CN106428378A - Foldable control handle of electric balance bike - Google Patents
Foldable control handle of electric balance bike Download PDFInfo
- Publication number
- CN106428378A CN106428378A CN201610784862.7A CN201610784862A CN106428378A CN 106428378 A CN106428378 A CN 106428378A CN 201610784862 A CN201610784862 A CN 201610784862A CN 106428378 A CN106428378 A CN 106428378A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- handlebody
- connecting seat
- balance car
- folding
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/12—Handlebars; Handlebar stems
- B62K21/16—Handlebars; Handlebar stems having adjustable parts therein
Abstract
The invention belongs to the technical field of electric bike equipment, particularly relates to a foldable control handle of an electric balance bike, and solves the technical problem that the control handle of a conventional electric balance bike is not convenient to fold. The foldable control handle comprises handle bodies; through a swing connection structure, each handle body is in swing connection with a connecting seat arranged on a control lever; a sleeve is arranged on the periphery of each swing connection structure in a sleeving manner, and the two ends of each sleeve respectively extend to the periphery of the handle body and the periphery of the connecting seat so as to prevent the handle body from swinging relative to the connecting seat; and each sleeve is connected with a positioning structure which can realize axial positioning or release the axial positioning to the sleeve, and after the positioning structure releases the axial positioning to the corresponding sleeve, each sleeve can move axially to enable the swing connection structure to be positioned outside the sleeve, so that the handle bodies can swing relative to the connecting seat. The foldable control handle disclosed by the invention has the advantages that the control handle is convenient to fold, so that the balance bike is convenient to store when being accommodated, and can be locked firmly in a deployed or folded state, the stability is high, and the loose phenomenon is not easy to occur.
Description
Technical field
The invention belongs to electric vehicle devices technical field, especially relates to a kind of folding manipulation handle of electrodynamic balance car.
Background technology
Electrodynamic balance car, is body-sensing car, thinking car, the car that acts as regent etc. again.Mainly there are single wheel and two class of two-wheel on market.Its fortune
Make principle and be mainly built upon one kind to be referred to as in the ultimate principle of " dynamic stability ", using gyroscope and the acceleration of vehicle body
Degree sensor, detects the change of vehicle body attitude, and utilizes servo-control system, accurately motor is adjusted accordingly
Whole, to keep the balance of system.Common electrodynamic balance car is broadly divided into the electrodynamic balance car of control-rod control or by two
The electrodynamic balance swing car of pedal stand pivot joint, wherein, control rod type electrodynamic balance car is suitable for longer endurance
Longer-distance driving, so, just liked by more and more people.Common control rod type electrodynamic balance car is due to only fitting
For manual method, its manipulation handle is mostly fixed, it is impossible to fold manipulation handle, so when balance car is received
Manipulation handle can take larger space, and the thus use to electrodynamic balance car brings great inconvenience.
In order to solve the problems, such as prior art, people have carried out long-term exploration, it is proposed that solution miscellaneous
Scheme.For example, Chinese patent literature discloses the handrail foldable structure [application number of a kind of scooter or folded bicycle or balance car：
201520230317.4], including vertical rod connecting seat, and one end incision is in the sleeve of vertical rod connecting seat both sides, and through vertical rod even
Joint chair and sleeve, the latch for locking bushing, and be arranged in sleeve and the telescopic spring component through sleeve, and one end
The stretching element that incision is connected in sleeve and with telescopic spring component.
Such scheme to some extent solves the problem that existing electrodynamic balance car manipulation handle cannot be folded, but should
Scheme is still existed：Folding operation inconvenience, less stable, launch or folded state locking not enough firmly the problems such as.
Content of the invention
The purpose of the present invention is for the problems referred to above, provides a kind of simple and reasonable, can be folded and be launched or roll over
Overlapping state locks the folding manipulation handle of firm electrodynamic balance car.
