A waterway switching structure and a shower head

Abstract

The present invention discloses a waterway switching mechanism and a shower head. The waterway switching structure includes: a housing, in which a driving unit capable of moving relative to the housing is provided; a reset unit capable of moving the driving unit back to its original position; a transmission wheel and a water distribution plate that form a synchronous rotation connection relationship; a fixed seat that rotates in cooperation with the water distribution plate to switch the waterway; and a waterway switch for switching the water flow rate. Wherein: in the first water flow or water pressure state, the driving unit moves in the first direction under the action of the water flow or water pressure, overcoming the acting force of the reset unit. The present invention can make better use of the space of the shower head, and the appearance can be made smaller and more delicate.

Description

Technical Field

[0001] The present invention relates to a waterway switching structure and a shower head. Background Art

[0002] Existing shower heads generally have multiple water outlet functions for users to choose, such as ordinary shower head water outlet, central concentrated water outlet, etc. There are also various ways to switch the water flow, such as toggle switch, button switch, etc.

[0003] For button switch, for example: CN 201010138312.0 discloses a pipeline cut-off or switching valve, which is used to switch between at least two different outlets by relying on a valve closing body and a valve seat. The valve includes an actuating device that can be actuated by the user. The actuating device acts on a propulsion device to advance the valve closing body from one stable and discontinuous position to another stable and discontinuous position. The propulsion can be generated either by the interaction of inclined surfaces or by relying on the water flow.

[0004] However, for traditional button-structured shower heads including the above patent, generally the button position is relatively large, and it is impossible to meet the requirement of a small and delicate shower head. For sealing requirements, the switching force has to be made relatively large, resulting in a poor hand feeling. In addition, it adopts a ballpoint pen refill structure, and the upper and lower teeth of the refill need to be accurately aligned for switching, with high precision requirements. Summary of the Invention

[0005] The main purpose of the present invention is to provide a waterway switching structure.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

[0007] A waterway switching mechanism includes:

[0008] A housing, in which a driving unit capable of moving relative to the housing is provided;

[0009] A reset unit capable of moving the driving unit back to its original position;

[0010] A transmission wheel and a water distribution plate that form a synchronous rotation connection relationship with the transmission wheel;

[0011] A fixed seat that rotates in cooperation with the water distribution plate to switch the waterway; and

[0012] A waterway switch for switching the water flow rate, wherein:

[0013] In the first water flow or water pressure state, the driving unit moves in the first direction under the action of the water flow or water pressure, overcoming the acting force of the reset unit;

[0014] Under the second water flow or water pressure state, the force of the reset unit causes the driving unit to move in the second direction, and the driving unit drives the transmission wheel to rotate by an angle.

[0015] In one embodiment, the driving unit comprises a push rod and a shifting rod connected together, wherein the shifting rod is provided with a hook for shifting the transmission wheel.

[0016] In one embodiment, the push rod includes a rod body and an enlarged portion having a larger cross-sectional area than the rod body.

[0017] In one embodiment, the push rod is provided with a groove near the front end, and a buckle groove is provided at the rear end of the lever. The front end of the push rod is located in the buckle groove and can move in the buckle groove.

[0018] In one embodiment, the transmission wheel is disposed on an upper surface of a water diversion cover, and the water diversion plate is located on a lower surface of the water diversion cover.

[0019] In one embodiment, the water diversion cover includes a main body with a through hole in the middle and a cylindrical body on one side of the main body. The cylindrical body is a shell of a driving unit. The main body is provided with an opening at the bottom of the cylindrical body, and the opening passes through the bottom wall of the cylindrical body.

[0020] In one embodiment, a limiting plate is provided next to the through hole, and the driving unit touches the limiting plate and deforms during movement, wherein the deformation is such that the end of the driving unit bends toward the driving wheel.

[0021] In one embodiment, the limiting plate first extends vertically upward from the upper surface of the body, and then extends horizontally toward the through hole to form an L shape.

[0022] In another embodiment, the driving unit touches the transmission wheel and deforms when moving in the first direction; the deformation is that the end of the driving unit bends in a direction away from the driving wheel.

[0023] In one embodiment, a non-circular hole is provided in the middle of the transmission wheel; a gear tooth is provided on the edge of the transmission wheel; a non-circular column is provided upward in the middle of the water diversion plate, the column passes through the through hole of the water diversion cover from bottom to top, and the upper end is inserted into the non-circular hole of the transmission wheel, so that the water diversion plate and the transmission wheel form a synchronous rotation connection relationship; water holes are provided at intervals around the column on the water diversion plate.

