CN114160327A - Switching mechanism - Google Patents

Abstract

The invention discloses a switching mechanism, comprising: the water supply device comprises a shell, a plurality of water valves, a sliding piece and an operating piece, wherein the shell comprises a hollow cavity, a water inlet channel and a plurality of water outlet channels, the water inlet channel is communicated with the hollow cavity, and the water inlet channel can be connected with an external water source so as to supply liquid to the hollow cavity; the water valves are movably arranged in the hollow cavity and correspond to the water outlet channels, and each water valve comprises a blocking state and an opening state relative to each water outlet channel; the sliding piece is slidably arranged in the hollow cavity and is linked with the plurality of water through valves so as to selectively drive each water through valve to move; the operating piece is linked with the sliding piece, so that when the operating piece is operated, the sliding piece can be driven to slide, and each water passing valve is driven to move from a blocking state to an opening state.

Description

Switching mechanism

Technical Field

The embodiment of the invention relates to the technical field of water outlet devices, in particular to a switching mechanism for switching a water channel.

Background

In recent years, a water discharge device capable of switching a water discharge mode has been favored by a wide range of users, and for example, shower water, massage water, and the like can be switched according to a use demand. However, in order to ensure smooth use of the switching function, the switching mechanism in the related art has many parts and a complicated structure, which is inconvenient to install and cost-effective.

Disclosure of Invention

The embodiment of the invention provides a switching mechanism, which is used for solving the problems of complex structure and inconvenience in installation in the related art.

The switching mechanism of the embodiment of the invention comprises: the water supply device comprises a shell, a plurality of water valves, a sliding piece and an operating piece, wherein the shell comprises a hollow cavity, and a water inlet channel and a plurality of water outlet channels which are communicated with the hollow cavity, and the water inlet channel can be connected with an external water source so as to supply liquid to the hollow cavity; the water through valves are movably arranged in the hollow cavity and correspond to the water outlet channels, and each water through valve comprises a blocking state and an opening state relative to each water outlet channel; the sliding piece is slidably arranged in the hollow cavity and is linked with the plurality of water-passing valves so as to selectively drive the water-passing valves to move; the operating piece is linked with the sliding piece, so that when the operating piece is operated, the sliding piece can be driven to slide, and the water passing valves are driven to move from the blocking state to the opening state.

According to some embodiments of the present invention, the switching mechanism further includes a plurality of first elastic members, each of the first elastic members being connected to each of the water passage valves, respectively, and providing an elastic force to cause each of the water passage valves to have a tendency to move toward the blocked state.

According to some embodiments of the present invention, each of the water passage valves includes a valve body and an abutting portion provided on the valve body, the abutting portion having a first abutting inclined surface;

the sliding piece is provided with a second abutting inclined surface, and the first abutting inclined surface is matched with the second abutting inclined surface, so that when the sliding piece moves, the second abutting inclined surface is contacted with the first abutting inclined surface to abut against the water passing valve to move along the axis direction of the valve body.

According to some embodiments of the invention, each of the water passage valves further comprises a guide portion provided on the valve body; the inner wall of the shell is also provided with a guide structure, and the guide structure is adjacently arranged on the water outlet channel;

the water valve also has a first abutting side surface; the sliding piece is provided with a second abutting side face, the first abutting side face is matched with the second abutting side face, so that when the sliding piece moves and abuts against the water passing valve to move along the axis direction of the valve body, the first abutting side face is in contact with the second abutting side face to drive the water passing valve to rotate by taking the axis direction as a rotating shaft, and the water passing valve moves along the axis direction through matching of the guide part and the guide structure.

According to some embodiments of the invention, the guide structure further has a stop surface for stopping rotation of the water passage valve, and the first abutment slope is in contact with the second abutment slope when the stop surface is stopped with the water passage valve.

According to some embodiments of the invention, each of the water passage valves includes a first sealing portion, a second sealing portion, and a connecting portion disposed between the first sealing portion and the second sealing portion;

a plurality of grooves are formed in the inner wall surface of the hollow cavity and correspond to the plurality of water through valves;

a first sealing piece and a first friction surface are arranged between the first sealing part and the inner wall surface of the water outlet channel, and the first sealing piece is in sliding sealing fit with the first friction surface;

a second sealing piece and a second friction surface are arranged between the second sealing part and the side wall of the groove, the second sealing piece and the second friction surface are in sliding sealing fit, and the second sealing part and the groove form a liquid storage cavity;

the water passing valve further comprises a through hole, and the through hole penetrates through the first sealing part, the connecting part and the second sealing part so as to enable the liquid storage cavity to be communicated with the water outlet channel through the through hole;

the first friction surface is the outer peripheral surface of the first sealing part or the inner wall surface of the water outlet channel, and the second friction surface is the outer peripheral surface of the second sealing part or the side wall of the groove.

According to some embodiments of the invention, a contact area between the first seal and the first friction face is equal to a contact area between the second seal and the second friction face.

