CN210739241U

CN210739241U - Double-cylinder shock absorber

Info

Publication number: CN210739241U
Application number: CN201921394875.9U
Authority: CN
Inventors: 范维平
Original assignee: Qingyang Jinyuan Mechanical Equipment Manufacturing Co Ltd
Current assignee: Qingyang Jinyuan Mechanical Equipment Manufacturing Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-06-12
Anticipated expiration: 2029-08-27

Abstract

The utility model relates to a shock attenuation field specifically is a double-cylinder shock absorber, including the piston cylinder, the inside piston that is equipped with of piston cylinder is connected with the piston rod on the piston, and the piston cylinder lower extreme is equipped with down the go-between, and the piston rod stretches out outside the piston cylinder, and the cover has a damping spring on the body of rod that the piston rod stretches out outside the piston cylinder, and a damping spring outside has cup jointed the guide cylinder, and the guide cylinder upper end is equipped with the go-between, and lower pot head is on the piston cylinder, and the laminating of guide cylinder internal face and the outer wall of piston cylinder. The utility model discloses during operation guide cylinder and piston synchronous motion form the direction of piston cylinder internal face and outer wall, guarantee the axial of piston rod motion, have avoided piston rod and barrel contact department wearing and tearing to reveal and cause the condition that weakens the damping effect of bumper shock absorber.

Description

Double-cylinder shock absorber

Technical Field

The utility model relates to a shock attenuation field specifically indicates a binocular shock absorber.

Background

The shock absorber is used for inhibiting the shock generated when the spring absorbs the shock and rebounds and the impact from the road surface, is widely used for 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 automobile. The shock absorber is divided into a single tube and a double tube according to the structure. The existing shock absorber generally comprises a cylinder, a piston rod, a piston, an upper connecting ring and a lower connecting ring, when the shock absorber is used specifically, the contact position of the piston rod and the cylinder is easy to generate non-axial friction due to the shaking of the upper connecting ring and the lower connecting ring, so that the contact position of the piston rod and the cylinder is abraded and leaked, and the damping effect of the shock absorber is weakened. To this end, we have designed a dual tube shock absorber.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model provides a double-cylinder bumper shock absorber. The utility model discloses can realize.

For solving the above technical problem, the utility model discloses a technical scheme as follows:

the double-cylinder shock absorber comprises a piston cylinder, a piston is arranged inside the piston cylinder, a piston rod is connected onto the piston, a lower connecting ring is arranged at the lower end of the piston cylinder, the piston rod extends out of the piston cylinder, a first shock absorption spring is sleeved on a rod body of the piston rod extending out of the piston cylinder, a guide cylinder is sleeved outside the first shock absorption spring, an upper connecting ring is arranged at the upper end of the guide cylinder, the lower connecting ring is sleeved on the piston cylinder, the inner wall surface of the guide cylinder is attached to the outer wall surface of the piston cylinder.

The utility model discloses in, the piston cylinder is cylindric barrel, and its lower extreme is airtight and connect the piston ring, and the perforation that the piston rod was worn out is established to the upper end, and the piston is guaranteed air tightness with the laminating of piston cylinder internal face, is generally equipped with the piston ring on the piston, and in order to guarantee the airtight effect of piston simultaneously, the piston ring is the multiturn and arranges on the piston, and piston cylinder, piston rod, piston are the prior art that technical personnel are known in the field, and here is no longer repeated. Damping member about the go-between is connected with last go-between mainly used down, because the connected mode is the hub connection generally, consequently the utility model discloses go up the go-between for being equipped with the connection middleware in shaft hole from top to bottom. The utility model discloses with the main difference of current bumper shock absorber lie in setting up guide cylinder mechanism, the guide cylinder upper end is equipped with the go-between, lower pot head is on the piston cylinder, the laminating of guide cylinder internal face and the outer wall of piston cylinder, piston rod fixed connection is inside the guide cylinder, concrete during operation, guide cylinder and piston synchronous motion form the direction of piston cylinder internal face and outer wall, guarantee the axial nature of piston rod motion, avoid piston rod and barrel contact department wearing and tearing to reveal and cause the condition that weakens the damping effect of bumper shock absorber.