[0024] In one embodiment, anti-rotation teeth are provided at the edge of the water diversion plate, and anti-rotation tooth grooves are provided at corresponding positions of the fixing seat.

[0025] In one embodiment, the water switch is a button assembly installed in a water pipe, and the button assembly includes a valve core, a valve core return spring and a button cover, wherein the valve core has at least one water blocking position and one water passing position relative to the water pipe.

[0026] In another embodiment, the waterway switch is the faucet switch of the shower head.

[0027] Another object of the present invention is to provide a shower head, which includes the aforementioned waterway switching mechanism.

[0028] In one embodiment, for a shower head, the waterway switch is located on the handle.

[0029] The present invention also provides a waterway switching method, including the following steps:

[0030] Step 1. The waterway switch allows water to pass through. The water flow or water pressure pushes the driving unit to move in the first direction, and the water distribution component is in the first water outlet state; at this time, the spring is compressed or stretched by the driving unit.

[0031] Step 2. The waterway switch reduces the water flow or cuts off the water supply. The spring makes the driving unit move in the second direction, and the second direction is opposite to the first direction; the driving unit drives the transmission wheel and the water distribution disc that forms a synchronous rotation connection relationship with the transmission wheel to rotate by an angle.

[0032] Step 3. The waterway switch allows water to pass through. The water flow or water pressure pushes the driving unit to move in the first direction again, and the water distribution component is in the second water outlet state; at this time, the spring is compressed or stretched again.

[0033] Compared with the background technology, the technical solution of the present invention has the following advantages:

[0034] 1. The present invention provides a waterway switching structure, which relies on the waterway switch to control the magnitude of the water flow / water pressure, and then drives the driving unit under the action of the water flow / water pressure, and then drives the transmission wheel under the action of the reset unit, so as to be able to drive the switching of the waterway.

[0035] 2. When the button assembly is adopted in the present invention, the button assembly only needs to control the on / off of the water flow and does not need to forcefully drive other structures. Therefore, the problem of large switching force of the traditional button can be effectively solved, and the hand feeling is good.

[0036] 3. When used for a shower head, the waterway switch and components such as the water distribution disc of the present invention are not in the same position of the shower head, which can make better use of the space of the shower head, and the appearance can be made smaller and more delicate.

[0037] 4. The structure is simple, and it is easy to assemble and produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the drawings and embodiments.

[0039] Figure 1 It is a three-dimensional schematic diagram of the shower head of the present invention.

[0040] Figure 2The second three-dimensional schematic diagram of the shower head of the present invention.

[0041] Figure 3 The exploded structural schematic diagram of the button assembly of the present invention.

[0042] Figure 4 The schematic diagram of the button in the popped-up state.

[0043] Figure 5 The schematic diagram of the button in the pressed state.

[0044] Figure 6 The exploded structural schematic diagram of the water diverter assembly.

[0045] Figure 7 The assembled structural schematic diagram of the water diverter assembly.

[0046] Figure 8 The schematic diagram of the back structure of the water diverter cover.

[0047] Figure 9 The schematic diagram of the front structure of the water diverter cover.

[0048] Figure 10 The three-dimensional structural schematic diagram of the water diverter plate.

[0049] Figure 11 The three-dimensional structural schematic diagram of the push rod.

[0050] Figure 12 The three-dimensional structural schematic diagram of the lever.

[0051] Figure 13 The three-dimensional structural schematic diagram of the transmission wheel.

[0052] Figure 14 The schematic diagram of the back structure of the fixed seat.

[0053] Figure 15 The schematic diagram of the front structure of the fixed seat.

[0054] Figure 16 The first state schematic diagram of the water diverter assembly, where A, B, and C are different perspectives respectively.

[0055] Figure 17 The second state schematic diagram of the water diverter assembly, where A, B, and C are different perspectives respectively.

[0056] Figure 18 One of the usage states of the present invention, where A and B are different angles respectively.

[0057] Figure 19 Another usage state of the present invention, where A and B are different angles respectively.

[0058] Figure 20This is the third usage state of the present invention, where A and B are at different angles respectively.

[0059] Figure 21 This is the fourth usage state of the present invention, where A and B are at different angles respectively.

[0060] Figure 22 This is the fifth usage state of the present invention, where A and B are at different angles respectively. Detailed implementation manners

[0061] Please refer to Figure 1 and Figure 2 For the shower head of the present invention, it includes a main body 100, a water distribution component 200, a water outlet component 300, a handle 400, and a button component 500. Among them, the button component 500 is arranged in the middle of the handle 400.

