JP3882194B1 - Hot water mixing apparatus and hot water mixing faucet provided with the same - Google Patents

Abstract

A hot and cold water mixing device capable of improving temperature control performance and a hot and cold water mixing faucet provided with the same.
The present invention relates to a hot water / water mixing device (20) for mixing and discharging supplied hot water and water, the hot water / water mixing device main body (21) being moved within the hot water / water mixing device main body. A main valve body (30) for changing the flow rates of the flowing hot water and water, a biasing means (32) for generating a biasing force so that the main valve body slides in a predetermined direction, and a main valve body The temperature sensitive urging means (34) that generates an urging force in the opposite direction to the urging means so that the urging force changes according to the temperature of the mixed hot water, and the urging means or By covering at least a part of the temperature sensitive urging means, the shield member that suppresses the dynamic pressure of the water and hot water flowing into the hot water / mixing device main body from acting directly on the urging means or the temperature sensitive urging means ( 64).
[Selection] Figure 2

Description

  TECHNICAL FIELD The present invention relates to a hot water / water mixing device and a hot / cold water mixing faucet equipped with the same, and in particular, a hot water / water mixing device that mixes supplied hot water and water and discharges hot water adjusted to an appropriate temperature, and hot water / water mixed water equipped with the same. Regarding the stopper.

  JP-A-8-42744 (Patent Document 1) describes a hot and cold water mixing device. In this hot and cold water mixing device, a temperature sensitive spring and a bias spring are arranged on both sides of a cylindrical main valve body slidably arranged inside the cylindrical hot and cold water mixing device main body, and the urging force by these springs is balanced. The main valve body is configured to be moved. With this structure, when the temperature of the mixed hot water rises, the main valve body increases the urging force of the temperature-sensitive spring, and the gap between the hot water side seat surface formed in the hot water mixing apparatus body and the main valve body Is narrowed, and the gap between the water side seat surface and the main valve body is widened. Thereby, the temperature of the hot water discharged from the hot water mixing apparatus is adjusted to a predetermined temperature.

JP-A-8-42744

  However, in the hot and cold water mixing apparatus described in JP-A-8-42744, the hot water and the flow of water that have flowed into the hot water and water mixing apparatus main body collide with the main valve body, the bias spring, the temperature sensitive spring, etc. therein, In addition, there is a problem that the main valve body is moved by the dynamic pressure of water. That is, in the hot and cold water mixing device of the type described in Japanese Patent Application Laid-Open No. 8-42744, the main valve body is moved to a position where the biasing force acting on the main valve body and the biasing force of the temperature sensitive spring are balanced, The temperature is adjusted. In addition to these energizing forces, when the main valve body is moved by the dynamic pressure of hot water and water acting on the main valve body, etc., the temperature of the hot water discharged from the hot water / water mixing device deviates from the set temperature, There is a problem that the temperature control performance deteriorates, for example, the temperature of the battery becomes unstable.

  In addition, when the hot water and the flow of water flowing into the hot water / mixer main body collide with the main valve body, bias spring, temperature sensitive spring, etc. therein, the flow resistance of the hot / cold water mixer increases and the hot water discharged is discharged. There is a problem that the flow rate of the liquid drops.

Accordingly, an object of the present invention is to provide a hot and cold water mixing device capable of improving temperature control performance and a hot and cold water mixing faucet provided with the same.
Another object of the present invention is to provide a hot water / water mixing device capable of increasing the flow rate of discharged hot water and a hot water / water mixing faucet equipped with the same.

In order to solve the above-described problems, the present invention is a hot water / water mixing device that mixes supplied hot water and water and discharges hot water adjusted to an appropriate temperature, the hot water / water mixing device main body, and the hot water / water mixing device main body. The main valve body is movably disposed inside the main body and changes the flow rate of hot water and water flowing into the hot and cold water mixing apparatus main body, and the main valve body is disposed in the hot water and water mixing apparatus main body. The urging means for generating the urging force so as to slide in the direction and the urging force disposed in the hot water / mixing device main body and urging force in the direction opposite to the urging means so that the main valve body is slid A temperature-sensing biasing means in which the biasing force changes in accordance with the temperature of the hot water mixed into the hot water mixing apparatus main body, and the biasing means or the temperature sensing biasing means in the hot water mixing apparatus main body. They arranged to surround at least a portion, and flows into the hot and cold water mixing device body Mizu及Hydrodynamic pressure of hot water, the biasing means, or has a suppressing shield member from acting directly on the thermosensitive biasing means, the hot and water mixed flows into the hot and cold water mixing device body, hot water It passes between the inner wall surface of a mixing apparatus main body and the outer side of a shield member, and is discharged from the hot-water mixing apparatus main body .

  In the present invention configured as described above, the main valve body movably disposed inside the hot water / water mixing device main body is moved by the urging force generated by the urging means and the temperature-sensing urging means, and the main valve body is moved. Is moved, the hot water flowing into the hot water mixing apparatus main body and the flow rate of the water are changed, and the temperature of the hot water discharged is adjusted. Further, a shield member is disposed in the hot and cold mixing device main body so as to cover at least a part of the urging means or the temperature-sensitive urging means. This shield member suppresses that the dynamic pressure of the water and hot water which flowed into the hot water mixing apparatus main body acts directly on the biasing means or the temperature sensitive biasing means.

  According to the present invention configured as described above, the shield member suppresses the dynamic pressure of water and hot water flowing into the hot water / mixer main body from acting directly on the biasing means or the temperature sensitive biasing means. The dynamic pressure acting on the urging means or the temperature-sensitive urging means can be prevented from adversely affecting the movement of the main valve body, and the temperature adjustment performance can be improved. Further, according to the present invention configured as described above, since hot water and water having a high flow velocity are prevented from directly colliding with the urging means or the temperature-sensitive urging means, the flow path resistance in the hot water mixing apparatus main body is prevented. Can be reduced, and the discharge flow rate from the hot and cold mixing device can be increased.

In the present invention, preferably, the shield member is formed with an inflow hole for allowing the mixed hot water to flow into a portion covering the temperature-sensitive biasing means.
In the present invention configured as described above, the hot water mixed in the hot water / water mixing device main body flows into the shield member through the inflow hole and comes into contact with the temperature-sensitive biasing means.

  According to the present invention thus configured, the large dynamic pressure of the mixed hot water is prevented from directly acting on the temperature sensitive biasing means, while the temperature change of the hot water mixed with the temperature sensitive biasing means is prevented. It is possible to respond quickly and generate a biasing force according to the temperature of the hot water to adjust the temperature of the discharged hot water.

In this invention, Preferably, the shield member is being fixed with respect to the hot-water mixing apparatus main body.
According to the present invention thus configured, it is possible to prevent a large dynamic pressure from acting on the urging means or the temperature-sensitive urging means without adversely affecting the movement of the main valve element.