As a preferred mode, the lower end of the guide cylinder is provided with an upper positioning ring, the lower end of the piston cylinder is provided with a lower positioning ring, and a second damping spring is connected between the upper positioning ring and the lower positioning ring.

Preferably, the second damping spring is sleeved outside the piston cylinder.

As a preferable mode, the upper end of the piston rod is provided with a connecting thread column, the upper end of the guide cylinder is provided with an insertion hole through which the connecting thread column penetrates, and the connecting thread column penetrates through the insertion hole and is screwed with a nut.

Preferably, the number of the upper connecting rings is two, and the two upper connecting rings are respectively arranged on two sides of the connecting threaded column in a butt joint mode.

In a preferred embodiment, the piston is provided with a piston ring.

Preferably, the piston ring is arranged on the piston in a plurality of rings.

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

(1) the utility model discloses the laminating of guide cylinder internal face and piston cylinder outer wall face, piston rod fixed connection are inside the guide cylinder, and during concrete work, guide cylinder and piston synchronous motion form the direction of piston cylinder internal face and outer wall face, guarantee the axiality of piston rod motion, avoid the piston rod to wear to reveal with the barrel contact department and cause the condition that weakens the damping effect of bumper shock absorber;

(2) the lower end of the guide cylinder is provided with the upper positioning ring, the lower end of the piston cylinder is provided with the positioning ring, the second damping spring is connected between the upper positioning ring and the lower positioning ring, and the first damping spring and the second damping spring are synchronously compressed and reset during working, so that the damping effect of the damper is improved;

(3) the upper end of the piston rod of the shock absorber is provided with the connecting thread column, the upper end of the guide cylinder is provided with the jack into which the connecting thread column penetrates, the connecting thread column penetrates through the jack and is screwed with the nut, and the piston rod is detachably connected onto the guide cylinder through the matching of the connecting thread column and the nut, so that the shock absorber is convenient to process and assemble;

(4) the utility model discloses go up the go-between and be two, be the butt joint respectively and arrange in connecting thread post both sides, avoid going up the condition that go-between and connecting thread post interfere.

Drawings

Fig. 1 is a front cross-sectional view of an embodiment of the present invention.

Fig. 2 is a left-side sectional view of an embodiment of the present invention.

The damping device comprises a piston cylinder 1, a lower connecting ring 101, a lower positioning ring 101, a guide cylinder 2, an upper connecting ring 201, an upper positioning ring 202, a first damping spring 3, a piston rod 4, a threaded column 401, a piston 5 and a second damping spring 6.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.

Example 1:

the utility model provides a double-cylinder shock absorber, including

piston cylinder

1, 1 inside piston 5 that is equipped with of piston cylinder, be connected with piston rod 4 on the

piston

5, 1 lower extreme of piston cylinder is equipped with down go-between 101, piston rod 4 stretches out outside 1 of piston cylinder, the cover has first damping spring 3 on the body of rod that piston rod 4 stretches out 1 external of piston cylinder, 3 outside guide cylinder 2 that have cup jointed of first damping spring, 2 upper ends of guide cylinder are equipped with go-between 201, the lower pot head is on 1 of piston cylinder, 2 internal faces of guide cylinder and the laminating of 1 outer wall of piston cylinder, 4 fixed connection of piston rod are inside 2 of.

In this embodiment, the piston cylinder 1 is a cylindrical cylinder, the lower end of the piston cylinder is sealed and connected with a piston ring, a through hole through which the piston rod 4 penetrates is formed in the upper end of the piston cylinder, the piston 5 is attached to the inner wall surface of the piston cylinder 1 to ensure air tightness, the piston ring is generally arranged on the piston 5, meanwhile, in order to ensure the sealing effect of the piston 5, the piston ring is arranged on the piston 5 in a plurality of circles, and the piston cylinder 1, the piston rod 4 and the piston 5 are the prior art well known to those skilled. The lower connecting ring 101 and the upper connecting ring 201 are mainly used for connecting the upper and lower shock absorbing members, and since the connection mode is generally shaft connection, the upper and lower connecting rings 101 in this embodiment are connection intermediate members having shaft holes. The main difference of this embodiment and current bumper shock absorber lies in setting up 2 mechanisms of guide cylinder, 2 upper ends of guide cylinder are equipped with go up go-between 201, the pot head is on piston cylinder 1 down, 2 internal face of guide cylinder and the laminating of 1 outer wall of piston cylinder, piston rod 4 fixed connection is inside 2 of guide cylinder, concrete during operation, 2 and piston 5 synchronous motion of guide cylinder, form the direction of 1 internal face of piston cylinder and outer wall, guarantee the axiality of piston rod 4 motion, avoid piston rod 4 and barrel contact department wearing and tearing to reveal and cause the condition that weakens the damping effect of bumper shock absorber.

