Self-resetting structure, flow change-over switch and water outlet device

Abstract

The invention provides a self-resetting structure, a flow change-over switch and a water discharge.The self-resetting structure comprises a mounting cavity, a change-over rod, a sealing ring and an elastic part, the sealing ring is arranged on the outer ring of a plug of the change-over rod in a sleeving mode, an annular skirt edge is arranged on the outer ring of the sealing ring, and the skirt edge is elastic and can be bent when being extruded; and meanwhile, the bent part can also be attached to and extrude the surface to form surface contact type sealing. The sealing ring with the skirt edge is adopted, when the state is switched and the sealing ring is close to the conical opening, the sealing ring can be deformed into a conical state through pushing of the conical opening and is tightly attached to the conical opening, so that a surface contact type sealing structure is formed between the sealing ring and the conical opening, the sealing performance is high, in addition, the sealing ring is prevented from being extruded into an oval shape to achieve sealing, and the sealing effect is good. Therefore, the friction force between the sealing ring or the switching rod and the conical opening can be greatly reduced, and the resetting action is smooth.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen and bathroom, and in particular to a self-resetting structure, a flow switching switch, and a water outlet device. Background Art

[0002] The self-resetting switch structure is widely used in water outlet devices. Generally, it includes a switching rod and an elastic member installed in an installation cavity. A plug with an O-ring is provided at the end of the switching rod. By pressing, the plug can compress the elastic member and block a stepped channel at the end of the installation cavity. When the water is turned off, the plug is reset under the action of the elastic member. The existing self-resetting structure has the following problems: 1. The plug uses an O-ring. The O-ring deforms by extrusion between the opening of the stepped channel, and then forms a seal. This sealing structure requires the plug to enter the stepped channel to a greater depth so that the O-ring can be fully deformed. However, when the water is turned off, if the elastic force of the elastic member is insufficient or the friction between the O-ring and the stepped channel bracket is too large, the reset will fail; 2. When the water pressure is small, the switching failure is likely to occur; 3. The stepped channel must be provided with a pressure relief hole or a drainage channel. Otherwise, when the plug blocks the stepped channel, there will be air retention in the stepped channel, resulting in poor sealing of the blockage, and then leading to switching failure or premature reset. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a self-resetting structure with good sealing effect and smooth automatic reset action.

[0004] In a first aspect, a self-resetting structure is provided, including an installation cavity, a switching rod, a sealing ring, and an elastic member, wherein, One end of the installation cavity is provided with an installation port, a first water inlet is provided in the middle, and a first inner cavity is formed at the other end, and a first tapered port facing the installation port is provided.

[0005] The switching rod is telescopically installed in the installation cavity, and one end with the plug is installed in the installation cavity, and the other end extends out of the installation port and forms a pressing end for the user to press.

[0006] The sealing ring is sleeved on the outer circle of the plug, and an annular skirt is provided on the outer circle of the sealing ring. The skirt has elasticity and will bend when being squeezed. At the same time, the bent part will also fit the surface that squeezes it and form a surface contact type seal.

[0007] The elastic member is pre-tightened and installed between the switching rod and the installation cavity, and provides an elastic force for the plug to move towards the installation port through its tendency to restore deformation.

[0008] The switching rod includes a first state and a second state: in the first state, the plug is away from the first tapered opening under the elastic force of the elastic member. The switching rod is switched from the first state to the second state by being pressed. At this time, the plug overcomes the elastic force of the elastic member and seals the first tapered opening, and the skirt is bent into a cone under the pushing action of the first tapered opening and fits with the tapered surface of the first tapered opening, thereby closing the first tapered opening. If the first water inlet is in the water passing state, the axial thrust force formed by the water pressure on the switching rod and the sealing ring is balanced with the elastic force, so that the second state can be effectively maintained. In addition, since the water pressure also provides a radial force to the skirt formed into a cone, the skirt fits more closely with the first tapered opening, and further the sealing effect of the plug on the first tapered opening is better. When the water supply is cut off, the hydraulic force is removed, and the switching rod returns to the first state by the elastic force. At this time, the first tapered opening is opened.

