Switching valve

Abstract

The utility model discloses a switching valve which comprises a valve body provided with at least two water channels. The valve rod is provided with an abutting part, and the valve rod moves between an initial position and a functional position; the retaining part moves between a retaining position and a reset position and is provided with a through hole, the valve rod penetrates through the through hole, and the abutting part is matched with the hole wall slope of the through hole when the valve rod moves to the function position from the initial position so that the retaining part can move to the reset position from the retaining position; the first elastic piece is arranged between the valve body and the retaining piece so as to push the retaining piece to reset from the reset position to the retaining position after the abutting part passes through the through hole from the initial position, and the retaining piece abuts against the abutting part at the retaining position so as to prevent the valve rod from resetting to the initial position; the second elastic piece is arranged between the valve body and the valve rod, and when the retaining piece moves to the reset position from the retaining position, the valve rod is pushed to move to the initial position from the functional position. The switching valve is simple in structure, convenient to operate and capable of achieving stable switching among a plurality of water channels.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to a switching valve. Background Art

[0002] In fluid control systems, switching valves are common control components used to regulate the flow direction of fluids or switch between different fluid channels. Traditional switching valves usually use multiple independent valves to control different waterways. This approach not only takes up a lot of space but is also prone to misoperation during operation. To address these problems, some improved switching valves have appeared on the market. They attempt to reduce space occupancy through integrated design and achieve control of multiple waterways through complex mechanical structures. However, these switching valves often have problems such as complex structure, inconvenient operation, and insufficient reliability. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a switching valve with a simple structure, easy operation and stable switching between multiple water channels.

[0004] To achieve the above objectives, the various embodiments of the present invention adopt the following technical solutions but are not limited to the following solutions:

[0005] The first technical solution relates to a switching valve, comprising: a valve body, which is provided with at least two water channels; a valve stem, which is arranged corresponding to the water channels and is provided with an abutment portion, and the valve stem moves between an initial position and a functional position relative to the valve body along a first direction; a retaining member, which moves between a holding position and a reset position perpendicular to the first direction relative to the valve body, the retaining member is provided with a through hole corresponding to the valve stem, the valve stem passes through the through hole along the first direction, and the abutment portion cooperates with the inclined surface of the hole wall of the through hole when the valve stem moves from the initial position to the functional position to enable the retaining member to move from the holding position to the reset position; a first elastic member, which is placed between the valve body and the retaining member to push the retaining member from the holding position to the reset position after the abutment portion passes through the through hole from the initial position. The valve stem is reset to its initial position by pressing the first spring which in turn presses the cam to the stop position, and the valve stem is reset to its initial position by pressing the cam to the stop position. The valve stem is reset to its initial position by pressing the first spring which in turn presses the cam to the stop position, and space is provided for the newly pressed valve stem to move downward in the first direction. Under the action of the first elastic member, the valve stem is reset to its initial position by pressing the first spring which in turn presses the cam to the stop position, and the valve stem is prevented from moving upward in the first direction.

[0006] The second technical solution is based on the first technical solution, which further includes an interlocking part; any two valve stems form a valve stem group, and each valve stem group is correspondingly provided with an interlocking part, the interlocking part is rotatably connected to the valve body and forms a lever, and the two ends of the lever act on the two valve stems in the corresponding valve stem group respectively, so that the two valve stems in the corresponding valve stem group cannot move from the initial position to the functional position at the same time.

[0007] The third technical solution is based on the second technical solution, wherein the valve stem is provided with a radially protruding locking portion, and the two ends of the interlocking member respectively act on the locking portions of the two valve stems in the corresponding valve stem group; when one of the valve stems of the valve stem group is in the functional position, one end of the interlocking member lever is close to the locking portion of the valve stem, and the other end remains in a non-contact state with the locking portion of the other valve stem of the valve stem group.

[0008] The fourth technical solution is based on the third technical solution, wherein the locking portion is located above the abutting portion along the first direction.

