Delayed water outlet valve and shower head using the same

Abstract

The present invention belongs to the technical field of water valves and discloses a delayed water outlet valve and a shower head using the same, wherein the delayed water outlet valve comprises: a shell having a first cavity provided therein, the first cavity being provided with a first water inlet and a water outlet; a first movable member is installed in the shell and can move between a first position blocking the first water inlet and a second position opening the first water inlet, a second cavity is provided on the first movable member, the second cavity being provided with a second water inlet connected to the first water inlet and a water outlet channel connected to the first cavity; a second movable member is installed in the second cavity and can move between a third position blocking the second water inlet and a fourth position opening the second water inlet; the delayed water outlet valve gradually transitions from a small displacement mode to a large displacement mode, thereby effectively delaying the water outlet time of the large displacement and having a warning effect during the initial water outlet.

Description

Technical Field

[0001] The present invention belongs to the technical field of water valves, and in particular relates to a delayed water outlet valve and a shower head using the same. Background Art

[0002] Most existing showerheads have multiple functions, and the water flow indicators are often unclear. When the faucet is turned on, the water flow may not be what the user wants. This is especially true for showerheads with both overhead and handheld functions. If the user intends to use the downspout function, the overhead or handheld function may be used incorrectly, which can easily cause splashing onto the user's body or clothing, creating a negative user experience. Summary of the Invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the present invention provides a time-delayed water outlet valve.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] The present invention also provides a shower head having the above-mentioned delayed water outlet valve.

[0006] The delayed water outlet valve according to the first embodiment of the present invention includes:

[0007] A shell having a first cavity therein, wherein the first cavity is provided with a first water inlet and a water outlet;

[0008] a first movable member, mounted in the housing and movable between a first position for blocking the first water inlet and a second position for opening the first water inlet, the first movable member being provided with a second cavity, the second cavity being provided with a second water inlet communicating with the first water inlet and a water outlet channel communicating with the first cavity;

[0009] The second movable member is installed in the second cavity and can move between a third position for blocking the second water inlet and a fourth position for opening the second water inlet; wherein,

[0010] When water pressure is generated at the first water inlet, the first movable part can move to the second position after being subjected to water pressure, and the second movable part can move to the fourth position after being subjected to water pressure. The opening time of the second water inlet is earlier than the opening time of the first water inlet, and the water outlet flow rate of the water outlet channel to the first cavity is less than the water outlet flow rate from the first water inlet to the first cavity.

[0011] The delayed water outlet valve according to the embodiment of the present invention has at least the following beneficial effects: the delayed water outlet valve gradually transitions from the small displacement mode to the large displacement mode, thereby effectively delaying the large displacement water outlet time and having an early warning effect at the initial water outlet.

[0012] According to some embodiments of the present invention, a third cavity is further provided inside the shell, the first movable part passes through the third cavity and defines a driving chamber and a pressure chamber with the third cavity, a flow hole is provided between the driving chamber and the pressure chamber, and the flow hole is configured so that the flow rate from the driving chamber to the pressure chamber decreases as the water pressure increases, and when the first movable part moves, the cavity of one of the driving chamber and the pressure chamber becomes larger, and the cavity of the other becomes smaller.

[0013] According to some embodiments of the present invention, a partition is provided in the third cavity, the first movable part includes a first plug and a second plug, the first plug and the second plug are connected by a connecting rod, the connecting rod is passed through the partition, the driving cavity is defined between the first plug and the partition, the pressure cavity is defined between the second plug and the partition, the second cavity is arranged in the first plug, and the flow hole is opened on the partition.

[0014] According to some embodiments of the present invention, a first elastic member and a second elastic member are further included, wherein the first elastic member applies a first elastic force to the first movable member to move it toward the first position, and the second elastic member applies a second elastic force to the second movable member to move it toward the third position, and the first elastic force is greater than the second elastic force.