  In the present invention, preferably, the main valve body and the shield member are substantially cylindrical, and the shield member is disposed inside the main valve body in a substantially concentric shape with respect to the main valve body. A leg portion that extends inward from the inner wall surface through the shield member is provided, and the shield member has a leg portion surrounding portion that covers at least a part of the periphery of the leg portion.

  In the present invention configured as described above, the leg portion extending inward from the inner wall surface of the main valve body is covered with the leg surrounding portion of the shield member, and a large dynamic pressure acts on the leg portion of the main valve body. Is prevented.

  According to the present invention configured as described above, since a large dynamic pressure is prevented from acting on the leg portion of the main valve body, the main valve body is slid out of the dynamic pressure acting on the main valve body. The direction component to be moved in the moving direction is reduced, and the dynamic pressure acting on the main valve element can be prevented from adversely affecting the temperature control performance.

  In the present invention, preferably, the inside of the hot and cold water mixing apparatus main body is formed in a substantially cylindrical shape, the urging means and the temperature sensitive urging means are disposed on substantially the central axis in the hot and cold water mixing apparatus main body, and the shield member is The outer sides of the urging means and the temperature-sensitive urging means are substantially concentrically covered.

  In the present invention configured as described above, hot water and water flowing into the hot water mixing apparatus main body are mixed while flowing mainly in the annular space between the inner wall surface of the hot water mixing apparatus main body and the outside of the shield member. And discharged.

  According to the present invention configured as described above, the inflowing hot water and water mainly flow through the annular space between the hot water mixing device main body and the shield member. The discharge flow rate can be increased.

  The hot and cold water mixing faucet of the present invention includes a hot and cold water mixing device of the present invention, a faucet body that houses the hot and cold water mixing device, and an on-off valve that switches between a water discharge state and a water stop state of the hot water mixed by the hot water and water mixing device. And a discharge part for discharging the mixed hot water.

According to the hot and cold water mixing apparatus of the present invention and the hot and cold water mixing faucet provided therewith, the temperature control performance can be improved.
Moreover, according to the hot and cold water mixing apparatus of the present invention and the hot and cold water mixing faucet equipped with the same, the flow rate of discharged hot water can be increased.

Next, a hot and cold water mixing faucet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIG. 1 thru | or FIG. 5, the hot / cold water mixing faucet by 1st Embodiment of this invention is demonstrated.
FIG. 1 is a perspective view showing the entire hot and cold water mixing faucet according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view of the hot and cold water mixing device built in the hot and cold water mixing faucet according to the present embodiment, and FIG. 3 is a cross-sectional view taken along line III-III in FIG.

  As shown in FIG. 1, a hot and cold water mixing faucet 1 according to an embodiment of the present invention includes a faucet body 2 and a hot water supply leg 4 for supplying hot water from a water heater (not shown) to the faucet body 2. And a water supply leg 6 for supplying tap water to the faucet body 2. Furthermore, the hot-water / water-mixing faucet 1 has a hot water temperature adjustment dial 8 attached to the left end portion of the faucet body 2 and a spout water switching handle 10 attached to the right end portion. The hot water / water mixing faucet 1 includes a currant 12 and a shower head 14 which are discharge portions for discharging temperature-controlled hot water. Further, the faucet body 2 incorporates a switching valve 16 that is an on-off valve. The hot and cold water mixing faucet 1 of the present embodiment mixes hot water and water supplied from the hot water supply leg 4 and the water supply leg 6, respectively, so that the temperature is set by the hot water temperature adjusting dial 8, thereby By operating the water switching handle 10, the water is discharged from the currant 12 or the shower head 14.

The hot water supply leg 4 is configured to connect a hot water supply pipe (not shown) provided on the wall surface to the faucet body 2 and supply hot water to the faucet body 2.
The water supply leg 6 is configured to connect a water pipe (not shown) provided on the wall surface and the faucet body 2 to supply water to the faucet body 2.

  The faucet body 2 incorporates a hot and cold water mixing device 20 (FIG. 2) for mixing hot water and water introduced through the hot water supply leg 4 and the water supply leg 6 and adjusting them to a desired temperature. . Moreover, the discharge water switching handle 10 attached to the faucet body 2 switches the switching valve 16 built in the faucet body 2 by rotating this, so that the water stop state and the water discharge state from the currant 12 are switched. The water discharge state from the shower head 14 is switched. When the discharge water switching handle 10 is rotated toward the currant, hot water mixed at an appropriate temperature is discharged from the currant 12 by the hot water / mixing device 20 (FIG. 2), and the discharge water switching handle 10 is rotated toward the shower. Then, hot water mixed at an appropriate temperature is discharged from the shower head 14.

  Moreover, the hot water temperature adjusting dial 8 operates the hot water mixing device 20 built in the faucet body 2 by rotating the dial 8 so that the temperature of the hot water adjusted by the hot water mixing device 20 can be changed. It is configured.

  Next, with reference to FIG. 2 thru | or FIG. 5, the hot water mixing apparatus 20 incorporated in the hot water mixing faucet 1 of this embodiment is demonstrated. FIG. 4 is an exploded perspective view of the hot water / water mixing device 20. FIG. 5 is a perspective view of a shield member built in the hot and cold mixing device 20.

  As shown in FIGS. 2 and 3, the hot water / water mixing device 20 includes a first main body member 22, a second main body member 24 fitted in the first main body member 22, and a feed connected to the hot water temperature adjusting dial 8. It has a screw 26 and a sliding member 28 that is screwed into the feed screw 26 and slides within the first body member 22 when the feed screw 26 is rotated. The hot and cold mixing device 20 is a main valve body 30 that is movably disposed inside the first main body member 22 and a biasing means that biases the main valve body 30 in the right direction in FIGS. 2 and 3. A bias spring 32 and a temperature sensing spring 34 which is a temperature sensing biasing means for biasing the main valve body 30 in the left direction in FIGS. 2 and 3 opposite to the bias spring 32 are provided. In the present embodiment, a coil spring made of a shape memory alloy is used as the temperature sensitive spring 34.

  As shown in FIGS. 2 to 4, the first main body member 22 has a substantially cylindrical shape, and the hot water / water mixing apparatus main body 21 is formed by fitting the second main body member 24 located on the right side in FIGS. 2 and 3. Is configured. Moreover, the 1st main body member 22 is each provided with the hot water inlet 22a for flowing in hot water, and the water inlet 22b for flowing water in the circumferential direction. Further, the left end surface of the hot water inlet 22 a in FIG. 3 is formed as a hot water side seat surface 22 c that comes into contact with the main valve body 30.

