Dual waterway switching water outlet device

Abstract

This invention provides a dual-water-path switching outlet device, belonging to the technical field of shower equipment. It solves the problem of limited applicability of existing water-path switching structures. This dual-water-path switching outlet device includes a housing, a valve body, a switching spring, and a rod-shaped valve core. The valve body has an annular upper and lower sealing surface. The two ends of the valve core are a force-bearing end and a sealing end, respectively. When the valve core moves downward against the spring force, it abuts against the lower sealing surface to form a seal, connecting the inlet and outlet. A seal is always maintained between the outer side of the force-bearing end and the inner wall of the valve body. The valve body also has a cylindrical operating end. The valve body has a connecting hole connecting the operating end to the upper part of the force-bearing end. A button is mounted on the housing, with a cylindrical inner end that slides into the operating end. This dual-water-path switching outlet device has the advantage of wide applicability.

Description

Technical Field

[0001] This invention belongs to the field of shower equipment technology and relates to a dual water path switching water outlet device. Background Technology

[0002] Showerheads are commonly used water outlet devices. Depending on user needs, a single showerhead often offers multiple water flow modes, such as spray water, jet water, and bubble massage water. Therefore, during manufacturing, a switch to switch the water flow needs to be installed on the showerhead. Currently, the most common switches include push-button and toggle types.

[0003] For example, a water flow switching structure for a kitchen pull-out shower head has been designed and a Chinese patent has been applied for, with application number 201420362330.0 and publication number CN204018056U. This water flow switching structure includes a shower head body and a water flow switching mechanism disposed within the shower head body. The shower head body has a main water inlet channel and two branch water channels corresponding to the two water flow patterns of the kitchen pull-out shower head. The main water inlet channel is connected to the two branch water channels via two branch holes. A button seat is provided on the shower head body. The water flow switching mechanism includes a button and a switching spindle. The button is pivotally connected within the button seat and can swing back and forth. The switching spindle is driven by the button and movably disposed within the water channels of the shower head body, moving axially back and forth within the range defined between the two branch water holes to switch the water flow path.

[0004] While the aforementioned kitchen pull-out showerhead's water flow switching structure allows for switching between two water channels, the showerhead's two ends—the inlet and outlet—mean that to avoid interference, the button must be pivotally mounted on the side of the showerhead. The button moves in a circumferential swing, while the switching spindle moves axially (linearly). Since the button's pressing direction is perpendicular to the spindle's movement direction, a linkage mechanism is needed to switch the transmission direction and transmit power. Because this linkage mechanism is located inside the showerhead's side, its size, shape, and distribution are all influenced by factors such as the showerhead's volume and the distribution of the water flow channels, significantly limiting its design and assembly, and thus its applicability. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a dual-water-path switching water outlet device, which solves the problem of the limited applicability of existing water-path switching structures.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A dual-water-path switching water outlet device includes a housing with an inlet, an outlet 1, and an outlet 2; a valve body fixed within the housing; a switching spring and a rod-shaped valve core, both disposed within the valve body. The valve body has an annular upper sealing surface and a lower sealing surface. The valve core has a force-bearing end and a sealing end at its two ends, respectively. The valve core can move upward under the elastic force of the switching spring to abut against the upper sealing surface to form a seal, connecting the inlet and outlet 1. When the valve core moves downward against the elastic force of the switching spring, it can abut against the lower sealing surface to form a seal, connecting the inlet and outlet 2. The device is characterized in that a seal is always formed between the outer side of the force-bearing end and the inner wall of the valve body. The valve body also has a cylindrical operating end. The valve body has a connecting hole connecting the operating end port to the upper part of the force-bearing end. A button is inserted through the housing, the inner end of which is cylindrical and slidably inserted into the operating end.

[0008] In this dual-channel water outlet switching device, the valve core is vertically inserted into the valve body, with the force-bearing end facing upwards and the sealing end facing downwards. In the default state, the valve core moves axially towards the force-bearing end under the force of the switching spring, and the sealing end of the valve core moves to abut against the upper sealing surface to form a seal, connecting the inlet and outlet. Water flows out from the outlet by default. When switching the water outlet path is required, press the button to move it inwards, squeezing the water in the connecting hole. This forces the water to act on the force-bearing end, causing the valve core to move downwards against the force of the switching spring, changing the sealing position of the sealing end so that it abuts against the lower sealing surface to form a seal, connecting the inlet and outlet and achieving water path switching.

