CN102691739A - Rectangular vibration absorber of two-out-bar magneto-rheological elastic body - Google Patents

Rectangular vibration absorber of two-out-bar magneto-rheological elastic body Download PDF

Info

Publication number
CN102691739A
CN102691739A CN2012101892098A CN201210189209A CN102691739A CN 102691739 A CN102691739 A CN 102691739A CN 2012101892098 A CN2012101892098 A CN 2012101892098A CN 201210189209 A CN201210189209 A CN 201210189209A CN 102691739 A CN102691739 A CN 102691739A
Authority
CN
China
Prior art keywords
rectangle
iron plate
sided
piston
slave cylinder
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.)
Granted
Application number
CN2012101892098A
Other languages
Chinese (zh)
Other versions
CN102691739B (en
Inventor
谭和平
谢宁
刘强
谭晓婧
Original Assignee
谭晓婧
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 谭晓婧 filed Critical 谭晓婧
Priority to CN 201210189209 priority Critical patent/CN102691739B/en
Publication of CN102691739A publication Critical patent/CN102691739A/en
Application granted granted Critical
Publication of CN102691739B publication Critical patent/CN102691739B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Fluid-Damping Devices (AREA)

Abstract

The invention discloses a rectangular vibration absorber of a two-out-bar magneto-rheological elastic body. The rectangular vibration absorber comprises a working cylinder, a piston and a piston rod, wherein the working cylinder is composed of two same single-face rectangular iron plates, N-1 same double-face rectangular iron plates and a rectangular outer pipe; one rectangular plane of each single-face rectangular iron plate is adhered with one layer of magneto-rheological elastic bodies; the two same single-face rectangular iron plates are respectively fixed at two ends of the rectangular outer pipe; two rectangular planes of the double-face rectangular iron plates are adhered with one layer of the magneto-rheological elastic bodies; the piston is composed of N double-face rectangular electromagnets; the piston is arranged in the working cylinder so that the N double-face rectangular electromagnets on the piston are placed in a gap between the magneto-rheological elastic bodies on each rectangular iron plate in the working cylinder; the magneto-rheological elastic bodies on each rectangular iron plate in the working cylinder are adhered with the two rectangular planes of each double-face rectangular electromagnet on the piston; and two ends of the piston rod respectively stretch out from the working cylinder through sliding bearings on the single-face rectangular iron plates at two ends of the working cylinder.

