A shower head

Abstract

The present invention provides a shower head, belonging to the technical field of sanitary ware products. It solves the problem that the existing shower head has poor water-stopping effect after normal water discharge. The shower head comprises a water outlet plate with a plurality of water outlet holes, a cover plate is fixed above the water outlet plate, and a water outlet cavity is formed between the water outlet plate and the cover plate, a water outlet seat is connected to the cover plate, and a pumping assembly is provided on the water outlet seat, which can pump out and store water in the water outlet cavity when the water is turned off, and a protruding retaining ring is provided on the upper surface of the water outlet plate around each water outlet hole, and one or more convex columns are provided on the upper end surface of each retaining ring and protrude upward, and the upper end surface of the convex column is close to or close to the lower surface of the cover plate. The shower head can make the water outlet cavity into an ultra-thin structure, which improves the water-stopping effect while ensuring normal water discharge.

Description

Technical Field

[0001] The invention belongs to the technical field of bathroom products and relates to a shower head. Background Art

[0002] Showerheads are nozzles used for showering. Ordinary showerheads cannot stop the water flow immediately after turning off the water. For this reason, engineers are constantly innovating showerheads to try to solve this problem.

[0003] For example, Chinese patent literature discloses a method for turning off water and a water outlet device (publication number CN115138491A), wherein the water outlet device is a top spray shower. A variable chamber and a water outlet chamber are arranged in the water outlet device, and the water outlet device has a water outlet hole connected to the water outlet chamber, and a water-off seal is arranged at the connection between the water outlet hole and the water outlet chamber. The water outlet chamber is provided with a variable cross-section flow channel for accelerating the water flowing through, and the variable cross-section flow channel is provided with a through hole connected to the variable chamber, and the through hole includes a first opening arranged on the variable chamber and a second opening arranged on the variable cross-section flow channel, and the first opening and the second opening are connected to each other through the water outlet chamber. A piston is arranged in the water outlet device, and the piston is sealed and connected to the inner wall of the water outlet device to form the variable chamber; the piston is connected to a spring on the side facing the fixed end of the variable chamber, and when the volume of the variable chamber becomes smaller, the spring is squeezed by the piston to accumulate elastic reset force. When water is flowing, the water flows through the variable-section flow channel and the water outlet chamber and then flows out from the water outlet hole. The water flows through the variable-section flow channel and generates negative pressure. Under the action of atmospheric pressure, the piston moves to make the variable chamber smaller, and at the same time, the spring is compressed to accumulate elastic restoring force. When the water is turned off, the negative pressure at the variable-section flow channel disappears. Under the action of the elastic restoring force of the spring, the water in the water outlet chamber is sucked into the variable chamber by the piston, and at the same time, the water-off seal seals the connection between the water outlet hole and the water outlet chamber.

[0004] In the above-mentioned water shutoff device, when the water is shut off, although the water in the water outlet cavity can be sucked into the variable chamber, and the water outlet hole and the connection point of the water outlet cavity can be sealed by the water shutoff seal, thereby preventing the water in the water outlet cavity from flowing out of the water outlet hole, due to the sealing effect of the water shutoff seal, the water already in the water outlet hole is still retained in the water outlet hole, and there is a possibility of dripping, that is, it can only limit the water in the shower head from continuing to flow out through the water outlet hole, but cannot prevent the water that has reached the water outlet hole from dripping in the form of water drops, and the water stopping effect is not good. In order to reduce the occurrence of this situation, the common practice is to make the water outlet hole smaller to stop the water by using the surface tension of water, or to set the position of the water shutoff seal near the lower end of the water outlet hole. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the prior art and to provide a shower head, which solves the technical problem of how to improve the water-stopping effect while ensuring normal water discharge.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A shower head comprises a water outlet plate with a plurality of water outlet holes, a cover plate is fixed above the water outlet plate and a water outlet cavity is formed between the water outlet plate and the cover plate, a water overflow seat is connected to the cover plate, a pumping assembly is provided on the water overflow seat and the water in the water outlet cavity can be pumped out and stored when the water is turned off, and the characteristic is that a protruding retaining ring is provided around each water outlet hole on the upper surface of the water outlet plate, and one or more protruding columns are provided on the upper end surface of each retaining ring and protruded upward, and the upper end surface of the protruding column is close to or close to the lower surface of the cover plate.

