Toilet cleaner delayed release device

Abstract

The invention discloses a delayed release device for a toilet cleaner, comprising a flexible drainage tube and a containing shell; the flexible drainage tube is placed in a toilet bowl flushing channel, and a convergence, throat, and diffusion pipe are arranged along the water flow direction, the throat has the smallest inner diameter, and is interference fit with the outer wall of the diffusion pipe and the inner wall of the flushing channel; the containing shell is connected to the drainage tube by the inner wall of the toilet bowl, has a toilet cleaner built in, and has a delivery port and a narrow gap channel connected to the throat; an overflow hole connected to the containing shell is arranged at the bottom of the convergence and diffusion pipes; when flushing, water flows through the flexible drainage tube, and the throat has a small cross-sectional area and low pressure, and the narrow gap channel is used to suck the dissolved substances in the containing shell, so that the water and the effective substances are mixed and the inner wall of the toilet is flushed; part of the water flows into the containing shell through the overflow hole, and the toilet cleaner is continuously dissolved, thereby solving the problem of dissolution and mixing of solid toilet cleaners.

Description

Technical Field

[0001] The invention relates to the technical field of toilet cleaning agent delivery devices, and in particular to a toilet cleaning agent delayed release device. Background Art

[0002] In homes and various public health places, the cleaning and maintenance of flush toilets are closely related to the protection of environmental hygiene, so cleaning and odor removal of flush toilets are indispensable. One common cleaning method is to use solid blocks or gel pastes, which contain active ingredients, and attach them to specific locations inside the toilet by means of sticking. When the water tank begins to drain and the water flows into the toilet, it will flush the inner wall of the toilet. At the same time, the water will also touch and drive the attached solid blocks or gel-like substances, thereby achieving the desired effect of cleaning stains and dispelling odors.

[0003] However, in actual application, this type of cleaning method has certain limitations. The solubility characteristics of solid substances have a key impact on the cleaning effect. In order to prevent the effective substances from being washed away from the inner wall of the toilet too quickly by the water flow, solid cleaning materials are often designed to dissolve more slowly. In this way, when the water flow from the water tank continues to flow through the effective substances attached to the inner wall of the toilet, the content of effective ingredients in the generated dissolved water is quite scarce, and the concentration of effective substances in the solution is far below the ideal standard, making it difficult to effectively meet the established sanitation needs such as cleaning dirt and eliminating odors.

[0004] A Chinese patent application (publication number CN110820881A) discloses a delayed release device for toilet cleaning products, which is suitable for use in a toilet bowl. The device includes a toilet bowl hook hung on the toilet bowl, a shell hook connected to the toilet bowl hook, and a shell hung at the bottom of the shell hook; the shell is used to place toilet cleaning products, a water inlet is provided at the top of the shell, and a gap for water outlet is provided at the bottom of the shell; the flexibility of the shell hook is greater than the flexibility of the toilet bowl hook.

[0005] The operating principle of the release device is based on the regulation of the gap size formed after the left shell and the right shell are buckled together. The gap size parameter is directly related to the time span from the beginning of the generation of effective solution to the complete dripping. In essence, this regulation method achieves the effect of extending the release cycle, allowing the solution to be retained in the internal space of the toilet to a greater extent.

[0006] From the actual working conditions, when the time interval between the two flushing operations of the toilet is long, the effective solution in the release device shell will all flow into the toilet. In this case, when the next flushing process starts, the water flow from the water tank will greatly reduce the dissolution efficiency of the solid toilet cleaner in the shell. Since the solid toilet cleaner cannot be fully dissolved, the proportion of effective ingredients in the generated dissolved water is at a low level, making it difficult to achieve all-round and dead-angle cleaning of the entire inner wall of the toilet with this concentration of dissolved water, and the cleaning effect is significantly limited. Summary of the invention

[0007] In view of the problems of the prior art, a delayed-release device for a toilet cleaner is provided. By arranging a flexible drainage tube plug in the flushing channel of the toilet bowl, the water in the toilet tank can pass through the flexible drainage tube when flushing the inner wall of the toilet through the flushing channel. The pressure in the throat pipe of the flexible drainage tube is lower than the pressure in the convergence pipe and the diffusion pipe. Therefore, the effective substance dissolved in the containing shell can be drawn into the throat pipe through the narrow gap channel, so that the effective substance and the flushing water are fully mixed to flush the inner wall of the toilet. In this process, the water passing through the convergence pipe and the throat pipe will partially overflow into the containing shell and dissolve the toilet cleaner therein, so that it will be mixed with water in the throat pipe to flush the inner wall of the toilet next time, thereby solving the problem that the existing device cannot fully dissolve the solid toilet cleaner and mix it with the flushing water.

