JP2017161077A - Faucet for hot water and cold water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a faucet for hot water and cold water in which an engineering change for a member below a fixed valve is not required, only cold water can be discharged under a state in which an operation lever is placed at a front position and wastefulness in hot water can be prevented.SOLUTION: A faucet 1 for hot water and cold water has a fixed valve body 17 provided with a hot water flow-in valve hole, a cold water flow-in valve hole and a mixed water flow-out hole 24; a movable valve body 6 slidably overlapped and arranged at the fixed valve body 17 and formed with an opening part 5 where hot water got from the hot water flow-in valve hole and cold water got from a cold water flow-in valve hole; a lever handle 7 for operating the movable valve body 6, hot water discharging amount can be adjusted through vertical turning of the lever handle 7 and a temperature of hot water can be adjusted through right and left turning operation of the lever handle 7. The hot water flow-in valve hole and the cold water flow-in valve hole are formed symmetrically at the fixed valve body 17. The opening part 5 of the movable valve body 6 is communicated only with the cold water flow-in valve hole of the fixed valve body 17 when the lever handle 7 is operated to open under a state in which the lever handle 7 is positioned at an intermediate location between the hot water flow-in valve hole and the cold water flow-in valve hole of the fixed valve body 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hot and cold water mixing tap disposed in a kitchen sink, bathroom, or washstand, and more particularly hot water capable of adjusting the discharge amount of hot water and adjusting the temperature by turning the handle up and down and turning left and right. It relates to a mixing stopper.

  As a conventional single lever type hot and cold water mixing tap, for example, one shown in FIG. 7 is known. The hot and cold water mixing plug 70 has a water discharge pipe 72 attached to a main body 76 fixed to an installation surface (not shown) so that the water discharge pipe 72 can be turned left and right. A water supply pipe 74 and a hot water supply pipe 75 are connected to the bottom surface of the main body portion 76 so as to be rotatable. The amount of hot water discharged from the water outlet 73 of the water discharge pipe 72 is adjusted by turning the lever handle 71 up and down, and the temperature of the hot water discharged from the water outlet 73 is adjusted by turning the lever handle 71 left and right. It can be carried out.

  Specifically, as shown in FIG. 8, when the lever handle 71 is in a rotation range (mixing region M) of about 40 degrees left and right around the front position C, hot and cold mixed water is discharged from the water outlet 73. When the lever handle 71 is positioned in the rotation range (hot water region H) on the left side of the mixing region M, hot water is discharged from the spout 73, and in the rotation range (water region W) on the right side of the mixing region M. When the lever handle 71 is located, water is discharged from the water outlet 73.

  An on-off valve unit 80 as shown in FIG. 9 is accommodated in the main body 76 of the hot and cold mixing plug 70. As shown in FIG. 10, the on-off valve unit 80 includes a spacer 10, a housing 11, a packing 12, an operation lever 13, a lever guide 14, a support member 15, a movable valve body 16, a fixed valve body 17, a packing 18, and an O-ring 19. The bottom lid 20 and the packing 21 are formed.

  As shown in FIG. 11, a water inflow valve hole 22, a hot water inflow valve hole 23, and a mixed water outflow hole 24 are opened symmetrically in the fixed valve body 17, and the movable valve body 16 has water in the fixed valve body 17. An opening 25 is formed to allow hot water flowing in from the inflow valve hole 22 and the hot water inflow valve hole 23 to flow out to the mixed water outflow hole 24. In the on-off valve unit 80, the movable valve body 16 is slidably arranged on the upper surface of the fixed valve body 17. When the lever handle 71 shown in FIG. 7 is rotated up and down and left and right, the operation lever 13 tilts back and forth and rotates left and right, and the movable valve body 16 moves back and forth via a support member 15 connected to the lower end of the operation lever 13. Slide and turn left and right. Thereby, opening / closing and opening degree adjustment of the water inflow valve hole 22 and the hot water inflow valve hole 23 of the fixed valve body 17 are performed.

  Here, based on FIG.8 and FIG.12, the opening-and-closing mechanism 26 comprised with the movable valve body 16 and the fixed valve body 17 is demonstrated. FIG. 12 is a plan view showing the opening / closing mechanism 26.

  FIG. 12A shows the opening / closing mechanism 26 when the lever handle 71 (see FIG. 7) is in the left-turned position (left position L) with the lever handle 71 turned downward, and FIG. 12B is the lever handle. FIG. 12C shows the opening / closing mechanism 26 when 71 is in the front position C in the state where the lever 71 is rotated downward, and FIG. 12C is in the position where the lever handle 71 is rotated in the right direction (right position R). The opening / closing mechanism 26 is shown. When the lever handle 71 is rotated left and right while the lever handle 71 is rotated downward, as shown in FIGS. 12A to 12C, the mixed water outflow hole 24 of the fixed valve body 17 can be moved. Although the communication with the opening 25 of the valve body 16 is maintained, the water inflow valve hole 22 and the hot water inflow valve hole 23 of the fixed valve body 17 are kept closed by the movable valve body 16. No hot water is discharged from 73 (see FIG. 7).