Description

Two outstretch pole magnetorheological elastomer rectangle vibration dampers
Technical field
The invention belongs to a kind of vibration damper, be specifically related to a kind of pair of outstretch pole magnetorheological elastomer rectangle vibration damper.
Background technique
MR damper is a kind of intelligent vibration damper; When this type damper adopts magnetic flow liquid to be resisting medium; Be applicable to mainly that ocsillator strenght is less and vibration damping occasion that Oscillation Amplitude is bigger; As: application number: 200410079249.2 " a kind of magnetorheological suspensions damping device for automobile suspension system "; Because of this type adopts magnetic flow liquid is that the damper of resisting medium is difficult to be applicable to the big less vibration damping occasion (as: vibration damping of jumbo) of Oscillation Amplitude of ocsillator strenght; And the of the present invention pair of outstretch pole magnetorheological elastomer rectangle vibration damper be with magnetic rheology elastic body as resisting medium and adopt rectangle plane and multi-layer structure, therefore, of the present invention pair of outstretch pole magnetorheological elastomer rectangle vibration damper can be adjusted its bearing capacity through adjusting its rectangular area and the number of plies.
Summary of the invention
Be difficult to be applicable to that in order to overcome existing magnetic rheological liquid damper ocsillator strenght is big and the less vibration damping occasion of amplitude the present invention proposes a kind of pair of outstretch pole magnetorheological elastomer rectangle vibration damper.
Technological scheme of the present invention is following: a kind of pair of outstretch pole magnetorheological elastomer rectangle vibration damper; It comprises clutch release slave cylinder, piston and piston rod, and wherein: clutch release slave cylinder is to be made up of two identical two-sided rectangle iron plate and rectangle outer tubes of identical single face rectangle iron plate, N-1 piece; Bonding one deck magnetic rheology elastic body on the rectangle plane of single face rectangle iron plate; On two intersection of diagonal of single face rectangle iron plate, mesopore is arranged; Sliding bearing is installed in mesopore, and two identical single face rectangle iron plates are separately fixed at the two ends of rectangle outer tube; The all bonding magnetic rheology elastic body of one deck on two rectangle planes of two-sided rectangle iron plate, the two-sided rectangle iron plate of N-1 piece is fixed on the inner chamber of two rectangle outer tubes between the single face rectangle iron plate abreast by identical distance; Piston is made up of the two-sided rectangle electromagnet of N piece, on two intersection of diagonal of the two-sided rectangle electromagnet of N piece, mesopore is arranged all, and piston rod passes the mesopore of the two-sided ring electromagnet of N piece and fixing with it; Piston is installed in the clutch release slave cylinder; Make the two-sided rectangle electromagnet of N piece on the piston place interior each the rectangle iron plate of clutch release slave cylinder to go up in the gap between the magnetic rheology elastic body; And making in the clutch release slave cylinder on the magnetic rheology elastic body on each rectangle iron plate and piston two rectangle planes of each two-sided rectangle electromagnet bonding, stretch out in clutch release slave cylinder through the sliding bearing on the single face rectangle iron plate of clutch release slave cylinder two ends respectively at the two ends of piston rod.Gap in the clutch release slave cylinder between the last magnetic rheology elastic body of each rectangle iron plate equals the thickness of two-sided rectangle electromagnet on the piston.The iron core of two-sided rectangle electromagnet is certain thickness rectangular block, on two of rectangular block parallel rectangle planes, respectively is evenly equipped with at least 4 pairs of magnetic poles, on each magnetic pole, all is wound with field coil; The length of the rectangle iron core of two-sided rectangle electromagnet and width are less than the length and the width of clutch release slave cylinder rectangle outer tube bore longitudinal plane and leave the free gap; The diameter of two-sided rectangle iron plate mesopore is greater than the diameter of piston rod and leave the free gap, and N is not less than 1 natural number.
Function of the present invention is achieved in that because all bonding one deck magnetic rheology elastic body on the surface of each rectangle iron plate in the clutch release slave cylinder; After in piston is installed in clutch release slave cylinder; The two-sided rectangle electromagnet of N piece on the piston places interior each the rectangle iron plate of clutch release slave cylinder to go up in the gap between the magnetic rheology elastic body; And make in the clutch release slave cylinder on the magnetic rheology elastic body on each rectangle iron plate and piston two rectangle planes (that is: magnetic pole strength) of each two-sided rectangle electromagnet bonding; Therefore, when piston rod drives piston and in clutch release slave cylinder, moves, the magnetic rheology elastic body between each rectangle iron plate in each the two-sided rectangle electromagnet and the clutch release slave cylinder that make on the piston is taken place to stretch or compress; When the field coil of each two-sided rectangle electromagnet on the piston does not have electric current to pass through; Each two-sided rectangle electromagnet does not generate an electromagnetic field; Make the elasticity that is in the magnetic rheology elastic body between each two-sided rectangle electromagnet on each interior rectangle iron plate of clutch release slave cylinder and the piston less, it is less to make piston rod drive the damping force that receives when piston moves in clutch release slave cylinder; When the field coil of each two-sided rectangle electromagnet on the piston has electric current to pass through; Each two-sided rectangle electromagnet will generate an electromagnetic field; Owing to all be evenly equipped with at least 4 pairs of magnetic poles on each rectangle plane of two-sided rectangle electromagnet; Therefore; Every pair of magnetic pole on the piston on two rectangle planes of two-sided rectangle electromagnet will through and clutch release slave cylinder in magnetic rheology elastic body between the rectangle iron plate form closed magnetic circuit, make the ferromagnetic particle in the magnetic rheology elastic body that is on the closed magnetic circuit form chain or column aggregated structure and make its elasticity higher at magnetic direction, it is bigger to make piston rod drive the damping force that receives when piston moves in clutch release slave cylinder; Therefore; Get into the size of current in each two-sided rectangle electromagnet on the piston through adjustment; Can adjust the electromagnetic field intensity that each two-sided rectangle electromagnet is produced; Make the elasticity size of the magnetic rheology elastic body between each rectangle iron plate in each the two-sided rectangle electromagnet that is on the piston and the clutch release slave cylinder obtain adjustment, thereby make the damping force of two outstretch pole magnetorheological elastomer rectangle vibration dampers obtain adjustment.
The of the present invention pair of outstretch pole magnetorheological elastomer rectangle vibration damper also can be adjusted its bearing capacity with the number of plies through adjusting its rectangular area size, compares of the present invention pair of outstretch pole magnetorheological elastomer rectangle vibration damper with magnetic rheological liquid damper and can be applicable to that more ocsillator strenght greatly and the less vibration damping occasion of amplitude.
 