[0008] To solve the problems of the prior art, the present invention provides a delayed-release device for a toilet cleaning agent, comprising a flexible drainage tube and a containing shell; the flexible drainage tube is arranged in a flushing channel of a toilet bowl, and the flexible drainage tube is provided with a convergent pipe, a throat pipe and a diffuser pipe in sequence along the direction of water flow in the flushing channel, the inner diameter of the throat pipe is smaller than the inner diameters of the convergent pipe and the diffuser pipe, and the outer walls of the throat pipe and the diffuser pipe are interference-fitted with the inner wall of the flushing channel; the containing shell is tightly attached to the inner wall of the toilet bowl and is connected to the flexible drainage tube, the toilet cleaning agent is placed in the containing shell, a delivery port is provided on the side of the containing shell away from the inner wall of the toilet bowl, a narrow gap channel is provided in the containing shell, the top end of the narrow gap channel is communicated with the inner cavity of the throat pipe, and the bottom end of the narrow gap channel extends to the bottom of the inner cavity of the containing shell; the bottoms of the convergent pipe and the diffuser pipe are both provided with overflow holes communicated with the containing shell.

[0009] Preferably, it also includes a U-shaped clamp hung on the edge of the toilet bowl, the clamp includes a connecting plate extending along the edge of the toilet bowl, one end of the connecting plate facing the inner cavity of the toilet bowl is provided with a clamping plate extending downward into the toilet bowl, the other end of the connecting plate is provided with an abutment plate extending downward and abutting against the outer wall of the toilet bowl, the clamping plate is connected to the side of the accommodating shell facing away from the inner wall of the toilet bowl in a detachable manner.

[0010] Preferably, the clamp is made of elastic material, the angle between the connecting plate and the abutment plate is less than 90 degrees, the bottom end of the abutment plate is provided with a pull ear with an angle less than 180 degrees therewith and extending toward the outside of the toilet bowl, and the bottom end of the abutment plate elastically abuts against the outer wall of the toilet bowl.

[0011] Preferably, a snap-in seat is provided on the side of the accommodating shell facing away from the inner wall of the toilet bowl, and a snap-in interface extending in the vertical direction is provided in the snap-in seat. The snap-in plate slides through the snap-in interface, and the snap-in plate is provided with ratchets arranged along its length direction. The ratchets extend along the width direction of the snap-in plate. An engaging plate that can move along the length direction of the ratchets is provided in the snap-in seat, and a ratchet groove that can engage with the ratchets is provided on the engaging plate.

[0012] Preferably, a mounting groove extending along the length direction of the ratchet is provided on the clamping seat, and the engaging plate is placed in the mounting groove along the length direction of the ratchet. The engaging plate and the mounting groove are interference fit, and a shift block is provided on one side of the clamping plate, which extends along the thickness direction of the clamping seat and protrudes from the outer surface of the clamping seat.

[0013] Preferably, the card has two and is symmetrically arranged along the central symmetry plane of the accommodating shell, a transverse plate is arranged between the two clamps, and the introduction port is located between the two clamping plates.

[0014] Preferably, the containing shell is a pocket-shaped structure with a narrow lower portion and a wide upper portion, the top opening of the containing shell extends along the length direction of the flexible drainage tube, and the overflow hole is located at the top of the opening of the containing shell.

[0015] Preferably, the throat pipe is provided with a coaxial narrow cavity therein, the narrow cavity is communicated with the narrow gap channel, the inner wall of the throat pipe is provided with fine grooves distributed along its circumference, the fine grooves extend along the axial direction of the throat pipe, and the fine grooves are communicated with the narrow cavity.

[0016] Preferably, the inner wall of the containing shell is provided with convex patterns, and the convex patterns extend along the depth direction of the inner cavity of the containing shell.

[0017] Preferably, an overflow hole is provided at the upper portion of the accommodating shell, and water in the accommodating shell that is higher than the overflow hole flows into the toilet bowl through the overflow hole.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention places the flexible drainage tube firmly inside the flushing channel of the toilet bowl. When the toilet tank performs the flushing procedure and the water flows along the flushing channel toward the inner wall of the toilet, the water will inevitably flow through the flexible drainage tube.