[0008] After the water outlet plate and the cover plate are set in this way, the water flow height of the water outlet cavity is limited to the height of the convex column. After the convex column limits the water flow height, it can prevent the cover plate from deforming during processing, assembly and use, and from abutting against the retaining ring or having a small spacing, which affects the normal water flow of the shower. In this way, there is no need to reserve more design margins for the water flow height, and the total height of the water outlet cavity can be limited to a lower value (i.e., the water outlet cavity is thinner). This shower can make the water outlet cavity into an ultra-thin structure, so that the volume of the water outlet cavity is small to achieve a smaller water storage volume in the water outlet cavity. At the same time, after the water outlet cavity is made into an ultra-thin structure, the limiting structure formed by the retaining ring and the convex column will not cause the cover plate to abut against the upper edge of the water outlet hole, resulting in no water flow from the water outlet hole, thereby ensuring normal water flow.

[0009] When the shower is turned on, the water flows through the water seat and then enters the water outlet cavity, then passes through the water gap between the convex columns, and then flows out from the water outlet hole. When the water is turned off, the pumping assembly pumps out and stores the water in the water seat, the water outlet cavity and the water outlet hole, and the remaining water in the water outlet cavity is blocked by the retaining ring, so that the water in the water outlet cavity can be prevented from flowing out through the water outlet hole, and the water can be prevented from remaining in the water outlet hole and dripping in the form of water droplets, that is, when the water flow stops, the pumping assembly pumps back a part of the stored water (including the remaining water in each water outlet hole) to achieve instantaneous water stopping. When the control valve turns off the water, there is still a large amount of stored water in the water seat and even in the water inlet joint connected to the water seat. During the pumping process, the pumping assembly needs to pump out and store a large amount of stored water in the water seat and even in the water inlet joint, but the capacity of the pumping assembly is limited, and the amount of stored water actually extracted from the water outlet cavity by the pumping assembly is small. If the amount of water stored in the water outlet cavity is too much, the water in the water outlet hole cannot be pumped back, resulting in the possibility of dripping. The shower head has an ultra-thin water outlet cavity due to the limiting structure of the convex column. The water storage volume of the water outlet cavity is small, which can ensure that all the water in the water outlet hole is pumped back. The water blocking effect of the retaining ring can further ensure that the water remaining in the water outlet cavity will not re-enter the water outlet hole, thereby improving the water stopping effect. In addition, the setting of the convex column can also prevent the suction force generated by the pumping component during the pumping process after the water is turned off from causing the cover plate and the retaining ring to be close to each other or the distance between them is too small, resulting in the water in the water outlet hole being unable to be pumped back, thereby ensuring normal water discharge and improving the water stopping effect.

[0010] Therefore, the shower head can be made into an ultra-thin structure for the water outlet cavity, thereby ensuring normal water outlet and improving the water stopping effect.

[0011] In the above shower head, the protrusion is cylindrical and the diameter of the protrusion is equal to the radial thickness of the retaining ring.

[0012] This allows water to flow out more smoothly through the convex column to ensure normal water flow, and at the same time allows the water in the water outlet to be smoothly drawn back when the water is turned off, reducing the possibility of water stagnation in the water outlet hole and improving the water stopping effect. In addition, the structural strength of the convex column can be ensured, so that the existence of the convex column is conducive to the formation of an ultra-thin structure of the water outlet cavity, ensuring normal water flow and improving the water stopping effect.

[0013] In the above shower head, the edge of the water outlet plate has an upwardly protruding wall, the cover plate is flat and the edge of the cover plate abuts against the upper end surface of the wall to form a seal, and the upper end surface of the protrusion is flush with or lower than the upper end surface of the wall.

[0014] The wall has a water-blocking effect, preventing water from leaking from the edges of the water outlet plate and the cover plate. When the upper end surface of the convex column is flush with the upper end surface of the wall, the upper end surface of the convex column is in contact with the cover plate, so that the convex column and the cover plate can form a supporting effect, making the water outlet cavity structure between the water outlet plate and the cover plate stable, and making the water outlet cavity an ultra-thin structure, thereby achieving normal water outlet and instant shut-off and stop effects. If the upper end surface of the convex column is lower than the upper end surface of the wall, the convex column can be close to the cover plate, which also has the effect of limiting the water flow height, making the water outlet cavity an ultra-thin structure, achieving normal water outlet and instant shut-off and stop effects, and at the same time, a clearance margin can be formed between the cover plate and the convex column to avoid the problem that the cover plate and the wall cannot be sealed due to processing errors or deformation caused by the convex column being too high.

