Pressure overflow water closet and wash basin using the same

Abstract

The application discloses a pressure overflow water outlet device and a wash basin with the same, wherein the pressure overflow water outlet device comprises a main body, an inlet cavity and an overflow cavity are defined in the main body and are communicated with each other, the inlet cavity is provided with an inlet end, and the overflow cavity is provided with an outlet end; a sealing assembly is movably arranged in the overflow cavity, water pressure formed by the communication between the overflow cavity and the inlet cavity forms a thrust on the sealing assembly, the thrust increases with the increase of the water pressure; a first elastic member has a first elastic force on the sealing assembly, the first elastic force is opposite to the thrust; the first elastic force pushes the sealing assembly to be blocked at the outlet end, the thrust pushes the sealing assembly to move in a direction away from the outlet end, and the sealing assembly gradually moves away from the outlet end with the increase of the thrust; the water pressure formed by the outside and the pressure overflow water outlet device are matched in a mechanical structure, the automatic switching function of drainage and blocking is realized, and the use is very convenient.

Description

Technical Field

[0001] This invention relates to the field of drainer technology, and in particular to a pressure overflow drainer and a washbasin using the same. Background Technology

[0002] For containers that can store water, it is necessary to constantly monitor whether the water level has reached its maximum during the filling process. If the filling is not stopped in time, the water in the container will overflow and affect the surrounding environment. If an overflow outlet is opened at the top of the container for overflow, foreign objects can enter the container through the overflow outlet and contaminate the liquid inside. Summary of the Invention

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

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

[0005] The present invention also proposes a washbasin having the above-mentioned pressure overflow drain device.

[0006] According to a first aspect of the present invention, a pressure overflow drainage device includes:

[0007] The main body has an internally defined inlet chamber and an overflow chamber that are interconnected. The inlet chamber has an inlet end and the overflow chamber has an outlet end.

[0008] A water-sealing component is movably installed in the overflow chamber. The water pressure formed by the connection between the overflow chamber and the inlet chamber exerts a thrust on the water-sealing component, and the thrust increases with the increase of the water pressure.

[0009] The first elastic element has a first elastic force on the water sealing component that is opposite to the direction of the thrust.

[0010] The first elastic force pushes the water sealing component to block the water outlet, and the thrust pushes the water sealing component to move away from the water outlet. As the thrust increases, the water sealing component gradually moves away from the water outlet.

[0011] The pressure overflow drainage device according to the present invention has at least the following advantages: by utilizing the externally generated water pressure and the pressure overflow drainage device to form a mechanical structure cooperation, the automatic switching function of drainage and sealing can be realized, which is very convenient to use.

[0012] According to some embodiments of the present invention, the water sealing assembly includes a plug and a movable plug, the movable plug slidingly abutting against the inner wall of the overflow chamber and dynamically dividing the overflow chamber into a pressure chamber and a water-blocking chamber, the water inlet chamber communicating with the pressure chamber, the water outlet being opened at the pressure chamber, and the plug being located in the pressure chamber and capable of sealing the water outlet.

[0013] According to some embodiments of the present invention, the first elastic element is installed in the water-proof cavity.

[0014] According to some embodiments of the present invention, the water sealing assembly further includes a pressure plate and a movable seat. One end of the movable seat is provided with a pressure ring. The pressure plate is mounted on the movable seat, and a clamping space is formed between the pressure plate and the pressure ring. The movable plug is disc-shaped and clamped in the clamping space. The circumferential direction of the movable plug protrudes radially from the clamping space along its edge and abuts against the inner wall of the overflow chamber. The plug is disposed on the end of the movable seat away from the pressure ring.

[0015] According to some embodiments of the present invention, the water outlet is configured as a tapered constriction that gradually narrows from the overflow cavity toward the outside of the main body, the plug is cylindrical, the plug and the water outlet are on the same axis, the outer diameter of the plug is larger than the minimum inner diameter of the water outlet, and a sealing ring is fitted on the circumferential outer wall of the plug, the sealing ring being able to abut against the inner wall of the water outlet.

