CN212318634U

CN212318634U - Double-cylinder knob bumper shock absorber

Info

Publication number: CN212318634U
Application number: CN202020793619.3U
Authority: CN
Inventors: 倪涛
Original assignee: HANGZHOU KAISHENG SHOCK ABSORBER CO Ltd
Current assignee: HANGZHOU KAISHENG SHOCK ABSORBER CO Ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-01-08
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a binocular knob bumper shock absorber relates to bumper shock absorber technical field. The double-cylinder knob shock absorber comprises a cylinder body, a movable rod is arranged in the cylinder body, a connecting device is arranged at the upper end of the movable rod and the lower end of the cylinder body, the cylinder body comprises an outer cylinder, an inner cylinder and a first circular groove, the middle part of the upper surface of the outer cylinder is provided with the first circular groove, the inner cylinder is arranged in the outer cylinder, the middle part of the inner bottom surface of the inner cylinder is provided with a first buffer block, the lower surface of the first buffer block is fixedly connected with the middle part of the inner bottom surface of the inner cylinder, a supporting block is arranged between the outer bottom surface of the inner cylinder and the inner bottom surface of the outer cylinder, the upper surface of the supporting block is fixedly connected with the middle part of the outer bottom surface of the inner cylinder, a buffer ring protects the upper end of the outer cylinder, the first buffer block protects the inner bottom surface of the inner cylinder from directly bearing possible, effectively prolonging the service life.

Description

Double-cylinder knob bumper shock absorber

Technical Field

The utility model relates to a bumper shock absorber technical field specifically is a binocular knob bumper shock absorber.

Background

The shock absorber is used for inhibiting the shock when the spring absorbs the shock and rebounds and the impact from the road surface. The damping device is widely applied to automobiles and is used for accelerating the attenuation of the vibration of a frame and an automobile body so as to improve the driving smoothness of the automobiles. When the shock absorber passes through an uneven road surface, although the shock absorbing spring can filter the shock of the road surface, the spring can still do reciprocating motion, the shock absorber is used for inhibiting the spring jumping, and when the double-cylinder knob shock absorber is used, impact is often generated between the piston rod and the inner cylinder due to different vibration degrees, and the inner cylinder is easy to wear.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a binocular knob 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: a double-cylinder knob shock absorber comprises a cylinder body, a movable rod is arranged in the cylinder body, the upper end of the movable rod and the lower end of the cylinder body are provided with connecting devices, the cylinder body comprises an outer cylinder, the inner cylinder is arranged inside the outer cylinder, the upper surface of the inner cylinder is fixedly connected with the middle part of the inner upper surface of the outer cylinder, the lower surface of the inner cylinder is provided with two circular grooves II, a compression valve and a compensation valve are respectively arranged in the two circular grooves II, the middle part of the inner bottom surface of the inner cylinder is provided with a first buffer block, the lower surface of the first buffer block is fixedly connected with the middle part of the inner bottom surface of the inner cylinder, a supporting block is arranged between the outer bottom surface of the inner cylinder and the inner bottom surface of the outer cylinder, the upper surface of the supporting block is fixedly connected with the middle part of the outer bottom surface of the inner cylinder, and the lower surface of the supporting block is fixedly connected with the middle part of the inner bottom surface of.

Preferably, the movable rod comprises a piston rod, a piston and two circular grooves III, the two circular grooves III are all arranged on the upper surface of the piston, an expansion valve and a circulation valve are respectively arranged in the two circular grooves III, the upper surfaces of the expansion valve and the circulation valve are respectively provided with a buffer block II, the middle parts of the upper surface and the lower surface of the piston are provided with a circular groove IV, the lower surface of the piston rod is provided with a buffer pad, the upper surface of the buffer pad is fixedly connected with the lower surface of the piston rod, and the piston is sleeved at the lower end of the rod surface of the piston rod through the circular.

Preferably, the connecting device comprises an upper connecting piece, an upper disc and a base disc, the lower surface of the base disc is provided with a lower connecting piece, the upper surface of the upper disc is provided with an upper connecting piece, the lower surface of the outer cylinder is fixedly connected with the upper surface of the base disc, the upper surface of the piston rod is fixedly connected with the lower surface of the upper disc, a damping spring is arranged between the upper disc and the base disc, and the upper surface of the outer cylinder is provided with a.

