Folding seat structure

Abstract

The utility model discloses a folding seat structure which comprises a supporting seat and a seat plate hinged with the supporting seat, the seat plate is provided with a first hinge part, and the supporting seat is provided with a second hinge part hinged with the first hinge part; the device further comprises a fixing sleeve and a torsional spring, the torsional spring is installed in the fixing sleeve, one end of the torsional spring is connected with the first hinge part, and the other end of the torsional spring is connected with the second hinge part. The fixing sleeve is mounted on the first hinge part and is rotatably connected with the second hinge part; the torsion spring is installed in the fixing sleeve, and the two ends of the torsion spring are connected with the first hinge part and the second hinge part respectively, so that the torsion spring is effectively protected, the influence of external factors such as abrasion and corrosion on the torsion spring is reduced, and the service life of the torsion spring is prolonged; a stable working environment is provided for the torsion spring through the arrangement of the fixing sleeve, deformation or damage possibly occurring in the repeated folding process of the torsion spring is reduced, and the stability and reliability of the folding action of the seat are ensured.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a folding seat structure. Background Technology

[0002] In large public facilities such as stadiums, theaters, and conference centers, foldable seating systems are often used to meet the needs of different activities. These systems allow the seats to be folded up when not in use, saving space and increasing the venue's versatility. However, in existing foldable seating systems, the torsion spring, as a key component enabling the seat folding action, directly affects the seat's reliability and durability through its performance and lifespan.

[0003] Torsion spring failure is a common problem in folding seat systems. The causes of torsion spring failure are varied, including material fatigue, improper installation, stress concentration, and environmental factors. Especially in environments with frequent use, the torsion spring needs to withstand repeated stress, which causes it to gradually lose its elasticity, eventually preventing the seat from folding properly. Furthermore, torsion spring failure can also create safety hazards, such as the seat folding unexpectedly or failing to lock in a specific position.

[0004] To address these issues, the industry has explored various methods to improve the performance and lifespan of torsion springs. These include using higher-strength materials, refining spring design, increasing lubrication to reduce friction, and employing more complex mounting structures to distribute stress. While these methods have improved torsion spring performance to some extent, there is still room for improvement, particularly in enhancing reliability and reducing maintenance requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a folding seat structure with good reliability.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a folding seat structure, including a support base and a seat plate hinged to the support base, the seat plate having a first hinge portion, and the support base having a second hinge portion hinged to the first hinge portion; it also includes a fixing sleeve and a torsion spring, the torsion spring being installed inside the fixing sleeve, one end of the torsion spring being connected to the first hinge portion, and the other end of the torsion spring being connected to the second hinge portion; the fixing sleeve is installed on the first hinge portion and rotatably connected to the second hinge portion.

[0007] Furthermore, the fixing sleeve includes a front shell and a rear shell connected together, with a mounting cavity formed between the front shell and the rear shell. The rear shell is mounted on the first hinge portion, and the front shell is provided with a mounting shaft located within the mounting cavity. The torsion spring is mounted on the mounting shaft, and the mounting shaft is rotatably connected to the second hinge portion.

[0008] Furthermore, the front shell and the rear shell are detachably connected.

[0009] Furthermore, the first hinge portion is provided with a mounting groove, and the fixing sleeve is installed in the mounting groove.

[0010] Furthermore, the fixing sleeve is detachably installed in the mounting groove.

[0011] Furthermore, the first hinge portion is also provided with a positioning notch communicating with the mounting groove, and the fixing sleeve is provided with a positioning protrusion, which is installed in the positioning notch.

[0012] Furthermore, the mounting groove is provided with an identification mark, and when the fixing sleeve is installed in the mounting groove, the fixing sleeve covers the identification mark.

[0013] Furthermore, the first hinge portion is also provided with a sound-absorbing pad, which is used to abut against the second hinge portion.

[0014] Furthermore, the first hinge portion is also provided with a fixing groove, and the sound-absorbing pad is installed in the fixing groove.

[0015] Furthermore, the sound-absorbing pad is made of rubber.

[0016] The beneficial effects of this utility model are as follows: The folding seat structure provided by this utility model has the characteristics of high reliability. By installing the torsion spring in the fixed sleeve and connecting its two ends to the first and second hinge parts respectively, this design effectively protects the torsion spring and reduces the impact of external factors such as wear and corrosion on the torsion spring, thereby extending the service life of the torsion spring. The fixed sleeve provides a stable working environment for the torsion spring, reduces the deformation or damage that may occur during repeated folding, and ensures the stability and reliability of the seat folding action. Attached Figure Description

[0017] Figure 1 This is an assembly drawing of the folding seat structure according to Embodiment 1 of this utility model;

[0018] Figure 2 This is an exploded view of the folding seat structure according to Embodiment 1 of this utility model.

