Bathtub drainage protection structure
The transmission system and buffer mechanism that link the button and brake cable solve the problems of clogging in the bathtub drainage system and easy damage to the transmission system, improving the user experience and the durability of the device.
Patent Information
- Application Number
- CN202520485743.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Existing bathtub drainage systems are prone to clogging, transmission systems are easily damaged, and the user experience is poor. Furthermore, existing protective structures are complex or their protective effects are not ideal.
The transmission system uses a button and brake cable linkage, combined with a buffer mechanism and elastic element design. The horizontal pressing force is converted into vertical force through a beveled connector to open and close the drain plug, and the buffer mechanism protects the transmission system from external damage.
It reduces the pressing force, improves the user experience, enhances the stability and durability of the transmission system, extends the service life of the device, and reduces maintenance costs.
Smart Images

Figure CN223922318U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a bathtub drainage protection structure, specifically a protective device for a bathtub drainage system. Background Technology
[0002] In modern homes and hotels, bathtubs are increasingly used as an important sanitary facility. However, existing bathtub drainage systems have some significant problems. Traditional bathtub drainage structures typically use a simple drain hole and drain pipe design, which is prone to problems such as poor drainage and blockages during use. In particular, hair, dirt, and other debris tend to accumulate at the drain outlet, leading to poor drainage. Furthermore, due to the lack of effective protective measures, a sudden, large external force applied to the drain plug can easily damage the transmission system between the button and the drain plug due to the rigid connection, requiring frequent maintenance and replacement, increasing operating costs.
[0003] While existing bathtub drain protection structures have addressed some of the aforementioned issues, they still have shortcomings. For example, some designs are overly complex, difficult to install and maintain, and not easily adopted; others, while simple in structure, offer insufficient protection, failing to effectively prevent debris from entering the drainage system, leading to frequent clogging of the drain outlet. Furthermore, existing bathtub drain protection structures need improvement in terms of aesthetics and user experience, potentially causing inconvenience for users. Summary of the Invention
[0004] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a bathtub drainage protection structure.
[0005] This utility model is achieved through the following technical solution:
[0006] A bathtub drainage protection structure includes a bathtub, a button on the side wall of the bathtub, and a lower body for drainage on the bottom side wall of the bathtub. A drain plug is provided at the drain outlet of the lower body. A transmission system is provided between the button and the drain plug. The button can control the engagement relationship between the drain plug and the drain outlet. The button can be connected to one end of a brake cable, and the other end of the brake cable can be connected to a push rod. The push rod can rotate up and down relative to the lower body with the assistance of the brake cable. The up and down rotation of the push rod can drive the drain plug to rise or fall, thereby opening or closing the drain outlet. One end and / or the other end of the brake cable is connected to a buffer mechanism, which can prevent the transmission system from being damaged due to external force forcibly closing the drain plug.
[0007] In this embodiment of the utility model, the buffer mechanism includes a first connecting member and a second connecting member that cooperate with each other. A spring is provided between the first connecting member and the second connecting member. The first connecting member can be connected to the other end of the brake cable, and the second connecting member can be connected to the push rod.
[0008] In this embodiment of the present invention, the buffer mechanism includes an elastic element, one end of which is connected to the other end of the brake cable, and the other end of which is connected to the push rod.
[0009] In this embodiment of the utility model, an upper body that can cooperate with the button is also included. The upper body is disposed on the side wall of the bathtub and includes a curved connector that is hinged to the upper body in the middle. One end of the curved connector can be connected to the button, and the other end of the curved connector can be connected to the brake line. Pressing the button can drive the curved connector and then control the raising and lowering of the drain plug through the brake line.
[0010] In this embodiment of the utility model, a bouncing core is also fixed in the upper body. A movable guide sleeve is provided on the outer periphery of the bouncing core. One end of the guide sleeve can be connected to a button, and the other end of the guide sleeve can be connected to a beveled connector. The button can move synchronously with the guide sleeve. The button and the guide sleeve can reciprocate relative to the bouncing core to drive the beveled connector to swing.
