JP7486640B1 - Waterway switching mechanism and water sprinkler - Google Patents

Abstract

[Problem] To provide a waterway switching mechanism with a small switching force. [Solution] The waterway switching mechanism includes a water diversion body 2, a transmission member 3, and a seal member 4. The water diversion body 2 is provided with at least two water discharge passages 21, and a seal member 4 is provided in each water discharge passage 21 so as to be movable along a first direction relative to the water diversion body 2, whereby the seal member 4 opens the water discharge passage 21, and the transmission member 3 is sequentially rotated in an interlocking rotation state and a relative rotation state with the seal member 4 during the rotation process, and when the transmission member 3 and the seal member 4 are in a state of interlocking rotation, the water diversion body 2 and the seal member 4 move the seal member 4 along the first direction by inverted engagement, and when the transmission member 3 and the seal member 4 are in a state of relative rotation, the transmission member 3 and the seal member 4 further move the seal member 4 in the first direction by inverted engagement. [Selected Figure] Figure 3

Description

The present invention relates to a sprinkler system, and in particular to a water channel switching mechanism in a sprinkler system.

According to the specific structure disclosed in CN204083300U, the conventional waterway switching mechanism includes a fixed part and a rotating shaft rotatably connected to the fixed part, and the fixed part is provided with a plurality of water distribution holes, and a seal member that is axially movable relative to the fixed part is disposed in each of the water distribution holes, and the seal part moves to control waterway switching. A plurality of seal members are arranged in the circumferential direction 10 of the axis of the rotating shaft, and the circumferentially arranged seal members and the rotating shaft are arranged along the axis, and a groove is formed on the end surface of the rotating shaft, and the rotating shaft rotates to align the groove with one of the seal members, and the seal part is loosely fitted into the groove to open the water distribution hole, thereby switching is performed. The waterway switching mechanism has the disadvantages of being long in the axial direction, occupying a large space, being limited in the places where it can be used, and being subject to large wear and friction during rotation due to the surface contact between the end surface of the rotating shaft and the fixed part.

Unlike the waterway switching mechanism described above, another conventional waterway switching mechanism disclosed in CN205013826U has multiple seal members surrounding a rotating shaft, the seal members moving in a radial direction, and a cam mechanism provided on the rotating shaft, with the outer circumferential surface of the cam mechanism abutting against the seal members to move them and perform switching. This waterway switching mechanism also has the disadvantage that the seal members move in the radial direction, so the radial distance is long, occupying a large space, and limiting the places where it can be used.

The main technical problem that this invention aims to solve is to provide a waterway switching mechanism in which the force transmission loss between the transmission member and the seal member is relatively small during the process of opening the seal member, and the required switching force is relatively small.

In order to solve the above technical problems, the present invention provides a waterway switching mechanism, which includes a water diversion body, a transmission member, and a seal member. The water diversion body is provided with at least two water outlet channels, and the seal member is provided in each water outlet channel so as to be movable along a first direction relative to the water diversion body, thereby causing the seal member to open the water outlet channel, and the transmission member is sequentially rotated in an interlocking rotation state and a relative rotation state with the seal member during the rotation process, and when the transmission member and the seal member are in a state of interlocking rotation, the water diversion body and the seal member move the seal member along the first direction by inverted engagement, and when the transmission member and the seal member are in a state of relative rotation, the transmission member and the seal member further move the seal portion in the first direction by inverted engagement.

The present invention further provides a waterway switching mechanism, comprising a water diversion body, a transmission member, and a seal member, the water diversion body being provided with at least two discharge channels, the seal member being provided in each discharge channel so as to be movable along a first direction relative to the water diversion body, whereby the seal member opens the discharge channel, the transmission member engages with the seal member in conjunction with the seal member, and rotates the seal member about its own axis, thereby rotating it relative to the water diversion body, and the water diversion body and the seal member are arranged to rotate the rotation of the seal relative to the water diversion body, and the transmission member is arranged to rotate the seal relative to the water diversion body, The water divider has a first reversible member and a first reversible fitting member that are reversed to convert the movement of the seal along a first direction, and the water divider is further provided with a stopper for releasing the interlocking engagement between the transmission member and the seal member, and the seal member is rotated relative to the transmission member after rotating until it is engaged with the stopper to limit its position, and the transmission member and the seal member have a second reversible member and a second reversible fitting member that are reversed to convert the rotation of the transmission member relative to the seal member into the movement of the seal member along the first direction relative to the water divider.

