Waterway switching mechanism and puller

Abstract

The application discloses a waterway switching mechanism and belongs to the technical field of faucets. The first switching valve and the second switching valve in the waterway switching mechanism are arranged in an axial mode. Thus, in the process of switching water channels by the waterway switching mechanism, two switching valves are respectively driven by two jacks, and the two switching valves are directly linked. The linkage between the center plug valve rods is omitted, components of the waterway switching mechanism are reduced, the structure of the waterway switching structure is simplified, and the cost can be reduced to a certain extent. In addition, the axial arrangement of the two switching valves is friendly to the flat design of the appearance of the waterway switching mechanism, and can make the product thinner and more high-end.

Description

Technical Field

[0001] This application relates to the field of faucet technology, and in particular to a water path switching mechanism and a pull-out head. Background Technology

[0002] There are two main types of water types for pull-out faucets: soft water and shower water. Soft water is suitable for regular washing because it saves water and has a gentle feel, while shower water is suitable for rinsing because of its high impact and wide impact range. Both types of water have their own usage scenarios in daily life, and it is necessary to switch between the two types of water from time to time.

[0003] In order to achieve the switching of different water types, the current water circuit switching mechanism integrates at least two valve stems and a linkage rod that links the movement of at least two valve stems, resulting in a complex structure and high cost. Utility Model Content

[0004] This application provides a water channel switching mechanism and a pull-out head. It solves the problems of complex structure and high cost in existing water channel switching mechanisms. The technical solution is as follows:

[0005] On the one hand, a waterway switching mechanism is provided, the waterway switching mechanism comprising:

[0006] Water circuit main shell, first switching valve, second switching valve, first key body and second key body;

[0007] The main water channel shell extends along a first direction, and one end of the main water channel shell along the first direction has a water inlet, and the other end has a first water outlet, a second water outlet, and a third water outlet; the water flow path from the water inlet outlet to the first water outlet is a first waterway, the water flow path from the water inlet outlet to the second water outlet is a second waterway, and the water flow path from the water inlet outlet to the third water outlet is a third waterway;

[0008] The first switching valve and the second switching valve are arranged along the first direction and are both slidably installed in the main housing of the water circuit. The central axis of the first switching valve is parallel to the central axis of the second switching valve and is also parallel to the first direction. The first switching valve is closer to the water inlet hole than the second switching valve.

[0009] The first key body is movably connected to the main water circuit shell and to the first switching valve, and the second key body is movably connected to the main water circuit shell and to the second switching valve;

[0010] In the initial state, the water inlet is connected to the first water channel. The first key is used to drive the first switching valve to move in a direction close to the second switching valve, so that the first switching valve closes the first water channel and opens the second water channel; or the second key is used to drive the second switching valve to move in a direction close to the first switching valve, and push the first switching valve to move in a direction away from the second switching valve, so that the second switching valve opens the third water channel and closes the first water channel, and the first switching valve closes the second water channel.

[0011] Optionally, the first switching valve and the second switching valve are coaxially arranged.

[0012] Optionally, the main housing of the water circuit has a mounting cavity communicating with the outlet of the water inlet, and both the first switching valve and the second switching valve are installed in the mounting cavity;

[0013] The main water casing also has a flow hole located on the side of the water inlet outlet that communicates with both the mounting cavity and the second water outlet, and a first flow hole located on the side of the water inlet outlet away from the flow hole that communicates with the mounting cavity; the main water casing also has a second flow hole and a third flow hole that communicate with the mounting cavity, the inlet of the second flow hole being located between the outlet of the first flow hole and the inlet of the first flow hole and communicating with the first water outlet, and the inlet of the third flow hole being located on the side of the outlet of the first flow hole away from the inlet of the second flow hole and communicating with the third water outlet;

[0014] Specifically, when the end of the first switching valve away from the second switching valve is sealed against the portion of the main water casing located between the inlet outlet and the flow hole, the inlet outlet is connected to the first flow hole; when the end of the first switching valve away from the second switching valve is sealed against the portion of the main water casing located between the inlet outlet and the first flow hole inlet, the inlet outlet is connected to the flow hole; when the end of the second switching valve away from the first switching valve is sealed against the portion of the main water casing located between the first flow hole outlet and the third flow hole inlet, the first flow hole outlet is connected to the second flow hole inlet; when the end of the second switching valve away from the first switching valve is sealed against the portion of the main water casing located between the first flow hole outlet and the second flow hole inlet, the first flow hole outlet is connected to the third flow hole inlet.

