A shower head

Abstract

The present application relates to the technical field of shower, and discloses a shower, which comprises a water inlet channel, a plurality of water distribution cavities, a plurality of water outlet cavities and elastic diaphragms, the cavity wall of the water distribution cavity is provided with a first water passing hole and a second water passing hole, the water distribution cavity and the water outlet cavity are arranged one by one, the water distribution cavity is communicated with the water outlet cavity through the second water passing hole, at least one water outlet nozzle is arranged in each water outlet cavity, the elastic diaphragm is installed in the water distribution cavity, and a pressure relief cavity is formed between the elastic diaphragm and the cavity wall of the water distribution cavity. The present application utilizes the switch water flow to control the deformation and elastic reset of the elastic diaphragm, so as to realize the opening and closing of the passage between the water inlet channel and the water outlet cavity. The pressure relief cavity is arranged in the water distribution cavity, the elastic diaphragm is deformed and recovered after the water is turned off, the pressure relief cavity and the water outlet cavity are conducted, part of the water in the water outlet cavity is sucked into the pressure relief cavity, the residual water pressure in the water outlet cavity is reduced, and the surface tension and the atmospheric pressure at the outlet end of the water outlet nozzle can overcome the pressure of the residual water in the water outlet cavity, so that the residual water does not drip.

Description

Technical Field

[0001] This invention relates to the field of shower head technology, and in particular to a shower head. Background Technology

[0002] Existing overhead showerheads on the market, when tilted, exhibit a prolonged dripping time after the water is turned off, resulting in residual water droplets falling onto the floor or storage platform, leading to a poor user experience. A related technology discloses a showerhead with rapid water-stopping capabilities. This technology features a ring-shaped diaphragm above the water outlet. Under water pressure, the diaphragm deforms, allowing the water distribution chamber and the water-stopping chamber to connect, thus spraying water from the showerhead. When the water valve is closed, the water pressure is insufficient to maintain the diaphragm's deformation, causing it to return to its original shape and close the channel between the water distribution chamber and the water-stopping chamber, achieving rapid water-stopping. This solution works well when the showerhead is completely horizontal; however, its water-stopping effect is poor when the showerhead is tilted. This is because when the showerhead is tilted, the water pressure inside the lower water-stopping chamber is higher. When the water pressure in the water-stopping chamber exceeds the elasticity of the diaphragm, it deforms the diaphragm, causing the water-stopping function to fail. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes a shower head.

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

[0005] A shower head according to an embodiment of the present invention includes:

[0006] Water inlet channel;

[0007] Several water distribution chambers are provided, and the walls of the water distribution chambers are provided with a first water passage hole and a second water passage hole. The water distribution chambers are connected to the water inlet channel through the first water passage hole. A first sealing part and a second sealing part are formed inside the water distribution chambers.

[0008] Several water outlet chambers are provided, with the water distribution chamber and the water outlet chamber being arranged in a one-to-one correspondence. The water distribution chamber is connected to the water outlet chamber through the second water passage hole, and each water outlet chamber is provided with at least one water outlet.

[0009] An elastic diaphragm is installed inside the water distribution chamber. The elastic diaphragm and the chamber wall of the water distribution chamber form a pressure relief chamber. In the water-off state, the elastic diaphragm presses against the first sealing part to block the passage between the first water passage and the second water passage, and the elastic diaphragm disengages from the second sealing part to connect the pressure relief chamber and the second water passage. In the water-in state, the elastic diaphragm is deformed by water pressure and disengages from the first sealing part to connect the first water passage and the second water passage, and the elastic diaphragm presses against the second sealing part to block the passage between the pressure relief chamber and the second water passage.

[0010] The shower head according to an embodiment of the present invention has at least the following beneficial effects:

[0011] 1. This invention sets up several independent and small water distribution chambers and water outlet chambers. Each water distribution chamber is connected to one water outlet chamber. Each water outlet chamber is connected to several water spouts. Each water distribution chamber independently controls the opening and closing of the water outlet chambers it is connected to. Compared with all water spouts being connected through a large cavity, using independently distributed small cavities can reduce the liquid level height of the water spouts when the shower head is tilted, and significantly reduce the pressure of residual water in the cavity.