[0016] According to some embodiments of the present invention, a driving component is further included, the driving component being slidably connected to the water sealing component, the driving component being movable relative to the main body to a first position and a second position; when in the first position, the water sealing component is movable in the overflow chamber due to the change in thrust; when in the second position, the driving component controls the water sealing component to remain in a position away from the water outlet end.

[0017] According to some embodiments of the present invention, the drive assembly includes a spring-loaded mechanism, the spring-loaded mechanism including a housing, a telescopic rod and a positioning member, the housing being fixedly installed relative to the main body, the telescopic rod being slidably installed in the housing and switching between a first position and a second position, one end of the telescopic rod being slidably connected to the water-sealing assembly, and the positioning member being used to hold the telescopic rod in the first position or the second position.

[0018] According to some embodiments of the present invention, the telescopic rod is provided with a limiting groove, the limiting groove having a first limiting position and a second limiting position, the positioning member being an elastic clip, one end of the elastic clip being slidably connected in the limiting groove, and the other end of the elastic clip being connected to the outer shell;

[0019] When the telescopic rod is in the first position, one end of the elastic locking strip is engaged with the first limiting position;

[0020] When the telescopic rod is in the second position, one end of the elastic locking strip is engaged with the second limiting position.

[0021] According to some embodiments of the present invention, a second elastic element is provided between the telescopic rod and the outer shell, the second elastic element exerting a second elastic force on the telescopic rod, the direction of the second elastic force being consistent with the direction in which the telescopic rod moves from the first position to the second position.

[0022] According to some embodiments of the present invention, the driving assembly further includes a pressing member slidably mounted on the housing, the pressing member being able to abut against the telescopic rod and push the telescopic rod toward the first position, and a third elastic member being installed between the pressing member and the housing, the third elastic member having a third elastic force on the pressing member, the third elastic force being consistent with the direction in which the telescopic rod moves from the first position to the second position.

[0023] According to some embodiments of the present invention, a connecting seat is further included, the interior of which defines a water passage cavity, one end of which defines a water inlet, the other end of which is connected to the main body and communicates with the water inlet cavity, the pressing member extends into the water passage cavity, and a filter disc is provided on the end of the pressing member away from the telescopic rod; under the action of the third elastic force, the pressing member extends to the maximum extension stroke outside the housing, and the filter disc is flush with and intercepts the water inlet.

[0024] A washbasin according to a second aspect of the present invention includes a basin and a pressure overflow drain device, the pressure overflow drain device being installed at the drain outlet of the basin.

[0025] The washbasin according to an embodiment of the present invention has at least the following beneficial effects: it realizes the automatic overflow function for a washbasin that does not have an overflow structure by using a pressure overflow drain device.

[0026] 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

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a partial structural diagram of a pressure overflow drainage device;

[0029] Figure 2 yes Figure 1 A structural decomposition diagram;

[0030] Figure 3 This is a schematic diagram of the internal structure of the main body;

[0031] Figure 4 This is a schematic diagram of the water sealing component;

[0032] Figure 5 yes Figure 4 A structural decomposition diagram;

[0033] Figure 6 This is a schematic diagram showing the plug sealing the water outlet when the telescopic rod is in the first position;

[0034] Figure 7 This is a schematic diagram showing the plug leaving the outlet when the telescopic rod is in the first position;

[0035] Figure 8 This is a schematic diagram of the telescopic pole in the second position;

[0036] Figure 9 This is an exploded view of the spring-loaded mechanism.

[0037] Figure 10 This is a schematic diagram of the spring-loaded mechanism in its first position;

[0038] Figure 11 This is a schematic diagram of the spring-loaded mechanism in the second position;

[0039] Figure 12 This is a structural diagram of the telescopic rod;

[0040] Figure 13 yes Figure 12 A diagram from another perspective;

[0041] Figure 14 yes Figure 1 A schematic diagram showing the assembly of the connector.

[0042] Figure 15 This is a schematic diagram of the connector structure;

[0043] Figure 16 This is a diagram of a washbasin;

[0044] Figure 17 yes Figure 16 Another perspective illustration.