[0062] Refer to Figures 3 to 5 The button component 500 includes a valve core return spring 510, a valve core 520, a sealing gasket 530, a button cover 540, and a sealing ring 550. Among them, a bulged part 521 is provided in the middle of the valve core 520, and multiple grooves 522 are provided on the bulged part 521, and multiple sealing rings 550 are respectively arranged in the multiple grooves 522.

[0063] The middle of the handle 400 has a button component opening 430, and the button component 500 is installed in the button component opening 430. Among them, the valve core return spring 510 is sleeved on the valve core 520, one end abuts against the bulged part 521, and the other end abuts against a groove 410 on the inner wall of the other handle opposite to the button component opening 430. The sealing gasket 530 is sleeved on the other end opposite to the spring 510, and the button cover 540 is sleeved outside the sealing gasket 530.

[0064] Refer to Figure 4 The handle 400 has a water inlet 420. When the button cover 540 is in an unpressed state, the bulged part 521 of the valve core 520 is located above the water inlet 420. At this time, the water flow can pass through the periphery of the valve core 520 from the right side of the handle and then enter the water distribution component 200 from the left side of the handle. At this time, the valve core return spring is in a stretched state.

[0065] Refer to Figure 5 When the button cover 540 is pressed, the valve core 520 moves downward, and the bulged part 521 of the valve core 520 blocks the water inlet 420. At this time, the water flow is cut off and cannot enter the water distribution component 200 from the water inlet 420.

[0066] Refer to Figure 6 The water distribution component includes a push rod 210, a spring 220, a water distribution cover 230, a transmission wheel 240, a lever 250, a water distribution disc 260, and a fixed seat 280.

[0067] Among them, referring to Figures 7 to 9 , the water dividing cover 230 includes a body 231 with a through hole 233 in the middle. A cylindrical body 234 is provided on one side of the body close to the handle. Two limiting plates 232 and 235 are provided beside the through hole 233. Among them, the limiting plate 232 extends vertically upward from the upper surface of the body 231 first and then horizontally towards the through hole 233 to form an L shape. The limiting plate 235 is arranged between the limiting plate 232 and the cylindrical body 234. An opening 237 is provided at the bottom position of the cylindrical body of the body, and the opening 237 penetrates the bottom wall of the cylindrical body.

[0068] The water dividing plate 260 is arranged on the lower surface of the water dividing cover 230, and the transmission wheel 240 is arranged on the upper surface of the water dividing cover 230.

[0069] Referring to Figure 13 , the middle of the transmission wheel 240 has a non-circular hole 241. In this embodiment, specifically, it is a long strip hole. Gear teeth 242 are provided on the edge of the transmission wheel 240.

[0070] Referring to Figure 10 , a non-circular column 261 is provided upward in the middle of the water dividing plate 260. The column 261 passes through the through hole 233 of the water dividing cover 230 from bottom to top, and the upper end is inserted into the non-circular hole 241 of the transmission wheel 240, so that the water dividing plate 260 and the transmission wheel 240 form a synchronous rotation connection relationship. Three water passing holes 262, 263 and 264 are provided at intervals around the column 261 on the water dividing plate 260. Anti-rotation teeth 265 are provided on the edge of the water dividing plate 260. In this embodiment, there are three anti-rotation teeth 265, which are arranged at intervals along the circumferential direction. A snap spring groove 266 is also provided near the upper end of the column 261, and a snap spring 267 is provided on it.

[0071] Referring to Figure 11 , the push rod 210 includes a rod body 211. A groove 212 is provided on the rod body 211 near the front end 215, and a bulged part 213 is provided at the rear end. The bulged part 213 has a cavity 214 with an opening facing backward.

[0072] Referring to Figure 12 , a snap buckle groove 251 is provided at the tail end of the shift lever 250. The front end 215 of the push rod 210 is located in the snap buckle groove 251 and can move in the snap buckle groove 251. A hook 253 is provided on one side of the front end of the shift lever 250, and a slope 252 is provided on the other side.

[0073] Referring to Figure 14 and Figure 15The upper surface of the fixing seat 280 is provided with a circular groove 281, and the side of the circular groove 281 is provided with a plurality of anti-rotation tooth grooves 282, and the anti-rotation tooth grooves 282 cooperate with the anti-rotation teeth 265 at the edge of the water diversion plate 260, so that the water diversion plate 260 can only rotate in one direction in the circular groove 281. In this embodiment, six water outlet holes 283 are provided in the circular groove 281, and the six water outlet holes are divided into two groups by the retaining ribs 284.