[0009] After the switching is completed, the button is moved outward, the force on the valve core disappears, and after the dual water circuit switching outlet device stops discharging water, the valve core can be reset upward under the elastic force of the switching spring, switching back to the initial state, so that the inlet and outlet are reconnected.

[0010] During the water circuit switching process of this dual-water-circuit switching device, the pressing force of the button is transmitted to the valve core through the water pressure in the connecting hole. Since water pressure is used for force transmission, there is no need to set up additional mechanical structures or components to realize power transmission, which simplifies the power transmission structure, occupies less space, and has no fixed setting orientation, making it suitable for more shower heads and water outlet devices, with a wide range of applications.

[0011] In the aforementioned dual-water-path switching water outlet device, the inner wall of the operating end has a conical abutment surface, and the inner end of the button is fixed with an annular, elastically deformable sealing element. The diameter of the abutment surface gradually increases from the inside to the outside. There is a water passage gap between the outer side of the sealing element and the inner wall of the operating end. When the button moves into the housing, the outer side of the sealing element abuts against the abutment surface. Initially, there is a water passage gap between the outer side of the sealing element and the inner wall of the operating end, allowing the connecting hole to communicate with the water inlet through the water passage gap, achieving water pressure balance and facilitating valve core reset. As the button moves inward, the water passage gap continuously decreases until the outer side of the sealing element abuts against the abutment surface. As the button continues to move inward, the abutment surface radially compresses the sealing element, making the two fit more tightly and improving the water pressure effect. Here, the conical abutment surface not only reduces the water passage gap when the button moves inward, ensuring the water pressure effect, but also the decreasing diameter allows for a greater force to be applied to the valve core when the button moves inward, ensuring stable pushing of the valve core. This makes the dual-water-path switching outlet device suitable for various water pressure environments.

[0012] In the aforementioned dual-water-path switching outlet device, a recessed balancing groove is provided on the abutting surface of the operating end. When the sealing element moves inward with the button until it abuts against the abutting surface, the two ends of the balancing groove in the axial direction of the operating end are respectively located on both sides of the sealing element. The balancing groove ensures the water passage gap between the sealing element and the inner wall of the operating end when the button is moved outward to reset, allowing the water pressure in the connecting hole to quickly return to balance, thereby ensuring that the valve core can stably reset under the elastic force of the switching spring.

[0013] In another scenario, in the aforementioned dual-water-path switching outlet device, the balancing groove is a strip-shaped groove. This groove is axially positioned along the operating end at the abutment surface. When the button is moved inward, the balancing groove remains connected to the upper part of the force-bearing end and the port of the operating end. By using a strip-shaped groove to consistently connect the upper part of the force-bearing end and the port of the operating end, when the button is moved inward, the flow rate pushing the water inward is greater than the flow rate of water remaining from the strip-shaped groove. Therefore, the force-bearing end can withstand the water flow and move axially, achieving the switching of the outlet water flow. After the water path is switched, the water in the connecting hole can quickly return to stability through the strip-shaped groove, canceling the force applied to the valve core, allowing the valve core to return to its initial state after water is cut off.

[0014] In the aforementioned dual-water-path switching outlet device, the sealing element is a U-shaped sealing ring, with the opening of the U-shaped sealing ring facing away from the operating end port. One end of the U-shaped sealing ring opening has two flaps, inner and outer. When the button is moved inward, the water pressure on one side of the force-bearing end increases, acting on the middle of the U-shaped sealing ring, causing its opening to open. This deformation of the sealing ring allows the outer flap to open outward more quickly and abut against the contact surface, ensuring a rapid increase in water pressure at the force-bearing end to drive the valve core. Conversely, when the button is moved outward, the water pressure at the force-bearing end decreases, and the outer flap of the U-shaped sealing ring can retract and reset under its own elastic force, increasing the water passage gap, improving pressure relief efficiency, and enhancing the efficiency and response speed of water path switching.

