TWI659886B - Tension spring structure provided on a shock absorber - Google Patents

Abstract

A tension spring structure provided on a shock absorber is provided on a vehicle moving along a first axial direction. The tension spring structure is sleeved on the shock absorber and includes a plurality of spring coil portions. Define a second axial direction perpendicular to the first axial direction, each coil portion has a first outer diameter parallel to the first axial direction, and a second outer diameter parallel to the second axial direction, at least one spring The first outer diameter of the ring portion is larger than the second outer diameter and has a substantially oval ring shape. When the vehicle is tilted due to a turn or the like and subjected to a lateral force along the second axial direction, since the first outer diameter of the coil portion is larger than the second outer diameter, the force distribution can be made more even, and The spring coil portion is less susceptible to traction by the rebound force. When the vehicle is traveling or braking, the rebound shock can be slowed down, so the degree of shock absorption can be increased, thereby increasing the balance stability of the vehicle when cornering.

Description

Tension spring structure provided on a shock absorber

The invention relates to a spring structure, in particular to a tension spring structure provided on a shock absorber.

The shock absorption system is a device installed on the car body to respond to uneven road conditions and potholes. It can be moved up and down in the height direction to reduce the situation of body shake and bouncing, to achieve the protection of the car body, and can improve The comfort of the rider.

Referring to FIG. 1, a simple suspension system 1 is generally composed of a suspension 10 and a set of springs 11 provided on the suspension 10. The elastic restoring force generated by the spring 11 contracting after receiving the force can achieve the functions of shock absorption and cushioning force, and the shock absorber 10 is responsible for restraining the spring 11 from rebounding. The spring 11 of the general suspension system 1 is composed of a plurality of ring-shaped spring coil portions 111 connected to each other. When the vehicle turns to tilt the vehicle body, the spring 11 will receive a large lateral pressure. The ring portion 111 is ring-shaped and cannot effectively respond to lateral pressure. Therefore, the spring 11 is easily damaged due to uneven force, and is affected by the rebound force of the spring 11, which tends to make the vehicle less stable when cornering.

Therefore, an object of the present invention is to provide a tension spring structure capable of effectively responding to lateral pressure.

Therefore, the tension spring structure provided on the shock absorber of the present invention is provided on a vehicle moving along a first axial direction.

The tension spring structure is sleeved on the shock absorber and includes a plurality of spring coil portions connected to each other along a shock absorption axis. After the coils are loaded, they act along the shock-absorbing axis. Define a second axial direction perpendicular to the first axial direction, each coil portion has a first outer diameter parallel to the first axial direction, and a second outer diameter parallel to the second axial direction, at least one spring The first outer diameter of the coil portion is larger than the second outer diameter, and the first outer diameter of the coil portion is the largest outer diameter of the coil portion and is approximately elliptical.

The effect of the present invention is that when the vehicle is tilted due to a turn or the like and subjected to a lateral force in the second axial direction, since the first outer diameter of the coil portion is larger than the second outer diameter, the The force distribution is relatively even, and it can reduce the drag of the rebound force and effectively suppress the roll, which can increase the balance and stability of the vehicle when cornering. When the vehicle is traveling or braking along the first axis, the shape of the coil portion can provide appropriate rebound force to ease the rebound force, so that the tension spring structure achieves a better Q degree and improves shock absorption. quality.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

Referring to FIG. 2, a first embodiment of a tension spring structure 3 provided on a shock absorber 2 according to the present invention is provided on a vehicle moving along a first axis A. The tension spring structure 3 is sleeved on the shock absorber 2 and includes a plurality of spring coil portions 31 connected to each other along a shock absorption axis B. When subjected to a load, the coil sections 31 move up and down along the suspension axis B.

