CN106507632B - Terminal and power module's supplementary mechanism of pulling out - Google Patents
Terminal and power module's supplementary mechanism of pulling out Download PDFInfo
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- CN106507632B CN106507632B CN201610939711.4A CN201610939711A CN106507632B CN 106507632 B CN106507632 B CN 106507632B CN 201610939711 A CN201610939711 A CN 201610939711A CN 106507632 B CN106507632 B CN 106507632B
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- power module
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
- H05K7/1402—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards
- H05K7/1409—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards by lever-type mechanisms
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- Microelectronics & Electronic Packaging (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention relates to a terminal and an auxiliary pulling-out mechanism of a power module, wherein the power module is inserted in a shell, the auxiliary pulling-out mechanism is connected with the power module and corresponds to the position of a plug-in opening of an insertion position, and the auxiliary pulling-out mechanism comprises a power-assisted mechanism and a pressing piece. One end of the pressing piece is connected with the power assisting mechanism, and the other end of the pressing piece faces the insertion direction of the power supply module and corresponds to the position of the shell. When the power assisting mechanism is in a first state, the power module is inserted into the insertion position, and the pressing piece is correspondingly matched with the shell; when the power-assisted mechanism is switched to the second state, the pressing piece is pressed against the shell by applying driving force in the inserting direction of the power module to the pressing piece, so that the power-assisted mechanism and the power module move outwards from the inserting and extracting port, and the power module is separated from the inserting and inserting terminal. The power assisting mechanism is switched in a specific interval, the position of the power module after being pulled out from the plug terminal is limited, the situation that the position pulled out is out of control due to inertia when the power assisting mechanism is pulled out is avoided, the injury of operating personnel is also prevented, and the pulling-out safety is improved.
Description
Technical Field
The invention relates to the field of power modules, in particular to a terminal and an auxiliary pulling-out mechanism of the power module.
Background
In the field of plug-in modules in the related art, for example, a communication power module or a charger power module, the plug-in module is usually connected to a bus bar in the form of terminals, and the terminals generally include a power input/output terminal, a communication connection terminal, and the like.
The connection mode of the plugging module can realize hot plugging of the module, is convenient for later maintenance and replacement, saves space of the cabinet and the like. In practical application, after the module is completely connected with the busbar, the module is too tightly connected with the busbar along with the increase of the number of the connecting terminals of the plug-in module and the busbar.
Two problems are easily created here: firstly, when the module is pulled out, a larger pulling force is needed, and the operation mode is inconvenient; secondly, after the module connecting terminal is separated from the busbar terminal, due to the fact that the tensile force is large, operators are easy to be injured under severe conditions due to inertia.
Disclosure of Invention
The invention aims to provide an improved terminal and an auxiliary pulling-out mechanism of a power supply module.
The technical scheme adopted by the invention for solving the technical problems is as follows: an auxiliary pulling-out mechanism of a power module is constructed, the power module is inserted in a shell, an insertion position for inserting and installing the power module is arranged on the shell, an insertion terminal for inserting and installing the power module is arranged in the insertion position, the auxiliary pulling-out mechanism is connected with the power module and corresponds to the insertion and pulling port of the insertion position, and the auxiliary pulling-out mechanism comprises a power-assisted mechanism and a pressing part;
one end of the pressing piece is connected with the power assisting mechanism, and the other end of the pressing piece faces the insertion direction of the power module and corresponds to the position of the shell;
the power assisting mechanism can be switched between a first state and a second state;
when the power assisting mechanism is in the first state, the power module is inserted into the insertion position, and the pressing piece is correspondingly matched with the shell;
when the power-assisted mechanism is switched to the second state, a driving force in the inserting direction of the power module is applied to the pressing piece, and the pressing piece presses the shell, so that the power-assisted mechanism and the power module move outwards from the plugging port, and the power module is separated from the plugging terminal.