[0009] The fifth technical solution is based on the fourth technical solution, wherein the locking portion protrudes from the valve stem along a third direction perpendicular to the first direction, and the abutting portion protrudes from the valve stem along a second direction.

[0010] The sixth technical solution is based on the first technical solution, wherein the abutment portion is provided with a first inclined surface, and the hole wall of the through hole is provided with a second inclined surface matching the first inclined surface, and the two drive the retaining member to move through the inclined surface cooperation.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the abutment portion is further provided with an abutment surface facing upward along the first direction. After the abutment portion passes through the through hole from the initial position, the retaining member presses against the abutment surface along the first direction at the retaining position to prevent the valve stem from returning to the initial position from the functional position.

[0012] The eighth technical solution is based on the seventh technical solution, wherein the abutment portion is further provided with a first introduction surface and a second introduction surface connected as one body, the first introduction surface is connected to the abutment surface, and the second introduction surface is connected to the first inclined surface so that the abutment portion passes through the through hole.

[0013] The ninth technical solution is based on the sixth technical solution, wherein the second inclined surface is arranged on a side close to the first elastic member.

[0014] The tenth technical solution is based on any one of the first to ninth technical solutions, wherein the number of water channels of the valve body is three.

[0015] From the above description of the various embodiments of the present invention, it can be seen that compared with the prior art, the various embodiments of the present invention have the following beneficial effects:

[0016] In the first technical solution and related embodiments, the switching valve realizes the control and switching of multiple water channels (at least two) through the valve stem and retainer design, ensuring that at any time, only one valve stem can be in an active state, avoiding the potential risk of multiple water channels being opened at the same time. Specifically, when the operator selectively presses any valve stem, the abutment on the valve stem will cooperate with the inclined surface of the through hole wall on the retainer, driving the retainer to move perpendicular to the direction of movement of the valve stem, temporarily giving way from the holding position to the reset position, providing sufficient space for the pressed valve stem to move from the initial position to the functional position along the first direction, thereby opening the corresponding water channel. During this process, after the retainer completes the giving way action, the first elastic member quickly pushes the retainer back to the holding position through its elastic force, and also ensures that the retainer can abut against the abutment of the valve stem, effectively preventing the activated valve stem from automatically returning to the initial position due to the action of the second elastic member after the external force is removed, thereby maintaining the open state of the water channel. If an operator attempts to press any other valve stem while one of the valve stems is already active, the retainer will respond and slide vertically again, moving the activated valve stem upward and resetting it, while providing space for the newly pressed valve stem to move downward and activate. The retainer then returns to its holding position, preventing the newly activated valve stem from moving upward. This ensures that only one valve stem is always active during the entire switching process, enabling control of multiple waterways.

[0017] In the second technical solution and related embodiments, the switching valve further enhances the safety of the system by introducing an interlocking part and its lever structure. The interlocking part is rotatably connected to the valve body to form a lever, and its two ends act on the two valve stems in the corresponding valve stem group respectively, utilizing the lever principle to realize the mutual restriction of the motion state of the two valve stems inside the valve stem group. Specifically, when the operator tries to press the two valve stems in the valve stem group at the same time, the lever structure of the interlocking part will respond immediately, and through the interaction force at its two ends, it prevents the two valve stems from being pressed down at the same time, avoiding the simultaneous activation of multiple valve stems due to misoperation, and preventing the potential risk of multiple water channels being opened at the same time. In addition, the introduction of the interlocking part also strengthens the interlocking function of the switching valve, ensuring that at any time, only one water channel in the system can be in the open state.

