the water bypass passage 18a, respectively. Further, the second fixed valve body 35 is positioned and fixed to the first fixed valve body 34 through the upward protrusion 34b, and inside the three fixed inlets 38a, 39a, 40a, respectively. Inflow holes 38b, 39b, 40b that communicate with each other are provided.

On the other hand, the movable valve body 36 has a smaller diameter than the second fixed valve body 35, but when the movable valve body 36 is superposed on the second fixed valve body 35, the movable valve body 36 does not protrude from the second fixed valve body 35. Even in such a position, the size is set so as to cover the three inflow holes 38b, 39b, 40b provided in the second fixed valve body 35, and the linear forward / backward movement in any direction on the second fixed valve body 35 is performed. And the circular movement is also possible, and an outflow portion 41 is provided on the sliding contact surface with the second fixed valve body 35, in which a part of the peripheral edge is cut out. The outflow portion 41 has an arc shape that is substantially the same size as or slightly larger than the three inflow holes 38b, 39b, 40b provided in the second fixed valve body 35.

Further, a notch 33a is provided on the lower peripheral wall of the cartridge case 33, and cutouts 34c, 35a are provided at positions corresponding to the notch 33a of the fixed valve bodies 34, 35, respectively. A discharge flow path communicating with the inside of the valve cartridge 32 and the discharge port 20 is formed here. As described above, by forming the discharge flow path communicating with the discharge port 20 from the downstream side of the valve portion 19 inside the cartridge case 33, the valve cartridge 32 can be downsized.

The moving mechanism 37 has a substantially cylindrical turning member 43 rotatably and undetachably held in the cartridge case 33 via a lock mechanism 42, and a central portion of the turning member 43. It mainly comprises a cross joint 45 mounted so that it can be swung in one direction along a long hole provided through a pin 44. The cross joint 45 passes through a central hole 46a of a ceramic plate 46. Then, it extends below the rotating member 43, and the lower end formed in a rectangular cross section reaches the inside of a recess 36a formed in the center of the movable valve element 36 and having a rectangular cross section.

As a result, the movable valve body 36 moves back and forth with the swing of the cross joint 45 about the pin 44, and with the rotation of the cross joint 44, the rotating member 43 and the movable valve body 35. Are synchronized and rotate in the same direction.

Here, the rotation member 43 is provided with a stopper piece 43a in a protruding manner, while the cartridge case 33 is formed with a stopper surface 33b which abuts against the stopper piece 43a and restricts the rotation. There is. That is, the rotation member 43 rotates with the rotation of the cross member 45, and when the rotation reaches a predetermined amount, the stopper piece 43a of the rotation member 43 contacts the stopper surface 33b of the cartridge case 33, It is configured so that it cannot rotate any further.

In order to attach the valve cartridge 32 to the stopper body 31 in a non-rotatable manner, a notch 31b for preventing rotation is provided on the upper edge portion of the stopper body 31, while the upper portion of the cartridge case 33 is provided. An engagement protrusion 33c that engages with the notch 31b is provided on the outer peripheral surface. Then, the engagement protrusion 33b is fitted and engaged in the notch 31b, so that the valve cartridge 32 is non-rotatably incorporated into the stopper body 31.

As a result, the valve cartridge 33 can be non-rotatably fixed to the plug body 31 at the upper portion thereof, and the support portion of the valve cartridge 33, that is, the engagement portion between the notch 31b and the engagement protrusion 33b, The distance along the axis of the cartridge 33 between the portion that receives the bending moment by the lever handle 51, that is, the contact portion between the stopper surface 33b and the stopper piece 43a is made as short as possible so that the cartridge case 33 has a large torsional moment. It is said that it is possible to achieve this thinning by preventing the force from acting.

The valve cartridge 33 is fixed by screwing the cartridge retainer 47 onto the upper portion of the stopper body 31, and as the cartridge retainer 47 is screwed, an index for supporting the index 48 at the upper end is provided. The support base 49 is also positioned and fixed via the protrusion 49a. As a result, the index 48 is supported so as not to rotate, that is, to prevent the index 48 from rotating due to the rotation of the lever handle 51 described below.

Further, a substantially cylindrical handle cover 50 is arranged so as to surround the index support base 49, and the lever handle 51 passes through an opening provided in the peripheral wall of the handle cover 50, The base end of the lever handle 51 is connected to the cross joint 45 via a toothed washer 52 and a countersunk screw 53. As the lever handle 51 moves in the vertical direction, the cross joint 45, and by extension, the movable valve body 36 moves in one direction, and the movable valve body 36 rotates as the lever handle 51 rotates. 43 is also configured to rotate.

Next, the operation of the valve portion 19 will be described with reference to FIGS. 4 to 8.

In FIG. 4, the three inflow holes 38 b, 39 b, 40 b of the second fixed valve body 35 are all blocked by the movable valve body 36 and the discharge is stopped. In this state, the lever handle 51 is located at the center and at the uppermost position.

