CN117028470A

CN117028470A - Automobile suspension shock absorber

Info

Publication number: CN117028470A
Application number: CN202311123520.7A
Authority: CN
Inventors: 杨军; 吕伟杰; 吕春杰; 张一威
Original assignee: Zhejiang Zhansheng Technology Co ltd
Current assignee: Zhejiang Zhansheng Technology Co ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2023-11-10

Abstract

The invention relates to the technical field of automobile suspension shock absorption, in particular to an automobile suspension shock absorber. Including the cylinder body, the cylinder body includes outer cylinder body and interior cylinder body, interior cylinder body is located in the outer cylinder body and two tops are sealed through the sealing member, the interior piston rod that is equipped with of sealing member, in the interior cylinder body is located to piston rod one end and end connection have the extension post, the multiunit spout has been seted up to extension post surface, still includes: the buffer assembly is arranged at one end of the extension column and comprises a piston provided with a cavity, and a plurality of groups of arc grooves are circumferentially and equidistantly arranged on the upper surface of the piston; the invention provides an automobile suspension shock absorber, which is characterized in that a buffer component is arranged to be suitable for the flow of oil in a lower cavity in different bumpy road sections to an upper cavity, so that a piston rod can slowly fall all the time, the damping force applied to the piston rod is in an optimal range to overcome the vibration of an automobile, the stability of the automobile body is optimal, and a passenger obtains good comfort level.

Description

Automobile suspension shock absorber

Technical Field

The invention relates to the technical field of automobile suspension shock absorption, in particular to an automobile suspension shock absorber.

Background

The working principle of the hydraulic shock absorber is that when the frame (or the vehicle body) and the axle are subjected to vibration and have relative movement, the piston in the shock absorber moves up and down, and oil in the cavity of the shock absorber flows into the other cavity from one cavity through different holes repeatedly; at this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form damping force on vibration, so that the automobile vibration energy is converted into oil heat energy, and then absorbed by the shock absorber and emitted into the atmosphere. When the oil liquid channel section and other factors are unchanged, the damping force increases and decreases along with the relative movement speed between the vehicle frame and the vehicle axle (or the vehicle wheels), and is related to the viscosity of the oil liquid.

The existing shock absorber generally utilizes a pore canal with a fixed size arranged on a piston to realize the flow of oil in a cavity of the piston; when the automobile jolts through the eminence, the piston rod pushes down the in-process, can't control the fluid flow of the cavity upwards cavity under the piston according to the road section condition of jolting, can't fine control piston rod moves down the speed to can't reach best damping force and overcome the automobile vibration, make the stability of automobile body reach the best, the person of taking also can't obtain the comfortable experience of taking the best.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides the automobile suspension shock absorber which can effectively solve the problem that the automobile in the prior art cannot control the oil flow of the upper chamber of the lower chamber of the piston in different bumpy road sections to control the downward moving speed of the piston rod so as to achieve the optimal damping force, thereby overcoming the vibration of the automobile.

In order to achieve the above purpose, the invention is realized by the following technical scheme:

the invention provides an automobile suspension shock absorber, which comprises a cylinder body, wherein the cylinder body comprises an outer cylinder body and an inner cylinder body, the inner cylinder body is arranged in the outer cylinder body, the two tops of the inner cylinder body are sealed through a sealing piece, a piston rod is arranged in the sealing piece in a sliding manner, one end of the piston rod is arranged in the inner cylinder body, the end part of the piston rod is connected with an extension column, a plurality of groups of sliding grooves are formed in the outer surface of the extension column, and the automobile suspension shock absorber further comprises:

the buffering assembly is arranged at one end of the extending column and comprises a piston provided with a cavity, a plurality of groups of arc grooves are formed in circumferential equidistance on the upper surface of the piston, a plurality of groups of conical holes are formed in the bottom surface of the arc groove in a penetrating mode to the cavity, a plurality of groups of movable grooves are formed in the middle of the upper surface of the piston in a penetrating mode, the movable grooves are communicated with the sliding grooves, guide rods are arranged in the movable grooves and the sliding grooves in a sliding mode, one end of each guide rod is connected with an arc plug, a plurality of groups of conical plugs are arranged at the bottom of each arc plug, the other ends of the guide rods are connected through limiting plates, a hollow column is arranged in the middle of the cavity, and shielding pieces are arranged outside the hollow column in a rotating mode.