For above-mentioned purpose is reached, following technical proposal is present invention employs：The folding manipulation handle of this electrodynamic balance car, bag
Include handlebody, it is characterised in that described handlebody is swung with the connecting seat being arranged in control lever by swinging attachment structure
It is connected, described swing attachment structure periphery is arranged with sleeve and the two ends of sleeve extend respectively to handlebody periphery and connecting seat
Periphery so as to prevent handlebody from swinging with respect to connecting seat, described sleeve with by sleeve axially position or axially position can be released
Location structure be connected and described sleeve after location structure is released to the axially position of sleeve can be moved axially so that putting
The structure that is dynamically connected is located at outside sleeve so that handle physical ability is swung with respect to connecting seat.By location structure, sleeve is positioned and cover
It is located at handlebody periphery and connecting seat periphery, so that handlebody cannot be swung with respect to connecting seat, when location structure will cover
Cylinder positioning lift after sleeve can be moved rearwards by, so that sleeve departs from swing attachment structure realizes handle physical ability with respect to even
Joint chair swings.
In the folding manipulation handle of above-mentioned electrodynamic balance car, tied by detachable between described sleeve and handlebody
Structure is connected.
In the folding manipulation handle of above-mentioned electrodynamic balance car, described demountable structure includes that being arranged on handlebody leans on
First thread segment of nearly connecting seat one end outer circumferential, described sleeve circumference inner side has for being meshed with the first thread segment
It is connected by screw thread between two thread segments, and described sleeve and handlebody.Using threaded so that sleeve and handlebody are solid
Fixed firm.
In the folding manipulation handle of above-mentioned electrodynamic balance car, described location structure includes to be arranged on connecting seat with set
Cylinder between and the barrier structure of sleeve axially inward movement can be prevented and be arranged between handlebody and sleeve and sleeve can be prevented
The lock control structure that axially outward movement or releasing are limited to sleeve axially outward movement.I.e. by barrier structure and lock control structure energy
Sleeve rear and front end is positioned so as to cannot move.
In the folding manipulation handle of above-mentioned electrodynamic balance car, described barrier structure includes to be sheathed on connecting seat circumference
The joint rotation angle sheath in outside, described joint rotation angle sheath external end flushed with connecting seat, and described sleeve inner end is against setting
Put in the outer end of joint rotation angle sheath；Having on the outside of described joint rotation angle sheath can be with after sleeve is with respect to connecting seat swing
The arc notch that sleeve outer circumferential matches.Abut realization by connecting seat and handle by sleeve and joint rotation angle sheath
Firmly it is connected between handss body, loosening phenomenon is less prone to, and arc notch can make handlebody fold rear stability more preferably, be difficult out
Existing shaking phenomenon.
In the folding manipulation handle of above-mentioned electrodynamic balance car, described lock control structure includes radially movable to be arranged on handle
Closing piece on handss body, be provided between described closing piece and handlebody can make closing piece project radially out on the outside of handlebody so as to sleeve
Outer end against elastic supporting member for supporting optical member.
In the folding manipulation handle of above-mentioned electrodynamic balance car, described handlebody sidepiece is radially provided with installing hole, and
Described closing piece is slidably arranged in installation in the hole, and described closing piece is inner with the limiting section for preventing closing piece from departing from installing hole, and
Described elastic supporting member for supporting optical member is arranged on installation in the hole and is leant with limiting section.Sleeve is prevented to be moved rearwards by by closing piece,
Pressing closing piece makes which realize sleeve and be moved rearwards by with flushing on the outside of handlebody.
In the folding manipulation handle of above-mentioned electrodynamic balance car, described swing attachment structure includes to be arranged on mounting seat
On hinged seat, described handlebody end is hinged and connected with hinged seat.
In the folding manipulation handle of above-mentioned electrodynamic balance car, described handlebody include to be hinged and connected with hinged seat and
Installation portion with the first thread segment, described installation portion is connected with sweeping grip part, and a connecting rod is worn respectively
In installation portion with grip part and installation portion is connected with grip part by connecting rod.