[0015] According to some embodiments of the present invention, the partition extends an edge toward one side of the driving chamber, the edge and the side wall of the driving chamber form a water flow chamber, the flow hole connects the water flow chamber and the pressure chamber, and an elastic flow limiting ring is installed in the water flow chamber, and the flow limiting ring elastically deforms as the water pressure in the water flow chamber increases to gradually increase the water inlet blocking area of the flow hole.

[0016] According to some embodiments of the present invention, a cross section of the flow hole gradually expands in a radial direction of the flow limiting ring away from a center of the flow limiting ring.

[0017] According to some embodiments of the present invention, a one-way water supply structure is provided between the driving chamber and the pressure chamber, and the one-way water supply structure is configured to only supply water in one direction from the pressure chamber to the driving chamber.

[0018] According to some embodiments of the present invention, the one-way water supply structure includes a V-shaped sealing ring, the sealing ring is sleeved on the first movable part, a first through hole is opened on the partition, the first movable part is passed through the first through hole, the sealing ring is located in the driving cavity and abuts against the partition, and the opening side of the sealing ring faces the driving cavity.

[0019] According to some embodiments of the present invention, the first plug includes a first plug body and a second plug body, the connecting rod extends from the first plug body toward the side of the partition, the first plug body is engaged with the second plug body on the side facing the first water inlet, the second cavity is defined between the first plug body and the second plug body, the second water inlet is formed on the end of the second plug body, and a second through hole is opened on the side wall of the first plug body to form the water outlet channel.

[0020] The shower head according to the second embodiment of the present invention includes a delayed water outlet valve.

[0021] The shower head according to the embodiment of the present invention has at least the following beneficial effects: when a user turns on the shower head's water valve, a small amount of water is discharged from one of the top spray, handheld nozzle, or back spray, and the user has sufficient reaction time to switch to the required water outlet for spraying water. In addition, if the shower head's water valve is accidentally turned on, the user has sufficient time to close the valve, thereby preventing water from accidentally spraying onto the body and achieving a warning effect.

[0022] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure of the delayed water outlet valve;

[0025] Figure 2 It is a structural diagram of the shell;

[0026] Figure 3 is a structural schematic diagram of the first movable member;

[0027] Figure 4 is a schematic diagram of a situation in which the first movable member inside the delayed water outlet valve is located in the first position and the second movable member is located in the third position;

[0028] Figure 5 is a schematic diagram of a situation in which the first movable member inside the delayed water outlet valve is located in the first position and the second movable member is located in the fourth position;

[0029] Figure 6 is a schematic diagram of the delayed water outlet valve when the first movable member is in the second position and the second movable member is in the fourth position;

[0030] Figure 7 is a top view of the shell;

[0031] Figure 8 yes Figure 7 Schematic diagram of the change in the blocking effect on the flow hole after the current limiting ring is elastically deformed under pressure.

[0032] Figure markings: shell 100; inner shell 101; outer shell 102; first cavity 110; first water inlet 120; water outlet 130; third cavity 140; drive cavity 141; pressure cavity 142; flow hole 143; partition 150; extension 151; first through hole 152; water cavity 160; first movable part 200; second cavity 210; second water inlet 220; water outlet channel 230; second through hole 231; first plug 240; first plug body 241; second plug body 242; second plug 250; connecting rod 260; second movable part 300; first elastic part 410; second elastic part 420; flow limiting ring 510; retaining ring 520; sealing ring 600. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0034] The present invention relates to a delayed water outlet valve, comprising a housing 100 , a first movable part 200 and a second movable part 300 .

