JP6460571B2 - Flow control valve and faucet - Google Patents

Description

  The disclosed embodiments relate to a flow control valve and a faucet.

  2. Description of the Related Art Conventionally, a flow rate adjusting valve that adjusts a flow rate by rotating a valve body that is rotatably inserted into a case portion is known (see, for example, Patent Document 1). The case portion described above is formed in a cylindrical shape, and an inflow port for water inflow and an outflow port for water outflow are provided on the cylinder wall so as to face each other. The valve body is also formed in a cylindrical shape, and a closed surface and a water passage portion are provided on the cylindrical wall.

  The blocking surface blocks the outflow port of the case portion when the valve body is in the water stop position so that water does not flow out from the outflow port. Then, when the valve body is rotated from the water stop position and the water passage portion faces the inflow port and the outflow port of the case portion, the water flows from the inflow port to the outflow port through the water flow portion and flows out. .

  By the way, in the above-described flow rate adjusting valve, the maximum flow rate angle until the valve body is rotated from the water stop position and the amount of water outflow is maximized is set to about 90 degrees.

JP 2008-69977 A

  However, as described above, when the maximum flow rate angle is 90 degrees, there is a problem that fine flow rate adjustment is difficult because the maximum flow rate is obtained by rotation of 90 degrees. Moreover, even if the above-described valve body is rotated by more than 90 degrees, the blocking surface moves to the inlet side and closes the inlet, so that the outflow amount of water decreases. For this reason, it is difficult to ensure the amount of water outflow according to the rotation of the valve body.

  One aspect of the embodiment is made in view of the above, and includes a flow rate adjustment valve and a water faucet that can perform fine flow rate adjustment while ensuring an outflow amount of water corresponding to rotation of a valve body. The purpose is to provide.

A flow rate adjusting valve according to one aspect of the embodiment is formed in a cylindrical shape, and has a water inflow inlet and a water outflow outlet provided at predetermined positions in the circumferential direction on the cylindrical wall; A valve body that is formed in a cylindrical shape and is rotatably fitted in the case portion, and the valve body faces the inflow port and the outflow port in response to rotation from the inflow port. A water flow portion for allowing water to flow to the outlet through the internal space of the valve body, and an inflow auxiliary passage for allowing water to flow from the inlet to the internal space only when facing the inlet in response to rotation. comprises a water portion, wherein the inflow auxiliary water passage section, characterized in that it is arranged at a position shifted in a direction to the rotation axis of the valve body relative to the outlet.

  Thereby, for example, even when the valve body is rotated over 90 degrees from the water stop position and the closing surface of the valve body moves to the inlet side to close the inlet, water flows in from the inlet. It will flow into the internal space of the valve body through the auxiliary water passage. Therefore, when the maximum flow angle of the flow control valve is expanded beyond 90 degrees, it is possible to ensure a sufficient amount of inflow at the inflow auxiliary water flow section, so that an amount of water that can flow out of the valve body is secured. However, fine flow rate adjustment can be performed.

  Further, the water flow portion is formed across a first section in the circumferential direction of the cylindrical wall of the valve body and a second section located on the valve opening side with respect to the first section. The rate of increase of the water flow area facing the outflow port when the valve body rotates in the valve opening direction is greater than the rate of increase of the water flow portion of the first section. It is characterized by being formed to be large.

  The outflow amount of the flow rate adjusting valve varies depending on the water flow area of the water flow portion facing the above-described outlet. Therefore, by configuring the water flow sections of the first and second sections as described above, the rate of increase in the amount of outflow when the valve body is rotated in the valve opening direction is set to the outlet through the first section. It can be made different between the case where the water portion faces and the case where the water passage portion of the second section faces.

  Thereby, for example, while suppressing the increase rate of the outflow amount when the water flow part of the first section faces the outflow port, the water flow part of the second section faces the outflow port. It is possible to increase the rate of increase of the outflow amount, and thus finer flow rate adjustment can be performed.

  Further, the inflow auxiliary water passing portion is formed at a position including at least the first section of the valve body. Thereby, the inflow amount can be sufficiently secured. That is, for example, when the water passage portion of the first section faces the inflow port and the water passage portion of the second section faces the outflow port due to the rotation of the valve body, the water flow area on the inflow side is the outflow port. There is a risk that the amount of inflow cannot be secured due to a smaller water flow area on the side. However, since the inflow auxiliary water passing portion is formed at the above-described position, water flows into the internal space of the valve body through the inflow auxiliary water passing portion, and thus the inflow amount can be sufficiently secured.

  The valve body is formed such that the length of the portion facing the inflow port in the rotation axis direction is shorter than the length of the inflow port, and the inflow auxiliary water passage portion is in the rotation axis direction. It is a gap formed between the edge of the valve body and the edge of the inlet. Thereby, an inflow auxiliary water flow part can be provided with a simple configuration.

