CN108644289B - Double-cylinder oil damping shock absorber for automobile - Google Patents
Double-cylinder oil damping shock absorber for automobile Download PDFInfo
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- CN108644289B CN108644289B CN201810824094.2A CN201810824094A CN108644289B CN 108644289 B CN108644289 B CN 108644289B CN 201810824094 A CN201810824094 A CN 201810824094A CN 108644289 B CN108644289 B CN 108644289B
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- damping
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- piston rod
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
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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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3415—Special valve constructions; Shape or construction of throttling passages characterised by comprising plastics, elastomeric or porous elements
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a double-cylinder oil damping shock absorber for an automobile, which comprises a fixed seat, a piston rod, a piston head, a working cylinder, an anti-collision cylinder barrel, annular damping plates, a damping spring and a mounting end sealing cover, and is characterized in that the fixed seat is connected with one end of the piston rod, the bottom end of the piston rod penetrates through a middle shaft hole of an integrated oil seal seat and then is arranged in an oil storage cavity in the working cylinder, a plurality of annular damping plates are arranged in the oil storage cavity below the piston head, damping holes are formed in the annular damping plates, and the damping spring is sleeved outside the anti-collision cylinder barrel; when the annular damping plates are impacted or extruded by the piston head, the annular damping plates deform along the direction of the damping holes, the staggered damping holes deform under stress, the adjacent annular damping plates are in contact with each other and prevent the damping holes from being communicated with each other, the closed damping holes prevent oil from flowing and form damping force, the motion of the piston head is favorably slowed down, effective damping shock absorption is formed, and shock absorption operation is realized together by matching with a damping spring.
Description
Technical Field
The invention relates to a shock absorber, in particular to a double-cylinder oil damping shock absorber for an automobile.
Background
The main function of the shock absorber is to alleviate and attenuate the vibration and impact encountered by the vehicle in the driving process, ensure the comfort, stability and safety of the rider, and further improve the stability and service life of the vehicle.
The magnitude of the damping force inside the shock absorber currently used in vehicles is determined at the beginning of the design, so that the damping force of the shock absorber is not adjustable. The shock absorber for the automobile generally comprises a damper, a shock absorbing spring and a connecting piece, and has the functions of relieving the vibration of the automobile body, improving the driving comfort, transmitting various reaction forces, improving the wheel grounding performance and improving the driving safety. The damper has the functions of relaxing the vibration of the damping spring and weakening the vibration wave of the damping spring, the damper oil storage cylinder is divided into two working cavities which are communicated by the working cylinder, namely an oil storage cylinder inner cavity and a working cylinder inner cavity, the working cylinder inner cavity is filled with oil, one part of the space of the oil storage cylinder inner cavity is filled with the oil, the other part of the space of the oil storage cylinder inner cavity is air, and the two oil cavities are communicated through a small hole in the bottom valve. The piston assembly reciprocates up and down, part of oil in the working cylinder cavity enters the lower cavity of the piston through the small hole of the piston assembly, and the oil discharged by the piston assembly into the working cylinder cavity flows to the inner cavity of the oil storage cylinder through the small hole in the bottom valve, and the compression damping force is generated by throttling of the small hole; the piston assembly moves downwards, oil in the lower cavity of the piston enters the upper cavity of the piston through the small hole of the piston, the restoring damping force is generated by throttling through the small hole of the piston, and the oil in the inner cavity of the working cylinder is sucked into the oil supplementing cylinder through the bottom valve due to the empty space formed by the downward movement of the piston assembly, so that the preparation is made for the next work.
However, the existing shock absorber is poor in damping effect due to the fact that essential choke components are not needed when oil liquid in the shock absorber flows except that the internal damping force is not adjustable, and the shock absorber cannot be effectively matched with a damping spring to achieve shock absorption operation of an automobile together.
