Tamper-resistant toilet tank lid securement device

Abstract

This invention relates to the field of toilet tank lid fixing technology, specifically to an anti-disassembly toilet tank lid fixing device; it includes a toilet seat; a tank is provided on the toilet seat, a drain valve is provided inside the tank, two flush buttons are provided on the upper end of the drain valve, a cover plate is provided on the tank, a fixing ring is provided along the shape of the lower end face of the cover plate, a fixing mechanism for connecting and fixing with the drain valve is provided on the cover plate, and a reinforcement mechanism for connecting and fixing with the tank is provided on the lower end face of the cover plate; this invention solves the problems of existing toilet tank lid fixing devices being exposed to the outside of the tank, which is prone to collision damage, thus increasing safety risks, and being easily disassembled, resulting in poor fixing effect of the tank lid.

Description

Technical Field

[0001] This invention relates to the field of toilet tank lid fixing technology, specifically a toilet tank lid fixing device that prevents disassembly. Background Technology

[0002] A toilet mainly consists of a water tank, a toilet base, and a toilet seat. The water tank is composed of a float, a water inlet pipe, an overflow pipe, a stop valve, a water tank cover, and a water inlet ring. The water tank cover is placed on the top of the water tank to cover it and prevent dust and debris from falling into the water tank, as well as to prevent water spray and reduce noise.

[0003] When toilets are used in special places such as mental hospitals, in order to prevent mental patients from removing the tank lid and causing harm to others or themselves when their condition is unstable, a U-shaped clip is usually installed between the tank lid and the tank. Then, metal screws are used to tighten the U-shaped clip to clamp the tank and the tank lid together and fix them together.

[0004] However, the current toilet tank lid has the following problems in the fixing process: 1. The fixing device connecting the existing tank lid and the tank is exposed to the outside of the tank, which is prone to collision damage, thereby increasing the safety risk. It is also easy for people to disassemble, and the fixing effect of the tank lid is not good. Summary of the Invention

[0005] In view of the above problems, this application provides a toilet tank lid fixing device that is resistant to disassembly, so as to solve the technical problems in the related art, such as the existing fixing device connecting the tank lid and the tank being exposed to the outside of the tank, which is prone to collision damage, thereby increasing the safety risk, and being easily disassembled, and the tank lid not being fixed effectively.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] This application provides a detachable toilet tank lid fixing device, including a toilet seat; the toilet seat is provided with a box, the box is provided with a drain valve, the drain valve is provided with two flush buttons at the upper end, the box is provided with a cover plate, the lower end face of the cover plate is provided with a fixing ring along its shape, the cover plate is provided with a fixing mechanism for connecting and fixing with the drain valve, and the lower end face of the cover plate is provided with a reinforcement mechanism for connecting and fixing with the box.

[0008] The fixing mechanism includes a through hole. The cover plate has a through hole in the middle. A stepped cylinder with an open upper end is installed in the through hole. The lower end of the stepped cylinder extends to the bottom of the cover plate. The cover plate is fixed to the stepped cylinder by a nut. The upper end of the horizontal end of the stepped cylinder has an arc-shaped structure. A cylindrical column for connecting the cover plate and the box body is rotatably installed on the lower part of the cover plate to cooperate with the reinforcement mechanism. A fixing plate is fixedly installed on the upper end of the drain valve. The fixing plate has an inverted U-shaped structure and is connected to the stepped cylinder by a No. 1 screw.

[0009] As a preferred embodiment, the reinforcement mechanism includes limiting rods. Limiting rods are symmetrically mounted on the lower end of the cover plate via bearing seats. The limiting rods have a U-shaped structure, and the bearing seats are mounted on the cover plate. Insertion holes for engaging the limiting rods are provided on both the fixing ring and the housing. Teeth are evenly distributed along the circumferential direction on the upper circumferential outer wall of the cylinder. A push-pull plate is provided on each of the left and right sides of the cylinder. An L-shaped plate is installed on the opposite sides of each of the two push-pull plates. A toothed plate that meshes with the teeth is installed on the opposite vertical sections of each of the two L-shaped plates. A limiting component is provided between the cylinder and the drain valve. The push-pull plate on the left is fixedly connected to the limiting rod on the front side, and the push-pull plate on the right is fixedly connected to the limiting rod on the rear side. The ends of the two push-pull plates away from the corresponding fixedly connected limiting rods are slidably engaged with the limiting rod on the other side. A driving component for driving the push-pull plates is provided on the cover plate.