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 be Fig. 1 at A to sectional view.
Fig. 3 is a kind of structural representation of single face rectangle iron plate among the present invention.
Fig. 4 is the sectional view of Fig. 3.
Fig. 5 is a kind of structural representation of two-sided rectangle iron plate among the present invention.
Fig. 6 is the sectional view of Fig. 5.
Fig. 7 is a kind of structural representation of two-sided rectangle electromagnet among the present invention.
Fig. 8 is the sectional view of Fig. 7.
Fig. 9 is a kind of work schematic representation of the present invention.
Figure 10 is a kind of application schematic representation of the present invention.
Embodiment
Specify structure of the present invention below in conjunction with accompanying drawing:
Referring to Fig. 1 to Fig. 8; This is that (that is: the quantity of two-sided rectangle iron plate is a kind of concrete structure of the present invention: the situation during N=2); A kind of pair of outstretch pole magnetorheological elastomer rectangle vibration damper; It comprises clutch release slave cylinder, piston and piston rod, and wherein: clutch release slave cylinder 1 is to be made up of single face rectangle iron plate 2 and 15, two-sided rectangle iron plates 10 and rectangle outer tube 6; Bonding one deck magnetic rheology elastic body 12 and 16 on single face rectangle iron plate 2 and 15 the plane; On two intersection of diagonal of single face rectangle iron plate 2, mesopore is arranged; Sliding bearing 4 (seeing for details: Fig. 3 and Fig. 4) is installed in mesopore, on 15 liang of intersection of diagonal of single face rectangle iron plate, mesopore is arranged, sliding bearing 17 (accompanying drawing is omitted) is installed in mesopore; Single face rectangle iron plate 15 is fixed on the lower end of rectangle outer tube 6, and single face rectangle iron plate 2 is fixed on the upper end of rectangle outer tube 6; The all bonding magnetic rheology elastic body 9 and 11 of a layer thickness on two rectangle planes of two-sided rectangle iron plate 10, two-sided rectangle iron plate 10 is fixed on the inner chamber of the rectangle outer tube 6 between single face rectangle iron plate 15 and the single face rectangle iron plate 2 abreast; Piston 20 is made up of two blocks of two-sided rectangle electromagnet 7, on two intersection of diagonal of two-sided rectangle electromagnet 7, mesopore 13 is arranged, and piston rod 3 passes the mesopore of two blocks of two-sided rectangle electromagnet 7 and fixing with it; Piston 20 is installed in the clutch release slave cylinder 1; Two blocks of two-sided rectangle electromagnet 7 on the piston 20 are placed in the clutch release slave cylinder 1 on the rectangle iron plate 2,10 and 15 in magnetic rheology elastic body 12 and 9, the gap between 11 and 16; And make the magnetic rheology elastic body 12 and 9 on the rectangle iron plate 2,10 and 15 in the clutch release slave cylinder 1,11 and 16 and piston 20 on four rectangle planes of two blocks of two-sided rectangle electromagnet 7 bonding, stretch out in clutch release slave cylinder 1 through the sliding bearing 4 and 17 on clutch release slave cylinder 1 two ends single face rectangle iron plate 2 and 15 respectively at the two ends of piston rod 3.Magnetic rheology elastic body 12 and 9, the gap between 11 and 16 equal the thickness of two-sided rectangle electromagnet 7 on the piston 20 on the clutch release slave cylinder 1 interior rectangle iron plate 2,10 and 15.The iron core of two-sided rectangle