[0020] The flexible drainage tube includes a convergent pipe, a throat pipe and a diffuser pipe. Based on the principle of fluid mechanics, the cross-sectional area at the throat pipe is relatively smaller. According to Bernoulli's law, the pressure decreases when the flow rate increases, so the pressure in the throat pipe is smaller than that in the convergent pipe and the diffuser pipe.

[0021] This pressure difference creates a spontaneous suction mechanism, through which the effective substances dissolved in the containment shell will be sucked into the throat pipe, prompting the effective substances and flushing water to fully merge in this area, ultimately achieving the goal of efficiently flushing the inner wall of the toilet with the mixed liquid.

[0022] Moreover, as the water continues to flow through the flexible drainage tube, part of the water flowing through the convergence pipe and the throat pipe will flow into the containment shell through the overflow hole. At this time, the toilet cleaning agent placed in the containment shell will react with this part of the water flow to dissolve, allowing the toilet cleaning agent to continue to dissolve, and to mix with water again in the throat pipe during the next round of flushing, and then flush the inner wall of the toilet in advance to reserve sufficient effective ingredients, solving the problem that the existing device cannot fully dissolve the solid toilet cleaning agent and mix it with the flushing water. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the delayed release device of the toilet cleaning agent of the present invention installed on the toilet bowl.

[0024] Figure 2 yes Figure 1 Cross-sectional view in the AA direction.

[0025] Figure 3 yes Figure 1 Cross-sectional view along the BB direction.

[0026] Figure 4 It is a three-dimensional schematic diagram of the delayed-release device for toilet cleaning agent of the present invention installed on a toilet bowl at a first viewing angle.

[0027] Figure 5 It is a stereoscopic schematic diagram of the delayed-release device for toilet cleaning agent of the present invention installed on a toilet bowl from a second viewing angle.

[0028] Figure 6 It is a stereoscopic diagram of the delayed-release device for toilet cleaning agent of the present invention at a first viewing angle.

[0029] Figure 7 It is a stereoscopic diagram of the delayed-release device for toilet cleaning agent of the present invention under a second viewing angle.

[0030] Figure 8 It is a stereoscopic diagram of the delayed-release device for toilet cleaning agent of the present invention at a third viewing angle.

[0031] Fig. 9 It is a three-dimensional exploded view of a fixture in the delayed-release device for toilet cleaning agent of the present invention.

[0032] Fig.10 It is a schematic diagram of the internal structure of the placement shell and the flexible drainage tube in the delayed release device of the toilet cleaning agent of the present invention at a first viewing angle.

[0033] Fig.11 It is a schematic diagram of the internal structure of the placement shell and the flexible drainage tube in the delayed release device of the toilet cleaning agent of the present invention under the second viewing angle.

[0034] The numbers in the figure are: 1. toilet bowl; 11. flushing channel; 2. flexible drainage tube; 21. convergence pipe; 22. throat pipe; 221. narrow cavity; 222. fine groove; 23. diffusion pipe; 24. overflow hole; 25. water blocking block; 3. containing shell; 31. injection port; 32. narrow gap channel; 33. snap-fit ​​seat; 34. engaging plate; 341. ratchet groove; 342. dial block; 35. convex pattern; 36. overflow hole; 4. fixture; 41. connecting plate; 42. snap-fit ​​plate; 421. ratchet; 43. abutment plate; 44. pull ear; 45. horizontal plate; 5. toilet cleaner. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the present application provides a delayed release device for a toilet cleaning agent, comprising a flexible drainage tube 2 and a containing shell 3; the flexible drainage tube 2 is arranged in a flushing channel 11 of a toilet bowl 1, and the flexible drainage tube 2 is provided with a convergent pipe 21, a throat pipe 22 and a diffuser pipe 23 in sequence along the direction of water flow in the flushing channel 11, the inner diameter of the throat pipe 22 is smaller than the inner diameters of the convergent pipe 21 and the diffuser pipe 23, and the outer walls of the throat pipe 22 and the diffuser pipe 23 are aligned with the inner diameter of the flushing channel 11. The accommodating shell 3 is tightly attached to the inner wall of the toilet bowl 1 and connected to the flexible drainage tube 2. The toilet cleaning agent 5 is placed in the accommodating shell 3. A delivery port 31 is provided on the side of the accommodating shell 3 facing away from the inner wall of the toilet bowl 1. A narrow gap channel 32 is provided in the accommodating shell 3. The top end of the narrow gap channel 32 is connected to the inner cavity of the throat pipe 22, and the bottom end of the narrow gap channel 32 extends to the bottom of the inner cavity of the accommodating shell 3. The bottoms of the convergent pipe 21 and the diffuser pipe 23 are both provided with overflow holes 24 connected to the accommodating shell 3.