[0010] As a preferred embodiment, the driving component includes a hole. The cover plate has a hole, and a tube is fixedly installed in the hole by a T-shaped screw block. A rotating shaft is rotatably installed inside the tube. The upper end face of the rotating shaft has a groove with an equilateral triangular structure. A column is provided in the middle of the groove. The lower end of the rotating shaft extends to the bottom of the cover plate. A support plate is installed on the lower end face of the rotating shaft. A connecting plate is eccentrically hinged to the lower end face of the support plate and the rotating shaft. The other end of the connecting plate is hinged to a limiting rod. An abutment is provided between the rotating shaft and the horizontal section of the T-shaped screw block.

[0011] As a preferred embodiment, the control component includes a column, and each of the two buttons of the drain valve is provided with a column. The upper part of the column extends into the stepped cylinder, and a rectangular plate is provided on the upper end face of the column. Two drain buttons are slidably installed in the stepped cylinder. A rectangular groove that mates with the rectangular plate is opened on the lower end face of the drain button, and the drain button and the rectangular plate are connected by a No. 2 screw. A compression spring is sleeved on the column in the stepped cylinder, and the lower end of the compression spring is connected to the stepped cylinder.

[0012] As a preferred embodiment, the abutting component includes a stop block. The stop blocks are evenly arranged on the inner side of the horizontal section of the T-shaped screw block. A sliding groove is symmetrically opened on the left and right sides of the rotating shaft. The abutting block is slidably installed in the sliding groove through the cooperation of a compression spring, and the abutting block abuts against the stop block.

[0013] As a preferred embodiment, the limiting component includes a limiting groove. The limiting groove is symmetrically opened on the outer circumference of the drain valve. The limiting groove is divided into a vertical section and a horizontal section. A limiting post is provided on the inner wall of the cylinder to slide and cooperate with the limiting groove.

[0014] As a preferred embodiment, a sealing cap is installed on the hole, and an arc-shaped groove is formed on the edge of the sealing cap.

[0015] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0016] This invention uses a fixing mechanism and a reinforcement mechanism to restrict the movement of the cover plate in multiple ways, thereby ensuring the stability of the connection between the cover plate and the box body and avoiding incidents of injury caused by easy disassembly of the cover plate. In addition, the components of the fixing mechanism and the processing mechanism are all installed on the lower end face of the cover plate. That is, after the cover plate is connected to the box body, it is located inside the box body, thereby avoiding the problem of components being exposed to the outside, which would increase safety risks, as well as easy disassembly and damage.

[0017] The fixing mechanism of this invention connects the stepped cylinder and the fixing plate through a No. 1 screw. The fixing plate is installed on the drain valve, thereby connecting and fixing the cover plate and the drain valve. The No. 2 screw is installed inside the drain button, which is not easy to find and disassemble, so as to ensure the fixation between the stepped cylinder and the fixing plate.

[0018] The reinforcement mechanism of this invention is manually inserted into the slot by a specially designed external wrench. After the external wrench is rotated, the shaft is rotated, which prevents the reinforcement mechanism from being easily released from its fixed state. The rotation of the shaft drives the limiting rod through the connecting plate, push-pull plate, cylinder and teeth, so that the limiting rod is inserted into the insertion hole of the fixing ring and the box body, so as to further fix the cover plate and improve the stability of the fixation between the cover plate and the box body.