Further, a plurality of groups of valve holes are formed in the piston, close to the outer circumference, in a penetrating mode, and one-way valves are arranged in the valve holes.

Further, the outer surface of the hollow column is provided with memory metal, and the memory metal is of an arc-shaped bending structure.

Further, the shielding piece comprises a plurality of groups of arc blocks distributed at equal intervals in the circumferential direction, the plurality of groups of arc blocks are connected with a rotating ring through connecting rods, and the rotating ring is sleeved on the outer surface of the hollow column.

Further, a rotating groove is formed in the lower portion of the inner wall of the rotating ring, and the memory metal is in extrusion fit with the rotating groove.

Further, the buffer assembly divides the inner cylinder body into an upper chamber and a lower chamber, a space between the outer cylinder body and the inner cylinder body forms a C chamber, and the lower chamber and the C chamber realize bidirectional flow of oil through the regulating valve.

Further, the conical plug is matched with the size of the conical hole, and the arc-shaped plug is matched with the size of the arc-shaped groove.

Further, the arc-shaped block and the arc-shaped plug are identical in shape.

Further, the limiting disc is arranged at the bottom of the piston and connected with a plurality of groups of guide rods.

Further, a plurality of groups of pore canals are formed on the lower surface of the piston penetrating into the cavity.

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

the invention provides an automobile suspension shock absorber, which is characterized in that a buffer component is arranged to be suitable for the flow of oil in a lower cavity in different bumpy road sections to an upper cavity, so that a piston rod can slowly fall all the time, the damping force applied to the piston rod is in an optimal range to overcome the vibration of an automobile, the stability of the automobile body is optimal, and a passenger obtains good comfort level.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of a buffer assembly according to the present invention;

FIG. 3 is a schematic view of the internal structure of the piston according to the present invention;

FIG. 4 is a schematic view of an exploded view of a cushioning assembly according to the present invention;

FIG. 5 is a schematic view of a tapered bore section and a tapered plug structure of the present invention;

FIG. 6 is a schematic view of the mating structure of the hollow post and shield of the present invention;

FIG. 7 is a schematic view of the hollow column and shield of the present invention in a disassembled configuration;

fig. 8 is an enlarged view of fig. 7 at a in accordance with the present invention.

Reference numerals in the drawings represent respectively: 1. an outer cylinder; 11. a chamber C; 2. an inner cylinder; 21. an upper chamber; 22. a lower chamber; 3. a piston rod; 31. an extension column; 311. a chute; 4. a buffer assembly; 41. a piston; 411. a valve hole; 412. an arc-shaped groove; 413. a tapered bore; 414. a movable groove; 42. a guide rod; 43. an arc-shaped plug; 44. a conical plug; 45. a limiting disc; 46. a hollow column; 461. a memory metal; 47. a shield; 471. an arc-shaped block; 472. a rotating ring; 4721. the groove is rotated.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention is further described below with reference to examples.