[0009] Preferably, to improve the smoothness of automatically returning to the first state when the water supply is cut off, the outer diameters of the plug and the main body part of the sealing ring are equal to the diameter of the first inner cavity, which can reduce the friction between the switching rod and the installation cavity during the recovery process. In addition, when switching to the second state, the plug and the main body part of the sealing ring pass through the first tapered opening and partially enter the first inner cavity in the second state, so that the smaller-diameter opening in the first tapered opening can bend it at the root of the skirt, and the skirt and the first tapered opening have more contact area, thereby forming a better sealing effect.

[0010] Preferably, to improve the installation stability of the sealing ring, an annular groove is provided on the outer ring of the plug, and the sealing ring is sleeved in the annular groove.

[0011] Preferably, the only communication hole between the first inner cavity and the outside is the first tapered opening, and there is no need to additionally open a pressure relief hole, which is easy to form. When switching to the second state, when the plug gradually seals the first tapered opening, since the first inner cavity forms a sealed cavity and the pressure inside is too high, the air or water inside can be discharged to the outside of the first tapered opening by pushing open the skirt, achieving a pressure relief effect.

[0012] Preferably, the elastic member is a spring.

[0013] Preferably, the spring is compressively installed between the end of the plug and the end of the installation cavity, which is easy to assemble, and the assembled structure is simple and easy to form.

[0014] Preferably, to improve the stability of the spring during use, a receiving groove is provided at the end of the plug, and one end of the spring is inserted into the receiving groove. A convex column is provided at the end of the first inner cavity, and the other end of the spring is sleeved outside the convex column.

[0015] In a second aspect, a flow switching switch is provided, which adopts the self-resetting structure described in the first aspect. A second water inlet and a water outlet are further provided on the periphery of the installation cavity of the self-resetting structure. The second water inlet is located between the installation port and the first water inlet, and a second conical opening is further provided between the inner ring of the installation cavity and the first water inlet and the second water inlet. The contour of the second conical opening is the same as and opposite to that of the first conical opening. The water outlet is arranged between the first conical opening and the second conical opening. In the first state, the water outlet is communicated with the first water inlet. In the second state, the water outlet is communicated with the first water inlet and the second water inlet at the same time.

[0016] Preferably, a throttle piece is installed in the first water inlet, which can effectively reduce the water inflow of the first water inlet, so that when the first water inlet discharges water alone, the water output of the water outlet device more conforms to the international water output standard.

[0017] In a third aspect, a water outlet device is provided, which adopts the self-resetting structure described in the first aspect, or adopts the flow switching switch described in the second aspect.

[0018] Preferably, the water outlet device is sequentially provided with a flow switching switch, a first water outlet switching switch and a second water outlet switching switch, and has rich water outlet modes. Specifically: the water outlet device switches the water output through the flow switching switch, switches the spray gun water or the sprinkler water through the first water outlet switching switch, and the sprinkler water switches the bubble water or the ordinary sprinkler water through the second water outlet switching switch.

[0019] As can be seen from the above description of the present invention, the present invention has the following beneficial effects: By adopting the sealing ring with a skirt, when switching states and approaching the conical opening, it can be deformed into a conical state by the top push of the conical opening and closely adhere to the conical opening, so as to form a surface contact sealing structure with the conical opening, with high sealing performance, which can effectively maintain the current water outlet state. In addition, it avoids realizing the seal by squeezing the sealing ring into an elliptical shape, so that the friction force between the sealing ring or the switching rod and the conical opening can be greatly reduced. When the water supply is cut off, the reset action of the switching rod will be very smooth; Under the hydraulic action, the skirt will fit more closely with the conical opening, and further the sealing effect of the conical opening is better in the water passing state, which is more beneficial to maintaining the current water outlet state; The only communication hole between the first inner cavity and the outside is the first conical opening, and there is no need to additionally open a pressure relief hole, which is easy to form; By arranging two water inlets and two conical openings in the installation cavity, the flow switching function and the function of automatically restoring the smaller water outlet state can be realized. Description of the Drawings