electromagnet 7 is certain thickness rectangular block, on two of rectangular block parallel rectangle planes, is evenly equipped with 4 to (8) magnetic pole 8, on each magnetic pole 8, all is wound with field coil 5 (seeing for details: Fig. 7 and Fig. 8); The length of the rectangle iron core of two-sided rectangle electromagnet 7 and width are less than the length and the width of clutch release slave cylinder 1 rectangle outer tube 6 inner chamber longitudinal planes and leave the free gap (see for details: Fig. 2), the internal diameter of the mesopore 13 of two-sided rectangle iron plate 10 is greater than the diameter of piston rod 3 and leave the free gap.
Combine now Fig. 9 to come of the present invention pair of outstretch pole magnetorheological elastomer rectangle vibration damper further described with Figure 10: the field coil 5 of two-sided ring electromagnet 7 is through going between and controlling power supply 18 and be connected and (see for details: Fig. 9); Four jiaos of jumbo 19 bottoms through sending out on the blue piston rod 3 that is fixed to 4 two outstretch pole magnetorheological elastomer rectangle vibration dampers 22, and the shell of two outstretch pole magnetorheological elastomer rectangle vibration dampers 22 and ground are fixed and (seen for details: Figure 10).
When control power supply 18 not during field coil 5 output currents of the two-sided rectangle electromagnet 7 on piston 20; Two-sided rectangle electromagnet 7 does not generate an electromagnetic field; Make the rectangle iron plate 2,10 that is in the clutch release slave cylinder 1 and 15 with piston 20 on magnetic rheology elastic body 12,9,11 and 16 elasticity between the two-sided rectangle electromagnet 7 less, the damping force that receives when piston rod 3 drive pistons 20 are moved in clutch release slave cylinder 1 is less; When controlling power supply 18 behind field coil 5 output currents of the two-sided rectangle electromagnet 7 on the piston 20; Two-sided rectangle electromagnet 7 will generate an electromagnetic field; Owing to all be evenly equipped with at least 4 to (8) magnetic pole 8 on two rectangle planes of two-sided rectangle electromagnet 7; Therefore; Every pair of magnetic pole 8 on the piston 20 on two of each two-sided rectangle electromagnet 7 rectangle planes will through and clutch release slave cylinder 1 in magnetic rheology elastic body 12,9,11 and 16 between the rectangle iron plate 2,10 and 15 form closed magnetic circuits (seeing the dotted line among Fig. 9 for details); Make the ferromagnetic particle in the magnetic rheology elastic body 12,9,11 that is on the closed magnetic circuit and 16 form chain or column aggregated structure and make its elasticity higher at magnetic direction, it is bigger to make piston rod 3 drive the damping force that receives when pistons 20 move in clutch release slave cylinder 1; Therefore; Output to the size of current in the two-sided rectangle electromagnet 7 on the piston 20 through adjustment control power supply 18; Can adjust the electromagnetic field intensity that two-sided rectangle electromagnet 7 is produced; Make the elasticity size of the magnetic rheology elastic body 12,9,11 between the rectangle iron plate 2,10 and 15 in the two-sided rectangle electromagnet 7 that is on the piston 20 and the clutch release slave cylinder 1 and 16 obtain adjustment; Thereby the damping force that makes two outstretch pole magnetorheological elastomer rectangle vibration dampers 22 obtains adjustment, and the vibration that jumbo 19 is produced is inhibited.