  On the other hand, FIG. 12 (d) shows the opening / closing mechanism 26 when the lever handle 71 (see FIG. 7) is rotated leftward (left position L) with the lever handle 71 rotated upward, and FIG. The opening / closing mechanism 26 is shown when the lever handle 71 is in the front position C with the lever handle 71 rotated upward, and FIG. 12F shows the position rotated right (the right position R) with the lever handle 71 rotated upward. The opening / closing mechanism 26 is shown in FIG. In the state shown in FIG. 12 (d), the hot water inflow valve hole 23, the opening 25 and the mixed water outflow hole 24 communicate with each other, so that hot water is discharged from the water outlet 73 (see FIG. 7). In the state shown, since the water inflow valve hole 22, the hot water inflow valve hole 23, the opening 25 and the mixed water outflow hole 24 communicate with each other, the hot and cold mixed water is discharged from the water outlet 73 (see FIG. 7), and FIG. ), The water inlet valve hole 22, the opening 25, and the mixed water outlet hole 24 communicate with each other, so that water is discharged from the water outlet 73 (see FIG. 7).

When the lever handle 71 at the front position C (see FIG. 8) is unintentionally opened in the hot / cold mixing tap 70 shown in FIG. 7, the opening / closing mechanism 26 shown in FIG. 11 normally moves from the closed state shown in FIG. Since it changes to the open state of FIG.12 (e), it discharges in the state in which the hot water was mixed from the water outlet 73. FIG. For this reason, even when the user needs only water, the hot water mixed water is actually discharged from the water outlet 73, resulting in wasteful use of hot water and wasting of hot water supply energy.
Further, when the user uses the hot water mixing tap 70 without worrying about the temperature of the hot water discharged, that is, when the user first tries to start water discharge, regardless of the front position C, the lever handle can be turned left and right. In the moving range, the probability that hot water mixed water is discharged from the water outlet 73 is increased, and wasteful use of hot water is generated from the viewpoint of saving hot water, which wastes hot water supply energy.

Therefore, a single lever type hot and cold water mixing tap having a function of discharging only water when the lever handle in the front position is opened has been proposed (for example, see Patent Document 1).
In the single lever type hot and cold water mixing tap described in Patent Document 1, the opening shape of the movable valve body is the same as the conventional shape, and the opening shape of the fixed valve body is made extremely asymmetrical, so that the lever handle is located at the front position. In this case, only the water inflow valve hole of the fixed valve seat passes through the flow path formed by the opening of the movable valve body and communicates with the mixed water outflow hole of the fixed valve body.

JP 9-4736 A

  In the prior art structure described in Patent Document 1, the valve body is tilted due to the influence of the water pressure difference caused by the extremely different opening ratio of the two inflow valve holes of the fixed valve body. If the load is applied, the durability (the movement may deteriorate due to repeated sliding) may be impaired.

  The problem to be solved by the present invention is to prevent the water stoppage and durability from being impaired due to the influence of the water pressure difference caused by the extremely different opening ratio of the two inflow valve holes of the fixed valve body, and the lever An object of the present invention is to provide a hot and cold water mixing tap that can discharge only water while the handle is in the front position and can prevent wasteful use of hot water. Moreover, regardless of the front position, the probability that the hot and cold water mixture is discharged is reduced by adopting a configuration in which only water is discharged in a predetermined left-right rotation range with respect to the front position of the lever handle. An object of the present invention is to provide a hot and cold water faucet that can prevent wasteful use of hot water.

The hot and cold water mixing valve of the reference example of the present invention includes a fixed valve body having a hot water inflow valve hole, a water inflow valve hole, and an outflow hole, and a slidably superposed arrangement on the fixed valve body. A movable valve body in which an opening through which hot water from the water and water from the water inflow valve hole flows is formed, and a lever handle for operating the movable valve body,
The fixed valve body and the movable valve body slide on a predetermined sliding plane, and by rotating the lever handle on a first plane perpendicular to the sliding plane, The hot water discharge amount is adjustable,
By rotating the lever handle on a second plane parallel to the sliding plane, the temperature of the hot water discharged from the opening can be adjusted, and the lever handle is in a state where the lever handle is in the front position. When the opening operation is performed, the movable valve body is formed with a closing portion that closes the hot water inflow valve hole while communicating the water inflow valve hole and the outflow hole,
The closing portion includes a first wall surface formed continuously with a front wall surface of the opening, and a second wall surface formed via the first wall surface and a bent portion, and the lever handle is When the lever handle is opened in the front position, the first wall surface is arranged at a predetermined distance from the central end of the hot water inlet valve hole in plan view. To do.

