High-sensitivity torsion spring of automobile
By introducing transition components and elastic rubber structures into automotive torsion springs, the force transmission path is optimized, solving the problems of insufficient torque control accuracy and vibration noise. This achieves high-precision torque control and reduced noise, adapting to various vehicle models and operating conditions, and reducing manufacturing complexity and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-10
AI Technical Summary
Existing automotive torsion springs lack sufficient torque control precision in high-end models, making it difficult to meet the requirements for smooth door opening and closing and quiet operation. Furthermore, in extreme temperature environments, the mismatch in the thermal expansion coefficients of the materials leads to increased vibration transmission efficiency and generates abnormal noises.
A high-sensitivity torsion spring for automobiles is designed. By setting transition parts at both ends of the spring body, including assembly plates and fixing plates, and utilizing adjustment parts and elastic rubber pillars and rubber disc structures, the spacing can be adjusted and buffered, the force transmission path can be optimized, and stress concentration and vibration transmission can be reduced.
It achieves high-precision torque control, reduces torque attenuation, extends service life, eliminates abnormal noise, adapts to various vehicle models and operating conditions, and reduces manufacturing complexity and cost.
Smart Images
Figure CN224107595U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to torsion spring technical field especially relates to a high sensitivity torsion spring of car. BACKGROUND
[0002] In the modern automobile industry field, torsion spring as core elastic energy storage component, is widely used in the key mechanism such as door limiter, suspension system, steering assist and engine tensioning device. With door limiter as an example, the structure of spring and hinge integration is widely used in prior art, and limiting force is generated through torsion bar deformation, but in practical application, the torque control precision of two or three gears adjustment still exists ± 15% fluctuation, and it is difficult to meet the strict requirements of high-end vehicle type on door opening and closing smoothness and quietness. In active suspension system, although the traditional torsion bar spring can realize vertical displacement control, its torque response speed can only reach millisecond level due to the structure design, and when responding to high-frequency road excitation, it cannot quickly match the demand of vehicle body posture adjustment, resulting in the decline of driving comfort.
[0003] Through in-depth research, it is found that the structure design of the existing automobile torsion spring has significant technical bottleneck. The coupling design of the existing spring structure and the surrounding components is insufficient, and there is lack of effective buffer transition structure. In the extreme temperature environment, due to the mismatch of material thermal expansion coefficient, the matching gap between the spring and the mounting seat changes, which increases the vibration transmission efficiency and produces obvious abnormal noise. In view of the above reasons, the present application proposes a high sensitivity torsion spring with buffer and micro-adjustment use spacing for automobile. SUMMARY
[0004] The utility model discloses a kind of high sensitivity torsion springs with buffer and micro-adjustment use spacing for automobile to the problems existing in background art.
[0005] The technical scheme of the utility model: a high sensitivity torsion spring for automobile, including spring main body and the transition piece for being assembled with connecting piece setting at the both ends of spring main body, elastic member is set between the transition piece and the end of elastic member, the transition piece includes assembly plate and fixed plate, multiple adjustment pieces for the spacing adjustment between assembly plate and fixed plate are set.
[0006] Optionally, the elastic member includes an elastic rubber column mounted in the inner circle of the spring main body and an elastic rubber disc mounted at one end of the elastic rubber column.
[0007] Optionally, the side surface of the fixed plate connected with the elastic rubber disc is provided with a mounting groove, and the elastic rubber disc is connected with the fixed plate through the mounting groove.
[0008] Optionally, a plurality of buffer grooves are formed in the fixing plate along the circumferential direction, and the top positions of the plurality of groups of buffer grooves are provided with threaded holes penetrating the assembly plate, and the adjusting member is installed at the positions of the threaded holes.
[0009] Optionally, a plurality of groups of mounting holes for connecting member assembly are further formed in the assembly plate along the circumferential direction.
[0010] Optionally, the adjusting member comprises a bolt threadedly assembled with the inner wall of the threaded hole, the bottom of the bolt is connected with a plurality of fixing columns, and the other end of the fixing column is connected with a circular fixing block located in the buffer groove.
[0011] Optionally, the side of the circular fixing block is connected with a buffer pad, and the other side of the circular fixing block is provided with a buffer washer sleeved on the outer circle of the fixing column.