[0015] In the above shower head, the upper surface of the water outlet plate is also provided with several protruding water retaining rings, the upper end surface of the water retaining ring is flush with the upper end surface of the surrounding wall, and the lower surface of the cover plate abuts against the upper end surface of the water retaining ring to form a seal.

[0016] The water retaining ring can reduce the volume of the water outlet cavity and the amount of water stored in the water outlet cavity, thereby improving the water stopping effect. In addition, the water retaining ring also provides support for the cover plate, reducing the deformation of the cover plate and affecting the normal water outlet and the instant stop effect, which is conducive to improving the water stopping effect while ensuring normal water outlet.

[0017] In the above-mentioned shower head, the water drain seat is cylindrical, there are several pumping assemblies fixed circumferentially on the outer side of the water drain seat, a cup-shaped inverted flow guide is fixed inside the water drain seat, and a water flow channel is formed between the outer side of the flow guide and the water drain seat.

[0018] When the water is flowing, since a cup-shaped inverted guide piece is fixed in the water-passing seat, the water will pass through the guide piece on the outer side of the cup-shaped guide piece when passing through the guide piece, reducing the turbulence and turbulence of the water flow in the water-passing seat, and then enter the water outlet cavity, so that the shower head can discharge water normally. When the water is turned off, the pumping assembly draws out and stores the water in the water-passing seat, the water outlet cavity and the water outlet hole. The arrangement of the guide piece forms a cylindrical water-passing channel in the water-passing seat, so that the water flow is dispersed and closer to the pumping assembly, so that the pumping assembly can pump water faster, and at the same time, it can also occupy a part of the internal space of the water-passing seat, reducing the amount of water stored in the water-passing seat, so that more water stored in the water outlet cavity can be pumped into the pumping assembly, so as to ensure that all the water in the water outlet hole is pumped back, and improve the water-stopping effect.

[0019] In the above-mentioned shower head, a partition wall is arranged in the water overflow seat above the connection point between the water overflow seat and the water pumping assembly, and a plurality of water overflow holes are opened in the partition wall. The water overflow holes are located above the flow guide and on the outside of the flow guide. The upper end of the flow guide is fixedly connected to the partition wall, and the lower end of the flow guide is abutted against the upper surface of the water outlet plate.

[0020] When the shower is turned on, the water flow is accelerated through the small water hole and generates negative pressure on the pumping component, causing the pumping component to move and store energy; when the water is turned off, the negative pressure disappears, and the energy stored in the pumping component is released, causing the pumping component to pump out and store water in the water seat, the water outlet cavity and the water outlet hole, achieving instant shut-off and stop.

[0021] When water is flowing, since the water-passing hole is located above the guide member and outside the guide member, and the lower end of the guide member is close to the water outlet plate, the water flowing out of the water-passing hole first passes through the guide of the cup-shaped outer side of the guide member, and then turns to enter the water outlet cavity more smoothly from the lower end of the guide member, reducing the turbulence and turbulence of the water flow in the water-passing hole and at the connection between the water-passing hole and the water outlet cavity after the water flows out of the water-passing hole, so that the shower head can discharge water normally. At the same time, the lower end of the guide member is close to the water outlet plate, so that the guide member occupies part of the spatial volume of the water outlet cavity, which can reduce the water storage volume of the water outlet cavity. When the water pumping volume of the pumping assembly remains unchanged, the water storage volume of the water outlet cavity is reduced to ensure that all the water in the water outlet hole is pumped back, thereby improving the water stopping effect.

[0022] In the above-mentioned shower head, the outer side surface of the upper end of the water drain seat is provided with a rest shoulder, the upper end of the water drain seat is provided with a locking sleeve above the rest shoulder, the upper end of the water drain seat is provided with a water inlet joint inserted and threadedly connected, the outer side surface of the water inlet joint is provided with a stop shoulder above the water drain seat, the upper end of the locking sleeve is rested on the stop shoulder, and an elastic gasket is provided between the locking sleeve and the rest shoulder.