[0012] 2. This invention incorporates an elastic diaphragm within the water distribution chamber. The deformation and elastic reset of the diaphragm are controlled by the switching water flow, thereby opening and closing the passage between the inlet and outlet water channels. A pressure relief chamber is also included within the water distribution chamber. After the water is turned off, the elastic diaphragm returns to its original shape, connecting the pressure relief chamber and the outlet water channel. Some water from the outlet water channel is drawn into the pressure relief chamber, reducing the residual water pressure. The combined effect of the surface tension at the nozzle outlet and atmospheric pressure overcomes the pressure of the residual water in the outlet water channel, preventing dripping. This allows for immediate water shut-off when the top sprayer is tilted, improving user comfort and expanding its application range.

[0013] According to some embodiments of the present invention, the water outlet cavity includes a water outlet channel and a water stop cavity, the water stop cavity being provided in a one-to-one correspondence with the water outlet nozzle, the side wall of the water stop cavity having a third water passage hole, the third water passage hole communicating with the second water passage hole through the water outlet channel, the water stop cavity having a water stop lip, the water stop lip being an elastic annular body, the water stop lip being provided along the outer periphery of the water outlet nozzle, in the water-off state, the water stop lip forming a clearance fit or abutment fit with the side wall of the water stop cavity, in the water-in state, the water stop lip deforming inward to connect the third water passage hole and the water outlet nozzle.

[0014] According to some embodiments of the present invention, the water inlet body, the fixed seat, and the water outlet body are further included. The fixed seat is located below the water inlet body, and the water distribution cavity is formed between the fixed seat and the water inlet body. The water outlet body is located below the fixed seat, and the water outlet cavity is formed between the water outlet body and the fixed seat. The water outlet nozzle is provided on the water outlet body.

[0015] According to some embodiments of the present invention, the elastic diaphragm is an annular body with a through hole in its middle, the first sealing part has a spherical surface, a first V-shaped annular groove is formed around the through hole on the elastic diaphragm, the cross-section of the first V-shaped annular groove is V-shaped, the second sealing part is located below the first V-shaped annular groove, the second sealing part is a flange surrounding the outer periphery of the second water passage, in the water-closing state, the edge of the through hole circumferentially abuts against the spherical surface, in the water-in state, the outer periphery of the first V-shaped annular groove abuts against the second sealing part circumferentially.

[0016] According to some embodiments of the present invention, a second V-shaped annular groove is further formed on the elastic diaphragm. The cross-section of the second V-shaped annular groove is V-shaped. The second V-shaped annular groove surrounds the outer periphery of the first V-shaped annular groove so that the cross-section of the elastic diaphragm in the radial direction is W-shaped. The cavity wall of the water-dividing cavity has an irregular surface. The shape of the irregular surface is adapted to the shape of the elastic diaphragm. A gap is left between the irregular surface and the elastic diaphragm to form the pressure relief cavity.

[0017] According to some embodiments of the present invention, the cavity wall of the water distribution chamber is further provided with a fourth water passage hole, the second water passage hole is located directly below the through hole, the diameter of the second water passage hole is larger than the diameter of the through hole, the fourth water passage hole is located between the second water passage hole and the second sealing part, and the fourth water passage hole communicates with the water outlet cavity.

[0018] According to some embodiments of the present invention, each water outlet chamber is provided with 1 to 6 water outlets.

[0019] According to some embodiments of the present invention, the water outlet body includes a water outlet panel and a water outlet net. The water outlet panel is made of a rigid material and is fixedly connected to the fixed base. The water outlet net is made of silicone material. The water outlet nozzle and the water-stop lip are formed on the water outlet net. The water outlet net is located on the inner side of the water outlet panel, and the water outlet nozzle passes through the water outlet panel.

[0020] According to some embodiments of the present invention, the upper part of the water-stopping lip gradually expands outward from bottom to top to form a trumpet-shaped wide opening; and / or, there is a fitting gap δ2 between the water-stopping lip and the side wall of the water-stopping cavity, wherein the fitting gap δ2 ≤ 0.05 mm.

[0021] According to some embodiments of the present invention, the fixing seat is provided with a plurality of annular walls, the lower ends of the annular walls abutting against the water outlet body to form the water-stopping cavity.

[0022] According to some embodiments of the present invention, in the water-closing state, there is an elastic gap δ1 between the elastic diaphragm and the second sealing part, where δ1 = 0.3 mm - 0.5 mm.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is an exploded view of the shower head of the present invention;

[0026] Figure 2 This is a partial cross-sectional view of the shower head of the present invention (in the water-off state).

[0027] Figure 3 This is a partial cross-sectional view (water inlet state) of the shower head of the present invention.