[0020] The accompanying drawings described herein are used to provide a further understanding of the present invention and form a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0021] Wherein: Figure 1 is an axonometric view of the self-resetting structure and the flow switching switch Figure 1 ; Figure 2 is an exploded view of the self-resetting structure and the flow switching switch Figure 1 ; Figure 3 is an exploded view of the self-resetting structure and the flow switching switch Figure 2 ; Figure 4 is an exploded view of the self-resetting structure and the flow switching switch Figure 3 ; Figure 5 is a schematic view of the first state of the self-resetting structure and the flow switching switch Figure 1 ; Figure 6 is a schematic view of the first state of the self-resetting structure and the flow switching switch Figure 2 ; Figure 7 is a schematic view of the second state of the self-resetting structure and the flow switching switch Figure 1 ; Figure 8 is a schematic view of the second state of the self-resetting structure and the flow switching switch Figure 2 Figure 9 is an axonometric view of a water outlet device; Figure 10 is a front view of a water outlet device; Figure 11 is a sectional view of a water outlet device; Figure 12 is about Figure 7 a partial enlarged view of A; Figures 1 to 12 The identifications in are respectively: installation cavity 1, installation opening 11, first water inlet 12, first inner cavity 13, first tapered opening 14, second water inlet 15, water outlet 16, second tapered opening 17, throttle piece 18, switching rod 2, plug 21, sealing ring 3, skirt 31, elastic member 4, flow switching switch 5, first water outlet switching switch 6, second water outlet switching switch 7. Specific embodiments

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Please refer to Figures 1 to 9 , a self-resetting structure, including an installation cavity 1, a switching rod 2, a sealing ring 3 and an elastic member 4. Among them, One end of the installation cavity 1 is provided with an installation port 11, the middle part is provided with a first water inlet 12, the other end forms a first inner cavity 13 inside, and is provided with a first tapered opening 14 facing the installation port 11.

[0024] The switching rod 2 is telescopically installed in the installation cavity 1, and one end with a plug 21 is installed in the installation cavity 1, and the other end extends out of the installation port 11 and forms a pressing end for the user to press. To ensure the sealing effect, a sealing structure is provided between the periphery of the pressing end and the installation port 11, and preferably a Y-shaped sealing ring 3 is installed.

[0025] The sealing ring 3 is sleeved on the outer circle of the plug 21. Preferably, to improve the installation stability of the sealing ring 3, a circular groove is provided on the outer circle of the plug 21, and the sealing ring 3 is sleeved in the circular groove. The outer circle of the sealing ring 3 is provided with an annular skirt 31, and the skirt 31 has elasticity and will bend when being squeezed. At the same time, the bent part will also fit the surface that squeezes it and form a surface-contact seal.

[0026] The elastic member 4 is pre-tightened and installed between the switching rod 2 and the installation cavity 1, and provides an elastic force for the plug 21 to move towards the installation port 11 through its tendency to recover deformation. Preferably, the elastic member 4 is a spring, which is compressively installed between the end of the plug 21 and the end of the installation cavity 1, is easy to assemble, and the assembled structure is simple and easy to form. Further, to improve the stability of the spring during use, a receiving groove is provided at the end of the plug 21, and one end of the spring is inserted into the receiving groove. A convex column is provided at the end of the first inner cavity 13, and the other end of the spring is sleeved outside the convex column.

[0027] The switching rod 2 includes a first state and a second state: In the first state, the plug 21 moves away from the first tapered opening 14 under the elastic force of the elastic member 4.