[0018] In the third technical solution and related embodiments, the locking portion serves as a direct point of action between the valve stem and the interlocking member, allowing the pressing action of the valve stem to be transmitted to the interlocking member, effectively preventing the other valve stems from being pressed down at the same time. When either end of the interlocking member acts on the locking portion of the valve stem, the other end remains in a state of not contacting the locking portion of the other valve stem of the valve stem group, and there is a certain distance between the two. Specifically, when a valve stem is pressed and activated by moving downward in a first direction, its locking portion pushes the interlocking member to tilt, causing one end of the interlocking member to sink due to the force, while the other end is relatively raised, forming a state in which one end is low and the other end is high, and at this time, a preset distance is maintained between the raised end and the locking portion of the other inactivated valve stem. In this state, if you try to press the other valve stem, its locking portion needs to press against the retaining member before contacting the raised end to make it move, causing the activated valve stem to move upward and reset.

[0019] In the fourth technical solution and related embodiments, when the valve stem is pressed by an external force, because the locking portion is located above the abutment portion, the abutment portion first engages with the inclined surface of the hole wall of the retaining member through-hole, activating the sliding mechanism of the valve stem and allowing it to move downward in the first direction. Subsequently, as the valve stem moves further downward, the locking portion contacts one end of the interlocking member, thus preventing activation of the valve stem.

[0020] In the fifth technical solution and related embodiments, the locking portion and the abutting portion are arranged to protrude from the valve stem in different directions, ensuring that the locking portion acts on the interlocking part and the abutting portion acts on the retaining part, and the two effects do not interfere with each other.

[0021] In the sixth technical solution and related embodiments, the retaining member is driven to move and give way through the cooperation of the inclined surfaces of the first inclined surface and the second inclined surface, guiding the abutting portion of the valve stem to pass through the through hole of the retaining member along the first direction.

[0022] In the seventh technical solution and related embodiments, when the valve stem is pressed and activated, the retaining member will be reset under the action of the first elastic member, but at this time due to the presence of the abutment surface, it will abut the lower position of the retaining member along the first direction, preventing the valve stem from moving up and resetting along the first direction after the external force is removed.

[0023] In the eighth technical solution and related embodiments, the first guide surface guides the abutting portion of the valve stem to slide smoothly upward along the first direction when the abutting surface is out of contact with the retaining member; the second guide surface guides the abutting portion of the valve stem to slide smoothly downward along the first direction after the first inclined surface of the abutting portion cooperates with the second inclined surface of the retaining member.

[0024] In the ninth technical solution and related embodiments, the second inclined surface is arranged on a side close to the first elastic member, and the first inclined surface of the abutment portion cooperates with the second inclined surface of the retaining member to move the retaining member from the retaining position to the reset position close to the first elastic member.

[0025] In the tenth technical solution and related embodiments, the switching valve is suitable for more than two water channels. The preferred number of water channels in this embodiment is three, and the number of corresponding valve stems, first elastic parts, second elastic parts, and interlocking parts corresponds to the number of water channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is an exploded schematic diagram of the switching valve in Example 1;

[0028] Figure 2 This is a schematic diagram of the switching valve structure in Example 1;

[0029] Figure 3 This is a schematic diagram of the valve stem structure of Example 1;

[0030] Figure 4 This is a top view of the switching valve in Example 1;

[0031] Figure 5 for Figure 4 Middle AA section view;

[0032] Figure 6 for Figure 4 Middle BB section view;

[0033] Figure 7 for Figure 4 Middle CC section view;

[0034] Figure 8 This is a schematic diagram of the switching valve structure of Example 2;

[0035] Figure 9 This is a cross-sectional view of the switching valve of Example 2.

[0036] Description of main reference numerals:

[0037] Valve stem 1; retaining member 2; interlocking member 3; button 4; water diversion body 5; first elastic member 6; second elastic member 7; water inlet body 8; first sealing ring 9; screw 10; pin 11; locking portion 12; abutment portion 13; first inclined surface 14; abutment surface 15; first introduction surface 16; second introduction surface 17; sealing member 18; second sealing ring 19; through hole 20; water inlet 21; valve stem hole 22; second inclined surface 23. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is to distinguish different objects rather than to describe a specific order.

[0040] In the claims, specification and the above-mentioned drawings of the present utility model, unless otherwise expressly defined, directional words, such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present utility model.

