CN110953240B - Pivot device suitable for single-hand operation - Google Patents
Pivot device suitable for single-hand operation Download PDFInfo
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- CN110953240B CN110953240B CN201911065613.2A CN201911065613A CN110953240B CN 110953240 B CN110953240 B CN 110953240B CN 201911065613 A CN201911065613 A CN 201911065613A CN 110953240 B CN110953240 B CN 110953240B
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- piece
- groove
- concave wheel
- rotating shaft
- connecting part
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
- F16C11/103—Arrangements for locking frictionally clamped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N11/00—Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricated; Grease cups
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
- G06F1/1681—Details related solely to hinges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2370/00—Apparatus relating to physics, e.g. instruments
Abstract
The invention discloses a hinge device suitable for one-hand operation, which comprises a first connecting part connected with a notebook computer body, a second connecting part connected with a display and a rotating shaft arranged between the first connecting part and the second connecting part, wherein the rotating shaft is fixedly connected with the first connecting part, the second connecting part is rotatably arranged around the rotating shaft, an adjusting component for changing the rotating torque force between the first connecting part and the rotating shaft is also arranged between the first connecting part and the rotating shaft, the opening and closing force of a notebook computer screen can be reduced by the hinge device of the invention through the adjusting component, a user can unfold the screen by one hand, and the unfolding angle of the screen can be conveniently adjusted.
Description
Technical Field
The invention relates to the field of notebook computer accessories, in particular to a hinge device suitable for single-hand operation.
Background
In the existing notebook computer, the display is connected with the notebook computer body by the rotating connecting piece, and in order to ensure that the notebook computer can keep opening and closing relatively low, a friction device or a damping device is usually arranged on the rotating connecting piece, so that the rotating connecting piece can provide enough torque to ensure that the screen of the notebook computer keeps a certain opening angle.
Therefore, the problem that the notebook computer is difficult to open is brought, and the notebook computer can be opened by two hands usually, so that the notebook computer is troublesome.
Disclosure of Invention
The invention aims to provide a hinge device which can provide opening assisting force and is suitable for one-hand operation.
In order to achieve the purpose, the invention adopts the technical scheme that: a hinge device suitable for one-hand operation comprises a first connecting part connected with a notebook computer body, a second connecting part connected with a display and a rotating shaft arranged between the first connecting part and the second connecting part, wherein the rotating shaft is fixedly connected with the first connecting part, the second connecting part is rotatably arranged around the rotating shaft, an adjusting component for changing the rotating torque between the first connecting part and the rotating shaft is further arranged between the first connecting part and the rotating shaft, the adjusting component comprises an annular first cam sheet sleeved on the rotating shaft and locked with the rotating shaft, an annular concave wheel sheet sleeved on the rotating shaft and rotated together with the second connecting part and a pressing elastic sheet component sleeved on the rotating shaft and used for pressing the first cam sheet and the concave wheel sheet, the first cam sheet and the concave wheel sheet are adjacent and abutted against each other, the surface of the first cam piece, which is abutted against the concave wheel piece, is provided with a first convex block which protrudes upwards, the surface of the concave wheel piece, which is abutted against the first cam piece, is provided with a first groove which is recessed downwards and is matched with the first convex block, and a first transition inclined plane groove and a second transition inclined plane groove which are respectively positioned at two sides of the concave wheel piece and transition from the first groove to the surface of the concave wheel piece, the first transition inclined plane groove and the second transition inclined plane groove are arc-shaped inclined grooves taking the rotating shaft as an axis, and when the opening and closing angle of the first connecting part and the second connecting part is at a set value, the first convex block is positioned in the first groove.
Preferably, when the opening and closing angle of the first connecting part and the second connecting part is between 85 degrees and 95 degrees, the first bump is positioned in the first groove.
Further preferably, when the opening and closing angle of the first connecting part and the second connecting part is between 90 °, the first protrusion is located in the first groove.
Preferably, the central angles of the first and second transitional bevel grooves are both between 80 ° and 100 °.
Preferably, the first groove, the first transitional inclined plane groove and the second transitional inclined plane groove are provided with two groups, one group is distributed close to the inner side of the concave wheel piece, the other group is distributed close to the outer side of the concave wheel piece, and two first protruding blocks on the first cam piece are correspondingly arranged.
