JP7202875B2 - shower device - Google Patents

Description

The present invention relates to a shower device. More specifically, the present invention relates to a shower device that prevents a user from being exposed to cold water accumulated in the pipes of the device at the initial stage of use of the shower device.

2. Description of the Related Art Conventionally, shower apparatuses are known that have a function of draining water from the inside of the pipes in order to prevent users from being showered with cold water that has accumulated in the pipes of the apparatus at the beginning of use. The shower device disclosed in Patent Document 1 is arranged at an appropriate position in a shower channel that connects a hot and cold water mixing faucet and a shower head, has a cylinder having two inflow ports and two outflow ports, and is slidable in the cylinder. and a sprue valve fitted within. Furthermore, this shower device has a return spring body and a temperature-sensitive operation tool for slidingly operating the sprue valve within the cylinder. Depending on the temperature of the shower water guided to the upstream side of the shower channel, the return spring body and the temperature-sensitive operating device change the position of the sprue valve in the cylinder to switch the connection between the inflow port and the outflow port. When the cold shower water is led to the upstream side of the shower channel, the sprue valve is in a position pressed by the return spring body, and the cold water remaining downstream of the shower channel is discharged together with the cold shower water. It is discharged outside. When the hot shower water is led to the upstream side of the shower water channel, the sprue valve is pushed by the temperature-sensitive operation device against the urging force of the return spring body and moves to the position where the hot shower water is directed. led to the shower head. As a result, this shower device can automatically drain the cold water accumulated downstream of the shower water channel at the beginning of use.

JP-A-3-18332

In the prior art described above, the cold water accumulated downstream of the shower water channel can be automatically drained in order to prevent cold water from being unexpectedly discharged from the shower head at the beginning of use of the shower device. However, because the connection between the inflow port and the outflow port is switched by a sprue valve that slides inside a cylinder placed at a suitable location in the shower channel, the cross-sectional area of the channel is small, making it difficult to secure the shower water flow rate. .

In view of such problems, it is an object of the present invention to provide a shower device that can automatically prevent cold water from being suddenly discharged from the shower head at the beginning of use and that ensures the flow rate of shower water. be.

A first aspect of the present invention is a shower device in which a cold water discharge mechanism is disposed in the middle of a flow path connecting a shower head fixedly installed in a bathroom and a hot and cold water mixing faucet, wherein the cold water discharge mechanism is , when hot water having a set temperature or higher is supplied through the supply channel from the hot and cold water mixing faucet, the hot water flows through the first channel, and cold water having a temperature lower than the set temperature is supplied. a first valve mechanism for causing the cold water to flow through the first flow path and the second flow path; the hot water is flowed from the first flow path to the discharge flow path to the shower head, and the flow of water between the discharge flow path and the first flow path is stopped when the cold water is flowed. a valve mechanism arranged downstream of the second flow path for flowing the cold water from the second flow path to a discharge flow path to the outside of the cold water discharge mechanism when the cold water is supplied, and the discharge flow path; a third valve mechanism for flowing the water stagnant inside the discharge channel to the discharge channel and stopping the flow of water from the discharge channel to the discharge channel when the cold water is not supplied; The valve bodies are characterized in that they are formed so as to be able to open and close the entire cross section of any one of the flow paths.

According to the first invention, when cold water is supplied from the hot and cold water mixing faucet to the cold water discharge mechanism, the cold water flows through the second flow path to the discharge flow path, and the water accumulated in the discharge flow path is discharged. It can flow into the discharge channel. This automatically prevents cold water from being unexpectedly discharged from the shower head at the beginning of use. In addition, since the valve element of each valve mechanism is formed so as to be able to open and close the entire cross section of one of the flow paths, the cross section of each flow path can be secured to allow water to flow. can.

A second aspect of the present invention is characterized in that, in the first aspect, the valve bodies of the respective valve mechanisms are arranged such that their moving directions are parallel to each other.

According to the second invention, it becomes easy to attach each valve mechanism to each flow path.

According to a third aspect of the present invention, in the second aspect, the movement direction of the valve element of each valve mechanism is the vertical direction, the supply flow path is connected to the cold water discharge mechanism from below, and the discharge flow The channel is characterized in that it is connected to the cold water discharge mechanism from above.

According to the third aspect of the invention, since the supply channel is connected to the cold water discharge mechanism from below and the discharge channel is connected to the cold water discharge mechanism from above, when cold water is supplied to the cold water discharge mechanism, it accumulates in the discharge channel. It is easy to flow water to the discharge channel.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the valve body of each of the valve mechanisms is attached to an annular valve seat provided at the end of one of the flow passages. It is characterized in that it is formed so as to open and close in contact with or apart from each other.

According to the above configuration, the structures of the valve seat and the valve body can be simplified.