Disclosure of Invention
In view of the defects in the prior art, the present invention aims to provide a dual-cylinder oil damping shock absorber for an automobile, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a double-cylinder oil damping shock absorber for an automobile comprises a fixed seat, a piston rod, a piston head, a working cylinder, an anti-collision cylinder barrel, annular damping plates, a damping spring and an installation end sealing cover, wherein the fixed seat is connected with one end of the piston rod, the bottom end of the piston rod penetrates through a middle shaft hole of an integrated oil seal seat and then is arranged in an oil storage inner cavity in the working cylinder, the bottom end of the piston rod is connected with the piston head through a lock nut II, a plurality of annular damping plates are arranged in the oil storage inner cavity below the piston head, damping holes are formed in the annular damping plates, an anti-collision cylinder barrel is arranged outside the working cylinder, the upper end of the anti-collision cylinder barrel is arranged as a cylinder barrel fixing section, the cylinder barrel fixing section and the top end of the working cylinder are embedded into an end sealing boss of the integrated oil seal seat and are fixedly connected with the integrated oil seal seat, the damping spring is sleeved outside the anti-collision cylinder barrel, and the bottom ends of the working cylinder barrel are connected with the installation end sealing cover, the mounting end sealing cover is connected with the working cylinder and the anti-collision cylinder barrel through bolts, an oil sealing plate is mounted in an oil storage inner cavity at the bottom end of the working cylinder, and the oil sealing plate is fixedly connected with the working cylinder through a bolt rod.
As a further scheme of the invention, an inner bushing is fixed in the middle of the bottom end of the fixing seat, the inner portion of the inner bushing is in threaded connection with one end of a piston rod, a first locking nut is arranged on the piston rod, and the first locking nut is in threaded connection with the inner bushing of the fixing seat.
As a further scheme of the invention, a first locking nut is arranged on the piston rod and is in threaded connection with an inner bushing of the fixed seat.
As a further scheme of the invention, an anti-collision damping block is fixed at the top of the piston rod and is a rubber block.
As a further scheme of the invention, the annular damping plate is formed by molding polytetrafluoroethylene materials, and damping holes in the annular damping plate are through holes which are arranged in a staggered mode.
As a further scheme of the invention, a spring inner cavity is formed in the damping spring, the diameter of the spring inner cavity is larger than the outer diameter of the anti-collision cylinder barrel, the top end of the damping spring is fixed in a spring assembling groove at the bottom side of the fixed seat, and the bottom end of the damping spring is fixed on a spring fixing plate welded on the outer wall of the anti-collision cylinder barrel.
As a further scheme of the invention, corresponding screw holes are formed in the mounting end sealing cover, the working cylinder and the anti-collision cylinder barrel, the screw holes are internally connected with bolt rods in a threaded manner, and bolt heads are fixed at the outer ends of the bolt rods and are hexagon socket head bolt heads.
As a further scheme of the invention, the top end of the bolt rod is screwed into a blind hole in the side face of the oil seal plate, and a jacking spring is arranged in the blind hole.
As a further scheme of the invention, the middle part of the working cylinder is provided with an oil passing hole communicated with the oil storage inner cavity, the oil passing hole is communicated with a flow guide channel, and the flow guide channel is communicated with an oil injection nozzle.
In conclusion, compared with the prior art, the invention has the following beneficial effects:
this open-open double-cylinder fluid damping shock absorber for car, the structure is firm, shock attenuation is effectual, when annular damping plate receives piston head striking or extrusion, annular damping plate takes place deformation along the damping hole direction, crisscross damping hole atress deformation that sets up and adjacent annular damping plate want to contact and prevent mutual damping hole intercommunication, the confined damping hole prevents fluid flow and forms the damping force, be favorable to slowing down the motion of piston head, thereby form effectual damping shock attenuation, do benefit to piston head damping shock attenuation, and cooperate damping spring to realize shock attenuation operation together.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the oil seal plate of the present invention.
FIG. 3 is a schematic structural view of the annular damping plate of the present invention.
