TWI691633B - Faucet - Google Patents

Abstract

The purpose of the present invention is to provide a faucet that can make the buttons operate more normally. The faucet according to the present invention includes: a water outlet pipe, a switching valve, an operating part, and an alternating mechanism. The switching valve is arranged to move from a first position to a second position. The position of the resistance to water pressure when the position moves.

Description

Faucet

The invention relates to a faucet.

In the past, some people have disclosed faucets used in kitchens, toilets, etc. (for example, refer to Patent Document 1). The faucet disclosed in Patent Document 1 includes a water outlet pipe forming a water outlet, and a button installed at the front end of the water outlet pipe. By the operation of the button, it is possible to switch between straight and spray water.

A spring biasing the button forward is provided inside the water outlet pipe. When the user presses the button, the button will move from the front position to the rear position against the bias of the spring and remain in the rear position. At this time, water will be sprayed out. When the user further presses the button, the button will return to the front position from the rear position by the biasing force of the spring and remain in the front position. At this time, the water will be discharged straight. [Conventional Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2005-16032

[Problems to be solved by the invention]

In the structure of Patent Document 1, the biasing force of the spring is used to reset the button. Therefore, when the biasing force of the spring is insufficient, the button cannot be reset and the normal operation may not be performed. In order to prevent this, it is necessary to respond to a large increase in the biasing force of the spring. In this way, there is still room for improvement in the mechanism of operating the button normally by using the biasing force of the spring to operate the button.

Therefore, the object of the present invention is to solve the above-mentioned problem, and to provide a faucet that can operate a button more normally in a mechanism that uses a biasing force of a spring to operate the button. [Technical means to solve the problem]

In order to achieve the above object, the faucet of the present invention includes: a water outlet pipe extending in the axial direction and formed inside: an upstream-side flow passage, a first downstream-side flow passage branching downstream of the upstream-side flow passage, and a second downstream A side flow channel, and a connection flow channel connecting the upstream side flow channel and the first and second downstream side flow channels; a switching valve is provided on the connection flow channel and can be between the first position and the second position Moving, the first position is the position where the inlet of the first downstream side flow path is closed to communicate the upstream side flow path with the second downstream side flow path, and the second position is the second downstream side The position where the inlet of the flow path is closed to communicate the upstream flow path with the first downstream flow path; the position holding mechanism is a mechanism that holds the switching valve at the respective positions of the first position and the second position , And has a biasing member that biases the switching valve toward the second position; and an operation portion that moves the switching valve between the first position and the second position by the user's operation, the switching The valve system is provided at a position where the hydraulic resistance received when moving from the first position to the second position is less than the hydraulic resistance received when moving from the second position to the first position. [Comparing the efficacy of the previous technology]

According to the faucet of the present invention, the buttons can be operated more normally.

Hereinafter, an embodiment according to the present invention will be described in detail based on the drawings. Moreover, the present invention is not limited by this embodiment.

(Implementation) 1 and 2 are schematic perspective views of the faucet 2 in the embodiment of the present invention. FIG. 1 shows the state where the outlet pipe 6 of the faucet 2 is housed, and FIG. 2 shows the state where the outlet pipe 6 is withdrawn to the front. 3 and 4 are diagrams showing the schematic structure of the water pipe 6. Fig. 3 is a side view of the outlet pipe 6, and Fig. 4 is a bottom view of the outlet pipe 6.

The faucet 2 shown in FIGS. 1 and 2 is a single-lever faucet device used in kitchens, toilets, and the like. The faucet 2 includes a body portion 4, a rod 5, a water outlet pipe 6, a button 10, and a water outlet portion 12 that are installed upright on an installation stand (not shown). The water outlet 12 is a member formed with a plurality of water spray holes that flow out of cold and hot water, and is also called a "water spray plate" or a "spray panel".