  With such a configuration, the position and shape of the opening formed in the movable valve body are adjusted without changing the positional relationship between the hot water inflow valve hole and the water inflow valve hole formed in the fixed valve body. Thus, when the lever handle is turned up and down in a state where the lever handle is located between the hot water inlet valve hole and the water inlet valve hole of the fixed valve plate (for example, the lever handle is located in front), Only the water inflow valve hole can be opened and closed while the inflow valve hole is closed. Therefore, even if the user unconsciously opens the lever handle located in the front, only the water is discharged without mixing the hot water, so that wasteful use of hot water can be prevented.

  With such a configuration, hot water is mixed and discharged when the user unconsciously rotates the lever handle on the first plane, that is, opens the lever handle at any position in the entire rotation range of the lever handle. Since the probability that only water is discharged increases, the wasteful use of hot water unintended by the user can be prevented.

  According to the present invention, it is possible to prevent the water stoppage and durability due to the influence of the water pressure difference caused by the extremely different opening ratio of the two inflow valve holes of the fixed valve body from being impaired, and the lever handle is in the front position. Accordingly, it is possible to provide a hot and cold water mixing plug that can discharge only water in a state and can prevent wasteful use of hot water. In addition, by adopting a configuration in which only water is discharged within a predetermined left-right rotation range with respect to the front position of the lever handle regardless of the front position, hot water is mixed when the user unconsciously performs an opening operation. An object of the present invention is to provide a hot and cold water mixing faucet that can prevent the wasteful use of hot water that is not intended by the user because the probability of being discharged is small and the probability of discharging only water is increased.

It is a vertical sectional view showing a hot and cold water mixing tap which is a first embodiment according to a reference example of the present invention. FIG. 2 is a partially omitted plan view of the hot and cold water mixing tap shown in FIG. 1. FIG. 2 is a vertical sectional view of an on-off valve unit that constitutes the hot and cold water mixing tap shown in FIG. 1. It is a disassembled perspective view of the on-off valve unit shown in FIG. It is an expansion perspective view of the movable valve body and fixed valve body which are shown in FIG. It is a schematic diagram which shows the opening / closing mechanism by the movable valve body and fixed valve body which are shown in FIG. It is a perspective view which shows the conventional hot-water mixing stopper. FIG. 8 is a partially omitted plan view of the hot and cold water mixing tap shown in FIG. 7. It is a left view of the on-off valve unit which comprises the hot / cold water mixing stopper shown in FIG. FIG. 10 is an exploded perspective view of the on-off valve unit shown in FIG. 9. FIG. 10 is an enlarged perspective view of the movable valve body and the fixed valve body shown in FIG. 9. It is a top view which shows typically the opening-closing mechanism comprised with the movable valve body and fixed valve body which are shown in FIG. It is a schematic diagram which shows the opening / closing mechanism by the movable valve body and fixed valve body which show 2nd embodiment which concerns on the reference example of this invention. It is a schematic diagram which shows the opening / closing mechanism by the movable valve body and fixed valve body which show 3rd embodiment which is one Embodiment of this invention. It is a schematic diagram which shows the opening / closing mechanism by the movable valve body and fixed valve body which show 4th embodiment which concerns on the reference example of this invention. It is explanatory drawing which shows the opening superposition | polymerization part and opening area in 1st embodiment which concerns on the reference example of this invention. It is explanatory drawing which shows the 1st plane and 2nd plane which are the rotation directions of the lever handle of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, a hot and cold water mixing tap 1 of a first embodiment according to a reference example of the present invention has a water discharge pipe 2 attached to a main body portion 8 fixed to an installation surface S so as to be rotatable left and right. A lever handle 7 is attached to the upper end of 8 so as to be able to turn left and right and turn up and down, and a water supply pipe 4 and a hot water supply pipe (not shown) are connected to the bottom surface of the main body 8. The amount of hot water discharged from the water outlet 3 of the water discharge pipe 2 is adjusted by rotating the lever handle 7 up and down, and the temperature of the hot water discharged from the water outlet 3 is adjusted by rotating the lever handle 7 left and right. Do.

  As shown in FIG. 2, when the lever handle 7 is in a rotation range (water region W) of about 50 degrees to the right and about 10 degrees to the left around the front position C, water is discharged from the water outlet 3. When the lever handle 7 is positioned in the rotation range (mixing region M) of about 30 degrees to the left from the water region W, the hot and cold mixed water is discharged from the spout 3 and about 10 to the left from the mixing region M. When the lever handle 7 is located in the rotation range (hot water region H), hot water is discharged from the water outlet 3. In addition, each angle which shows the water area | region W mentioned above, the mixing area | region M, and the hot water area | region H is an example, and is not limited to these numerical values. Further, in this embodiment, the rotation range of the lever handle 7 from the front position C to the right and left is the same, but this is also an example, and the opening operation is performed with the lever handle 7 in the front position C. In this case, since only water needs to be discharged from the water outlet 3, the rotation range of the lever handle 7 from the front position C to the right and left does not have to be the same.

