CN102213287A - Throttle buffering gas spring - Google Patents

Throttle buffering gas spring Download PDF

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Publication number
CN102213287A
CN102213287A CN 201110135340 CN201110135340A CN102213287A CN 102213287 A CN102213287 A CN 102213287A CN 201110135340 CN201110135340 CN 201110135340 CN 201110135340 A CN201110135340 A CN 201110135340A CN 102213287 A CN102213287 A CN 102213287A
Authority
CN
China
Prior art keywords
piston
groove
diameter
ring
cylinder barrel
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
Application number
CN 201110135340
Other languages
Chinese (zh)
Inventor
姜明朝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGDU MINGRUI GAS SPRING MANUFACTURING CO LTD
Original Assignee
JIANGDU MINGRUI GAS SPRING MANUFACTURING CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGDU MINGRUI GAS SPRING MANUFACTURING CO LTD filed Critical JIANGDU MINGRUI GAS SPRING MANUFACTURING CO LTD
Priority to CN 201110135340 priority Critical patent/CN102213287A/en
Publication of CN102213287A publication Critical patent/CN102213287A/en
Pending legal-status Critical Current

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Abstract

The invention provides a throttle buffering gas spring, which relates to a structure of a gas spring, and comprises a cylinder; a piston rod is arranged in the cylinder in a penetrable manner; a first groove is arranged outside the rear end of the piston rod radially; a front retainer ring and a piston are arranged in a piston rod sleeve in the first groove; a rod cavity is arranged at the front side of the piston; and a rodless cavity is arranged at the rear side of the piston; a second groove is formed outside the front retainer ring; the piston comprises a small diameter section and a large diameter section that are arranged integrally; a third groove that is communicated with the second groove is formed outside the small diameter section of the piston; a seal ring is sleeved outside the small diameter section of the piston in a sliding manner; a throttle hole that is communicated with the third groove is formed on the large diameter section of the piston; the rear end of the large diameter section of the piston is axially provided with a zigzag flow passage that is communicated with the throttle hole; a fourth groove that is communicated with the zigzag flow passage is axially formed at the rear end of the large diameter section of the piston; the fourth groove is arranged at one end of the zigzag flow passage far away from the throttle hole; and the fourth groove is communicated with the rodless cavity. According to the throttle buffering gas spring, gas or oil liquid can be buffered.

