CN112324833A - Internal hydraulic buffering stop structure of shock absorber - Google Patents
Internal hydraulic buffering stop structure of shock absorber Download PDFInfo
- Publication number
- CN112324833A CN112324833A CN202011319113.XA CN202011319113A CN112324833A CN 112324833 A CN112324833 A CN 112324833A CN 202011319113 A CN202011319113 A CN 202011319113A CN 112324833 A CN112324833 A CN 112324833A
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- CN
- China
- Prior art keywords
- shock absorber
- stop
- snap ring
- cylinder body
- pressure relief
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/58—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to an internal hydraulic buffering stop structure of a shock absorber, which comprises: the shock absorber comprises a shock absorber body, wherein the shock absorber body comprises a cylinder body and a telescopic rod, and one end of the cylinder body, which is connected with the telescopic rod, is connected with a necking section through a round section; the buffering stop mechanism comprises a buffering limit sleeve and a stop snap ring, and the buffering limit sleeve is positioned on one side of the stop snap ring, which is close to the neck reducing section; at least one pressure relief groove is positioned on the inner wall of the neck section. The invention has simple structure, stable performance and convenient operation, and is beneficial to batch production; the contact surface of the buffer stop collar and the end part component of the cylinder body is wavy, so that the impact sound during stopping is effectively reduced; the neck section with end a snap ring, the cooperation of pressure relief groove, when guaranteeing the travelling comfort, effectively increased the damping before buffering stop collar and the contact of cylinder body end member, this kind of mode helps promoting whole car performance, and the impact to whole car under the complicated topography condition of better adaptation improves whole car security and travelling comfort.
Description
Technical Field
The invention relates to the technical field of shock absorbers, in particular to an internal hydraulic buffering and stopping structure of a shock absorber.
Background
At present, the traditional double-cylinder type shock absorbers are mostly adopted in class A and class A + household cars in China markets, and due to the limits of cost and technical capacity, the shock absorbers are relatively simple in structure and do not have structures such as relatively high-end air springs and the like. A class car often uses on three four-wire cities and the relatively poor rural road surface of road surface quality, and there are circumstances such as pothole and deceleration strip on the road surface like this, can make the shock absorber often be in the operating mode of maximum tensile state in the twinkling of an eye. Because the traditional shock absorber generally adopts the buffer limiting protection block made of nitrile rubber and PUR materials, the shock absorber plays a role in protecting the shock absorber during instantaneous over-travel stretching, but obvious impact discomfort can be generated during the working of the shock absorber, and the driving and riding comfort is influenced.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides an internal hydraulic buffering stop structure of a shock absorber.
In order to achieve the purpose, the invention adopts the following technical scheme:
an internal hydraulic buffering stop structure of a shock absorber comprises:
the shock absorber comprises a shock absorber body, wherein the shock absorber body comprises a cylinder body and a telescopic rod, one end of the telescopic rod is positioned in an inner cavity of the cylinder body, one end of the cylinder body, which is connected with the telescopic rod, is connected with a necking section through a round table section, and the necking section is a cylinder section with the inner diameter smaller than that of other positions of the cylinder body;
the buffering stop mechanism comprises a buffering limit sleeve and a stop snap ring, the buffering limit sleeve and the stop snap ring are fixedly sleeved on the telescopic rod, and the buffering limit sleeve is positioned on one side of the stop snap ring, which is close to one end of the telescopic rod, which extends out of the cylinder body;
at least one pressure relief groove is positioned on the inner wall of the neck section.
Furthermore, the stop snap ring is fixed on the telescopic rod through spring seats on two sides of the stop snap ring.
Furthermore, the spring holder is limited through a spring snap ring on the telescopic rod.
Furthermore, the surface of the buffering limiting sleeve, which is far away from the stop snap ring, is wavy.
Furthermore, the stop snap ring is a zirconium chromium copper snap ring.
Furthermore, the number of the pressure relief grooves is three, and the pressure relief grooves are arranged around the axis of the cylinder body at equal angular intervals.
Furthermore, one end of the pressure relief groove close to the circular truncated cone section is wider, and the other end of the pressure relief groove far away from the circular truncated cone section is narrower.
Furthermore, the depth of the pressure relief groove is uniformly transited from 0.5mm close to one end of the circular truncated cone section to 0mm far away from one end of the circular truncated cone section.
The invention has the beneficial effects that: the invention has simple structure, stable performance and convenient operation, and is beneficial to batch production; the contact surface of the buffer stop collar and the end part component of the cylinder body is wavy, so that the impact sound during stopping is effectively reduced; the neck section with end a snap ring, the cooperation of pressure relief groove, when guaranteeing the travelling comfort, effectively increased the damping before buffering stop collar and the contact of cylinder body end member, this kind of mode helps promoting whole car performance, and the impact to whole car under the complicated topography condition of better adaptation improves whole car security and travelling comfort.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the cylinder;
in the figure: 1-a shock absorber body; 11-a cylinder body; 12-a telescopic rod; 2-a buffer stop mechanism; 21-a buffer stop collar; 22-stop snap ring; 23-spring seats; 24-a snap ring; 3-a pressure relief groove;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in the figure, the internal hydraulic buffering stop structure of the shock absorber comprises:
the shock absorber comprises a shock absorber body 1, wherein the shock absorber body 1 comprises a cylinder body 11 and an expansion rod 12, one end of the expansion rod 12 is positioned in an inner cavity of the cylinder body 11, one end, connected with the expansion rod 12, of the cylinder body 11 is connected with a necking section through a circular truncated cone section, and the necking section is a cylinder section with the inner diameter smaller than that of other positions of the cylinder body 11;
the buffer stop mechanism 2 comprises a buffer limit sleeve 21 and a stop snap ring 22, the buffer limit sleeve 21 and the stop snap ring 22 are fixedly sleeved on the telescopic rod 12, and the buffer limit sleeve 21 is positioned on one side of the stop snap ring 22, which is close to one end of the telescopic rod 12 extending out of the cylinder body 1;
at least one pressure relief groove 3, the pressure relief groove 3 is positioned on the inner wall of the neck section.