Preferably, the adjusting assembly further comprises an annular second cam piece sleeved on the rotating shaft and locked with the rotating shaft, and the second cam piece is arranged on the other side, opposite to the first cam piece, of the concave wheel piece and is in contact with the concave wheel piece.
Further preferably, the surface of the second cam piece abutting against the concave wheel piece is provided with a second convex block protruding upwards, the surface of the concave wheel piece abutting against the second cam piece is provided with a second groove recessed downwards and matched with the second convex block, and a third transition inclined plane groove and a fourth transition inclined plane groove which are respectively located on two sides of the concave wheel piece and transition from the second groove to the surface of the concave wheel piece, the third transition inclined plane groove and the fourth transition inclined plane groove are arc inclined grooves taking the rotating shaft as an axis, and when the opening and closing angle of the first connecting portion and the second connecting portion is 0 degree, the second convex block is located in the second groove.
Further preferably, the other side of the second cam piece opposite to the concave wheel piece is provided with a U-shaped clamping piece, the outer side of the clamping piece is provided with a clamping groove, and the outer side of the second cam piece is provided with a clamping tongue clamped into the clamping groove.
Further preferably, the first cam piece and the second cam piece each move synchronously with the rotating shaft through an inner flat hole.
Further preferably, the surfaces of the first cam piece, the second cam piece, and the sheave piece are each provided with a plurality of recessed storage holes for storing lubricant.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
because the first cam piece and the concave wheel piece are pressed together by the pressing elastic piece assembly, when a notebook computer provided with the hinge device is turned over, the first convex block on the first cam is matched with the first transition inclined plane groove on the concave wheel piece, the first convex block is provided with a torsion force sliding to the bottom of the first transition inclined plane groove through the inclined plane, and the torsion force of the part is transmitted to the notebook computer screen through the first cam piece to generate an assisting force for turning over the notebook computer.
After the first bump slides to the bottom of the first transition inclined plane groove and enters the first groove, the hinge device can provide locking torque for assisting in locking the opening and closing angle of the notebook computer at the moment because the first bump is subjected to resistance from the concave wheel piece no matter the first bump has a tendency to slide towards the first transition inclined plane groove or the second transition inclined plane groove.
When the display of the notebook computer is continuously unfolded and the unfolding angle exceeds 90 degrees, the first lug slides into the second transitional inclined plane groove along with the sliding of the display, the inclined plane of the second transitional inclined plane groove provides torque for the first lug to block the first lug from continuously sliding above the second transitional inclined plane groove, and the torque is transmitted to the notebook computer screen through the hinge area and can counteract partial gravity of the screen, so that the screen is prevented from continuously sliding downwards due to self weight.
Therefore, the hinge device can reduce the opening and closing force of the screen of the notebook computer, a user can unfold the screen with one hand, and the unfolding angle of the screen can be conveniently adjusted.
Drawings
FIG. 1 is a perspective view of an embodiment;
FIG. 2 is an exploded view of the embodiment;
FIG. 3 is a perspective view of the first cam plate;
FIG. 4 is a perspective view of a second cam plate;
FIG. 5 is a schematic perspective view of the front side of a concave wheel sheet;
FIG. 6 is a perspective view of the reverse side of the concave wheel sheet.