[0015] In another scenario, in the aforementioned dual-water-path switching device, the inner wall of the operating end has a cylindrical abutment surface. An annular, elastically deformable seal is fixed to the outer side of the inner end of the button. This seal is located outside the operating end port, and when the button moves inward, the seal tightly abuts against the abutment surface. Initially, the seal is outside the operating end, the operating end port is not blocked, and the connecting hole connects to the water inlet through the operating end port to achieve water pressure balance. When switching water paths, the button moves inward, and the seal tightly abuts against the abutment surface, blocking the water flow and compressing the water flow within the connecting hole.

[0016] In the aforementioned dual-water-path switching outlet device, the device further includes an annular connecting sleeve and a return spring disposed within the housing. A seal is formed between the outer side of the connecting sleeve and the inner wall of the housing. One end of the connecting sleeve is threaded to the outer side of the operating end. The two ends of the return spring abut against the other end of the connecting sleeve and the button, respectively. The inner end of the button passes through the inner hole of the connecting sleeve, forming a seal between them. A balance hole is provided through the side of the connecting sleeve, connecting the water inlet and the operating end port. By using the connecting sleeve, one side of the button's outer end is sealed, and the balance hole on the side connects the water inlet to the inner hole of the operating end, ensuring a good seal while providing space for water pressure balance. After the button is moved inward, the valve core moves axially towards the sealing end, connecting the inlet and outlet. At this point, the button can be reset outward under the force of the return spring, restoring the water pressure at the connecting hole to balance with the outside of the valve body, i.e., roughly balancing with the water pressure at the inlet. Because the pressure-bearing area at the valve core seal is greater than the pressure-bearing area at the force-bearing end of the valve core, the water pressure at the inlet acts on the valve core, preventing it from moving away from the lower sealing surface and resetting under the force of the switching spring. When the water flow is turned off, the water pressure at the inlet disappears, and the valve core resets. This structural design allows the user to press and release the button once, while the valve core continues to flow water in the switched state. After water use stops, the valve core automatically switches back to the default outlet, ensuring that the default water flow is maintained when the faucet is turned on, preventing confusion about the water flow pattern and simplifying user operation.

[0017] In the aforementioned dual-water-path switching outlet device, the valve body is a four-way pipe fitting, with its four ends being an outlet end one connected to outlet one, an outlet end two connected to outlet two, a closed end, and the aforementioned operating end. Outlet end one and the closed end are located on opposite sides of the valve body, as are outlet end two and the operating end. The upper and lower sealing surfaces are both located inside outlet end one. The sealing end of the valve core extends into outlet end one, and the force-bearing end of the valve core extends into the closed end. A cap is provided at the port of the closed end, sealing the port. The inner hole of the operating end connects to the closed end through the aforementioned connecting hole. Connecting the closed end and the operating end through the connecting hole allows the button to be installed at another angle, with water pressure applying force to the force-bearing end of the valve core within the closed end. This achieves stable water path switching and allows for convenient button installation in a suitable position, making this outlet device suitable for shower heads of different shapes and sizes, thus having a wide range of applications.

[0018] In the aforementioned dual-water-path switching outlet device, the device further includes a cylindrical inner core disposed within the housing. One end of the inner core is closed, and the other end is fitted onto the outside of the second outlet of the valve body. One side of the inner core has an outlet head communicating with the second outlet. A wedge-shaped block is disposed between the other side of the inner core and the housing, with both sides of the wedge block abutting against the inner core and the housing, respectively. The wedge-shaped block ensures the stability of the inner core and also guarantees a stable connection between the outlet head and the second outlet.

[0019] Compared with existing technologies, this dual-water-path switching outlet device has the following advantages:

[0020] 1. The button uses water pressure through the connecting hole to act on the valve core, thereby switching the water circuit after the valve core moves. This not only reduces force loss, but also reduces the pressing force required based on Pascal's principle, making the operation of switching water circuits easier and more convenient for users. At the same time, it also reduces the mechanical linkage structure, making the structure simpler, occupying less space, and improving the applicability.

[0021] 2. The conical abutment surface, U-shaped sealing ring, and balance groove design enable the valve core to move quickly when the button is moved inward, and the button can quickly return to its original position when the pressing pressure is removed. Furthermore, when the water outlet is closed, the valve core can quickly reset under the elastic force of the switching spring, making the water outlet switching action of this dual water outlet switching device faster.

[0022] 3. After switching water paths by pressing the button on this dual-water-path switching device, simply turning off the water will reset the water path, avoiding confusion when multiple people use the device and making it more convenient for users. Attached Figure Description

[0023] Figure 1 This is a cross-sectional structural schematic diagram of Embodiment 1 of the dual-water-path switching water outlet device.

