Water channel switching mechanism and shower head including the same

Abstract

The present invention discloses a waterway switching mechanism and a shower head including the waterway switching mechanism. The waterway switching mechanism includes a fixed part and a rotating block connected to the fixed part. The fixed part is provided with a plurality of switching positions, each of which is provided with a sealing part that can move relative to the fixed part along a first direction, and the waterway switching is controlled by the movement of the sealing part. A pushing part is convexly provided on the outer peripheral wall of the rotating block, and the plurality of sealing parts are arranged at intervals in the circumferential direction and surrounded outside the rotating block. Each sealing part is provided with a matching part that can cooperate with the pushing part. When the rotating block rotates, the pushing part follows the rotating block to make a circumferential movement, and the matching part is driven to move in the first direction through the circumferential movement of the pushing part, and the first direction intersects with a vertical plane perpendicular to the rotating axis of the rotating block. It has the following advantages: reasonable layout, more compact structure, reduced friction, and extended service life.

Description

Technical Field

[0001] The invention relates to a water channel switching mechanism, and in particular to a water channel switching mechanism and a shower head comprising the water channel switching mechanism. Background Art

[0002] The existing waterway switching mechanism includes a fixed part and a rotating shaft, and the rotating shaft is connected to the fixed part; the fixed part is provided with a plurality of water diversion holes, and each of the water diversion holes is provided with a sealing part that can move axially relative to the fixed part, and the waterway switching is controlled by the movement of the sealing part; the plurality of sealing parts are arranged circumferentially around the axis of the rotating shaft, and the circumferentially arranged sealing parts and the rotating shaft are arranged along the axis; the end face of the rotating shaft is concavely provided with a groove, and the groove is selected to align with a certain sealing part by rotating the rotating shaft, and the sealing part moves into the groove to open the water diversion hole, thereby realizing the switching, and the specific structure is as shown in CN204083300U. The waterway switching mechanism has the following shortcomings: 1. The distance along the axis is long, the space occupied is large, and the use occasions are limited; 2. The end face of the rotating shaft and the fixed part are in surface contact, and the wear and friction are large during rotation.

[0003] Another existing waterway switching mechanism is different from the above-mentioned waterway switching mechanism in that: the multiple sealing parts surround the rotating shaft, the movable direction of the sealing parts is radial, and a cam mechanism is provided at the rotating shaft, and the outer peripheral surface of the cam abuts against the sealing parts to drive the sealing parts to move and realize switching, and the specific structure is shown in CN205013826U. The waterway switching mechanism also has the following shortcomings: the sealing parts move radially, the radial distance is large, the space occupied is large, and the use occasions are limited. Summary of the invention

[0004] The present invention provides a water channel switching mechanism and a shower head including the water channel switching mechanism, which overcome the shortcomings of the water channel switching mechanism and the shower head including the water channel switching mechanism in the background art.

[0005] One of the technical solutions adopted by the present invention to solve its technical problem is:

[0006] The waterway switching mechanism includes a fixed part, which is provided with a plurality of switching positions, each of which is equipped with a sealing part that can move relative to the fixed part along a first direction, and the waterway switching is controlled by the movement of the sealing part; it also includes a rotating block connected to the fixed part, the outer peripheral wall of the rotating block is convexly provided with a pushing part, the plurality of sealing parts are arranged at intervals in the circumferential direction and surrounded by the rotating block, each of the sealing parts is provided with a matching part that can cooperate with the pushing part, when the rotating block rotates, the pushing part follows the rotating block to make a circumferential movement, and the matching part is driven to move in the first direction through the circumferential movement of the pushing part, and the first direction intersects with a vertical plane perpendicular to the rotation axis of the rotating block.

[0007] In one embodiment: each sealing part is provided with an elastomer that can act on the sealing part to generate an elastic force toward the switching position, and the positive circumferential movement of the pushing part drives the mating part to move positively along the first direction and causes the elastomer to store energy and compress, and the elastomer can release energy and drive the sealing part to move negatively along the first direction to reset.