Compared with the prior art, the beneficial effects of the utility model are that:

according to the double-cylinder knob shock absorber, the upper end of the outer cylinder is protected by the buffer ring, the inner bottom surface of the inner cylinder is protected by the first buffer block, the possible impact of the piston rod is not directly borne, the abrasion is avoided, the bearing capacity of the bottom surface of the inner cylinder when the inner cylinder is impacted is enhanced by the support block, and the service life is effectively prolonged.

Drawings

Fig. 1 is a schematic view of the overall structure of the dual-cylinder knob shock absorber of the present invention;

FIG. 2 is a schematic view of the barrel of FIG. 1 according to the present invention;

fig. 3 is a schematic structural view of the piston rod of fig. 1 according to the present invention;

FIG. 4 is a schematic view of the connecting device of FIG. 1 according to the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

In the figure: 1 cylinder body, 2 movable rods, 3 connecting devices, 4 buffer rings, 11 outer cylinders, 12 inner cylinders, 13 circular groove I, 14 sealing rings, 15 circular groove II, 16 supporting blocks, 17 compression valves, 18 compensation valves, 19 buffer block I, 21 piston rods, 22 buffer pads, 23 buffer block II, 24 extension valves, 25 circular groove IV, 26 circulation valves, 27 circular groove III, 28 pistons, 31 upper discs, 32 upper connecting pieces, 33 lower connecting pieces and 34 chassis.

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.

Referring to fig. 1-5, the present invention provides a technical solution: a double-cylinder knob shock absorber comprises a cylinder body 1, a movable rod 2 is arranged inside the cylinder body 1, the movable rod 2 comprises a piston rod 21, a piston 28 and two circular groove three 27, the two circular groove three 27 are arranged on the upper surface of the piston 28, an extension valve 24 and a circulation valve 26 are respectively arranged in the two circular groove three 27, buffer block two 23 are respectively arranged on the upper surfaces of the extension valve 24 and the circulation valve 26, a circular groove four 25 is arranged in the middle of the upper surface and the lower surface of the piston 28, a buffer cushion 22 is arranged on the lower surface of the piston rod 21, the upper surface of the buffer cushion 22 is fixedly connected with the lower surface of the piston rod 21, the piston 28 is sleeved on the lower end of the rod surface of the piston rod 21 through the circular groove four 25, a connecting device 3 is arranged at the upper end of the piston rod 2 and the lower end of the cylinder body 1, the connecting device 3 comprises an upper connecting piece 32, an upper plate 31 and a bottom plate, the lower surface of the outer cylinder 11 is fixedly connected with the upper surface of the base plate 34, the upper surface of the piston rod 21 is fixedly connected with the lower surface of the upper disc 31, a damping spring is arranged between the upper disc 31 and the base plate 34, the upper surface of the outer cylinder 11 is provided with a buffer ring 4, the cylinder body 1 comprises the outer cylinder 11, an inner cylinder 12 and a first circular groove 13, the middle part of the upper surface of the outer cylinder 11 is provided with the first circular groove 13, the first circular groove 13 is internally provided with a sealing ring 14, the inner cylinder 12 is arranged inside the outer cylinder 11, the upper surface of the inner cylinder 12 is fixedly connected with the middle part of the inner upper surface of the outer cylinder 11, the lower surface of the inner cylinder 12 is provided with two second circular grooves 15, the two second circular grooves 15 are respectively provided with a compression valve 17 and a compensation valve 18, the middle part of the inner bottom surface of the inner cylinder 12 is provided with a first buffer block, the upper surface of the supporting block 16 is fixedly connected with the middle part of the outer bottom surface of the inner cylinder 12, and the lower surface of the supporting block 16 is fixedly connected with the middle part of the inner bottom surface of the outer cylinder 11.