According to some embodiments of the present invention, the housing includes a first through hole and a second through hole, the first through hole and the second through hole are both communicated with the hollow chamber, and the sliding member is slidably disposed through the first through hole and the second through hole;

a third sealing element and a third friction surface are arranged between the sliding element and the hole wall of the first through hole, and the third sealing element and the third friction surface are in sliding sealing fit;

a fourth sealing element and a fourth friction surface are arranged between the sliding piece and the hole wall of the second through hole, and the fourth sealing element and the fourth friction surface are in sliding sealing fit;

a contact area between the third seal and the third friction face is equal to a contact area between the fourth seal and the fourth friction face;

the third friction surface is an outer side wall of the sliding piece or a hole wall of the first through hole, and the fourth friction surface is an outer side wall of the sliding piece or a hole wall of the second through hole.

According to some embodiments of the invention, the outer wall surface of the housing is provided with a plurality of recesses;

the operating piece is provided with an accommodating groove; the switching mechanism further includes a positioning member received in the receiving groove and selectively positioned in the plurality of recessed portions, so that when different ones of the water passage valves are in an open state, the positioning member positions the operation member in the different recessed portions.

According to some embodiments of the present invention, the positioning assembly includes a positioning pin and a second elastic member, and two ends of the second elastic member respectively abut against the positioning pin and the bottom wall of the receiving groove, so that the positioning pin is telescopically received in the receiving groove.

One embodiment of the above invention has at least the following advantages or benefits:

the switching mechanism comprises a shell, a plurality of water passing valves, a sliding piece and an operating piece, wherein the sliding piece is linked with the operating piece and the plurality of water passing valves, so that when the operating piece is operated, the sliding piece can be driven to slide to drive the water passing valves to move from a blocking state to an opening state, and the effect of switching a water channel is achieved. Compared with the technical scheme of the switching mechanism in the related art, the switching mechanism provided by the embodiment of the invention has the advantages of simple structure, light switching force and modularization, is convenient to install and saves cost.

Drawings

Fig. 1 shows a schematic view of a switching mechanism according to a first embodiment of the present invention from one viewing angle.

Fig. 2 shows a schematic view of the switching mechanism of the first embodiment of the present invention from another perspective.

Fig. 3 shows a schematic view of the switching mechanism of the first embodiment of the present invention from yet another perspective.

Fig. 4 is an exploded view showing the switching mechanism according to the first embodiment of the present invention.

Fig. 5 is a schematic view of the switching mechanism according to the first embodiment of the present invention, except that the seat and the operation element are removed.

Fig. 6 shows a schematic view of a slider according to a first embodiment of the present invention.

Fig. 7 is a schematic view showing the water passage valve and the first elastic member according to the first embodiment of the present invention after they are assembled.

Fig. 8 is a schematic view of a water diversion body according to a first embodiment of the present invention.

Fig. 9 shows a cross-sectional view a-a in fig. 3.

Fig. 10 shows a cross-sectional view B-B in fig. 3.

Fig. 11 is a plan view of the switching mechanism according to the first embodiment of the present invention, with the seat and the operation element removed.

Fig. 12 is an exploded view showing a switching mechanism according to a second embodiment of the present invention.

Fig. 13 is a schematic view of the switching mechanism according to the second embodiment of the present invention, except that the seat and the operation element are removed.

Fig. 14 shows a schematic view of a slider according to a second embodiment of the present invention.

Wherein the reference numerals are as follows:

1. switching mechanism

100. Shell body

101. Hollow chamber

110. Base body

111. Concave part

112. Groove

120. Water diversion body

121. First through hole

122. Second through hole

130. Water inlet channel

140. Water outlet channel

160. Guide structure

161. First guide part

162. Second guide part

163. Stop surface

164. The top surface

165. Guiding groove

170. Sliding groove

200. Water valve

210. Valve body

211. A first sealing part

212. Second sealing part

213. Connecting part

214. Through hole

220. Abutting part

221. First abutting inclined plane

222. First abutting side surface

223. Bottom surface

224. End face

230. Guide part

240. Containing groove

300. Sliding member

310. Sliding bar

320. Sliding block

321. Second abutting inclined plane

322. Second abutting side surface

324. First guide surface

325. Second guide surface

400. Operating element

410. Accommodating tank

500. Positioning assembly

510. Locating pin

520. Second elastic member

600. First elastic member

710. First seal member

720. Second seal

730. Third seal

740. Fourth seal

810. First friction surface

820. Second friction surface

830. Third friction surface

840. Fourth friction surface

900. Liquid storage cavity

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

As shown in fig. 1 to 4, fig. 1 is a schematic view of a switching mechanism 1 according to a first embodiment of the present invention from one viewing angle. Fig. 2 shows a schematic view of the switching mechanism 1 of the first embodiment of the present invention from another perspective. Fig. 3 shows a schematic view of the switching mechanism 1 according to the first embodiment of the present invention from a further perspective. Fig. 4 is an exploded view of the switching mechanism 1 according to the first embodiment of the present invention.

The switching mechanism 1 according to the embodiment of the present invention includes a housing 100, a plurality of water passage valves 200, a slider 300, and an operation member 400. It should be noted that the switching mechanism 1 of the embodiment of the present invention can be disposed on a water outlet device for switching the water outlet state of the water outlet device, for example, switching between shower water, massage water, or the mixture of shower water and massage water.

It is understood that the water outlet device of the embodiment of the present invention may be applied to a shower head in a bathroom, a car washing water gun, a kitchen faucet, or other suitable usage scenarios, and the embodiment of the present invention is not limited thereto.

The housing 100 has a hollow chamber 101 (fig. 9), and a water inlet channel 130 and a plurality of water outlet channels 140 communicating with the hollow chamber 101, wherein the water inlet channel 130 can be connected to an external water source to supply liquid to the hollow chamber 101.