In a preferred embodiment, a first boss and a second boss are provided on the side of the transmission member and the seal member, respectively, protruding outward along the radial direction, and when the seal member is in a position to close the discharge passage, the first boss and the second boss are on the same horizontal plane.

In a preferred embodiment, the first inverted member is a first guide slope, and the first inverted engagement member is a guide block that protrudes outward along the radial direction of the seal member.

In a preferred embodiment, the position restriction member is a surface provided at the end of the guide slope for positionally engaging with the second boss.

In a preferred embodiment, the second inverted member is a second guide slope provided on the upper surface of the first boss, the second inverted engagement member is the bottom surface of the second boss, and when the seal member releases the interlocking engagement with the transmission member, the bottom surface of the second boss and the bottom of the second guide slope are on the same horizontal plane.

In a preferred embodiment, the upper surface of the first boss is provided with a third guide slope on the side remote from the second guide slope, and the third guide slope engages with a second conversion engagement member so as to convert rotation of the seal member relative to the transmission member into movement of the seal member along a second direction relative to the water divider, the second direction being the opposite direction to the first direction.

In a preferred embodiment, the third guide slope and the second guide slope are provided relative to the central axis of the first boss.

In a preferred embodiment, the seal members are distributed rotationally symmetrically around the transmission member.

In a preferred embodiment, the seal member is a water passage valve having a valve body, a seal ring provided on the outside of the valve body, and a return spring connected inside the valve body, and when the seal member moves in the first direction, an elastic return force is accumulated in the return spring.

In a preferred embodiment, the valve further includes a fixed seat fixedly connected to the water divider to form a chamber for accommodating the seal member, and one end of the return spring is connected to the upper end of the chamber to form a fixed end, and the other end extends into the valve body and is fixedly connected to the valve body.

In a preferred embodiment, the inner diameter of the chamber is the same as the inner diameter of the water inlet of the discharge passage, and the valve body further has an opening that connects the water inlet to the chamber.

In a preferred embodiment, the device further includes an operating member for rotating the transmission member.

In a preferred embodiment, the operating member is a knob, and the knob is rotationally connected to the upper surface of the fixed seat by a snap and a locking groove in the rotation direction of the transmission member, and is fitted in a position regulated along the axial direction of the transmission member.

In a preferred embodiment, an elastic positioning pin is provided on the side of the knob facing the upper surface of the fixed seat, and a positioning groove is provided on the upper surface of the fixed seat along the rotation direction of the knob.

The present invention further provides a sprinkler device, which includes the above-mentioned water channel switching mechanism.

The technical solution of the present invention has the following beneficial effects compared to the prior art:

The present invention provides a waterway switching mechanism, in which the transmission member first rotates the sealing member together, and during rotation, the sealing member moves a certain distance along the first direction due to the reverse engagement of the sealing member and the water divider. After that, the release of the interlock between the sealing member and the transmission member changes to relative motion, and during the relative motion, the sealing member continues to move a certain distance along the first direction due to the reverse engagement of the sealing member and the transmission member, thereby realizing that the sealing member completely opens the opening of the discharge channel. At this time, the movement of the sealing member in the first direction is divided into two stages, and in the first stage, the transmission member rotates the sealing member together, the torque is relatively large, the operating force is relatively small, and the operating feel is good. Furthermore, the transmission member rotates the sealing member together, which can also reduce the force transmission loss during the transmission process, and the amount of force required for operation can be further reduced.

