CN212106755U

CN212106755U - Built-in buffer spring shock absorber

Info

Publication number: CN212106755U
Application number: CN202020548257.1U
Authority: CN
Inventors: 陈万成; 林建伟; 应元钏; 钟方栋; 林立枣; 杨宇
Original assignee: Zhejiang Gold Intelligent Suspension Co Ltd
Current assignee: Zhejiang Gold Intelligent Suspension Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-12-08
Anticipated expiration: 2030-04-14

Abstract

The utility model relates to a built-in buffer spring shock absorber, including outer cylinder, interior cylinder, connecting rod, piston valve, bottom valve and oil blanket direction subassembly, be equipped with the buffering subassembly on the connecting rod, the buffering subassembly includes buffer spring, cushion ring, on the connecting rod was located to the buffer spring cover, the buffer spring both ends all were equipped with the cushion ring, the cushion ring divide into connecting portion and spacing portion, connecting portion cup joint with buffer spring, spacing portion offsets with buffer spring, the fixed stop collar that is equipped with in connecting rod middle part, stop collar terminal surface diameter is greater than the connecting rod diameter, this terminal surface offsets with the spacing portion of cushion ring. The utility model has the advantages that: the wheel plays a role in stretching and limiting when the wheel is in the limit of bounce, and the turning and side-tipping of the vehicle can be improved.

Description

Built-in buffer spring shock absorber

Technical Field

The utility model relates to the technical field of auto-parts, concretely relates to built-in buffer spring shock absorber.

Background

The shock absorber is a damping element in an automobile chassis system and is mainly used for attenuating the vibration generated in the running process of an automobile, so that the running of the automobile is more stable and safer, and the service life of the automobile is prolonged.

In the prior art, a piston is fixedly assembled on a connecting rod in a shock absorber, an assembly body of the piston and the connecting rod reciprocates in a shock absorber cylinder, so that oil repeatedly flows into another cavity from one cavity, the friction between the oil and a hole wall forms damping force on shock, and the energy of the shock of an automobile is converted into the heat energy of the oil, so that the shock absorption effect is achieved. However, when the automobile travels to a bumpy road section, the automobile is prone to a turning and rolling phenomenon, and safety and stability of vehicle traveling are affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide a built-in buffer spring shock absorber, play tensile limiting displacement when the wheel limit of bounce down, can improve the vehicle and turn to and heels.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a built-in buffer spring shock absorber, includes outer cylinder, interior cylinder, connecting rod, piston valve, bottom valve and oil blanket direction subassembly, outer cylinder is cup jointed outward to interior cylinder, forms an oil reservoir between the two, the connecting rod is arranged in interior cylinder, piston valve fixed connection is at the connecting rod end, the bottom valve is fixed to be arranged in interior cylinder bottom, oil blanket direction subassembly cup joints on the connecting rod, connects outer cylinder and interior cylinder and forms oil reservoir, its characterized in that: be equipped with the buffering subassembly on the connecting rod, the buffering subassembly includes buffer spring, buffering ring, on the connecting rod was located to the buffer spring cover, the buffer spring both ends all were equipped with buffering ring, buffering ring divide into connecting portion and spacing portion, connecting portion cup joint with buffer spring, spacing portion offsets with buffer spring, the fixed stop collar that is equipped with in connecting rod middle part, stop collar terminal surface diameter is greater than the connecting rod diameter, and this terminal surface offsets with the spacing portion of buffering ring.

The utility model has the characteristics as above: when an automobile travels to a bumpy road section, wheels can jump, a connecting rod in the shock absorber drives a piston valve to move up and down, a buffer spring arranged on the connecting rod deforms under the action of oil liquid in reciprocating motion, the connecting rod in the shock absorber has the stretching and limiting effect, and the problem that the automobile turns and heels can be effectively solved. The limiting sleeve arranged on the connecting rod has a limiting effect on the buffer ring, so that the buffer assembly is convenient to integrally mount.

The utility model discloses further setting is: piston body axial direction center in the piston valve is equipped with central through-hole, piston body inside be equipped with the central through-hole is coaxial and be the annular oil storage chamber around central through-hole, be equipped with on the piston body run through the piston body and with the valve opening of oil storage chamber intercommunication, be equipped with the oil baffle on the oil storage chamber lateral wall.

The utility model has the characteristics as above: this internal oil storage chamber that sets up of piston, the oil storage intracavity still is equipped with the fender oil board, and fluid flows in the oil storage intracavity from the valve opening, is blockked the back by fender oil board and is passed by the detour, so lengthened the circulation passageway of fluid, has increased area of contact between piston and the fluid for the vibration energy turns into the efficiency improvement of heat energy, has strengthened the damping effect of shock absorber, and fluid can also change some mechanical energy colliding with the flash of fender oil board. When the automobile vibrates too much, the reciprocating flow velocity of oil is very fast, all has very big impact force to director, piston, outer cylinder inner wall, interior cylinder inner wall etc. sets up such piston body and can effectively slow down the velocity of flow of oil, reduces the impact force of oil, avoids oil foam, increase of service life, simple structure.

