Adjustable shock absorber structure for suspension system

Abstract

The utility model relates to the technical field of vehicle damping, and discloses an adjustable damper structure for a suspension system, which comprises an inner barrel shell and an outer barrel shell positioned on the outer side of the inner barrel shell, and a spring damping mechanism is arranged on the inner side of the inner barrel shell and the inner side of an inner barrel cover in a penetrating manner. A hydraulic damping mechanism is fixedly connected to the position, located at the lower end of the spring damping mechanism, of the inner side of the inner barrel shell, and a lower compression valve is installed at the bottom end of the inner barrel shell in a penetrating mode. The outer barrel shell and the inner barrel shell are filled with different quantities of supplementary hydraulic oil and supplementary compressed gas, and the rigidity of the suspension system can be adjusted by filling different quantities of hydraulic oil and compressed gas; the rigidity of the suspension system can be adjusted by adjusting the pressure of a damping spring in the spring damping mechanism; the vehicle is damped through the spring damping mechanism and the hydraulic damping mechanism at the same time, and the comfort and controllability of the vehicle can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle damping technical field, concretely is adjustable shock absorber structure for suspension system. BACKGROUND

[0002] Suspension system is the general term of all force transmission connecting devices between the frame and axle or wheel of the automobile, its function is to transmit the force and torque between the wheel and frame, and buffer the impact force from uneven road to the frame or vehicle body, and attenuate the vibration caused thereby to ensure the smooth driving of the automobile, it is mainly composed of elastic element, guide mechanism and shock absorber, wherein, the shock absorber restrains the excessive vibration of the spring through the damping effect, and maintains the stability of the vehicle.

[0003] Chinese patent discloses a resistance adjustable shock absorber (authorized announcement number CN211501445U), the patent technology can make the resistance of shock absorber adjustable through the opening degree of solenoid valve, more adapt to the situation of automobile driving through different road surfaces, the guide ring is arranged between the guide and piston rod, thereby avoiding oil leakage, prolonging the service life of shock absorber, but it adopts a separate damping structure, and the damping effect is poor. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a adjustable shock absorber structure for suspension system to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A adjustable shock absorber structure for suspension system, including inner cylinder shell and the outer cylinder shell at the outer side of inner cylinder shell, the outer side of the upper end of inner cylinder shell is installed with inner cylinder cover, the outer side of the lower end of outer cylinder shell is installed with outer cylinder cover, the lower end of outer cylinder cover is fixedly connected with the lifting ring, the inner side of inner cylinder shell and inner cylinder cover is jointly provided with spring damping mechanism, and the lower end of spring damping mechanism is fixedly connected with hydraulic damping mechanism on the inner side of inner cylinder shell, the bottom end of inner cylinder shell is installed with lower compression valve; The hydraulic damping mechanism includes a piston, the inner side of the piston is fixedly connected with a piston rod, the lower end of the piston rod is installed with an upper compression valve, and the upper end of the piston rod is fixedly connected with a flange plate, the piston and the upper compression valve are both slidingly connected on the inner side wall of the inner cylinder shell.

[0007] As a further scheme of the utility model: a cavity structure is arranged between the outer cylinder shell and the inner cylinder shell, hydraulic oil is filled in the lower part of the cavity structure, and compression gas insoluble in the hydraulic oil is filled in the upper part of the cavity structure.

[0008] As a further scheme of the utility model: the upper end of the outer side of the outer cylinder shell is provided with a gas inlet, and the lower end of the outer side of the outer cylinder shell is provided with a fuel inlet.

[0009] As a further scheme of the utility model: the upper compression valve comprises a valve seat, a valve cover matched with the valve seat, a reset spring installed between the valve seat and the valve cover, a screw rod penetrating the inner side of the valve seat and the valve cover, a double-head nut engaged with the upper end of the screw rod, a plurality of upper liquid outlets annularly arranged on the inner side of the valve cover, and a plurality of lower liquid outlets annularly arranged on the inner side of the valve seat.

[0010] As a further scheme of the utility model: the spring damping mechanism comprises a suspender, an inner slide rod fixedly connected to the lower end of the suspender, an outer sleeve rod slidably connected to the lower end of the outer side of the inner slide rod, a damping spring jointly sleeved on the outer side of the inner slide rod and the outer sleeve rod, a lower limiting disc fixedly connected to the lower end of the damping spring, and an upper limiting disc installed on the lower end of the outer side of the suspender.

