Waterway switching device and shower head

Abstract

The utility model 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 utility model relates to the technical field of bathroom, especially a waterway switching device and a shower head. BACKGROUND

[0002] The existing shower head has the problems of long valve shaft switching stroke, user's switching effort or complex switching mode when switching the water outlet waterway.

[0003] Therefore, a waterway switching device and a shower head are needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] According to one aspect of the utility model, the waterway switching device can shorten the valve shaft switching stroke, simplify the switching mode and save the user's switching effort when switching the water outlet waterway.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The waterway switching device comprises:

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

[0008] A plurality of valve shafts, the valve shafts correspond to the pressure chambers one by one and can block or open the corresponding pressure relief channels; when the pressure relief channels are opened, the corresponding pressure chambers are relieved, the pilot valves move under the action of water pressure to communicate the water inlet end with the corresponding water outlet main flow channel; the water in the pressure chambers can flow out to the downstream flow channel through the corresponding pressure relief channels.

[0009] As a preferred scheme of the waterway switching device provided by the utility model, the waterway switching device further comprises a transmission seat and a driving mechanism in transmission connection, the driving mechanism can drive the transmission seat to act, selectively drive the valve shaft to move and open the corresponding pressure relief channel to relieve the corresponding pressure chamber.

[0010] As a preferred scheme of the waterway switching device provided by the utility model, a plurality of control notches are arranged along the circumference of the transmission seat, one end of the valve shaft is movably provided with a movable ball, the other end is provided with a push elastic element, the valve shaft is annularly provided with a first sealing ring, and the first sealing ring is separably blocked between the pressure relief channel and the pressure chamber.

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

[0012] As a preferred scheme of the water route switching device, the fixed seat is provided with a plurality of valve shaft mounting columns, the valve shaft is coaxially arranged in the valve shaft mounting column, the pressure relief channel is formed between the valve shaft and the inner wall of the valve shaft mounting column, and the valve shaft is provided with a second sealing ring and a third sealing ring on the two sides of the first sealing ring respectively.

[0013] As a preferred scheme of the water route switching device, the driving mechanism comprises a ratchet seat, a button and a sliding piece, the transmission seat is provided with a first ratchet, the ratchet seat is provided with a second ratchet, the transmission seat is mounted on the ratchet seat, the first ratchet is meshingly connected to the second ratchet, and the ratchet seat can be driven to rotate.

[0014] The ratchet seat is further provided with a third ratchet, the sliding piece is provided with a ratchet gear, the third ratchet is meshingly connected to the ratchet gear, the sliding piece is transmissionally connected to the button, the button can be pressed downward to drive the sliding piece to move towards the ratchet seat, and the ratchet seat can be driven to rotate.

[0015] As a preferred scheme of the water route switching device, the driving mechanism further comprises a reset elastic element and a supporting elastic element, the sliding piece 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 distribution body, the button can be pressed downward, the reset elastic element can be compressed, and the reset elastic element can restore to the original state when the pressure on the button is removed, so as to drive the sliding piece to reset, and the transmission seat remains at the switched position.

[0016] The ratchet gear and the third ratchet cooperate to drive the ratchet seat to rotate and reset, and drive the second ratchet to rotate reversely, and the transmission seat moves upward under the cooperation of the first ratchet and the second ratchet, so that the first ratchet and the second ratchet are disengaged.

[0017] The supporting elastic element is arranged between the transmission seat and the water distribution body, and the supporting elastic element can pull the transmission seat to be seated and engaged in the ratchet seat after the first ratchet and the second ratchet are disengaged and the transmission seat rotates relative to the ratchet seat.

[0018] As a preferred scheme of the water route switching device provided by the utility model, the driving mechanism further comprises a swing rod, the swing rod is movably connected to the button and abuts against the sliding piece swingably, the button is pressed down, the swing rod is driven to swing, and the sliding piece is pushed to move.

[0019] As a preferred scheme of the water route switching device provided by the utility model, the first ratchet of the first ratchet wheel is provided with a first inclined guide surface, the second ratchet 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 so that the first ratchet is disengaged or engaged with the second ratchet.

