Dual waterway switching valve and dual waterway shower pipe

Abstract

The utility model belongs to the bathroom technical field, concretely is a kind of double waterway switching valve and double waterway shower pipe. Including main control body, pull rod and pressing mechanism, the slide hole of one lateral setting is formed in main control body, main waterway is formed in one side of slide hole in main control body, the first branch waterway and second branch waterway that are independent of each other are formed in the other side of slide hole;Pull rod is set in slide hole and is slid laterally, the front end of pull rod is equipped with first sealing ring;Pressing mechanism is located in the outside of main control body and is connected with pull rod, and pressing mechanism drives pull rod to move in slide hole, so that first sealing ring is in first position or second position;When first sealing ring is in first position, first branch waterway is communicated with main waterway;When first sealing ring is in second position, second branch waterway is communicated with main waterway.The application has the advantages of compact structure, convenient installation, adaptation round pipe body and stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of bathroom technology, specifically a dual water circuit switching valve and a dual water circuit shower pipe. Background Technology

[0002] Currently, most shower head switches on the market use a push-button design. However, these switches generally have a significant limitation: their structural design is primarily adapted to the shower body and cannot be directly integrated into the shower hose. Since shower hoses typically use a circular cross-section (especially 25mm diameter), which is economical and versatile, it is difficult to implement the water distribution function of a traditional push-button switch on a circular hose. A few solutions use square tubing to provide installation surface and space, but square tubing is expensive, has poor versatility, and low market acceptance. If forced to use a circular hose, the pipe diameter needs to be increased to accommodate the internal components, which not only sacrifices economy but also damages the product's aesthetics and overall harmony.

[0003] Existing technologies that enable press-to-dispense water onto circular shower pipes typically require cutting large notches in the pipe wall to install the water-passing components and the dispensing valve core, followed by the addition of a decorative cover for concealment and fixation. This method results in a large number of parts, cumbersome assembly processes, high requirements for positioning accuracy, and insufficient robustness, making it prone to loosening, leakage, or damage over long-term use. More importantly, current press-to-dispense mechanisms for circular pipes (commonly rocker-type press mechanisms) suffer from severe failure under low water pressure conditions. When the water supply pressure is insufficient, the button cannot effectively maintain the switching state after being pressed, and will automatically reset due to insufficient internal water pressure or spring force. This results in repeated operation by the user failing to successfully switch the water outlet mode, greatly affecting the user experience and product reliability.

[0004] Therefore, there is an urgent need in the industry to design a push-button water diversion valve that can be adapted to round shower pipes, has a simple and reliable structure, and can work stably across the entire water pressure range, in order to break through the bottleneck of existing technology. Utility Model Content

[0005] To address the problems mentioned above, this utility model provides a dual-water-path switching valve and a dual-water-path shower pipe, which have the advantages of compact structure, convenient installation, compatibility with circular pipes, and stable and reliable operation.

[0006] The first aspect of this utility model is to provide a dual-water-path switching valve, comprising:

[0007] The main control body has a horizontally arranged sliding hole, one end of which penetrates the side wall of the main control body; a main water channel is formed on one side of the sliding hole in the main control body, and a first branch water channel and a second branch water channel are formed on the other side of the sliding hole, and the main water channel, the first branch water channel, and the second branch water channel are all connected to the sliding hole.

[0008] The pull rod is slidably installed in the sliding hole, and the front end of the pull rod is fitted with a first sealing ring;

[0009] The pressing mechanism is located outside the main control body and connected to the lever. The pressing mechanism drives the lever to move in the sliding hole so that the first sealing ring is in the first position or the second position. When the first sealing ring is in the first position, the first branch water channel is connected to the main water channel. When the first sealing ring is in the second position, the second branch water channel is connected to the main water channel.

[0010] Furthermore, it also includes a main control spring, with a first spring positioning groove on the bottom wall of the sliding hole, and a second spring positioning groove on one end of the pull rod opposite to the first spring positioning groove; one end of the main control spring is located in the first spring positioning groove, and the other end is located in the second spring positioning groove.

[0011] Furthermore, the main waterway is connected to the sliding hole through the inlet hole, and the first branch waterway and the second branch waterway are connected to the sliding hole through the first outlet hole and the second outlet hole, respectively. The inlet hole is located between the first outlet hole and the second outlet hole; the first position is located between the second outlet hole and the inlet hole, and the second position is located between the first outlet hole and the inlet hole.

[0012] Operate the pressing mechanism to move the first sealing ring to the first position to block the second water channel; or move the first sealing ring to the second position to block the first water channel.

[0013] Furthermore, the pull rod includes a first sealing groove and a second sealing groove spaced apart, a first sealing ring is disposed in the first sealing groove, a second sealing ring is disposed in the second sealing groove, and the outer diameter of the pull rod between the first sealing groove and the second sealing groove is smaller than the inner diameter of the sliding hole.

