CN110611219B - Linkage mechanism module and expansion seat - Google Patents
Linkage mechanism module and expansion seat Download PDFInfo
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- CN110611219B CN110611219B CN201810618104.7A CN201810618104A CN110611219B CN 110611219 B CN110611219 B CN 110611219B CN 201810618104 A CN201810618104 A CN 201810618104A CN 110611219 B CN110611219 B CN 110611219B
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- piece
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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Abstract
The invention provides a linkage mechanism module and an expansion seat, the expansion seat comprises a shell and the linkage mechanism module, the linkage mechanism module is arranged on the shell, the linkage mechanism module is provided with a switch, a clamping hook piece, a linkage structure and a propping piece, the linkage mechanism is respectively connected with the switch, the clamping hook piece and the propping piece, when the expansion seat is in the clamping hook state, the switch is positioned at a first position, the clamping hook piece is positioned at a clamping position, at least one propping piece is positioned at a sinking position, when the switch is pressed to a second position to enable the expansion seat to enter the propping state, the linkage structure and the clamping hook piece are synchronously dragged, and after the clamping hook piece rotates to an unlocking position, the linkage structure is dragged to drive the propping piece to ascend from the sinking position to a lifting position.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a linkage mechanism module and an expansion base, and more particularly, to an expansion base electrically connected to an electronic device, wherein the expansion base includes the linkage mechanism module to lift the electronic device.
[ background of the invention ]
The portable electronic device is light and thin, so that the electronic device has limited electric connectors (such as a USB female connector), a user can selectively set the portable electronic device on an expansion seat and electrically connect with the expansion seat, the expansion seat has various electric connectors, the user can plug an external electronic device (such as a USB flash drive) on the expansion seat, and the portable electronic device can read information of the external electronic device through the expansion seat.
However, the conventional docking station is tightly connected to the docking station when being connected to the portable electronic device, and the portable electronic device is light and thin, so that the portable electronic device is not easily detached from the docking station in a direct taking manner because no proper force application point is provided in the process of separating the portable electronic device from the docking station.
Therefore, there is a need for a novel docking station including a structure that allows the portable electronic device to be quickly detached from the docking station.
[ summary of the invention ]
In order to achieve the above object, the present invention provides a linkage mechanism module and an expansion base, wherein the expansion base has the linkage mechanism module, and the expansion base can repeatedly hook and lift an electronic device between a hook state and a lifting state through the linkage mechanism module.
The invention discloses a linkage mechanism module which is used for an expansion seat. The hook member hooks the electronic device in the hook state, the abutting member lifts the electronic device in the lifting state, the linkage structure is connected with the switch and the hook member, the abutting member is connected with the linkage structure, the switch is used for driving the linkage structure to release the hook member to release the hook state, and driving the linkage structure to push the abutting member to enter the lifting state.
The linkage structure has a driving member, a first shaft, a driven member and a second shaft. The first shaft rod is respectively connected with the switch and the driving piece, and the second shaft rod is used for fixing the driven piece. When the switch, the first shaft rod and the driving member rotate synchronously and enter the lifting state from the hook state, the driving member is linked with the driven member to enable the second shaft rod to rotate.
The linkage structure is provided with a fixed seat arranged in a shell, the first shaft lever and the second shaft lever are substantially parallel to each other and are respectively and rotatably pivoted on the single fixed seat, the abutting piece is fixed on the second shaft lever, and when the abutting piece, the second shaft lever and the driven piece synchronously rotate and enter the clamping hook state from the jacking state, the driven piece releases the driving piece to allow the first shaft lever to rotate.
The linkage structure further comprises a first elastic member and a second elastic member. The first elastic member provides a first elastic restoring force to make the driving member rotate toward the hook state. The second elastic piece provides a second elastic restoring force to enable the propping piece to rotate towards the propping state.