Examples:

referring to fig. 1-8, an automobile suspension damper comprises a cylinder body, wherein the cylinder body comprises an outer cylinder body 1 and an inner cylinder body 2, the inner cylinder body 2 is arranged in the outer cylinder body 1, the two tops of the inner cylinder body 2 are sealed by sealing elements, it is worth to be noted that the outer cylinder body 1 and the inner cylinder body 2 are of cylindrical structures, oil liquid is filled in the inner cylinder body 2 and the outer cylinder body 1, and the upper part of the outer cylinder body 1 is filled with nitrogen;

a piston rod 3 is arranged in the sealing piece in a sliding manner, one end of the piston rod 3 is arranged in the inner cylinder body 2, the end part of the piston rod 3 is connected with an extension column 31, a plurality of groups of sliding grooves 311 are formed in the outer surface of the extension column 31, the piston rod 3 and the inner cylinder body 2 are coaxially arranged, and the extension column 31 and the piston rod 3 are coaxially arranged; by arranging a plurality of groups of sliding grooves 311, the guiding mechanism is used for guiding other parts.

Besides, the hydraulic oil pump further comprises a buffer component 4 arranged at one end of the extension column 31, the buffer component 4 divides the inner cylinder body 2 into an upper chamber 21 and a lower chamber 22, a space between the outer cylinder body 1 and the inner cylinder body 2 forms a C chamber 11, and the lower chamber 22 and the C chamber 11 realize bidirectional flow of oil through a regulating valve.

Through setting up buffer unit 4 for the flow of fluid in control upper chamber 21 and the lower chamber 22 realizes that piston rod 3 rises fast, descends slowly's purpose, reaches under the state of jolting, can play the purpose to the car shock attenuation buffering well.

Specifically, the buffer assembly 4 includes a piston 41 with a cavity, a plurality of groups of valve holes 411 are formed in the upper surface of the piston 41 near the outer circumference in a penetrating manner, and a one-way valve is installed in the valve holes 411.

The check valve is used for controlling oil to flow from the lower chamber 22 to the upper chamber 21, the oil cannot flow from the upper chamber 21 to the lower chamber 22, when the piston rod 3 is pulled upwards, the check valve is opened, the oil rapidly flows from the lower chamber 22 to the upper chamber 21, the upward damping force of the piston rod 3 is small, and the piston rod 3 is rapidly lifted;

a plurality of groups of arc grooves 412 are circumferentially and equidistantly formed on the upper surface of the piston 41, a plurality of groups of conical holes 413 are formed in the bottom surface of the arc grooves 412 penetrating into the cavity, the conical holes 413 are formed in a mode of large upper opening and small lower opening, and the conical holes 413 are used for controlling the flow of oil from the lower chamber 22 to the upper chamber 21;

a plurality of groups of movable grooves 414 are formed in the middle of the upper surface of the piston 41 in a penetrating manner, the movable grooves 414 are communicated with the sliding grooves 311, and the movable grooves 414 are formed for the movement of other parts;

the lower surface of the piston 41 penetrates through the cavity to form a plurality of groups of pore canals; and a plurality of groups of holes are formed, so that oil can pass through the holes from the lower chamber 22 and then enter the upper chamber 21 through the conical holes 413, and the upper chamber 21 and the lower chamber 22 can be communicated.

The movable groove 414 and the sliding groove 311 are slidably provided with a guide rod 42, the guide rod 42 is of an L-shaped structure, the guide rod 42 consists of a transverse part and a vertical part, one end of the transverse part of the guide rod 42 is connected with an arc-shaped plug 43, the bottom of the arc-shaped plug 43 is provided with a plurality of groups of conical plugs 44, the conical plugs 44 are matched with the conical holes 413 in size, and the arc-shaped plug 43 is matched with the arc-shaped groove 412 in size; the bottom of the arc-shaped plug 43 can be rounded to facilitate the arc-shaped plug 43 to be better snapped into the arc-shaped slot 412.

