CN105318170A - Computer magnetic cantilever support - Google Patents
Computer magnetic cantilever support Download PDFInfo
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- CN105318170A CN105318170A CN201510869651.9A CN201510869651A CN105318170A CN 105318170 A CN105318170 A CN 105318170A CN 201510869651 A CN201510869651 A CN 201510869651A CN 105318170 A CN105318170 A CN 105318170A
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- cam
- slope
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- cutting
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Abstract
The invention provides a computer magnetic cantilever support which comprises a support plate. The computer magnetic cantilever support is characterized in that the support plate is connected with a positioning shaft through a rotary clamping base, wherein a locking bolt is arranged on the rotary clamping base; the positioning shaft is connected with a housing; the inner wall of the housing is connected with a permanent magnet through a return spring; one side of the housing is provided with a soft magnet; a cam is arranged between the permanent magnet and the soft magnet; and the cam is connected with a cam rotary positioning mechanism. According to the computer magnetic cantilever support, a rotary handle is regulated to drive the cam to control a distance between the permanent magnet and the soft magnet; when the distance is shortest, the soft magnet is excited, and the support plate can be firmly absorbed on the surface of any magnetic metal. After use, a dowel pin is released, and the rotary handle is rotated, so that the permanent magnet is far away from the soft magnet, magnetism of the soft magnet is lost, and the support plate is taken down. The design is suitable for the characteristic that a construction site and a workshop do not have a proper working plane, but have multiple metals, and is very high in practicability.
Description
Technical field
The present invention relates to computer realm, specifically, relate to a kind of computer magnetic force cantilever bearing.
Background technique
Notebook has become very general instrument, is applied in widely among work, study and amusement by people.The narrow limitation that notebook uses is needs plane that can place it in plane.Such as, but under many circumstances, building site or workshop, a stable worktable is difficult to obtain.Designer uses notebook generally to adopt the mode of hand rest in this case, and inconvenience very is also unfavorable for operation.
Summary of the invention:
The technical problem to be solved in the present invention is to provide a kind of computer magnetic force cantilever bearing, overcome designer at the construction field (site) or building site use notebook to can not find the problem of the worktable of a safety and steady.
The present invention adopts following technological scheme to realize goal of the invention:
A kind of computer magnetic force cantilever bearing, comprise supporting plate, it is characterized in that: described supporting plate connects positioning shaft by rotating deck, described rotation deck is provided with Cock screw, described positioning shaft connected with outer casing, described outer casing inner wall connects permanent magnet by Returnning spring, and the side of described shell is provided with soft magnetic bodies, be provided with cam between described permanent magnet and soft magnetic bodies, described cam connects cam rotary positioning mechanism.
As the further restriction to the technical program, the side of described supporting plate is provided with fixing chuck plate.
As the further restriction to the technical program, described cam rotary positioning mechanism comprises the rotating handles be connected with described cam, the side of described rotating handles is provided with locating slot, the extension spring be connected with described shell is provided with in described locating slot, described rotating handles is provided through the tightening pin of described locating slot, described shell is provided with described tightening pin with the use of clamping pin-and-hole.
As the further restriction to the technical program, described supporting plate is provided with radiation hole.
As the further restriction to the technical program, described cam adopts face cam.
As the further restriction to the technical program, the working process of described face cam is as follows:
(1) the coordinate array of cam profile curve and the coordinate array of roller axle center locus is obtained according to roller method of measurement;
(2) according to the coordinate value M (X1 of the point of on cam profile curve, and the coordinate value S (X2 in the roller axle center of this some correspondence Y1), Y2), calculate the coordinate value of circular cut cutter rotating center relative to a respective point of the cam rotating shaft heart, specific practice is:
Point M on connection cam profile curve and the roller AnchorPoint S of this some correspondence, the line segment formed and radius of roller R, with a M for starting point, the point extending the distance acquisition of rotary cutter radius r along radius of roller R is the central point N (X3, Y3) of rotary cutter;
(3) repeat step (2), obtain the relative movement curve of the cutting tool rotating center corresponding to whole cam profile curve;
(4) make cutting tool produce motion according to above-mentioned relative movement curve to process cam on cam cutting equipment.
