Automobile anti-roll bar stabilizer shaft compression spring structure and spring tooth bar extending structure

Abstract

The invention belongs to the technical field of automobile chassis, and particularly relates to an automobile anti-roll bar stabilizer shaft compression spring structure and a spring tooth bar extending structure which can effectively reduce side roll when an automobile turns and improve the straight running speed. The invention innovatively discloses an automobile anti-roll bar stabilizer shaft compression spring structure technology and a spring tooth bar extension structure technology. Under the action of a shaft, two compression springs with different outer diameters are attached together in parallel and interact with each other. Meanwhile, we accidentally find that the performance of the whole damper can be improved to a certain extent when the tail end of the middle shaft is sleeved with the spring, and the performance of the whole damper can be greatly influenced when the tooth rod is additionally arranged after the spring is sleeved. The shaft spring tooth rod extension technology plays a role in the linear acceleration capability of the vehicle.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile chassis, and particularly relates to a structure of an automobile anti-roll bar stabilizer shaft compression spring and a spring tooth bar extension structure which can effectively reduce vehicle roll when turning and improve straight driving speed. BACKGROUND

[0002] According to the technology provided in the patent CN2023214748671, there are damping springs outside, spring fixing rod outer tubes and inner rods inside, the inner rods form a composite telescopic structure with the springs inside the outer tubes, and connection damping is provided.

[0003] This technical description is not a problem, and the damping spring can work normally when stretched in practice, but when the spring is compressed to the lowest point by the vehicle during the contraction process, sometimes abnormal noise will occur. This phenomenon basically occurs when passing through a deceleration zone or when the road surface has a protrusion and the suspension is suddenly compressed, but it does not occur in all cases. In order to improve the driving experience, this problem also needs to be solved. SUMMARY

[0005] In view of the above problems, firstly, the gap between the spring ring is increased, the spring has a larger compression stroke, at this time, the wire diameter of the spring is increased to ensure the tension, the tension value and the compression are not bottomed out, and the comfort is also considered, it is difficult to find the appropriate wire diameter, number of turns and gap parameters, and the comfort will be reduced after the wire diameter is increased, the direction will be sinking when hitting the direction, so only another solution can be found. The spacer silicone block can be installed, but the durability is poor, and the buffer spring can be installed at the tail of the shaft, but the space is limited, the adjustable range is not large, and the durability is uncertain. After many experiments, the material is replaced, the structure is changed, and it is accidentally found that the shaft compression spring can improve the compression resistance of the damper, and there is no compression bottoming noise, but another problem is found, that is, after the shaft compression spring is added, the original outer damping spring and the shaft compression spring jointly act on the ups and downs and bumpy road, and the car head will have a slight shaking, which will make people feel dizzy. Analysis may be that the compression spring rebounds with excess bounce, so it is important to solve the problem of excess shaking. The shaft parallel double spring structure technology is innovated. That is, under the action of a shaft, two compression springs with different outer diameters are connected in parallel and closely together, and interact with each other. It can provide a certain spring force for the damper, and can also reduce the excess rebound of a single spring. The two parallel springs can be equal or unequal in length. The small spring is inside and the large spring is outside, or vice versa, the outer wall of the small spring ring is closely attached to the inner wall of the large spring ring, the small spring is compressed more when compressed, and the large spring is compressed when a certain distance is reached. When rebounding, the small spring rebounds more, and the large spring holds the small spring, reducing excess shaking. At the same time, the single spring can also achieve the expected effect on most flat roads. The equal-length spring has a poor direction hitting feel.

[0006] In addition, we accidentally found in the experiment that the damper with the shaft spring has greatly improved the anti-tilting performance of the entire damper. Because the patent CN2023214748671 does not provide a shaft spring, only the outer damping spring and the friction force between the inner rod of the spring fixing rod and the inner wall of the outer cylinder provide damping, and the friction force is obviously not enough, which is reflected in the vehicle that the left and right steering of the vehicle head is not as sensitive as now. After the shaft spring is installed, additional compression damping is provided to the entire damper, and the rebound speed of the outer damping spring is also increased. It is reflected in the vehicle that the left and right steering of the vehicle head is more sensitive. Moreover, the parallel spring and the single spring have such an effect.

[0007] In addition, we unexpectedly discovered in the experiment that installing a spring on the end of the intermediate shaft improves the linear performance of the entire damper to a certain extent. However, adding a toothed rod after installing the spring has a significant impact on the performance of the entire damper. The length of the toothed rod, the length of the spring, and the distance between the toothed rod and the intermediate shaft after installation can all cause significant changes in the performance of the entire damper. Therefore, finding the specific data range suitable for the vehicle is a problem that needs to be further solved.

[0008] To solve the above problems, we adopt the following technical solution: a car anti-roll bar stabilizer shaft compression spring structure, comprising an upper fixed cover, a long shaft spring, a short shaft spring, an intermediate shaft, and a lower fixed cover; wherein the long shaft spring and the short shaft spring are connected in parallel to form a composite spring structure, the upper fixed cover is not fixedly connected to the upper end of the composite spring, the lower fixed cover is connected to the lower end of the composite spring by a buckle or not, the long shaft spring and the short shaft spring are connected in parallel by a clamp, a fitting connection, a bushing connection, or not, and then the intermediate shaft passes through the middle.

[0009] Preferably, the parallel connection of the long shaft spring and the short shaft spring to form a composite spring structure can be used alone in an anti-roll bar stabilizer.

[0010] Preferably, the lower fixing cover has a snap fastener, which may or may not be fixedly connected to the lower end of the shaft composite spring. The diameter of the intermediate shaft is in the range of 2 mm to 20 mm, and the upper and lower ends of the intermediate shaft are threaded. The upper thread on the intermediate shaft extends downward to the guide opening of the lower fixing cover, and rubs against the guide opening of the lower fixing cover when the vehicle is moving, providing friction.

[0011] Preferably, the wire diameter of the long shaft spring and the short shaft spring is in the range of 0.2 mm to 5 mm, the inner diameter is in the range of 4 mm to 20 mm, and the length is less than 500 mm.

[0012] Preferably, the long spring and the short spring are springs with unequal coil spacing, equidistant compression springs, or variable diameter single springs.