[0014] A semi-circular ball head is provided at the end of the lever away from the first sealing groove, and the semi-circular ball head is in contact with the pressing mechanism.

[0015] Furthermore, a pressure ring is provided between the inner wall of the sliding hole and the pull rod. One end of the pressure ring extends laterally to the outer side of the sliding hole. A first pressure ring sealing surface and a second pressure ring sealing surface are provided at intervals on the outer circumference of the pressure ring. A sealing ring is provided on both the first pressure ring sealing surface and the second pressure ring sealing surface. A flow channel is formed between the first pressure ring sealing surface and the second pressure ring sealing surface. The sliding hole is connected to the second branch water channel through the flow channel.

[0016] The second sealing ring is sealed to the inner wall of the pressure ring, and the second sealing ring is located on the outside of the second water outlet.

[0017] Furthermore, the pressing mechanism includes switching lever A, switching lever B, and a toothed sleeve, wherein:

[0018] One of the switching levers A and B is provided with a guide post, and the other is provided with a guide hole. They are connected as one unit through the cooperation of the guide post and the guide hole.

[0019] The side of the switching lever A opposite to the switching lever B is provided with a first inclined surface and a second inclined surface that are inclined in the same direction and are arranged alternately. The switching lever B is provided with a sawtooth structure with a third inclined surface. The inner side of the tooth sleeve is provided with a limiting inclined surface and a guide inclined surface that cooperate with the first inclined surface and the second inclined surface.

[0020] The inner wall of the gear sleeve is provided with a guide groove extending along the length direction, and both switching rod A and switching rod B are provided with guide platforms that cooperate with the guide groove.

[0021] Furthermore, the main control unit is equipped with a connection point at one end of the main waterway for connecting to external components.

[0022] The second aspect of this utility model is to provide a dual-water-path shower pipe, including a straight pipe, a water distribution body and at least one water outlet body connected to the water distribution body are provided inside the straight pipe, and a dual-water-path switching valve of any one of the above is connected to the end of the water distribution body away from the water outlet body; a back spray assembly is provided on each water outlet body.

[0023] Both the water distribution body and the water outlet body are equipped with a first flow path and a second flow path, which are respectively connected to the first branch water path and the second branch water path. The second flow path on the water outlet body is connected to the back spray assembly.

[0024] Furthermore, the back spray assembly includes a nozzle housing and a water outlet nozzle. The nozzle housing is detachably mounted on the side wall of the water outlet body, and the water outlet nozzle is detachably connected to the nozzle housing.

[0025] Furthermore, there are multiple water outlets, and the end of the outermost water outlet is provided with a plug for blocking the second flow path. The plug includes a blocking part and a water flow passage located on the outer periphery of the blockage, and the water flow passage is connected to the first flow path.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] (1) The dual water circuit switching valve of this application includes a main control body, a lever and a pressing mechanism. The main control body has a horizontally arranged sliding hole. The upper side of the sliding hole is provided with an independent first water circuit and a second water circuit. The lower side of the sliding hole is provided with a main water circuit. The lever is horizontally slidably arranged in the sliding hole. The front end of the lever is fitted with a first sealing ring. The lever is driven to move by the pressing mechanism so that the main water circuit can be selectively connected to the first water circuit or the second water circuit, realizing the rapid switching of water circuits. The linear movement of the lever combined with the dynamic sealing method of the first sealing ring simplifies the force transmission path. At the same time, the design that the lever movement direction is perpendicular to the main water circuit direction eliminates the risk of jamming during the switching process and solves the reset failure problem under low water pressure conditions.

[0028] (2) The dual-water-path shower pipe of this application includes a straight pipe, in which a dual-water-path switching valve, a water distribution body, and a water outlet body are sequentially connected. A back spray assembly is installed on the water outlet body. The back spray assembly and the pressing mechanism are both installed on the side wall of the straight pipe. The connection between the water distribution body and the dual-water-path switching valve divides the main water path into two independent branches. The water flow in the first branch flows sequentially through the first flow path on the water distribution body and the first flow path on the water outlet body along the axial direction of the straight pipe. The water flow in the second branch supplies water to the corresponding back spray assembly sequentially through the second flow path on the water distribution body and the second flow path on the water outlet body. The modular assembly of the water distribution body and the water outlet body allows the dual-water-path structure to be completely built into a standard circular pipe without cutting the pipe wall or changing the cross-sectional shape. The back spray assembly is directly integrated into the side wall of the water outlet body, and the independent water supply through the second flow path avoids pressure interference with the main water path. When the dual water circuit switching valve is pressed, the lever drives the first and second sealing rings to switch positions, so that the main water circuit selectively connects to the first or second branch water circuit, and the water flow is delivered to other water outlet components or back spray components through the corresponding flow path. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is an exploded view of a dual-water-path switching valve provided in an embodiment of this application;