[0020] As a preferred scheme of the water route switching device provided by the utility model, the number of teeth of the second ratchet of the second ratchet wheel is a common factor of the number of teeth of the first ratchet of the first ratchet wheel.

[0021] As a preferred scheme of the water route switching device provided by the utility model, the pilot valve ring is provided with an annular gap, and the pressure cavity is communicated with 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, a dredging rod is arranged on the opening and closing elastic element, the dredging rod can be telescoped in the annular gap, and when the pilot valve moves towards the inner top of the fixed seat under the action of water pressure, the water inlet end is communicated with the water outlet main flow channel.

[0023] As a preferred scheme of the water route switching device provided by the utility model, the fixed seat is multiple, 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 circularly drive the valve shafts to act.

[0024] According to another aspect of the utility model, the purpose is to provide a shower, the shower comprises a water distribution body, further comprises the water route switching device of any one of the above schemes, the fixed seat is multiple, and the multiple fixed seats are arranged in a circular array on the water distribution body, and the valve shaft is arranged on the water distribution body.

[0025] The water distribution body is provided with multiple separation structures, the separation structures divide the water distribution body into multiple water outlet spaces, and the pressure relief channel and the water outlet main flow channel corresponding to each other are located in the same water outlet space.

[0026] As the preferred scheme of the utility model provides, the shower still includes shower body, water distribution base, water nozzle and face cover, the water distribution body is arranged in the shower body, the water distribution base is buckled and connected below the water distribution body, the water nozzle is buckled and connected below the water distribution base, the face cover is buckled and connected below the water nozzle, the water flowing out from the water distribution body can flow out from the shower after passing through the water distribution base, the water nozzle and the face cover in turn.

[0027] The utility model discloses a beneficial effect:

[0028] The water route switching device provided by the utility model includes a fixing seat, multiple pilot valves and multiple valve shafts. The multiple pilot valves are respectively connected with the fixing seat to form multiple independent pressure cavities, and the pressure cavities are communicated with pressure relief channels; the pressure cavities are communicated with a water inlet end through the pilot valves. The valve shafts correspond to the pressure cavities one by one and can block or open the corresponding pressure relief channels. When the pressure relief channels are opened, the corresponding pressure cavities are relieved of pressure, and the pilot valves move under the action of water pressure to communicate the water inlet end with the corresponding water outlet main flow channel; the water in the pressure cavities can flow out to a downstream flow channel through the corresponding pressure relief channels. Through the above arrangement, the pilot valves can move under the action of water pressure within the difference between the cross-sectional area of the opening of the fixing seat corresponding to the pressure cavities and the cross-sectional area of the corresponding water outlet main flow channel, so as to communicate the pressure cavities with the corresponding water outlet main flow channel. At this time, the water in the pressure cavities can flow out from the fixing seat through the corresponding pressure relief channels and the corresponding water outlet main flow channel. That is to say, after the water enters the pressure cavities, the pilot valves can be opened by means of pressure relief, relying only on small water pressure, so as to realize the opening of the water outlet water route, shorten the valve shaft switching stroke, simplify the switching mode and save the switching force of the user. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by the person skilled in the art according to the contents of the embodiments of the utility model and the drawings without creating labor.

[0030] Figure 1 It is the exploded schematic view of the shower provided by the embodiments of the utility model;

[0031] Figure 2 It is the assembly schematic view of the water route switching device on the water distribution body provided by the embodiments of the utility model;

[0032] Figure 3 It is the schematic view of the side of the water distribution body away from the water route switching device provided by the embodiments of the utility model;

[0033] Figure 4It is partial structure exploded schematic view of water route switching device provided by the embodiment of the utility model;

[0034] Figure 5 It is top view of water route switching device provided by the embodiment of the utility model;

[0035] Figure 6 It is Figure 5 It is sectional view of A-A direction in it;

[0036] Figure 7 It is Figure 6 It is partial enlarged view of structure mark C in it;

[0037] Figure 8 It is Figure 5 It is sectional view of B-B direction in it;

