CN106641080A - Hydraulic type changeable damping shock absorber with electricity generating function - Google Patents

Hydraulic type changeable damping shock absorber with electricity generating function Download PDF

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Publication number
CN106641080A
CN106641080A CN201611137082.XA CN201611137082A CN106641080A CN 106641080 A CN106641080 A CN 106641080A CN 201611137082 A CN201611137082 A CN 201611137082A CN 106641080 A CN106641080 A CN 106641080A
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CN
China
Prior art keywords
piston
electric machine
shock absorber
brushless electric
generating function
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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.)
Granted
Application number
CN201611137082.XA
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Chinese (zh)
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CN106641080B (en
Inventor
兰志强
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.)
ZHEJIANG JINBO SHOCK ABSORBER MANUFACTURING CO LTD
Original Assignee
Best Precision Technology (suzhou) Co Ltd
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Priority to CN201611137082.XA priority Critical patent/CN106641080B/en
Publication of CN106641080A publication Critical patent/CN106641080A/en
Application granted granted Critical
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/50Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10Springs, 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
    • F16F9/14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16Devices 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
    • F16F9/18Devices 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 with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/19Devices 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 with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • F16F9/3214Constructional features of pistons

Abstract

The invention discloses a hydraulic type changeable damping shock absorber with an electricity generating function. The hydraulic type changeable damping shock absorber with the electricity generating function is used for vehicle shock absorption. The main improvement of the fluid pressure type changeable damping shock absorber is that a shock absorber shell is designed to be a sealed shell body, the inner part of the fluid pressure type changeable damping shock absorber is filled with working oil, a shock absorber piston is designed to be a rotational piston and comprises a piston shell, a brushless electric machine and a star type gear reducing mechanism, the brushless electric machine and the star type gear reducing mechanism are arranged inside the piston shell, the piston shell comprises a fixed brushless electric machine, a piston upper cover of a shock absorber rod, and a piston rotating sleeve which is rotationally connected to the outer wall of the brushless electric machine through a bearing, the outer wall of the piston rotating sleeve is provided with spiral threads, the inner wall of the piston rotating sleeve is provided with an annular gear, the output shaft of the brushless electric machine is in transmission connection with the annular gear through the star type gear reducing mechanism, an outgoing line of the output shaft of the brushless electric machine is connected to a vehicle controller at the same time, the rotating piston divides the sealed shell body into an upper oil chamber and a lower oil chamber, and the rotating piston can change the volumes of the upper and lower oil chambers through self-rotation so as to drive the lifting of itself. According to the hydraulic type changeable damping shock absorber with the electricity generating function, electromagnetic liquid is not used, the structure is simple, the maintenance is convenient, the use and maintenance costs are low, and the hydraulic type changeable damping shock absorber with the electricity generating function can generate electric energy in a specified controlled environment.