  The valve body includes a closed surface that closes the outlet when in the water stop position, and the water flow portion and the inflow auxiliary water flow portion are symmetrical in the circumferential direction with respect to the center of the closed surface. It is provided so that it may become.

  As a result, the valve opening direction of the valve body can be set to either the clockwise direction or the counterclockwise direction with respect to the rotation axis of the valve body, and the versatility of the flow regulating valve can be improved. Can do.

  A faucet according to one aspect of the embodiment includes the above-described flow rate adjustment valve. As a result, it is possible to provide a faucet adapted to perform fine flow rate adjustment while ensuring the amount of water outflow corresponding to the rotation of the valve body.

  According to one aspect of the embodiment, fine flow rate adjustment can be performed while ensuring the amount of water outflow corresponding to the rotation of the valve body.

FIG. 1 is a cross-sectional view of a faucet provided with a flow rate adjustment valve according to an embodiment. FIG. 2 is a left side view showing a state in which the flow rate adjusting valve shown in FIG. 1 is taken out from the valve accommodating portion. FIG. 3 is an exploded perspective view of the flow regulating valve. 4 is a cross-sectional view taken along line IV-IV of the flow regulating valve shown in FIG. FIG. 5 is a cross-sectional view showing the flow rate adjustment valve in a state in which the valve body has rotated more than 90 degrees around the rotation axis from the water stop position. FIG. 6 is a diagram illustrating the maximum flow rate angle in the flow rate adjustment valve. FIG. 7A is a developed view (No. 1) of a case portion and a valve body. FIG. 7B is a developed view (No. 2) of the case portion and the valve body. FIG. 7C is a developed view (No. 3) of the case portion and the valve body. FIG. 7D is a developed view (No. 4) of the case portion and the valve body. FIG. 7E is a developed view (No. 5) of the case portion and the valve body.

  Hereinafter, embodiments of a flow control valve and a faucet disclosed in the present application will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by embodiment shown below.

  FIG. 1 is a cross-sectional view of a faucet provided with a flow rate adjustment valve according to an embodiment. Note that FIG. 1 and the drawings after FIG. 2 described later are both schematic views.

  As shown in FIG. 1, the faucet 1 is a single faucet and includes a main body portion 10, a flow rate adjustment valve 20, a water discharge portion 100, and a handle 200. In the faucet 1, when the handle 200 is rotated by the user, the flow rate adjusting valve 20 operates, thereby stopping water, discharging water, and adjusting the flow rate of water to be discharged. Here, “water” is used to mean not only room temperature water such as tap water but also various liquids such as hot water, hot water, and purified water.

  The main body 10 includes a primary side flow path 11, a valve housing part 12, and a secondary side flow path 13. The primary channel 11 is connected to a water source such as a water pipe (not shown), and distributes water supplied from the water source.

  The valve accommodating portion 12 is provided between the primary side flow path 11 and the secondary side flow path 13 and accommodates the flow rate adjustment valve 20. Specifically, the flow rate adjustment valve 20 is accommodated in the tubular member 16, and the valve accommodating portion 12 accommodates the flow rate adjustment valve 20 in a state accommodated in the tubular member 16. By adopting the above-described configuration, for example, even when the valve accommodating portion 12 or the secondary side flow path 13 is formed by plastic processing or the like and the shape of the inner curved surface is slightly different individually, the curved shape Regardless, it is possible to ensure the sealing performance.

  And between the valve accommodating part 12 and the cylindrical member 16, the sealing member 14, such as an O-ring, is provided in an appropriate position, and the water leakage in the valve accommodating part 12 is prevented. In the above description, the flow rate adjustment valve 20 is accommodated in the cylindrical member 16. However, the present invention is not limited to this, and when the sealing performance can be ensured, the tubular member 16 is removed and the flow rate adjustment valve 20 is accommodated in the valve. It is good also as a structure accommodated in the part 12 directly.

  The secondary side flow path 13 circulates the water that has flowed out of the flow rate adjustment valve 20. The water discharger 100 is a cylindrical tube, and is connected to the secondary side flow path 13 via the connection member 15. Therefore, when the flow rate adjustment valve 20 is opened, the water supplied from the water source is discharged from the water discharge unit 100 through the primary side flow path 11, the flow rate adjustment valve 20 and the secondary side flow path 13 ( (See arrow B in FIG. 1).

  The flow rate adjusting valve 20 includes a case portion 30 and a valve body 40 that is rotatably inserted into the case portion 30. The configurations of the case portion 30 and the valve body 40 will be described later.

  The handle 200 is connected to the shaft portion 41 of the valve body 40 in the flow rate adjustment valve 20. Therefore, when the handle 200 is rotated by the user, the valve body 40 of the flow rate adjusting valve 20 is rotated about the rotation axis A. Note that the shape of the handle 200 and the shape of the water discharger 100 shown in FIG. 1 are examples and are not limited.

