CN102328562B - Automobile independent suspension with transverse leaf spring - Google Patents

Abstract

The present invention provides a horizontal leaf spring automobile independent suspension, wherein the horizontal leaf spring automobile independent suspension includes a shock absorber and a leaf spring, the shock absorber includes an oil storage cylinder, and the inner edge of the oil storage cylinder is along the The axis of the oil storage cylinder is slidably inserted with a piston rod, one end of the piston rod protrudes from the oil storage cylinder, and the end of the piston rod protruding from the oil storage cylinder is movably connected with the leaf spring. The middle part of the piston rod is fixedly connected with a piston, and the piston divides the cavity in the oil storage cylinder into upper and lower sealed cavities. The conduction directions of the two one-way throttle valves are opposite. During the use of the horizontal leaf spring automobile independent suspension provided by the present invention, the wheels only move up and down relative to the vehicle frame without lateral slippage, thus ensuring the positioning of the wheels and avoiding severe tire wear. problem, to ensure the service life of the tire.

Description

Automobile Independent Suspension with Transverse Leaf Spring

technical field

The invention relates to the technical field of automobiles, in particular to an automobile independent suspension with transverse leaf springs.

Background technique

The suspension system is the general term for the force transmission connection device between the frame and the axle, which can transmit the vertical reaction force, longitudinal reaction force, lateral reaction force and the moment generated by the above reaction force to the wheel. On the body to ensure the normal running of the car.

As shown in Figure 1, it is the schematic diagram of the principle of the double-wishbone type independent suspension in the prior art, and it comprises the upper cross-arm 21 and the lower cross-arm 22 on the hinged and vehicle frame, between the upper cross-arm 21 and the lower cross-arm 22 The kingpin 23 is hinged between the wheels, and the wheel 24 is connected with the kingpin 23 by the axle. During the driving process of the vehicle, the suspension will be deformed according to the driving state of the vehicle and the road surface conditions. In Figure 1, the solid line is the original state of the suspension, and the dotted line is the state after deformation. During the deformation of the suspension, the wheels slip relative to the body, which will aggravate the wear of the tires and reduce the service life of the tires.

In addition, McPherson suspension is also a widely used suspension. This suspension includes a sliding column and a swing arm. This suspension has the advantages of simple structure, small unsprung mass, easy engine and steering system. layout, can be matched with a variety of springs and the height of the vehicle body can be adjusted, etc., but its sliding column is easy to wear, and when this kind of suspension is deformed, the positioning angle of the kingpin and the wheelbase will change, resulting in wheel side If the design is not proper, there will be steering interference during the movement.

Contents of the invention

The invention provides an independent suspension for automobiles with transverse leaf springs to solve the problem in the prior art that the wheels will slip sideways during the use of the suspension, which will cause serious tire wear and affect the service life of the tires.

The invention provides an automobile independent suspension with transverse leaf springs, which includes a shock absorber and a leaf spring. The shock absorber includes an oil storage cylinder, and a piston is slidably inserted in the oil storage cylinder along the axis of the oil storage cylinder. One end of the piston rod protrudes from the oil storage cylinder, and the end of the piston rod protruding from the oil storage cylinder is movably connected with the leaf spring, and the middle part of the piston rod is fixedly connected with a piston, so The piston divides the cavity in the oil storage cylinder into two sealed upper and lower cavities. The piston is provided with two one-way throttle valves for connecting the upper and lower cavities. The direction of conduction to the throttle valve is opposite.

The horizontal leaf spring automobile independent suspension as described above, wherein, the upper and lower ends of the upper and lower cavities are fixed with linear bearings, and the piston rod and the linear bearings installed in the upper and lower cavities Corresponding cooperation.

The horizontal leaf spring automobile independent suspension as described above, wherein the oil storage cylinder includes a cylinder body and a bearing end cover sealed and installed at the upper opening of the cylinder body, and a through hole is provided at the bottom of the cylinder body, The piston rod extends into the barrel through the through hole, and an oil seal is arranged between the piston rod and the through hole.