Description

Throttling cushion gas spring
Technical field
The present invention relates to the field of a kind of spring, vibration damper, damping device, particularly the structure of air spring.
Background technique
Air spring is a kind ofly can play support, buffering, braking, highly regulate and the accessory of function such as angle adjustment, is widely used in fields such as medical equipment, automobile, furniture, Weaving device, machine-building.Principle is to charge into inert gas or gas mixture in airtight cylinder barrel, make the pressure in the cavity be higher than atmospheric several times or tens times, thereby the pressure difference that the cross-section area that utilizes piston rod produces less than the cross-section area of piston realize the motion of piston rod.At present, in the air spring stretching process, stretch out speed, bore aperture and Sealing (O shape circle) bottom land on piston rodless cavity limit and gang up, control the speed of stretching out with the diameter of the aperture (throttle orifice) of ganging up in order to control it.When needs low speed stretches, throttle orifice design too small, bad processing, and cleanliness in the chamber had relatively high expectations.If will be under terminal is refueled the situation of buffering, its velocity variations be excessive, can occur jam phenomenon such as creep when serious.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, the throttling cushion gas spring of a kind of available buffer gas or fluid is provided.
The object of the present invention is achieved like this: throttling cushion gas spring, comprise cylinder barrel, place piston rod in the cylinder barrel, the front end of piston rod is arranged on outside the cylinder barrel, and the rear end of piston rod is arranged in the cylinder barrel, the rear end outer radial of piston rod is provided with first groove, piston rod in first groove is nested with front circle, piston and back back-up ring outward, the rear side of back-up ring before piston is arranged on, and back back-up ring is arranged on the rear side of piston, the front side of piston is a rod chamber, and the rear side of piston is a rodless cavity; The back-up ring peripheral hardware is put second groove before described, described piston comprises reduced diameter section and the enlarged diameter section that disjunctor is provided with, the reduced diameter section of piston is arranged on the front side of enlarged diameter section, the reduced diameter section of piston is provided with the 3rd groove that is connected with second groove outward, the outer slideable seal ring that is nested with of the reduced diameter section of piston, seal ring is equipped with in described cylinder barrel, the throttle orifice that is connected with the 3rd groove is set on the enlarged diameter section of piston, the external diameter of described back back-up ring is less than the internal diameter of cylinder barrel, the rear end of the enlarged diameter section of described piston axially is provided with the tortuous runner that is connected with throttle orifice, the rear end of the enlarged diameter section of piston radially is provided with the 4th groove that is connected with tortuous runner, the 4th groove is arranged on the end of tortuous runner away from throttle orifice, and the 4th groove is connected with described rodless cavity.
The present invention is by above design, gap after gas or fluid enter from rodless cavity between back-up ring and the cylinder barrel, enter the 4th groove, enter tortuous runner, enter throttle orifice again, need flow through the gas or the fluid of throttle orifice with the runner of complications elder generation buffering, it is too small that throttle orifice also no longer needs to design, and just can play the purpose of good throttling deceleration.When being stretched over terminal by fluid cushion, jam phenomenon such as creep can not occur this moment yet under throttle orifice is not very little situation.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 be among Fig. 1 A-A to view.
Among the figure, 1 piston rod, 2 cylinder barrels, 3 preceding back-up rings, 4 second grooves, 5 seal rings, 6 the 3rd grooves, 7 throttle orifices, 8 tortuous runners, 9 pistons, 9-1 reduced diameter section, 9-2 enlarged diameter section, 10 the 4th grooves, 11 back back-up rings, 12 first grooves, 13 rod chambers, 14 rodless cavities.
Embodiment
As shown in Figure 1, 2, for throttling cushion gas spring, comprise cylinder barrel 2, place piston rod 1 in the cylinder barrel 2, the front end of piston rod 1 is arranged on outside the cylinder barrel 2, the rear end of piston rod 1 is arranged in the cylinder barrel 2, and the rear end outer radial of piston rod 1 is provided with piston rod 1 outer front circle 3, piston 9 and the back back-up ring 11 of being nested with in first groove, 12, the first grooves 12, the rear side of back-up ring 3 before piston 9 is arranged on, back back-up ring 11 is arranged on the rear side of piston 9, and the front side of piston 9 is a rod chamber 13, and the rear side of piston 9 is a rodless cavity 14.
Preceding back-up ring 3 outer second grooves 4 that are provided with, piston 9 comprises reduced diameter section 9-1 and the enlarged diameter section 9-2 that disjunctor is provided with, the reduced diameter section 9-1 of piston 9 is arranged on the front side of enlarged diameter section 9-2, the reduced diameter section 9-1 of piston 9 is provided with the 3rd groove 6 that is connected with second groove 3 outward, the outer slideable seal ring 5 that is nested with of the reduced diameter section 9-1 of piston 9, seal ring 5 is equipped with in cylinder barrel 2, the enlarged diameter section 9-2 of piston 9 goes up the throttle orifice 7 that is connected with the 3rd groove 6 is set, the rear end of the enlarged diameter section 9-2 of piston 9 axially is provided with the tortuous runner 8 that is connected with throttle orifice 7, the rear end of the enlarged diameter section 9-2 of piston 9 radially is provided with the 4th groove 10 that is connected with tortuous runner 8, the 4th groove 10 is arranged on the end of tortuous runner 8 away from throttle orifice 7, the 4th groove 10 is connected with rodless cavity 14, and the external diameter of back back-up ring 11 is less than the internal diameter of cylinder barrel 2.

Claims (1)