  Next, the flow rate adjusting valve 20 will be described with reference to FIG. FIG. 2 is a left side view showing the flow rate adjustment valve 20 shown in FIG. 1 taken out from the valve housing portion 12, and FIG. 3 is an exploded perspective view of the flow rate adjustment valve 20. 2 and 3 show a state in which the valve body 40 is in the water stop position.

  As shown in FIG. 2, in the flow rate adjustment valve 20, the valve body 40 is inserted into the case portion 30 so that the shaft portion 41 is exposed from the upper end of the case portion 30. If it demonstrates in detail, as shown in FIG. 3, the case part 30 and the valve body 40 of the flow regulating valve 20 will be formed in a cylindrical shape.

  An insertion hole 31 into which the valve body 40 can be inserted is provided on the lower end side in FIG. Further, a through hole 32 through which the shaft portion 41 of the valve body 40 inserted from the insertion hole 31 passes is provided on the upper end side of the case portion 30 in FIG.

  The hole diameter of the insertion hole 31 is set to be the same as or substantially the same as the inner diameter of the cylindrical wall 33 of the case portion 30. Further, the hole diameter of the insertion hole 31 and the inner diameter of the cylinder wall 33 are set to be larger than the outer diameter of the cylinder wall 42 of the valve body 40.

  The diameter of the through hole 32 is set to a value that is smaller than the insertion hole 31 and does not pass through the cylindrical wall 42 of the valve body 40. Further, the hole diameter of the through hole 32 is set to be larger than the outer diameter of the shaft portion 41 of the valve body 40.

  And the flow volume adjustment valve 20 is assembled by inserting the valve body 40 in the case part 30. As shown in FIG. Specifically, the valve body 40 is inserted from the insertion hole 31 of the case portion 30 with the shaft portion 41 side as the head, and then the shaft portion 41 is passed through the through hole 32, so that the valve body 40 is inserted into the case portion 30. To be inserted. Further, since the hole diameters of the insertion hole 31 and the through hole 32 and the inner diameter of the cylindrical wall 33 are set as described above, the valve body 40 is inserted into the case portion 30 so as to be rotatable around the rotation axis A.

  4 is a cross-sectional view taken along line IV-IV of the flow regulating valve 20 shown in FIG. FIG. 4 shows a state where the valve body 40 is in the water stop position, as in FIGS. 2 and 3.

  As shown in FIGS. 3 and 4, the case portion 30 is further provided with an inflow port 34 for water inflow and an outflow port 35 for water outflow at predetermined positions in the circumferential direction of the cylindrical wall 33. Specifically, the inflow port 34 and the outflow port 35 are provided at positions that partially face the cylindrical wall 33.

  Two inflow ports 34 are provided in a portion of the cylindrical wall 33 facing the primary flow path 11. As shown in FIG. 3, each of the two inlets 34 is formed from the vicinity of the upper end to the vicinity of the lower end of the cylindrical wall 33 and is formed in a substantially rectangular shape in a side view.

  Between the two inflow ports 34, a column 33a which is a part of the cylindrical wall 33 is provided. Even when the inflow port 34 is formed from the vicinity of the upper end of the cylindrical wall 33 to the vicinity of the lower end, the strength of the case portion 30 can be ensured by the support columns 33a. In addition, the support | pillar 33a is not necessarily required, The cross-sectional area of a flow path may be increased by omitting the support | pillar 33a, and you may make it ensure a flow volume. In the above description, two inflow ports 34 are formed. However, the present invention is not limited to this, and one or three or more inflow ports 34 may be formed according to required strength and flow rate.

  One outflow port 35 is provided in a portion of the cylindrical wall 33 facing the secondary side flow path 13 and is formed in a substantially rectangular shape in a side view. The number of outlets 35 is not limited to one, and may be two or more.

  Further, a seal member 36 (shown only in FIG. 2) is attached to the outflow port 35. The seal member 36 has an opening 36a at the center, and is fixed and attached to the outflow port 35 by a fixing member (not shown).

  Thereby, the watertightness between the valve body 40 and the outflow port 35 can be ensured, and it is possible to prevent water from leaking out from the outflow port 35 at the time of water stop described later. In addition, at the time of water discharge, water flows out from the outflow port 35 through the opening 36a of the seal member 36. However, for convenience of understanding, the following description will be made assuming that the water flows out from the outflow port 35.

  Next, the valve body 40 will be described. As shown in FIGS. 3 and 4, the valve body 40 has a cylindrical shape, and an internal space 43 (see FIG. 4) surrounded by the cylindrical wall 42 is formed. A shaft portion 41 is integrally formed on the upper end side of the cylindrical wall 42 of the valve body 40 (see FIG. 3).