[0008] In one embodiment, the rotation axis of the rotating block is parallel to the first direction.

[0009] In one embodiment: a protrusion is convexly provided on the outer peripheral wall of the rotating block, and the protrusion has a positive guide surface and a negative guide surface, and the positive guide surface and the negative guide surface are connected together; the positive guide surface extends circumferentially along the positive direction of the rotating axis of the rotating block, and the height also gradually advances in the first direction in a positive direction, and the negative guide surface extends circumferentially along the positive direction of the rotating axis of the rotating block, and the height also gradually retreats in the first direction in a positive direction, and the matching part is driven to move in the positive direction in the first direction through the positive guide surface and the circumferential movement, and the matching part is driven to move in the negative direction in the first direction through the negative guide surface and the circumferential movement.

[0010] In one embodiment: the outer peripheral wall of the rotating block is convexly provided with an annular protrusion, the upper annular surface of the annular protrusion is fixedly provided with a protrusion, the protrusion has a positive guide surface, and the positive guide surface extends in the positive circumferential direction along the rotating axis of the rotating block, and the height is also progressive in the first direction.

[0011] In one embodiment, the matching portion includes a lug protruding from the outer peripheral surface of the sealing portion, and the lug and the pushing portion can match each other.

[0012] In one embodiment: a guide mechanism is provided between the fixing portion and the sealing portion.

[0013] In one embodiment: the fixed part includes a water diversion channel part and a fixed seat, the fixed seat and the water diversion channel part are fixed together and form a water diversion chamber; the part of the water diversion channel part corresponding to the water diversion chamber is provided with the above-mentioned switching position, at least one switching position is a water diversion hole, and at least one water diversion channel corresponding to the water diversion hole is provided in the water diversion channel part; the rotating block can be rotatably connected to the water diversion channel part and extend out of the fixed seat.

[0014] In one embodiment: the bottom surface of the fixed seat is concavely provided with a groove, the sealing part is provided with a hollow hole penetrating up and down, the outer wall of the sealing part is provided with an upper sealing ring and a lower sealing ring spaced up and down, the upper part of the sealing part is always adapted to be slidably connected in the groove, and the lower sealing ring is controlled by the up and down movement of the sealing part to seal the switching position to close the switching position or to move away from the switching position to open the switching position.

[0015] In one embodiment, at least one of the water channels is provided with at least two water outlets, and at least two of the water outlets are provided with one-way valves.

[0016] In one embodiment, the at least one switching position is a blind hole.

[0017] In one embodiment, a driving mechanism is also included, and the driving mechanism includes an intermittent motion mechanism, and the intermittent motion mechanism is transmission-connected to the rotating block to drive the rotating block to rotate in the forward direction.

[0018] In one embodiment, the intermittent motion mechanism includes a ratchet and pawl mechanism.

[0019] In one embodiment: the intermittent motion mechanism includes a rack, a first turntable and a second turntable, the peripheral wall of the first turntable is formed with gear teeth, and the rack is meshed with the first turntable; the end surface of the first turntable is provided with a first ratchet tooth, and the end surface of the second turntable is provided with a second ratchet tooth, and the first ratchet tooth and the second ratchet tooth are meshed with each other.

[0020] In one embodiment: the intermittent motion mechanism includes a pull rod, a first turntable and a second turntable, the pull rod and the first turntable cooperate and the first turntable is driven to rotate through the movement of the pull rod; the end surface of the first turntable is provided with a first ratchet, the end surface of the second turntable is provided with a second ratchet, and the first ratchet and the second ratchet are meshed.