[0031] Figure 2 A cross-sectional schematic diagram of a dual-water-path switching valve provided in an embodiment of this application;

[0032] Figure 3 This is a structural diagram of the main control body of a dual-water-path switching valve provided in an embodiment of this application;

[0033] Figure 4 A diagram showing the lever structure of a dual-water-path switching valve provided in an embodiment of this application;

[0034] Figure 5 This is a diagram of the pressure ring structure of a dual-water-path switching valve provided in an embodiment of this application;

[0035] Figure 6 This is a structural diagram of the switching rod A of a dual-waterway switching valve provided in an embodiment of this application;

[0036] Figure 7 This is a structural diagram of the switching rod B of a dual-waterway switching valve provided in an embodiment of this application;

[0037] Figure 8 This is a diagram of the toothed sleeve structure of a dual-water-path switching valve provided in an embodiment of this application;

[0038] Figure 9 This is an exploded structural diagram of a dual-water-path shower pipe provided in an embodiment of this application;

[0039] Figure 10 A cross-sectional schematic diagram of a dual-waterway shower pipe provided in an embodiment of this application;

[0040] Figure 11 for Figure 10 Enlarged view of part A in the image;

[0041] Figure 12 for Figure 10 Enlarged view of part B in the image;

[0042] Figure 13 for Figure 10 Enlarged view of section C in the image;

[0043] Figure 14 for Figure 10 Enlarged view of part D in the image;

[0044] Figure 15 This is a structural diagram of the water distribution body A of a dual-water-path shower pipe provided in an embodiment of this application;

[0045] Figure 16 This is a structural diagram of the water distribution body B of a dual-water-path shower pipe provided in an embodiment of this application;

[0046] Figure 17 A structural diagram of the water outlet of a dual-water-path shower pipe provided in an embodiment of this application;

[0047] Figure 18 This is a diagram of the plug structure of a dual-water-path shower pipe provided in an embodiment of this application;

[0048] Wherein: 1-Main control body, 11-Sliding hole, 111-First spring positioning groove, 112-Water inlet, 113-First water outlet, 114-Second water outlet, 12-Main water channel, 13-First branch water channel, 14-Second branch water channel, 15-Connecting position, 2-Pull rod, 21-First sealing ring, 22-Main control spring, 23-Second spring positioning groove, 24-First sealing groove, 25-Second sealing groove, 26-Semi-circular ball head, 27-Second sealing ring, 3-Pressing mechanism, 31-Switching rod A, 311-Guide post, 312-First inclined surface, 313-Second inclined surface, 314-Guide platform, 32-Switching rod B 321-Guide hole, 322-Serrated structure, 33-Gear sleeve, 331-Limiting inclined surface, 332-Guide inclined surface, 333-Guide groove, 34-Granty cap, 4-Pressure ring, 41-First pressure ring sealing surface, 42-Second pressure ring sealing surface, 43-Flow channel, 5-Straight pipe, 6-Water distribution body, 61-Water distribution body A, 611-Positioning boss, 62-Water distribution body B, 621-First connecting structure, 7-Water outlet body, 71-First flow path, 72-Second flow path, 73-Second connecting structure, 8-Back spray assembly, 81-Water nozzle shell, 82-Water outlet nozzle, 9-Plug, 91-Sealing part, 92-Flow passage. Detailed Implementation

[0049] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0050] The following is in conjunction with the appendix Figure 1 To be continued Figure 18 The present invention will be described in detail with specific embodiments.

[0051] like Figure 1-18 As shown, this utility model provides a dual-water-path switching valve, including a main control body 1, a lever 2, and a pressing mechanism 3. The main control body 1 is preferably a circular tube adapted to a circular shower pipe, allowing it to be sealed and inserted into the circular shower pipe. The main control body 1 has a horizontally arranged sliding hole 11, meaning the axis of the sliding hole 11 is perpendicular to the axis of the main control body 1. One end of the sliding hole 11 penetrates the side wall of the main control body to form a mounting hole. The main control body 1 is located on one side of the sliding hole 11 (as shown in the attached diagram). Figure 2 A main water passage 12 is formed on the lower side of the sliding hole 11 shown, located on the other side of the sliding hole 11 (as shown in the attached figure). Figure 2The upper side of the sliding hole 11 (as shown) forms an independent first branch water channel 13 and a second branch water channel 14. The main water channel 12, the first branch water channel 13, and the second branch water channel 14 are all connected to the sliding hole 11, making the sliding hole 11 a water passage. The pull rod 2 is laterally slidably disposed in the sliding hole 11. The front end of the pull rod 2 is fitted with a first sealing ring 21. The first sealing ring 21 is an elastic sealing ring, which forms a dynamic seal with the inner wall of the sliding hole 11 through compression deformation. The front end of the pull rod 2 mentioned above refers to the end of the pull rod 2 that extends into the sliding hole 11. The pressing mechanism 3 is located outside the main control body 1 and is connected to the pull rod 2. By applying pressure to the pressing mechanism 3, the pull rod 2 can be driven to move laterally in the sliding hole 11, so that the first sealing ring 21 is in a first position or a second position. When the first sealing ring 21 is in the first position, the first branch water channel 13 is connected to the main water channel 12. When the first sealing ring 21 is in the second position, the second branch water channel 14 is connected to the main water channel 12. It should be noted that in the attached diagram, the yellow arrows indicate the water flow in the main waterway, the blue arrows indicate the water flow in the second waterway, and the red arrows indicate the water flow in the first waterway.