In the folding manipulation handle of above-mentioned electrodynamic balance car, described grip part includes to be connected with installation portion and along peace
Axially extending straight section portion of dress portion, described straight section portion is connected with the bending section being bent upwards, and described grip part is provided with to be covered
It is placed on whole grip part or is covered in the flexible body of grip part local.Obviously, when can make use using the grip part of this kind of form
It is easy to grip, manipulates convenient.
Compared with prior art, the advantage of the folding manipulation handle of this electrodynamic balance car is：Manipulation handle is easy to folding
Folded, so that during balance car storage, to be easy to storage, to launch or folded state locking is firm, stability is strong, is less prone to loosening
Phenomenon.
Description of the drawings
The structural representation that Fig. 1 is provided for the present invention.
The partial structural diagram of the sleeve open mode that Fig. 2 is provided for the present invention.
The partial exploded view that Fig. 3 is provided for the present invention.
In figure, handlebody 1, the first thread segment 11, the second thread segment 111, installation portion 12, grip part 13, straight section portion 131,
Bending section 132, flexible body 133, connecting rod 14, swing attachment structure 2, hinged seat 21, control lever 3, connecting seat 31, installation body
32nd, sleeve 4, location structure 5, joint rotation angle sheath 51, arc notch 52, closing piece 53, installing hole 54, limiting section 55.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As Figure 1-3, the folding manipulation handle of this electrodynamic balance car, including handlebody 1, handlebody 1 is by the company of swing
Access node structure 2 is swung with the connecting seat 31 being arranged in control lever 3 and is connected, and for example, swing attachment structure 2 here can include to set
The hinged seat 21 in mounting seat is put, 1 end of handlebody is hinged and connected with hinged seat 21, wherein, each 31 two ends of connecting seat
Handlebody 1 is respectively equipped with, and connecting seat 31 can be taken various forms with the connected mode of control lever 3, for example, manipulation here
Bar 3 is connected with installation body 32, and connecting seat 31 is arranged in installation body 32, is swung 2 periphery of attachment structure and is arranged with sleeve 4
And the two ends of sleeve 4 extend respectively to 1 periphery of handlebody and 31 periphery of connecting seat so as to prevent handlebody 1 with respect to connecting seat 31
Swing, sleeve 4 with can by 4 axially position of sleeve or release axially position location structure 5 be connected and when location structure 5 release right
The axially position after sleeve 4 of sleeve 4 can be moved axially and is located at outside sleeve 4 so that handlebody 1 can phase so that swinging attachment structure 2
Connecting seat 31 is swung, i.e., sleeve 4 is positioned by location structure 5 and is set in 1 periphery of handlebody and 31 periphery of connecting seat,
So that handlebody 1 is swung with respect to connecting seat 31, when location structure 5 can be to by 4 positioning lift after sleeve 4 of sleeve
After move so that sleeve 4 departs from and swings attachment structure 2 and realize handlebody 1 and can swing with respect to connecting seat 31.
Specifically, move axially along handlebody 1 to realize sleeve 4, using can between sleeve 4 here and handlebody 1
Detaching structure is connected, and demountable structure includes to be arranged on first thread segment of the handlebody 1 near 31 one end outer circumferential of connecting seat
11,4 circumference inner side of sleeve has the second thread segment 111 being meshed with the first thread segment 11, and between sleeve 4 and handlebody 1
It is connected by screw thread, can so causes sleeve 4 and 1 fixation of handlebody.Wherein, location structure 5 here includes to arrange
Between connecting seat 31 and sleeve 4 and the barrier structure of 4 axially inward movement of sleeve can be prevented and be arranged on handlebody 1 and sleeve
Between 4 and can prevent 4 axially outward movement of sleeve or release to 4 axially outward movement of sleeve limit lock control structure, that is, pass through
Barrier structure and lock control structure can be positioned to 4 rear and front end of sleeve so as to two-way under positioning states cannot all be moved.