[0038] Figure 9 It is Figure 8 It is partial enlarged view of structure mark D in it;

[0039] Figure 10 It is structure schematic view of opening and closing elastic element provided by the 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 nozzle;40, face cover;50, shower body;

[0042] 100, fixing seat;110, pressure cavity;120, pressure relief channel;130, valve shaft mounting column;131, mounting column shell;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 part;340, second sealing ring part;350, third sealing ring part;

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

[0046] 500, driving mechanism;510, button;520, ratchet wheel seat;521, second ratchet wheel;522, third ratchet wheel;530, sliding piece;531, ratchet bar;532, mounting column;540, reset elastic element;550, swing lever;560, support elastic element;

[0047] 600, water outlet main flow channel;

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

[0049] The technical solutions of the utility model will be further illustrated below in combination with the drawings and specific embodiments.

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0052] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0053] In the description of the utility model, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the utility model product is usually placed during use, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third", etc. are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0054] In the description of the utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "fixed" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0055] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0056] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0057] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0058] Referring to Figures 1-3 The present application provides a waterway switching device and a shower.

[0059] Specifically, the shower can have multiple water outlet modes such as shower water, concentrated water and bubble water, and it includes a water distribution body 10 and a waterway switching device provided in the present application. The water distribution body 10 is provided with a plurality of separation structures 11 and a water inlet end 13, and the separation structures 11 divide the water distribution body 10 into a plurality of water outlet spaces 12. The waterway switching device is arranged on the water distribution body 10, and can switch the water outlet path of the shower, i.e. switch the water flowing out of one of the plurality of water outlet spaces 12.

[0060] Specifically, the shower further includes a water distribution seat 20, a water nozzle 30, a face cover 40 and a shower body 50. The water distribution body 10 is arranged in the shower body 50, the water distribution seat 20 is connected to the lower side of the water distribution body 10, the water nozzle 30 is connected to the lower side of the water distribution seat 20, and the face cover 40 is connected to the lower side of the water nozzle 30. The water flowing out of the water distribution body 10 can flow out of the shower through the water distribution seat 20, the water nozzle 30 and the face cover 40 in sequence.

[0061] Referring to Figures 2-8The waterway switching device provided by the embodiment comprises 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 form a plurality of independent pressure cavities 110 with the fixed seat 100 respectively. In the embodiment, the fixed seat 100 is provided in plurality, each fixed seat 100 corresponds to one pilot valve 200, each fixed seat 100 and the corresponding pilot valve 200 form one pressure cavity 110, each pressure cavity 110 is communicated with a pressure relief passage 120, and the pressure cavity 110 is communicated with the pressure relief passage 120 through a water flow passage 140. The corresponding pressure relief passage 120 and the water outlet main channel 600 are located in the same water outlet space 12 on the water distribution body 10. In other embodiments, only one fixed seat 100 can be provided, and a plurality of pilot valves 200 are arranged in the fixed seat 100 to form a plurality of independent pressure cavities 110.

[0062] Specifically, the plurality of fixed seats 100 are arranged in a circular array on the water distribution body 10 with the transmission seat 400 as the center, and the pressure cavities 110 in the plurality of fixed seats 100 are independent of each other. The pressure cavity 110 is communicated with the water inlet end 13 through the pilot valve 200, and the water inlet end 13 is selectively communicated with the water outlet main channel 600 corresponding to the fixed seat 100 through the pilot valve 200. When the pressure relief passage 120 is opened, the water in the pressure cavity 110 can flow out through the corresponding pressure relief passage 120, the corresponding pressure cavity 110 can be pressure relieved, and the corresponding 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.