Preferably, the power assisting mechanism comprises a driving piece which is arranged in a swinging mode, and the pressing piece is rotatably connected with one end of the driving piece;
the driving piece swings to drive the power assisting mechanism to be switched between a first state and a second state.
Preferably, the power assisting mechanism further comprises a connecting rod, the connecting rod is rotatably arranged around one end, the other end of the connecting rod is rotatably connected with the driving piece, and the connecting rod swings along with the swinging of the driving piece so as to ensure that the pressing piece is applied with the inserted driving force towards the power module.
Preferably, the auxiliary pulling-out mechanism further comprises a seat body assembled and matched with the power module; the base body is provided with a stopping part corresponding to the shell, so that after the power module is inserted into the inserting position, the stopping part and the shell are abutted to limit the inserting depth position of the power module.
Preferably, the outer end surface of the power module is flush with the outer surface of the stopper portion, and when the power assisting mechanism is in the first state, the end portion of the pressing member opposite to the housing is attached to the housing and flush with the outer surface of the stopper portion.
Preferably, a notch is formed in the side surface of the power module, the outer end of the notch faces the insertion direction, the pressing piece corresponds to the notch in position and can be clamped into the notch,
when the power assisting mechanism is in the second state, the power module is separated from the plug-in terminal, the pressing piece is clamped into the notch, and the bottom of the notch abuts against the end part of the pressing piece.
Preferably, the auxiliary extraction mechanism further comprises a limiting mechanism for limiting a transition range of the power-assisted mechanism between the first state and the second state.
Preferably, the limiting mechanism comprises a limiting protrusion, and a first abutting portion and a second abutting portion which are respectively abutted against the limiting protrusion, and when the power-assisted mechanism is in the first state and the second state, the first abutting portion and the second abutting portion are respectively abutted against the limiting protrusion to limit the position of the power-assisted mechanism in the first state and the second state.
Preferably, the auxiliary pulling-out mechanism further comprises a linkage piece, the linkage piece is arranged along the plugging-pulling direction of the power module and can move back and forth along the plugging-pulling direction of the power module, the linkage piece is rotatably connected with the driving piece, the first blocking part is arranged on the power assisting mechanism and/or the linkage piece, and the second blocking part is arranged on the linkage piece.
The invention also discloses a terminal which comprises a power module and a plug-in mounting position for the plug-in mounting of the power module, wherein the plug-in mounting position is provided with a plug-in opening, the power module is provided with the auxiliary pulling-out mechanism for pulling out the power module, and the auxiliary pulling-out mechanism corresponds to the plug-in opening of the plug-in mounting position.
The auxiliary pulling-out mechanism of the terminal and the power module has the following beneficial effects: the auxiliary pulling-out mechanism comprises a shell, a pressing piece, a power module, a plug-in terminal, a power-assisted mechanism, a power module and a power module, wherein the power module is connected with the shell through a connecting piece, the power module is connected with the plug-in terminal through a connecting piece, the power module is connected with the power module through the connecting piece, and the power module is connected with the power module.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural diagram of a power assisting mechanism of an auxiliary pulling mechanism on a terminal in a first state when a power module is inserted into a plug-in position according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the assist mechanism of the auxiliary extraction mechanism of FIG. 1 in a first state;
fig. 3 is a schematic structural diagram illustrating a power assisting mechanism of an auxiliary pulling mechanism on a terminal in an embodiment of the invention after pulling a power module in the terminal out of a plug terminal in a second state;
fig. 4 is a schematic structural view of the assist mechanism of the auxiliary pull-out mechanism in fig. 2 in a second state.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the terminal in a preferred embodiment of the present invention includes a housing 1 and a power module 2, wherein the housing 1 is provided with a plugging position 11 for plugging and mounting the power module 2, the plugging position 11 is provided with a plugging opening 12, the outer end of the power module 2 is provided with an auxiliary plugging mechanism 3 for plugging and mounting the power module 2, and the auxiliary plugging mechanism 3 is connected to the power module 2 and corresponds to the plugging opening 12 of the plugging position 11. The plug-in mounting position 11 is internally provided with a plug-in terminal 13 corresponding to the power module 2, and the power module 2 is plugged with the plug-in terminal 13 to provide electric energy for the terminal.