Further, in order to improve the shock attenuation effect, this embodiment can also set up holding ring 202 at 2 lower extremes of guide cylinder, and 1 lower extreme of piston cylinder is established and is set up the holding ring, goes up holding ring 202 and is connected with second damping spring 6 down between holding ring 101, and the synchronous compression of the first damping spring 3 of during operation and second damping spring 6 resets, improves bumper shock absorber shock attenuation effect. Generally, in order to avoid the second damping spring 6 from falling off during operation and ensure that the second damping spring 6 has good axial elasticity, the second damping spring 6 is sleeved outside the piston cylinder 1.

Further, for the convenience of the processing and the assembly of the shock absorber, the upper end of the piston rod 4 is provided with a connecting thread column 401, the upper end of the guide cylinder 2 is provided with a jack through which the connecting thread column 401 penetrates, the connecting thread column 401 penetrates through the jack and is screwed with a nut, the piston rod 4 is detachably connected onto the guide cylinder 2 through the matching of the connecting thread column 401 and the nut, and the shock absorber is convenient to process and assemble.

Further, in order to avoid interference between the upper connection ring 201 and the connection threaded column 401, two upper connection rings 201 are provided, and are respectively arranged on two sides of the connection threaded column 401 in a butt joint manner.

The embodiment of the present invention is the above. The above embodiments and the specific parameters in the embodiments are only for the purpose of clearly expressing the verification process of the utility model, and are not used to limit the patent protection scope of the present invention, the patent protection scope of the present invention is still subject to the claims, all the structural changes equivalent to the contents of the description and the drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a double-cylinder shock absorber, includes piston cylinder (1), piston cylinder (1) inside is equipped with piston (5), be connected with piston rod (4) on piston (5), piston cylinder (1) lower extreme is equipped with down go-between (101), piston rod (4) stretch out that piston cylinder (1) are external, piston rod (4) stretch out and overlap on the external body of rod of piston cylinder (1) have first damping spring (3), its characterized in that: the outer portion of the first damping spring (3) is sleeved with the guide cylinder (2), the upper end of the guide cylinder (2) is provided with an upper connecting ring (201), the lower end of the guide cylinder is sleeved on the piston cylinder (1), the inner wall surface of the guide cylinder (2) is attached to the outer wall surface of the piston cylinder (1), and the piston rod (4) is fixedly connected to the inner portion of the guide cylinder (2).

2. The dual-tube shock absorber according to claim 1, wherein: an upper positioning ring (202) is arranged at the lower end of the guide cylinder (2), a lower positioning ring (102) is arranged at the lower end of the piston cylinder (1), and a second damping spring (6) is connected between the upper positioning ring (202) and the lower positioning ring (102).

3. The dual-tube shock absorber according to claim 2, wherein: and the second damping spring (6) is sleeved outside the piston cylinder (1).

4. The dual-tube shock absorber according to claim 1, wherein: the piston rod (4) upper end is equipped with connecting thread post (401), guide cylinder (2) upper end is equipped with the jack that connecting thread post (401) penetrated, connecting thread post (401) pass the jack and close the nut on it soon.

5. The dual-tube shock absorber according to claim 4, wherein: the number of the upper connecting rings (201) is two, and the two upper connecting rings are respectively arranged on two sides of the connecting threaded column (401) in a butt joint mode.

6. The dual-tube shock absorber according to any one of claims 1 to 5, wherein: and piston rings are arranged on the piston (5).

7. The dual-tube shock absorber according to claim 6, wherein: the piston ring is arranged on the piston (5) in a plurality of rings.