One end of the vertical part of the plurality of groups of guide rods 42 is connected with one another through a limiting disc 45, and the limiting disc 45 is arranged below the bottom of the piston 41 and is connected with the plurality of groups of guide rods 42;

the vertical part of the guide rod 42 slides in the sliding groove 311 and the movable groove 414, and is used for controlling the up-and-down movement of the arc-shaped plug 43, and further controlling the up-and-down movement of the conical plug 44 in the conical hole 413, so as to control the exposed amount of the conical hole 413, and realize the amount of the oil flow from the lower chamber 22 to the upper chamber 21;

referring to fig. 5, when the pressure in the lower chamber 22 is too high, the limiting disc 45 is pushed to move upwards, so that the arc-shaped plug 43 moves upwards to be separated from the arc-shaped groove 412, the conical plug 44 is driven to be separated from the conical hole 413, the degree of the conical plug 44 separated from the conical hole 413 is controlled according to the pressure intensity, the pressure intensity generated by different bumpy road sections is adapted, the oil flow of the upper chamber 21 of the lower chamber 22 is realized, and the best damping effect is achieved.

The hollow column 46 is arranged in the middle of the cavity, and it is worth noting that the hollow column 46 is of a hollow structure, and the movable groove 414 is positioned in the inner circle of the hollow column 46, so that the vertical part of the guide rod 42 is not influenced to move up and down; memory metal 461 is arranged on the outer surface of the hollow column 46 near the lower part, and the memory metal 461 has an arc-shaped bending structure. By providing the memory metal 461 near the lower portion, the temperature can be better sensed for deformation, thereby realizing the movement of other parts.

Initially, the memory metal 461 is bent and folded, and as the temperature of the oil in the lower chamber 22 is increased by the compression of the piston rod 3, the memory metal expands, and when the temperature is restored to the initial temperature, the memory metal 461 is restored to the initial bent and folded state.

Further, a shutter 47 is rotatably provided outside the hollow column 46; the shielding member 47 comprises a plurality of groups of arc-shaped blocks 471 which are circumferentially and equidistantly distributed, and the arc-shaped blocks 471 and the arc-shaped plugs 43 have the same shape; the arcuate blocks 471 serve to block the sets of orifices and tapered holes 413, thereby restricting the flow of oil from the lower chamber 22 to the upper chamber 21.

The plurality of groups of arc blocks 471 are connected with the rotating ring 472 through connecting rods, the rotating ring 472 is sleeved on the outer surface of the hollow column 46, and the rotating ring 472 is in rotary fit with the hollow column 46; the lower part of the inner wall of the rotating ring 472 is provided with a rotating groove 4721, the memory metal 461 is arranged in the rotating groove 4721, one end of the memory metal 461 is contacted with the inner wall of the rotating groove 4721, and the memory metal 461 is matched with the rotating groove 4721 in an extrusion mode. When the temperature rises, the memory metal 461 expands and extrudes the inner wall of the rotary groove 4721, so that the rotary ring 472 rotates to drive the arc blocks 471 to rotate, the opening quantity of the conical holes 413 and the pore channels can be controlled, the flow of oil can be adapted to different bumpy road conditions, and the proper damping can be controlled to achieve a good buffering and damping effect.

Working principle: when the automobile is in a normal pit bumpy road section, the piston rod 3 moves downwards to compress the oil in the lower chamber 22, at the moment, the pressure of the lower chamber 22 is increased, the limiting disc 45 is pushed to move upwards, the guide rod 42 moves upwards to different degrees according to different bumpy degrees, so that the conical plugs 44 open the gaps of the conical holes 413, meanwhile, the temperature is increased, the memory metal 461 is unfolded to a certain extent, the arc-shaped blocks 471 are rotated to open a certain number (the certain number is smaller than the total number) of pore channels and the conical holes 413, the oil in the lower chamber 22 enters the upper chamber 21 from the certain number of pore channels along the opened conical holes 413, and the damping force at the moment just plays a good shock absorption and buffering effect.

