CN111059199A - A contraction booster damper - Google Patents
A contraction booster damper Download PDFInfo
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- CN111059199A CN111059199A CN202010049063.1A CN202010049063A CN111059199A CN 111059199 A CN111059199 A CN 111059199A CN 202010049063 A CN202010049063 A CN 202010049063A CN 111059199 A CN111059199 A CN 111059199A
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- piston rod
- sealing
- piston
- cavity
- contraction
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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
- F16F9/3207—Constructional features
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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
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/066—Units characterised by the partition, baffle or like element
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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
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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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
- F16F9/3207—Constructional features
- F16F9/3221—Constructional features of piston rods
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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
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
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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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/368—Sealings in pistons
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
本发明涉及一种阻尼器，具体涉及一种收缩助力阻尼器，包括缸筒及设置在缸筒内部的活塞杆组件，缸筒中间指定位置固定有密封组件，密封组件用于密封和分离第一腔体和第二腔体，活塞杆组件包括活塞杆及固定在末端的垫片、活塞环和活塞，活塞杆的活塞端设置在第一腔体内，其中间设置为阶梯型台阶面，阶梯型台阶面设置在第二腔体内，密封组件分别与缸筒内壁和活塞杆大径密封；垫片与活塞杆的连接处设置有孔槽结构；第二腔体的末端通过气封进行密封，在气封的外面进一步装上导向块进行旋铆封口。本发明收缩助力阻尼器有效的解决了现有阻尼器自身无法稳定助力的困境。
The invention relates to a damper, in particular to a shrinkage booster damper, comprising a cylinder tube and a piston rod assembly arranged inside the cylinder tube, a sealing component is fixed at a designated position in the middle of the cylinder tube, and the sealing component is used for sealing and separating the first The cavity and the second cavity, the piston rod assembly includes the piston rod and the gasket fixed at the end, the piston ring and the piston, the piston end of the piston rod is set in the first cavity, and the middle is set as a stepped stepped surface. The stepped surface is arranged in the second cavity, and the sealing components are respectively sealed with the inner wall of the cylinder barrel and the large diameter of the piston rod; the connection between the gasket and the piston rod is provided with a hole and groove structure; the end of the second cavity is sealed by an air seal. The outside of the air seal is further equipped with a guide block for riveting sealing. The shrink assist damper of the present invention effectively solves the dilemma that the existing damper itself cannot assist stably.
Description
Technical Field
The invention relates to a damper, in particular to a contraction assisting damper.
Background
With the development of industrial technology, the functional requirements of the gas spring are higher and higher. Many of the existing downward-turning mechanisms are provided with dampers, so that the slow descending effect is achieved. But the existing dampers have no contraction direction boosting function. Therefore, in order to reduce the hand force when the flip-down mechanism is closed, the existing method is generally that 1, a compression spring is added in the damper, so that the resistance effect is generated when the damper is stretched. 2. A tension spring is additionally arranged in the downward-turning mechanism and is matched with a damper for use. Thereby achieving the effects of damping and power assisting. The method has the following problems that (1) the boosting effect generated by the pressure spring is not obvious, and the application range is narrow. (2) The tension spring is used in a matching way, so that the cost is increased, and operators are easily injured by clamping in the using process.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a contraction boosting damper, which has the following specific technical scheme:
a contraction booster damper comprises a cylinder barrel and a piston rod component arranged in the cylinder barrel,
a sealing assembly is fixed at a designated position in the middle of the cylinder barrel and used for sealing and separating a first cavity and a second cavity, the piston rod assembly comprises a piston rod, a gasket, a piston ring and a piston, the gasket, the piston ring and the piston are fixed at the tail end, the piston end of the piston rod is arranged in the first cavity, a stepped step surface is arranged in the middle of the piston end, the stepped step surface is arranged in the second cavity, and the sealing assembly is respectively sealed with the inner wall of the cylinder barrel and the large diameter of the piston rod;
a hole groove structure is arranged at the joint of the gasket and the piston rod;
the tail end of the second cavity is sealed through an air seal, and a guide block is further arranged outside the air seal to be riveted and sealed.
Further, the hole-groove structure is as follows: a hole groove is arranged on the gasket; or, a groove is arranged on the inner wall of the cylinder barrel and is positioned on the contact surface of the gasket and the cylinder barrel.
Furthermore, oil is injected into the first cavity, and high-pressure gas is filled into the second cavity.
Furthermore, the sealing assembly comprises a first sealing element, a second sealing element and a separation fixing ring, the separation fixing ring is connected with the piston rod in a sealing mode, a groove matched with the first sealing element is formed in the inner side of the separation fixing ring, a groove matched with the second sealing element is formed in the outer side of the separation fixing ring, and the first sealing element and the second sealing element are installed on the corresponding grooves respectively and are connected with the inner wall of the cylinder barrel in a sealing mode.
