Automatic switching three-way water segregator

Abstract

The utility model provides an automatic switching three-way water segregator, which comprises a body, a water inlet, a first water outlet and a second water outlet, the valve seat is arranged in the body, the valve seat is provided with a valve cavity, a water inlet through-flow opening, a first water outlet through-flow opening and a second water outlet through-flow opening, the water inlet through-flow opening, the first water outlet through-flow opening and the second water outlet through-flow opening are respectively communicated with the valve cavity, the water inlet through-flow opening is communicated with the water inlet, the first water outlet through-flow opening is communicated with the first water outlet, and the second water outlet through-flow opening is communicated with the second water outlet; the valve element assembly comprises a valve rod, a piston piece and a blocking part, the piston piece and the blocking part are arranged at the two ends of the valve rod respectively, the piston piece is in sliding fit with the inner wall of the valve cavity and provided with a through water passing hole, the valve cavity communicates with the first water outlet through the water passing hole, and the blocking part is in opening and closing fit with the second water outlet through-flow opening; when water passes through a first water outlet channel connected with the first water outlet, the valve element assembly moves towards the first water outlet through-flow opening so as to close the second water outlet through-flow opening. When the first water outlet channel stops water or stops water, the valve element assembly moves towards the second water outlet through-flow opening so as to open the second water outlet through-flow opening.

Description

Technical Field

[0001] The utility model relates to the technical field of water distributors, in particular to an automatic switching three-way water distributor. Background Art

[0002] In order to facilitate the switching between the handheld shower and the overhead shower, some existing technologies use a manual water divider for switching and water distribution. This manual water divider has a relatively complex structure, is relatively expensive, and is relatively inconvenient to operate. Other existing technologies use hydraulic power to automatically switch and divide water, which uses water pressure to switch. For example, the "exposed hydraulic automatic switching device" provided by the Chinese utility model patent with announcement number CN201543541U can realize the automatic switching between the head shower and the handheld shower by using hydraulic power. However, in this technical solution, since no water hole is provided on the large diameter flange 32, once the large diameter flange 32 of the control rod 3 is Figure 2 When the control rod 3 moves upward into the switching seat 2 and blocks the second outlet 23, the control rod 3 continues to move upward, which will form a negative pressure in the waterway downstream of the second outlet 23. Under the effect of the negative pressure, it is difficult for the control rod 3 to continue to move upward, and a relatively high water pressure is required. If the water pressure is insufficient, the control rod 3 may not even be driven to move upward into position, and the first outlet 22 may not be opened smoothly. Therefore, the switching function of this solution is less reliable when the water pressure is low.

[0003] In view of this, it is necessary to improve the hydraulic automatic switching device of the prior art so that reliable switching can be achieved even under low water pressure conditions. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide an automatic switching three-way water distributor, which can achieve the purpose of reliable switching under low water pressure conditions and has a simple structure.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] An automatic switching three-way water distributor, comprising:

[0007] A main body having a water inlet, a first water outlet, and a second water outlet;

[0008] a valve seat, arranged in the body, the valve seat having a hollow valve cavity and a water inlet flow port, a first water outlet flow port and a second water outlet flow port respectively connected to the valve cavity, the water inlet flow port being connected to the water inlet, the first water outlet flow port being connected to the first water outlet, the second water outlet flow port being connected to the second water outlet, and the first water outlet flow port and the second water outlet flow port being arranged opposite to each other;

[0009] A valve core assembly, comprising a valve stem, a piston member disposed at a first end of the valve stem, and a blocking portion disposed at a second end of the valve stem, wherein the piston member is slidably matched with an inner wall of the valve cavity, a through water hole is provided on the piston member, the valve cavity is connected with the first water outlet through the water hole, the blocking portion is openably matched with the second water outlet flow port, the water inlet flow port is located between the piston member and the blocking portion, and the valve core assembly slides between the first water outlet flow port and the second water outlet flow port;

[0010] When water flows through the first water outlet channel connected to the first water outlet, the valve core assembly moves toward the first water outlet flow port to the first position to close the second water outlet flow port; when water stops or cuts off the first water outlet channel connected to the first water outlet, the valve core assembly moves toward the second water outlet flow port to the second position to open the second water outlet flow port.