In the above drawings: 1. a first connection portion; 2. a second connecting portion; 3. a rotating shaft; 4. a first cam piece; 41. a first bump; 5. a concave wheel sheet; 51. a first groove; 52. a first transition ramp slot; 53. a second transition ramp slot; 54. a second groove; 55. a third transition ramp slot; 56. a fourth transition ramp slot; 6. a spring plate; 7. a compression nut; 8. a second cam piece; 81. a second bump; 9. a storage hole; 10. a card.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which:
referring to fig. 1-6, a hinge device suitable for one-hand operation comprises a first connecting part 1 connected to a notebook computer body, a second connecting part 2 connected to a display, and a rotating shaft 3 disposed between the first connecting part 1 and the second connecting part 2, wherein axis of rotation 3 and first connecting portion 1 fixed connection, second connecting portion 2 revolutes axis of rotation 3 and rotates the setting, still be provided with the adjusting part who changes the rotation torsion between first connecting portion 1 and the axis of rotation 3, the adjusting part is including the annular first cam piece 4 of cover establishing on axis of rotation 3 and with axis of rotation 3 locking, the annular notch wheel piece 5 and the cover establishing on axis of rotation 3 and through pinhole fixed connection with second connecting portion 2 are used for the shell fragment subassembly that compresses tightly first cam piece 4 and notch wheel piece 5 to establish in axis of rotation 3. The first cam piece 4 and the concave wheel piece 5 are arranged adjacently and in an abutting mode, a first protruding block 41 protruding upwards is arranged on the surface, in the embodiment, of the first cam piece 4, abutting against the concave wheel piece 5, transition inclined planes are further arranged on two sides of the first protruding block 41 to reduce abrasion, a first groove 51 recessed downwards and matched with the first protruding block 41 is arranged on the surface, in the abutting mode, of the concave wheel piece 5, of the first cam piece 4, a first transition inclined plane groove 52 and a second transition inclined plane groove 53 are respectively located on two sides of the concave wheel piece and transition from the first groove 51 to the surface of the concave wheel piece, and the first transition inclined plane groove 52 and the second transition inclined plane groove 53 are circular arc-shaped inclined grooves taking the rotating shaft 3 as an axis. In this embodiment, when the opening and closing angle of the first connecting portion 1 and the second connecting portion 2 (the main body and the screen of the notebook computer) is between 90 °, the first protrusion 41 is located in the first groove 51. The central angles of the first transition ramp groove 52 and the second transition ramp groove 53 are both between 90 °.
In this embodiment, the elastic sheet 6 assembly includes a plurality of elastic sheets 6 which are sleeved on the rotating shaft 3 and are stacked, and a compression nut 7 which is arranged at the end of the rotating shaft 3 and is used for compressing the elastic sheets 6, and the stacked elastic sheets 6 are compressed by the compression nut 7 to provide elastic pressure for the hinge device.
The first groove 51, the first transitional inclined plane groove 52 and the second transitional inclined plane groove 53 are respectively provided with two groups, one group is distributed close to the inner side of the concave wheel sheet 5, the other group is distributed close to the outer side of the concave wheel sheet 5, and the first convex block 41 on the first cam sheet 4 is correspondingly provided with two blocks. Thereby reducing the moment borne by the single first bump 41 and prolonging the service life of the hinge.
The adjusting assembly further comprises an annular second cam sheet 8 which is sleeved on the rotating shaft 3 and locked with the rotating shaft 3, and the second cam sheet 8 is arranged on the other side, opposite to the first cam sheet 4, of the concave wheel sheet 5 and is abutted to the concave wheel sheet 5.
The surface of the second cam piece 8, which is in contact with the concave wheel piece 5, is provided with a second convex block 81 which protrudes upwards, the surface of the concave wheel piece 5, which is in contact with the second cam piece 8, is provided with a second groove 54 which is concave downwards and is matched with the second convex block 81, and a third transition inclined plane groove 55 and a fourth transition inclined plane groove 56 which are respectively positioned at two sides of the concave wheel piece and are in transition from the second groove 54 to the surface of the concave wheel piece, the third transition inclined plane groove 55 and the fourth transition inclined plane groove 56 are arc-shaped inclined grooves taking the rotating shaft 3 as an axis, and when the opening and closing angle of the first connecting part 1 and the second connecting part 2 is 0 degree, the second convex block 81 is positioned in the second groove 54. The third transition inclined plane groove 55 and the fourth transition inclined plane groove 56 of the present embodiment have a small circle center angle, and are usually controlled within 20 ° as required, and the second cam piece 8 is used to provide assistance for closing the screen of the notebook computer, so as to prevent the screen from being opened accidentally.
Further preferably, the second cam piece 8 is provided with a U-shaped clamping piece 10 on the other side relative to the concave wheel piece 5, a clamping groove is formed in the outer side portion of the clamping piece 10, a clamping tongue clamped into the clamping groove is formed in the outer side portion of the second cam piece 8, and the clamping piece 10 can reduce the abrasion of the second cam piece 8 and prolong the service life of the hinge device.
In the present embodiment, the first cam piece 4 and the second cam piece 8 each move in synchronization with the rotary shaft 3 through the flat hole inside. The surfaces of the first cam piece 4, the second cam piece 8 and the sheave piece 5 are each provided with a plurality of recessed reservoir holes 9 for storing lubricant.