FIG. 2 is a perspective view of a waterway switching mechanism according to the first preferred embodiment of the present invention. FIG. 2 is a plan view of the waterway switching mechanism according to the first preferred embodiment of the present invention. 3 is a cross-sectional view taken along the line AA in FIG. 2. 3 is a cross-sectional view taken along the line BB in FIG. 2. FIG. 2 is an exploded view of the waterway switching mechanism according to the first preferred embodiment of the present invention. FIG. 4 is a perspective view of a transmission member and a seal member fitted together in a preferred embodiment of the present invention. FIG. 2 is a perspective view of a transmission member according to the first preferred embodiment of the present invention. FIG. 2 is a perspective view of a seal member according to the first preferred embodiment of the present invention. FIG. 2 is a schematic diagram of a knob according to the first preferred embodiment of the present invention. 1 is a plan view showing a seal member 2 in an open state according to a first preferred embodiment of the present invention; FIG. 2 is a waterway diagram showing the seal 2 in an open state in the first preferred embodiment of the present invention. 1 is a plan view of a seal member 1 in an open state according to a preferred embodiment 1 of the present invention; 13 is a cross-sectional view showing the state in which the seal member 2 shown in FIG. 12 is in a closed state. 13 is a cross-sectional view of the seal member 1 in the state shown in FIG. 12 in an open state. FIG. 2 is a plan view showing a seal member 3 in an open state according to the first preferred embodiment of the present invention. ~ 16 is a cross-sectional view showing the state shown in FIG. 15 in which sealing member 2 is in a closed state and sealing member 3 is in an open state. FIG. 11 is an exploded view of a showerhead according to a second preferred embodiment of the present invention. FIG. 11 is a water channel diagram inside the showerhead when the seal member 2 is opened in the preferred embodiment 2 of the present invention.

The technical solutions in the embodiments of the present invention will be described below clearly and completely with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making creative work also fall within the scope of protection of the present invention.

In the description of the present invention, the positions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", "top/bottom" are based on the positions or positional relationships shown in the accompanying drawings, and are merely for the purpose of facilitating the description of the present invention, and do not expressly or imply that the devices or elements shown must have a specific position and a configuration or operation at a specific position, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are merely for explanatory purposes and should not be understood as expressing or implying relative importance. In the description of the present invention, unless otherwise specified and limited, the terms "mounted", "installed", "set/connected", "connected", etc. should be understood in a broad sense, for example, "connected" may be a wall-mounted connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediary, or an internal communication between two elements, and a person skilled in the art can specifically understand the specific meaning of the above terms in the present invention.

Example 1
1 to 9, the waterway switching mechanism 1 provided by the present invention includes a water diversion body 2, a transmission member 3, and a seal member 4. The water diversion body 2 is provided with three water outlet passages 21, and each of the water outlet passages 21 is provided with a seal member 4 that is movable along a first direction relative to the water diversion body 2, thereby causing the seal member 4 to open the water outlet passage 21. In this embodiment, the seal members 4 are distributed rotationally symmetrically around the transmission member 3. In this way, when the transmission member 3 rotates, one of the three seal members 4 and the transmission member 3 are in a sequential interlocking rotation state and a relative rotation state with the seal member 4 during the rotation process, and when the transmission member 3 and the seal member 4 are in an interlocking rotation state, the water diversion body 2 and the seal member 4 move the seal member 4 along the first direction by reverse fitting. When the transmission member 3 and the seal member 4 are rotating relative to each other, the transmission member 3 and the seal member 4 are inverted and fitted together to move the seal member 4 further in the first direction. This opens one of the three water outlet passages 21 and closes the remaining two. When the transmission member 3 rotates further, the opened seal member 4 returns to its original position, and the other seal member 4 cooperates with the transmission member 3 to open the other water outlet passage 21, repeating the switching of the water passages.

In this embodiment, the first direction is a direction of movement along the axial direction of the sealing member 4 away from the water diversion body 2. As a simple alternative to this embodiment, the first direction may be angled with the axial direction of the sealing member 4, as long as the sealing member 4 can be moved away from the water diversion body 2 to open the water outlet channel 21. The number of water outlet channels 21 may also be increased or decreased according to actual demand, and both are simply alternative examples of this embodiment.