[0023] When tightening the water inlet joint, the shoulder abuts against the upper end of the locking sleeve so that the elastic washer is pressed between the locking sleeve and the abutting shoulder. The elastic force of the elastic washer acts on the water inlet joint to lock the threads between the water inlet joint and the water outlet seat, which has the effect of preventing loosening and makes the connection between the water inlet joint and the water outlet seat stable. In addition, the setting of the locking sleeve and the elastic washer also reduces the process difficulty of the water outlet seat.

[0024] In the above-mentioned shower head, the shower head also includes a bottom shell and a top cover, the water outlet plate and the cover plate are fixedly connected to the bottom shell, the outer surface of the upper end of the water overflow seat is located below the abutting shoulder and also has a positioning shoulder, the top cover is sleeved on the outer side of the water overflow seat and abuts on the positioning shoulder, and the elastic gasket is located above the top cover and abuts on the top cover.

[0025] When tightening the water inlet joint, the elastic washer abuts against the top cover to fix the top cover between the positioning shoulder and the elastic washer. The setting of the locking sleeve and the elastic washer not only prevents the water inlet joint from loosening, making the water inlet joint and the water outlet seat connected stably, but also can be used to fix the top cover, making the top cover easy to install and stable, and making the overall structure of the shower simple.

[0026] In the above-mentioned shower head, the cover plate is also fixedly connected with a plurality of support sleeves located above the cover plate, and the top cover is located above the support sleeves and abuts against the upper end surface of the support sleeves.

[0027] The support sleeve supports the top cover, making it stable when installed in the shower. In addition, if the upper end surface of the support sleeve is not flush with the height of the positioning shoulder, the top cover may be deformed by the compression of the elastic gasket. The elastic force generated by the deformation of the top cover can also further act on the water inlet joint to lock the threads between the water inlet joint and the water outlet seat, making the connection between the water inlet joint and the water outlet seat more stable.

[0028] In the above-mentioned shower head, the water outlet holes are arranged in a matrix on the water outlet plate, an L-shaped baffle is provided between two adjacent rows of water outlet holes, a water-passing gap is provided between adjacent baffles, the upper end surface of the baffle is flush with the upper end surface of the convex column, and one end of the long side of the baffle is integrally connected to the wall.

[0029] On the one hand, the baffle can occupy a certain amount of water outlet cavity space, reducing the amount of water stored in the water outlet cavity, thereby improving the water-stopping effect; on the other hand, it can also form a water-blocking stratification effect when the shower head is tilted, preventing all the water from concentrating at the lowest point and causing leakage, thereby ensuring the water-stopping effect.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] 1. The upper end surface of the retaining ring has a convex column, and the upper end surface of the convex column is close to or close to the lower surface of the cover plate, and the water outlet cavity forms an ultra-thin structure, which improves the water stopping effect while ensuring that the flow channel is unobstructed and water can be discharged normally.

[0032] 2. A guide piece is fixed on the water seat, which not only has a guide function, but also can reduce the amount of stored water that may flow out when the water is turned off, and make the pumping component pump water faster, thereby improving the water-stopping effect.

[0033] 3. The locking sleeve and elastic gasket are provided, which not only ensures the stable connection between the water inlet joint and the water outlet seat, but also serves to fix the top cover, so that the top cover can be easily installed and the connection is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional diagram of the first embodiment of the shower head.

[0035] Figure 2 It is a cross-sectional view of the first embodiment of the shower head.

[0036] Figure 3 yes Figure 2 A partial enlarged view of the water seat in the middle.

[0037] Figure 4 It is a three-dimensional diagram of the water outlet plate in the first embodiment of the shower head.

[0038] Figure 5 This is a three-dimensional diagram of the shower head embodiment 1 after the bottom shell is hidden.

[0039] Figure 6 It is a three-dimensional diagram of the first embodiment of the shower head after the top cover is hidden.

[0040] Figure 7 yes Figure 6 Local cross-sectional view along the AA direction.

[0041] Figure 8 It is a three-dimensional diagram of the water overflow seat of the first embodiment of the shower head.

