Rotary water flow control valve core with push switch, shower device, shower control device, and faucet

Abstract

This invention provides a rotary water flow control valve core with a push switch that improves the accuracy and stability of flow control. [Solution] The pressing operation unit is used to move the central rod and the first seal unit between a first position and a second position. When the central rod and the first seal unit are in the first position, the first seal unit seals the communication between the first flow path and the water supply hole, and the central rod engages with the second seal unit to close the second flow path. When the central rod and the first seal unit are in the second position, the first seal unit opens the communication between the first flow path and the water supply hole, the engagement between the central rod and the second seal unit is released, and the second flow path is opened. The rotation adjustment unit is used to adjust the flow rate of the first flow path by controlling the movement of the first seal unit between the second position and a third position via an interlocking control mechanism when the central rod is in the second position.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary bathroom products, and particularly to a rotary water flow regulating valve core with a push switch, a shower device, a shower control device, and a faucet that can open and close water flow and adjust the flow rate.

Background Art

[0002] Conventional push valve core switches can realize two functions: opening and closing the water flow by pressing operation and adjusting the flow rate by rotating operation. However, the flow rate adjustment function by rotating operation lacks stability, and there is a problem that the individual variation of the minimum flow rate is large.

Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide a rotary water flow regulating valve core with a push switch that improves the flow control accuracy and stability.

[0004] To solve the above technical problems, the rotary water flow regulating valve core with a push switch provided by the present invention includes a valve body, a push operation part, a rotary adjustment part, and a center rod. The valve body includes a water inlet, a water outlet, and a first flow path and a second flow path that communicate the water inlet and the water outlet. At different positions in the valve body, a first seal part and a second seal part are installed. The push operation part is used to move the center rod and the first seal part between a first position and a second position. When the center rod and the first seal part are located at the first position, the first seal part seals the first flow path, and the center rod fits with the second seal part to close the second flow path. When the center rod and the first seal part are located at the second position, the first seal part opens the first flow path, the fitting between the center rod and the second seal part is released, and the second flow path is opened. The rotation adjustment unit is used to adjust the water discharge flow rate of the first flow path by controlling the movement of the first seal portion between the second and third positions using an interlocking control mechanism when the central rod and the first seal portion are in the second position. When the third position is between the second and first positions, and the central rod and the first seal portion are in the third position, the first seal portion seals the first flow path, and the second flow path maintains communication with the water supply hole.

[0005] In a preferred embodiment, the first sealing portion is a pilot valve and comprises a pilot valve seat and a diaphragm fixed to the pilot valve seat.

[0006] In a preferred embodiment, the pilot valve is provided with a water supply port and a pressure reducing hole through which the central rod passes, and the pilot valve and the valve body constitute a pressure chamber. The interlocking control mechanism controls the movement of the central rod relative to the pressure relief hole, thereby adjusting the size of the pressure relief hole and adjusting the pressure inside the pressure chamber, which moves the pilot valve between the second position and the third position due to the pressure difference inside and outside the pressure chamber.

[0007] In a preferred embodiment, the central rod is provided with a first portion and a second portion, the second portion having a larger diameter than the first portion. When the central rod is in the first position, the second portion is located inside the pressure relief hole and seals the pressure relief hole, and the diaphragm seals the first flow path due to the pressure action inside the pressure chamber. When the central rod is in the second position, the first portion is located inside the pressure relief hole and opens the pressure relief hole, and the diaphragm opens the first flow path due to the pressure action outside the pressure chamber.

[0008] In a preferred embodiment, the interlocking control mechanism is a guide base, and when the central rod is in a second position, the guide base is fitted to the central rod in an interlocking manner. The guide base is fitted to the rotation adjustment unit in a direction-changing manner, thereby converting the rotation of the rotation adjustment unit into movement of the central rod from a second position to a third position.

[0009] In a preferred embodiment, the central rod further has a transition section between the first and second portions, wherein the diameter of the transition section gradually increases from the end adjacent to the first portion toward the other end. As the central rod moves from the second position to the third position, the transition portion enters the depressurization hole, gradually reducing the water-permeable area of ​​the depressurization hole. When the central rod moves to the third position, the second portion is located inside the depressurization hole and seals it, and the diaphragm seals the first flow path due to the pressure action within the pressure chamber.

[0010] In a preferred embodiment, the guide base has a relief opening through which the pressing operation portion passes, the inner wall of the relief opening extends radially inward to form a stopper surface, the upper end of the central rod extends radially outward to form a stopper fitting surface, and when the central rod is in a second position, the stopper surface abuts and fits with the stopper fitting surface.

[0011] In a preferred embodiment, the rotation adjustment portion is fitted to the outside of the guide base, and the guide base extends outward along the radial direction to form lugs that abut and fit against the lower end surface of the rotation adjustment portion, and the lower end surface of the rotation adjustment portion is an inclined surface that gradually rises along the direction of rotation, and when the lugs move to the highest position on the inclined surface, the central rod is in a second position, and when the lugs move to the lowest position on the inclined surface, the central rod is in a third position.

[0012] In a preferred embodiment, the rotation adjustment unit moves the pilot valve between a second position and a third position by acting directly on the pilot valve via an interlocking control mechanism.

[0013] In a preferred embodiment, the interlocking control mechanism is an adjustment base, and the adjustment base is reversibly fitted with a rotation adjustment unit, thereby converting the rotation of the rotation adjustment unit into movement of the adjustment base from a second position to a third position.

[0014] In a preferred embodiment, the pilot valve and the valve body constitute a pressure chamber. The adjustment base has a protruding column that extends into the pressure chamber, and when the adjustment is moved by the rotation of the rotation adjustment unit, the protruding column moves the pilot valve between a second position and a third position, thereby adjusting the discharge flow rate of the first flow path.

[0015] In a preferred embodiment, the adjustment base has lugs that extend radially outward and abut against and fit with the lower end surface of the rotation adjustment portion, the lower end surface of the rotation adjustment portion is an inclined surface that gradually rises along the direction of rotation, the diaphragm is in a second position when the lugs move to the highest position on the inclined surface, and the diaphragm is in a third position when the lugs move to the lowest position on the inclined surface.