An on-off valve unit 9 as shown in FIG. 3 is accommodated in the main body 8 of the hot-water mixing tap 1.
FIG. 3A shows a time when the on-off valve unit 9 is in a closed state, and FIG. 3B shows a time when the on-off valve unit 9 is in an open state. When the lever handle 7 (see FIG. 1) is turned up and down, the operation lever 13 of the on-off valve unit 9 tilts back and forth and is connected to the lower end of the operation lever 13 as shown in FIGS. 3 (a) and 3 (b). The movable valve body 6 slides back and forth along the sliding plane of the upper surface of the fixed valve body 17 via the support member 15. As a result, the water inlet valve hole 22 and the hot water inlet valve hole 23 of the fixed valve body 17 are opened and closed.

  As shown in FIG. 4, the on-off valve unit 9 includes a spacer 10, a housing 11, a packing 12, an operation lever 13, a lever guide 14, a support member 15, a movable valve body 6, a fixed valve body 17, a packing 18, and an O-ring 19. The bottom lid 20 and the packing 21 are formed. Members constituting the on-off valve unit 9 are the same as those of the conventional on-off valve unit 80 shown in FIG.

As shown in FIG. 5, the fixed valve body 17 is provided with a water inlet valve hole 22, a hot water inlet valve hole 23 and a mixed water outlet hole 24 symmetrically, and the movable valve body 6 has water in the fixed valve body 17. An opening 5 for allowing hot water flowing in from the inflow valve hole 22 and the hot water inflow valve hole 23 to flow out to the mixed water outflow hole 24 is provided. The shape of the opening 5 in a plan view has a substantially square shape. As shown in FIG. 3, the movable valve body 6 is slidably arranged on the upper surface of the fixed valve body 17 in the on-off valve unit 9, and an opening / closing mechanism 30 is formed by these members. As described above, when the lever handle 7 shown in FIG. 1 is turned up and down and turned left and right, the operation lever 13 tilts back and forth and turns left and right and is movable through the support member 15 connected to the lower end of the operation lever 13. The valve body 6 slides back and forth and rotates left and right.
Thereby, opening / closing and opening degree adjustment of the water inflow valve hole 22 and the hot water inflow valve hole 23 of the fixed valve body 17 are performed.

Here, based on FIG. 2, FIG. 6, the function of the opening / closing mechanism 30, an effect, etc. are demonstrated.
6A shows a position (left position) in which the lever handle 7 (see FIG. 1) rotates leftward on a first plane perpendicular to the sliding plane of the upper surface of the fixed valve body 17 and rotates downward. L) shows the opening / closing mechanism 30, and FIG. 6 (b) shows the front position when the lever handle 7 is rotated downward on the first plane perpendicular to the sliding plane of the upper surface of the fixed valve body 17. FIG. 6 (c) shows the opening / closing mechanism 30 when it is at C, and FIG. 6 (c) rotates clockwise with the lever handle 7 rotated downward on a first plane perpendicular to the sliding plane of the upper surface of the fixed valve body 17. The opening / closing mechanism 30 when in the moved position (right position R) is shown.

  When the lever handle 7 is rotated downward on a first plane perpendicular to the sliding plane of the upper surface of the fixed valve body 17, the lever handle 7 is moved with respect to the sliding plane of the upper surface of the fixed valve body 17. When the left and right are rotated on a second plane parallel to each other, as shown in FIGS. 6A to 6C, the mixed water outflow hole 24 of the fixed valve body 17 and the opening 5 of the movable valve body 6 However, since the water inflow valve hole 22 and the hot water inflow valve hole 23 of the fixed valve body 17 are kept closed by the movable valve body 6, hot water is supplied from the water outlet 3 (see FIG. 1). Does not discharge. That is, if the lever handle 7 is rotated downward, hot water from the spout 3 (see FIG. 1) even if the lever handle 7 is rotated left and right within the range from the right position R to the left position L shown in FIG. Does not discharge.

  On the other hand, FIG. 6D shows a state in which the lever handle 7 is rotated upward on the first plane perpendicular to the sliding plane of the upper surface of the fixed valve body 17 and the sliding plane of the upper surface of the fixed valve body 17. FIG. 6E shows the opening / closing mechanism 30 when it is in a left-turned position (left position L) on a second plane parallel to each other. FIG. FIG. 6 (f) shows the opening / closing mechanism 30 when it is at the front position C in the state of being rotated upward on the first plane perpendicular to FIG. 6, and FIG. On the second plane parallel to the sliding plane of the upper surface of the fixed valve body 17 in the state of being rotated upward on the first plane perpendicular to the first plane, the right side position (right position R) is shown. Yes.