  The second main body member 24 has a substantially cylindrical shape, and a column 24a extending in the axial direction from one end portion toward the other open end portion is formed at the center thereof. The second body member 24 is attached to the first body member 22 by fitting the opened end portion into the end portion of the first body member 22. Further, the open end of the second main body member 24 is formed as a water-side seat surface 24 b that comes into contact with the main valve body 30. Furthermore, a discharge port 24c through which hot water mixed in the hot water mixing apparatus main body 21 flows out is formed at the end of the second main body member 24 opposite to the water side sheet surface 24b.

  The feed screw 26 is rotatably disposed inside the first main body member 22. A spline portion 26a to which the hot water temperature adjusting dial 8 is attached is formed at one end portion of the feed screw 26, and a feed male screw portion 26b to be screwed with the sliding member 28 is formed at the other end portion. ing.

  The sliding member 28 has a substantially cylindrical shape, and is slidably disposed inside the first main body member 22. An axial groove 28 a (FIG. 4) is formed outside the sliding member 28, and the groove 28 a is a protrusion (not shown) formed in the first main body member 22 in the axial direction. )), The rotation of the sliding member 28 relative to the first main body member 22 is restricted. Further, inside the sliding member 28, a feed female screw portion 28 b that is screwed with the feed male screw portion 26 b of the feed screw 26 is formed. Accordingly, when the feed screw 26 is rotated, the sliding member 28 is slid in the axial direction of the first main body member 22.

Next, a mechanism for moving the main valve body 30 in accordance with the temperature of hot water mixed in the hot water / mixing device main body 21 will be described.
As shown in FIGS. 2 and 3, the main valve body 30 is a substantially cylindrical member, and is disposed so as to be slidable in the axial direction along the inner wall surface of the generally cylindrical hot and cold water mixing apparatus main body 21. Moreover, the both ends of the main valve body 30 are formed with seat portions that contact the hot water side seat surface 22c or the water side seat surface 24b by sliding in the axial direction. A generally cylindrical boss portion 30 a is formed on the central axis of the main valve body 30. Further, three leg portions 30b (only one is shown in FIG. 2) are formed so as to extend from the inner wall surface of the main valve body 30 to the boss portion 30a. These three leg portions 30b are formed to extend in the radial direction at intervals of 120 ° from the central boss portion 30a. A guide shaft 30c is formed so as to extend in the axial direction from the center of the boss portion 30a. The guide shaft 30c is slidably received in an axial bore 24d formed in the support post 24a. This guides the sliding of the main valve body 30 in the hot and cold mixing device main body 21.

  Further, on the left side of the main valve body 30 in FIGS. 2 and 3, a movable support 38, a bias spring 32, and a spring retainer metal 36 are arranged. The movable strut 38 is a cylindrical member, and an enlarged diameter portion 38a is formed at the end of the main valve body 30 side. The spring retainer 36 is a donut plate-shaped bracket with a raised central portion. A C clamp 36 a is attached to the end of the movable support 38 opposite to the main valve body 30 to position the spring retainer 36. The bias spring 32 is sandwiched between the enlarged diameter portion 38 a of the movable support 38 and the spring retainer 36 and is disposed around the movable support 38.

  Further, on the right side of the main valve body 30 in FIGS. 2 and 3, a movable sleeve 40 that is a biasing force balancing member and a temperature-sensitive spring 34 are disposed so as to surround the column 24 a of the second main body member 24. Yes. The movable sleeve 40 is a substantially cylindrical member, and is slidably disposed around the support post 24a. Further, the temperature-sensitive spring 34 is disposed so as to surround the column 24 a, the left end in FIGS. 2 and 3 abuts the movable sleeve 40, and the right end is the inner wall surface of the second main body member 24. It arrange | positions so that it may contact | abut to an edge part.

  Further, as shown in FIG. 2, the movable support column 38 and the movable sleeve 40 are in contact with both side surfaces of the leg portion 30 b of the main valve body 30. When the sliding member 28 is moved in the right direction in FIGS. 2 and 3, and the sliding member 28 comes into contact with the spring retainer 36, the enlarged-diameter portion 38 a of the movable column 38 is biased by the bias spring 32. Thus, it is urged to the right. On the other hand, in this state, the movable sleeve 40 is urged leftward in FIGS. 2 and 3 by the urging force of the temperature-sensitive spring 34. For this reason, the leg portion 30b sandwiched between the movable support column 38 and the movable sleeve 40 receives urging forces in opposite directions from the enlarged diameter portion 38a of the movable support column 38 and the distal end portion of the movable sleeve 40.

  When the hot and cold mixing device 20 is used, the movable support 38 and the movable sleeve 40 are moved to a position where the biasing force of the bias spring 32 and the biasing force of the temperature-sensitive spring 34 are balanced. As the movable support 38 and the movable sleeve 40 move, the leg 30b sandwiched between them is pressed, and the main valve body 30 is moved in the axial direction.

  On the other hand, as shown in FIGS. 2 and 3, a rubber O-ring 42, which is a hot water separator, is disposed on the outer periphery of the main valve body 30. The O-ring 42 is located between the outer periphery of the main valve body 30 and the inner wall surface of the first main body member 22, and hot water and water flowing into the hot water mixing apparatus main body 21 are mixed outside the main valve body 30. Is prevented. Further, a legged spacer ring 46 which is a position regulating member is disposed adjacent to the O-ring 42. As shown in FIG. 4, the legged spacer ring 46 is an annular ring having six legs 46a extending in the axial direction. As shown in FIG. 3, the distal end of the leg portion 46 a is disposed so as to contact the water side sheet surface 24 b of the second main body member 24. Further, a step portion 22 d provided on the inner wall of the first main body member 22 is formed on the opposite side of the legged spacer ring 46. Thereby, the position of the O-ring 42 is regulated by the step 22 d on the inner wall of the first main body member 22 and the spacer ring 46 with legs, and is positioned at a predetermined position in the first main body member 22.

  On the other hand, a spring fitting 48 is disposed on the left end surface of the first main body member 22 in FIGS. 2 and 3. The spring fitting 48 is engaged with the proximal end portion of the spline portion 26 a so as to rotate together with the feed screw 26. Further, an O-ring 50 is disposed around the base end of the spline portion 26a in order to press the spring metal 48 against the base end portion of the spline portion 26a. The spring metal fitting 48 has two leaf spring portions 48a extending in an arc shape, and an engaging portion 48b formed at the tip thereof and bent into a mountain shape (FIG. 4).

  As shown in FIG. 4, radial spline portions 22 e provided on the outer peripheral portion are formed on the end surface of the first main body member 22. An engaging portion 48b of a spring metal fitting 48 is pressed against the spline portion 22e via a leaf spring portion 48a. With this configuration, when the feed screw 26 is rotated, the spring metal fitting 48 is rotated together. At this time, the engaging portion 48b pressed against the spline portion 22e gets over the spline crest so that the feed screw 26 is rotated. A feeling of clicking is given.