[0042] In the figure, 1, bottom shell; 2, top cover; 3, water outlet plate; 3a, water outlet hole; 3b, retaining ring; 3c, convex column; 3d, wall; 3e, sealing lip; 3f, retaining bar; 3g, water gap; 3h, water retaining ring; 3k, avoidance groove; 3j, water outlet nozzle; 4, cover plate; 5, water outlet cavity; 6, water seat; 6a, water hole; 6b, partition wall; 6c, water hole; 6d, through hole; 6e, Abut shoulder; 6f, positioning shoulder; 7, pumping assembly; 7a, cylinder; 7b, piston; 7c, spring; 7d, guide rod; 8, water inlet joint; 8a, shoulder; 9, ball head assembly; 10, locking sleeve; 11, elastic gasket; 12, connecting column; 13, supporting sleeve; 14, guide piece; 15, water passage; h1, height of retaining ring; h2, height of boss; h3, height of wall. DETAILED DESCRIPTION

[0043] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0044] Embodiment 1

[0045] like Figure 1 and Figure 2 As shown, a shower head comprises a bottom shell 1 with an opening at the upper end and a top cover 2 located at the upper end of the bottom shell 1 to cover the upper end of the bottom shell 1. A water outlet plate 3 and a cover plate 4 are fixed in the bottom shell 1. The cover plate 4 is located above the water outlet plate 3, and a water outlet cavity 5 is formed between the water outlet plate 3 and the cover plate 4. A water overflow seat 6 is fixedly connected at the center of the cover plate 4, and four pumping assemblies 7 are fixedly connected on the outer peripheral side of the water overflow seat 6. The pumping assemblies 7 can pump out and store water in the water outlet cavity 5. The upper end of the water overflow seat 6 extends out of the top cover 2 and is fixedly connected to a water inlet joint 8. A ball head assembly 9 is installed on the upper end of the water inlet joint 8, and a locking sleeve 10 is sleeved on the outer side of the upper end of the water overflow seat 6.

[0046] like Figure 2 , Figure 3 and Figure 4As shown, the water outlet plate 3 is made of rubber material and is a sheet-like thin plate structure. The water outlet plate 3 is roughly rectangular, and there are several avoidance grooves 3k at the outer edge of the water outlet plate 3. There are several water outlet holes 3a on the water outlet plate 3, and the water outlet holes 3a are arranged in a matrix. The upper part of the water outlet hole 3a is conical and the lower part is circular, which can reduce the water flow resistance and increase the structural strength of the rubber water outlet plate 3 mold. A protruding retaining ring 3b is arranged around each water outlet hole 3a on the upper surface of the water outlet plate 3, and each retaining ring 3b has one or 2-4 spaced and upwardly protruding protrusions 3c on the upper end surface, and the upper end surface of the protrusion 3c is close to or close to the lower surface of the cover plate 4. The protrusion 3c is cylindrical and the diameter of the protrusion 3c is equal to the radial thickness of the retaining ring 3b, and the height h1 of the retaining ring 3b is greater than the height h2 of the protrusion 3c. The edge of the water outlet plate 3 has a circle of upwardly protruding walls 3d, and the upper end surface of the protruding column 3c is flush with or lower than the upper end surface of the wall 3d. The height difference between the upper end surface of the protruding column 3c and the upper end surface of the wall 3d is between 0.0mm-0.2mm, for example, the height of the wall 3d is 3mm, the height of the retaining ring 3b is 2mm, the height h2 of the protruding column 3c is 1.0mm-0.8mm, the water passing height is 1mm, and the water outlet cavity 5 is made into an ultra-thin structure, which can not only ensure the smooth flow of water to achieve normal water flow, but also make the amount of water that can flow out as small as possible, thereby improving the water stopping effect. The height of the retaining ring 3b can raise the upper edge of the water outlet hole 3a, reduce the amount of water that may flow out of the water outlet cavity 5 when the shower is closed while keeping the flow channel unobstructed, and improve the water stopping effect; at the same time, it also has a rectifying effect, so that the water splash effect of each water outlet hole 3a is close to the same. The upper surface of the water outlet plate 3 is also provided with four protruding water retaining rings 3h, and the upper end surface of the water retaining ring 3h is flush with the upper end surface of the wall 3d. The upper end surface of the wall 3d and the upper end surface of the water retaining ring 3h are both provided with two circles of protruding sealing lips 3e, and the cross section of the sealing lips 3e is semicircular, and the sealing lips 3e are used to improve the sealing between the wall 3d of the water outlet plate 3 and the cover plate 4, and between the water retaining ring 3h and the cover plate 4. The retaining ring 3b close to the wall 3d is connected to the wall 3d as a whole, and the retaining ring 3b close to the water retaining ring 3h is connected to the water retaining ring 3h as a whole. In this way, the structural strength of the wall 3d and the water retaining ring 3h can be improved, and the structure of the water outlet plate 3 can be stabilized. An L-shaped baffle 3f is arranged between two adjacent rows of water outlet holes 3a, and a water-passing gap 3g is provided between adjacent baffles 3f. The upper end surface of the baffle 3f is flush with the upper end surface of the protruding column 3c, and one end of the long side of the baffle 3f is integrally connected to the surrounding wall 3d.