[0021] The second technical solution adopted by the present invention to solve its technical problem is:

[0022] The waterway switching mechanism comprises a fixed part, which is provided with a plurality of switching positions, each of which is equipped with a sealing part that can move relative to the fixed part in a first direction, and the waterway switching is controlled by the movement of the sealing part; it also comprises a rotating block connected to the fixed part, the outer peripheral wall of which is convexly provided with a pushing part, and the pushing part has a positive guide surface, and the positive guide surface is extended circumferentially in the positive direction along the rotation axis of the rotating block, and the height is also progressive in the positive direction toward the end of the rotating block. The plurality of sealing parts are arranged circumferentially at intervals and surrounded by the rotating block, and each sealing part is provided with a matching part that can match the positive guide surface. When the rotating block rotates, the positive guide surface follows the rotating block to make circumferential movement, and the matching part is driven to move in the first direction through the circumferential movement of the positive guide surface.

[0023] The third technical solution adopted by the present invention to solve the technical problem is:

[0024] A shower head including the above-mentioned water channel switching mechanism is characterized in that it also includes a face cover and a body, the body having a handle portion and a rear cover, the face cover and the rear cover are fixed together and form an installation space, the fixed portion is installed in the installation space, and an operating member is further provided, the operating member is movably connected to the fixed portion and the rotating block is driven to rotate through the movement of the operating member.

[0025] Compared with the background technology, this technical solution has the following advantages:

[0026] Multiple sealing parts are arranged at intervals in the circumference and surround the rotating block. The first direction intersects with the vertical plane perpendicular to the rotating axis of the rotating block. When the rotating block rotates, the pushing part follows the rotating block to make circumferential movements, and the matching part is driven to move along the first direction through the circumferential movement of the pushing part. The layout is reasonable and the structure is compact, which not only avoids long axial distances, but also avoids large radial distances, and has a wide range of applications. Moreover, when the rotating block rotates, the friction force, in addition to avoiding the connection, is only the matching part and the pushing part, which reduces the contact area, reduces the friction force, and prolongs the service life.

[0027] The pushing part has a positive guide surface, which extends circumferentially in the positive direction of the rotating axis of the rotating block, and the height is also progressive in the positive direction toward the end of the rotating block. Multiple sealing parts are arranged circumferentially at intervals and surrounded by the rotating block. Each sealing part is provided with a matching part that can cooperate with the positive guide surface. When the rotating block rotates, the positive guide surface follows the rotating block to make circumferential motion, and the matching part is driven to move along the first direction through the circumferential motion of the positive guide surface. The layout is reasonable and the structure is compact, which not only avoids long axial distances, but also avoids large radial distances. It has a wide range of uses, reduces contact area, reduces friction, and extends service life.

[0028] The rotating axis of the rotating block is parallel to the first direction, the layout is reasonable, and the structure is more compact.

[0029] The protrusion has a positive guide surface, and the matching part is driven to move positively along the first direction through the positive guide surface and the circumferential movement, thereby reducing friction, saving effort, and having high operating accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is a three-dimensional schematic diagram of a shower head.

[0032] Figure 2 It is a partial three-dimensional exploded diagram of the shower head.

[0033] Figure 3 It is a three-dimensional schematic diagram of the partial assembly of the shower head.

[0034] Figure 4 It is a three-dimensional schematic diagram of the rotating block.

[0035] Figure 5 It is a three-dimensional schematic diagram of the sealing part.

[0036] Figure 6 It is a top view schematic diagram of the partial assembly of the shower head.

[0037] Figure 7 yes Figure 6 AA cross-sectional diagram of , at this time the water diversion hole is in the open state.

[0038] Figure 8 yes Figure 6 Schematic diagram of the BB cross section.

[0039] Fig. 9 It is a cross-sectional diagram of a shower head.

[0040] Fig.10 yes Figure 6 AA cross-sectional diagram of , at this time the water diversion hole is in a closed state.

[0041] Fig.11 Schematic diagram of the structure of the driving mechanism of the second embodiment.

[0042] Fig.12 Schematic diagram of the structure of the driving mechanism of the third embodiment.

[0043] Figure 13-1 4 is a schematic diagram of the structure of the driving mechanism of the fourth embodiment.

[0044] Figure 13-2 4 is a schematic structural diagram of the first rotating disk of the fourth embodiment.

[0045] Figure 13-3 4 is a schematic structural diagram of the second turntable of the fourth embodiment.

