CN212177744U

CN212177744U - Self-adaptive hydraulic buffer of shock absorber

Info

Publication number: CN212177744U
Application number: CN202020840373.0U
Authority: CN
Inventors: 陈国强
Original assignee: Guangzhou Duonai Damping Technology Co Ltd
Current assignee: Guangzhou Duonai Damping Technology Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-18
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a self-adaptation hydraulic buffer of bumper shock absorber, including piston rod and stack shell connecting seat and stack shell, stack shell connecting seat and stack shell integrated into one piece, the piston rod inserts inside the stack shell, is equipped with the stack shell end cover at the stack shell front end, and the one end that the piston rod is located the stack shell outside is connected with the unsprung mass of car, stack shell connecting seat inner wall has the recess side, and the recess side is the conical surface of narrow-top-down-width, and the one end that the piston rod is located in the stack shell connecting seat has the piston, and the piston forms conical surface structure with the recess side, still is equipped with spring taper hole structure on the stack shell connecting seat; the side surface of the groove in the connecting seat of the cylinder body is designed into a conical surface, so that the limit compression force applied to the shock absorber is buffered, the shock absorber and a vehicle suspension part and the like are prevented from being greatly impacted, and the riding comfort of a vehicle is improved; meanwhile, the spring stiffness of the expansion valve plate can be arranged in the taper hole structure, so that the self-adaptive hydraulic buffer damping for different vehicle types and different working conditions is realized.

Description

Self-adaptive hydraulic buffer of shock absorber

Technical Field

The utility model relates to a bumper shock absorber technique specifically is a self-adaptation hydraulic buffer of bumper shock absorber.

Background

Shock absorbers are often required in mechanical mechanisms, such as automobile chassis, motorcycles, trains, aircraft landing gear, etc.; the automobile shock absorber is one of the most important parts in a vehicle suspension system, and mainly plays a role in absorbing and dissipating shock and impact energy generated by uneven road surface when a vehicle runs.

When the stroke of a suspension of a traditional vehicle is compressed to the limit during running, the mechanical collision of suspension parts can cause the stress of a shock absorber to be suddenly increased, so that the suspension parts bear impact load, and the service life and reliability of related parts are greatly shortened; if the shock absorber is used in a vehicle for riding, poor riding comfort is caused; such as impact levels to a certain extent or even to the health of the member.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a self-adaptation hydraulic buffer of bumper shock absorber to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a self-adaptation hydraulic buffer of bumper shock absorber, includes piston rod and stack shell connecting seat and stack shell, stack shell connecting seat and stack shell integrated into one piece, inside the piston rod inserted the stack shell, was equipped with the stack shell end cover at the stack shell front end, and the piston rod is located the outside one end of stack shell and is connected with the unsprung mass of car, stack shell connecting seat inner wall has the recess side, and the recess side is the narrow wide conical surface down, and the piston rod is located the one end of stack shell connecting seat and has the piston, and the piston forms conical surface structure with the recess side, still is equipped with spring taper hole structure on the stack shell connecting seat, and spring taper hole structure is equipped with a set of valve block that stretches including the taper hole and the spring that are located stack shell connecting seat bottom between stack shell and taper.

The top of the piston rod is also sleeved with a loop non-coplanar piston valve seat, the top of the loop non-coplanar piston valve seat is a loop adjustable valve body, and the loop non-coplanar piston valve seat and the loop adjustable valve body are fixedly connected through a loop adjustable valve body fixing nut; the non-coplanar piston valve seat of the loop is provided with a sliding ring, the sliding ring is sleeved with an O-shaped ring, and the sliding ring is fixed with the piston rod through a set screw; and a compression valve plate is arranged below the sliding ring, and a compression valve plate protection gasket is arranged on the bottom surface of the compression valve plate.

As the preferred scheme of the utility model: the spring comprises a tower spring and a clamp spring which are arranged in an overlapping mode.

Compared with the prior art, the beneficial effects of the utility model are that: the side surface of the groove in the connecting seat of the cylinder body is designed into a conical surface, so that the limit compression force applied to the shock absorber is buffered, the shock absorber and a vehicle suspension part and the like are prevented from being greatly impacted, and the riding comfort of a vehicle is improved; meanwhile, the spring stiffness of the expansion valve plate can be arranged in the taper hole structure, so that the self-adaptive hydraulic buffer damping for different vehicle types and different working conditions is realized.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the internal structure of the present invention in a stretching stroke state.

Fig. 3 is an enlarged view of the middle cone structure of the present invention.