[0011] In this embodiment of the utility model, a return spring is also included between the bouncing core and the button / guide sleeve. The bouncing core is provided with a heart-shaped track groove and a connecting rod is also included. One end of the connecting rod can move in the track groove, and the other end of the connecting rod can cooperate with the button / guide sleeve.
[0012] In this embodiment of the utility model, the track groove includes a first position and a second position, and pressing the button enables one end of the connecting rod to repeatedly switch between the first position and the second position.
[0013] In this embodiment of the utility model, the push rod includes a first connecting part and a second connecting part. The push rod is rotatably disposed at the lower body. The first connecting part is located inside the lower body and can be connected to the lower end of the drain plug. The second connecting part is located outside the lower body and can be connected to the brake cable. The pulling of the brake cable can drive the first connecting part and the second connecting part to rotate relative to the lower body, thereby driving the drain plug to move up and down.
[0014] In this embodiment of the present invention, a fixing sleeve is provided in the lower body, and the drain plug is disposed inside the fixing sleeve.
[0015] This utility model discloses a bathtub drainage protection structure with the following advantages: The linkage mechanism between the button and the spring core allows users to complete the drainage operation with minimal force, significantly improving the user experience; the design of the right-angle connector and brake cable ensures efficient force transmission and guarantees the stability of the transmission system; the introduction of a buffer mechanism effectively absorbs the impact of sudden external forces, transforming the rigid fit into a flexible fit, protecting the transmission system from damage and extending the device's service life; and the optimized design of the spring core achieves a balance between water pressure and spring force, improving the overall reliability of the device. Attached Figure Description
[0016] To more clearly illustrate the technical solution of this utility model, 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a cross-sectional view of the present invention.
[0018] Figure 2 This is a schematic diagram of the present invention when no drainage is applied. Figure 1 .
[0019] Figure 3 This is a schematic diagram of the present invention when no drainage is applied. Figure 2 .
[0020] Figure 4 This is a schematic diagram of drainage in this utility model. Figure 1 .
[0021] Figure 5 This is a schematic diagram of drainage in this utility model. Figure 2 .
[0022] Figure 6 This is a schematic diagram of the central groove of this utility model. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0024] In the description of this utility model, 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", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 of this utility model.
[0025] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 utility model according to the specific circumstances.
[0027] 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.
[0028] Referring to the accompanying drawings, a push-button bathtub drainage anti-damage structure mainly comprises a button 1, a curved connector 2, a brake cable 3, a push rod 4, a drain plug 5, a spring-loaded core 6, a guide sleeve 7, a return spring 8, a connecting rod 9, a heart-shaped track groove 10, a first connector 11, a second connector 12, a spring 13, a fixing sleeve 14, a lower body 15, and an upper body 16. The working principle and operation of this invention will be explained in detail below, focusing on the interrelationships of these components.
[0029] In practical applications, the user triggers the entire system by pressing button 1. Button 1 is located on the side wall of the bathtub and cooperates with the upper body 16. A spring-loaded core 6 is fixed inside the upper body 16, and a movable guide sleeve 7 is provided around the outer periphery of the spring-loaded core 6. One end of the guide sleeve 7 is in direct contact with button 1, and the other end is connected to one end of the beveled connector 2. The guide sleeve can be directly connected to it, or connected via a rod and the beveled connector, which can be a right-angled member. The angle between the two ends allows for a change in the direction of force. When the user presses button 1, button 1 pushes the guide sleeve 7 to move along the axial direction of the spring-loaded core 6, simultaneously causing one end of the beveled connector 2 to swing. The middle of the beveled connector 2 is hinged to the upper body 16, forming a lever effect, converting the horizontal pressing force into a vertical force, which is then transmitted to the brake line 3 through its other end. This design significantly reduces the user's pressing force, requiring only overcoming the water level pressure and the spring force in the spring mechanism to complete the operation.