Specifically, taking the seal member 4 in the initial state as an example, the discharge passage 21 corresponding to this seal member 4 is in a closed state. When the transmission member 3 starts to rotate, the seal member 4 rotates relative to the water diversion body 2 by engaging with the transmission member 3 and rotating around its own axis. The water diversion body 2 and the seal member 4 have a first reversing member 22 and a first reversing fitting member 41 that are reversed to reverse the rotation of the seal member 4 relative to the water diversion body 2 to the movement of the seal member 4 along the first direction relative to the water diversion body 2. At this time, the discharge passage 21 is already opened, but the flow rate of this discharge passage 21 is still small because the movement distance of the seal member 4 in the first direction relative to the water diversion body 2 is limited. The water diversion body 2 is further provided with a stopper 23 for releasing the interlocking engagement between the transmission member 3 and the seal member 4, and after the seal member 4 rotates until it engages with the stopper 23, the transmission member 3 and the seal member 4 rotate relatively. The transmission member 3 and the seal member 4 have a second inverted member 31 and a second inverted fitting member 42 that invert and fit together to convert the rotation of the seal member 4 relative to the transmission member 3 into the movement of the seal member 4 along the first direction relative to the water divider 2. This causes the corresponding water outlet passage 21 of the seal member 4 to be completely opened, maximizing the flow rate of the water outlet passage 21.

In the waterway switching device 1, first, the transmission member 3 rotates the seal member 4 together, and during rotation, the seal member 4 and the water divider 2 are inverted and engaged to move the seal member 4 a predetermined distance along the first direction. After that, the interlocking engagement between the seal member 4 and the transmission member 3 is released and converted into relative motion, and during the relative motion, the seal member 4 moves a further predetermined distance along the first direction due to the inverted engagement between the seal member 4 and the transmission member 3, thereby realizing that the seal member 4 completely opens the opening of the discharge channel 21. At this time, the movement of the seal member 4 in the first direction is divided into two stages, and in the first stage, the transmission member 3 rotates the seal member 4, requiring a large torque, small operating force, and a good operating feel. Furthermore, the transmission member 3 rotates the seal member 4 together, which can also reduce the force transmission loss and further reduce the amount of force required for operation.

In order to rotate the transmission member 3 and the seal member 4 together, a first boss 32 and a second boss 43 that protrude radially outward are provided on the side of the transmission member 3 and the seal member 4, respectively. When the seal member 4 is in the initial position, the first boss 32 and the second boss 43 are on the same horizontal plane. As a result, when the transmission member 3 rotates, the first boss 32 and the second boss 43 come into contact with each other, generating a force in the rotational direction and rotating the seal member 4 together. Note that the distance from the axis of the transmission member to the outside of the second boss 43 is L1, and the distance from the outside of the second boss 43 to the axis of the seal member is L2. By adjusting L1 and L2, the value of the switching force and the stroke of the movement can be adjusted. The smaller the value of L1/L2, the lighter the switching force, but the longer the stroke of the rotor rotation angle.

To achieve the reversing action, the first reversing member 22 is a first guide slope, and the first reversing fitting member 41 is a guide block that protrudes radially outward from the seal member 4. As a result, while the seal member 4 is rotating, the guide block moves from the base end side to the tip end side along the first guide slope, achieving the purpose of lifting the entire seal member 4 by a predetermined height. In addition, the tip, i.e., the end of the guide slope, forms a flat surface, i.e., the right side of a right-angled triangle, and with this right side as the stopper 23, the second boss 43 moves to a position where it abuts on the flat surface during the process of the guide block rising from the lower end along the first guide slope, and the seal member 4 can be released from the interlocking engagement with the transmission member 3 in the current rotation direction.