Since the pressing spring assembly is adopted to press the first cam piece 4 and the concave wheel piece 5 together in the embodiment, when the notebook computer provided with the hinge device of the embodiment is turned over, the first convex block 41 on the first cam is matched with the first transition inclined plane groove 52 on the concave wheel piece 5, a torsion force sliding towards the bottom of the first transition inclined plane groove 52 is provided for the first convex block 41 through the inclined plane, and the torsion force of the part is transmitted to the notebook computer screen through the first cam piece 4 to generate an assistance force for turning over the notebook computer.
After the first protrusion 41 slides to the bottom of the first transitional inclined plane groove 52 and enters the first groove 51, no matter the first protrusion 41 slides to the first transitional inclined plane groove 52 or the second transitional inclined plane groove 53, the first protrusion will be subjected to the resistance from the concave wheel 5, and at this time, the hinge device can provide the locking torque force for assisting in locking the opening and closing angle of the notebook computer.
When the notebook monitor is unfolded continuously and the unfolding angle exceeds 90 °, the first protrusion 41 slides into the second transitional inclined groove 53, the inclined surface of the second transitional inclined groove 53 provides a torque force for the first protrusion 41 to prevent the first protrusion 41 from sliding above the second transitional inclined groove 53, and the torque force is transmitted to the notebook computer screen through the hinge area and can counteract the gravity of a part of the screen, so that the screen is prevented from sliding downwards continuously due to dead weight.
Therefore, the hinge device of the embodiment can reduce the opening and closing force of the screen of the notebook computer, a user can unfold the screen with one hand, and the unfolding angle of the screen can be conveniently adjusted.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a pivot ware that is fit for one-hand operation, its is in including the first connecting portion of connecting the notebook computer body, the second connecting portion of connecting the display and setting first connecting portion with axis of rotation between the second connecting portion, wherein the axis of rotation with first connecting portion fixed connection, the second connecting portion wind the axis of rotation is rotated and is set up, first connecting portion with still be provided with between the axis of rotation and change first connecting portion with the adjustment assembly of rotation torsion between the axis of rotation, its characterized in that: the adjusting component comprises an annular first cam piece, an annular concave wheel piece and a pressing spring piece component, wherein the annular first cam piece is sleeved on the rotating shaft and locked with the rotating shaft, the annular concave wheel piece is sleeved on the rotating shaft and rotates along with the second connecting part, the pressing spring piece component is sleeved on the rotating shaft and used for pressing the first cam piece and the concave wheel piece, the first cam piece and the concave wheel piece are adjacent and abutted, a first convex block which is convex upwards is arranged on the surface of the first cam piece, which is abutted against the first cam piece, a first groove which is concave downwards and matched with the first convex block is arranged on the surface of the concave wheel piece, a first transition groove and a second transition inclined groove are respectively positioned on the two sides of the concave wheel piece, the first transition groove and the second transition inclined groove are in a circular arc shape, and the inclined groove takes the rotating shaft as the shaft, when the opening and closing angle of the first connecting part and the second connecting part is at a set value, the first bump is positioned in the first groove;
the first groove, the first transition inclined plane groove and the second transition inclined plane groove are respectively provided with two groups, one group is distributed close to the inner side of the concave wheel sheet, the other group is distributed close to the outer side of the concave wheel sheet, and two first protruding blocks on the first cam sheet are correspondingly arranged.
2. A hinge device adapted to be operated by one hand according to claim 1, wherein: when the opening and closing angle of the first connecting part and the second connecting part is between 85 degrees and 95 degrees, the first bump is positioned in the first groove.
3. A hinge device adapted to be operated by one hand according to claim 1, wherein: when the opening and closing angle of the first connecting part and the second connecting part is 90 degrees, the first bump is positioned in the first groove.
4. A hinge device adapted to be operated by one hand according to claim 1, wherein: the central angles of the first transition inclined plane groove and the second transition inclined plane groove are both between 80 degrees and 100 degrees.
5. A hinge device adapted to be operated by one hand according to claim 1, wherein: the adjusting assembly further comprises an annular second cam piece which is sleeved on the rotating shaft and locked with the rotating shaft, and the second cam piece is arranged on the other side, opposite to the first cam piece, of the concave wheel piece and is in contact with the concave wheel piece.