[0016] In a preferred embodiment, the adjustment base abuts against the adjustment spring, and the adjustment spring accumulates an elastic restoring force as the adjustment base moves from a second position to a third position.

[0017] In a preferred embodiment, the second flow path is located below the first flow path, and a third portion is further provided at the end of the central rod that is away from the second portion relative to the first portion, and a first seal ring is provided on the inner wall of the second flow path as a second seal portion, and when the central rod is in the first position, the third portion is tightly fitted with the first seal ring.

[0018] In a preferred embodiment, the second flow path is provided with the pressure relief hole.

[0019] In a preferred embodiment, the pilot valve seat is provided with the second flow path, and a relief opening is provided at a position corresponding to the outlet of the second flow path of the diaphragm.

[0020] In a preferred embodiment, the pilot valve seat is provided with a first relief passage through which the central rod passes, and a sealing member is provided on the inner wall of the first relief passage as the second sealing portion.

[0021] In a preferred embodiment, the central rod is provided with a first portion and a second portion, the second portion having a larger diameter than the first portion. When the central rod is in the first position, the second portion is located inside the pressure relief hole and seals the pressure relief hole, the diaphragm seals the first flow path by the pressure action inside the pressure chamber, and the second portion engages with the sealing member to close the second flow path. When the central rod is in the second position, the first portion is located inside the pressure relief hole and opens the pressure relief hole, the diaphragm opens the first flow path by the pressure action outside the pressure chamber, the engagement between the second portion and the sealing member is released, and the second flow path is opened.

[0022] In a preferred embodiment, the pressing operation part comprises a handle lever with a boss fixed inside, and a water-conducting spring fitted to the outside of the central rod. The handle lever is positioned in a high or low position by an external force. When the handle lever is in the low position, the boss is pressed against the central rod, moving the central rod to a first position. The central rod compresses the water-conducting spring, accumulating elastic restoring force. When the handle lever is in the high position, the boss detaches from the central rod, and the central rod moves to a second position due to the restoring force of the water-conducting spring.

[0023] In a preferred embodiment, a groove is provided on the side surface of the handle lever, and a protrusion that engages with the groove is provided on the rotation adjustment part, so that the handle lever and the rotation adjustment part are fitted together so as to be able to move in conjunction in the rotational direction.

[0024] In a preferred embodiment, the valve body includes a housing that surrounds the outside of the rotation adjustment part. A first stopper boss is installed in the housing along the rotation path of the rotation adjustment part. A second stopper boss corresponding to the first stopper boss is installed in the rotation adjustment part. The first stopper boss and the second stopper boss are used to limit the rotation range of the rotation adjustment part.

[0025] The present invention further provides a shower device including a shower rail, a ceiling shower head, a hand shower head, and the above-described rotary water flow rate adjustment valve core with a push switch.

[0026] The present invention further provides a shower control device including a temperature adjustment valve core to which a cold water flow path and a hot water flow path are connected to discharge mixed water. Downstream of the temperature adjustment valve core, the above-described rotary water flow rate adjustment valve core with a push switch is further attached.

[0027] The present invention further provides a faucet to which the above-described rotary water flow rate adjustment valve core with a push switch is assembled.

Advantages of the Invention

[0028] Compared with the prior art, the technical form of the present invention has the following beneficial effects. In the rotary water flow rate adjustment valve core with a push switch provided by the present invention, by installing a second flow path, in the flow rate adjustment by rotation operation, the size of the first flow path can be adjusted by rotation operation. The second flow path is always open and maintained in a state where the flow rate cannot be adjusted, and the two water flows merge and are discharged. Thereby, the minimum flow rate of the product is determined by the second flow path. When the first flow path is adjusted by rotation operation so that the flow rate of the first flow path becomes zero, the minimum flow rate of the valve core becomes the flow rate of the second flow path, and the flow rate is stable. Thereby, even in the case of mass production, the minimum flow rate value of the product is accurately controlled within a narrow flow rate range, and the flow rate control accuracy and stability of the product are improved.

Brief Description of the Drawings

[0029] [Figure 1] This is a perspective view of a rotary water flow control valve core with a push switch according to a preferred embodiment 1 of the present invention. [Figure 2] This is an exploded view of a rotary water flow control valve core with a push switch according to a preferred embodiment 1 of the present invention. [Figure 3] This is a cross-sectional view of a rotary water flow control valve core with a push switch according to a preferred embodiment 1 of the present invention. [Figure 4] This is a cross-sectional view of the central rod at a second position in a preferred embodiment 1 of the present invention. [Figure 5] This is a cross-sectional view of the central rod at a third position in a preferred embodiment 1 of the present invention. [Figure 6] This is a cross-sectional view of the central rod at a first position in a preferred embodiment 1 of the present invention. [Figure 7] This is an exploded view of a rotary water flow control valve core with a push switch according to a preferred embodiment 2 of the present invention. [Figure 8] This is a cross-sectional unfolded view of a rotary water flow control valve core with a push switch according to a preferred embodiment 2 of the present invention. [Figure 9] This is a cross-sectional view of the central rod at a second position in a preferred embodiment 2 of the present invention. [Figure 10] This is a cross-sectional view of the central rod at a third position in a preferred embodiment 2 of the present invention. [Figure 11] This is a cross-sectional view of the central rod at the first position in a preferred embodiment 2 of the present invention. [Figure 12] This is a cross-sectional view of the central rod at the second position in a preferred embodiment 3 of the present invention. [Figure 13] This is a cross-sectional view of the central rod at a third position in a preferred embodiment 3 of the present invention. [Figure 14] This is a cross-sectional view of the central rod at the first position in a preferred embodiment 3 of the present invention. [Figure 15] This is a cross-sectional view of a pilot valve according to a preferred embodiment 3 of the present invention. [Figure 16]This is a schematic diagram of a shower device according to a preferred embodiment 3 of the present invention. [Figure 17] This is a schematic diagram of the waterway of a shower control device according to a preferred embodiment 4 of the present invention. [Figure 18] This is a schematic diagram of a shower control device according to a preferred embodiment 4 of the present invention. [Figure 19] This is a schematic diagram of a fixed faucet according to preferred embodiment 5 of the present invention. [Figure 20] This is a schematic diagram of a pull-out faucet according to a preferred embodiment 5 of the present invention. [Modes for carrying out the invention]

[0030] The technical modes of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments. It is clear that the embodiments described are only a subset of the embodiments of the present invention, not all embodiments, and that all other embodiments obtained by those skilled in the art without requiring any creative work based on the embodiments of the present invention fall within the scope of the protection of the present invention.

