CN202118176U - Throttling buffer air spring - Google Patents

Throttling buffer air spring Download PDF

Info

Publication number
CN202118176U
CN202118176U CN2011201678447U CN201120167844U CN202118176U CN 202118176 U CN202118176 U CN 202118176U CN 2011201678447 U CN2011201678447 U CN 2011201678447U CN 201120167844 U CN201120167844 U CN 201120167844U CN 202118176 U CN202118176 U CN 202118176U
Authority
CN
China
Prior art keywords
piston
groove
diameter
cylinder barrel
ring
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.)
Expired - Fee Related
Application number
CN2011201678447U
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 CN2011201678447U priority Critical patent/CN202118176U/en
Application granted granted Critical
Publication of CN202118176U publication Critical patent/CN202118176U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to the structure of air springs, and provides a throttling buffer air spring, comprising a cylinder barrel. A piston rod penetrates in the cylinder barrel. The rear end of the piston rod is externally and radially provided with a first groove. A front retainer ring and a piston are sleeved to the external of the piston rod 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. The front retainer ring is externally provided with a second groove. The piston has a small-diameter section and a large-diameter section that are integrally arranged. The small-diameter section of the piston is externally provided with a third groove that is communicated with the second groove. A seal ring is slidingly sleeved outside the small-diameter section of the piston. The large-diameter section of the piston is provided with a throttle hole that is communicated with the third groove. 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, and is radially provided with a fourth groove that is communicated with the zigzag flow passage. The fourth groove is provided at one end of the zigzag flow passage far away from the throttle hole. The fourth groove is communicated with the rodless cavity. The throttling buffer air spring of the utility model is capable of buffering gas or oil liquid.

Description

Throttling cushion gas spring
Technical field
The utility model 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 in airtight cylinder barrel, to charge into inert gas or gas mixture; 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 under will refueling the situation of buffering at the terminal, its velocity variations is excessive, jam phenomenon such as creep can appear when serious.
Summary of the invention
The purpose of the utility model is in order to overcome the deficiency of existing technology, the throttling cushion gas spring of a kind of available buffer gas or fluid to be provided.
The purpose of the utility model is achieved in that throttling cushion gas spring, comprises cylinder barrel, places 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, and 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 said; Said piston comprises reduced diameter section and the enlarged diameter section that disjunctor is provided with, and the reduced diameter section of piston is arranged on the front side of enlarged diameter section, and 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 said cylinder barrel, and the throttle orifice that is connected with the 3rd groove is set on the enlarged diameter section of piston, and the external diameter of said back back-up ring is less than the internal diameter of cylinder barrel; The rear end of the enlarged diameter section of said 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, and the 4th groove is arranged on the end of tortuous runner away from throttle orifice, and the 4th groove is connected with said rodless cavity.
The utility model is through above design; Gas or fluid get into the gap between back back-up ring and the cylinder barrel from rodless cavity, get into the 4th groove, get into tortuous runner; Get into 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 need design, and just can play the purpose of good throttling deceleration.When being stretched over the 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 utility model.
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
Like Fig. 1, shown in 2,, comprise cylinder barrel 2 for throttling cushion gas spring; Place piston rod 1 in the cylinder barrel 2, the front end of piston rod 1 is arranged on outside the cylinder barrel 2, and the rear end of piston rod 1 is arranged in the cylinder barrel 2; 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, and the reduced diameter section 9-1 of piston 9 is arranged on the front side of enlarged diameter section 9-2, and 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, and 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, and 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, and 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 comprises cylinder barrel, places 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, and 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 said; Said piston comprises reduced diameter section and the enlarged diameter section that disjunctor is provided with, and the reduced diameter section of piston is arranged on the front side of enlarged diameter section, and 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 said cylinder barrel, and the throttle orifice that is connected with the 3rd groove is set on the enlarged diameter section of piston, and the external diameter of said 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 said 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, and the 4th groove is arranged on the end of tortuous runner away from throttle orifice, and the 4th groove is connected with said rodless cavity.
CN2011201678447U 2011-05-24 2011-05-24 Throttling buffer air spring Expired - Fee Related CN202118176U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201678447U CN202118176U (en) 2011-05-24 2011-05-24 Throttling buffer air spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201678447U CN202118176U (en) 2011-05-24 2011-05-24 Throttling buffer air spring

Publications (1)

Publication Number Publication Date
CN202118176U true CN202118176U (en) 2012-01-18

Family

ID=45459243

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201678447U Expired - Fee Related CN202118176U (en) 2011-05-24 2011-05-24 Throttling buffer air spring

Country Status (1)

Country Link
CN (1) CN202118176U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102213287A (en) * 2011-05-24 2011-10-12 扬州市明瑞气弹簧有限公司 Throttle buffering gas spring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102213287A (en) * 2011-05-24 2011-10-12 扬州市明瑞气弹簧有限公司 Throttle buffering gas spring

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: JIANGSU MINGRUI GAS SPRING CO., LTD.

Assignor: Jiangdu Mingrui Gas Spring Manufacturing Co.,Ltd.

Contract record no.: 2014320000601

Denomination of utility model: Throttle buffering gas spring

Granted publication date: 20120118

License type: Exclusive License

Record date: 20140722

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120118

Termination date: 20170524