[0047] like Figure 5 , Figure 6 and Figure 7As shown, the bottom shell 1 includes a rectangular bottom wall in the shape of a flat plate and a side wall arranged on the outer edge of the bottom wall. A plurality of connecting columns 12 are fixed on the upper surface of the bottom wall, and the connecting columns 12 are located in the avoidance groove 3k. The lower surface of the water outlet plate 3 is abutted against the bottom wall of the bottom shell 1. The lower surface of the water outlet plate 3 has a water outlet nozzle 3j corresponding to the water outlet hole 3a. The water outlet hole 3a is arranged on the water outlet nozzle 3j, and the water outlet nozzle 3j passes through the bottom wall of the bottom shell 1 and extends out. The cover plate 4 is in the shape of a rectangular flat plate. The cover plate 4 is connected with screws corresponding to the connecting columns 12. The screws pass through the cover plate 4 and are threadedly connected with the connecting columns 12. After tightening the screws, the edge of the cover plate 4 abuts against the upper end surface of the enclosure 3d and forms a seal. The lower surface of the cover plate 4 abuts against the upper end surface of the water retaining ring 3h and forms a seal. At the same time, the cover plate 4 and the water outlet plate 3 are fixed to the bottom shell 1. Support sleeves 13 are respectively arranged on the four corners close to the cover plate 4. A fixing ring is provided on the inner side surface of the lower end of the support sleeve 13. The screws pass through the support sleeve 13 and the cover plate 4 and are threadedly connected with the connecting column 12. The head of the screw is located above the fixing ring and abuts against the fixing ring. The screws fix the support sleeve 13, the cover plate 4 and the water outlet plate 3 on the bottom shell 1.

[0048] like Figure 6 , Figure 7 and Figure 8 As shown, the water-passing seat 6 is a cylindrical structure, and the water-passing seat 6 is fixedly connected to the cover plate 4 by four countersunk screws, and the countersunk screws are fixedly connected to the water-passing seat 6 after passing through the cover plate 4. The lower end of the water-passing seat 6 is inserted into the cover plate 4 and a sealing ring is arranged between the cover plate 4. The center of the water-passing seat 6 has a cylindrical water-passing hole 6a, and a partition wall 6b is arranged in the water-passing hole 6a, and a plurality of water-passing holes 6c are opened on the partition wall 6b. Four through holes 6d are opened on the side wall of the water-passing seat 6 below the partition wall 6b, and the four through holes 6d correspond to the four pumping components 7 one by one, and the four through holes 6d are evenly arranged along the circumferential direction and are located at the same height. When water passes through the water-passing holes 6c, it is accelerated, and negative pressure is formed according to the Bernoulli principle. A group of water holes 6c corresponds to the top of each through hole 6d on the partition wall 6b. A group of water holes 6c generally consists of two or three water holes 6c. This can achieve a higher water flow rate than evenly arranging the water holes 6c in a whole circle, can make the area with lower negative pressure more concentrated, and can also reduce water flow noise.

[0049] like Figure 2 , Figure 6 and Figure 8As shown, the pumping assembly 7 includes a cylinder 7a, a piston 7b and a spring 7c. The inner end of the cylinder 7a is fixedly connected to the side wall of the water-passing seat 6 and forms a seal. The inner cavity of the cylinder 7a is connected to the through hole 6d, and the outer end of the cylinder 7a has a vent. The inner end of the cylinder 7a is inserted into the side wall of the water-passing seat 6. The outer side surface of the inner end of the cylinder 7a has two lugs, which are fixedly connected to the water-passing seat 6. The piston 7b is slidably installed in the cylinder 7a and divides the inner cavity of the cylinder 7a into an air cavity connected to the vent and a pumping cavity connected to the through hole 6d. The spring 7c is installed in the pumping cavity, and the two ends of the spring 7c are respectively against the piston 7b and the water-passing seat 6. A guide rod 7d is also provided in the pumping cavity. The guide rod 7d is fixedly connected to the water-passing seat 6, and the spring 7c is sleeved on the guide rod 7d. The guide rod 7d guides the spring 7c to prevent the spring 7c from losing stability when compressed. The spring 7c is tapered, which increases the stability of the spring 7c.