Furthermore, the sealing assembly consists of a third sealing element and at least one retainer ring, wherein the outer annular wall of the third sealing element is connected with the inner wall of the cylinder in a sealing manner, and the inner annular wall of the third sealing element is in sealing contact with the piston rod and is limited and fixed by the retainer ring.
Preferably, the sealing assembly consists of a third sealing element and two retainer rings, wherein the third sealing element is arranged between the two retainer rings and is tightly attached to the two retainer rings, and the two retainer rings limit and fix the third sealing element.
The piston rod structure is cylindrical step type, and in piston rod stretching and compression process, the step ring surface of piston rod is in the high-pressure gas all the time, and the step ring surface of piston rod receives the high-pressure gas effect in the second cavity for the piston rod all keeps having certain contractility in the stroke.
The piston in the oil cavity can provide damping force, and in the stretching process of the piston rod, the piston ring is attached to the gasket, so that oil can only flow through the hole groove structure to generate the damping force, and the piston rod is decelerated. The higher the piston rod extension speed, the greater the damping force generated.
The sealing assembly is fixed at a designated position inside the cylinder barrel so as to match different size requirements.
The invention has the beneficial effects that: according to the contraction power-assisted damper, in the stretching process, the oil liquid generates damping force when flowing through the hole groove structure, so that the deceleration effect in the stretching direction of the piston rod is achieved, in the compression process, air pressure acts on the annular step surface of the step-shaped piston rod to generate contraction force, so that the contraction direction power-assisted effect is achieved, and the problem that the existing damper cannot stably assist power is effectively solved.
The boosting effect of the invention depends on the pressure of the gas in the cylinder barrel, and the inflation pressure can be accurately adjusted according to actual requirements, thereby enlarging the application range of force values. When the speed is too fast, the damping force is increased along with the speed, and the device is safer and more stable.
The damping effect of the hydraulic booster is realized by a hydraulic principle, the boosting effect is realized by an air pressure principle, the loss in working is small, and the product failure risk is effectively reduced. The invention does not need additional structural parts, can effectively reduce the development cost and generate good economic benefit.
Drawings
FIG. 1 is a three-dimensional schematic view of a contraction-assist damper of the present invention.
FIG. 2 is a side view of the contraction assist damper of the present invention.
Fig. 3 is a schematic partial cross-sectional view of fig. 2.
The piston assembly comprises a cylinder barrel 1, a piston assembly 2, a gasket 201, a piston ring 202, a piston 203, a piston 204, a piston rod 3, a first cavity 4, a sealing assembly 411, a first sealing element 412, a separating and fixing ring 413, a second sealing element 421, a retainer ring 422, a third sealing element 5, a second cavity 6, a gas seal 7 and a guide block 7.
The specific implementation mode is as follows:
for the purpose of promoting an understanding of the invention, reference will now be made in detail to the embodiments of the invention illustrated in the accompanying drawings.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
Example one
As shown in fig. 1 and 2, a contraction boosting damper comprises a cylinder 1 and a piston rod assembly 2 arranged inside the cylinder 1,
a sealing assembly 4 is fixed at a designated position in the middle of the cylinder barrel 1, the sealing assembly 4 is used for sealing and separating a first cavity 3 and a second cavity 5, the piston rod assembly 2 comprises a piston rod 204, a gasket 201, a piston ring 202 and a piston 203 which are fixed at the tail end, the piston end of the piston rod 204 is arranged in the first cavity 3, a step-shaped step surface is arranged in the middle of the piston end, the step-shaped step surface is arranged in the second cavity 5, and the sealing assembly 4 is respectively sealed with the inner wall of the cylinder barrel 1 and the major diameter of the piston rod 204;
the joint of the gasket 201 and the piston rod 204 is provided with a hole groove structure, the tail end of the second cavity 5 is sealed through an air seal 6, and a guide block 7 is further arranged outside the air seal 6 for spin riveting and sealing.
The hole groove structure is as follows: a hole groove is arranged on the gasket 201;
or, the hole-groove structure is as follows: a groove is arranged on the inner wall of the cylinder barrel and is positioned on the contact surface of the gasket and the cylinder barrel.
Oil is injected into the first cavity 3, and high-pressure gas is injected into the second cavity 5.
Further, the sealing assembly 4 is composed of a first sealing element 411, a second sealing element 413 and a separating and fixing ring 412, the separating and fixing ring 412 is connected with the piston rod 204 in a sealing mode, a groove matched with the first sealing element 411 is formed in the inner side of the separating and fixing ring 412, a groove matched with the second sealing element 413 is formed in the outer side of the separating and fixing ring 412, and the first sealing element 411 and the second sealing element 413 are installed on the corresponding grooves respectively and are connected with the inner wall of the cylinder barrel 1 in a sealing mode.