  On the other hand, cylindrical filters 52 and 54 are arranged outside the first main body member 22 so as to cover the hot water inlet 22a and the water inlet 22b, respectively, and dust mixed in hot water or water, It is prevented from flowing into the hot and cold mixing device 20.

  Further, as shown in FIGS. 2 and 3, a cylindrical shield member 64 is disposed inside the hot water / water mixing device main body 21 so as to surround the bias spring 32, the temperature sensitive spring 34, and the like. The shield member 64 is disposed concentrically with respect to the main valve body 30 and the inner wall surface of the hot water mixing apparatus main body 21 so as to penetrate the cylindrical main valve body 30.

  FIG. 5A is a perspective view of the shield member 64 in an exploded state, and FIG. 5B is a perspective view of the assembled state. As shown in FIG. 5A, the shield member 64 is assembled from a shield member main body 64a and a shield member cap 64b. Further, as shown in FIG. 5B, three oval holes 66 through which the leg 30b of the main valve body 30 is passed are formed on the side surface of the shield member 64 (two in FIG. 5). Only shown). Around the oval hole 66, an outer peripheral surrounding wall 67, which is a leg surrounding portion that covers the periphery of the leg 30b, is formed. Furthermore, nine round holes, which are inflow holes for allowing the hot water mixed in the hot water / mixer main body 21 to flow into the shield member 64, are formed on the side surface of the shield member 64 covering the temperature sensitive spring 34. 68 is formed (only six are shown in FIG. 5).

  Further, three spacer protrusions 70 are formed on the side surface of the shield member 64 (only two are shown in FIG. 5). Further, a spacer ring 71 is formed on the outer periphery of the end of the shield member 64. The spacer protrusion 70 and the spacer ring 71 are in contact with the inner wall surface of the hot water / mixing device main body 21, thereby positioning the shield member 64 at substantially the center in the hot water / mixing device main body 21. Further, a flange portion 72 (FIG. 2) extending inward in the radial direction is formed at one end portion of the shield member 64. As shown in FIGS. 2 and 3, the flange portion 72 is sandwiched between the temperature-sensitive spring 34 and the end portion of the second main body member 24, and the position of the shield member 64 with respect to the hot water mixing apparatus main body 21 is set. It is fixed.

Next, with reference to FIG. 1 thru | or FIG. 5, the effect | action of the hot / cold water faucet 1 by embodiment of this invention is demonstrated.
First, the user of the hot and cold water mixing tap 1 sets the hot water temperature adjusting dial 8 to a desired temperature. Here, when the hot water temperature adjusting dial 8 is set to the minimum temperature, the sliding member 28 is positioned at the left end in FIGS. In this state, since the sliding member 28 is separated from the spring retainer 36, the biasing force by the bias spring 32 does not act, and the hot water side seat portion of the main valve body 30 is heated by the biasing force of the temperature sensing spring 34. It abuts on the sheet surface 22c. That is, only the water can flow into the hot water / mixer main body 21.

  Next, when the user operates the hot water temperature adjusting dial 8 to rotate the feed screw 26 in order to increase the set temperature, the sliding member 28 is moved rightward in FIGS. The moving member 28 comes into contact with the spring retainer 36. As a result, the biasing force of the bias spring 32 also acts on the main valve body 30, and the movable sleeve 40 and the movable support column 38 are moved to a position where the biasing force of the bias spring 32 and the biasing force of the temperature sensitive spring 34 are balanced. The With this movement, the leg 30b of the main valve body 30 is pressed by the movable sleeve 40 or the movable support column 38, and the main valve body 30 is also moved.

  After setting the hot water temperature adjusting dial 8, when the user operates the spout water switching handle 10 to switch the switching valve 16 from the water stop position to the water discharge position from the currant 12 or the shower head 14, the currant or shower Water discharge from is started. When water discharge starts, the hot water introduced from the hot water supply leg 4 flows into the hot water inlet 22a via the filter 52, and the water introduced from the water supply leg 6 passes through the filter 54 to the water inlet. It flows into 22b. The hot water that flows in from the hot water inlet 22a passes between the hot water side seat portion of the main valve body 30 and the hot water side sheet surface 22c and flows into the hot water mixing device body 21, and the water that flows in from the water inlet 22b is mainly used. It flows between the water-side seat portion of the valve body 30 and the water-side seat surface 24 b and flows into the hot water / mixer main body 21.

  The hot water that has flowed into the hot water mixing apparatus main body 21 flows in the right direction in FIGS. 2 and 3 through the inside of the main valve body 30. Further, the water flowing into the hot water / mixing device main body 21 is mixed with the hot water flowing through the main valve body 30 and flows out from the discharge port 24c. At this time, the mixed hot water and water are made to have a substantially uniform temperature and flow around and inside the temperature-sensitive spring 34. The hot water flowing out from the discharge port 24c is discharged from the currant 12 or the shower head 14 through the switching valve 16 (FIG. 1).

  When the temperature of the hot water flowing around and inside the temperature-sensitive spring 34 is higher than the set temperature, the temperature-sensitive spring 34 acts to extend, so that the urging force by the temperature-sensitive spring 34 increases. As a result, the movable sleeve 40 is moved to the left side in FIGS. 2 and 3, and the biasing force by the temperature-sensitive spring 34 and the biasing force by the bias spring 32 are balanced at that position. As the movable sleeve 40 moves, the main valve body 30 is also moved leftward. By moving the main valve body 30 to the left, the distance between the hot water side seat portion and the hot water side seat surface 22c is shortened, and the distance between the water side seat portion and the water side seat surface 24b is long. Therefore, the ratio of the water flowing into the hot water / mixing device main body 21 is increased, and the temperature of the discharged hot water is decreased.

  On the contrary, when the temperature of the hot water flowing around and inside the temperature-sensitive spring 34 is lower than the set temperature, the urging force by the temperature-sensitive spring 34 decreases, and the movable sleeve 40 moves in the right direction in FIGS. Accordingly, the main valve body 30 is also moved in the right direction, and the temperature of the discharged hot water rises. By these actions, the temperature of hot water discharged from the currant 12 or the shower head 14 is adjusted to the set temperature.

  The hot water flowing in between the hot water side sheet portion and the hot water side sheet surface 22c and the water flowing in between the water side sheet portion and the water side sheet surface 24b Passing through a narrow gap between the two, the flow velocity becomes faster. As described above, most of the hot water and water that flowed in at a high flow velocity collide with the shield member 64 disposed in the hot water / mixer main body 21 to change the direction of flow, mainly on the outer side of the shield member 64 as an axis. It flows in the direction and flows out from the discharge port 24c. That is, since the bias spring 32, the movable support 38, the movable sleeve 40, and the temperature sensitive spring 34 are covered with the shield member 64, the hot water and water flowing into the hot water / mixer main body 21 are large in these parts. It is prevented that a large dynamic pressure is applied by directly colliding with the flow velocity.