Reference numerals: 1-a fixed seat, 2-an inner bushing, 3-a first locking nut, 4-a spring assembly groove, 5-an anti-collision shock absorption block, 6-a spring inner cavity, 7-a piston rod, 8-an integrated oil seal seat, 9-an end seal boss, 10-a cylinder barrel fixed section, 11-a second locking nut, 12-a piston head, 13-a working cylinder, 14-an anti-collision cylinder barrel, 15-an oil storage inner cavity, 16-an annular damping plate, 17-a shock absorption spring, 18-a spring fixed plate, 19-an oil seal plate, 20-an oil passing hole, 21-a bolt head, 22-a bolt rod, 23-a screw hole, 24-a puller spring, 25-a flow guide channel, 26-an oil injection nozzle, 27-an installation end seal cover and 28-a damping hole.
Detailed Description
The technical solution of the present invention is further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-3, a double-cylinder oil damping shock absorber for an automobile comprises a fixed seat 1, a piston rod 7, a piston head 12, a working cylinder 13, a crash cylinder 14, an annular damping plate 16, a damping spring 17 and a mounting end sealing cover 27, wherein an inner bushing 2 is fixed in the middle of the bottom end of the fixed seat 1, the inner portion of the inner bushing 2 is in threaded connection with one end of the piston rod 7, a locking nut I3 is arranged on the piston rod 7, and the locking nut I3 is in threaded connection with the inner bushing 2 of the fixed seat 1 to fixedly connect the piston rod 7 with the fixed seat 1; the top of the piston rod 7 is fixed with an anti-collision damping block 5, the anti-collision damping block 5 is preferably a rubber block, the bottom end of the piston rod 7 passes through a shaft hole in the middle of the integrated oil seal seat 8 and then is arranged in an oil storage cavity 15 in the working cylinder 13, the bottom end of the piston rod 7 is connected with the piston head 12 through a lock nut II 11, a plurality of annular damping plates 16 are arranged in the oil storage cavity 15 below the piston head 12, the annular damping plates 16 are molded by polytetrafluoroethylene materials, the anti-collision damping plate has good wear resistance and long service life, and can effectively slow down the piston head 12 from moving downwards in the working cylinder 13 to extrude oil in the oil storage cavity 15, the annular damping plates 16 are provided with damping holes 28, the damping holes 28 are through holes which are arranged in a staggered manner, when the annular damping plates 16 are impacted or extruded by the piston head 12, the annular damping plates 16 deform along the direction of the damping holes 28 which are arranged in a staggered manner, and adjacent annular damping plates 16 want to contact and prevent the damping holes 28 from being communicated with each other, the closed orifice 28 prevents the flow of oil and creates a damping force that helps slow the motion of the piston head 12, thereby creating an effective damping cushion.
The outside of working cylinder 13 is equipped with crashproof cylinder 14, and 14 upper ends of crashproof cylinder are established to cylinder canned paragraph 10, and all imbeds in the end seal boss 9 of integral type oil seal seat 8 and with integral type oil seal seat 8 fixed connection on cylinder canned paragraph 10 and 13 tops of working cylinder, 14 outside covers of crashproof cylinder are equipped with damping spring 17, and the inside spring inner chamber 6 that forms of damping spring 17, the diameter of spring inner chamber 6 are greater than crashproof cylinder 14's external diameter, and the spring assembly groove 4 at 1 bottom side of fixing base is fixed on the spring mounting plate 18 of the outer wall welded of crashproof cylinder 14 on damping spring 17 bottom.
The bottom ends of the working cylinder 13 and the anti-collision cylinder barrel 14 are connected with a mounting end sealing cover 27, the mounting end sealing cover 27 is connected with the working cylinder 13 and the anti-collision cylinder barrel 14 through bolts, corresponding screw holes 23 are formed in the mounting end sealing cover 27, the working cylinder 13 and the anti-collision cylinder barrel 14, the screw holes 23 are connected with the bolt rods 22 in a threaded mode, the outer ends of the bolt rods 22 are fixed with bolt heads 21, the bolt heads 21 are hexagon socket head bolt heads, the top ends of the bolt rods 22 are screwed into blind holes in the side face of the oil seal plate 19, and tightening springs 24 are arranged in the blind holes.
