A cleaning brush that prevents leaks and improves the user experience

Abstract

This utility model discloses a leak-proof cleaning brush that improves the user experience. It includes: a lower assembly comprising a soft rubber brush tooth cover, a retaining ring, and a rigid pressure plate; the soft rubber brush tooth cover has a cover body and several comb teeth; the cover body has a slit-type liquid outlet; the retaining ring has a first circumferential thread, the soft rubber brush tooth cover is mounted on the retaining ring, and the rigid pressure plate abuts against the top of the soft rubber brush tooth cover; and an upper assembly comprising a liquid storage chamber body and a liquid outlet pressure control valve mounted on the periphery of the liquid storage chamber body; the liquid storage chamber body has a second circumferential thread; the upper assembly is detachably threaded to the lower assembly, and the first and second circumferential threads are threadedly connected to each other. This design solves the problems of leakage and cumbersome filling at the liquid outlet pressure control valve in traditional technologies. Furthermore, the peripherally located liquid outlet pressure control valve allows for direct finger pressing during use, controlling liquid dispensing as you brush, resulting in a more ergonomic user experience.

Description

Technical Field

[0001] This utility model relates to the field of cleaning and care appliances, and in particular to a cleaning brush that prevents leakage and improves the user experience. Background Technology

[0002] Massage brushes, commonly used for bathing and shampooing, contain shampoo or shower gel. When brushing, the shampoo or shower gel is dispensed. The comb teeth function to create foam, cleanse, and massage, thus leading to their widespread use.

[0003] CN 220327036 U discloses a bathing and shampooing massage brush, including a body, an elastic surface that can be elastically deformed on one side of the body, a cavity inside the body, comb teeth extending outward from the outer side of the elastic surface, a partition connected to the inner side of the elastic surface, the partition dividing the cavity into a first chamber and a second chamber, the partition and the elastic surface forming the first chamber, the partition having fine holes evenly distributed, the fine holes connecting the first chamber and the second chamber, the elastic surface having a first through hole communicating with the cavity, and when the elastic surface is pressed, it causes the partition to squeeze the second chamber. In use, first, hold the handle and invert the main body so that the first through hole faces upwards. Add an appropriate amount of shampoo and water into the chamber through the first through hole to form a mixture. Then, press the comb teeth. The comb teeth act on the elastic surface, causing it to indent inwards. At this time, the partition is pushed into the second chamber, reducing the space of the second chamber. Due to the tight fit between the outer wall of the truncated cone and the inner wall of the flange, the mixture cannot flow out through the second through hole. The mixture can only flow from the second chamber into the first chamber through the fine holes on the partition. When the external force is removed, the elastic surface will elastically return to its original position, causing the partition to return to its original position. The space of the second chamber expands and returns to its original state. The mixture flows back from the first chamber into the second chamber through the fine holes. This process is repeated. Because the flow rate of the mixture increases when passing through the fine holes, it creates turbulence and produces foam.

[0004] However, it still has some shortcomings. The liquid filling operation is more troublesome. After mixing the liquid, it must be used up at once. It cannot control the liquid to be dispensed while brushing, and it cannot flexibly control the liquid dispensing volume as needed.

[0005] In existing technology, there is another type of cleaning brush that uses a liquid dispensing pressure control valve at the top of the main body. Pressing this valve increases the internal air pressure, squeezing out some liquid from between the comb teeth at the bottom. However, the liquid is dispensed through the dispensing pressure control valve. This means that whenever liquid is used up and needs to be added, the dispensing pressure control valve (equivalent to a stopper) must be opened, liquid added, and then the valve reattached to the main body. This repeated opening and closing operation makes it difficult to ensure a tight seal, especially considering ease of disassembly and reassembly. This leads to easy leakage during use. Furthermore, because the dispensing pressure control valve is difficult to maintain a tight seal with the main body, the airtightness is poor, and the control sensitivity is not ideal when pressing the valve.