1 is a front view of a shower device that is an embodiment of the present invention; FIG. It is the figure which showed typically the piping path|route of the shower apparatus in the said embodiment. It is a perspective view of the cold water discharge mechanism in the said embodiment. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3; The state when hot water is supplied from the supply channel is shown. 5 is a cross-sectional view taken along line VV in FIG. 4; FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5; FIG. FIG. 4 is a sectional view corresponding to FIG. 3; The state when cold water is supplied from the supply channel is shown. FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7; FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. 8; 5 is a view corresponding to FIG. 4 of a cold water discharge mechanism in another embodiment; FIG. The state when hot water is supplied from the supply channel is shown.

A configuration of a shower device 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. FIG. In the following description, when directions such as front, back, up, down, left, and right are indicated, they refer to the respective directions shown in the respective drawings.

As shown in FIG. 1, the shower device 1 according to this embodiment is configured as a so-called wall-fixed type shower device installed on a wall surface W of a bathroom. The shower device 1 includes a hot and cold water mixing faucet 2 arranged at the lower part of the wall surface W, a shower head 3 arranged at the upper part of the wall surface W, and cold water arranged between the hot and cold water mixing faucet 2 and the shower head 3. and an ejection mechanism 10 . Further, the shower device 1 has a supply pipe 4 that connects the hot and cold water mixing faucet 2 and the cold water discharge mechanism 10 and a discharge pipe 5 that connects the shower head 3 and the cold water discharge mechanism 10 .

The hot water mixing faucet 2 has a function of mixing the hot water supplied from the hot water supply pipe 2a and the water supplied from the water supply pipe 2b in an appropriate ratio and discharging conditioned water. Specifically, by adjusting the substantially cylindrical temperature control handle 2c to a desired rotational position, the mixing ratio of hot and cold water mixed inside can be adjusted to produce regulated hot water at a desired set temperature. there is By operating the substantially cylindrical switching handle 2d, it is possible to adjust the discharge amount of the conditioned water discharged into the supply pipe 4 from a discharge port (not shown) arranged on the rear surface. The shower head 3 downwardly discharges the conditioned water supplied through the discharge pipe 5 . The upper end portion of the supply pipe 4 is connected to the cold water discharge mechanism 10 on the lower side, and the lower end portion of the discharge pipe 5 is connected to the upper side of the cold water discharge mechanism 10 . Here, the supply pipe 4 and the discharge pipe 5 respectively correspond to the "supply channel" and the "discharge channel" in the claims.

With regard to the cold water discharge mechanism 10, the outline of its function will be described with reference to FIG. 2, and then the details of its configuration and operation will be described with reference to FIGS. 3 to 9. FIG. As shown in FIG. 2, the upper end of the supply pipe 4 is connected from below to the first valve mechanism portion 11 arranged on the lower side, and the lower end of the first flow passage 21 and the second flow are connected from the side. The lower ends of the channels 22 are connected. The first valve mechanism part 11 is a temperature-sensitive type valve mechanism, and when the temperature of the water supplied from the supply pipe 4 and controlled by the hot water mixing faucet 2 is equal to or higher than the set temperature, the first valve mechanism 11 Hot water is passed through the flow path 21, and cold water is passed through the first flow path 21 and the second flow path 22 in the case of cold water below the set temperature. The lower end of the discharge pipe 5 is connected from the upper side to the second valve mechanism portion 12 arranged on the upper side, and the upper end of the first flow path 21 and the upper end of the third flow path 23 are connected from the side. . Further, the second valve mechanism 12 is connected to the upper end of a sub second flow path 221 branched from the middle of the second flow path 22 from below. The second valve mechanism portion 12 is configured to be interlockable with the first valve mechanism portion 11, and when water is not supplied to the sub-second flow path 221, the first flow path 21 and the discharge pipe 5 are connected to supply water. When water is supplied to the sub-second flow path 221, the connection between the first flow path 21 and the discharge pipe 5 is cut off to prevent the water from flowing. The discharge pipe 5 and the third flow path 23 are always connected to allow water to flow. The third valve mechanism portion 13 arranged between the first valve mechanism portion 11 and the second valve mechanism portion 12 in the vertical direction has two interlocking valve portions. The lower valve portion is the lower third valve portion 131 and the upper valve portion is the upper third valve portion 132 . The upper end of the second flow path 22 is connected to the lower third valve portion 131 from below, and the discharge flow path 24 is connected to the side thereof. The lower end of the third flow path 23 is connected to the upper third valve portion 132 from above, and the discharge flow path 24 is connected to the side thereof. When water is supplied from the second flow path 22 to the lower third valve section 131, the third valve mechanism section 13 connects the second flow path 22 and the discharge flow path 24 to allow water to flow. At this time, the upper third valve portion 132 interlocks with the lower third valve portion 131 to connect the third flow path 23 and the discharge flow path 24 to flow water. When water is not supplied to the lower third valve portion 131 from the second channel 22, the upper third valve portion 132 cuts off the connection between the third channel 23 and the discharge channel 24 to prevent water from flowing.