[0045] Reference numerals: Main body 100; Water inlet chamber 110; Water inlet end 111; Overflow chamber 120; Water outlet end 121; Pressure chamber 122; Water-proof chamber 123; Mounting plate 130; Water sealing assembly 200; Plug 210; Sealing ring 211; Moving plug 220; Pressure plate 230; Moving seat 240; Pressure ring 241; First elastic element 300; Drive assembly 400; Spring pressing mechanism 410; Outer shell 411; Telescopic rod 412; Positioning component 413; Limiting groove 420; First limiting position 421; Second limiting position 422; First groove segment 423; Second groove segment 424; Third groove segment 425; First step 426; Second step 427; Third step 428; Fourth step 429; Second elastic element 430; Pressing element 440; Filter plate 441; Third elastic element 450; Limiting block 460; Elastic clamp 470; Connecting seat 500; Water passage cavity 510; Water inlet 511; Basin 600. Detailed Implementation

[0046] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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 invention 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 invention.

[0048] Furthermore, the terms "first" and "second" 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" or "second" may explicitly or implicitly include one or more 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.

[0049] Reference Figure 1 , Figure 16 and Figure 17This is a pressure overflow drain device that can be installed on water storage containers such as liquid storage tanks and washbasins. The pressure overflow drain device is connected to the container's cavity. During the water filling process, once the water pressure reaches a certain value, the pressure overflow drain device is activated to discharge water, preventing excessive water from overflowing the container. (See reference...) Figure 1 and Figure 2 The pressure overflow drainage device includes a main body 100, a water-sealing assembly 200, and a first elastic element 300. The outer contour of the main body 100 is cylindrical. It is conceivable that the outer contour of the main body 100 is not limited to a cylindrical shape, but can also be cubic, spherical, etc. (Refer to...) Figure 3 The main body 100 internally defines an inlet chamber 110 and an overflow chamber 120. The inlet chamber 110 and the overflow chamber 120 are interconnected. The relative positions of the inlet chamber 110 and the overflow chamber 120 are not limited; they can be arranged side-by-side, or the overflow chamber 120 can be located within the inlet chamber 110, with the inlet chamber 110 surrounding the overflow chamber 120, etc. The overflow chamber 120 and the inlet chamber 110 can be separated by a shared chamber wall, with an opening in the wall for communication; or they can be connected by a pipe, etc. The water inlet chamber 110 has a water inlet end 111, which can be located at the top or side wall of the water inlet chamber 110; the overflow chamber 120 has a water outlet end 121, which can be located at the bottom or side wall of the overflow chamber 120. Referring to Figure 3, this figure shows one embodiment of the main body 100. The outer contour of the main body 100 is cylindrical, and inside the main body 100 is a cylindrical cavity wall that divides the interior of the main body 100 into the water inlet chamber 110 and the overflow chamber 120. The water inlet chamber 110 surrounds the overflow chamber 120. The bottom of the cavity wall shared by the water inlet chamber 110 and the overflow chamber 120 is open, allowing communication between the water inlet chamber 110 and the overflow chamber 120. The water inlet end 111 can be located at the top of the water inlet chamber 110, and the water outlet end 121 can be located at the bottom of the overflow chamber 120. (Refer to Figure 3) Figure 6 and Figure 7The water-sealing assembly 200 is installed in the overflow chamber 120 and can move within the overflow chamber 120. When external water flows into the inlet chamber 110 from the inlet end 111, the water flows along the inlet chamber 110 into the overflow chamber 120. The water pressure formed by the water in the inlet chamber 110 and the overflow chamber 120 acts on the water-sealing assembly 200, creating a thrust. The magnitude of this thrust changes with the water pressure. When the water pressure increases, the thrust also increases; when the water pressure decreases, the thrust also decreases. The first elastic element 300 can be installed inside the main body 100. The first elastic element 300 acts on the water-sealing assembly 200 and exerts a first elastic force on it. The first elastic element 300 can be a spring, a sheet, or a ball, etc., but is not limited to these. The first elastic force and the thrust are in opposite directions. Specifically, the first elastic force pushes the water-sealing assembly 200 towards the outlet end 121. Under the push of the first elastic force, one end of the water-sealing component 200 can abut against the water outlet 121 and seal the water outlet 121. The end of the water-sealing component 200 can cover the water outlet 121 or extend into the water outlet 121 for sealing. Depending on the spatial relative position of the sealing component and the water outlet 121, if the sealing component and the water outlet 121 are distributed vertically, the sealing component can also seal the water outlet 121 downwards according to its own gravity and the first elastic force. The direction of the thrust is to make the water-sealing component 200 move away from the water outlet 121. After water enters the water inlet chamber 110 and the overflow chamber 120, the thrust increases with the increase of water pressure. When the thrust is greater than the first elastic force, the water-sealing component 200 gradually moves away from the water outlet 121. The water outlet 121 gradually switches from the sealed state to the open state, allowing water to be discharged from the water outlet 121.