[0041] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixed connection" are used, they should be understood in a broad sense, that is, any connection method without any displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0042] In the claims, description and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0043] Example 1

[0044] See also Figures 1 to 7 ,like Figure 1 As shown, a switching valve includes a valve body, a valve stem 1, a retaining member 2, a first elastic member 6, a second elastic member 7, and an interlocking member 3. In this embodiment, the valve body and retaining member 2 are configured to extend in a horizontal direction (second direction). The first direction (x), second direction (y), and third direction (z) described below are perpendicular to each other.

[0045] Valve body, such as Figure 1 and Figure 2As shown, it has at least two water channels that are independent of each other and can be fluidically connected. Specifically, the valve body includes a water diversion body 5 and a water inlet body 8. There are at least two independently set water channels in the water diversion body 5. Each water channel is provided with an inlet and an outlet. Each water channel runs through the valve body for the passage of fluid. The water inlet body 8 introduces the external water source into the valve body and is fixed by screws 10 to form an integral structure. Specifically, screw holes are provided around each water channel for screws to connect the water inlet body 8 and the water diversion body 5 to ensure that the water inlet body 8 and the water diversion body 5 are tightly connected. Figures 4 to 6 As shown, a first sealing ring 9 is installed on the connection interface between them to ensure the sealing between the two. During the connection process, the water outlet of the water inlet 8 is connected with the inlet of each waterway in the water diversion body 5, ensuring that the water source can enter each waterway and realize the connectivity of the waterways. The water inlet 8 is provided with a water inlet 21 to provide a fluid inlet for each waterway. Figure 1 As shown, the valve body is provided with valve stem holes corresponding to the water channels, through which valve stem 1 passes. Valve stem 1 mechanically controls the opening and closing of the water channel. When the valve stem is open, it allows fluid to pass through the water channel; when the valve stem is closed, it effectively blocks the flow of water, achieving fluid flow regulation. This switching valve is suitable for use with more than two water channels. In this embodiment, the valve body preferably has three water channels, and the number of corresponding valve stems 1, second elastic members 7, and interlocking members 3 corresponds to the number of water channels.

[0046] Valve stem 1, such as Figure 3 As shown, it is arranged corresponding to the water channel and includes an abutment portion 13 protruding in a second direction and a locking portion 12 protruding in a third direction perpendicular to the first direction. The locking portion and the abutment portion protrude from the valve stem in different directions, ensuring that the locking portion interacts with the interlocking member and the abutment portion interacts with the retaining member, without interfering with each other. The valve stem 1 moves relative to the valve body along a first direction between an initial position and a functional position. The first direction is a vertical direction perpendicular to the horizontal direction. Specifically, the number of valve stems 1 is equal to the number of water channels, meaning one valve stem 1 is provided for each water channel. The locking portion 12 is located above the abutment portion 13 along the first direction. The abutment portion 13 includes a first inclined surface 14, an abutment surface 15 extending upward in the first direction, and first and second integrally connected inlet surfaces 16 and 17. The first inlet surface 16 connects to the abutment surface 15, and the second inlet surface 17 connects to the first inclined surface 14. The first inlet surface 16 tilts upward in the first direction, while the second inlet surface 17 tilts downward in the first direction. The first introduction surface 16 and the second introduction surface 17 serve as auxiliary guide surfaces for the first inclined surface 14 and the abutment surface 15 to pass through the holder 2 , respectively.

[0047] like Figure 1 and Figure 2 As shown, the top of the valve stem 1 along the first direction is provided with a button 4 for the operator to press. Figure 3As shown, a plurality of sealing members 18 are arranged at intervals along the first direction below the valve stem 1. These sealing members 18 are designed with installation positions for assembling the second sealing ring 19. Figure 5 As shown, this ensures effective sealing between the valve stem 1 and the valve stem holes on the water diversion body 5 and the water inlet body 8.

