Hydraulic front shock absorber with steering control
By introducing steering control and bearing structures into the hydraulic front shock absorber, combined with floating flow control disc and coil spring, the existing hydraulic front shock absorber has solved the problem of fast wear and lack of control, achieving structural simplification, cost reduction and The effect of extending service life.
Patent Information
- Application Number
- CN202421261466.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing hydraulic front shock absorbers have a small contact surface between the inner and outer cylinders, resulting in rapid wear and lack of steering controls, resulting in complex structure, high cost and many failures.
A hydraulic front shock absorber with steering control is designed, which adopts welding or movable connection between the outer cylinder and the steering trapezoidal arm and the push and pull arm. A linear or needle roller bearing is installed between the inner cylinder and the inner cylinder. A floating flow control disk is designed and The limit head combines inner and outer coil springs and hydraulic oil to achieve steering control and reduce wear.
Simplifies the structure, reduces costs, extends the life of the shock absorber, reduces failure and maintenance costs, suitable for front suspension and steering systems in light vehicles.
Smart Images
Figure CN222315783U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hydraulic front shock absorber used for a light vehicle, in particular to a hydraulic front shock absorber with a steering control unit and capable of reducing wear. Background Art
[0002] The hydraulic front shock absorbers disclosed in existing literature and used in various two-wheeled and three-wheeled vehicles use a structural form with a small contact surface for the up and down relative movement between the inner and outer cylinders, which causes rapid wear and reduces the life of the shock absorber; the front shock absorber used for two-wheel steering does not have a steering control, and a steering control needs to be manufactured and installed separately, which makes the structure complicated and expensive, and increases the failure and maintenance costs, so it needs to be improved and perfected. Summary of the invention
[0003] The utility model aims to provide a hydraulic front shock absorber with a steering control and capable of reducing wear, so as to change the shortcomings of the existing steering front suspension shock absorber, which has complex structure, high cost and many faults.
[0004] In order to achieve the above-mentioned purpose, the utility model will adopt the following technical scheme: a hydraulic front shock absorber with a steering control is composed of an inner cylinder, an outer cylinder, a linear bearing or / and a needle bearing, an inner coil spring, an outer coil spring, hydraulic oil, a flow control disc, a limit head, a limit bolt and a seal, and is characterized in that: the outer cylinder of the front shock absorber is welded or movably connected to a steering trapezoidal arm and a steering push-pull arm, so as to connect the linkage and steering control of the left and right front wheel steering when the steering tie rod is connected, and it meets the requirements of the steering trapezoidal structure and the steering working principle, a fixing plate is welded on the outer cylinder to install a disc brake cylinder or a drum brake disc, the disc brake disc or the brake drum is installed on the front wheel, and is installed together with the bearing and the front wheel shaft in the shaft hole at the lower end of the outer cylinder, and is fixed with a locking nut to realize front wheel braking and rotation, a linear bearing or / and a needle bearing is installed between the outer cylinder and the inner cylinder, so that the relative sliding wear between the inner cylinder and the outer cylinder is reduced to extend the life of the shock absorber, and an O-ring, a skeleton oil seal and a dustproof oil seal are installed in the upper end of the outer cylinder. , to prevent the hydraulic oil from leaking out, a plug is designed at the lower end of the inner cylinder, and a central hole and 2 to 20 small through holes in a circumferential array are opened on the plug to respectively locate and supply the hydraulic oil flow, a floating flow control disc and a limit head are installed at the bottom of the inner cylinder, and the limit bolts are used for active connection, limit and guidance, so that the hydraulic oil in the oil chamber can flow smoothly when the spring is compressed, and when the spring returns, the flow control disc blocks part of the oil hole cross section to increase the damping force of the hydraulic oil, so as to eliminate the elastic potential energy of the spring and achieve the purpose of shock absorption, a small through hole is opened on the cylinder body of the lower section of the inner cylinder for the hydraulic oil to flow, the lower end of the inner cylinder and the lower end of the outer cylinder, the flow control disc and the limit head are used for active connection, limit and guidance with bolts, an outer coil spring is sleeved on the outer surface of the upper section of the inner cylinder, and an inner coil spring is installed inside the inner cylinder to bear the load and ease the impact of the road surface, a sealing pad and a plug are installed on the upper end of the inner cylinder to prevent oil leakage, and the shock absorber is used for the front suspension and steering system of motor vehicles and non-motor vehicles, and while realizing the basic functions, it plays the role of simplifying the structure and reducing the cost.
