Waterway switching device and shower head

Abstract

The invention belongs to the technical field of bathroom accessories, and discloses a waterway switching device and a shower head. The waterway switching device comprises a fixed seat, a plurality of pilot valves and a plurality of valve shafts. A plurality of independent pressure cavities are formed by the pilot valves and the fixed seat respectively, and the pressure cavities are communicated with pressure relief channels; the pressure cavity communicates with the water inlet end through the pilot valve. The valve shafts are in one-to-one correspondence with the pressure cavities and can block or open the corresponding pressure relief channels. The pressure relief channel is opened, the corresponding pressure cavity relieves pressure, and the pilot valve moves under the action of water pressure to enable the water inlet end to be communicated with the corresponding water outlet main flow channel; and water in the pressure cavity can flow out to the downstream flow channel through the corresponding pressure relief channel. According to the waterway switching device, the switching stroke of the valve shaft can be shortened, the switching mode is simplified, and the switching force of a user is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of bathrooms, and in particular to a water channel switching device and a shower head. Background Art

[0002] When switching the water outlet of the existing shower head, there are problems such as the valve shaft switching stroke is too long, the user has difficulty in switching, or the switching method is complicated.

[0003] Therefore, there is an urgent need for a water channel switching device and a shower head to solve the above problems. Summary of the invention

[0004] According to one aspect of the present invention, an object is to provide a water circuit switching device, which can shorten the valve shaft switching stroke, simplify the switching method, and save user switching effort when switching the water outlet water circuit.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The waterway switching device comprises:

[0007] A fixed seat and a plurality of pilot valves, wherein the plurality of pilot valves respectively form a plurality of independent pressure chambers with the fixed seat, and the pressure chambers are connected with a pressure relief channel; the pressure chambers are connected with the water inlet end through the pilot valves;

[0008] A plurality of valve shafts are provided, each of the valve shafts corresponds to the pressure chamber one by one, and can block or open the corresponding pressure relief channel; when the pressure relief channel is opened, the corresponding pressure chamber is depressurized, and the pilot valve moves under the action of water pressure to connect the water inlet end and the corresponding main water outlet channel; the water in the pressure chamber can flow out to the downstream channel through the corresponding pressure relief channel.

[0009] As a preferred solution of the water circuit switching device provided by the present invention, the water circuit switching device also includes a transmission seat and a driving mechanism connected in a transmission manner, and the driving mechanism can drive the transmission seat to move, and selectively drive the valve shaft to move to open the corresponding pressure relief channel, so as to relieve the pressure in the corresponding pressure chamber.

[0010] As a preferred solution of the waterway switching device provided by the present invention, a plurality of control notches are provided along the circumference of the transmission seat, a movable ball is movably provided at one end of the valve shaft, and a push elastic element is provided at the other end, and a first sealing ring is provided around the valve shaft, and the first sealing ring can be detachably sealed between the pressure relief channel and the pressure chamber;

[0011] When the transmission seat rotates to any of the control slots facing the movable ball, the movable ball can move into the control slot, and the valve shaft can move toward the direction of the transmission seat under the pushing action of the pushing elastic element, so as to drive the first sealing ring to move and open the channel between the pressure relief channel and the pressure chamber.

[0012] As a preferred solution of the water path switching device provided by the present invention, the fixed seat is connected to a plurality of valve shaft mounting columns, the valve shaft is coaxially arranged in the valve shaft mounting columns, the pressure relief channel is formed between the circumference of the valve shaft and the inner wall of the valve shaft mounting columns, and the second sealing ring and the third sealing ring are respectively arranged on both sides of the first sealing ring on the valve shaft, and the second sealing ring and the third sealing ring are respectively abutted against the inner wall of the valve shaft mounting columns.

[0013] As a preferred solution of the waterway switching device provided by the present invention, the driving mechanism includes a ratchet seat, a button and a sliding member, the transmission seat is provided with a first ratchet, the ratchet seat is provided with a second ratchet, the transmission seat is installed on the ratchet seat, the first ratchet is meshed and connected to the second ratchet, and the ratchet seat moves, which can drive the transmission seat to rotate;

[0014] The ratchet seat is also provided with a third ratchet, and the sliding member is provided with a ratchet bar. The third ratchet is meshingly connected to the ratchet bar, and the sliding member is transmission-connected to the button. When the button is pressed down, the sliding member can move toward the ratchet seat and drive the ratchet seat to rotate.