[0052] Specifically, the main water passage 12 is connected to the middle of the sliding hole 11 through the water inlet, and the two branch water passages are connected to both ends of the sliding hole 11 through the water outlet. The pressing mechanism 3 enables the main water passage 12 to selectively connect with the first branch water passage 13 or the second branch water passage 14, realizing rapid switching of the water passage. Furthermore, the linear movement of the lever 2 combined with the dynamic sealing method of the first sealing ring 21 simplifies the force transmission path. At the same time, the design that the moving direction of the lever 2 is perpendicular to the direction of the main water passage 12 eliminates the risk of jamming during the switching process and solves the problem of reset failure under low water pressure conditions.

[0053] The dual-water-path switching valve of this application has a simple structure, is easy to install, and can be applied to circular shower pipes.

[0054] Furthermore, it also includes a main control spring 22. A first spring positioning groove 111 is provided on the bottom wall of the sliding hole 11, and a second spring positioning groove 23 is provided on one end of the pull rod 2 opposite to the first spring positioning groove 111. One end of the main control spring 22 is located in the first spring positioning groove 111, and the other end is located in the second spring positioning groove 23. The first spring positioning groove 111 and the second spring positioning groove 23 can be implemented by using annular grooves or cylindrical grooves to fix the main control spring 22. When the main control spring 22 is compressed or automatically popped out, it can generate force along the direction of axial force to ensure that no displacement occurs.

[0055] Specifically, the main control spring 22 can be a helical spring made of wound metal wire. Both ends of the main control spring 22 are respectively embedded in the first spring positioning groove 111 and the second spring positioning groove 23, forming an axial fixed connection. When the pressing mechanism 3 drives the lever 2 to slide laterally, the main control spring 22 is compressed or returns to its initial state. The restoring force generated is transmitted along the axis of the lever 2 through the positioning grooves at both ends. Furthermore, under low water pressure conditions, the restoring force of the main control spring 22 can overcome water pressure fluctuations, keeping the lever 2 stably in the first or second position, avoiding jamming or reset failure due to spring misalignment. This application ensures that the main control spring 22 always applies a linear restoring force along the axis of the lever 2 through the double positioning groove structure, thereby achieving stable positioning of the lever under both low and high water pressure conditions.

[0056] Furthermore, the main water passage 12 is connected to the sliding hole 11 through the inlet hole 112, and the first branch water passage 13 and the second branch water passage 14 are connected to the sliding hole 11 through the first outlet hole 113 and the second outlet hole 114, respectively. The inlet hole 112 is located between the first outlet hole 113 and the second outlet hole 114. The first position is located between the second outlet hole 114 and the inlet hole 112, and the second position is located between the first outlet hole 113 and the inlet hole 112. The first position and the second position refer to the two extreme stroke points of the first sealing ring 21 in the sliding hole 11. Specifically, they can be achieved by controlling the driving stroke of the pressing mechanism 3, which corresponds to the opening and closing states of the first branch water passage 13 and the second branch water passage 14, respectively. Applying force to the pressing mechanism 3 causes the first sealing ring 21 to move to the first position to block the second branch water passage 14, or causes the first sealing ring 21 to move to the second position to block the first branch water passage 13.

[0057] Specifically, when the pressing mechanism 3 drives the first sealing ring 21 to move towards the second water outlet 114 to the first position, the first sealing ring 21 physically blocks the second water outlet 114. At this time, the water inlet 112 and the first water outlet 113 remain unobstructed, and the water flow of the main water channel 12 enters the first branch water channel 13 through the water inlet 112. When the pressing mechanism 3 drives the first sealing ring 21 to move towards the first water outlet 113 to the second position, the first sealing ring 21 physically blocks the first water outlet 113, and the water flow changes direction and enters the second branch water channel 14 through the water inlet 112. Since the water inlet 112 is located between the first water outlet 113 and the second water outlet 114, the water flow passes through the target water outlet through the shortest path in both states, avoiding the pressure loss caused by multiple turns of the water flow in the traditional structure; and the first sealing ring 21 adopts a linear movement sealing method, and its movement trajectory is perpendicular to the water flow direction, so that effective sealing can still be achieved through mechanical pressure under low water pressure conditions. This application shortens the water flow path and reduces pressure loss through a clever water circuit layout, while using a linear sealing structure to simplify moving parts and improve sealing reliability, thus achieving stable switching of the dual water circuits across the entire water pressure range.

