JP3235366U - Vehicle suspension - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle suspension device capable of reducing vibration and noise during vehicle traveling. A suspension device (1) includes a damper (4) including a cylinder (2) and a piston rod (3), a coil spring (5) attached so as to surround the damper (4), and a strut mechanism (6) including the damper (4) and the coil spring (5). .. The first rotation support 7 is attached to the upper end side of the strut mechanism 6, and the second rotation support 8 is attached to the lower end side. A tapered plate portion 9 is provided in which the distance between the first plate 9a and the second plate 9b gradually decreases toward the upper side of the vehicle body. The first rotation support 7 is fixed at a required position of the first plate 9a, and the strut mechanism 6 is rotatable at the fixed position. The second rotary support 8 is rotatably connected to the piston rod 3 and the rod member 10 in a state where the outer peripheral surface thereof is in contact with the second plate 9b and is slidable. [Selection diagram] Fig. 1

Description

The present invention relates to a vehicle suspension device.

In a running vehicle, the wheels move up and down due to the unevenness of the road surface. A suspension device is used that absorbs the impact by preventing the vibration caused by the vertical movement of the wheels from being directly transmitted to the vehicle body.

As shown in FIG. 2, for example, the conventional suspension device 51 includes a strut 56 composed of a damper 54 composed of a cylinder 52 and a piston rod 53, and a coil spring 55 provided so as to surround the damper 54. (See, for example, Patent Document 1). The coil spring 55 is interposed between the wheel 21 and the vehicle body 22 and absorbs the impact caused by the vibration when the wheel 21 moves up and down. Further, the damper 54 softens the vibration caused by the expansion / contraction and restoration of the coil spring 55.

The lower end side of the strut 56 is fixed to the knuckle 24 by the first connecting portion 23. The lower arm 25 is fixed to the lower end of the knuckle 24 by the second connecting portion 26. The first connecting portion 24 and the second connecting portion 26 are arranged inside the vehicle body 22 in the width direction with respect to the axle hub 27.

The coil spring 55 is interposed between the lower spring support portion 31 and the upper spring support portion 32. Further, in order to reduce abnormal noise, seat rubbers are attached between the coil spring 55 and the lower spring support portion 31, and between the coil spring 55 and the upper spring support portion 32, respectively.

An upper mount 33 is attached to the upper end of the piston rod 53. The upper mount 33 is fixed to the wheel house 28 of the vehicle body 22 by bolts. As a result, the upper end of the damper 54 is connected to the vehicle body 22 via the upper mount 33.

Jikkensho 57-43687 Gazette

The conventional suspension device 51 supports the vibration when the wheel 21 moves up and down due to the unevenness of the road surface only at two points, the upper point (upper mount 33) and the lower point (first connecting portion 23).

In the conventional suspension device 51, although the impact is alleviated by the action of the coil spring 55, the upward force transmitted from the road surface and the downward force due to the weight of the vehicle body 22 always repel each other linearly through the strut 56. Therefore, the structure is such that vibration and noise during running are likely to occur.

The present invention has been made in view of the above problems, and has fundamentally reviewed the structure that linearly supports the vibration when the wheel 21 moves up and down with only two points, the upper point and the lower point, and the direction of the force. Provides a suspension device that can reduce vibration and noise during traveling by converting the above into an obliquely inclined direction so that the upward force transmitted from the road surface and the downward force due to the weight of the vehicle body 22 do not directly collide with each other. The purpose is.

The vehicle suspension device of the present invention is
It consists of a cylinder and a piston rod, and a damper that expands and contracts in the axial direction by sliding the piston rod with respect to the cylinder.
Coil springs installed around the damper and
The first rotary support attached to the upper end side of the strut mechanism consisting of a damper and a coil spring,
The second rotary support attached to the lower end side of the strut mechanism,
A tapered plate that has a first plate in contact with the first rotary support and a second plate in contact with the second rotary support, and the distance between the first plate and the second plate gradually decreases toward the upper part of the vehicle body. Department and
A rod member whose one end is connected to the piston rod via the second rotary support and whose other end is connected to the knuckle.
It is equipped with.