[0031] In the description of this invention, the directions or positional relationships indicated by terms such as "up," "down," "inside," "outside," and "top / bottom" are based on the directions or positional relationships shown in the drawings and are merely for the convenience and simplification of the description of this invention. They do not express or suggest that the valve cores or components mentioned must necessarily have a particular direction or be configured and operated in a particular direction, and should not be understood as limitations to this invention. Furthermore, terms such as "first" and "second" are used merely for illustrative purposes and should not be understood as expressing or suggesting relative importance.

[0032] In the description of this invention, unless otherwise specified or limited, terms such as “attach,” “install,” “fit / connect,” and “connect” should be interpreted broadly. For example, “connection” may be a wall-mounted connection, a detachable connection, or an integrated connection; it may be a mechanical connection or an electrical connection; it may be a direct connection, an indirect connection via an intermediate medium, or internal communication between two components. Those skilled in the art will be able to understand the specific meaning of the above terms in this invention depending on the specific situation.

[0033] Example 1 Referring to Figures 1 to 6, the rotary water flow control valve core with a push switch provided in this embodiment comprises a valve body 1, a push operation part 2, a rotation adjustment part 3, and a central rod 4.

[0034] The valve body 1 includes a water supply port 11, a water outlet 12, and a first flow path 13 and a second flow path 14 that connect the water supply port 11 and the water outlet 12.

[0035] A first seal portion and a second seal portion are installed at different positions within the valve body 1. The pressing operation portion 2 is used to move the central rod 4 and the first seal portion between a first position and a second position. When the central rod 4 and the first seal portion are in the first position, the first seal portion seals the first passage 13, and the central rod 4 engages with the second seal portion to seal the second passage 14. When the central rod 4 and the first seal portion are in the second position, the first seal portion opens the first passage 13, the engagement between the central rod 4 and the second seal portion is released, and the second passage 14 opens.

[0036] The rotation adjustment unit is used to adjust the water discharge flow rate of the first flow path 13 by controlling the movement of the first seal portion between the second and third positions using an interlocking control mechanism when the central rod 4 and the first seal portion are in the second position. The third position is between the second and first positions. In the process of the rotation adjustment unit controlling the movement of the first seal portion between the second and third positions using an interlocking control mechanism, the first seal portion has 1, 2, 3, 4, 5..., n positions, and can be stopped at any of these n positions by the control of the rotation adjustment unit. The water discharge flow rate of the first flow path 13 changes according to the different positions where the first seal portion stops, thereby achieving stepless adjustment of the flow rate. When the central rod 4 and the first seal portion are in the third position, the first seal portion seals the first flow path 13, and the second flow path 14 maintains communication with the water supply hole 11.

[0037] In the rotary water flow control valve core with a push switch described above, by installing a second flow path 14, the size of the first flow path 13 can be adjusted by the rotation operation during flow control by rotation, and the second flow path 14 is kept open at all times and in a state where flow control is not possible, so that the two water flows merge and are discharged. As a result, the minimum flow rate of the product is determined by the second flow path 14. When the first flow path 13 is adjusted by the rotation operation so that the flow rate of the first flow path 13 becomes zero, the minimum flow rate of the valve core becomes the flow rate of the second flow path 14, and the flow rate is stable. As a result, even in mass production, the minimum flow rate of the product is accurately controlled within a narrow flow rate range, improving the accuracy and stability of product flow control.

[0038] To enable the opening and closing of the water flow, the first sealing part is a pilot valve and comprises a pilot valve seat 15 and a diaphragm 16 fixed to the pilot valve seat 15. The second sealing part is a first sealing ring 141 installed in the second flow path 14. The pilot valve is provided with a pressure reducing hole 161 through which the central rod 4 passes, and a water supply port 162 having a smaller diameter than the pressure reducing hole 161. The intermediate base 18 of the pilot valve and the valve body 1 constitute a pressure chamber 163. The central rod 4 is provided with a first portion 41 and a second portion 42, the second portion 42 having a larger diameter than the first portion 41.

[0039] When the central rod 4 is in the first position, the second portion 42 is located inside the pressure reducing hole 161 and seals the pressure reducing hole 161, allowing external water to flow into the pressure chamber 163 through the water supply port 162, increasing the pressure inside the pressure chamber 163. The pilot valve moves downward due to the pressure action inside the pressure chamber 163. The downward movement of the pilot valve seat 15 deforms the diaphragm 16 downward, sealing the first flow path 13 and achieving water closure of the first flow path 13. When the central rod 4 is in the second position, the first portion 41 is located inside the pressure reducing hole 161. Because the diameter of the first portion 41 is small, a gap exists between the first portion 41 and the pressure reducing hole 161, causing the pressure reducing hole 161 to open, allowing water from the pressure chamber 163 to flow out of the pressure reducing hole 161, reducing the water pressure inside the pressure chamber 163, and causing the pressure outside the pressure chamber 163 to exceed the pressure inside the pressure chamber 163. In this case, the pilot valve moves upward due to the pressure outside the pressure chamber 163, deforming the diaphragm 16 fixed to the pilot valve seat 15 upward, releasing the seal on the first flow path 13, and enabling water to flow through the first flow path 13.

[0040] Furthermore, in this embodiment, the second flow path 14 is located below the first flow path 13. When the pilot valve moves downward, the diaphragm 16 fixed to the pilot valve seat 15 is deformed downward to seal the first flow path 13, without affecting the communication of the second flow path 14, and ensuring that the second flow path 14 remains open at all times for flow rate adjustment.