[0015] As a preferred solution of the waterway switching device provided by the present invention, the driving mechanism further includes a reset elastic element and a supporting elastic element, the sliding member is provided with a mounting column parallel to the moving direction, the reset elastic element is sleeved on the mounting column and abuts against the side of the water diversion body, the button is pressed down, the reset elastic element can be compressed, and the reset elastic element can also restore to its original state when the pressure on the button is removed, so as to drive the sliding member to reset, and the transmission seat is kept in the switched position;

[0016] The ratchet bar cooperates with the third ratchet wheel to drive the ratchet seat to rotate and reset, and drives the second ratchet wheel to rotate in the opposite direction. The transmission seat moves upward under the cooperation of the first ratchet wheel and the second ratchet wheel to disengage the first ratchet wheel from the second ratchet wheel.

[0017] The supporting elastic element is arranged between the transmission seat and the water diversion body, and can pull the transmission seat to sit and engage with the ratchet seat after the first ratchet is disengaged from the second ratchet and the transmission seat and the ratchet seat rotate relatively.

[0018] As a preferred solution of the water channel switching device provided by the present invention, the driving mechanism also includes a rocker rod, which is movably connected to the button and swingably abuts against the sliding member. When the button is pressed down, the rocker rod can be driven to swing to push the sliding member to move.

[0019] As a preferred solution of the water channel switching device provided by the present invention, the first ratchet tooth of the first ratchet wheel is provided with a first inclined guide surface, and the second ratchet tooth of the second ratchet wheel is provided with a second inclined guide surface, and the first inclined guide surface can move along the second inclined guide surface to make the first ratchet tooth disengage from or engage with the second ratchet tooth.

[0020] As a preferred solution of the water channel switching device provided by the present invention, the number of teeth of the second ratchet teeth of the second ratchet wheel is a common factor of the number of teeth of the first ratchet teeth of the first ratchet wheel.

[0021] As a preferred solution of the waterway switching device provided by the present invention, the pilot valve ring is provided with an annular gap, and the pressure chamber is connected to the water inlet end through the annular gap;

[0022] An opening and closing elastic element is arranged between the inner top of the fixed seat and the pilot valve, and a clearing rod is arranged on the opening and closing elastic element. The clearing rod can be extended and retracted in the annular gap. When the pilot valve moves toward the inner top of the fixed seat under the action of water pressure, the water inlet end is connected to the main water outlet channel.

[0023] As a preferred solution of the water channel switching device provided by the present invention, there are multiple fixed seats, the transmission seat is arranged between the multiple fixed seats, the multiple valve shafts are arranged in an array with the transmission seat as the center, and the transmission seat can rotate to cyclically drive the valve shaft to move.

[0024] According to another aspect of the present invention, an object is to provide a shower head, the shower head includes a water diversion body, and also includes a water channel switching device as described in any of the above schemes, the fixing seats are multiple, the multiple fixing seats are arranged on the water diversion body in a circular array, and the valve shaft is arranged on the water diversion body;

[0025] The water diversion body is provided with a plurality of partition structures, and the partition structures divide the water diversion body into a plurality of water outlet spaces, and the pressure relief channels and the main water outlet channels corresponding to each other are located in the same water outlet space.

[0026] As a preferred embodiment of the shower provided by the present invention, the shower further comprises a shower body, a water diversion seat, a water spout and a face cover, wherein the water diversion body is arranged in the shower body, the water diversion seat is snap-connected to the bottom of the water diversion body, the water spout is snap-connected to the bottom of the water diversion seat, and the face cover is snap-connected to the bottom of the water spout, and the water flowing out of the water diversion body can flow out of the shower through the water diversion seat, the water spout and the face cover in sequence.