[0058] Furthermore, the lever 2 includes a first sealing groove 24 and a second sealing groove 25 spaced apart. A first sealing ring 21 is disposed in the first sealing groove 24, and a second sealing ring 27 is disposed in the second sealing groove 25. The outer diameter of the lever 2 between the first sealing groove 24 and the second sealing groove 25 is smaller than the inner diameter of the sliding hole 11, that is, a flow gap is formed between the lever 2 and the inner wall of the sliding hole 11. The first sealing groove 24 and the second sealing groove 25 can be machined on the surface of the lever 2 to fix the first sealing ring 21 and the second sealing ring 27 respectively, realizing independent installation and dynamic sealing of the double sealing rings. A semi-circular ball head 26 is provided at the end of the lever 2 away from the first sealing groove 24. The semi-circular ball head 26 contacts and connects with the limiting hole on the pressing mechanism 3 to transmit the pressing force.

[0059] Specifically, when the lever 2 slides laterally within the sliding hole 11, the first sealing ring 21 and the second sealing ring 27 maintain sealing contact with the inner wall of the sliding hole 11 within the two first sealing grooves 24 and 25, respectively. When the first sealing ring 21 is in the first position, it blocks the second water channel 14, and the second sealing ring 27 moves synchronously to the outer area of ​​the sliding hole 11. When the first sealing ring 21 moves to the second position, it blocks the first water channel 13, and the second sealing ring 27 forms an auxiliary seal on the outer area of ​​the second water outlet 114, preventing water leakage from the pressing mechanism 3. The reduced outer diameter design of the lever 2 between the first sealing groove 24 and the second sealing groove 25 creates a flow gap between this area and the inner wall of the sliding hole 11, allowing water to pass through.

[0060] Preferably, the second sealing groove 25 is a Y-shaped sealing ring groove, and the second sealing ring 27 is a Y-shaped sealing ring. The Y-shaped sealing ring is mainly made of rubber material and can be well clamped in the Y-shaped sealing ring groove. During the sliding process, the pull rod 2 drives the Y-shaped sealing ring to slide, and uses the elastic compression of rubber and the good water sealing properties to prevent water leakage.

[0061] Furthermore, a pressure ring 4 is provided between the inner wall of the sliding hole 11 and the pull rod 2. One end of the pressure ring 4 extends laterally to the outer side of the sliding hole 11, forming an extension for connection with other components. A first pressure ring sealing surface 41 and a second pressure ring sealing surface 42 are provided at intervals on the outer periphery of the pressure ring 4. Both the first pressure ring sealing surface 41 and the second pressure ring sealing surface 42 are I-shaped sealing grooves, and each is provided with a sealing ring. The sealing ring cooperates with the sealing surface on the main control body 1 to form a closed sealing area, so that the water flow in the main control body 1 will not leak to the outside. A flow channel 43 is formed between the first pressure ring sealing surface 41 and the second pressure ring sealing surface 42. The sliding hole 11 is connected to the second water outlet 114 through the flow channel 43. The second sealing ring 27 is sealed to the inner wall of the pressure ring 4. The inner wall of the pressure ring 4 is designed as a cylindrical surface to cooperate with the Y-shaped sealing ring to ensure sealing. The second sealing ring 27 is located on the outer side of the second water outlet 114. It should be noted that the extension on the pressure ring 4 is used to connect with the pressing mechanism 3, so that the pressing mechanism 3 can be installed on the outer wall of the main control body 1.

[0062] Specifically, the sealing rings installed on the first pressure ring sealing surface 41 and the second pressure ring sealing surface 42 respectively form a double radial seal, effectively isolating the main water passage 12 from the external environment. The sealing fit between the second sealing ring 27 and the inner wall of the pressure ring 4 forms an axial sealing barrier. When the lever 2 is in the second position, the second sealing ring 27 is exactly located outside the second water outlet 114, ensuring that the water flow will not leak from the pressing mechanism 3. The above structure, through the design of multiple sealing rings and sealing surfaces, ensures that the water flow in the main water passage 12 will not leak through the sliding hole 11 through one side wall of the main control body 1, ensuring the effectiveness of the seal, while achieving multi-level protection in a compact space.

[0063] Furthermore, the pressing mechanism 3 includes a switching lever A31, a switching lever B32, and a toothed sleeve 33, wherein:

[0064] One of the switching rods A31 and B32 is provided with a guide post 311, and the other is provided with a guide hole 321. They are connected as one unit through the cooperation of the guide post 311 and the guide hole 321. The guide post 311 and the guide hole 321 refer to the plug-in structure used to connect the switching rod A31 and the switching rod B32. Specifically, it can be achieved by the cooperation of a cylindrical protrusion and a corresponding groove. This structure allows relative rotational freedom while ensuring the axial synchronous movement of the two parts.