From the state shown in FIG. 4, when the lever handle 51 is pushed down to the lowest position, the movable valve body 36 retracts to the state shown in FIG. 5, and the outflow portion 41 becomes the mixed hot water inflow hole 38b. Hot water of an appropriate temperature which is matched and set by the automatic temperature control unit 16 is discharged. The discharge flow rate of the mixed hot water (appropriate hot water) changes depending on the moving position of the movable valve body 36, and the maximum discharge flow rate is obtained when the movable valve body 36 is at the most retracted position (state of FIG. 5).

Subsequently, when the lever handle 61 is rotated to the left, the movable valve body 36 is also rotated to the left, and the outflow portion 41 is aligned with both the mixed hot water inflow hole 38b and the water inflow hole 39b, and the discharge port is discharged. The low-temperature hot water in which the cold water is mixed with the appropriate-temperature hot water flows out to the discharge flow path communicating with 20. In the process of rotation of the movable valve body 36, the matching ratio of the mixed hot water inflow hole 38b and the water inflow hole 39b of the outflow portion 41 changes in inverse proportion, that is, the matching ratio of the mixed hot water inflow hole 38b decreases. The matching rate of the inflow holes 39b increases. Then, by further rotating to the left, as shown in FIG. 7, the outflow portion 41 is aligned only with the water inflow hole 39b, and only low-temperature water is discharged.

When the lever handle 51 is pulled up in this state, the movable valve body 36 advances, and as shown in FIG. 8, the outflow portion 41 and the water inflow portion 39b are out of alignment, which causes water to flow out. Can be stopped.

Further, from the state shown in FIG. 5, by rotating the lever 56a to the right, the same operation as that in which the water inflow hole 39b is aligned with the outflow portion 41 is also performed in the hot water inflow hole 40b. Can be done.

That is, the relative movement of the movable valve body 36 with respect to the second solid valve body 35 due to the vertical tilt of the lever handle 51 allows the opening / closing and the flow rate to be adjusted, and the lever handle 51 can be rotated. The temperature of the movable valve body 36 can be adjusted by rotating the movable valve body 36 relative to the second solid valve body 35.

[0034]

[Effect of the device]

 Since the present invention has the above-mentioned structure, the valve cartridge can be fixed to the stopper main body at its upper part so as not to rotate, and thereby the support portion of the valve cartridge and the portion that receives the bending moment by the lever handle are connected to each other. The distance along the cartridge axis can be minimized to prevent large torsional moment forces from acting on the cartridge case. As a result, due to the relationship between the torsion moment and the strength of the cartridge case, the wall thickness can be made thinner, and the valve cartridge can be made smaller and lighter.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is likewise a vertical sectional front view.

FIG. 3 is likewise an exploded perspective view of the valve cartridge.

FIG. 4 is a plan view when the discharge is stopped, which is used for explaining the operation of the fixed valve body and the movable valve body.

FIG. 5 is a plan view at the time of discharging mixed hot water, which is used to explain the operation of the fixed valve body and the movable valve body.

FIG. 6 is a plan view of the mixed hot water and the cold water discharged to explain the operation of the fixed valve body and the movable valve body.

FIG. 7 is a plan view at the time of discharging cold water, which is used to explain the operation of the fixed valve body and the movable valve body.

FIG. 8 is a plan view when the discharge is stopped, which is used to explain the operation of the fixed valve body and the movable valve body.

FIG. 9 is a block diagram showing a basic configuration.

[Explanation of symbols]

10 Hot Water Mixing Plug 12 Water Inflow Channel 14 Hot Water Inflow Channel 16 Automatic Temperature Control Section 18a Water Bypass Channel 18b Hot Water Bypass Channel 19 Valve Section 20 Discharge Port 31 Plug Main Body 31a Same Opening 31b Same Notch 32 Valve Cartridge 33 Cartridge Case 33b Same stopper surface 33c Same engagement protrusion 34 First fixed valve body 35 Second fixed valve body 36 Movable valve body 37 Moving mechanism 38a, 38b, 39a, 39b, 40a, 40b Inlet port 41 Outflow part 43 Rotating member 43a Stopper Piece 45 Cross joint 51 Lever handle

Claims (2)

[Scope of utility model registration request] 1. A fixed valve body, a movable valve body, and a moving mechanism for moving the movable valve body, which slide relative to each other inside a substantially cylindrical cartridge case to stop water and generate mixed hot water of a desired temperature. A hot and cold water mixing plug having a valve cartridge, and a plug body having a flow passage for guiding water and hot water into the valve cartridge by allowing the valve cartridge to be accommodated in an upper opening and passing between the valve bodies, A hot and cold water mixing stopper characterized in that a notch for stopping rotation is provided at an upper edge portion of the stopper main body, and an engaging projection that engages with the notch is provided at an upper outer peripheral surface of the cartridge case. 2. The hot and cold water mixing valve according to claim 1, wherein the peripheral wall of the cartridge case is provided with a notch or an opening communicating with a discharge port.