Automatic toilet seat cushion
Through a purely mechanical gear transmission and linkage mechanism, the automatic toilet seat is activated by sitting and foot pedals, solving the hygiene and usability issues of traditional toilet seats, improving ease of use and reducing the risk of malfunction.
Patent Information
- Application Number
- CN202511830718.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-06
- Publication Date
- 2026-01-27
AI Technical Summary
Traditional toilet seats require manual operation and have poor hygiene. Existing automatic toilet seats have complex structures and high costs, making it difficult to meet the needs of different genders and usage habits.
It adopts a purely mechanical structure, triggering the opening and closing of the toilet seat through sitting pressure and foot pedal. It uses gear transmission and linkage mechanism to achieve automatic opening and closing, avoiding hand contact.
It improves hygiene and convenience, reduces the probability of failure and production costs, adapts to the usage habits of different genders, and has a simple and practical structure.
Smart Images

Figure CN121400722A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bathroom equipment technology, and in particular to an automatic toilet seat. Background Technology
[0002] Traditional toilet seats typically require manual operation to open and close, making users' hands susceptible to bacteria and resulting in poor hygiene. Existing automatic toilet seats mostly use electronic controls, which are complex in structure, expensive, and prone to malfunctions due to circuit failures. Furthermore, some automatic toilet seats have only one triggering method, failing to simultaneously meet the needs of people of different genders and with different usage habits. While center-sliding toilet seats are a common type, there is currently a lack of a purely mechanical solution that can be triggered in multiple ways, failing to balance convenience, hygiene, and structural reliability.
[0003] Based on this situation, an automatic toilet seat is provided, including a seat body, a toilet lid, a seat-press opening mechanism, and a foot-operated opening mechanism. The seat-press opening mechanism uses a rack and pinion mechanism to drive a bearing to rotate, causing a tension spring to pull a roller close to the bearing, opening the toilet lid to both sides. The foot-operated opening mechanism uses a connecting rod and a tension spring to transmit foot pressure to the top of the seat body, which in turn drives the rack and the gear set to rotate, opening the toilet lid to both sides. After standing up or releasing the pedal, the tension spring returns to its original position, causing the gear transmission mechanism to rotate in the opposite direction, closing the toilet lid. The automatic toilet seat has two triggering methods to suit the usage habits of different genders, eliminating the need for manual contact, improving hygiene and convenience, and featuring a simple and practical structure suitable for home and public bathroom scenarios. Summary of the Invention
[0004] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:
[0005] An automatic toilet seat according to an embodiment of the present invention includes:
[0006] The seat cushion body serves as the structural basis for the automatic toilet seat. The bottom inner wall of the seat cushion body has a wheel mounting groove and a rack hole. The upper and lower halves of the seat cushion body are connected by a spring. A buffer block is provided on the bottom inner wall of the seat cushion body to prevent pressure from hindering the opening of the lid. Symmetrical fixing plates are provided on the bottom sidewall of the seat cushion body, and these fixing plates are fixedly connected to the toilet by bolts. Hooks are also provided on the bottom sidewall of the seat cushion body for hanging garbage bags.
[0007] The toilet seat is located in the middle of the seat body. The toilet seat is divided into two halves, and the inner ends of each half are respectively fixedly connected to the roller and bearing surface of the seat opening structure.
[0008] The automatic toilet seat features a pressure-opening lid structure located inside the seat body near the point of contact with the toilet bowl. It includes a gear transmission structure and a slide rail. The gear transmission structure is symmetrically arranged in the transverse direction of the automatic toilet seat, and the slide rail is symmetrically arranged in the longitudinal direction. The gear transmission structure includes a bearing, a gear set, and a rack. The gear set includes gear one, gear two, and gear three. Gear one meshes with gear two, gear two meshes with gear three, and gear three meshes with the rack. The gear set is bolted to a gear mounting bracket, which is mounted to the wheel frame mounting groove of the seat body using a tenon and mortise structure. The bearing passes through the slide rail and is welded to gear one. The top end of the rack is fixedly connected to the inner top wall of the seat body, and the bottom end passes through the rack hole in the seat body. A scroll is threaded through the middle of the slide rail, and both ends of the scroll are connected to the two ends of the bearing via tension springs. The tension springs are rotatably connected to the bearing and the scroll.
[0009] The foot-operated opening structure includes a pedal, a connecting rod, and a second tension spring. One end of the connecting rod is welded to the pedal, and the other end is rotatably connected to one end of the second tension spring via a pivot. The other end of the second tension spring is rotatably connected to the upper half of the side wall of the seat cushion body.
[0010] The tension spring resets after the person gets up or the pedal is released, driving the gear transmission structure to rotate in the opposite direction, thus closing the toilet seat.
[0011] All gears in the gear set are spur gears.
[0012] The surface of the seat cushion body is provided with anti-slip texture.