Claims (5)

1. two outstretch pole magnetorheological elastomer rectangle vibration damper, it comprises clutch release slave cylinder, piston and piston rod, it is characterized in that: said clutch release slave cylinder is to be made up of two identical two-sided rectangle iron plate and rectangle outer tubes of identical single face rectangle iron plate, N-1 piece; Bonding one deck magnetic rheology elastic body on the rectangle plane of said single face rectangle iron plate; On two intersection of diagonal of single face rectangle iron plate, mesopore is arranged; Sliding bearing is installed in mesopore, and two identical single face rectangle iron plates are separately fixed at the two ends of rectangle outer tube; The all bonding magnetic rheology elastic body of one deck on two rectangle planes of said two-sided rectangle iron plate, the two-sided rectangle iron plate of N-1 piece is fixed on the inner chamber of two rectangle outer tubes between the single face rectangle iron plate abreast by identical distance; Said piston is made up of the two-sided rectangle electromagnet of N piece, on two intersection of diagonal of the two-sided rectangle electromagnet of N piece, mesopore is arranged all, and piston rod passes the mesopore of the two-sided ring electromagnet of N piece and fixing with it; Said piston is installed in the clutch release slave cylinder; Make the two-sided rectangle electromagnet of N piece on the piston place interior each the rectangle iron plate of clutch release slave cylinder to go up in the gap between the magnetic rheology elastic body; And making in the clutch release slave cylinder on the magnetic rheology elastic body on each rectangle iron plate and piston two rectangle planes of each two-sided rectangle electromagnet bonding, stretch out in clutch release slave cylinder through the sliding bearing on the single face rectangle iron plate of clutch release slave cylinder two ends respectively at the two ends of piston rod.
2. a kind of pair of outstretch pole magnetorheological elastomer rectangle vibration damper as claimed in claim 1; It is characterized in that: the thickness of bonding magnetic rheology elastic body is identical on the rectangle plane of interior each single face rectangle iron plate of said clutch release slave cylinder and two-sided rectangle iron plate, and the gap between the last magnetic rheology elastic body of interior each the rectangle iron plate of clutch release slave cylinder equals the thickness of two-sided rectangle electromagnet on the piston.
3. a kind of pair of outstretch pole magnetorheological elastomer rectangle vibration damper as claimed in claim 1; It is characterized in that: the iron core of said two-sided rectangle electromagnet is certain thickness rectangular block; On two of rectangular block parallel rectangle planes, respectively be evenly equipped with at least 4 pairs of magnetic poles, on each magnetic pole, all be wound with field coil; The length of the rectangle iron core of said two-sided rectangle electromagnet and width are less than the length and the width of clutch release slave cylinder rectangle outer tube bore longitudinal plane and leave the free gap.
4. a kind of pair of outstretch pole magnetorheological elastomer rectangle vibration damper as claimed in claim 1 is characterized in that: the diameter of said two-sided rectangle iron plate mesopore is greater than the diameter of piston rod and leave the free gap.
5. a kind of pair of outstretch pole magnetorheological elastomer rectangle vibration damper as claimed in claim 1, it is characterized in that: said N is not less than 1 natural number.
CN 201210189209 2012-06-11 2012-06-11 Rectangular vibration absorber of two-out-bar magneto-rheological elastic body Expired - Fee Related CN102691739B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201210189209 CN102691739B (en) 2012-06-11 2012-06-11 Rectangular vibration absorber of two-out-bar magneto-rheological elastic body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201210189209 CN102691739B (en) 2012-06-11 2012-06-11 Rectangular vibration absorber of two-out-bar magneto-rheological elastic body

Publications (2)

Publication Number Publication Date
CN102691739A true CN102691739A (en) 2012-09-26
CN102691739B CN102691739B (en) 2013-09-18

Family

ID=46857401

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201210189209 Expired - Fee Related CN102691739B (en) 2012-06-11 2012-06-11 Rectangular vibration absorber of two-out-bar magneto-rheological elastic body

Country Status (1)

Country Link
CN (1) CN102691739B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074916A (en) * 2014-07-01 2014-10-01 重庆材料研究院有限公司 Magnetic control vibration isolation device
CN105156556A (en) * 2015-07-20 2015-12-16 常州大学 Double-rod multi-stage diffraction active single-control variable-damping magneto-rheological damper