The invention relates to an expansion seat which is suitable for repeatedly clamping and lifting an electronic device between a clamping state and a lifting state. The linkage mechanism module is arranged on the shell and is provided with a switch, a clamping hook piece, a linkage structure and a propping piece. When the switch is in the trip state, the switch is in a first position, the trip piece is in a buckle position, the at least one propping piece is in a sinking position, and when the switch is pressed to a second position to enter the jacking state, the linkage structure and the trip piece are synchronously dragged, and after the trip piece rotates to a releasing position, the linkage structure is dragged to drive the at least one propping piece to be lifted from the sinking position to a lifting position.
The shell is provided with a first surface, a first opening and at least one second opening, when the clamping hook piece is located at the buckling position, the clamping hook piece protrudes out of the first opening and hooks the electronic device, when the clamping hook piece is located at the unlocking position, the clamping hook piece rotates to be located in the first opening, the at least one abutting piece is lifted to the lifting position and protrudes out of the at least one second opening so as to push the electronic device away from the first surface.
The linkage structure comprises a fixing base, a driving member, a first shaft rod, a second shaft rod and a driven member. The fixing seat is arranged on the shell. The driving piece is provided with a first end part and a second end part, the second end part is opposite to the first end part, and the first end part is connected with the clamping hook piece. The first shaft lever is rotatably disposed on the fixing seat and is connected to the switch and the second end of the driving member respectively. The second shaft rod is rotatably arranged on the fixed seat. The driven part is provided with a third end part and a fourth end part, the fourth end part is opposite to the third end part, and the fourth end part is connected with the second shaft rod. The supporting member has a fifth end and a sixth end, the sixth end is opposite to the fifth end, the fifth end is connected with the second shaft rod, the sixth end supports the electronic device, when the switch is located at the first position, the hook member is located at the buckle position, the second end of the driving member supports against the third end of the driven member, the at least one supporting member is located at the sinking position, when the switch is pressed to the second position, the first shaft rod rotates along with the first shaft rod to drive the driving member to rotate, the first end is far away from the third end, the third end rotates together with the fourth end, the second shaft rod rotates and drives the at least one supporting member to rotate, and the supporting member is lifted from the sinking position to the lifting position.
The linkage structure is also provided with a first elastic piece and a second elastic piece, the first elastic piece is sleeved on the first shaft lever, and the first elastic piece is connected between the clamping hook piece and the fixed seat, the second elastic element is connected between the at least one first hook part and the fifth end part of the fixed seat, when the clamping hook element is positioned at the tripping position, the first elastic member provides a first elastic restoring force, when the second end of the driving member abuts against the third end of the driven member, the first elastic restoring force pushes the hook member to the buckling position, and the at least one propping member is located at the sinking position, the fifth end part is far away from the fixed seat, so that the second elastic piece is stretched to generate a second elastic restoring force, when the second shaft rod rotates, the second elastic restoring force provided by the second elastic member lifts the propping member from the sinking position P3 to the lifting position.
The driven member further has a recessed portion connected between the third end portion and the fourth end portion, when the hook member is located at the releasing position, the second end portion abuts against the recessed portion, and the fifth end portion is close to the at least one first hook portion.
The shell is provided with a second surface, the second surface is opposite to the first surface, a plurality of bulges are formed on the second surface, the fixed seat is provided with a third surface, and the third surface is connected with the bulges, so that the fixed seat is positioned below the second surface at intervals.
In order to make the aforementioned objects, features and advantages more comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
Fig. 1 is a schematic perspective view of an expansion base in a hook state according to an embodiment of the present invention.
Fig. 2 is another perspective view of the docking station in a hooked state according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of the linking mechanism module in a hooked state according to an embodiment of the present invention.
Fig. 4 is a partial sectional view of the linking mechanism module in a hooked state according to an embodiment of the present invention.
Fig. 5 is a schematic perspective view of the linking mechanism module in an unlocking state according to an embodiment of the present invention.
Fig. 6 is a partial cross-sectional view of the linkage module in an unlocked state according to an embodiment of the present invention.
[ detailed description ] embodiments
As shown in fig. 1 and 2, an expansion base 1 of the present invention has a linkage module 2 and a housing 3. The interlocking mechanism module 2 is disposed on the housing 3. When an electronic device is assembled with the shell 3, the interlocking mechanism module 2 can repeatedly clamp and lift the electronic device between a clamping state and a lifting state. The detailed structure and relative relationship of the elements will be described in detail below.