[0050] like Figure 3 and Figure 7 As shown, a guide member 14 is fixed in the water hole 6a, which is cup-shaped and inverted, and the outer diameter of the lower end increases from top to bottom. A cylindrical water passage 15 is formed between the outer side of the guide member 14 and the water seat 6. The main body of the guide member 14 is cylindrical, and the lower end is a trumpet-shaped that increases outward. The partition wall 6b is located above the guide member 14, and the water hole 6c is located outside the guide member 14 and is arranged around the guide member 14. The lower end of the guide member 14 is against the upper surface of the water outlet plate 3, and the upper end of the guide member 14 is against the partition wall 6b and fixedly connected. The outer side surface of the upper end of the water seat 6 has a shoulder 6e and a positioning shoulder 6f located below the shoulder 6e. The top cover 2 is mounted on the outer side of the shoulder 6e and against the positioning shoulder 6f. The locking sleeve 10 is located above the shoulder 6e. A water inlet connector 8 is inserted and threadedly connected to the upper end of the water outlet seat 6. A stop shoulder 8a is provided on the outer side of the water inlet connector 8 above the water outlet seat 6. The upper end of the locking sleeve 10 abuts against the stop shoulder 8a. An elastic washer 11 is provided between the locking sleeve 10 and the abutting shoulder 6e. The elastic washer 11 is located above the top cover 2 and abuts against the top cover 2 and the abutting shoulder 6e. Figure 2 As shown, the top cover 2 is located above the support sleeve 13 and abuts against the upper end surface of the support sleeve 13. A receiving groove is provided on the lower end surface of the locking sleeve 10, and the elastic gasket 11 is installed in the receiving groove. An inner ring groove is also provided on the inner side surface of the locking sleeve 10 above the receiving groove for weight reduction. A protruding convex ring is provided on the upper end surface of the locking sleeve 10, and the convex ring abuts against the shoulder 8a, so that the locking sleeve 10 and the water inlet joint 8 abut against each other stably.

[0051] When assembling the shower head, weld the connecting column 12 to the bottom wall of the bottom shell 1, put the water outlet plate 3 into the bottom shell 1, and insert the water outlet nozzle 3j on the water outlet plate 3 into the bottom wall of the bottom shell 1, fix the guide member 14 and the water pumping assembly 7 to the water overflow seat 6, and then fix the water overflow seat 6 to the cover plate 4; then cover the cover plate 4 on the water outlet plate 3, and then connect the screws and the support sleeve 13 to fix the cover plate 4 and the water outlet plate 3 on the bottom shell 1; then put the top cover 2, the elastic gasket 11 and the locking sleeve 10 on the upper end of the water overflow seat 6 in sequence, and then insert the water inlet joint 8 into the upper end of the water overflow seat 6 and tighten it, so that the top cover 2 and the water inlet joint 8 are fixed, and finally install the ball head assembly 9 on the water inlet joint 8. The shower head has a simple and compact structure and is easy to assemble.

[0052] When the shower is turned on, water enters the water seat 6 from the water inlet joint 8. When the water flows through the water hole 6c, it accelerates and generates negative pressure. The piston 7b in the pumping assembly 7 moves toward the water seat 6 under the action of atmospheric pressure, compressing the spring 7c. The water flows through the water passage 15 and enters the water outlet cavity 5, then passes through the water gap between the convex columns 3c, and finally flows out from the water outlet hole 3a. After the shower is turned off, the negative pressure in the water seat 6 disappears. Under the action of the elastic force of the spring 7c, the piston 7b moves outward and resets. The water in the water inlet joint 8, the water seat 6, the water outlet cavity 5 and the water outlet hole 3a is pumped into the pumping cavity of the cylinder 7a of the pumping assembly 7 and stored. The shower stops water instantly and no water drops fall from the water outlet 3a. The normal water discharge is ensured while the water stopping effect is improved.

[0053] Embodiment 2

[0054] The structure is basically the same as that of the first embodiment, except that: one, two or three protruding columns 3c are arranged on each retaining ring 3b.