[0050] In actual use, refer to Figure 16 and Figure 17 The pressure overflow drain device can be installed at the bottom of the container, and can be installed vertically or horizontally. The inlet end 111 is connected to the container's cavity. (See reference...) Figure 6 Initially, the water-sealing assembly 200 is positioned to block the outlet 121. Water is injected into the container, flowing into the inlet chamber 110 and the overflow chamber 120. At this time, the water pressure is low, and the thrust is less than the first elastic force. As the water level rises in the container, the water pressure in the inlet chamber 110 and the overflow chamber 120 gradually increases, and the thrust also gradually increases. (Refer to...) Figure 7When the water reaches the container's storage limit depth, the thrust exceeds the first elastic force, pushing the sealing component 200 to move. The sealing component 200 moves away from the outlet 121, and the water in the container is discharged through the outlet 121, preventing excessive water from overflowing into the external environment. The outlet 121 can be connected to a sewer or other water storage container. After the water in the container stops increasing, the water is discharged to a certain level through the pressure overflow drain device. The thrust then becomes less than the first elastic force, and the sealing component 200 moves to re-seal the outlet 121. Different models of the first elastic element 300 generate different magnitudes of first elastic force on the sealing component 200, which can be matched to different containers for use. Under normal conditions, the sealing component 200 seals the outlet 121 to prevent foreign objects from entering the container through the pressure overflow drain device. The external water pressure and the pressure overflow drain device work together mechanically to achieve automatic switching between drainage and sealing functions, making it very convenient to use.

[0051] Reference Figure 4 , Figure 5 and Figure 6 The water-sealing assembly 200 includes a plug 210 and a movable plug 220. The plug 210 and the movable plug 220 are distributed along the direction of movement of the water-sealing assembly 200. The plug 210 is used to seal the outlet end 121. The movable plug 220 abuts against the interior of the overflow chamber 120, dividing the overflow chamber 120 into a pressure chamber 122 and a water-blocking chamber 123. As the water-sealing assembly 200 moves, the pressure chamber 122 and the water-blocking chamber 123 dynamically change. The inlet chamber 110 and the pressure chamber 122 are interconnected, and the outlet end 121 is located on the pressure chamber 122. The thrust generated by the water pressure acts on the side of the movable plug 220 facing the pressure chamber 122. The thrust pushes the movable plug 220 to translate, increasing the volume of the pressure chamber 122 and decreasing the volume of the water-blocking chamber 123. This achieves the pushing effect of water pressure on the water-sealing assembly 200. The first elastic element 300 can be installed in any position. It can be installed in the pressure chamber 122, where the first elastic force pulls the water-sealing assembly 200 towards the water outlet 121. Alternatively, it can be installed in the water-blocking chamber 123, where one end of the first elastic element 300 abuts against the movable plug 220, pushing the movable plug 220 towards the water outlet 121. This prevents water from entering the water-blocking chamber 123 and also protects the first elastic element 300.