The cold water discharge mechanism 10 functions as follows. Hot water supplied from the hot water supply pipe 2 a and water supplied from the water supply pipe 2 b are mixed by the hot water mixing faucet 2 , and temperature-controlled water is supplied to the cold water discharge mechanism 10 through the supply pipe 4 . Here, when the temperature of the supplied water is equal to or higher than the set temperature, the first valve mechanism 11 causes hot water to flow through the first flow path 21 . At this time, hot water is not supplied to the sub-second flow path 221, so the second valve mechanism 12 connects the first flow path 21 and the discharge pipe 5 to flow hot water. As a result, hot water having a temperature equal to or higher than the set temperature reaches the shower head 3 through the supply pipe 4 , the first flow path 21 and the discharge pipe 5 and is discharged from the shower head 3 . On the other hand, when the temperature of the water supplied through the supply pipe 4 is cold water below the set temperature, the first valve mechanism section 11 causes cold water to flow through the first flow path 21 and the second flow path 22, and the third valve mechanism section A lower third valve portion 131 of 13 connects the second channel 22 and the discharge channel 24 to flow cold water. As a result, the cold water whose temperature is lower than the set temperature is discharged to the outside of the cold water discharge mechanism 10 through the supply pipe 4 , the second channel 22 and the discharge channel 24 . Further, when the lower third valve portion 131 connects the second flow path 22 and the discharge flow path 24, the upper third valve portion 132 interlocks with the lower third valve portion 131 to connect the third flow path 23 and the discharge flow path. 24 are concatenated. At this time, since cold water is being supplied to the sub-second flow path 221, the second valve mechanism 12 cuts off the connection between the discharge pipe 5 and the first flow path 21 to prevent water from flowing. Cold water does not flow into the discharge pipe 5 from the . Water remaining in the discharge pipe 5 and the third channel 23 is discharged outside the cold water discharge mechanism 10 through the discharge channel 24 by gravity. That is, when the temperature of the water supplied through the supply pipe 4 is lower than the set temperature, water remaining in the discharge pipe 5 and the third flow passage 23 passes through the discharge flow passage 24 together with the supplied cold water. is discharged to the outside of the cold water discharge mechanism 10. As a result, it is possible to automatically prevent cold water below the set temperature from suddenly being discharged from the shower head at the beginning of use of the shower device 1 .

As shown in FIGS. 3 to 9, the cold water discharge mechanism 10 includes a first valve mechanism portion 11, a second valve mechanism portion 12, a third valve mechanism portion 13, and a substantially rectangular parallelepiped case C. A first pipe portion 31 and a second pipe portion 32 are arranged and formed.

As shown in FIGS. 4 and 5, the first valve mechanism portion 11 includes a main body portion 11a formed as a substantially cylindrical member having a columnar inner cylindrical portion 11a1 extending in the vertical direction, and an inner cylindrical portion 11a1. and a valve body portion 11b disposed therein so as to be slidable in the vertical direction. The main body portion 11a is provided with a branch portion 11a2 extending rightward from the center portion in the vertical direction of the inner cylindrical portion 11a1. Further, a supply pipe attachment portion 11a3 exposed to the outside of the case C is provided on the lower end portion side of the main body portion 11a. Further, an annular convex portion 11a4 that protrudes radially inward is provided on the upper portion of the supply pipe mounting portion 11a3 in the inner cylinder portion 11a1 of the main body portion 11a. The valve body portion 11b has a cylindrical shaft portion 11b1 extending in the vertical direction, a temperature-sensitive spring 11b2 made of a shape memory alloy, a bias spring 11b3, and a valve body 11b4. The shaft portion 11b1 is provided with an annular projecting portion 11b11 projecting radially slightly downward from the center portion in the vertical direction. A temperature-sensitive spring 11b2 is arranged between the convex portion 11a4 and the projecting portion 11b11, and a bias spring 11b3 is arranged between the lid 11c provided with a through hole for supporting the upper portion of the shaft portion 11b1 and the projecting portion 11b11. The shaft portion 11b1 is assembled to the body portion 11a. The lid 11c is pressed and fixed to the main body portion 11a by the second pipe portion 32 when the second pipe portion 32 is attached to the main body portion 11a. In this state, a disk-shaped valve element 11b4 made of hard rubber is attached to the shaft portion 11b1 protruding upward from the lid 11c. When the valve body 11b4 comes into contact with an annular valve seat 32b provided on the lower end side of the second pipe portion 32, the connection between the inner tubular portion 11a1 and the inner tubular portion 32a of the second pipe portion 32 is cut off. to close the valve. The temperature sensing spring 11b2 expands in the vertical direction when the temperature of the water entering the inner cylindrical portion 11a1 increases, and contracts in the vertical direction when the temperature decreases. The valve body 11b4 contacts the valve seat 32b to close the valve when the temperature of the water entering the inner cylindrical portion 11a1 is hot or cold water equal to or higher than the set temperature, and the valve is opened when cold water is lower than the set temperature. ing. The temperature-sensitive spring 11b2 and the bias spring 11b3 are set so as to always work in the compression direction. Here, the first valve mechanism portion 11 and the valve seat 32b correspond to the "first valve mechanism" in the claims.