[0048] Holder 2, such as Figure 1 and Figure 2 As shown, it moves perpendicularly to the first direction relative to the valve body between the holding position and the reset position, and the retaining member 2 is provided with a through hole 20 corresponding to the valve stem 1. Specifically, as Figure 1 As shown, the retainer 2 is long and narrow, and is limited to the valve body along a first direction by a screw 10, but is suitable for sliding connection with the valve body in a direction perpendicular to the first direction. The retainer 2 is provided with a plurality of through holes 20 distributed along a direction perpendicular to the first direction, and the through holes 20 are through holes for the valve stem 1 to pass through. The hole wall of the through hole 20 is provided with a second inclined surface 23 that matches the first inclined surface 14 of the valve stem 1. Figures 4 to 6 As shown, the valve stem 1 passes through the through hole 20 in a first direction. When the valve stem 1 moves from the initial position to the functional position, the abutment portion 13 cooperates with the inclined surface of the hole wall of the through hole 20 to move the retainer 2 from the retaining position to the reset position. Specifically, the first inclined surface 14 of the abutment portion 13 and the second inclined surface 23 of the hole wall of the through hole 20 drive the retainer 2 to move through the inclined surface cooperation.

[0049] In this embodiment, the first introduction surface 16 is connected to the abutting surface 15, providing a guide path for the abutting portion 13 to guide the abutting portion 13 upward through the through hole 20 along the first direction. The second introduction surface 17 is connected to the first inclined surface 14, and plays a guiding role after the abutting portion 13 and the second inclined surface 23 of the hole wall of the through hole 20 are matched with each other, so that the abutting portion 13 passes through the through hole 20 downward along the first direction. The first elastic member 6, such as Figure 1 、 Figures 5 to 7As shown, it is placed between the valve body and the retaining member 2 to push the retaining member 2 from the reset position to the holding position after the abutment portion 13 passes through the through hole 20 from the initial position. The retaining member 2 abuts the abutment portion 13 along the first direction in the holding position to prevent the valve stem 1 from resetting to the initial position. Specifically, the first elastic member 6 is a spring, and the side wall of the retaining body is provided with a first mounting groove for the installation of the first elastic member 6. One end of the first elastic member 6 abuts the bottom of the first mounting groove, and the other end abuts the side wall of the valve body perpendicular to the first direction. The first elastic member 6 pushes the retaining member 2 from the reset position to the holding position, and abuts the abutment portion 13 of the valve stem 1 in the functional position to prevent it from resetting. In this embodiment, after the abutment portion 13 passes through the through hole 20 from the initial position, the retaining member 2 abuts the abutment surface 15 along the first direction in the holding position to prevent the valve stem 1 from returning to the initial position from the functional position. When the valve stem 1 is pressed and activated, the retaining member 2 will be reset under the action of the first elastic member 6, but at this time due to the presence of the abutment surface 15, it will abut against the lower position of the retaining member 2 along the first direction, preventing the valve stem 1 from moving up and resetting in the first direction after the external force is removed.

[0050] In this embodiment, the second inclined surface 23 is provided on a side close to the first elastic member 6. The first inclined surface 14 of the contact portion 13 cooperates with the second inclined surface 23 of the retaining member 2 to move the retaining member 2 from the retaining position to the reset position close to the first elastic member 6.

[0051] The second elastic member 7, such as Figure 1 and Figure 5 As shown, the corresponding valve stem 1 is disposed and positioned between the valve body and the corresponding valve stem 1. When the retaining member 2 moves from the retaining position to the reset position, the second elastic member 7 pushes the valve stem 1, which is in the functional position, from the functional position to the initial position. Specifically, the second elastic member 7 is a spring. The bottom of the valve stem 1 is provided with a second mounting groove for mounting the second elastic member 7. One end of the second elastic member 7 abuts the bottom of the second mounting groove, and the other end abuts the bottom of the valve body along the first direction. When the retaining member 2 moves from the retaining position to the reset position, the second elastic member 7 pushes the valve stem 1, which is in the functional position, back to the initial position.