The oil seal plate 19 is installed in the oil storage inner cavity 15 at the bottom end of the working cylinder 13 and is connected and fixed with the working cylinder 13 through a bolt rod 22, the middle of the working cylinder 13 is provided with an oil passing hole 20 communicated with the oil storage inner cavity 15, the oil passing hole 20 is communicated with the flow guide channel 25, the flow guide channel 25 is communicated with the oil filling nozzle 26, oil is filled into the oil storage inner cavity 15 in advance through the oil filling nozzle 26, damping of the piston head 12 is facilitated, and damping operation is achieved through cooperation of the damping spring 17.
The technical principle of the present invention has been described above with reference to specific embodiments, which are merely preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. Those skilled in the art will be able to conceive of other embodiments of the invention without the exercise of inventive faculty, which fall within the scope of protection of the invention.
Claims (8)
1. A double-cylinder oil damping shock absorber for an automobile comprises a fixed seat (1), a piston rod (7), a piston head (12), a working cylinder (13), an anti-collision cylinder barrel (14), annular damping plates (16), a damping spring (17) and a mounting end sealing cover (27), and is characterized in that the fixed seat (1) is connected with one end of the piston rod (7), the bottom end of the piston rod (7) penetrates through a middle shaft hole of an integrated oil sealing seat (8) and then is arranged in an oil storage inner cavity (15) inside the working cylinder (13), the bottom end of the piston rod (7) is connected with the piston head (12) through a locking nut II (11), a plurality of annular damping plates (16) are arranged in the oil storage inner cavity (15) below the piston head (12), damping holes (28) are formed in the annular damping plates (16), the anti-collision cylinder barrel (14) is arranged outside the working cylinder (13), and the upper end of the anti-collision cylinder barrel (14) is arranged as a cylinder barrel fixing section (10), the oil cylinder fixing section (10) and the top end of the working cylinder (13) are embedded into an end sealing boss (9) of the integrated oil seal seat (8) and fixedly connected with the integrated oil seal seat (8), a damping spring (17) is sleeved outside the anti-collision cylinder (14), the bottom ends of the working cylinder (13) and the anti-collision cylinder (14) are connected with an installation end sealing cover (27), the installation end sealing cover (27) is connected with the working cylinder (13) and the anti-collision cylinder (14) through bolts, an oil sealing plate (19) is installed in an oil storage inner cavity (15) at the bottom end of the working cylinder (13), the oil sealing plate (19) is fixedly connected with the working cylinder (13) through a bolt rod (22), the annular damping plate (16) is formed by molding a polytetrafluoroethylene material, and damping holes (28) in the annular damping plate are through holes which are arranged in a staggered mode.
2. The double-cylinder oil damping shock absorber for the automobile as claimed in claim 1, wherein an inner bushing (2) is fixed to the middle of the bottom end of the fixing seat (1), the inner portion of the inner bushing (2) is in threaded connection with one end of a piston rod (7), a first locking nut (3) is arranged on the piston rod (7), and the first locking nut (3) is in threaded connection with the inner bushing (2) of the fixing seat (1).
3. The dual-cylinder oil damping shock absorber for the automobile as claimed in claim 2, wherein the piston rod (7) is provided with a lock nut (3), and the lock nut (3) is in threaded connection with the inner bushing (2) of the fixing seat (1).
4. The dual-cylinder oil damping shock absorber for the automobile as claimed in claim 1 or 2, wherein a crash cushion block (5) is fixed on the top of the piston rod (7), and the crash cushion block (5) is a rubber block.
5. The double-cylinder oil damping shock absorber for the automobile as claimed in claim 1, wherein the damping spring (17) is internally provided with a spring cavity (6), the diameter of the spring cavity (6) is larger than the outer diameter of the crash cylinder (14), the top end of the damping spring (17) is fixed in a spring assembly groove (4) at the bottom side of the fixed seat (1), and the bottom end of the damping spring (17) is fixed on a spring fixing plate (18) welded on the outer wall of the crash cylinder (14).