[0074] See also Figure 16 and Figure 17 When the water-dividing assembly is installed, the spring 220 is sleeved on the push rod 210, and the push rod 210 is arranged in the cylinder 234. A limit block 290 is also provided at one end of the cylinder 234 close to the middle of the water-dividing cover 230. A limit hole 291 is provided in the middle of the limit block 290, and the push rod 210 is penetrated in the limit hole 291 to improve the line accuracy during movement; the rear end of the lever 250 is sleeved with the front end of the push rod 210, and the end with a hook and an inclined surface is located below the L-shaped limit plate 232.

[0075] The use of the entire shower is as follows:

[0076] See also Figure 18 , default position: the button is in the pop-up state, water flows through the valve core 520, passes through the adapter component 600 and reaches the water distribution component 200, such as Figure 16 As shown, the push rod 210 in the water distribution assembly 200 pushes the lever 250 under the action of water pressure. As the pushing distance increases, the head of the lever is deformed under the action of the limit plate 232 of the water distribution cover to prepare for the gear teeth 242 on the hook transmission wheel 240. The water flows into the water distribution plate 260 from the opening 237. At this time, the three water holes (263, 263, 264) of the water distribution plate 260 and the six water outlet holes 283 of the fixing seat cooperate to form a first water outlet function (3 of the 6 holes are used for water outlet, and the other 3 are shielded). In this embodiment, the first water outlet function is outer ring shower water. At this time, the spring 220 is compressed and the opening 237 is in an open state.

[0077] See also Figure 19 , Button pressed state: Press the button, the main water path is temporarily cut off by the valve core 520 of the button assembly, see Figure 17 As the water pressure disappears, the push rod 210 returns to the right under the action of the spring 220, driving the lever 250 to move from left to right. During this process, the hook 253 of the lever 250 acts on the gear teeth 242 of the transmission wheel 240, causing the transmission wheel 240 to rotate by an angle. At the same time, the transmission wheel 240 drives the water diversion plate 260 to rotate by the same angle, completing the gear switching, and the shower water discharge function switching is completed. However, since the button is not released, the main water channel is cut off, and the shower temporarily does not discharge water. At this position, the opening 237 is blocked or covered by the enlarged part of the push rod 210.

[0078] See Figure 20 : When the button is in the popped-up state, release the button, and the main waterway resumes water supply. The push rod in the water distribution assembly regains the acting force of the water pressure. Under the acting force of the water pressure, the push rod 210 pushes the lever, and the head of the lever touches the limit plate 232 of the water distribution cover, and then undergoes a certain deformation (but it will not cause the transmission wheel to move because there are anti-rotation teeth 265 on the water distribution plate, so the water distribution plate will not rotate in reverse), preparing for the next gear shift. Since the main waterway has resumed water supply, the water spraying mode of the shower head is the second water spraying function at this time. In this embodiment, the second water spraying function is mixed water.

[0079] See Figure 21 : When the button is pressed again, the main waterway is temporarily cut off by the valve core 520 of the button assembly. The push rod in the water distribution assembly loses the acting force of the water pressure and resets under the acting force of the spring. During the reset process, the hook on the lever hooks the gear teeth on the transmission wheel and rotates by another angle. At the same time, the transmission wheel drives the water distribution plate to rotate by the same angle, completing the gear shift, and the water spraying function of the shower head switches to the next gear and is completed.

[0080] See Figure 22 : When the button is popped up again, release the button, and the main waterway resumes water supply. The push rod in the water distribution assembly regains the acting force of the water pressure. Under the acting force of the water pressure, the push rod pushes the lever, and the head of the lever touches the limit plate 232 of the water distribution cover, and then undergoes a certain deformation, preparing for the next gear shift. Since the main waterway has resumed water supply, the water spraying mode of the shower head is the third water spraying function at this time. In this embodiment, the third water spraying function is the middle flower water.

[0081] In another embodiment, the button assembly may not be provided, and the on-off of the waterway is controlled by the faucet switch of the shower head itself. The faucet switch is a common knob switch that can adjust both the cold and hot water ratio and the water flow rate. This switch is installed at the cold and hot water regulating valve. When the handle is rotated, the cold and hot water ratio can be adjusted, and when the handle is lifted or pressed, the water flow rate can be controlled.