[0013] The advantages of this invention compared to existing technologies are as follows: This invention provides an automatic toilet seat that uses a purely mechanical structure to achieve automatic opening and closing of the toilet seat, eliminating the need for electronic control components, thus reducing the probability of failure and production costs, and facilitating maintenance; it features two triggering methods, seat pressure and foot pedal, respectively adapting to the sitting posture of women and the standing posture of men, improving ease of use; the entire process does not require hand contact with the toilet seat, reducing the risk of bacterial transmission and improving hygiene; the structure is compact and reasonable, with automatic reset achieved through a spring, ensuring smooth operation and a superior user experience. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the automatic toilet seat according to an embodiment of the present invention when the toilet lid is closed;
[0015] Figure 2 This is a schematic diagram of the overall structure of the automatic toilet seat according to an embodiment of the present invention when the toilet lid is opened;
[0016] Figure 3 This is a rear perspective view of an automatic toilet seat according to an embodiment of the present invention;
[0017] Figure 4 This is a partially enlarged rear view of an automatic toilet seat according to an embodiment of the present invention;
[0018] Figure 5 This is a partial enlarged side view of an automatic toilet seat according to an embodiment of the present invention.
[0019] Figure label:
[0020] Automatic toilet seat cover 100;
[0021] Seat cushion body 10; wheel frame mounting groove 11; rack hole 12; spring 13; buffer block 14; fixing plate 15; hook 16;
[0022] Toilet seat 20;
[0023] 30. Seat-press opening structure; 31. Gear transmission structure; 31-a. Bearing; 31-b. Gear set; 31-b1. Gear 2; 31-b2. Gear 3; 31-b3. Rack; 31-c. Slide rail; 32. Roller shaft; 33. Gear mounting bracket; 34. Tension spring 1; 35.
[0024] Foot-operated cover opening mechanism 40; pedal 41; connecting rod 42; tension spring 2 43. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Example: The automatic toilet seat 100 according to an embodiment of the present invention, such as... Figures 1 to 5 As shown, specifically, it includes a seat body 10, a toilet seat 20, a seat-press opening structure 30, and a foot-operated opening structure 40.
[0027] The seat cushion body 10 is an arc-shaped support, serving as the structural basis of the automatic toilet seat cushion 100. It is made of waterproof and antibacterial plastic through integrated injection molding, and the surface has an anti-slip texture. The bottom inner wall of the seat cushion body 10 has a wheel frame mounting groove 11 and a rack hole 12. The upper and lower halves of the seat cushion body 10 are connected by a spring 13. The bottom inner wall of the seat cushion body 10 has a buffer block 14 to prevent pressure from hindering the opening of the lid. The bottom side wall of the seat cushion body 10 has symmetrical fixing pieces 15, which are fixedly connected to the toilet by bolts. The bottom side wall of the seat cushion body 10 also has a hook 16 for hanging garbage bags.
[0028] Specifically, the curvature of the seat cushion body 10 is adapted to the curve of the human buttocks to ensure comfort when sitting; the seat cushion body 10 is made of hard plastic, such as ABS resin, PP (polypropylene), PS (polystyrene), PC (polycarbonate), etc., which is rigid, has a small deformation coefficient, and is not easy to crack after long-term use. When sitting, it will not cause pressure dispersion due to excessive bending, and can directly transfer the weight of the human body to the seat pressure opening structure 30 below.
[0029] The toilet seat 20 is located in the middle of the seat body 10. The toilet seat 20 is divided into two halves, and the inner ends of each half are respectively fixedly connected to the roller 33 and bearing 32 of the seat opening structure 30.
[0030] The seat opening structure 30 is located inside the seat body 10 near the point of contact with the toilet bowl, and includes a gear transmission structure 31 and a slide rail 32. The gear transmission structure 31 is symmetrically arranged in the transverse direction of the automatic toilet seat 100, and the slide rail 32 is symmetrically arranged in the longitudinal direction of the automatic toilet seat 100. The gear transmission structure 31 includes a bearing 31-a, a gear set 31-b, and a rack 31-c. The gear set 31-b includes a first gear 31-b1, a second gear 31-b2, and a third gear 31-b3. The first gear 31-b1 meshes with the second gear 31-b2, the second gear 31-b2 meshes with the third gear 31-b3, and the third gear 31-b3 meshes with the rack 31-c. The gear set 31-b is fixed to the gear mounting bracket 34 by bolts, and the gear mounting bracket 34 is fixed to the gear mounting bracket 34 by tenons. The mortise structure is installed on the wheel frame mounting groove 11 of the seat cushion body 10; the bearing 31-a passes through the slide rail 32 and is welded to the gear 31-b1; the top end of the rack 31-c is fixedly connected to the top inner wall of the seat cushion body 100, and the bottom end passes through the rack hole 12 of the seat cushion body 100; a roller 33 is provided through the middle of the slide rail 32, and the two ends of the roller 33 are respectively connected to the two ends of the bearing 31-a through a tension spring 35. The tension spring 35 is rotatably connected to the bearing 31-a and the roller 33; when sitting, the pressure drives the rack 31-c to descend, driving the gear set 31-b to drive the transmission, the bearing 31-a follows the gear set 31-b to rotate, pulling the tension spring 35 to drive the roller 33 to move closer to the bearing 31-a, and the toilet seat 20 rolls up and opens to both sides.