As shown in fig. 1 and 3, the auxiliary pulling-out mechanism 3 includes a power-assisted mechanism 31 and a pressing member 312, one end of the pressing member 312 is connected to the power-assisted mechanism 31, and the other end of the pressing member 312 is disposed toward the insertion direction of the power module 2 and corresponds to the position of the housing 1.
The power assisting mechanism 31 can be switched between the first state and the second state, and an operator can apply force to the power assisting mechanism 31 to switch the power assisting mechanism 31 between the first state and the second state.
When the power assisting mechanism 31 is in the first state, the power module 2 is inserted into the insertion position 11, and the pressing member 312 is attached to the housing 1, so that no interaction force exists between the pressing member 312 and the housing 1, and the power module 2 cannot be forced outwards, and the position is kept stable. In other embodiments, when the assisting mechanism 31 is in the first state, the pressing member 312 and the housing 1 may be in a separated state.
Further, the power module 2 can be pushed inward by the force moving toward the insertion opening 12 when the power assisting mechanism 31 is switched to the first state, so that the power module 2 is inserted into the insertion terminal 13 in the insertion position 11. Of course, the power module 2 can be plugged into the plug terminal 13 by other external forces.
When the power-assisted mechanism 31 is switched to the second state, a driving force in the insertion direction of the power module 2 is applied to the pressing member 312, and the pressing member 312 presses against the housing 1, so that the power-assisted mechanism 31 and the power module 2 move out of the insertion opening 12, and the power module 2 is separated from the plug terminal 13. The power assisting mechanism 31 is kept in the second state after the power module 2 is separated from the plug terminal 13, so that the situation that the pulled-out position is out of control due to inertia when the power module is pulled out is avoided, and the injury of an operator is also prevented.
As shown in fig. 2 and 4, in some embodiments, the power assisting mechanism 31 includes a driving member 311 and a connecting rod 313, and the auxiliary extracting mechanism 3 further includes a linking member 32. The connection rod 313 is rotatably disposed around one end, and the other end is rotatably connected to the driving member 311.
The pressing part 312 and the linkage part 32 are respectively connected with two ends of the driving part 311 in a rotating way, and the connecting position of the connecting rod 313 and the driving part 311 is positioned between the pressing part 312 and the connecting position of the linkage part 32 and the driving part 311. The pressing member 312 and the linkage member 32 are respectively connected to two ends of the driving member 311, the linkage member 32 is disposed along the inserting and extracting direction of the power module 2, and when the driving member 311 swings, the linkage member 32 moves toward the pulling direction of the power module 2.
The pressing member 312 is disposed along the inserting and extracting direction of the power module 2, and the pressing member 312 is rotatably connected to the driving member 311. The driving element 311, the pressing element 312, the connecting rod 313 and the linking element 32 are connected to form a set of link mechanism, and it can be ensured that the driving element 311 can swing, and the driving element 311 swings to drive the power assisting mechanism 31 to switch between the first state and the second state.
When the driving member 311 swings, the pressing member 312 is only applied with a force in the insertion direction of the power module 2, and the position thereof is not shifted, and the connecting rod 313 swings with the swing of the driving member 311. The connection rod 313 swings with the swing of the driving member 311 to ensure that the urging member 312 is applied with a driving force toward the insertion direction of the power module 2.
As shown in fig. 1 and fig. 3, when the driving element 311 is applied with a force, the driving element 311 swings, a force in the insertion direction of the power module 2 is applied to the pressing element 312 by the swinging of the driving element 311, the pressing element 312 presses against the housing 1, and the power assisting mechanism 31 and the power module 2 move out of the insertion opening 12 under the support of the pressing element 312.