[0035] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the shell 100 can be set to a hollow cylindrical shape. A first cavity 110 is provided inside the shell 100, and the first cavity 110 has a first water inlet 120 and a water outlet 130. In the direction shown in the figure, the water outlet 130 is located at the top of the first cavity 110, and the first water inlet 120 is located at the bottom of the first cavity 110. The first movable member 200 is installed in the shell 100, and the first movable member 200 moves between a first position and a second position relative to the shell 100. When the first movable member 200 is in the first position, the first movable member 200 blocks the first water inlet 120, and external water cannot directly enter the first cavity 110 through the first water inlet 120. When the first movable member 200 moves upward to the second position, the first movable member 200 leaves the first water inlet 120, the first water inlet 120 is opened, and external water can flow into the first cavity 110 through the first water inlet 120, and then be discharged to the outside of the shell 100 through the water outlet 130. A second cavity 210 is provided on the first movable member 200. The bottom opening of the second cavity 210 faces the first water inlet 120, and the bottom opening of the second cavity 210 constitutes a second water inlet 220. A water outlet channel 230 is provided on the side wall of the second cavity 210, and the water outlet channel 230 keeps the second cavity 210 connected with the first cavity 110. The second movable member 300 is installed in the second cavity 210, and the second movable member 300 can be plugged into the first movable member 200 through the shaft section. The second movable member 300 can move between a third position and a fourth position relative to the second cavity 210. When the second movable member 300 is in the third position, the second movable member 300 blocks the second water inlet 220, and external water cannot flow into the second cavity 210 through the second water inlet 220. When the second movable member 300 moves upward to the fourth position, the second movable member 300 moves away from the second water inlet 220, and the second water inlet 220 is opened, allowing external water to flow into the second cavity 210 through the second water inlet 220, and then flow from the second cavity 210 into the first cavity 110 through the water outlet channel 230, and finally be discharged from the water outlet 130. The water outlet channel 230 is configured such that the water flow rate to the first cavity 110 is smaller than the water flow rate to the first cavity 110 from the first water inlet 120. Specifically, the water flow cross-sectional area of the water outlet channel 230 can be configured to be smaller than or much smaller than the water flow cross-sectional area of the first water inlet 120.

[0036] The first movable part 200 and the second movable part 300 are mainly moved by the influence of water pressure. The delayed water outlet valve is used in a shower as an example for explanation. The shower can be a hand-held shower, or it can be composed of water outlet parts such as a top spray, a hand-held nozzle, and a back spray. The delayed water outlet valve is installed in the shower, and the first water inlet 120 and the second water inlet 220 are facing the water inlet side of the shower, and the water outlet 130 is facing the water outlet side of the shower. Figure 4As shown, in the initial state, the first movable member 200 is located in the first position to block the first water inlet 120, and the second movable member 300 is located in the third position to block the second water inlet 220. When the control valve of the shower is turned on, water forms water pressure at the first water inlet 120 and the second water inlet 220. The water pressure acts on the ends of the second movable member 300 and the first movable member 200. Figure 5 As shown, the second movable part 300 will be pushed by water pressure and move earlier than the first movable part 200. The successive movements of the second movable part 300 and the first movable part 200 can be controlled by mechanical components or by electronic control components. The second movable part 300 moves from the third position to the fourth position, and the second water inlet 220 gradually opens. Water flows through the second water inlet 220, the second cavity 210, the water outlet channel 230, the first cavity 110 and the water outlet 130 in sequence, and the water flows out from the water outlet 130 and is discharged from the water outlet side of the shower head. At this time, the outflow of water through the water outlet channel 230 is a small displacement mode, and only a small amount of water flows out of the nozzle of the shower head. As shown Figure 6 As shown, as the water pressure on the first water inlet 120 from the water inlet side of the shower increases, the water pressure pushes the first movable part 200 to move from the first position to the second position. After the second movable part 300 moves to the fourth position, it can also push the first movable part 200 to move to the second position. The first water inlet 120 is opened, and water flows directly into the first cavity 110 from the first water inlet 120, and the water flows out from the water outlet 130 and is discharged from the water outlet side of the shower. At this time, the outflow of water from the first inlet, the first cavity 110, and the water outlet 130 is in a large-displacement mode, and the shower head sprays water normally. The delayed water outlet valve gradually transitions from the small-displacement mode to the large-displacement mode, thereby effectively delaying the large-displacement water outlet time. In this way, when the user turns on the control valve of the shower, a small amount of water will be discharged from one of the overhead spray, handheld nozzle or back spray. The user has sufficient reaction time to switch to the required water outlet for spraying water. If the control valve of the shower is accidentally opened, there is sufficient time to close the control valve, so as to avoid water from accidentally spraying on the body and achieve an early warning effect.