  The cylindrical wall 42 of the valve body 40 is provided with a blocking surface 44 and a water passage portion 45. As shown in FIGS. 2 and 4, the closing surface 44 is formed at a position where the outlet 35 is closed when the valve body 40 is in the water stop position. Thereby, when the valve body 40 exists in a water stop position, water does not flow out from the outflow port 35 (refer FIG. 4).

  As shown in FIG. 2 and FIG. 4, the water passage portion 45 is an opening formed in a plurality along the circumferential direction of the cylindrical wall 42. Details of the water flow portion 45 will be described later. The water passage 45 is not visible in FIG. 2 and only one is visible in FIG.

  When the user rotates the valve body 40 (see FIG. 4) in the water stop position via the handle 200, the plurality of water passage portions 45 rotate around the rotation axis A, and the flow of the case portion 30 is increased. It faces the inlet 34 and the outlet 35. FIG. 5 is a cross-sectional view showing the flow rate adjustment valve 20 in a state in which the valve body 40 has rotated more than 90 degrees around the rotation axis A from the water stop position.

  As shown in FIG. 5, when the plurality of water passage portions 45 in the flow rate adjustment valve 20 face both the inflow port 34 and the outflow port 35, the inflow port 34 and the internal space 43 are communicated with each other by the water passage portion 45. The internal space 43 and the outflow port 35 are communicated with each other through the water passage portion 45.

  Thereby, the water supplied from the primary side flow path 11 flows from the inflow port 34 to the outflow port 35 through the water flow part 45, the internal space 43, and the water flow part 45, and flows out to the secondary side flow path 13. (See arrow B1).

  By the way, in the conventional flow rate adjustment valve, the maximum flow rate angle until the valve body is rotated from the water stop position and the amount of water outflow is maximized is set to about 90 degrees. However, as described above, when the maximum flow rate angle is 90 degrees, there is a problem that fine flow rate adjustment is difficult because the maximum flow rate is obtained by rotation of 90 degrees.

  Even if the valve body 40 of the flow rate adjusting valve 20 is rotated by more than 90 degrees, as shown in FIG. 5, the closing surface 44 moves to the inlet 34 side and closes the inlet 34. Is blocked by the closing surface 44 as indicated by an arrow B2, and does not flow into the internal space 43, and the outflow amount of water decreases. For this reason, it is difficult to ensure the amount of water outflow according to the rotation of the valve body 40. In FIG. 5, the blocking surface 44 blocking the inflow port 34 is shown surrounded by a two-dot chain line.

  In view of this, in the flow rate adjusting valve 20 according to the embodiment, the auxiliary flow passage 50 (inflow auxiliary passage 50) that allows the valve body 40 to flow from the inlet 34 to the internal space 43 only when facing the inlet 34 according to rotation. (See FIG. 3). In FIG. 5, the flow of water that is passed from the inflow port 34 to the internal space 43 by the inflow auxiliary water passing portion 50 is indicated by a broken-line arrow B <b> 3.

  Thus, by providing the inflow auxiliary water flow section 50, it is possible to perform fine flow rate adjustment while securing the outflow amount of water corresponding to the rotation of the valve body 40. Hereinafter, the flow rate adjusting valve 20 will be described in more detail.

  Prior to detailed description of the flow rate adjusting valve 20, the maximum flow rate angle of the valve body 40 will be described with reference to FIG. FIG. 6 is a diagram for explaining the maximum flow rate angle in the flow rate adjustment valve 20. Since the valve body 40 is connected to the handle 200 and is rotated by a rotation operation of the handle 200, in FIG. 6, for convenience of understanding, the maximum flow rate angle of the valve body 40 will be described using the handle 200. To do. FIG. 6 is a view of the faucet 1 shown in FIG. 1 when viewed from above.

  In FIG. 6, the water stop position of the handle 200 (valve element 40) is indicated by a symbol P0, and the position where the flow rate of water is maximum is indicated by a symbol P4. The rotation angle range from the water stop position P0 to the position P4 where the flow rate of water is maximum is the maximum flow angle α. The positions P1, P2, and P3 shown in FIG. 6 will be described later.

  The maximum flow rate angle α can be set to an arbitrary value exceeding 90 degrees around the rotation axis A from the water stop position P0. Specifically, for example, the maximum flow angle α is preferably set to be greater than 90 degrees and less than 360 degrees, and more preferably set to 150 degrees.

  By setting the maximum flow rate angle α to, for example, 150 degrees, the rate of increase of the flow rate per unit rotation angle when the valve body 40 is rotated in the valve opening direction is reduced, so that fine flow rate adjustment can be performed. Furthermore, the effect of water saving can be expected by finely adjusting the flow rate.