[0052] The main body of the water-sealing component 200 can be a one-piece molded component or an assembly composed of multiple parts. (Refer to...) Figure 4 , Figure 5 and Figure 6The sealing assembly 200 includes a pressure plate 230 and a movable seat 240. The movable seat 240 can be cylindrical, but is not limited to this. One end of the movable seat 240 serves as a plug 210, and the other end is provided with a pressure ring 241. The pressure ring 241 can be annular. The pressure plate 230 is installed on the end of the movable seat 240 where the pressure ring 241 is located. The pressure plate 230 and the movable seat 240 can be connected by means of threaded connection, snap-fit, or screw fixing. The shape of the pressure plate 230 can be adapted to the shape of the pressure ring 241, forming a clamping space between them. The movable plug 220 is disc-shaped, and the material of the movable plug 220 can be rubber or other materials. The movable plug 220 is installed in the clamping space and is clamped between the pressure plate 230 and the pressure ring 241. The movable plug 220 protrudes radially from the clamping space along its circumferential edge. The circumferential edge of the movable plug 220 abuts against the inner wall of the overflow chamber 120. The circumferential edge of the movable plug 220 experiences friction against the inner wall of the overflow chamber 120. During movement, the circumferential edge of the movable plug 220 undergoes a certain deformation. The pressure ring 241 and pressure plate 230 are used to position the movable plug 220 axially and prevent deformation of the middle part of the movable plug 220. Part of the thrust also needs to overcome the friction between the movable plug 220 and the overflow chamber 120.

[0053] The water sealing component 200 can be used to seal the outlet end 121 by covering it with a cover plate, but it is not limited to this method. See Figure [reference needed]. Figure 7 The outlet end 121 is tapered and gradually narrows from the overflow chamber 120 towards the outside of the main body 100. The plug 210 is cylindrical. The plug 210 and the outlet end 121 are on the same axis. The outer diameter of the plug 210 is larger than the minimum inner diameter of the outlet end 121. A sealing ring 211 is fitted onto the circumferential outer wall of the plug 210. The plug 210 moves axially, and the sealing ring 211 abuts against the inner wall of the outlet end 121. In the sealed state, the plug 210 can always maintain full contact with the tapered outlet end 121 under the push of the first elastic force, ensuring the sealing effect.

[0054] Based on the above structure, the pressure overflow drainage device is further enhanced with a drive assembly 400. (Refer to...) Figure 6 The drive component 400 extends into the main body 100 and is slidably connected to the sealing component 200. The drive component 400 can move relative to the main body 100 to a first position and a second position, and can switch between the first position and the second position. (Refer to...) Figure 6 and Figure 7 The drive assembly 400 is in the first position. In the first position, the sealing assembly 200 can move within the overflow chamber 120 according to the combination of the first elastic force and the thrust, without being restricted by the drive assembly 400. (Refer to...) Figure 8The drive assembly 400 is in the second position. In the second position, the drive assembly 400 moves the sealing assembly 200 to a position away from the outlet 121 and holds it there, with the outlet 121 in the open state. Water in the container can be continuously discharged along the inlet 111, inlet chamber 110, overflow chamber 120, and outlet 121. The drive assembly 400 enhances the continuous drainage function of the pressure overflow drain device.

[0055] The drive assembly 400 can employ either a manual or electric control structure. The electric control structure uses a motor for drive control. (See reference...) Figure 9 , Figure 10 and Figure 11 The drive assembly 400 includes a spring-loaded mechanism 410, which in this example is a manually controlled structure. The spring-loaded mechanism 410 includes a housing 411, a telescopic rod 412, and a positioning member 413. The housing 411 can be cylindrical, but is not limited to this. The housing 411 can be inserted into the main body 100 from the water inlet end 111. A mounting plate 130 is provided inside the main body 100, and one end of the housing 411 can be connected to the mounting plate 130 by means of threaded connection or other means. The housing 411 remains stationary relative to the main body 100. The telescopic rod 412 is slidably mounted in the housing 411. The telescopic rod 412 moves axially relative to the housing 411 between a first position and a second position. One end of the telescopic rod 412 extends into the overflow chamber 120 and is slidably connected to the sealing assembly 200. The sliding connection between the telescopic rod 412 and the water-sealing assembly 200 can be achieved by the water-sealing assembly 200 being hollow, with one end of the telescopic rod 412 passing through it. A limiting block 460 is installed at the end of the telescopic rod 412 that penetrates into the water-sealing assembly 200, preventing the telescopic rod 412 from detaching from the water-sealing assembly 200. When the telescopic rod 412 switches from the first position to the second position, the limiting block 460 pulls the water-sealing assembly 200, causing it to move away from the water outlet 121. When the telescopic rod 412 is in the first position, the limiting block 460 does not contact the water-sealing assembly 200 inside it, and the water-sealing assembly 200 moves independently under the combined action of the thrust and the first elastic force. A positioning member 413 is connected to the telescopic rod 412 to hold the telescopic rod 412 in either the first or second position. The positioning component 413 can use structural forms such as insert rods, pins, and clips to fix the telescopic rod 412.

