CN111457048A - Self-adaptive hydraulic buffer of shock absorber - Google Patents

Abstract

The invention discloses an adaptive hydraulic shock absorber for shock absorbers. There is a barrel end cover, the end of the piston rod located outside the barrel is connected with the unsprung mass of the car, the inner wall of the barrel connecting seat has a groove side surface, and the groove side surface is a conical surface with a narrow upper and a lower width, and the piston rod is located at the bottom. One end in the connecting seat of the cylinder body is provided with a piston, the piston and the side of the groove form a conical surface structure, and the connecting seat of the cylinder body is also provided with a spring cone hole structure; the device designs the side of the groove in the connecting seat of the cylinder body as a conical surface , buffer the ultimate compression force of the shock absorber, avoid the shock absorber and vehicle suspension components from being greatly impacted, and improve the ride comfort of the vehicle; Realize adaptive hydraulic buffer damping for different models and different working conditions.

Description

An adaptive hydraulic shock absorber

technical field

The invention relates to shock absorber technology, in particular to an adaptive hydraulic shock absorber for shock absorbers.

Background technique

Shock absorbers are often used in mechanical mechanisms, such as automobile chassis, motorcycles, trains, aircraft landing gear, etc. As one of the most important components in vehicle suspension systems, automobile shock absorbers are mainly responsible for absorbing consumption The vibration and impact energy generated by the uneven road surface when the vehicle is driven.

When the suspension stroke of a traditional vehicle is compressed to the limit, the mechanical collision of the suspension components will cause a sudden increase in the force of the shock absorber, which will cause the suspension components to bear the impact load and greatly reduce the use of related components. Longevity and reliability; if the shock absorber is used in a vehicle for riding purposes, it will cause poor riding comfort; if the impact level reaches a certain level, it will even cause harm to the health of the members.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an adaptive hydraulic shock absorber for a shock absorber to solve the above-mentioned problems in the background art.

To achieve the above object, the present invention provides the following technical solutions:

An adaptive hydraulic shock absorber for shock absorbers, comprising a piston rod, a cylinder body connecting seat and a cylinder body, the cylinder body connecting seat and the cylinder body are integrally formed, the piston rod is inserted into the cylinder body, and a cylinder body end is arranged at the front end of the cylinder body Cover, the end of the piston rod located outside the barrel is connected to the unsprung mass of the car, the inner wall of the barrel connecting seat has a groove side, the groove side is a tapered surface with a narrow upper and a lower width, and the piston rod is located in the barrel connecting seat The inner end has a piston. The piston and the side of the groove form a conical surface structure. There is also a spring cone hole structure on the connecting seat of the cylinder body. The spring cone hole structure can move vertically up and down along the cylinder body. The taper hole and the spring at the bottom of the connection seat are provided with a set of stretch valve plates between the cylinder body and the taper hole.

The top of the piston rod is also sheathed with a circuit non-same-face piston valve seat, the top of the circuit non-same-face piston valve seat is a circuit adjustable valve body, and the circuit non-same-face piston valve seat and the circuit adjustable valve body pass through the circuit adjustable valve body. The fixing nut is fixedly connected; the piston valve seat of the circuit is not on the same plane, and a sliding ring is provided on the sliding ring, and an O-ring is sleeved on the sliding ring, and the sliding ring is fixed with the piston rod through the set screw; The compression valve plate has a compression valve plate protection gasket on the bottom surface of the compression valve plate.

As a preferred solution of the present invention: the spring includes a tower spring and a circlip that are superimposed.

Compared with the prior art, the beneficial effect of the present invention is that: the device designs the side surface of the groove in the connecting seat of the cylinder body into a tapered surface, which buffers the limit compression force received by the shock absorber and avoids the shock absorber and vehicle suspension. The components are greatly impacted, which improves the ride comfort of the vehicle; at the same time, the spring stiffness of the stretch valve plate can be set in the tapered hole structure, so as to realize the adaptive hydraulic buffer damping for different models and different working conditions.

Description of 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 the state of the stretching stroke.

FIG. 3 is an enlarged view of the cone structure in the present invention.

In the picture, 1-piston rod, 2-compression valve plate protection gasket, 3-compression valve plate, 4-slip ring, 5-O-ring, 6-circuit non-uniform piston valve seat, 7-circuit adjustable valve body , 9-Cylinder body connection seat, 10-Cylinder body, 11-Cylinder body end cover, 12-Extension valve plate, 13-Tower spring, 14-Clamping spring, 15-Set screw, 16-Circuit adjustable valve body fixed Nut, 17-spring taper hole structure.