[0063] Specifically, the valve shaft 300 corresponds to the fixed seat 100 one by one and is movably arranged in the fixed seat 100, and can act to block or open the corresponding pressure relief passage 120. The transmission seat 400 and the driving mechanism 500 are in transmission connection, the transmission seat 400 is arranged between the plurality of fixed seats 100 (of course, it can also be arranged above the fixed seat 100), and can rotate to circularly drive the plurality of valve shafts 300 to act. The driving mechanism 500 is arranged on the water distribution body 10 and comprises a button 510, the button 510 is pressed down to drive the transmission seat 400 to rotate, thereby selectively driving one valve shaft 300 to move to open one pressure relief passage 120 to select the flower shower water, the concentrated water or the bubble water. Of course, two valve shafts 300 can be driven to move at the same time to open two pressure relief passages 120, thereby realizing the mixed water outlet of the flower shower water and the concentrated water or the bubble water. Through the above arrangement, the rotation of the transmission seat 400 can be realized by pressing down the button 510, and then the movement of the valve shaft 300 is realized.

[0064] Continue to refer to Figure 2 and Figures 5-7The 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 comprises a mounting column shell 131 and a mounting column inner core 132 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, and the pressure relief channel 120 is formed between the valve shaft 300 and the inner wall of the mounting column inner core 132. The water flow channel 140 is arranged 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, referring to Figure 8 and Figure 9 The pilot valve 200 is annularly provided with an annular gap 210, and the pressure chamber 110 is communicated with the water inlet end 13 through the annular gap 210. The water in the water inlet end 13 can enter the pressure chamber 110 through the annular gap 210. Since the water inlet amount of the annular gap 210 is less than the water outlet amount of the pressure relief channel 120, the movement stroke of the valve shaft 300 will be relatively short, and the switching stroke of the valve shaft 300 can be shortened.

[0066] Further specifically, referring to Figure 9 The inner top of the fixed seat 100 and the pilot valve 200 are provided with an opening and closing elastic element 700. When the water in the pressure chamber 110 flows to the downstream flow passage through the corresponding pressure relief channel 120, in this embodiment, the water in the pressure chamber 110 can flow out of the fixed seat 100 through the corresponding pressure relief channel 120, at this time the pressure in the pressure chamber 110 is less than the pressure of the water inlet end 13, the pilot valve 200 is moved to the inner top of the fixed seat 100 under the action of the water pressure difference between the cross-sectional area S1 of the water inlet end 13 and the cross-sectional area S2 of the corresponding water outlet main flow passage 600, and the opening and closing elastic element 700 is compressed, so that the water inlet end 13 and the corresponding water outlet main flow passage 600 are communicated, at this time the water outlet of the water outlet main flow passage 600 can be realized. That is to say, after the water enters the pressure chamber 110, the opening of the pilot valve 200 is realized only by relying on the small water pressure through the pressure relief of the pressure chamber 110, so as to realize the opening of the water outlet waterway.

[0067] More specifically, referring to Figure 9 and Figure 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, the scale or impurities in the annular gap 210 can be removed during each compression and recovery of the opening and closing elastic element 700, so as to prevent blockage.

[0068] Continuing to refer to Figure 2 and Figures 4-7A plurality of control notches 410 are formed along the circumference of the transmission seat 400. One end of the valve shaft 300 is movably provided with a movable ball 310, and the other end is provided with a pushing elastic element 320. A first sealing ring 330 is annularly arranged on the valve shaft 300, and is arranged corresponding to the water flow passage 140, and can be detachably abut on the abutting slope of the end of the installation column inner core 132, and can be detachably sealed between the pressure relief passage 120 and the pressure cavity 110, i.e. can cut off or open the water flow passage 140. When the transmission seat 400 is rotated to any control notch 410 opposite to the movable ball 310, the movable ball 310 can be moved into the control notch 410, and the valve shaft 300 can be moved towards the direction where the transmission seat 400 is located under the pushing action of the pushing elastic element 320, so as to drive the first sealing ring 330 to move to open the water flow passage 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 abut on the inner wall of the installation column inner core 132. In the embodiment, the second sealing ring 340 and the third sealing ring 350 are both Y-shaped sealing rings. When the water flow passage 140 is in an open state, and the pressure relief passage 120 is communicated with the pressure cavity 110, since the abutting area of the second sealing ring 340 on the inner wall of the installation column inner core 132 and the abutting area of the third sealing ring 350 on the inner wall of the installation column inner core 132 are equal, the valve shaft 300 can be in an axial water pressure balance state at this time, saving the switching force of the user. At this time, the valve shaft 300 is only subjected to the force of the pushing elastic element 320, and when the water outlet waterway is switched, the control notch 410 on the transmission seat 400 only needs to overcome the rolling friction force of the pushing elastic element 320 on the movable ball 310, so as to move the valve shaft 300 to close the water flow passage 140, so as to disconnect the communication between the pressure relief passage 120 and the pressure cavity 110. At this time, the corresponding pilot valve 200 is moved downward under the water pressure of the opening and closing elastic element 700 and the cross-sectional area S2 of the corresponding water outlet main flow passage 600, and the communication between the water outlet main flow passage 600 and the water inlet end 13 is disconnected.

