Torsion spring seat, rotating connection structure and vehicle
By designing the eccentric section and limiting groove structure of the torsion spring seat, the problem of displacement of the torsion spring due to axial force in the vehicle handrail was solved, realizing the stable connection of the torsion spring and the reliable force of the rotating parts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI LIXIANG AUTOMOBILE CO LTD
- Filing Date
- 2025-01-23
- Publication Date
- 2026-07-24
AI Technical Summary
In the rotating connection structure of vehicle handrails, torsion springs are prone to displacement along the fixed post due to axial force, causing the handrail to malfunction. Existing technology is unable to effectively prevent this situation.
Design a torsion spring seat, including an eccentric section and a limiting groove. The spring wire at the end of the torsion spring is embedded in the limiting groove and is blocked by the groove wall to prevent the spring wire from shifting axially along the fixed column. The connection is further stabilized by a snap-fit channel and an anti-detachment block.
It effectively prevents the torsion spring from shifting axially along the fixed column, ensuring that the force exerted by the torsion spring on the rotating parts is stable and reliable, and avoiding the failure of the handrail function.
Smart Images
Figure CN122447437A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vehicle technology, and more particularly to a torsion spring seat, a rotating connection structure, and a vehicle. Background Technology
[0002] In the overall structure of a vehicle, there are often rotating connection structures with torsion springs, such as armrest assemblies. The torsion spring is typically fitted onto a fixed post and connected to the armrest. During the opening and closing of the armrest, the torsion spring is subjected to torque, bearing not only a radial component force but also an axial component force. After repeated opening and closing of the armrest, the torsion spring may shift along the axial direction of the fixed post under the action of the axial component force. This reduces the force exerted by the torsion spring on the armrest, affecting the opening angle of the armrest. In severe cases, the torsion spring may detach from the armrest, causing the armrest assembly to malfunction.
[0003] In related technologies, methods such as lengthening the fixing column or installing a baffle structure at the end of the fixing column are commonly used to prevent the torsion spring from detaching from the handrail, but these methods cannot avoid the problem of torsion spring displacement. Therefore, there is an urgent need for a torsion spring seat and a rotating connection structure to solve the above-mentioned technical problems. Summary of the Invention
[0004] One object of the present invention is to provide a torsion spring seat that effectively prevents the torsion spring from shifting axially along the fixed post.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A torsion spring seat is provided, comprising a seat body, wherein a fixing post is provided on the seat body, characterized in that the fixing post includes an eccentric section for the torsion spring to be sleeved, the eccentric section is provided with a limiting groove, and the spring wire at the end of the torsion spring can be embedded into the limiting groove and connected to the seat body.
[0007] Optionally, the eccentric section includes a column and a limiting protrusion disposed around the periphery of the column. The limiting groove divides the limiting protrusion into a first limiting protrusion and a second limiting protrusion. The first limiting protrusion and the second limiting protrusion are spaced apart along the axial direction of the fixed column.
[0008] The torsion spring can be sleeved on the shaft portion of the eccentric section with the first limiting protrusion, and the torsion spring abuts against the first limiting protrusion. The spring wire of the torsion spring, along the axial direction of the fixed column towards the second limiting protrusion, can be embedded into the limiting groove and connected to the seat body.
[0009] Optionally, the first limiting protrusion has a transition surface at one end of the fixed post facing the second limiting protrusion along the axial direction of the fixed post.
[0010] Optionally, the transition surface is set as a rounded surface or a chamfered surface.
[0011] Optionally, the cross-sectional shape of the first limiting protrusion is fan-shaped;
[0012] And / or, the cross-sectional shape of the second limiting protrusion is fan-shaped.
[0013] Optionally, the seat body includes a snap-fit wall located on the periphery of the eccentric section, and the snap-fit wall is provided with a snap-fit channel, wherein the spring wire at the end of the torsion spring can snap into the snap-fit channel.
[0014] Optionally, at least two snap-fit channels are provided on the snap-fit wall at circumferential intervals along the fixing post.
[0015] Optionally, the snap-fit channel is provided with an anti-detachment block, and the spring wire at the end of the torsion spring can be hooked onto the anti-detachment block.