[0006] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0007] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a cleaning brush that prevents leakage and improves the user experience. Its structure is simple, easy to manufacture and assemble, and cleverly solves the problems of leakage at the liquid dispensing pressure control valve and the inconvenience of filling the liquid in the traditional technology. At the same time, the liquid dispensing pressure control valve set on the periphery can be pressed directly with the fingers when holding and using the brush, and the liquid dispensing can be controlled as the brush is brushed, making the user experience more ergonomic.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A leak-proof and user-friendly cleaning brush includes:

[0010] The lower part of the assembly includes a soft rubber brush tooth cover, a retaining ring, and a rigid pressure plate. The soft rubber brush tooth cover has a cover body and a plurality of comb teeth integrally protruding from the bottom of the cover body. The cover body is provided with a slit-type liquid outlet. The retaining ring is provided with a first circumferential thread. The soft rubber brush tooth cover is mounted on the retaining ring, and the comb teeth and the slit-type liquid outlet are exposed below the retaining ring. The rigid pressure plate abuts against the top of the soft rubber brush tooth cover to clamp and fix the soft rubber brush tooth cover between the rigid pressure plate and the retaining ring.

[0011] The upper part of the component includes a liquid storage chamber body and a liquid outlet pressure control valve installed on the periphery of the liquid storage chamber body; the liquid storage chamber body is provided with a second circumferential thread;

[0012] The upper component is detachably threaded to the lower component, and the first circumferential thread and the second circumferential thread are threadedly connected to each other.

[0013] As a preferred embodiment, the periphery of the liquid storage chamber body is provided with an installation window that extends inward through the inner cavity of the liquid storage chamber body. The liquid dispensing pressure control valve includes a pressure ring and an outwardly convex soft rubber. The interior of the outwardly convex soft rubber forms a concave cavity that conforms to the outward convex shape. The outwardly convex soft rubber is installed corresponding to the installation window, and the pressure ring seals and positions the outwardly convex soft rubber on the liquid storage chamber body. The concave cavity communicates with the inner cavity.

[0014] As a preferred embodiment, a handle is mounted on the top of the liquid storage chamber body.

[0015] As a preferred embodiment, the liquid storage chamber body is provided with an installation cavity, and a first positioning post is provided with an upward protrusion on the inner bottom surface of the installation cavity. The first positioning post is provided with a positioning hole inside, and the positioning hole extends upward through the top of the first positioning post. A locking protrusion is provided on the inner side of the installation cavity, and an installation protrusion ring is provided on the handle. The installation protrusion ring is provided with a locking groove, and a second positioning post is also provided in the area enclosed by the installation protrusion ring. The installation protrusion ring is engaged in the installation cavity, the locking protrusion is engaged in the locking groove, and the second positioning post is embedded in the positioning hole.

[0016] As a preferred embodiment, the top of the liquid storage chamber body is integrally formed with a handle.

[0017] As a preferred embodiment, the rigid pressure plate is provided with a through hole corresponding to the slit-type liquid outlet.

[0018] As a preferred embodiment, a first positioning ring is provided on the top of the cover body corresponding to the outer periphery of the slit-type liquid outlet, and support rings are also provided at intervals on the top of the cover body corresponding to the outer periphery of the first positioning ring. A second positioning ring is provided on the bottom of the rigid pressure plate corresponding to the outer periphery of the through hole. The second positioning ring is embedded in the first positioning ring, and the upper end of the support ring abuts against the bottom of the rigid pressure plate.

[0019] As a preferred embodiment, the rigid pressure plate has a pressing ring extending downward from its outer periphery, and a first positioning protrusion extending radially outward from its outer periphery. Correspondingly, the periphery of the cover body has an integrally extending positioning outer ring extending upward, and an annular groove is provided on the inner periphery of the positioning outer ring. The pressing ring presses onto the cover body, and the first positioning protrusion is engaged in the annular groove.

[0020] As a preferred embodiment, the bottom end of the fixing ring extends radially inward to form a supporting ring edge, and the bottom periphery of the cover body abuts against the supporting ring edge.