As the further restriction to the technical program, described step (2) comprises the steps:
(2.1) lateral coordinates calculating described cutting tool rotary middle point N is:
X3=X1-r/R*/X2-X1/ is as X1>X2
Or
X3=X1+r/R* ∣ X2-X1 ∣ is as X1<X2;
(2.2) y coordinate calculating described cutting tool rotary middle point N is:
Y3=Y1-r/R* ∣ Y2-Y1 ∣ is as Y1>Y2
Or
Y3=Y1+r/R* ∣ Y2-Y1 ∣ is as Y1<Y2;
(2.3) the coordinate value N (X3, Y3) of described cutting tool rotating center is obtained.
As the further restriction to the technical program, carry out accuracy evaluation to the cam that described step (4) processes, concrete steps are as follows:
(4.1) difference calculating angular coordinates on described relative movement curve be adjacent 2 of φ between distance and the slope of adjacent 2 lines, whole relative movement curve has n to consecutive points, then obtains n line distance L
iwith n slope θ
i, i is integer, for distinguishing different adjacent coordinates points, slope θ
irefer to the difference of angular coordinates on relative movement curve be adjacent 2 of φ between line L
irelative to the inclination slope of X-axis;
(4.2) calculating cutting tool completes the difference of angular coordinates is the actual displacements distance of adjacent 2 processing of φ and the slope of this actual displacement distance, whole relative movement curve has n to consecutive points, then obtains n actual displacement circuit L
i' and n slope θ
i', i is integer, for distinguishing different adjacent coordinates points, slope θ
i' refer to actual displacement circuit L
i' relative to the inclination slope of X-axis;
(4.3) by the distance L between calculate adjacent 2
iwith the actual displacement circuit L of corresponding adjacent 2 that calculate
i' compare, show that error is cut in often pair of adjacent displacement of 2:
Δ L
i=L
i-L
i'; I is integer, for distinguishing different adjacent coordinates points;
(4.4) by the slope θ between calculate adjacent 2
iwith the actual slope θ of corresponding adjacent 2 that measure
i' compare, draw the cutting slope error of often pair adjacent 2:
Δ θ
i=θ
i-θ
i'; I is integer, for distinguishing different adjacent coordinates points;
(4.5) calculate total displacement and cut error and slope cutting error:
ZL=| Δ L
1|+| Δ L
2|+...+| Δ L
n|; N is total number of consecutive points;
Z θ=| Δ θ
1|+| Δ θ
2|+...+| Δ θ
n|; N is total number of consecutive points;
(4.6) mean error of displacement calculating cutting and the mean error of slope cutting:
PL=(| Δ L
1|+| Δ L
2|+...+| Δ L
n|)/n; N is total number of consecutive points;
P θ=(| Δ θ
1|+| Δ θ
2|+...+| Δ θ
n|)/n; N is total number of consecutive points.
Compared with prior art, advantage of the present invention and good effect are: the present invention is mainly through regulating rotating handles to drive cam production permanent magnet and soft magnetic bodies distance, when nearest, soft magnetic bodies is excited, and supporting plate can be inhaled firmly on the surface of any magnetic metal.Finish using, unclamp tightening pin, rotate rotating handles, make permanent magnet away from soft magnetic bodies, soft magnetic bodies magnetic disappears, and supporting plate takes off.Such design adapted to building site and workshop without suitable working plane but polymetallic feature, there is extremely strong practicability.Cam adopts high-precision face cam, and making method is simple, and precision is high, is convenient to the distance regulating permanent magnet and soft magnetic bodies more accurately.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of the part A of Fig. 1 of the present invention.
Fig. 3 is the structural representation that cam of the present invention and permanent magnet coordinate.
Fig. 4 is the principle schematic of face cam of the present invention processing.
In figure, 1, supporting plate, 2, rotate deck, 3, positioning shaft, 4, Cock screw, 5, shell, 6, Returnning spring, 7, permanent magnet, 8, soft magnetic bodies, 9, cam, 10, fixing chuck plate, 11, rotating handles, 12, locating slot, 13, extension spring, 14, tightening pin, 15, pin-and-hole is clamped, 16, radiation hole.
Embodiment:
Below in conjunction with embodiment, further illustrate the present invention.