Referring to fig. 3 and 4, the linking mechanism module 2 has a hook 21, a propping member 22, a switch 23 and a linking structure 24. In the present embodiment, the hook member 21 is in a hook shape, the propping member 22 has a swinging member 221 and a propping unit 222 (in the present embodiment, the swinging member 221 is a metal member, and the propping unit 222 is a plastic member), wherein the swinging member 221 has a fifth end 2211 and a sixth end 2212, the propping unit 222 is connected to the sixth end 2212, and the propping unit 222 is in a triangular prism shape. The linking structure 24 has a driving member 241, a first shaft 242, a driven member 243, a second shaft 244, a fixing seat 245, a first elastic member 246 and a second elastic member 247. The driving member 241 is shaped to emit light (ㄣ), and the driving member 241 has a first end 2411 and a second end 2412, wherein the first end 2411 is opposite to the second end 2412. The follower 243 is substantially U-shaped and has a third end 2431, a fourth end 2432 and a recess 2433, and the third end 2431 and the fourth end 2432 extend from two sides of the recess 2433. The fixing base 245 has a third surface 2451 and a fourth surface 2452, a plurality of first platforms 248 and a plurality of second platforms 249 are disposed on the third surface 2451, two first hooks 2453 are formed on the fourth surface 2452, and each first hook 2453 is opposite to the fifth end 2211. In the embodiment, the first elastic member 246 is a torsion spring, and each of the second elastic members 247 is a tension spring.
The hook member 21 is disposed on the first end 2411 of the driving member 241. After the first shaft 242 is rotatably disposed through each of the first platforms 248, two ends of the first shaft 242 are respectively connected to the switch 23 and the first end 2411 of the driving member 241. The driven member 243 is correspondingly adjacent to the driving member 241, and the driven member 243 can selectively interfere with the driving member 241. The second shaft 244 is rotatably disposed on each second platform 249 to be substantially parallel to the first shaft 242, a central portion of the second shaft 244 is connected to the fourth end 2432 of the driven member 243, and two ends of the second shaft 244 are connected to the fifth ends 2211 of the swinging members 221, respectively. One end of the first elastic member 246 is engaged with one of the first platforms 248, and the other end of the first elastic member 246 is disposed on the first end 2411 of the driving member 241. The other end of the second elastic member 247 is hooked to the first hook 2453 of the fixing base 245, and the other end of the second elastic member 247 is hooked to the fifth end 2211.
As shown in fig. 1 and 2, the housing 3 has a first surface 31 and a second surface 33, and the first surface 31 is opposite to the second surface 33. A shielding portion 32 is formed on the first surface 31, located at the center of the first surface 31, and defines a first opening 321, an opening direction D1 of the first opening 321 is substantially perpendicular to a normal direction V of the first surface 31. Two second openings 311 are formed on the first surface 31, and the first opening 321 is located between the second openings 311. An opening direction D2 of each second opening 311 is parallel to the normal direction V of the first surface 31. As shown in fig. 2, the second surface 33 has a plurality of protrusions 331 thereunder, and each protrusion 331 has a height higher than each first platform 248 and each second platform 249, so that the third surface 2451 of the fixing seat 245 can be connected with the protrusions 331, so that part of the components of the linkage mechanism module 2 is covered by the housing 3.
Referring to fig. 3 and 4, when the docking station 1 is in a hooked state, the electronic device is disposed on the first surface 31 (not shown), the switch 23 is located at a first position P1, and the switch 23 protrudes from the first surface 31. The hook member 21 is located at a locking position P2, that is, the hook member 21 extends from the first opening 321 and hooks on the electronic device, and since the hook member 21 extends forward toward the first opening 321 and the first elastic member 246 is not pressed, an elastic restoring force of the first elastic member 246 is at a minimum. The second end 2412 of the driving member 241 presses the third end 2431 of the driven member 243 to make the distance between the fifth end 2211 of the swinging member 221 and the first hook 2453 farthest, so as to stretch the second elastic member 247, when the second elastic member 247 is in the hook state, the second elastic restoring force generated is the largest, and the abutting member 22 is located at a sinking position P3, that is, the abutting unit 222 is located below the first surface 31.