[0027] Beneficial effects of the present invention:

[0028] The water circuit switching device provided by the present invention includes a fixed seat, a plurality of pilot valves and a plurality of valve shafts. The plurality of pilot valves respectively form a plurality of independent pressure chambers with the fixed seat, and the pressure chambers are connected with a pressure relief channel; the pressure chamber is connected to the water inlet end through the pilot valve. The valve shaft corresponds to the pressure chamber one by one, and can block or open the corresponding pressure relief channel. When the pressure relief channel is opened, the corresponding pressure chamber is depressurized, and the pilot valve moves under the action of water pressure to connect the water inlet end and the corresponding main water outlet channel; the water in the pressure chamber can flow out to the downstream channel through the corresponding pressure relief channel. Through the above arrangement, the pilot valve can move under the action of water pressure within the difference between the cross-sectional area of ​​the opening of the fixed seat corresponding to the pressure chamber and the cross-sectional area of ​​the corresponding main water outlet channel, so that the pressure chamber and the corresponding main water outlet channel are connected, and at this time, the water in the pressure chamber can flow out of the fixed seat through the corresponding pressure relief channel and the corresponding main water outlet channel. That is to say, after water enters the pressure chamber, the pilot valve can be opened by means of pressure relief, relying only on a small water pressure, so as to open the water outlet channel, shorten the valve shaft switching stroke, simplify the switching method, and save the user's switching force. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0030] Figure 1 is an exploded schematic diagram of a shower head provided by an embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of assembling the water channel switching device provided by an embodiment of the present invention on a water diversion body;

[0032] Figure 3 is a schematic diagram of a side of a water diversion body away from a waterway switching device provided by an embodiment of the present invention;

[0033] Figure 4It is a partial structural exploded schematic diagram of a waterway switching device provided in an embodiment of the present invention;

[0034] Figure 5 is a top view of a waterway switching device provided by an embodiment of the present invention;

[0035] Figure 6 yes Figure 5 Sectional view along AA direction;

[0036] Figure 7 yes Figure 6 A partial enlarged view of the structure marked as C;

[0037] Figure 8 yes Figure 5 Cross-sectional view along the BB direction;

[0038] Fig. 9 yes Figure 8 A partial enlarged view of the structure marked as D;

[0039] Fig.10 It is a schematic diagram of the structure of the opening and closing elastic element provided in this embodiment.

[0040] In the figure:

[0041] 10. Water distribution body; 11. Separation structure; 12. Water outlet space; 13. Water inlet end; 20. Water distribution seat; 30. Water spout; 40. Surface cover; 50. Shower body;

[0042] 100, fixing seat; 110, pressure chamber; 120, pressure relief channel; 130, valve shaft mounting column; 131, mounting column housing; 132, mounting column inner core; 140, water flow channel;

[0043] 200, pilot valve; 210, annular gap;

[0044] 300, valve shaft; 310, movable ball; 320, push elastic element; 330, first sealing ring; 340, second sealing ring; 350, third sealing ring;

[0045] 400, transmission seat; 410, control notch; 420, first ratchet;

[0046] 500, driving mechanism; 510, button; 520, ratchet seat; 521, second ratchet; 522, third ratchet; 530, sliding member; 531, ratchet bar; 532, mounting column; 540, resetting elastic element; 550, swing rod; 560, supporting elastic element;

[0047] 600, main outlet channel;

[0048] 700, opening and closing elastic element; 710, dredging rod. DETAILED DESCRIPTION

[0049] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In this embodiment, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.

[0057] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0058] Reference Figure 1-Figure 3 , this embodiment provides a water channel switching device and a shower head.

[0059] Specifically, the shower head can have multiple water outlet modes such as shower water, concentrated water and bubble water, and includes a water diversion body 10 and a water channel switching device provided in this embodiment. The water diversion body 10 is provided with a plurality of partition structures 11 and a water inlet end 13, and the partition structure 11 divides the water diversion body 10 into a plurality of water outlet spaces 12. The water channel switching device is provided on the water diversion body 10, and can switch the water outlet water channel of the shower head, that is, the water flows out of one of the plurality of water outlet spaces 12.

[0060] More specifically, the shower head further comprises a water diversion seat 20, a water nozzle 30, a face cover 40 and a shower head body 50. The water diversion body 10 is disposed in the shower head body 50, the water diversion seat 20 is snap-fitted and connected below the water diversion body 10, the water nozzle 30 is snap-fitted and connected below the water diversion seat 20, and the face cover 40 is snap-fitted and connected below the water nozzle 30, and the water flowing out of the water diversion body 10 can flow out of the shower head after passing through the water diversion seat 20, the water nozzle 30 and the face cover 40 in sequence.