As shown in FIGS. 4 and 5, the second valve mechanism portion 12 includes a main body portion 12a formed as a substantially cylindrical member having a columnar inner cylindrical portion 12a1 extending in the vertical direction, and an inner cylindrical portion 12a1. and a valve body 12b arranged so as to be vertically movable with respect to the lower end. The lower side of the inner cylindrical portion 12a1 has a double structure, and an outer inner cylindrical portion 12a4 that forms a cylindrical gap 12a3 between itself and the outer cylindrical portion of the cylindrical partition wall portion 12a2 that constitutes the inner cylindrical portion 12a1 is provided. It is A valve seat 12a21 protruding in an annular shape is provided at the lower end of the cylindrical partition 12a2. A branched portion 12a5 extending rightward is provided on the upper end portion side of the outer inner tubular portion 12a4, and a branched portion 12a6 extending rearward is provided slightly above the center portion in the vertical direction of the inner tubular portion 12a1. It is The inner diameter of the inner cylindrical portion 12a1 is formed to be the same as the inner diameter of the branch portion 12a5 and the inner diameter of the branch portion 12a6. A discharge pipe mounting portion 12a7 exposed to the outside of the case C is provided on the upper end portion side of the main body portion 12a. The valve body 12b is of a diaphragm type and has a diaphragm membrane 12b1, a base 12b2 that reinforces the diaphragm membrane 12b1, and a biasing spring 12b3 that biases the base 12b2 upward. The diaphragm film 12b1 is arranged so as to be vertically slidable with respect to the outer inner tubular portion 12a4 with the base 12b2 attached from below. The diaphragm membrane 12b1 and the base 12b2 are arranged between the upper surface of the second piping section 32 and the lower surface of the base 12b2 in a state where the second piping section 32 is attached to the second valve mechanism section 12 from below. It is urged upward by the arranged urging spring 12b3. In a state in which downward water pressure is not applied to the upper surface of the diaphragm membrane 12b1, the upper surface is pressed against the valve seat 12a21 of the cylindrical partition wall 12a2, and the connection between the inner cylindrical portion 12a1 and the gap 12a3 is cut off. is closed. Here, the second valve mechanism portion 12 corresponds to the "second valve mechanism" in the claims.

As shown in FIGS. 4 and 5, the first pipe portion 31 is formed by connecting a lower elbow 31a and an upper elbow 31b with a connecting pipe 31c. The lower elbow 31a is connected to the first valve mechanism portion 11 so that the inner cylinder portion 31a1 is aligned with the branch portion 11a2, and the upper elbow 31b is connected to the second valve mechanism portion 11 so that the inner cylinder portion 31b1 is aligned with the branch portion 12a5. It is connected to section 12 . The inner cylindrical portion 31a1, the branch portion 11a2, the inner cylindrical portion 31b1, and the branch portion 12a5 have the same inner diameter and are formed to have an inner diameter smaller than that of the inner cylindrical portion 31c1 of the connecting pipe 31c. Here, the inner cylindrical portion 31a1, the inner cylindrical portion 31c1, and the inner cylindrical portion 31b1 correspond to the "first flow path" in the claims.

As shown in FIGS. 4 and 5, the second pipe portion 32 is arranged between the upper end portion of the first valve mechanism portion 11 and the lower end portion of the second valve mechanism portion 12 and extends vertically. is a substantially cylindrical member having an inner cylindrical portion 32a. The inner cylindrical portion 32a is formed by coaxially arranging a lower inner cylindrical portion 32a1 on the lower end side, a middle inner cylindrical portion 32a2 on the central portion, and an upper inner cylindrical portion 32a3 on the upper end side. The lower inner cylindrical portion 32a1 has an inner diameter that allows the valve body 11b4 to move vertically therein, and the upper inner cylindrical portion 32a3 has an inner diameter that allows the diaphragm membrane 12b1 and the base 12b2 to move vertically therein. ing. A branch portion 32a21 extending rearward is provided on the lower end portion side of the middle inner cylindrical portion 32a2. The inner diameter of the middle inner tubular portion 32a2 is the same as that of the branched portion 32a21, the branched portion 11a2, the inner tubular portion 12a1, the branched portion 12a5, and the branched portion 12a6. Therefore, the valve body 11b4 is formed so as to be able to open and close the entire cross section of the inner cylindrical portion 32a2, and the diaphragm membrane 12b1 is formed so as to be able to open and close the entire cross section of the inner cylindrical portion 12a1. Here, when the inner cylindrical portion 32a is filled with water, the diaphragm membrane 12b1 does not move downward even if the water pressure equal to or lower than the water pressure is applied to the gap 12a3, and the valve is closed. maintain. Here, the portion above the branching portion 32a21 of the inner cylindrical portion 32a is the secondary second flow path 221 in FIG.