[0070] More specifically, the driving mechanism 500 comprises a ratchet seat 520 and a sliding member 530. The transmission seat 400 is provided with a first ratchet wheel 420, the ratchet seat 520 is provided with a second ratchet wheel 521, the transmission seat 400 is mounted on the ratchet seat 520, the first ratchet wheel 420 is engagedly connected to the second ratchet wheel 521, and the ratchet seat 520 is movable to drive the transmission seat 400 to rotate. The ratchet seat 520 is further provided with a third ratchet wheel 522, the sliding member 530 is provided with a ratchet rack 531, the third ratchet wheel 522 is engagedly connected to the ratchet rack 531, and the sliding member 530 is drivingly connected to the button 510. When the button 510 is pressed, the sliding member 530 is driven to move towards the ratchet seat 520, and the ratchet seat 520 is driven to rotate.

[0071] More specifically, 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 distribution body 10. When the button 510 is pressed, the reset elastic element 540 is compressed, and the reset elastic element 540 is further capable of restoring to the original state when the pressure on the button 510 is removed, to drive the sliding member 530 to reset. The ratchet rack 531 cooperates with the third ratchet wheel 522 to drive the ratchet seat 520 to rotate and reset, and drive the second ratchet wheel 521 to rotate reversely. The transmission seat 400 moves upwards under the cooperation of the first ratchet wheel 420 and the second ratchet wheel 521, to make the first ratchet wheel 420 and the second ratchet wheel 521 disengage. The supporting elastic element 560 is arranged between the transmission seat 400 and the water distribution 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 on and engage with the ratchet seat 520 after the first ratchet wheel 420 and the second ratchet wheel 521 disengage, the transmission seat 400 rotates relative to the ratchet seat 520, and the transmission seat 400 remains in the switched position.

[0072] More specifically, the driving mechanism 500 further comprises a swing lever 550, which is movably connected to the button 510 and abuts against the sliding member 530 in a swingable manner. When the button 510 is pressed, the swing lever 550 is driven to swing, to push the sliding member 530 to move.

[0073] Continuing to refer to Figure 1 and Figure 4 the first ratchet teeth of the first ratchet wheel 420 are provided with a first inclined guide surface, and the second ratchet teeth of the second ratchet wheel 521 are provided with a second inclined guide surface. The first inclined guide surface is movable along the second inclined guide surface, to make the first ratchet teeth disengage or engage with the second ratchet teeth.

[0074] Press the button 510, the button 510 drives the swing lever 550 to rotate counterclockwise, the swing lever 550 rotates and drives the sliding piece 530 to move left against the elastic force of the reset elastic element 540, the reset elastic element 540 is compressed to store force, the ratchet bar 531 on the sliding piece 530 cooperates with the third ratchet wheel 522 on the ratchet wheel seat 520, because the ratchet wheel seat 520 cooperates with the transmission seat 400 through the second ratchet wheel 521 and the first ratchet wheel 420, therefore, the sliding piece 530 can drive the ratchet wheel seat 520 and the transmission seat 400 to rotate counterclockwise by one ratchet angle, at this time, the control slot 410 on the transmission seat 400 keeps in the switched position under the action of the movable ball 310. After the pressing force applied on the button 510 is removed, the sliding piece 530 resets under the action of the reset elastic element 540. Because of the cooperation of the ratchet bar 531 and the third ratchet wheel 522, the sliding piece 530 can drive the ratchet wheel seat 520 to rotate reversely clockwise during the resetting process. During the reverse rotation process of the ratchet wheel seat 520, because of the cooperation of the second ratchet wheel 521 and the first ratchet wheel 420, the transmission seat 400 moves up against the support elastic element 560, until the ratchet wheel seat 520 reversely rotates by one ratchet angle, the transmission seat 400 moves down to the next switching initial position under the action of the support elastic element 560, so that the rotation of the transmission seat 400 is realized. The transmission seat 400 rotates once every time the button 510 is pressed once, and each control slot 410 on the transmission seat 400 can be sequentially aligned with the movable ball 310 on the plurality of valve shafts 300 in sequence, so as to realize the sequential opening and closing of the plurality of water flow channels 140.