[0013] Preferably, the long spring and the short spring are combined into a single spring, in which case the wire diameter of the single spring is in the range of 0.2 mm to 5 mm, and the inner diameter is in the range of 4 mm to 20 mm.

[0014] Preferably, the parallel double-spring composite structure can be used alone in the anti-roll bar damper.

[0015] Beneficial effects of the above technical solutions Our technical solution offers some improvement to the noise and anti-rollover performance of the CN2023214748671 anti-roll bar damper. It features a dual-spring composite structure: during tension, the spring is fixed vertically, while the shaft fixes the spring horizontally; during compression, it provides greater rebound in the vertical direction, with the shorter spring holding the longer spring in place.

[0016] In the composite structure of the two springs, most of the elastic force is provided by the long spring in the initial stage of compression. Gradually, the short spring begins to bear the force, and the longer the compression distance, the more force is borne by the short spring.

[0017] In a dual-spring composite structure, the wire diameter of the longer spring is generally set to be smaller than that of the shorter spring, or vice versa. When the springs rebound, the longer spring rebounds more, and the shorter spring is essentially pulling the longer spring, preventing the longer spring from having excessive bounce. This is beneficial to the overall comfort of the vehicle.

[0018] Therefore, the function of a short spring is to provide more elastic force when compressed, and to reduce the excessive bouncing of a long spring when it rebounds.

[0019] The composite structure with only a single spring can achieve the desired effect when using a single spring on most smooth road surfaces.

[0020] Both dual-spring composite structures and single-spring structures can solve abnormal noises during driving and make the steering of the front of the car more sensitive, which is directly reflected in the shortening of the vehicle's lane change time and the reduction of body roll.

[0021] The upper and lower ends of the intermediate shaft are threaded. The upper thread on the intermediate shaft extends downward, or the lower thread on the intermediate shaft extends upward, with no thread in the middle. When the vehicle is in motion, it rubs against the guide buckle of the lower fixed cover to provide friction.

[0022] In addition, this invention innovatively invented a shaft spring tooth rod extension structure.

[0023] An extension structure for a car anti-roll bar stabilizer spring rod is characterized by comprising an intermediate shaft, an shaft extension spring, and an extension rod, wherein the upper end of the shaft extension spring is fitted onto the lower end of the intermediate shaft and tightened for fixation, and the lower end of the shaft extension spring is fitted onto the rod and tightened for fixation.

[0024] Preferably, the diameter of the intermediate shaft is in the range of 2 mm to 20 mm, and the upper and lower ends of the intermediate shaft are threaded. The thread at the lower end of the intermediate shaft is tightly fitted with the inner wall of the coil of the lower spring, and the thread pitch of the intermediate shaft is the same as the pitch of the spring coil to form a screw thread for tightening and fixing.

[0025] Preferably, the wire diameter of the shaft extension spring is between 0.4 mm and 2 mm, and the length is between 3 mm and 200 mm, and it is a compression spring or a tension spring.

[0026] Preferably, the diameter of the toothed rod is in the range of 2 to 20 mm, the toothed rod has threads, and the helix of the shaft extension spring is tightly fitted and tightened with the threads on the toothed rod.

[0027] Preferably, the aforementioned shaft spring toothed rod extension structure must be used in conjunction with the shaft parallel double spring damping structure.

[0028] The beneficial effects of the above technical solution We tested a damper that only had an added shaft extension spring but no toothed rod. This structure did make the vehicle feel smoother than when it didn't have the spring, but it was only a feeling of smoothness and there was no fundamental change or change in the data.

[0029] Then, we tested the damper with added shaft extension springs and a locking rod. When the distance between the locking rod and the intermediate shaft was between 2 mm and 6 mm, the vehicle chassis felt very tight and stiff, essentially just an extension of the intermediate shaft. When the distance exceeded 6 mm, the overall chassis tightness was similar to that without the extension springs, but the vehicle started more nimbly, and the engine revs increased faster in the mid-to-high speed range. To investigate this, we conducted three 0-100 km / h straight-line acceleration tests. The times with and without this structure improved by 0.4 seconds, 0.5 seconds, and 0.7 seconds, respectively. This demonstrates the effectiveness of this structure.

[0030] For single-spring applications, this technical solution employs two approaches: a progressive spring with unequal coil spacing and a spring with equal coil spacing. While the first approach is not as effective as a composite spring, it still achieves a certain level of performance, and the parameter settings are relatively narrow. Furthermore, a larger proportion of the smaller coil spacing results in less excessive wobble. The second approach achieves the desired effect with thicker wire diameters, but comfort will be compromised.

[0031] The upper thread on the intermediate shaft extends downwards and rubs against the guide buckle of the lower fixing cover when the vehicle is in motion, providing friction.

[0032] In addition, the shaft-parallel double-spring damping structure is effective when used alone in the anti-roll bar damper, while the shaft spring toothed rod extension structure must be used in conjunction with the shaft-parallel double-spring damping structure to achieve better results. Attached Figure Description

[0033] Figure 1 A schematic diagram illustrating the structure of a compression spring on the shaft of an automotive anti-roll bar stabilizer. Figure 2 This diagram schematically illustrates the structure of an extended spring rod of a car anti-roll bar stabilizer shaft. Figure 3 This diagram schematically illustrates the combined application of a compression spring structure and a spring rod extension structure in an automotive anti-roll bar stabilizer. Figure 4 This diagram schematically illustrates the structure of an automotive anti-roll bar stabilizer shaft compression spring structure and a spring rod extension structure applied together. Figure 5This diagram schematically illustrates the structure of an automotive anti-roll bar stabilizer after removing the external damping spring, following the combined application of a compression spring structure and a spring rod extension structure. 1. Intermediate shaft 2. Upper fixed cover (also upper adapter rod) 3. Long shaft spring 4. Short shaft spring 5. Lower fixed cover (also spring fixing rod) outer cylinder inlet 6. Intermediate shaft 7. Shaft movable cavity (also spring fixing rod) outer cylinder 8. Upper end fixing clamp 9. Tooth rod 10. Fisheye bearing 11. Extension spring 12. Spring and lower fixed cover connecting clip 13. Short spring and long spring connecting clip 14. Damping spring 15. Adapter rod 16. Lower end fixing clamp Implementation

[0034] The embodiments of this technical solution will be further described below with reference to the accompanying drawings. The dimensions of the drawings are enlarged for ease of explanation and differ from the actual scale.

