Buffer device of automobile shock absorber

Abstract

The invention relates to the technical field of shock absorbers, in particular to a buffer device of an automobile shock absorber, which comprises a spring main body, a guide assembly is arranged in the spring main body, and the guide assembly comprises a top plate, a bottom plate and a movable part distributed between the top plate and the bottom plate; the movable part comprises a guide rod and a sleeve, the bottom of the guide rod is located in the sleeve and movably connected with the sleeve, the top of the guide rod is fixed to the top plate, and the bottom of the sleeve is fixed to the bottom plate; lug plates are fixed to the opposite faces of the bottom plate and the top plate, and the spring bodies are distributed between the top plate and the bottom plate; and a heat dissipation damping mechanism is arranged between the sleeve and the guide rod. The hole diameters of the multiple air injection holes distributed at equal intervals are sequentially decreased from top to bottom, the air plug plate moves downwards, the air plug plate is used for sequentially shielding and sealing the air injection holes one by one from top to bottom, the air leakage speed of an inner cavity of the sleeve is reduced, the damping effect is achieved through air in the cavity, and damping and buffering are achieved in cooperation with the spring body.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorbers, in particular to a buffer device for an automobile shock absorber. Background Art

[0002] Shock absorbers are essential components for cars. When they're operating, the piston inside them moves up and down, repeatedly flowing the oil from one cavity through different pores into another. Friction between the pore walls and the oil, as well as internal friction between the oil molecules, dampens the vibrations, converting the car's vibration energy into heat energy, which is then absorbed by the shock absorber and dissipated into the atmosphere. In the prior art, when a shock absorber is used for a long time, a lot of heat will be generated due to friction. If the temperature cannot be cooled well, the service life of the shock absorber will be shortened, resulting in waste.

[0003] Therefore, a buffering device for an automobile shock absorber is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a buffer device for an automobile shock absorber. The present application designs a plurality of equally spaced air jet holes, the apertures of which decrease in sequence from top to bottom. By moving the air block plate downward, the air block plate is used to block and close the air jet holes one by one from top to bottom, thereby reducing the air leakage rate of the internal cavity of the sleeve, utilizing the air inside the cavity to achieve a damping effect, and cooperating with the spring body to achieve shock absorption and buffering, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a buffer device for an automobile shock absorber, comprising a spring body, a guide assembly disposed inside the spring body, and the guide assembly comprising a top plate and a bottom plate and movable parts distributed between the top plate and the bottom plate; The movable part includes a guide rod and a sleeve, wherein the bottom of the guide rod is located inside the sleeve and is movably connected to the sleeve, the top of the guide rod is fixed to the top plate, and the bottom of the sleeve is fixed to the bottom plate; Lugs are fixed to the opposite surfaces of the bottom plate and the top plate, and the main body of the spring is distributed between the top plate and the bottom plate; A heat dissipation damping mechanism is provided between the sleeve and the guide rod; The heat dissipation and damping mechanism includes an air plug plate fixedly connected to the bottom of the guide rod inside the sleeve. The sleeve is provided with air jet holes on the outside that are connected to the internal cavity of the sleeve. The air jet holes are located on the lower side of the air plug plate and are distributed at equal distances. The apertures of several equally distributed air jet holes decrease in sequence from top to bottom. By moving the air plug plate downward, the air plug plate is used to block and close the air jet holes one by one from top to bottom, thereby reducing the air leakage rate of the internal cavity of the sleeve, utilizing the air inside the cavity to achieve a damping effect, and cooperating with the spring body to achieve shock absorption and buffering.

[0006] Preferably, the heat dissipation damping mechanism includes arc-shaped convex strips symmetrically distributed on the outer surface of the guide rod and the upper side of the air plug plate, and the outer side of the arc-shaped convex strips is movably connected to a protrusion designed as a hemispherical structure.

[0007] Preferably, a movable groove 1 is symmetrically opened on the upper end surface of the sleeve, a connecting rod is movably connected in the movable groove 1, and the top of the connecting rod is integrally connected and fixed to the protrusion.