  Further, since the leg portion 30b of the main valve body 30 is also covered with the outer peripheral surrounding wall 67 of the shield member 64, a large dynamic pressure of the flowing hot water and water does not act on the leg portion 30b. Further, since the outer wall surface and the inner wall surface of the cylindrical portion of the main valve body 30 are directed in the axial direction, even if dynamic pressure is applied thereto, the main valve body 30 is moved in the axial direction by the dynamic pressure. There are few things.

  As described above, since the shield member 64 is arranged so as to cover the bias spring 32, the temperature sensitive spring 34, and the like, the dynamic pressure of the flowing hot water and water directly acts on those components, and other than the biasing force of the spring. The main valve body 30 is moved by this force, and adverse effects on the temperature adjustment function of the hot and cold mixing device 20 are prevented.

  On the other hand, the mixed hot water and water mainly flow into the shield member 64 through the round hole 68 and come into contact with the temperature-sensitive spring 34. The temperature-sensitive spring 34 depends on the temperature of the mixed hot water and water. Generate a biasing force. The flow rate of the mixed hot water and water flowing into the shield member 64 through the round hole 68 is greatly reduced as compared with the flow rate when flowing through a narrow gap between each sheet portion and the sheet surface. Therefore, the action of the temperature sensitive spring 34 is not adversely affected.

  According to the hot and cold water mixing faucet of the first embodiment of the present invention, the dynamic pressure of the water and hot water flowing into the hot and cold mixing device main body 21 is the bias spring 32, the temperature sensitive spring 34, the movable column 38, the movable sleeve 40, Or since the shield member 64 suppresses acting directly on the leg part 30b of the main valve body 30, it can prevent that the temperature control function of the hot-water mixing apparatus 20 is adversely affected by dynamic pressure.

  Further, according to the hot and cold water mixing faucet of the present embodiment, the shield member 64 prevents hot water and water having a large flow velocity from directly colliding with the bias spring 32 or the temperature sensitive spring 34. The flow path resistance inside is reduced, and the discharge flow rate from the hot and cold mixing device 20 can be increased.

  Furthermore, according to the hot and cold water mixing faucet of this embodiment, the round hole 68 for allowing the mixed hot water to flow is formed in the portion of the shield member 64 that covers the temperature sensitive spring 34. While the large dynamic pressure is prevented from directly acting on the temperature sensing spring 34, the temperature sensing spring 34 can rapidly respond to the temperature change of the mixed hot water and generate a biasing force according to the temperature of the hot water. Thus, the temperature of the discharged hot water can be adjusted.

  Further, according to the hot and cold water mixing faucet of the present embodiment, since the shield member 64 is fixed to the hot water and water mixing device main body 21, the bias spring 32 or the feeling is not affected without adversely affecting the movement of the main valve body 30. It is possible to prevent a large dynamic pressure from acting on the warm spring 34.

  Furthermore, according to the hot and cold water mixing faucet of the present embodiment, since the shield member 64 has the outer peripheral surrounding wall 67 that covers the leg portion 30a of the main valve body 30, the main pressure of the dynamic pressure acting on the main valve body 30 is increased. The direction component that moves the valve body 30 in the sliding direction is reduced, and the dynamic pressure acting on the main valve body 30 can be prevented from adversely affecting the temperature control performance.

  Further, according to the hot and cold water mixing faucet of the present embodiment, the inflowing hot water and water mainly flow through the annular space between the hot water and water mixing device main body 21 and the shield member 64, so that the flow path resistance is further reduced, The discharge flow rate from the hot water mixing apparatus 20 can be increased.

  In the above-described embodiment, the movable column 38 and the movable sleeve 40 are moved by the biasing force of the bias spring 32 and the temperature sensitive spring 34, and the main valve body 30 is moved along with these movements. Alternatively, the bias spring 32 and / or the temperature sensitive spring 34 may be configured to directly press the leg 30b of the main valve body 30.

  Next, with reference to FIG. 6 thru | or FIG. 8, the hot / cold water mixing faucet by 2nd Embodiment of this invention is demonstrated. The hot and cold water mixing faucet of the present embodiment is different from the first embodiment in the mechanism for moving the main valve body of the hot and cold water mixing device incorporated therein. Accordingly, here, only the points of the second embodiment of the present invention that are different from the first embodiment will be described, and the same components will be denoted by the same reference numerals and the description thereof will be omitted.

  FIG. 6 is a cross-sectional view of the hot and cold water mixing device 120 built in the hot and cold water mixing faucet according to this embodiment, and FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. FIG. 8 is an exploded perspective view of the hot water / water mixing device 120.

  As shown in FIGS. 6 and 7, the hot and cold mixing device 120 includes a first main body member 122, a second main body member 124, a feed screw 126, and a sliding member 128. The hot and cold water mixing device 120 includes a main valve body 130 that is movably disposed inside the first main body member 122, a bias spring 132 that is a biasing means that biases the main valve body 130, and a bias spring 132. Has a temperature sensitive spring 134 which is a temperature sensitive urging means for urging the main valve body 130 in the opposite direction. In the present embodiment, a coil spring made of a shape memory alloy is used as the temperature sensitive spring 134.

  As shown in FIGS. 6 to 8, the first main body member 122 constitutes the hot and cold mixing apparatus main body 121 by fitting the second main body member 124 therein. Moreover, the 1st main body member 122 is provided with the hot water inlet 122a for making hot water flow in, and the water inlet 122b for making water flow in the circumferential direction, respectively. Moreover, one end surface of the hot water inlet 122a is formed as a hot water side sheet surface 122c.

The second main body member 124 has a substantially cylindrical shape, and a column 124a extending in the axial direction from one end portion toward the other open end portion is formed at the center thereof. The second main body member 124 is attached to the first main body member 122 by fitting the opened end portion into the end portion of the first main body member 122. Further, the open end of the second main body member 124 is formed as a water-side seat surface 124 b that comes into contact with the main valve body 130. Furthermore, a discharge port 124c through which hot water mixed in the hot water mixing apparatus main body 121 flows out is formed at the end of the second main body member 124 opposite to the water side sheet surface 124b.
The feed screw 126 is rotatably disposed inside the first main body member 122, and a spline portion 126a and a feed male screw portion 126b are formed.

  The sliding member 128 has a substantially cylindrical shape, and is slidably disposed inside the first main body member 122, and an axial groove 128a (FIG. 8) is formed on the outside thereof. The groove 128 a receives a protrusion (not shown) formed on the first body member 122. Furthermore, a feed female screw portion 128 b is formed inside the sliding member 128, and when the feed screw 126 is rotated, the sliding member 128 is slid in the axial direction of the first main body member 122.