[0037] A water blocking block 25 is disposed on a side of the overflow hole 24 away from the water outlet hole of the flushing channel 11 .

[0038] The flexible drainage pipe 2 is arranged inside the flushing channel 11 of the toilet bowl 1, and has a convergent pipe 21, a throat pipe 22 and a diffuser pipe 23 arranged in sequence along the flow direction of the water flow in the flushing channel 11. In terms of size design, the inner diameter of the throat pipe 22 is designed to be smaller than the inner diameters of the convergent pipe 21 and the diffuser pipe 23, and the cross-sectional area at the throat pipe 22 is relatively smaller. According to Bernoulli's principle, the pressure decreases when the flow rate increases, so the pressure in the throat pipe 22 is smaller than that in the convergent pipe 21 and the diffuser pipe 23.

[0039] This pressure difference creates a spontaneous suction mechanism, and the dissolved effective substances in the containment shell 3 are sucked into the throat pipe 22 through the narrow gap channel 32, which promotes the full fusion of the effective substances and the flushing water in the throat pipe 22, and finally achieves the goal of efficiently flushing the inner wall of the toilet with the mixed liquid.

[0040] At the same time, in order to ensure a stable installation, the outer walls of the throat pipe 22 and the diffusion pipe 23 and the inner wall of the flushing channel 11 adopt an interference fit. This tight fit not only enhances the stability of the device, but also effectively prevents water leakage and ensures that the water flows along the predetermined path.

[0041] The containing shell 3 is closely attached to the inner wall of the toilet bowl 1 and is firmly connected to the flexible drainage tube 2. It is responsible for carrying and dissolving the toilet cleaning agent 5, and the toilet cleaning agent 5 is placed in an orderly manner therein for subsequent dissolution operations. A delivery port 31 is provided on the side of the containing shell 3 that is away from the inner wall of the toilet bowl 1, which is convenient for regular replenishment of the toilet cleaning agent 5. In addition, the top of the narrow gap channel 32 is directly connected to the inner cavity of the throat pipe 22, and the bottom extends all the way to the bottom of the inner cavity of the containing shell 3, building a passage for the transmission of the dissolved substances of the toilet cleaning agent 5.

[0042] The bottom of the convergent pipe 21 and the diffuser pipe 23 are each equipped with an overflow hole 24 connected to the containment shell 3. When the water flows through the flexible drainage tube 2, part of the water flow can enter the containment shell 3 through the overflow hole 24, helping the toilet cleaner 5 to dissolve. On the side of the overflow hole 24 away from the water outlet of the flushing channel 11, an additional water blocking block 25 is provided. In this way, the water flow in the convergent pipe 21 and the diffuser pipe 23 is intercepted, and flows into the containment shell 3 through the overflow hole 24. The toilet cleaner placed in the containment shell 3 will undergo a dissolution reaction with this part of the water flow, allowing the toilet cleaner to continue to dissolve, so that it will be mixed with water again in the throat pipe 22 during the next round of flushing, and then flush the inner wall of the toilet. Sufficient effective ingredients are pre-reserved, thereby overcoming the technical difficulties of the existing device in fully dissolving the solid toilet cleaner 5 and evenly mixing it with the flushing water.

[0043] like Figure 4 , Figure 5 , Figure 8 and Fig. 9As shown, it also includes a U-shaped fixture 4 hung on the edge of the toilet bowl 1, the fixture 4 includes a connecting plate 41 extending along the edge of the toilet bowl 1, and one end of the connecting plate 41 facing the inner cavity of the toilet bowl 1 is provided with a clamping plate 42 extending downward into the toilet bowl 1, and the other end of the connecting plate 41 is provided with an abutting plate 43 extending downward and abutting against the outer wall of the toilet bowl 1, and the clamping plate 42 is connected to the side of the accommodating shell 3 facing away from the inner wall of the toilet bowl 1 in a detachable manner.

[0044] The toilet cleaning agent delayed release device is also equipped with a specific fixture 4, which has a U-shaped structure and is placed at the edge of the toilet bowl 1. The fixture 4 body includes a connecting plate 41, which extends along the width of the edge of the toilet bowl 1. At one end of the connecting plate 41 facing the inner cavity of the toilet bowl 1, a clamping plate 42 is provided, which is in the form of vertically extending downward until it extends into the internal space of the toilet bowl 1; and at the other end of the connecting plate 41, there is also a contact plate 43, which also extends downward and finally rests firmly on the outer wall surface of the toilet bowl 1.