The piston rod 204 is in a cylindrical step shape, in the process of stretching and compressing the piston rod, the step annular surface of the piston rod 204 is always positioned in high-pressure gas, and the step annular surface of the piston rod 204 is acted by the high-pressure gas in the second cavity 5, so that the piston rod 204 keeps certain contraction force in the stroke.
The piston 203 in the first chamber 3 may provide a damping force. During the extension of the piston rod 204, the piston ring 202 abuts against the gasket 201, and oil can only flow through the hole-groove structure, so that the damping force is generated, and the piston rod 204 is decelerated. The greater the extension speed of the piston rod 204, the greater the damping force generated.
The seal assembly 4 is fixed at a designated position inside the cylinder to match different size requirements.
Example two
As shown in fig. 1 and 3, a contraction boosting damper comprises a cylinder 1 and a piston rod assembly 2 arranged inside the cylinder 1,
a sealing assembly 4 is fixed at a designated position in the middle of the cylinder barrel 1, the sealing assembly 4 is used for sealing and separating a first cavity 3 and a second cavity 5, the piston rod assembly 2 comprises a piston rod 204, a gasket 201, a piston ring 202 and a piston 203 which are fixed at the tail end, the piston end of the piston rod 204 is arranged in the first cavity 3, a step-shaped step surface is arranged in the middle of the piston end, the step-shaped step surface is arranged in the second cavity 5, and the sealing assembly 4 is respectively sealed with the inner wall of the cylinder barrel 1 and the major diameter of the piston rod 204;
the joint of the gasket 201 and the piston rod 204 is provided with a hole groove structure, the tail end of the second cavity 5 is sealed through an air seal 6, and a guide block 7 is further arranged outside the air seal 6 for spin riveting and sealing.
The hole groove structure is as follows: a hole groove is arranged on the gasket 201;
or, the hole-groove structure is as follows: a groove is arranged on the inner wall of the cylinder barrel and is positioned on the contact surface of the gasket and the cylinder barrel.
Oil is injected into the first cavity 3, and high-pressure gas is injected into the second cavity 5.
Further, the sealing assembly 4 is composed of a third sealing element 422 and two retaining rings 421, the third sealing element 422 is disposed between the two retaining rings 421 and clings to the two retaining rings 421, an outer annular wall of the third sealing element 422 is connected with an inner wall of the cylinder barrel 1 in a sealing manner, and an inner annular wall of the third sealing element 3 is in sealing contact with the piston rod 204 and is fixed in a limiting manner through the two retaining rings 421.
The piston rod 204 is in a cylindrical step shape, and in the process of stretching and compressing the piston rod 204, the step annular surface of the piston rod 204 is always located in high-pressure gas, and the step annular surface of the piston rod 204 is acted by the high-pressure gas in the second cavity 5, so that the piston rod 204 keeps a certain contraction force in the stroke.
The piston in the first chamber 3 may provide a damping force. During the extension of the piston rod 204, the piston ring 202 abuts against the gasket 201, and oil can only flow through the hole-groove structure, so that the damping force is generated, and the piston rod 204 is decelerated. The greater the extension speed of the piston rod 204, the greater the damping force generated.
The seal assembly 4 is fixed at a designated position inside the cylinder to match different size requirements.
The technical means disclosed by the scheme of the invention are not limited to the technical means disclosed by the technical means, and also comprise the technical scheme formed by equivalent replacement of the technical features. The present invention is not limited to the details given herein, but is within the ordinary knowledge of those skilled in the art.
Claims (7)
1. A contraction booster damper is characterized by comprising a cylinder barrel and a piston rod assembly arranged in the cylinder barrel,
a sealing assembly is fixed at a designated position in the middle of the cylinder barrel and used for sealing and separating a first cavity and a second cavity, the piston rod assembly comprises a piston rod, a gasket, a piston ring and a piston, the gasket, the piston ring and the piston are fixed at the tail end, the piston end of the piston rod is arranged in the first cavity, a stepped step surface is arranged in the middle of the piston end, the stepped step surface is arranged in the second cavity, and the sealing assembly is respectively sealed with the inner wall of the cylinder barrel and the large diameter of the piston rod;
a hole groove structure is arranged at the joint of the gasket and the piston rod;
the tail end of the second cavity is sealed through an air seal, and a guide block is further arranged outside the air seal to be riveted and sealed.
2. A contraction assist damper according to claim 1, wherein the hole and groove structure is: the gasket is provided with a hole groove.
3. A contraction assist damper according to claim 1, wherein the hole and groove structure is: a groove is arranged on the inner wall of the cylinder barrel and is positioned on the contact surface of the gasket and the cylinder barrel.