The body portion 4 is a member that integrally supports the rod 5 and the water outlet pipe 6. A button 10 and a water outlet 12 are attached to the front end of the water outlet pipe 6. The outlet pipe 6 is also called "sprinkler". The water outlet pipe 6 extends in the axial direction C from the base end side connected to the main body 4 toward the front end side where the button 10 is attached.

The user can switch the water outlet/stop water from the water outlet part 12 and adjust the water outlet temperature and the water outlet volume by operating the lever 5. Furthermore, the user can switch between spraying out the water and straight out the water from the water outlet 12 by pressing the operation button 10. The button 10 is an example of an operation unit for switching out water by user's operation. The detailed mechanism for the switching of outlet water will be described later.

The internal structure of the water outlet pipe 6 shown in FIGS. 3 and 4 will be described using FIGS. 5 and 6. 5 is a cross-sectional view taken along line A-A of FIG. 3, and FIG. 6 is a cross-sectional view taken along line B-B of FIG.

As shown in FIGS. 5 and 6, a flow path forming portion 14 is provided inside the water outlet pipe 6. The flow path forming portion 14 is a member that forms a flow path for cold and hot water to be discharged from the water discharge portion 12. The hot and cold water is supplied from the cold and hot water supply source (not shown) located on the upstream side to the flow path forming portion 14 through another flow path forming portion 38.

As shown in FIG. 6, the flow path forming portion 14 includes a tube portion 15. The tube portion 15 is a tubular member in which the first downstream flow path 16 and the second downstream flow path 18 are formed. The first downstream-side flow path 16 is a flow path for straight outflow, and the second downstream-side flow path 18 is a flow path for spraying out water. Both the first downstream side flow path 16 and the second downstream side flow path 18 are connected to the water outlet of the water outlet 12.

The flow path forming portion 14 further includes a flow path switching portion 20 for selectively switching the first downstream side flow path 16 and the second downstream side flow path 18. The flow path switching unit 20 includes a switching valve 22 (FIG. 6 ), a valve holding portion 24, a cam mechanism 26 (FIG. 5 ), a connecting portion 28 and a position holding mechanism 30.

The switching valve 22 is a valve body that selectively closes any one of the first downstream side flow path 16 and the second downstream side flow path 18. The switching valve 22 according to the embodiment of the present invention is a ball valve that can perform a rotational movement centering on the axial direction C of the outlet pipe 6. The switching valve 22 is rotatable between a position (first position) closing the inlet 16A of the first downstream side flow path 16 and a position (second position) closing the inlet 18A of the second downstream side flow path 18. FIG. 6 shows a state where the switching valve 22 is located at the first position. In this state, water is sprayed from the water outlet 12 via the second downstream-side flow channel 18.

The valve holding portion 24 is a member that holds the switching valve 22. The valve holding portion 24 is connected to the cam mechanism 26 (FIG. 5 ). The cam mechanism 26 is a member that converts the linear motion in the axial direction C generated by pressing the button 10 into a rotational motion centered on the axial direction C of the outlet pipe 6. The cam mechanism 26 is connected to the second connection portion 28b of the connection portion 28.

The connecting portion 28 is a member that connects the cam mechanism 26 and the position holding mechanism 30 described later to each other. The connecting portion 28 is attached to the inside of the button 10 and moves in the axial direction C of the outlet pipe 6 in response to the pressing of the button 10. The connecting portion 28 includes a first connecting portion 28a and a second connecting portion 28b, and these are used as two branched branches. The first connection portion 28 a is connected to the position holding mechanism 30, and the second connection portion 28 b is connected to the cam mechanism 26.

The position holding mechanism 30 is a mechanism that maintains two states of the pressed state and the non-pressed state of the button 10, respectively. That is, the position holding mechanism 30 has a function of holding the switching valve 22 at each of the first position and the second position. The position holding mechanism can also be referred to as an "alternate mechanism". The first position of the switching valve 22 shown in FIGS. 5 and 6 corresponds to the pressed state of the button 10, and the second position of the switching valve 22 corresponds to the non-pressed state of the button 10.