[0008] Preferably, a movable groove 2 is provided inside the sleeve in an offset manner from the movable groove 1, a connecting groove is provided between the movable groove 2 and the movable groove 1, and the movable groove 1, the movable groove 2 and the connecting groove are interconnected to form a Z-shaped structure.

[0009] Preferably, the movable groove 2 is internally movably connected to a limit plate, and the limit plate is provided with staggered holes at equal distances. The jet hole and the movable groove 2 are designed to be connected through the structure, and the staggered hole and the jet hole have the same aperture and correspond one to one. The limit plate is designed to fit the inner wall of the movable groove 2, and a sealing gasket is glued to the side of the limit plate and the inner wall of the movable groove 2 where they fit.

[0010] Preferably, a movable bar is movably connected in the communicating groove, one end of the movable bar is fixed to the top of the limiting plate, and the other end is fixed to the bottom of the connecting rod.

[0011] Preferably, a return spring is provided between the movable groove and the connecting rod, and one end of the return spring is fixed to the inner wall of the movable groove, and the other end is fixed to the side surface of the connecting rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This application designs several equally spaced air holes with decreasing apertures from top to bottom. By moving the air blocker downward, the air blocker blocks and seals the air holes one by one from top to bottom, reducing the rate of air leakage from the internal cavity of the sleeve. The air inside the cavity creates a damping effect, which cooperates with the spring body to achieve shock absorption and buffering. 2. This application can compress and spray the gas inside the sleeve to the outer surface of the spring body by driving the heat dissipation damping mechanism. The surface temperature of the spring body will generate high temperature due to frequent operation. The gas flows through the surface of the spring body, taking away the heat from the surface of the spring body, achieving the heat dissipation effect of the spring body and reducing the metal fatigue caused by high-temperature operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is an overall structural view of the present invention; Figure 2 It is a front view of the overall structure of the present invention; Figure 3 An exploded view of the movable part of the present invention; Figure 4 For the present invention Figure 3 A top view of Figure 5 For the present invention Figure 3 A magnified view of point A; Figure 6 This is a structural view of the heat dissipation damping mechanism of the present invention.

[0015] Description of reference numerals: 1. Spring body; 2. Top plate; 3. Bottom plate; 4. Ear plate; 5. Guide rod; 6. Sleeve; 7. Air plug plate; 8. Arc-shaped convex strip; 9. Movable groove 1; 10. Air jet hole; 11. Limit plate; 12. Offset hole; 13. Movable strip; 14. Protrusion; 15. Connecting rod; 16. Connecting groove; 17. Return spring; 18. Movable groove 2. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figures 1 to 6 , the present invention provides a technical solution: A buffer device for an automobile shock absorber includes a spring body 1, wherein a guide assembly is provided inside the spring body 1, and the guide assembly includes a top plate 2 and a bottom plate 3 and movable parts distributed between the top plate 2 and the bottom plate 3; The movable part includes a guide rod 5 and a sleeve 6. The bottom of the guide rod 5 is located inside the sleeve 6 and is movably connected to the sleeve 6. The top of the guide rod 5 is fixed to the top plate 2, and the bottom of the sleeve 6 is fixed to the bottom plate 3. The opposite surfaces of the bottom plate 3 and the top plate 2 are fixed with ear plates 4, and the spring body 1 is distributed between the top plate 2 and the bottom plate 3; A heat dissipation damping mechanism is provided between the sleeve 6 and the guide rod 5; The heat dissipation and damping mechanism includes an air plug plate 7 fixedly connected to the bottom of the guide rod 5 inside the sleeve 6. The sleeve 6 is provided with an air jet hole 10 on the outside that is connected to the internal cavity of the sleeve 6. The air jet holes 10 are located on the lower side of the air plug plate 7 and are distributed at equal distances. The apertures of the several air jet holes 10 distributed at equal distances decrease from top to bottom. By moving the air plug plate 7 downward, the air plug plate 7 is used to block and close the air jet holes 10 one by one from top to bottom, thereby reducing the air leakage rate of the internal cavity of the sleeve 6, utilizing the air inside the cavity to achieve a damping effect, and cooperating with the spring body 1 to achieve shock absorption and buffering.

