Novel automobile anti-roll bar damper

Abstract

The utility model particularly relates to a novel automobile anti-roll bar damper which can effectively reduce side roll when an automobile turns and improve the linear driving quality. The damper comprises a damping spring, a left end fixing hoop and a right end fixing hoop, and dynamic damping is adjusted through stretching out and drawing back. The damper is directly connected with a chassis anti-roll bar through the damping spring and one end of the fixing hoop, the other end of the damper is directly connected with an anti-roll bar suspender or connected with a lower straight arm or a lower bent arm or a nearby fixing point, and the angle change and vibration of the anti-roll bar are reduced when a vehicle moves by reinforcing the connection damping of the anti-roll bar and the anti-roll bar suspender or the lower swing arm; the stability of the anti-roll rod during movement is improved on the whole, the purpose of reducing side roll of the vehicle during turning is achieved, and meanwhile the comfort of the vehicle during straight driving is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile chassis, and in particular relates to a novel automobile anti-roll bar damper which can effectively reduce the body roll when the vehicle is cornering and improve the straight-line driving quality. Background Art

[0002] The chassis anti-roll bar is an important part of the automobile suspension system. The anti-roll bar is also called a lateral stabilizer bar, which has a great influence on the handling of the car. The two ends of the anti-roll bar are connected to the suspension rocker arms. When the car body rolls, the anti-roll bar will twist and generate feedback force in the opposite direction to control the roll of the car body. Therefore, the anti-roll bar is actually a twisting spring. When the car turns, the centrifugal force causes the body to roll, causing the suspension of the inner wheel of the curve to stretch and the suspension of the outer wheel of the curve to compress, causing the rod of the anti-roll bar to twist. The function of the anti-roll bar is to use the rebound force generated by the twisted rod body to suppress the roll of the car body.

[0003] The existing automobile suspension design generally connects the anti-roll bar with the anti-roll bar hanger, and the anti-roll bar hanger is connected to the shock absorber tube or chassis swing arm, so that the connection force generated can suppress the angle change of the anti-roll bar. The anti-roll bar and the anti-roll bar hanger are generally connected with a ball head. The advantage of this connection is that it allows the vehicle to have a certain roll and facilitates the movement of the vehicle in non-linear directions. However, the use of a ball head connection also has side effects, because the ball head is relatively fragile after all, and the limit strength of a new part is not high. It is easy to loosen after a period of use, resulting in insufficient connection strength between the anti-roll bar hanger and the anti-roll bar, and the anti-roll bar's role in reducing roll becomes weak. Therefore, increasing the connection strength of the anti-roll bar, increasing the stability of the anti-roll bar, reducing the angle change and vibration of the anti-roll bar when the vehicle is running, reducing the cornering roll, and improving the straight-line driving quality are the problems we need to solve. In addition, while solving the above problems, the weight of the technical solution structure must also be taken into account, because the anti-roll bar and the anti-roll bar hanger are both in the chassis part of the car, and excessive increase in the weight of the chassis will inevitably affect the performance of the vehicle when driving or driving at high speed. Summary of the invention

[0004] In view of the deficiencies and gaps in the prior art, the present invention is no longer limited to the continuous strengthening of the anti-roll bar and the anti-roll bar suspension rod ball head in the prior art, but innovatively connects the anti-roll bar and the anti-roll bar suspension rod with a damper, or connects the anti-roll bar with the lower straight arm or curved arm or other fixed points of the chassis, so as to increase the connection force and achieve the purpose of reducing the angle change when the anti-roll bar moves. The present invention provides a new type of automobile anti-roll bar damper, which can adjust the dynamic damping by telescoping. The damper is directly connected to the chassis anti-roll bar through one end of the damping spring and the fixing hoop, and the other end is directly connected to the anti-roll bar suspension rod or the lower straight arm or lower curved arm or the nearby fixed point. By strengthening the connection damping between the anti-roll bar and the anti-roll bar suspension rod or the lower swing arm, the angle change and vibration of the anti-roll bar when the vehicle moves are reduced, and the stability of the anti-roll bar when moving is generally increased, so as to achieve the purpose of reducing the roll of the vehicle when cornering, and at the same time improve the comfort of the vehicle when driving in a straight line.

[0005] In order to achieve the above goals, we adopt the following technical solutions.