Detailed ways

The technical solutions in 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within 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 The orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed in a specific orientation. and operation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1:

Please refer to Figure 1-3, an adaptive hydraulic shock absorber, including a piston rod 1, a barrel connecting seat 9 and a barrel 10, the barrel connecting seat 9 and the barrel 10 are integrally formed, and the piston rod 1 is inserted Inside the cylinder body 10, a cylinder body end cover 11 is arranged at the front end of the cylinder body 10, the end of the piston rod 1 located outside the cylinder body 10 is connected with the unsprung mass of the automobile, and the shock absorber shell is connected with the automobile body at the same time, The inner wall of the barrel connecting seat 9 has a groove side surface, and the groove side surface is a conical surface with a narrow upper and a lower width. One end of the piston rod 1 located in the barrel connecting seat 9 has a piston, and the piston and the side surface of the groove form a conical surface structure, The barrel body connecting seat 9 is also provided with a spring cone hole structure 17. The spring cone hole structure 17 can move vertically up and down along the barrel body 10. The spring cone hole structure 17 includes a cone hole and a spring at the bottom of the barrel body connecting seat 9. A set of stretch valve sheets 12 are arranged between the cylinder body 10 and the tapered hole. The stiffness coefficient of the stretch valve sheets 12 is adjustable and can be matched according to the vehicle type, so as to achieve the purpose of self-adaptive adjustment. When the shock absorber is in the stretch stroke, The hydraulic oil in the cylinder body 10 flows into the upper chamber from the lower chamber, and the upper chamber is under negative pressure. The state of the spring cone hole structure 17 is shown in Figure 2. The elastic force of the spring closes the cone hole, and no hydraulic oil flows from it. The taper hole flows through; when the shock absorber is in the compression stroke but not reaching the limit, the hydraulic oil in the cylinder body 10 flows from the upper chamber to the lower chamber, and the upper chamber is under positive pressure, but its pressure is not enough to overcome The preload force of the spring in the spring cone structure 17, so that the cone structure is closed and no hydraulic oil flows through the cone hole.

The top of the piston rod 1 is also sheathed with a circuit non-same-face piston valve seat 6, and the top of the circuit non-same-face piston valve seat 6 is a circuit adjustable valve body 7, the circuit non-same-face piston valve seat 6 and the circuit adjustable valve body 7. It is fixedly connected by the circuit adjustable valve body fixing nut 16; the circuit non-uniform piston valve seat 6 is provided with a sliding ring 4, the sliding ring 4 is sleeved with an O-ring 5, and the sliding ring 4 is fixed by the set screw 15 is fixed with the piston rod 1, and the motion guiding function of the piston rod 1 is realized through the sliding ring 4; there is also a compression valve plate 3 under the sliding ring 4, and the compression valve plate 3 has a compression valve plate protection gasket 2 on the bottom surface.

When the car drives over a large bump on the road at a relatively fast speed, the wheel jumps up, the shock absorber is compressed to the limit, the piston rod 1 moves upward to drive the circuit non-same plane piston valve seat 6 upward, so that the inner cylinder body 10 rises A part of the oil in the chamber opens the compression valve plate 3 and enters the lower chamber part below the non-identical piston valve seat 6 of the circuit; another part of the oil in the upper chamber flows into the oil pipe through the hole on the bottom surface of the groove in the connecting seat 9 of the cylinder body and enters the storage tank. Oil tank; when the circuit non-same-face piston valve seat 6 continues to ascend to the groove of the cylinder body connecting seat 9, since the side of the groove is a conical surface, the groove becomes narrower as it goes up, and the circuit non-same-face piston valve seat 6 and The gap between the grooves is also getting smaller and smaller, and the damping of the compressed oil is getting larger and larger; when the piston runs to the position shown in Figure 2, the gap is completely closed, and when the shock absorber continues to compress, the air in the B chamber will become larger and larger. The pressure of the hydraulic oil gradually increases until the pressure is enough to overcome the spring preload force of the conical hole structure, the conical hole structure opens, the hydraulic oil flows according to the flow direction shown in Figure 2, and the hydraulic oil flows through the gap of the conical hole structure, thereby Damping force is generated.

Example 2:

On the basis of Embodiment 1, the spring includes a tower spring 13 and a circlip 14 that are superimposed.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

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 body end cover (11) is arranged at the front end of the cylinder body (10), one end of the piston rod (1) positioned outside the cylinder body (10) is connected with unsprung mass of an automobile, the self-adaptive hydraulic buffer 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 which is narrow at the top and wide at the 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, the cylinder body connecting seat (9) is also provided with a spring conical hole structure (17), the spring conical hole structure (17) can vertically move up and down along the cylinder body (10), and the spring conical hole structure, a group of expansion valve plates (12) are arranged between the cylinder 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).

3. The adaptive hydraulic buffer of a shock absorber according to claim 2, wherein 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-ring (5), and the sliding ring (4) is fixed with the piston rod (1) through a set screw (15).

4. An adaptive hydraulic buffer for shock absorbers according to claim 3, characterized in that a compression valve plate (3) is further provided under the slip ring (4).

5. The adaptive hydraulic buffer of a shock absorber according to claim 4, wherein the bottom surface of the compression valve sheet (3) is provided with a compression valve sheet protection gasket (2).

6. 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).

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