4. The contraction assist damper according to claim 1, wherein the first chamber is filled with oil, and the second chamber is filled with high pressure gas.
5. The contraction-assisted damper according to claim 1, wherein the seal assembly comprises a first seal member, a second seal member and a separate fixing ring, the separate fixing ring is connected with the piston rod in a sealing manner, a groove matched with the first seal member is formed in the inner side of the separate fixing ring, a groove matched with the second seal member is formed in the outer side of the separate fixing ring, and the first seal member and the second seal member are respectively mounted on the corresponding grooves and are connected with the inner wall of the cylinder in a sealing manner.
6. The contraction assisted power damper according to claim 1, wherein the sealing assembly comprises a third sealing member and at least one retaining ring, an outer annular wall of the third sealing member is connected with the inner wall of the cylinder in a sealing manner, and an inner annular wall of the third sealing member is in sealing contact with the piston rod and is retained and fixed by the retaining ring.
7. The contraction-assisted damper of claim 6, wherein the seal assembly comprises a third sealing element and two retaining rings, the third sealing element is located between the two retaining rings and is tightly attached to the two retaining rings, and the two retaining rings limit and fix the third sealing element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111290.6A CN110725889A (en) | 2019-11-14 | 2019-11-14 | Contraction power-assisted damper |
| CN2019111112906 | 2019-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059199A true CN111059199A (en) | 2020-04-24 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911111290.6A Pending CN110725889A (en) | 2019-11-14 | 2019-11-14 | Contraction power-assisted damper |
| CN202010049063.1A Pending CN111059199A (en) | 2019-11-14 | 2020-01-16 | A contraction booster damper |
| CN202020096286.9U Active CN212080014U (en) | 2019-11-14 | 2020-01-16 | Contraction power-assisted damper |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911111290.6A Pending CN110725889A (en) | 2019-11-14 | 2019-11-14 | Contraction power-assisted damper |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020096286.9U Active CN212080014U (en) | 2019-11-14 | 2020-01-16 | Contraction power-assisted damper |
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| Country | Link |
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| CN (3) | CN110725889A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725889A (en) * | 2019-11-14 | 2020-01-24 | 苏世博（南京）减振系统有限公司 | Contraction power-assisted damper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4035046A1 (en) * | 1990-11-05 | 1992-05-07 | Obering Hermann Bansbach Gmbh | Gas spring with tubular housing - has inner and outer compartments, with piston rod and cylinder, overflow duct, and gas and hydraulic compartments |
| CN203641377U (en) * | 2014-01-14 | 2014-06-11 | 株洲时代新材料科技股份有限公司 | Straight magneto-rheological damper with adjustable damping force |
| CN203962833U (en) * | 2014-07-25 | 2014-11-26 | 安徽江淮汽车股份有限公司 | A kind of one-way damper |
| CN104930105A (en) * | 2014-03-19 | 2015-09-23 | 黄庆盛 | Hydraulic damper |
| CN209483853U (en) * | 2018-11-21 | 2019-10-11 | 震安科技股份有限公司 | Viscous Fluid Damper with Fatigue Resistant Properties |
| CN212080014U (en) * | 2019-11-14 | 2020-12-04 | 苏世博（南京）减振系统有限公司 | Contraction power-assisted damper |
-
2019
- 2019-11-14 CN CN201911111290.6A patent/CN110725889A/en active Pending
-
2020
- 2020-01-16 CN CN202010049063.1A patent/CN111059199A/en active Pending
- 2020-01-16 CN CN202020096286.9U patent/CN212080014U/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4035046A1 (en) * | 1990-11-05 | 1992-05-07 | Obering Hermann Bansbach Gmbh | Gas spring with tubular housing - has inner and outer compartments, with piston rod and cylinder, overflow duct, and gas and hydraulic compartments |
| CN203641377U (en) * | 2014-01-14 | 2014-06-11 | 株洲时代新材料科技股份有限公司 | Straight magneto-rheological damper with adjustable damping force |
| CN104930105A (en) * | 2014-03-19 | 2015-09-23 | 黄庆盛 | Hydraulic damper |
| CN203962833U (en) * | 2014-07-25 | 2014-11-26 | 安徽江淮汽车股份有限公司 | A kind of one-way damper |
| CN209483853U (en) * | 2018-11-21 | 2019-10-11 | 震安科技股份有限公司 | Viscous Fluid Damper with Fatigue Resistant Properties |
| CN212080014U (en) * | 2019-11-14 | 2020-12-04 | 苏世博（南京）减振系统有限公司 | Contraction power-assisted damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110725889A (en) | 2020-01-24 |
| CN212080014U (en) | 2020-12-04 |
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Application publication date: 20200424 |