[0006] A novel automobile anti-roll bar damper comprises a damping spring, a left-end fixing hoop and a right-end fixing hoop, wherein the left-end fixing hoop on the left-end fixing hoop is bolted to the left-end fixing ring of the damping spring, and the right-end fixing hoop on the right-end fixing hoop is bolted to the right-end fixing ring of the damping spring. After the damping spring is connected to the fixing hoops at both ends, a telescopic structure is formed.

[0007] Preferably, the damping spring includes three settings, a two-end neck spring, a middle neck spring and a single-side neck spring. The length of the spring is between 3 mm and 550 mm, the wire diameter is in the range of 0.1 mm to 20 mm, and the inner diameter is in the range of 2 mm to 100 mm. The telescopic structure composed of the fixing hoops at both ends and the damping spring increases damping when stretched and returns to the initial position when contracted.

[0008] Preferably, the left-end fixing hoop and the right-end fixing hoop are annular or U-shaped fixing hoops, the radius of the fixing hoop ring is between 2 mm and 80 mm, the length of the U-shaped fixing hoop is between 2 mm and 150 mm, and the width is between 5 mm and 150 mm. One end of the anti-roll bar damper is fixed to the anti-roll bar of the car, and the other end is fixed to the anti-roll bar hanger, or fixed to the suspension straight arm bent arm or fixed point near the anti-roll bar.

[0009] In addition, the proportion of the length of the middle spring coil portion of the two-end neck spring to the total length of the spring is not less than 80%, the proportion of the length of the middle spring coil portion of the middle neck spring to the total length of the spring is not higher than 80% (inclusive) and not lower than 40% (inclusive), and the proportion of the length of the single-side spring coil portion of the single-side neck spring to the total length of the spring is not higher than 40%.

[0010] The above technical solution has the following beneficial effects:

[0011] Our technical solution innovatively solves the problem of insufficient strength of the connection between the anti-roll bar and the suspension, dynamically strengthens the connection damping between the anti-roll bar and the anti-roll bar hanger or lower arm, and generally increases the stability of the anti-roll bar during movement. The telescopic structure of the spring fixing hoop and the damping spring strengthens the connection strength between the anti-roll bar and the suspension. When the body rolls, the spring telescopic structure on one side becomes longer and the damping becomes larger, achieving the effect of reducing the angle of the anti-roll bar. When the body is straightened, it returns to the set initial position due to the elastic properties of the technical structure.

[0012] The design of directly connecting the left-end fixing hoop and the right-end fixing hoop to the damping spring not only simplifies the steps, but also reduces the weight of the entire regulator, thereby minimizing the impact of the weight on the chassis when the regulator moves.

[0013] Using two-end neck springs, middle neck springs and single-side neck springs, and different spring line neck a and c and coil ratio designs, the straight line a and c parts of the spring can be increased as much as possible, the coil ratio can be reduced, and the wire diameter of the coil can be increased. This can not only ensure the damping of the spring, but also reduce the weight of the spring, while increasing the rigidity of the spring in the straight direction, so as to reduce the vibration of the spring caused by the movement of the car and make the car run more linearly and comfortably.

[0014] The angle change of the anti-roll bar of the car includes the tilt angle of the anti-roll bar when the vehicle rolls and the vibration amplitude change of the anti-roll bar when the vehicle moves in a straight line. The anti-roll bar damper can effectively reduce the roll angle of the anti-roll bar and the vibration amplitude of the anti-roll bar when the vehicle moves in a straight line, and improve the straight-line driving quality. Under the initial damping setting of the anti-roll bar damper, when the angle between the anti-roll bar damper and the anti-roll bar is greater than 45 degrees during connection, the damper's action tends to reduce the change of the anti-roll bar's vibration amplitude. When the angle is less than 45 degrees, the damper's action tends to reduce the roll angle of the anti-roll bar. According to the data of the experimental vehicle, when the angle is set to 60 degrees, the vehicle's straight-line driving quality and the reduction of roll reach a balance between comfort and movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram showing the structure of a new type of anti-roll bar damper for automobiles without being installed on the vehicle.

[0016] Figure 2 It is a schematic diagram showing the structure of a new type of anti-roll bar damper for automobiles. It shows the slightly stretched state of the vehicle when it is stationary after installation.

[0017] Figure 3 This is a schematic diagram showing the plan view of the left end fixing hoop.

[0018] Figure 4 Schematic representation of the plan view of the right end fixing hoop

[0019] Figure 5This is a schematic diagram showing a two-end neck spring.