[0041] When the central rod 4 is in the first position, a third portion 43 is further provided at the end of the central rod 4 that is away from the second portion 42 relative to the first portion 41, and a first seal ring 141 is provided on the inner wall of the second flow path 14. When the central rod 4 is in the third position, the third portion 43 is away from the first seal ring 141, so the second flow path 14 is open. When the central rod 4 continues to move downward from the third position to the first position, the third portion fits tightly with the first seal ring 141, closing the second flow path 14 and achieving watertight sealing of the entire valve core.

[0042] To operate the water flow on and off, the central rod 4 must be moved from a first position to a second position, or from a second position to a first position, by the pressing operation unit 2. Specifically, the pressing operation unit 2 is equipped with a handle lever 21, and a boss 22 is fixedly installed on the handle lever 21. A water-conducting spring 45 is fitted to the outside of the central rod 4.

[0043] The handle lever 21 is positioned in a high or low position by an external force. When the handle lever 21 is in the low position, the boss 22 is pressed against the central rod 4, moving the central rod 4 to a first position, which in turn compresses the water-conducting spring 45 and accumulates elastic restoring force. When the handle lever 21 is in the high position, the boss 22 detaches from the central rod 4, and the central rod 4 moves to a second position due to the restoring force of the water-conducting spring 45. In order to restore the handle lever 21, it is also necessary to connect a restoring spring 23 to the handle lever 21, so that when the handle lever 21 is in the low position, the restoring spring 23 accumulates elastic restoring force.

[0044] The structure described above can perform water shutoff and water flow operations. In order to perform flow rate adjustment operations in the water flow state, it is necessary to employ a rotation adjustment unit 3 and an interlocking control mechanism, and in this embodiment, the interlocking control mechanism is the guide base 5. When the central rod 4 is in the second position, the guide base 5 and the central rod 4 are interlockingly fitted together along the direction from the second position to the third position. The guide base 5 is reversibly fitted with the rotation adjustment unit 3, thereby converting the rotation of the rotation adjustment unit 3 into movement of the central rod 4 from the second position to the third position. Thus, the guide base 5 plays the role of converting the rotation of the rotation adjustment unit 3 into axial movement of the central rod 4 through its reversibly fitted connection with the rotation adjustment unit 3. As a result, when the central rod 4 is in the second position, the guide base 5 and the central rod 4 can be interlockingly fitted together along the direction from the second position to the third position. The user can move the central rod 4 along the direction from the second position to the third position simply by rotating the rotation adjustment unit 3.

[0045] To achieve flow rate control, the discharge rate of the first flow path 13 must be gradually reduced during the process of the central rod 4 moving from a second position to a third position. Therefore, a transition section 44 is further installed between the first portion 41 and the second portion 42 of the central rod 4. As the diameter of the transition section 44 gradually increases from the end adjacent to the first portion 41 to the other end, the transition section 44 gradually enters the pressure reducing hole 161 during the process of the central rod 4 moving from the second position to the third position, and the water-passing area of ​​the pressure reducing hole 161 gradually decreases. As a result, the pressure in the pressure chamber 163 gradually increases again, moving the pilot valve downward and deforming the diaphragm 16 downward, which in turn shortens the distance between the diaphragm 16 and the first flow path 13, and consequently reduces the discharge flow rate. When the central rod 4 moves to the third position, the second portion 42 is located inside the pressure relief hole 161 and seals the pressure relief hole 161, and the diaphragm 16 seals and closes the first flow path 13 due to the pressure action in the pressure chamber 163. In this case, only the second flow path 14 is discharged, the minimum flow rate of the valve core is achieved, and the flow rate is stable.

[0046] In this embodiment, since the guide base 5 is installed on the outside of the central rod 4, a relief opening 51 is provided at the top of the guide base 5 for the pressing operation part 2 to pass through, in order to allow the boss 22 to penetrate the guide base 5 and contact the central rod 4. The inner wall of the relief opening 51 extends inward along the radial direction to form a stopper surface 52, and the upper end of the central rod 4 extends outward along the radial direction to form a stopper fitting surface 46. When the central rod 4 is in the second position, the stopper surface 52 abuts and fits with the stopper fitting surface 46. As a result, when the water-conducting spring 45 releases its elastic restoring force, the upward movement position of the central rod 4 is limited by the stopper surface 52 and the stopper fitting surface 46, and the central rod 4 can be accurately restored to the second position.

[0047] In order to achieve a reversible fitting between the rotation adjustment unit 3 and the guide base 5, in this embodiment, the rotation adjustment unit 3 is fitted to the outside of the guide base 5. The guide base 5 extends outward along the radial direction, forming lugs 53 that abut and fit with the lower end surface of the rotation adjustment unit 3, and the lower end surface of the rotation adjustment unit 3 is an inclined surface 31 that gradually rises along the direction of rotation. As a result, when the rotation adjustment unit 3 rotates relative to the guide base 5, the lugs 53 of the guide base 5 move to different positions on the inclined surface 31. For example, when the lugs 53 move to the highest position on the inclined surface 31, the central rod 4 is in a second position, and when the lugs 53 move to the lowest position on the inclined surface 31, the central rod 4 is in a third position. As the lug portion 53 moves from the highest position to the lowest position on the inclined surface 31, a pressing force is generated between the inclined surface 31 and the lug portion 53, causing the guide base 5 to move downward. At this time, the guide base 5 drives the central rod 4 to compress the water-conducting spring 45. As the lug portion 53 moves from the lowest position to the highest position on the inclined surface 31, the water-conducting spring 45 releases its elastic restoring force, causing the guide base 5 and the central rod 4 to move upward.

[0048] To form the pressure chamber 163 described above, the valve body 1 further comprises an intermediate base 18. The intermediate base 18 and the diaphragm 16 define the pressure chamber 163. The intermediate base 18 is provided with a second relief passage 181 through which the central rod 4 passes. A second seal ring 182 that fits with the central rod 4 is provided on the inner wall of the second relief passage 181. As a result, when the central rod 4 passes through the second relief passage 181, water leakage is prevented by the sealed fit of the second seal ring 182. Similarly, the pilot valve seat 15 is also provided with a first relief passage 151 through which the central rod 4 passes.