[0005] The technical and economic effects brought about by the present invention are as follows: the steering trapezoidal arm and the steering push-pull arm are welded or movably connected on the outside of the outer cylinder to realize the steering trapezoidal structural requirements and the steering working principle, with a simple structure and low cost; linear bearings and / or needle bearings are installed between the outer cylinder and the inner cylinder to realize axial relative sliding, which can reduce wear, increase the service life of the shock absorber or reduce maintenance costs; the shock absorber is used in the single front wheel vehicle and light vehicle double front wheel steering suspension system, with a simple structure, low cost, few failures, and increased service life, and has high technical and economic value.
[0006] The specific implementation scheme is described in detail below with reference to the accompanying drawings BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 This is a schematic diagram of the appearance and structure of the hydraulic front shock absorber with steering control.
[0008] Figure 2Schematic diagram of the internal structure of the hydraulic front shock absorber with steering control.
[0009] Figure 3 It is a schematic diagram of the structure of the inner tube (1).
[0010] Figure 4 The cross-sectional view of the outer cylinder (4)
[0011] Figure 5 Schematic diagram of the flow control disc (7)
[0012] Figure 6 It is a schematic diagram of the structure of the limit head (6).
[0013] Figure 7 It is a schematic diagram of an application example of dual front wheel steering and suspension structure. DETAILED DESCRIPTION
[0014] The following is combined with Figure 1 and attached Figure 2 The relative positions, structures and connection relationships of the various parts of a hydraulic front shock absorber with a steering control are described. The hydraulic front shock absorber with a steering control is composed of an inner cylinder (1), an outer cylinder (4), a linear bearing or / and a needle bearing (5), an inner coil spring (2), an outer coil spring (3), hydraulic oil, a flow control disc (7), a limit head (6), a limit bolt (8) and a sealing member. The feature of the hydraulic front shock absorber is that the outer surface of the outer cylinder (4) is welded or movably connected to a steering trapezoidal arm (4-2) and a steering push-pull arm (4-1) so as to connect the steering The linkage and steering control of the left and right front wheels when the transverse tie rod is used conforms to the requirements of the steering trapezoidal structure and the steering working principle; a linear bearing or / and a needle bearing (5) are installed between the outer cylinder (4) and the inner cylinder (1) to reduce the wear of the relative sliding between the inner cylinder and the outer cylinder, so as to increase the life of the shock absorber; an O-ring, a skeleton oil seal and a dustproof oil seal are installed in the upper end of the outer cylinder (4) to prevent the leakage of hydraulic oil; a plug structure is designed at the lower end of the inner cylinder (1), and a central hole and 2 to 20 small through holes in a circumferential array are opened on the plug, such as Figure 3 As shown, in order to position and allow the hydraulic oil to flow; Figure 2A floating flow control disc (7) and a limit head (6) are installed at the bottom of the inner cylinder (1) shown, and are movably connected, limited and guided by bolts (8), so that the hydraulic oil in the oil chamber can flow smoothly from the large oil chamber (9) to the small oil chamber (10) when the spring is compressed. When the inner and outer coil springs return to their original positions, the flow control disc (7) is pushed down by the hydraulic oil to block part of the channel, thereby increasing the damping force of the hydraulic oil to eliminate the elastic potential energy of the spring and achieve the purpose of shock absorption. A small through hole is opened on the cylinder body of the lower section of the inner cylinder (1) for the flow of hydraulic oil. The lower end of the inner cylinder (1) and the lower end of the outer cylinder (4), the flow control disc (7) and the limit head (6) are movably connected, limited and guided by bolts (8). The outer coil spring (3) is sleeved on the upper part of the inner cylinder (1), and the inner coil spring (2) is installed inside the inner cylinder (1) to bear the load and alleviate the impact of the road surface; a sealing gasket and a plug are installed on the upper end of the inner cylinder (1) to prevent oil leakage; the disc brake cylinder or the drum brake disc is installed on the fixing plate (4-3) welded on the outer cylinder (4), the disc brake disc or the brake drum is installed on the front wheel, and then installed together with the bearing and the front wheel shaft (11) into the shaft hole at the lower end of the outer cylinder (4), and fixed with a locking nut to achieve front wheel braking and rotation; the shock absorber is used for the front suspension and steering system of motor vehicles and non-motor vehicles, and while achieving basic functions, it plays a role in simplifying the structure and reducing the cost.
[0015] Figure 3 The schematic diagram of the structure of the inner cylinder (1) is shown in FIG. The inner cylinder (1) has a central hole and a circumferential array of through holes at the bottom, which respectively play the role of positioning and hydraulic oil circulation. A through hole is opened on the lower cylinder body to facilitate the circulation of hydraulic oil. After the inner coil spring (2) is placed in the inner cylinder (1), a sealing gasket and a plug are installed at the upper end.