[0045] This layout design allows a stable connection between the clamp 4 and the toilet bowl 1, enhancing the installation stability of the overall device on the toilet bowl 1. The clamping plate 42 and the side of the containing shell 3 facing away from the inner wall of the toilet bowl 1 form a detachable connection mechanism. On the one hand, when the containing shell 3 needs to be maintained, the toilet cleaner 5 needs to be replaced or repaired, the operator can easily separate the two to improve the convenience and flexibility of operation; on the other hand, in daily use, the stable connection ensures the normal operation of the containing shell 3, making it firmly in a given position, and cooperating with the flexible drainage tube 2 and other components to achieve a series of functions such as the delayed release of the toilet cleaner 5, efficient dissolution, and precise flushing of the inner wall of the toilet, laying a solid structural foundation.

[0046] like Figure 8 As shown, the clamp 4 is made of elastic material, the angle between the connecting plate 41 and the abutting plate 43 is less than 90 degrees, the bottom end of the abutting plate 43 is provided with a pull ear 44 which has an angle less than 180 degrees with it and extends to the outside of the toilet bowl 1, and the bottom end of the abutting plate 43 elastically abuts against the outer wall of the toilet bowl 1.

[0047] The clamp 4 is made of a material with elastic properties, which gives it unique mechanical properties and installation convenience. The angle formed by the connecting plate 41 and the abutting plate 43 is an acute angle, specifically, less than 90 degrees. This acute angle layout allows the clamp 4 to form a specific stress distribution between the components when it is assembled to the edge of the toilet bowl 1, which helps to stabilize the overall device.

[0048] The bottom of the abutment plate 43 is additionally provided with a pull ear 44. The angle between the pull ear 44 and the abutment plate 43 is less than 180 degrees, and the extension direction thereof is toward the outside of the toilet bowl 1. The existence of the pull ear 44 not only provides a fulcrum for subsequent possible disassembly and adjustment operations, but also assists the operator in more accurately controlling the fit between the fixture 4 and the outer wall of the toilet bowl 1 during the initial installation.

[0049] An elastic abutment relationship is established between the bottom end of the abutment plate 43 and the outer wall of the toilet bowl 1. When the fixture 4 is installed in place, the bottom end of the abutment plate 43 can adaptively fit the curved surface of the outer wall of the toilet bowl 1 by virtue of the characteristics of the elastic material. Even if there are certain manufacturing tolerances or surface unevenness on the outer wall of the toilet bowl 1, a tight and stable contact state can still be ensured, thereby strengthening the installation firmness of the entire toilet cleaning agent delayed release device on the toilet bowl 1, laying a foundation for the stable operation of the subsequent device.

[0050] like Figure 3 and Figure 8 As shown, a snap-in seat 33 is provided on the side of the accommodating shell 3 facing away from the inner wall of the toilet bowl 1, and a snap-in interface extending in the vertical direction is provided in the snap-in seat 33. The snap-in plate 42 slides through the snap-in interface, and ratchet teeth 421 arranged along the length direction thereof are provided on the snap-in plate 42. The ratchet teeth 421 extend along the width direction of the snap-in plate 42, and an engaging plate 34 capable of moving along the length direction of the ratchet teeth 421 is provided in the snap-in seat 33, and a ratchet groove 341 capable of engaging with the ratchet teeth 421 is provided on the engaging plate 34.

[0051] A card seat 33 is arranged on the side of the receiving shell 3 away from the inner wall of the toilet bowl 1. A card interface is configured inside the card seat 33, and the card interface extends straight in the vertical direction to provide precise guidance and positioning reference for subsequent connection operations.

[0052] The matching card plate 42 can slide through the card interface, thereby establishing a mechanical linkage relationship between the two. The main structure of the card plate 42 is also provided with ratchet teeth 421, which are arranged in an orderly manner along the length direction of the card plate 42, and their extension direction is consistent with the width direction of the card plate 42. This design lays a structural foundation for the subsequent locking and positioning functions.

[0053] At the same time, a fitting plate 34 is also arranged inside the clamping seat 33, and the fitting plate 34 can be flexibly moved along the length direction of the ratchet teeth 421, so as to accurately adapt to the ratchet teeth 421 at different positions. A ratchet groove 341 is correspondingly provided on the fitting plate 34, and the shape and size of the ratchet groove 341 match the ratchet teeth 421. When the two are close to each other, they can be accurately meshed together, thereby achieving a stable connection effect, ensuring the reliability and stability of the connection between the clamping plate 42 and the clamping seat 33, and providing strong support for the stable operation of the entire device under complex working conditions. When the fitting plate 34 is pulled out of the clamping seat 33, the clamping plate 42 can slide in the vertical direction, so that the connecting plate 41 can abut against the edge of the toilet bowl 1, so as to adapt to the installation of toilet bowls 1 of different models.