Fig. 5 and fig. 6 show that when the dock 1 is in the raised state and the dock 1 is about to enter a raised state from the hooking state (the state of fig. 4 is changed to the state of fig. 6), the push switch 23 moves from the first position P1 to the second position P4, so that the switch 23 is located under the first surface 31 to drive the first shaft 242 to rotate, and then the first shaft 242 drives the driving member 241 to rotate until the second end 2412 of the driving member 241 is located in the recessed portion 2433, the hooking member 21 is driven by the driving member 241 to be located at an unlocking position P5 and hidden in the shielding portion 32, and thus the electronic device is unlocked from the hooking relationship with the hooking member 21, and the first elastic member 246 is twisted due to the movement of the hooking member 21 to generate a first elastic restoring force. The driven member 243 is not pressed by the driving member 241 to rotate, so as to drive the second shaft 244 to rotate, the second shaft 244 drives the swinging member 221 to rotate, at this time, the second elastic member 247 provides a second elastic restoring force to move the abutting member 22 from the sinking position P3 to the lifting position P6, that is, the abutting unit 222 extends from the second opening 311 to be located on the first surface 31 and abuts against the electronic device to be lifted to a certain height, so that the docking station 1 is completely located in the lifting state, in this state, the distance between the fifth end 2211 and the first hook 2453 is minimum, the force provided by the second elastic member 247 is also minimum, the first elastic force provided by the first elastic member 246 is maximum, and in the lifting state, the user can easily extend into the gap between the electronic device and the first surface 31 to separate the electronic device and the docking station 1.
When the dock 1 is about to enter the hook state again from the top-up state (from the state of fig. 6 to the state of fig. 4), the switch 23 moves from the second position P4 to the first position P1, at this time, the first shaft 242 rotates again, the first elastic member 246 provides the first elastic restoring force to provide the force to move the hook member 21 from the trip position P5 to the hook position, the second end 2412 of the driving member 241 moves from the recess 2433 to the third end 2431 of the pressing follower 243, the follower 243 rotates to drive the top 22 to move from the top-up position P6 to the recess position P3, the fifth end 2211 is away from the first hook 2453, and the second elastic member 247 is stretched again to generate the maximum second elastic restoring force to provide the force to enable the top 22 to enter the top-up state again, which is not described herein again.
It should be noted that, when the first elastic element 246 is disposed on the driving element 241 and one of the first platforms 248, and the second elastic element 247 is disposed between the fifth end 2211 and the first hook 2453, the first elastic element 246 and the second elastic element 247 are pre-twisted or pre-tensioned to a certain extent, so as to ensure that the first elastic element 246 and the second elastic element 247 are not loosened by other elements when the first elastic element 246 and the second elastic element 247 are not twisted or stretched. And it is emphasized that the first elastic restoring force provided by the first elastic member 246 is the greatest before the dock 1 enters the hooking state (in the lifted state), so that the first elastic member 246 provides a force to move the hooking member 21 from the unlocking position P5 to the hooking position. Before the docking station 1 enters the raised state (in the hooked state), the elastic restoring force provided by the second elastic member 247 is the greatest, so that the second elastic member 247 provides a force to make the propping member 22 enter the raised position P6 from the sinking position P3.
In summary, the assembly process of the linkage mechanism module can be effectively simplified by disposing all the components of the linkage mechanism module on the fixing base and then further combining with the housing 3. And through the propping of the propping piece 22, the electronic device can be conveniently combined with and separated from the expansion seat, and the operation of the user is more convenient.
The above-mentioned embodiments are only used to illustrate the implementation of the present invention and to explain the technical features of the present invention, and are not used to limit the protection scope of the present invention. Any modifications or equivalent arrangements which may occur to those skilled in the art and which fall within the spirit and scope of the appended claims should be construed as limited only by the scope of the claims.