[0019] Label Explanation:

[0020] 1. Support base; 11. Second hinge part; 12. Hinge bolt; 13. Decorative cover; 2. Seat plate; 21. First hinge part; 211. Mounting groove; 212. Positioning notch; 213. Fixing groove; 3. Fixing sleeve; 31. Front shell; 311. Mounting shaft; 32. Rear shell; 321. Positioning protrusion; 4. Torsion spring; 5. Noise damping pad. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please refer to Figure 1 as well as Figure 2 A folding seat structure includes a support base 1 and a seat plate 2 hinged to the support base 1. The seat plate 2 has a first hinge portion 21, and the support base 1 has a second hinge portion 11 hinged to the first hinge portion 21. It also includes a fixing sleeve 3 and a torsion spring 4. The torsion spring 4 is installed in the fixing sleeve 3. One end of the torsion spring 4 is connected to the first hinge portion 21, and the other end of the torsion spring 4 is connected to the second hinge portion 11. The fixing sleeve 3 is installed on the first hinge portion 21 and rotatably connected to the second hinge portion 11.

[0023] As can be seen from the above description, the beneficial effects of this utility model are as follows: by installing the torsion spring 4 inside the fixed sleeve 3 and connecting its two ends to the first and second hinge parts 11 respectively, this design effectively protects the torsion spring 4, reduces the impact of external factors such as wear and corrosion on the torsion spring 4, and thus extends the service life of the torsion spring 4; the setting of the fixed sleeve 3 provides a stable working environment for the torsion spring 4, reduces the deformation or damage that may occur during repeated folding, and ensures the stability and reliability of the seat folding action.

[0024] Furthermore, the fixing sleeve 3 includes a front shell 31 and a rear shell 32 connected together, with a mounting cavity formed between the front shell 31 and the rear shell 32. The rear shell 32 is mounted on the first hinge part 21. The front shell 31 is provided with a mounting shaft 311, which is located in the mounting cavity. The torsion spring 4 is mounted on the mounting shaft 311, and the mounting shaft 311 is rotatably connected to the second hinge part 11.

[0025] As described above, the design of the front shell 31 and rear shell 32 of the fixing sleeve 3 forms a mounting cavity, allowing the torsion spring 4 to be mounted on the mounting shaft 311 and rotatably connected to the second hinge part 11. This design provides a compact and stable structure, making the installation and positioning of the torsion spring 4 more precise, and also facilitating the maintenance of the torsion spring 4.

[0026] Furthermore, the front shell 31 and the rear shell 32 are detachably connected.

[0027] As described above, the detachable connection design of the front shell 31 and the rear shell 32 improves the maintainability of the folding seat structure. When it is necessary to replace the torsion spring 4 or perform maintenance, the front shell 31 and the rear shell 32 can be easily separated without replacing the entire fixing sleeve 3.

[0028] Furthermore, the first hinge portion 21 is provided with a mounting groove 211, and the fixing sleeve 3 is installed in the mounting groove 211.

[0029] As can be seen from the above description, the first hinge part 21 is provided with a mounting groove 211 for mounting the fixing sleeve 3. This design provides a clear mounting position, ensuring the correct installation and positioning of the fixing sleeve 3, while also protecting the torsion spring 4 from external damage.

[0030] Furthermore, the fixing sleeve 3 is detachably installed in the mounting groove 211.

[0031] As described above, the detachable mounting of the fixing sleeve 3 in the mounting slot 211 improves the efficiency of maintenance and replacement of the folding seat structure. When the fixing sleeve 3 or the torsion spring 4 needs to be replaced, the fixing sleeve 3 can be quickly removed without the need for complex disassembly of the entire seat structure.

[0032] Furthermore, the first hinge portion 21 is also provided with a positioning notch 212 communicating with the mounting groove 211, and the fixing sleeve 3 is provided with a positioning protrusion 321, which is installed in the positioning notch 212.

[0033] As can be seen from the above description, the positioning notch 212 of the first hinge part 21 and the positioning protrusion 321 of the fixing sleeve 3 ensure the precise positioning of the fixing sleeve 3 in the mounting groove 211, preventing the fixing sleeve 3 from shifting during the seat folding process, thereby ensuring the stability and reliability of the seat folding.

[0034] Furthermore, the mounting groove 211 is provided with an identification mark, and when the fixing sleeve 3 is installed in the mounting groove 211, the fixing sleeve 3 covers the identification mark.