The side of the power module 2 is provided with a notch 21 arranged from the outer end surface to the insertion direction, and the pressing piece 312 corresponds to the notch 21 and can be clamped into the notch 21. During the process of moving the power module 2 out of the insertion opening 12, the pressing element 312 is correspondingly and gradually clamped into the notch 21.
When the assist mechanism 31 is in the second state, the power module 2 is disengaged from the plug terminal 13. Further, the pressing piece 312 is clamped into the notch 21, the bottom of the notch 21 abuts against the end of the pressing piece 312, the power module 2 can be prevented from continuously moving outwards, the phenomenon that the power module 2 falls out together with an operator after being fiercely stopped due to the inertia effect when the force is too large is avoided, and accidents and injuries to the operator are prevented.
Further, the auxiliary pulling-out mechanism 3 further includes a seat 33 assembled with the power module 2, and preferably, two ends of the connecting rod 313 are rotatably connected to the seat 33 and the driving member 311, respectively. In other embodiments, the seat 33 can be omitted, so that the connecting rod 313 can be rotatably connected to the power module 2.
The seat body 33 is provided with a stopping portion 331 corresponding to the housing 1, so that after the power module 2 is inserted into the insertion position 11, the stopping portion 331 abuts against the housing 1 to limit the insertion depth position of the power module 2. The stopping portion 331 normally abuts against the outer end surface of the insertion/extraction opening 12 after the power module 2 is inserted, the abutting portion 312 is also attached to the outer end surface of the insertion/extraction opening 12 after the power module 2 is inserted, and when the power assisting mechanism 31 is switched to the second state, the abutting portion 312 does not move and directly abuts against the outer end surface of the insertion/extraction opening 12.
Preferably, the outer end surface of the power module 2 is flush with the outer surface of the stopping portion 331, after the power module 2 is inserted into the insertion position, when the assisting mechanism 31 is in the first state, the end portion of the pressing member 312 opposite to the housing 1 is attached to the housing 1 and flush with the outer surface of the stopping portion 331, that is, the end portion of the pressing member 312 opposite to the housing 1 is flush with the outer surface of the stopping portion 331, the outer end surface of the power module 2, and the outer end surface of the insertion/extraction opening 12, so that the depth of the notch 21 is not less than the extraction stroke of the power module 2, the power module 2 can be ensured to be completely extracted from the insertion terminal, and meanwhile, the moving range of the power module 2 in insertion and extraction by using the auxiliary extraction mechanism is conveniently controlled.
Preferably, in some embodiments, the housing 1 may further include a guide groove for guiding the link 32, and the guide groove may define a moving direction of the link 32. Of course, the guiding may also be performed by means of a matching structure between the link member 32 and the housing 1. When the driving member 311 swings, the link 32 moves into the insertion opening 12 or moves out of the insertion opening 12.
In other embodiments, the linkage 32 and the connection rod 313 may be eliminated, so that the driving member 311 is directly connected to the power module 2 in a rotating manner, and drives the pressing member 312 to apply force during swinging. One of the linkage 32 and the connecting rod 313 can be retained, and the pressing part 312 can be applied with force to be supported on the shell 1 to drive the power module 2 to be pulled out.
In some embodiments, the auxiliary extracting mechanism 3 further includes a limiting mechanism 34 defining a transition section of the assisting mechanism 31 between the first state and the second state, and the limiting mechanism 34 can allow the linkage 32 to move in a specific section, thereby defining the transition section of the assisting mechanism 31. The transition section defined by the limiting mechanism 34 corresponds to the position section after the power module 2 is mounted and pulled out, so as to limit the position of the power module 2 after mounting and pulling out.
Further, the limiting mechanism 34 includes a limiting protrusion 341, and a first abutting portion 314 and a second abutting portion 321 that respectively correspond to the limiting protrusion 341 and abut against each other, and when the power-assisted mechanism 31 is in the first state and the second state, the first abutting portion 314 and the second abutting portion 321 respectively abut against the limiting protrusion 341 to limit the position of the power-assisted mechanism 31 in the first state and the second state.