[0037] In addition, when the first water inlet 120 and the second water inlet 220 are blocked, water cannot flow back from the outlet side of the shower head to the inlet side, and the delayed water outlet valve also serves as a check valve. The delayed water outlet valve can also be used in some terminal devices with check valve requirements.

[0038] In one embodiment, if Figure 1 、 Figure 2 and Figure 4As shown, the shell 100 can be composed of an inner shell 101 and an outer shell 102. A first cavity 110 is formed between the inner shell 101 and the outer shell 102. A third cavity 140 is formed inside the inner shell 101. The first movable part 200 is arranged in the third cavity 140, and a driving cavity 141 and a pressure cavity 142 are defined between the first movable part 200 and the third cavity 140. The pressure cavity 142 and the driving cavity 141 are distributed up and down in the figure. A flow hole 143 is provided between the driving cavity 141 and the pressure cavity 142. The driving cavity 141 and the pressure cavity 142 are closed cavities, and the two are connected through the flow hole 143. The flow hole 143 is configured so that the flow from the driving cavity 141 to the pressure cavity 142 decreases as the water pressure increases. When the first movable part 200 moves, the cavity of one of the driving cavity 141 and the pressure cavity 142 becomes larger, and the cavity of the other becomes smaller. In this embodiment, as Figure 4 As shown, when the first movable member 200 is in the first position, the volume of the driving chamber 141 is at its maximum state, and the driving chamber 141 is filled with water or other liquids; the volume of the pressure chamber 142 is at its minimum state, which may be a zero volume state. Figure 6 As shown, when the first movable member 200 moves from the first position to the second position, the volume of the drive chamber 141 decreases as the first movable member 200 rises, while the volume of the pressure chamber 142 increases. Water in the drive chamber 141 flows into the pressure chamber 142 through the flow hole 143. If the water pressure on the first movable member 200 from the showerhead's water inlet increases, the first movable member 200 will accelerate toward the second position. As the first movable member 200 accelerates, the water in the drive chamber 141 increases the pressure on the flow hole 143. This increased water pressure reduces the flow rate in the flow hole 143, hindering the acceleration of the first movable member 200. This allows the first movable member 200 to move toward the second position at a relatively uniform speed. This effectively ensures that the showerhead maintains a stable, delayed normal water spray time under both high and low water pressure conditions. Furthermore, the first water inlet 120 will eventually fully open, without affecting the normal water flow rate of the showerhead.

[0039] Based on the above embodiments, Figure 2 and Figure 4As shown, a partition 150 is provided in the third cavity 140, which separates the third cavity 140 into two upper and lower cavities. The second movable member 300 includes a first plug 240 and a second plug 250. The first plug 240 and the second plug 250 are piston structures. The first plug 240 and the second plug 250 are connected by a connecting rod 260. The connecting rod 260 can be formed on the first plug 240, and the connecting rod 260 penetrates from the bottom into the lower part of the third cavity 140 and then extends upward through the partition 150 into the upper part of the third cavity 140. The upper end of the connecting rod 260 and the second plug 250 can be connected by means such as threads. The first plug 240 is located in the lower part of the third cavity 140, and the driving cavity 141 is defined between the first plug 240, the partition 150, and the lower cavity wall of the third cavity 140. The second plugging member 250 is positioned above the third cavity 140. A pressure chamber 142 is defined between the second plugging member 250, the partition 150, and the upper wall of the third cavity 140. Seals can be provided on the first and second plugging members 240, 250 to abut against the wall of the third cavity 140 for a watertight seal. A flow hole 143 is provided in the partition 150. The first and second plugging members 240, 250 move synchronously via a connecting rod 260. When the drive cavity 141 expands, the pressure chamber 142 contracts; when the drive cavity 141 contracts, the pressure chamber 142 expands.