  In the state shown in FIG. 6D, the hot water inflow valve hole 23 and the mixed water outflow hole 24 are communicated with each other by the opening overlapping portion 25 where the hot water inflow valve hole 23 and the opening 5 are superposed. Hot water is discharged from 1). In the state shown in FIG. 6 (e), the water inflow valve hole 22 and the mixed water outflow valve hole 24 communicate with each other by the opening overlapping portion 25 where the water inflow valve hole 22 and the opening 5 are overlapped. Only water is discharged. In the state shown in FIG. 6 (f), since the water inflow valve hole 22 and the mixed water outflow valve hole 24 communicate with each other by the opening overlapping portion 25 where the water inflow valve hole 22 and the opening 5 overlap, the water outlet 3 Only water is discharged.

  In addition, the rotation of the lever handle on the first plane is shown in FIGS. 6 (a) and 6 (d), FIG. 6 (b) and FIG. 6 (e), FIG. 6 (c) and FIG. The first plane is 101 shown in FIG. Further, the rotation of the lever handle on the second plane is shown in FIGS. 6 (a), 6 (b), 6 (c), 6 (d), 6 (e), and 6 (f). The second plane is 102 shown in FIG.

  Thus, in the hot and cold water mixing tap 1 shown in FIG. 1, the lever handle 7 at the front position C (see FIG. 2) is rotated on the first plane perpendicular to the sliding plane of the upper surface of the fixed valve body 17. In other words, when the opening operation is performed, the opening / closing mechanism 30 changes from the closed state shown in FIG. 6B to the opened state shown in FIG. 6E, but the hot water inlet valve hole 23 remains closed and the water inlet valve hole remains closed. 22, the opening 5, and the mixed water outflow hole 24 are superposed, so that only water is discharged from the water outlet 3. Therefore, even if the user unconsciously opens the lever handle 7 at the front position C, only water is discharged from the spout 3 without mixing hot water. Use can be prevented. Since the shape of the opening 5 is not limited, when the opening / closing mechanism 30 is in the state shown in FIG. 6 (e), the mixed water outflow hole 24 communicates only with the water inflow valve hole 22 through the opening 5. I just need it.

  Further, members constituting the on-off valve unit 9 are the same as those of the conventional on-off valve unit 80 shown in FIG. 10 except for the movable valve body 6 as shown in FIG. Therefore, the position and shape of the opening 5 formed in the movable valve body 6 can be changed without changing the positional relationship between the hot water inflow valve hole 23 and the water inflow valve hole 22 formed symmetrically in the fixed valve body 17. By adjusting, when the lever handle 7 is turned up and down at the position where the lever handle 7 comes to the front (the center position of the lever handle's left and right turning range), Only the inflow valve hole 22 can be opened and closed.

  On the other hand, since the hot water inflow valve hole 23 and the water inflow valve hole 22 formed in the fixed valve body 17 are symmetrical, the two inflow valve holes (the hot water inflow valve hole 23, the water inflow valve) of the fixed valve body 17 are formed. The movable valve body 17 is tilted by the influence of the water pressure difference due to the difference in the opening ratio of the holes 22), the water stoppage is impaired, or the movement of the movable valve body 17 is poor due to repeated sliding in a state where an uneven load is applied. And durability is not impaired.

  Furthermore, the hot water inflow valve hole 23 and the water inflow valve hole 22 are formed symmetrically on the fixed valve body 17, so that the opening ratio of these inflow valve holes (the hot water inflow valve hole 23 and the water inflow valve hole 22). It is not necessary to change the design of the members below the fixed valve body 17 (such as the packing 18, the bottom cover 20, and the faucet body 31), which are necessary when changing the above. Therefore, as shown in FIG. 10, by replacing the movable valve body 16 constituting the conventional on-off valve unit 80 with the movable valve body 6, it is possible to obtain the same function and effect as the hot water mixing tap 1. In addition, by replacing the on-off valve unit, the existing water faucet can obtain the same functions and effects as the hot and cold water mixing faucet.

  On the other hand, the opening 5 formed in the fixed valve body 6 is on the second plane parallel to the sliding plane of the upper surface of the fixed valve body 17, and the lever handle 7 is rotated on the second plane. The direction in which the temperature of the hot water rises with the rotation from the state shown in FIG. 6 (e) to the state shown in FIG. 6 (d) (clockwise direction in FIG. 6) is defined as the first rotation direction. ) From the state shown in FIG. 6 (f) to the state shown in FIG. 6 (f), the direction in which the temperature of the hot water decreases (counterclockwise direction in FIG. 6) is the second turning direction shown in FIG. As the lever handle 7 rotates in the first rotation direction, the opening overlapping portion where the water inflow valve hole 22 and the hot water inflow hole 23 of the fixed valve body 17 overlap with the opening 5 of the movable valve body 6 overlaps. The direction in which the first plane passes through 25 is the first direction 202, and the opening overlapping portion 2 is accompanied by the rotation of the lever handle 7 in the second rotation direction described above. When the direction in which the first plane passes is the second direction 201, the opening area 26 that can overlap the hot water inflow valve hole and the water inflow valve hole is fixed so that the movable valve body 6 and the fixed valve body 17 slide together. With respect to the first plane (see FIG. 17) perpendicular to the sliding plane of the upper surface of the valve body 17, the second direction side is formed larger than the first direction side described above.