The working principle is as follows: the dual barrel knob shock absorber, during the compression stroke, means that the vehicle wheels move closer to the body and the shock absorber is compressed, at which time the piston 28 in the shock absorber moves downward. The volume in the lower portion of the piston 28 decreases and the oil pressure increases and oil flows through the flow valve 26 to the chamber above the piston 28. The upper chamber is partially occupied by the piston rod 21 so that the increased volume of the upper chamber is less than the decreased volume of the lower chamber, and a portion of the oil then pushes open the compression valve 17 and flows back to the oil reservoir formed between the outer barrel 11 and the inner barrel 12. The saving of oil by these valves creates a damping force for the compressed motion of the suspension. When the shock absorber is in an extension stroke, the wheel is equivalently far away from the vehicle body, and the shock absorber is stretched. The piston 28 of the shock absorber is now moved upwards. The piston 28 increases the upper chamber oil pressure, the vent valve 26 closes, and oil in the upper chamber pushes open the extension valve 24 into the lower chamber. Because of the existence of the piston rod 21, the oil flowing from the upper cavity is not enough to fill the increased volume of the lower cavity, and a vacuum degree is generated in the lower cavity, and the oil in the oil storage cylinder pushes the compensation valve 18 to flow into the lower cavity for supplement. Because the throttling action of the valves plays a role in damping the suspension during stretching movement, and because the rigidity and the pretightening force of the spring of the stretching valve 24 are designed to be larger than those of the compression valve 17, under the same pressure, the sum of the channel load areas of the stretching valve 24 and the corresponding normally open gap is smaller than the sum of the channel sectional areas of the compression valve 17 and the corresponding normally open gap. The damping force generated by the extension stroke of the shock absorber is larger than that of the compression stroke, the requirement of rapid shock absorption is met, meanwhile, the upper end of the outer cylinder 11 is protected by the buffer ring 4, the inner bottom surface of the inner cylinder 11 is protected by the first buffer block 19 not to directly bear possible impact of the piston rod 21, abrasion is avoided, the bearing capacity of the bottom surface of the inner cylinder 11 when the bottom surface of the inner cylinder is impacted is enhanced by the support block 16, and the service life is effectively prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A double-cylinder knob bumper shock absorber, includes barrel (1), its characterized in that: the inner-wall-type vacuum pump is characterized in that a movable rod (2) is arranged in the barrel body (1), the upper end of the movable rod (2) and the lower end of the barrel body (1) are provided with a connecting device (3), the barrel body (1) comprises an outer barrel (11), an inner barrel (12) and a circular groove I (13), the circular groove I (13) is arranged in the middle of the upper surface of the outer barrel (11), a sealing ring (14) is arranged in the circular groove I (13), the inner barrel (12) is arranged in the outer barrel (11), the upper surface of the inner barrel (12) is fixedly connected with the middle of the inner upper surface of the outer barrel (11), the lower surface of the inner barrel (12) is provided with two circular grooves II (15), a compression valve (17) and a compensation valve (18) are respectively arranged in the two circular grooves II (15), the middle of the inner bottom surface of the inner barrel (12) is provided with a buffer block I (19), the lower, a supporting block (16) is arranged between the outer bottom surface of the inner cylinder (12) and the inner bottom surface of the outer cylinder (11), the upper surface of the supporting block (16) is fixedly connected with the middle part of the outer bottom surface of the inner cylinder (12), and the lower surface of the supporting block (16) is fixedly connected with the middle part of the inner bottom surface of the outer cylinder (11).

2. The dual-tube knob shock absorber according to claim 1, wherein: the movable rod (2) comprises a piston rod (21), a piston (28) and two circular grooves three (27), wherein the two circular grooves three (27) are arranged on the upper surface of the piston (28), an expansion valve (24) and a circulation valve (26) are respectively arranged in the two circular grooves three (27), buffer blocks two (23) are respectively arranged on the upper surfaces of the expansion valve (24) and the circulation valve (26), a circular groove four (25) is arranged in the middle of the upper surface and the lower surface of the piston (28), a buffer cushion (22) is arranged on the lower surface of the piston rod (21), the upper surface of the buffer cushion (22) is fixedly connected with the lower surface of the piston rod (21), and the piston (28) is sleeved at the lower end of the rod surface of the piston rod (21) through the circular groove four (25).

3. The dual-tube knob shock absorber according to claim 1, wherein: the connecting device (3) comprises an upper connecting piece (32), an upper disc (31) and a base disc (34), a lower connecting piece (33) is arranged on the lower surface of the base disc (34), the upper connecting piece (32) is arranged on the upper surface of the upper disc (31), the lower surface of the outer cylinder (11) is fixedly connected with the upper surface of the base disc (34), the upper surface of the piston rod (21) is fixedly connected with the lower surface of the upper disc (31), a damping spring is arranged between the upper disc (31) and the base disc (34), and a buffering ring (4) is arranged on the upper surface of the outer cylinder (11.