After the interlocking engagement between the seal member 4 and the transmission member 3 is released, the seal member 4 is further lifted by the second reversing member 31 and the second reversing fitting member 42. Therefore, in this embodiment, the height of the first boss 32 is designed so that when the interlocking engagement between the seal member 4 and the transmission member 3 is released, the bottom surface of the second boss 43 and the bottom of the second guide slope are located on the same horizontal plane. As a result, the second reversing member 31 becomes the second guide slope provided on the upper surface of the first boss 32, and the second reversing fitting member 42 becomes the bottom surface of the second boss 43. When the transmission member 3 and the seal member 4 rotate relative to each other, the bottom surface of the second boss 43 moves from bottom to top along the second guide slope, causing the seal member 4 to move further in the first direction.

The above configuration completely achieves the purpose of moving the seal member 4 in the first direction to open the discharge channel 21. However, the switching of the channels is performed by opening one channel and closing another. Therefore, a configuration is required to move the seal member 4 in the first direction and then return it to the opposite direction.

For this purpose, the side of the upper surface of the first boss 32 away from the second guide slope is provided with a third guide slope 33 arranged symmetrically with the second guide slope 34 with respect to the central axis of the first boss 32. Therefore, when the transmission member 3 further rotates relative to the seal member 4, the third guide slope 33 cooperates with the second inverted fitting member 42 to convert the rotation of the seal member 4 relative to the transmission member 3 into the movement of the seal member 4 along the second direction relative to the water divider 2. The second direction is the opposite direction to the first direction. At this time, the first stage of the fall of the seal member 4 is completed. Thereafter, in order to complete the second stage of the fall, the seal member 4 must be rotated along the first guide slope and dropped by applying an external force until it returns to its original position.

In order to provide this external force, the seal member 4 is a water passage valve having a valve body 44, a seal ring 45 provided on the outside of the valve body 44, and a return spring 46 connected to the valve body 44. The return spring 46 accumulates an elastic return force when the seal member 4 moves in the first direction. When the seal member 4 falls downward, the return spring 46 applies an elastic return force to the valve body 44, moving the guide block along the first guide slope. At this time, the movement of the seal member 4 is accompanied by rotation around the axis of the seal member 4 itself in the opposite direction to the rotation direction when interlocking with the transmission member 3, in addition to the movement in the second direction, so that the seal member 4 completes its return in both the axial direction and the axial direction. The seal ring 45 may be an O-ring or a Y-ring, or other types of seal rings 45 in the prior art.

In this embodiment, a fixed seat 5 is further provided for mounting the seal member 4. The fixed seat 5 is fixedly connected to the water divider 2 to form a chamber 51 for accommodating the seal member 4. One end of the return spring 46 is connected to the upper end of the chamber 51 to form a fixed end, and the other end extends into the valve body 44 and is fixedly connected thereto.

To further improve the feel when switching the water passage, the inner diameter S1 of the chamber 51 is the same as the inner diameter S2 of the water inlet of the water discharge passage 21. The valve body 44 further has an opening 441 that communicates the water inlet with the chamber 51. The opening 441 is for directing the water in the water discharge passage 21 to the chamber 51, and the lower end of the valve body 44 is urged upward by the water pressure F1 at the inlet. The upper end of the valve body 44 is urged downward by the water pressure F2 in the chamber 51. The inner diameter of the chamber 51 is formed to be the same as the inner diameter of the water supply port of the water discharge passage 21, so F1 and F2 are the same size and are in opposite directions. This allows the valve body 44 to be in a state where the water pressure is balanced whether it is in the open state or the closed state. There is no need for a force to counter the water pressure, which further reduces the force required to operate the switch and improves the feel of the switch.

This embodiment further includes an operating member 6 for rotating the transmission member 3 so that the user can easily apply force to rotate the transmission member 3. Specifically, the operating member 6 is a knob, which is rotationally connected to the upper surface of the fixed seat 5 via a snap and a locking groove in the rotation direction of the transmission member 3, and is fitted with a position restriction along the axial direction of the transmission member 3. Note that the rotation operation of the transmission body 3 can be performed using ordinary operating means such as a dial, push, or push button, in addition to the knob.