[0011] As a further scheme of the utility model: the upper end of the double-head nut is engaged with the lower end of the piston rod, and the flange plate is fixedly installed on the lower end of the lower limiting disc through the connecting piece.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model can adjust the rigidity of the suspension system by filling different amounts of supplemental hydraulic oil and supplemental compressed gas into the outer cylinder shell and the inner cylinder shell, adjust the rigidity of the suspension system by adjusting the pressure of the damping spring in the spring damping mechanism, and effectively improve the comfort and maneuverability of the vehicle by simultaneously damping the vehicle through the spring damping mechanism and the hydraulic damping mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the adjustable shock absorber structure for a suspension system.

[0015] Figure 2 It is a sectional structure schematic view of the adjustable shock absorber structure for a suspension system.

[0016] Figure 3 It is a structure schematic view of the spring damping mechanism in the adjustable shock absorber structure for a suspension system.

[0017] Figure 4 It is a structure schematic view of the hydraulic damping mechanism in the adjustable shock absorber structure for a suspension system.

[0018] Figure 5It is a structure diagram of adjustable shock absorber structure for a suspension system.

[0019] In the figure: 1, outer cylinder shell; 2, inner cylinder shell; 3, inner cylinder cover; 4, outer cylinder cover; 5, lifting ring; 6, spring damping mechanism; 61, lifting rod; 62, upper limit disc; 63, inner slide rod; 64, outer sleeve rod; 65, damping spring; 66, lower limit disc; 7, gas filling nozzle; 8, hydraulic damping mechanism; 81, upper compression valve; 811, valve seat; 812, valve cover; 813, double head nut; 814, upper liquid outlet hole; 815, reset spring; 816, screw rod; 817, lower liquid outlet hole; 82, piston; 83, piston rod; 84, flange plate; 9, lower compression valve; 10, oil filling nozzle. DETAILED DESCRIPTION

[0020] Please refer to Figures 1 to 5 , the utility model discloses a kind of adjustable shock absorber structure for a suspension system, including inner cylinder shell 2 and the outer cylinder shell 1 located at the outer side of inner cylinder shell 2, the outer side of the upper end of inner cylinder shell 2 is equipped with inner cylinder cover 3, the outer side of the lower end of outer cylinder shell 1 is equipped with outer cylinder cover 4, the lower end of outer cylinder cover 4 is fixedly connected with lifting ring 5, the upper portion of inner cylinder shell 2 can be opened by inner cylinder cover 3, to further take out spring damping mechanism 6 and hydraulic damping mechanism 8, the lower portion of outer cylinder shell 1 can be opened by outer cylinder cover 4, to further take out lower compression valve 9, facilitate overhaul;The lower portion of entire shock absorber structure can be installed on the suspension system of vehicle by lifting ring 5;The inner side of inner cylinder shell 2 and inner cylinder cover 3 is jointly penetrated with spring damping mechanism 6, and the lower end of spring damping mechanism 6 is fixedly connected with hydraulic damping mechanism 8 in the inner side of inner cylinder shell 2, and the bottom end of inner cylinder shell 2 is penetrated with lower compression valve 9;Cavity structure is arranged between outer cylinder shell 1 and inner cylinder shell 2, hydraulic oil is filled in the lower portion of cavity structure, and compression gas, such as compressed nitrogen, compressed argon, that is not dissolved in hydraulic oil is filled in the upper portion of cavity structure;The lifting speed of hydraulic damping mechanism 8 can be controlled by hydraulic oil and compression gas, to realize the effect of shock absorption and shock isolation;The upper end of the outer side of outer cylinder shell 1 is provided with gas filling nozzle 7, and the lower end of the outer side of outer cylinder shell 1 is provided with oil filling nozzle 10, the cavity structure between outer cylinder shell 1 and inner cylinder shell 2 can be supplemented with hydraulic oil by oil filling nozzle 10, the cavity structure between outer cylinder shell 1 and inner cylinder shell 2 can be supplemented with compression gas by gas filling nozzle 7, the stiffness of suspension system can be adjusted by filling different amounts of hydraulic oil and compression gas, to further improve the comfort and maneuverability of vehicle.