According to the independent suspension for automobiles with transverse leaf springs as described above, one end of the piston rod protruding from the oil storage cylinder is provided with a leaf spring installation hole, and one end of the leaf spring is inserted into the leaf spring installation hole.

In the independent suspension for automobiles with horizontal leaf springs as described above, protrusions are provided on the upper and lower walls of the leaf spring installation hole, and the protrusions are matched with the upper and lower surfaces of the leaf springs.

According to the independent suspension for automobiles with horizontal leaf springs as described above, the left and right wall surfaces of the leaf spring installation hole in the horizontal direction are in corresponding sliding fit with the left and right side surfaces of the leaf spring.

According to the independent suspension for automobiles with horizontal leaf springs as described above, there is a leaf spring deflection space between the left and right walls of the leaf spring installation hole in the horizontal direction and the left and right sides of the leaf spring.

During the use of the horizontal leaf spring automobile independent suspension provided by the present invention, the axle has only one degree of freedom of relative movement up and down relative to the vehicle frame, and no lateral slippage occurs, thus ensuring wheel positioning and avoiding tire wear Serious problems, ensure the service life of the tire, and simple structure, small installation space.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Figure 1 is a schematic diagram of the principle of the double wishbone independent suspension;

Fig. 2 is a schematic structural view of an embodiment of the independent suspension of a vehicle with transverse leaf springs according to the present invention.

Reference signs:

1-Frame; 2-Bearing end cover; 3, 7-Linear bearing;

4-cylinder; 5-piston; 6, 15-one-way throttle valve;

8-oil seal; 9-leaf spring mounting hole; 10-leaf spring;

11-fixed sleeve; 12-axle; 13, 24-wheel;

14-piston rod; 16-annular ring; 21-upper cross arm;

22-lower wishbone; 23-king pin.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in FIG. 2 , it is a structural schematic diagram of an embodiment of the independent suspension of a vehicle with transverse leaf springs according to the present invention, including a shock absorber and a leaf spring. Both the shock absorber and the leaf spring 10 are fixed on the vehicle frame 1 by bolts.

Wherein, the shock absorber includes a cylinder 4, a through hole is arranged at the bottom of the cylinder 4, the axis of the through hole coincides with the axis of the cylinder 4, and a piston rod 14 is inserted into the cylinder through the through hole. Body 4. An oil seal 8 is installed in the circumferential direction where the piston rod 14 cooperates with the through hole, and the oil seal 8 realizes the dynamic sealing between the piston rod 14 and the through hole. A linear bearing is fixedly installed on the top and bottom of the cylinder 4. The upper and lower linear bearings 3, 7 are coaxially arranged, and both cooperate with the piston rod 14. Through the two linear bearings 3, 7 here, the piston rod 14 can slide up and down along the axis of the cylinder 4 inside the cylinder 4 . A bearing end cover 2 is fixed by screws at the opening of the top of the cylinder 4. The bearing end cover 2 is placed on the end surface of the linear bearing 3, and a sealing ring is installed between the bearing end cover 2 and the cylinder 4 to realize the bearing. Static seal between end cap 2 and barrel 4. In the middle of the piston rod 14, a piston 5 is fixed by an annular ring 16, the piston 5 is located between the two linear bearings 3, 7, and the piston 5 will be formed by the cylinder 4 and the bearing end cover 2. The inner cavity is divided into upper and lower two sealed cavities, and each cavity is filled with oil. In order to make the oil in the upper and lower cavities flow mutually, two one-way throttle valves 6, 15 are arranged on the piston 5, and the conduction directions of the two one-way throttle valves 6, 15 are opposite.