See Fig. 1-Fig. 4, the present invention includes supporting plate 1, described supporting plate 1 connects positioning shaft 3 by rotating deck 2, described rotation deck 2 is provided with Cock screw 4, described positioning shaft 3 connected with outer casing 5, described shell 5 inwall connects permanent magnet 7 by Returnning spring 6, and the side of described shell 5 is provided with soft magnetic bodies 8, be provided with cam 9 between described permanent magnet 7 and soft magnetic bodies 8, described cam 9 connects cam rotary positioning mechanism.
The side of described supporting plate 1 is provided with one group of fixing chuck plate 10, and fixing chuck plate 10 can prevent computer from supporting plate 1 landing.
Described cam rotary positioning mechanism comprises the rotating handles 11 be connected with described cam 9, the side of described rotating handles 11 is provided with locating slot 12, the extension spring 13 be connected with described shell 5 is provided with in described locating slot 12, described rotating handles 11 is provided through the tightening pin 14 of described locating slot 12, described shell 5 is provided with described tightening pin 14 with the use of clamping pin-and-hole 15.
Described supporting plate 1 is provided with radiation hole 16.
Cam magnetic-force bearing is with moving cam 9 to control permanent magnet 7 and soft magnetic bodies 8 distance mainly through regulating rotating handles 11, and when nearest, soft magnetic bodies 8 is excited, and supporting plate 1 can be inhaled firmly on the surface of any magnetic metal.Finish using, unclamp tightening pin 14, rotate rotating handles 11, make permanent magnet 7 away from soft magnetic bodies 8, soft magnetic bodies 8 magnetic disappears, and supporting plate 1 takes off.Such design adapted to building site and workshop without suitable working plane but polymetallic feature, there is extremely strong practicability.
Before use supporting plate 1 angle adjusting mechanism, unclamp Cock screw 4, supporting plate 1 can turn an angle around positioning shaft 3, tightens Cock screw 4 after having rotated, and supporting plate 1 is fixed.It is user for the different angle adjustment demand of computer screen that such design meets, and regulate simple, location is reliable simultaneously.
Described cam 9 adopts face cam.
Face cam adopts following making step:
(1) the coordinate array of cam profile curve and the coordinate array of roller axle center locus is obtained according to roller method of measurement;
(2) according to the coordinate value M (X1 of the point of on cam profile curve, and the coordinate value S (X2 in the roller axle center of this some correspondence Y1), Y2), calculate the coordinate value of circular cut cutter rotating center relative to a respective point of the cam rotating shaft heart, specific practice is:
Point M on connection cam profile curve and the roller AnchorPoint S of this some correspondence, the line segment formed and radius of roller R, with a M for starting point, the point extending the distance acquisition of rotary cutter radius r along radius of roller R is the central point N (X3 of rotary cutter, Y3), wherein, M (X1, Y1), S (X2, Y2) and N (X3, Y3) be in the same coordinate system XOY, system of coordinates XOY with the axle center of cam profile curve for initial point O, being X-axis with substantially horizontal, take Vertical direction as Y-axis;
(3) repeat step (2), obtain the relative movement curve of the cutting tool rotating center corresponding to whole cam profile curve;
(4) make cutting tool produce motion according to above-mentioned relative movement curve to process cam on cam cutting equipment.
Described step (2) comprises the steps:
(2.1) lateral coordinates calculating described cutting tool rotary middle point N is:
X3=X1-r/R*/X2-X1/ is as X1>X2
Or
X3=X1+r/R* ∣ X2-X1 ∣ is as X1<X2;
(2.2) y coordinate calculating described cutting tool rotary middle point N is:
Y3=Y1-r/R* ∣ Y2-Y1 ∣ is as Y1>Y2
Or
Y3=Y1+r/R* ∣ Y2-Y1 ∣ is as Y1<Y2;
(2.3) the coordinate value N (X3, Y3) of described cutting tool rotating center is obtained.