[0021] In Figure 2 And Figure 3In the suspension system, the spring damping mechanism 6 includes a suspension rod 61. The lower end of the suspension rod 61 is fixedly connected to an inner slide rod 63. The lower end of the outer side of the inner slide rod 63 is slidably connected to an outer slide rod 64. The outer sides of the inner slide rod 63 and the outer slide rod 64 are jointly sleeved with a damping spring 65. The lower end of the damping spring 65 is fixedly connected to a lower limit plate 66. The lower end of the outer side of the suspension rod 61 is equipped with an upper limit plate 62. The damping spring 65 is located between the upper limit plate 62 and the lower limit plate 66. By adjusting the position of the upper limit plate 62 on the suspension rod 61, the pressure of the damping spring 65 can be adjusted, thereby adjusting the stiffness of the suspension system.

[0022] exist Figure 2 and Figure 4 In the hydraulic damping mechanism 8, a piston 82 is included. A piston rod 83 is fixedly connected through the inner side of the piston 82. An upper compression valve 81 is installed at the lower end of the piston rod 83, and a flange 84 is fixedly connected at the upper end of the piston rod 83. The piston 82 and the upper compression valve 81 are both slidably connected to the inner wall of the inner cylinder shell 2. The piston 82 and the upper compression valve 81 divide the interior of the inner cylinder shell 2 into three parts: the lower part is between the upper compression valve 81 and the lower compression valve 9, which is filled with hydraulic oil; the middle part is between the upper compression valve 81 and the lower compression valve 9, which contains some hydraulic oil; and the upper part of the upper compression valve 81 has no hydraulic oil, meaning that the spring damping mechanism 6 has no contact with the hydraulic oil.

[0023] exist Figure 4 and Figure 5In the middle, the upper compression valve 81 includes a valve seat 811 and a valve cover 812 that matches the valve seat 811. A return spring 815 is installed between the valve seat 811 and the valve cover 812. A screw 816 passes through the inner side of both the valve seat 811 and the valve cover 812. A double-ended nut 813 is engaged with the upper end of the screw 816. Several upper liquid outlet holes 814 are formed in a ring on the inner side of the valve cover 812, and several lower liquid outlet holes 817 are formed in a ring on the inner side of the valve seat 811. The upper end of the double-ended nut 813 is engaged with the lower end of the piston rod 83, so that the upper compression valve 81 is mounted on the piston rod 83. The flange 84 is fixedly mounted on the lower end of the lower limit plate 66 through a connecting piece, so that the hydraulic damping mechanism 8 and the spring damping mechanism 6 are mounted together. The upper liquid outlet holes 814 and The lower outlet holes 817 are staggered. When the valve cover 812 and valve seat 811 are tightly fitted together by the elastic force of the return spring 815, the upper outlet hole 814 and the lower outlet hole 817 do not flow between each other. That is, the hydraulic oil is blocked by the valve seat 811 and the valve cover 812 and cannot flow from the lower part of the valve seat 811 to the upper part of the valve cover 812. Under normal conditions, the distance between the double-ended nut 813 and the screw 816 is greater than the height between the valve cover 812 and the valve seat 811. When the hydraulic oil impacts the valve cover 812 and the valve seat 811, the return spring 815 is pulled, and the valve cover 812 and the valve seat 811 move towards or opposite each other along the screw 816, so that the hydraulic oil can flow between the upper outlet hole 814 and the lower outlet hole 817. The working principle of the lower compression valve 9 is the same as that of the hydraulic damping mechanism 8.

[0024] The working principle of this utility model is as follows: First, the upper end of the hanger 61 is installed on the vehicle body structure, and the hanger ring 5 is installed on the vehicle suspension system; then, the lower part of the cavity structure is filled with hydraulic oil, the upper part of the cavity structure is filled with compressed gas that is insoluble in hydraulic oil, and the inner cylinder shell 2 is filled with hydraulic oil between the upper compression valve 81 and the lower compression valve 9; a portion of hydraulic oil is filled between the upper compression valve 81 and the lower compression valve 9.

[0025] When the vehicle is in motion, the suspension rod 61 is subjected to increased downward pressure due to bumps. The suspension rod 61 presses down on the upper limit plate 62 and the inner slide rod 63, the shock absorber spring 65 is compressed, the inner slide rod 63 slides inward to the inner side of the outer sleeve rod 64, and at the same time the entire spring shock absorber mechanism 6 also slides downward inside the inner cylinder shell 2, thereby playing a shock absorption role.

[0026] When the spring damping mechanism 6 slides downward, it pushes the entire hydraulic damping mechanism 8 downward, causing the lower part of the upper compression valve 81 to be resisted by hydraulic oil. The hydraulic oil pushes the valve cover 812 upward from the lower outlet hole 817. The valve cover 812 moves upward along the screw 816, causing the valve cover 812 and the valve seat 811 to separate. At the same time, the return spring 815 is subjected to tension. At this time, the hydraulic oil flows from the lower outlet hole 817 into the upper outlet hole 814, and then into the cavity between the upper compression valve 81 and the piston 82. Due to the sealing and blocking effect of the piston 82, the hydraulic oil can no longer flow upward, thus playing a damping role again.