[0028] Figure 4 This is a schematic diagram of the shower head of the present invention being placed at an angle;

[0029] Figure 5 This is a partial structural diagram of the upper end face of the fixing base of the present invention;

[0030] Figure 6 This is a partial structural diagram of the lower end face of the fixing base of the present invention;

[0031] Figure 7 This is a structural diagram of the elastic diaphragm of the present invention.

[0032] Reference numerals: Water inlet 100, water inlet channel 110, first water passage 120, first sealing part 130, fixed base 200, water distribution cavity 210, pressure relief cavity 211, irregular surface 212, second water passage 220, second sealing part 230, water stop cavity 240, third water passage 241, fourth water passage 250, water outlet channel 260, annular wall 270, water outlet 300, water outlet net 310, water outlet nozzle 311, water stop lip 312, water outlet panel 320, elastic diaphragm 400, through hole 410, first V-shaped annular groove 420, second V-shaped annular groove 430. Detailed Implementation

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

[0034] Reference Figures 1-3 A shower head, comprising:

[0035] Water inlet channel 110;

[0036] Several water distribution chambers 210 are provided. The walls of the water distribution chambers 210 are provided with a first water passage hole 120 and a second water passage hole 220. The water distribution chambers 210 are connected to the water inlet channel 110 through the first water passage hole 120. A first sealing part 130 and a second sealing part 230 are formed inside the water distribution chambers 210.

[0037] Several water outlet chambers are provided, with water distribution chamber 210 corresponding to each water outlet chamber. Water distribution chamber 210 is connected to water outlet chamber through second water passage 220. Each water outlet chamber is provided with at least one water outlet 311.

[0038] An elastic diaphragm 400 is installed inside the water distribution chamber 210. The elastic diaphragm 400 and the chamber wall of the water distribution chamber 210 form a pressure relief chamber 211. In the water-off state, the elastic diaphragm 400 presses against the first sealing part 130 to block the passage between the first water passage 120 and the second water passage 220, and the elastic diaphragm 400 disengages from the second sealing part 230 to connect the pressure relief chamber 211 and the second water passage 220. In the water-in state, the elastic diaphragm 400 is deformed by water pressure and disengages from the first sealing part 130 to connect the first water passage 120 and the second water passage 220, and the elastic diaphragm 400 presses against the second sealing part 230 to block the passage between the pressure relief chamber 211 and the second water passage 220.

[0039] When water is introduced, the water flows from the inlet channel 110 into the water distribution chamber 210. The water pressure drives the elastic diaphragm 400 to deform downwards, causing the elastic diaphragm 400 to disengage from the first sealing part 130, thus opening the passage between the inlet channel 110 and the outlet chamber. During the downward deformation of the elastic diaphragm 400 driven by the water pressure, the elastic diaphragm 400 compresses the pressure relief chamber 211 and presses against the second sealing part 230, closing the pressure relief passage.

[0040] After the water is turned off, the water pressure in the water distribution chamber 210 drops rapidly. The residual water pressure is less than the rubber elasticity of the elastic diaphragm 400, causing the elastic diaphragm 400 to spring back to its original position and elastically contact the first sealing part 130, closing the passage between the water inlet channel 110 and the water outlet chamber. During the upward springback process of the elastic diaphragm 400, the elastic diaphragm 400 disengages from the second sealing part 230, opening the pressure relief passage. Furthermore, during the resetting process of the elastic diaphragm 400, the volume of the pressure relief chamber 211 increases, generating suction. Some water from the water outlet chamber is drawn into the pressure relief chamber 211, reducing the residual water pressure in the water outlet chamber.

[0041] When water enters again, the elastic diaphragm 400 is squeezed and deformed again, and the water in the pressure relief chamber 211 is squeezed out, in preparation for the pressure relief chamber 211 to expand and absorb water after the water is turned off.

[0042] In some embodiments of the present invention, since the outlet end of the water nozzle 311 can generate a surface tension ΔP1, and the smaller the orifice diameter of the outlet end, the greater the surface tension, the surface tension ΔP1 can be increased by controlling the orifice diameter of the outlet end of the water nozzle 311. This allows the surface tension ΔP1 to work in conjunction with atmospheric pressure to overcome the residual water pressure in the water outlet cavity, preventing residual water from dripping. In other embodiments of the present invention, a water-stopping lip 312 can be added above the water nozzle 311 to block the passage between the water outlet cavity and the water nozzle 311, further reducing the residual water pressure at the water nozzle 311. In this case, it is not necessary to strictly control the orifice diameter of the outlet end of the water nozzle 311, thus expanding the range of applications. Details are discussed below.