[0016] Another object of the present invention is to provide a rotating connection structure comprising:
[0017] The aforementioned torsion spring seat;
[0018] A rotating component is rotatably connected to the torsion spring seat;
[0019] A torsion spring is disposed on the torsion spring seat and connected to the rotating component.
[0020] Optionally, the fixed column has an axial through hole, a shaft passes through the through hole, and the rotating component is connected to the shaft.
[0021] Optionally, the shaft is interference-fitted with the through hole shaft hole.
[0022] Optionally, the rotating connection structure is configured as a handrail assembly, the torsion spring seat is configured as a handrail frame, and the rotating component is configured as a handrail.
[0023] Another object of the present invention is to provide a vehicle including the above-described rotating connection structure.
[0024] Beneficial effects:
[0025] The torsion spring seat provided by this invention, when the torsion spring mounted on the torsion spring seat is subjected to torsional force, allows the torsion spring to abut against the eccentric section, and the spring wire at the end of the torsion spring can be bent into the limiting groove and embedded in the limiting groove, effectively preventing the spring wire from dislodging from the limiting groove. Furthermore, the spring wire embedded in the limiting groove is resisted by the groove wall, forming a limiting fit with the limiting groove along the axial direction of the fixed column, effectively preventing the torsion spring from shifting along the axial direction of the fixed column.
[0026] The rotating connection structure provided by the present invention effectively prevents the torsion spring from shifting by setting a torsion spring seat, thereby ensuring that the force exerted by the torsion spring on the rotating part is stable and reliable.
[0027] The vehicle provided by this invention effectively prevents the torsion spring from shifting by setting up a rotating connection structure. Attached Figure Description
[0028] Figure 1 This is a partial structural schematic diagram of the torsion spring seat provided by the present invention;
[0029] Figure 2 This is a schematic diagram of the torsion spring provided by the present invention;
[0030] Figure 3 This is a partial structural schematic diagram of the rotating connection structure provided by the present invention;
[0031] Figure 4 This is a partial structural cross-sectional view of the torsion spring seat provided by the present invention;
[0032] Figure 5 This is another partial structural schematic diagram of the torsion spring seat provided by the present invention;
[0033] Figure 6 This is a schematic diagram of the connection structure between the seat body, the rotating component, and the shaft provided by the present invention;
[0034] Figure 7 This is a partial structural cross-sectional view of the rotating connection structure provided by the present invention;
[0035] Figure 8 This is a schematic diagram of the rotating connection structure provided by the present invention.
[0036] In the picture:
[0037] 110. Seat body; 111. Limiting wall; 1111. Through hole; 112. Snap-fit wall; 1121. Snap-fit channel; 11211. Guide groove; 11212. First snap-fit groove; 11213. Second snap-fit groove; 1122. Anti-detachment block; 120. Fixing post; 121. First limiting protrusion; 1211. Transition surface; 122. Second limiting protrusion; 123. Limiting groove; 124. Through hole; 130. Shaft; 131. Knurled structure;
[0038] 200. Torsion spring; 210. Spring body; 220. First spring arm; 221. First spring wire; 222. Second spring wire; 223. Third spring wire; 230. Second spring arm;
[0039] 300, Rotating component; 310, Hinge hole; 320, Support base. Detailed Implementation
[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.
[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 based on the specific circumstances.
[0042] 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.
[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.
[0044] Reference Figures 1 to 4 As shown, this embodiment provides a torsion spring seat, which includes a seat body 110. The seat body 110 is provided with a fixing post 120. The fixing post 120 includes an eccentric section for the torsion spring 200 to be fitted. The eccentric section is provided with a limiting groove 123. The spring wire at the end of the torsion spring 200 can be embedded into the limiting groove 123 and connected to the seat body 110.
[0045] In this embodiment, when the torsion spring 200 mounted on the torsion spring seat is subjected to torque, the torsion spring 200 is sleeved on the eccentric section, allowing the torsion spring 200 to abut against the eccentric section. The spring wire at the end of the torsion spring 200 can be bent into the limiting groove 123 and embedded in the limiting groove 123, effectively preventing the spring wire from dislodging from the limiting groove 123. Furthermore, when the torsion spring 200 is subjected to a torque with radial component F1 and axial component F2, the spring wire embedded in the limiting groove 123 is resisted by the groove wall of the limiting groove 123, forming a limiting fit with the limiting groove 123 along the axial direction of the fixed post 120, effectively preventing the torsion spring 200 from shifting along the axial direction of the fixed post 120.