[0020] Figure 6 This is a schematic diagram showing the middle neck spring.

[0021] Figure 7 It is a schematic representation of a unilateral neck spring diagram

[0022] Figure 8 It is a schematic representation of the total length of the spring. b is the length of the spring from the left end point to the right end point.

[0023] The parts in the figure are: 1 left end fixing hoop 3 damping spring 4 right end fixing hoop 5 right end spring coil 6 left end spring coil 7 right end fixing hoop bolt 8 left end fixing hoop bolt a is the distance between the spring damping coil and the fixing hoop left end fixing hoop right end fixing hoop two end neck spring middle neck spring one side neck spring left end spring coil right end spring coil left end fixing bolt right end fixing bolt These names are just for illustration to distinguish the names, they are not professional terms and have no other meanings

[0024] Common spring materials include carbon spring steel, alloy spring steel and non-ferrous metal alloys. DETAILED DESCRIPTION

[0025] The following is an explanation of the implementation of the present invention. In addition, in each of the drawings, the scale of the drawings is sometimes enlarged for the convenience of explanation and is different from the actual scale. The material of the fixing hoop is a common metal in the art.

[0026] 1. A new type of anti-roll bar damper for automobiles, comprising a damping spring, a left-end fixing hoop and a right-end fixing hoop, wherein the left-end fixing hoop on the left-end fixing hoop is bolted to the left-end fixing ring of the damping spring, and the right-end fixing hoop on the right-end fixing hoop is bolted to the right-end fixing ring of the damping spring. After the damping spring is connected to the fixing hoops at both ends, it is a telescopic structure. The length of the metal spring is between 3 mm and 550 mm, the wire diameter is in the range of 0.1 mm to 20 mm, and the inner diameter is in the range of 2 mm to 100 mm. The inner radius of the circle of the fixing hoops at both ends is between 2 mm and 80 mm, the length of the U-shaped fixing hoop is between 2 mm and 150 mm, and the inner width is between 5 mm and 150 mm. In addition, the length of the middle spring coil part of the two-end neck spring accounts for no less than 80% of the total length of the spring, the length of the middle spring coil part of the middle neck spring accounts for no more than 80% (inclusive) and no less than 40% (inclusive) of the total length of the spring, and the length of the single-side spring coil part of the single-side neck spring accounts for no more than 40% of the total length of the spring.

[0027] 2. The wire diameter of the two-end neck spring is 1.5 mm, the total length is 105 mm, the inner diameter of the whole spring is 18 mm, the length of the a and c parts on both sides of the spring straight neck is 18 mm, the inner diameter of the spring coil at both ends is 10 mm, and the material is spring steel. The inner diameter of the left end fixing hoop is 22 mm, the outer diameter is 45 mm, and the thickness is 20 mm. The material is aluminum alloy. The other end is the right end fixing hoop, with an inner diameter of 10 mm, an outer diameter of 30 mm, and a thickness of 20 mm. The material is aluminum alloy. The 22 mm port of this damper fixing hoop is mounted on the anti-roll bar of the car chassis, and the 10 mm port is mounted on the anti-roll bar suspension rod.

[0028] 3. The wire diameter of the middle neck spring is 10 mm, the total length is 180 mm, the inner diameter of the whole spring is 50 mm, the length of the straight neck a and c parts of the spring is 60 mm, and the material is spring steel. The inner diameter of the left end fixing hoop is 45 mm, the thickness is 35 mm, and the material is aluminum. The right end is a U-shaped fixing hoop, with an inner length of 150 mm and a width of 100 mm, and the material is aluminum alloy. This damper fixing hoop 45 mm port is set on the modified car anti-roll bar, and the U-shaped fixing hoop is fixed to the straight arm or curved arm under the chassis.

[0029] 4. The wire diameter of the single-side neck spring is 2.0 mm, the total length is 550 mm, the inner diameter of the entire spring is 16 mm, the length of the spring straight neck a and c parts is 415 mm, the inner diameter of the spring coils at both ends is 10 mm, and the material is spring steel. The inner diameter of the left end fixing hoop is 22 mm, the outer diameter is 45 mm, the thickness is 20 mm, and the material is aluminum alloy. The other end is the right end fixing hoop, with an inner diameter of 30 mm and made of aluminum alloy. The 22 mm port of this damper fixing hoop is mounted on the anti-roll bar of the automobile chassis, and the 30 mm port is mounted on the anti-roll bar suspension rod of the automobile chassis.