[0011] In some preferred embodiments, when water flows through the first water outlet channel connected to the first water outlet, the water pressure applied to the piston member is greater than the water pressure applied to the sealing portion, and the valve core assembly moves to the first position under the action of the water pressure; when water is stopped or cut off in the first water outlet channel connected to the first water outlet, the water pressures applied to the inner and outer sides of the piston member are balanced.

[0012] Some preferred embodiments further include an elastic member, which is used to apply an elastic force to the valve core assembly to move it to the first position. When water flows through the first water outlet channel connected to the first water outlet, the sum of the water pressure of the water in the valve chamber acting on the piston member and the elastic force of the elastic member acting on the piston member is greater than the water pressure of the water in the valve chamber acting on the sealing portion, and the valve core assembly moves to the first position under the combined action of the water pressure and the elastic force; when the first water outlet channel connected to the first water outlet stops or cuts off water, the water pressure on the inner and outer sides of the piston member is balanced, and the water pressure of the water in the valve chamber acting on the sealing portion is greater than the elastic force of the elastic member acting on the piston member.

[0013] In some preferred embodiments, an annular seal is provided between the sealing portion and the second water outlet flow port of the valve seat, the sealing portion is a conical structure, the inner diameter of the sealing portion gradually increases along the water outlet direction of the second water outlet flow port, and the conical surface of the sealing portion is sealed with the inner side of the annular seal.

[0014] In some preferred embodiments, the valve core assembly also includes a special-shaped seal made of a soft material, the special-shaped seal includes a bottom wall and a side wall connected to each other, the bottom wall is installed on the first end of the valve stem and fits with the piston member, the side wall extends toward the second end of the valve stem, the outer diameter of the side wall gradually increases in the direction toward the second end of the valve stem, the wall thickness of the side wall gradually decreases in the direction toward the second end of the valve stem, the end of the side wall with a larger outer diameter fits with the inner wall of the valve cavity, and the bottom wall is provided with a through hole corresponding to the water hole.

[0015] In some preferred embodiments, the piston member includes a piston plate and a piston ring connected to the periphery of the piston plate, the piston ring is slidingly guided with the inner wall of the valve cavity, and the water hole is opened on the piston plate.

[0016] In some preferred embodiments, the valve seat is a hollow cylindrical structure, the first water outlet port and the second water outlet port are respectively arranged at two ends of the valve seat, the water inlet port is arranged on the side wall of the valve seat, and the valve stem is centrally located in the valve seat.

[0017] In some preferred embodiments, the first water outlet flow port is coaxially arranged with the first water outlet, and the valve seat is installed in the body through the first water outlet.

[0018] Some preferred embodiments further include a first water outlet connector, which, when connected to the first water outlet, limits the valve seat in the body.

[0019] In some preferred embodiments, the first water outlet channel leads to a hand-held showerhead, the second water outlet leads to an overhead showerhead directly or through the second water outlet channel, and the body is also fixedly connected to a socket for inserting and placing the hand-held showerhead.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The utility model provides a through water hole on the piston member, and the valve cavity of the valve seat is connected with the first water outlet through the water hole. When the first water outlet channel connected to the first water outlet stops water or cuts off water, during the process that the valve core assembly moves toward the second water outlet flow port to the second position, water in the valve cavity can enter the first water outlet channel through the water hole, thereby effectively avoiding the formation of negative pressure in the first water outlet channel, and the water pressure on both sides of the piston member can be kept balanced, so that the valve core assembly can smoothly open the second water outlet flow port even under lower water pressure, thereby realizing automatic hydraulic switching, with a simple structure and reliable functions.

[0022] 2. An elastic member is provided to assist the valve core assembly in moving to the first position, so that when water flows through the first water outlet channel connected to the first water outlet, the valve core assembly can close the second water outlet promptly, quickly and reliably with the assistance of the elastic force, and the automatic switching function is more stable and reliable.

[0023] 3. The sealing part is a conical structure, and the inner diameter of the sealing part gradually increases along the water outlet direction of the second water outlet. The conical surface of the sealing part cooperates with the inner seal of the annular seal. The conical surface sealing method is between the end face seal and the radial seal. On the one hand, it enables the end face seal to quickly open the first water outlet. On the other hand, it enables the radial seal to design the sealing part to be smaller, thereby saving the internal space occupied by the sealing part.