[0031] Specifically, each gear in the gear set 31-b is a spur gear.
[0032] The foot-operated opening structure 40 includes a pedal 41, a connecting rod 42, and a second tension spring 43. One end of the connecting rod 42 is welded to the pedal 41, and the other end is rotatably connected to one end of the second tension spring 43 via a pivot. The other end of the second tension spring 43 is rotatably connected to the upper half of the side wall of the seat cushion body 10. The foot pressure is transmitted to the top of the seat cushion body 10 via the connecting rod 42, and the toilet seat 20 is driven to roll up and open to both sides using the same principle as the seat pressure opening structure 30.
[0033] The tension spring 35 resets after standing up or releasing the pedal 41, driving the gear transmission structure 31 to rotate in the opposite direction, thereby closing the toilet seat 20.
[0034] When used by a woman: The user sits on the seat cushion body 10. The pressure generated by her body weight causes the upper part of the seat cushion body 10 to press down, which moves the rack 31-c downward. Through the gear set 31-b, the bearing 31-a is driven to rotate. The tension spring 35 drives the roller 33 to move closer to the bearing 31-a, causing the toilet seat 20 to roll up. After use, the user stands up, the pressure disappears, the tension spring 35 returns to its original position under its own elasticity, the toilet seat 20 unfolds and closes in the middle, which drives the bearing 31-a to rotate. Through the gear set 31-b, the rack 31-c is driven to rise, and the seat cushion body 10 returns to its original position.
[0035] When used by a male: The user steps on the pedal 41, which connects to the connecting rod 42 and drives the tension spring 43 to pull the upper part of the seat body 10 downward. The pressure causes the rack 31-c to move downward. The subsequent transmission process is the same as the seat opening structure 30, which ultimately causes the toilet seat 20 to roll up to both sides. After use, the user releases the pedal 41. Under the restoring force of the tension spring 35, the toilet seat 20 unfolds and closes in the middle, causing the bearing 31-a to rotate. Through the gear set 31-b, the rack 31-c is driven to rise, and the seat body 10 returns to its original position.
[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.
Claims
1. An automatic toilet seat cushion, characterized in that, include: The seat cushion body serves as the structural basis for the automatic toilet seat. The bottom inner wall of the seat cushion body has a wheel mounting groove and a rack hole. The upper and lower halves of the seat cushion body are connected by a spring. A buffer block is provided on the bottom inner wall of the seat cushion body to prevent pressure from hindering the opening of the lid. Symmetrical fixing plates are provided on the bottom sidewall of the seat cushion body, and these fixing plates are fixedly connected to the toilet by bolts. Hooks are also provided on the bottom sidewall of the seat cushion body for hanging garbage bags. The toilet seat is located in the middle of the seat body. The toilet seat is divided into two halves, and the inner ends of each half are respectively fixedly connected to the roller and bearing surface of the seat opening structure. The automatic toilet seat features a pressure-opening lid structure located inside the seat body near the point of contact with the toilet bowl. It includes a gear transmission structure and a slide rail. The gear transmission structure is symmetrically arranged in the transverse direction of the automatic toilet seat, and the slide rail is symmetrically arranged in the longitudinal direction. The gear transmission structure includes a bearing, a gear set, and a rack. The gear set includes gear one, gear two, and gear three. Gear one meshes with gear two, gear two meshes with gear three, and gear three meshes with the rack. The gear set is bolted to a gear mounting bracket, which is mounted to the wheel frame mounting groove of the seat body using a tenon and mortise structure. The bearing passes through the slide rail and is welded to gear one. The top end of the rack is fixedly connected to the inner top wall of the seat body, and the bottom end passes through the rack hole in the seat body. A scroll is threaded through the middle of the slide rail, and both ends of the scroll are connected to the two ends of the bearing via tension springs. The tension springs are rotatably connected to the bearing and the scroll. The foot-operated opening structure includes a pedal, a connecting rod, and a second tension spring. One end of the connecting rod is welded to the pedal, and the other end is rotatably connected to one end of the second tension spring via a pivot. The other end of the second tension spring is rotatably connected to the upper half of the side wall of the seat cushion body.
2. The automatic toilet seat according to claim 1, characterized in that, The tension spring resets after the person gets up or the pedal is released, driving the gear transmission structure to rotate in the opposite direction, thus closing the toilet seat.
3. The automatic toilet seat according to claim 1, characterized in that, All gears in the gear set are spur gears.
4. The automatic toilet seat according to claim 1, characterized in that, The surface of the seat cushion body is provided with anti-slip texture.