[0065] The switching lever A31 has a first inclined surface 312 and a second inclined surface 313 that are inclined in the same direction and alternately arranged. The switching lever B32 has a sawtooth structure 322 with a third inclined surface. The inner side of the gear sleeve 33 has a limiting inclined surface 331 and a guide inclined surface 332 that cooperate with the first inclined surface 312 and the second inclined surface 313. The first inclined surface 312 and the second inclined surface 313 refer to the stepped inclined surfaces formed on the end face of the switching lever A31. The rotation angle of the switching lever A31 is controlled by the angle of the inclined surfaces. The limiting inclined surface 331 and the guide inclined surface 332 refer to the structures on the inner wall of the gear sleeve 33 that match the first inclined surface 312 and the second inclined surface 313 of the switching lever A31, and are used to constrain the position of the switching lever A31.

[0066] The inner wall of the toothed sleeve 33 is provided with a guide groove 333 extending along the length direction. Both the switching rod A31 and the switching rod B32 are provided with a guide platform 314 that cooperates with the guide groove 333. The cooperation between the guide platform 314 and the guide groove 333 is used to limit the linear motion trajectory during the pressing operation.

[0067] Specifically, when switching lever B32 is pressed, it causes switching lever A32 to move linearly along the guide groove 333 of the gear sleeve 33. After the guide platform 314 of switching lever A31 reaches the end of the guide groove 333, the serrated structure 322 on switching lever B32 abuts against the inclined surface on switching lever A31, forcing switching lever A31 to rotate until it engages with the limiting inclined surface 331 of the gear sleeve 33, forming a mechanical self-lock. When switching lever B32 is pressed again, the serrated structure 322 on switching lever B32 abuts against the inclined surface on switching lever A31, forcing switching lever A31 to continue rotating until it engages with the guide inclined surface 332, until the guide platform 314 of switching lever A31 re-enters the guide groove 333 of the gear sleeve 33. Then, under the action of the elastic force of the main control spring 22, the pull rod 2 moves, causing the first sealing ring 31 to be in the first position.

[0068] The principle of the switching mechanism in this application can be referred to the principle of the ballpoint pen pressing, and will not be elaborated here.

[0069] It should be noted that before assembling the lever 2, the main control spring 22 should be installed first, and then the lever 2 should be installed. During this process, the main control spring 22 is in a compressed state. After the lever 2 is installed in place, the elastic force of the main control spring 22 will push the lever 2 outward. After installation, one of the first water passage 13 and the second water passage 14 must be in a closed state. Pressing the switch will switch to the other water passage in a closed state.

[0070] Furthermore, the main control unit 1 is provided with a connection position 15 for connecting to external components at one end of the main water passage 12. The connection position 15 refers to the standardized interface structure provided at the end of the main control unit 1, which can be implemented by means of threads, snaps, or flanges. It forms a matching connection with the water outlet of the shower through its geometric shape, thus introducing the water outlet of the shower into this structure.

[0071] See Figures 9 to 18 This utility model also provides a dual-water-path shower pipe, including a straight pipe 5, a water distribution body 6, at least one water outlet body 7 connected to the water distribution body 6, and any one of the aforementioned dual-water-path switching valves, wherein the end of the water distribution body 6 facing away from the water outlet body 7 is connected to the dual-water-path switching valve. (See reference...) Figure 9 As shown, taking a vertically aligned straight pipe 5 as an example, the straight pipe 5 contains, from bottom to top, a dual-water-path switching valve, a water distribution body 6, and a water outlet body 7. The outer diameters of both the water distribution body 6 and the water outlet body 7 are matched to the inner diameter of the straight pipe 5. During installation, a sealing ring ensures a tight fit with the straight pipe 5. Each water outlet body 7 is equipped with a back spray assembly 8, and both the back spray assembly 8 and the pressing mechanism 3 are located on the side wall of the straight pipe 5. Preferably, the straight pipe 5 refers to a standard pipe with a circular cross-section, specifically a 25mm diameter circular pipe. The water distribution body 7 refers to a water distribution structure built into the straight pipe 5, which connects to the dual-water-path switching valve through an internal flow channel to divert the main water path 12. The water outlet body 7 refers to a water outlet unit connected in series with the water distribution body 6. This application does not limit the number of water outlet bodies 7. Those skilled in the art can set them according to the actual situation. Both the water distribution body 6 and the water outlet body 7 are provided with a first flow path 71 and a second flow path 72 that are respectively connected to the first branch water path 13 and the second branch water path 14. The second flow path 72 on the water outlet body 7 is connected to the back spray assembly 8. The number of back spray assemblies 8 is the same as the number of water outlet bodies 7.