  16 (a) is the same as FIG. 6 (e), and FIG. 16 (b) is the same as FIG. 6 (f). As shown in FIG. The valve hole and the water inflow valve hole indicate a range where the lever handle overlaps with the opening when the lever handle is rotated in the entire rotation range. Further, as shown in FIG. 16, the opening area 26 indicates an area where the hot water inflow valve hole or the water inflow valve hole and the opening 5 can overlap when the lever handle is rotated in the entire rotation range.

  Due to the shape of the opening 5, the lever handle 7 is mixed and discharged when the user unconsciously opens the lever handle 7 at any position in the left-right rotation range of the lever handle regardless of the front position. Therefore, it is possible to provide a hot and cold water mixing faucet that can prevent wasteful use of hot water that is not intended by the user.

  Next, 2nd, 4th embodiment which concerns on the reference example of this invention, and 3rd embodiment which is one Embodiment of this invention are described based on FIGS. In addition, description is abbreviate | omitted suitably about the part which is common in 1st embodiment which concerns on the reference example of the above-mentioned this invention.

  A second embodiment will be described with reference to FIG. The second embodiment is different from the first embodiment only in that the shapes of the hot water inlet valve hole 23 and the water inlet valve hole 22 formed in the fixed valve body 17 are different from those of the first embodiment. As the lever handle turns in the second turning direction, the opening area that can overlap the hot water inlet valve hole and the water inlet valve hole when the direction in which the first plane passes through the opening overlapping portion is the second direction. Other configurations and relationships such as the above relationship are the same as those in the first embodiment.

  The hot water inflow valve hole 23 and the water inflow hole 22 of the fixed valve body 17 of the second embodiment have the same area on the sliding plane of the upper surface of the fixed valve body 17, and the projections 28 are formed on the half-moon-shaped part 27. It has a shape like this. Therefore, the intermediate position between the hot water inflow hole 23 and the water inflow hole 22 in the second embodiment is in the state shown in FIGS. 13 (b) and 13 (e).

  In the state of FIG. 13B, as in the state of FIG. 6B, the opening 5 is not overlapped with any of the hot water inflow valve hole 23 and the hot water inflow valve hole 22, and All the water inflow valve holes 22 are closed. For this reason, hot water is not discharged from the spout 3 (refer FIG. 1).

  When the lever handle 7 is rotated upward from this state, the state shown in FIG. In this state, the opening 5 partially overlaps with the water inflow valve hole 22 and does not overlap with the hot water inflow valve hole 23. For this reason, only water flowing in from the water inflow valve hole 22 is discharged from the water outlet 3 through the opening 5, and hot water from the hot water inflow valve hole 23 is not discharged.

  Thus, even in the second embodiment, hot water is mixed even if the user unconsciously opens the lever handle 7 at the front position C as in the first embodiment. In addition, since only water is discharged from the water discharge port 3, wasteful use of hot water can be prevented.

  Further, similarly to the first embodiment, the fixed valve body 17 is formed in the movable valve body 6 without changing the positional relationship between the hot water inflow valve hole 23 and the water inflow valve hole 22 formed substantially symmetrically. By adjusting the position of the opening 5 and the shape of the opening, the lever handle 7 is turned up and down at the position where the lever handle 7 comes to the front (the center position of the lever handle's left and right turning range), so Only the water inflow valve hole 22 can be opened and closed while the valve hole 23 is closed.

  On the other hand, since the hot water inflow valve hole 23 and the water inflow valve hole 22 formed in the fixed valve body 17 are substantially bilaterally symmetric, the two inflow valve holes (the hot water inflow valve hole 23, the water inflow) of the fixed valve body 17 are formed. The movable valve body 17 is tilted by the influence of the water pressure difference due to the difference in the opening ratio of the valve hole 22), the water stoppage is impaired, or the movement of the movable valve body 17 is caused by repeated sliding in a state where an uneven load is applied. There will be no deterioration and durability will not be lost.

  Further, the hot water inflow valve hole 23 and the water inflow valve hole 22 are formed substantially symmetrically in the fixed valve body 17 so that the inflow valve holes (the hot water inflow valve hole 23 and the water inflow valve hole 22) are opened. It is not necessary to change the design of members below the fixed valve body 17 (packing 18, bottom cover 20, faucet body 31, etc.) required when the ratio is changed. Therefore, as shown in FIG. 10, by replacing the movable valve body 16 constituting the conventional on-off valve unit 80 with the movable valve body 6, it is possible to obtain the same function and effect as the hot water mixing tap 1.