[0061] Reference Figure 2-Figure 8The waterway switching device provided in this embodiment includes a transmission seat 400, a driving mechanism 500, a fixed seat 100, a plurality of pilot valves 200 and a plurality of valve shafts 300. The plurality of pilot valves 200 respectively form a plurality of independent pressure chambers 110 with the fixed seat 100. In this embodiment, there are a plurality of fixed seats 100, each of which corresponds to a pilot valve 200, and each fixed seat 100 and the corresponding pilot valve 200 form a pressure chamber 110, and each pressure chamber 110 is connected to a pressure relief channel 120, and the pressure chamber 110 is connected to the pressure relief channel 120 through a water flow channel 140. The corresponding pressure relief channel 120 and the main outlet channel 600 are located in the same water outlet space 12 on the water diversion body 10. In other embodiments, only one fixed seat 100 may be provided, and a plurality of pilot valves 200 may be respectively provided in the fixed seat 100 to form a plurality of independent pressure chambers 110.

[0062] Specifically, a plurality of the fixing seats 100 are arranged on the water diversion body 10 in a circular array with the transmission seat 400 as the center, and the pressure chambers 110 in the plurality of the fixing seats 100 are independent of each other. The pressure chamber 110 is connected to the water inlet end 13 through the pilot valve 200, and the water inlet end 13 is selectively connected to the water outlet main channel 600 corresponding to the fixing seat 100 through the pilot valve 200. The pressure relief channel 120 is opened, and at this time, the water in the pressure chamber 110 can flow out through the corresponding pressure relief channel 120, the corresponding pressure chamber 110 can be depressurized, and the corresponding pilot valve 200 moves under the action of water pressure to connect the water inlet end 13 with the corresponding water outlet main channel 600.

[0063] Specifically, the valve shaft 300 corresponds to the fixed seat 100 one by one, and is movably arranged on the fixed seat 100, and can act to block or open the corresponding pressure relief channel 120. The transmission seat 400 is connected to the driving mechanism 500 in a transmission manner. The transmission seat 400 is arranged between multiple fixed seats 100 (of course, it can also be arranged above the fixed seat 100), and can rotate to cyclically drive multiple valve shafts 300 to move. The driving mechanism 500 is arranged on the water diversion body 10, including a button 510. The button 510 is pressed down to drive the transmission seat 400 to rotate, thereby selectively driving one of the valve shafts 300 to move to open one of the pressure relief channels 120 to select shower water, concentrated water or bubble water. Of course, it is also possible to drive two valve shafts 300 to move at the same time to open two pressure relief channels 120, so as to achieve the mixed water discharge of shower water and concentrated water or bubble water. Through the above arrangement, the driving seat 400 can be rotated by pressing the button 510, thereby achieving the movement of the valve shaft 300.

[0064] Continue to refer to Figure 2 and Figure 5-Figure 7The fixed seat 100 is provided with a valve shaft mounting column 130 in one-to-one correspondence and communication. The valve shaft mounting column 130 includes a mounting column shell 131 and a mounting column inner core 132 which are coaxially sleeved. The mounting column inner core 132 is coaxially arranged in the mounting column shell 131. The valve shaft 300 is coaxially arranged in the mounting column inner core 132. The pressure relief channel 120 is formed between the circumference of the valve shaft 300 and the inner wall of the mounting column inner core 132. The water flow channel 140 is provided at the connection between the fixed seat 100 and the valve shaft mounting column 130, and can connect the pressure relief channel 120 and the pressure chamber 110.

[0065] Specifically, refer to Figure 8 and Fig. 9 The pilot valve 200 is provided with an annular gap 210, and the pressure chamber 110 is connected to the water inlet end 13 through the annular gap 210, and the water at the water inlet end 13 can enter the pressure chamber 110 through the annular gap 210. Since the water inflow of the annular gap 210 is less than the water outflow of the pressure relief channel 120, the movement stroke of the valve shaft 300 is relatively short, and the switching stroke of the valve shaft 300 can be shortened.