[0046] Specifically, the torsion spring 200 may include a spring body 210 and a first spring arm 220 and a second spring arm 230 disposed at both ends of the spring body 210. The spring body 210 is sleeved on the eccentric section. The first spring arm 220 can be embedded into the limiting groove 123 and connected to the seat body 110. The second spring arm 230 can be connected to the rotating member 300. The rotating member 300 can be rotatably connected to the torsion spring seat, and under the action of the second spring arm 230, the rotating member 300 always has a tendency to rotate in one direction. It can be understood that the eccentric section is eccentrically positioned relative to the rotation axis of the rotating member 300. In this embodiment, under the action of the seat body 110 and the rotating member 300, the torsion spring 200 can always be subjected to torsion. The rotation of the rotating member 300 relative to the torsion spring seat drives the second spring arm 230 to move within a certain range, which can limit the contact between the spring body 210 and the eccentric section within a certain range, so as to ensure that the first spring arm 220 is always bent inward along the radial direction of the spring body 210, and the limiting groove 123 can accommodate the bending of the first spring arm 220, thereby ensuring that the first spring arm 220 can be stably embedded in the limiting groove 123.
[0047] In some embodiments, the portion of the spring wire connecting the spring body 210 and the first spring arm 220 can also be embedded in the limiting groove 123, which can better prevent the torsion spring 200 from shifting axially along the fixed post 120.
[0048] In this embodiment, the eccentric segment includes a column and a limiting protrusion disposed around the periphery of the column. The limiting groove 123 divides the limiting protrusion into a first limiting protrusion 121 and a second limiting protrusion 122. The first limiting protrusion 121 and the second limiting protrusion 122 are spaced apart along the axial direction of the fixed column 120. A torsion spring 200 can be sleeved on the shaft portion of the eccentric segment where the first limiting protrusion 121 is provided, and the torsion spring 200 abuts against the first limiting protrusion 121. The spring wire of the torsion spring 200 at one end facing the second limiting protrusion 122 along the axial direction of the fixed column 120 can be embedded into the limiting groove 123 and connected to the seat body 110.
[0049] For example, the cross-sectional shape of the column includes, but is not limited to, polygonal or circular shapes. Columns with polygonal or circular cross-sectional shapes have good structural strength and facilitate the molding of the base body 110.
[0050] Specifically, when the spring body 210 is sleeved on the shaft portion of the fixed post 120 that has the first limiting protrusion 121, the first spring arm 220 is located at the end of the spring body 210 facing the second limiting protrusion 122, and the second spring arm 230 is located at the end of the spring body 210 away from the second limiting protrusion 122. When the torsion spring 200 is subjected to torque, under the connection limitation of the rotating member 300, the spring body 210 abuts against the first limiting protrusion 121, and the limiting groove 123 provides clearance space for the bending of the first spring arm 220. The first spring arm 220 bends radially inward along the spring body 210 to be stably embedded in the limiting groove 123.
[0051] For example, when the torsion spring 200 is not subjected to torque, the spring body 210 and the first limiting protrusion 121 are in clearance fit. In this embodiment, when the torsion spring 200 is not subjected to torque, the radial clearance between the spring body 210 and the first limiting protrusion 121 can be 0.3mm-1mm, for example 0.4mm, 0.5mm or 0.6mm.
[0052] In one feasible implementation, the cross-sectional shape of the first limiting protrusion 121 can be fan-shaped to provide good support for the spring body 210 of the torsion spring 200.
[0053] In one feasible implementation, the cross-sectional shape of the second limiting protrusion 122 can be fan-shaped, which facilitates the torsion spring 200 being fitted onto the fixed post 120.
[0054] In one feasible implementation, the cross-sectional shape of the first limiting protrusion 121 and the second limiting protrusion 122 is both fan-shaped.