[0028] The switching rod 2 is switched from the first state to the second state by being pressed. At this time, the plug 21 overcomes the elastic force of the elastic member 4 and seals the first tapered opening 14, and the skirt 31 is bent into a tapered shape under the pushing action of the first tapered opening 14 and fits with the tapered surface of the first tapered opening 14, thereby closing the first tapered opening 14. If the first water inlet 12 is in the water passing state, the axial pushing force formed by the water pressure on the switching rod 2 and the sealing ring 3 is balanced with the elastic force, so that the second state can be effectively maintained. In addition, since the water pressure also provides a radial force to the skirt 31 formed into a tapered shape, the skirt 31 fits more closely with the first tapered opening 14, and further the sealing effect of the plug 21 on the first tapered opening 14 is better. When the water is cut off, the hydraulic force is removed, and the switching rod 2 returns to the first state by the elastic force. At this time, the first tapered opening 14 is opened.

[0029] In one embodiment, in order to improve the smoothness of automatically returning to the first state when the water is cut off, the outer diameters of the main parts of the plug 21 and the sealing ring 3 are equal to the diameter of the first inner cavity 13, which can reduce the friction between the switching rod 2 and the installation cavity 1 during the recovery process. In addition, when switching to the second state, the main parts of the plug 21 and the sealing ring 3 pass through the first tapered opening 14 and partially enter the first inner cavity 13 in the second state, so that the smaller-diameter opening in the first tapered opening 14 can bend the root of the skirt 31, so that the skirt 31 and the first tapered opening 14 have more contact area, thereby forming a better sealing effect. Please refer to Figure 12 , in the second state, the water forms a pushing force F1 on the plug and a pushing force F2 on the skirt 31 of the sealing ring 3. Under the action of the pushing force F2, the skirt 31 will further fit with the tapered surface of the first tapered opening 14. At this time, the following effects will occur. When the water pressure is small or changes suddenly, the spring 4 has a tendency to push the plug 21 out. At this time, a static friction is formed between the skirt 31 and the tapered surface, and this frictional force helps to maintain the state of the plug 21, thereby reducing the influence of the decrease or sudden change of the water pressure and maintaining the current gear. When the water is turned off, the pushing force F2 is removed, and the tightness between the skirt 31 and the tapered surface is reduced, and then the frictional force is also reduced. Compared with the frictional force formed by the traditional sealing ring being extruded into an elliptical shape (this frictional force will not change even if the hydraulic force is removed), it can be reduced slightly, thereby improving the smoothness of the reset of the switching rod 2.

[0030] On the basis of the above embodiment, in one embodiment, the only communication hole between the first inner cavity 13 and the outside is the first tapered opening 14, and there is no need to additionally open a pressure relief hole, which is easy to form. When switching to the second state, when the plug 21 gradually seals the first tapered opening 14, since the first inner cavity 13 forms a sealed cavity and the pressure inside is too high, the air or water inside can be discharged to the outside of the first tapered opening 14 by pushing open the skirt 31 to achieve the pressure relief effect.

[0031] Please refer to Figures 1 to 9 , in one embodiment, a flow switching switch 5 is further provided, adopting the self-resetting structure described in the above embodiment. A second water inlet 15 and a water outlet 16 are further provided on the periphery of the installation cavity 1 of the self-resetting structure. The second water inlet 15 is located between the installation port 11 and the first water inlet 12, and a second tapered port 17 is further provided between the first water inlet 12 and the second water inlet 15 on the inner ring of the installation cavity 1. The contour of the second tapered port 17 is the same as and opposite to that of the first tapered port 14. The water outlet 16 is arranged between the first tapered port 14 and the second tapered port 17.

[0032] In the first state, the water outlet 16 is communicated with the first water inlet 12. Preferably, a throttle piece 18 is installed in the first water inlet 12, which can effectively reduce the water inflow of the first water inlet 12, so that when the first water inlet 12 discharges water alone, the water output of the water outlet device is more in line with the international water output standard.

[0033] In the second state, the water outlet 16 is communicated with both the first water inlet 12 and the second water inlet 15, and a larger water output can be formed.

[0034] Therefore, the flow switching switch 5 provided in this embodiment can adjust the flow rate by pressing the switching rod 2.

[0035] Please refer to Figures 1 to 11 , in one embodiment, a water outlet device is further provided, adopting the self-resetting structure or the flow switching switch 5 described in the above embodiment.