[0075] It should be noted that in the embodiment, switching of three water outlet channels can be realized, and the water distribution body 10 is provided with three fixed seats 100. Corresponding to the three pilot valves 200 and the 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 the first ratchet teeth of the first ratchet wheel 420 is 360 / 15=24, and the number of the second ratchet teeth of the second ratchet wheel 521 on the ratchet wheel seat 520 is a common factor (except 1) of 24. In the embodiment, the number of the ratchet teeth of the second ratchet wheel 521 is 12, and the number of the control slots 410 on the ratchet wheel seat 520 is 360 / (15*3)=8.

[0076] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be carried out without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A waterway switching device, characterized by, The utility model relates to a waterway switching device, including: Fixed seat (100) and multiple pilot valve (200), multiple pilot valve (200) respectively with fixed seat (100) form multiple independent pressure chamber (110), pressure chamber (110) are communicated with pressure relief channel (120);Pressure chamber (110) are communicated with water inlet end (13) through pilot valve (200); Multiple valve shafts (300), the valve shaft (300) one to one corresponds to pressure chamber (110), can block or open corresponding pressure relief channel (120);Pressure relief channel (120) open, corresponding pressure chamber (110) pressure relief, pilot valve (200) moves under the action of water pressure makes water inlet end (13) and corresponding water outlet main flow channel (600) are communicated;Water in pressure chamber (110) can flow to downstream flow channel through corresponding pressure relief channel (120).

2. The water passage switching device according to claim 1, characterized by The waterway switching device further includes a transmission seat (400) and a drive mechanism (500) connected in transmission, the drive mechanism (500) can drive the transmission seat (400) to act, selectively drive the valve shaft (300) to move to open the corresponding pressure relief channel (120), so that the corresponding pressure chamber (110) is pressure relieved.

3. The water route switching device according to claim 2, characterized by A plurality of control notches (410) are formed along the circumference of the transmission seat (400), one end of the valve shaft (300) is movably provided with a movable ball (310), the other end is provided with a push elastic element (320), the valve shaft (300) is annularly provided with a first sealing ring (330), the first sealing ring (330) is separably blocked between the pressure relief channel (120) and the pressure chamber (110); When the transmission seat (400) is rotated to face any control notch (410) opposite the movable ball (310), the movable ball (310) can be moved into the control notch (410), and the valve shaft (300) can be moved towards the direction where the transmission seat (400) is located under the pushing action of the push elastic element (320), so as to drive the first sealing ring (330) to move to open the channel between the pressure relief channel (120) and the pressure chamber (110).

4. The water route switching device according to claim 3, characterized by The fixed seat (100) is provided with 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), the second sealing ring (340) and the third sealing ring (350) are arranged on both sides of the first sealing ring (330) on the valve shaft (300) respectively, and the second sealing ring (340) and the third sealing ring (350) abut against the inner wall of the valve shaft mounting column (130) respectively.

5. The water route switching device according to claim 2, characterized by The driving mechanism (500) comprises a ratchet seat (520), a button (510) and a sliding piece (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 installed on the ratchet seat (520), the first ratchet (420) is engagedly connected to the second ratchet (521), the ratchet seat (520) is driven and can drive the transmission seat (400) to rotate; The ratchet seat (520) is further provided with a third ratchet (522), the sliding piece (530) is provided with a ratchet rack (531), the third ratchet (522) is engagedly connected to the ratchet rack (531), the sliding piece (530) is drivingly connected to the button (510), the button (510) is pressed downwards, can drive the sliding piece (530) to move towards the ratchet seat (520), and can drive the ratchet seat (520) to rotate.