[0024] 4. The valve core assembly is also provided with a special-shaped seal made of soft material. The advantages of providing the special-shaped seal are as follows: on the one hand, when water is flowing through the first water outlet channel, the end with a larger outer diameter of the side wall of the special-shaped seal will be sealed against the inner wall of the valve cavity under the action of the water pressure in the valve cavity, and the greater the water pressure, the tighter the fit, so that a small part of the water flow will not flow away from the gap between the side wall of the piston member and the inner wall of the valve cavity. The water flow can flow more concentratedly through the through hole of the special-shaped seal and the water hole of the piston member, and the water pressure will not be dispersed, so that the water pressure can be fully utilized to drive the piston member, which is more reliable; on the other hand, the end with a larger outer diameter of the side wall of the special-shaped seal is sealed against the inner wall of the valve cavity, which can balance the posture of the valve core assembly, avoid the problem of the piston member being stuck or stuck after a certain tilt due to the existence of the gap between the piston member and the inner wall of the valve cavity, and the movement of the piston member is smoother.

[0025] 5. The first water outlet flow port is coaxially arranged with the first water outlet, and the valve seat is installed in the body through the first water outlet. In this way, there is no need to open an installation port on the body specifically for installing the valve seat, which makes the structure simpler and more convenient to assemble.

[0026] 6. When the first water outlet connector is connected to the first water outlet, the valve seat is limited in the body, making assembly simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0028] in:

[0029] Figure 1 This is a front view of an automatic switching three-way water distributor of the utility model;

[0030] Figure 2 It is a three-dimensional exploded diagram of an automatic switching three-way water distributor of the utility model;

[0031] Figure 3 This is a sectional exploded view of an automatic switching three-way water distributor of the utility model;

[0032] Figure 4 It is a cross-sectional schematic diagram of an automatic switching three-way water distributor of the utility model in a state where water is flowing through the first water outlet channel (water flows out from the first water outlet, and water stops at the second water outlet);

[0033] Figure 5 It is a cross-sectional schematic diagram of an automatic switching three-way water distributor of the utility model in a water-stopping state of the first water outlet channel (water is stopped at the first water outlet and water is discharged at the second water outlet);

[0034] Figure 6 The utility model is a schematic diagram of an automatic switching three-way water distributor used in a shower system for installation.

[0035] The reference numerals in the figure are:

[0036] 1-Handheld showerhead; 2-Overhead showerhead; 3-Water distributor; 4-First water outlet channel;

[0037] 10-main body; 11-water inlet; 12-first water outlet; 13-second water outlet;

[0038] 20-valve seat; 21-valve cavity; 22-water inlet; 23-first water outlet; 24-second water outlet;

[0039] 30-valve core assembly; 31-valve stem; 32-piston member; 321-piston plate; 3211-water hole; 322-piston ring; 33-blocking part; 34-special-shaped sealing member; 341-bottom wall; 3411-through hole; 342-side wall; 35-C-shaped buckle;

[0040] 40- elastic member;

[0041] 50- annular seal;

[0042] 60-first water outlet connector;

[0043] 70-socket. DETAILED DESCRIPTION

[0044] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0045] See also Figures 1 to 6 The utility model provides an automatic switching three-way water distributor 3 in one embodiment, which can be used to automatically switch between two water flows. This embodiment uses the three-way water distributor 3 to automatically switch the water flow of the hand-held shower 1 and the overhead shower 2 of the shower system as an example. Figure 6 As shown in FIG. 1 , a schematic diagram of a three-way water distributor 3 installed on a shower system. Of course, it can be understood that the three-way water distributor 3 of the present invention can also be used to control other water outlet devices, not just the shower system. Specifically, as Figure 6 As shown, in this embodiment, the first water outlet 12 leads to the hand-held shower 1 through the first water outlet channel 4, and the first water outlet channel 4 is provided by a hose, and the inner cavity of the hose forms the first water outlet channel 4, that is, the first water outlet 12 is connected to the hand-held shower 1 through the hose. The second water outlet 13 is directly connected to the overhead shower 2. Of course, the second water outlet 13 can also lead to the overhead shower 2 through the second water outlet channel (not shown).