[0036] In a specific embodiment, the water outlet device is successively provided with a flow switching switch 5, a first water outlet switching switch 6 and a second water outlet switching switch 7, and has rich water outlet modes. Specifically: the water outlet device switches the water output through the flow switching switch 5, switches the spray gun water or the sprinkler water through the first water outlet switching switch 6, and the sprinkler water switches the bubble water or the ordinary sprinkler water through the second water outlet switching switch 7.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0038] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0039] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0041] In the present invention, terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0042] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and alterations made by those of ordinary skill in the art to the above embodiments are all within the protection scope of the present invention.

Claims

1. A self-resetting structure, characterized in that: It includes a mounting cavity, a switching rod, a sealing ring and an elastic member; The installation cavity is provided with an installation opening at one end, a first water inlet at the middle, and a first inner cavity is formed inside the other end, and a first conical opening is provided facing the installation opening; One end of the switching rod provided with a plug is installed in the installation cavity, and the other end is a pressing end extending out of the installation opening; The sealing ring is sleeved on the outer ring of the plug, and the outer ring of the sealing ring is provided with an annular skirt; The elastic member is pre-tightened and installed between the switching rod and the installation cavity, and provides elastic force for the plug to move toward the installation opening; The switching rod includes a first state and a second state; in the first state, the plug is away from the first conical mouth under the action of elastic force; the switching rod is switched from the first state to the second state by pressing, the plug overcomes the elastic force and blocks the first conical mouth, the skirt is deformed into a cone and fits with the conical surface of the first conical mouth, and when water flows through the first water inlet, the axial thrust of the water on the switching rod and the sealing ring is balanced with the elastic force, and when the water is cut off, the switching rod returns to the first state through the elastic force.

2. A self-resetting structure according to claim 1, characterized in that: The outer diameters of the plug and the main body of the sealing ring are equal to the diameter of the first inner cavity, and the plug and the main body of the sealing ring pass through the first tapered opening and partially enter the first inner cavity in the second state.

3. A self-resetting structure according to claim 1, characterized in that: The outer ring of the plug is provided with an annular groove, and the sealing ring is sleeved in the annular groove.

4. A self-resetting structure according to claim 1, characterized in that: The communicating hole between the first inner cavity and the outside has only a first tapered opening. In the second state, the first inner cavity forms a sealed cavity.

5. A self-resetting structure according to claim 1, characterized in that: The elastic member is a spring, and the spring is compressed and installed between the end of the plug and the end of the installation cavity.

6. A self-resetting structure according to claim 5, characterized in that: The end of the plug is provided with a receiving groove, and one end of the spring is inserted into the receiving groove; the end of the first inner cavity is provided with a convex column, and the other end of the spring is sleeved outside the convex column.

7. A flow switching switch, characterized in that: A self-resetting structure as described in any one of claims 1 to 6 is adopted; a second water inlet and a water outlet are also provided on the periphery of the mounting cavity of the self-resetting structure, the second water inlet is located between the mounting cavity and the first water inlet, and a second conical mouth is also provided on the inner circle of the mounting cavity between the first water inlet and the second water inlet, the contour of the second conical mouth is consistent with and opposite to the first conical mouth; the water outlet is arranged between the first conical mouth and the second conical mouth; in the first state, the water outlet is connected with the first water inlet, and in the second state, the water outlet is connected with the first water inlet and the second water inlet at the same time.

8. A flow switching switch according to claim 7, characterized in that: A throttling plate is installed in the first water inlet.

9. A water outlet, characterized in that: A self-resetting structure as described in any one of claims 1 to 6 is adopted, or a flow switching switch as described in claim 7 or 8 is adopted.

10. A water outlet according to claim 9, characterized in that: The water outlet is provided with a flow switching switch, a first water outlet switching switch and a second water outlet switching switch in sequence. The water outlet switches the water output through the flow switching switch, switches the spray gun water or the shower water through the first water outlet switching switch, and the shower water is switched to bubble water or ordinary shower water through the second water outlet switching switch.

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