As shown in FIGS. 5 and 6, the third valve mechanism 13 is formed by disposing a valve case 13c between a lower elbow 13a and an upper elbow 13b. The lower elbow 13a is connected to the second pipe portion 32 so that the inner cylindrical portion 13a1 coincides with the branch portion 32a21 and forms a part of the second flow path 22. As shown in FIG. The upper elbow 13b is connected to the second valve mechanism portion 12 so that the inner cylindrical portion 13b1 coincides with the branch portion 12a6 to form a third flow path 23. As shown in FIG. An annular valve seat 13a2 protruding upward is formed on the outer peripheral edge of the inner cylindrical portion 13a1 at the end of the lower elbow 13a on the valve case 13c side. The valve case 13c has a columnar shape extending in the vertical direction, and has a lower inner cylindrical portion 13c1 forming a columnar space at its lower portion and an upper inner cylindrical portion 13c2 forming a columnar space at its upper portion. It is The lower inner cylindrical portion 13c1 and the upper inner cylindrical portion 13c2 are coaxial spaces having the same diameter, and a partition wall portion 13c3 is provided between them. A cylindrical partition wall portion 13c11 extending vertically and coaxially with the lower inner cylinder portion 13c1 is arranged radially inside the lower inner cylinder portion 13c1. 13c12 is formed. The upper end of the cylindrical partition 13c11 is connected to the lower surface of the partition 13c3. A branch portion 13c13 extending rightward is provided on the upper portion of the lower inner cylindrical portion 13c1. The partition wall portion 13c3 has a lower inner cylindrical portion 13c31 coaxial with and having the same diameter as the inner cylindrical portion 13c12 on the lower side, and a lower inner cylindrical portion 13c31 coaxial with the lower inner cylindrical portion 13c31 and having a larger diameter than the lower inner cylindrical portion 13c31. An upper inner cylindrical portion 13c32 is formed. The upper inner tubular portion 13c32 is provided with a branch portion 13c321 extending rightward. The lower inner cylindrical portion 13c31 and the inner inner cylindrical portion 13c12 are portions that support a shaft portion 13d1 of the valve body portion 13d, which will be described later, so as to be slidable in the vertical direction. is connected to the branch portion 13c321. The upper inner cylindrical portion 13c32 also serves to avoid interference with the large diameter portion 13d2, which is a part of the shaft portion 13d1, when the valve body portion 13d moves up and down. An annular valve seat 13c33 protruding upward is provided on the outer peripheral edge of the upper inner tubular portion 13c32 on the upper surface of the partition wall portion 13c3. The valve body portion 13d includes a vertically extending cylindrical shaft portion 13d1, a hard rubber disk-shaped valve body 13d3 attached to the lower end side of the shaft portion 13d1, and an upper end portion side of the shaft portion 13d1. and a disc-shaped valve body 13d4 made of hard rubber. A portion of the shaft portion 13d1 in contact with the valve body 13d4 is formed as a large-diameter portion 13d2 that expands in the radial direction. The shaft portion 13d1 of the valve body portion 13d is inserted into the lower inner cylindrical portion 13c31 and the inner inner cylindrical portion 13c12 of the valve case 13c so that the valve body portion 13d is slidable in the vertical direction. An urging spring 13e is arranged between the top surface of and urges downward. Therefore, when water is not supplied to the inner cylindrical portion 13a1, the valve body 13d3 is in contact with the valve seat 13a2 and closed, and the valve body 13d4 is in contact with the valve seat 13c33 and closed. Here, the valve case 13c, the valve body portion 13d, and the valve seat 13a2 correspond to the "third valve mechanism" in the claims. In addition, the inner tubular portion 32a, the branch portion 32a21, and the inner tubular portion 13a1 correspond to the "second flow path" in the claims. Furthermore, the inner cylindrical portion 13b1 corresponds to the "third flow path" in the claims. 2, the valve body 13d3 and the valve seat 13a2 correspond to the lower third valve portion 131, and the valve body 13d4 and the valve seat 13c33 correspond to the upper third valve portion 132. As shown in FIG.