[0019] The limiting component of this invention causes the cylinder to rotate by the movement of the push-pull plate and the meshing of the toothed plate and teeth. During the rotation of the cylinder, the limiting column rotates to the horizontal section of the limiting groove, thereby restricting the vertical movement of the cover plate and further reinforcing the connection between the cover plate and the box.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the main structure of this application;

[0023] Figure 2 for Figure 1 A second-person structural diagram (hiding the toilet seat and cutting off part of the box);

[0024] Figure 3 for Figure 1 Sectional view of the fixed mechanism;

[0025] Figure 4 for Figure 2 Schematic diagram of the reinforcement mechanism;

[0026] Figure 5 This is a structural diagram showing the relationship between the drive component, teeth, tooth plate, and limit rod.

[0027] Figure 6 Exploded view of the structure between the cylindrical column and the drain valve;

[0028] Figure 7 A partial structural cross-sectional view of the driving component and the contact component;

[0029] Figure 8 An exploded view of the area between the sealing cap and the hole;

[0030] Figure 9 for Figure 4 Enlarged view of the structure at point A in the image.

[0031] Figure label:

[0032] 10. Toilet seat; 11. Toilet housing; 12. Drain valve; 13. Toilet seat; 14. Retaining ring; 2. Fixing mechanism; 20. Stepped cylinder; 21. Nut; 22. Cylindrical column; 23. Fixing plate; 24. Control component; 240. Upright column; 241. Rectangular plate; 242. Drain button; 243. Compression spring; 3. Reinforcing mechanism; 30. Limiting rod; 31. Tooth; 32. Sliding plate; 33. 34. L-shaped plate; 35. Toothed plate; 36. Limiting component; 37. Limiting groove; 38. Limiting post; 39. Driving component; 30. Tube body; 31. Rotating shaft; 32. Groove; 33. Column; 34. Support plate; 35. Connecting plate; 366. T-shaped screw block; 37. Abutting component; 38. Stopping block; 39. Slide groove; 30. Compression spring; 31. Abutting block; 4. Sealing cover. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figure 1 and Figure 2 As shown, a toilet seat 10 is a toilet seat 10 with a cover 11. The toilet seat 10 has a cover 11, and the cover 11 has a drain valve 12 inside. The drain valve 12 has two flushing buttons on its upper end. The cover 11 has a cover plate 13. The lower end of the cover plate 13 has a fixing ring 14 along its shape. The cover plate 13 has a fixing mechanism 2 for connecting and fixing with the drain valve 12. The lower end of the cover plate 13 has a reinforcing mechanism 3 for connecting and fixing with the cover 11.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the fixing mechanism 2 includes a through hole. The cover plate 13 has a through hole in the middle. A stepped cylinder 20 with an open upper end face is provided in the through hole. The lower end of the stepped cylinder 20 extends to the bottom of the cover plate 13. The cover plate 13 is fixed to the stepped cylinder 20 by a nut 21. The upper end face of the horizontal end of the stepped cylinder 20 has an arc-shaped structure. A cylindrical column 22 is rotatably installed on the lower part of the cover plate 13 to connect the cover plate 13 and the box body 11 in conjunction with the reinforcing mechanism 3. The water level in the box body 11 is lower than the lower end face of the cylindrical column 22 to avoid water erosion of the parts on the cover plate 13. A fixing plate 23 is fixedly installed on the upper end face of the drain valve 12. The fixing plate 23 has an inverted U-shaped structure. The fixing plate 23 is connected to the stepped cylinder 20 by a No. 1 screw. A control component 24 for controlling water discharge is provided in the stepped cylinder 20.

[0036] like Figure 3 As shown, the control component 24 includes a column 240. Each of the two buttons of the drain valve 12 is provided with a column 240. The upper part of the column 240 extends into the stepped cylinder 20. A rectangular plate 241 is provided on the upper end face of the column 240. Two drain buttons 242 are slidably installed in the stepped cylinder 20. A rectangular groove that mates with the rectangular plate 241 is opened on the lower end face of the drain button 242. The drain button 242 and the rectangular plate 241 are connected by a No. 2 screw. A compression spring 243 is sleeved on the column 240 in the stepped cylinder 20. The lower end of the compression spring 243 is connected to the stepped cylinder 20.