  The above-described setting of the maximum flow rate angle α is performed using, for example, a stopper mechanism (not shown) provided in the case unit 30 or the handle 200, but is not limited to this, and depends on the application. The design can be changed as appropriate.

  Further, the water stop position and the rotation direction (increase direction of the flow rate) of the valve body 40 are appropriately changed in design so that the valve opening direction of the valve body 40 is clockwise or counterclockwise with respect to the rotation axis A. Therefore, the faucet 1 can be easily set to the right-handed installation and the left-handed installation. In the above description, the handle 200 is rotated on a horizontal plane. However, the present invention is not limited to this. For example, the faucet 1 is mounted by rotating it 90 degrees with respect to a mounting portion (not shown), and the handle 200 is mounted on a vertical surface. You may make it rotate by.

  Next, the inflow assist water passing portion 50 will be described with reference to FIG. 7A. FIG. 7A is a developed view in which the case portion 30 and the valve body 40 are developed around the outflow port 35. 7A shows a state where the valve body 40 is in the water stop position, as in FIG.

  As shown in FIG. 7A, the inflow auxiliary water passage 50 includes a first inflow auxiliary water passage 50a and a second inflow auxiliary water passage 50b. Here, as shown in FIG. 7A, the first and second inflow auxiliary water-permeable portions 50a and 50b and the water-permeable portion 45 are symmetric in the circumferential direction with respect to the center C of the closed surface 44 indicated by the alternate long and short dash line. It is provided as follows.

  As will be described later, the second inflow auxiliary water passing portion 50b is provided over the entire circumference of the end edge of the valve body 40. Such a configuration is also circumferential with respect to the center C of the closing surface 44. Included in symmetric configurations.

  As a result, the flow rate adjusting valve 20 rotates in the counterclockwise direction D2 (see FIG. 4) even when the valve body 40 is rotated in the clockwise direction D1 (see FIG. 4) with respect to the rotation axis A. Even in such a case, water stoppage and flow rate adjustment can be performed in the same manner. That is, the valve opening direction of the valve body 40 can be set to either the clockwise direction D1 or the counterclockwise direction D2 with respect to the rotation axis A of the valve body 40. Versatility can be improved.

  Hereinafter, one of the first and second inflow auxiliary water passing portions 50a and 50b and the water passing portion 45 formed symmetrically in the circumferential direction will be described, and such description will be described also on the other side. Valid. In the following, a case where the valve opening direction of the valve body 40 is the clockwise direction D1 will be described as an example.

  The first inflow auxiliary water flow portion 50a is an opening provided on the upper end side of the cylindrical wall 42 of the valve body 40 in FIG. 7A. The first inflow auxiliary water passing portion 50a is formed in a rectangular shape in a side view. Specifically, in the first inflow auxiliary water flow portion 50a, the circumferential direction of the valve body 40 (left and right direction in the drawing in FIG. 7A) is the longitudinal direction, and the rotation axis direction (up and down direction in the drawing in FIG. 7A) is the short direction. Formed into a rectangular shape.

  Here, the length of the inlet 34 and the outlet 35 of the case portion 30 in the rotation axis direction will be described. In the rotation axis direction, the length L1 of the inflow port 34 is formed to be longer than the length L2 of the outflow port 35 (L1> L2).

  Thus, when the valve body 40 is rotated at the end portion in the rotation axis direction of the cylindrical wall 42, the cylindrical wall 42 faces the cylindrical wall 33 of the case portion 30 without facing the outlet 35, while the inlet 34 has A facing part can be provided.

  By forming the first inflow auxiliary water flow portion 50a in such a portion, the first inflow auxiliary water flow portion 50a flows only when facing the inlet 34 according to the rotation of the valve body 40. Water can be passed from the inlet 34 to the internal space 43. In addition, the range of the circumferential direction in which the 1st inflow auxiliary | assistant water flow part 50a is provided in the cylinder wall 42 of the valve body 40 is mentioned later.

  Then, the 2nd inflow auxiliary | assistant water flow part 50b is demonstrated. First, the length of the valve body 40 in the direction of the rotation axis will be described. The length L3 of the portion facing the flow rate adjustment valve 20 in the direction of the rotation axis of the valve body 40 is greater than the length L1 of the inlet 34. Is also formed to be shorter (L3 <L1).

  Thereby, a gap is formed between the end edge of the valve body 40 and the end edge of the inflow port 34 in the direction of the rotation axis, and this gap is defined as a second inflow assisting water flow portion 50b. As a result, the second inflow auxiliary water flow portion 50 b can be made to flow from the inflow port 34 to the internal space 43.

  Thus, the 2nd inflow auxiliary water flow part 50b can be provided with the simple structure which sets the length L1, L3 of the rotating shaft direction of the inflow port 34 and the valve body 40 as mentioned above. In the example shown in FIG. 7A, the second inflow auxiliary water flow portion 50b is provided on the lower end side of the valve body 40. However, the present invention is not limited to this, and may be provided on the upper end side of the valve body 40. Good.