6. A hinge device adapted to be operated by one hand according to claim 5, wherein: the surface of the second cam piece, which is abutted against the concave wheel piece, is provided with a second convex block which protrudes upwards, the surface of the concave wheel piece, which is abutted against the second cam piece, is provided with a second groove which is recessed downwards and matched with the second convex block, and a third transition inclined plane groove and a fourth transition inclined plane groove which are respectively positioned at two sides of the concave wheel piece and transition from the second groove to the surface of the concave wheel piece, the third transition inclined plane groove and the fourth transition inclined plane groove are arc-shaped inclined grooves taking the rotating shaft as an axis, and when the opening and closing angle of the first connecting part and the second connecting part is 0 degree, the second convex block is positioned in the second groove.
7. A hinge device adapted to be operated by one hand according to claim 5, wherein: the other side of the second cam piece, which is opposite to the concave wheel piece, is provided with a U-shaped clamping piece, the outer side part of the clamping piece is provided with a clamping groove, and the outer side part of the second cam piece is provided with a clamping tongue clamped into the clamping groove.
8. A hinge device adapted to be operated by one hand according to claim 5, wherein: the first cam piece and the second cam piece are both moved synchronously with the rotating shaft through the inner flat hole.
9. A hinge device adapted to be operated by one hand according to claim 5, wherein: the surfaces of the first cam piece, the second cam piece and the sheave piece are each provided with a plurality of recessed reservoir holes for storing lubricant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911065613.2A CN110953240B (en) | 2019-11-04 | 2019-11-04 | Pivot device suitable for single-hand operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911065613.2A CN110953240B (en) | 2019-11-04 | 2019-11-04 | Pivot device suitable for single-hand operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110953240A CN110953240A (en) | 2020-04-03 |
| CN110953240B true CN110953240B (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911065613.2A Active CN110953240B (en) | 2019-11-04 | 2019-11-04 | Pivot device suitable for single-hand operation |
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| Country | Link |
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| CN (1) | CN110953240B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112181053B (en) * | 2020-09-10 | 2021-07-13 | 深圳市蓝晨科技股份有限公司 | Notebook computer rotating shaft structure capable of being opened and closed by one hand |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5704094A (en) * | 1995-05-18 | 1998-01-06 | Motorola, Inc. | Electronic device having a cam assembly functioning as a depressible hinge |
| CN2821256Y (en) * | 2005-06-30 | 2006-09-27 | 新日兴股份有限公司 | Pivot device |
| CN2900903Y (en) * | 2006-03-08 | 2007-05-16 | 志精实业股份有限公司 | Pivot device |
| CN201281079Y (en) * | 2008-08-07 | 2009-07-29 | 兆利科技工业股份有限公司 | Improvement of pivotal device and setting element thereof |
| CN201705801U (en) * | 2010-03-19 | 2011-01-12 | 康准电子科技（昆山）有限公司 | Pivot device and interference assembly |
| CN202811815U (en) * | 2012-08-07 | 2013-03-20 | 苏州诚骏科技有限公司 | Pivoting device |
| CN107015600A (en) * | 2017-03-27 | 2017-08-04 | 苏州诚骏科技股份有限公司 | A kind of notebook computer pivot device |
-
2019
- 2019-11-04 CN CN201911065613.2A patent/CN110953240B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5704094A (en) * | 1995-05-18 | 1998-01-06 | Motorola, Inc. | Electronic device having a cam assembly functioning as a depressible hinge |
| CN2821256Y (en) * | 2005-06-30 | 2006-09-27 | 新日兴股份有限公司 | Pivot device |
| CN2900903Y (en) * | 2006-03-08 | 2007-05-16 | 志精实业股份有限公司 | Pivot device |
| CN201281079Y (en) * | 2008-08-07 | 2009-07-29 | 兆利科技工业股份有限公司 | Improvement of pivotal device and setting element thereof |
| CN201705801U (en) * | 2010-03-19 | 2011-01-12 | 康准电子科技（昆山）有限公司 | Pivot device and interference assembly |
| CN202811815U (en) * | 2012-08-07 | 2013-03-20 | 苏州诚骏科技有限公司 | Pivoting device |
| CN107015600A (en) * | 2017-03-27 | 2017-08-04 | 苏州诚骏科技股份有限公司 | A kind of notebook computer pivot device |
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| CN110953240A (en) | 2020-04-03 |
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