CN203464952U - Angular vibration bench - Google Patents
Angular vibration bench Download PDFInfo
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- CN203464952U CN203464952U CN201320612639.6U CN201320612639U CN203464952U CN 203464952 U CN203464952 U CN 203464952U CN 201320612639 U CN201320612639 U CN 201320612639U CN 203464952 U CN203464952 U CN 203464952U
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Abstract
An angular vibration bench comprises a base, an outer wall and a top cover which are made of magnetizers, wherein the top cover is erected on the outer wall; and the top cover is provided with a movement assembly. The movement assembly comprises a rotation shaft which runs through the top cover, a working table which is fixedly arranged on the top of the rotation shaft and a moving coil which is fixedly arranged on the bottom of the rotation shaft, wherein the moving coil is connected with an alternating power current source. A bearing is arranged between the top cover and the rotation shaft. The rotation shaft is fixedly provided with a torsional spring, wherein the two ends of the torsional spring are respectively fixed to the bearing. The bottom of the top cover is fixedly provided with upper magnetic steel. The top of the base is fixedly provided with lower magnetic steel. The moving coil is in a disc structure and is arranged between the upper magnetic steel and the lower magnetic steel. The moving coil is in clearance fit with the upper magnetic steel and the lower magnetic steel respectively. The angular vibration bench has the advantages that the wiring of the moving coil is uniform, the inertia of the rotation component is small, the operating frequency range is wide, the angular displacement is large and the degree of distortion is small.
Description
Technical field
The utility model relates to a kind of angle vibration table, particularly a kind of angle vibration table of demarcating or calibrating for diagonal angle vibration transducer dynamic property.
Background technology
Along with the development of modern science and technology and the raising of automaticity, the range of application of angular oscillation sensor is more and more wider, application relates to each department and the daily life of national economy, as: Aero-Space, deep-sea detecting, resource exploration, medicine equipment, auto industry and household electrical appliance etc.Before angular oscillation sensor dispatches from the factory, need demarcation, after use certain hour or repairing, need calibration, and one of key equipment that angle vibration table is demarcated or calibrated as angular oscillation sensor dynamic property is more and more subject to people's attention.International standard ISO 16063-15:2006 and China standard GB/T/T 20485.15-2010 have proposed clear and definite technical requirement to the angle vibration table device of absolute calibration angular oscillation sensor.
Common angle vibration table adopts direct current torque motor as driver part, and main shaft and work top are as moving component, and the output shaft of main shaft and direct current torque motor is fixed, and precision bearing is as the supporting construction of moving component.When direct current torque motor is connected with exchange current, motor produces the moment loading of alternation in moving component, makes moving component produce angular oscillation, in order to guarantee that the centre of gyration of angular oscillation is not offset, needs precision bearing to carry out constraint axially and radially to moving component.This kind of angle vibration table is due to the impact of time constant of electric motors, and general operating frequency range is below 100Hz, and due to complicated motor internal magnetic field, even if adopt brushless D. C. torque motor, the waveform distortion of output angle vibration is also larger.If adopted, there is brush direct current torque motor, add the impact of the friction force of motor own, more worsen angular oscillation waveform.
In order to overcome motor as the above-mentioned shortcoming of the angle vibration table of driver part, Chinese patent has disclosed a kind of non-motor mode electric angle vibrative table for No. 200610099078.9, the base that the excitation system of angle vibration table is made by electrical pure iron, magnetic core, outer wall and yoke coordinate with field coil, uniform metallic channel on moving coil framework, drive wire to wrap tightly with insulation gummed paper, insert after the metallic channel on moving coil framework, high pressure dipping lacquer, solidify, wire stretches out at wire casing two ends and the welding of establishment flexible cord, main shaft is hollow cylinder cup structure, its two ends are connected with table top with moving-coil respectively, spindle jacket dress rubber tube, the two ends of rubber tube are bonded in respectively on supporting seat and table top with seccotine, moving-coil is placed between magnetic core and yoke.This angle vibration table produces magnetic field by field coil, passes into the electric current of alternation to the moving-coil that is arranged in air-gap field, and under the electromagnetic coupled effect in moving-coil and magnetic field, moving-coil produces the moment of alternation, thereby makes the work top being connected with moving-coil produce angular oscillation.The shortcoming of this angle vibration table is: 1) movable coil winding difficulty, connect up inhomogeneous, and complex process; 2) rotatable parts inertia is large, and operating frequency range is narrow, and angular acceleration waveform distortion is large; 3) due to the recovery spring that adopts rubber tube spring as driver part, limited angle range, angular displacement is little.