The fixed seat 5 has an opening 53 through which the D rib 34 of the transmission member 3 passes, and the knob and the D rib 34 of the transmission member 3 are fixedly connected to form an interlocking engagement. When assembling, the D groove 62 of the knob and the D rib 34 of the transmission member 3 are aligned, and the knob is inserted until the locking groove 63 of the knob engages with the snap 54 of the fixed seat 5.

In order to allow the user to have a clear sense when switching the water passages, an elastic positioning pin 61 is provided on one side of the rotating knob toward the upper surface of the fixed base 5, and a positioning groove 52 is provided on the upper surface of the fixed base 5 along the direction of rotation of the rotating knob. Each time the water discharge passage 21 is switched, the elastic positioning pin 61 moves to one of the positioning grooves 52, and when the spring of the elastic positioning pin 61 is released, the pin collides with the positioning groove 52, generating a sound to alert the user.

The water channel state of the three seal members 4 will be fully explained with reference to Figures 10 to 17. To distinguish between them, the three seal members are called seal member 1, seal member 2, and seal member 3, respectively, and the corresponding discharge channels are called channel 1, channel 2, and channel 3, respectively. Two first bosses 32 are provided on the transmission member 3, and the angle between the two first bosses 32 is 180°.

In the initial state shown in FIG. 10, one of the first bosses 32 cooperates with the seal member 2 to open the seal member 2, and the other first boss 32 is located between the seal member 1 and the seal member 3. Therefore, the seal member 1 and the seal member 3 are in a closed state, and at this time the water passage 2 is opened and the water passage 1 is closed. After the transmission member 3 is further rotated, the first boss 32 that was engaged with the seal member 10 is released from the seal member 2 and moves between the seal member 2 and the seal member 3. The seal member 2 returns to its initial position and closes the water passage 2, and the first boss 32 that was originally between the seal member 1 and the seal member 3 moves and engages with the seal member 1, the water passage 1 is opened, and the water passages 2 and 3 are in a closed state. Similarly, after the transmission member 3 is further rotated, the first boss 32 that was engaged with the seal member separates from the seal member 1, and the seal member 1 falls to its original position and closes the waterway 1, but the first boss 32 that was originally between the seal members 2 and 3 moves and engages with the seal member 3, opening the waterway 3, and the waterways 1 and 2 are closed.

Example 2
18 and 19, in this embodiment, a shower head incorporating the water path switching mechanism 1 described in embodiment 1 is provided. The knob is provided on the back of the shower body 7, the water path switching mechanism 1 is provided within the shower body 7, and below the water flow direction of the water path switching mechanism 1 is installed a water inclined body 8 having inclined water holes 81 provided corresponding to the different water discharge channels 21. Below the water flow direction of the water inclined body 8, a water spray surface cover 9 and a decorative cover 91 are provided.

In this embodiment, a handheld shower head is used as an example, but the water channel switching mechanism 1 can also be used with other water spray mechanisms such as a top shower head or kitchen shower head, and the installation position and operating principle are similar to this embodiment, so no further examples will be shown here.

As mentioned above, only the preferred specific embodiments of the present invention have been described, but the design concept of the present invention is not limited to these, and a person skilled in the art could make insubstantial changes to the present invention using these concepts within the technical scope disclosed in the present invention, any of which would be considered an infringement of the scope of protection of the present invention.

Claims (16)