  Next, the water flow part 45 will be described. As shown in FIG. 4 and FIG. 7A, there are a plurality of water passage portions 45, specifically, two first water passage portions 45a and two second water passage portions 45b. .

  The 1st water flow part 45a is provided in the position which adjoins the obstruction | occlusion surface 44, and can face the inflow port 34 and the outflow port 35, when the valve body 40 is rotated. Moreover, the 1st water flow part 45a is formed in a rectangular shape in side view. Specifically, the 1st water flow part 45a is formed in the rectangular shape from which the circumferential direction of the valve body 40 becomes a longitudinal direction, and a rotating shaft direction becomes a transversal direction. Hereinafter, a section in the circumferential direction in which the first water passage portion 45a is formed in the cylindrical wall 42 of the valve body 40 is referred to as a “first section E1”.

  The 2nd water flow part 45b is provided in the opposite side to the obstruction | occlusion surface 44 with respect to the 1st water flow part 45a. In other words, the second water passage portion 45b is provided on the valve opening side of the valve body 40 with a predetermined interval from the first water passage portion 45a. The 2nd water flow part 45b is provided in the position which can face the inflow port 34 and the outflow port 35, when the valve body 40 rotates similarly to the 1st water flow part 45a.

  Moreover, the 2nd water flow part 45b is formed in a substantially rectangular shape in side view. Specifically, the 2nd water flow part 45b is formed in the rectangular shape from which the circumferential direction of the valve body 40 becomes a longitudinal direction, and a rotating shaft direction becomes a transversal direction. Further, the length of the second water passage 45b in the short direction is set to be larger than the length of the first water passage 45a in the short direction.

  Moreover, the 2nd water flow part 45b is provided with the wide part 45b1 which a width | variety spreads to the rotating shaft direction side in the center vicinity. The widened portion 45b1 is provided at a position that faces the outflow port 35 when the valve body 40 is rotated 120 degrees around the rotation axis A from the water stop position, for example. Thus, the opening area of the 2nd water flow part 45b is set so that it may become larger than the opening area of the 1st water flow part 45a.

  Even when the opening area of the second water passage 45b is relatively large as described above, the second water passage 45b and the first water passage 45a are separated by a predetermined distance. The strength of the valve body 40 can be ensured.

  The two 2nd water flow parts 45b comprised as mentioned above are provided along with the rotating shaft direction of the valve body 40. As shown in FIG. Here, in the cylindrical wall 42 of the valve body 40, a circumferential section where the second water passage 45 b is formed and located on the valve opening side of the first section E <b> 1 is referred to as a “second section E <b> 2”. I will do it.

  As described above, the opening area of the second water passage 45b formed in the second section E2 is larger than the opening area of the first water passage 45a formed in the first section E1. Such an opening area corresponds to a water flow area through which water flows in each of the water flow portions 45a and 45b. For this reason, the second water passage portion 45b of the second section E2 is a unit angle of the water passage area facing the outlet 35 when the valve body 40 rotates in the valve opening direction (here, the clockwise direction D1). The increase rate per hit is greater than the increase rate of the first water flow portion 45a in the first section E1.

  The outflow amount of the flow rate adjusting valve 20 changes according to the water flow area of each of the water flow parts 45a and 45b facing the above-described outflow port 35. Therefore, by configuring each of the water flow portions 45a and 45b as described above, the rate of increase in the amount of outflow when the valve body 40 is rotated in the valve opening direction is determined so that the first water flow portion 45a is connected to the outlet 35. It can be made different between the case where it faces and the case where the second water passage 45b faces.

  Thereby, for example, while suppressing the increase rate of the outflow amount when the first water flow portion 45a faces the outflow port 35, the second water flow portion 45b faces the outflow port 35. It is possible to increase the rate of increase of the outflow amount, and thus finer flow rate adjustment can be performed.

  Here, the range of the circumferential direction in which the 1st inflow auxiliary | assistant water flow part 50a is provided in the cylinder wall 42 of the valve body 40 is demonstrated. The first inflow auxiliary water flow portion 50a is formed at a position including at least the first section E1. Specifically, in addition to the first section E1, the first inflow auxiliary water passing portion 50a has one end in the longitudinal direction located at the upper end of the blocking surface 44, and the other end on the upper end side of the second water passing portion 45b. It is formed over the section located in the area.

  Thereby, water flows into the internal space 43 of the valve body 40 from the first inflow auxiliary water passing portion 50a, and a sufficient amount of inflow can be secured, which will be described later.