[0035] 1. A compression spring structure for an automotive anti-roll bar stabilizer shaft, comprising an upper fixed cover, a long shaft spring, a short shaft spring, an intermediate shaft, and a lower fixed cover; wherein the long shaft spring and the short shaft spring are connected in parallel to form a composite spring structure, the upper fixed cover is not fixedly connected to the upper end of the composite spring, the lower fixed cover is connected to the lower end of the composite spring by a clip or not, the long shaft spring and the short shaft spring are connected by a clamp, a fitted connection, a bushing connection, or not, and then the intermediate shaft passes through the middle. The wire diameter of the long shaft spring and the short shaft spring is in the range of 0.2 mm to 5 mm, the inner diameter is in the range of 4 mm to 20 mm, and the length is less than 500 mm. The long spring and the short spring are combined into a single spring, in which case the wire diameter of the single spring is in the range of 0.2 mm to 5 mm, and the inner diameter is in the range of 4 mm to 20 mm.

[0036] 2. A double-spring composite structure is constructed with a long spring (1 mm wire diameter, 9 mm outer diameter, 30 mm length, 8 coils, made of stainless steel) and a short spring (1 mm wire diameter, 9 mm inner diameter, 10 mm length, 4 coils, made of spring steel). The short spring is fitted onto the long spring, with the bottom edges aligned. Four alloy spring clamps are used to fix the composite spring in two layers at equal intervals. A Dacromet intermediate shaft passes through the center of the composite spring, and its upper end is connected to the upper fixing cap with a screw thread. The upper end of the composite spring is not fixedly connected to the upper fixing cap. The lower end of the composite spring is connected to the lower fixing cap with a snap-fit, and the lower end of the intermediate shaft passes through a hole in the lower fixing cap. The upper fixing cap has a diameter of 15 mm and a thickness of 10 mm. The lower fixing cap has a diameter of 15 mm and a thickness of 15 mm. Both the upper and lower fixing caps are made of stainless steel.

[0037] 3. The double-spring composite structure features a long spring with a wire diameter of 0.5 mm, an outer diameter of 5 mm, a length of 25 mm, and 7 coils; and a short spring with a wire diameter of 0.8 mm, an inner diameter of 5 mm, a length of 10 mm, and 4 coils. A carbon steel spring is fitted onto the long spring, with the bottom edges aligned. Four iron spring clamps are used to fix the springs in two layers at equal intervals, forming a composite spring. The intermediate shaft passes through the middle of the composite spring, and its upper end is connected to the upper fixing cover with a screw thread. The upper end of the composite spring is loosely connected to the upper fixing cover. The lower end of the composite spring is connected to the lower fixing cover with a snap-fit, and the lower end of the intermediate shaft passes through a hole in the lower fixing cover. The guide opening on the lower fixing cover has a diameter of 6 mm, which is larger than the diameter of the intermediate shaft (4 mm). The upper thread on the intermediate shaft extends downwards to the guide opening, providing friction against the guide buckle of the lower fixing cover during vehicle movement. The upper fixing cover has a diameter of 10 mm and a thickness of 6 mm. The lower fixing cover has a diameter of 8 mm and a thickness of 5 mm. Both the upper and lower fixing covers are made of aluminum alloy.

[0038] 4. A double-spring composite structure is used. The long spring has a wire diameter of 2 mm, an outer diameter of 10 mm, a length of 25 mm, and 7 coils. The short spring has a wire diameter of 3 mm, an inner diameter of 10 mm, a length of 15 mm, and 4 coils. Both are made of spring steel. The short spring is fitted over the long spring, with the bottom edges aligned, forming a composite spring. The intermediate shaft passes through the middle of the composite spring, and its upper end is connected to the upper fixing cover with a screw thread. The shaft material is stainless steel. The upper end of the composite spring is not fixedly connected to the upper fixing cover. The lower end of the composite spring is connected to the lower fixing cover with a snap-fit, and the lower end of the intermediate shaft passes through a hole in the lower fixing cover. The upper fixing cover has a diameter of 30 mm and a thickness of 15 mm. The lower fixing cover also has a diameter of 30 mm and a thickness of 15 mm. Both the upper and lower fixing covers are made of cast iron.

[0039] 5. A double-spring composite structure is used. The short spring has a wire diameter of 2 mm, an outer diameter of 10 mm, a length of 10 mm, and 4 coils. The long spring has a wire diameter of 3 mm, an inner diameter of 16 mm, a length of 25 mm, and 7 coils. The long spring is fitted onto the short spring, with the bottom edges aligned. Six spring fixing clamps are used to fix the composite spring in three layers at equal intervals. The central shaft passes through the middle of the composite spring, and its upper end is connected to the upper fixing cover with a screw thread. The upper end of the composite spring is not fixedly connected to the upper fixing cover. The lower end of the composite spring is connected to the lower fixing cover with a snap-fit, and the lower end of the central shaft passes through a hole in the lower fixing cover. The upper fixing cover has a diameter of 30 mm and a thickness of 15 mm. The lower fixing cover has a diameter of 30 mm and a thickness of 15 mm. Both the upper and lower fixing covers are made of aluminum alloy.

[0040] 6. A double-spring composite structure is used. The long spring has a wire diameter of 1 mm, an outer diameter of 8 mm, a length of 25 mm, and 7 coils. The short spring has a wire diameter of 1.2 mm, an outer diameter of 10 mm, and a length of 10 mm. The short spring is fitted onto the long spring, with the bottom edges aligned. Six spring clips are used to fix the composite spring in three layers at equal intervals. The central shaft passes through the middle of the composite spring, and its upper end is connected to the upper fixing cover with a screw thread. The upper end of the composite spring is not fixedly connected to the upper fixing cover. The lower end of the composite spring is connected to the lower fixing cover with a clip, and the lower end of the central shaft passes through a hole in the lower fixing cover. The upper fixing cover has a diameter of 16 mm and a thickness of 15 mm. The lower fixing cover has a diameter of 16 mm and a thickness of 15 mm. Both the upper and lower fixing covers are made of aluminum alloy.