[0056] Among them, reference Figure 9 , Figure 10 and Figure 11A limiting groove 420 is formed on the telescopic rod 412. The limiting groove 420 has a first limiting position 421 and a second limiting position 422. A positioning member 413 is a resilient locking strip. The resilient locking strip can be fixed to the outer casing 411 by an resilient clamp 470. Both ends of the resilient locking strip are bent; one end of the resilient locking strip is engaged with the outer casing 411, and the other end is slidably connected to the limiting groove 420. When the telescopic rod 412 switches between the first and second positions, the end of the resilient locking strip moves along the limiting groove 420. (Refer to...) Figure 10 When the telescopic rod 412 is in the first position, one end of the elastic locking strip engages with the first limiting position 421, thereby positioning the telescopic rod 412 in the first position. (Refer to...) Figure 11 When the telescopic rod 412 is in the second position, one end of the elastic locking strip engages with the second limiting position 422, thereby positioning the telescopic rod 412 in the second position. (Refer to...) Figure 12 and Figure 13 This is one embodiment of the limiting groove 420. The limiting groove 420 includes a first groove segment 423, a second groove segment 424, and a third groove segment 425 that are interconnected. In the illustrated direction, the first groove segment 423 and the second groove segment 424 are arranged in a "Y" shape, with the lower ends of the first groove segment 423 and the second groove segment 424 vertically offset. The third groove segment 425 is "√" shaped, with the upper end of the first groove segment 423 connected to the left end of the third groove segment 425, and the upper end of the second groove segment 424 connected to the right end of the third groove segment 425. The downwardly recessed tip in the middle of the third groove segment 425 serves as the first limiting position 421, and the lowest point of the lower end of the second groove segment 424 serves as the second limiting position 422. The connection position between the first groove segment 423 and the second groove segment 424 has a first step 426, and the groove depth (groove depth) of the first groove segment 423 at the position corresponding to the first step 426 is less than the groove depth of the second groove segment 424. The connection between the second groove segment 424 and the third groove segment 425 has a second step 427. The groove depth (groove depth) of the second groove segment 424 at the corresponding position of the second step 427 is less than the groove depth of the third groove segment 425. The bend inside the third groove segment 425 has a third step 428, which represents a drop from the second groove segment 424 towards the first groove segment 423. The connection between the first groove segment 423 and the third groove segment 425 has a fourth step 429. The groove depth (groove depth) of the third groove segment 425 at the corresponding position of the fourth step 429 is less than the groove depth of the first groove segment 423. The end of the elastic clip slides sequentially along the first groove segment 423, the second groove segment 424, and the third groove segment 425. The step design ensures that the end of the elastic clip slides along the limiting groove 420. Each time the telescopic shaft is pulled up and down axially, the elastic clip slides along each groove segment.

[0057] Furthermore, a second elastic element 430 is provided between the telescopic rod 412 and the outer casing 411. The second elastic element 430 can be a spring or a sheet, but is not limited to these. The second elastic element 430 exerts a second elastic force on the telescopic rod 412. The direction of the second elastic force is consistent with the direction in which the telescopic rod 412 moves from the first position to the second position. When the end of the elastic clip is engaged with the first limiting position 421 or the second limiting position 422, under the push of the second elastic force, the end of the elastic clip is locked onto the first limiting position 421 or the second limiting position 422.