[0037] In practice, first, the fixing plate 23 is installed on the drain valve 12. Then, the stepped cylinder 20 is passed through the through hole and locked onto the cover plate 13 with the nut 21. Then, the cover plate 13 is placed so that the upper end of the column 240 passes into the stepped cylinder 20. Then, the fixing plate 23 is fixed to the stepped cylinder 20 with the first screw. Then, a drain button 242 is installed and fixed to the rectangular plate 241 with the second screw. Then, another drain button 242 is installed and the fixed drain button 242 is pressed. Then, the other drain button 242 is fixed to the corresponding rectangular plate 241 with the second screw. The drain button 242 is fixed to the rectangular plate 241 from the side to increase its concealment and prevent mental patients from easily discovering and disassembling it. The above operation can complete the fixation of the cover plate 13 and the box 11, preventing the cover plate 13 from being easily disassembled.

[0038] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the reinforcement mechanism 3 includes limiting rods 30. The lower end of the cover plate 13 is symmetrically fitted with limiting rods 30 via bearing seats. The limiting rods 30 have a U-shaped structure, and the bearing seats are mounted on the cover plate 13. The fixing ring 14 and the housing 11 both have insertion holes that mate with the limiting rods 30. The outer circumferential wall of the upper part of the cylindrical column 22 is evenly provided with teeth 31 along its circumferential direction. A push-pull plate 32 is provided on each of the left and right sides of the cylindrical column 22, and an L-shaped plate 33 is installed on the opposite sides of each of the two push-pull plates 32. Each of the vertical sections of the two L-shaped plates 33 has a toothed plate 34 that meshes with the tooth 31. A limiter 35 is provided between the cylinder 22 and the drain valve 12. The push-pull plate 32 on the left side is fixedly connected to the limit rod 30 on the front side, and the push-pull plate 32 on the right side is fixedly connected to the limit rod 30 on the rear side. The ends of the two push-pull plates 32 away from the corresponding fixed limit rods 30 are slidably engaged with the limit rods 30 on the other side. A drive member 36 for driving the push-pull plates 32 is provided on the cover plate 13.

[0039] like Figure 5 and Figure 6 As shown, the limiting member 35 includes a limiting groove 350. The circumferential outer wall of the drain valve 12 is symmetrically provided with limiting grooves 350. The limiting groove 350 is divided into a vertical section and a horizontal section. The inner wall of the cylinder 22 is provided with a limiting post 351 that slides with the limiting groove 350.

[0040] In actual operation, the driving component 36 drives the rear limiting rod 30 to move into the insertion hole. During the movement of the rear limiting rod 30, the left push-pull plate 32 drives the left toothed plate 34 to mesh with the teeth 31, causing the cylinder 22 to rotate. The rotation of the cylinder 22 causes the right toothed plate 34 to move forward. The right toothed plate 34 then pushes the limiting rod 30 to move forward into the corresponding insertion hole through the right push-pull plate 32, thereby further restricting the movement of the cover plate 13 and improving the stability of the fixation between the cover plate 13 and the box 11. During the rotation of the cylinder 22, the limiting post 351 will slide into the horizontal section of the limiting groove 350 to restrict the up and down movement of the cover plate 13, thereby further improving the stability of the fixation of the cover plate 13.

[0041] like Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 9As shown, the driving component 36 includes a hole. The cover plate 13 has a hole, and the hole, the through hole, the insertion hole, and the bearing are all manufactured together with the cover plate 13 and the housing 11. A tube 360 ​​is fixedly installed in the hole by a T-shaped screw block 366. A rotating shaft 361 is rotatably installed inside the tube 360. A slot 362 is opened on the upper end face of the rotating shaft 361, and the slot 362 has an equilateral triangular structure. A column 363 is provided in the middle of the slot 362. The lower end of the rotating shaft 361 extends to the bottom of the cover plate 13. A support plate 364 is installed on the lower end face of the rotating shaft 361. A connecting plate 365 is eccentrically hinged to the lower end face of the support plate 364 and the rotating shaft 361. The other end of the connecting plate 365 is hinged to the limiting rod 30. An abutment 37 is provided between the horizontal section of the rotating shaft 361 and the T-shaped screw block 366.