[0016] Figure 4 The outer cylinder (4) is a cross-sectional view of the cylinder body. An O-ring groove and a frame oil seal are machined inside the upper end of the cylinder body; a sealing plate is provided at the lower end and a center hole is opened to seal the hydraulic oil and position the cylinder body; a front wheel axle fixing hole is opened at the lower end; Figure 1 The lower section of the outer cylinder (4) shown is welded with a fixing plate (4-3) for connecting a disc brake cylinder or a drum brake disc, the outer surface of the upper section of the outer cylinder (4) is welded or movably connected to a steering push-pull arm (4-1), and the outer surface of the lower section of the outer cylinder (4) is welded or movably connected to a steering trapezoidal arm (4-2), and the angle of the steering trapezoidal arm (4-2) on the outer cylinder is consistent with the requirements of the steering trapezoidal structure and the steering working principle.
[0017] Figure 5 The schematic diagram of the flow control disc (7) is a schematic diagram of the flow control disc (7). The flow control disc (7) has a central through hole for positioning and guiding.
[0018] Figure 6The schematic diagram of the structure of the limit head (6) is shown in FIG. The upper end is a hexagonal head, which is convenient for tool installation and removal; the lower section is an inverted frustum, which is convenient for bearing the inner coil spring (2) and is conducive to the hydraulic oil pushing the flow control disc (7) to block part of the oil discharge channel; the center of the limit head (6) is an internal threaded through hole, which is convenient for connection and positioning with the bolt (8).
[0019] Figure 7 The present invention is a schematic diagram of an application example of a dual front wheel steering and suspension structure. When a hydraulic front shock absorber with a steering control is used in a dual front wheel steering and suspension structure, two shock absorbers are used, and the left and right steering trapezoidal arms (4-2) need to be symmetrical, while complying with the steering trapezoidal structure requirements and the steering working principle.
Claims
1. A hydraulic front shock absorber with a steering control, comprising a shock absorber inner cylinder (1), an outer cylinder (4), a linear bearing or / and a needle bearing (5), an inner coil spring (2), an outer coil spring (3), hydraulic oil, a flow control disc (7), a stopper head (6), a stopper bolt (8) and a seal, wherein the characteristics are: The outer surface of the outer cylinder (4) is welded or movably connected with a steering trapezoidal arm (4-2) and a steering push-pull arm (4-1), and the left and right wheel steering linkage and steering control are realized through a steering tie rod. A fixing plate (4-3) is welded on the outer cylinder (4) to install a disc brake cylinder or a drum brake disc. The disc brake disc or brake drum is installed on the front wheel and then installed together with a bearing and a front wheel shaft (11) into the shaft hole at the lower end of the outer cylinder (4) and fixed with a locking nut to realize front wheel braking and rotation. A linear bearing or / and a needle bearing (5) is installed between the outer cylinder (4) and the inner cylinder (1) to enable the inner cylinder (1) and the outer cylinder (4) to move relative to each other up and down. Dynamic wear is reduced to extend the life of the shock absorber. A central hole and 2 to 20 through holes in a circumferential array are opened at the lower end of the inner cylinder (1) to respectively locate and supply hydraulic oil flow. A floating flow control disc (7) and a limit head (6) are installed inside the lower end of the inner cylinder (1), and are movably connected and limited by a limit bolt (8) so that the hydraulic oil can flow smoothly when the coil spring is compressed and a hydraulic damping force is generated when the coil spring returns to its original position to eliminate the elastic potential energy of the spring and achieve the purpose of shock absorption. A through hole is opened on the cylinder body of the lower section of the inner cylinder (1) to supply hydraulic oil flow. The lower end of the inner cylinder (1) and the lower end of the outer cylinder (4) are movably connected and limited by a limit bolt (8).
2. The hydraulic front shock absorber with steering control according to claim 1, characterized in that The outer cylindrical surface of the outer cylinder (4) is welded or movably connected to the steering trapezoidal arm (4-2) and the steering push-pull arm (4-1).
3. The hydraulic front shock absorber with steering control according to claim 1, characterized in that A linear bearing or / and a needle bearing are installed between the inner cylinder (1) and the outer cylinder (4).
4. The hydraulic front shock absorber with steering control according to claim 1, characterized in that A floating flow control disc (7) and a limit head (6) are installed at the bottom of the inner cylinder (1) to achieve the purpose of vibration absorption.
5. The hydraulic front shock absorber with steering control according to claim 1, characterized in that The inner cylinder (1) has a central hole and 2 to 20 through holes in a circumferential array at the lower end, and a through hole is also formed at the lower section of the cylinder.
6. The hydraulic front shock absorber with steering control according to claim 1, characterized in that : The upper part of the inner cylinder (1) is covered with an outer coil spring (3).
7. The hydraulic front shock absorber with steering control according to claim 1, characterized in that :The front shock absorber is used for motor vehicles and non-motor vehicles.