A locking assembly for a toilet lid
By designing a locking assembly for the toilet seat and utilizing the structural design of expansion parts and nuts, the toilet seat and toilet can be quickly disassembled and assembled, solving the problems of cumbersome disassembly and assembly and high cost in existing technologies, simplifying the installation steps and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN YIJIA TOILET & BATHROOM TECH CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-30
AI Technical Summary
The existing toilet seat installation and removal process is cumbersome, the manufacturing cost is high, and it requires the use of external tools. The installation steps are complicated and cannot meet the requirements for quick installation and removal.
Design a locking assembly for a toilet seat, including a mounting base, an expansion member, a bolt, and a nut. The expansion member's annular first piece and the nut's second piece engage, allowing for tool-free quick assembly and disassembly by rotating the bolt. Combined with a knob to drive the bolt's rotation, the installation process is simplified.
It enables quick assembly and disassembly of the toilet seat and toilet, reduces manufacturing costs, simplifies the installation process, and reduces reliance on external tools.
Smart Images

Figure CN224420899U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of toilet seat assembly and disassembly components, and in particular to a locking component for toilet seats. Background Technology
[0002] To meet the requirements for quick installation and removal of toilet seats, various styles of quick-release hinges have emerged on the market. However, these hinges have the disadvantages of complex structure and high manufacturing cost. In addition, they require external tools during installation, making the installation process cumbersome and time-consuming, and thus cannot meet the usage requirements and need to be improved. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, such as the cumbersome disassembly and assembly process and high manufacturing cost of toilet seats, the purpose of this utility model is to provide a locking component for toilet seats, which reduces manufacturing costs, simplifies installation steps, and meets consumer needs.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A locking assembly for a toilet seat includes a mounting base, an expansion member, a bolt, and a nut;
[0006] The expansion member includes a connecting part and a plurality of first pieces. The connecting part is provided with a through hole. The plurality of first pieces are all located on the same side of the connecting part. One end of the first piece is connected to the connecting part, and the other end of the first piece extends away from the connecting part along the axial direction of the through hole. The spacing between two adjacent first pieces is set.
[0007] The connecting part is fixedly connected to the mounting base, and the bolt passes through the through hole and is screwed into the nut.
[0008] The nut includes at least one second piece, which is located between two adjacent first pieces.
[0009] Furthermore, the horizontal distance between two adjacent first pieces gradually increases in the direction away from the connecting portion.
[0010] Furthermore, several of the first pieces are arranged in a ring array around the central axis of the through hole.
[0011] Furthermore, the nut also includes a body, with the upper surface of the second piece protruding from the upper surface of the body.
[0012] Furthermore, the first piece has an inner inclined surface, which is located away from the connecting part, and the main body has an outer inclined surface. The inner inclined surface and the outer inclined surface cooperate with each other, and the second piece is connected to the outer inclined surface.
[0013] Furthermore, the locking assembly for the toilet seat also includes a knob that drives the bolt to rotate.
[0014] Furthermore, the knob is fixedly connected to the bolt.
[0015] Furthermore, the mounting base is provided with a limiting groove and a through hole communicating with the limiting groove. The cross-section of the limiting groove is polygonal. The connecting part is located in the limiting groove, and the first piece passes through the through hole.
[0016] Furthermore, the bolt is provided with a threaded portion, the length of which is greater than the sum of the height of the first piece and the height of the nut.
[0017] The beneficial effects of this utility model are as follows: by setting up an installation base, an expansion member, a bolt, and a nut, the expansion member includes a connecting part and several first pieces, which are arranged in a ring shape with a distance between adjacent first pieces. The nut includes at least one second piece. During the tightening process of the nut and the bolt, a second piece extends between two adjacent first pieces, and the first pieces generate radial resistance to the nut. The bolt rotates, completing the connection and fastening between the nut and the expansion member, and realizing the quick assembly and disassembly of the external toilet seat and the toilet without external tools. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;
[0020] Figure 3 This is a three-dimensional sectional view of the present invention;
[0021] Figure 4 This is a planar sectional view of the expansion component, bolt, nut, and knob of this utility model.