Carry out accuracy evaluation to the cam that described step (4) processes, concrete steps are as follows:
(4.1) difference calculating angular coordinates on described relative movement curve be adjacent 2 of φ between distance and the slope of adjacent 2 lines, whole relative movement curve has n to consecutive points, then obtains n line distance L
iwith n slope θ
i, i is integer, for distinguishing different adjacent coordinates points, slope θ
irefer to the difference of angular coordinates on relative movement curve be adjacent 2 of φ between line L
irelative to the angle of inclination of X-axis.Concrete computational process is: the difference of known relative movement curvilinear angle coordinate is the coordinate N of adjacent 2 of φ
i(x, y) and N
i+1(x, y), calculating at these adjacent 2 is n with the distance of initial point O (0,0)
iand n
i+1these adjacent 2 form triangle with initial point O, according to leg-of-mutton length of side formula, the length on known triangle both sides and the included angle on these triangle both sides, be easy to the length calculating another limit of triangle, line L between adjacent 2 of this length to be namely the difference of angular coordinates on relative movement curve be φ
ilength:
θ
i=| ((N
i+1(y)-N
i(y))/(N
i+1(x)-N
i(x)) |; Wherein, N
i+1y () represents some N
i+1y-axis coordinate, N
iy () represents some N
iy-axis coordinate, N
i+1x () represents some N
i+1x axis coordinate, N
ix () represents some N
ix axis coordinate;
(4.2) calculating cutting tool completes the difference of angular coordinates is the actual displacements distance of adjacent 2 processing of φ and the slope θ of this actual displacement distance
i', whole relative movement curve there is n to consecutive points, then obtains n actual displacement circuit L
i' and n slope θ
i', i is integer, for distinguishing different adjacent coordinates points, slope θ
i' refer to actual displacement circuit L
i' relative to the angle of inclination of X-axis.Concrete computational process is: cutting tool along relative movement curve from a N
i(x, y) moves to a N
i+1in (x, y) process, N
i(x, y) and some N
i+1the difference of (x, y) angular coordinates is φ, and X axis encoder have recorded the rotation revolution of X axis drive motor, and Y-axis encoder have recorded the rotation revolution of Y-axis drive motor, calculates the displacement h of X axis drive motor according to the rotation revolution of X axis drive motor
i, the displacement k of Y-axis drive motor is calculated according to the rotation revolution of Y-axis drive motor
i, actual displacement circuit
tilt angle theta
i' slope be k
i/ h
i;
(4.3) by the distance L between calculate adjacent 2
iwith the actual displacement circuit L of corresponding adjacent 2 that calculate
i' compare, show that error is cut in often pair of adjacent displacement of 2:
Δ L
i=L
i-L
i'; I is integer, for distinguishing different adjacent coordinates points;
(4.4) by the slope θ between calculate adjacent 2
iwith the actual slope θ of corresponding adjacent 2 that measure
i' compare, show that often pair of adjacent slope of 2 cuts error:
Δ θ
i=θ
i-θ
i'; I is integer, for distinguishing different adjacent coordinates points;
(4.5) calculate total displacement and cut error and slope cutting error:
ZL=| Δ L
1|+| Δ L
2|+...+| Δ L
n|; N is total number of consecutive points;
Z θ=| Δ θ
1|+| Δ θ
2|+...+| Δ θ
n|; N is total number of consecutive points;
(4.6) mean error of displacement calculating cutting and the mean error of slope cutting:
PL=(| Δ L
1|+| Δ L
2|+...+| Δ L
n|)/n; N is total number of consecutive points;
P θ=(| Δ θ
1|+| Δ θ
2|+...+| Δ θ
n|)/n; N is total number of consecutive points.
The difference of the angular coordinates in described step (4.1) is φ is a constant.
Described cam cutting equipment adopts numerical control machining center, numerical control machining center adopts existing product, cutting tool adopts milling cutter, do not repeat them here, the X axis drive motor of described numerical control machining center is provided with X axis encoder, the Y-axis drive motor of described numerical control machining center is provided with Y-axis encoder.
Cam processing method of the present invention calculates simple, and greatly reduce the adjacent difference of cam cutting, adjacent difference reduces to 0.1-0.8 micron, substantially negligible, substantially increases the machining accuracy of cam.And the precision after cam cutting is calculated, the precision of cam cutting can be fullyed understand in time, and the convenient processing mode of cam cutting error to numerical control machining center according to calculating adjusts, adjacent 2 that find machining error larger fast adjust, are conducive to the raising of cam cutting efficiency and machining accuracy.