[0066] More specifically, refer to Fig. 9 , an opening and closing elastic element 700 is arranged between the inner top of the fixing seat 100 and the pilot valve 200. When the water in the pressure chamber 110 flows to the downstream flow channel through the corresponding pressure relief channel 120, in this embodiment, the water in the pressure chamber 110 can flow out of the fixing seat 100 through the corresponding pressure relief channel 120. At this time, the pressure in the pressure chamber 110 is less than the pressure at the water inlet end 13. The pilot valve 200 is subjected to the water pressure within the difference between the cross-sectional area S1 at the water inlet end 13 and the cross-sectional area S2 of the corresponding water outlet main flow channel 600, and can move close to the inner top of the fixing seat 100, compressing the opening and closing elastic element 700, so that the water inlet end 13 and the corresponding water outlet main flow channel 600 are connected, and water can be discharged from the water outlet main flow channel 600. That is to say, after the water enters the pressure chamber 110, the pressure of the pressure chamber 110 is relieved, and the pilot valve 200 can be opened only by a small water pressure to open the water outlet waterway.

[0067] More specifically, refer to Fig. 9 and Fig.10 The opening and closing elastic element 700 is integrally provided with a dredging rod 710, and the dredging rod 710 can be extended and retracted in the annular gap 210. By integrating the dredging rod 710 on the opening and closing elastic element 700, scale or impurities in the annular gap 210 can be cleared during each compression and recovery of the opening and closing elastic element 700 to prevent blockage.

[0068] Continue to refer to Figure 2 and Figure 4-Figure 7, a plurality of control slots 410 are provided along the circumference of the transmission seat 400. A movable ball 310 is movably provided at one end of the valve shaft 300, and a push elastic element 320 is provided at the other end. A first sealing ring 330 is provided around the valve shaft 300. The first sealing ring 330 is provided corresponding to the water flow channel 140, and can be detachably abutted against the abutting inclined surface of the end of the inner core 132 of the mounting column, and can be detachably blocked between the pressure relief channel 120 and the pressure chamber 110, that is, the water flow channel 140 can be cut off or opened. When the transmission seat 400 rotates to any control slot 410 facing the movable ball 310, the movable ball 310 can move into the control slot 410, and the valve shaft 300 can move toward the direction of the transmission seat 400 under the push action of the push elastic element 320, so as to drive the first sealing ring 330 to move and open the water flow channel 140.

[0069] Specifically, the valve shaft 300 is provided with a second sealing ring 340 and a third sealing ring 350 on both sides of the first sealing ring 330, and the second sealing ring 340 and the third sealing ring 350 are respectively abutted against the inner wall of the mounting column inner core 132. In this embodiment, the second sealing ring 340 and the third sealing ring 350 are both Y-shaped sealing rings. When the water flow channel 140 is in an open state and the pressure relief channel 120 is connected to the pressure chamber 110, since the area of ​​the second sealing ring 340 abutting against the inner wall of the inner core 132 of the mounting column is equal to the area of ​​the third sealing ring 350 abutting against the inner wall of the inner core 132 of the mounting column, the valve shaft 300 can be in a water pressure balanced state in the axial direction at this time, saving the user's switching force. At this time, the valve shaft 300 is only subjected to the force of the push elastic element 320. When switching the water outlet waterway, the control slot 410 on the transmission seat 400 only needs to overcome the rolling friction force of the push elastic element 320 acting on the movable ball 310 to move the valve shaft 300 to close the water flow channel 140, thereby disconnecting the pressure relief channel 120 and the pressure chamber 110. At this time, the corresponding pilot valve 200 moves downward under the water pressure of the opening and closing elastic element 700 and the corresponding cross-sectional area S2 of the main water outlet channel 600, disconnecting the main water outlet channel 600 from the water inlet end 13.