[0043] In some embodiments of the present invention, the water outlet cavity includes a water outlet channel 260 and a water stop cavity 240. The water stop cavity 240 is provided in a one-to-one correspondence with the water outlet 311. A third water passage hole 241 is opened on the side wall of the water stop cavity 240. The third water passage hole 241 is connected to the second water passage hole 220 through the water outlet channel 260. A water stop lip 312 is provided in the water stop cavity 240. The water stop lip 312 is an elastic annular body. The water stop lip 312 is provided along the outer periphery of the water outlet 311. In the water-off state, a gap fit or abutment fit is formed between the water stop lip 312 and the side wall of the water stop cavity 240. In the water-in state, the water stop lip 312 deforms inward to connect the third water passage hole 241 and the water outlet 311.

[0044] When water enters, the water flow pressure is greater than the rubber elasticity of the sealing lip 312, causing the sealing lip 312 to be squeezed and deformed inward. The third water passage 241 connects with the water outlet 311, opening the water outlet passage. After the water is turned off, the residual water pressure in the sealing cavity 240 decreases to less than the rubber elasticity of the sealing lip 312, and the sealing lip 312 elastically resets, returning to a state of clearance fit or abutment fit with the side wall of the sealing cavity 240.

[0045] Regarding the clearance fit, due to the surface tension characteristics of water flow, the fit gap between the water-stopping lip 312 and the side wall of the water-stopping cavity 240 can form a surface tension ΔP2. When ΔP2 is greater than the residual water pressure in the water-stopping cavity 240, the water outlet passage is closed.

[0046] After the water-stop lip 312 is reset, a small amount of water remains in the water outlet 311. The outlet end of the water outlet 311 can form a surface tension ΔP3. The surface tension ΔP3 and atmospheric pressure work together to overcome the pressure of the residual water in the water outlet 311, so that the residual water inside the water outlet 311 can be kept from dripping.

[0047] In some embodiments of the present invention, the elastic diaphragm 400 deforms and recovers after the water is turned off, which reduces the pressure in the water outlet chamber, promotes the repositioning of the water-stopping lip 312, blocks the passage between the water outlet chamber and the water outlet 311, further reduces the liquid level height of the water outlet 311 when the shower head is tilted, and improves the effect of stopping the water immediately after turning off.

[0048] In some embodiments of the present invention, the water inlet body 100, the fixing base 200, and the water outlet body 300 are also included. The fixing base 200 is located below the water inlet body 100, and a water distribution cavity 210 is formed between the fixing base 200 and the water inlet body 100. The water outlet body 300 is located below the fixing base 200, and a water outlet cavity is formed between the water outlet body 300 and the fixing base 200. A water outlet nozzle 311 is provided on the water outlet body 300. In this embodiment, a first sealing part 130 and a first water passage hole 120 are formed in the water inlet body 100, and a second water passage hole 220 and a second sealing part 230 are formed in the fixing base 200.

[0049] In some embodiments of the present invention, reference is made to... Figure 7 The elastic diaphragm 400 is an annular body with a through hole 410 in its middle. The first sealing part 130 has a spherical surface. A first V-shaped annular groove 420 is formed around the through hole 410 on the elastic diaphragm 400. The cross-section of the first V-shaped annular groove 420 is V-shaped. The second sealing part 230 is located below the first V-shaped annular groove 420. The second sealing part 230 is a flange surrounding the outer periphery of the second water passage 220. In the water-off state, the edge of the through hole 410 circumferentially abuts against the spherical surface. In the water-in state, the outer periphery of the first V-shaped annular groove 420 abuts against the second sealing part 230 circumferentially.