A leaf spring installation hole 9 is provided at one end of the piston rod 14 protruding from the oil storage cylinder, and one end of the leaf spring is inserted into the leaf spring installation hole 9 . In order to reduce the friction between the leaf spring 10 and the leaf spring mounting hole 9, protrusions are provided on the upper and lower walls of the leaf spring mounting hole, and the protrusions are correspondingly matched with the upper and lower surfaces of the leaf spring.

In addition, it should be pointed out that when the horizontal leaf spring automobile independent suspension is used for steering wheels, the left and right sides of the leaf spring mounting hole in the horizontal direction (the left and right in this article refer to the front and rear directions of the vehicle) and the two walls A leaf spring deflection space is provided between the left and right sides of the leaf spring, so that relative rotation can occur between the piston rod and the leaf spring. At this time, the piston rod is used as the steering kingpin of the wheel, and the wheel rotates around the piston rod when turning. When the horizontal leaf spring automobile independent suspension is used for non-steering wheels, there is a sliding fit with a small gap between the left and right walls of the leaf spring mounting hole in the horizontal direction and the left and right sides of the leaf spring. It can move up and down, but cannot turn.

In the use of the horizontal leaf spring automobile independent suspension, when the wheel is beating due to the action of the road surface, its beating direction can only move up and down in the vertical direction with the piston rod, thus avoiding the problem of side slipping of the wheel. The wear of the wheel is reduced and the service life of the tire is guaranteed. At the same time, when the piston rod moves up and down, the oil in the two cavities communicates with each other through the one-way throttle valves 6 and 15, without the need for other cylinders to replenish the oil, because the one-way throttle valves 6 and 15 The throttling effect produces damping to reduce vibration. In addition, the vehicle independent suspension with transverse leaf springs has a simple structure, a small space, and is easy to be arranged on the vehicle, without the problem of steering interference.

At the same time, the wheel 13 is fixedly installed on the lower end of the piston rod of the shock absorber through the fixed sleeve 11 installed on the axle 12 .

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (4)

1. A kind of horizontal plate spring automobile independent suspension, it is characterized in that, comprise shock absorber and leaf spring, described shock absorber comprises oil storage cylinder tube, slides and inserts along the axis of this oil storage cylinder tube in the described oil storage cylinder tube Equipped with a piston rod, one end of the piston rod protrudes from the oil storage cylinder, and the end of the piston rod protruding from the oil storage cylinder is movably connected with the leaf spring, and the piston rod protrudes from the storage cylinder. One end of the oil cylinder is provided with a leaf spring installation hole, and one end of the leaf spring is inserted into the leaf spring installation hole. When the horizontal leaf spring automobile independent suspension is used for non-steering wheels, the leaf spring installation hole Corresponding sliding fit between the left and right walls in the horizontal direction and the left and right sides of the leaf spring. There is a leaf spring deflection space between the wall surface and the left and right sides of the leaf spring. The middle part of the piston rod is fixedly connected with a piston, and the piston divides the cavity in the oil storage cylinder into two sealed cavities. , the piston is provided with two one-way throttle valves for connecting the upper and lower cavities, and the conduction directions of the two one-way throttle valves are opposite. 2. The automobile independent suspension with horizontal leaf springs according to claim 1, characterized in that linear bearings are fixedly mounted on the upper and lower ends of the upper and lower cavities, and the piston rod is mounted on the upper and lower ends of the cavity. The linear bearings in the cavity are correspondingly matched. 3. The horizontal leaf spring automobile independent suspension according to claim 1 or 2, characterized in that, the oil storage cylinder comprises a cylinder body and a bearing end cap sealed and installed at the upper opening of the cylinder body, the The bottom of the barrel is provided with a through hole, the piston rod extends into the barrel through the through hole, and an oil seal is arranged between the piston rod and the through hole. 4. The horizontal leaf spring automobile independent suspension according to claim 1, wherein protrusions are arranged on the upper and lower walls of the leaf spring installation hole, and the protrusions are connected to the upper surface of the leaf spring. , The lower surface corresponds to fit.

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