[0052] When one valve stem 1 is already in the functional position, if any other valve stem 1 is pressed, the retaining member 2 slides to the reset position again, moving the valve stem 1 in the functional position upward and resetting it, while providing space for the newly pressed valve stem 1 to move downward; under the action of the first elastic member 6, the retaining member 2 is reset to the retaining position again, and prevents the valve stem 1 in the new functional position from moving upward.

[0053] Interlocking piece 3, such as Figure 1 、 Figure 6 and Figure 7As shown, interlocking members 3 are provided corresponding to the valve stem assemblies, with one interlocking member 3 provided for each valve stem assembly. The interlocking member 3 is rotatably connected to the valve body and forms a lever. The two ends of the lever act on the two valve stems 1 in the corresponding valve stem assembly, preventing both valve stems 1 in the corresponding valve stem assembly from moving simultaneously from their initial positions to their functional positions. Specifically, the center of the interlocking member 3 is rotatably connected to the valve body via a pin 11, forming a lever structure with the rotation axis as the fulcrum. The two ends of the interlocking member 3 act on the locking portions 12 of the two valve stems 1 in the corresponding valve stem assembly. In this embodiment, any two valve stems 1 form a valve stem assembly. To achieve the interlocking function between the valve stems 1, the concept of a valve stem assembly is established. Specifically, although the valve body in this embodiment is provided with three valve stems 1, the valve stem assembly is not directly divided according to these three valve stems 1. Instead, any two valve stems 1 can form a valve stem assembly. That is, each valve stem 1 forms two valve stem assemblies with the other two valve stems 1, meaning that each valve stem 1 is part of two different valve stem assemblies. For these three valve stems 1, the configuration of the interlocking piece 3 can be understood as follows: each valve stem 1 is equipped with one end of an interlocking piece 3, and the other end of this interlocking piece 3 acts on another valve stem 1 that is not in the same group as the current valve stem 1. Since there are three valve stems 1, it can be imagined that there are three interlocking pieces 3, each of which spans two valve stems 1 to form a lever structure, ensuring that the two valve stems 1 cannot be activated at the same time.

[0054] When one valve stem 1 of the valve stem assembly is in the functional position, one end of the interlocking member 3's lever acts on the locking portion 12 of that valve stem 1, while the other end remains free from contact with the locking portion 12 of the other valve stem 1 of the valve stem assembly. In this embodiment, after either end of the interlocking member 3 acts on the locking portion 12 of a valve stem 1, the other end has not yet contacted the locking portion 12 of the other valve stem 1 of the valve stem assembly, leaving a certain distance between them. Specifically, when one valve stem 1 is pressed and activated by moving downward in a first direction, its locking portion 12 pushes the interlocking member 3 to tilt, causing one end of the interlocking member 3 to sink due to the force, while the other end is relatively raised, resulting in a state where one end is lower than the other. At this point, a predetermined distance is maintained between the raised end and the locking portion 12 of the other, inactive valve stem 1. In this state, if an attempt is made to press the other valve stem 1, its locking portion 12 must first contact the raised end before its abutment portion 13 contacts the retaining member 2, causing it to move, thus causing the activated valve stem 1 to move upward and return to its original position.

[0055] In this embodiment, the switching valve further enhances the safety of the system by introducing an interlocking member 3 and its lever structure. The interlocking member 3 is rotatably connected to the valve body to form a lever, and its two ends act on the two valve stems 1 in the corresponding valve stem group respectively, utilizing the lever principle to realize the mutual restriction of the motion state of the two valve stems 1 inside the valve stem group. Specifically, when the operator tries to press the two valve stems 1 in the valve stem group at the same time, the lever structure of the interlocking member 3 will respond immediately, and through the interaction force at its two ends, it prevents the two valve stems 1 from being pressed down at the same time, avoiding the simultaneous activation of multiple valve stems 1 due to misoperation, and preventing the potential risk of multiple water channels being opened at the same time. In addition, the introduction of the interlocking member 3 also strengthens the interlocking function of the switching valve, ensuring that at any time, only one water channel in the system can be in the open state.