Utility model content
In order to overcome the above-mentioned shortcoming of prior art, the utility model provides the angle vibration table that a kind of moving-coil wiring is even, rotatable parts inertia is little, operating frequency range is wide, angular displacement is large, degree of distortion is little.
A kind of angle vibration table, comprise base, outer wall and the top cover by magnetic conductor, made, top cover frame is located on outer wall, motion assembly is installed on top cover, motion assembly comprises the rotating shaft that runs through top cover, be fixed on the work top and the moving-coil that is fixed on rotating shaft bottom at rotating shaft top, moving-coil is connected with alternation power current source, between rotating shaft and top cover, be provided with bearing, in rotating shaft, be fixed with torsion spring, two ends of torsion spring are individually fixed on bearing, and torsion spring is for the equilibrium position of fixed rotating shaft, prevent that rotating shaft from drifting about.
It is characterized in that: cap base is fixed with top magnet steel, base top is fixed with bottom magnet steel, and moving-coil is tray type structure, and moving-coil is between top magnet steel and bottom magnet steel, and moving-coil coordinates with top magnet steel and bottom magnetic steel gap respectively.
Further, top magnet steel and bottom magnet steel surround respectively a circle ring area, and the circle ring area of top magnet steel is coaxial with the circle ring area of bottom magnet steel.
Further, moving-coil comprises at least one moving-coil unit, moving-coil unit comprises the matrix of disc-shaped and is fixed on the coil groups on matrix surface, a coil groups comprises the first coil and the second coil being formed by a wire coiling, adopts series connection or be connected in parallel between each coil groups on a moving-coil unit; The first coil and the second coil comprise respectively and are positioned at the active wires group in magnetic field and are positioned at the connection wire group outside magnetic field, each coil has two active wires groups, connecting wire group is connected with the active wires group of both sides respectively, connect wire group concentric with matrix, the wire in active wires group all points to the center of circle of matrix; In a moving-coil unit, two adjacent active wires groups form an Ampère force generating unit, the corresponding magnetic field of each Ampère force generating unit, and current opposite in direction in two adjacent Ampère force generating units.When having a plurality of moving-coils unit, a plurality of moving-coils unit connects in the mode of serial or parallel connection, and the parallel and alignment of the coil position of adjacent moving-coil unit, is then gluedd joint and be pressed into a moving-coil by prepreg.
Matrix is solidified and is formed by glass cloth, epoxy and solvent, matrix surface presses the uniform copper layer of one deck thickness by cementing agent through the mode of hot pressing, copper layer to matrix surface carries out lithography, carves and removes the copper layer of matrix surface except loop, and remaining copper layer has just formed matrix surface coil.
Further, top magnet steel and bottom magnet steel are comprised of the permanent magnet of a plurality of tile shapes respectively, gapped between adjacent permanent magnet, the permanent magnet of top magnet steel or bottom magnet steel surrounds respectively annular, the permanent magnet of the permanent magnet of top magnet steel and bottom magnet steel is corresponding one by one, top magnet steel lower surface is that permanent magnet and the bottom magnet steel upper surface of the S utmost point (or N utmost point) is the permanent magnet of the N utmost point (or S utmost point) and the base of being made by magnetic conductor, outer wall, top cover and air gap have formed double magnetic source magnetic structure, the mmf of the permanent magnet of top magnet steel and bottom magnet steel superposes at air gap place, air-gap field is strong and even, can guarantee that the wire in moving-coil is stressed evenly, avoid unbalance stress to cause the distortion of moving-coil.Permanent magnet segment angle is larger, and the angular displacement of moving-coil motion is also larger.