[0012] Compared with the prior art, the utility model has the following beneficial technical effects:
[0013] The adjusting member between the assembly plate and the fixing plate can adjust the spacing, optimize the force transmission path, reduce the deflection torque, reduce the spring stress concentration, reduce the torque attenuation, and prolong the service life.
[0014] The threaded hole cooperates with the adjusting member to meet the high-precision requirements of automatic driving and the like, the compact design saves space, the adjusting member can be adjusted, and the adjusting member is suitable for various vehicle models and working conditions.
[0015] The utility model further comprises an elastic rubber column, an elastic rubber disc and a mounting groove, which are combined with the adjusting member threaded adjustment, can self-adaptively compensate the gap, reduce vibration transmission, eliminate abnormal noise, reduce the manufacturing process complexity of the block structure, rely on equipment reduction, and reduce the cost.
[0016] In summary, the utility model has the advantages of adjustable installation spacing, optimized force transmission, reduced stress concentration, prolonged spring life, compact structure suitable for multiple scenes, self-adaptively compensated gap by the combination of the elastic rubber column, the elastic rubber disc and the adjusting member threaded adjustment, and reduced manufacturing complexity and cost by the modular design. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A front view structural schematic diagram of the utility model is given;
[0018] Figure 2 An exploded structural schematic diagram of the utility model is given;
[0019] Figure 3 A local cross-sectional structural schematic diagram of the utility model is given;
[0020] Figure 4 An exploded schematic diagram of the transition piece in the utility model is given.
[0021] Reference signs:
[0022] 1. spring body;
[0023] 2. transition piece; 21, assembly plate; 210, mounting hole; 211, threaded hole; 22, fixing plate; 220, buffer groove; 23, adjusting piece; 231, bolt; 232, fixing column; 233, circular fixing block; 234, buffer pad; 235, buffer washer;
[0024] 3. elastic piece; 31, elastic rubber column; 32, elastic rubber disc. DETAILED DESCRIPTION
[0025] The technical solutions of the present disclosure will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments.
[0026] The components of the embodiments of the present disclosure generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the claimed present disclosure, but only represents selected embodiments of the present disclosure.
[0027] Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present disclosure.
[0028] In the description of the present disclosure, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.
[0029] In the description of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.
[0030] EMBODIMENTS
[0031] As Figures 1-4As shown, the utility model provides a kind of automobile high sensitivity torsion spring, including spring main body 1 and the transition piece 2 for being set to spring main body 1 both ends and used to be assembled with connecting piece, elastic member 3 is arranged between the end of transition piece 2 and elastic member 3, and elastic member 3 includes the elastic rubber column 31 installed in the inner ring of spring main body 1 and the elastic rubber disc 32 installed in one end of elastic rubber column 31;
[0032] As Figure 4 Shown, transition piece 2 includes assembly plate 21 and fixed plate 22, and still be provided with multiple groups of installation hole 210 for connecting piece assembly on assembly plate 21 along circumference direction;
[0033] As Figure 3 Shown, the side surface of fixed plate 22 and elastic rubber disc 32 connection is provided with installation groove, and elastic rubber disc 32 is connected with fixed plate 22 by installation groove, and elastic rubber disc 32 is set in the contact end of spring main body 1 and transition piece 2, and multiple groups of adjusting member 23 for the spacing adjustment between assembly plate 21 and fixed plate 22 are arranged between assembly plate 21 and fixed plate 22;
[0034] As shown in the combination Figure 4 Shown, multiple buffer grooves 220 are opened along the circumferential direction in fixed plate 22, and multiple groups of buffer grooves 220 are opened with the screw hole 211 that penetrates assembly plate 21 at the top position corresponding place, and adjusting member 23 is installed at the position corresponding screw hole 211;Adjusting member 23 includes the bolt 231 that is screw assembled with the inner wall of screw hole 211, and the bottom of bolt 231 is connected with multiple fixed columns 232, and the other end of fixed column 232 is connected with the circular fixed block 233 in buffer groove 220;Circular fixed block 233 is connected with buffer pad 234 on one side, and the other side of circular fixed block 233 is provided with buffer washer 235 that is sleeved in the outer ring of fixed column 232.