[0055] For example, the outer diameter of the first limiting protrusion 121 is equal to the outer diameter of the second limiting protrusion 122. This ensures that the spring wire at the end of the torsion spring 200 can be stably embedded in the limiting groove 123, while also facilitating the fitting of the torsion spring 200 onto the fixing post 120 and promoting the injection molding of the torsion spring seat. Of course, the outer diameters of the first limiting protrusion 121 and the second limiting protrusion 122 may also be unequal.
[0056] In one feasible embodiment, the first limiting protrusion 121 has a transition surface 1211 at one end along the axial direction of the fixing post 120 toward the second limiting protrusion 122. When installing the torsion spring 200, the spring body 210 can smoothly slide onto the first limiting protrusion 121 via the transition surface 1211, effectively preventing the spring wire of the spring body 210 from getting stuck in the limiting groove 123 and affecting the assembly of the torsion spring 200.
[0057] For example, such as Figure 4 As shown, the distance h between the transition surface 1211 and the column is less than or equal to the radius of the spring wire, so that the spring body 210 can smoothly slide through the transition surface 1211 onto the first limiting protrusion 121.
[0058] For example, the transition surface 1211 includes, but is not limited to, an arc surface or a chamfered surface, wherein the contact between the spring wire of the spring body 210 and the arc surface or chamfered surface is smooth, effectively preventing the spring wire of the spring body 210 from moving and getting stuck between the arc surface or chamfered surface, so that the spring body 210 can smoothly slide onto the first limiting protrusion 121 via the transition surface 1211.
[0059] In this embodiment, reference is made to Figure 1 and Figure 2 As shown, the base body 110 includes a snap-fit wall 112, which is located around the fixed post 120. The snap-fit wall 112 is provided with a snap-fit channel 1121, and the spring wire at the end of the torsion spring 200 can be snapped into the snap-fit channel 1121. Specifically, the first spring arm 220 can be snapped into the snap-fit channel 1121, so that the torsion spring 200 and the torsion spring base form an interactive force, and facilitate the assembly of the torsion spring 200.
[0060] Specifically, the seat body 110 also includes a limiting wall 111 that is angled to the snap-fit wall 112. A fixing post 120 is provided on the limiting wall 111, and a second limiting protrusion 122 is located on the side of the first limiting protrusion 121 away from the limiting wall 111 along the axial direction of the fixing post 120.
[0061] In one feasible implementation, the snap-fit wall 112 is provided with at least two snap-fit channels 1121 spaced circumferentially along the fixing post 120. One of the snap-fit channels 1121 can be selected to snap into the end spring wire of the torsion spring 200. By setting at least two snap-fit channels 1121, the magnitude of the torsional force on the torsion spring 200 can be adjusted, that is, the magnitude of the force exerted by the torsion spring 200 on the rotating member 300 can be adjusted. This ensures that the rotating member 300 rotates at a moderate speed relative to the torsion spring seat when it is not subjected to any external force other than the torsion spring 200, thereby improving the user experience. In addition, by setting at least two snap-fit channels 1121, the length of the spring wire at the end of the torsion spring 200 embedded in the limiting groove 123 can also be adjusted, effectively preventing the spring wire from dislodging from the limiting groove 123.
[0062] In one feasible implementation, the snap-fit channel 1121 is provided with an anti-detachment block 1122, and the spring wire at the end of the torsion spring 200 can be hooked onto the anti-detachment block 1122, effectively preventing the spring wire from detaching from the snap-fit channel 1121, ensuring a stable and reliable connection between the torsion spring 200 and the torsion spring seat, and facilitating the assembly of the torsion spring 200.
[0063] Specifically, the snap-fit channel 1121 includes a guide groove 11211 and a first snap-fit groove 11212 and a second snap-fit groove 11213 communicating with the guide groove 11211. Both the first snap-fit groove 11212 and the second snap-fit groove 11213 are set at an angle to the guide groove 11211, and an anti-detachment block 1122 is formed between the first snap-fit groove 11212 and the second snap-fit groove 11213. The first spring arm 220 includes a first spring wire 221, a second spring wire 222, and a third spring wire 223 bent sequentially. The first spring wire 221 can be located in the first slot 11212, the third spring wire 223 can be located in the second slot 11213, and the second spring wire 222 is located on the side of the anti-detachment block 1122 away from the fixed post 120, so as to realize the hooking of the first spring arm 220 and the anti-detachment block 1122. Through the limiting cooperation between the second spring wire 222 and the anti-detachment block 1122, the first spring wire 221 is effectively prevented from detaching from the first slot 11212 and the third spring wire 223 is detached from the second slot 11213.