As shown in FIG. 5, the position holding mechanism 30 includes a tapping mechanism including springs 32A and 32B. The springs 32A and 32B of the embodiment of the present invention are used as an example of a biasing member that biases the switching valve 22 toward the second position. In the first position shown in FIG. 6, although the springs 32A and 32B bias the switching valve 22 toward the second position, they are still maintained at the first position by the position holding mechanism 30.

In the above configuration, when the switching valve 22 is in the non-pressed state, that is, at the second position, the biasing force of the springs 32A, 32B is moved by the push operation of the button 10 to move to the first position. In the first position, water is sprayed from the water outlet 12. When the operation button 10 is further pressed from this state, the maintenance state of the switching valve 22 by the position holding mechanism 30 is released. Thereby, the switching valve 22 is moved to the second position by the biasing force of the springs 32A, 32B. In the second position, the water is discharged straight. By pressing the button 10 in this way, the position of the switching valve 22 can be switched between the first position and the second position to switch between spraying water and straight water.

Next, the surrounding structure of the switching valve 22 will be described using FIG. 7. FIG. 7 is an enlarged longitudinal sectional view of the periphery of the switching valve 22.

As shown in FIG. 7, in the water outlet pipe 6, in addition to the first downstream side flow channel 16 and the second downstream side flow channel 18, an upstream side flow channel 34 and a connection flow channel 36 are also provided.

The upstream side flow channel 34 is the most upstream flow channel among the flow channels in the outlet pipe 6. The upstream flow path 34 is provided on the upstream side of the connection flow path 36 and is connected to the connection flow path 36. The upstream flow path 34 is formed by another flow path forming portion 38. The hot and cold water system with the adjusted temperature and flow rate is supplied to the upstream-side flow path 34 from the body portion 4 (FIGS. 1 and 2 ).

The connection flow channel 36 is a flow channel that connects the upstream side flow channel 34 with the first downstream side flow channel 16 and the second downstream side flow channel 18. The connecting flow channel 36 is provided between the upstream side flow channel 34 and the first downstream side flow channel 16 and the second downstream side flow channel 18. As shown in FIG. 7, the switching valve 22 and the valve holding portion 24 are arranged in the connecting flow channel 36. FIG. 7 shows a state where the switching valve 22 is located at the second position closing the second downstream-side flow path 18.

As shown in FIG. 7, an orifice 39 is formed at the boundary between the upstream flow channel 34 and the connection flow channel 36. The orifice 39 is formed by an orifice plate 40 that protrudes inward from the inner peripheral wall of the flow path forming portion 38. The orifice 39 constitutes the outlet 34A of the upstream flow channel 34.

In the state where cold and hot water flows in the water outlet pipe 6, the water flow W from the upstream side flow channel 34 impacts the side surface 24A of the valve holding portion 24, and the switching valve 22 held by the valve holding portion 24 is applied to the first The hydraulic resistance R when moving between the position and the second position.

Next, the water pressure resistance R received when the switching valve 22 is located at each of the first position and the second position will be described using FIGS. 8A and 8B. FIG. 8A shows the state where the switching valve 22 is located at the first position, and FIG. 8B shows the state where the switching valve 22 is located at the second position.

In the embodiment of the present invention, it is designed that the water pressure resistance R1 received at the first position shown in FIG. 8A will be smaller than the water pressure resistance R2 received at the second position shown in FIG. 8B. Specifically, this is achieved by setting the positional relationship of the plurality of flow paths 16, 18, and 34, and the positions of the switching valve 22 and the valve holding portion 24 in advance at predetermined positions. With this setting, the hydraulic resistance (≒R1) received by the switching valve 22 when moving from the first position to the second position will be less than the hydraulic resistance (≒R2) received when moving from the second position to the first position ). As described above, when the switching valve 22 moves from the first position to the second position, the biasing force of the springs 32A and 32B of the position holding mechanism 30 is used to move the switching valve 22. At this time, since the water pressure resistance (≒R1) received by the switching valve 22 is set to be small, even when the biasing force of the springs 32A and 32B is small, the switching valve 22 can be moved to return. Thereby, the button 10 can be operated normally.