Next, a third embodiment, which is an embodiment of the present invention, will be described with reference to FIG.
In this embodiment, the shapes of the hot water inflow valve hole 23 and the water inflow valve hole 22 of the fixed valve body 17 are the same as those of the first embodiment according to the reference example, but the hot water inflow valve hole 23 and the water inflow valve hole 22 are the same. The position where is formed is different from the first embodiment according to the reference example. More specifically, the direction in which the temperature of the hot water rises with the rotation of the lever handle 7 on the second plane on the second plane parallel to the sliding plane of the upper surface of the fixed valve body 17 is the first. When the rotation direction is set and the direction in which the temperature of the hot water falls is the second rotation direction, the intermediate position between the hot water inflow valve hole 23 and the water inflow valve hole 22 is as shown in FIGS. 14B and 14E. The lever handle 7 is formed on the first rotation direction side from the center position of the rotation range on the second plane.

  Therefore, in 3rd Embodiment which is one Embodiment of this invention, in the state which the lever handle 7 is located in the middle of the hot water inflow valve hole 23 and the water inflow valve hole 22, it will be in the state in which hot water mixed water is discharged. Yes. However, as shown in FIG. 14 (e), due to the shape of the opening 5 formed in the movable valve body 6, at the center position of the rotation range of the lever handle 7 on the second plane (downward in the figure). Only the water inflow hole 22 communicates with the opening 5, that is, the water inflow hole 22 and the opening overlapping part 25 are superposed.

  On the other hand, the opening 5 formed in the movable valve body 6 of the third embodiment which is an embodiment of the present invention has the same shape as the opening 5 of the first embodiment according to the reference example. As described for the fixed valve body in the first embodiment according to the reference example, the lever handle 7 is rotated on the second plane on the second plane parallel to the sliding plane of the upper surface of the fixed valve body 17. The direction in which the temperature of hot water rises with movement is the first turning direction, the direction in which the temperature of hot water falls is the second turning direction, and the lever handle 7 turns in the first turning direction. The direction in which the first plane passes through the opening overlapping portion 25 where the water inflow valve hole 22, the hot water inflow hole 23 of the fixed valve body 17 and the opening 5 of the movable valve body 6 overlap is defined as a first direction. 7 is an opening area that can overlap the hot water inlet valve hole and the water inlet valve hole when the direction in which the first plane passes through the opening overlapping portion 25 is the second direction. Reference numeral 26 denotes a first member perpendicular to the sliding plane of the upper surface of the fixed valve body 17 on which the movable valve body 6 and the fixed valve body 17 slide. Relative to the plane, the points towards the first direction side than the second direction described above are larger are the same as in the first embodiment according to the reference example.

  Therefore, in the hot and cold water mixing faucet according to the third embodiment which is an embodiment of the present invention, the lever handle 7 is not conscious by the user at any position in the left-right rotation range of the lever handle 7 regardless of the front position. Since the probability of hot water being mixed and discharged when the opening operation is reduced and the probability of only water being discharged is increased, it is possible to provide a hot and cold water mixing faucet that can prevent unintended use of hot water by the user. .

  Next, a fourth embodiment will be described based on FIG. The fourth embodiment differs from the third embodiment only in that the opening areas of the hot water inflow valve hole 23 and the water inflow valve hole 22 formed in the fixed valve body 17 are different and are not symmetrical. About a structure, it is the same as that of 3rd embodiment.

Therefore, in the fourth embodiment, similarly to the third embodiment, when the first plane is located between the hot water inflow valve hole 23 and the water inflow valve hole 22, the hot water mixed water is discharged. ing.
However, as in the third embodiment, as shown in FIG. 15 (e), only the water inflow hole 22 is present at the center position (downward in the drawing) of the rotation range of the lever handle 7 on the second plane. The opening 5 communicates, that is, the water inflow hole 22 and the opening 5 are superposed.

  Further, the opening 5 of the fixed valve body 6 of the fourth embodiment is on the second plane parallel to the sliding plane of the upper surface of the fixed valve body 17, so that the lever handle 7 can be rotated on the second plane. The direction in which the temperature of the hot water rises is the first turning direction, the direction in which the temperature of the hot water falls is the second turning direction, and is fixed as the lever handle 7 turns in the first turning direction. The direction in which the first plane passes through the opening overlapping portion 25 where the water inlet valve hole 22, the hot water inlet hole 23 of the valve body 17 and the opening 5 of the movable valve body 6 overlap is defined as the first direction. With the rotation in the second rotation direction described above, the hot water inflow valve hole and the water inflow valve hole of the opening 5 may overlap when the direction in which the first plane passes through the opening overlapping portion 25 is the second direction. The opening area 26 is a first plane perpendicular to the sliding plane of the upper surface of the fixed valve body 17 on which the movable valve body 6 and the fixed valve body 17 slide. Against it, the point where towards the first direction side than the second direction described above are larger is the same as the first to third embodiments.