[0035] As described above, the identification mark within the mounting slot 211 and the obscuring design of the fixing sleeve 3 provide a visual confirmation mechanism to ensure the correct installation of the fixing sleeve 3. When the fixing sleeve 3 is correctly installed, the identification mark is obscured, allowing for direct confirmation of the installation status of the fixing sleeve 3.

[0036] Furthermore, the first hinge portion 21 is also provided with a sound-absorbing pad 5, which is used to abut against the second hinge portion 11.

[0037] As described above, the first hinge 21 is provided with a sound-absorbing pad 5 for contacting the second hinge 11. This design reduces noise during the folding process of the seat, improves the comfort of the seat, and also extends the service life of the hinge.

[0038] Furthermore, the first hinge portion 21 is also provided with a fixing groove 213, and the sound-absorbing pad 5 is installed in the fixing groove 213.

[0039] As can be seen from the above description, the design of installing the sound-absorbing pad 5 in the fixing groove 213 provides a stable installation method, ensuring that the sound-absorbing pad 5 will not shift during the seat folding process, thereby continuously and effectively exerting its sound-absorbing effect.

[0040] Furthermore, the sound-absorbing pad 5 is made of rubber.

[0041] As can be seen from the above description, by utilizing the softness and good elasticity of rubber, the impact and noise during the folding process are effectively absorbed, while also improving the durability and service life of the sound-absorbing pad 5.

[0042] Please refer to Figure 1 and Figure 2 One embodiment of this utility model is a folding seat structure, including a support base 1 and a seat plate 2 hinged to the support base 1. The seat plate 2 is provided with a first hinge portion 21, and the support base 1 is provided with a second hinge portion 11 hinged to the first hinge portion 21. It also includes a fixing sleeve 3 and a torsion spring 4. The torsion spring 4 is installed inside the fixing sleeve 3, with one end connected to the first hinge portion 21 and the other end connected to the second hinge portion 11. The fixing sleeve 3 is installed in the first hinge portion 21 and rotatably connected to the second hinge portion 11. By installing the torsion spring 4 inside the fixing sleeve 3 and connecting its two ends to the first and second hinge portions 11 respectively, this design effectively protects the torsion spring 4, reduces the impact of external factors such as wear and corrosion on the torsion spring 4, and thus extends the service life of the torsion spring 4. The fixing sleeve 3 provides a stable working environment for the torsion spring 4, reduces the deformation or damage that may occur during repeated folding, and ensures the stability and reliability of the seat folding action.

[0043] For the best option, please refer to the following: Figure 2The fixing sleeve 3 includes a front shell 31 and a rear shell 32 connected together, forming a mounting cavity between the front shell 31 and the rear shell 32. The rear shell 32 is mounted on the first hinge part 21. The front shell 31 is provided with a mounting shaft 311, which is located within the mounting cavity. The torsion spring 4 is mounted on the mounting shaft 311, and the mounting shaft 311 is rotatably connected to the second hinge part 11. It can be understood that the design of the front shell 31 and the rear shell 32 of the fixing sleeve 3 forms a mounting cavity, allowing the torsion spring 4 to be mounted on the mounting shaft 311 and rotatably connected to the second hinge part 11. This design provides a compact and stable structure, making the installation and positioning of the torsion spring 4 more precise, and also facilitating the maintenance of the torsion spring 4. Optionally, the front shell 31 and the rear shell 32 can be detachably connected. The detachable connection methods include, but are not limited to, bolt connections, snap-fit ​​connections, and magnetic connections, thus improving the maintainability of the folding seat structure. When the torsion spring 4 needs to be replaced or repaired, the front shell 31 and the rear shell 32 can be easily separated without replacing the entire retaining sleeve 3.

[0044] Preferably, the first hinge portion 21 is provided with a mounting groove 211, and the fixing sleeve 3 is installed in the mounting groove 211. The first hinge portion 21 is provided with a mounting groove 211 for installing the fixing sleeve 3. This design provides a clear installation position, ensuring the correct installation and positioning of the fixing sleeve 3, and also protecting the torsion spring 4 from external damage. Specifically, the fixing sleeve 3 is detachably installed in the mounting groove 211. The detachable installation of the fixing sleeve 3 in the mounting groove 211 improves the maintenance and replacement efficiency of the folding seat structure. When the fixing sleeve 3 or the torsion spring 4 needs to be replaced, the fixing sleeve 3 can be quickly disassembled without the need for a complex disassembly of the entire seat structure. More specifically, the first hinge part 21 is also provided with a positioning notch 212 communicating with the mounting groove 211, and the fixing sleeve 3 is provided with a positioning protrusion 321. The positioning protrusion 321 is installed in the positioning notch 212. It is easy to see that the positioning notch 212 of the first hinge part 21 and the positioning protrusion 321 of the fixing sleeve 3 ensure the precise positioning of the fixing sleeve 3 in the mounting groove 211, prevent the fixing sleeve 3 from shifting during the seat folding process, and thus ensure the stability and reliability of the seat folding.