[0041] 7. A double-spring composite structure is used. The long spring has a wire diameter of 3 mm, an inner diameter of 10 mm, a length of 35 mm, and 9 coils. The short spring has a wire diameter of 1.2 mm, an inner diameter of 16 mm, and a length of 18 mm. The short spring is fitted onto the long spring, with the bottom edges aligned. Three spring clips are used to fix the composite spring in three layers at equal intervals. The central shaft passes through the middle of the composite spring, and its upper end is connected to the upper fixing cover with a screw thread. The upper end of the composite spring is not fixedly connected to the upper fixing cover. The lower end of the composite spring is connected to the lower fixing cover with a clip, and the lower end of the central shaft passes through a hole in the lower fixing cover. The upper fixing cover has a diameter of 26 mm and a thickness of 15 mm. The lower fixing cover has a diameter of 26 mm and a thickness of 15 mm. Both the upper and lower fixing covers are made of stainless steel.

[0042] The 8-axis double-spring composite structure features a long spring with a wire diameter of 1 mm, an outer diameter of 8 mm, a length of 25 mm, and 7 coils. The short spring has a wire diameter of 1.2 mm, an inner diameter of 10 mm, a length of 10 mm, and 4 coils. The short spring is fitted over the long spring, with the bottom edges aligned, forming a composite spring. An intermediate shaft passes through the center of the composite spring, and its upper end is connected to the upper fixing cover with a screw thread. The upper end of the composite spring is not connected to the upper fixing cover. The lower end of the composite spring is not fixedly connected to the lower fixing cover, and the lower end of the intermediate shaft passes through a hole in the lower fixing cover. The upper fixing cover has a diameter of 24 mm and a thickness of 16 mm. The lower fixing cover has a diameter of 26 mm and a thickness of 18 mm. Both the upper and lower fixing covers are made of aluminum alloy.

[0043] 8. A double-spring composite structure with a long spring wire diameter of 1.2 mm, an outer diameter of 8 mm, a length of 26 mm, and 7 coils; and a short spring wire diameter of 1.4 mm, an inner diameter of 9 mm, and a length of 15 mm. The material is stainless steel. The short spring is fitted onto the long spring, with the bottom edges aligned. Six spring clips are used to fix the composite spring in four layers at equal intervals. The central shaft passes through the middle of the composite spring, and its upper end is connected to the upper fixing cap with a screw thread. The upper end of the composite spring is not fixedly connected to the upper fixing cap. The lower end of the composite spring is connected to the lower fixing cap with a snap-fit, and the lower end of the central shaft passes through a hole in the lower fixing cap. The upper fixing cap has a diameter of 16 mm and a thickness of 15 mm. The lower fixing cap has a diameter of 16 mm and a thickness of 15 mm. 9. A spring with varying diameter, using 1.2 mm wire, 8 coils, and a length of 26 mm. The top inner diameter is 9 mm, the fourth coil downwards has a diameter of 8 mm, and the eighth coil downwards has a diameter of 7 mm. A central shaft passes through the middle of the spring, and its upper end is connected to the upper fixing cap with a screw thread. The upper end of the spring is not fixedly connected to the upper fixing cap. The lower end of the spring is not fixedly connected to the lower fixing cap, and the lower end of the central shaft passes through a hole in the lower fixing cap. The upper fixing cap has a diameter of 16 mm and a thickness of 15 mm. The lower fixing cap has a diameter of 16 mm and a thickness of 15 mm. 10. Single-shaft spring, wire diameter 1.4 mm, 7 coils, length 26 mm, diameter 8 mm, material spring steel. An intermediate shaft passes through the center of the spring. The upper end of the intermediate shaft is connected to the upper fixing cap with a screw thread. The upper end of the spring is not fixedly connected to the upper fixing cap. The lower end of the spring is not fixedly connected to the lower fixing cap, and the lower end of the intermediate shaft passes through a hole in the lower fixing cap. The diameter of the guide opening on the lower fixing cap is 7 mm, which is larger than the diameter of the intermediate shaft (5 mm). The upper thread on the intermediate shaft extends downwards to the guide opening, providing friction by rubbing against the guide buckle of the lower fixing cap during vehicle movement. The upper fixing cap is 15 mm in diameter and 16 mm thick. The lower fixing cap is 16 mm in diameter and 15 mm thick. 11. Single-shaft spring, wire diameter 0.6 mm, 9 turns, length 20 mm, diameter 7 mm, material carbon steel. The intermediate shaft passes through the center of the spring, and its upper end is connected to the upper fixing cap with a screw thread. The upper end of the spring is not fixedly connected to the upper fixing cap. The lower end of the spring is not fixedly connected to the lower fixing cap with a snap-fit, and the lower end of the intermediate shaft passes through a hole in the lower fixing cap. The upper fixing cap has a diameter of 15 mm and a thickness of 16 mm. The lower fixing cap has a diameter of 16 mm and a thickness of 15 mm. 12. Single-shaft spring, wire diameter 2.2 mm, length 20 mm, diameter 10 mm, 6 coils, material stainless steel. The intermediate shaft passes through the center of the spring. The upper end of the intermediate shaft is connected to the upper fixing cap with a screw thread, while the upper end of the spring is not fixedly connected to the upper fixing cap. The lower end of the spring is not fixedly connected to the lower fixing cap with a snap-fit, and the lower end of the intermediate shaft passes through a hole in the lower fixing cap. The upper fixing cap has a diameter of 15 mm and a thickness of 16 mm. The lower fixing cap has a diameter of 16 mm and a thickness of 15 mm. 13. Application of a double-spring composite structure. The composite structure uses a long spring steel wire with a diameter of 1 mm, an outer diameter of 8 mm, a length of 25 mm, and 7 coils. The short spring steel wire has a diameter of 1.2 mm, an inner diameter of 8 mm, a length of 10 mm, and 4 coils. The short spring is fitted onto the long spring, with the bottom edges aligned. Three steel spring clamps are used for equidistant fixing to form a composite spring. A stainless steel intermediate shaft (M5 screw) passes through the middle of the composite spring. The upper end of the intermediate shaft is connected to the upper fixed cover (the upper adapter rod) with a screw thread. The upper end of the composite spring is not fixedly connected to the upper fixed cover. The lower end of the composite spring is connected to the upper end of the lower fixed cover (the outer cylinder of the spring fixing rod) with a snap-fit. The lower end of the M5 intermediate shaft enters from the inlet of the lower fixed cover (the outer cylinder of the spring fixing rod). The guide opening on the lower fixing cover has a diameter of 7 mm, which is larger than the diameter of the intermediate shaft (5 mm). The upper thread on the intermediate shaft extends downward to the guide opening, providing friction by rubbing against the guide buckle of the lower fixing cover during vehicle movement. The upper fixing cover, which is also the adapter rod, has a diameter of 16 mm and a thickness of 15 mm. The outer cylinder of the spring fixing rod has a diameter of 12 mm, a length of 72 mm, and a guide opening diameter of 8 mm; it is made of aluminum alloy. The lower end of the outer cylinder of the spring fixing rod is connected to the adapter rod. The damping spring is mounted on the composite structure of the shaft composite spring and the outer cylinder of the spring fixing rod. The upper and lower ends are fixed by the adapter rods, and then the adapter rods are connected to the fisheye bearings. The fisheye bearings are connected to the upper and lower fixing clamps. The upper and lower fixing clamps are made of aluminum alloy; the inner diameter of the upper fixing clamp ranges from 7 mm to 10 mm, and the inner diameter of the lower fixing clamp ranges from 17 mm to 22 mm.