When carrying out stopping positioning to 4 front of sleeve, barrier structure here can include to be sheathed on 31 circumference of connecting seat
The joint rotation angle sheath 51 in outside, under unfolded state, 51 outer end of joint rotation angle sheath is flushed with connecting seat 31, and joint rotation angle is protected
Set 51 is inner to be provided with circumferential positioning structure and installation body 32 between, by circumference between joint rotation angle sheath 51 and connecting seat 31
Positioning and slide axially connected, when 4 the inner of sleeve against be arranged on joint rotation angle sheath 51 outer end when realize joint rotation angle shield
Why sleeve 4 is connected using screw thread in the present embodiment by the positioning of set 51 with handlebody 1, be primarily due to connecting seat 31 with
Install between body 32 and the elastic construction that joint rotation angle sheath 51 can be backed down is provided with, when sleeve 4 is moved rearwards by, joint rotation angle
Sheath 51 is backed down by elastic construction, and the circumferential positioning structure between such joint rotation angle sheath 51 and connection body 32 is separated, this
Sample is realized connecting seat 31 and can be rotated 32 inner circumferential of body is installed, so as to realize the rotation of handlebody 1, when handlebody 1 is folded
When, the outside of joint rotation angle sheath 51 is had after sleeve 4 is swung with respect to connecting seat 31 and can be matched with 4 outer circumferential of sleeve
By sleeve 4 and joint rotation angle sheath 51, arc notch 52, i.e., abut that realization will be firm between connecting seat 31 and handlebody 1
It is connected, loosening phenomenon is less prone to, and arc notch 52 can make handlebody 1 fold rear stability more preferably, be less prone to and rock now
As.
When carrying out stopping positioning to 4 rear of sleeve, lock control structure here can be arranged on handle including radially movable
Closing piece 53 on body 1, be provided between closing piece 53 and handlebody 1 can make closing piece 53 project radially out the outside of handlebody 1 so as to set
4 outer ends of cylinder against elastic supporting member for supporting optical member, wherein, 1 sidepiece of handlebody here is radially provided with installing hole 54, and closing piece 53 slides and sets
Put in installing hole 54, closing piece 53 is inner to have the limiting section 55 for preventing closing piece 53 from departing from installing hole 54, and elastic supporting member for supporting optical member sets
Put in installing hole 54 and lean with limiting section 55, i.e., prevent by closing piece 53 sleeve 4 to be moved rearwards by, pressing closing piece 4 makes
1 outside flushes and realizes sleeve 4 and be moved rearwards by with handlebody for which.
In order to improve comfort level and stability when handlebody is used, handlebody 1 here includes hinged with hinged seat 21
It is connected and the installation portion 12 with the first thread segment 11, installation portion 12 is connected with sweeping grip part 13, wherein, installing hole
54 ends that can be opened in grip part 13, a connecting rod 14 is arranged in installation portion 12 and grip part 13 and installation portion respectively
12 are connected with grip part 13 by connecting rod 14, and grip part 13 here includes to be connected with installation portion 12 and along 12 axle of installation portion
To the straight section portion 131 for extending, straight section portion 131 is connected with the bending section 132 being bent upwards, and grip part 13 is provided with and is covered in entirely
Grip part 13 or be covered in the flexible body 133 of 13 local of grip part, it is clear that using this kind of form grip part 13 can use when
It is easy to grip, increases skidproof effect, manipulation feel is more preferable.
The principle of the present embodiment is：By handlebody 1 is threadeded with sleeve 4, sleeve 4 be set in handlebody 1 with
The hinged place of hinged seat 21 and sleeve 4 is resisted against on joint rotation angle sheath 51, such handlebody 1 cannot be with respect to connecting seat 2
Fold, pressing closing piece 4 makes which flush with 1 outside of handlebody, and such sleeve 4 can be circumferentially rotated and is moved rearwards by, when sleeve 4 is de-
From handlebody 1 with the hinged place of hinged seat 21 when, handlebody 1 can be folded with respect to connecting seat 2 and fold posterior joint corner sheath
Arc notch 52 on 51 is resisted against 4 outer circumferential of sleeve, realizes fixedlying positioning for folded state.