In the figure, 1-a piston rod, 2-a compression valve plate protection gasket, 3-a compression valve plate, 4-a sliding ring, 5-an O-shaped ring, 6-a loop non-coplanar piston valve seat, 7-a loop adjustable valve body, 9-a barrel connecting seat, 10-a barrel, 11-a barrel end cover, 12-an extension valve plate, 13-a tower spring, 14-a snap spring, 15-a set screw, 16-a loop adjustable valve body fixing nut and 17-a spring taper hole structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, an adaptive hydraulic buffer of a shock absorber comprises a piston rod 1, a cylinder connecting seat 9 and a cylinder 10, the cylinder connecting seat 9 and the cylinder 10 are integrally formed, the piston rod 1 is inserted into the cylinder 10, a cylinder end cover 11 is arranged at the front end of the cylinder 10, one end of the piston rod 1, which is positioned outside the cylinder 10, is connected with unsprung mass of an automobile, a shell of the shock absorber is connected with an automobile body, the inner wall of the cylinder connecting seat 9 is provided with a groove side surface, the groove side surface is a conical surface with a narrow top and a wide bottom, one end of the piston rod 1, which is positioned in the cylinder connecting seat 9, is provided with a piston, the piston and the groove side surface form a conical surface structure, the cylinder connecting seat 9 is further provided with a spring conical hole structure 17, the spring conical hole structure 17 can vertically move up and down along the cylinder 10, the spring conical hole structure 17 comprises a conical hole and a spring, which are positioned at the bottom of the cylinder connecting seat 9, the rigidity coefficient of the extension valve plate 12 is adjustable, and can be matched according to vehicle types, so that the purpose of self-adaptive adjustment is achieved, when the shock absorber is in an extension stroke, hydraulic oil in the cylinder body 10 flows into an upper chamber from a lower chamber, the upper chamber is in a negative pressure, the state of the spring taper hole structure 17 is shown in fig. 2, the taper hole is sealed by the elastic force of a spring, and no hydraulic oil flows through the taper hole; when the shock absorber is in a compression stroke but not at the limit, hydraulic oil in the barrel 10 flows from the upper chamber to the lower chamber, the upper chamber is in a positive pressure but the pressure is not enough to overcome the preload force of the spring in the spring cone hole structure 17, so that the cone hole structure is closed and no hydraulic oil flows through the cone hole.

The top of the piston rod 1 is also sleeved with a loop non-coplanar piston valve seat 6, the top of the loop non-coplanar piston valve seat 6 is provided with a loop adjustable valve body 7, and the loop non-coplanar piston valve seat 6 and the loop adjustable valve body 7 are fixedly connected through a loop adjustable valve body fixing nut 16; the non-coplanar piston valve seat 6 of the loop is provided with a sliding ring 4, the sliding ring 4 is sleeved with an O-shaped ring 5, the sliding ring 4 is fixed with the piston rod 1 through a set screw 15, and the motion guide function of the piston rod 1 is realized through the sliding ring 4; a compression valve plate 3 is arranged below the sliding ring 4, and a compression valve plate protection gasket 2 is arranged on the bottom surface of the compression valve plate 3.

When an automobile drives over a large road surface bulge at a high speed, wheels jump upwards, the shock absorber is compressed to an imminent limit, the piston rod 1 moves upwards to drive the non-coplanar piston valve seat 6 of the loop to move upwards, and a part of oil in the upper cavity in the barrel body 10 opens the compression valve plate 3 and enters the lower cavity part below the non-coplanar piston valve seat 6 of the loop; the other part of the oil in the upper cavity flows into the oil pipe through the hole on the bottom surface of the concave groove in the connecting seat 9 of the cylinder body and enters the oil storage tank; when the non-coplanar piston valve seat 6 of the loop continuously moves upwards to the groove of the connecting seat 9 of the cylinder body, the side surface of the groove is a conical surface, the groove is narrower upwards, the gap between the non-coplanar piston valve seat 6 of the loop and the groove is smaller and smaller, and the damping of the compressed oil is larger and larger; when the piston moves to the position shown in fig. 2, the gap is completely closed, and when the shock absorber continues to be compressed, the pressure of the hydraulic oil in the chamber B gradually increases until the pressure of the hydraulic oil is enough to overcome the spring preload force of the conical hole structure, the conical hole structure is opened, the hydraulic oil flows according to the flow direction shown in fig. 2, and the hydraulic oil flows through the gap of the conical hole structure, so that the damping force is generated.

Example 2:

on the basis of embodiment 1, the spring comprises a tower spring 13 and a clamp spring 14 which are arranged in an overlapping manner.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A self-adaptive hydraulic buffer of a shock absorber comprises a piston rod (1), a cylinder body connecting seat (9) and a cylinder body (10), wherein the cylinder body connecting seat (9) and the cylinder body (10) are integrally formed, the piston rod (1) is inserted into the cylinder body (10), a cylinder end cover (11) is arranged at the front end of the cylinder (10), one end of the piston rod (1) positioned outside the cylinder (10) is connected with unsprung mass of an automobile, it is characterized in that the inner wall of the cylinder body connecting seat (9) is provided with a groove side face, the groove side face is a conical surface with a narrow top and a wide bottom, one end of the piston rod (1) positioned in the cylinder body connecting seat (9) is provided with a piston, the piston and the groove side face form a conical surface structure, a spring taper hole structure (17) is further arranged on the barrel body connecting seat (9), the spring taper hole structure (17) comprises a taper hole and a spring which are located at the bottom of the barrel body connecting seat (9), and a group of stretching valve plates (12) are arranged between the barrel body (10) and the taper hole.

2. The self-adaptive hydraulic buffer of the shock absorber according to claim 1, wherein the top of the piston rod (1) is further sleeved with a loop non-coplanar piston valve seat (6), the top of the loop non-coplanar piston valve seat (6) is a loop adjustable valve body (7), and the loop non-coplanar piston valve seat (6) and the loop adjustable valve body (7) are fixedly connected through a loop adjustable valve body fixing nut (16); the non-coplanar piston valve seat (6) of the loop is provided with a sliding ring (4), and the sliding ring (4) is fixed with the piston rod (1) through a set screw (15).

3. The adaptive hydraulic buffer of a shock absorber according to claim 2, wherein the sliding ring (4) is fitted with an O-ring (5).

4. The adaptive hydraulic buffer of a shock absorber according to claim 3, wherein a compression valve plate (3) is further provided below the sliding ring (4), and a compression valve plate protection gasket (2) is provided on the bottom surface of the compression valve plate (3).

5. Adaptive hydraulic shock absorber according to claim 1 or 2, wherein the spring comprises a stack of a tower spring (13) and a circlip (14).