On the other hand, when the switching valve 22 moves from the second position to the first position, the switching valve 22 is moved by pressing the button 10 against the biasing force of the springs 32A and 32B. Although the hydraulic resistance (≒R2) at this time is set to be large, unlike the case where the biasing force of the springs 32A and 32B is used, the user can surely move the switching valve 22 by applying a large pressing force .

If you want to calculate and measure the water pressure resistance R1, R2 in the first position and the second position, for example, by pressing "the pressure measured by the dynamometer to move the switching valve 22, the pressing force of the button 10 (maximum The value of ")" is replaced with "hydraulic resistance R1, R2" and calculated indirectly. A commercially available dynamometer can also be used as a dynamometer. Alternatively, a pressure gauge may be provided in the connecting flow channel 36 to directly calculate the hydraulic resistances R1 and R2.

In order to realize the relationship of the water pressure resistance as described above, the faucet 2 in the embodiment of the present invention adopts the elaborate conception of the positional relationship shown in FIG. 9. FIG. 9 is a diagram showing the inside of the outlet pipe 6 when viewed from the flow path direction of the upstream-side flow passage 34 (axial direction C of the outlet pipe 6).

As shown in FIG. 9, the outlet 34A (orifice 39) of the upstream flow path 34 has a circular cross section. There is a center 34C at the outlet 34A of the upstream flow path 34. The inlet 16A of the first downstream flow path 16 and the inlet 18A of the second downstream flow path 18 are located in front of the outlet 34A of the upstream flow path 34 (the front end side of the outlet pipe 6) through the connection flow path 36. Both the inlet 16A and the inlet 18A are circular in cross section. There is a center 16C at the entrance 16A, and a center 18C at the entrance 18A.

As shown in FIG. 9, the center 16C of the inlet 16A is located above the center 34C of the outlet 34A. On the other hand, the center 18C of the inlet 18A is located below the center 34C of the outlet 34A.

The distance D1 from the center 16C to the center 34C (cross section distance, height distance) is set longer than the distance D2 from the center 34C to the center 18C (cross section distance, height distance). With this setting, in the longitudinal section shown in FIG. 9, the inlet 16A of the first downstream side flow channel 16 is located at the inlet of the second downstream side flow channel 18 relative to the outlet 34A of the upstream side flow channel 34. 18A further away. As a result, in the first position where the switching valve 22 closes the inlet 16A of the first downstream-side flow path 16 compared to the second position, the area directly impacted by the water flow W on the side surface 24A of the valve holding portion 24 will be smaller . Therefore, the water pressure resistance R received by the switching valve 22 is also small. By setting the positions of the centers 16C, 18C, and 34C in this way, it is possible to simply realize that the hydraulic resistance R1 received at the first position shown in FIG. 8A will be smaller than the hydraulic resistance received at the second position shown in FIG. 8B The composition of R2.

In addition, since the first downstream-side flow path 16 is located above the second downstream-side flow path 18, the switching valve 22 can receive the propulsive force caused by gravity when moving from the first position to the second position . Since the biasing force of the springs 32A and 32B can be used in addition to the propulsive force of gravity, even when the biasing force of the springs 32A and 32B is further reduced, the switching valve 22 can be surely moved. Thereby, the button 10 can be operated normally.

Furthermore, since the first downstream-side flow path 16 and the second downstream-side flow path 18 are arranged side by side in the vertical direction, the dimension of the outlet pipe 6 in the width direction X can be shortened. Thereby, the water outlet pipe 6 can be made thinner, and the design of the faucet 2 can be improved.