[0049] In the structure described above, the water flow is opened and closed by pressing the handle lever 21, and the flow rate is adjusted by rotating the rotation adjustment unit 3. This requires pressing and rotating operations on different parts of the valve core, which is inconvenient to use. Therefore, in this embodiment, a groove 211 is provided on the side surface of the handle lever 21, and a protrusion 312 that fits into the groove 211 is provided on the rotation adjustment unit 3, so that the handle lever 21 and the rotation adjustment unit 3 can be fitted together in a manner that allows them to rotate in conjunction. As a result, by rotating the handle lever 21, the rotation adjustment unit 3 can also be rotated, and all user operations can be performed with a single handle lever 21.

[0050] Finally, to limit the rotation range of the rotation adjustment unit 3, the valve body 1 includes a housing 17 that surrounds the outside of the rotation adjustment unit 3. The housing 17 is provided with a first stopper boss 171 along the rotation path of the rotation adjustment unit 3. The rotation adjustment unit 3 is provided with a second stopper boss 32 corresponding to the first stopper boss 171. The first stopper boss 171 and the second stopper boss 32 are used to limit the rotation range of the rotation adjustment unit 3. As a result, when the rotation adjustment unit 3 rotates until it is pressed against the first stopper boss 171 and the second stopper boss 32, the rotation adjustment unit 3 stops rotating along its current direction of rotation.

[0051] Example 2 In this embodiment, the same reference numerals are used for the same components as in Embodiment 1, and are specifically noted here.

[0052] Referring to Figures 7 to 11, the rotary water flow control valve core with a push switch provided in this embodiment comprises a valve body 1, a push operation part 2, a rotation adjustment part 3, and a central rod 4.

[0053] The valve body 1 includes a water supply hole 11, a water outlet 12, a first flow path 13 and a second flow path 14 that connect the water supply hole 11 and the water outlet 12.

[0054] A first seal portion and a second seal portion are installed at different positions within the valve body 1. The pressing operation portion 2 is used to move the central rod 4 and the first seal portion between a first position and a second position. When the central rod 4 and the first seal portion are in the first position, the first seal portion seals the first passage 13, and the central rod 4 engages with the second seal portion to seal the second passage 14. When the central rod 4 and the first seal portion are in the second position, the first seal portion opens the first passage 13, the engagement between the central rod 4 and the second seal portion is released, and the second passage 14 opens.

[0055] The rotation adjustment unit is used to adjust the water discharge flow rate of the first flow path 13 by controlling the movement of the first seal portion between the second and third positions using an interlocking control mechanism when the central rod 4 is in the second position. The third position is located between the second and first positions. In the process of the rotation adjustment unit controlling the movement of the first seal portion between the second and third positions using an interlocking control mechanism, the first seal portion has 1, 2, 3, 4, 5..., n positions, and can be stopped at any of these n positions by the control of the rotation adjustment unit. The water discharge flow rate of the first flow path 13 changes according to the different positions where the first seal portion stops, thereby achieving stepless adjustment of the flow rate. When the first seal portion is in the third position, the first seal portion seals the first flow path 13, and the second flow path 14 remains in communication.

[0056] In the rotary water flow control valve core with a push switch described above, by installing a second flow path 14, the size of the first flow path 13 can be adjusted by the rotation operation during flow control by rotation, and the second flow path 14 is kept open at all times and in a state where flow control is not possible, so that the two water flows merge and are discharged. As a result, the minimum flow rate of the product is determined by the second flow path 14. When the first flow path 13 is adjusted by the rotation operation so that the flow rate of the first flow path 13 becomes zero, the minimum flow rate of the valve core becomes the flow rate of the second flow path 14, and the flow rate is stable. As a result, even in mass production, the minimum flow rate of the product is accurately controlled within a narrow flow rate range, improving the accuracy and stability of flow control.

[0057] To enable the opening and closing of the water flow, the first sealing portion is a pilot valve and comprises a pilot valve seat 15 and a diaphragm 16 fixed to the pilot valve seat 15. The diaphragm 16 is provided with a pressure-reducing hole 161 through which the central rod 4 passes, and a water supply port 162 having a smaller diameter than the pressure-reducing hole 161. The intermediate base 18 between the pilot valve and the valve body 1 constitutes a pressure chamber 163. The central rod 4 is provided with a first portion 41 and a second portion 42, the second portion 42 having a larger diameter than the first portion 41.

[0058] When the central rod 4 is in the first position, the second portion 42 is located inside the pressure relief hole 161 and seals the pressure relief hole 161, allowing external water to flow into the pressure chamber 163 through the water supply port 162, increasing the pressure inside the pressure chamber 163. The pilot valve moves downward due to the pressure action inside the pressure chamber 163, deforming the diaphragm 16 downward, sealing the first passage 13, and achieving water closure of the first passage 13. When the central rod 4 is in the second position, the first portion 41 is located inside the pressure relief hole 161. Because the diameter of the first portion 41 is small, a gap exists between the first portion 41 and the pressure relief hole 161, causing the pressure relief hole 161 to open, allowing water from the pressure chamber 163 to flow out of the pressure relief hole 161, reducing the water pressure inside the pressure chamber 163, and causing the pressure outside the pressure chamber 163 to exceed the pressure inside the pressure chamber 163. In this case, the pilot valve moves upward due to the pressure outside the pressure chamber 163, deforming the diaphragm 16 upward, releasing the seal on the first flow path 13, and allowing water to flow through the first flow path 13.

[0059] Furthermore, in this embodiment, the communication point between the second flow path 14 and the water supply hole 11 is the pressure reducing hole 161. When the central rod 4 is in the second position, the pressure reducing hole 161 is open, so in the flow rate adjustment process, water can continuously flow from the water supply port 162 into the pressure chamber 163 and out through the pressure reducing hole 161, ensuring that the second flow path 14 is always open. When the central rod 4 is in the first position, the pressure reducing hole 161 is already closed, so the second flow path 14 is necessarily closed.

[0060] To operate the water flow on and off, the central rod 4 must be moved from a first position to a second position, or from a second position to a first position, by the pressing operation unit 2. Specifically, the pressing operation unit 2 is equipped with a handle lever 21, and a boss 22 is fixedly installed on the handle lever 21. A water-conducting spring 45 is fitted to the outside of the central rod 4.