[0018] Specifically, the heat dissipation and damping mechanism includes arc-shaped ridges 8 symmetrically distributed on the outer surface of the guide rod 5 and the upper side of the air plug plate 7, and the outer side of the arc-shaped ridges 8 is movably connected to a protrusion 14 with a hemispherical structure design, and the upper end surface of the sleeve 6 is symmetrically provided with a movable groove 9, and a connecting rod 15 is movably connected in the movable groove 9, and the top of the connecting rod 15 is integrally connected and fixed to the protrusion 14.

[0019] Specifically, the interior of the sleeve 6 is offset from the movable groove 1 9 and a movable groove 2 18 is provided. A connecting groove 16 is provided between the movable groove 2 18 and the movable groove 1 9. The movable groove 1 9, the movable groove 2 18 and the connecting groove 16 are interconnected to form a Z-shaped structure. The interior of the movable groove 2 18 is movably connected with a limiting plate 11, and the limiting plate 11 is provided with offset holes 12 at equal distances. The jet hole 10 and the movable groove 2 18 are designed to be through-connected, and the offset hole 12 has the same aperture as the jet hole 10 and corresponds one to one. The limiting plate 11 is designed to fit the inner wall of the movable groove 2 18, and a sealing gasket is glued to the side of the limiting plate 11 where it fits the inner wall of the movable groove 2 18.

[0020] Specifically, a movable bar 13 is movably connected in the connecting groove 16, one end of the movable bar 13 is fixed to the top of the limit plate 11, and the other end is fixed to the bottom of the connecting rod 15. A return spring 17 is provided between the movable groove and the connecting rod 15, and one end of the return spring 17 is fixed to the inner wall of the movable groove, and the other end is fixed to the side of the connecting rod 15.

[0021] Working principle: When the shock absorber buffer device of the present application is installed on a car, and the car is subjected to road bumps and vibrations during driving, the top plate 2 or the bottom plate 3 will be displaced relative to the center, squeezing the spring body 1 between the two, and the elastic force of the spring body 1 will buffer the bump and vibration force. In the process of relative displacement of the top plate 2 and the bottom plate 3, the guide rod 5 and the sleeve 6 will also be displaced relative to each other, and the air plug plate 7 at one end of the guide rod 5 located inside the sleeve 6 moves inside the sleeve 6. During this process, the displacement of the guide rod 5 will drive the arc-shaped ridge 8 fixed to the guide rod 5 to move, and because the protrusion 14 contacts the side of the arc-shaped ridge 8, at this time, under the action of the arc inclination angle of the arc-shaped ridge 8, the displacement of the guide rod 5 will cause the arc-shaped ridge 8 to squeeze the protrusion 14, and at this time, the protrusion 14 will move along the inclination angle of the surface of the arc-shaped ridge 8, and at this time, the protrusion 14 will drive the connecting rod 15 to move inside the movable groove 9 and compress the return spring 17 between the connecting rod 15 and the movable groove 9, and the connecting rod 15 is in the movable groove 9. The internal movement of 9 will drive the movable bar 13 to move inside the connecting groove 16, and then drive the limit plate 11 fixed with the movable bar 13 and inside the movable groove 18 to move. When the limit plate 11 moves, the offset hole 12 on the limit plate 11 is offset from the air injection hole 10 opened on the outside of the sleeve 6. At this time, the air compressed by the air plug plate 7 inside the air cavity slows down the speed of overflowing to the outside through the air injection hole 10, thereby cooperating with the air plug plate 7 to move from top to bottom, blocking the air injection hole 10 with a gradually decreasing aperture size. The combined effect of the two realizes the air pressure resistance to the downward movement of the air plug plate 7, thereby achieving a damping effect, and cooperating with the elastic force of the external spring body 1 to achieve a shock absorption effect. In addition, the over-driven heat dissipation damping mechanism can compress and spray the gas inside the sleeve 6 to the surface of the outer spring body 1 in a direction. The surface temperature of the frequently operated spring body 1 will generate high temperature. The gas flow on the surface of the spring body 1 will take away the heat from the surface of the spring body 1, thereby achieving a heat dissipation effect of the spring body 1 and reducing metal fatigue caused by high temperature operation.