[0046] The three-way water divider 3 includes a body 10, a valve seat 20 and a valve core assembly 30. The body 10 has a water inlet 11, a first water outlet 12 and a second water outlet 13. The valve seat 20 is arranged in the body 10, and the valve seat 20 has a hollow valve cavity 21 and a water inlet flow port 22, a first water outlet flow port 23 and a second water outlet flow port 24 which are respectively connected to the valve cavity 21. The water inlet flow port 22 is connected to the water inlet 11, the first water outlet flow port 23 is connected to the first water outlet 12, the second water outlet flow port 24 is connected to the second water outlet 13, and the first water outlet flow port 23 and the second water outlet flow port 24 are arranged opposite to each other. The valve core assembly 30 includes a valve stem 31, a first end (i.e., a valve body 21) of the valve stem 31, and a valve core assembly 30. Figure 4 and Figure 5 The piston member 32 is provided at the bottom end of the valve stem 31 and the second end of the valve stem 31 (i.e. Figure 4 and Figure 5 The piston member 32 is slidably matched with the inner wall of the valve cavity 21, and a through water hole 3211 is provided on the piston member 32. The valve cavity 21 is connected with the first water outlet 12 through the water hole 3211. The blocking portion 33 is opened and closed in cooperation with the second water outlet flow port 24. The water inlet flow port 22 is located between the piston member 32 and the blocking portion 33. The valve core assembly 30 slides between the first water outlet flow port 23 and the second water outlet flow port 24.

[0047] When the first water outlet channel 4 connected to the first water outlet 12 is flowing with water, the valve core assembly 30 moves toward the first water outlet flow port 23 to the first position to close the second water outlet flow port 24; when the first water outlet channel 4 connected to the first water outlet 12 is water-stopped (water-stopping here means completely stopping the flow, no water flow) or water-cutting (water-cutting here means partial water-stopping, that is, a small part of water flow is still flowing), the valve core assembly 30 moves toward the second water outlet flow port 24 to the second position to open the second water outlet flow port 24. In this way, the closing or opening of the second water outlet flow port 24 can be automatically switched by controlling the water flow or water cutoff of the first water outlet channel 4. Specifically in this embodiment, the hand-held shower head 1 can be a hand-held shower head 1 with a switch (button or knob or wrench, etc.). By operating the switch, the hand-held shower head 1 can be controlled to discharge water or completely stop discharging water or only drip water. When the hand-held shower head 1 discharges water, the first water outlet channel 4 is in a water-passing state, and when the hand-held shower head 1 completely stops discharging water, the first water outlet channel 4 is in a water-stopping state. When the hand-held shower head 1 drips water, the first water outlet channel 4 is in a water-cutting state. When the hand-held shower head 1 is switched from the water-discharging state to the water-stopping or water-cutting state by operating the switch, the three-way water divider 3 automatically opens the second water outlet flow port 24 so that the top shower head 2 discharges water. When the hand-held shower head 1 is switched from the water-stopping or water-cutting state to the water-discharging state by operating the switch, the three-way water divider 3 automatically closes the second water outlet flow port 24 so that the top shower head 2 stops discharging water. In this way, the water outlet states of the hand-held shower head 1 and the top shower head 2 can be switched and controlled by controlling the switch on the hand-held shower head 1, and the operation is very convenient.

[0048] The utility model provides a through water hole 3211 on the piston member 32, and the valve cavity 21 of the valve seat 20 is connected with the first water outlet 12 through the water hole 3211. When the first water outlet channel 4 connected to the first water outlet 12 stops water or cuts off water (that is, when the hand-held shower head 1 of the present embodiment stops discharging water or drips water), the valve core assembly 30 moves toward the second water outlet flow port 24 to the second position. During the process of opening the second water outlet flow port 24, water in the valve cavity 21 can enter the first water outlet channel 4 through the water hole 3211, thereby effectively avoiding the formation of negative pressure in the first water outlet channel 4, and the water pressure on both sides of the piston member 32 can be kept balanced, so that the valve core assembly 30 can smoothly open the second water outlet flow port 24 even under lower water pressure, thereby realizing hydraulic automatic switching, with a simple structure and reliable function.