[0070] More specifically, the driving mechanism 500 includes a ratchet seat 520 and a sliding member 530. The transmission seat 400 is provided with a first ratchet 420, and the ratchet seat 520 is provided with a second ratchet 521. The transmission seat 400 is mounted on the ratchet seat 520, and the first ratchet 420 is meshedly connected to the second ratchet 521. When the ratchet seat 520 moves, the transmission seat 400 can be driven to rotate. The ratchet seat 520 is also provided with a third ratchet 522, and the sliding member 530 is provided with a ratchet bar 531. The third ratchet 522 is meshedly connected to the ratchet bar 531. The sliding member 530 is transmission-connected to the button 510. When the button 510 is pressed down, the sliding member 530 can be driven to move toward the ratchet seat 520, and the ratchet seat 520 can be driven to rotate.

[0071] More specifically, the driving mechanism 500 further includes a resetting elastic element 540 and a supporting elastic element 560. The sliding member 530 is provided with a mounting post 532 parallel to the moving direction, the resetting elastic element 540 is sleeved on the mounting post 532 and abuts against the side of the water diversion body 10, the button 510 is pressed down, the resetting elastic element 540 can be compressed, and the resetting elastic element 540 can also restore to its original state when the pressure on the button 510 is removed, so as to drive the sliding member 530 to reset, the ratchet bar 531 cooperates with the third ratchet 522, drives the ratchet seat 520 to rotate and reset, and drives the second ratchet 521 to rotate in the opposite direction, and the transmission seat 400 moves upward under the cooperation of the first ratchet 420 and the second ratchet 521, so that the first ratchet 420 is separated from the second ratchet 521. The supporting elastic element 560 is disposed between the transmission seat 400 and the water diversion body 10. The transmission seat 400 does not rotate under the action of the movable ball 310 and remains in the switched position. At this time, the supporting elastic element 560 can pull the transmission seat 400 to sit and engage with the ratchet seat 520 after the first ratchet 420 and the second ratchet 521 are disengaged and the transmission seat 400 and the ratchet seat 520 rotate relative to each other and the transmission seat 400 remains in the switched position.

[0072] More specifically, the driving mechanism 500 further includes a swing rod 550 , which is movably connected to the button 510 and swingably abuts against the sliding member 530 . When the button 510 is pressed downward, the swing rod 550 can be driven to swing to push the sliding member 530 to move.

[0073] Continue to refer to Figure 1 and Figure 4 The first ratchet tooth of the first ratchet wheel 420 is provided with a first inclined guide surface, and the second ratchet tooth of the second ratchet wheel 521 is provided with a second inclined guide surface. The first inclined guide surface can move along the second inclined guide surface to make the first ratchet tooth disengage from or engage with the second ratchet tooth.

[0074] When the button 510 is pressed, the button 510 drives the swing rod 550 to rotate counterclockwise. The swing rod 550 rotates and drives the sliding member 530 to move leftward to overcome the elastic force of the reset elastic element 540. The reset elastic element 540 is compressed and stores force. The ratchet bar 531 on the sliding member 530 cooperates with the third ratchet 522 on the ratchet seat 520. Since the ratchet seat 520 cooperates with the transmission seat 400 through the second ratchet 521 and the first ratchet 420, the sliding member 530 can drive the ratchet seat 520 and the transmission seat 400 to rotate counterclockwise by a ratchet angle. At this time, the control notch 410 on the transmission seat 400 is kept in the switched position under the action of the movable ball 310. After the pressing force applied to the button 510 is removed, the sliding member 530 is reset under the action of the reset elastic element 540. Due to the cooperation between the ratchet bar 531 and the third ratchet 522, the sliding member 530 can drive the ratchet seat 520 to rotate clockwise in the opposite direction during the reset process. During the reverse rotation of the ratchet seat 520, the second ratchet 521 cooperates with the first ratchet 420 to enable the transmission seat 400 to overcome the support elastic element 560 and move upward until the ratchet seat 520 reversely rotates a ratchet angle, and the transmission seat 400 moves downward to the next switching initial position under the action of the support elastic element 560, thereby realizing the rotation of the transmission seat 400. Each time the button 510 is pressed, the transmission seat 400 rotates once, and each control notch 410 on the transmission seat 400 can be sequentially aligned with the upper movable balls 310 of the multiple valve shafts 300, so as to realize the sequential opening and closing of the multiple water flow channels 140.