[0064] For example, the first slot 11212 and the second slot 11213 can be set at an angle, and the angle α between the first slot 11212 and the second slot 11213 can be an acute angle, so that the first spring arm 220 can extend into the first slot 11212 and the second slot 11213.
[0065] For example, the guide groove 11211 can be configured as an open groove, and its opening can be located on one side edge of the snap-fit wall 112 away from the limiting wall 111 along the axial direction of the fixing post 120, so that the torsion spring 200 can be sleeved on the fixing post 120.
[0066] Reference Figures 1 to 8 As shown, this embodiment also provides a rotating connection structure, which includes a rotating component 300, a torsion spring 200, and the aforementioned torsion spring seat. The rotating component 300 is rotatably connected to the torsion spring seat; the torsion spring 200 is disposed on the torsion spring seat and connected to the rotating component 300. In this embodiment, the torsion spring seat effectively prevents the torsion spring 200 from shifting, thereby ensuring that the force exerted by the torsion spring 200 on the rotating component 300 is stable and reliable.
[0067] In this embodiment, reference is made to Figure 1 , Figures 5 to 7 As shown, the fixed column 120 is provided with an axial through hole 124, and a shaft 130 is inserted through the through hole 124. The rotating part 300 is connected to the shaft 130 to realize the rotatable connection between the rotating part 300 and the torsion spring seat, which facilitates assembly.
[0068] In some embodiments, the shaft 130 is interference-fitted with the through hole 124 to prevent the shaft 130 from moving axially relative to the torsion spring seat, thereby preventing the shaft 130 from disengaging from the hinge hole 310. The rotating member 300 is rotatably connected to the shaft 130 to achieve a rotatable connection between the rotating member 300 and the torsion spring seat.
[0069] For example, the rotating component 300 is provided with a hinge hole 310 through which the shaft 130 passes. During assembly, the shaft 130 is sequentially passed through the through hole 124 and the hinge hole 310. For example, the part of the shaft 130 that mates with the hinge hole 310 has a smooth structure, which can realize the rotational connection between the shaft 130 and the rotating component 300.
[0070] For example, to prevent excessive stress concentration on the shaft 130 and to prevent the shaft 130 from breaking, the rotating member 300 is also provided with a support seat 320, which has a slot or hole through which the shaft 130 can pass. For example, the support seat 320 may also be provided with a baffle (not shown), and the shaft 130 and the baffle form an axial limiting fit to achieve positioning assembly between the shaft 130 and the rotating member 300, and to prevent the shaft 130 from dislodging from the through hole 124.
[0071] For example, one end of the shaft 130 is provided with a knurled structure 131, which abuts against the wall of the through hole 124 to form an interference fit between the shaft and the hole, and the part of the shaft 130 with the knurled structure 131 is convenient for passing through the through hole 124.
[0072] In some embodiments, the shaft 130 is interference-fitted with the hinge hole 310, and the fixed column 120 is rotatably connected to the shaft 130 through the through hole 124.
[0073] In this embodiment, reference is made to Figure 1 and Figure 5 As shown, the limiting wall 111 is provided with a through hole 1111, and the second spring arm 230 is connected to the rotating member 300 according to the through hole 1111. Exemplarily, the rotating member 300 may be provided with a connecting hole (not shown) for the second spring arm 230 to pass through. The second spring arm 230 can be configured as a straight line, that is, the second spring arm 230 can pass through the through hole 1111 and the connecting hole in sequence for easy assembly. Exemplarily, the connecting hole can be a round hole. Exemplarily, the through hole 1111 can be an arc-shaped hole to allow space for the second spring arm 230. Of course, the torsion spring 200 can also be connected to the rotating member 300 by means of the periphery of the second spring arm 230 abutting against a plane or arc surface on the rotating member 300, or by other connection methods; this embodiment is not limited to this.
[0074] For example, the torsion spring seat includes two opposing limiting walls 111, each of which is provided with a fixing post 120. The rotating component 300 can be installed between the two limiting walls 111, thus realizing the positioning and assembly of the rotating component 300.