When the automobile passes through the large pit section, at this moment, the vibration amplitude is overlarge, the piston rod 3 has the tendency of rapidly downwards moving to compress the oil liquid of the lower chamber 22, the pressure difference between the upper chamber 21 and the lower chamber 22 is overlarge, the limiting disc 45 cannot rapidly react and rise, at this moment, the temperature of the oil liquid is instantaneously raised because the piston rod 3 rapidly upwards moves, so that the expansion range of the memory metal 461 is enlarged, a plurality of pore channels and a plurality of conical holes 413 are rapidly opened, the oil liquid can enter the upper chamber 21 from the pore channels and the plurality of conical holes 413 to release pressure, the damping force is controlled to be just suitable, and the shock absorption and buffering effects are optimal.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an automobile suspension bumper shock absorber, includes the cylinder body, the cylinder body includes outer cylinder body (1) and interior cylinder body (2), interior cylinder body (2) are located in outer cylinder body (1) and two tops are sealed through the sealing member, the interior piston rod (3) that is equipped with of sealing member, in cylinder body (2) and end connection have extension post (31) are located to piston rod (3) one end, multiunit spout (311) have been seted up to extension post (31) surface, its characterized in that still includes:

the buffer component (4) is arranged at one end of the extension column (31), the buffer component (4) comprises a piston (41) provided with a cavity, a plurality of groups of arc-shaped grooves (412) are circumferentially equidistant on the upper surface of the piston (41), a plurality of groups of conical holes (413) are formed in the bottom surface of the arc-shaped grooves (412) in a penetrating mode into the cavity, a plurality of groups of movable grooves (414) are formed in the middle of the upper surface of the piston (41) in a penetrating mode, the movable grooves (414) are communicated with the sliding grooves (311), guide rods (42) are slidably arranged in the movable grooves (414) and the sliding grooves (311), one ends of the guide rods (42) are connected with arc-shaped plugs (43), a plurality of groups of conical plugs (44) are arranged at the bottoms of the arc-shaped plugs (43), the other ends of the guide rods (42) are connected through limiting discs (45), hollow columns (46) are arranged in the middle portions in the cavity, and shielding pieces (47) are arranged outside the hollow columns (46).

2. The automobile suspension shock absorber according to claim 1, wherein a plurality of groups of valve holes (411) are formed in the piston (41) near the outer circumference in a penetrating manner, and a one-way valve is arranged in the valve holes (411).

3. An automobile suspension damper according to claim 2, wherein the outer surface of the hollow column (46) is provided with a memory metal (461), and the memory metal (461) has an arc-shaped curved structure.

4. A suspension damper according to claim 3, wherein the shielding member (47) comprises a plurality of groups of arc-shaped blocks (471) circumferentially equidistantly distributed, the plurality of groups of arc-shaped blocks (471) are connected with a rotating ring (472) through connecting rods, and the rotating ring (472) is sleeved on the outer surface of the hollow column (46).

5. The automobile suspension damper according to claim 4, wherein a rotary groove (4721) is formed in the lower portion of the inner wall of the rotary ring (472), and the memory metal (461) is press-fitted to the rotary groove (4721).

6. An automobile suspension damper according to claim 5, characterized in that the buffer assembly (4) divides the inner cylinder (2) into an upper chamber (21) and a lower chamber (22), the space between the outer cylinder (1) and the inner cylinder (2) forming a C-chamber (11), the lower chamber (22) and the C-chamber (11) realizing a bi-directional flow of oil through a regulating valve.

7. An automobile suspension damper according to claim 6, characterized in that the conical plug (44) is adapted to the size of the conical hole (413) and the arcuate plug (43) is adapted to the size of the arcuate slot (412).

8. An automobile suspension damper according to claim 7, wherein the arcuate blocks (471) and arcuate plugs (43) are identical in shape.

9. An automobile suspension damper according to claim 8, characterized in that the limit disc (45) is arranged at the bottom of the piston (41) and is connected with a plurality of sets of guide rods (42).

10. An automobile suspension damper according to claim 9, wherein a plurality of groups of channels are provided through the lower surface of the piston (41) into the cavity.