[0021] As a preferred embodiment, the inner ring of the fixing ring is provided with a first annular step portion, and the outer circumference of the positioning outer ring extends radially outward with a second positioning protrusion, the second positioning protrusion abutting against the first annular step portion. An annular gap with an upper opening is maintained between the fixing ring and the positioning outer ring. The bottom end of the liquid storage cavity body extends downward with an annular extension portion, and the bottom end of the liquid storage cavity body retains a second annular step portion located on the outer circumference of the annular extension portion. The second circumferential thread is an external thread and is provided on the outer circumference of the annular extension portion, the first circumferential thread is an internal thread and is provided on the inner circumference of the fixing ring, and the annular extension portion extends into the annular gap.

[0022] Compared with existing technologies, this utility model has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly solves the problems of leakage and cumbersome filling of the cleaning brush by designing it as a two-part component with threaded connection, using a threaded disassembly method for liquid filling. The liquid dispensing pressure control valve is located on the periphery of the liquid storage chamber body, which is easy to seal and install without disassembly, and prevents leakage at this location. This cleverly solves the problems of leakage and cumbersome liquid filling at the liquid dispensing pressure control valve in traditional technologies. The control of the liquid dispensing pressure control valve is more precise. At the same time, the peripherally located liquid dispensing pressure control valve is easy to press directly with fingers while holding and using, controlling the liquid dispensing as you brush, making the user experience more ergonomic. Furthermore, this cleaning brush has a simple structure and is easy to manufacture and assemble.

[0023] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a three-dimensional view of a cleaning brush that prevents leakage and improves the user experience, according to an embodiment of the present invention.

[0025] Figure 2 This is a three-dimensional view from another angle of the cleaning brush that prevents leakage and improves the user experience, according to an embodiment of the present invention.

[0026] Figure 3 This is a top view of a cleaning brush that prevents leakage and improves the user experience according to an embodiment of the present invention;

[0027] Figure 4 This is a detailed exploded view of a cleaning brush that prevents leakage and improves the user experience, according to an embodiment of the present invention.

[0028] Figure 5 Another detailed exploded view of the cleaning brush that prevents leakage and improves the user experience, which is an embodiment of this utility model;

[0029] Figure 6 yes Figure 3 Cross-sectional view at point AA;

[0030] Figure 7 This is an exploded view of the upper and lower components of a cleaning brush that prevents leakage and improves the user experience according to an embodiment of the present invention (disassembled state when filled with liquid).

[0031] Figure 8 This is another exploded view of the upper and lower components of a cleaning brush that prevents leakage and improves the user experience, according to an embodiment of the present invention.

[0032] Figure 9 yes Figure 6 A magnified view of a portion of the image;

[0033] Figure 10 yes Figure 6 Another enlarged view of a portion;

[0034] Figure 11 This is a perspective view of a cleaning brush that prevents leakage and improves the user experience, according to another embodiment of this utility model.

[0035] Figure 12 This is a perspective view of another embodiment of the cleaning brush that prevents leakage and improves the user experience.

[0036] Figure 13 This is a top view of a cleaning brush that prevents leakage and improves the user experience, according to another embodiment of the present invention.

[0037] Figure 14 This is a detailed exploded view of a cleaning brush that prevents leakage and improves the user experience, according to another embodiment of the present invention.

[0038] Figure 15 Another detailed exploded view of a cleaning brush that prevents leakage and improves the user experience, according to another embodiment of this utility model;

[0039] Figure 16 yes Figure 13 Cross-sectional view at point BB;

[0040] Figure 17 This is an exploded view (disassembled state when liquid is being filled) of the upper and lower half components of a cleaning brush that prevents leakage and improves the user experience, according to another embodiment of this utility model.

[0041] Figure 18 This is another exploded view of the upper and lower components of a cleaning brush that prevents leakage and improves the user experience, according to another embodiment of the present invention. Detailed Implementation

[0042] Please refer to Figures 1 to 18 As shown, it illustrates the specific structure of various embodiments of the present invention.

[0043] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] A leak-proof and user-friendly cleaning brush includes a lower half assembly and a lower half assembly that are threaded together.