[0046] Fig.14 4 is a schematic structural diagram of the driving mechanism of the fifth embodiment. DETAILED DESCRIPTION

[0047] Waterway switching mechanism, please refer to Figures 2 to 8 and Fig.10, comprising a fixed part 10, a rotating block 20 connected to the fixed part 10, and a driving mechanism 50. The fixed part 10 is provided with a plurality of switching positions, each of which is provided with a sealing part 30 that can move relative to the fixed part 10 along a first direction, and each of which is provided with an elastic body 40 that can act on the sealing part 30 to generate an elastic force toward the switching position, and the waterway switching is controlled by the movement of the sealing part 30. The plurality of sealing parts 30 are arranged at intervals in the circumferential direction and surrounded by the rotating block 20, and the rotation axis of the rotating block 20 is parallel to the first direction in which the sealing part 30 moves. The outer peripheral wall of the rotating block 20 is convexly provided with a pushing portion 21, and the pushing portion 21 has a positive guide surface 211. The positive guide surface 211 extends circumferentially in the positive direction of the rotation axis of the rotating block 20, and the height thereof gradually increases. If it is a spiral structure, the spiral structure may not be adopted as needed, as long as the above conditions are met; the multiple sealing portions 30 are arranged at intervals in the circumferential direction and surrounded by the rotating block 20, and the first direction intersects with a vertical plane perpendicular to the rotation axis of the rotating block 20. If the first direction intersects with the vertical plane perpendicular to the rotation axis of the rotating block 20 perpendicularly, it is as shown in the accompanying drawings of this embodiment. According to needs, it may also be a non-perpendicular intersection, and the corresponding first direction may also intersect with the rotation axis of the rotating block 20 non-perpendicularly. Each sealing part 30 is provided with a matching part 31 that can match the positive guide surface 211. When the rotating block 20 rotates, the positive guide surface 211 follows the rotating block 20 to make circumferential motion. The positive guide surface 211 circumferentially moves against the matching part 31, so that the sealing part 30 moves positively along the first direction and the elastomer 40 stores energy and is compressed. When the positive guide surface 211 and the matching part 31 are separated, the elastomer 40 releases energy and drives the sealing part 30 to move negatively along the first direction to reset.

[0048] In a specific structure: a protrusion 212 is convexly provided on the outer peripheral wall of the rotating block 20, and the protrusion 212 has the above-mentioned positive guide surface 211 and negative guide surface 213, and the positive guide surface 211 and the negative guide surface 213 are connected together so that the top end is a vertex structure; the negative guide surface 213 is extended in the positive circumferential direction along the rotation axis of the rotating block 20, and the height is gradually reduced. The positive guide surface 211 and the circumferential movement drive the matching part 31 to move in the positive direction along the first direction, and the negative guide surface 213 and the circumferential movement drive the matching part 31 to cooperate with the elastic body 40 to release energy and move gradually in the negative direction along the first direction, thereby avoiding one-step reset, reducing noise, and avoiding instantaneous water outage, thereby extending the service life. In a further specific structure, an annular protrusion 214 is convexly provided on the outer peripheral wall of the rotating block 20, and the above-mentioned protrusion 212 is fixedly provided on the upper annular surface of the annular protrusion 214, and the above-mentioned positive guide surface and negative guide surface are provided on the upper surface of the protrusion 212, and the mating part 31 is abutted against the upper annular surface, positive guide surface and negative guide surface of the annular protrusion 214.

[0049] In a specific structure, the matching portion 31 includes a lug protruding from the outer peripheral surface of the sealing portion 30, and the lug and the pushing portion can match each other.

[0050] A guiding mechanism is provided between the fixing part 10 and the sealing part 30, such as a second lug 32 protruding from the outer peripheral surface of the mating part 31. The fixing part 10 is provided with at least one pair of spaced apart protrusions 11, and the second lug 32 is adapted to slide within the pair of protrusions 11 to ensure that the sealing part 30 moves along the first direction.