Description

A kind of fluid pressure type variable-damp vibration damper with generating function
Technical field
The present invention relates to a kind of fluid pressure type variable-damp vibration damper with generating function, belongs to the structure of automobile absorber Technical field.
Background technology
Using a kind of special liquid for being referred to as electromagnetic liquid in magnetorheological damping damper, damper, it is hydrocarbon by synthesizing The magnetic-particle composition of compound and 3 to 10 microns of sizes.Once control unit sends pulse signal, will produce in coil Voltage, so as to form a magnetic field, and changes the arrangement mode of particle.These particles can be arranged by the direction perpendicular to pressure at once Row, the effect for hindering oil to flow in piston channel, so as to improve damped coefficient.
This damper device internal structure is complicated;It is expensive using special electromagnetic liquid;In order to produce a certain damping effect Really, the size of real-time control electric current is needed, power consumption is big.
The content of the invention
The present invention seeks to:A kind of fluid pressure type variable-damp vibration damper with generating function is provided, it does not use electromagnetism Liquid, simple structure is easy to maintenance, operation and maintenance low cost, and can produce electric energy under specified control environment.
The technical scheme is that:A kind of fluid pressure type variable-damp vibration damper with generating function, subtracts for vehicle Shake, including damper shell, the shock absorber piston located at damper inside the shell and be connected with shock absorber piston and stretch out damper The absorber rod of shell, it is characterised in that the damper shell is a kind of closed shell, and it is internal full of work fluid, and subtracts Shake device piston is that one kind rotates piston, including piston and the brushless electric machine in piston and star gear train reductor Structure, the piston include on the piston for fixing brushless electric machine and absorber rod cover, and with brushless electric machine outer wall by Bearing rotates the piston rotation set of connection, and the outer wall of the piston rotation set is provided with spiral lamination, and inwall then arranges ring gear;It is described The output shaft of brushless electric machine is connected with the centre pinion of star gear train reducing gear, and the peripheral planet of star gear train reducing gear Gear is engaged with the ring gear, and the lead-out wire of brushless electric machine is connected with vehicle control device;The piston that rotates is by closed shell Upper and lower two grease chambers are separated into, the rotation piston can change upper and lower grease chamber volume and itself live up and down to drive by rotation It is dynamic.
Further, the preferred anti-icing fluid of heretofore described work fluid.
Further, the perforate passed through for absorber rod is provided with the top of heretofore described closed shell, is set in perforate There is damper body seal circle.
Further, heretofore described absorber rod is hollow member, and the lead-out wire of the brushless electric machine subtracts from described Draw and be connected with the vehicle control device in shake device bar inside.Actual lead-out wire includes brushless electric machine supply line(Power supply Line), brushless electric machine is used as lead line during generator, and the control circuit of brushless electric machine and Vehicle Controller.
Further, the preferred rolling bearing of heretofore described bearing.
Further, heretofore described piston also include with piston rotation cover bottom fix or Integral design work Plug lower cover, is provided with some rolling steel balls between the piston lower cover and the planetary gear, the setting of rolling steel ball can be improved Fluency during mechanism driving.
Further, lid and piston rotation are enclosed within junction and are provided with piston packing on heretofore described piston, prevent Only fluid invades internal piston destruction brushless electric machine.
The operation principle of the present invention is as follows:When absorber rod be subject to external force drive rotate piston in work fluid downwards or When person moves upwards, piston can all extrude lower oil chamber, change the pressure balanced environment of damper enclosure so that working oil Spiral lamination surface outside liquid impact piston turning set, to rotating piston tangential driving force is applied, and is ordered about piston rotation set and is turned It is dynamic.The planetary gear motion of inside will be driven when piston rotation is rotated, and then is rotated by these gear driven centre pinions, So that brushless electric machine gets into smooth, and because using star gear train reducing gear, piston rotation set moves small distance, all Can be exaggerated so that brushless electric machine gets up to be generated electricity with higher rotational speed.
Here brushless electric machine has two kinds of working conditions:
Rotate:When brushless electric machine is rotated under driven by power, rotation piston can be driven(Piston rotation set)Rotate together.And turn The rotation of piston can change upper and lower grease chamber volume, break damper enclosure pressure balance, so as to drive rotation piston It is up and down.Therefore, when needing absorber rod to move up and down, it is only necessary to which the rotating for adjusting brushless electric machine can be achieved with damping The up and down motion of device bar.And the speed of absorber rod up and down motion speed can pass through control brushless motor speed raising or Reduce realizing.