6. The double-cylinder oil damping shock absorber for the automobile as claimed in claim 1, wherein the mounting end cover (27), the working cylinder (13) and the crash cylinder (14) are provided with corresponding screw holes (23), the screw holes (23) are connected with a bolt rod (22) in a threaded manner, a bolt head (21) is fixed at the outer end of the bolt rod (22), and the bolt head (21) is a hexagon socket head bolt head.
7. The double-cylinder oil damping shock absorber for the automobile as claimed in claim 6, wherein the top end of the bolt rod (22) is screwed into a blind hole in the side surface of the oil sealing plate (19), and a jacking spring (24) is arranged in the blind hole.
8. The double-cylinder oil damping shock absorber for the automobile as recited in claim 7, wherein the middle of the working cylinder (13) is provided with an oil through hole (20) communicated with the oil storage cavity (15), the oil through hole (20) is communicated with the flow guide channel (25), and the flow guide channel (25) is communicated with the oil filling nozzle (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824094.2A CN108644289B (en) | 2018-07-25 | 2018-07-25 | Double-cylinder oil damping shock absorber for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824094.2A CN108644289B (en) | 2018-07-25 | 2018-07-25 | Double-cylinder oil damping shock absorber for automobile |
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| Publication Number | Publication Date |
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| CN108644289A CN108644289A (en) | 2018-10-12 |
| CN108644289B true CN108644289B (en) | 2022-07-08 |
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| CN201810824094.2A Active CN108644289B (en) | 2018-07-25 | 2018-07-25 | Double-cylinder oil damping shock absorber for automobile |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372936B (en) * | 2018-11-18 | 2020-05-12 | 乐清海创智能科技有限公司 | Double-cylinder high-pressure magneto-rheological damper |
| CN110005746B (en) * | 2019-04-18 | 2020-12-15 | 嘉兴宸轩管件制造科技有限公司 | Hydraulic connecting plate of automobile shock absorber |
| CN112727984B (en) * | 2020-12-24 | 2022-11-08 | 临海市鹿城机车部件有限公司 | Vehicle damping device |
| CN114017415A (en) * | 2021-11-02 | 2022-02-08 | 陈金祥 | Hydraulic oil cylinder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205089876U (en) * | 2015-06-23 | 2016-03-16 | 李华良 | Shock absorber for automobile |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950005138B1 (en) * | 1992-05-16 | 1995-05-18 | 이종찬 | Damper assembly |
| JP2007303644A (en) * | 2006-05-15 | 2007-11-22 | Ntn Corp | Hydraulic automatic tensioner |
| CN202001543U (en) * | 2011-03-29 | 2011-10-05 | 重庆小康汽车集团有限公司 | Double-cylinder oil-gas separating type damping shock absorber |
| CN202140498U (en) * | 2011-06-22 | 2012-02-08 | 天津市泓锋泰汽车改装有限公司 | Automobile shock absorber |
| CN202833820U (en) * | 2012-07-30 | 2013-03-27 | 天津市广德机械设备制造有限公司 | Automotive shock absorber |
| CN203384276U (en) * | 2013-06-04 | 2014-01-08 | 吴绍富 | Automobile shock absorber |
| CN205047730U (en) * | 2015-10-22 | 2016-02-24 | 福建省晋江市东石耐特克机械有限公司 | Binocular hydraulic pressure rear damper |
| CN205639448U (en) * | 2016-05-16 | 2016-10-12 | 温州江硕车业股份有限公司 | Novel motorcycle front shock absorber |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205089876U (en) * | 2015-06-23 | 2016-03-16 | 李华良 | Shock absorber for automobile |
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Effective date of registration: 20220622 Address after: 400000 7 Shangke Road, plot 65, Airport Industrial Park, Yubei District, Chongqing Applicant after: CHONGQING HENGWEILIN AUTOMOTIVE PARTS CO.,LTD. Address before: 311800 Dian Kou community, Dian Kou Town, Zhuji City, Shaoxing, Zhejiang Applicant before: Wu Jiafeng |
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