The housing 100 may include a base 110 and a water distributor 120, and the base 110 and the water distributor 120 are connected to form the hollow chamber 101, that is, the base 110 and the water distributor 120 are a split structure, and may be connected by bolts, snaps, or the like. Of course, the seat body 110 and the water diversion body 120 may be an integral structure, and the present invention is not limited thereto.

In this embodiment, the housing 100 includes a base 110 and a water distributor 120, and the base 110 and the water distributor 120 are of a split structure. The water inlet channel 130 is disposed on the base 110, the water inlet channel 130 is communicated with the hollow chamber 101, and an external water source supplies liquid into the hollow chamber 101 through the water inlet channel 130. A plurality of water discharge passages 140 are provided on the water distribution body 120 to discharge the liquid in the hollow chamber 101. The plurality of water outlet passages 140 correspond to the plurality of water passing valves 200, so that each water passing valve 200 can block or open each water outlet passage 140, and the effect of switching the water outlet state is achieved.

The plurality of water passage valves 200 are movably disposed in the hollow chamber 101 and are disposed corresponding to the plurality of water outlet passages 140, and each water passage valve 200 includes a closed state and an open state with respect to each water outlet passage 140.

In the present embodiment, the number of the water passage valves 200 is three, and correspondingly, the number of the water outlet passages 140 is also three. Of course, the number of the water passing valves 200 and the water outlet passages 140 may be two, four or other numbers, which is not limited in the present invention.

Each water passage valve 200 is movable relative to its corresponding water outlet channel 140 to switch the water passage valve 200 between a blocked state and an open state relative to the water outlet channel 140. Specifically, when the water passage valve 200 blocks the water outlet passage 140, the liquid in the hollow chamber 101 cannot flow out from the blocked water outlet passage 140, but only flows out from the water outlet passage 140 that is not blocked by the water passage valve 200.

In the present embodiment, the water valve 200 can move linearly relative to the water outlet channel 140 to close or open the water outlet channel 140. Of course, in other embodiments, the water valve 200 may also move along a curve.

The slider 300 is slidably disposed in the hollow chamber 101 and is interlocked with the plurality of water passage valves 200 to selectively drive the movement of each of the water passage valves 200.

In the present embodiment, the water passage valves 200 can be respectively driven to switch between the closed state and the open state by the sliding movement of the slider 300 in the hollow chamber 101. Thus, when one of the water passing valves 200 is in an open state, that is, the water outlet channel 140 corresponding to the water passing valve 200 is not blocked, the liquid in the hollow chamber 101 can flow out from the water outlet channel 140, but cannot flow out from the other water outlet channels 140, thereby achieving the purpose of switching the water paths. Of course, the switching mechanism 1 can be in the water-stopping state or the two or more water outlet channels 140 can be in the open state at the same time by the sliding movement of the sliding member 300, which will be described in detail later with reference to the drawings. In the water stop state, the plurality of water passage valves 200 are all in the blocking state.

It is understood that the movement direction of the slider 300 may be along a straight line or along a curved line. In the present embodiment, the slider 300 moves along a straight line.

The operating member 400 is linked to the slider 300 so that when the operating member 400 is operated, the slider 300 is slid to drive the water passage valves 200 to move from the closed state to the open state. The user can operate the operation member 400 to drive the sliding member 300 to slide, thereby finally realizing the movement of the water valve 200.

Referring to fig. 4, the switching mechanism 1 further includes a plurality of first elastic members 600, each of the first elastic members 600 is connected to each of the water passage valves 200, and provides an elastic force to make each of the water passage valves 200 tend to move toward the closed state.

The first elastic member 600 may be a compression spring. Each water valve 200 is provided with an accommodating groove 240, the first elastic member 600 is disposed in the accommodating groove 240, one end of the first elastic member 600 abuts against the bottom wall of the accommodating groove 240, and the other end of the first elastic member 600 abuts against the inner wall surface of the seat body 110. When the water passage valve 200 is not driven by the slider 300, the first elastic member 600 provides an elastic force so that the water passage valve 200 always has a tendency to move toward the blocked state. When the slider 300 drives the water passage valve 200 to move toward the open state, the urging force between the slider 300 and the water passage valve 200 overcomes the elastic force of the first elastic member 600, so that the water passage valve 200 is finally moved to the open state. When the slider 300 is separated from the water passage valve 200, there is no interaction force between the slider 300 and the water passage valve 200, and the water passage valve 200 is restored to the closed state by the elastic force of the first elastic member 600.

As shown in fig. 5 to 8, fig. 5 is a schematic view of the switching mechanism 1 according to the first embodiment of the present invention, except that the base 110 and the operating element 400 are removed. Fig. 6 shows a schematic view of a slider 320 according to a first embodiment of the invention. Fig. 7 is a schematic view showing the water passage valve 200 and the first elastic member 600 according to the first embodiment of the present invention after they are assembled. Fig. 8 is a schematic view of a water diversion body according to a first embodiment of the present invention.

The slider 300 includes a slide bar 310 and a slider 320. The sliding bar 310 is detachably connected with the sliding block 320, for example, the sliding bar 310 and the sliding block 320 are connected by threads. Of course, the sliding bar 310 and the sliding block 320 may be connected by a snap connection, etc.