Referring to FIG. 2 and FIG. 3, a second axial direction C perpendicular to the first axial direction A is defined. The first axial direction A, the second axial direction C, and the shock absorption axis B are as shown in FIG. 2. The ground is perpendicular to each other. Each coil portion 31 has a first outer diameter 311 parallel to the first axial direction A, and a second outer diameter 312 parallel to the second axial direction C and perpendicular to the first outer diameter 311. In the first embodiment, the first outer diameter 311 of each coil portion 31 is larger than the second outer diameter 312, and the first outer diameter 311 is the maximum outer diameter of the coil portion 31, so that As viewed from the suspension axis B along the suspension axis 31, the coil portion 31 is substantially oval-shaped as shown in FIG. That is, the first outer diameter 311 of the coil portion 31 corresponds to a long axis, and the second outer diameter 312 corresponds to a short axis. In this first embodiment, the lengths of the first outer diameters 311 of the coil sections 31 are all the same, and preferably 30 mm, and the lengths of the second outer diameters 312 of the coil sections 31 are also the same. It is preferably 25 mm.

Since the first outer diameter 311 of each coil portion 31 is longer and is parallel to the first axial direction A, when the vehicle is turning or leaning and receives a lateral force in the second axial direction C, such The force of the coil portion 31 is relatively uniform, and it can prevent the coil portions 31 from being affected by the rebound force, which can increase the shock absorption and reduce the amplitude of the vibration. Vehicle balance and stability. In addition, when the vehicle is traveling or braking, the spring coil portions 31 can provide an appropriate restoring force, so that the tension spring structure 3 will not be too hard or too soft to have a better Q degree, so it can effectively relax the force of the shock. So as to improve the quality of suspension.

Referring to FIG. 4, a second embodiment of the tension spring structure 3 provided on the shock absorber 2 according to the present invention is substantially the same as the first embodiment except that the spring coils The portion 31 is divided into a first section 41 and a second section 42 that is continued below the first section 41 along the suspension axis B. As shown in FIG. 5, the first outer diameter 311 of each coil portion 31 in the first section 41 is equal to the second outer diameter 312 of the coil portion 31 and is annular. The first outer diameter 311 of each coil portion 31 in the second section 42 is larger than the second outer diameter 312 of the coil portion 31 and is generally oval-shaped as shown in FIG. 6. The first outer diameter 311 and the second outer diameter 312 of the coil sections 31 in the first section 41 and the second section 42 gradually increase from top to bottom. The second embodiment provides another aspect of the tension spring structure 3. The gradual change of the coil portions 31 can make the tension spring structure 3 increase in compression with the load when it is compressed. Increasing the coefficient of elasticity achieves better suspension effects.

Referring to FIG. 7, a third embodiment of the tension spring structure 3 provided on the shock absorber 2 according to the present invention is substantially the same as the second embodiment, except that the third embodiment is different from the third embodiment. In the example, the coil sections 31 are a first section 41 which is separated into two phases, and a second section 42 which is connected to the first section 41 along the suspension axis B. Referring to FIG. 7, and in conjunction with FIG. 5 and FIG. 6, the coil sections 31 in the first sections 41 are annular as shown in FIG. 5, and the first outer portions of the coil sections 31 are The diameter 311 and the second outer diameter 312 gradually decrease in a direction away from the second section 42 along the suspension axis B. The coil sections 31 in the second section 42 are all oval-shaped, The first outer diameter 311 and the second outer diameter 312 of the coil sections 31 gradually decrease from the center toward the upper and lower ends. The third embodiment provides another aspect of the tension spring structure 3, so that the coil portions 31 can change the feedback characteristics according to the compression stroke, and improve the versatility. It should be particularly noted that the third embodiment may also be configured as shown in FIG. 8, so that the coil sections 31 of the first sections 41 are annular as shown in FIG. 5, and the coils The first outer diameter 311 and the second outer diameter 312 of the portion 31 are the same. The coil portion 31 of the second section 42 is an oval ring as shown in FIG. 6, and the first outer diameter 311 and the second outer diameter 312 of the coil portions 31 are upward and downward from the center. The ends gradually decrease. Of course, the third embodiment may also be configured as shown in FIG. 9, so that the coil sections 31 of the first sections 41 are annular as shown in FIG. 5, and the coil sections 31 of the coil sections 31 The first outer diameter 311 and the second outer diameter 312 gradually decrease in a direction away from the second section 42 along the suspension axis B, and the coil portion 31 of the second section 42 is as shown in FIG. 6. It is shown as an elliptical ring, and the first outer diameter 311 and the second outer diameter 312 of the coil sections 31 are the same.