[0050] In some embodiments of the present invention, reference is made to... Figure 2 , Figure 5 and Figure 7 A second V-shaped annular groove 430 is also formed on the elastic diaphragm 400. The cross-section of the second V-shaped annular groove 430 is V-shaped. The second V-shaped annular groove 430 surrounds the outer periphery of the first V-shaped annular groove 420, so that the cross-section of the elastic diaphragm 400 in the radial direction is W-shaped. The cavity wall of the water separation cavity 210 has an irregular surface 212. The shape of the irregular surface 212 is adapted to the shape of the elastic diaphragm 400. A gap is left between the irregular surface 212 and the elastic diaphragm 400 to form a pressure relief cavity 211. Specifically, the irregular surface 212 is formed on the upper end face of the fixed base 200. The W-shaped structure of the elastic diaphragm 400 has a strong elastic recovery force. After the water is turned off, it can quickly release elastic potential energy, and the pressure relief cavity 211 expands rapidly to generate sufficient suction. The irregular surface 212 is wavy and matches the trough of the diaphragm at a very close distance, providing rigid support and motion guidance for the elastic diaphragm 400, forcing the diaphragm to deform regularly along a preset direction.

[0051] In some embodiments of the present invention, reference is made to... Figure 2 and Figure 5 The water distribution chamber 210 also has a fourth water passage hole 250 on its wall. The second water passage hole 220 is located directly below the through hole 410, and the diameter of the second water passage hole 220 is larger than that of the through hole 410. The fourth water passage hole 250 is located between the second water passage hole 220 and the second sealing part 230, and the fourth water passage hole 250 communicates with the water outlet chamber. When water enters, the water in the water distribution chamber 210 mainly flows to the water stop chamber 240 through the second water passage hole 220. The fourth water passage hole 250 is mainly used for pressure relief and backflow, increasing the flow area for residual water backflow in the water stop chamber 240, improving the backflow speed, and enhancing the reliability of immediate water shut-off.

[0052] In some embodiments of the present invention, each water outlet chamber is provided with 1 to 6 water outlets 311. One water outlet chamber is connected to several water outlets 311, and each water distribution chamber 210 independently controls the opening and closing of the water outlet chambers connected to it. Compared with all water outlets 311 being connected through a large cavity, using independently distributed small cavities can reduce the liquid level height h of the water outlets 311 when the shower head is tilted. According to P=ρgh, the pressure of residual water in the cavity can be significantly reduced, avoiding deformation of the water-stopping lip 312 due to residual water pressure after the water is turned off, which would lead to water-stopping failure.

[0053] In some embodiments of the present invention, the water outlet 300 includes a water outlet panel 320 and a water outlet net 310. The water outlet panel 320 is made of rigid material and is fixedly connected to the fixing base 200. The water outlet net 310 is made of silicone material. A water outlet nozzle 311 and a water-stopping lip 312 are formed on the water outlet net 310. The water outlet net 310 is located inside the water outlet panel 320, and the water outlet nozzle 311 passes through the water outlet panel 320.

[0054] In some embodiments of the present invention, the upper part of the water-stopping lip 312 gradually expands outward from bottom to top to form a trumpet-shaped wide mouth.

[0055] In some embodiments of the present invention, such as Figure 6 As shown, the lower end face of the fixed base 200 is provided with several annular walls 270, and the lower end of the annular walls 270 abuts against the water outlet body 300 to form a water-stopping cavity 240.

[0056] In some embodiments of the present invention, in the water-off state, there is an elastic gap δ1 between the elastic diaphragm 400 and the second sealing part 230, where δ1 = 0.3 mm - 0.5 mm.

[0057] In some embodiments of the present invention, there is a fitting gap δ2 between the water-stopping lip 312 and the sidewall of the water-stopping cavity 240, and the fitting gap δ2 ≤ 0.05 mm.

[0058] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A shower head, characterized in that, include: Water inlet channel (110); A plurality of water distribution chambers (210) are provided, wherein the walls of the water distribution chambers (210) are provided with a first water passage hole (120) and a second water passage hole (220), the water distribution chambers (210) are connected to the water inlet channel (110) through the first water passage hole (120), and a first sealing part (130) and a second sealing part (230) are formed inside the water distribution chambers (210); A plurality of water outlet chambers are provided, wherein the water distribution chamber (210) is provided in a one-to-one correspondence with the water outlet chamber, the water distribution chamber (210) is connected to the water outlet chamber through the second water passage (220), and each water outlet chamber is provided with at least one water outlet (311); An elastic diaphragm (400) is installed inside the water distribution chamber (210). The elastic diaphragm (400) and the cavity wall of the water distribution chamber (210) form a pressure relief chamber (211). In the water-off state, the elastic diaphragm (400) presses against the first sealing part (130) to block the passage between the first water passage hole (120) and the second water passage hole (220), and the elastic diaphragm (400) disengages from the second sealing part (230) to connect the pressure relief chamber (211) and the second water passage hole (220). In the water-in state, the elastic diaphragm (400) is deformed by water pressure and disengages from the first sealing part (130) to connect the first water passage hole (120) and the second water passage hole (220), and the elastic diaphragm (400) presses against the second sealing part (230) to block the passage between the pressure relief chamber (211) and the second water passage hole (220).