As described above, the faucet 2 according to the embodiment of the present invention includes the water outlet pipe 6, the button 10, the switching valve 22, and the position holding mechanism 30. The outlet pipe 6 is formed inside: an upstream side flow channel 34, a first downstream side flow channel 16, a second downstream side flow channel 18, and a connecting flow channel 36. The switching valve 22 can be moved between a first position and a second position, which closes the inlet 16A of the first downstream-side flow path 16 to communicate the upstream-side flow path 34 with the second downstream-side flow path 18 The second position is a position where the inlet 18A of the second downstream-side flow path 18 is closed, and the upstream-side flow path 34 communicates with the first downstream-side flow path 16. The button 10 is an operation portion that moves the switching valve 22 between the first position and the second position by the user's pressing operation. The position holding mechanism 30 is a mechanism that holds the switching valve 22 at each of the first position and the second position, and has springs 32A and 32B that bias the switching valve 22 toward the second position. The switching valve 22 is provided at a position where the hydraulic resistance (≒R1) received when moving from the first position to the second position is less than the hydraulic resistance (≒R2) received when moving from the second position to the first position .

According to this structure, when the switching valve 22 is moved from the second position to the first position, the button 10 is pressed against the spring force, and on the other hand, the spring 32A is used when returning from the first position to the second position , 32B bias to return the switching valve 22. Since the biasing force of the springs 32A and 32B is used to set the water pressure resistance (≒R1) that the switching valve 22 receives when it returns, it is set to be smaller than the water pressure resistance (≒R2) when the switching valve 22 moves in the reverse direction. By setting the bias pressure in the manner of the hydraulic resistance, the switching valve 22 can be surely reset. With such a configuration, the switching valve 22 can be reliably reset even if the spring force is set to be small, and the button 10 can be operated normally in a mechanism that operates the button 10 by the biasing force of the springs 32A and 32B.

In addition, according to the faucet 2 according to the embodiment of the present invention, the first downstream side flows relative to the center 34C of the outlet 34A of the upstream side flow channel 34 in the cross section viewed from the direction of the upstream side flow channel 34. The center 16C of the inlet 16A of the channel 16 is located farther than the center 18C of the inlet 18A of the second downstream side flow channel 18.

With such a configuration, the inlet 16A of the first downstream-side flow path 16 will be farther from the outlet 34A of the upstream-side flow path 34 than the inlet 18A of the second downstream-side flow path 18, and therefore is located at the first position that closes the inlet 16A The water pressure resistance R1 to which the switching valve 22 is subjected will also be small. In this way, the water pressure resistance (≒R1) that the switching valve 22 receives when moving from the first position to the second position can be easily achieved is smaller than the water pressure resistance (≒ R2).

In addition, according to the faucet 2 according to the embodiment of the present invention, the center 16C of the inlet 16A of the first downstream-side flow path 16 is located more downstream than the second in the cross section viewed from the direction of the upstream-side flow path 34. A position above the center 18C of the inlet 18A of the side flow channel 18.

With such a configuration, when the switching valve 22 moves from the first position closing the first downstream side flow path 16 to the second position closing the second downstream side flow path 18, the biasing force of the spring , Is also subject to the propulsive force caused by gravity. Thereby, even if the biasing force of the spring is further reduced, the switching valve 22 can be surely moved, and the button 10 can be normally operated.

In addition, according to the faucet 2 according to the embodiment of the present invention, the first downstream-side flow path 16 and the second downstream-side flow path 18 are arranged side by side vertically.

In this way, by arranging the two downstream flow channels 16 and 18 side by side in parallel, the lateral size of the water outlet pipe 6 can be made smaller. With this, the design of the faucet 2 can be improved.

In addition, according to the faucet 2 according to the embodiment of the present invention, the switching valve 22 is provided at a position where the hydraulic resistance R1 received at the first position is smaller than the hydraulic resistance R2 received at the second position.

With such a configuration, the hydraulic resistance (≒R1) received when moving from the first position to the second position can be easily achieved less than the hydraulic resistance received when moving from the second position to the first position ( ≒R2) composition.