[0045] The lower half of the component includes a soft rubber brush tooth cover 10, a retaining ring 20, and a rigid pressure plate 30. The soft rubber brush tooth cover 10 has a cover body and a plurality of comb teeth 101 integrally protruding from the bottom of the cover body. The entire soft rubber brush tooth cover 10 is integrally manufactured, for example, by injection molding of soft silicone. The comb teeth 101 are tapered, wider at the top and narrower at the bottom. Preferably, hollow holes can be provided inside the comb teeth 101, wherein the lower end of the hollow hole is a blind end, that is, the lower end does not penetrate the comb teeth 101, and it penetrates upward to the upper side of the cover body. This structure makes the comb teeth 101 more flexible and the contact with the body and scalp more soft and comfortable. The cover body is provided with a slit-type liquid outlet 13 (the shape of which can be straight, cross-shaped, etc.). Due to the characteristics of the soft rubber material, the slit is well controlled. The small size allows for a completely closed state without external force, preventing internal liquid leakage. This refers to a naturally closed, leak-proof state, a technology already in use. It primarily involves material deformation control and pressure response. The static sealing principle of the slit closure is based on the fact that soft materials (such as silicone and rubber) are elastic polymers with self-closing properties. Their molecular chains naturally retract when no external force is applied, maintaining the closed state through the material's own elastic deformation. This closure prevents internal liquid from seeping out without external force. Simultaneously, the surface tension and high viscosity of the liquid within the micro-slit create capillary resistance, further enhancing the sealing effect. The liquid will not automatically overflow when not compressed. When external force is applied, the internal liquid pressure increases sharply, exceeding the sum of the elastic retraction force and surface tension of the slit closure, causing the slit to open. The fixing ring 20 is provided with a first circumferential thread 201. The soft rubber brush tooth cover 10 is mounted on the fixing ring 20, and the comb teeth 101 and the slit-type liquid outlet 13 are exposed below the fixing ring 20. The rigid pressure plate 30 abuts against the top of the soft rubber brush tooth cover 10 to clamp and fix the soft rubber brush tooth cover 10 between the rigid pressure plate 30 and the fixing ring 20.

[0046] The upper part of the component includes a liquid storage chamber body 40 and a liquid discharge pressure control valve installed on the periphery of the liquid storage chamber body 40; the liquid storage chamber body 40 is provided with a second circumferential thread 401.

[0047] The upper component is detachably threaded to the lower component to form a cleaning brush; the first circumferential thread 201 and the second circumferential thread 401 are threaded to each other. When the liquid outlet control valve is pressed, the internal cleaning liquid (such as shampoo, shower gel, etc.) is squeezed downwards through the slit-type liquid outlet 13 and leaks out from the bottom of the soft rubber brush tooth cover 10, realizing precise control of "press to dispense, release to stop".