Claims (8)
1. a computer magnetic force cantilever bearing, comprise supporting plate, it is characterized in that: described supporting plate connects positioning shaft by rotating deck, described rotation deck is provided with Cock screw, described positioning shaft connected with outer casing, described outer casing inner wall connects permanent magnet by Returnning spring, and the side of described shell is provided with soft magnetic bodies, be provided with cam between described permanent magnet and soft magnetic bodies, described cam connects cam rotary positioning mechanism.
2. computer magnetic force cantilever bearing according to claim 1, is characterized in that: the side of described supporting plate is provided with fixing chuck plate.
3. computer magnetic force cantilever bearing according to claim 1, it is characterized in that: described cam rotary positioning mechanism comprises the rotating handles be connected with described cam, the side of described rotating handles is provided with locating slot, the extension spring be connected with described shell is provided with in described locating slot, described rotating handles is provided through the tightening pin of described locating slot, described shell is provided with described tightening pin with the use of clamping pin-and-hole.
4. computer magnetic force cantilever bearing according to claim 1, is characterized in that: described supporting plate is provided with radiation hole.
5. computer magnetic force cantilever bearing according to claim 1, is characterized in that: described cam adopts face cam.
6. computer magnetic force cantilever bearing according to claim 5, is characterized in that: the working process of described face cam is as follows:
(1) the coordinate array of cam profile curve and the coordinate array of roller axle center locus is obtained according to roller method of measurement;
(2) according to the coordinate value M (X1 of the point of on cam profile curve, and the coordinate value S (X2 in the roller axle center of this some correspondence Y1), Y2), calculate the coordinate value of circular cut cutter rotating center relative to a respective point of the cam rotating shaft heart, specific practice is:
Point M on connection cam profile curve and the roller AnchorPoint S of this some correspondence, the line segment formed and radius of roller R, with a M for starting point, the point extending the distance acquisition of rotary cutter radius r along radius of roller R is the central point N (X3, Y3) of rotary cutter;
(3) repeat step (2), obtain the relative movement curve of the cutting tool rotating center corresponding to whole cam profile curve;
(4) make cutting tool produce motion according to above-mentioned relative movement curve to process cam on cam cutting equipment.
7. the automobile exhaust gas thermal-magnetic power generation system of sheave commutation according to claim 6, is characterized in that: described step (2) comprises the steps:
(2.1) lateral coordinates calculating described cutting tool rotary middle point N is:
X3=X1-r/R*/X2-X1/ is as X1>X2
Or
X3=X1+r/R* ∣ X2-X1 ∣ is as X1<X2;
(2.2) y coordinate calculating described cutting tool rotary middle point N is:
Y3=Y1-r/R* ∣ Y2-Y1 ∣ is as Y1>Y2
Or
Y3=Y1+r/R* ∣ Y2-Y1 ∣ is as Y1<Y2;
(2.3) the coordinate value N (X3, Y3) of described cutting tool rotating center is obtained.