[0049] In this embodiment, an elastic member 40 is further included, and the elastic member 40 is specifically a compression spring. The elastic member 40 is used to apply an elastic force to the valve core assembly 30 to move to the first position. When the first water outlet channel 4 connected to the first water outlet 12 passes water, the sum of the water pressure of the water in the valve cavity 21 acting on the piston member 32 and the elastic force of the elastic member 40 acting on the piston member 32 is greater than the water pressure of the water in the valve cavity 21 acting on the blocking portion 33. The valve core assembly 30 moves to the first position under the combined action of the water pressure and the elastic force, thereby closing the second water outlet flow port 24; when the first water outlet channel 4 connected to the first water outlet 12 stops or cuts off water, the water pressure on the inner and outer sides of the piston member 32 is balanced, and the water pressure of the water in the valve cavity 21 acting on the blocking portion 33 is greater than the elastic force of the elastic member 40 acting on the piston member 32, thereby enabling the valve core assembly 30 to move to the second position, thereby opening the second water outlet flow port 24. By providing the elastic member 40 to assist the valve core assembly 30 to move to the first position, when the first water outlet channel 4 connected to the first water outlet 12 is flowing, the valve core assembly 30 can close the second water outlet 24 promptly, quickly and reliably with the assistance of the elastic force, and the automatic switching function is more stable and reliable. Figure 4 and Figure 5 In this embodiment, the two ends of the elastic member 40 are respectively pressed against the inner wall of the valve seat 20 and the bottom wall 341 of the special-shaped seal 34 (described below), and the elastic member 40 indirectly provides elastic force to the piston member 32 through the special-shaped seal 34. Of course, the two ends of the elastic member 40 can also be replaced by pressing against the inner wall of the valve seat 20 and the valve stem 31 respectively, and the elastic member 40 indirectly provides elastic force to the piston member 32 through the valve stem 31, or, it can also be that the two ends of the elastic member 40 directly press against the inner wall of the valve seat 20 and the piston piece 321 (described below) of the piston member 32, etc.

[0050] In this embodiment, an annular seal 50 is provided between the blocking portion 33 and the second water outlet flow opening 24 of the valve seat 20. The blocking portion 33 is a conical structure, and the inner diameter of the blocking portion 33 gradually increases along the water outlet direction of the second water outlet flow opening 24, and the conical surface of the blocking portion 33 is sealed with the inner side of the annular seal 50. The conical surface sealing method is between the end face sealing and the radial sealing. On the one hand, the end face sealing can bring about the effect of quickly opening the first water outlet flow opening 23, and on the other hand, the radial sealing can make the blocking portion 33 smaller in design, saving the internal space occupied by the blocking portion 33.

[0051] In this embodiment, the valve core assembly 30 further includes a special-shaped seal 34 made of a soft material, and the special-shaped seal 34 includes a bottom wall 341 and a side wall 342 connected to each other. The bottom wall 341 is installed at the first end of the valve stem 31 and fits with the piston member 32, and the side wall 342 extends toward the second end of the valve stem 31. The outer diameter of the side wall 342 gradually increases in the direction toward the second end of the valve stem 31, and the wall thickness of the side wall 342 gradually decreases in the direction toward the second end of the valve stem 31. The end of the side wall 342 with a larger outer diameter fits with the inner wall of the valve cavity 21, and the bottom wall 341 is provided with a through hole 3411 corresponding to the water hole 3211. The advantages of setting the special-shaped seal 34 are as follows: on the one hand, when water is flowing through the first water outlet channel 4, the end with a larger outer diameter of the side wall 342 of the special-shaped seal 34 will be sealed against the inner wall of the valve cavity 21 under the action of the water pressure in the valve cavity 21, and the greater the water pressure, the tighter the fit, so that the water flow will not flow away a small part from the gap between the side wall of the piston member 32 and the inner wall of the valve cavity 21, and the water flow can flow more concentratedly through the through hole 3411 of the special-shaped seal 34 and the water hole 3211 of the piston member 32, and the water pressure will not be dispersed, so that the water pressure can be fully utilized to drive the piston member 32, which is more reliable; on the other hand, the end with a larger outer diameter of the side wall 342 of the special-shaped seal 34 is sealed against the inner wall of the valve cavity 21, so that the posture of the valve core assembly 30 can be balanced, and the problem of the piston member 32 being stuck or stuck after a certain tilt due to the existence of the gap between the piston member 32 and the inner wall of the valve cavity 21 can be avoided, and the movement of the piston member 32 is smoother.

[0052] In this embodiment, the piston member 32 includes a piston plate 321 and a piston ring 322 connected to the periphery of the piston plate 321. The piston ring 322 is slidably guided with the inner wall of the valve cavity 21, and the water hole 3211 is provided on the piston plate 321. Through such an arrangement, the piston member 32 has a simple structure, and can slide guided by the piston ring 322, so that the movement of the piston member 32 is smoother.