[0024] Figure 2 This is a cross-sectional structural schematic diagram from another perspective of Embodiment 1 of the dual-water-path switching water outlet device.

[0025] Figure 3 This is a schematic diagram of the structure of the dual-water-path switching water outlet device after removing the shell, according to Embodiment 1.

[0026] Figure 4 This is a cross-sectional structural diagram of the default water outlet state in Embodiment 1 of the dual water path switching water outlet device.

[0027] Figure 5 This is a cross-sectional structural diagram of the dual-water-path switching outlet device after switching the outlet water path in Embodiment 1.

[0028] Figure 6This is a cross-sectional structural diagram of the operating end of the dual-water-path switching outlet device in Embodiment 2.

[0029] In the diagram, 1. Housing; 1a. Inlet; 1b. Outlet 1; 1c. Outlet 2; 2. Valve body; 2a. Operating end; 2b. Abutting surface; 2c. Balance groove; 2d. Lower sealing surface; 2e. Upper sealing surface; 2f. Inlet hole; 2g. Outlet 1; 2h. Outlet 2; 2i. Closed end; 2j. Connecting hole; 2k. Hydraulic chamber; 3. Switching spring; 4. Valve core; 4a. Force-bearing end; 4b. Sealing end; 5. Button; 6. Seal; 7. Return spring; 8. Connecting sleeve; 8a. Balance hole; 9. Cover; 10. Inner core; 10a. Outlet head; 11. Wedge block. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0031] For ease of description, the structure will be explained below with reference to the orientation shown in the attached figures.

[0032] Example 1

[0033] like Figure 1 and Figure 2 As shown, this dual-water-path switching water outlet device includes a housing 1 with an inlet 1a, an outlet 1b, and an outlet 1c, a button 5, and a cylindrical inner core 10, a valve body 2, and a connecting sleeve 8, all housed within the housing 1. The housing 1 is cylindrical, with its left end open as the inlet 1a. The connecting sleeve 8 is annular and coaxially positioned on the inner side of the right end of the housing 1. The inner end of the button 5 passes through the inner hole of the connecting sleeve 8 from right to left and forms a seal with the connecting sleeve 8 through an O-ring. A return spring 7 is provided between the outer end of the connecting sleeve 8 and the outer end of the button 5, with the return spring 7 sleeved on the outside of the button 5 and its two ends abutting against the outer ends of the connecting sleeve 8 and the button 5, respectively. Both outlets 1b and 1c are located on the lower side of the housing 1.

[0034] Specifically, the valve body 2 is roughly a four-way pipe fitting, with each of its four ends being cylindrical. These are: outlet end 2g (facing downwards and connected to outlet 1b), outlet end 2h (facing left), closed end 2i (facing upwards), and operating end 2a (facing right). Outlet end 2g, outlet end 2h, and closed end 2i are all connected to the center of the valve body 2 and are interconnected. The closed end 2i is secured with a cap 9 using an interference fit, which seals the port of the closed end 2i. The operating end 2a is not connected to the center of the valve body 2 but is connected to the inside of the closed end 2i port through a connecting hole 2j that is inclined relative to the left-right direction. The upper surface shape of the closed end 2i matches the inner wall shape of the housing 1 to achieve a close fit. A cylindrical locking connector is connected to the water outlet end of the lower side of the valve body 2 via a 2g internal thread. The outer end of the locking connector extends through the lower side of the housing 1, and when the locking connector is screwed in along the thread, it can press tightly against the lower side of the housing 1 to achieve relative fixation between the valve body 2 and the housing 1. The outer end of the locking connector and the lower side of the housing 1 are sealed by a special-shaped sealing ring. An aerator is connected to the lower end of the locking connector.