[0056] In this embodiment, when the valve stem 1 is pressed by an external force, since the locking portion 12 is located above the abutment portion 13, the abutment portion 13 will first engage with the inclined surface of the hole wall of the through hole 20 of the retainer 2, activating the sliding mechanism of the valve stem 1 and allowing it to move downward in the first direction. Subsequently, as the valve stem 1 moves further downward, the locking portion 12 will contact one end of the interlocking member 3, which will not affect the activation of the valve stem 1.

[0057] In this embodiment, the locking portion 12 protrudes from the valve stem 1 along a third direction perpendicular to the first direction, and the abutting portion 13 protrudes from the valve stem 1 along a second direction. The locking portion and the abutting portion are arranged to protrude from the valve stem in different directions, ensuring that the locking portion acts on the interlocking member and the abutting portion acts on the retaining member, without interfering with each other.

[0058] In this embodiment, the switching valve, through the design of the valve stem 1 and the retaining member 2, realizes the control and switching of multiple water channels (at least two), ensuring that at any time, only one valve stem 1 can be in the active state, avoiding the potential risk of multiple water channels being opened simultaneously. Specifically, when the operator selectively presses any valve stem 1, the abutment 13 on the valve stem 1 will cooperate with the inclined surface of the through hole 20 on the retaining member 2, driving the retaining member 2 to move perpendicular to the movement direction of the valve stem 1, temporarily giving way from the holding position to the reset position, providing sufficient space for the pressed valve stem 1 to move from the initial position to the functional position along the first direction, thereby opening the corresponding water channel. During this process, after the retaining member 2 completes the giving way action, the first elastic member 6 quickly pushes the retaining member 2 back to the holding position through its elastic force, and also ensures that the retaining member 2 can abut against the abutment 13 of the valve stem 1, effectively preventing the activated valve stem 1 from automatically returning to the initial position due to the action of the second elastic member 7 after the external force is removed, thereby maintaining the open state of the water channel. When one valve stem 1 is already active in the system, if the operator attempts to press another valve stem 1, the retainer 2 will respond again and slide vertically, moving the activated valve stem 1 upward and resetting it, while providing space for the newly pressed valve stem 1 to move downward and activate. Subsequently, the retainer 2 returns to the holding position again, preventing the newly activated valve stem 1 from moving upward, ensuring that only one valve stem 1 is always active during the entire switching process, thus achieving control of multiple waterways.

[0059] Example 2

[0060] like Figure 8 and Figure 9 As shown, this embodiment differs from the first embodiment in that the valve body and retainer 2 are both circular, with the valve stem 1 evenly distributed along the circumference. The retainer 2 rotates perpendicularly to the first direction relative to the valve body between a retaining position and a reset position. The principle is the same as in the first embodiment and will not be repeated here.

[0061] The above description and embodiments are used to explain the scope of protection of the utility model, but do not constitute a limitation on the scope of protection of the utility model. Based on the enlightenment of the utility model or the above embodiments, modifications, equivalent replacements, or other improvements to the embodiments of the utility model or part of the technical features thereof that can be obtained by ordinary technicians in this field through logical analysis, reasoning, or limited experiments in combination with common knowledge, ordinary technical knowledge in this field and / or existing technology should be included in the scope of protection of the utility model.