[0045] In detail, the second hinge portion 11 is provided with a hinge bolt 12 connected to the mounting shaft 311. The hinge bolt 12 passes through the second hinge portion 11 from the side of the second hinge portion 11 opposite to the first hinge portion 21 and is connected to the mounting shaft 311. In order to ensure that the hinge bolt 12 is not exposed and to prevent the hinge bolt 12 from falling off, the support base 1 is also provided with a decorative cover 13 to cover the hinge bolt 12.

[0046] Optionally, the mounting slot 211 is provided with an identification mark. When the fixing sleeve 3 is installed in the mounting slot 211, the fixing sleeve 3 obscures the identification mark. This design, where the identification mark in the mounting slot 211 and the fixing sleeve 3 obscure each other, provides a visual confirmation mechanism to ensure the fixing sleeve 3 is correctly installed. When the fixing sleeve 3 is correctly installed, the identification mark is obscured, allowing for direct confirmation of the installation status of the fixing sleeve 3. Further, optionally, the identification mark can be made of a reflective material.

[0047] In this embodiment, the first hinge portion 21 is further provided with a sound-absorbing pad 5, which is used to abut against the second hinge portion 11. This design reduces noise during the seat folding process, improves the comfort of seat use, and also extends the service life of the hinge portion. Specifically, the first hinge portion 21 is also provided with a fixing groove 213, and the sound-absorbing pad 5 is installed in the fixing groove 213. This provides a stable installation method, ensuring that the sound-absorbing pad 5 will not shift during the seat folding process, thereby continuously and effectively exerting its sound-absorbing effect. More specifically, the sound-absorbing pad 5 is made of rubber. Utilizing the softness and good elasticity of rubber, it effectively absorbs the impact and noise during the folding process, while also improving the durability and service life of the sound-absorbing pad 5.

[0048] In summary, the folding seat structure provided by this utility model has the characteristics of high reliability. By installing the torsion spring inside the fixed sleeve and connecting its two ends to the first and second hinge parts respectively, this design effectively protects the torsion spring and reduces the impact of external factors such as wear and corrosion on the torsion spring, thereby extending the service life of the torsion spring. The fixed sleeve provides a stable working environment for the torsion spring, reducing the deformation or damage that may occur during repeated folding, and ensuring the stability and reliability of the seat folding action.

[0049] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A folding seat structure, characterized in that, The device includes a support base and a seat plate hinged to the support base. The seat plate has a first hinge portion, and the support base has a second hinge portion hinged to the first hinge portion. It also includes a fixing sleeve and a torsion spring. The torsion spring is installed inside the fixing sleeve. One end of the torsion spring is connected to the first hinge portion, and the other end of the torsion spring is connected to the second hinge portion. The fixing sleeve is installed on the first hinge portion and rotatably connected to the second hinge portion.

2. The folding seat structure according to claim 1, characterized in that, The fixing sleeve includes a front shell and a rear shell connected together, forming a mounting cavity between the front shell and the rear shell. The rear shell is mounted on the first hinge part. The front shell is provided with a mounting shaft, which is located in the mounting cavity. The torsion spring is mounted on the mounting shaft, and the mounting shaft is rotatably connected to the second hinge part.

3. The folding seat structure according to claim 2, characterized in that, The front shell and the rear shell are detachably connected.

4. The folding seat structure according to claim 1, characterized in that, The first hinge portion is provided with a mounting groove, and the fixing sleeve is installed in the mounting groove.

5. The folding seat structure according to claim 4, characterized in that, The fixing sleeve can be detachably installed in the mounting slot.

6. The folding seat structure according to claim 4 or 5, characterized in that, The first hinge portion is also provided with a positioning notch communicating with the mounting groove, and the fixing sleeve is provided with a positioning protrusion, which is installed in the positioning notch.

7. The folding seat structure according to claim 4 or 5, characterized in that, The mounting slot is provided with an identification mark. When the fixing sleeve is installed in the mounting slot, the fixing sleeve covers the identification mark.

8. The folding seat structure according to claim 1, characterized in that, The first hinge portion is also provided with a sound-absorbing pad, which is used to abut against the second hinge portion.

9. The folding seat structure according to claim 8, characterized in that, The first hinge portion is also provided with a fixing groove, and the sound-absorbing pad is installed in the fixing groove.

10. The folding seat structure according to claim 8, characterized in that, The sound-absorbing pad is made of rubber.

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