[0035] like Figure 3 As shown, the axis of the inner core 10 is roughly arranged in the left-right direction, and there is a water passage gap between its outer side and the inner wall of the housing 1 for water to flow through. A plug is provided in the left end of the inner core 10 to seal the left port of the inner core 10. The left end of the plug extends out of the inner core 10, and the outer side of the left end of the plug has an outwardly protruding annular limiting edge. The outer side of the limiting edge fits against the inner wall of the housing 1. A water passage hole is opened through the limiting edge in the left-right direction to connect the water inlet 1a and the aforementioned water passage gap. The right end of the inner core 10 is sleeved on the outer side of the outlet end 2h of the valve body 2, and the two are sealed by an O-ring. A water outlet head 10a made of rubber material is fixed on the lower side of the inner core 10. The inner hole of the water outlet head 10a connects the inner cavity of the inner core 10 and the outlet 1c. The upper side of the inner core 10 has a protruding, elongated rib. A wedge block 11 is provided between the upper side of the inner core 10 and the shell 1. The lower side of the wedge block 11 has a recessed, elongated groove, and the rib is embedded in the groove.

[0036] The inner wall of the outlet end 2g of valve body 2 has a lower sealing surface 2d and an upper sealing surface 2e, both of which are circular. The lower sealing surface 2d and the upper sealing surface 2e are arranged coaxially and spaced apart, with the lower sealing surface 2d located below the upper sealing surface 2e. The inner hole of the lower sealing surface 2d is always in communication with the outlet 1b, and the upper sealing surface 2e is located at the connection between the inner holes of the outlet end 2g and the outlet end 2h, and the inner hole of the upper sealing surface 2e is always in communication with the outlet 2c. Several inlet holes 2f, which are connected to the inlet 1a, are opened through the side of valve body 2 between the lower sealing surface 2d and the upper sealing surface 2e.

[0037] The valve body 2 contains a rod-shaped valve core 4 and a switching spring 3. The valve core 4 is vertically oriented, with its upper end being a force-bearing end 4a that extends into the closed end 2i. A circular sealing ring is fitted around the outer side of the force-bearing end 4a, and the lower end of the cover 9 is pressed tightly against this sealing ring, forming a seal between the force-bearing end 4a and the inner wall of the closed end 2i. The gap between the end of the force-bearing end 4a and the cover 9 communicates with the inner hole of the operating end 2a through a connecting hole 2j, forming a hydraulic chamber 2k. This hydraulic chamber 2k has only one opening, which is the port of the operating end 2a. The lower end of the valve core 4 is a sealing end 4b, with a circular sealing ring fixed to its outer side. The sealing end 4b passes downward through the inner hole of the upper sealing surface 2e, positioning the sealing ring between the upper sealing surface 2e and the lower sealing surface 2d. In this embodiment, the upper end of the locking connector has the aforementioned lower sealing surface 2d, the upper end of the switching spring 3 abuts against the sealing end 4b, and the lower end abuts against the locking connector.

[0038] The inner wall of the operating end 2a has a conical abutment surface 2b, the diameter of which gradually increases from left to right. The button 5 includes a rod-shaped pressing rod and a pressing cover threaded to the outer side of the pressing rod's outer end. A return spring 7 is sleeved on the outer side of the pressing rod, with its right end abutting against the pressing cover. The outer diameter of the left end of the pressing rod is smaller than the outer diameter of the right end, and a ring-shaped sealing element 6 is fixed to the outer side of the left end of the pressing rod. When the pressing rod moves to the right under the elastic force of the return spring 7, both the left end of the pressing rod and the sealing element 6 are located inside the operating end 2a, and there is a water-passing gap between the outer side of the sealing element 6 and the inner wall of the operating end 2a. When the pressing rod is subjected to external force and moves to the left against the elastic force of the return spring 7, because the abutment surface 2b is conical, the water-passing gap continuously decreases until the outer side of the sealing element 6 abuts against the abutment surface 2b. Because the sealing element 6 can be made of rubber, after it abuts against the abutting surface 2b, the pressing rod can continue to move to the left, squeezing the sealing element 6 to deform it. In this embodiment, the sealing element 6 is a U-shaped sealing ring, and the opening of the U-shaped sealing ring faces away from the port of the operating end 2a; two concave hemispherical balance grooves 2c are provided on the abutting surface 2b of the operating end 2a, and the two balance grooves 2c are located on the opposite side walls inside the operating end 2a. When the sealing element 6 moves inward with the button 5 to abut against the abutting surface 2b, the two ends of the balance grooves 2c in the axial direction of the operating end 2a are respectively located on both sides of the sealing element 6, that is, the balance grooves 2c can connect the inside and outside of the sealing element 6; the left end of the connecting sleeve 8 is sleeved on the outside of the operating end 2a, and several balance holes 8a are provided through the left side wall of the connecting sleeve 8 at the sealing position with the pressing rod, which can connect the water inlet 1a and the inner hole of the operating end 2a.