In this embodiment, one end of the sliding rod 310 is connected to the sliding block 320 by a screw, and the other end of the sliding rod 310 is exposed out of the outer wall surface of the water separating body 120 to be connected to the operating member 400.

As shown in fig. 7, each of the water delivery valves 200 includes a valve body 210 and an abutting portion 220 provided on the valve body 210, and the abutting portion 220 may be provided so as to protrude from the outer periphery of the valve body 210. The abutment portion 220 has a first abutment slope 221 and a first abutment side face 222. When the slider 300 moves, the first abutment slope 221 can abut against the slider 300, so that the sliding of the slider 300 is converted into the movement of the water passage valve 200 in the axial direction of the valve body 210 thereof. When the slider 300 moves and abuts against the water passage valve 200 before moving in the axial direction thereof, the first abutment side surface 222 can abut against the slider 300, so that the slider 300 pushes the water passage valve 200 to rotate about the axis of the valve body 210.

In the present embodiment, the abutting portion 220 has two first abutting slopes 221 and two first abutting sides 222. The two first abutting inclined surfaces 221 are disposed opposite to each other so that both the first abutting inclined surfaces 221 can abut against the water passage valve 200 to move along the axis of the valve body 210 thereof when the slider 300 reciprocates. The two first contact side surfaces 222 are disposed to face each other so that both the first contact side surfaces 222 can contact each other to push the rotation of the water passage valve 200 when the slider 300 reciprocates.

Each water passage valve 200 further includes a guide portion 230, and the guide portion 230 is provided on the valve body 210. When the water passage valve 200 rotates about the axial direction of the valve body 210, the guide portion 230 can slide along the guide structure 160 of the housing 100 and move in the direction of the open state by the guide structure 160.

In the present embodiment, the guide portion 230 of the water passage valve 200 is cylindrical, but not limited thereto.

One of the first abutting inclined surfaces 221 abuts against one of the first abutting side surfaces 222, the other of the first abutting inclined surfaces 221 abuts against the other of the first abutting side surfaces 222, and an included angle between the adjacent first abutting inclined surface 221 and the first abutting side surface 222 is an obtuse angle, so that when the slider 300 moves, the slider first abuts against the first abutting side surface 222, and the water passage valve 200 rotates about the axis direction of the valve body 210. With the rotational movement, the water passage valve 200 moves in the opening direction until the slider 300 comes into contact with the first contact inclined surface 221, and finally the water passage valve 200 can move in the axial direction of the valve body 210 thereof and in the opening direction by the first contact inclined surface 221.

As shown in fig. 6, the slider 320 has a second abutment slope 321 and a second abutment side surface 322. When the slider 300 moves, the second contact inclined surface 321 of the slider 320 can contact the first contact inclined surface 221 of the water passage valve 200 to abut against the water passage valve 200 to move in the axial direction of the valve body 210. The second contact side surface 322 of the slider 320 can contact the first contact side surface 222 of the water passage valve 200 to drive the water passage valve 200 to rotate about the axial direction.

The second abutting inclined surface 321 is adjacent to the second abutting side surface 322, and an included angle between the second abutting inclined surface 321 and the second abutting side surface 322 is an obtuse angle.

In this embodiment, the slider 320 includes four sets of the second abutting inclined surfaces 321 and the second abutting side surfaces 322, each set including the second abutting inclined surfaces 321 and the second abutting side surfaces 322 which are adjacent to each other. Two sets of the two sets are disposed on a first side of the slider 320 and are disposed opposite to each other. The other two sets are disposed on the second side of the slider 320 and are disposed opposite to each other. Wherein the first and second sides of the slider 320 are oppositely disposed.

A first guide surface 324 is further provided between the two second abutment slopes 321 on the first side of the slider 320, and the first guide surface 324 extends along the sliding direction of the slider 300 and is adapted to contact the bottom surface 223 of one of the water passage valves 200. A second guide surface 325 is further provided between the two second abutment slopes 321 on the second side of the slider 320, and the second guide surface 325 extends in the sliding direction of the slider 300 and is adapted to contact the bottom surfaces 223 of the other two water passage valves 200. The first guide surface 324 and the second guide surface 325 are planar.

As described above, the switching mechanism according to the embodiment of the present invention can realize the water stop state and the open state of two or more water passage valves 200 by the sliding of the slider 300, as well as the open state of one water passage valve 200 and the closed state of the remaining water passage valves 200.

Specifically, when the length of the first guide surface 324 is sufficiently short, the first guide surface 324 does not abut against the water passage valve 200 located below in fig. 5, and the water passage valve 200 is in the closed state. Meanwhile, the second guide surface 325 is located between the two water passage valves 200 located above in fig. 5, so that both the two water passage valves 200 are also in the blocking state, and at this time, all the three water passage valves 200 are in the blocking state, that is, the switching mechanism 1 is in the water stop state.

When the length of the second guide surface 325 is sufficiently long, the second guide surface 325 can simultaneously abut against the two water passage valves 200 positioned above in fig. 5, and both the two water passage valves 200 can be in an open state.

As shown in fig. 5, the water diversion body 120 is provided with a sliding groove 170, and the slider 320 is slidably disposed in the sliding groove 170. One of the water passage valves 200 is located at one side of the sliding groove 170, and the other two water passage valves 200 are located at the other side of the sliding groove 170. The axes of the water valves 200 may form an isosceles triangle or an isosceles triangle, but not limited thereto.