[0044] 14. Verify the function and structure of a car anti-roll bar stabilizer shaft compression spring and spring rod extension structure through a moose test. Taking a BMW 325 model as an example, install the anti-roll bar damper with patent CN2023214748671. The outer damping spring has a wire diameter of 2.0 mm, 33 coils, an inner diameter of 15 mm, and a length of 78 mm. The material is spring steel. One end is fitted onto the anti-roll bar hanger, and the other end is fitted onto the anti-roll bar. First, perform a lane change test at an initial speed of 82 km / h (the speed at which you enter the test area). The test is then completed. Now, using the same BMW 325 model, the front suspension on both sides is fitted with the damper shown in Figure 4, which has an anti-roll bar stabilizer shaft compression spring structure and spring rod extension structure. The long spring steel spring has a wire diameter of 1 mm, an outer diameter of 8 mm, a length of 25 mm, and 7 coils. The short spring steel spring has a wire diameter of 1.2 mm, an inner diameter of 8 mm, a length of 10 mm, and 4 coils. The external damping spring has a wire diameter of 2.0 mm, 33 coils, an inner diameter of 16 mm, and a length of 78 mm. The extension spring is 30 mm long, and the M5 threaded rod is 5 mm long. The diameter of the guide opening on the lower fixed cover is 7 mm, which is larger than the diameter of the intermediate shaft (5 mm). The upper thread on the intermediate shaft extends downward to the guide opening. The test was completed at an initial speed of 85 km / h. Comparison before and after the test shows that our anti-roll bar damping structure effectively shortens the test time at the same initial speed, indicating a faster chassis response and more agile cornering. It effectively reduces the reaction time of the original damper, and our damper can better synchronize with the vehicle body.

[0045] 15. A parallel double-spring composite structure includes an upper fixed cover, a long spring, a short spring, an intermediate shaft, and a lower fixed cover. The upper fixed cover is not fixedly connected to the upper end of the long spring, while the lower fixed cover is snapped to the lower end of the long spring. The long and short springs are connected in parallel using clamps, fittings, bushings, or not connected at all. The intermediate shaft passes through the middle. Simultaneously, a novel shaft spring threaded rod extension structure includes an intermediate shaft, a shaft extension spring, and an extension threaded rod. The upper end of the shaft extension spring is fitted onto the lower end of the intermediate shaft and tightened with threads. The lower end of the shaft extension spring is fitted onto the threaded rod and tightened. The shaft extension spring has a wire diameter between 0.4 mm and 2 mm and a length between 3 mm and 100 mm, and is either a compression spring or a tension spring. The long spring has a wire diameter of 0.8 mm, an outer diameter of 8 mm, and a length of 30 mm. The short spring has a wire diameter of 1.2 mm, an inner diameter of 8 mm, and a length of 12 mm. The intermediate shaft is an M5 threaded rod. The extension spring wire is 0.5 mm in diameter, 5 mm in outer diameter, and 25 mm in length. The extension rod is M5 and 5 mm in length.

[0046] 16. A shaft spring extension rod structure is used, with the extension rod being M4 and 5 mm in length. The extension spring wire diameter is 0.5 mm, the inner diameter is 4 mm, and the length is 30 mm. The upper end of the extension spring is tightened to the lower end of the intermediate shaft. After tightening, the combined part of the intermediate shaft and the extension spring does not contact the inlet edge of the spring fixing rod outer cylinder to reduce friction. The extension rod is screwed into the lower end of the extension spring, with the ends flush.

[0047] 17. The extension spring of the shaft spring rod extension structure has a wire diameter of 0.6 mm, an outer diameter of 5.2 mm, and a length of 28 mm. It is a compression spring. The extension rod is M4 and 6 mm in length. The upper end of the extension spring is tightened to the lower end of the intermediate shaft. After tightening, the combined part of the intermediate shaft and the extension spring does not contact the inlet edge of the spring fixing rod outer cylinder to reduce friction. The extension rod is screwed into the lower end of the extension spring, with the ends flush.

[0048] 18. The extension spring of the shaft spring rod extension structure has a wire diameter of 2 mm, an inner diameter of 4.5 mm, and a length of 100 mm. It is a tension spring. The extension rod is M5 and 8 mm long. The upper end of the extension spring is tightened to the lower end of the intermediate shaft. After tightening, the combined part of the intermediate shaft and the extension spring does not contact the inlet edge of the shaft's moving cavity to reduce friction. The extension rod is screwed into the lower end of the extension spring, with the ends flush.