[0039] like Figure 4As shown, in the default state, i.e., when no water is flowing out, button 5 moves to the right under the force of the reset spring 7, and the inner end of the pressing rod and the seal 6 move to the right, forming a water passage gap at the outer side of the seal 6 and the balance groove 2c, connecting the hydraulic chamber 2k and the inside of the housing 1. At this time, valve core 4 moves upward under the force of the switching spring 3, and the sealing ring of its sealing end 4b abuts against the upper sealing surface 2e, blocking the gap between the upper sealing surface 2e and the water inlet 1a. The remaining water in the housing 1 flows downward from the water inlet 1a through the water passage hole, the water inlet hole 2f, and the inner hole of the lower sealing surface 2d, out of the water outlet 1b.

[0040] like Figure 5 As shown, when switching the water flow path in the water outlet state, press button 5 to the left to move it into the housing 1. The water passage gap between the seal 6 on the outer side of the inner end of button 5 and the inner wall of the operating end 2a gradually narrows until the outer side of the seal 6 abuts against the contact surface 2b to block the water flow. As button 5 continues to move to the left, since a seal is always formed between the outer side of the force-bearing end 4a and the inner wall of the valve body 2, the water flow pushed in the hydraulic chamber 2k during the inward movement of button 5 acts on the end of the force-bearing end 4a, causing the valve core 4 to move downward against the spring force of the switching spring 3 and the water pressure in the housing 1. The sealing ring on the sealing end 4b moves down to abut against the lower sealing surface 2d, blocking the inner hole of the lower sealing surface 2d and the water inlet 1a. Then, after the water flows into the water inlet 2f, it flows out from the water outlet 1c after passing through the inner hole of the upper sealing surface 2e, the inner hole of the second water outlet 2h, the inner cavity of the inner core 10, and the water outlet head 10a, thus realizing the switching of the water path.

[0041] During this water circuit switching process, after pressing button 5 to its full position, you can release your finger. Button 5 will then move to its right and reset under the force of the return spring 7. Because the U-shaped sealing ring is a one-way sealing ring, water in the housing 1 will flow between the U-shaped sealing ring and the operating end 2a to replenish water into the hydraulic chamber 2k. The water pressure in the hydraulic chamber 2k will quickly reach equilibrium with the water pressure in the housing 1. However, because the water pressure entering the valve body 2 through the inlet hole 2f acts on the upper side of the sealing end 4b, it tightly presses the sealing ring of the sealing end 4b against the lower sealing surface 2d, preventing the valve core 4 from moving upwards and resetting after button 5 returns to its original position. When water usage is finished and the faucet is turned off, water no longer enters through the inlet hole 2f. After the valve core 4 loses water pressure, it resets upwards under the force of the switching spring 3, automatically switching back to the default water output mode. This adapts to the most frequently used water output mode, avoiding situations where the water circuit is not switched back after switching or when someone else uses the water circuit without switching it back, thus facilitating user operation.

[0042] Example 2

[0043] like Figure 6As shown, the technical solution of this embodiment is largely the same as that of Embodiment 1, except that: the balance groove 2c is a strip-shaped groove, which is opened along the axial direction of the operating end 2a at the abutment surface 2b, and the balance groove 2c is always connected to both sides of the sealing member 6. Here, the width and depth of the balance groove 2c need to be tested and determined to ensure that when the button 5 moves inward, the amount of water compression in a short time is greater than the flow rate discharged from the strip-shaped groove, so as to ensure that while the water pressure pushes the valve rod to move, it can also achieve faster pressure relief between the end of the force-bearing end 4a and the cover 9.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A dual-channel switching water outlet device, comprising a housing (1) having an inlet (1a), an outlet one (1b), and an outlet two (1c), a valve body (2) fixed within the housing (1), a switching spring (3) disposed within the valve body (2), and a rod-shaped valve core (4), wherein the valve body (2) has an annular upper sealing surface (2e) and a lower sealing surface (2d), and the two ends of the valve core (4) are a force-bearing end (4a) and a sealing end (4b), respectively; the valve core (4) can move upward under the elastic force of the switching spring (3) to abut against the upper sealing surface (2e) to form a seal, thereby connecting the inlet (1a) and the outlet one (1b); when the valve core (4) moves downward against the elastic force of the switching spring (3), it can abut against the lower sealing surface (2d) to form a seal, thereby connecting the inlet (1a) and the outlet two (1c), characterized in that, A seal is always formed between the outer side of the force-receiving end (4a) and the inner wall of the valve body (2). The valve body (2) also has a cylindrical operating end (2a). The valve body (2) has a connecting hole (2j) that connects the port of the operating end (2a) to the upper part of the force-receiving end (4a). A button (5) is provided on the housing (1). The inner end of the button (5) is cylindrical, and the inner end of the button (5) is slidably inserted into the operating end (2a).