  For this reason, even in the hot and cold water mixing faucet of the fourth embodiment, when the lever handle 7 is unintentionally opened at any position in the left / right rotation range of the lever handle regardless of the front position, Since there is a low probability that water will be mixed and discharged, and a high probability that only water will be discharged, it is possible to provide a hot and cold water mixing faucet that can prevent wasteful use of hot water that is not intended by the user.

  In the present embodiment, the fixed valve body has been described as an example of the open / close valve unit including the mixed water outflow hole. However, the present invention is not limited to this, and passes through the space of the opening of the movable valve body. A type in which the mixed water outflow passage through which the hot water passes is provided outside the fixed valve body can also be applied.

  The hot and cold water mixing tap of the present invention can be widely used in a general house or a restaurant kitchen as a water and hot water supply equipment to be placed in a kitchen sink, bathroom, or washstand.

DESCRIPTION OF SYMBOLS 1 Hot water mixing tap 2 Water discharge pipe 3 Water discharge port 4 Water supply pipe 5 Opening part 6 Movable valve body 7 Lever handle 8 Main body part 9 On-off valve unit 10 Spacer 11 Housing 12, 18, 21 Packing 13 Operation lever 14 Lever guide 15 Support member 17 Fixed valve element 19 O-ring 20 Bottom cover 30 Opening / closing mechanism 31 Water faucet body 22 Water inflow valve hole 23 Hot water inflow valve hole 24 Mixed water outflow hole 25 Open overlapping part 26 Opening area 27 Half-moon shaped part 28 Projection part 101 First plane 102 Second plane 201 Second direction 202 First direction

Mixing valve of Reference Example of the present invention, the hot water inlet valve holes, water inlet valve bore, a fixed valve body outlet hole is opened, the sliding is freely polymerized arranged on the fixed valve body, said water inlet valve A movable valve body formed with an opening through which hot water from the hole and water from the water inflow valve hole flows, and a lever handle for operating the movable valve body, the fixed valve body and the movable The amount of hot water discharged from the opening can be adjusted by sliding the valve body on a predetermined sliding plane and rotating the lever handle in a first plane perpendicular to the sliding plane. A hot and cold water mixing faucet that can adjust the temperature of hot water discharged from the opening by rotating the lever handle in a second plane parallel to the sliding plane; The direction in which the temperature of the hot water rises with the rotation of the lever handle at the first rotation direction The direction in which the temperature of the hot water decreases with the rotation of the lever handle on the second plane is the second rotation direction, and the outflow hole of the fixed valve body The hot water inflow valve hole and the water inflow valve hole of the fixed valve body are formed on the same circumference in plan view, and the hot water inflow valve of the fixed valve body is formed symmetrically with respect to the center line. A hole is formed on the first rotation direction side from the center line, and at least a part of the water inflow valve hole is provided on the first rotation direction side from the center line; When the lever handle is opened with the lever handle in the front position, the movable valve body includes a closing portion that closes the hot water inflow valve hole while communicating the water inflow valve hole and the outflow hole. The closed portion is continuous with the front wall surface of the opening. A first wall surface formed, and a second wall surface formed via the first wall surface and a bent portion, and the lever handle is opened in a state where the lever handle is in a front position. In some cases, the first wall surface is arranged at a predetermined distance in a state in which the center side end portion of the hot water inflow valve hole is parallel in a plan view.

Claims (1)

A fixed valve body having a hot water inflow valve hole, a water inflow valve hole, and an outflow hole, and a superposed slidable arrangement on the fixed valve body, the hot water from the hot water inflow valve hole and the water inflow valve hole from A movable valve body having an opening into which water flows, and a lever handle for operating the movable valve body,
The fixed valve body and the movable valve body slide on a predetermined sliding plane, and by rotating the lever handle on a first plane perpendicular to the sliding plane, The amount of hot water discharged can be adjusted, and the temperature of the hot water discharged from the opening can be adjusted by rotating the lever handle on a second plane parallel to the sliding plane.
When the lever handle is opened while the lever handle is in the front position, a closing portion that closes the hot water inflow valve hole while communicating the water inflow valve hole and the outflow hole is the movable valve body. Is formed,
The closing portion includes a first wall surface formed continuously with a front wall surface of the opening, and a second wall surface formed via the first wall surface and a bent portion, and the lever handle is When the lever handle is opened in the front position, the first wall surface is arranged at a predetermined distance from the central end of the hot water inlet valve hole in plan view. Hot water and water mixing faucet.

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