[0051] The fixed part 10 includes a water diversion path part and a fixed seat 12. The water diversion path part includes a water diversion body 13 and a water diversion plate 14. The water diversion body 13 and the water diversion plate 14 are fixed together to form a plurality of water diversion paths 15. The water diversion body 13 is provided with a groove, such as a surrounding wall convexly provided on the water diversion body, and the surrounding wall is provided with the groove. The fixed seat 12 is fixed on the water diversion body 13 so that the groove forms a water diversion chamber 16. The position of the water diversion body 13 corresponding to the water diversion chamber 16 is provided with the above-mentioned switching position, such as the bottom of the groove. The rotating block 20 can be rotatably connected to the water diversion body 13 and extend from the water diversion chamber 16 to the outside of the fixed seat. The sealing part 30 can be slidably connected in the water diversion chamber 16. In this embodiment: part of the switching positions are water diversion holes 17, and the water diversion holes 17 are connected to a water diversion path 15, wherein: a water diversion hole 17 is connected to a water diversion path 15, so that when the water diversion hole 17 is opened, corresponding water splashes of the water diversion path are discharged, or, there is another switching position that is a blind hole, and the water is turned off when switching to this switching position.

[0052] Further in the present embodiment: the water branch path 15 corresponding to the combined water splash comprises at least two water outlets, each of which is provided with a one-way valve 18 to prevent the water flow from the water outlet chamber from flowing back into the water branch path, and each water outlet is connected to a water outlet chamber, which produces corresponding water splashes, and different water outlet chambers can produce different water splashes as needed; for example: a water branch path is connected to two water outlets, then when the water branch path is opened, the water outlet chambers of the two water outlets will discharge water at the same time to produce a combined water splash. This embodiment can realize a single function and any desired group of mixed water combinations, that is, N single functions can be equipped with 1-N mixed water functions, the water splash combination has good versatility, and the water splash configuration is rich (it can realize water splash configurations of more than 4 single functions; realize any single function + any desired mixed water (the total number should not be greater than 6); realize complete water stopping requirements), overcoming the problem that it is difficult to realize the circulation switching of single functions and any desired mixed water when switching traditional water dividing plates; in addition, each time the button is pressed, only one sealing part moves up to divide the water, and the sealing contact area is small, which greatly improves the life of the button switching (it can realize high-standard life test requirements: CSA standard can pass 150,000 press life tests (mixed water); can pass 250,000 press life tests (complete water stopping)), overcoming the problem that the rotating water dividing plate when switching traditional water dividing plates is the friction between plastic parts and rubber parts, the friction coefficient is large, and the friction force is large.

[0053] The driving mechanism 50 includes an intermittent motion mechanism, which is connected to the rotating block to drive the rotating block to rotate forwardly. The intermittent motion mechanism includes a ratchet pawl mechanism, and the specific structure is as follows: the ratchet pawl mechanism includes a ratchet 51 fixed to the extended part of the rotating block 20 (such as the fixed seat 12), a pawl 52 and a sliding seat 53; one end of the pawl 52 is rotatably connected to the fixed part 10, such as the top surface of the fixed seat 12, and the end of the pawl 52 can abut against the ratchet teeth of the ratchet 51; the sliding seat 53 can slide relative to the fixed part, such as sliding relative to the fixed seat, and the head end of the sliding seat 53 abuts against the middle of the pawl to make the pawl move, so that the end of the pawl abuts against the ratchet teeth of the ratchet 51, so as to drive the ratchet 51 to rotate forward to a predetermined angle. According to needs, it also includes a buckle cover 121, which can be attached to the fixed part, and the cover plate of the buckle cover is located on the ratchet to prevent the ratchet, pawl, etc. from detaching from the fixed part.

[0054] In a specific structure, in order to make the structure more compact, the bottom surface of the outer portion of the water diversion body is recessed upward to form a cavity 131, which is used to install a one-way valve. The cavities are surrounded by the surrounding wall to form a compact structure.