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06341488A (en) * 1993-04-05 1994-12-13 Toyota Motor Corp Vibration damping structural body
CN2747412Y (en) * 2004-11-16 2005-12-21 中国船舶重工集团公司第七○二研究所 Active-passive vabrition damper
CN2898434Y (en) * 2006-04-30 2007-05-09 九江学院 Rubber air spring with magnetic rheological elastomer
CN102678799A (en) * 2012-05-23 2012-09-19 谢宁 Plate-type damper of double-outlet rod magnetorheological elastomer
CN202628906U (en) * 2012-06-11 2012-12-26 谭晓婧 Dual-rod magnetorheological elastomer rectangular absorber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06341488A (en) * 1993-04-05 1994-12-13 Toyota Motor Corp Vibration damping structural body
CN2747412Y (en) * 2004-11-16 2005-12-21 中国船舶重工集团公司第七○二研究所 Active-passive vabrition damper
CN2898434Y (en) * 2006-04-30 2007-05-09 九江学院 Rubber air spring with magnetic rheological elastomer
CN102678799A (en) * 2012-05-23 2012-09-19 谢宁 Plate-type damper of double-outlet rod magnetorheological elastomer
CN202628906U (en) * 2012-06-11 2012-12-26 谭晓婧 Dual-rod magnetorheological elastomer rectangular absorber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074916A (en) * 2014-07-01 2014-10-01 重庆材料研究院有限公司 Magnetic control vibration isolation device
CN104074916B (en) * 2014-07-01 2016-01-20 重庆材料研究院有限公司 Magnetic control isolation mounting
CN105156556A (en) * 2015-07-20 2015-12-16 常州大学 Double-rod multi-stage diffraction active single-control variable-damping magneto-rheological damper

Also Published As

Publication number Publication date
CN102691739B (en) 2013-09-18

Similar Documents

Publication Publication Date Title
CN202007855U (en) Multilevel telescopic magnetorheological damper
CN101749358A (en) Damping force adjustable permanent magnet type magnetic current variable damper
CN108425986B (en) Cylindrical eddy current damping device, damping adjustment method and bridge vibration reduction structure
CN111089136A (en) Magnetic circuit adjustable magnetorheological damper
CN102661346B (en) Double-discharging-rod magnetorheological elastic body plate type shock absorber
CN202628927U (en) Single-outlet rod magnetorheological elastomer plate type damper
CN102182785A (en) Magnetic steel piston type magneto-rheological damper with double ejection rods
CN202628908U (en) Double-outlet rod magneto-rheological elastomer rectangular damper
CN106015436B (en) A kind of rank becomes magneto-rheological damper
CN202007856U (en) Double-rod magnetic steel piston type magneto-rheological damper
CN102691739B (en) Rectangular vibration absorber of two-out-bar magneto-rheological elastic body
CN102128232B (en) Multilevel retractable type magnetorheological damping device
CN102297230B (en) Double-outstretch pole plate magneto-rheological damper
CN102661352B (en) Single-discharging-rod magnetorheological elastic body plate type shock absorber
CN102141108B (en) External electromagnet retractable type magnetorheological damper
CN202628926U (en) Dual-ejector-rod magnetorheological elastomer plate type shock absorber
CN202628906U (en) Dual-rod magnetorheological elastomer rectangular absorber
CN202628904U (en) Double-outlet rod magnetorheological elastomer plate type damper
CN202628905U (en) Single-ended magnetorheological elastomer rectangle shock absorber
CN202628903U (en) Single-output rod magneto-rheological elastomer plate-type shock absorber
CN202628907U (en) Single-rod rectangular shock absorber with magnetorheological elastomers
CN102678799A (en) Plate-type damper of double-outlet rod magnetorheological elastomer
CN102678802B (en) Dual-ejector-rod magnetorheological elastomer rectangular shock absorber
CN101215860A (en) High output MR damper
CN102135154A (en) Alnico piston-type magneto-rheological damper with single piston rod

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130918

Termination date: 20140611

EXPY Termination of patent right or utility model