Further, bearing between rotating shaft and top cover is air bearing, air bearing comprises bearing seat, air bearing body, air bearing body is socketed in bearing seat, bearing sleeve is connected on top cover, bearing seat is provided with the air intake opening that connects source of the gas, air bearing body comprises the journalling sleeve portion of supporting shaft and the push stopping part of holding work top, journalling sleeve portion is provided with gas is introduced in sleeve and rotating shaft gap to form the journal bearing flow controller of axial air film, push stopping part is provided with introduces in push stopping part and workbench gap gas to form the radially thrust bearing flow controller of air film, in bearing seat, be provided with and be communicated with the air intake opening of source of the gas and the gas channel of journal bearing flow controller and thrust bearing flow controller.
Radially air film holds up work top, and axially air film can be avoided the journalling sleeve portion rubbing contact of rotating shaft and air bearing body.Because the viscosity of gas is minimum, can think that friction is very little or without friction, thereby can reduce the degree of distortion of angle vibration table output movement waveform; In addition, the swing of the interaction energy limit angles shaking table of gas film stiffness or transverse movement, in very little scope, meet job requirement.
Further, push stopping part offers connection shaft to the first exhaust passage of air film and ambient atmosphere, and journalling sleeve portion offers connection shaft to the second exhaust passage of air film and ambient atmosphere.
Further, the second exhaust passage comprises connection shaft to the annular waste air duct of air film and is communicated with annular waste air duct and extraneous axial exhaust ducts.
Further, a plurality of throttle orifices that journal bearing flow controller is distributed by even circumferential along journalling sleeve portion form, and thrust bearing flow controller comprises annulus air flue and along the equally distributed a plurality of throttle orifices of annulus air flue.
Further, bearing seat comprises the sleeve of journalling sleeve portion and the annulus of holding push stopping part of socket air bearing body, annulus is set up on top cover, sleeve lining is provided with the circular passage of connection shaft journal bearing flow controller, with the axial interface channel that is communicated with circular passage and thrust bearing flow controller, and connection shaft is to the radially interface channel of interface channel and gas source air inlet.
The utility model has the advantage of:
1, the moving-coil unit that the utility model adopts is comprised of matrix and the coil that is fixed on matrix surface, and coiling evenly, is made simple; A plurality of moving-coils unit connects in the mode of serial or parallel connection, and then parallel the and alignment of the coil position of adjacent moving-coil unit is gluedd joint to suppress by prepreg and formed moving-coil, it is little that whole moving-coil has volume, quality is light, and moment of inertia is little, the advantage that natural frequency is high.
2, the air bearing that the utility model adopts is by forming between axial air film, push stopping part and workbench and form radially air film between the journalling sleeve portion of air bearing body and rotating shaft, and this bearing has advantages of that rotating accuracy is high, friction force is little, motion is steady, improves angle vibration table output waveform degree of distortion and teeter amount.
3, the air-gap field angular range of the double magnetic source magnetic structure formation of the utility model employing is large, intensity large and even, and moving-coil, between top magnet steel and bottom magnet steel, guarantees that the wire in moving-coil is stressed even, the advantage that moving-coil corner displacement is large.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment 1.
Fig. 2 is the schematic diagram of moving-coil.
Fig. 3 is that 2 permanent magnet lower surface magnetic poles of top magnet steel distribute.
Fig. 4 is that 2 permanent magnet upper surface magnetic poles of bottom magnet steel distribute.
Fig. 5 is the schematic diagram of embodiment 2.
Fig. 6 is the distribution schematic diagram of the gas channel of bearing seat inside.
Fig. 7 is the distribution schematic diagram of air bearing body interior flow controller.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of angle vibration table, comprise the base 1 of being made by magnetic conductor, outer wall 3 and top cover 6, top cover 6 is set up on outer wall 3, motion assembly is installed on top cover 6, motion assembly comprises rotating shaft 9, with fixing work top 10 and the moving-coil 4 of rotating shaft 9, by school sensor, be placed on work top 10, between rotating shaft 9 and top cover 6, be provided with bearing 12, top cover 6 bottoms are fixed with top magnet steel 5, base 1 top is fixed with bottom magnet steel 2, moving-coil 4 joins with alternate current-changing source, moving-coil 4 is tray type structure, moving-coil 4 is between top magnet steel 5 and bottom magnet steel 2, moving-coil 4 respectively with top magnet steel 5 and bottom magnet steel 2 clearance fit.