[0075] It should be noted that in this embodiment, the switching of three water outlet waterways can be realized, and three fixed seats 100 are arranged on the water diversion body 10. Corresponding to three pilot valves 200 and three valve shafts 300, and in order to realize short-stroke switching, the transmission seat 400 rotates by 15 degrees each time, and the number of teeth of the first ratchet teeth of the corresponding first ratchet wheel 420 is 360 / 15=24, and the number of teeth of the second ratchet teeth of the second ratchet wheel 521 on the ratchet wheel seat 520 can be any common factor of 24 (except 1). In this embodiment, the number of ratchet teeth of the second ratchet wheel 521 is 12, and the number of control notches 410 on the corresponding ratchet wheel seat 520 is 360 / (15×3)=8.

[0076] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A waterway switching device, characterized in that: include: A fixed seat (100) and a plurality of pilot valves (200), wherein the plurality of pilot valves (200) respectively form a plurality of independent pressure chambers (110) with the fixed seat (100), wherein the pressure chambers (110) are connected to pressure relief channels (120); and the pressure chambers (110) are connected to a water inlet end (13) through the pilot valves (200); A plurality of valve shafts (300), each of the valve shafts (300) corresponding to the pressure chamber (110) one by one, and capable of blocking or opening the corresponding pressure relief channel (120); when the pressure relief channel (120) is opened, the corresponding pressure chamber (110) is depressurized, and the pilot valve (200) moves under the action of water pressure to connect the water inlet end (13) and the corresponding water outlet main channel (600); water in the pressure chamber (110) can flow out to the downstream channel through the corresponding pressure relief channel (120).

2. The waterway switching device according to claim 1, characterized in that: The water channel switching device also includes a transmission seat (400) and a driving mechanism (500) that are transmission-connected, and the driving mechanism (500) can drive the transmission seat (400) to move, and selectively drive the valve shaft (300) to move and open the corresponding pressure relief channel (120), so as to relieve the pressure of the corresponding pressure chamber (110).

3. The waterway switching device according to claim 2, characterized in that: A plurality of control notches (410) are provided along the circumference of the transmission seat (400); a movable ball (310) is movably provided at one end of the valve shaft (300), and a push elastic element (320) is provided at the other end; a first sealing ring (330) is provided around the valve shaft (300); the first sealing ring (330) is detachably sealed between the pressure relief channel (120) and the pressure chamber (110); When the transmission seat (400) rotates to any of the control slots (410) facing the movable ball (310), the movable ball (310) can move into the control slot (410), and the valve shaft (300) can move toward the direction of the transmission seat (400) under the pushing action of the pushing elastic element (320), so as to drive the first sealing ring (330) to move and open the channel between the pressure relief channel (120) and the pressure chamber (110).

4. The waterway switching device according to claim 3, characterized in that: The fixing seat (100) is connected to a plurality of valve shaft mounting columns (130), the valve shaft (300) is coaxially arranged in the valve shaft mounting column (130), the pressure relief channel (120) is formed between the circumferential side of the valve shaft (300) and the inner wall of the valve shaft mounting column (130), and a second sealing ring component (340) and a third sealing ring component (350) are respectively arranged on both sides of the first sealing ring component (330) on the valve shaft (300), and the second sealing ring component (340) and the third sealing ring component (350) are respectively abutted against the inner wall of the valve shaft mounting column (130).

5. The waterway switching device according to claim 2, characterized in that: The driving mechanism (500) comprises a ratchet seat (520), a button (510) and a sliding member (530); the transmission seat (400) is provided with a first ratchet (420); the ratchet seat (520) is provided with a second ratchet (521); the transmission seat (400) is mounted on the ratchet seat (520); the first ratchet (420) is meshedly connected to the second ratchet (521); when the ratchet seat (520) moves, it can drive the transmission seat (400) to rotate; The ratchet seat (520) is also provided with a third ratchet (522), and the sliding member (530) is provided with a ratchet bar (531). The third ratchet (522) is meshedly connected to the ratchet bar (531), and the sliding member (530) is transmission-connected to the button (510). When the button (510) is pressed down, the sliding member (530) can be driven to move toward the ratchet seat (520), thereby driving the ratchet seat (520) to rotate.