Of course, in other embodiments, the plurality of water passage valves 200 may be located on the same side of the sliding groove 170 and spaced apart from each other along the sliding direction of the slider 300. At this time, the second abutment slope 321 and the second abutment side surface 322 on the slider 300 may be provided in two sets.

In the present embodiment, when one of the water passage valves 200 is in the open state, the first guide surface 324 or the second guide surface 325 of the slider 300 is in contact with the bottom surface 223 of the water passage valve 200 during the movement, so that the position of the water passage valve 200 can be ensured, and the outlet flow rate of the outlet passage 140 corresponding to the water passage valve 200 can be ensured to be stable.

The first guide surface 324 and the second guide surface 325 are not symmetrically disposed about the center line of the slider 320, for example, the length of the first guide surface 324 is smaller than the length of the second guide surface 325. Thus, the stroke of sliding the slider 320 can be shortened, and the volume of the switching mechanism 1 can be reduced.

As shown in fig. 8, the inner wall of the housing 100 is further provided with a guide structure 160, and the guide structure 160 is disposed adjacent to the water outlet passage 140 for guiding the movement of the water passing valve 200. In the present embodiment, the guiding structures 160 are six in number and are disposed on the inner wall of the water diversion body 120 and are all disposed adjacent to the water outlet channel 140. The six guides 160 are divided into three groups, with two guides 160 in each group surrounding the periphery of the opening of the outlet channel 140.

Each guide structure 160 includes a first guide portion 161 and a second guide portion 162, and each of the first and second guide portions 161 and 162 has an arc-shaped structure and surrounds an outer circumference of an opening of the water outlet passage 140. The first guide portion 161 and the second guide portion 162 each have a top surface 164, and the top surface 164 can contact the guide portion 230 of the water passage valve 200. Along the circumferential direction, the distance between each point on the top surface 164 and the inner wall of the water-dividing body 120 becomes gradually larger, i.e., the top surface 164 forms a slope structure. Thus, when the water passage valve 200 rotates, the guide portion 230 of the water passage valve 200 contacts the top surface 164, and the water passage valve 200 moves in the direction of the open state while rotating by the urging force of the top surface 164.

The two top surfaces 164 of each guide structure 160 extend in opposite directions in the circumferential direction, so that the guide portion 230 of the water passage valve 200 is pressed against the top surface 164 of the first guide portion 161 or the top surface 164 of the second guide portion 162 when the slider 300 reciprocates.

The guide structure 160 further has a stop surface 163 for stopping the rotation of the water passage valve 200, and when the stop surface 163 is stopped by the water passage valve 200, the first abutment slope 221 is in contact with the second abutment slope 321.

In the present embodiment, the stop surface 163 is provided at a position where the first guide portion 161 is close to the slide groove 170.

The waterway switching process of the switching mechanism 1 according to the embodiment of the present invention will be described in detail with reference to fig. 5 to 8.

As shown in fig. 5, the water passage valve 200 below the slide groove 170 is opened by sliding the slider 300 from right to left. The opening process of the water valve 200 may be divided into two stages, i.e., a first stage and a second stage. The first stage is as follows: the second contact side surface 322 of the slider 320 contacts the first contact side surface 222 of the water passage valve 200, and the water passage valve 200 can rotate counterclockwise about the axis thereof with the movement of the slider 320. As the water passage valve 200 rotates, the water passage valve 200 moves to the open state until the abutting portion 220 of the water passage valve 200 is stopped by the stop surface 163 while the water passage valve 200 is rotating due to the contact engagement between the top surface 164 of the guide structure 160 and the guide portion 230 of the water passage valve 200. At this time, the first contact inclined surface 221 of the water passage valve 200 just contacts the second contact inclined surface 321 of the slider 320. That is, the length of the top surface 164 having the slope structure needs to be sufficient to move the water passage valve 200 to a predetermined height during the rotation, and the predetermined height needs to ensure that the first abutment slope 221 of the water passage valve 200 is just in contact with the second abutment slope 321 of the slider 320.

And a second stage: the slider 320 continues to move leftward, and the water passage valve 200 does not rotate any more due to the stopping action of the stop surface 163, but only moves by the contact engagement of the first abutment slope 221 and the second abutment slope 321, that is, the water passage valve 200 moves to the open state. When the first abutting inclined surface 221 is disengaged from the second abutting inclined surface 321, the water passage valve 200 is switched to the open state, and the water passage valve 200 is always maintained in the open state by the contact action of the first guide surface 324 and the bottom surface 223 of the water passage valve 200, thereby ensuring the flow rate of the water outlet passage 140 to be stable.

It should be noted that, in the description of the embodiments of the present invention, the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or units must have specific directions, be configured and operated in specific orientations, and thus, should not be construed as limiting the embodiments of the present invention.

As shown in fig. 9, fig. 9 shows a cross-sectional view a-a in fig. 3. The housing 100 includes a first through hole 121 and a second through hole 122, the first through hole 121 and the second through hole 122 are both communicated with the hollow chamber 101, and the sliding member 300 is slidably disposed through the first through hole 121 and the second through hole 122.