[0061] The handle lever 21 is positioned in a high or low position by an external force. When the handle lever 21 is in the low position, the boss 22 is pressed against the central rod 4, moving the central rod 4 to a first position, which in turn compresses the water-conducting spring 45 and accumulates elastic restoring force. When the handle lever 21 is in the high position, the boss 22 detaches from the central rod 4, and the central rod 4 moves to a second position due to the restoring force of the water-conducting spring 45.

[0062] The structure described above can perform water closing and water flow operations. In order to perform flow rate adjustment operations in the water flow state, it is necessary to employ a rotation adjustment unit 3 and an interlocking control mechanism, and in this embodiment, the interlocking control mechanism is the adjustment base 6. The rotation adjustment unit 3 plays the role of rotating in response to external force from the user. The rotation adjustment unit 3 acts directly on the pilot valve via the adjustment base 6, moving the pilot valve between the second and third positions and further deforming the diaphragm 16.

[0063] Furthermore, the adjustment base 6 has a protruding column 61 that extends into the pressure chamber 163. When the adjustment base 6 is moved by the rotation of the rotation adjustment unit 3, the protruding column 61 contacts the pilot valve, moving the pilot valve between a second position and a third position, thereby adjusting the water discharge flow rate of the first flow path 13. When the pilot valve is in the third position, the diaphragm 16 seals the first flow path 13. In the process of the protruding column 61 moving the pilot valve, the distance between the diaphragm 16 and the first flow path 13 is shortened, and the water discharge flow rate decreases accordingly.

[0064] In this embodiment, the adjustment base 6 abuts against the adjustment spring 62. During the movement of the pilot valve from the second position to the third position, the adjustment spring 62 accumulates elastic restoring force. Furthermore, the adjustment base 6 extends outward along the radial direction, forming an ear portion 63 that abuts against and fits with the lower end surface of the rotation adjustment portion 3, and the lower end surface of the rotation adjustment portion 3 is an inclined surface 31 that gradually rises along the direction of rotation. As a result, when the rotation adjustment portion 3 rotates relative to the adjustment base 6, the ear portion 63 of the adjustment base 6 moves to different positions on the inclined surface 31. For example, when the ear portion 63 moves to the highest position on the inclined surface 31, the central rod 4 is in the second position, and when the ear portion 63 moves to the lowest position on the inclined surface 31, the central rod 4 is in the third position. When the ear portion 63 moves from the highest position to the lowest position on the inclined surface 31, a pressing force is generated between the inclined surface 31 and the ear portion 63, causing the adjustment base 6 to move downward, and at this time the adjustment base 6 compresses the adjustment spring 62. When the ear portion 63 moves from the lowest position to the highest position on the inclined surface 31, the pressing force between the inclined surface 31 and the ear portion 63 disappears, the adjustment spring 62 releases its elastic restoring force, and the adjustment base 6 moves upward.

[0065] To form the pressure chamber 163 described above, the valve body 1 further comprises an intermediate base 18. The intermediate base 18, the diaphragm 16, and the pilot valve seat 15 define the pressure chamber 163. The intermediate base 18 is provided with a second relief passage 181 through which the central rod 4 passes. A second seal ring 182 that fits with the central rod 4 is installed on the inner wall of the second relief passage 181. As a result, when the central rod 4 passes through the second relief passage 181, water leakage can be prevented by the sealed fit of the second seal ring 182.

[0066] Similarly, the pilot valve seat 15 is also provided with a first relief passage 151 through which the central rod 4 passes. In this embodiment, an inclined surface 47 is provided on the central rod 4 so that the water-permeating spring 45 can restore the central rod 4 on its own and prevent the central rod 4 from falling out of the pilot valve, and a protrusion 1511 that engages with the inclined surface is provided in the first relief passage 151 of the pilot valve seat 15. In the process of the water-permeating spring 45 restoring the central rod 4, the inclined surface 47 comes into contact with the protrusion 1511, causing the central rod 4 and the pilot valve seat 15 to move in conjunction, and the pilot valve seat 15 also moves from the first position to the second position. In the flow rate adjustment process, the rotation adjustment unit 3 acts directly on the pilot valve via the adjustment base 6, moving the pilot valve seat 15 of the pilot valve up and down. The protrusion 1511 of the pilot valve seat 15 engages with the inclined surface 47 of the central rod 4, causing the central rod 4 to move up and down synchronously. During this movement, the second flow path 14 remains open at all times, and the flow rate from the pressure reducing hole 161 does not change. Thus, the change in flow rate in the flow rate adjustment process is not due to the up and down movement of the central rod 4, but is achieved by the rotation adjustment unit 3 acting directly on the pilot valve via the adjustment base 6, moving the pilot valve up and down. As an alternative method, by installing an inclined surface at an intermediate position on the central rod 4 and a protrusion that engages with the inclined surface at the position of the intermediate base 18, when the rotation adjustment unit 3 acts directly on the pilot valve via the adjustment base 6 to move the pilot valve in the flow rate adjustment process, the central rod 4 does not move in conjunction, that is, the central rod 4 does not move up and down in the flow rate adjustment process. Furthermore, during the water flow process, the water flow spring 45 can independently restore the central rod 4, preventing the central rod 4 from detaching from the pilot valve.

[0067] In the structure described above, the water flow is opened and closed by pressing the handle lever 21, and the flow rate is adjusted by rotating the rotation adjustment unit 3. This requires pressing and rotating operations on different parts of the valve core, which is inconvenient to use. Therefore, in this embodiment, a groove 211 is provided on the side surface of the handle lever 21, and a protrusion 312 that fits into the groove 211 is provided on the rotation adjustment unit 3, so that the handle lever 21 and the rotation adjustment unit 3 can be fitted together in a manner that allows them to rotate in conjunction. As a result, rotating the handle lever 21 also allows the rotation adjustment unit 3 to rotate, and all user operations can be performed with just the handle lever 21.