[0048] Furthermore, the periphery of the liquid storage chamber body 40 is provided with an installation window 41 that extends inwardly through the inner cavity 46 of the liquid storage chamber body 40. The liquid dispensing pressure control valve includes a pressure ring 51 and an outwardly protruding soft rubber 52 (e.g., silicone). The inside of the outwardly protruding soft rubber 52 forms a concave cavity that conforms to the outward protrusion. The outwardly protruding soft rubber 52 is installed corresponding to the installation window 41, and the pressure ring 51 seals and positions the outwardly protruding soft rubber 52 on the liquid storage chamber body 40. The concave cavity communicates with the inner cavity 46. When the outwardly protruding soft rubber 52 is pressed inward, its deformation causes the volume of the concave cavity to decrease, thereby reducing the sum of the volumes of the inner cavity 46 and the inner cavity with dynamic pressure changes. Correspondingly, its internal pressure increases. Specifically, an annular recess 411 is provided on the periphery of the liquid storage cavity body 40 around the mounting window 41. An annular groove 412 is further recessed on the annular recess 411. The pressure ring 51 is generally a rigid pressure ring, comprising an inner ring portion 511, a connecting ring 512, an outer ring portion 513, and a pressure ring embedding portion 514. The connecting ring 512 connects the outer end of the inner ring portion 511 and the outer end of the outer ring portion 513, forming a horizontal U-shaped cross-section. The pressure ring embedding portion 514 extends integrally inward from the inner end of the outer ring portion 513, and is arranged circumferentially. Correspondingly, an annular pressure-bearing edge 521 extends integrally outward from the outer periphery of the convex soft rubber 52. Furthermore, an auxiliary positioning protrusion 522 protrudes from the outer periphery of the annular pressure-bearing edge 521 toward the outer side of the mounting window 41. The inner end of the annular pressure-bearing edge 521 abuts against the annular recess 411. The pressure ring 51 is fastened to the annular pressure-bearing edge 521. The inner ring portion 511 of the pressure ring is embedded in the gap between the convex soft rubber 52 and the auxiliary positioning protrusion 522. The inner end of the inner ring portion 511 of the pressure ring abuts against the annular pressure-bearing edge 521. The auxiliary positioning protrusion 522 is adapted to fit in the gap between the inner ring portion 511 and the outer ring portion 513 of the pressure ring. The outer ring portion 513 of the pressure ring is embedded in the gap between the auxiliary positioning protrusion 522 and the inner peripheral side of the annular recess 411. The pressure ring embedding portion 514 is embedded in the annular groove 412 to achieve a tight fit.

[0049] Furthermore, a handle 60 is installed on the top of the liquid storage chamber body 40. The handle 60 and the liquid storage chamber body 40 are two independently manufactured components, and their materials and color schemes can be freely designed. The liquid storage chamber body 40 is provided with an installation cavity 42. A locking protrusion 43 protrudes from the inner side of the installation cavity 42. A first positioning post 44 protrudes upward from the inner bottom surface of the installation cavity 42. A positioning hole 45 is provided inside the first positioning post 44, extending upward through the top of the first positioning post 44. The handle 60 is provided with an installation protrusion ring 61, which has a locking groove 62. A second positioning post 63 is also provided within the area enclosed by the installation protrusion ring 61. The installation protrusion ring 61 is engaged in the installation cavity 42, the locking protrusion 43 is engaged in the locking groove 62, and the second positioning post 63 is embedded in the positioning hole 45. In other embodiments, the handle can also be installed on the liquid storage chamber body by adhesive, ultrasonic welding, screw fastening, or other methods.

[0050] Furthermore, the rigid pressure plate 30 is provided with a through hole 31 corresponding to the slit-type liquid outlet 13. A first positioning ring 11 is provided on the top of the cover body corresponding to the outer periphery of the slit-type liquid outlet 13. A plurality of support rings 12 are also integrally provided at intervals on the top of the cover body corresponding to the outer periphery of the first positioning ring 11. The first positioning ring 11, the support rings 12 and the cover body are integrally made of soft rubber. The entire soft rubber brush tooth cover 10 is made of soft rubber. A second positioning ring 32 is provided at the bottom of the rigid pressure plate 30 corresponding to the outer periphery of the through hole 31. Further, an annular bottom plate is integrally connected to the bottom end of the second positioning ring 32. The central hole 311 of the annular bottom plate is directly opposite the through hole 31. The second positioning ring 32 is embedded in the first positioning ring 11. The upper end of the support ring 12 abuts against the bottom of the rigid pressure plate 30. In this way, a vertical gap is formed between the top of the cover body and the bottom of the rigid pressure plate 30. During use, the soft rubber brush tooth cover 10 has space for vertical floating deformation other than the comb teeth 101, which further improves the comfort of use.