Generate electricity:It can be seen from principle Analysis above, brushless electric machine is subject to external force in absorber rod(Vehicle body is with operation And shake)Generation electric energy can be rotated during effect, and rotating speed is faster, the electric energy of generation is more.And brushless electric machine rotate speed with The time of the external force effect that absorber rod is subject to and distance dependent, its electric energy for producing can be stored or supplied by control circuit To the electrical equipment on car.
The implementation method of mutative damp, according to the design, mutative damp is to require in the case of a certain external force, by damping The speed of device bar up and down motion speed come determine damp size.In the case of external force identical, absorber rod upwards or to The speed of lower motion is fast, is that damped coefficient is little;The speed that absorber rod is upwardly or downwardly moved is slow, is damped coefficient Greatly.Therefore it may only be necessary to change the size of damper damping by changing the rotating speed of brushless electric machine.Understand principles above, so that it may To know the method that the design can have two kinds of mutative damps.
One kind be brushless electric machine under as TRT, by change load(For example the electric energy of generation is used to charge, Only need to adjust the size of charging current, charging current increase, load becomes big, and damping becomes big, and charging current reduces, and load subtracts It is little, deattenuation)Size, thus it is possible to vary damping;Another method is brushless electric machine in the case where control is driven, Change damping by changing the speed of the brushless electric machine direction of motion or rotating speed(Size and force direction).
Certainly the lift angle and pitch gap for needing the screw thread of explanation transfer piston case surface of the present invention determines damper Inherent damping, lead angle and pitch is big, damps little;It is contrary, lead angle and pitch it is little, damping is big.
It is an advantage of the invention that:
1st, this damper that the present invention is provided, it realizes principle not compared with the MR vibration damper of electromagnetic liquid is routinely used Together, it is not necessary to which special electromagnetism liquid medium, internal structure is simpler, design ingenious, it is maintainable strong;Simultaneously production cost drops It is low, and can save enterprise's production capacity without the need for a direct power supply when using.
2nd, this damper that the present invention is provided, it can produce electric energy in the case where need not greatly damp work, lead to Electrical equipment in power storage or supply car can be user's save energy by oversampling circuit control.
3rd, this damper that the present invention is provided, it is further mounted with encoder on brushless electric machine, for inspection indirectly Survey bodywork height, simplify the structure of script, can save space, improve product compatibility.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Fig. 1 is the structural main section view of the present invention;
Fig. 2 is the structural main section view for rotating piston;
Fig. 3 is the A-A profiles of Fig. 2.
Wherein:1st, damper shell;1a, upper chamber;1b, lower oil chamber;2nd, shock absorber piston;3rd, absorber rod;4th, it is brushless Motor;4a, output shaft;5th, cover on piston;6th, bearing;7th, piston rotation set;7a, spiral lamination;7b, ring gear;8th, centre pinion; 9th, planetary gear;10th, lead-out wire;11st, perforate;12nd, damper body seal circle;13rd, piston lower cover;14th, rolling steel ball;15、 Piston packing.
Specific embodiment
Embodiment:With reference to shown in Fig. 1 ~ Fig. 3, this fluid pressure type adaptive damping with generating function that the present invention is provided Damper, explains as follows:It is used for vehicle damping, with damper shell 1, the damper in damper shell 1 Piston 2 and the absorber rod 3 being connected with shock absorber piston 2.
The emphasis of the present invention is improved by damper shell 1 and shock absorber piston 2.Wherein damper shell 1 be by upper lid, The closed shell that middle cylinder and lower cover are fixed, it is internal full of work fluid, i.e. anti-icing fluid;And shock absorber piston 2 is One kind rotates piston, and this rotation piston includes that piston and brushless electric machine 4 and star gear train in piston subtract Fast mechanism, the piston is by for fixing lid 5 and the outer wall of brushless electric machine 4 on the piston of brushless electric machine 4 and absorber rod 3 By bearing 6(Rolling bearing)Rotate the piston rotation set 7 of connection and cover under the piston that 7 bottoms are fixed with the piston rotation Lid 13 is collectively formed, specifically as shown in Figure 2.
The outer wall of the piston rotation set 7 is provided with spiral lamination 7a, and inwall then arranges ring gear 7b.Star described in the present embodiment Type gear reduction is engaged and around three planetary gears 9 of its uniform intervals distribution by centre pinion 8 and with centre pinion 8 Collectively form.The output shaft 4a of the brushless electric machine 4 is connected with the centre pinion 8 of star gear train reducing gear, and star gear train The planetary gear 9 of reducing gear periphery is engaged with the ring gear 7b, is specifically combined shown in Fig. 3.