In some embodiments, the first abutting portion 314 is disposed on the driving member 311, and the second abutting portion 321 is disposed on the linkage member 32, in other embodiments, the first abutting portion 314 may also be disposed on the linkage member 32, or disposed on both the power assisting mechanism 31 and the linkage member 32.
Further, the second stopping portion 321 is a hook or a hanging table corresponding to the limiting protrusion 341, and when the linkage member 32 moves to the second position, the hook or the hanging table is hung on the limiting protrusion 341 to stop and limit. Preferably, the first abutting portion 314 and the second abutting portion 321 are located on the opposite side of the abutting member 312, and the second abutting portion 321 may have outward inertia when swinging, so as to be capable of abutting and matching with the limiting protrusion 341.
In other embodiments, the first abutting portion 314 and the second abutting portion 321 may be eliminated, a sliding groove sleeved on the limiting protrusion 341 is disposed on the linking member 32, and two ends of the sliding groove respectively abut against the limiting protrusion 341 to limit the positions of the boosting mechanism 31 in the first state and the second state.
It is to be understood that the above-described respective technical features may be used in any combination without limitation.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An auxiliary pulling-out mechanism of a power module is characterized in that the power module (2) is inserted into a shell (1), an insertion position (11) for inserting and installing the power module (2) is arranged on the shell (1), an insertion terminal (13) for inserting and installing the power module (2) is arranged in the insertion position (11), the auxiliary pulling-out mechanism (3) is located at an insertion and pulling opening (12) of the insertion position (11) and connected with the power module (2), and the auxiliary pulling-out mechanism (3) comprises a power-assisted mechanism (31) and a pressing part (312);
the power assisting mechanism (31) comprises a driving piece (311) and a connecting rod (313), the driving piece (311) is arranged in a swinging mode, the connecting rod (313) is rotatably connected with the driving piece (311), the pressing piece (312) is rotatably connected with one end of the driving piece (311) to form a connecting rod mechanism, one end of the connecting rod (313) is rotatably matched with the shell (1), and the connecting rod (313) swings along with the swinging of the driving piece (311) to support the driving piece (311);
one end of the pressing piece (312) is connected with the power-assisted mechanism (31), and the other end of the pressing piece faces the insertion direction of the power module (2) and corresponds to the position of the shell (1);
the driving piece (311) swings inwards and outwards towards the plugging port (12) to drive the power-assisted mechanism (31) to be switched between a first state and a second state;
when the power assisting mechanism (31) is in the first state, the power module (2) is inserted into the insertion position (11), and the pressing piece (312) is abutted against or spaced from the shell (1);
when the power-assisted mechanism (31) is switched to the second state, the driving piece (311) swings outwards to apply a driving force to the pressing piece (312) in the inserting direction of the power module (2), and the pressing piece (312) presses the shell (1) so that the power-assisted mechanism (31) and the power module (2) move outwards to the inserting and extracting opening (12) and the power module (2) is separated from the inserting and extracting terminal (13).
2. The auxiliary pulling-out mechanism of a power module as claimed in claim 1, wherein the auxiliary pulling-out mechanism (3) further comprises a seat body (33) assembled and matched with the power module (2); the base body (33) is provided with a stopping part (331) corresponding to the shell (1), so that after the power module (2) is inserted into the inserting position (11), the stopping part (331) abuts against the shell (1) to limit the inserting depth position of the power module (2).
3. The auxiliary pulling-out mechanism of a power module as claimed in claim 2, wherein the outer end surface of the power module (2) is flush with the outer surface of the stopping portion (331), and when the assisting mechanism (31) is in the first state, the end of the pressing member (312) opposite to the housing (1) is attached to the housing (1) and flush with the outer surface of the stopping portion (331).