[0040] Among them, when the control valve of the shower is closed, the first movable member 200 can be manually reset to the first position and the second movable member 300 to the third position. Alternatively, a reset member can be provided in the delayed water outlet valve to automatically reset the first movable member 200 and the second movable member 300. In this embodiment, Figure 1 and Figure 4As shown, the movable member 200 further includes a first elastic member 410 and a second elastic member 420. The first elastic member 410 is disposed between the first plugging member 240 and the partition 150. The first elastic member 410 may be a spring and is mounted on the connecting rod 260. One end of the first elastic member 410 directly or indirectly abuts the partition 150, while the other end abuts the first plugging member 240. The first elastic member 410 applies a first elastic force to the first plugging member 240, causing it to move toward the first position. When the first movable member 200 is subjected to water pressure from the first water inlet 120, the drive chamber 141 shrinks, causing the first elastic member 410 to elastically contract. A second elastic member 420, which may be a spring, is disposed between the second movable member 300 and the first plugging member 240. The second elastic member 420 may be mounted on either the first plugging member 240 or the second movable member 300. One end of the second elastic member 420 abuts the first plugging member 240, while the other end abuts the second movable member 300. The second elastic member 420 exerts a second elastic force on the second movable member 300, causing it to move toward the third position. When the second movable member 300 is subjected to water pressure from the second water inlet 220, it moves upward, while the second elastic member 420 elastically contracts. When the showerhead control valve is turned off, the water pressure at the first and second water inlets 120, 220 decreases, causing the first and second elastic members 410, 420 to elastically return to their original positions, returning the first movable member 200 to the first position and the second movable member 300 to the third position. The first elastic force is greater than the second elastic force. Since the first and second water inlets 120, 220 experience the same water pressure, the second elastic force is smaller than the first elastic force. This causes the second movable member 300 to move toward the fourth direction earlier than the first movable member 200 when water enters the showerhead's water inlet side. This, combined with the action of the drive chamber 141 and the pressure chamber 142, allows the first movable member 200 to open the first water inlet 120 at a uniform speed.

[0041] As to how the flow hole 143 can change the flow rate according to the change of water pressure, a valve flap can be set inside the flow hole 143, and the valve flap will change the opening according to the change of water pressure to control the flow rate of the flow hole 143. Figure 2 、 Figure 4 and Figure 7As shown, the partition 150 extends an edge 151 toward one side of the drive chamber 141. The edge 151 is cylindrical and surrounds the connecting rod 260. The edge 151 and the circumferential side wall of the drive chamber 141 form a circular water passage chamber 160. The lower opening of the water passage chamber 160 is connected to the drive chamber 141. The flow hole 143 is aligned with the water passage chamber 160 on the partition 150, and the water passage chamber 160 is connected to the pressure chamber 142 through the flow hole 143. An elastic flow limiting ring 510 is installed in the water passage chamber 160. A hollow snap ring 520 can be installed at the lower opening of the water passage chamber 160, and the flow limiting ring 510 is fixed in the water passage chamber 160 through the snap ring 520. The water in the drive chamber 141 flows through the water chamber 160 and the flow hole 143 in sequence and enters the pressure chamber 142. The current limiting ring 510 is aligned with the lower end of the flow hole 143, and the current limiting ring 510 can partially block the lower end of the flow hole 143. Figure 7 and Figure 8 As shown, when the first movable member 200 accelerates from the first position to the second position, the water pressure in the drive chamber 141 and the water flow chamber 160 increases. The flow restriction ring 510 is subjected to pressure and elastically deforms, increasing the water inlet obstruction area at the lower end of the flow hole 143, thereby reducing the flow rate of the flow hole 143. Specifically, the flow hole 143 is vertically formed in the partition 150 in the shape of a narrow channel. The cross-section of the flow hole 143 gradually expands radially away from the center of the flow restriction ring 510. The cross-section of the flow hole 143 can be triangular or fan-shaped. As the water pressure on the flow restriction ring 510 increases, the inner side of the flow restriction ring 510 contracts toward the center. The projection of the flow restriction ring 510 on the cross-section of the flow hole 143 gradually moves toward the center, gradually obstructing the flow hole 143. The obstruction area changes linearly, thereby ensuring that the delayed water discharge time of the delayed water discharge valve is stable or close to a certain threshold.