Specific embodiment described herein is only explanation for example to present invention spirit.The affiliated technology neck of the present invention
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but the spirit without departing from the present invention or surmount scope defined in appended claims.
Although more employing handlebody 1, the first thread segment 11, the second thread segment 111, installation portion 12 herein, gripping
Portion 13, straight section portion 131, bending section 132, flexible body 133, connecting rod 14, swing attachment structure 2, hinged seat 21, control lever 3, company
Joint chair 31, install body 32, sleeve 4, location structure 5, joint rotation angle sheath 51, arc notch 52, closing piece 53, installing hole 54,
55 grade term of limiting section, but the probability being not precluded from using other terms.Using these terms just for the sake of more easily
Describe and explain the essence of the present invention；Being construed as any additional restriction is disagreed with spirit of the present invention
's.
Claims (10)
1. a kind of folding of electrodynamic balance car manipulates handle, including handlebody (1), it is characterised in that described handlebody (1) leads to
Overswing is dynamically connected structure (2) and is swung with the connecting seat (31) that is arranged in control lever (3) and is connected, described swing attachment structure
(2) periphery be arranged with sleeve (4) and sleeve (4) two ends extend respectively to handlebody (1) periphery and connecting seat (31) periphery from
And prevent handlebody (1) from swinging with respect to connecting seat (31), described sleeve (4) with can be by sleeve (4) axially position or releasing
The location structure (5) of axially position is connected and described sleeve after location structure (5) releases the axially position to sleeve (4)
(4) can move axially so that swinging attachment structure (2) to be located at sleeve (4) outward so that handlebody (1) can be with respect to connecting seat
(31) swing.
2. the folding manipulation handle of electrodynamic balance car according to claim 1, it is characterised in that described sleeve (4) with
It is connected by demountable structure between handlebody (1).
3. the folding of electrodynamic balance car according to claim 2 manipulates handle, it is characterised in that described demountable structure
Including being arranged on first thread segment (11) of the handlebody (1) near connecting seat (31) one end outer circumferential, described sleeve (4) is all
There is the second thread segment (111) being meshed with the first thread segment (11), and described sleeve (4) and handlebody (1) to inner side
Between by screw thread be connected.
4. the folding of the electrodynamic balance car according to claim 1 or 2 or 3 manipulates handle, it is characterised in that described positioning
Structure (5) includes the barrier structure for being arranged between connecting seat (31) and sleeve (4) and preventing sleeve (4) axially inward movement
And be arranged between handlebody (1) and sleeve (4) and can prevent sleeve (4) axially outward movement or release to sleeve (4) axially
Move out the lock control structure of restriction.
5. the folding of electrodynamic balance car according to claim 4 manipulates handle, it is characterised in that described barrier structure bag
Include the joint rotation angle sheath (51) for being sheathed on connecting seat (31) outer circumferential, described joint rotation angle sheath (51) outer end be connected
Seat (31) is flushed, and described sleeve (4) the inner is against the outer end for being arranged on joint rotation angle sheath (51)；Described joint rotation angle
There is on the outside of sheath (51) arc that can be matched with sleeve (4) outer circumferential after sleeve (4) is swung with respect to connecting seat (31)
V notch v (52).
6. the folding of electrodynamic balance car according to claim 4 manipulates handle, it is characterised in that described lock control structure bag
The radially movable closing piece (53) being arranged on handlebody (1) is included, being provided between described closing piece (53) and handlebody (1) to make lock
Block (53) project radially out on the outside of handlebody (1) so as to sleeve (4) outer end against elastic supporting member for supporting optical member.
7. the folding of electrodynamic balance car according to claim 6 manipulates handle, it is characterised in that described handlebody (1)
Sidepiece is radially provided with installing hole (54), and described closing piece (53) is slidably arranged in installing hole (54), described closing piece (53)
Inner have the limiting section (55) for preventing closing piece (53) from departing from installing hole (54), and described elastic supporting member for supporting optical member is arranged on installing hole
(54) lean in and with limiting section (55).