[0042] like Figure 5 , Figure 7 and Figure 9 As shown, the abutting member 37 includes abutting block 370. Abutting blocks 370 are evenly arranged on the inner side of the horizontal section of the T-shaped screw block 366. A sliding groove 371 is symmetrically opened on the left and right sides of the rotating shaft 361. An abutting block 373 is slidably installed in the sliding groove 371 through the cooperation of the compression spring 372, and the abutting block 373 abuts against the abutting block 370.

[0043] In practice, a specially designed external wrench is used in conjunction with the slot 362 and the column 363 to allow rotation. During the rotation of the shaft 361, the support plate 364 drives the connecting plate 365 to rotate. The rotation of the connecting plate 365 causes the limiting rod 30 to move, allowing the limiting rod 30 to pass through the insertion hole of the fixing ring 14 and the insertion hole of the box 11 in sequence, thereby fixing the cover plate 13. In addition, the column 363 and the abutting block 373 in the middle of the slot 362 increase the force required for the shaft 361 to rotate through the abutting cooperation of the compression spring 372 and the stop block 370, thereby preventing others from easily rotating the shaft 361 with other tools, which would affect the fixation between the cover plate 13 and the box 11.

[0044] like Figure 8 As shown, a sealing cover 4 is installed on the hole, and an arc-shaped groove is opened on the edge of the sealing cover 4. In actual operation, the sealing cover 4 can prevent water from entering the hole and corroding the parts, while the arc-shaped groove makes it easy for maintenance personnel to pry up the sealing cover 4 to disassemble the cover plate 13 for maintenance of the internal parts of the box 11.

[0045] When using this invention to fix the toilet seat 11 cover, first install the fixing plate 23 on the drain valve 12, then pass the stepped cylinder 20 through the through hole and lock it on the cover plate 13 with the nut 21, then place the cover plate 13 so that the column 240 passes into the stepped cylinder 20, and then connect and fix the two drain buttons 242 to the rectangular plate 241 with the No. 1 screw. Then, through the cooperation of the specially made external wrench with the slot 362 and the column 363, the external wrench drives the rotating shaft 361 to rotate. The rotating shaft 361 moves the limiting rod 30 through the connecting plate 365, so that the limiting rod 30 is inserted into the insertion hole of the cover plate 13 and the insertion hole of the seat 11 in sequence, so as to further improve the stability of the fixation between the cover plate 13 and the seat 11. At the same time, the limiting column 351 moves to the horizontal section of the limiting groove 350, further restricting the vertical movement of the cover plate 13, thereby preventing others from easily disassembling the cover plate 13 and causing injury to themselves or others.