Next, a mechanism for moving the main valve body 130 in accordance with the temperature of the hot water mixed in the hot water mixing apparatus main body 121 will be described.
As shown in FIGS. 6 and 7, the main valve body 130 is a substantially cylindrical member, and the both ends of the main valve body 130 are in contact with the hot water side seat surface 122c or the water side seat surface 124b by sliding in the axial direction. A contacting sheet portion is formed. Further, on the left side of the main valve body 130, a movable support column 138, a bias spring 132, and a spring retainer 136 are arranged. An enlarged diameter portion 138a is formed at the end of the movable support column 138 on the main valve body 130 side. Further, a C clamp 136a is attached to the end of the movable support 138 opposite to the main valve body 130, and the spring retainer 136 is positioned. The bias spring 132 is disposed around the movable support column 138 in a state of being sandwiched between the enlarged diameter portion 138 a of the movable support column 138 and the spring pressing metal 136.

  Further, as shown in FIGS. 6 and 7, on the right side of the main valve body 130, there are a movable sleeve 140 that is a biasing force balance member and a temperature-sensitive spring 134 so as to surround the column 124 a of the second main body member 124. Is arranged. The movable sleeve 140 is a substantially cylindrical member, and is slidably disposed around the support column 124a. Further, the temperature-sensitive spring 134 is disposed so as to surround the support post 124 a, the left end portion in FIG. 6 abuts on the movable sleeve 140, and the right end portion is on the end portion of the inner wall surface of the second main body member 124. It arrange | positions so that it may contact | abut.

  Further, on the inner side of the main valve body 130, three rotating arms 160 that connect the front end of the column 124a of the second main body member 124 and the main valve body 130 are disposed. The three rotating arms 160 are arranged to extend in the radial direction at intervals of 120 ° from the central axis of the support column 124a, and a substantially cylindrical column 160a is formed at the base end. ing. As shown in FIG. 6, the cylindrical portion 160a is rotatably received between a recess 124d formed at the tip of the column 124a and the head of the pin 162 inserted at the tip of the column 124a. With this configuration, the turning arm 160 can turn around its proximal end. On the other hand, a concave portion 160 b is formed at the tip of the rotating arm 160, and the concave portion 160 b receives a cylindrical protrusion 130 a formed on the inner wall surface of the main valve body 130. With this configuration, when the pivot arm 160 is pivoted about the cylindrical portion 160a, the main valve body 130 is moved in the left-right direction in FIGS.

  Further, as shown in FIG. 6, a movable support column 138 and a movable sleeve 140 are in contact with intermediate portions on both side surfaces of the rotating arm 160. When the sliding member 128 is moved in the right direction in FIGS. 6 and 7 and the sliding member 128 comes into contact with the spring retainer 136, the diameter-enlarged portion 138a of the movable column 138 is biased by the bias spring 132. Thus, it is urged to the right. On the other hand, in this state, the movable sleeve 140 is urged leftward in FIGS. 6 and 7 by the urging force of the temperature-sensitive spring 134. Therefore, the intermediate portion of the rotating arm 160 sandwiched between the movable column 138 and the movable sleeve 140 receives urging forces in opposite directions from the enlarged diameter portion 138 a of the movable column 138 and the distal end of the movable sleeve 140. It will be.

  When the hot and cold mixing device 120 is used, the movable support 138 and the movable sleeve 140 are moved to a position where the biasing force of the bias spring 132 and the biasing force of the temperature-sensitive spring 134 are balanced. As the movable support 138 and the movable sleeve 140 are moved, the rotating arms 160 sandwiched between them are rotated. When the turning arm 160 is turned, the main valve body 130 engaged with the tip of the turning arm 160 is moved in the axial direction. In this embodiment, the distance from the rotation center of the rotation arm 160 to the point where the main valve body 130 and the rotation arm 160 are engaged is from the rotation center of the rotation arm 160 to the rotation arm 160 and the movable sleeve. It is about twice the distance to the point where 140 abuts. Therefore, the main valve body 130 is moved by a distance approximately twice the distance that the movable sleeve 140 that is the biasing force balancing member is moved by the biasing force of the bias spring 132 and the temperature sensitive spring 134.

  That is, the rotating arm 160 functions as a link mechanism that amplifies the moving distance of the movable support column 138 and the movable sleeve 140 and moves the main valve body. In the present embodiment, the rotating arm 160 transmits the movement of the movable support column 138 and the movable sleeve 140 to the main valve body, and the main valve body is moved by a distance longer than the movement distance of the movable support column 138 and the movable sleeve 140. It functions as a movement amount amplification means.

  On the other hand, as shown in FIGS. 6 and 7, a rubber O-ring 142 that is a hot water separator is disposed on the outer periphery of the main valve body 130. Next to the O-ring 142, a legged spacer ring 146 that is a position restricting member is disposed. Further, on the opposite side of the legged spacer ring 146, a step 122d provided on the inner wall of the first body member 122 is formed. Accordingly, the position of the O-ring 142 is regulated by the step 122 d on the inner wall of the first main body member 122 and the spacer ring 146 with legs, and is positioned at a predetermined position in the first main body member 122.

  On the other hand, a spring fitting 148 is disposed on the end surface of the first main body member 122. In order to press the spring fitting 148 against the proximal end portion of the spline portion 126a, the O-ring 150 is attached to the proximal end of the spline portion 126a. It is arranged around. The spring metal fitting 148 has two leaf spring portions 148a and engaging portions 148b formed at the tips thereof.

Further, as shown in FIG. 8, radial spline portions 122 e provided on the outer peripheral portion are formed on the end surface of the first main body member 122. When the engaging portion 148b of the spring metal fitting 148 gets over the mountain of the spline portion 122e, a click feeling is given to the rotation of the feed screw 126.
In addition, cylindrical filters 152 and 154 are arranged outside the first main body member 122 so as to cover the hot water inlet 122a and the water inlet 122b, respectively.

  Further, as shown in FIGS. 6 and 7, a cylindrical shield member 164 is disposed inside the hot water / water mixing device main body 121 so as to surround the bias spring 132, the temperature sensitive spring 134, and the like. The shield member 164 is disposed concentrically with respect to the inner wall surface of the main valve body 130 and the hot water mixing apparatus main body 121 so as to penetrate the cylindrical main valve body 130.

  The shield member 164 is assembled from a shield member main body 164a and a shield member cap 164b (FIG. 8). Further, as shown in FIG. 6, three oval holes 166 for passing the rotating arm 160 are formed on the side surface of the shield member 164 (only one is shown in FIG. 6). Around the oval hole 166, an outer peripheral surrounding wall 167 that is a leg surrounding portion that covers the periphery of the rotating arm 160 is formed. Furthermore, nine round holes, which are inflow holes for allowing the hot water mixed in the hot water mixing apparatus main body 121 to flow into the shield member 164, are provided on the side surface of the shield member 164 covering the temperature sensitive spring 134. 168 is formed (only three are shown in FIG. 6).