[0051] Typically, a slit-type liquid outlet 13 is designed on a thin-walled section of the cover body. A recessed groove 131 corresponding to the central hole 311 of the annular bottom plate is pre-set on the slit-type liquid outlet 13. The slit-type liquid outlet 13 is located on the bottom wall of the recessed groove 131. A first positioning protrusion 303 extends radially outward from the outer periphery of the rigid pressure plate 30. Specifically, a pressing ring 301 extends downward from the outer periphery of the rigid pressure plate 30. A positioning inner ring 302 protrudes downward from the bottom of the inner edge of the pressing ring 301. The first positioning protrusion 303 extends radially outward from the outer periphery of the pressing ring 301. Correspondingly, a positioning outer ring 102 extends upward integrally from the periphery of the cover body. An annular groove is provided on the inner periphery of the positioning outer ring 102. The pressing ring 301 presses on the cover body, and the first positioning protrusion 303 is engaged in the annular groove. The bottom end of the fixing ring 20 extends radially inward to form a supporting ring edge 202, and the bottom periphery of the cover body abuts against the supporting ring edge 202. The inner ring side of the fixing ring 20 is provided with a first annular step portion 203, and the outer periphery of the positioning outer ring 102 extends radially outward to form a second positioning protrusion 103, which abuts against the first annular step portion 203. An annular gap with an upper opening is maintained between the fixing ring 20 and the positioning outer ring 102. The bottom end of the liquid storage cavity body 40 extends downward to form an annular extension portion 47, and the bottom end of the liquid storage cavity body 40 retains a second annular step portion 48 located on the outer periphery of the annular extension portion 47. The second circumferential thread 401 is an external thread and is provided on the outer periphery of the annular extension portion 47, and the first circumferential thread 201 is an internal thread and is provided on the inner periphery of the fixing ring 20. The annular extension portion 47 extends into the annular gap, and the fixing ring 20 and the second annular step portion 48 are joined together.

[0052] In different embodiments, the design of the handle can be slightly varied. For example, in another embodiment, the top of the liquid storage cavity body 40' is integrally formed with a handle 60'. Compared to the method of mounting the handle 60 on the liquid storage cavity body 40, this method of designing the handle and the liquid storage cavity body as an integral unit is easier to manufacture, for example, by integral injection molding. If the handle is pre-made, it can be pre-placed in the molding mold during the injection molding of the liquid storage cavity body, so that the handle is also embedded and fixed after the liquid storage cavity body is injection molded. This kind of embedded molding method is also a feasible implementation method. Usually, the liquid storage cavity body is made of plastic, but it can also be made of metal. The other embodiment has the same basic structure as the aforementioned embodiments, with the main difference being the shape and design of the handle.

[0053] Furthermore, during actual manufacturing, the materials of the aforementioned components can be flexibly selected. For example, the soft rubber brush tooth cover 10 and the protruding soft rubber 52 are made of silicone or rubber. The fixing ring 20, the rigid pressure plate 30, the liquid storage chamber body 40, and the liquid storage chamber body 40' are made of rigid plastic or metal.

[0054] The key design feature of this invention lies in its use of a threaded connection between two parts to the cleaning brush, allowing for easy disassembly and liquid filling. The liquid dispensing pressure control valve is conveniently located on the periphery of the liquid storage chamber, facilitating sealing and installation without disassembly and preventing leakage. This cleverly solves the problems of leakage and cumbersome filling associated with traditional liquid dispensing pressure control valves. The valve offers more precise control, and its peripheral location allows for easy finger pressing during use, enabling precise liquid dispensing control as the brush is applied, resulting in a more ergonomic user experience. Furthermore, this cleaning brush boasts a simple structure and is easy to manufacture and assemble.

[0055] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A liquid leakage preventing and use experience improving cleaning brush, characterized in that, include: The lower part of the assembly includes a soft rubber brush tooth cover, a retaining ring, and a rigid pressure plate. The soft rubber brush tooth cover has a cover body and a plurality of comb teeth integrally protruding from the bottom of the cover body. The cover body is provided with a slit-type liquid outlet. The retaining ring is provided with a first circumferential thread. The soft rubber brush tooth cover is mounted on the retaining ring, and the comb teeth and the slit-type liquid outlet are exposed below the retaining ring. The rigid pressure plate abuts against the top of the soft rubber brush tooth cover to clamp and fix the soft rubber brush tooth cover between the rigid pressure plate and the retaining ring. The upper part of the component includes a liquid storage chamber body and a liquid outlet pressure control valve installed on the periphery of the liquid storage chamber body; the liquid storage chamber body is provided with a second circumferential thread; The upper component is detachably threaded to the lower component, and the first circumferential thread and the second circumferential thread are threadedly connected to each other.