[0049] 19. A shaft-parallel double-spring composite structure and a shaft spring toothed rod extension structure. Figure 3 The long spring has a wire diameter of 1 mm, an outer diameter of 8 mm, a length of 28 mm, and 8 coils. The short spring has a wire diameter of 1.2 mm, an inner diameter of 8 mm, a length of 15 mm, and 5 coils. Both are made of spring steel. The short spring is fitted onto the long spring, with the bottom edges aligned. Four alloy spring clamps are used to fix the springs in two layers at equal intervals, forming a composite spring. A Dacromet intermediate shaft passes through the center of the composite spring, and the upper end of the intermediate shaft is connected to the upper fixing cap with a screw thread. The upper end of the composite spring is not connected to the upper fixing cap. The lower end of the composite spring is not connected to the lower fixing cap, and the lower end of the M5 intermediate shaft passes through a hole in the lower fixing cap. The upper fixing cap has a diameter of 18 mm and a thickness of 10 mm. The lower fixing cap has a diameter of 15 mm and a thickness of 10 mm. Both the upper and lower fixing caps are made of stainless steel. The extension spring in the extension structure has a wire diameter of 0.7 mm, an outer diameter of 5.4 mm, and a length of 30 mm. The extension rod is M5 and 10 mm long. The upper end of the extension spring is tightened to the lower end of the intermediate shaft. After tightening, the combined part of the intermediate shaft and the extension spring does not contact the inlet edge of the spring fixing rod outer cylinder to reduce friction. The extension rod is screwed into the lower end of the extension spring, with the ends flush. 20. An overall structure for the combined application of a shaft parallel double spring composite structure and a shaft spring toothed rod extension structure. Figure 4The upper fixing hoop has an inner diameter of 9 mm. The H-arm on the fixing hoop connects to a fisheye bearing. The fisheye bearing rod is M4, and the fisheye hole diameter is 5 mm. The upper fixing cover of the fisheye bearing connecting shaft and parallel double spring damping structure is the adapter rod. One end of the adapter rod connects to the M4 fisheye bearing rod, and the other end connects to the M5 screw rod. The screw rod is 60 mm long. The adapter rod also connects to a damping spring with a wire diameter of 2.1 mm, a length of 76 mm, and 31 turns. This does not include the spring fixing hook, which is 15 mm long. The long spring fitted on the screw rod has a wire diameter of 1 mm, an outer diameter of 8 mm, a length of 24 mm, and 7 turns. It is made of stainless steel. The short spring has a wire diameter of 1.2 mm, an inner diameter of 8 mm, a length of 15 mm, and 5 turns. It is made of stainless steel. A short spring is fitted onto a long spring, with the bottom edges aligned. Four alloy spring clamps are used in two layers, equidistantly connected, to form a composite spring. A Dacromet intermediate shaft passes through the middle of the composite spring. The upper end of the intermediate shaft screw is connected to the upper fixing cap with a screw thread, while the upper end of the composite spring is not connected to the upper fixing cap. The lower end of the composite spring is not connected to the outer cylinder of the spring fixing rod. The lower end of the intermediate shaft M5 screw is inserted into the outer cylinder of the spring fixing rod. The outer cylinder of the spring fixing rod is 72 mm long, with an outer diameter of 12 mm and a guide port inner diameter of 6 mm. The thread at the upper end of the M5 intermediate shaft extends to the inlet of the outer cylinder of the spring fixing rod. The lower end of the outer cylinder has an M4 screw for connecting an adapter rod, or a bidirectional M4 adapter rod can be used. The extension structure is inside the outer cylinder of the spring fixing rod. The extension spring wire diameter of the extension structure is 0.5 mm, the outer diameter is 5 mm, and the length is 30 mm. It is a tension spring. The extension rod is M5 and 10 mm long. The upper end of the extension spring is tightened to the lower end of the intermediate shaft M5 screw. After tightening, the combined part of the intermediate shaft and the extension spring does not contact the edge of the shaft moving cavity, i.e., the inlet guide of the spring fixing rod outer cylinder, to reduce friction. The extension rod is screwed into the lower end of the extension spring, with the ends flush. The lower end of the spring fixing rod outer cylinder is an M4 adapter rod, connecting the spring fixing rod outer cylinder and the fisheye bearing, and simultaneously fixing the lower end spring fixing hook of the damping spring. The fisheye bearing model is the same as the upper end. The fisheye bearing is connected to the lower end fixing hoop H arm, and the inner diameter of the lower end fixing hoop is 22 mm.

[0050] 21. An overall structure for the application of a parallel double-spring composite structure. The upper fixing hoop has an inner diameter of 9.5 mm. The H-arm on the fixing hoop connects to a fisheye bearing. The fisheye bearing rod is M4, and the fisheye hole diameter is 4 mm. The fisheye bearing connects to the upper fixing cover of the parallel double-spring damping structure, which is also the adapter rod. One end of the adapter rod connects to the M4 fisheye bearing rod, and the other end connects to an M5 screw rod. The screw rod is 68 mm long. The adapter rod also connects to an external damping spring with a wire diameter of 2.0 mm, a length of 78 mm, and 32 turns, excluding the spring fixing hook, which is 15 mm long. The long spring, fitted onto the screw rod, has a wire diameter of 1.1 mm, an outer diameter of 8 mm, a length of 26 mm, and 7 turns. It is made of spring steel. The short spring has a wire diameter of 1.2 mm, an inner diameter of 8 mm, a length of 10 mm, and 4 turns. It is made of spring steel. A short spring is fitted onto a long spring, with the bottom edges aligned. Three alloy spring clamps are used to fix the springs at equal intervals, forming a composite spring. A Dacromet intermediate shaft passes through the center of the composite spring. The upper end of the intermediate shaft screw is connected to the upper fixing cap with a screw thread. The upper end of the composite spring is not connected to the upper fixing cap (adapter rod). The lower end of the composite spring is not connected to the spring fixing rod. The lower end of the intermediate shaft M5 screw is inserted into the spring fixing rod. The spring fixing rod is 72 mm long, 12 mm in outer diameter, and has a 6 mm inner diameter guide opening. An M4 screw is located at the lower end of the outer cylinder of the fixing rod to connect to a fisheye bearing. An M4 adapter rod connects the lower end of the spring fixing rod's outer cylinder, connecting the spring fixing rod and the fisheye bearing. This adapter rod also fixes the lower end spring fixing hook of the damping spring. The fisheye bearing is the same model as the upper one. The fisheye bearing connects to the lower fixing clamp H-arm, which has an inner diameter of 24 mm.