[0042] In one embodiment, a one-way water supply structure is provided between the drive chamber 141 and the pressure chamber 142. The one-way water supply structure is configured to only supply water in one direction, from the pressure chamber 142 to the drive chamber 141. When water in the drive chamber 141 flows into the pressure chamber 142, the water can only be transported through the flow hole 143. When the first movable member 200 is reset to the first position, the water in the pressure chamber 142 can flow from the flow hole 143 to the drive chamber 141. At the same time, water can flow from the pressure chamber 142 to the drive chamber 141 through the one-way water supply structure, thereby accelerating the speed at which water flows back to the drive chamber 141, thereby enabling the first movable member 200 to quickly reset to the first position.

[0043] The one-way water supply structure can be a one-way valve, which is installed on the partition 150. In this embodiment, Figure 1 and Figure 4As shown, the one-way water supply structure includes a V-shaped sealing ring 600, which is mounted on the first movable member 200. A first through-hole 152 is defined in the partition 150, located at its center, with an extension 151 surrounding it. The first movable member 200 passes through the first through-hole 152, with a gap between them. The sealing ring 600 is located in the drive chamber 141 and abuts upward against the underside of the partition 150. The opening of the sealing ring 600 faces the drive chamber 141. When water flows from the drive chamber 141 to the pressure chamber 142, it impacts the opening of the sealing ring 600, forcing the inner wall of the sealing ring 600 to adhere tightly to the first movable member 200 and seal the gap between the first movable member 200 and the first through-hole 152, allowing water to flow only through the flow hole 143 into the pressure chamber 142. When water flows from the pressure chamber 142 toward the drive chamber 141, it impacts the closed side of the sealing ring 600 through the gap between the first through-hole 152 and the first movable member 200. The inner wall of the sealing ring 600 separates from the first movable member 200, creating a gap. Water can flow from the gap between the sealing ring 600 and the first movable member 200 toward the drive chamber 141, thereby achieving a one-way water supply function. The upper end of the first elastic member 410 can abut against the sealing ring 600, thereby maintaining the sealing ring 600 in contact with the partition 150.

[0044] In some specific embodiments of the present invention, Figure 1 、 Figure 3 and Figure 4 As shown, the first plug 240 includes a first plug body 241 and a second plug body 242. The connecting rod 260 extends from the upper side of the first plug body 241 toward the partition 150. The lower side of the first plug body 241 is interlocked with the second plug body 242, and different second plug bodies 242 can be selected for installation in conjunction with the first plug body 241. The lower side of the first plug body 241 forms a cavity opening downward, and the second plug body 242 is a hollow cylindrical structure. The above-mentioned second cavity 210 is defined between the first plug body 241 and the second plug body 242. The second water inlet 220 is formed at the lower end of the second plug body 242, and a second through hole 231 is provided on the side wall of the first plug body 241 to form a water outlet channel 230. The first water inlet 120 is blocked by the second plug body 242. The aperture of the second through hole 231 is much smaller than that of the first water inlet 120 , so that the flow rate of water from the water outlet channel 230 to the first cavity 110 is much lower than the flow rate from the first water inlet 120 to the first cavity 110 .