Claims (9)
1. A linkage mechanism module for an expansion seat, the expansion seat being adapted to repeatedly engage and lift an electronic device between an engaged state and a lifted state, the linkage mechanism module comprising:
a hook member for hooking the electronic device in the hooked state;
a propping piece for propping up the electronic device under the jacking state; and
a linkage structure connected with the switch and the hook piece, and the propping piece is connected with the linkage structure;
a switch for driving the linkage structure to release the hook member to release the hook state and driving the linkage structure to push up the abutting member to enter the lifting state;
wherein, this interlock structure has:
a driving member;
the first shaft lever is respectively connected with the switch and the driving piece;
a driven member; and
the second shaft lever is used for fixing the driven piece;
when the switch, the first shaft rod and the driving member rotate synchronously and enter the lifting state from the hook state, the driving member is linked with the driven member to enable the second shaft rod to rotate.
2. The interlocking mechanism module of claim 1, wherein the interlocking structure further comprises:
the first shaft lever and the second shaft lever are substantially parallel to each other and are respectively and rotatably pivoted on the single fixing seat, the abutting piece is fixed on the second shaft lever, and when the abutting piece, the second shaft lever and the driven piece synchronously rotate and enter the clamping hook state from the jacking state, the driven piece releases the driving piece to allow the first shaft lever to rotate.
3. The linkage mechanism module according to claim 2, wherein the linkage structure further comprises:
a first elastic member providing a first elastic restoring force to rotate the driving member toward the hook state; and
a second elastic member providing a second elastic restoring force to make the propping member rotate towards the propping state.
4. An docking station adapted to repeatedly engage and lift an electronic device between an engaged state and a lifted state, the docking station comprising:
a housing;
a linkage mechanism module disposed in the housing, the linkage mechanism module having:
a switch;
a hook member;
a linkage structure connected with the switch and the hook piece; and
a propping piece connected with the linkage structure;
when the switch is pressed to a second position to enter the lifting state, the linkage structure and the hook piece are synchronously pulled, and after the hook piece rotates to a releasing position, the linkage structure is pulled to drive at least one of the ejection pieces to be lifted from the sinking position to a lifting position;
wherein, this interlock structure has:
a driving member;
the first shaft lever is respectively connected with the switch and the driving piece;
a driven member; and
the second shaft lever is used for fixing the driven piece;
when the switch, the first shaft rod and the driving member rotate synchronously and enter the lifting state from the hook state, the driving member is linked with the driven member to enable the second shaft rod to rotate.
5. The docking station as claimed in claim 4, wherein the housing has a first surface, a first opening and at least a second opening, when the hook member is located at the locking position, the hook member protrudes out of the first opening and hooks onto the electronic device, when the hook member is located at the unlocking position, the hook member rotates to be located in the first opening, and the at least one of the supporting members is lifted to the lifting position and protrudes out of the at least a second opening to push the electronic device away from the first surface.
6. The docking station as claimed in claim 5, wherein the linkage structure further comprises:
a fixed seat arranged on the shell; wherein the content of the first and second substances,
the driving piece is provided with a first end part and a second end part, the second end part is opposite to the first end part, and the first end part is connected with the clamping hook piece;
the first shaft lever is rotatably arranged on the fixed seat and is respectively connected with the switch and the second end part of the driving piece;
the second shaft rod is rotatably arranged on the fixed seat;
the driven piece is provided with a third end part and a fourth end part, the fourth end part is opposite to the third end part, the fourth end part is connected with the second shaft rod,
the supporting member has a fifth end and a sixth end, the sixth end is opposite to the fifth end, the fifth end is connected to the second shaft, the sixth end supports the electronic device, when the switch is located at the first position, the hook member is located at the buckle position, the second end of the driving member supports against the third end of the driven member, at least one supporting member is located at the sinking position, when the switch is pressed to the second position, the first shaft rotates along with the first shaft to drive the driving member to rotate, the first end is far away from the third end, the third end rotates together with the fourth end, the second shaft rotates and drives at least one supporting member to rotate, and the supporting member is lifted from the sinking position to the lifting position.