In addition, the present invention is not limited to this embodiment, but can be implemented in various other aspects. For example, in the embodiment, the case where the faucet 2 is a single-lever type faucet device is described, but it is not limited to this case, and it may be a faucet device other than the single-lever type.

In addition, in the embodiment, the center 16C of the inlet 16A of the first downstream side flow channel 16 is provided at the inlet of the second downstream side flow channel 18 with respect to the center 34C of the outlet 34A of the upstream side flow channel 34. The case where the center of 18A is further away from 18C is described, but it is not limited to this case. The distance D1 from the center 16C to the center 34C and the distance D2 from the center 34C to the center 18C may be set to be the same. In this case, the vertical relationship between the inlet 16A of the first downstream side flow channel 16 and the inlet 18A of the second downstream side flow channel 18 can also be maintained, or the side surface 24A of the valve holding portion 24 that is impacted by the water flow W can be changed Shape, etc. to achieve the magnitude relationship of the hydraulic resistance shown in FIGS. 8A and 8B.

In addition, in the embodiment, the case where two springs, that is, springs 32A and 32B are provided as the springs 32A and 32B of the position holding mechanism 30 is described, but the number and positions of the springs are not limited thereto. Any spring can be used as long as it has the function of biasing the switching valve 22 toward either the first position or the second position.

In addition, in the embodiment, the springs 32A and 32B are exemplified as the biasing members of the bias switching valve 22, but it is not limited to this case. As long as it has the function of biasing the switching valve 22, any form of biasing member other than a spring may be used.

In addition, in the embodiment, the button 10 is exemplified as an example of an operation portion by which the user switches the position of the switching valve 22, but it is not limited to this case. The position of the switching valve 22 may be switched by operations other than the pressing operation (for example, twisting and rotating), and an operation unit of any form may be used.

In addition, in the embodiment, the case where the water flow W flowing through the upstream-side flow channel 34 directly hits the side surface 24A of the valve holding portion 24 is described, but it is not limited to this case. For example, as in the modification shown in FIG. 10, the flow rate adjustment plate 52 may be provided. As shown in FIG. 11, the flow rate adjusting plate 52 shown in FIG. 10 is a disk-shaped member in which a plurality of through holes 54 are formed in the thickness direction. In the example shown in FIG. 10, the flow rate adjustment plate 52 is provided adjacent to the orifice plate 40. The flow rate adjusting plate 52 is fixed by being pressed by a hose (not shown) in a state of being inserted in the position shown in FIG. 10, but it is not limited to the case where it is provided separately from the flow path forming portion 38, It may be formed integrally with the flow path forming portion 38. According to this structure, the flow rate of the water flow W flowing through the upstream flow channel 34 will decrease when passing through the flow rate adjustment plate 52. This can prevent the hydraulic resistance R2 applied to the side surface 24A of the valve holding portion 24 from becoming too large. Therefore, the position of the switching valve 22 can be easily switched by the pressing operation of the button 10.

The flow rate adjustment plate 52 is not limited to the configuration shown in FIGS. 10 and 11, and any configuration may be adopted as long as the flow rate of the water flow W can be reduced. For example, the flow adjustment plates 62 and 72 shown in FIGS. 12 and 13 may be used. The flow adjustment plate 62 shown in FIG. 12 is a disk-shaped member that penetrates the plurality of through holes 64 in the thickness direction, and the flow adjustment plate 72 shown in FIG. 13 also penetrates the plurality of through holes 74 in the thickness direction. Disk-shaped member. With such a configuration, the flow rate of the water flow W can be reduced when the water flow W flowing through the upstream flow channel 34 passes through the flow rate adjustment plate 62 or the flow rate adjustment plate 72. This can prevent the hydraulic resistance R2 from becoming excessively large, and therefore, the position of the switching valve 22 can be easily switched by the pressing operation of the button 10.

In addition, by appropriately combining the various aspects described above, the effects possessed by them can be achieved.