[0055] In a specific structure, the bottom surface of the fixed seat is concavely provided with a groove 123, the sealing part 30 is provided with a hollow hole 33 running through from top to bottom, the outer wall of the sealing part 30 is provided with an upper sealing ring 34 and a lower sealing ring 35 spaced apart from top to bottom, the upper part of the sealing part 30 is always adapted to be slidably connected in the groove 123, and the lower sealing ring 35 is controlled by the sealing part 30 to move up and down to seal the water diversion hole to close the water diversion hole or to move away from the water diversion hole to open the water diversion hole. The upper sealing ring is such as a Y-shaped sealing ring, and the lower sealing ring is such as a circular sealing ring. Moreover, the outer wall is a cylindrical structure. With this specific structure, the water diversion hole can achieve water pressure balance regardless of whether it is in the water-passing state or the water-stopping state.

[0056] Please refer to Figures 1 to 10A shower head including the above-mentioned water channel switching mechanism also includes a face cover 60 and a body 70, the body 70 has a handle portion 71 and a rear cover 72, the face cover 60 and the rear cover 72 are fixed together and form an installation space, the fixed portion 10 is assembled in the installation space; an operating member 80 is also provided, the operating member 80 is movably connected to the fixed portion 10, and the rotating block 20 is driven to rotate through the movement of the operating member 70. In the specific structure: the face cover 60 is provided with a water outlet, and the water diversion channel discharges water through the water outlet; the operating member 80 can be pressed and movably connected to the fixed seat 12 of the fixed part 10, such as the operating member 80 is slidably connected to the fixed seat 12, or is swingably connected to the fixed seat; there is also a swinging member 54 rotatably connected to the fixed part 10, and the two ends of the swinging member 54 are respectively provided with opposite top abutting ends, one end of the operating member 80 abuts against the top abutting end, and the other top abutting end is driven and connected to the intermittent motion mechanism, such as abutting against the rear end of the sliding seat 53, then the swinging member can be driven to swing through the movement of the operating member 80, the sliding seat can be driven to slide through the swinging member, the ratchet can be driven to move through the sliding seat, the ratchet can be driven to rotate, and the sealing part can be driven to move to achieve switching. Further, as needed: the ratchet pawl mechanism is also provided with a second elastic body 55 capable of resetting the sliding seat, the second elastic body is connected between the fixed part 10 and the sliding seat, the tail end of the sliding seat extends downward with a baffle, the second elastic body is pressed between the fixed part and the baffle, and the swinging member is pressed against the baffle of the sliding seat; the fixed seat 12 is fixedly extended with two separate forked parts 122, the ends of the two forked parts 122 are integrated together to form a water inlet pipe, and the sliding seat is connected between the two forked parts; a water inlet path is also provided, and the water inlet path is from the water inlet pipe, the forked part, the fixed seat to the water diversion chamber.

[0057] Please refer to Fig.11 , which illustrates a second embodiment, which differs from the first embodiment in that it also includes a stop claw 59, one end of which is rotatably connected to the fixed seat, and the other end of which can abut against the ratchet teeth of the ratchet wheel to keep the ratchet wheel in position after rotating into position.

[0058] Please refer to Fig.12 , which depicts the third embodiment, which differs from the second embodiment in that: the pawl 521 is fixedly connected to the sliding seat, and the pawl 521 can abut against the ratchet teeth of the ratchet wheel. Pressing the button drives the pawl to move leftward (the pawl will deform upward when it moves leftward), and the pawl drives the ratchet wheel to rotate counterclockwise. The rotating block is fixedly connected to the ratchet wheel, so the rotating block also rotates counterclockwise to achieve function switching; after releasing the hand, the pawl is reset under the action of the reset spring (the pawl will deform upward when it moves leftward), and the ratchet wheel does not move under the action of the stop claw, thus achieving intermittent rotation of the ratchet wheel.