  Further, three spacer protrusions 170 are formed on the side surface of the shield member 164 (only one is shown in FIG. 6). Further, a spacer ring 171 is formed on the outer periphery of the end of the shield member 164. The spacer protrusions 170 and the spacer ring 171 are in contact with the inner wall surface of the hot and cold water mixing apparatus main body 121, so that the shield member 164 is positioned almost at the center in the hot and cold water mixing apparatus main body 121. Further, a flange portion 172 (FIG. 6) extending inward in the radial direction is formed at one end portion of the shield member 164. As shown in FIGS. 6 and 7, the flange portion 172 is sandwiched between the temperature-sensitive spring 134 and the end of the second main body member 124, and the position of the shield member 164 with respect to the hot water mixing apparatus main body 121 is set. It is fixed.

Next, with reference to FIG. 6 thru | or FIG. 8, the effect | action of the hot and cold water mixing faucet by embodiment of this invention is demonstrated.
First, the user of the hot and cold water mixing faucet sets the hot water temperature adjusting dial 8 to a desired temperature. Here, when the hot water temperature adjusting dial 8 is set to the minimum temperature, the hot water side seat portion of the main valve body 130 is brought into contact with the hot water side seat surface 122c by the urging force of the temperature sensing spring 134, and hot water is supplied. Only water is allowed to flow into the mixing apparatus main body 121.

  Next, when the set temperature is raised by operating the hot water temperature adjusting dial 8, the sliding member 128 comes into contact with the spring retainer 136. Thereby, the movable sleeve 140 and the movable support column 138 are moved to a position where the biasing force of the bias spring 132 and the biasing force of the temperature-sensitive spring 134 are balanced. By this movement, the intermediate portion of the rotation arm 160 is pressed by the movable sleeve 140 or the movable support column 138, and the rotation arm 160 is rotated around the column portion 160a. When the turning arm 160 is turned, the main valve body 130 engaged with the tip of the turning arm 160 is also moved together with the turning arm 160. At this time, the moving distance of the main valve body 130 is approximately twice the moving distance of the movable sleeve 140 and the movable support column 138.

  When the user operates the water discharge switch 10, water discharge from the currant or shower is started. When water discharge is started, the hot water introduced from the hot water supply leg 4 flows into the hot water inlet 122a via the filter 152, and the water introduced from the water supply leg 6 passes through the filter 154. It flows into 122b. Hot water that flows in from the hot water inlet 122a passes between the hot water side sheet portion of the main valve body 130 and the hot water side sheet surface 122c and flows into the hot water mixing apparatus main body 121, and the water that flows in from the water inlet 122b is mainly used. It flows between the water-side seat portion of the valve body 130 and the water-side seat surface 124 b and flows into the hot water mixing apparatus main body 121.

  The hot water that has flowed into the hot water mixing apparatus main body 121 flows in the right direction in FIGS. 6 and 7 through the inside of the main valve body 130. Further, the water flowing into the hot water mixing apparatus main body 121 is mixed with the hot water flowing through the main valve body 130 and flows out from the discharge port 124c. At this time, the mixed hot water and water are made to have a substantially uniform temperature and flow around and inside the temperature-sensitive spring 134. The hot water flowing out from the discharge port 124c is discharged from the currant 12 or the shower head 14 through the switching valve 16 (FIG. 1).

  When the temperature of the hot water flowing around and inside the temperature-sensitive spring 134 is higher than the set temperature, the temperature-sensitive spring 134 acts to extend, so that the urging force by the temperature-sensitive spring 134 increases. Accordingly, the movable sleeve 140 is moved to the left side in FIGS. 6 and 7, and the biasing force by the temperature-sensitive spring 134 and the biasing force by the bias spring 132 are balanced at that position. As the movable sleeve 140 is moved, each of the rotating arms 160 is rotated, whereby the main valve body 130 is also moved leftward. As described above, the moving distance of the main valve body 130 at this time is approximately twice the moving distance of the movable sleeve 140. By moving the main valve body 130 to the left, the distance between the hot water side seat portion and the hot water side seat surface 122c is shortened, and the distance between the water side seat portion and the water side seat surface 124b is long. Therefore, the ratio of the water flowing into the hot water mixing apparatus main body 121 increases, and the temperature of the discharged hot water decreases.

  On the contrary, when the temperature of the hot water flowing around and inside the temperature-sensitive spring 134 is lower than the set temperature, the urging force by the temperature-sensitive spring 134 decreases and the movable sleeve 140 moves in the right direction in FIGS. As a result, the main valve element 130 is also moved in the right direction, and the temperature of the discharged hot water rises. By these actions, the temperature of hot water discharged from the currant 12 or the shower head 14 is adjusted to the set temperature.

  Moreover, since the hot water and water flowing into the hot-water mixing apparatus main body 121 pass through a narrow gap between each sheet portion and the sheet surface, the flow velocity is increased. The shield member 164 disposed in the hot water mixing apparatus main body 121 is disposed so as to surround the bias spring 132, the movable support 138, the movable sleeve 140, the temperature sensitive spring 134, the rotating arm 160, etc. Hot water and water flowing into the hot water mixing apparatus main body 121 are prevented from directly colliding with these components. As a result, the dynamic pressure of the hot water and water flowing in acts on the bias spring 132, the temperature sensitive spring 134, etc., and the main valve body 130 is moved by a force other than the urging force of these springs. It is prevented that the function is adversely affected. Further, the mixed hot water and water mainly flow into the shield member 164 through the round hole 168 and contact the temperature-sensitive spring 134. Thereby, the temperature-sensitive spring 134 generates an urging force according to the temperature of the mixed hot water and water.

  According to the hot and cold water mixing faucet of the second embodiment of the present invention, the main valve body 130 is moved by the rotary arm 160 by a distance that is approximately twice the distance that the movable sleeve 140 and the movable column 138 have moved. The distance main valve body 130 can be moved approximately twice as long as the main valve body 130 is directly moved by expansion and contraction of the bias spring 132 and the temperature sensitive spring 134. Therefore, when the stroke of the main valve body 130 is made comparable to that of the conventional hot water mixing apparatus, the moving distance of the balance position of the bias spring 132 and the temperature sensitive spring 134 can be reduced to about ½. Thereby, the expansion and contraction amount of the bias spring 132 and the temperature sensitive spring 134 can be reduced to about ½ while ensuring a sufficient flow path area for flowing hot water and water into the hot water mixing apparatus main body 121, thereby mixing hot water and water. The temperature control performance of the apparatus can be improved.