  Next, flow rate adjustment in the flow rate adjustment valve 20 will be described with reference to FIGS. 7A to 7E. FIG. 7B is a development view showing a state in which the valve body 40 is rotated 20 degrees around the rotation axis A from the water stop position. FIG. 7C is a developed view showing a state in which the valve body 40 is rotated 95 degrees around the rotation axis A from the water stop position, FIG. 7D is a state rotated by 120 degrees, and FIG. 7E is a state rotated by 150 degrees.

  In FIG. 7B to FIG. 7D, for convenience of understanding, in the water flow portion 45 and the inflow auxiliary water flow portion 50, portions that flow through the inflow port 34 are indicated by dots, and the outflow port 35 and the surface The parts that are passed through are indicated by diagonal lines. Here, the rotation angle will be described with specific numerical values, but each numerical value is merely an example and is not limited.

  As shown in FIG. 7A, when the valve body 40 is in the water stop position, the inlet 34 faces the first and second water passage portions 45a and 45b, but the blocking surface 44 is the outlet 35. The water is not drained because the water is blocked. Then, as shown in FIG. 7B, when the valve body 40 is rotated 20 degrees from the water stop position in the valve opening direction (clockwise direction D1), the first water passage portion 45a is partially formed in the outlet 35. Faces and water discharge starts. In FIG. 6, the position of the handle 200 where the valve body 40 is rotated 20 degrees from the water stop position is indicated by P1.

  When the valve body 40 is rotated in the valve opening direction beyond 20 degrees, the water flow area of the first water flow portion 45a facing the outflow port 35 increases, and the flow rate increases accordingly. . Here, although the water passage area and the flow rate are increased, the water flow area and the flow rate are not necessarily increased. For example, when the valve body 40 is rotated in the valve opening direction, the water flow area and the flow rate are maintained. May be. In addition, the expression “increase” used in the following is also used in the sense of including the water flow area and flow rate maintained.

  Furthermore, as shown in FIG. 7C, the valve body 40 is rotated in the valve opening direction and is rotated from 90 degrees to 95 degrees beyond the water stop position (see position P2 in FIG. 6). At this time, the second water passage portion 45b partially faces the outflow port 35. Thereby, in the water flow part 45, the increase rate of the water flow area which faces the outflow port 35 when the valve body 40 rotates in the valve opening direction is increased, and the outflow amount is also greatly increased accordingly. Become.

  Further, when the valve body 40 is rotated more than 90 degrees from the water stop position, the closing surface 44 of the valve body 40 moves toward the inlet 34 and closes the inlet 34. However, since the valve body 40 is formed with the first and second inflow auxiliary water passing portions 50a and 50b, water flows from the inlet 34 through the inflow auxiliary water passing portions 50a and 50b to the valve body 40. It will flow into the internal space 43. Thereby, the inflow amount can be sufficiently secured.

  Subsequently, as shown in FIG. 7D, the valve body 40 is further rotated in the valve opening direction and rotated from the water stop position to 120 degrees (see position P3 in FIG. 6). At this time, the widened portion 45b1 of the second water passage portion 45b partially faces the outlet port 35. Thereby, in the water flow part 45, the increase rate of the water flow area which faces the outflow port 35 in case the valve body 40 rotates to a valve opening direction becomes still larger, and the outflow amount increases also in connection with it.

  Next, as shown in FIG. 7E, the valve body 40 is further rotated in the valve opening direction and rotated from the water stop position to 150 degrees (see position P4 in FIG. 6). At this time, the valve body 40 has a maximum flow rate angle, and the widened portion 45b1 of the second water passage portion 45b faces the outflow port 35 entirely. Thereby, in the water flow part 45, the increase rate of the water flow area facing the outflow port 35 when the valve body 40 rotates in the valve opening direction is further increased, and the outflow amount is further increased accordingly. The maximum flow rate is reached.

  As shown in FIG. 7E, when the second water passage 45b in the second section E2 faces the outlet 35, the first water passage 45a in the first section E1 faces the inlet 34. Will be. At this time, the water flow area on the inlet 34 side becomes smaller than the water flow area on the outlet 35 side, and there is a possibility that the inflow amount cannot be secured. However, as described above, since the first inflow auxiliary water flow portion 50a is formed at a position including at least the first section E1, water flows through the first inflow auxiliary water flow portion 50a. It flows into the internal space 43 of 40, Therefore Inflow amount can fully be ensured.

  As described above, for example, when the valve body 40 is at a low opening from the water stop position to about 90 degrees, the rate of increase in the outflow amount is such that the first water passage 45a faces the outflow port 35. Suppress. Further, when the valve body 40 is at a medium opening from 90 degrees to 120 degrees, the second water passage 45b faces the outlet 35, and the valve body 40 has a high opening from 120 degrees to 150 degrees. In some cases, the widening portion 45b1 faces the outflow port 35, and the rate of increase in the outflow amount is increased stepwise. As a result, the user can perform finer flow rate adjustment.