In this embodiment, the first through hole 121 and the second through hole 122 are disposed on the water diversion body 120, the sliding rod 310 is slidably disposed through the first through hole 121, and the sliding block 320 is slidably disposed through the second through hole 122.

A third sealing member 730 and a third friction surface 830 are arranged between the sliding member 300 and the hole wall of the first through hole 121, and the third sealing member 730 and the third friction surface 830 are in sliding sealing fit; a fourth sealing member 740 and a fourth friction surface 840 are arranged between the sliding piece 300 and the hole wall of the second through hole 122, and the fourth sealing member 740 and the fourth friction surface 840 are in sliding sealing fit; the contact area between the third seal 730 and the third friction face 830 is equal to the contact area between the fourth seal 740 and the fourth friction face 840; the third friction surface 830 is an outer sidewall of the sliding member 300 or a hole wall of the first through hole 121, and the fourth friction surface 840 is an outer sidewall of the sliding member 300 or a hole wall of the second through hole 122.

In this embodiment, the third friction surface 830 is an outer sidewall of the sliding bar 310. The outer sleeve of the slide bar 310 is provided with a third sealing member 730, and the third sealing member 730 is slidably and sealingly engaged with the outer side wall of the slide bar 310. The third seal 730 is disposed in a groove in the wall of the first bore 121. The third seal 730 does not move with the slide bar 310 as the slide bar 310 moves.

The fourth friction surface 840 is an outer sidewall of the slider 320. The slider 320 is externally sleeved with a fourth sealing member 740, and the fourth sealing member 740 is slidably and hermetically engaged with the outer side wall of the slider 320. A fourth seal 740 is disposed in a groove in the bore wall of the second bore 122. The fourth seal 740 does not move with the slider 320 as the slider 320 moves.

Of course, in other embodiments, the third friction surface 830 may be an aperture wall of the first through hole 121, and the fourth friction surface 840 may be an aperture wall of the second through hole 122. Correspondingly, the sliding rod 310 and the sliding block 320 are respectively provided with a groove for accommodating the third sealing member 730 and the fourth sealing member 740. When the sliding rod 310 and the sliding block 320 move, the third sealing member 730 and the fourth sealing member 740 can be driven to move together and are slidably and sealingly engaged with the hole wall of the first through hole 121 and the hole wall of the second through hole 122, respectively.

The contact area between the third seal 730 and the third friction face 830 is equal to the contact area between the fourth seal 740 and the fourth friction face 840. Thus, the sliding bar 310 and the sliding block 320 are in a state of being hydraulically balanced, i.e., regardless of the positions of the sliding bar 310 and the sliding block 320, they can be maintained at the positions without play.

Referring to fig. 9, the outer wall of the housing 100 is provided with a plurality of recesses 111. In the present embodiment, the plurality of concave portions 111 are disposed on the outer wall surface of the seat body 110, and the plurality of concave portions 111 are disposed at intervals along the moving direction of the slider 300. The number of the recesses 111 may correspond to the number of the water passage valves 200.

The operating member 400 is provided with a receiving groove 410. The switching mechanism 1 further includes a positioning member 500, and the positioning member 500 is received in the receiving groove 410 and selectively positioned in the plurality of recesses 111, so that when different water passage valves 200 are in the open state, the positioning member 500 positions the operating member 400 in different recesses 111. The positioning of the operating member 400 in the set position is ensured by the design of the positioning assembly 500.

The positioning assembly 500 includes a positioning pin 510 and a second elastic member 520, and two ends of the second elastic member 520 respectively abut against the positioning pin 510 and the bottom wall of the receiving groove 410, so that the positioning pin 510 is telescopically received in the receiving groove 410. The second elastic member 520 may be a compression spring. One end of the positioning pin 510 abuts against the second elastic member 520, and the other end can be clamped into the recess 111, so that positioning is realized.

As shown in fig. 10, fig. 10 shows a cross-sectional view B-B of fig. 3. Each of the water passage valves 200 includes a first sealing portion 211, a second sealing portion 212, and a connecting portion 213 provided between the first sealing portion 211 and the second sealing portion 212.

The inner wall surface of the hollow chamber 101 is provided with a plurality of grooves 112, and the plurality of grooves 112 are provided corresponding to the plurality of water valves 200. The first sealing portion 211 can be in sealing engagement with the inner wall surface of the outlet passage 140, and the second sealing portion 212 can be in sealing engagement with the side wall of the recess 112.

A first sealing member 710 and a first friction surface 810 are arranged between the first sealing part 211 and the inner wall surface of the water outlet channel 140, and the first sealing member 710 and the first friction surface 810 are in sliding sealing fit; a second sealing member 720 and a second friction surface 820 are arranged between the second sealing part 212 and the side wall of the groove 112, the second sealing member 720 and the second friction surface 820 are in sliding sealing fit, and the second sealing part 212 and the groove 112 form a liquid storage cavity 900; the water valve 200 further includes a through hole 214, and the through hole 214 penetrates through the first sealing portion 211, the connecting portion 213 and the second sealing portion 212, so that the reservoir chamber 900 is communicated with the water outlet channel 140 through the through hole 214; the first friction surface 810 is an outer circumferential surface of the first sealing portion 211 or an inner wall surface of the water outlet channel 140, and the second friction surface 820 is an outer circumferential surface of the second sealing portion 212 or a sidewall of the groove 112.