8. the folding of electrodynamic balance car according to claim 3 manipulates handle, it is characterised in that described swing connection knot
Structure (2) includes the hinged seat (21) being arranged in mounting seat, and described handlebody (1) end is hinged and connected with hinged seat (21).
9. the folding of electrodynamic balance car according to claim 8 manipulates handle, it is characterised in that described handlebody (1)
Including being hinged and connected and having the installation portion (12) of the first thread segment (11) with hinged seat (21), described installation portion (12) connects
There is sweeping grip part (13), a connecting rod (14) is arranged in installation portion (12) and grip part (13) respectively and installs
Portion (12) is connected with grip part (13) by connecting rod (14).
10. the folding of electrodynamic balance car according to claim 9 manipulates handle, it is characterised in that described grip part
(13) include to be connected with installation portion (12) and along the axially extending straight section portion (131) of installation portion (12), described straight section portion (131)
The bending section (132) being bent upwards is connected with, described grip part (13) is provided with and is covered in whole grip part (13) or covers
Flexible body (133) in grip part (13) local.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784862.7A CN106428378A (en) | 2016-08-31 | 2016-08-31 | Foldable control handle of electric balance bike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784862.7A CN106428378A (en) | 2016-08-31 | 2016-08-31 | Foldable control handle of electric balance bike |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106428378A true CN106428378A (en) | 2017-02-22 |
Family
ID=58090529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610784862.7A Pending CN106428378A (en) | 2016-08-31 | 2016-08-31 | Foldable control handle of electric balance bike |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106428378A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0100960A (en) * | 2000-03-14 | 2001-10-30 | Claas Selbstfahr Erntemasch | Hydraulic actuation for a material pick-up element |
| US20020112561A1 (en) * | 2001-02-05 | 2002-08-22 | Gordon Liao | Angle adjuster for the grip of a golf cart |
| TWM261440U (en) * | 2004-06-25 | 2005-04-11 | Shen Shye Metal Mfg Co Ltd | Angle adjusting structure of bicycle handlebar |
| CN2873615Y (en) * | 2005-12-31 | 2007-02-28 | 潘梁丰 | Handle folding structure |
| TWM416592U (en) * | 2011-05-10 | 2011-11-21 | Dijiya Energy Saving Technology Inc | Folding structure for handle |
| CN203666885U (en) * | 2014-01-08 | 2014-06-25 | 索瑞·瑟布 | Scooter handlebar folding device and scooter |
| CN204197196U (en) * | 2014-09-29 | 2015-03-11 | 杭州久高科技有限公司 | A kind of collapsible handle bar structure |
| CN206087133U (en) * | 2016-08-31 | 2017-04-12 | 杭州速控软件有限公司 | Folding handle of controlling of electrodynamic balance car |
-
2016
- 2016-08-31 CN CN201610784862.7A patent/CN106428378A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0100960A (en) * | 2000-03-14 | 2001-10-30 | Claas Selbstfahr Erntemasch | Hydraulic actuation for a material pick-up element |
| US20020112561A1 (en) * | 2001-02-05 | 2002-08-22 | Gordon Liao | Angle adjuster for the grip of a golf cart |
| TWM261440U (en) * | 2004-06-25 | 2005-04-11 | Shen Shye Metal Mfg Co Ltd | Angle adjusting structure of bicycle handlebar |
| CN2873615Y (en) * | 2005-12-31 | 2007-02-28 | 潘梁丰 | Handle folding structure |
| TWM416592U (en) * | 2011-05-10 | 2011-11-21 | Dijiya Energy Saving Technology Inc | Folding structure for handle |
| CN203666885U (en) * | 2014-01-08 | 2014-06-25 | 索瑞·瑟布 | Scooter handlebar folding device and scooter |
| CN204197196U (en) * | 2014-09-29 | 2015-03-11 | 杭州久高科技有限公司 | A kind of collapsible handle bar structure |
| CN206087133U (en) * | 2016-08-31 | 2017-04-12 | 杭州速控软件有限公司 | Folding handle of controlling of electrodynamic balance car |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
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