[0053] Specifically, in the embodiment, the middle part of the special-shaped seal 34 and the middle part of the piston plate 321 are respectively provided with a penetrating center hole, and the first end of the valve stem 31 passes through the two center holes and is limited by a C-shaped buckle 35, so that the special-shaped seal 34 and the piston plate 321 are fit and fixed on the first end of the valve stem 31.

[0054] In this embodiment, preferably, the valve seat 20 is a hollow cylindrical structure, the first water outlet flow port 23 and the second water outlet flow port 24 are respectively arranged at both ends of the valve seat 20, the water inlet flow port 22 is arranged on the side wall of the valve seat 20, and the valve stem 31 is centrally located in the valve seat 20. Further preferably, the first water outlet flow port 23 is coaxially arranged with the first water outlet 12, and the valve seat 20 is installed in the body 10 through the first water outlet 12, so that there is no need to open an installation port on the body 10 specifically for installing the valve seat 20, the structure is simpler, and the assembly is more convenient.

[0055] In order to make assembly easier and more convenient, the present embodiment further includes a first water outlet connector 60 . When the first water outlet connector 60 is connected to the first water outlet 12 , the valve seat 20 is limited in the body 10 .

[0056] In this embodiment, the body 10 is also fixedly connected to a socket 70 for inserting the hand-held shower head 1, so that the hand-held shower head 1 can be directly placed on the water distributor 3 without fixing another socket on the wall.

[0057] See also Figure 4 At this time, the first water outlet channel 4 connected to the first water outlet 12 is in a water-passing state. In this state, the water pressure of the water in the valve cavity 21 acting on the piston member 32 and the elastic force of the elastic member 40 acting on the piston member 32 are greater than the water pressure of the water in the valve cavity 21 acting on the blocking portion 33. The valve core assembly 30 moves to the first position under the combined action of the water pressure and the elastic force to close the second water outlet flow port 24. At this time, the water flowing in from the water inlet 11 of the body 10 flows along the Figure 4 The dotted arrow in the figure sequentially passes through the water inlet 22 of the valve seat 20, the valve cavity 21, the first water outlet 23, and the first water outlet 12, and then flows to the first water outlet channel 4, and then flows out from the hand-held shower 1. Specifically, the hand-held shower 1 flows water, and the overhead shower 2 stops water.

[0058] See also Figure 5 At this time, when the first water outlet channel 4 connected to the first water outlet 12 stops water or cuts off water, the water pressure on the inner and outer sides of the piston member 32 is balanced, and the water pressure of the water in the valve cavity 21 acting on the blocking portion 33 is greater than the elastic force of the elastic member 40 acting on the piston member 32. The valve core assembly 30 overcomes the elastic force of the elastic member 40 and moves toward the second water outlet flow port 24 to the second position to open the second water outlet flow port 24. At this time, the water flowing in from the water inlet 11 of the body 10 flows along the Figure 5 The dotted arrow in the figure sequentially passes through the water inlet 22 of the valve seat 20, the valve cavity 21, the second water outlet 24, and the second water outlet 13, and then flows to the overhead shower 2, and then flows out from the overhead shower 2. Specifically, the handheld shower 1 stops water or drips water, and the overhead shower 2 flows water.

[0059] It is understandable that in some other embodiments, the elastic member 40 may not be provided. In this case, the relationship between the water pressure on the piston member 32 and the water pressure on the blocking portion 33 is replaced as follows: when the first water outlet channel 4 connected to the first water outlet 12 is flowing with water (that is, when the hand shower 1 of this embodiment is discharging water), the water pressure on the piston member 32 is greater than the water pressure on the blocking portion 33, and the valve core assembly 30 moves to the first position under the action of the water pressure difference; when the first water outlet channel 4 connected to the first water outlet 12 stops or cuts off water, the water pressure on the inner and outer sides of the piston member 32 is balanced. At this time, the valve core assembly 30 moves to the second position under the action of the water pressure in the valve cavity 21 on the blocking portion 33. This design of the valve core assembly 30 only realizes switching under the action of water pressure, which can also achieve the purpose of the utility model, but in comparison, the automatic switching function of the above-mentioned implementation scheme of setting the elastic member 40 will be more stable and reliable.