[0015] Optionally, the main water circuit housing includes: an outer shell, and a front valve seat and a main valve seat fixed inside the outer shell and arranged along a first direction; the front valve seat is located at one end of the outer shell and forms the water inlet with the outer shell, the water inlet outlet is distributed on the side of the front valve seat, the front valve seat is provided with a part of the mounting cavity, and the side is provided with the flow hole;

[0016] One end of the main valve seat is in sealed contact with one end of the front valve seat. The main valve seat is provided with another part of the mounting cavity, and the side is provided with the first flow hole inlet and the second flow hole inlet. The outer shell is provided with the first flow hole outlet and the third flow hole inlet.

[0017] Optionally, the first switching valve includes a first valve stem, and the second switching valve includes a second valve stem. Both the first valve stem and the second valve stem have a first end and a second end disposed opposite to each other along a first direction, and the first end of the first valve stem and the first end of the second valve stem are disposed adjacent to each other.

[0018] The water circuit switching mechanism further includes: a first reset elastic element and a second reset elastic element, wherein the two ends of the first reset elastic element are in contact with the second end of the water circuit main housing and the first valve stem, respectively; and the two ends of the second reset elastic element are in contact with the second end of the water circuit main housing and the second valve stem, respectively.

[0019] Optionally, the circumferential side of the second end of the first valve stem has an annular first snap-fit ​​groove, and the first switching valve further includes: an annular first sealing ring installed in the first snap-fit ​​groove;

[0020] The second valve stem has a second snap-fit ​​groove on the circumferential side of its second end; the second switching valve further includes a second annular sealing ring installed in the second snap-fit ​​groove.

[0021] Optionally, the central portion of the first key body is rotatably connected to the main housing of the water passage, and the side of the first key body facing the first switching valve has a first snap-fit ​​portion for snap-fit ​​connection with the first switching valve.

[0022] The second key body is slidably connected to the main housing of the water circuit along the first direction, and the side of the second key body facing the second switching valve has a second locking part for engaging with the second switching valve.

[0023] Optionally, the first and second bodies are disposed on both sides of the main water channel shell along a second direction, which intersects with the first direction.

[0024] Optionally, the water circuit switching mechanism further includes: an upper housing and a lower housing connected to each other, the upper housing being fitted onto the main water circuit housing and having a first limiting hole for installing the first key body; the lower housing being fitted onto the bottom of the main water circuit housing and having a second limiting hole for installing the second key body.

[0025] On the other hand, a pull-out head is provided, the pull-out head including: a pull-out head body, and a water channel switching structure connected to the end of the pull-out head body, the water channel switching structure being any of the water channel switching structures given above.

[0026] The beneficial effects of the technical solutions provided in this application include at least the following:

[0027] By axially arranging the first and second switching valves in the water channel switching mechanism, the two valves are driven by two separate actuators during water channel switching. The two valves are directly linked, eliminating the need for a central valve stem linkage. This reduces the number of components in the water channel switching mechanism, simplifies its structure, and lowers costs to some extent. Furthermore, the axially opposed design of the two switching valves is conducive to a flatter, more streamlined design of the water channel switching mechanism, allowing for a thinner and more sophisticated product. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a cross-sectional view of a waterway switching mechanism provided in an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the waterway distribution of a waterway switching mechanism provided in an embodiment of this application;

[0031] Figure 3 This is a schematic diagram illustrating the effect of the first waterway being opened according to an embodiment of this application;

[0032] Figure 4 This is a schematic diagram illustrating the effect of the two switching valves when the second waterway is open, as provided in the embodiments of this application.

[0033] Figure 5 This is a schematic diagram illustrating the effect of the second waterway being open according to an embodiment of this application;

[0034] Figure 6 This is a schematic diagram illustrating the effect of the two switching valves when the third waterway is open, as provided in the embodiments of this application.

[0035] Figure 7 This is a schematic diagram illustrating the effect of the third waterway being open according to an embodiment of this application;

[0036] Figure 8 This is a cross-sectional view from one perspective of another waterway switching mechanism provided in the embodiments of this application;

[0037] Figure 9 This is a cross-sectional view from another perspective of another waterway switching mechanism provided in the embodiments of this application;

[0038] Figure 10 This is an exploded schematic diagram of a waterway switching mechanism provided in an embodiment of this application;

[0039] Figure 11 yes Figure 10 An exploded schematic diagram of a portion of the waterway switching mechanism is shown.