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 understood as limiting the present invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0047] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0049] Throughout this specification, references to "some specific embodiments" and the like indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A delayed water outlet valve, characterized in that: include: A housing (100) is provided with a first cavity (110) therein, wherein the first cavity (110) is provided with a first water inlet (120) and a water outlet (130); a first movable member (200) mounted in the housing (100) and capable of moving between a first position for blocking the first water inlet (120) and a second position for opening the first water inlet (120); a second cavity (210) being provided on the first movable member (200); the second cavity (210) being provided with a second water inlet (220) communicating with the first water inlet (120) and a water outlet channel (230) communicating with the first cavity (110); a second movable member (300) installed in the second cavity (210) and capable of moving between a third position for blocking the second water inlet (220) and a fourth position for opening the second water inlet (220); wherein, when water pressure is generated at the first water inlet (120), the first movable member (200) is capable of moving toward the second position under the water pressure, and the second movable member (300) is capable of moving toward the fourth position under the water pressure, the second water inlet (220) is opened earlier than the first water inlet (120), and the water flow rate of the water outlet channel (230) to the first cavity (110) is less than the water flow rate of the water outlet channel (120) to the first cavity (110); A third cavity (140) is further provided inside the shell (100), and the first movable member (200) is arranged in the third cavity (140) and defines a driving cavity (141) and a pressure cavity (142) together with the third cavity (140). A flow hole (143) is provided between the driving cavity (141) and the pressure cavity (142), and the flow hole (143) is configured so that the flow rate from the driving cavity (141) to the pressure cavity (142) decreases as the water pressure increases. When the first movable member (200) moves, the cavity of one of the driving cavity (141) and the pressure cavity (142) becomes larger, and the cavity of the other becomes smaller.

2. The delayed water outlet valve according to claim 1, characterized in that: A partition (150) is provided in the third cavity (140), the first movable member (200) includes a first plug member (240) and a second plug member (250), the first plug member (240) and the second plug member (250) are connected by a connecting rod (260), the connecting rod (260) is passed through the partition (150), the driving cavity (141) is defined between the first plug member (240) and the partition (150), the pressure cavity (142) is defined between the second plug member (250) and the partition (150), the second cavity (210) is provided in the first plug member (240), and the partition (150) is provided with the flow hole (143).

3. The delayed water outlet valve according to claim 1 or 2, characterized in that: It also includes a first elastic member (410) and a second elastic member (420), wherein the first elastic member (410) applies a first elastic force to the first movable member (200) to move it toward the first position, and the second elastic member (420) applies a second elastic force to the second movable member (300) to move it toward the third position, and the first elastic force is greater than the second elastic force.

4. The delayed water outlet valve according to claim 2, characterized in that: The partition (150) extends an edge (151) toward one side of the driving chamber (141), and the edge (151) and the side wall of the driving chamber (141) form a water passage chamber (160). The flow hole (143) connects the water passage chamber (160) and the pressure chamber (142). An elastic flow limiting ring (510) is installed in the water passage chamber (160). The flow limiting ring (510) elastically deforms as the water pressure in the water passage chamber (160) increases, thereby gradually increasing the water inlet shielding area of the flow hole (143).

5. The delayed water outlet valve according to claim 4, characterized in that: The cross section of the flow hole (143) gradually expands along the radial direction of the flow limiting ring (510) in a direction away from the center of the flow limiting ring (510).

6. The delayed water outlet valve according to claim 2, characterized in that: A one-way water supply structure is provided between the driving chamber (141) and the pressure chamber (142), and the one-way water supply structure is configured to only supply water in one direction from the pressure chamber (142) to the driving chamber (141).

7. The delayed water outlet valve according to claim 6, characterized in that: The one-way water supply structure comprises a V-shaped sealing ring (600), the sealing ring (600) is sleeved on the first movable part (200), a first through hole (152) is opened on the partition (150), the first movable part (200) is passed through the first through hole (152), the sealing ring (600) is located in the driving cavity (141) and abuts against the partition (150), and the opening side of the sealing ring (600) faces the driving cavity (141).

8. The delayed water outlet valve according to claim 2, characterized in that: The first plug (240) comprises a first plug body (241) and a second plug body (242); the connecting rod (260) extends from the first plug body (241) toward the side of the partition (150); the first plug body (241) is engaged with the second plug body (242) on the side facing the first water inlet (120); a second cavity (210) is defined between the first plug body (241) and the second plug body (242); the second water inlet (220) is formed on the end of the second plug body (242); a second through hole (231) is provided on the side wall of the first plug body (241) to form the water outlet channel (230).

9. A shower head, characterized by: Including the delayed water outlet valve according to any one of claims 1 to 8.

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