[0068] Finally, to limit the rotation range of the rotation adjustment unit 3, the valve body 1 includes a housing 17 that surrounds the outside of the rotation adjustment unit 3. The housing 17 is provided with a first stopper boss 171 along the rotation path of the rotation adjustment unit 3. The rotation adjustment unit 3 is provided with a second stopper boss 32 corresponding to the first stopper boss 171. The first stopper boss 171 and the second stopper boss 32 are used to limit the rotation range of the rotation adjustment unit 3. As a result, when the rotation adjustment unit 3 rotates until it is pressed against the first stopper boss 171 and the second stopper boss 32, the rotation adjustment unit 3 stops rotating along its current direction of rotation.

[0069] Example 3 Referring to Figures 12 to 15, in this embodiment, the second flow path is installed in the pilot valve seat 15, and a relief opening is provided at the position corresponding to the outlet of the second flow path 14 in the diaphragm 16.

[0070] Since the pilot valve seat 15 is provided with a first escape passage 151 through which the central rod passes, the second flow path 14 communicates with the discharge port 12 via the first escape passage 151 and with the water supply hole 11 via the escape opening. In order to close the second flow path 14, in this embodiment, a sealing member 19 is installed on the inner wall of the first escape passage 15 as the second sealing portion.

[0071] Correspondingly, the central rod 4 is provided with a first portion 41 and a second portion 42, the second portion 42 having a larger diameter than the first portion 41. When the central rod 4 is in the first position, the second portion 42 is located inside the pressure relief hole 161 and seals the pressure relief hole 161, the diaphragm 16 seals the first flow path 13 due to the pressure action inside the pressure chamber, and the second portion 42 engages with the sealing member 19 to close the second flow path 14. When the central rod 4 is in the second position, the first portion 41 is located inside the pressure relief hole 161 and opens the pressure relief hole 161, the diaphragm 16 releases the seal on the first flow path 13 due to the pressure action outside the pressure chamber, the engagement between the second portion 42 and the sealing member 19 is released, and the second flow path 14 is opened. When the central rod 4 is in the third position, the second portion 42 is located inside the pressure relief hole 161 and seals the pressure relief hole 161, and the diaphragm 16 seals the first flow path 13 due to the pressure action in the pressure chamber. At this time, the engagement between the second portion 42 and the sealing member 19 is released, the second flow path 14 opens, and a state of water discharge at the minimum flow rate is formed.

[0072] The other structures are the same as in Example 1, so their description will be omitted.

[0073] Example 4 Referring to Figure 16, this embodiment further provides a shower device 7 comprising a shower rail 71, a ceiling shower head 72, a hand shower head 73, and a rotary water flow control valve core 74 with a push switch as described in Example 1, Example 2, or Example 3.

[0074] Example 5 Referring to Figures 17 and 18, this embodiment provides a shower control device 8 comprising a temperature control valve core 81, to which a cold water flow path 82 and a hot water flow path 83 are connected to the temperature control valve core 81 to discharge mixed water, and a rotary water flow control valve core 84 with a push switch as described in Embodiment 1, Embodiment 2, or Embodiment 3 is further mounted downstream of the temperature control valve core 81.

[0075] Example 6 Referring to Figures 19 and 20, this embodiment further provides a faucet 9 equipped with a rotary water flow control valve core with a push switch as described in Example 1, Example 2, or Example 3.

[0076] The above description merely represents preferred specific embodiments of the present invention and does not limit the scope of the claims of the present invention. All technical equivalent substitutions based on the content of the specification of the present invention fall within the scope of protection of the present invention.

Claims

1. A rotary water flow control valve core with a pressure switch, It comprises a valve body, a pressing operation part, a rotation adjustment part, and a central rod. The valve body comprises a water inlet, a water outlet, and a first and second flow path connecting the water inlet and the water outlet. A first seal portion and a second seal portion are installed at different positions within the valve body, and the pressing operation portion is used to move the central rod and the first seal portion between a first position and a second position. When the central rod and the first seal portion are in the first position, the first seal portion seals the first passage, and the central rod engages with the second seal portion to close the second passage. When the central rod and the first seal portion are in the second position, the first seal portion opens the first passage, the engagement between the central rod and the second seal portion is released, and the second passage opens. The rotary water flow rate control valve core with a push switch is characterized in that, when the central rod and the first seal portion are in the second position, the interlocking control mechanism controls the movement of the first seal portion between the second and third positions to adjust the water flow rate of the first flow path, and when the third position is between the second and first positions, and the central rod and the first seal portion are in the third position, the first seal portion seals the first flow path and the second flow path maintains communication with the water supply hole.

2. The rotary water flow control valve core with a push switch according to claim 1, characterized in that the first sealing portion is a pilot valve and comprises a pilot valve seat and a diaphragm fixed to the pilot valve seat.

3. The pilot valve is provided with a water supply port and a pressure reducing hole through which the central rod passes, and the pilot valve and the valve body constitute a pressure chamber. The interlocking control mechanism controls the movement of the central rod relative to the pressure relief hole, thereby adjusting the pressure inside the pressure chamber by adjusting the size of the pressure relief hole, and moves the pilot valve between a second position and a third position due to the pressure difference inside and outside the pressure chamber, as described in claim 2.

4. The central rod is provided with a first portion and a second portion, the second portion having a larger diameter than the first portion. The rotary water flow control valve core with a push switch according to claim 3, characterized in that when the central rod is in a first position, the second portion is located inside the pressure relief hole and seals the pressure relief hole, and the diaphragm seals the first flow path by the pressure action inside the pressure chamber, and when the central rod is in a second position, the first portion is located inside the pressure relief hole and opens the pressure relief hole, and the diaphragm opens the first flow path by the pressure action outside the pressure chamber.

5. The aforementioned interlocking control mechanism is a guide base, and when the central rod is in the second position, the guide base is fitted to the central rod in an interlocking manner. The rotary water flow control valve core with a push switch according to claim 3, characterized in that the guide base is fitted to the rotation adjustment unit in a direction-changing manner, thereby converting the rotation of the rotation adjustment unit into movement of the central rod from a second position to a third position.