[0072] Specifically, the straight pipe 5 has a mounting sleeve perpendicular to the side wall of the straight pipe 5. The pressing mechanism 3 is installed inside the mounting sleeve and fixed to the mounting sleeve by the pressure cap 34. One end of the switching rod B32 extends out of the pressure cap 34 and is pressed by the user. Optionally, the mounting sleeve is provided with an internal thread, and the pressure cap 34 is provided with an external thread that mates with the internal thread, thereby realizing the connection between the two.

[0073] In this embodiment, the water distribution body 6 includes water distribution body A61 and water distribution body B62. The first flow path 71 formed on water distribution body A61 is connected to the first branch water path 13, and the second flow path 72 formed on water distribution body A61 is connected to the second branch water path 14. A positioning boss 611 is also formed on water distribution body A61, which engages with the positioning hole on the inner wall of the main control body 1. The first flow path 71 formed on water distribution body B62 is connected to the first flow path 71 on water distribution body A61, and the second flow path 72 formed on water distribution body B62 is connected to the second flow path 72 on water distribution body A61. The outlet position of the second flow path 72 on water distribution body B62 forms a first connection structure 621. The inlet of the second flow path 72 on the water outlet body 7 forms a second connecting structure 73 that mates with the first connecting structure 621. Simultaneously, the outlet of the second flow path 72 on the water outlet body 7 forms the first connecting structure 621. The first connecting structure 621 and the second connecting structure 73 can be connected by external and internal threads, thereby achieving the connection between the water distribution body 6 and the water outlet body 7, as well as the connection between two adjacent water outlet bodies 7. This structural design simplifies the installation process of the shower pipe.

[0074] Specifically, the connection between the water distribution body 6 and the dual-channel switching valve divides the main water channel 12 into two independent branches. Water in the first branch 13 flows sequentially along the axial direction of the straight pipe 5 through the first flow path 71 on the water distribution body 6 and the first flow path 71 on the outlet body 7. Water in the second branch 14 is supplied to the corresponding backspray assembly 8 sequentially through the second flow path 72 on the water distribution body 6 and the second flow path 72 on the outlet body 7. This application achieves a modular assembly of the water distribution body 6 and the outlet body 7, allowing the dual-channel structure to be completely integrated within a standard circular pipe without cutting the pipe wall or altering the cross-sectional shape. Furthermore, the backspray assembly 8 is directly integrated into the side wall of the outlet body 7, and its independent water supply via the second flow path 72 avoids pressure interference with the main water channel 12.

[0075] This application achieves an integrated layout of a dual-water-path system inside a standard circular shower pipe, enabling independent control of the back spray function and the main water outlet function while maintaining a standard pipe diameter of 25mm. The modular design of the water distribution body 6 and the water outlet body 7 eliminates the need for precise positioning during assembly, reducing the number of parts and assembly complexity.

[0076] Furthermore, the back spray assembly 8 includes a nozzle housing 81 and a water outlet nozzle 82. The nozzle housing 81 is detachably mounted on the side wall of the water outlet body 7, and the water outlet nozzle 82 is detachably connected to the nozzle housing 81. The water outlet nozzle 82 is a terminal component with a specific water outlet structure. The water outlet nozzle 82 is detachably connected to the nozzle housing 81 by snap-fit ​​or thread, facilitating individual replacement. The nozzle housing 81 is fixed to the mounting position on the side wall of the water outlet body 7 by snap-fit ​​or threaded engagement, eliminating the need for cutting or welding the pipe wall during installation. When the water outlet nozzle 82 is inserted into the nozzle housing 81, its outer sealing ring forms an interference fit with the inner wall of the nozzle housing 81, ensuring the sealing of the water flow channel. When maintenance is required, the nozzle housing 81 can be completely removed to further separate the water outlet nozzle 82 for cleaning or replacement.

[0077] Furthermore, there are multiple water outlets 7, and the end of the last water outlet 7 is provided with a plug 9 for blocking the second flow path 72. The plug 9 includes a blocking part 91 and a water flow passage 92 located on the outer periphery of the blockage. The water flow passage 92 is connected to the first flow path 71 of the last water outlet 7. When multiple water outlets 7 are arranged in series, the outlet of the second flow path 72 of the last water outlet 7 is physically blocked by the blocking part 91 of the plug 9 to prevent water from leaking out from there. At the same time, the water flow passage 92 on the outer periphery of the plug 9 remains connected to the first flow path 71 of the last water outlet 7, allowing the water flow in the first flow path 71 to bypass the blocking part 91 and continue to flow. The plug 9 is equipped with a second connecting structure 73. During assembly, the second connecting structure 73 of the plug 9 connects with the first connecting structure 621 on the water outlet 7, so that the sealing part 91 forms a radial seal with the inner wall of the second flow path 72, while the water flow passage 92 automatically aligns with the outlet of the first flow path 71. When water enters from the first flow path 71, it can be evenly distributed to the subsequent water outlet components along the water flow passage 92 on the outer periphery of the plug 9, avoiding water flow obstruction or pressure loss due to end sealing.