6. The waterway switching device according to claim 5, characterized in that: The driving mechanism (500) further comprises a reset elastic element (540) and a supporting elastic element (560); the sliding member (530) is provided with a mounting column (532) parallel to the moving direction; the reset elastic element (540) is sleeved on the mounting column (532) and abuts against the side of the water diversion body (10); when the button (510) is pressed down, the reset elastic element (540) can be compressed; the reset elastic element (540) can also restore to its original state when the pressure on the button (510) is removed, so as to drive the sliding member (530) to reset, and the transmission seat (400) is kept in the switched position; The ratchet bar (531) cooperates with the third ratchet (522) to drive the ratchet seat (520) to rotate and reset, and drive the second ratchet (521) to rotate in the opposite direction. The transmission seat (400) moves upward under the cooperation of the first ratchet (420) and the second ratchet (521) to disengage the first ratchet (420) from the second ratchet (521); The supporting elastic element (560) is arranged between the transmission seat (400) and the water diversion body (10), and the supporting elastic element (560) can pull the transmission seat (400) to sit and engage with the ratchet seat (520) after the first ratchet (420) and the second ratchet (521) are disengaged and the transmission seat (400) and the ratchet seat (520) rotate relative to each other.

7. The waterway switching device according to claim 5, characterized in that: The driving mechanism (500) further comprises a swing rod (550), wherein the swing rod (550) is movably connected to the button (510) and is swingably abutted against the sliding member (530); when the button (510) is pressed downward, the swing rod (550) can be driven to swing, thereby pushing the sliding member (530) to move.

8. The waterway switching device according to claim 5, characterized in that: The first ratchet tooth of the first ratchet wheel (420) is provided with a first inclined guide surface, and the second ratchet tooth of the second ratchet wheel (521) is provided with a second inclined guide surface, and the first inclined guide surface can move along the second inclined guide surface to enable the first ratchet tooth to disengage from or engage with the second ratchet tooth.

9. The waterway switching device according to claim 5, characterized in that: The number of teeth of the second ratchet teeth of the second ratchet wheel (521) is a common factor of the number of teeth of the first ratchet teeth of the first ratchet wheel (420).

10. The waterway switching device according to claim 1, characterized in that: The pilot valve (200) is provided with an annular gap (210), and the pressure chamber (110) is connected to the water inlet end (13) through the annular gap (210); An opening and closing elastic element (700) is provided between the inner top of the fixing seat (100) and the pilot valve (200), and a clearing rod (710) is provided on the opening and closing elastic element (700). The clearing rod (710) can be extended and retracted in the annular gap (210). When the pilot valve (200) moves toward the inner top of the fixing seat (100) under the action of water pressure, the water inlet end (13) is connected to the main water outlet channel (600).

11. The waterway switching device according to claim 2, characterized in that: There are a plurality of fixed seats (100), the transmission seat (400) is arranged between the plurality of fixed seats (100), the plurality of valve shafts (300) are arranged in an array with the transmission seat (400) as the center, and the transmission seat (400) is capable of rotating to cyclically drive the valve shaft (300) to move.

12. A shower head, characterized in that: It comprises a water diversion body (10), and also comprises a water channel switching device according to any one of claims 1 to 11, wherein the fixing seats (100) are multiple, and the multiple fixing seats (100) are arranged on the water diversion body (10) in a circular array, and the valve shaft (300) is arranged on the water diversion body (10); The water diversion body (10) is provided with a plurality of partition structures (11), the partition structures (11) dividing the water diversion body (10) into a plurality of water outlet spaces (12), and the pressure relief channels (120) and the main water outlet channels (600) corresponding to each other are located in the same water outlet space (12).

13. The shower head according to claim 12, characterized in that: The shower head further comprises a shower head body (50), a water diversion seat (20), a water nozzle (30) and a face cover (40); the water diversion body (10) is arranged in the shower head body (50); the water diversion seat (20) is snap-fitted and connected to the bottom of the water diversion body (10); the water nozzle (30) is snap-fitted and connected to the bottom of the water diversion seat (20); and the face cover (40) is snap-fitted and connected to the bottom of the water diversion seat (20); water flowing out of the water diversion body (10) can flow out of the shower head after passing through the water diversion seat (20), the water nozzle (30) and the face cover (40) in sequence.

Images