The utility model discloses further setting is: the outer diameter of the limiting part of the buffer ring is larger than the outer diameter of the buffer spring, and the outer diameter of the connecting part is smaller than the inner diameter of the buffer spring.

The utility model has the characteristics as above: the outer diameter of the limiting part of the buffer ring is larger than that of the buffer spring, so that the buffer spring is limited.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

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

Fig. 2 is a schematic structural diagram of a cushion ring according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the piston body according to the embodiment of the present invention.

Detailed Description

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

As shown in fig. 1-3, a shock absorber with a built-in buffer spring comprises an outer cylinder barrel 1, an inner cylinder barrel 2, a connecting rod 3, a piston valve 4, a bottom valve 5 and an oil seal guide assembly 6, wherein the outer cylinder barrel 1 is sleeved outside the inner cylinder barrel 2, an oil storage cavity 11 is formed between the outer cylinder barrel 1 and the inner cylinder barrel 1, the connecting rod 3 is arranged in the inner cylinder barrel 2, the piston valve 4 is fixedly connected with the tail end of the connecting rod 3, the bottom valve 5 is fixedly arranged at the bottom of the inner cylinder barrel 2, the oil seal guide assembly 6 is sleeved on the connecting rod 3 and is connected with the outer cylinder barrel 1 and the inner cylinder barrel 2 to form an oil guide cavity 61, the connecting rod 3 is provided with a buffer assembly, the buffer assembly comprises a buffer spring 7 and a buffer ring 8, the buffer spring 7 is sleeved on the connecting rod 3, both ends of the buffer spring 7 are provided with buffer rings 8, the buffer rings 8 are divided into a connecting, the diameter of one end face of the limiting sleeve 31 is larger than that of the connecting rod 3, the end face abuts against the limiting portion 82 of the buffer ring 8, the outer diameter of the limiting portion 82 of the buffer ring 8 is larger than that of the buffer spring 7, and the outer diameter of the connecting portion 81 is smaller than that of the buffer spring 7. When the automobile shakes too much, the connecting rod 3 drives the piston valve 4 to reciprocate up and down, oil inside the shock absorber flows between the outer cylinder barrel 1 and the inner cylinder barrel 2 rapidly in a reciprocating mode through the oil guide cavity 61, the buffer spring 7 is compressed at the moment, the connecting rod 3 in the shock absorber has a stretching and limiting effect, and the problem that the automobile turns to and heels can be effectively solved. The limiting sleeve 31 arranged on the connecting rod 3 has a limiting effect on the buffer ring 8, and the limiting part of the buffer ring has a limiting effect on the buffer spring 7.

A central through hole 411 is formed in the axial center of the piston body 41 in the piston valve 4, an oil storage chamber 412 which is coaxial with the central through hole 411 and annular around the central through hole 411 is formed in the piston body 41, a valve hole 413 which penetrates through the piston body 41 and is communicated with the oil storage chamber 412 is formed in the piston body 41, and an oil baffle plate 414 is arranged on the side wall of the oil storage chamber 412. When oil flows into the oil storage chamber 412 from the valve hole 413, the oil baffle 414 separates the oil storage chamber 412, so that the oil needs to bypass the oil baffle 414, the flowing channel length of the oil is increased, the contact area between the oil and the piston body 41 is increased, the conversion efficiency of vibration energy is improved, part of mechanical energy of the oil can be offset, the flowing speed of the oil is reduced, and the vibration reduction effect of the vibration absorber is improved.

Claims

1. The utility model provides a built-in buffer spring shock absorber, includes outer cylinder, interior cylinder, connecting rod, piston valve, bottom valve and oil blanket direction subassembly, outer cylinder is cup jointed outward to interior cylinder, forms an oil reservoir between the two, the connecting rod is arranged in interior cylinder, piston valve fixed connection is at the connecting rod end, the bottom valve is fixed to be arranged in interior cylinder bottom, oil blanket direction subassembly cup joints on the connecting rod, connects outer cylinder and interior cylinder and forms oil reservoir, its characterized in that: be equipped with the buffering subassembly on the connecting rod, the buffering subassembly includes buffer spring, buffering ring, on the connecting rod was located to the buffer spring cover, the buffer spring both ends all were equipped with buffering ring, buffering ring divide into connecting portion and spacing portion, connecting portion cup joint with buffer spring, spacing portion offsets with buffer spring, the fixed stop collar that is equipped with in connecting rod middle part, stop collar terminal surface diameter is greater than the connecting rod diameter, and this terminal surface offsets with the spacing portion of buffering ring.

2. An internal damping spring damper according to claim 1, characterized in that: piston body axial direction center in the piston valve is equipped with central through-hole, piston body inside be equipped with the central through-hole is coaxial and be the annular oil storage chamber around central through-hole, be equipped with on the piston body run through the piston body and with the valve opening of oil storage chamber intercommunication, be equipped with the oil baffle on the oil storage chamber lateral wall.

3. An internal damping spring damper according to claim 1, characterized in that: the outer diameter of the limiting part of the buffer ring is larger than the outer diameter of the buffer spring, and the outer diameter of the connecting part is smaller than the inner diameter of the buffer spring.