[0035] When the spring is subjected to external torque in the embodiment, the spring body 1 is twisted and deformed as the main structure, and the torque is transmitted to the connecting piece through the transition piece 2 at both ends. Among them, the transition piece 2 is divided into an assembly plate 21 and a fixed plate 22, the mounting hole 210 on the assembly plate 21 is used for assembly with the connecting piece, and a plurality of adjustment pieces 23 between the assembly plate 21 and the fixed plate 22 are connected through the threaded connection of the bolt 231 and the threaded hole 211. The bolt 231 can be rotated by means of a tool, driving the fixed column 232 and the circular fixing block 233 to move, so as to adjust the distance between the assembly plate 21 and the fixed plate 22. This operation can optimize the force transmission path of the spring, reduce the deflection torque caused by the asymmetric force arm in the traditional structure, reduce the stress concentration of the spring, thereby improving the stability of the torque transmission and the service life of the spring. During the rotation of the bolt 231 to adjust the distance between the assembly plate 21 and the fixed plate 22, the circular fixing block 233, the buffer pad 234 and the buffer washer 235 slide on the inner wall of the buffer groove 220. The combination of the buffer washer 235 and the buffer pad 234 can buffer the adjustment contact of the fixed column 232. In addition, the plurality of buffer grooves 220 circumferentially arranged in the fixed plate 22 are matched with the threaded holes 211 penetrating through the assembly plate 21, so that the adjustment piece 23 can be accurately installed and adjusted at different positions, realizing fine control of the spring torque and the strict requirement of high-precision application scenarios on torque feedback.
[0036] In cooperation with the surrounding components, the elastic rubber column 31 in the elastic piece 3 is installed in the inner ring of the spring body 1, and the elastic rubber disc 32 is embedded in the mounting groove on the side of the fixed plate 22. This structure design makes the elastic rubber disc 32 tightly fit in the contact end of the spring body 1 and the transition piece 2. When the environmental temperature changes or long-term use causes a gap between the spring and the mounting seat, the gap change can be compensated by adjusting the adjustment piece 23, adjusting the distance between the assembly plate 21 and the fixed plate 22 by the thread of the bolt 231, reducing the vibration transmission efficiency, and eliminating the abnormal noise caused by the gap.
[0037] The above specific embodiments are only one optional embodiment of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make a variety of alternative improvements and combinations to the above specific embodiments.
Claims
1. A high-sensitivity torsion spring for a vehicle, characterized by comprising: The utility model provides a spring body (1) and the transition piece (2) for being assembled with connecting piece are arranged at both ends of spring body (1), elastic member (3) is arranged between transition piece (2) and the end of elastic member (3), transition piece (2) includes assembly plate (21) and fixed plate (22), a plurality of adjusting members (23) for adjusting the distance between assembly plate (21) and fixed plate (22) are arranged between assembly plate (21) and fixed plate (22).
2. The high-sensitivity torsion spring for a vehicle according to claim 1, characterized by The elastic member (3) includes an elastic rubber column (31) mounted in the inner ring of the spring body (1) and an elastic rubber disc (32) mounted at one end of the elastic rubber column (31).
3. A high-sensitivity torsion spring for a vehicle according to claim 2, wherein The side of the fixed plate (22) connected with the elastic rubber disc (32) is provided with a mounting groove, the elastic rubber disc (32) is connected with the fixed plate (22) through the mounting groove, and the elastic rubber disc (32) is arranged in the contact end of the spring body (1) and the transition piece (2).
4. The high-sensitivity torsion spring for a vehicle according to claim 1, characterized by A plurality of buffer grooves (220) are circumferentially arranged in the fixed plate (22), a plurality of threaded holes (211) penetrating the assembly plate (21) are arranged at the top positions of the buffer grooves (220), and the adjusting members (23) are mounted at the positions of the threaded holes (211).
5. A high-sensitivity torsion spring for a vehicle according to claim 4, wherein A plurality of mounting holes (210) for assembling the connecting piece are circumferentially arranged on the assembly plate (21).
6. A high-sensitivity torsion spring for a vehicle according to claim 5, wherein The adjusting member (23) includes a bolt (231) screwed with the inner wall of the threaded hole (211), a plurality of fixed columns (232) are connected to the bottom of the bolt (231), and a circular fixed block (233) is connected to the other end of the fixed column (232) and arranged in the buffer groove (220).
7. The high-sensitivity torsion spring for a vehicle according to claim 6, characterized by A buffer pad (234) is connected to one side of the circular fixed block (233), and a buffer washer (235) is arranged on the outer ring of the fixed column (232) on the other side of the circular fixed block (233).