7. The docking station as claimed in claim 6, wherein the linking structure further comprises a first elastic member and a second elastic member, the first elastic piece is sleeved on the first shaft lever and is connected between the clamping hook piece and the fixed seat, the second elastic element is connected between the at least one first hook part and the fifth end part of the fixed seat, when the clamping hook element is positioned at the tripping position, the first elastic member provides a first elastic restoring force, when the second end of the driving member abuts against the third end of the driven member, the first elastic restoring force pushes the clamping hook piece to the buckling position, and at least one propping piece is positioned at the sinking position, the fifth end part is far away from the fixed seat, so that the second elastic piece is stretched to generate a second elastic restoring force, when the second shaft rod rotates, the second elastic restoring force provided by the second elastic piece enables the propping piece to be lifted from the sinking position to the lifting position.
8. The dock of claim 7, wherein the follower further has a recess connected between the third end and the fourth end, when the hook member is at the release position, the second end abuts against the recess, and the fifth end is close to the at least one first hook.
9. The docking station as claimed in claim 8, wherein the housing has a second surface opposite to the first surface, the second surface has a plurality of protrusions formed thereon, and the fixing base has a third surface connected to the protrusions such that the fixing base is spaced below the second surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810618104.7A CN110611219B (en) | 2018-06-15 | 2018-06-15 | Linkage mechanism module and expansion seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810618104.7A CN110611219B (en) | 2018-06-15 | 2018-06-15 | Linkage mechanism module and expansion seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110611219A CN110611219A (en) | 2019-12-24 |
| CN110611219B true CN110611219B (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810618104.7A Active CN110611219B (en) | 2018-06-15 | 2018-06-15 | Linkage mechanism module and expansion seat |
Country Status (1)
| Country | Link |
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| CN (1) | CN110611219B (en) |
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| CN1940810A (en) * | 2005-09-30 | 2007-04-04 | 鸿富锦精密工业（深圳）有限公司 | Expanding duck clutch of portable computer |
| CN101276236A (en) * | 2007-03-30 | 2008-10-01 | 华硕电脑股份有限公司 | Electronic device bearing seat |
| CN102073339A (en) * | 2009-11-23 | 2011-05-25 | 英业达股份有限公司 | Docking station |
| CN103579847A (en) * | 2012-07-30 | 2014-02-12 | 和硕联合科技股份有限公司 | Expansion seat |
| CN104317356A (en) * | 2014-03-19 | 2015-01-28 | 宏碁股份有限公司 | Expansion base |
| EP2866120A1 (en) * | 2013-10-28 | 2015-04-29 | Acco Brands Corporation | Portable electronic device case, folio, and dock |
| JP2016167181A (en) * | 2015-03-10 | 2016-09-15 | レノボ・シンガポール・プライベート・リミテッド | Docking device and information apparatus system |
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2018
- 2018-06-15 CN CN201810618104.7A patent/CN110611219B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1940810A (en) * | 2005-09-30 | 2007-04-04 | 鸿富锦精密工业（深圳）有限公司 | Expanding duck clutch of portable computer |
| CN101276236A (en) * | 2007-03-30 | 2008-10-01 | 华硕电脑股份有限公司 | Electronic device bearing seat |
| CN102073339A (en) * | 2009-11-23 | 2011-05-25 | 英业达股份有限公司 | Docking station |
| CN103579847A (en) * | 2012-07-30 | 2014-02-12 | 和硕联合科技股份有限公司 | Expansion seat |
| EP2866120A1 (en) * | 2013-10-28 | 2015-04-29 | Acco Brands Corporation | Portable electronic device case, folio, and dock |
| CN104317356A (en) * | 2014-03-19 | 2015-01-28 | 宏碁股份有限公司 | Expansion base |
| JP2016167181A (en) * | 2015-03-10 | 2016-09-15 | レノボ・シンガポール・プライベート・リミテッド | Docking device and information apparatus system |
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|---|---|
| CN110611219A (en) | 2019-12-24 |
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