[0058] The end of the telescopic rod 412 furthest from the water-sealing assembly 200 can extend outside the housing 411, allowing direct operation of the telescopic rod 412. Alternatively, refer to... Figure 2 and Figure 6 The drive assembly 400 also includes a pressing member 440. The pressing member 440 may be rod-shaped. One end of the pressing member 440 extends into the housing 411, and the pressing member 440 can slide axially relative to the housing 411. When the pressing member 440 is pushed into the housing 411, it abuts against the telescopic rod 412 and pushes the telescopic rod 412 towards the first position. A third elastic member 450 is installed between the pressing member 440 and the housing 411. The third elastic member 450 may be a spring or a sheet, but is not limited to these. The third elastic member 450 exerts a third elastic force on the pressing member 440, and the third elastic force is in the same direction as the telescopic rod 412 moving from the first position to the second position. Each time the pressing member 440 presses against the telescopic rod 412, the telescopic rod 412 will switch from the first position to the second position, or from the second position to the first position. The third elastic force pushes the pressing member 440 to automatically reset.

[0059] Reference Figure 14 and Figure 15The pressing member 440 is used in conjunction with the connecting seat 500. The connecting seat 500 defines a water passage cavity 510. One end of the water passage cavity 510 defines a water inlet 511, and the other end connects to the main body 100 and communicates with the water inlet 111. One end of the pressing member 440 extends into the water passage cavity 510. A filter disc 441 is provided on the end of the pressing member 440 away from the telescopic rod 412. The shape of the filter disc 441 matches the cross-sectional shape of the water inlet 511. The filter disc 441 has several filter holes. Under the action of a third elastic force, the pressing member 440 extends towards the water inlet 511 to the outside of the housing 411 and is held at its maximum extension stroke. At this time, the filter disc 441 is flush with the water inlet 511, and the filter disc 441 intercepts the water inlet 511. The pressure overflow drain device can be connected to the container via the connecting seat 500. Water in the container first flows through inlet 511 and through water chamber 510 before entering inlet chamber 110. When water flows from inlet 511 into through water chamber 510, it passes through filter disc 441. The water is filtered through filter disc 441, and impurities remain on it, preventing them from entering the pressure overflow drain device and causing blockages. The position of filter disc 441 allows users to easily clean the filtered impurities, and users can also operate the pressure overflow drain device by pressing on filter disc 441.

[0060] This application also relates to a washbasin, as shown in the reference. Figure 16 and Figure 17 The washbasin includes a basin 600 and a pressure overflow drain device. The basin 600 is one specific embodiment of the aforementioned container. The pressure overflow drain device is installed at the drain outlet of the basin 600. The pressure overflow drain device enables automatic overflow for the basin 600, which does not have its own overflow structure.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pressure overflow drainage device, characterized in that, include: The main body (100) defines an inlet chamber (110) and an overflow chamber (120) that are interconnected. The inlet chamber (110) has an inlet end (111) and the overflow chamber (120) has an outlet end (121). A water sealing assembly (200) is movably installed in the overflow chamber (120). The water pressure formed by the connection between the overflow chamber (120) and the inlet chamber (110) exerts a thrust on the water sealing assembly (200), and the thrust increases with the increase of the water pressure. The first elastic element (300) has a first elastic force on the water sealing assembly (200) that is opposite to the direction of the thrust; The first elastic force pushes the water sealing component (200) to block the water outlet (121), and the thrust pushes the water sealing component (200) to move away from the water outlet (121). As the thrust increases, the water sealing component (200) gradually moves away from the water outlet (121).

2. The pressure overflow drainage device according to claim 1, characterized in that: The water sealing assembly (200) includes a plug (210) and a movable plug (220). The movable plug (220) slides against the inner wall of the overflow chamber (120) and dynamically divides the overflow chamber (120) into a pressure chamber (122) and a water-blocking chamber (123). The inlet chamber (110) is connected to the pressure chamber (122). The outlet end (121) is opened in the pressure chamber (122). The plug (210) is located in the pressure chamber (122) and can block the outlet end (121).

3. The pressure overflow drainage device according to claim 2, characterized in that: The first elastic element (300) is installed in the water-proof cavity (123).