Claims

1. A switching valve, comprising: a valve body having at least two water channels which are independent of each other and can be in fluid communication; A valve stem (1) is arranged corresponding to the water channel and at least partially arranged in the water channel, the valve stem is provided with an abutment portion (13), and the valve stem (1) moves relative to the valve body along a first direction between an initial position and a functional position; A retaining member (2) moves relative to the valve body in a second direction perpendicular to the first direction between a retaining position and a reset position, the retaining member (2) is provided with a through hole (20) corresponding to the valve stem (1), the valve stem (1) passes through the through hole (20) along the first direction, and the abutting portion (13) cooperates with the inclined surface of the hole wall of the through hole (20) when the valve stem (1) moves from the initial position to the functional position to enable the retaining member (2) to move from the retaining position to the reset position; a first elastic member (6) disposed between the valve body and the retaining member (2) to push the retaining member (2) from the reset position to the retaining position after the abutting portion (13) passes through the through hole (20) from the initial position, wherein the retaining member (2) abuts against the abutting portion (13) in a first direction at the retaining position to prevent the valve stem (1) from returning to the initial position after the external force is removed; and a second elastic member (7) provided corresponding to the valve stem (1) and disposed between the valve body and the corresponding valve stem (1); the second elastic member (7) pushing the valve stem (1) in the functional position to move from the functional position to the initial position when the retaining member (2) moves from the retaining position to the reset position; When one valve stem (1) is already in the functional position, if any other valve stem (1) is pressed, the retaining member (2) slides to the reset position again, moving the valve stem (1) in the functional position upward and resetting it, while providing space for the newly pressed valve stem (1) to move downward in the first direction; under the action of the first elastic member (6), the retaining member (2) is reset to the retaining position again, and prevents the valve stem (1) in the new functional position from moving upward in the first direction.

2. A switching valve according to claim 1, characterized in that: It also includes an interlocking part (3); any two valve stems (1) form a valve stem group, and each valve stem group is correspondingly provided with an interlocking part (3), the interlocking part (3) is rotatably connected to the valve body and forms a lever, and the two ends of the lever act on the two valve stems (1) in the corresponding valve stem group respectively, so that the two valve stems (1) in the corresponding valve stem group cannot move from the initial position to the functional position at the same time.

3. A switching valve according to claim 2, characterized in that: The valve stem (1) is provided with a radially protruding locking portion (12), and the two ends of the interlocking member (3) respectively act on the locking portions (12) of the two valve stems (1) in the corresponding valve stem group; when one of the valve stems (1) of the valve stem group is in the functional position, one end of the lever of the interlocking member (3) is close to the locking portion (12) of the valve stem (1), and the other end remains in a non-contact state with the locking portion (12) of the other valve stem (1) of the valve stem group.

4. A switching valve according to claim 3, characterized in that: The locking portion (12) is located above the abutting portion (13) along the first direction.

5. A switching valve according to claim 4, characterized in that: The locking portion (12) protrudes from the valve stem (1) along a third direction perpendicular to the first direction, and the abutting portion (13) protrudes from the valve stem (1) along a second direction.

6. A switching valve according to claim 1, characterized in that: The abutting portion (13) is provided with a first inclined surface (14), and the hole wall of the through hole (20) is provided with a second inclined surface (23) matching the first inclined surface (14), and the two drive the retaining member (2) to move through the inclined surface matching.

7. A switching valve according to claim 6, characterized in that: The abutment portion (13) is further provided with an abutment surface (15) pointing upward in a first direction. After the abutment portion (13) passes through the through hole (20) from an initial position, the retaining member (2) abuts against the abutment surface (15) in the first direction at the retaining position to prevent the valve stem (1) from returning to the initial position from the functional position.

8. A switching valve according to claim 7, characterized in that: The abutting portion (13) is further provided with a first introduction surface (16) and a second introduction surface (17) which are connected as one body. The first introduction surface (16) is connected to the abutting surface (15) to guide the abutting portion (13) to pass through the through hole (20) upward in the first direction; and the second introduction surface (17) is connected to the first inclined surface (14) to allow the abutting portion (13) to pass through the through hole (20) downward in the first direction.

9. The switching valve according to claim 6, wherein: The second inclined surface (23) is arranged on a side close to the first elastic member (6).

10. A switching valve according to any one of claims 1 to 9, characterized in that: The valve body has three water channels.

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