As shown in FIG. 6, a drain pipe 33 for discharging water to the outside of the cold water discharge mechanism 10 is attached to the right side of the third valve mechanism portion 13 . The drain pipe 33 has a first inner tubular portion 33a that extends in an inverted L shape when viewed from the front, and a second inner tubular portion 33b that extends in an inverted L shape when viewed from the front. The upper end side of the first inner cylindrical portion 33a is connected to the branch portion 13c13 of the third valve mechanism portion 13, and the upper end side of the second inner cylindrical portion 33b is connected to the branch portion 13c321 of the third valve mechanism portion 13. It is The lower end sides of the first inner cylindrical portion 33a and the second inner cylindrical portion 33b are arranged near the floor surface of a bathroom (not shown). Here, the first inner cylindrical portion 33a and the second inner cylindrical portion 33b respectively correspond to the "discharge channel" in the claims.

The operation of the cold water discharge mechanism 10 will be described with reference to FIGS. 2 and 4 to 9. FIG. 4 to 6 show the state of the cold water discharge mechanism 10 when the cold water discharge mechanism 10 is supplied with hot water having a temperature equal to or higher than the set temperature from the supply pipe 4. FIG. 7 to 9 show the state of the cold water discharge mechanism 10 when cold water is supplied from the supply pipe 4 to the cold water discharge mechanism 10 at a temperature lower than the set temperature. The set temperature can be freely selected within a temperature range in which the user of the shower device 1 does not feel uncomfortable when bathing, but it can be set to 35° C., for example.

As shown in FIGS. 2 and 4 to 6, hot water, which is water of a temperature equal to or higher than the preset temperature mixed by the hot water mixing faucet 2, flows through the supply pipe 4 to the supply pipe mounting portion 11a3 of the first valve mechanism portion 11. Then, the temperature-sensitive spring 11b2 is immersed in hot water when it is led to the inner cylindrical portion 11a1. The temperature-sensing spring 11b2 expands and presses the projecting portion 11b11 upward against the biasing force of the bias spring 11b3. close. As a result, hot water is stopped from flowing to the inner cylinder portion 32a, and flows through the branch portion 11a2, the inner cylinder portion 31a1, the inner cylinder portion 31c1, the inner cylinder portion 31b1, and the branch portion 12a5 into the gap 12a3. The hot water filling the space 12a3 presses the diaphragm membrane 12b1 and the base 12b2 downward against the biasing force of the biasing spring 12b3, separating the diaphragm membrane 12b1 from the valve seat 12a21 to open the valve. As a result, hot water flows from the inner cylindrical portion 12a1 to the discharge pipe 5 attached to the discharge pipe mounting portion 12a7, reaches the shower head 3, and is discharged from the shower head 3. As shown in FIG. At this time, since hot water does not flow into the inner cylindrical portion 32a, it does not flow into the branch portion 32a21 and the inner cylindrical portion 13a1, and the valve body 13d3 of the third valve mechanism portion 13 is in contact with the valve seat 13a2 and closed. 13d4 is in contact with the valve seat 13c33 and closed. As a result, hot water does not flow from the inner tubular portion 12a1 to the branched portion 13c321 and the second inner tubular portion 33b through the branched portion 12a6 and the inner tubular portion 13b1.

As shown in FIGS. 2 and 7 to 9, cold water, which is water below the set temperature mixed and temperature-controlled by the hot and cold water mixing faucet 2, flows through the supply pipe 4 to the supply pipe attachment portion 11a3 of the first valve mechanism portion 11. Then, the temperature-sensitive spring 11b2 is immersed in cold water. The temperature-sensing spring 11b2 contracts and the projecting portion 11b11 is pressed downward by the urging force of the bias spring 11b3, thereby lowering the valve body portion 11b and separating the valve body 11b4 from the valve seat 32b to open the valve. . As a result, cold water flows to the inner tubular portion 32a and the branch portion 11a2. At this time, the cold water that has flowed through the branch portion 11a2, the inner cylinder portion 31a1, the inner cylinder portion 31c1, the inner cylinder portion 31b1, and the branch portion 12a5 into the gap 12a3 does not flow into the inner cylinder portion 12a1. This is because the diaphragm membrane 12b1 is pressed against the valve seat 12a21 by the biasing force of the biasing spring 12b3 and the pressure of the water filled in the inner cylindrical portion 32a. for the valve cannot be opened by force. The cold water flows from the inner cylindrical portion 32a to the branch portion 32a21 and the inner cylindrical portion 13a1, and pushes up the valve body 13d3 of the third valve mechanism portion 13 against the biasing force of the biasing spring 13e to separate it from the valve seat 13a2. open. As a result, cold water is discharged to the outside of the cold water discharge mechanism 10 through the lower inner cylinder portion 13c1, the branch portion 13c13, and the first inner cylinder portion 33a. At this time, since the valve body 13d4 is connected to the valve body 13d3 and the shaft portion 13d1, the valve body 13d4 rises together with the valve body 13d3 and is separated from the valve seat 13c33 to open the valve. As a result, the water remaining in the discharge pipe 5, the upper portion of the inner cylinder portion 12a1, the branch portion 12a6, the inner cylinder portion 13b1, and the upper inner cylinder portion 13c2 is removed by gravity from the upper inner cylinder portion 13c32, the branch portion 13c321, and the second inner cylinder portion 13c32. It is discharged to the outside of the cold water discharge mechanism 10 through the cylindrical portion 33b.