In this embodiment, the first sealing part 211 is sleeved with a first sealing member 710, and the first sealing part 211 is in sealing fit with the inner wall surface of the water outlet channel 140 through the first sealing member 710. The outer circumference of the second sealing portion 212 is sleeved with a second sealing member 720, and the second sealing portion 212 is in sealing fit with the side wall of the groove 112 through the second sealing member 720.

In the present embodiment, the first friction surface 810 is an inner wall surface of the water outlet channel 140, and the first sealing member 710 and the first friction surface 810 are slidably and hermetically engaged, that is, when the water passing valve 200 moves, the first sealing member 710 moves along with the first sealing portion 211 and further is hermetically engaged with the inner wall surface of the water outlet channel 140.

Similarly, the second friction surface 820 is a sidewall of the groove 112, and the second sealing member 720 and the second friction surface 820 are slidably and sealingly engaged, that is, when the water valve 200 moves, the second sealing member 720 moves along with the second sealing portion 212 and is further sealingly engaged with the sidewall of the groove 112.

Of course, in another embodiment, the first friction surface 810 may be an outer peripheral surface of the first sealing portion 211, and the first seal 710 may be fixed in the groove of the outlet passage 140. When the water valve 200 moves, the first sealing portion 211 moves, and the first sealing member 710 is fixed, so that the outer circumferential surface of the first sealing portion 211 is slidably and sealingly engaged with the first sealing member 710.

The second friction surface 820 may be an outer circumferential surface of the second seal portion 212, and the second seal 720 may be fixed in a groove of a sidewall of the groove 112. When the water valve 200 moves, the second sealing part 212 moves up and down, and the second sealing member 720 is fixed, so that the outer circumferential surface of the second sealing part 212 is slidably and hermetically engaged with the second sealing member 720.

With continued reference to fig. 10, the contact area between the first seal 710 and the first friction face 810 is equal to the contact area between the second seal 720 and the second friction face 820.

When the water valve 200 is in the open state, the liquid in the hollow chamber 101 can flow to the liquid storage chamber 900 through the through hole 214. In this way, both the side of the first sealing portion 211 facing away from the second sealing portion 212 and the side of the second sealing portion 212 facing away from the first sealing portion 211 can be filled with liquid. Since the contact area between the first sealing member 710 and the first friction surface 810 is equal to the contact area between the second sealing member 720 and the second friction surface 820, the water passing valve 200 is in a water pressure balanced state when in an open state.

Similarly, the water valve 200 is in a closed state and is in a state of water pressure balance.

Thus, the water passage valve 200 is in a water pressure equilibrium state in both the closed state and the open state. When the water valve 200 is switched between the blocking state and the opening state, since both states are in the water pressure balance state, the water valve 200 is smoother during the movement process and does not receive the reaction force of the water pressure, so that the switching force of the user for operating the operation member 400 is smaller, and the effect of saving labor is achieved.

As shown in fig. 11, fig. 11 is a plan view of the switching mechanism 1 according to the first embodiment of the present invention, with the base 110 and the operation element 400 removed. The axes of the two water valves 200 on one side of the slider 300 are O1 and O2, respectively, and a plane S1 is formed by the axis O1 and the axis O2. The center line of the sliding bar 310 forms a plane S2, and the plane S2 is parallel to the plane S1. The distance D1 between the flat surface S1 and one end surface 224 of the abutment portion 220 of the water passage valve 200 facing away from the axis O1 is D2, and the distance D2 is between the end surface 224 and the flat surface S2. Thus, by adjusting the ratio of D1/D2, the switching force and travel of the slider 300 can be adjusted. Specifically, the larger the ratio D1/D2, the smaller the switching force and the longer the travel of the slider 300.

As shown in fig. 12 to 14, fig. 12 is an exploded schematic view of a switching mechanism 1 according to a second embodiment of the present invention. Fig. 13 is a schematic view of the switching mechanism 1 according to the second embodiment of the present invention, except that the base 110 and the operating element 400 are removed. Fig. 14 shows a schematic view of a slider 320 according to a second embodiment of the invention.

The switching mechanism 1 of the second embodiment of the present invention is the same as the first embodiment, and is not repeated herein, except that: when the slider 300 moves, the water passage valve 200 moves only without rotating.

Specifically, the guide structure 160 according to the second embodiment of the present invention includes the guide groove 165, and the guide portion 230 of the water passage valve 200 is provided in the guide groove 165. The water passage valve 200 is not rotatable about its axis but movable only in the direction of the open state by the restriction of the guide groove 165. When the slider 300 abuts against the abutting portion 220 of the water passage valve 200, the water passage valve 200 is moved only by the engagement of the guide portion 230 and the guide groove 165, and is not rotated.

In summary, the advantages and beneficial effects of the switching mechanism 1 according to the embodiment of the present invention at least include:

the switching mechanism 1 of the embodiment of the invention comprises a shell 100, a plurality of water through valves 200, a sliding piece 300 and an operating piece 400, wherein the sliding piece 300 is linked with the operating piece 400 and the plurality of water through valves 200, so that when the operating piece 400 is operated, the sliding piece 300 can be driven to slide to drive each water through valve 200 to move from a blocking state to an opening state, and the effect of switching a water channel is realized. Compared with the technical scheme of the switching mechanism 1 in the related art, the switching mechanism 1 has the advantages of simple structure, convenience in installation and cost saving.