  As described above, the flow rate adjustment valve 20 according to the embodiment includes the case portion 30 and the valve body 40. The case portion 30 is formed in a cylindrical shape and has an inflow port 34 and an outflow port 35 provided at predetermined positions in the circumferential direction of the cylindrical wall 33. The valve body 40 is formed in a cylindrical shape, and is rotatably inserted into the case portion 30.

  The valve body 40 includes a water flow portion 45 and an inflow assist water flow portion 50. The water passage portion 45 allows water to flow from the inlet 34 to the outlet 35 through the internal space 43 when facing the inlet 34 and outlet 35 according to the rotation. The inflow auxiliary water passage 50 allows water to flow from the inflow port 34 to the internal space 43 only when facing the inflow port 34 according to rotation. Thereby, fine flow rate adjustment can be performed while ensuring the outflow amount of water corresponding to the rotation of the valve body 40.

  In addition, according to the faucet 1 according to the embodiment, by providing the flow rate adjustment valve 20, it is possible to perform fine flow rate adjustment while securing the outflow amount of water corresponding to the rotation of the valve body 40.

  In the above-described embodiment, the number of the first and second water flow portions 45a and 45b is two. However, these numbers are illustrative and are not limited to one or three. It may be more than one.

  Moreover, in the above, although the shape of the 1st, 2nd water flow parts 45a and 45b was made into the rectangular shape in the side view, this is an illustration and is not limited. That is, for example, the first and second water passage portions 45a and 45b are made into one water passage portion, and the water passage area increases in such a water passage portion toward the valve opening direction such as stepped or tapered. You may make it form in various shapes. Furthermore, you may comprise so that the number of water flow parts may be increased as it progresses in the valve opening direction.

  In the above description, the faucet 1 provided with the flow rate adjusting valve 20 is a single faucet. However, the present invention is not limited to this. In the case of a hot and cold water mixing faucet, both a water supply handle and a hot water supply handle are provided, and a flow rate adjusting valve 20 is attached to each handle. Then, the water whose flow rate is adjusted by the flow rate adjusting valve 20 attached to the water supply handle and the hot water whose flow rate is adjusted by the flow rate adjusting valve 20 attached to the hot water supply handle are mixed and discharged from the water discharge portion. You may comprise.

  Further effects and modifications can be easily derived by those skilled in the art. Thus, the broader aspects of the present invention are not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications can be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 Water faucet 20 Flow control valve 30 Case part 33 Cylinder wall 34 Inlet 35 Outlet 40 Valve body 41 Shaft part 43 Internal space 44 Blocking surface 45 Water passing part 45a First water passing part 45b Second water passing part 50 Inflow auxiliary water passing portion 50a First inflow auxiliary water passing portion 50b Second inflow auxiliary water passing portion 200 Handle E1 First section E2 Second section

Claims (6)

A case portion having an inflow port for water inflow and an outflow port for water outflow provided at a predetermined position in the circumferential direction on the cylindrical wall while being formed in a cylindrical shape,
A valve body that is formed in a cylindrical shape and is rotatably inserted into the case portion ;
With
A water passage section for passing water from the inlet to the outlet through the internal space of the valve body when facing the inlet and the outlet according to rotation;
An inflow auxiliary water passing portion that allows water to flow from the inlet to the internal space only when facing the inlet according to rotation ,
The flow control valve, wherein the inflow auxiliary water flow portion is disposed at a position shifted in a direction of a rotation axis of the valve body with respect to the outflow port . The water flow part is
Formed over a first section in the circumferential direction of the cylindrical wall of the valve body and a second section located on the valve opening side of the first section,
The water flow section of the second section is
The rate of increase of the water flow area facing the outlet when the valve body rotates in the valve opening direction is formed to be greater than the rate of increase of the water flow portion in the first section. The flow regulating valve according to claim 1, wherein The inflow auxiliary water flow section is
The flow regulating valve according to claim 2, wherein the flow regulating valve is formed at a position including at least the first section of the valve body. The valve body is
The length of the portion facing the inlet in the rotation axis direction is formed to be shorter than the length of the inlet,
The inflow auxiliary water flow section is
The flow rate adjusting valve according to any one of claims 1 to 3, wherein the flow rate adjusting valve is a gap formed between an end edge of the valve body and an end edge of the inflow port in a rotation axis direction. The valve body is
A blocking surface for blocking the outlet when in the water stop position,
The water flow portion and the inflow auxiliary water flow portion are:
It is provided so that it may become symmetrical in the circumferential direction with respect to the center of the said obstruction | occlusion surface. The flow regulating valve as described in any one of Claims 1-4 characterized by the above-mentioned. A water faucet comprising the flow rate adjusting valve according to claim 1.

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