[0046] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0047] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A detachable toilet tank lid fixing device, comprising a toilet seat (10); characterized in that: The toilet seat (10) is provided with a housing (11), and a drain valve (12) is provided inside the housing (11). Two flushing buttons are provided on the upper end of the drain valve (12). A cover plate (13) is provided on the housing (11). A fixing ring (14) is provided along the shape of the lower end face of the cover plate (13). A fixing mechanism (2) for connecting and fixing with the drain valve (12) is provided on the cover plate (13). A reinforcing mechanism (3) for connecting and fixing with the housing (11) is provided on the lower end face of the cover plate (13). Wherein: The fixing mechanism (2) includes a through hole. The cover plate (13) has a through hole in the middle. A stepped cylinder (20) with an open upper end face is provided in the through hole. The lower end of the stepped cylinder (20) extends to the bottom of the cover plate (13). The cover plate (13) is fixed to the stepped cylinder (20) by a nut (21). The upper end face of the horizontal end of the stepped cylinder (20) has an arc-shaped structure. A cylinder column (22) for connecting the cover plate (13) and the box body (11) is rotatably installed on the lower part of the cover plate (13) to cooperate with the reinforcement mechanism (3). A fixing plate (23) is fixedly installed on the upper end face of the drain valve (12). The fixing plate (23) has an inverted U-shaped structure. The fixing plate (23) is connected to the stepped cylinder (20) by a No. 1 screw. A control component (24) for controlling the water discharge is provided in the stepped cylinder (20). The reinforcement mechanism (3) includes a limiting rod (30). The lower end of the cover plate (13) is symmetrically equipped with limiting rods (30) through bearing seats. The limiting rods (30) are U-shaped and the bearing seats are set on the cover plate (13). The fixing ring (14) and the box (11) are both provided with insertion holes that cooperate with the limiting rods (30). The outer circumferential wall of the upper part of the cylinder (22) is evenly provided with teeth (31) along its circumferential direction. A push-pull plate (32) is provided on each of the left and right sides of the cylinder (22). An L-shaped plate (33) is installed on the opposite back of each of the two push-pull plates (32). Each of the vertical sections of the L-shaped plate (33) is equipped with a toothed plate (34) that meshes with the tooth (31). A limiter (35) is provided between the cylinder (22) and the drain valve (12). The push-pull plate (32) on the left side is fixedly connected to the limit rod (30) on the front side, and the push-pull plate (32) on the right side is fixedly connected to the limit rod (30) on the rear side. The ends of the two push-pull plates (32) away from the corresponding fixedly connected limit rods (30) are slidably engaged with the limit rods (30) on the other side. A drive (36) for driving the push-pull plates (32) is provided on the cover plate (13).

2. The toilet tank lid fixing device for preventing disassembly according to claim 1, characterized in that: The drive component (36) includes a hole. The cover plate (13) has a hole. A tube (360) is fixedly installed in the hole by a T-shaped screw block (366). A rotating shaft (361) is rotatably installed inside the tube (360). A slot (362) is opened on the upper end face of the rotating shaft (361). The slot (362) has an equilateral triangular structure. A column (363) is provided in the middle of the slot (362). The lower end of the rotating shaft (361) extends to the bottom of the cover plate (13). A support plate (364) is installed on the lower end face of the rotating shaft (361). A connecting plate (365) is eccentrically hinged to the lower end face of the support plate (364) and the rotating shaft (361). The other end of the connecting plate (365) is hinged to the limiting plate. An abutment (37) is provided between the horizontal section of the rotating shaft (361) and the T-shaped screw block (366).

3. The toilet tank lid fixing device for preventing disassembly according to claim 1, characterized in that: The control component (24) includes a column (240). Each of the two buttons of the drain valve (12) is provided with a column (240). The upper part of the column (240) extends into the stepped cylinder (20). A rectangular plate (241) is provided on the upper end face of the column (240). Two drain buttons (242) are slidably installed in the stepped cylinder (20). A rectangular groove that mates with the rectangular plate (241) is opened on the lower end face of the drain button (242). The drain button (242) and the rectangular plate (241) are connected by a No. 2 screw. A compression spring (243) is sleeved on the column (240) in the stepped cylinder (20). The lower end of the compression spring (243) is connected to the stepped cylinder (20).

4. The toilet tank lid fixing device for preventing disassembly according to claim 2, characterized in that: The abutting member (37) includes a stop block (370). The stop blocks (370) are evenly arranged on the inner side of the horizontal section of the T-shaped screw block (366). A sliding groove (371) is symmetrically opened on the left and right sides of the rotating shaft (361). An abutting block (373) is slidably installed in the sliding groove (371) in cooperation with the compression spring (372), and the abutting block (373) abuts against the stop block (370).

5. The toilet tank lid fixing device for preventing disassembly according to claim 1, characterized in that: The limiting component (35) includes a limiting groove (350). The drain valve (12) has symmetrically opened limiting grooves (350) on its outer circumference. The limiting groove (350) is divided into a vertical section and a horizontal section. The inner wall of the cylinder (22) is provided with a limiting post (351) that slides with the limiting groove (350).

6. The toilet tank lid fixing device for preventing disassembly according to claim 2, characterized in that: A sealing cap (4) is installed on the hole, and an arc-shaped groove is provided on the edge of the sealing cap (4).

Images