2. The shower head according to claim 1, characterized in that, The water outlet cavity includes a water outlet channel (260) and a water stop cavity (240). The water stop cavity (240) is provided in a one-to-one correspondence with the water outlet (311). A third water passage hole (241) is opened on the side wall of the water stop cavity (240). The third water passage hole (241) is connected to the second water passage hole (220) through the water outlet channel (260). A water stop lip (312) is provided in the water stop cavity (240). The water stop lip (312) is an elastic annular body. The water stop lip (312) is provided along the outer periphery of the water outlet (311). In the water-off state, the water stop lip (312) and the side wall of the water stop cavity (240) form a gap fit or abutment fit. In the water-in state, the water stop lip (312) deforms inward to connect the third water passage hole (241) and the water outlet (311).

3. The shower head according to claim 1, characterized in that, It also includes an inlet body (100), a fixing seat (200), and an outlet body (300). The fixing seat (200) is located below the inlet body (100), and the fixing seat (200) and the inlet body (100) enclose the water distribution cavity (210). The outlet body (300) is located below the fixing seat (200), and the outlet body (300) and the fixing seat (200) enclose the outlet cavity. The water outlet nozzle (311) is provided on the outlet body (300).

4. The shower head according to claim 1, characterized in that, The elastic diaphragm (400) is an annular body with a through hole (410) in its middle. The first sealing part (130) has a spherical surface. A first V-shaped annular groove (420) is formed around the through hole (410) on the elastic diaphragm (400). The cross-section of the first V-shaped annular groove (420) is V-shaped. The second sealing part (230) is located below the first V-shaped annular groove (420). The second sealing part (230) is a flange surrounding the outer periphery of the second water passage (220). In the water-closing state, the edge of the through hole (410) circumferentially abuts against the spherical surface. In the water-in state, the outer periphery of the first V-shaped annular groove (420) circumferentially abuts against the second sealing part (230).

5. The shower head according to claim 4, characterized in that, A second V-shaped annular groove (430) is also formed on the elastic diaphragm (400). The cross-section of the second V-shaped annular groove (430) is V-shaped. The second V-shaped annular groove (430) surrounds the outer periphery of the first V-shaped annular groove (420) so that the cross-section of the elastic diaphragm (400) in the radial direction is W-shaped. The cavity wall of the water distribution cavity (210) has an irregular surface (212). The shape of the irregular surface (212) is adapted to the shape of the elastic diaphragm (400). A gap is left between the irregular surface (212) and the elastic diaphragm (400) to form the pressure relief cavity (211).

6. The shower head according to claim 4, characterized in that, The wall of the water distribution chamber (210) is also provided with a fourth water passage hole (250). The second water passage hole (220) is located directly below the through hole (410). The diameter of the second water passage hole (220) is larger than the diameter of the through hole (410). The fourth water passage hole (250) is located between the second water passage hole (220) and the second sealing part (230). The fourth water passage hole (250) is connected to the water outlet chamber.

7. The shower head according to claim 1, characterized in that, Each of the water outlet chambers is provided with 1 to 6 water outlet nozzles (311).

8. The shower head according to claim 3, characterized in that, The water outlet body (300) includes a water outlet panel (320) and a water outlet net (310). The water outlet panel (320) is made of rigid material and is fixedly connected to the fixing base (200). The water outlet net (310) is made of silicone material. The water outlet nozzle (311) and the water-stop lip (312) are formed on the water outlet net (310). The water outlet net (310) is located on the inner side of the water outlet panel (320). The water outlet nozzle (311) passes through the water outlet panel (320).

9. The shower head according to claim 2, characterized in that, The upper part of the water-stopping lip (312) gradually expands outward from bottom to top to form a trumpet-shaped wide mouth; and / or, there is a fitting gap δ2 between the water-stopping lip (312) and the side wall of the water-stopping cavity (240), and the fitting gap δ2≤0.05mm.

10. The shower head according to claim 1, characterized in that, In the water-closing state, there is an elastic gap δ1 between the elastic diaphragm (400) and the second sealing part (230), where δ1 = 0.3 mm - 0.5 mm.

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