The present embodiment configured as described above has the following effects. When cold water is supplied from the hot water mixing faucet 2 to the cold water discharge mechanism 10, the cold water flows through the inner cylinder portion 32a, the branch portion 32a21, the inner cylinder portion 13a1, the lower inner cylinder portion 13c1, the branch portion 13c13, and the first inner cylinder portion. The cold water is discharged to the outside of the cold water discharge mechanism 10 through 33a. At the same time, water remaining in the discharge pipe 5, the upper portion of the inner cylinder portion 12a1, the branch portion 12a6, the inner cylinder portion 13b1, and the upper inner cylinder portion 13c2 is gravity-fed into the upper inner cylinder portion 13c32, the branch portion 13c321, and the second inner cylinder. It is discharged to the outside of the cold water discharge mechanism 10 through the portion 33b. This automatically prevents cold water from being unexpectedly discharged from the shower head at the beginning of use. The valve body 11b4, the valve body 12b, the valve body 13d3, and the valve body 13d4 are arranged such that their moving directions are vertical when opening and closing, and that their moving directions are parallel to each other. The valve body 11b4 can open and close the entire cross section of the inner cylinder portion 32a, the valve body 12b of the inner cylinder portion 12a1, the valve body 13d3 of the inner cylinder portion 13a1, and the valve body 13d4 of the upper inner cylinder portion 13c32. formed as possible. As a result, the cross sections of the inner cylindrical portion 32a, the inner cylindrical portion 12a1, the inner cylindrical portion 13a1, and the upper inner cylindrical portion 13c32 can be secured to allow water to flow, and a valve mechanism provided with each valve body for each inner cylindrical portion. It becomes easy to attach the parts.

In addition, since the supply pipe 4 is connected to the cold water discharge mechanism 10 from below and the discharge pipe 5 is connected to the cold water discharge mechanism 10 from above, when cold water is supplied to the cold water discharge mechanism 10, the discharge pipe 5 and the upper portion of the inner cylindrical portion 12a1 , the branch portion 12a6, the inner cylinder portion 13b1, and the upper inner cylinder portion 13c2 are easily discharged to the outside of the cold water discharge mechanism 10. As shown in FIG. Furthermore, the valve body 11b4 is provided at the valve seat 32b, the valve body 12b is provided at the valve seat 12a21, the valve body 13d3 is provided at the valve seat 13a2, and the valve body 13d4 is provided at the valve seat 13c33. Since it is formed to open and close while contacting or separating from the annular valve seat, the structure of the valve seat and the valve body can be simplified.

FIG. 10 is a diagram showing another embodiment of the present invention. The same reference numerals are used in the drawings for configurations that overlap with the above-described one embodiment, and descriptions thereof are omitted. The difference from the above-described embodiment is that the valve body portion 110b is provided in the first valve mechanism portion 11 instead of the valve body portion 11b. The valve body portion 110b of the first valve mechanism portion 110 includes a columnar shaft portion 110b1 extending in the vertical direction, a wax element portion 110b2 coaxially disposed below the shaft portion 110b1, a bias spring 110b3, and a bias spring 110b3. It has a spring 11b3 and a valve body 11b4. The wax element portion 110b2 is provided with an annular projecting portion 110b21 projecting radially slightly downward from the center portion in the vertical direction. A bias spring 110b3 is arranged between the protrusion 11a4 and the protrusion 110b21, and a bias spring 11b3 is arranged between the protrusion 110b21 and the lid 11c provided with a through hole for supporting the upper portion of the shaft 110b1. Then, the shaft portion 110b1 is assembled to the body portion 11a. The lid 11c is pressed and fixed to the main body portion 11a by the second pipe portion 32 when the second pipe portion 32 is attached to the main body portion 11a. In this state, a disk-shaped valve element 11b4 made of hard rubber is attached to the shaft portion 110b1 protruding upward from the lid 11c. When the valve body 11b4 comes into contact with an annular valve seat 32b provided on the lower end side of the second pipe portion 32, the connection between the inner tubular portion 11a1 and the inner tubular portion 32a of the second pipe portion 32 is cut off. to close the valve. The lower end of the wax element portion 110b2 is supported by a support portion 11a5 provided on the main body portion 11a. When the temperature of the water entering the inner cylindrical portion 11a1 rises, the wax element portion 110b2 expands in the vertical direction. shrink in the direction The valve body 11b4 contacts the valve seat 32b to close the valve when the temperature of the water entering the inner cylindrical portion 11a1 is hot or cold water equal to or higher than the set temperature, and the valve is opened when cold water is lower than the set temperature. ing. The urging spring 110b3 and the bias spring 11b3 are set to always act in the compression direction. Here, the first valve mechanism portion 110 and the valve seat 32b correspond to the "first valve mechanism" in the claims. The present embodiment configured as described above has the same effect as the above-described one embodiment.