8. the automobile exhaust gas thermal-magnetic power generation system of described sheave commutation according to claim 6, is characterized in that: carry out accuracy evaluation to the cam that described step (4) processes, concrete steps are as follows:
(4.1) difference calculating angular coordinates on described relative movement curve be adjacent 2 of φ between distance and the slope of adjacent 2 lines, whole relative movement curve has n to consecutive points, then obtains n line distance L
iwith n slope θ
i, i is integer, for distinguishing different adjacent coordinates points, slope θ
irefer to the difference of angular coordinates on relative movement curve be adjacent 2 of φ between line L
irelative to the inclination slope of X-axis;
(4.2) calculating cutting tool completes the difference of angular coordinates is the actual displacements distance of adjacent 2 processing of φ and the slope of this actual displacement distance, whole relative movement curve has n to consecutive points, then obtains n actual displacement circuit L
i' and n slope θ
i', i is integer, for distinguishing different adjacent coordinates points, slope θ
i' refer to actual displacement circuit L
i' relative to the inclination slope of X-axis;
(4.3) by the distance L between calculate adjacent 2
iwith the actual displacement circuit L of corresponding adjacent 2 that calculate
i' compare, show that error is cut in often pair of adjacent displacement of 2:
Δ L
i=L
i-L
i'; I is integer, for distinguishing different adjacent coordinates points;
(4.4) by the slope θ between calculate adjacent 2
iwith the actual slope θ of corresponding adjacent 2 that measure
i' compare, draw the cutting slope error of often pair adjacent 2:
Δ θ
i=θ
i-θ
i'; I is integer, for distinguishing different adjacent coordinates points;
(4.5) calculate total displacement and cut error and slope cutting error:
ZL=| Δ L
1|+| Δ L
2|+...+| Δ L
n|; N is total number of consecutive points;
Z θ=| Δ θ
1|+| Δ θ
2|+...+| Δ θ
n|; N is total number of consecutive points;
(4.6) mean error of displacement calculating cutting and the mean error of slope cutting:
PL=(| Δ L
1|+| Δ L
2|+...+| Δ L
n|)/n; N is total number of consecutive points;
P θ=(| Δ θ
1|+| Δ θ
2|+...+| Δ θ
n|)/n; N is total number of consecutive points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510869651.9A CN105318170B (en) | 2015-12-02 | 2015-12-02 | A kind of computer magnetic force cantilever bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510869651.9A CN105318170B (en) | 2015-12-02 | 2015-12-02 | A kind of computer magnetic force cantilever bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105318170A true CN105318170A (en) | 2016-02-10 |
| CN105318170B CN105318170B (en) | 2017-07-25 |
Family
ID=55246173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510869651.9A Expired - Fee Related CN105318170B (en) | 2015-12-02 | 2015-12-02 | A kind of computer magnetic force cantilever bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105318170B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088751A (en) * | 2019-11-29 | 2020-05-01 | 赵国庆 | Pier upper edge fixing base |
| CN111352491A (en) * | 2020-03-02 | 2020-06-30 | 郝静静 | Computer magnetic cantilever support |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06163239A (en) * | 1992-11-20 | 1994-06-10 | Seiko Epson Corp | Mounting of magnet |
| CN2927310Y (en) * | 2006-07-26 | 2007-07-25 | 德力西集团有限公司 | Permanent-magnet contactor |
| CN101951118A (en) * | 2010-08-09 | 2011-01-19 | 邢宝民 | Permanent magnet clutch mechanism |
| CN104238635A (en) * | 2013-06-14 | 2014-12-24 | 联想(北京)有限公司 | Electronic device |
| CN205208093U (en) * | 2015-12-02 | 2016-05-04 | 刘君 | Computer magnetic force cantilever support |
-
2015
- 2015-12-02 CN CN201510869651.9A patent/CN105318170B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06163239A (en) * | 1992-11-20 | 1994-06-10 | Seiko Epson Corp | Mounting of magnet |
| CN2927310Y (en) * | 2006-07-26 | 2007-07-25 | 德力西集团有限公司 | Permanent-magnet contactor |
| CN101951118A (en) * | 2010-08-09 | 2011-01-19 | 邢宝民 | Permanent magnet clutch mechanism |
| CN104238635A (en) * | 2013-06-14 | 2014-12-24 | 联想(北京)有限公司 | Electronic device |
| CN205208093U (en) * | 2015-12-02 | 2016-05-04 | 刘君 | Computer magnetic force cantilever support |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088751A (en) * | 2019-11-29 | 2020-05-01 | 赵国庆 | Pier upper edge fixing base |
| CN111352491A (en) * | 2020-03-02 | 2020-06-30 | 郝静静 | Computer magnetic cantilever support |
| CN111352491B (en) * | 2020-03-02 | 2022-07-22 | 开封大学 | Computer magnetic force cantilever support |
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|---|---|
| CN105318170B (en) | 2017-07-25 |
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Inventor after: Wang Rui Inventor before: Duan Guangbin Inventor before: Xu Fangchao Inventor before: Fan Changying |
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Effective date of registration: 20170623 Address after: 272100, room 4, unit 2, building 502, radio and Television Bureau, Yanzhou District, Shandong, Jining Applicant after: Wang Rui Address before: West Town West Commercial Street Licheng District 250111 Shandong city of Ji'nan province 107-4 Applicant before: JINAN PARAMECIUM ELECTRONIC TECHNOLOGY CO., LTD. |
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