In the present invention
The strut mechanism is arranged below the plate portion with the upper side of the vehicle body tilted inward in the width direction of the vehicle body.
The first rotary support is fixed at the required position of the first plate, and the strut mechanism can be rotated at the fixed position.
The second rotary support rotatably connects the piston rod and the rod member in a state where the outer peripheral surface thereof is in contact with the second plate and slidable.

In the present invention, the plate portion, which is a tapered box body that tapers toward the upper side, is provided, and the strut mechanism is arranged in a state of being slanted below the plate portion. A first rotary support capable of rotating the strut mechanism at a fixed position intersecting the inner surface of the plate portion is attached to the upper part of the strut mechanism, and the inner surface of the plate portion is attached to the lower part of the strut mechanism. A second rotation support that can move up and down while in contact and that can change the angle with the rod member is attached.

According to the present invention, the upward force when the wheel moves up and down is first transmitted from the rod member to the second rotary support, and then the direction of the force is the strut mechanism while raising the position of the second rotary support. It is converted in the axial direction (diagonal direction), and the force is transmitted to the vehicle body via the first rotation support.

Then, when the position of the second rotary support rises, the piston rod is pushed in because the plate portion is tapered, the coil spring is compressed, and then a repulsive force is generated by the coil spring to generate the second rotary support. Push back. As a result, the height position of the second rotation support repeats ascending and restoring.

In the present invention, the direction of the force transmitted from the wheels can be changed and transmitted to the vehicle body while being absorbed, so that vibration and noise during traveling are reduced.

FIG. 1 is a diagram showing a configuration of a vehicle suspension device according to an embodiment. FIG. 2 is a diagram showing an example of a conventional vehicle suspension device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following embodiments are examples of the present invention and are not intended to limit the scope of the present invention, its application, or its use.

In the present specification, "upper" and "upper" mean the direction of the head of the person seated in the seat, and "lower" and "lower" mean the direction of the feet of the person seated in the seat. Further, the "width direction of the vehicle" means the direction of the left hand and the right hand of the person seated in the seat.

[The present embodiment]
As shown in FIG. 1, the suspension device 1 of the present embodiment includes a cylinder 2 and a piston rod 3, and includes a damper 4 that expands and contracts in the axial direction by sliding the piston rod 3 with respect to the cylinder 2. There is.

Further, a right-handed or left-handed coil spring 5 is attached so as to spirally surround the damper 4. The coil spring 5 is interposed between the lower spring support portion 31 and the upper spring support portion 32. The damper 4 and the coil spring 5 form a strut mechanism 6.

The coil spring 5 is interposed between the wheel 21 and the vehicle body 22 and absorbs the impact transmitted from the wheel 21. The damper 4 is provided so as to be expandable and contractible between the wheel 21 and the vehicle body 22, and softens the vibration when the coil spring 5 expands and contracts or restores. Further, the rubber material 11 provided at the abutting portion with the upper end of the piston rod 3 sliding in the cylinder 2 absorbs the impact transmitted from the piston rod 3.

In the present embodiment, a plate portion 9 made of a tapered box body having an inner surface shape that tapers toward the upper side is attached to a position corresponding to a wheel house. The plate portion 9 has a first plate portion 9a located inside the width direction of the vehicle and a second plate portion 9b located outside the width direction of the vehicle. The distance between the first plate 9a and the second plate 9b gradually decreases toward the upper side of the vehicle body 22.

The strut mechanism 6 has a first rotation support 7 attached to the upper end side thereof and a second rotation support 8 attached to the lower end side thereof. The strut mechanism 6 is located inside the plate portion 9, and is arranged in a state of being inclined inward in the width direction of the vehicle toward the upper side of the vehicle body 22.