2. The leak-proof and improved experience of use cleaning brush according to claim 1, characterized in that, The liquid storage chamber body has an installation window on its periphery that extends into the inner cavity of the liquid storage chamber body. The liquid dispensing pressure control valve includes a pressure ring and an outwardly convex soft rubber. The inside of the outwardly convex soft rubber has a concave cavity that conforms to the outward convex shape. The outwardly convex soft rubber is installed corresponding to the installation window and is sealed and positioned on the liquid storage chamber body by the pressure ring. The concave cavity communicates with the inner cavity.

3. The leak-proof and improved experience of use cleaning brush according to claim 1, characterized in that, A handle is installed on the top of the liquid storage chamber body.

4. The leak-proof and improved experience of use cleaning brush according to claim 3, characterized in that, The liquid storage chamber body is provided with an installation cavity. The inner bottom surface of the installation cavity is provided with a first positioning post protruding upward. The first positioning post is provided with a positioning hole inside. The positioning hole extends upward through the top of the first positioning post. The inner side of the installation cavity is provided with a locking protrusion. The handle is provided with an installation protrusion ring. The installation protrusion ring is provided with a locking groove. A second positioning post is also provided in the area surrounded by the installation protrusion ring. The installation protrusion ring is locked into the installation cavity, the locking protrusion is locked into the locking groove, and the second positioning post is embedded in the positioning hole.

5. The leak-proof and improved experience of use cleaning brush according to claim 1, characterized in that, The top of the liquid storage chamber body is integrally formed with a handle.

6. The leak-proof and improved experience of use cleaning brush according to claim 1, characterized in that, The rigid pressure plate is provided with a through hole corresponding to the slit-type liquid outlet.

7. The leak-proof and improved experience of use cleaning brush according to claim 6, characterized in that, A first positioning ring is provided on the top of the cover body corresponding to the outer periphery of the slit-type liquid outlet. Support rings are also provided at intervals on the top of the cover body corresponding to the outer periphery of the first positioning ring. A second positioning ring is provided on the bottom of the rigid pressure plate corresponding to the outer periphery of the through hole. The second positioning ring is embedded in the first positioning ring. The upper end of the support ring abuts against the bottom of the rigid pressure plate.

8. The leakage-proof and use experience improving cleaning brush according to claim 1 or 6 or 7, characterized in that, The rigid pressure plate has a pressing ring extending downward from its outer periphery, and a first positioning protrusion extending radially outward from its outer periphery. Correspondingly, the cover body has an integrally extending positioning outer ring extending upward from its periphery, and an annular groove is provided on the inner periphery of the positioning outer ring. The pressing ring presses onto the cover body, and the first positioning protrusion is engaged in the annular groove.

9. The leak-proof and improved experience of use cleaning brush according to claim 8, characterized in that, The bottom end of the fixing ring extends radially inward to form a supporting ring edge, and the bottom periphery of the cover body abuts against the supporting ring edge.

10. The leak-proof and improved experience of use cleaning brush according to claim 8, characterized in that, The inner ring of the fixing ring is provided with a first annular step portion, and the outer circumference of the positioning outer ring extends radially outward with a second positioning protrusion. The second positioning protrusion abuts against the first annular step portion. An annular gap with an upper opening is maintained between the fixing ring and the positioning outer ring. The bottom end of the liquid storage cavity body extends downward with an annular extension portion. The bottom end of the liquid storage cavity body retains a second annular step portion located on the outer circumference of the annular extension portion. The second circumferential thread is an external thread and is provided on the outer circumference of the annular extension portion. The first circumferential thread is an internal thread and is provided on the inner circumference of the fixing ring. The annular extension portion extends into the annular gap.

Images