[0030] One end of the brake cable 3 is connected to the other end of the bent connector 2, and the other end is connected to the push rod 4. The push rod 4 is located in the lower body 15 and can rotate up and down around its axis of rotation. The push rod 4 is divided into a first connecting part 41 and a second connecting part 42. The first connecting part is located inside the lower body 15 and is connected to the lower end of the drain plug 5; the second connecting part is located outside the lower body 15 and is connected to the other end of the brake cable 3. When the brake cable 3 is under tension, the first and second connecting parts of the push rod 4 rotate relative to the lower body 15, thereby driving the drain plug 5 to rise or fall, realizing the opening or closing of the drain outlet. When the brake cable is pulled, it drives the first connecting part to flip upward, lifting the drain plug, so that the entire bathtub 100 drains water. A fixing sleeve 14 is also provided inside the lower body 15. The drain plug 5 is installed in the fixing sleeve 14 to ensure that it remains stable during movement and to avoid displacement or jamming.
[0031] To further optimize the user experience, this invention features a heart-shaped groove 10 on the bouncing core 6, and a linkage 9 connects the button 1 and the bouncing core 6. One end of the linkage 9 is embedded in the heart-shaped groove 10, and the other end engages with the button 1 or the guide sleeve 7, allowing the linkage to rotate relative to each other. When the user presses the button 1, the guide sleeve 7 pushes the linkage 9 along the heart-shaped groove 10, switching one end of the linkage 9 from a first position 101 to a second position 102. These two positions are corner positions, thereby controlling the state of the drain plug 5. The first position corresponds to the closed state of the drain plug 5, and the second position corresponds to the open state of the drain plug 5. Through the design of the heart-shaped groove 10, the linkage 9 can repeatedly switch between the two positions, ensuring accurate and reliable opening and closing of the drain plug 5. Furthermore, a return spring 8 is provided between the bouncing core 6 and the button 1 or the guide sleeve 7, ensuring that the linkage can move circumferentially within the heart-shaped groove.
[0032] One of the core innovations of this invention is the addition of a buffer mechanism to protect the transmission system from external damage. The buffer mechanism includes a first connecting member 11 and a second connecting member 12, with a spring 13 positioned between them. The first connecting member 11 is connected to the other end of the brake cable 3, and the second connecting member 12 is connected to the second connecting part of the push rod 4. When the drain plug 5 is open, if it is forcibly closed by external force, the spring 13 in the buffer mechanism will compress, absorbing the external force and protecting the parts in the transmission system from damage, transforming the original rigid connection into a flexible connection. The position of the buffer mechanism can be flexibly arranged according to actual needs, and can be placed at the front, middle, or end of the transmission system to meet the requirements of different usage scenarios. For example, in some applications requiring higher protection performance, the buffer mechanism can be placed at both ends of the brake cable 3 to provide double protection, and the buffer mechanism can form a structure similar to a piston cylinder.
[0033] In another embodiment of the buffer mechanism of this utility model, the buffer mechanism includes an elastic element. In one embodiment, it can be U-shaped. One end of the elastic element is connected to the other end of the brake cable, and the other end of the elastic element is connected to the top rod. This embodiment is not shown in the figure, but it is similar to the above embodiment. It mainly serves to buffer the sudden force to protect the transmission system. The transmission system mentioned here may include a button, a spring core, a connecting rod, a bend connector, etc., mainly protecting the front end of the brake cable.
[0034] In actual use, when the user presses button 1, the pressure is transmitted to the brake cable 3 via the beveled connector 2. The brake cable 3 pulls the push rod 4 to rotate, causing the drain plug 5 to rise, opening the drain outlet and initiating drainage. When the user presses button 1 again, the connecting rod 9 switches from the second position back to the first position along the heart-shaped track groove 10, the push rod 4 rotates in the opposite direction, the drain plug 5 descends, the drain outlet closes, and drainage stops. Throughout the entire process, the buffer mechanism remains operational, ready to absorb any potential external impacts and protect the components in the transmission system from damage.