[0054] like Figure 3 and Figure 8 As shown, a mounting groove extending along the length direction of the ratchet tooth 421 is provided on the clamping seat 33, and the engaging plate 34 is placed in the mounting groove along the length direction of the ratchet tooth 421. The engaging plate 34 is interference fit with the mounting groove, and a shift block 342 is provided on one side of the engaging plate 34. The shift block 342 extends along the thickness direction of the clamping seat 33 and protrudes from the outer surface of the clamping seat 33.

[0055] A mounting groove is provided in the clamping seat 33, and the extension direction of the mounting groove is consistent with the length direction of the ratchet 421. In terms of design planning, the interlocking plate 34 is properly placed inside the mounting groove along the length dimension of the ratchet 421 according to the established assembly plan. In terms of the matching relationship between the two, the interlocking plate 34 and the mounting groove adopt an interference fit connection method to ensure the stability and tightness of the assembly. A shift block 342 is provided on the edge position of one side of the interlocking plate 34 facing the outside. The extension direction of the shift block 342 is precisely matched with the thickness direction of the clamping seat 33, and part of the structure of the shift block 342 exceeds the outer surface of the clamping seat 33, presenting a protruding state, so that the user can pull the interlocking plate 34 out of the clamping seat 33 through the shift block 342, thereby facilitating the adjustment of the height of the fixture 4.

[0056] like Figure 4 As shown, there are two clamps 4 and they are symmetrically arranged along the central symmetry plane of the accommodating shell 3 , a transverse plate 45 is arranged between the two clamps 4 , and the introduction port 31 is located between the two clamping plates 42 .

[0057] There are two clamps 4 in the overall layout, and they are symmetrically distributed according to the central symmetry plane of the housing 3, so as to achieve balance and stability in the mechanical structure. This symmetrical layout can ensure that the supporting force acting on both sides of the housing 3 is evenly distributed, avoiding unstable conditions such as tilting and shaking caused by uneven force on one side, and laying a foundation for the stable operation of the subsequent device.

[0058] A horizontal plate 45 is placed between the bottom ends of the abutment plates 43 of the two fixtures 4. The introduction of the horizontal plate 45 further strengthens the correlation between the two fixtures 4, making the two work more closely together. From the perspective of mechanical conduction, the horizontal plate 45 can effectively disperse the external forces borne by the two fixtures 4, enhance the rigidity of the overall structure, and make the device more resilient when dealing with complex working conditions such as external impact and vibration.

[0059] The delivery port 31 is positioned between the two clamping plates 42. Such a layout not only makes full use of the space between the two clamping plates 42, but also provides a convenient and accurate entrance for the delivery of the toilet cleaning agent 5 without affecting the stable support and connection of the clamp 4 to the containing shell 3, ensuring that the toilet cleaning agent 5 can be smoothly and efficiently placed in the containing shell 3, and maintaining the normal operation process of the entire toilet cleaning agent delayed release device.

[0060] like Figure 7 As shown, the containment shell 3 is a pocket-shaped structure with a narrow lower portion and a wide upper portion. The top opening of the containment shell 3 extends along the length direction of the flexible drainage tube 2 , and the overflow hole 24 is located at the top of the opening of the containment shell 3 .

[0061] The containing shell 3 presents a pocket-like structure with a narrow lower portion and a gradually wide upper portion. The narrow structure at the lower portion helps to form a relatively concentrated space inside the containing shell 3, so that the toilet cleaning agent 5 placed therein can be more gathered, thereby improving the dissolution efficiency; and the gradually widening structure at the upper portion can effectively increase the open area at the top of the containing shell 3, thereby providing more ample space for the subsequent delivery of the toilet cleaning agent 5 and the interaction between the water flow and the dissolved substance.

[0062] The overflow hole 24 is located at the top of the opening of the containment shell 3. When the water flow in the flexible drainage tube 2 overflows under certain working conditions, the overflow hole 24 at this position can capture this part of the excess water flow in the first time and guide it to the inside of the containment shell 3 in an orderly manner, which not only avoids the cleaning hazards caused by the overflow of the water flow, but also utilizes this part of the water flow to accelerate the dissolution of the toilet cleaning agent 5, ensuring the stable and efficient operation of the entire toilet cleaning agent delayed release device.