The first rotary support 7 is fixed at a required position of the first plate 9a, and the strut mechanism 6 is rotatably connected at the fixed position in a certain angle range. The angle θ1 formed by the first plate 9a and the strut mechanism 6 temporarily decreases when an upward force from the wheel 21 is applied, but expands to the original angle when restored by the repulsive force of the coil spring 5. repeat.

The upper end side of the rod member 10 is rotatably connected to the piston rod 3 via the second rotary support 8. The outer peripheral surface of the second rotation support 8 is always in contact with the inner surface of the second plate 9b. The second rotary support 8 is in a state of being able to slide by a certain length in the vertical direction while maintaining a state of being in contact with the inner surface of the second plate 9b, and is in a state of being able to slide with the piston rod 3 by a certain length. The rod members 10 are rotatably connected.

The lower end side of the rod member 10 is fixed to the knuckle 24 by the first connecting portion 23. The lower arm 25 is fixed to the lower end of the knuckle 24 by the second connecting portion 26. The first connecting portion 24 and the second connecting portion 26 are arranged inside the vehicle body 22 in the width direction with respect to the axle hub 27.

The angle θ2 formed by the rod member 10 and the piston rod 3 temporarily decreases when an upward force is applied from the wheel 21, and repeats an operation of expanding to the original angle when restored by the repulsive force of the coil spring 5.

Further, the height position of the second rotary support 8 is temporarily pushed upward when an upward force is applied from the wheel 21, but is lowered to the original position when restored by the repulsive force of the coil spring 5. repeat.

[Effect of this embodiment]
According to the suspension device 1 according to the present embodiment, the upward force when the wheel 21 moves up and down due to the unevenness of the road surface is first transmitted from the rod member 10 to the second rotation support 8, and then the second rotation support. The direction of the force is converted into the axial direction of the piston rod 3 of the strut mechanism 6 while raising the position of 8, and the force is transmitted to the vehicle body 22 via the first rotary support 7.

Then, when the position of the second rotary support 8 rises, the piston rod 3 is pushed in because the plate portion 9 is tapered, the coil spring 5 is compressed, and then a repulsive force is generated to generate the second rotary support. Push 8 back. Further, as described above, the angles θ1 and θ2 repeatedly open and close. As a result, the suspension device 1 can change the direction of the force transmitted from the wheel 21 and transmit it to the vehicle body 22 while absorbing it, so that vibration and noise during traveling are reduced.

It goes without saying that the present invention is not limited to the above-described embodiment, and the embodiment may be appropriately changed as long as it is within the scope of the technical idea described in each claim.

1 Suspension device 2 Cylinder 3 Piston rod 4 Damper 5 Coil spring 6 Strut mechanism 7 1st rotation support 8 2nd rotation support 9 Plate part 9a 1st plate 9b 2nd plate 10 Rod member 11 Rubber material 21 Wheel 22 Body body 23 1st connecting part 24 Knuckle 25 Lower arm 26 2nd connecting part 27 Axle hub 31 Lower spring support part 32 Upper spring support part

Claims (1)

It consists of a cylinder and a piston rod, and a damper that expands and contracts in the axial direction by sliding the piston rod with respect to the cylinder.
A coil spring attached so as to surround the damper, and
A first rotary support attached to the upper end side of a strut mechanism including the damper and the coil spring, and
A second rotary support attached to the lower end side of the strut mechanism,
It has a first plate in contact with the first rotary support and a second plate in contact with the second rotary support, and the distance between the first plate and the second plate gradually decreases toward the upper part of the vehicle body. The tapered plate part and
A rod member having one end connected to the piston rod via the second rotary support and the other end connected to the knuckle.
Equipped with
The strut mechanism is arranged below the plate portion in a state where the upper side of the vehicle body is inclined inward in the width direction of the vehicle body.
The first rotation support is fixed at a required position of the first plate, and the strut mechanism is rotatable at the fixed position.
The second rotary support rotatably connects the piston rod and the rod member in a state where the outer peripheral surface thereof is in contact with the second plate and slidable.
Vehicle suspension system.

Images