[0035] This utility model achieves significant technical benefits through several innovations. First, the curved connector 2 converts horizontal pressing force into vertical force. During pressing, only the water level pressure and the spring force in the bouncing mechanism need to be overcome, without overcoming other mechanical forces, minimizing the pressing force to less than 60N and significantly improving the user experience. Second, by adding an elastic buffer mechanism to the transmission system, the problem of damage to the transmission system due to external forces is avoided, improving the durability and safety of the structure and reducing maintenance costs. Finally, through reasonable mechanical design, smooth pressing operation is ensured while protecting internal parts from damage, extending the product's service life.
[0036] In summary, this utility model effectively solves the problems of excessive pressing force and easy damage to the transmission system in the prior art by optimizing the pressing structure and adding a buffer protection mechanism, demonstrating significant technological progress and practicality. All components in this embodiment are manufactured using common materials and mature processes, facilitating large-scale production and promotion, and are suitable for various types of bathtub drainage systems.
[0037] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A bathtub drainage protection structure, comprising a bathtub, a button provided on the side wall of the bathtub, a lower body for drainage provided on the bottom side wall of the bathtub, a drain plug provided at the drain outlet of the lower body, a transmission system provided between the button and the drain plug, the button being capable of controlling the engagement relationship between the drain plug and the drain outlet, characterized in that, The button can be connected to one end of the brake cable, and the other end of the brake cable can be connected to the push rod. The push rod can rotate up and down relative to the lower body with the help of the brake cable. The up and down rotation of the push rod can drive the drain plug to rise or fall, so as to open or close the drain outlet. One end and / or the other end of the brake cable is connected to a buffer mechanism, which can prevent the transmission system from being damaged due to the drain plug being forcibly closed by external force.
2. The bathtub drainage protection structure according to claim 1, characterized in that, The buffer mechanism includes a first connector and a second connector that cooperate with each other. A spring is provided between the first connector and the second connector. The first connector can be connected to the other end of the brake cable, and the second connector can be connected to the push rod.
3. The bathtub drainage protection structure according to claim 2, characterized in that, The buffer mechanism includes an elastic element, one end of which is connected to the other end of the brake cable, and the other end of which is connected to the push rod.
4. A bathtub drainage protection structure according to any one of claims 1-3, characterized in that, It also includes an upper body that can cooperate with the button, the upper body being set on the side wall of the bathtub, and a curved connector hinged to the upper body in the middle, one end of the curved connector being able to cooperate with the button, and the other end of the curved connector being able to be connected to the brake cable, the pressing of the button being able to drive the curved connector and then control the raising and lowering of the drain plug via the brake cable.
5. A bathtub drainage protection structure according to claim 4, characterized in that, The upper body also has a bouncing core fixed inside. A movable guide sleeve is provided on the outer periphery of the bouncing core. One end of the guide sleeve can be connected to a button, and the other end of the guide sleeve can be connected to a beveled connector. The button can move synchronously with the guide sleeve. The button and the guide sleeve can reciprocate relative to the bouncing core to drive the beveled connector to swing.
6. A bathtub drainage protection structure according to claim 5, characterized in that, It also includes a return spring located between the bouncing core and the button / guide sleeve. The bouncing core is provided with a heart-shaped track groove. It also includes a connecting rod. One end of the connecting rod can move in the track groove, and the other end of the connecting rod can cooperate with the button / guide sleeve.
7. A bathtub drainage protection structure according to claim 6, characterized in that, The track groove includes a first position and a second position. Pressing the button enables one end of the linkage to repeatedly switch between the first position and the second position.
8. A bathtub drainage protection structure according to any one of claims 1-3 and 5-7, characterized in that, The push rod includes a first connecting part and a second connecting part. The push rod is rotatably disposed at the lower body. The first connecting part is located inside the lower body and can be connected to the lower end of the drain plug. The second connecting part is located outside the lower body and can be connected to the brake cable. The pulling of the brake cable can drive the first connecting part and the second connecting part to rotate relative to the lower body, thereby driving the drain plug to move up and down.
9. A bathtub drainage protection structure according to claim 8, characterized in that, A fixing sleeve is provided inside the lower body, and the drain plug is located inside the fixing sleeve.