[0063] like Fig.10 As shown, the throat pipe 22 is provided with a coaxial narrow cavity 221 therein, the narrow cavity 221 is communicated with the narrow gap channel 32, the inner wall of the throat pipe 22 is provided with fine grooves 222 distributed along its circumference, the fine grooves 222 extend along the axial direction of the throat pipe 22, and the fine grooves 222 are communicated with the narrow cavity 221.

[0064] In the internal structure of the throat pipe 22, a narrow cavity 221 is provided, and the narrow cavity 221 is coaxially arranged with the throat pipe 22. This coaxial design, from the perspective of fluid mechanics and mass transfer principles, can minimize the turbulence caused by the abrupt structure, ensure that the fluid maintains a relatively stable flow state when flowing through this area, and create favorable conditions for subsequent effective material transmission and mixing.

[0065] The narrow cavity 221 is connected to the pre-constructed narrow gap channel 32, so that the dissolved effective substance in the containing shell 3 can smoothly pass through the narrow groove 222 along the narrow cavity 221 channel and dissolve with the flushing water.

[0066] The extension direction of the fine grooves 222 is consistent with the axial direction of the throat pipe 22, just like the precisely arranged micro-pipes, which are all connected with the narrow cavity 221. In this way, when the solution containing the effective substance enters the narrow cavity 221, it can be more evenly and efficiently dispersed to every corner of the throat pipe 22 with the help of the diversion network constructed by the fine grooves 222, so that the effective substance and the water flow can be mixed in all directions and in depth, greatly improving the cleaning effect and optimizing the overall performance of the toilet cleaning agent delayed release device.

[0067] like Fig.11 As shown, the inner wall of the accommodating shell 3 is provided with convex patterns 35 , and the convex patterns 35 extend along the depth direction of the inner cavity of the accommodating shell 3 .

[0068] When the toilet cleaner 5 is placed in the container shell 3, the presence of the convex pattern 35 effectively changes the originally flat contact interface of the inner wall of the container shell 3. Compared with the smooth inner wall, the convex pattern 35 makes the contact form between the toilet cleaner 5 and the inner wall of the container shell 3 change substantially, and the original large-area fitting condition is broken. Because the raised part of the convex pattern 35 undertakes part of the contact task, the actual contact area between the surface of the toilet cleaner 5 and the inner wall of the container shell 3 is significantly reduced, reducing the problems of adhesion and uneven dissolution that may be caused by large-area contact, creating favorable conditions for the toilet cleaner 5 to dissolve more efficiently and stably in the container shell 3.

[0069] like Fig.10 As shown, an overflow hole 36 is provided at the upper portion of the receiving shell 3 , and the water in the receiving shell 3 above the overflow hole 36 flows into the toilet bowl 1 through the overflow hole 36 .

[0070] After water is injected into the housing 3, as the toilet cleaning agent 5 gradually dissolves and the water level continues to rise, once the water level rises to a height above the overflow hole 36, based on the communicating vessel principle, this part of the water above the overflow hole 36 will follow the established fluid path under the action of water pressure, and flow through the overflow hole 36 in an orderly manner and smoothly into the toilet bowl 1. In this way, the water level inside the housing 3 can be maintained in a relatively stable range, which can not only ensure that the toilet cleaning agent 5 is continuously in a suitable dissolution environment, avoid flooding other key components due to excessively high water levels, and affect the normal operation of the entire toilet cleaning agent 5 release device, but also timely discharge excess water to optimize the stability and reliability of the device operation.

[0071] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A toilet cleaning agent delayed release device, characterized in that: It comprises a flexible drainage tube (2) and a containing shell (3); The flexible drainage pipe (2) is arranged in the flushing channel (11) of the toilet bowl (1); the flexible drainage pipe (2) is provided with a convergent pipe (21), a throat pipe (22) and a diffuser pipe (23) in sequence along the direction of water flow in the flushing channel (11); the inner diameter of the throat pipe (22) is smaller than the inner diameters of the convergent pipe (21) and the diffuser pipe (23); the outer walls of the throat pipe (22) and the diffuser pipe (23) are interference fit with the inner wall of the flushing channel (11); The containing shell (3) is closely attached to the inner wall of the toilet bowl (1) and is connected to the flexible drainage tube (2). The toilet cleaning agent (5) is placed in the containing shell (3). A delivery port (31) is provided on the side of the containing shell (3) away from the inner wall of the toilet bowl (1). A narrow gap channel (32) is provided in the containing shell (3). The top end of the narrow gap channel (32) is communicated with the inner cavity of the throat pipe (22), and the bottom end of the narrow gap channel (32) extends to the bottom of the inner cavity of the containing shell (3). The bottoms of the convergent pipe (21) and the diffuser pipe (23) are both provided with overflow holes (24) that are in communication with the containing shell (3).