The present invention is fully described with reference to the attached drawings and in combination with the preferred embodiments, but for those with ordinary knowledge in the technical field, they should be aware of various modifications or corrections. Such deformations or corrections should be understood to be included in the present invention as long as they do not deviate from the scope of the present invention regulated by the scope of the additional invention patent application. In addition, the combination of elements or the sequence change in the embodiment can be realized without departing from the scope and technical idea of the present invention. [Industry use possibility]

The present invention has real benefits for faucets.

2‧‧‧Faucet 4‧‧‧Body 5‧‧‧ 6‧‧‧ Outlet pipe 8‧‧‧Water outlet 10‧‧‧ button (operation part) 12‧‧‧Water Department 14‧‧‧Forming Department 15‧‧‧ Management Department 16‧‧‧The first downstream flow channel 16A, 18A‧‧‧ entrance 16C, 18C, 34C‧‧‧ Center 18‧‧‧Second downstream channel 20‧‧‧Flow channel switching section 22‧‧‧Switch valve 24‧‧‧Valve holding part 24A‧‧‧Side 26‧‧‧Cam mechanism 28‧‧‧Connect 28a‧‧‧First connection 28b‧‧‧Second connection 30‧‧‧Position holding mechanism (alternating mechanism) 32A, 32B‧‧‧Spring (biasing member) 34‧‧‧Upstream flow channel 34A‧‧‧Export 36‧‧‧Connecting the flow channel 38‧‧‧Forming Department 39‧‧‧ Orifice 40‧‧‧ Orifice plate 52、62、72‧‧‧Flow adjustment board 54, 64, 74 C‧‧‧axis direction D1, D2‧‧‧Distance R, R1, R2 W‧‧‧Water flow X‧‧‧Width direction

FIG. 1 is a diagram showing a schematic structure of a faucet in an embodiment of the present invention. FIG. 2 is a diagram showing a schematic structure of a faucet in an embodiment of the present invention. 3 is a side view showing the water outlet pipe in the embodiment of the present invention. 4 is a bottom view showing the water outlet pipe in the embodiment of the present invention. Fig. 5 is a cross-sectional view taken along line A-A of Fig. 3. Fig. 6 is a cross-sectional view taken along line B-B of Fig. 4. 7 is an enlarged longitudinal sectional view of the periphery of the switching valve in the embodiment of the present invention. 8A is a longitudinal cross-sectional view showing the switching valve in the first position and its surroundings. 8B is a longitudinal cross-sectional view showing the switching valve in the second position and its surroundings. 9 is a diagram showing the inside of the outlet pipe when viewed from the direction of the flow path of the upstream side flow path. 10 is a cross-sectional view showing a switching valve and its surroundings in a modification of the present invention. FIG. 11 is a perspective view showing a flow rate adjustment plate in a modification of the present invention. FIG. 12 is a perspective view showing a flow rate adjustment plate in another modification of the present invention. Fig. 13 is a perspective view showing a flow rate adjustment plate in another modification of the present invention.

16‧‧‧The first downstream flow channel

16A, 18A‧‧‧ entrance

18‧‧‧Second downstream channel

22‧‧‧Switch valve

24‧‧‧Valve holding part

24A‧‧‧Side

34‧‧‧Upstream flow channel

34A‧‧‧Export

36‧‧‧Connecting the flow channel

38‧‧‧Forming Department

39‧‧‧ Orifice

40‧‧‧ Orifice plate

R‧‧‧Water pressure resistance

W‧‧‧Water flow

Claims (4)