A waterway switching mechanism,
The device includes a water dividing body, a transmission member, and a seal member.
The water diversion body is provided with at least two water discharge passages, and the seal member is provided in each water discharge passage so as to be movable along a first direction relative to the water diversion body, thereby causing the seal member to open the water discharge passage;
The transmission member is rotated in a sequential manner with the seal member and in a relative rotation state.
When the transmission member and the seal member are in the interlocking rotation state in which they are interlockingly engaged with each other and rotate in interlocking with the water divider ,
The water divider and the seal member are inverted to move the seal member along a first direction;
When the transmission member and the seal member are in the relative rotation state in which they rotate relative to each other,
The sealing member engages with the transmission member when the interlocking engagement with the transmission member is released, the transmission member rotates relative to the sealing member, and the transmission member and the sealing member further move the sealing member in a first direction by inverted engagement. A waterway switching mechanism,
The device includes a water dividing body, a transmission member, and a seal member.
The water diversion body is provided with at least two water discharge passages, and the seal member is provided in each water discharge passage so as to be movable along a first direction relative to the water diversion body, thereby causing the seal member to open the water discharge passage;
The transmission member is engaged with the seal member in a coordinated manner to rotate the seal member about its own axis, thereby rotating the seal member relative to the water dividing body;
the water diversion body and the seal member have a first inverting member and a first inverting mating member for translating rotation of the seal member relative to the water diversion body into movement of the seal member along the first direction relative to the water diversion body;
The water divider is further provided with a stopper for releasing the interlocking engagement between the transmission member and the seal member, and the seal member is rotated until it is engaged with the stopper to limit its position, and then rotated relative to the transmission member,
A waterway switching mechanism characterized in that the transmission member and the seal member have a second reversible member and a second reversible engaging member that engage with each other to convert rotation of the transmission member relative to the seal member into movement of the seal member along the first direction relative to the water dividing body. The waterway switching mechanism according to claim 2, characterized in that a first boss and a second boss are provided on the side of the transmission member and the seal member, respectively, protruding outward in the radial direction, and when the seal member is in a position to close the discharge waterway, the first boss and the second boss are on the same horizontal plane. The waterway switching mechanism according to claim 3, characterized in that the first inverted member is a first guide slope, and the first inverted fitting member is a guide block that protrudes outward along the radial direction of the seal member. The waterway switching mechanism according to claim 4, characterized in that the position-regulating member is a surface provided at the end of the guide slope for position-regulating engagement with the second boss. The waterway switching mechanism according to claim 3, characterized in that the second reversible member is a second guide slope provided on the upper surface of the first boss, the second reversible fitting member is the bottom surface of the second boss, and when the seal member releases the interlocking engagement with the transmission member, the bottom surface of the second boss and the bottom of the second guide slope are on the same horizontal plane. The waterway switching mechanism according to claim 6, characterized in that the upper surface of the first boss has a third guide slope on the side away from the second guide slope, and the third guide slope engages with a second inverted engaging member so as to convert rotation of the seal member relative to the transmission member into movement of the seal member along a second direction relative to the water divider, the second direction being the opposite direction to the first direction. The waterway switching mechanism according to claim 7, characterized in that the third guide slope and the second guide slope are provided relative to the central axis of the first boss. The waterway switching mechanism according to claim 2, characterized in that the sealing members are distributed rotationally symmetrically around the transmission member. The waterway switching mechanism according to claim 2, characterized in that the seal member is a water passage valve having a valve body, a seal ring provided on the outside of the valve body, and a return spring connected inside the valve body, and when the seal member moves in the first direction, an elastic return force is accumulated in the return spring. The waterway switching mechanism according to claim 10, further comprising a fixed seat fixedly connected to the water distribution body to form a chamber for accommodating the sealing member, one end of the return spring being connected to the upper end of the chamber to form a fixed end, and the other end extending into the valve body and fixedly connected to the valve body. The waterway switching mechanism according to claim 11, characterized in that the inner diameter of the chamber is the same as the inner diameter of the water inlet of the discharge channel, and the valve body further has an opening that connects the water inlet to the chamber. The waterway switching mechanism according to claim 10, further comprising an operating member for rotating the transmission member. The waterway switching mechanism described in claim 13, characterized in that the operating member is a knob, and the knob is rotatably connected to the upper surface of the fixed seat fixedly connected to the water distribution body by a snap and a locking groove in the rotational direction of the transmission member, and is fitted in a positionally restricted manner along the axial direction of the transmission member. The waterway switching mechanism described in claim 14, characterized in that an elastic positioning pin is provided on the side of the knob facing the upper surface of the fixed seat, and a positioning groove is provided on the upper surface of the fixed seat along the rotation direction of the knob. A sprinkler device comprising the water channel switching mechanism according to any one of claims 1 to 15.