4. Auxiliary pulling mechanism for power module according to any of claims 1 to 3, characterized in that the side of the power module (2) is provided with a notch (21) facing the insertion direction from the outer end, the pressing member (312) is corresponding to the notch (21) and can be snapped into the notch (21),
when the power assisting mechanism (31) is in the second state, the power module (2) is separated from the plug-in terminal (13), the pressing piece (312) is clamped into the notch (21), and the bottom of the notch (21) is pressed against the end part of the pressing piece (312).
5. The auxiliary extraction mechanism of a power module according to claim 4, characterized in that the auxiliary extraction mechanism (3) further comprises a limiting mechanism (34) defining a transition interval of the power-assisted mechanism (31) between the first state and the second state.
6. The auxiliary pulling-out mechanism of a power module as claimed in claim 5, wherein the limiting mechanism (34) comprises a limiting protrusion (341) and a first abutting portion (314) and a second abutting portion (321) that respectively abut against the limiting protrusion (341), and when the power-assisted mechanism (31) is in the first state and the second state, the first abutting portion (314) and the second abutting portion (321) respectively abut against the limiting protrusion (341) to limit the position of the power-assisted mechanism (31) in the first state and the second state.
7. The auxiliary pulling-out mechanism of a power module as claimed in claim 6, wherein the auxiliary pulling-out mechanism (3) further comprises a linkage member (32), the linkage member (32) is disposed along the plugging-pulling direction of the power module (2) and can move back and forth along the plugging-pulling direction of the power module (2), the linkage member (32) is rotatably connected to the driving member (311), the first abutting portion (314) is disposed on the boosting mechanism (31) and/or the linkage member (32), and the second abutting portion (321) is disposed on the linkage member (32).
8. The terminal is characterized by comprising a power module (2) and a plug-in mounting position (11) for plug-in mounting of the power module (2), wherein a plug-in opening (12) is formed in the plug-in mounting position (11), the power module (2) is provided with the auxiliary pulling-out mechanism (3) which is used for pulling out the power module (2) and is provided with any one of claims 1 to 7, and the auxiliary pulling-out mechanism (3) corresponds to the plug-in opening (12) of the plug-in mounting position (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610939711.4A CN106507632B (en) | 2016-11-01 | 2016-11-01 | Terminal and power module's supplementary mechanism of pulling out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610939711.4A CN106507632B (en) | 2016-11-01 | 2016-11-01 | Terminal and power module's supplementary mechanism of pulling out |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106507632A CN106507632A (en) | 2017-03-15 |
| CN106507632B true CN106507632B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610939711.4A Active CN106507632B (en) | 2016-11-01 | 2016-11-01 | Terminal and power module's supplementary mechanism of pulling out |
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| Country | Link |
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| CN (1) | CN106507632B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379873A (en) * | 2018-12-05 | 2019-02-22 | 国核自仪系统工程有限公司 | Insertion and ejecting mechanism and printed board insertion and liftout attachment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2956790B1 (en) * | 2010-02-24 | 2013-12-20 | Airbus Operations Sas | ELECTRONIC CARD BASE AND ASSOCIATED EXTRACTION DEVICE |
| JP2011222730A (en) * | 2010-04-09 | 2011-11-04 | Sony Corp | Detachment structure of electronic equipment unit, electronic equipment unit, power supply unit, and electronic unit device |
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| JP2003152358A (en) * | 2001-11-13 | 2003-05-23 | Mitsubishi Electric Corp | Insertion/drawing mechanism of plug-in unit |
| CN1735324A (en) * | 2004-07-20 | 2006-02-15 | 株式会社优伯 | Board unit |
| CN101128099A (en) * | 2006-08-18 | 2008-02-20 | 富士通株式会社 | Piu plug-in/plug-off mechanism for electronic apparatus |
| CN102083288A (en) * | 2010-12-09 | 2011-06-01 | 中国航空工业集团公司第六三一研究所 | LRM (Line Replaceable Module) module locking and plugging device |
| WO2013185492A1 (en) * | 2012-06-13 | 2013-12-19 | 华为技术有限公司 | Removal device |
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| Publication number | Publication date |
|---|---|
| CN106507632A (en) | 2017-03-15 |
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