1 shower device 2 hot and cold water mixing faucet 3 shower head 4 supply pipe (supply flow path)
5 discharge pipe (discharge flow path)
10 cold water discharge mechanism 11 first valve mechanism (first valve mechanism)
11a main body portion 11a1 inner cylinder portion 11a2 branch portion 11b valve body portion 11b1 shaft portion 11b4 valve body 12 second valve mechanism portion (second valve mechanism)
12a Body portion 12a1 Inner cylinder portion 12a21 Valve seat 12a3 Gap 12a5 Branch portion 12a6 Branch portion 12b Valve body 12b1 Diaphragm membrane 12b2 Base 13 Third valve mechanism portion 13a Lower elbow 13a1 Inner cylinder portion (second flow path)
13a2 valve seat (third valve mechanism)
13b Upper elbow 13b1 Inner cylindrical portion (third flow path)
13c valve case (third valve mechanism)
13c1 Lower inner cylindrical portion 13c13 Branching portion 13c2 Upper inner cylindrical portion 13c3 Partition wall portion 13c32 Upper inner cylindrical portion 13c321 Branching portion 13c33 Valve seat 13d Valve body portion (third valve mechanism)
13d1 Shaft portion 13d3 Valve element 13d4 Valve element 21 First flow path 22 Second flow path 23 Third flow path 24 Discharge flow path 31 First piping portion 31a Lower elbow 31a1 Inner cylindrical portion (first flow path)
31b Upper elbow 31b1 Inner cylindrical portion (first flow path)
31c connecting pipe 31c1 inner cylindrical portion (first flow path)
32 second pipe portion 32a inner cylindrical portion (second flow path)
32a1 Lower inner cylindrical portion 32a2 Middle inner cylindrical portion 32a21 Branch portion (second flow path)
32a3 Upper inner cylindrical portion 32b Valve seat (first valve mechanism)
33 drain pipe 33a first inner cylindrical portion (discharge channel)
33b Second inner cylindrical portion (discharge channel)
110 first valve mechanism (first valve mechanism)
110b valve body portion 110b1 shaft portion 110b2 wax element portion 131 lower third valve portion 132 upper third valve portion C case W wall surface

Claims (3)

A shower device in which a cold water discharge mechanism is arranged in the middle of a flow path connecting a shower head fixedly installed in a bathroom and a hot and cold water mixing faucet,
The cold water discharge mechanism causes the hot water to flow through the first flow path when hot water having a temperature equal to or higher than a set temperature is supplied through the supply flow path from the hot and cold water mixing faucet, and the hot water is less than the set temperature. a first valve mechanism that causes the cold water to flow through the first flow path and the second flow path when cold water is supplied;
When the hot and cold water is flowed in conjunction with the first valve mechanism arranged downstream of the first flow path, the hot water is flown from the first flow path to the discharge flow path to the shower head, and the cold water a second valve mechanism that stops the flow of water between the discharge channel and the first channel when the
arranged on the downstream side of the second flow path, and when the cold water is supplied, the cold water flows from the second flow path to the discharge flow path to the outside of the cold water discharge mechanism and stays in the discharge flow path. a third valve mechanism that allows water to flow into the discharge channel and stops the flow of water from the discharge channel to the discharge channel when the cold water is not supplied;
The valve body of each valve mechanism is formed to be able to open and close the entire cross section of one of the flow paths ,
The shower device , wherein the valve bodies of the respective valve mechanisms are arranged such that their movement directions are parallel to each other . In claim 1, the movement direction of the valve element of each valve mechanism is the vertical direction, the supply channel is connected to the cold water discharge mechanism from below, and the discharge channel is connected to the cold water discharge mechanism. A shower device connected from above . In claim 1 or claim 2, each of the valve bodies of each of the valve mechanisms is formed to open and close by contacting or separating from an annular valve seat provided at the end of one of the flow paths. shower device .

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