In summary, by designing at least one coil portion 31 as an elliptical ring, it can have better strength in the second axial direction C, so that it can withstand large lateral forces and can Avoiding the impact of rebound force, in order to increase the degree of shock absorption, it can reduce the amplitude of the shock and slow down the shock. It can then respond to the situation where the vehicle is tilted due to cornering or other reasons, and increase the balance stability and comfort of the vehicle. When driving or braking, it can also provide a suitable rebound force to improve the driving quality, so it can indeed achieve the purpose of cost invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited in this way, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧ shock absorber

3‧‧‧ tension spring structure

31‧‧‧Spring coil section

311‧‧‧first outer diameter

312‧‧‧Second outer diameter

41‧‧‧Section 1

42‧‧‧Second Section

A‧‧‧first axis

B‧‧‧ Suspension Axial

C‧‧‧Third axis

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is an exploded perspective view illustrating a conventional suspension system; FIG. 2 is an exploded perspective view illustrating A first embodiment of a tension spring structure provided on a shock absorber according to the present invention; FIG. 3 is a schematic view illustrating a top view of one coil portion in the first embodiment; FIG. 4 is a cross-sectional view illustrating A second embodiment of a tension spring structure provided on a shock absorber according to the present invention; FIG. 5 is a schematic diagram illustrating a top view of a coil portion in a first section of the second embodiment; FIG. 6 It is a schematic diagram illustrating a top view of a coil portion in a second section of the second embodiment; FIG. 7 is a cross-sectional view illustrating one of the tension spring structures provided on the shock absorber according to the third embodiment of the present invention; Embodiment; FIG. 8 is a sectional view illustrating another aspect of the third embodiment; and FIG. 9 is a sectional view illustrating another aspect of the third embodiment.

Claims (9)

A tension spring structure provided on a shock absorber is provided on a vehicle moving along a first axial direction. The tension spring structure is sleeved on the shock absorber and includes: a plurality of springs The coil sections are connected to each other along a suspension axis, and after being loaded, the coil sections act along the suspension axis, defining a second axis perpendicular to the first axis, and each coil The portion has a first outer diameter parallel to the first axial direction and a second outer diameter parallel to the second axial direction. The first outer diameter of at least one coil portion is greater than the second outer diameter, and the spring The first outer diameter of the loop portion is the maximum outer diameter of the coil portion, and is approximately elliptical. The tension spring structure provided on the shock absorber as described in claim 1, wherein the first outer diameter of each coil portion is larger than the second outer diameter and has an oval ring shape. The tension spring structure provided on the shock absorber as described in claim 1, wherein the coil sections are divided into a first section, and a section that is continuous below the first section along the suspension axis. In the second section, the first outer diameters of the coil sections in the first section are equal to the respective second outer diameters and are generally annular, and the first outer diameters of the coil sections in the second section Both are larger than their respective second outer diameters and are generally oval rings. The tension spring structure provided on the shock absorber as described in claim 3, wherein the second outer diameters of the coil portions gradually increase from top to bottom along the shock absorption axis. The tension spring structure provided on a shock absorber as described in claim 1, wherein the coil sections are divided into a first section divided into two phases and a second section connected to the first sections Section, the first outer diameters of the coil sections in the first sections are all equal to their respective second outer diameters and are generally annular, and the first outer diameters of the coil sections in the second sections are all Larger than the respective second outer diameters, they are almost oval-shaped. The tension spring structure provided on the shock absorber as described in claim 5, wherein the second outer diameter of the coil portion in each first section is away from the second section along the suspension axis. The direction of the coil gradually decreases, and the second outer diameter of the coil portion in the second section gradually decreases toward the upper and lower ends along the suspension axis. The tension spring structure provided on the shock absorber as described in claim 5, wherein the second outer diameter lengths of the coil sections in the first sections are the same, and the lengths of the coil sections in the second section are the same. The second outer diameter gradually decreases toward the upper and lower ends along the suspension axis. The tension spring structure provided on the shock absorber as described in claim 5, wherein the second outer diameter of the coil portion in each first section is away from the second section along the suspension axis. The direction of the coil gradually decreases, and the second outer diameter length of the coil portion in the second section is the same. The tension spring structure provided on the shock absorber as described in claim 1, wherein the first outer diameter of the coil portion in the elliptical ring shape is 30 mm, and the second outer diameter is 25 mm.