[0027] When the hydraulic damping mechanism 8 slides downward, the hydraulic oil between the upper compression valve 81 and the lower compression valve 9 is pressurized, causing a portion of the hydraulic oil to enter the lower cavity structure between the outer cylinder shell 1 and the inner cylinder shell 2 through the lower compression valve 9. The hydraulic oil in the lower cavity structure pushes the compressed gas in the upper cavity upward, and the compressed air becomes smaller under pressure, thus playing a damping role again.

[0028] Conversely, when the downward pressure on the boom 61 decreases, the compressed air expands, pushing the hydraulic oil in the lower cavity between the outer shell 1 and the inner shell 2 downwards. The hydraulic oil pushes the lower compression valve 9 downwards, causing some hydraulic oil to enter between the upper compression valve 81 and the lower compression valve 9. When the hydraulic oil between the upper compression valve 81 and the lower compression valve 9 is subjected to an upward thrust, it pushes the hydraulic damping mechanism 8 and the spring damping mechanism 6 to move upwards. At the same time, the outer sleeve rod 64 inside the spring damping mechanism 6 returns to its original position upwards, causing the boom 61 to move upwards and thus return to its original position. This effectively reduces vehicle bumps and improves vehicle comfort and handling.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable shock absorber structure for a suspension system, comprising an inner shell (2) and an outer shell (1) located outside the inner shell (2), wherein an inner cover (3) is installed on the outer side of the upper end of the inner shell (2), and an outer cover (4) is installed on the outer side of the lower end of the outer shell (1), and a lifting ring (5) is fixedly connected to the lower end of the outer cover (4), characterized in that, A spring damping mechanism (6) is provided through the inner side of the inner cylinder shell (2) and the inner cylinder cover (3), and a hydraulic damping mechanism (8) is fixedly connected to the lower end of the spring damping mechanism (6) on the inner side of the inner cylinder shell (2). A lower compression valve (9) is installed through the bottom end of the inner cylinder shell (2). The hydraulic damping mechanism (8) includes a piston (82), and a piston rod (83) is fixedly connected through the inner side of the piston (82). An upper compression valve (81) is installed at the lower end of the piston rod (83), and a flange (84) is fixedly connected at the upper end of the piston rod (83). The piston (82) and the upper compression valve (81) are both slidably connected to the inner wall of the inner cylinder shell (2).

2. The adjustable shock absorber structure for a suspension system according to claim 1, characterized in that, A cavity structure is provided between the outer shell (1) and the inner shell (2). The lower part of the cavity structure is filled with hydraulic oil, and the upper part of the cavity structure is filled with compressed gas that is insoluble in hydraulic oil.

3. The adjustable shock absorber structure for a suspension system according to claim 1, characterized in that, An air inlet (7) is provided at the upper end of the outer side of the outer shell (1), and an oil inlet (10) is provided at the lower end of the outer side of the outer shell (1).

4. The adjustable shock absorber structure for a suspension system according to claim 1, characterized in that, The upper compression valve (81) includes a valve seat (811) and a valve cover (812) that matches the valve seat (811). A return spring (815) is installed between the valve seat (811) and the valve cover (812). A screw (816) passes through the inner side of the valve seat (811) and the valve cover (812). A double-ended nut (813) is engaged at the upper end of the screw (816). A plurality of upper liquid outlet holes (814) are opened in a ring on the inner side of the valve cover (812). A plurality of lower liquid outlet holes (817) are opened in a ring on the inner side of the valve seat (811).

5. The adjustable shock absorber structure for a suspension system according to claim 1, characterized in that, The spring damping mechanism (6) includes a suspension rod (61), the lower end of which is fixedly connected to an inner slide rod (63), the lower end of which is slidably connected to an outer slide rod (64), the outer sides of which are both sleeved with a damping spring (65), the lower end of which is fixedly connected to a lower limit plate (66), and the lower end of which is installed with an upper limit plate (62).

6. The adjustable shock absorber structure for a suspension system according to claim 4, characterized in that, The upper end of the double-ended nut (813) is engaged with the lower end of the piston rod (83), and the flange (84) is fixedly installed at the lower end of the lower limit plate (66) by a connector.

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