1. throttling cushion gas spring, comprise cylinder barrel, place piston rod in the cylinder barrel, the front end of piston rod is arranged on outside the cylinder barrel, and the rear end of piston rod is arranged in the cylinder barrel, the rear end outer radial of piston rod is provided with first groove, piston rod in first groove is nested with front circle, piston and back back-up ring outward, the rear side of back-up ring before piston is arranged on, and back back-up ring is arranged on the rear side of piston, the front side of piston is a rod chamber, and the rear side of piston is a rodless cavity; The back-up ring peripheral hardware is put second groove before described, described piston comprises reduced diameter section and the enlarged diameter section that disjunctor is provided with, the reduced diameter section of piston is arranged on the front side of enlarged diameter section, the reduced diameter section of piston is provided with the 3rd groove that is connected with second groove outward, the outer slideable seal ring that is nested with of the reduced diameter section of piston, seal ring is equipped with in described cylinder barrel, the throttle orifice that is connected with the 3rd groove is set on the enlarged diameter section of piston, the external diameter of described back back-up ring is less than the internal diameter of cylinder barrel, it is characterized in that: the rear end of the enlarged diameter section of described piston axially is provided with the tortuous runner that is connected with throttle orifice, the rear end of the enlarged diameter section of piston radially is provided with the 4th groove that is connected with tortuous runner, the 4th groove is arranged on the end of tortuous runner away from throttle orifice, and the 4th groove is connected with described rodless cavity.
CN 201110135340 2011-05-24 2011-05-24 Throttle buffering gas spring Pending CN102213287A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110135340 CN102213287A (en) 2011-05-24 2011-05-24 Throttle buffering gas spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110135340 CN102213287A (en) 2011-05-24 2011-05-24 Throttle buffering gas spring

Publications (1)

Publication Number Publication Date
CN102213287A true CN102213287A (en) 2011-10-12

Family

ID=44744733

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110135340 Pending CN102213287A (en) 2011-05-24 2011-05-24 Throttle buffering gas spring

Country Status (1)

Country Link
CN (1) CN102213287A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108027006A (en) * 2015-09-14 2018-05-11 Kyb株式会社 Buffer
GB2568456A (en) * 2017-09-27 2019-05-22 Continental Automotive Systems Srl A valve with a serrated edge design in air spring suspension unit

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895229A (en) * 1987-12-28 1990-01-23 Tokico Ltd. Hydraulic shock absorber
EP0481469A2 (en) * 1990-10-19 1992-04-22 Stabilus GmbH Damping apparatus and cylinder piston device equipped with such an apparatus
US20100044173A1 (en) * 2006-10-10 2010-02-25 Niculescu Adiran Loan Self-adjustable shock absorber, with self-correcting damping characteristic, having curved, cylindrical and planar filling valves
CN201475233U (en) * 2009-08-03 2010-05-19 常州昊邦汽车零部件有限公司 Adjustable damper
CN201496465U (en) * 2009-06-30 2010-06-02 隆昌山川精密焊管有限责任公司 Piston used for gas spring
CN201651150U (en) * 2010-02-12 2010-11-24 北京科冠车辆新技术开发有限公司 Hydraulic vibration absorber for high-speed railway vehicle
CN202118176U (en) * 2011-05-24 2012-01-18 扬州市明瑞气弹簧有限公司 Throttling buffer air spring

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895229A (en) * 1987-12-28 1990-01-23 Tokico Ltd. Hydraulic shock absorber
EP0481469A2 (en) * 1990-10-19 1992-04-22 Stabilus GmbH Damping apparatus and cylinder piston device equipped with such an apparatus
US20100044173A1 (en) * 2006-10-10 2010-02-25 Niculescu Adiran Loan Self-adjustable shock absorber, with self-correcting damping characteristic, having curved, cylindrical and planar filling valves
CN201496465U (en) * 2009-06-30 2010-06-02 隆昌山川精密焊管有限责任公司 Piston used for gas spring
CN201475233U (en) * 2009-08-03 2010-05-19 常州昊邦汽车零部件有限公司 Adjustable damper
CN201651150U (en) * 2010-02-12 2010-11-24 北京科冠车辆新技术开发有限公司 Hydraulic vibration absorber for high-speed railway vehicle
CN202118176U (en) * 2011-05-24 2012-01-18 扬州市明瑞气弹簧有限公司 Throttling buffer air spring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108027006A (en) * 2015-09-14 2018-05-11 Kyb株式会社 Buffer
CN108027006B (en) * 2015-09-14 2019-12-13 Kyb株式会社 Buffer device
GB2568456A (en) * 2017-09-27 2019-05-22 Continental Automotive Systems Srl A valve with a serrated edge design in air spring suspension unit
GB2568456B (en) * 2017-09-27 2019-12-18 Continental Automotive Systems Srl A valve with a serrated edge design in air spring suspension unit

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C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
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Application publication date: 20111012