[0030] 5. The wire diameter of the two end neck springs is 0.5 mm, the total length is 45 mm, the inner diameter of the whole spring is 6 mm, the length of the spring straight neck a and c parts is 8 mm, the inner diameter of the spring coils at both ends is 10 mm, and the material is manganese steel. The inner diameter of the left end fixing hoop is 15 mm, the outer diameter is 45 mm, and the thickness is 20 mm. The material is aluminum alloy. The other end is the right end fixing hoop, with an inner diameter of 6 mm, an outer diameter of 30 mm, and a thickness of 20 mm. The material is aluminum alloy. The 15 mm port of this damper fixing hoop is mounted on the anti-roll bar of the car chassis, and the 6 mm port is mounted on the anti-roll bar suspension rod.

[0031] 6. Car elk test to verify the damper effect. Take the BMW 325 model as an example. When the anti-roll bar damper is not installed, first change the line test at a speed of 80 kilometers per hour. The front of the car is unstable, the body rolls severely, the left side of the front of the car hits the cone barrel, and then the rear of the car slides obviously. When exiting the corner, the rear of the car also flips a cone barrel. Then reduce the cornering speed to 75 kilometers per hour. After reducing the speed, although the front of the car rolls more severely than the rear of the car, the vehicle will swing when exiting the corner, but it can still meet the cornering standard. Now it is still the BMW 325 model, but the anti-roll bar damper described in the claim is installed on the double-sided suspension, with a spring wire diameter of 1.6 mm, an inner diameter of 16 mm, and a spring length of 65 mm. It first passes at a speed of 75 kilometers per hour, meeting the cornering standard, and the entire body roll is not very serious. The speed is increased to 80 kilometers per hour, and the body rolls a little, but it meets the cornering standard, and the front of the car does not swing significantly. The speed is increased to 83 kilometers per hour, meeting the cornering standard, but the body rolls severely and the front of the car swings, indicating that under the setting of the anti-roll bar damper installed on this vehicle, the reinforcement of the chassis has reached the limit state. After comparing before and after, it is shown that our technical solution has a significant inhibitory effect on the angle change of the vehicle anti-roll bar and has a significant inhibitory effect on the vehicle roll.

[0032] Our technology's composite telescopic structure of damping spring and spring fixing hoop can effectively reduce the angle change and vibration change of the anti-roll bar by directly connecting the car's anti-roll bar with the anti-roll bar hanger or lower straight arm, thereby achieving the purpose of reducing the body roll of the sports vehicle and improving the straight-line driving quality.

[0033] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of this technical solution, and the specific data given are only the preferred embodiment of the technical solution. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of this technical solution shall fall within the protection scope of this technical solution.

Claims

1. A new type of automobile anti-roll bar damper, Its characteristics are: The invention comprises a damping spring, a left-end fixing hoop and a right-end fixing hoop; wherein a left-end fixing hoop bolt (8) on the left-end fixing hoop (1) is connected to a left-end fixing ring (6) of the damping spring, and a right-end fixing hoop bolt (7) on the right-end fixing hoop (4) is connected to a right-end fixing ring (5) of the damping spring; and the damping spring (3) forms a telescopic structure after being connected to the fixing hoops at both ends.

2. A novel automobile anti-roll bar damper according to claim 1, Its characteristics are: The damping spring includes three settings: a two-end neck spring, a middle neck spring and a single-side neck spring. The length of the spring is between 3 mm and 550 mm, the wire diameter is in the range of 0.1 mm to 20 mm, and the inner diameter is in the range of 2 mm to 100 mm. The telescopic structure composed of the fixing hoops at both ends and the damping spring increases damping when stretched and returns to the initial position when contracted.

3. A novel automobile anti-roll bar damper according to claim 1, Its characteristics are: The left-end fixing hoop and the right-end fixing hoop are annular or U-shaped fixing hoops, the radius of the fixing hoop ring is between 2 mm and 80 mm, the length of the U-shaped fixing hoop is between 2 mm and 150 mm, and the width is between 5 mm and 150 mm. One end of the anti-roll bar damper is fixed to the anti-roll bar of the car, and the other end is fixed to the anti-roll bar hanger, or fixed to the suspension straight arm bent arm or fixed point near the anti-roll bar.

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