It will be seen from figure 1 that closed shell is separated into upper and lower two grease chambers 1a, 1b by heretofore described rotation piston, The rotation piston can change upper and lower grease chamber 1a, 1b volume to drive itself up and down by rotation.
Damper shell described in the present embodiment 1(Closed shell)Top(Upper lid)It is provided with what is passed through for absorber rod 3 Damper body seal circle 12 is provided with perforate 11, perforate 11, prevents dust and aqueous vapor from entering inside damper shell 1, it is ensured that Its seal.
Absorber rod 3 described in the present embodiment is hollow member, and the lead-out wire 10 of the brushless electric machine 4 is from the damper The inside of bar 3 is drawn and is connected with the vehicle control device, as shown in Figure 1.Actual lead-out wire includes brushless electric machine supply line (Power line), brushless electric machine 4 is used as lead line during generator, and the control circuit of brushless electric machine 4 and Vehicle Controller.
As shown in Fig. 2 being provided with some rolling steel between piston lower cover described in the present embodiment 13 and the planetary gear 9 Pearl 14, the setting of rolling steel ball 14 can improve fluency during mechanism driving.
Lid 5 and piston rotation set 7 are provided with piston packing 15 in junction on piston described in the present embodiment, prevent oil Liquid invades internal piston destruction brushless electric machine 4.
The operation principle of the present invention is as follows:When absorber rod 3 is subject to external force to drive rotation piston downward in work fluid Or when moving upwards, piston can all extrude upper and lower grease chamber 1a, 1b, change the pressure balanced environment inside damper shell 1, So that the spiral lamination 7a surface outside work fluid impact piston turning set 7, to rotating piston tangential driving force is applied, order about Piston rotation set 7 is rotated.The planetary gear 9 that inside will be driven when piston rotation is rotated is moved, and then by these gear bands Dynamic centre pinion 8 is rotated, so that brushless electric machine 4 gets into smooth, and due to using star gear train reducing gear, piston rotation set The small distance of 7 motions, all can be exaggerated so that brushless electric machine 4 gets up to be generated electricity with higher rotational speed.
Here brushless electric machine has two kinds of working conditions:
Rotate:When brushless electric machine 4 is rotated under driven by power, rotation piston can be driven(Piston rotation set 7)Rotate together.And Rotating the rotation of piston can change upper and lower grease chamber 1a, 1b volume, break damper enclosure pressure balance, so as to drive Rotate piston up and down.Therefore, when needing absorber rod 3 to move up and down, it is only necessary to adjust the rotating of brushless electric machine 4 just The up and down motion of absorber rod 3 can be realized.And the speed of the up and down motion speed of absorber rod 3 can be by controlling brushless electric machine 4 The raising of rotating speed reduces realizing.
Generate electricity:It can be seen from principle Analysis above, brushless electric machine 4 is subject to external force in absorber rod 3(Vehicle body is with fortune Go and shake)Generation electric energy can be rotated during effect, and rotating speed is faster, the electric energy of generation is more.And the speed that brushless electric machine 4 is rotated The time of the external force effect being subject to absorber rod 3 and distance dependent, its electric energy for producing can be stored by control circuit or Electrical equipment on person's supply car.
The implementation method of mutative damp, according to the design, mutative damp is to require in the case of a certain external force, by damping The speed of the up and down motion speed of device bar 3 come determine damp size.In the case of external force identical, absorber rod 3 upwards or The speed for moving downward is fast, is that damped coefficient is little;The speed that absorber rod 3 is upwardly or downwardly moved is slow, is damping system Number is big.Therefore it may only be necessary to change the size of damper damping by changing the rotating speed of brushless electric machine 4.Principles above is understood, just It is known that the method that the design can have two kinds of mutative damps.
One kind be brushless electric machine 4 under as TRT, by change load(For example the electric energy of generation is used to fill Electricity, it is only necessary to adjust the size of charging current, charging current increase, load becomes big, and damping becomes big, and charging current reduces, load Reduce, deattenuation)Size, thus it is possible to vary damping;Another method is that brushless electric machine 4 is being driven the situation of control Under, change damping by changing the speed of the direction of motion of brushless electric machine 4 or rotating speed(Size and force direction).
Certainly above-described embodiment technology design only to illustrate the invention and feature, its object is to allow and are familiar with technique People will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.It is all according to this The modification that the Spirit Essence of bright main technical schemes is done, all should be included within the scope of the present invention.