[0078] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A dual waterway selector valve characterized by, include: The main control body has a horizontally arranged sliding hole, one end of which penetrates the side wall of the main control body; a main water channel is formed on one side of the sliding hole in the main control body, and a first branch water channel and a second branch water channel are formed on the other side of the sliding hole, and the main water channel, the first branch water channel, and the second branch water channel are all connected to the sliding hole; A pull rod is slidably disposed in the sliding hole, and a first sealing ring is sleeved on the front end of the pull rod; The pressing mechanism is located outside the main control body and connected to the lever. The pressing mechanism drives the lever to move in the sliding hole so that the first sealing ring is in a first position or a second position. When the first sealing ring is in the first position, the first branch water passage is connected to the main water passage. When the first sealing ring is in the second position, the second branch water passage is connected to the main water passage.

2. The dual waterway switch valve of claim 1, wherein It also includes a main control spring, with a first spring positioning groove provided on the bottom wall of the sliding hole, and a second spring positioning groove provided on one end of the pull rod opposite to the first spring positioning groove; one end of the main control spring is located in the first spring positioning groove, and the other end is located in the second spring positioning groove.

3. The dual waterway switch valve of claim 1, wherein The main waterway is connected to the sliding hole through the inlet hole, and the first branch waterway and the second branch waterway are connected to the sliding hole through the first outlet hole and the second outlet hole, respectively. The inlet hole is located between the first outlet hole and the second outlet hole; the first position is located between the second outlet hole and the inlet hole, and the second position is located between the first outlet hole and the inlet hole. Operate the pressing mechanism to move the first sealing ring to a first position to block the second branch water passage; or move the first sealing ring to a second position to block the first branch water passage.

4. The dual waterway switch valve of claim 3, wherein The pull rod includes a first sealing groove and a second sealing groove that are spaced apart. The first sealing ring is disposed in the first sealing groove, and the second sealing groove is disposed in the second sealing groove. The outer diameter of the pull rod between the first sealing groove and the second sealing groove is smaller than the inner diameter of the sliding hole. The end of the lever away from the first sealing groove is provided with a semi-circular ball head, which is in contact with the pressing mechanism.

5. The dual waterway switch valve of claim 4, wherein A pressure ring is also provided between the inner wall of the sliding hole and the pull rod. One end of the pressure ring extends laterally to the outside of the sliding hole. A first pressure ring sealing surface and a second pressure ring sealing surface are provided at intervals on the outer periphery of the pressure ring. A sealing ring is provided on both the first pressure ring sealing surface and the second pressure ring sealing surface. A flow channel is formed between the first pressure ring sealing surface and the second pressure ring sealing surface. The sliding hole is connected to the second branch water channel through the flow channel. The second sealing ring is sealed to the inner wall of the pressure ring, and the second sealing ring is located outside the second water outlet.

6. The dual waterway switch valve of claim 1, wherein The pressing mechanism includes a switching lever A, a switching lever B, and a toothed sleeve, wherein: One of the switching rods A and B is provided with a guide post, and the other is provided with a guide hole. The guide post and the guide hole are connected as one unit through their cooperation. The switching rod A has a first inclined surface and a second inclined surface that are inclined in the same direction and are arranged alternately on the opposite side of the switching rod B. The switching rod B has a serrated structure with a third inclined surface. The inner side of the toothed sleeve has a limiting inclined surface and a guiding inclined surface that cooperate with the first inclined surface and the second inclined surface. The inner wall of the gear sleeve is provided with a guide groove extending along the length direction, and both the switching rod A and the switching rod B are provided with a guide platform that cooperates with the guide groove.

7. The dual waterway switch valve of claim 1, wherein The main control unit is located at one end of the main waterway and has a connection point for connecting to external components.

8. A dual waterway shower arm characterized by, The system includes a straight pipe, which contains a water distribution body and at least one water outlet connected to the water distribution body. The end of the water distribution body facing away from the water outlet is connected to a dual water path switching valve as described in any one of claims 1-7. Each water outlet is provided with a back spray assembly. Both the water distribution body and the water outlet body are provided with a first flow path and a second flow path that are respectively connected to the first branch water path and the second branch water path. The second flow path on the water outlet body is connected to the back spray assembly.

9. The dual waterway shower arm of claim 8, wherein, The back spray assembly includes a nozzle housing and a water outlet nozzle. The nozzle housing is detachably mounted on the side wall of the water outlet body, and the water outlet nozzle is detachably connected to the nozzle housing.

10. The dual waterway shower arm of claim 8, wherein, There are multiple water outlets, and the outermost water outlet is provided with a plug at its end for blocking the second flow path. The plug includes a blocking part and a water flow passage located on the outer periphery of the block, and the water flow passage is connected to the first flow path.

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