[0055] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A shower head, comprising a water outlet plate (3) having a plurality of water outlet holes (3a), a cover plate (4) being fixed above the water outlet plate (3) and a water outlet cavity (5) being formed between the water outlet plate (3) and the cover plate (4), a water outlet seat (6) being connected to the cover plate (4), and a pumping assembly (7) being provided on the water outlet seat (6) for pumping out and storing water in the water outlet cavity (5) when the water is turned off, characterized in that: A protruding retaining ring (3b) is provided on the upper surface of the water outlet plate (3) around each water outlet hole (3a), and the upper end surface of each retaining ring (3b) has one or more protruding columns (3c) arranged at intervals and protruding upwards, and the upper end surface of the protruding column (3c) is in contact with or close to the lower surface of the cover plate (4).

2. The shower head according to claim 1, characterized in that: The protruding column (3c) is cylindrical, and the diameter of the protruding column (3c) is equal to the radial thickness of the retaining ring (3b).

3. The shower head according to claim 1, characterized in that: The edge of the water outlet plate (3) is provided with an upwardly protruding wall (3d); the cover plate (4) is in the shape of a flat plate and the edge of the cover plate (4) abuts against the upper end surface of the wall (3d) to form a seal; the upper end surface of the protruding column (3c) is flush with or lower than the upper end surface of the wall (3d).

4. The shower head according to claim 3, characterized in that: The upper surface of the water outlet plate (3) is also provided with a plurality of protruding water retaining rings (3h), the upper end surface of the water retaining ring (3h) is flush with the upper end surface of the surrounding wall (3d), and the lower surface of the cover plate (4) abuts against the upper end surface of the water retaining ring (3h) to form a seal.

5. The shower head according to any one of claims 1 to 4, characterized in that: The water-passing seat (6) is cylindrical, and the pumping assemblies (7) are in plurality and fixed to the outer surface of the water-passing seat (6) along the circumferential direction. A cup-shaped inverted flow guide (14) is fixed inside the water-passing seat (6), and a water-passing channel (15) is formed between the outer side surface of the flow guide (14) and the water-passing seat (6).

6. The shower head according to claim 5, characterized in that: A partition wall (6b) is provided in the water-passing seat (6) above the connection between the water-passing seat (6) and the pumping assembly (7), the partition wall (6b) being provided with a plurality of water-passing holes (6c), the water-passing holes (6c) being located above the flow-guiding member (14) and outside the flow-guiding member (14), the upper end of the flow-guiding member (14) being fixedly connected to the partition wall (6b), and the lower end of the flow-guiding member (14) being in contact with the upper surface of the water outlet plate (3).

7. The shower head according to any one of claims 1 to 4, characterized in that: The outer surface of the upper end of the water overflow seat (6) has a shoulder (6e) on its outer side, and the upper end of the water overflow seat (6) is sleeved with a locking sleeve (10) above the shoulder (6e). The upper end of the water overflow seat (6) is inserted with a water inlet joint (8) and is threadedly connected thereto. The outer surface of the water inlet joint (8) is provided with a shoulder (8a) above the water overflow seat (6), and the upper end of the locking sleeve (10) is pressed against the shoulder (8a). An elastic washer (11) is provided between the locking sleeve (10) and the shoulder (6e).

8. The shower head according to claim 7, characterized in that: The shower head further comprises a bottom shell (1) and a top cover (2); the water outlet plate (3) and the cover plate (4) are fixedly connected to the bottom shell (1); the outer surface of the upper end of the water outlet seat (6) is provided with a positioning shoulder (6f) below the abutting shoulder (6e); the top cover (2) is sleeved on the outer side of the water outlet seat (6) and abuts against the positioning shoulder (6f); and the elastic gasket (11) is located above the top cover (2) and abuts against the top cover (2).

9. The shower head according to claim 8, characterized in that: The cover plate (4) is also fixedly connected to a plurality of support sleeves (13) located above the cover plate (4), and the top cover (2) is located above the support sleeves (13) and abuts against the upper end surface of the support sleeves (13).

10. The shower head according to any one of claims 1 to 4, characterized in that: The water outlet holes (3a) are arranged in a matrix on the water outlet plate (3); an L-shaped baffle (3f) is provided between two adjacent rows of water outlet holes (3a); a water-passing gap (3g) is provided between adjacent baffles (3f); the upper end surface of the baffle (3f) is flush with the upper end surface of the convex column (3c); and one end of the long side of the baffle (3f) is integrally connected to the surrounding wall (3d).

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