[0051] 22. Verify the function of a car anti-roll bar stabilizer shaft compression spring structure and spring rod extension structure through a straight-line acceleration test. Take a BMW 325 model as an example. Install the anti-roll bar damper (patent CN2023214748671), with an external damping spring wire diameter of 2.0 mm, spring length of 78 mm, number of coils of 33, and material of spring steel. One end is fitted onto the anti-roll bar hanger, and the other end is fitted onto the anti-roll bar itself. The test is conducted in an open and safe test track. The time from 0 to 100 km / h is measured. The vehicle test time is 7.5 seconds. (Based on...) Figure 4After installing our composite damper structure, which combines the shaft spring extension structure and the shaft compression spring structure, the long spring steel has a wire diameter of 1.2 mm, an outer diameter of 8 mm, and a length of 25 mm. The short spring is made of 304 stainless steel with a wire diameter of 1.2 mm, an inner diameter of 8 mm, and a length of 10 mm. The long and short springs are fitted together. The outer damping spring has a wire diameter of 2.0 mm, a spring length of 78 mm, 33 coils, an inner diameter of 16 mm, and is made of spring steel. The shaft is M5, with the thread at the upper end of the M5 intermediate shaft extending to the inlet of the spring fixing rod outer cylinder. The extension spring has an outer diameter of 5 mm, a wire diameter of 0.5 mm, and a length of 30 mm. It is a tension spring, and the extension rod is M4 with a length of 4 mm. The test times were 7.1 seconds, 7.2 seconds, and 7.1 seconds, respectively, representing improvements of 0.4 seconds and 0.3 seconds. This indicates that our composite damping structure can improve the vehicle's straight-line acceleration after installation.

[0052] 23. An overall structure for the application of a single-spring damping structure. The upper fixing hoop has an inner diameter of 9.5 mm. An H-arm on the fixing hoop connects to a fisheye bearing. The fisheye bearing rod is M4, and the fisheye hole diameter is 4 mm. The fisheye bearing connects to the upper fixing cap of the single-spring damping structure, which is also the adapter rod. One end of the adapter rod connects to the M4 fisheye bearing rod, and the other end connects to an M5 screw rod. The screw rod is 68 mm long. The adapter rod also connects to a damping spring with a wire diameter of 2.1 mm, a length of 78 mm, and 33 turns (excluding the spring fixing hook, which is 15 mm long). The single spring, fitted onto the screw rod, has a wire diameter of 1.2 mm, an outer diameter of 8 mm, a length of 25 mm, and 8 turns. The material is spring steel. A Dacromet intermediate shaft passes through the middle of the single spring. The upper end of the intermediate shaft screw rod is connected to the upper fixing cap with a screw thread. The upper end of the single spring is not fixedly connected to the upper fixing cap (adapter rod). The lower end of the single spring is not fixedly connected to the spring fixing rod. The lower end of the intermediate shaft M5 screw rod is inserted into the spring fixing rod. The thread at the upper end of the M5 intermediate shaft extends to the inlet of the outer cylinder of the spring fixing rod. The spring fixing rod is 72 mm long, 12 mm in outer diameter, and has an inner diameter of 6 mm for the guide opening. An M4 screw is located at the lower end of the outer cylinder of the fixing rod to connect to the adapter rod. The lower end of the outer cylinder of the spring fixing rod connects to the M4 adapter rod, which connects the spring fixing rod and the fisheye bearing. It also secures the lower end spring fixing hook of the damping spring. The fisheye bearing is the same type as the upper end, and it connects to the lower fixing clamp H-arm. The lower fixing clamp has an inner diameter of 24 mm.

[0053] 24. Verify the effect of a parallel double-spring composite structure in a car moose test. Install the anti-roll bar damper (patent CN2023214748671), with an external damping spring wire diameter of 2.0 mm, spring length of 78 mm, number of coils of 33, and material of spring steel. One end is fitted onto the anti-roll bar hanger, and the other end is fitted onto the anti-roll bar. The initial speed is 82 km / h, and the test is completed. This is still the same BMW 325 model, only the dual front suspensions are fitted with... Figure 4A novel shaft-parallel double-spring damping structure damper was assembled. The long spring steel spring has a wire diameter of 1.2 mm, an outer diameter of 8 mm, and a length of 25 mm. The short spring is made of 304 stainless steel with a wire diameter of 1.2 mm, an inner diameter of 8 mm, and a length of 10 mm. The long and short springs are assembled together. The outer damping spring has a wire diameter of 2.0 mm, a spring length of 78 mm, and 33 coils. The thread at the upper end of the M4 intermediate shaft extends to the inlet of the outer cylinder of the spring fixing rod. The material, spring steel, was tested at an initial speed of 86 km / h. Comparison before and after testing shows that our technical solution, the shaft-parallel double-spring damping structure, can effectively improve cornering speed, make turning more agile, and effectively reduce the reaction time of the original damper.

[0054] 25. Verify the effect of a single-spring damping structure in a car moose test. Taking a BMW 325 model as an example, install the anti-roll bar damper (patent CN2023214748671), with an outer damping spring wire diameter of 2.0 mm, spring length of 78 mm, number of coils of 33, inner diameter of 16 mm, and material of spring steel. One end is fitted onto the anti-roll bar hanger, and the other end is fitted onto the anti-roll bar. The vehicle enters the test area at an initial speed of 82 km / h and completes the test. Now, using the same BMW 325 model, but with the front suspension fitted with a single-spring damping structure on both sides... Figure 4 A novel single-spring damping structure damper was assembled. The outer spring wire has a diameter of 2 mm, a length of 78 mm, 33 coils, and an inner diameter of 16 mm. The thread at the upper end of the M4 intermediate shaft extends to the inlet of the outer cylinder of the spring fixing rod. The shaft spring steel wire has a diameter of 1.4 mm, an outer diameter of 10 mm, and a length of 20 mm. The device entered the test area at an initial speed of 86 km / h and completed the test. This demonstrates that our technical solution can effectively improve the vehicle's anti-roll capability.