  Further, according to the hot and cold water mixing faucet of the present embodiment, the shield member 164 has the water flowing into the hot water and water mixing device main body 121 into the bias spring 132, the temperature sensitive spring 134, the movable sleeve 140, or the rotating arm 160, and Since the dynamic pressure of hot water is prevented from acting directly, the temperature adjustment function of the hot water / water mixing device 120 can be prevented from being adversely affected by the dynamic pressure.

  In the above-described embodiment, the urging force of the bias spring 132 and the temperature sensitive spring 134 moves the movable support column 138 and the movable sleeve 140 that function as the urging force balancing member, and the rotating arm 160 is pressed through these members. However, as a modified example, the bias spring 132 and / or the temperature-sensitive spring 134 may be configured to directly press the rotating arm 160. In the case of such a configuration, the bias spring 132 or the temperature sensitive spring 134 also functions as an urging force balancing member.

  As mentioned above, although preferable embodiment of this invention was described, a various change can be added to embodiment mentioned above. In particular, in the above-described embodiment, a temperature-sensitive spring made of a shape memory alloy is used as the temperature-sensitive biasing means. However, a wax element or the like using a volume change when the enclosed wax is liquefied by heat is used. Also, it can be used as a temperature sensitive urging means.

It is a perspective view which shows the whole tap water mixing tap by 1st Embodiment of this invention. It is sectional drawing of the hot and cold water mixing apparatus incorporated in the hot and cold water mixing faucet by 1st Embodiment of this invention. It is sectional drawing which follows the III-III line in FIG. It is a disassembled perspective view of the hot and cold water mixing apparatus built in the hot and cold water mixing faucet according to the first embodiment of the present invention. It is the perspective view of the state which decomposed | disassembled the shield member incorporated in the hot water mixing apparatus, and (b) the perspective view of the assembled state. It is sectional drawing of the hot and cold water mixing apparatus incorporated in the hot and cold water mixing faucet by 2nd Embodiment of this invention. It is sectional drawing which follows the VII-VII line in FIG. It is a disassembled perspective view of the hot water mixing device incorporated in the hot water mixing faucet by 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water mixing faucet 2 Water faucet main body 4 Hot water supply leg 6 Water supply leg 8 Hot water temperature adjustment dial 10 Stop water switching handle 12 Curran 14 Shower head 16 Switching valve 20 Hot water mixing apparatus 21 Hot water mixing apparatus main body 22 1st main body Member 22a Hot water inlet 22b Water inlet 22c Hot water side sheet surface 22d Step 22e Spline portion 24 Second body member 24a Post 24b Water side sheet surface 24c Discharge port 24d Bore 26 Feed screw 26a Spline portion 26b Feed male screw portion 28 Sliding Member 28a Groove 28b Feed female thread part 30 Main valve body 30a Boss part 30b Leg part 30c Guide shaft 32 Bias spring 34 Temperature-sensitive spring 36 Spring clamp 36a C clamp 38 Movable strut 38a Diameter expansion part 40 Movable sleeve 42 O-ring 46 With leg Spacer ring 48 Spring bracket 48 Leaf spring part 48b Engagement part 50 O-ring 52 Filter 54 Filter 64 Shield member 64a Shield member body 64b Shield member cap 66 Oval hole 67 Outer peripheral wall 68 Round hole 70 Spacer projection 71 Spacer ring 72 Flange part 120 Hot water / water mixing device 121 Hot water mixing apparatus main body 122 First main body member 122a Hot water introduction port 122b Water introduction port 122c Hot water side sheet surface 122d Stepped portion 122e Spline portion 124 Second main body member 124a Post 124b Water side sheet surface 124c Discharge port 124d Recessed portion 126 Feed screw 126a Spline Portion 126b feed male screw portion 128 sliding member 128a groove 128b feed female screw portion 130 main valve body 130a protrusion 132 bias spring 134 temperature-sensitive spring 136 spring retainer metal 136a C clamp 138 Movable strut 138a Expanded diameter portion 140 Movable sleeve 142 O-ring 146 Spacer ring with legs 148 Spring metal fittings 148a Leaf spring portion 148b Engagement portion 150 O-ring 152 Filter 154 Filter 160 Rotating arm 160a Column portion 160b Recess 162 Pin 164 Shield member 164a Shield member body 164b Shield member cap 166 Oval hole 167 Outer wall 168 Round hole 170 Spacer projection 171 Spacer ring 172 Flange

Claims (6)

A hot and cold water mixing device that mixes supplied hot water and water and discharges hot water adjusted to an appropriate temperature,
A hot water mixing device body,
A main valve body that is movably disposed in the hot water mixing apparatus main body and is moved to change the flow rate of hot water and water flowing into the hot water mixing apparatus main body,
An urging means for generating an urging force arranged in the hot water / mixing device main body so that the main valve body is slid in a predetermined direction;
An urging force in a direction opposite to that of the urging means is generated so that the main valve element is slid and arranged in the hot water mixing apparatus main body, and flows into the hot water mixing apparatus main body to be mixed. Temperature-sensitive biasing means whose biasing force changes according to the temperature of the hot water;
The hot and cold water mixing device body, arranged to surround at least a portion of the biasing means or the urging temperature sensitive biasing means, dynamic pressure of the water and hot water flowing into the hot and cold water mixing apparatus main body, urging the Or a shield member that suppresses direct action on the temperature-sensing biasing means,
The hot water and water mixed into the hot water mixing device main body are discharged from the hot water mixing device main body through the space between the inner wall surface of the hot water mixing device main body and the outside of the shield member. A hot and cold water mixing device.   The hot and cold water mixing apparatus according to claim 1, wherein the shield member is formed with an inflow hole for allowing the mixed hot water to flow into a portion covering the temperature sensitive biasing means.   The hot and cold water mixing apparatus according to claim 1 or 2, wherein the shield member is fixed to the hot water and water mixing apparatus main body.   The main valve body and the shield member are generally cylindrical, and the shield member is disposed concentrically with respect to the main valve body on the inner side of the main valve body, The leg part which penetrates the said shield member from a wall surface, and is extended inward, The said shield member has a leg part surrounding part which covers at least one part of the circumference | surroundings of the said leg part. The hot water mixing apparatus as described.   The inside of the hot water mixing apparatus main body is formed in a substantially cylindrical shape, the urging means and the temperature sensitive urging means are disposed substantially on the central axis in the hot water mixing apparatus main body, and the shield member is The hot and cold water mixing apparatus according to any one of claims 1 to 4, wherein the outer sides of the urging means and the temperature-sensitive urging means are substantially concentrically covered. The hot and cold water mixing device according to any one of claims 1 to 5,
A faucet body for storing the hot water mixing device,
An on-off valve that switches between a water discharge state and a water stop state of the hot water mixed by the hot water mixing device,
A discharge section for discharging mixed hot water;
A hot and cold water mixing faucet characterized by comprising:

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