2. The dual-water-path switching outlet device according to claim 1, characterized in that, The inner wall of the operating end (2a) has a conical abutment surface (2b), and the inner end of the button (5) is fixed with an annular elastically deformable sealing element (6). The diameter of the abutment surface (2b) gradually increases from the inside to the outside. There is a water passage gap between the outer side of the sealing element (6) and the inner wall of the operating end (2a). When the button (5) moves into the housing (1), the outer side of the sealing element (6) can abut against the abutment surface (2b).

3. The dual-water-path switching outlet device according to claim 2, characterized in that, The operating end (2a) has a recessed balance groove (2c) on its abutting surface (2b). When the sealing element (6) moves inward with the button (5) to abut against the abutting surface (2b), the two ends of the balance groove (2c) in the axial direction of the operating end (2a) are respectively located on both sides of the sealing element (6).

4. The dual-water-path switching outlet device according to claim 3, characterized in that, The balancing groove (2c) is a strip groove. The balancing groove (2c) is opened along the axial direction of the operating end (2a) at the abutment surface (2b). The balancing groove (2c) is always connected to the upper part of the force-bearing end (4a) and the port of the operating end (2a).

5. A dual-water-path switching outlet device according to claim 2, 3, or 4, characterized in that, The sealing element (6) is a U-shaped sealing ring, and the opening of the U-shaped sealing ring faces away from the operating end (2a) port.

6. A dual-water-path switching outlet device according to claim 1, 2, 3, or 4, characterized in that, The dual-water-path switching water outlet device also includes an annular connecting sleeve (8) and a reset spring (7) disposed inside the housing (1). The outer side of the connecting sleeve (8) forms a seal with the inner wall of the housing (1). One end of the connecting sleeve (8) is threaded to the outer side of the operating end (2a). The two ends of the reset spring (7) abut against the other end of the connecting sleeve (8) and the button (5) respectively. The inner end of the button (5) passes through the inner hole of the connecting sleeve (8) and forms a seal between the two. The side of the connecting sleeve (8) is provided with a balance hole (8a) that can connect the water inlet (1a) and the port of the operating end (2a).

7. A dual-water-path switching outlet device according to claim 1, 2, 3, or 4, characterized in that, The valve body (2) is a four-way pipe fitting, with its four ends being an outlet end one (2g) connected to outlet one (1b), an outlet end two (2h) connected to outlet two (1c), a closed end (2i), and the aforementioned operating end (2a). The outlet end one (2g) and the closed end (2i) are located on opposite sides of the valve body (2), and the outlet end two (2h) and the operating end (2a) are located on opposite sides of the valve body (2). The lower sealing surface (2... d) and the upper sealing surface (2e) are both located inside the water outlet end (2g). The sealing end (4b) of the valve core (4) extends into the water outlet end (2g). The force-bearing end (4a) of the valve core (4) extends into the closed end (2i). A cover (9) is provided at the port of the closed end (2i) and the cover (9) blocks the port of the closed end (2i). The inner hole of the operating end (2a) is connected to the closed end (2i) through the connecting hole (2j).

8. A dual-water-path switching outlet device according to claim 7, characterized in that, The dual-water-path switching outlet device also includes a cylindrical inner core (10) disposed inside the housing (1). One end of the inner core (10) is closed, and the other end is sleeved on the outside of the outlet end two (2h) of the valve body (2). One side of the inner core (10) has an outlet head (10a) that communicates with the outlet two (1c). A wedge block (11) is disposed between the other side of the inner core (10) and the housing (1), and the two sides of the wedge block (11) abut against the inner core (10) and the housing (1) respectively.

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