6. The water route switching device according to claim 5, characterized by The driving mechanism (500) further comprises a reset elastic element (540) and a supporting elastic element (560), the sliding piece (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 distribution body (10), the button (510) is pressed downwards, the reset elastic element (540) can be compressed, and the reset elastic element (540) can also restore to the original state when the pressure on the button (510) is removed, so as to drive the sliding piece (530) to reset, and the transmission seat (400) remains at the switched position; The ratchet rack (531) cooperates with the third ratchet (522), can drive the ratchet seat (520) to rotate and reset, and drive the second ratchet (521) to rotate reversely, and the transmission seat (400) moves upwards under the cooperation of the first ratchet (420) and the second ratchet (521), so that the first ratchet (420) is disengaged from the second ratchet (521); The supporting elastic element (560) is arranged between the transmission seat (400) and the water distribution body (10), and the supporting elastic element (560) can pull the transmission seat (400) to be seated and engaged on the ratchet seat (520) after the first ratchet (420) is disengaged from the second ratchet (521) and the transmission seat (400) rotates relative to the ratchet seat (520).

7. The waterway switch according to claim 5, wherein The driving mechanism (500) further comprises a swing rod (550), the swing rod (550) is movably connected to the button (510) and abuts on the sliding piece (530) swingably, the button (510) is pressed downwards, can drive the swing rod (550) to swing, so as to push the sliding piece (530) to move.

8. The water route switching device according to claim 5, wherein The first ratchet of the first ratchet wheel (420) is provided with a first inclined guide surface, and the second ratchet of the second ratchet wheel (521) is provided with a second inclined guide surface, the first inclined guide surface being capable of moving along the second inclined guide surface to disengage or engage the first ratchet with the second ratchet.

9. The waterway switch according to claim 5, wherein The number of teeth of the second ratchet of the second ratchet wheel (521) is a common factor of the number of teeth of the first ratchet of the first ratchet wheel (420).

10. The waterway switch according to claim 1, wherein The pilot valve (200) is annularly provided with an annular gap (210), and the pressure cavity (110) is communicated with the water inlet end (13) through the annular gap (210). An opening and closing elastic element (700) is arranged between the top of the fixed seat (100) and the pilot valve (200), and a dredging rod (710) is arranged on the opening and closing elastic element (700), the dredging rod (710) being capable of extending and retracting in the annular gap (210), and when the pilot valve (200) moves towards the top of the fixed seat (100) under the action of water pressure, the water inlet end (13) is communicated with the water outlet main flow channel (600).

11. The water route switching device according to claim 2, characterized by The fixed seat (100) is provided with a plurality of transmission seats (400), and the plurality of valve shafts (300) are arranged in an array around the transmission seat (400), and the transmission seat (400) is capable of rotating to cyclically drive the valve shaft (300) to act.

12. A showerhead, characterized by The water distribution body (10) is provided with a plurality of separation structures (11), and the separation structures (11) divide the water distribution body (10) into a plurality of water outlet spaces (12), and the pressure relief channel (120) and the water outlet main flow channel (600) corresponding to each other are located in the same water outlet space (12). The shower further comprises a shower body (50), a water distribution seat (20), a water nozzle (30) and a face cover (40), the water distribution body (10) is arranged in the shower body (50), the water distribution seat (20) is connected to the lower part of the water distribution body (10) in a buckling manner, the water nozzle (30) is connected to the lower part of the water distribution seat (20) in a buckling manner, the face cover (40) is connected to the lower part of the water nozzle (30) in a buckling manner, and the water flowing out of the water distribution body (10) can flow out of the shower through the water distribution seat (20), the water nozzle (30) and the face cover (40) in sequence.

13. The showerhead of claim 12, wherein, ​

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