[0060] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An automatic switching three-way water distributor, characterized in that: include: A main body having a water inlet, a first water outlet, and a second water outlet; a valve seat, arranged in the body, the valve seat having a hollow valve cavity and a water inlet flow port, a first water outlet flow port and a second water outlet flow port respectively connected to the valve cavity, the water inlet flow port being connected to the water inlet, the first water outlet flow port being connected to the first water outlet, the second water outlet flow port being connected to the second water outlet, and the first water outlet flow port and the second water outlet flow port being arranged opposite to each other; A valve core assembly, comprising a valve stem, a piston member disposed at a first end of the valve stem, and a blocking portion disposed at a second end of the valve stem, wherein the piston member is slidably matched with an inner wall of the valve cavity, a through water hole is provided on the piston member, the valve cavity is connected with the first water outlet through the water hole, the blocking portion is openably matched with the second water outlet flow port, the water inlet flow port is located between the piston member and the blocking portion, and the valve core assembly slides between the first water outlet flow port and the second water outlet flow port; When water flows through the first water outlet channel connected to the first water outlet, the valve core assembly moves toward the first water outlet flow port to the first position to close the second water outlet flow port; when water stops or cuts off the first water outlet channel connected to the first water outlet, the valve core assembly moves toward the second water outlet flow port to the second position to open the second water outlet flow port.

2. The automatic switching three-way water distributor according to claim 1, characterized in that: When water flows through the first water outlet channel connected to the first water outlet, the water pressure applied to the piston is greater than the water pressure applied to the sealing portion, and the valve core assembly moves to the first position under the action of the water pressure; when water is stopped or cut off in the first water outlet channel connected to the first water outlet, the water pressures applied to the inner and outer sides of the piston are balanced.

3. The automatic switching three-way water distributor according to claim 1, characterized in that: It also includes an elastic member, which is used to apply an elastic force to the valve core assembly to move it to the first position. When water flows through the first water outlet channel connected to the first water outlet, the sum of the water pressure of the water in the valve cavity acting on the piston member and the elastic force of the elastic member acting on the piston member is greater than the water pressure of the water in the valve cavity acting on the blocking portion, and the valve core assembly moves to the first position under the combined action of the water pressure and the elastic force; when the first water outlet channel connected to the first water outlet stops or cuts off water, the water pressure on the inner and outer sides of the piston member is balanced, and the water pressure of the water in the valve cavity acting on the blocking portion is greater than the elastic force of the elastic member acting on the piston member.

4. The automatic switching three-way water distributor according to claim 1, characterized in that: An annular seal is provided between the blocking portion and the second water outlet of the valve seat. The blocking portion is a conical structure, and the inner diameter of the blocking portion gradually increases along the water outlet direction of the second water outlet. The conical surface of the blocking portion seals with the inner side of the annular seal.

5. The automatic switching three-way water distributor according to claim 1, characterized in that: The valve core assembly also includes a special-shaped seal made of soft material, and the special-shaped seal includes a bottom wall and a side wall connected to each other, the bottom wall is installed on the first end of the valve stem and fits with the piston member, the side wall extends toward the second end of the valve stem, the outer diameter of the side wall gradually increases in the direction toward the second end of the valve stem, and the wall thickness of the side wall gradually decreases in the direction toward the second end of the valve stem, the end of the side wall with a larger outer diameter fits with the inner wall of the valve cavity, and the bottom wall is provided with a through hole corresponding to the water hole.

6. The automatic switching three-way water distributor according to claim 1, characterized in that: The piston member comprises a piston plate and a piston ring connected to the periphery of the piston plate. The piston ring is slidably guided with the inner wall of the valve cavity. The water hole is arranged on the piston plate.

7. The automatic switching three-way water distributor according to claim 1, characterized in that: The valve seat is a hollow cylindrical structure, the first water outlet and the second water outlet are respectively arranged at two ends of the valve seat, the water inlet is arranged on the side wall of the valve seat, and the valve stem is centrally located in the valve seat.

8. The automatic switching three-way water distributor according to claim 1, characterized in that: The first water outlet flow port is coaxially arranged with the first water outlet, and the valve seat is installed in the body through the first water outlet.

9. The automatic switching three-way water distributor according to claim 8, characterized in that: It also includes a first water outlet connector, which limits the valve seat in the body when the first water outlet connector is connected to the first water outlet.

10. The automatic switching three-way water distributor according to claim 1, characterized in that: The first water outlet channel leads to a hand-held shower head, and the second water outlet leads to an overhead shower head directly or through the second water outlet channel. The body is also fixedly connected to a socket for inserting and placing the hand-held shower head.

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