[0022] 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 it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A buffer device for an automobile shock absorber, comprising a spring body (1), characterized in that: A guide assembly is provided inside the spring body (1), and the guide assembly includes a top plate (2), a bottom plate (3), and movable parts distributed between the top plate (2) and the bottom plate (3); The movable part includes a guide rod (5) and a sleeve (6), wherein the bottom of the guide rod (5) is located inside the sleeve (6) and is movably connected to the sleeve (6), the top of the guide rod (5) is fixed to the top plate (2), and the bottom of the sleeve (6) is fixed to the bottom plate (3); Lug plates (4) are fixed to the opposite surfaces of the bottom plate (3) and the top plate (2), and the spring body (1) is distributed between the top plate (2) and the bottom plate (3); A heat dissipation damping mechanism is provided between the sleeve (6) and the guide rod (5); The heat dissipation damping mechanism comprises an air plug plate (7) fixedly connected to the bottom of the guide rod (5) inside the sleeve (6); an air jet hole (10) communicating with the internal cavity of the sleeve (6) is opened on the outside of the sleeve (6); the air jet hole (10) is located on the lower side of the air plug plate (7) and is distributed at equal distances; the apertures of the plurality of air jet holes (10) distributed at equal distances decrease from top to bottom; the air plug plate (7) is moved downward, and the air plug plate (7) is used to block and close the air jet holes (10) one by one from top to bottom, thereby reducing the air leakage rate of the internal cavity of the sleeve (6); utilizing the air inside the cavity to achieve a damping effect; and cooperating with the spring body (1) to achieve shock absorption and buffering.

2. The buffer device of a vehicle shock absorber according to claim 1, characterized in that: The heat dissipation damping mechanism comprises arc-shaped convex strips (8) symmetrically distributed on the outer surface of the guide rod (5) and the upper side of the air plug plate (7), and the outer side of the arc-shaped convex strips (8) is movably connected to a protrusion (14) designed in a hemispherical structure.

3. The buffer device of a vehicle shock absorber according to claim 2, characterized in that: A movable groove (9) is symmetrically formed on the upper end surface of the sleeve (6), a connecting rod (15) is movably connected in the movable groove (9), and the top of the connecting rod (15) is integrally connected and fixed to the protrusion (14).

4. The buffer device of a vehicle shock absorber according to claim 3, characterized in that: A second movable groove (18) is provided inside the sleeve (6) at a position offset from the first movable groove (9), a connecting groove (16) is provided between the second movable groove (18) and the first movable groove (9), and the first movable groove (9), the second movable groove (18) and the connecting groove (16) are interconnected to form a Z-shaped structure.

5. The buffer device of a vehicle shock absorber according to claim 4, characterized in that: The movable groove 2 (18) is internally movably connected to a limit plate (11), and the limit plate (11) is provided with offset holes (12) at equal intervals. The jet hole (10) and the movable groove 2 (18) are designed to be connected through the structure, and the offset hole (12) and the jet hole (10) have the same aperture and correspond to each other. The limit plate (11) is designed to fit the inner wall of the movable groove 2 (18), and a sealing gasket is glued to the side of the limit plate (11) and the inner wall of the movable groove 2 (18).

6. The buffer device of a vehicle shock absorber according to claim 5, characterized in that: A movable bar (13) is movably connected in the communicating groove (16), one end of the movable bar (13) is fixed to the top of the limiting plate (11), and the other end is fixed to the bottom of the connecting rod (15).

7. The buffer device of an automobile shock absorber according to claim 6, characterized in that: A return spring (17) is provided between the movable groove and the connecting rod (15), and one end of the return spring (17) is fixed to the inner wall of the movable groove, and the other end is fixed to the side surface of the connecting rod (15).

Images