Claims (7)

1. a kind of fluid pressure type variable-damp vibration damper with generating function, for vehicle damping, including damper shell(1)、 Located at damper shell(1)Interior shock absorber piston(2)And with shock absorber piston(2)It is connected and stretches out damper shell(1)'s Absorber rod(3), it is characterised in that the damper shell(1)For a kind of closed shell, it is internal full of work fluid, and subtracts Shake device piston(2)It is that one kind rotates piston, including piston and the brushless electric machine in piston(4)And star gear train Reducing gear, the piston is included for fixing brushless electric machine(4)And absorber rod(3)Piston on cover(5), and with nothing Brush motor(4)Outer wall is by bearing(6)Rotate the piston rotation set of connection(7), the piston rotation set(7)Outer wall be provided with spiral shell Lira(7a), inwall then arranges ring gear(7b);The brushless electric machine(4)Output shaft(4a)With star gear train reducing gear Centre pinion(8)It is connected, and the peripheral planetary gear of star gear train reducing gear(9)With the ring gear(7b)Engagement, it is brushless Motor(4)Lead-out wire(10)It is connected with vehicle control device;Closed shell is separated into upper and lower two grease chambers by the rotation piston (1a、1b), the rotation piston can be by the upper and lower grease chamber of rotation change(1a、1b)Volume is driving itself up and down.
2. a kind of fluid pressure type variable-damp vibration damper with generating function according to claim 1, it is characterised in that institute Work fluid is stated for anti-icing fluid.
3. a kind of fluid pressure type variable-damp vibration damper with generating function according to claim 1, it is characterised in that institute State to be provided with the top of closed shell and supply absorber rod(3)The perforate for passing through(11), perforate(11)Inside it is provided with damper body seal Circle(12).
4. a kind of fluid pressure type variable-damp vibration damper with generating function according to claim 1, it is characterised in that institute State absorber rod(3)For hollow member, the brushless electric machine(4)Lead-out wire(10)From the absorber rod(3)Draw inside And be connected with the vehicle control device.
5. a kind of fluid pressure type variable-damp vibration damper with generating function according to claim 1, it is characterised in that institute State bearing(6)For rolling bearing.
6. a kind of fluid pressure type variable-damp vibration damper with generating function according to claim 1, it is characterised in that institute Stating piston also includes and piston rotation set(7)Bottom fix or Integral design piston lower cover(13), the piston lower cover (13)With the planetary gear(9)Between be provided with some rolling steel balls(14).
7. a kind of fluid pressure type variable-damp vibration damper with generating function according to claim 1 or 6, it is characterised in that Cover on the piston(5)With piston rotation set(7)Junction is provided with piston packing(15).
CN201611137082.XA 2016-12-12 2016-12-12 A kind of fluid pressure type variable-damp vibration damper with generating function Active CN106641080B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319576A1 (en) * 1993-06-14 1994-12-15 Bilstein August Gmbh Co Kg Electric motor adjustment drive (displacement drive)
JP2005214307A (en) * 2004-01-29 2005-08-11 Showa Corp Hydraulic draft gear
CN102673336A (en) * 2012-05-16 2012-09-19 刘向明 Generating device for recycling energy of suspended vibration absorber to charge new-energy-source automobile
CN103580371A (en) * 2013-11-25 2014-02-12 中国农业大学 Ball screw type vehicle vibration absorber capable of realizing rotary power generation
CN103591202A (en) * 2013-11-25 2014-02-19 中国农业大学 Pinion-and-rack rotating power generation car shock absorber
CN104675903A (en) * 2015-01-30 2015-06-03 哈尔滨工程大学 Hydraulic damper capable of generating electricity
CN105114503A (en) * 2015-09-06 2015-12-02 西南交通大学 Automobile energy-feedback type damper
CN105864342A (en) * 2016-04-25 2016-08-17 山东交通学院 Ball circuit type electromagnetic energy-feedback shock absorber
US20160280031A1 (en) * 2015-03-25 2016-09-29 Showa Corporation Shock absorber
CN206309846U (en) * 2016-12-12 2017-07-07 上乘精密科技(苏州)有限公司 A kind of fluid pressure type variable-damp vibration damper with generating function

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319576A1 (en) * 1993-06-14 1994-12-15 Bilstein August Gmbh Co Kg Electric motor adjustment drive (displacement drive)
JP2005214307A (en) * 2004-01-29 2005-08-11 Showa Corp Hydraulic draft gear
CN102673336A (en) * 2012-05-16 2012-09-19 刘向明 Generating device for recycling energy of suspended vibration absorber to charge new-energy-source automobile
CN103580371A (en) * 2013-11-25 2014-02-12 中国农业大学 Ball screw type vehicle vibration absorber capable of realizing rotary power generation
CN103591202A (en) * 2013-11-25 2014-02-19 中国农业大学 Pinion-and-rack rotating power generation car shock absorber
CN104675903A (en) * 2015-01-30 2015-06-03 哈尔滨工程大学 Hydraulic damper capable of generating electricity
US20160280031A1 (en) * 2015-03-25 2016-09-29 Showa Corporation Shock absorber
CN105114503A (en) * 2015-09-06 2015-12-02 西南交通大学 Automobile energy-feedback type damper
CN105864342A (en) * 2016-04-25 2016-08-17 山东交通学院 Ball circuit type electromagnetic energy-feedback shock absorber
CN206309846U (en) * 2016-12-12 2017-07-07 上乘精密科技(苏州)有限公司 A kind of fluid pressure type variable-damp vibration damper with generating function

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Effective date of registration: 20231218

Address after: 315020 Xia Jia, Yongjiang Town, Jiangbei District, Ningbo City, Zhejiang Province

Patentee after: ZHEJIANG JINBO SHOCK ABSORBER MANUFACTURING Co.,Ltd.

Address before: Room 108, building 4, 611 Qinjian Road, Jiaxing, Zhejiang 314000

Patentee before: Jiaxing mark Machinery Equipment Co.,Ltd.