[0059] Please refer to Figure 13-1 , Figure 13-2 , Figure 13-3, which depicts the fourth embodiment, which is different from the first embodiment in that: the intermittent motion mechanism includes a rack 56, a first rotating disk 57 and a second rotating disk 58, the peripheral wall of the first rotating disk 57 is formed with gear teeth 571, the rack 56 and the first rotating disk 57 are meshed; the end surface of the first rotating disk is provided with a first ratchet 572, the end surface of the second rotating disk is provided with a second ratchet 581, the first ratchet and the second ratchet are meshed and form a clutch (engaged state and inactive state). The rack is fixed on the sliding seat 53, and the first rotating disk 57 is driven to move counterclockwise by the positive rotation of the rack 56, the clutch handles the meshing state, and drives the second rotating disk 58 to move counterclockwise; after letting go, under the elastic force of the second elastic body, the rack resets to the reverse direction, drives the first rotating disk 57 to move clockwise, the clutch is inactive, and the first rotating disk 57 is idle.

[0060] Please refer to Fig.14 , which depicts the fifth embodiment, which is different from the fourth embodiment in that: the intermittent motion mechanism includes a pull rod 561, a first turntable 57 and a second turntable 58, the pull rod cooperates with the first turntable and drives the first turntable to rotate through the pull rod movement; the first turntable end surface is provided with a first ratchet, the second turntable end surface is provided with a second ratchet, and the first ratchet and the second ratchet are meshed. In the specific structure, one end of the pull rod 561 is rotatably connected to the sliding seat, and the other end is rotatably connected to the first turntable, and the pull rod 561 drives the first turntable to rotate counterclockwise, and drives the second turntable to rotate counterclockwise; the pull rod resets and drives the first turntable to idle.

[0061] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A waterway switching mechanism, comprising a fixed part, the fixed part being provided with a plurality of switching positions, each of the switching positions being provided with a sealing part capable of moving relative to the fixed part in a first direction, and the waterway switching is controlled by the movement of the sealing part; characterized in that: It also includes a rotating block connected to the fixed part, the outer peripheral wall of the rotating block is convexly provided with a pushing part, the multiple sealing parts are arranged circumferentially at intervals and surrounded by the rotating block, each sealing part is provided with a matching part that can cooperate with the pushing part, when the rotating block rotates, the pushing part follows the rotating block to make circumferential movement, and the matching part is driven to move along a first direction through the circumferential movement of the pushing part, and the first direction intersects with a vertical plane perpendicular to the rotation axis of the rotating block.

2. The waterway switching mechanism according to claim 1, characterized in that: Each sealing part is provided with an elastomer that can act on the sealing part to generate an elastic force toward the switching position. The positive circumferential movement of the pushing part drives the matching part to move positively along the first direction and compresses the elastomer to store energy. The elastomer can release energy and drive the sealing part to move negatively along the first direction to reset.

3. The waterway switching mechanism according to claim 1, characterized in that: The rotation axis of the rotating block is parallel to the first direction.

4. The waterway switching mechanism according to claim 2, characterized in that: A protrusion is convexly provided on the outer peripheral wall of the rotating block, and the protrusion has a positive guide surface and a negative guide surface, and the positive guide surface and the negative guide surface are connected together; the positive guide surface extends along the positive circumference of the rotating axis of the rotating block, and the height of the positive guide surface is gradually increased along the positive circumference, and the negative guide surface extends along the positive circumference of the rotating axis of the rotating block, and the height of the negative guide surface is gradually decreased along the positive circumference, and the matching part is driven to move in the positive direction along the first direction through the positive guide surface and the circumferential movement, and the matching part is driven to move in the negative direction along the first direction through the negative guide surface and the circumferential movement.

5. The waterway switching mechanism according to claim 1, characterized in that: The outer peripheral wall of the rotating block is convexly provided with an annular protrusion, and the upper annular surface of the annular protrusion is fixedly provided with a protrusion, and the protrusion has a positive guide surface, which extends along the positive circumferential direction of the rotating axis of the rotating block and the height of the positive guide surface is gradually increased along the positive circumferential direction.