Furthermore, the stop snap ring 22 is fixed on the telescopic rod 12 through spring seats 23 at two sides thereof.
Further, the spring seat 23 is limited by a snap ring 24 on the telescopic rod 12.
Furthermore, the surface of the buffering limiting sleeve 21 away from the stop snap ring 22 is wavy.
Further, the stop snap ring 22 is a zirconium chromium copper snap ring.
Further, the number of the pressure relief grooves 3 is three and the pressure relief grooves are arranged around the axis of the cylinder 11 at equal angular intervals.
Further, the length of the pressure relief groove 3 is 30mm, the end of the pressure relief groove 3 close to the circular table section is wider, the angle of the pressure relief groove 3 occupying the cross section of the cylinder body 11 is 24 degrees, and the end far away from the circular table section is narrower.
Further, the depth of the pressure relief groove 3 is uniformly transited from 0.5mm close to one end of the circular truncated cone section to 0mm far away from one end of the circular truncated cone section.
Furthermore, the buffering limiting sleeve 21 is made of high-elasticity and heat-stable nylon PA66+ GF 30%.
When the shock absorber performs recovery work, the buffer stop mechanism 2 moves to the necking section of the cylinder body 11, and the necking section instantly forms an approximately closed pressure cavity under the action of the stop snap ring 22, so that the extra large recovery damping force of the whole shock absorber is increased, and the hydraulic buffer stop function is realized; the pressure relief groove 3 that three axial set up can prevent effectively that hydraulic cushion from ending the position and recovering damping force too big, makes and recovers the resistance and increase gradually along with tensile degree's increase to improve whole car suspension system's travelling comfort and operate the stationarity.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and variations are within the scope of the invention.
Claims (8)
1. An internal hydraulic buffering stop structure of a shock absorber is characterized by comprising:
the shock absorber comprises a shock absorber body (1), wherein the shock absorber body (1) comprises a cylinder body (11) and an expansion rod (12), one end of the expansion rod (12) is positioned in an inner cavity of the cylinder body (11), and one end, connected with the expansion rod (12), of the cylinder body (11) is connected with a necking section through a circular truncated cone section;
the buffer stop mechanism (2), the buffer stop mechanism (2) comprises a buffer limit sleeve (21) and a stop snap ring (22), the buffer limit sleeve (21) and the stop snap ring (22) are fixedly sleeved on the telescopic rod (12), and the buffer limit sleeve (21) is positioned on one side of the stop snap ring (22) close to one end of the telescopic rod (12) extending out of the cylinder body (1);
at least one pressure relief groove (3), the pressure relief groove (3) is positioned on the inner wall of the neck section.
2. The internal hydraulic buffering stop structure of the shock absorber as claimed in claim 1, wherein the stop snap ring (22) is fixed on the telescopic rod (12) through spring seats (23) at both sides of the stop snap ring.
3. The internal hydraulic buffering and stopping structure of the shock absorber as recited in claim 2, wherein the spring seat (23) is limited by a spring snap ring (24) on the telescopic rod (12).
4. The internal hydraulic buffering stop structure of the shock absorber as claimed in claim 1, wherein the surface of the buffering stop collar (21) far away from the stop snap ring (22) is wavy.
5. The internal hydraulic cushion stop structure of the shock absorber as set forth in claim 1, wherein the stop snap ring (22) is a zirconium chromium copper snap ring.
6. The internal hydraulic buffering and stopping structure of the shock absorber as claimed in claim 1, wherein the number of the pressure relief grooves (3) is three and the pressure relief grooves are arranged around the axis of the cylinder body (11) at equal angular intervals.
7. The internal hydraulic buffering stop structure of the shock absorber as claimed in claim 1, wherein the pressure relief groove (3) is wider at the end close to the circular truncated cone section and narrower at the end far from the circular truncated cone section.
8. The internal hydraulic buffering stop structure of the shock absorber as claimed in claim 1, wherein the depth of the pressure relief groove (3) is uniformly transited from 0.5mm close to one end of the circular truncated cone section to 0mm far from one end of the circular truncated cone section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319113.XA CN112324833A (en) | 2020-11-23 | 2020-11-23 | Internal hydraulic buffering stop structure of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011319113.XA CN112324833A (en) | 2020-11-23 | 2020-11-23 | Internal hydraulic buffering stop structure of shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112324833A true CN112324833A (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011319113.XA Pending CN112324833A (en) | 2020-11-23 | 2020-11-23 | Internal hydraulic buffering stop structure of shock absorber |
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| Country | Link |
|---|---|
| CN (1) | CN112324833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958649A (en) * | 2021-10-31 | 2022-01-21 | 成都九鼎科技(集团)有限公司 | Hydraulic buffer assembly of shock absorber and gradual change type stroke adjustment shock absorber |
-
2020
- 2020-11-23 CN CN202011319113.XA patent/CN112324833A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958649A (en) * | 2021-10-31 | 2022-01-21 | 成都九鼎科技(集团)有限公司 | Hydraulic buffer assembly of shock absorber and gradual change type stroke adjustment shock absorber |
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