6. The central rod has a transition section between the first and second portions, and the diameter of the transition section gradually increases from the end adjacent to the first portion toward the other end. The rotary water flow control valve core with a push switch according to claim 5, characterized in that, as the central rod moves from a second position to a third position, the transition portion enters the pressure relief hole, thereby gradually reducing the water passage area of ​​the pressure relief hole, and when the central rod moves to the third position, the second portion is located inside the pressure relief hole and seals the pressure relief hole, and the diaphragm seals the first flow path by the pressure action in the pressure chamber.

7. The rotary water flow control valve core with a push switch according to claim 5, characterized in that the guide base has a relief opening through which the pressing operation part passes, the inner wall of the relief opening extends inward along the radial direction to form a stopper surface, the upper end of the central rod extends outward along the radial direction to form a stopper fitting surface, and when the central rod is in a second position, the stopper surface abuts and fits with the stopper fitting surface.

8. The rotary water flow control valve core with a push switch according to claim 7, characterized in that the rotation adjustment part is fitted to the outside of the guide base, the guide base extends outward along the radial direction to form lugs that abut and fit against the lower end surface of the rotation adjustment part, the lower end surface of the rotation adjustment part is an inclined surface that gradually rises along the direction of rotation, the central rod is in a second position when the lugs move to the highest position on the inclined surface, and the central rod is in a third position when the lugs move to the lowest position on the inclined surface.

9. The rotary water flow control valve core with a push switch according to claim 2, characterized in that the rotation adjustment unit acts directly on the pilot valve via an interlocking control mechanism to move the pilot valve between a second position and a third position.

10. The interlocking control mechanism is an adjustment base, and the adjustment base is reversibly fitted with the rotation adjustment unit, thereby converting the rotation of the rotation adjustment unit into movement of the adjustment base from a second position to a third position, as described in claim 9.

11. The pilot valve and valve body constitute a pressure chamber. The rotary water flow control valve core with a push switch according to claim 10, wherein the adjustment base has a protruding column that extends into the pressure chamber, and when the adjustment is moved by the rotation of the rotary adjustment part, the protruding column moves the pilot valve between a second position and a third position to adjust the water discharge flow rate of the first flow path.

12. The rotary water flow control valve core with a push switch according to claim 11, characterized in that the adjustment base has lugs that extend outward along the radial direction and abut and fit with the lower end surface of the rotation adjustment part, the lower end surface of the rotation adjustment part is an inclined surface that gradually rises along the direction of rotation, the diaphragm is in a second position when the lugs move to the highest position on the inclined surface, and the diaphragm is in a third position when the lugs move to the lowest position on the inclined surface.

13. The rotary water flow control valve core with a push switch according to claim 12, characterized in that the adjustment base is in contact with an adjustment spring, and the adjustment spring accumulates an elastic restoring force during movement of the adjustment base from a second position to a third position.

14. The rotary water flow control valve core with a push switch according to claim 1, characterized in that the second flow path is located below the first flow path, a third portion is further provided at the end of the central rod that is away from the second portion relative to the first portion, a first seal ring is provided on the inner wall of the second flow path as a second seal portion, and when the central rod is in the first position, the third portion is tightly fitted with the first seal ring.

15. The rotary water flow control valve core with a pressure switch according to claim 3, characterized in that the second flow path is provided with the pressure reducing hole.

16. The rotary water flow control valve core with a push switch according to claim 3, characterized in that the pilot valve seat is provided with the second flow path, and a relief opening is provided at a position corresponding to the outlet of the second flow path of the diaphragm.

17. The rotary water flow control valve core with a push switch according to claim 16, characterized in that the pilot valve seat is provided with a first relief passage through which the central rod passes, and a sealing member is provided on the inner wall of the first relief passage as the second sealing portion.

18. The central rod is provided with a first portion and a second portion, the second portion having a larger diameter than the first portion. The rotary water flow control valve core with a push switch according to claim 17, characterized in that when the central rod is in a first position, the second portion is located inside the pressure relief hole and seals the pressure relief hole, the diaphragm seals the first flow path by the pressure action inside the pressure chamber, and the second portion engages with the sealing member to close the second flow path, and when the central rod is in a second position, the first portion is located inside the pressure relief hole and opens the pressure relief hole, the diaphragm opens the first flow path by the pressure action outside the pressure chamber, the engagement between the second portion and the sealing member is released, and the second flow path is opened.

19. The pressing operation section is equipped with a handle lever with a boss fixed inside, and a water-conducting spring is fitted to the outside of the central rod. Rotary water flow control valve core with a push switch according to any one of claims 1 to 18, characterized in that the handle lever is positioned in a high or low position by an external force, and when the handle lever is in the low position, the boss is pressed against the central rod, moving the central rod to a first position, the central rod compresses the water flow spring, and an elastic restoring force is accumulated, and when the handle lever is in the high position, the boss detaches from the central rod, and the central rod moves to a second position by the restoring force of the water flow spring.

20. The rotary water flow control valve core with a push switch according to claim 19, characterized in that a groove is provided on the side surface of the handle lever, and a protrusion that fits into the groove is provided on the rotation adjustment part, so that the handle lever and the rotation adjustment part are fitted together so as to be able to move in conjunction in the rotational direction.

21. The rotary water flow control valve core with a push switch according to any one of claims 1 to 18, characterized in that the valve body comprises a housing surrounding the outside of the rotation adjustment section, a first stopper boss is installed in the housing along the rotation path of the rotation adjustment section, a second stopper boss corresponding to the first stopper boss is installed in the rotation adjustment section, and the first stopper boss and the second stopper boss are used to limit the rotation range of the rotation adjustment section.

22. A shower device comprising a shower rail, a ceiling shower head, a hand shower head, and a rotary water flow control valve core with a push switch as described in any one of claims 1 to 18.

23. A shower control device, A shower control device comprising a temperature control valve core, wherein a cold water channel and a hot water channel are connected to the temperature control valve core to discharge mixed water, and further comprising a rotary water flow control valve core with a push switch as described in any one of claims 1 to 18, mounted downstream of the temperature control valve core.

24. A faucet characterized by being fitted with a rotary water flow control valve core with a push switch as described in any one of claims 1 to 18.

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