[0055] 26. Verify the effect of a parallel double-spring composite structure in a car straight-line test, using a BMW 325 as an example. Install a patented anti-roll bar damper (CN2023214748671), with an external damping spring wire diameter of 2.0 mm, a spring length of 78 mm, 33 coils, and made of spring steel. One end is fitted onto the anti-roll bar hanger, and the other end is fitted onto the anti-roll bar itself. The test is conducted in an open and safe test area. The time taken to accelerate from 0 to 100 km / h is recorded. The vehicle test time is 7.5 seconds. (Based on...) Figure 4 Only our parallel double-spring damping structure damper was installed. The long spring steel spring has a wire diameter of 1.2 mm, an outer diameter of 8 mm, and a length of 25 mm. The short spring is made of 304 stainless steel with a wire diameter of 1.2 mm, an inner diameter of 8 mm, and a length of 10 mm. The long and short springs are assembled together. The outer damping spring has a wire diameter of 2.0 mm, a spring length of 78 mm, 33 coils, an inner diameter of 16 mm, and is made of spring steel. The thread at the upper end of the M4 intermediate shaft extends to the inlet of the outer cylinder of the spring fixing rod. The test times were 7.4 seconds, 7.2 seconds, and 7.3 seconds, indicating that our composite damping structure can improve the vehicle's straight-line acceleration after installation.

[0056] 27. A straight-line test of a car using a single-spring damping structure to verify its function was conducted, taking a BMW 325 model as an example. A patented anti-roll bar damper (CN2023214748671) was installed. The external damping spring had a wire diameter of 2.0 mm, a spring length of 78 mm, 33 coils, and was made of spring steel. One end was fitted onto the anti-roll bar hanger, and the other end onto the anti-roll bar itself. The test was conducted in a safe, open test area. The time taken to accelerate from 0 to 100 km / h was measured. The vehicle test time was 7.5 seconds. According to... Figure 4 The damper, featuring our parallel dual-spring damping structure, consists of a long spring steel wire with a diameter of 1.2 mm, an outer diameter of 8 mm, and a length of 25 mm. The short spring is made of 304 stainless steel with a wire diameter of 1.2 mm, an inner diameter of 8 mm, and a length of 10 mm. The long and short springs are fitted together. The outer damping spring has a wire diameter of 2.0 mm, a spring length of 78 mm, 33 coils, and an inner diameter of 16 mm. It is made of spring steel, and the thread on the upper end of the M4 intermediate shaft extends to the inlet of the outer cylinder of the spring fixing rod. Test times were 7.3 seconds, 7.2 seconds, and 7.3 seconds, indicating that our composite damping structure can improve the vehicle's straight-line acceleration after installation.

Claims

1. A compression spring structure for an automotive anti-roll bar stabilizer shaft, characterized in that: It includes an upper fixed cover, a long shaft spring, a short shaft spring, an intermediate shaft, and a lower fixed cover; the long shaft spring and the short shaft spring are connected in parallel to form a composite spring structure. The upper fixed cover is not fixedly connected to the upper end of the composite spring. The lower fixed cover is connected to the lower end of the composite spring by a buckle or not. The long shaft spring and the short shaft spring are connected in parallel by a clamp, a fitting connection, a bushing connection, or not. Then the intermediate shaft passes through the middle.

2. A spring rod extension structure for an automotive anti-roll bar stabilizer, characterized in that: It includes an intermediate shaft, a shaft extension spring, and an extension rod; wherein the upper end of the shaft extension spring is fitted onto the threaded part of the lower end of the intermediate shaft and tightened for fixation, and the lower end of the shaft extension spring is fitted onto the threaded part of the rod and tightened for fixation.

3. The automobile anti-roll bar stabilizer shaft compression spring structure according to claim 1, characterized in that: The aforementioned long-axis spring and short-axis spring connected in parallel to form a composite spring structure can be used alone in anti-roll bar stabilizers.

4. The automobile anti-roll bar stabilizer shaft compression spring structure according to claim 1, characterized in that: The lower fixed cover has a snap fastener, which can be fixedly connected to or not fixedly connected to the lower end of the shaft composite spring. The diameter of the intermediate shaft is in the range of 2 mm to 20 mm. The upper and lower ends of the intermediate shaft are threaded. The upper thread on the intermediate shaft extends downward to the guide opening of the lower fixed cover, which rubs against the guide opening of the lower fixed cover when the vehicle is moving, providing friction.

5. The automobile anti-roll bar stabilizer shaft compression spring structure according to claim 1, characterized in that: The wire diameter of the long shaft spring and the short shaft spring ranges from 0.2 mm to 5 mm, the inner diameter ranges from 4 mm to 20 mm, and the length is less than 500 mm.

6. The automobile anti-roll bar stabilizer shaft compression spring structure according to claim 1, characterized in that: The long spring and short spring mentioned are springs with unequal coil spacing, equidistant compression springs, or variable diameter single springs.

7. The automobile anti-roll bar stabilizer shaft compression spring structure according to claim 1, characterized in that: The long spring and short spring are combined into one spring, and the wire diameter of the single spring is in the range of 0.2 mm to 5 mm, and the inner diameter is in the range of 4 mm to 20 mm.

8. The automobile anti-roll bar stabilizer spring rod extension structure according to claim 2, characterized in that: The diameter of the intermediate shaft is in the range of 2 mm to 20 mm. The upper and lower ends of the intermediate shaft are threaded. The thread at the lower end of the intermediate shaft is tightly fitted with the inner wall of the coil of the lower spring. The thread pitch of the intermediate shaft is the same as the pitch of the spring coil to form a screw thread for tightening and fixing.

9. The automobile anti-roll bar stabilizer spring rod extension structure according to claim 2, characterized in that: The aforementioned shaft extension spring has a wire diameter between 0.4 mm and 2 mm and a length between 3 mm and 200 mm, and is either a compression spring or a tension spring.

10. The automobile anti-roll bar stabilizer spring rod extension structure according to claim 2, characterized in that: The diameter of the toothed rod is in the range of 2 to 20 mm. The toothed rod has threads, and the helix of the shaft extension spring is tightly fitted and tightened with the threads on the toothed rod.

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