4. The pressure overflow drainage device according to claim 2, characterized in that: The water sealing assembly (200) also includes a pressure plate (230) and a movable seat (240). One end of the movable seat (240) is provided with a pressure ring (241). The pressure plate (230) is mounted on the movable seat (240). A clamping space is formed between the pressure plate (230) and the pressure ring (241). The movable plug (220) is disc-shaped and clamped in the clamping space. The circumferential direction of the movable plug (220) protrudes radially from the clamping space and abuts against the inner wall of the overflow chamber (120). The plug (210) is provided on the end of the movable seat (240) away from the pressure ring (241).

5. The pressure overflow drainage device according to claim 2, characterized in that: The water outlet (121) is configured as a tapered constriction that gradually narrows from the overflow cavity (120) toward the outside of the main body (100). The plug (210) is cylindrical and is on the same axis as the water outlet (121). The outer diameter of the plug (210) is larger than the minimum inner diameter of the water outlet (121). A sealing ring (211) is fitted on the circumferential outer wall of the plug (210), and the sealing ring (211) can abut against the inner wall of the water outlet (121).

6. The pressure overflow drainage device according to claim 1, characterized in that: It also includes a drive assembly (400) that is slidably connected to the sealing assembly (200). The drive assembly (400) is capable of moving relative to the main body (100) to a first position and a second position. When in the first position, the sealing assembly (200) is capable of moving in the overflow chamber (120) due to the change in the thrust. When in the second position, the drive assembly (400) controls the sealing assembly (200) to remain in a position away from the outlet end (121).

7. The pressure overflow drainage device according to claim 6, characterized in that: The drive assembly (400) includes a spring-loaded mechanism (410), which includes a housing (411), a telescopic rod (412), and a positioning member (413). The housing (411) is fixedly installed relative to the main body (100). The telescopic rod (412) is slidably installed in the housing (411) and switches between a first position and a second position. One end of the telescopic rod (412) is slidably connected to the water-sealing assembly (200). The positioning member (413) is used to hold the telescopic rod (412) in the first position or the second position.

8. The pressure overflow drainage device according to claim 7, characterized in that: The telescopic rod (412) is provided with a limiting groove (420), the limiting groove (420) has a first limiting position (421) and a second limiting position (422), the positioning member (413) is an elastic clip, one end of the elastic clip is slidably connected in the limiting groove (420), and the other end of the elastic clip is connected to the outer shell (411). When the telescopic rod (412) is in the first position, one end of the elastic clip is engaged with the first limiting position (421); When the telescopic rod (412) is in the second position, one end of the elastic clip is engaged with the second limiting position (422).

9. The pressure overflow drainage device according to claim 8, characterized in that: A second elastic element (430) is provided between the telescopic rod (412) and the outer shell (411). The second elastic element (430) exerts a second elastic force on the telescopic rod (412). The direction of the second elastic force is consistent with the direction in which the telescopic rod (412) moves from the first position to the second position.

10. The pressure overflow drainage device according to any one of claims 7 to 9, characterized in that: The drive assembly (400) further includes a pressing member (440) which is slidably mounted on the housing (411). The pressing member (440) can abut against the telescopic rod (412) and push the telescopic rod (412) toward the first position. A third elastic member (450) is installed between the pressing member (440) and the housing (411). The third elastic member (450) exerts a third elastic force on the pressing member (440). The third elastic force is consistent with the direction in which the telescopic rod (412) moves from the first position to the second position.

11. The pressure overflow drainage device according to claim 10, characterized in that: It also includes a connecting seat (500), the interior of which defines a water passage cavity (510), one end of which defines a water inlet (511), the other end of which is connected to the main body (100) and communicates with the water inlet cavity (110), the pressing member (440) extends into the water passage cavity (510), and a filter disc (441) is provided on the end of the pressing member (440) away from the telescopic rod (412); under the action of the third elastic force, the pressing member (440) extends to the maximum extension stroke outside the outer shell (411), and the filter disc (441) is flush with and intercepts the water inlet (511).

12. A washbasin, characterized in that: The device includes a washbasin (600) and a pressure overflow drain device as described in any one of claims 1 to 11, wherein the pressure overflow drain device is installed at the drain outlet of the washbasin (600).

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