[0082] In another embodiment, the limit plate may not be provided, but the lever has an elastic hook. When the elastic hook moves in the first direction, the hook deforms and springs out under the action of the gear teeth of the transmission wheel; when resetting and retracting, the hook hooks the gear teeth to make the transmission wheel rotate.

[0083] The above is only a preferred embodiment of the present invention, and thus the scope of implementation of the present invention cannot be limited thereby. That is, equivalent changes and modifications made according to the scope of the present invention patent and the content of the specification should still fall within the scope covered by the present invention.

Claims

1. A waterway switching mechanism, characterized in that: include: A housing, wherein a driving unit capable of moving relative to the housing is disposed in the housing; The driving unit comprises a push rod and a lever connected together, wherein the lever is provided with a hook for moving the transmission wheel; the push rod comprises a rod body and an enlarged portion with a cross-sectional area larger than the rod body; the push rod is provided with a groove near the front end, and a buckle groove is provided at the rear end of the lever, and the front end of the push rod is located in the buckle groove and can move in the buckle groove; A reset unit capable of moving the drive unit back to its original position; A driving wheel and a water-dividing plate which forms a synchronously rotating connection with the driving wheel; a non-circular hole is provided in the middle of the driving wheel; a gear tooth is provided on the edge of the driving wheel; a non-circular column is provided upward in the middle of the water-dividing plate, the column passes through the through hole of the water-dividing cover from bottom to top, and the upper end is plugged into the non-circular hole of the driving wheel, so that the water-dividing plate and the driving wheel form a synchronously rotating connection; water holes are provided at intervals around the column on the water-dividing plate; anti-rotation teeth are provided on the edge of the water-dividing plate, and anti-rotation tooth grooves are provided at the corresponding position of the fixed seat; A fixing seat that rotates with the water distribution plate to switch the water path; and A water circuit switch used to switch the water flow size, where: In the first water flow or water pressure state, the driving unit overcomes the force of the reset unit and moves in the first direction under the action of the water flow or water pressure; Under the second water flow or water pressure state, the force of the reset unit causes the driving unit to move in the second direction, and the driving unit drives the transmission wheel to rotate by an angle.

2. The waterway switching mechanism according to claim 1, characterized in that: The driving wheel is arranged on the upper surface of a water distribution cover, and the water distribution plate is located on the lower surface of the water distribution cover.

3. The waterway switching mechanism according to claim 2, characterized in that: The water diversion cover comprises a body with a through hole in the middle and a cylinder on one side. The cylinder is a shell of a driving unit. The body has an opening at the bottom of the cylinder, and the opening passes through the bottom wall of the cylinder.

4. The waterway switching mechanism according to claim 3, characterized in that: A limiting plate is arranged beside the through hole, and the driving unit touches the limiting plate and deforms during the movement, and the deformation is that the end of the driving unit bends toward the driving wheel.

5. The waterway switching mechanism according to claim 4, characterized in that: The limiting plate first extends vertically upward from the upper surface of the body, and then extends horizontally toward the through hole to form an L shape.

6. The waterway switching mechanism according to claim 3, characterized in that: The driving unit touches the transmission wheel and deforms when moving in the first direction; the deformation is that the end of the driving unit bends in a direction away from the driving wheel.

7. A waterway switching mechanism according to claim 1, characterized in that: The waterway switch is a button assembly installed in a waterway pipe, and the button assembly includes a valve core, a valve core return spring and a button cover, wherein the valve core has at least one water blocking position and one water passing position relative to the waterway pipe.

8. A waterway switching mechanism according to claim 1, characterized in that: The water circuit switch is a faucet switch of a shower.

9. A shower head, characterized in that, A waterway switching mechanism comprising any one of claims 1-8.

10. A shower head according to claim 9, characterized in that, The water switch is located on the handle.

11. A waterway switching method, using the waterway switching mechanism according to claim 1, the method comprising the following steps: Step 1. The water circuit switch is turned on, and the water flow or water pressure pushes the driving unit to move in the first direction, and the water distribution component is in the first water outlet state; at this time, the spring is compressed or stretched by the driving unit; Step 2. The waterway switch reduces or cuts off the water flow, and the spring causes the drive unit to move in the second direction, where the second direction is opposite to the first direction; the drive unit drives the transmission wheel and the water distribution plate that is synchronously rotationally connected to the transmission wheel to rotate by an angle; Step 3. The waterway switch allows water to pass through, and the water flow or water pressure pushes the drive unit to move in the first direction again, and the water distribution component is in the second water outlet state; at this time, the spring is compressed or stretched again.

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