6. The waterway switching mechanism according to claim 1, characterized in that: The matching part comprises a lug protruding from the outer peripheral surface of the sealing part, and the lug can match with the pushing part.

7. The waterway switching mechanism according to claim 1, characterized in that: A guiding mechanism is arranged between the fixing part and the sealing part.

8. The waterway switching mechanism according to claim 1, characterized in that: The fixed part includes a water diversion channel part and a fixed seat, the fixed seat and the water diversion channel part are fixed together and form a water diversion cavity; the position of the water diversion channel part corresponding to the water diversion cavity is provided with the above-mentioned switching position, at least one switching position is a water diversion hole, and at least one water diversion channel corresponding to the water diversion hole is provided in the water diversion channel part; the rotating block can be rotatably connected to the water diversion channel part and extend out of the fixed seat.

9. The waterway switching mechanism according to claim 8, characterized in that: The bottom surface of the fixed seat is concavely provided with a groove, the sealing part is provided with a hollow hole running through it from top to bottom, the outer wall of the sealing part is provided with an upper sealing ring and a lower sealing ring spaced apart from each other, the upper part of the sealing part is always adapted to be slidably connected in the groove, and the lower sealing ring is controlled by the up and down movement of the sealing part to seal the switching position to close the switching position or to move away from the switching position to open the switching position.

10. The waterway switching mechanism according to claim 8, characterized in that: The at least one water channel is provided with at least two water outlets, and at least two water outlets are provided with one-way valves.

11. The waterway switching mechanism according to claim 8, characterized in that: At least one switching position is a blind hole.

12. The waterway switching mechanism according to claim 1, characterized in that: It also includes a driving mechanism, which includes an intermittent motion mechanism, and the intermittent motion mechanism is transmission-connected to the rotating block to drive the rotating block to rotate in the forward direction.

13. The waterway switching mechanism according to claim 12, characterized in that: The intermittent motion mechanism includes a ratchet and pawl mechanism.

14. The waterway switching mechanism according to claim 12, characterized in that: The intermittent motion mechanism includes a rack, a first turntable and a second turntable. The peripheral wall of the first turntable is formed with gear teeth, and the rack is meshed with the first turntable. The end surface of the first turntable is provided with a first ratchet, and the end surface of the second turntable is provided with a second ratchet, and the first ratchet and the second ratchet are meshed.

15. The waterway switching mechanism according to claim 12, characterized in that: The intermittent motion mechanism includes a pull rod, a first turntable and a second turntable. The pull rod cooperates with the first turntable and drives the first turntable to rotate through the movement of the pull rod. The end surface of the first turntable is provided with a first ratchet, and the end surface of the second turntable is provided with a second ratchet. The first ratchet and the second ratchet are meshed.

16. A waterway switching mechanism, comprising a fixed part, the fixed part being provided with a plurality of switching positions, each of the switching positions being provided with a sealing part capable of moving relative to the fixed part in a first direction, and the waterway switching being controlled by the movement of the sealing part; characterized in that: It also includes a rotating block connected to the fixed part, the outer peripheral wall of the rotating block is convexly provided with a pushing part, the pushing part has a positive guide surface, the positive guide surface extends along the positive circumferential direction of the rotating axis of the rotating block, and the height of the positive guide surface is gradually increased along the positive circumferential direction, the multiple sealing parts are arranged at intervals in the circumferential direction and surrounded by the rotating block, each sealing part is provided with a matching part that can match the positive guide surface, when the rotating block rotates, the positive guide surface follows the rotating block to make circumferential movement, and the matching part is driven to move along the first direction through the circumferential movement of the positive guide surface.

17. A shower head comprising the water channel switching mechanism according to any one of claims 1 or 16, characterized in that: It also includes a face cover and a body, the body having a handle part and a back cover, the face cover and the back cover are fixed together and form an installation space, the fixed part is installed in the installation space, and an operating member is also provided, the operating member is movably connected to the fixed part and the rotating block is driven to rotate through the movement of the operating member.

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