2. The delayed release device for toilet cleaning agent according to claim 1, characterized in that: The toilet bowl (1) further comprises a U-shaped fixture (4) hung on the edge of the toilet bowl (1), the fixture (4) comprising a connecting plate (41) extending along the edge of the toilet bowl (1), one end of the connecting plate (41) facing the inner cavity of the toilet bowl (1) is provided with a clamping plate (42) extending downward into the toilet bowl (1), and the other end of the connecting plate (41) is provided with an abutting plate (43) extending downward and abutting against the outer wall of the toilet bowl (1), and the clamping plate (42) is connected to the side of the accommodating shell (3) facing away from the inner wall of the toilet bowl (1) in a detachable manner.

3. The delayed release device for toilet cleaning agent according to claim 2, characterized in that: The clamp (4) is made of elastic material, the angle between the connecting plate (41) and the abutting plate (43) is less than 90 degrees, the bottom end of the abutting plate (43) is provided with a pull ear (44) which has an angle less than 180 degrees with the connecting plate (41) and extends toward the outside of the toilet bowl (1), and the bottom end of the abutting plate (43) elastically abuts against the outer wall of the toilet bowl (1).

4. The delayed release device for toilet cleaning agent according to claim 2 or 3, characterized in that: A snap-fit ​​seat (33) is provided on a side of the accommodating shell (3) facing away from the inner wall of the toilet bowl (1), and a snap-fit ​​interface extending in a vertical direction is provided in the snap-fit ​​seat (33). The snap-fit ​​plate (42) slides through the snap-fit ​​interface, and ratchet teeth (421) arranged along the length direction thereof are provided on the snap-fit ​​plate (42), and the ratchet teeth (421) extend along the width direction of the snap-fit ​​plate (42). A chiming plate (34) capable of moving along the length direction of the ratchet teeth (421) is provided in the snap-fit ​​seat (33), and a ratchet groove (341) capable of engaging with the ratchet teeth (421) is provided on the chiming plate (34).

5. The delayed release device for toilet cleaning agent according to claim 4, characterized in that: The clamping seat (33) is provided with a mounting groove extending along the length direction of the ratchet (421), the engaging plate (34) is arranged in the mounting groove along the length direction of the ratchet (421), the engaging plate (34) and the mounting groove are interference fit, and a shifting block (342) is provided on one side of the engaging plate (34), the shifting block (342) extends along the thickness direction of the clamping seat (33) and protrudes from the outer surface of the clamping seat (33).

6. The delayed release device for toilet cleaning agent according to claim 3, characterized in that: There are two clamps (4) and they are symmetrically arranged along the central symmetry plane of the containing shell (3). A transverse plate (45) is arranged between the two clamps (4), and the delivery port (31) is located between the two clamping plates (42).

7. The delayed-release device for toilet cleaning agent according to any one of claims 1 to 3, characterized in that: The containing shell (3) is in the form of a pocket-shaped structure with a narrow lower portion and a wide upper portion. The top opening of the containing shell (3) extends along the length direction of the flexible drainage tube (2), and the overflow hole (24) is located at the top of the opening of the containing shell (3).

8. The delayed-release device for toilet cleaning agent according to any one of claims 1 to 3, characterized in that: The throat pipe (22) is provided with a coaxial narrow cavity (221), the narrow cavity (221) being in communication with the narrow gap channel (32), and the inner wall of the throat pipe (22) is provided with fine grooves (222) distributed along its circumference, the fine grooves (222) extending along the axial direction of the throat pipe (22), and the fine grooves (222) being in communication with the narrow cavity (221).

9. The delayed release device for toilet cleaning agent according to claim 1, characterized in that: The inner wall of the containing shell (3) is provided with convex patterns (35), and the convex patterns (35) extend along the depth direction of the inner cavity of the containing shell (3).

10. The delayed release device for toilet cleaning agent according to any one of claims 1 to 3, characterized in that: An overflow hole (36) is provided at the upper portion of the containing shell (3), and water in the containing shell (3) that is higher than the overflow hole (36) flows into the toilet bowl (1) through the overflow hole (36).

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