[0075] In one feasible implementation, the rotating connection structure is set as the handrail assembly, the torsion spring seat is set as the handrail frame, and the rotating component 300 is set as the handrail.
[0076] For example, at least one fixing post 120 may be provided on the limiting wall 111. Figure 8 As shown, the handrail assembly includes two handrails, and the limiting wall 111 is provided with two fixing posts 120 that correspond one-to-one with the handrails.
[0077] This embodiment also provides a vehicle, which includes the aforementioned rotating connection structure. In this embodiment, the rotating connection structure can be configured as a mechanism using the torsion spring 200, such as an armrest assembly, storage box, glove box, and cup holder. In this embodiment, by setting up the rotating connection structure, displacement of the torsion spring 200 is effectively prevented, thereby preventing the malfunction of mechanisms using the torsion spring 200, such as the armrest assembly, storage box, glove box, and cup holder.
[0078] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A torsion spring seat, comprising a seat body (110), wherein a fixing post (120) is provided on the seat body (110), characterized in that, The fixing post (120) includes an eccentric section for the torsion spring (200) to be fitted, the eccentric section is provided with a limiting groove (123), and the spring wire at the end of the torsion spring (200) can be embedded into the limiting groove (123) and connected to the seat body (110).
2. The torsion spring seat according to claim 1, characterized in that, The eccentric section includes a column and a limiting protrusion disposed around the periphery of the column. The limiting groove (123) divides the limiting protrusion into a first limiting protrusion (121) and a second limiting protrusion (122). The first limiting protrusion (121) and the second limiting protrusion (122) are spaced apart along the axial direction of the fixed column (120). The torsion spring (200) can be sleeved on the shaft portion of the eccentric section where the first limiting protrusion (121) is provided, and the torsion spring (200) abuts against the first limiting protrusion (121). The spring wire of the torsion spring (200) at one end of the fixed column (120) facing the second limiting protrusion (122) can be embedded into the limiting groove (123) and connected to the seat body (110).
3. The torsion spring seat according to claim 2, characterized in that, The first limiting protrusion (121) has a transition surface (1211) at one end of the fixed post (120) facing the second limiting protrusion (122) along the axial direction of the fixed post (120).
4. The torsion spring seat according to claim 3, characterized in that, The transition surface (1211) is set as a circular arc surface or a chamfered surface.
5. The torsion spring seat according to claim 2, characterized in that, The cross-sectional shape of the first limiting protrusion (121) is fan-shaped; And / or, the cross-sectional shape of the second limiting protrusion (122) is fan-shaped.
6. The torsion spring seat according to any one of claims 1-5, characterized in that, The seat body (110) includes a snap-fit wall (112), which is located on the periphery of the eccentric section. The snap-fit wall (112) is provided with a snap-fit channel (1121), and the spring wire at the end of the torsion spring (200) can be snapped into the snap-fit channel (1121).
7. The torsion spring seat according to claim 6, characterized in that, At least two snap-fit channels (1121) are provided on the snap-fit wall (112) at circumferential intervals along the fixing post (120).
8. The torsion spring seat according to claim 6, characterized in that, The snap-fit channel (1121) is provided with an anti-detachment block (1122), and the spring wire at the end of the torsion spring (200) can be hooked onto the anti-detachment block (1122).
9. A rotating connection structure, characterized in that, include: Torsion spring seat as described in any one of claims 1-8; The rotating component (300) is rotatably connected to the torsion spring seat; A torsion spring (200) is disposed on the torsion spring seat and connected to the rotating member (300).
10. The rotating connection structure according to claim 9, characterized in that, The fixed column (120) is provided with an axial through hole (124), and a shaft (130) is inserted through the through hole (124). The rotating component (300) is connected to the shaft (130).
11. The rotating connection structure according to claim 10, characterized in that, The shaft (130) is interference-fitted with the through hole (124).
12. The rotating connection structure according to claim 9, characterized in that, The rotating connection structure is configured as a handrail assembly, the torsion spring seat is configured as a handrail frame, and the rotating component (300) is configured as a handrail.
13. A vehicle, characterized in that, Includes the rotating connection structure as described in any one of claims 9-12.