Meanwhile, the sliding of the sliding member 300, the plurality of water passage valves 200 linked therewith, and the design of the same contact area between the sealing member and the friction surface of the water passage valve 200, make the switching force of the switching mechanism 1 of the embodiment of the present invention not affected by the water pressure, and the switching is more labor-saving.

In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments of the invention may be understood by those of ordinary skill in the art according to specific situations.

In the description herein, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the invention should be included in the protection scope of the embodiments of the invention.

Claims (10)

1. A switching mechanism, comprising:

the shell comprises a hollow cavity, and a water inlet channel and a plurality of water outlet channels which are communicated with the hollow cavity, wherein the water inlet channel can be connected with an external water source so as to supply liquid to the hollow cavity;

the water through valves are movably arranged in the hollow cavity and correspond to the water outlet channels, and each water through valve comprises a blocking state and an opening state relative to each water outlet channel;

the sliding piece is slidably arranged in the hollow cavity and is linked with the plurality of water-passing valves so as to selectively drive the water-passing valves to move; and

and the operating piece is linked with the sliding piece, so that when the operating piece is operated, the sliding piece can be driven to slide, and the water passing valves are driven to move from the blocking state to the opening state.

2. The switching mechanism of claim 1, further comprising a plurality of first elastic members, each of the first elastic members being connected to each of the water passage valves and providing an elastic force to cause each of the water passage valves to have a tendency to move toward the blocked state.

3. The switching mechanism of claim 1, wherein each of the water passage valves comprises a valve body and an abutment portion provided on the valve body, the abutment portion having a first abutment slope;

the sliding piece is provided with a second abutting inclined surface, and the first abutting inclined surface is matched with the second abutting inclined surface, so that when the sliding piece moves, the second abutting inclined surface is contacted with the first abutting inclined surface to abut against the water passing valve to move along the axis direction of the valve body.

4. The switching mechanism of claim 3, wherein each of the water passing valves further comprises a guide portion disposed on the valve body; the inner wall of the shell is also provided with a guide structure, and the guide structure is adjacently arranged on the water outlet channel;

the water valve also has a first abutting side surface; the sliding piece is provided with a second abutting side face, the first abutting side face is matched with the second abutting side face, so that when the sliding piece moves and abuts against the water passing valve to move along the axis direction of the valve body, the first abutting side face is in contact with the second abutting side face to drive the water passing valve to rotate by taking the axis direction as a rotating shaft, and the water passing valve moves along the axis direction through matching of the guide part and the guide structure.

5. The switching mechanism of claim 4, wherein the guide structure further comprises a stop surface for stopping rotation of the water valve, and wherein the first abutment ramp contacts the second abutment ramp when the stop surface is stopped by the water valve.

6. The switching mechanism of claim 1, wherein each of the water passing valves comprises a first sealing portion, a second sealing portion, and a connecting portion disposed between the first sealing portion and the second sealing portion;

a plurality of grooves are formed in the inner wall surface of the hollow cavity and correspond to the plurality of water through valves;

a first sealing piece and a first friction surface are arranged between the first sealing part and the inner wall surface of the water outlet channel, and the first sealing piece is in sliding sealing fit with the first friction surface;

a second sealing piece and a second friction surface are arranged between the second sealing part and the side wall of the groove, the second sealing piece and the second friction surface are in sliding sealing fit, and the second sealing part and the groove form a liquid storage cavity;

the water passing valve further comprises a through hole, and the through hole penetrates through the first sealing part, the connecting part and the second sealing part so as to enable the liquid storage cavity to be communicated with the water outlet channel through the through hole;

the first friction surface is the outer peripheral surface of the first sealing part or the inner wall surface of the water outlet channel, and the second friction surface is the outer peripheral surface of the second sealing part or the side wall of the groove.

7. The switching mechanism of claim 6, wherein a contact area between the first seal and the first friction surface is equal to a contact area between the second seal and the second friction surface.

8. The switching mechanism of claim 1, wherein the housing comprises a first aperture and a second aperture, the first aperture and the second aperture both communicating with the hollow chamber, the slider slidably disposed through the first aperture and the second aperture;

a third sealing element and a third friction surface are arranged between the sliding element and the hole wall of the first through hole, and the third sealing element and the third friction surface are in sliding sealing fit;

a fourth sealing element and a fourth friction surface are arranged between the sliding piece and the hole wall of the second through hole, and the fourth sealing element and the fourth friction surface are in sliding sealing fit;

a contact area between the third seal and the third friction face is equal to a contact area between the fourth seal and the fourth friction face;

the third friction surface is an outer side wall of the sliding piece or a hole wall of the first through hole, and the fourth friction surface is an outer side wall of the sliding piece or a hole wall of the second through hole.

9. The switching mechanism of claim 1, wherein the outer wall surface of the housing is provided with a plurality of depressions;

the operating piece is provided with an accommodating groove; the switching mechanism further includes a positioning member received in the receiving groove and selectively positioned in the plurality of recessed portions, so that when different ones of the water passage valves are in an open state, the positioning member positions the operation member in the different recessed portions.

10. The switching mechanism of claim 9, wherein the positioning assembly comprises a positioning pin and a second elastic member, and two ends of the second elastic member respectively abut against the positioning pin and a bottom wall of the receiving groove, so that the positioning pin is telescopically received in the receiving groove.

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