In rotating shaft 9, be fixed with torsion spring 11, two ends of torsion spring 11 are individually fixed on bearing 12, and torsion spring 11 is for the equilibrium position of fixed rotating shaft 9, prevent that rotating shaft 9 from drifting about.
As shown in Figure 2, the concrete structure of moving-coil 4 is as follows: moving-coil unit comprises the matrix 41 of disc-shaped and is fixed on the lip-deep coil groups of matrix 41, coil groups comprises between the first coil 421 of being formed by a wire coiling and each coil groups on 422, one moving-coil unit of the second coil and adopts series connection or be connected in parallel; The first coil 421 and the second coil 422 comprise respectively and are positioned at the active wires group 4A in magnetic field and are positioned at connection wire group 4B, the 4C outside magnetic field, each coil has two active wires group 4A, connecting wire group 4B, 4C is connected with the active wires group 4A of both sides respectively, connect wire group 4B, 4C concentric with matrix 41, the wire in active wires group 4A all points to the center of circle of matrix 41; In a moving-coil unit, two adjacent active wires groups form an Ampère force generating unit, the corresponding magnetic field of each Ampère force generating unit, and current opposite in direction in two adjacent Ampère force generating units.When having a plurality of moving-coils unit 4D, a plurality of moving-coils unit 4D connects in the mode of serial or parallel connection, and the parallel and alignment of the coil position of adjacent moving-coil unit 4D, is then gluedd joint and be pressed into a moving-coil 4 by prepreg.
A lower surface of top magnet steel 5 is that the permanent magnet of the S utmost point (or N utmost point) and a upper surface of bottom magnet steel 2 are that permanent magnet and the base 1 of being made by magnetic conductor, outer wall 3, top cover 6 and the air gap of the N utmost point (or S utmost point) formed double magnetic source magnetic structure, the mmf of two permanent magnets superposes at air gap place, air-gap field is strong and even, can guarantee that the wire 43 in moving-coil 4 is stressed evenly, avoid unbalance stress to cause the distortion of moving-coil 4.Permanent magnet segment angle is larger, and the angular displacement of moving-coil motion is also larger.
The present embodiment has the following advantages:
1, moving-coil unit is comprised of matrix and the coil that is fixed on matrix surface, and coiling evenly, is made simple; A plurality of moving-coils unit connects in the mode of serial or parallel connection, and then parallel the and alignment of the coil position of adjacent moving-coil unit is gluedd joint to suppress by prepreg and formed moving-coil, it is little that whole moving-coil has volume, quality is light, and moment of inertia is little, the advantage that natural frequency is high.
2, the air-gap field angular range of the double magnetic source magnetic structure of employing formation is large, intensity large and even, and moving-coil, between top magnet steel and bottom magnet steel, guarantees that the wire in moving-coil is stressed even, the advantage that moving-coil corner displacement is large.
The difference part of the present embodiment and embodiment 1 the has been refinement concrete structure of bearing, all the other structures are all identical with embodiment 1.
As shown in Figure 5, bearing between rotating shaft 9 and top cover 6 is air bearing, and air bearing comprises bearing seat 7, air bearing body 8, and air bearing body 8 is socketed in bearing seat 7, bearing seat 7 is socketed on top cover 6, and two ends of torsion spring 11 are individually fixed on bearing seat 7.
As shown in Figure 6,7, bearing seat 7 is provided with the air intake opening 76 that connects source of the gas, air bearing body 8 comprises the 8A of journalling sleeve portion of supporting shaft 9 and the push stopping part 8B of holding work top 10, the 8A of journalling sleeve portion is provided with gas is introduced in sleeve and rotating shaft 9 gaps to form the journal bearing flow controller 83 of axial air film, push stopping part 8B is provided with gas is introduced in push stopping part and workbench gap to form the radially thrust bearing flow controller 84 of air film, is provided with and is communicated with the air intake opening 76 of source of the gas and the gas channel of journal bearing flow controller 83 and thrust bearing flow controller 84 in bearing seat 7.