A faucet comprising: a water outlet pipe extending in the axial direction and formed inside: an upstream flow channel; a first downstream flow channel and a second downstream flow channel, branching downstream of the upstream flow channel; and a connection The flow channel connects the upstream side flow channel with the first downstream side flow channel and the second downstream side flow channel; a switching valve is provided on the connection flow channel and can move between the first position and the second position The first position is the position where the inlet of the first downstream side flow channel is closed so that the upstream side flow channel communicates with the second downstream side flow channel; the second position is the second downstream side flow A position where the inlet of the channel is closed to communicate the upstream flow channel with the first downstream side flow channel; a position holding mechanism that holds the switching valve at each of the first position and the second position, and Including a biasing member that biases the switching valve toward the second position; and an operating portion that moves the switching valve between the first position and the second position by user operation; wherein the switching valve It is located at a position where the hydraulic resistance received when moving from the first position to the second position is less than the hydraulic resistance received when moving from the second position to the first position; and flows from the upstream side In the cross section viewed in the direction of the flow channel, the center of the inlet of the first downstream side flow channel is located farther from the center of the inlet of the second downstream side flow channel than the center of the outlet of the upstream side flow channel position. A faucet containing: The water outlet pipe extends in the axial direction and is formed inside: an upstream-side flow channel; a first downstream-side flow channel and a second downstream-side flow channel branching downstream of the upstream-side flow channel; The upstream flow path is connected to the first downstream flow path and the second downstream flow path; a switching valve is provided on the connection flow path and can move between a first position and a second position; the first position , Is the position where the inlet of the first downstream side flow passage is closed to make the upstream side flow passage communicate with the second downstream side flow passage; the second position is that the inlet of the second downstream side flow passage is closed and A position where the upstream flow path communicates with the first downstream flow path; a position holding mechanism that holds the switching valve at each of the first position and the second position, and includes the switching valve A biasing member biased toward the second position; and an operation portion, which moves the switching valve between the first position and the second position by user's operation; wherein the switching valve is provided at the The position of the water pressure resistance when moving from the first position to the second position is less than the position of the water pressure resistance when moving from the second position to the first position; and in the direction of the flow path from the upstream side flow path In the observed cross section, the center of the inlet of the first downstream side flow path is located above the center of the inlet of the second downstream side flow path. A faucet comprising: a water outlet pipe extending in the axial direction and formed inside: an upstream flow channel; a first downstream flow channel and a second downstream flow channel, branching downstream of the upstream flow channel; and a connection The flow channel connects the upstream side flow channel with the first downstream side flow channel and the second downstream side flow channel; a switching valve is provided on the connection flow channel and can move between the first position and the second position The first position is to close the inlet of the first downstream-side flow channel to make the upstream-side flow channel communicate with the second downstream-side flow channel The second position is the position where the inlet of the second downstream side flow channel is closed to allow the upstream side flow channel to communicate with the first downstream side flow channel; the position holding mechanism holds the switching valve at the A mechanism for the respective positions of the first position and the second position, and includes a biasing member that biases the switching valve toward the second position; and an operation portion, which is operated by the user to position the switching valve at the Moving between the first position and the second position; wherein the switching valve is arranged to move from the first position to the second position when the hydraulic pressure resistance is less than when moving from the second position to the first position The position of the hydraulic pressure resistance received; and the first downstream-side flow channel and the second downstream-side flow channel are arranged side by side vertically. A faucet comprising: a water outlet pipe extending in the axial direction and formed inside: an upstream flow channel; a first downstream flow channel and a second downstream flow channel, branching downstream of the upstream flow channel; and a connection The flow channel connects the upstream side flow channel with the first downstream side flow channel and the second downstream side flow channel; a switching valve is provided on the connection flow channel and can move between the first position and the second position The first position is the position where the inlet of the first downstream side flow channel is closed so that the upstream side flow channel communicates with the second downstream side flow channel; the second position is the second downstream side flow A position where the inlet of the channel is closed to communicate the upstream flow channel with the first downstream side flow channel; a position holding mechanism that holds the switching valve at each of the first position and the second position, and Including a biasing member that biases the switching valve toward the second position; and an operating portion that moves the switching valve between the first position and the second position by user operation; wherein The switching valve is provided at a position where the hydraulic resistance received when moving from the first position to the second position is less than the hydraulic resistance received when moving from the second position to the first position; and the switching valve It is set at a position where the water pressure resistance received at the first position is less than the water pressure resistance received at the second position.

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