[0040] Figure 12 yes Figure 10 An exploded view of another part of the waterway switching mechanism is shown.

[0041] Figure 13 This is a front view of a casing provided in an embodiment of this application;

[0042] Figure 14 yes Figure 13 Sectional view at A-A';

[0043] Figure 15 This is a schematic diagram of the structure of a pull-out head provided in an embodiment of this application;

[0044] Figure 16 yes Figure 15 The diagram shows the effect of using the pull-out head.

[0045] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0048] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0049] Please refer to Figures 1-7 , Figure 1 This is a cross-sectional view of a waterway switching mechanism provided in an embodiment of this application. Figure 2 This is a schematic diagram of the waterway distribution of a waterway switching mechanism provided in an embodiment of this application. Figures 3 to 7 This is a schematic diagram of the water outlet effect under different states. The water circuit switching mechanism may include: water circuit main shell 100, first switching valve 200, second switching valve 300, first key body 400 and second key body 500.

[0050] The main water channel housing 100 in the water channel switching mechanism can extend along a first direction f1, and one end of the main water channel housing 100 along the first direction f1 can have a water inlet K, while the other end of the main water channel housing 100 can have a first water outlet k1, a second water outlet k2, and a third water outlet k3. The water flow path from the outlet k4 of the inlet K to the first water outlet k1 can be a first water channel S1, the water flow path from the outlet k4 of the inlet K to the second water outlet k2 can be a second water channel S2, and the water flow path from the outlet k4 of the inlet K to the third water outlet k3 can be a third water channel S3. Here, the water flowing out from the first water outlet k1, the second water outlet k2, and the third water outlet k3 can provide different spray patterns for the pull-out head integrated with the water channel switching mechanism. For example, a shower water panel A can be installed at the second water outlet k2.

[0051] The first switching valve 200 and the second switching valve 300 are arranged along the first direction f1 and are both slidably installed inside the main water circuit housing 100. The central axis L1 of the first switching valve 200 and the central axis L2 of the second switching valve 300 are parallel and can both be parallel to the first direction f1. The first switching valve 200 can be closer to the water inlet K than the second switching valve 300.

[0052] The first key body 400 can be movably connected to the main water circuit housing 100 and synchronously connected to the first switching valve 200; the second key body 500 can be movably connected to the main water circuit housing 100 and synchronously connected to the second switching valve 300.

[0053] In the initial state, the inlet hole K is connected to the first waterway S1. The first key 400 can be used to drive the first switching valve 200 to move in a direction closer to the second switching valve 300, so that the first switching valve 200 closes the first waterway S1 and opens the second waterway S2. Alternatively, the second key 500 can be used to drive the second switching valve 300 to move in a direction closer to the first switching valve 200, and push the first switching valve 200 to move in a direction away from the second switching valve 300, so that the second switching valve 300 opens the third waterway S3 and closes the first waterway S1, and the first switching valve 200 closes the second waterway S2.

[0054] In this embodiment, by axially arranging the first switching valve 200 and the second switching valve 300 in the water channel switching mechanism, the two switching valves are driven by two separate actuators during water channel switching. The two switching valves are directly linked, eliminating the need for a linkage between the central valve stem and the central valve. This reduces the number of components in the water channel switching mechanism, simplifies its structure, and lowers costs to some extent. Furthermore, the axially opposed arrangement of the two switching valves is conducive to a flattened design of the water channel switching mechanism, allowing for a thinner and more sophisticated product.

[0055] For example, such as Figure 1 and Figure 3 As shown, in the initial state, the inlet K of the water path switching mechanism can be connected to the first water channel S1. That is, after water is introduced into the water path switching mechanism, the water can flow out from the first outlet k1 through the outlet k4 of the inlet K and the first water channel. Figure 4 and Figure 5 As shown, when the first switching valve 200 is moved to the first position by the first switch body 400 along the direction close to the second switching valve 300, the first switching valve 200 can close the first water channel S1 and open the second water channel S2, so that the water can flow out from the second outlet k2 through the inlet hole K outlet k4 and the second water channel S2. Figure 6 and Figure 7 As shown, when the second switching valve 300 is driven by the second switch body 500 to move towards the first switching valve 200 to the second position, and the second switching valve 300 pushes the first switching valve 200 to move, the second switching valve 300 opens the third water channel S3 and closes the first water channel S1, while the first switching valve 200 closes the second water channel S2. Thus, water can flow through the inlet hole K, outlet k4, and the third water channel, exiting from the third outlet k3. In other words, through the direct linkage between the second switching valve 300 and the first switching valve 200, the function of quickly switching from the water outlet state of the first or second water channel to the water outlet state of the third water channel can be achieved.

[0056] In summary, this application provides a water channel switching mechanism, which may include: a water channel main housing, a first switching valve, a second switching valve, a first retainer, and a second retainer. By axially arranging the first and second switching valves in the water channel switching mechanism, during water channel switching, the two retainers drive the two switching valves respectively, and the two switching valves are directly linked, eliminating the need for the linkage between the central valve stem. This reduces the number of components in the water channel switching mechanism, simplifies the structure, and reduces costs to some extent. Furthermore, the axially opposed arrangement of the two switching valves is aesthetically pleasing and allows for a flatter, more streamlined design, enabling thinner and more premium-looking products.

[0057] Optional, such as Figure 1 As shown, the first switching valve 200 can be coaxially arranged with the second switching valve 300, that is, the central axis L1 of the first switching valve 200 can be coaxially arranged with the central axis L2 of the second switching valve 300.

[0058] In the embodiments of this application, please refer to Figure 8 and Figure 9 , Figure 8 This is a cross-sectional view from one perspective of another waterway switching mechanism provided in the embodiments of this application. Figure 9 This is a cross-sectional view from another perspective of a water circuit switching mechanism provided in this application embodiment. The main water circuit housing 100 may have a mounting cavity Q communicating with the outlet k4 of the inlet hole K, and both the first switching valve 200 and the second switching valve 300 may be installed in the mounting cavity Q. The main water circuit housing 100 may also have a flow hole k5 located on one side of the outlet k4 of the inlet hole K, communicating with both the mounting cavity Q and the second outlet k2, and a first flow hole k6 distributed on the side of the outlet k4 of the inlet hole K away from the flow hole k5, communicating with the mounting cavity Q. The main water circuit housing 100 may also have a second flow hole k7 and a third flow hole k8 communicating with the mounting cavity Q. The inlet of the second flow hole k7 may be located between the outlet and the inlet of the first flow hole k6 and may communicate with the first outlet k1. The inlet of the third flow hole k8 may be located on the side of the outlet of the first flow hole k6 away from the inlet of the second flow hole k7 and may communicate with the third outlet k3.

[0059] Specifically, when the end of the first switching valve 200 away from the second switching valve 300 seals against the portion of the main water housing 100 located between the inlet outlet k4 and the flow hole k5, the inlet outlet k4 and the first flow hole k6 are connected. When the end of the first switching valve 200 away from the second switching valve 300 seals against the portion of the main water housing 100 located between the inlet outlet k4 and the inlet of the first flow hole k6, the waterway between the inlet outlet k4 and the flow hole k5 is connected.

[0060] After the end of the second switching valve 300 away from the first switching valve 200 seals against the portion of the main water housing 100 located between the outlet of the first flow hole k6 and the inlet of the third flow hole k8, the water passage between the outlet of the first flow hole k6 and the inlet of the second flow hole k7 is opened.

[0061] For example, by arranging the first switching valve 200 and the second switching valve 300 along the first direction f1 within the mounting cavity Q, and sealing the end of the first switching valve 200 away from the second switching valve 300 against the portion of the main housing 100 located between the outlet k4 of the inlet hole K and the flow hole k5, the outlet k4 of the inlet hole K and the first flow hole k6 can be connected. After the end of the second switching valve 300 away from the first switching valve 200 seals against the portion of the main housing 100 located between the outlet of the first flow hole k6 and the inlet of the third flow hole k8, the outlet of the first flow hole k6 and the inlet of the second flow hole k7 are connected. Thus, water flows sequentially into the mounting cavity Q from the outlet k4 of the inlet hole K and the first flow hole k6, and then flows out from the second flow hole k7 and the first outlet k1. Alternatively, after the end of the second switching valve 300 opposite to the first switching valve 200 seals against the portion of the main housing 100 between the outlet of the first flow hole k6 and the inlet of the second flow hole k7, the outlet of the first flow hole k6 and the inlet of the third flow hole k8 are connected. In this way, water flows sequentially from the outlet k4 of the inlet hole K and the first flow hole k6 into the mounting cavity Q, and then flows out through the third flow hole k8 and the third outlet k3. Alternatively, after the end of the first switching valve 200 opposite to the second switching valve 300 seals against the portion of the main housing 100 between the outlet k4 of the inlet hole K and the inlet of the first flow hole k6, the outlet k4 of the inlet hole K and the flow hole k5 are connected. In this way, water flows sequentially from the outlet k4 of the inlet hole K into the mounting cavity Q, and then flows out through the flow hole k5 and the second outlet k2.

[0062] Optional, please refer to Figure 8 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 , Figure 10 This is an exploded view of a waterway switching mechanism provided in an embodiment of this application. Figure 11 yes Figure 10 The diagram shown is an exploded view of a portion of the waterway switching mechanism. Figure 12 yes Figure 10 An exploded view of another part of the waterway switching mechanism is shown. Figure 13This is a front view of a casing provided in an embodiment of this application. Figure 14 yes Figure 13 A cross-sectional view at A-A'. The main water system housing 100 may include: an outer housing 101, and a front valve seat 102 and a main valve seat 103 fixed within the outer housing 101 along a first direction f1. The front valve seat 102 may be located at one end of the outer housing 101 and form an inlet hole K with the outer housing 101. The outlet k4 of the inlet hole K may be distributed on the side of the front valve seat 102. The front valve seat 102 may be provided with a portion of the mounting cavity Q, and a flow hole k5 is provided on the side of the front valve seat 102. One end of the main valve seat 103 contacts one end of the front valve seat 102. The main valve seat 103 is provided with the other part of the mounting cavity Q, and a first flow hole k6 inlet and a second flow hole k7 inlet are provided on the side of the main valve seat 103. The outer housing 101 may be provided with a first flow hole k6 outlet and a third flow hole k8 inlet. It should be noted that the portions of the first switching valve 200 and the second switching valve 300 located within the front valve seat 102 and the main valve seat 103 need to reserve space for water flow.

[0063] In the embodiments of this application, such as Figures 8 to 10 As shown, the first switching valve 200 may include a first valve stem 201, and the second switching valve 300 may include a second valve stem 301. Both the first valve stem 201 and the second valve stem 301 may have a first end and a second end disposed opposite to each other along a first direction f1, with the first end of the first valve stem 201 and the first end of the second valve stem 301 being adjacent to each other. The water circuit switching mechanism further includes a first reset elastic member 600 and a second reset elastic member 700. The two ends of the first reset elastic member 600 may respectively contact the water circuit main housing 100 and the second end of the first valve stem 201. The two ends of the second reset elastic member 700 may respectively contact the water circuit main housing 100 and the second end of the second valve stem 301.

[0064] In this configuration, by setting the first reset elastic element 600 and the second reset elastic element 700, the first valve stem 201 and the second valve stem 301 are kept in their initial positions, thus keeping the first waterway open. Simultaneously, the first valve stem 201 is moved closer to the second valve stem 301 (e.g., to the left) by the first key 400, while the first reset elastic element 600 is compressed, causing the first valve stem 201 to close the first waterway and open the second waterway. Water flows out through the inlet hole K, outlet k4, and flow hole k5, and the pressure exerted by the water flow on the bearing surface of the second end of the first valve stem 201 overcomes the rebound force of the first reset elastic element 600. If the water supply is interrupted at this moment, the first valve stem 201 moves away from the second valve stem 301 under the action of the first reset elastic element 600, closing the second waterway and opening the first waterway, allowing water to flow out from the first waterway, thereby achieving the function of resetting to the initial state after water supply interruption.

[0065] When water is flowing from the second water channel, the second valve stem 301 is moved closer to the first valve stem 201 (e.g., to the right) by the second key 500, which in turn moves the first valve stem 201 (e.g., to the right). Water then flows out from the third water channel, achieving a quick switch from water flowing from the second outlet channel to water flowing from the third outlet channel. If the water supply is interrupted at this moment, the second valve stem 301 moves to the left under the action of the second reset elastic element 700. After the water supply is restored, water flows out from the first water channel, achieving a reset to the initial state after the water supply is interrupted.

[0066] For example, both the first reset elastic element 600 and the second reset elastic element 700 can be helical springs sleeved on the corresponding valve stem.

[0067] In this application, as Figure 8 and Figure 9 As shown, the circumferential side surface of the second end of the first valve stem 201 may have an annular first locking groove 201a, and the first switching valve 200 may further include an annular first sealing ring 202 installed in the first locking groove 201a of the first valve stem 201. The circumferential side surface of the second end of the second valve stem 301 may have a second locking groove 301a, and the second switching valve 300 may further include an annular second sealing ring 302 installed in the second locking groove 301a.

[0068] Optional, such as Figure 10 As shown, the portion between the two ends of the first key 400 can be rotatably connected to the main housing 100 of the water circuit, and the side of the first key 400 facing the first switching valve 200 can have a first engaging portion 401 that engages with the first switching valve 200. The second key 500 can be slidably connected to the main housing 100 of the water circuit, and the side of the second key 500 facing the second switching valve 300 can have a second engaging portion 501 that engages with the second switching valve 300. In this case, by pushing the second key 500 to reciprocate along the first direction f1, the second switching valve 300 can be driven to reciprocate along the first direction f1. By pressing the two ends of the first key 400, the reciprocating movement of the first switching valve 200 along the first direction f1 can be achieved.

[0069] It should be noted that the first locking part 401 in the first key body 400 can be locked with the first end of the first valve stem 201, and the second locking part 501 in the second key body 500 can be locked with the second end of the second valve stem 301.

[0070] For example, the first key body 400 and the second key body 500 are disposed on both sides of the water channel main shell 100 along a second direction f2, which may intersect with the first direction f1. For instance, the first key body 400 and the second key body 500 may be disposed opposite each other along the second direction f2.

[0071] In the embodiments of this application, such as Figure 10 As shown, the water channel switching mechanism may further include an upper housing 800 and a lower housing 900 connected to each other. The upper housing 800 is fitted onto the main water channel housing 100 and has a first limiting hole 801 for mounting the first key 400. The lower housing 900 is fitted onto the bottom of the main water channel housing 100 and may have a second limiting hole 901 for mounting the second key 500. In this case, the upper housing 800 and the lower housing 900 can enclose and protect the main water channel housing 100, and can also modify the appearance of the water channel switching mechanism.

[0072] This application also provides a pull-out head, please refer to... Figure 15 and Figure 16 , Figure 15 This is a schematic diagram of a pull-out head provided in an embodiment of this application. Figure 16 yes Figure 15 The diagram shows the effect of using the pull-out head. The pull-out head may include: a pull-out head body 001, and a water channel switching structure 000 connected to the end of the pull-out head body. The water channel switching structure 000 is any of the water channel switching structures given above.

[0073] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0074] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A waterway switching mechanism, characterized in that, include: Water circuit main shell, first switching valve, second switching valve, first key body and second key body; The main water channel shell extends along a first direction, and one end of the main water channel shell along the first direction has a water inlet, and the other end has a first water outlet, a second water outlet, and a third water outlet; the water flow path from the water inlet outlet to the first water outlet is a first waterway, the water flow path from the water inlet outlet to the second water outlet is a second waterway, and the water flow path from the water inlet outlet to the third water outlet is a third waterway; The first switching valve and the second switching valve are arranged along the first direction and are both slidably installed in the main housing of the water circuit. The central axis of the first switching valve is parallel to the central axis of the second switching valve and is also parallel to the first direction. The first switching valve is closer to the water inlet hole than the second switching valve. The first key body is movably connected to the main water channel shell and synchronously connected to the first switching valve; the second key body is movably connected to the main water channel shell and synchronously connected to the second switching valve. In the initial state, the water inlet is connected to the first water channel, and the first key is used to drive the first switching valve to move in a direction close to the second switching valve so that the first switching valve closes the first water channel and opens the second water channel; or the second key is used to drive the second switching valve to move in a direction close to the first switching valve, and push the first switching valve to move through the second switching valve so that the second switching valve opens the third water channel and closes the first water channel, and the first switching valve closes the second water channel.

2. The waterway switching mechanism according to claim 1, characterized in that, The first switching valve and the second switching valve are coaxially arranged.

3. The waterway switching mechanism according to claim 1, characterized in that, The main housing of the water circuit has a mounting cavity that communicates with the outlet of the water inlet, and both the first switching valve and the second switching valve are installed in the mounting cavity; The main water casing also has a flow hole located on the side of the water inlet outlet that communicates with both the mounting cavity and the second water outlet, and a first flow hole distributed on the side of the water inlet outlet away from the flow hole that communicates with the mounting cavity; the main water casing also has a second flow hole and a third flow hole that communicate with the mounting cavity, the inlet of the second flow hole being located between the outlet of the first flow hole and the inlet of the first flow hole and communicating with the first water outlet, and the inlet of the third flow hole being located on the side of the outlet of the first flow hole away from the inlet of the second flow hole and communicating with the third water outlet; Specifically, after the end of the first switching valve away from the second switching valve seals against the portion of the main water casing located between the inlet outlet and the flow hole, the inlet outlet is connected to the first flow hole; after the end of the first switching valve away from the second switching valve seals against the portion of the main water casing located between the inlet outlet and the first flow hole inlet, the inlet outlet is connected to the flow hole; after the end of the second switching valve away from the first switching valve seals against the portion of the main water casing located between the first flow hole outlet and the third flow hole inlet, the first flow hole outlet is connected to the second flow hole inlet; after the end of the second switching valve away from the first switching valve seals against the portion of the main water casing located between the first flow hole outlet and the second flow hole inlet, the first flow hole outlet is connected to the third flow hole inlet.

4. The waterway switching mechanism according to claim 3, characterized in that, The main water circuit housing includes: an outer shell, and a front valve seat and a main valve seat fixed inside the outer shell and arranged along a first direction; the front valve seat is located at one end of the outer shell and forms the water inlet with the outer shell, the water inlet outlet is distributed on the side of the front valve seat, the front valve seat is provided with a part of the mounting cavity, and the side is provided with the flow hole; One end of the main valve seat contacts one end of the front valve seat. The main valve seat is provided with another part of the mounting cavity. The side of the main valve seat is provided with the first flow hole inlet and the second flow hole inlet. The outer shell is provided with the first flow hole outlet and the third flow hole inlet.

5. The waterway switching mechanism according to claim 3, characterized in that, The first switching valve includes a first valve stem, and the second switching valve includes a second valve stem. Both the first valve stem and the second valve stem have a first end and a second end that are disposed opposite to each other along a first direction. The first end of the first valve stem and the first end of the second valve stem are disposed adjacent to each other. The water circuit switching mechanism further includes: a first reset elastic element and a second reset elastic element, wherein the two ends of the first reset elastic element are in contact with the second end of the water circuit main housing and the first valve stem, respectively; and the two ends of the second reset elastic element are in contact with the second end of the water circuit main housing and the second valve stem, respectively.

6. The waterway switching mechanism according to claim 5, characterized in that, The second end of the first valve stem has a circumferential side surface with an annular first snap-fit ​​groove, and the first switching valve further includes: an annular first sealing ring installed in the first snap-fit ​​groove; The second valve stem has a second snap-fit ​​groove on its circumferential side at the second end; the second switching valve further includes an annular second sealing ring installed in the second snap-fit ​​groove.

7. The waterway switching mechanism according to any one of claims 1-6, characterized in that, The portion between the two ends of the first key body is rotatably connected to the main housing of the water passage, and the side of the first key body facing the first switching valve has a first snap-fit ​​portion that engages with the first switching valve. The second key body is slidably connected to the main housing of the water circuit along the first direction, and the side of the second key body facing the second switching valve has a second snap-fit ​​part that engages with the second switching valve.

8. The waterway switching mechanism according to claim 7, characterized in that, The first key body and the second key body are disposed on both sides of the main water channel shell along the second direction, which intersects with the first direction.

9. The waterway switching mechanism according to any one of claims 1-6, characterized in that, The water circuit switching mechanism further includes an upper housing and a lower housing connected to each other. The upper housing is fitted onto the main water circuit housing and has a first limiting hole for installing the first key body. The lower housing is fitted onto the bottom of the main water circuit housing and has a second limiting hole for installing the second key body.

10. A pull-out head, characterized in that, include: A pull-out head body, and a water path switching structure connected to the end of the pull-out head body, wherein the water path switching structure is the water path switching mechanism described in any one of claims 1-9.

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