Radially air film holds up work top 10, and axially air film can be avoided the 8A of the journalling sleeve portion rubbing contact of rotating shaft 9 and air bearing body 8.Because the viscosity of gas is minimum, can think that friction is very little or without friction, thereby can reduce the degree of distortion of angle vibration table output movement waveform; In addition, the swing of the interaction energy limit angles shaking table of gas film stiffness or transverse movement, in very little scope, meet job requirement.
Gas enters in air bearing by air intake opening 76 continuously, and the first exhaust passage 81 and the second exhaust passage 82 be Exhaust Gas constantly, and air-film thickness maintains mobile equilibrium, therefore the air flue of air bearing body 8 is without carrying out encapsulation process, simple in structure, it is convenient to control, low cost of manufacture.
A plurality of throttle orifices that journal bearing flow controller 83 is distributed by the even circumferential along the 8A of journalling sleeve portion form; Thrust bearing flow controller 84 comprises annulus air flue 841 and along the equally distributed a plurality of throttle orifices 842 of annulus air flue 841.
The present embodiment refinement the concrete structure of bearing, utilize between air bearing body and rotating shaft and form between axial air film, air bearing body and workbench and form radially air film, this bearing has advantages of that rotating accuracy is high, friction force is little, motion is steady, improves angle vibration table output waveform degree of distortion and teeter amount.
Content described in this instructions embodiment is only enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also and the equivalent technologies means that can expect according to the utility model design in those skilled in the art.
Claims (9)
1. an angle vibration table, comprise base, outer wall and the top cover by magnetic conductor, made, top cover frame is located on outer wall, motion assembly is installed on top cover, and motion assembly comprises the rotating shaft that runs through top cover, is fixed on the work top and the moving-coil that is fixed on rotating shaft bottom at rotating shaft top, moving-coil is connected with alternation power current source, between rotating shaft and top cover, be provided with bearing, be fixed with torsion spring in rotating shaft, two ends of torsion spring are individually fixed on bearing; It is characterized in that: cap base is fixed with top magnet steel, base top is fixed with bottom magnet steel, and moving-coil is tray type structure, and moving-coil is between top magnet steel and bottom magnet steel, and moving-coil coordinates with top magnet steel and bottom magnetic steel gap respectively.
2. angle vibration table as claimed in claim 1, is characterized in that: top magnet steel and bottom magnet steel surround respectively a circle ring area, and the circle ring area of top magnet steel is coaxial with the circle ring area of bottom magnet steel.
3. angle vibration table as claimed in claim 2, it is characterized in that: moving-coil comprises at least one moving-coil unit, moving-coil unit comprises the matrix of disc-shaped and is fixed on the coil groups on matrix surface, a coil groups comprises the first coil and the second coil being formed by a wire coiling, adopts series connection or be connected in parallel between each coil groups on a moving-coil unit; The first coil and the second coil comprise respectively and are positioned at the active wires group in magnetic field and are positioned at the connection wire group outside magnetic field, each coil has two active wires groups, connecting wire group is connected with the active wires group of both sides respectively, connect wire group concentric with matrix, the wire in active wires group all points to the center of circle of matrix; In a moving-coil unit, two adjacent active wires groups form an Ampère force generating unit, the corresponding magnetic field of each Ampère force generating unit, and current opposite in direction in two adjacent Ampère force generating units.
4. angle vibration table as claimed in claim 3, it is characterized in that: top magnet steel and bottom magnet steel are comprised of the permanent magnet of a plurality of tile shapes respectively, gapped between adjacent permanent magnet, the permanent magnet of top magnet steel or bottom magnet steel surrounds respectively annular, and the permanent magnet of the permanent magnet of top magnet steel and bottom magnet steel is corresponding one by one.