[0022] The reference numerals in the figures include:
[0023] 1—Mounting base; 11—Limiting groove; 12—Through hole
[0024] 2—Expansion component 21—Connecting part 211—Through hole
[0025] 22—First piece 221—Inner bevel 3—Bolt
[0026] 4—Nut 41—Body 411—Outer Bevel
[0027] 42—Second piece 5—Knob. Detailed Implementation
[0028] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.
[0029] Please see Figures 1 to 4 The present invention provides a locking assembly for a toilet seat, comprising a mounting base 1, an expansion member 2, a bolt 3, and a nut 4.
[0030] The expansion member 2 includes a connecting part 21 and a plurality of first pieces 22. The connecting part 21 is provided with a through hole 211. The plurality of first pieces 22 are all provided on the same side of the connecting part 21. One end of the first piece 22 is connected to the connecting part 21, and the other end of the first piece 22 extends away from the connecting part 21 along the axial direction of the through hole 211. The spacing between two adjacent first pieces 22 is set.
[0031] The connecting part 21 is fixedly connected to the mounting base 1, and the bolt 3 passes through the through hole 211 and is screwed to the nut 4.
[0032] The nut 4 includes at least one second piece 42, which is located between two adjacent first pieces 22.
[0033] Specifically, in this embodiment, the expansion member 2 includes a connecting part 21 and four first pieces 22. The four first pieces 22 are arranged in a ring around the central axis of the through hole 211, with adjacent first pieces 22 spaced apart. One end of the first piece 22 is fixedly connected to the connecting part 21, and the other end of the first piece 22 is in a free state. This structure makes the free end of the first piece 22 elastic in the radial direction. The nut 4 includes four second pieces 42. The usage method is as follows: First, place the mounting base 1 at the mounting hole of the external toilet seat. Then, fix the connecting part 21 of the expansion member 2 to the mounting base 1. One end of the bolt 3 passes through the through hole 111 and the external toilet seat in sequence. The connecting hole is extended out of the connecting hole. The nut 4 is screwed into the other end of the bolt 3. The nut 4 is turned along the axis of the bolt 3 until a second piece 42 of the nut 4 is inserted between two adjacent first pieces 22. The first piece 22 stops the second piece 42 from rotating. The bolt 3 is turned. Under the resistance of the first piece 22, the nut 4 moves along the central axis of the bolt 3. The inner surface of the first piece 22 and the outer surface of the nut 4 come into contact with each other and generate friction. This causes the first piece 22 to swing away from the central axis of the through hole 211, increasing the contact area between the first piece 22 and the nut 4 and increasing the friction until the bolt 3 stops rotating, thus completing the assembly of the external toilet seat and the toilet.
[0034] By setting up a mounting base 1, an expansion member 2, a bolt 3, and a nut 4, the expansion member 2 includes a connecting part 21 and several first pieces 22. The several first pieces 22 are arranged in a ring shape, and the distance between two adjacent first pieces 22 is set. The nut 4 includes at least one second piece 42. During the tightening process of the nut 4 and the bolt 3, one second piece 42 extends into the space between two adjacent first pieces 22. The first pieces 22 generate radial resistance to the nut 4. The bolt 3 rotates, completing the connection and fastening between the nut 4 and the expansion member 2, realizing the quick assembly and disassembly of the external toilet seat and the toilet without external tools.
[0035] The horizontal distance between two adjacent first pieces 22 gradually increases in the direction away from the connecting part 21, that is, the gap between two adjacent first pieces 22 forms a shape that is wider at the bottom and narrower at the top, which facilitates the second piece 42 to enter the gap between two adjacent first pieces 22 and facilitates assembly.
[0036] Several first pieces 22 are arranged in a ring array around the central axis of the through hole 211, that is, the notches formed between two adjacent first pieces 22 are of the same specification, which makes it convenient for any two first pieces 22 to clamp any one of the second pieces 42 of the nut 4, and facilitates assembly.
[0037] The nut 4 also includes a body 41, and the upper surface of the second piece 42 protrudes from the upper surface of the body 41. The second piece 42 extends into the notch between two adjacent first pieces 22 to complete the pre-assembly. Preferably, the second piece 42 is integrally formed with the body 41 to improve the service life and connection firmness of the nut 4.
[0038] The first piece 22 has an inner inclined surface 221, which is located away from the connecting part 21. The body 41 has an outer inclined surface 411. The inner inclined surface 221 and the outer inclined surface 411 cooperate. The second piece 42 is connected to the outer inclined surface 411. The arrangement of the inner inclined surface 221 and the outer inclined surface 411 makes the contact surface between the first piece 22 and the nut 4 increase from small to large. That is, the frictional resistance generated between the first piece 22 and the nut 4 increases from small to large, which makes the connection between the nut 4 and the expansion member 2 more secure.
[0039] The locking assembly for the toilet seat also includes a knob 5, which drives the bolt 3 to rotate. When an external force is applied to the knob 5, rotating the knob 5 causes the bolt 3 to rotate synchronously, which facilitates disassembly and assembly and reduces the use of external tools.
[0040] The knob 5 is fixedly connected to the bolt 3. Preferably, the knob 5 and the bolt 3 are integrally molded plastic parts.
[0041] The mounting base 1 is provided with a limiting groove 11 and a through hole 12 communicating with the limiting groove 11. The cross-section of the limiting groove 11 is polygonal, and the through hole 12 is circular. The connecting part 21 is provided in the limiting groove 11, and the first piece 22 passes through the through hole 12. Preferably, the limiting groove 11 is cuboid, and the connecting part 21 is cuboid, so that the connecting part 21 is fixed relative to the mounting base 1, that is, the first piece 22 is fixed relative to the mounting base 1.
[0042] The bolt 3 has a threaded portion, the length of which is greater than the sum of the height of the first piece 22 and the height of the nut 4. This structure ensures that the nut 4 remains connected to the bolt 3 even after being detached from the first piece 22, facilitating fixation and preventing loss. The above description is merely a preferred embodiment of this utility model. For those skilled in the art, modifications may be made to the specific implementation and application scope based on the concept of this utility model. Therefore, this specification should not be construed as a limitation of this utility model.
Claims
1. A locking assembly for a toilet lid, characterized by: Includes mounting base (1), expansion component (2), bolt (3) and nut (4); The expansion member (2) includes a connecting part (21) and a plurality of first pieces (22). The connecting part (21) is provided with a through hole (211). The plurality of first pieces (22) are all located on the same side of the connecting part (21). One end of the first piece (22) is connected to the connecting part (21), and the other end of the first piece (22) extends away from the connecting part (21) along the axial direction of the through hole (211). The spacing between two adjacent first pieces (22) is set. The connecting part (21) is fixedly connected to the mounting base (1), and the bolt (3) passes through the through hole (211) and is screwed to the nut (4); The nut (4) includes at least one second piece (42) located between two adjacent first pieces (22).
2. The locking assembly for a toilet lid according to claim 1, wherein: The horizontal distance between two adjacent first pieces (22) gradually increases in the direction away from the connecting part (21).
3. The locking assembly for a toilet lid of claim 1, wherein: Several of the first plates (22) are arranged in a ring array around the central axis of the through hole (211).
4. The locking assembly for a toilet lid of claim 1, wherein: The nut (4) also includes a body (41), the upper surface of the second piece (42) protruding from the upper surface of the body (41).
5. The locking assembly for a toilet seat according to claim 4, characterized in that: The first piece (22) has an inner inclined surface (221) which is located away from the connecting part (21). The main body (41) has an outer inclined surface (411) which cooperates with the inner inclined surface (221) and the outer inclined surface (411). The second piece (42) is connected to the outer inclined surface (411).
6. The locking assembly for a toilet seat according to claim 1, characterized in that: The locking assembly for the toilet seat also includes a knob (5) that drives the bolt (3) to rotate.
7. The locking assembly for a toilet seat according to claim 6, characterized in that: The knob (5) is fixedly connected to the bolt (3).
8. The locking assembly for a toilet seat according to claim 1, characterized in that: The mounting base (1) is provided with a limiting groove (11) and a through hole (12) communicating with the limiting groove (11). The cross-section of the limiting groove (11) is polygonal. The connecting part (21) is located in the limiting groove (11). The first piece (22) passes through the through hole (12).
9. The locking assembly for a toilet seat according to claim 1, characterized in that: The bolt (3) has a threaded portion, the length of which is greater than the sum of the height of the first piece (22) and the height of the nut (4).