5. the angle vibration table as described in one of claim 1-4, it is characterized in that: the bearing between rotating shaft and top cover is air bearing, air bearing comprises bearing seat, air bearing body, air bearing body is socketed in bearing seat, bearing sleeve is connected on top cover, bearing seat is provided with the air intake opening that connects source of the gas, air bearing body comprises the journalling sleeve portion of supporting shaft and the push stopping part of holding work top, journalling sleeve portion is provided with gas is introduced in sleeve and rotating shaft gap to form the journal bearing flow controller of axial air film, push stopping part is provided with introduces in push stopping part and workbench gap gas to form the radially thrust bearing flow controller of air film, in bearing seat, be provided with and be communicated with the air intake opening of source of the gas and the gas channel of journal bearing flow controller and thrust bearing flow controller.
6. angle vibration table as claimed in claim 5, is characterized in that: push stopping part offers connection shaft to the first exhaust passage of air film and ambient atmosphere, and journalling sleeve portion offers connection shaft to the second exhaust passage of air film and ambient atmosphere.
7. angle vibration table as claimed in claim 6, is characterized in that: the second exhaust passage comprises connection shaft to the annular waste air duct of air film and is communicated with annular waste air duct and extraneous axial exhaust ducts.
8. angle vibration table as claimed in claim 7, is characterized in that: a plurality of throttle orifices that journal bearing flow controller is distributed by the even circumferential along journalling sleeve portion form, and thrust bearing flow controller comprises annulus air flue and along the equally distributed a plurality of throttle orifices of annulus air flue.
9. angle vibration table as claimed in claim 8, it is characterized in that: bearing seat comprises the sleeve of journalling sleeve portion and the annulus of holding push stopping part of socket air bearing body, annulus is set up on top cover, sleeve lining is provided with the circular passage of connection shaft journal bearing flow controller, with the axial interface channel that is communicated with circular passage and thrust bearing flow controller, and connection shaft is to the radially interface channel of interface channel and gas source air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612639.6U CN203464952U (en) | 2013-09-27 | 2013-09-27 | Angular vibration bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612639.6U CN203464952U (en) | 2013-09-27 | 2013-09-27 | Angular vibration bench |
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| Publication Number | Publication Date |
|---|---|
| CN203464952U true CN203464952U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320612639.6U Withdrawn - After Issue CN203464952U (en) | 2013-09-27 | 2013-09-27 | Angular vibration bench |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471642A (en) * | 2013-09-27 | 2013-12-25 | 浙江大学 | Angular vibration table |
| CN104180844A (en) * | 2014-09-02 | 2014-12-03 | 浙江大学 | Solenoid drive type angular vibration table |
| CN104180842A (en) * | 2014-09-02 | 2014-12-03 | 浙江大学 | Broadband large-displacement angular vibration table |
| CN104180843A (en) * | 2014-09-02 | 2014-12-03 | 浙江大学 | Moving coil of angular vibration table |
| CN106224703A (en) * | 2016-08-24 | 2016-12-14 | 常州市鑫尔减速机有限公司 | Dynamically type cycloidal planetary gear speed reducer frame |
-
2013
- 2013-09-27 CN CN201320612639.6U patent/CN203464952U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471642A (en) * | 2013-09-27 | 2013-12-25 | 浙江大学 | Angular vibration table |
| CN103471642B (en) * | 2013-09-27 | 2016-08-17 | 浙江大学 | A kind of angle vibration table |
| CN104180844A (en) * | 2014-09-02 | 2014-12-03 | 浙江大学 | Solenoid drive type angular vibration table |
| CN104180842A (en) * | 2014-09-02 | 2014-12-03 | 浙江大学 | Broadband large-displacement angular vibration table |
| CN104180843A (en) * | 2014-09-02 | 2014-12-03 | 浙江大学 | Moving coil of angular vibration table |
| CN104180844B (en) * | 2014-09-02 | 2017-04-12 | 浙江大学 | Solenoid drive type angular vibration table |
| CN106224703A (en) * | 2016-08-24 | 2016-12-14 | 常州市鑫尔减速机有限公司 | Dynamically type cycloidal planetary gear speed reducer frame |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160817 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160817 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |