CN112636037A - Printed circuit board - Google Patents
Printed circuit board Download PDFInfo
- Publication number
- CN112636037A CN112636037A CN202110253224.3A CN202110253224A CN112636037A CN 112636037 A CN112636037 A CN 112636037A CN 202110253224 A CN202110253224 A CN 202110253224A CN 112636037 A CN112636037 A CN 112636037A
- Authority
- CN
- China
- Prior art keywords
- clamping plate
- circuit board
- pcb
- connector
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
-
- 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
- H01R13/02—Contact members
- H01R13/193—Means for increasing contact pressure at the end of engagement of coupling part, e.g. zero insertion force or no friction
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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
- H01R13/46—Bases; Cases
- H01R13/516—Means for holding or embracing insulating body, e.g. casing, hoods
Abstract
The invention discloses a printed circuit board, which comprises a top clamping plate, a bottom clamping plate and an adapter plate, wherein the top clamping plate is fixedly arranged on one side of the adapter plate, the bottom clamping plate is fixedly arranged on the opposite side of the top clamping plate, and the adapter plate is provided with a hollow top clamping plate which is fixedly connected with the bottom clamping plate; the adapter plate is provided with a hole, and the top clamping plate and the bottom clamping plate are mutually matched and clamped on the pcb through the hole; a hole is formed in the corner of the pcb; the adapter plate is arranged between the top clamping plate and the bottom clamping plate; be provided with the J30J connector on the pcb circuit board, the one side of pcb circuit board edge A is kept away from in the opening to the setting of J30J connector, and the first joint of adapter plate mutually supports with the J30J connector on the pcb circuit board, and the contralateral of the first joint of adapter plate still is equipped with the second and connects, and the second connects the edge that is located the pcb circuit board. The reinforcing component is arranged at the interface, so that the main board can be effectively protected, and the main board is prevented from being damaged due to uneven stress.
Description
Technical Field
The invention relates to the technical field of printed circuit boards and military industry, in particular to a printed circuit board.
Background
The edge of mainboard is set up to the interface among the prior art, the mode that is connected with external plug, because the interface of mainboard is the position of deciding the interface by the shape of equipment, when the position of interface is not reserved to equipment, it can only set up the inside at the mainboard to reserve the interface, just so has very big risk, makes the mainboard take place to destroy to lead to mainboard stop work, will lead to serious consequence like this.
Disclosure of Invention
The present invention is directed to a printed circuit board and a method for using the same in wartime, and aims to solve the problem that an interface is easily damaged when the interface is disposed at the edge of a motherboard under a shock load.
The invention is realized by the following technical scheme:
a printed circuit board comprises a pcb circuit board,
the PCB is characterized by also comprising an adapter plate, wherein the PCB circuit board and the adapter plate are both PCB boards;
the pcb circuit board is provided with a hole, the adapter plate is embedded into the hole, an adapter assembly is arranged on the adapter plate, and the adapter assembly is used for connecting a signal connector on the pcb circuit board with an external plug in a guiding mode.
Further, the signal connector is a J30J connector arranged on the pcb, the J30J connector is arranged on one side of the hole far away from the edge a of the pcb, and the edge a is a side edge corresponding to the insertion direction of the external plug;
the adapter assembly comprises a first connector and a second connector which are arranged on an adapter plate, and the first connector and the second connector are electrically connected through a printed circuit in the adapter plate;
a first connector is plugged with a J30J connector, the second connector is located at the edge of the interposer, and the second connector falls inside the pcb circuit board.
Furthermore, the pcb circuit board and the adapter plate are combined together by welding or gluing or clamping or clipping.
Furthermore, when the pcb circuit board and the adapter plate are combined together by clamping, a top clamping plate and a bottom clamping plate are also included;
the top clamping plate is arranged on one side of the adapter plate and the pcb, and the bottom clamping plate is arranged on the other side of the adapter plate and the pcb; the top clamping plate is provided with a screw hole, the bottom clamping plate is provided with a screw hole corresponding to the top clamping plate, the adapter plate is provided with a screw hole, and the top clamping plate, the adapter plate, the pcb circuit board and the bottom clamping plate are fixed through screws inserted into the screw holes;
the adapter plate is arranged between the top clamping plate and the bottom clamping plate.
Furthermore, polytetrafluoroethylene films are placed on the contact surfaces of the top clamping plate and the bottom clamping plate and the pcb, and the top clamping plate and the bottom clamping plate are fixed from the front side of the pcb by adopting three M2 multiplied by 8 combined screws.
Further, the top clamping plate comprises two I-shaped structures and two strip-shaped structures, and the strip-shaped structures are arranged at the edges of the grooves of the I-shaped structures; wherein the I-shaped structure and the strip-shaped structure are integrally formed.
Furthermore, a groove is formed in the side wall of the I-shaped structure; wherein an interface on the pcb is embedded into the recess.
Furthermore, an irregular cavity is formed in the middle of the bottom clamping plate, and the irregular cavity is matched with a welding spot on the adapter plate.
The size of the standby plate is consistent with that of the adapter plate, the opening in the standby plate is consistent with that of the adapter plate, two buckles are arranged on the standby plate, an external plug is fixed on the standby plate through the two buckles, and the external plug is matched with the J30J connector;
the top clamping plate is arranged on one side of the adapter plate, the bottom clamping plate is fixedly arranged on the opposite side of the top clamping plate, and the adapter plate is provided with a cavity; the top clamping plate is fixedly connected with the bottom clamping plate; the pcb circuit board is provided with a hole, and the top clamping plate and the bottom clamping plate are matched with each other and clamped on the pcb circuit board through the hole.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the printed circuit board, the reinforcing component is arranged at the interface, so that the main board can be effectively protected, and the main board is prevented from being damaged due to uneven stress;
2. the printed circuit board is provided with the standby board, and when the adapter board is damaged, the standby board can be replaced in time, so that the corresponding equipment can work normally quickly and conveniently, and the delay of the battle condition is effectively avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of a top clamping plate structure according to the present invention;
FIG. 2 is a schematic view of the bottom clamping plate structure of the present invention;
FIG. 3 is a front view of an adapter plate of the present invention;
FIG. 4 is a front view of a standby plate of the present invention;
FIG. 5 is a front view of a pcb circuit board of the present invention;
fig. 6 is a schematic view of the pcb of the present invention in a bottom view and a fixing manner.
Reference numbers and corresponding part names in the drawings:
1-top clamping plate; 11-a bar structure; 12-an I-shaped structure;
2-buckling;
3-bottom splint;
4-irregular voids;
5-a patch panel;
6-standby plate;
7-pcb circuit board;
an 8-J30J connector;
9-a first joint;
10-second linker.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Referring to fig. 1, 2, 3, 4, 5 and 6, a printed circuit board includes a pcb circuit board 7,
the PCB is characterized by also comprising an adapter plate 5, wherein the PCB circuit board 7 and the adapter plate 5 are both PCB boards;
the pcb circuit board 7 is provided with a hole, the adapter plate 5 is embedded into the hole, the adapter plate 5 is provided with an adapter assembly, and the adapter assembly is used for connecting a signal connector on the pcb circuit board 7 with an external plug.
Further, the signal connector is a J30J connector 8 disposed on the pcb 7, the J30J connector 8 is disposed on a side of the opening away from an edge a of the pcb 7, the edge a is a side corresponding to an insertion direction of the external plug;
the adapter assembly comprises a first connector 9 and a second connector 10 which are arranged on the adapter plate 5, wherein the first connector 9 and the second connector 10 are electrically connected through a printed circuit in the adapter plate 5;
the first connector 9 is connected with the plug of the J30J connector 8, the second connector 10 is located at the edge of the adapter board 5, and the second connector 10 falls into the pcb 7.
Furthermore, the pcb 7 and the interposer 5 are combined together by welding, gluing, clamping or clipping.
Preferably, when the pcb circuit board 7 and the adapter plate 5 are combined together by clamping, the pcb circuit board further comprises a top clamping plate 1 and a bottom clamping plate 3;
the top clamping plate 1 is arranged on one side of the adapter plate 5 and the pcb circuit board 7, and the bottom clamping plate 3 is arranged on the other side of the adapter plate 5 and the pcb circuit board 7; the top clamping plate 1 is provided with a screw hole, the bottom clamping plate 3 is provided with a screw hole corresponding to the top clamping plate 1, the adapter plate 5 is provided with a screw hole, and the top clamping plate 1, the adapter plate 5, the pcb circuit board 7 and the bottom clamping plate 3 are fixed through screws inserted into the screw holes;
the adapter plate 5 is arranged between the top clamping plate 1 and the bottom clamping plate 3.
The invention is used for military equipment such as airplanes, tanks and the like which belong to high-vibration military equipment, so that the requirement on the vibration resistance of a pcb (printed circuit board) is high, the damage of a mainboard caused by vibration is avoided, and the mainboard is more stable in a clamping mode, so that the mainboard is safer.
Further, the connection structure is integrally moved to the inside of the pcb circuit board 7, so that the way of locally stressing the edge of the pcb circuit board 7 is changed into the way of integrally stressing the pcb circuit board 7.
It can be understood that the pcb circuit board 7 is used for communication work on airplanes, tanks and the like, so that equipment corresponding to the pcb circuit board 7 can vibrate violently, and the interface is placed on the edge of the pcb circuit board 7 by adopting a general design, stress concentration can cause damage of the pcb circuit board 7, so that the pcb circuit board 7 cannot work. The invention also forms a sandwich structure under the combined action of the adapter plate 5, the top clamping plate 1 and the bottom clamping plate 3, thereby improving the integrity of the two plate bodies. Can effectually protect pcb circuit board 7 like this, avoid pcb circuit board 7 to take place to destroy because the atress is inhomogeneous, adopt such connected mode to make the atress disperse to whole pcb circuit board 7 on, the effectual strategy delay of having avoided leading to because pcb circuit board 7's damage has improved pcb circuit board 7's steadiness like this.
With reference to fig. 3, the interposer 5 is a 4-layer board, the thickness of the interposer 5 is 2.0mm, the board of the interposer 5 is FR-4, the surface bonding pad of the interposer 5 is formed by a tin spraying process, and the through holes of the interposer 5 are filled with oil.
It can be understood that the interposer 5 is a 4-layer board to increase the strength of the interposer 5 and reduce the damage rate of the interposer 5, and the board thickness of the interposer 5 is 2.0mm to match the thickness of the pcb 7.
With reference to fig. 1, the contact surfaces of the top board 1, the bottom board 3 and the pcb 7 are all placed with teflon films, and the top board 1 and the bottom board 3 are fixed from the front of the pcb 7 by three M2 × 8 combination screws.
Further, the mode that adopts the screw to fix from the pcb circuit board 7 front is preferably the point is glued fixedly, what the point was adopted is that the loctite 242 screw thread is glued.
Furthermore, a teflon film is used as a protective layer of the pcb 7, and an M2 × 8 combination screw is used for assembly, so as to facilitate disassembly.
Further, the thickness of the top splint 1 is 9.2mm, and the material adopted by the top splint 1 is aluminum material.
Preferably, aluminum is used for weight consideration, the density of aluminum is small, so that the load is effectively reduced, and the thickness is 9.2mm, which is the size of a space for placing the pcb 7 as a device.
Further, the top splint 1 comprises an i-shaped structure 12 and two strip-shaped structures 11, wherein the strip-shaped structures 11 are arranged at the edge of a groove of the i-shaped structure 12; wherein the i-shaped structure 12 and the bar-shaped structure 11 are integrally formed.
Furthermore, an integrally formed structure is adopted, so that the stress is more uniform, and the top clamping plate 1 is more firm.
Further, a groove is formed in the side wall of the i-shaped structure 12; wherein the interface on the pcb circuit board 7 is embedded in the recess.
It will be appreciated that the side walls of the i-shaped structure 12 are recessed to provide a connection path for the first connector 9 and the J30J connector 8 to mate with each other.
With reference to fig. 3, an irregular cavity 4 is formed in the middle of the bottom plate 3, and the irregular cavity 4 is matched with a solder joint on the adapter plate 5.
It will be appreciated that the irregular holes 4 are provided to avoid solder joints behind the interposer 5, thereby preventing solder joints from being damaged and causing the interposer 5 to become non-functional.
With continuing reference to fig. 4, a standby board 6 is also included,
the size of the standby board 6 is consistent with that of the adapter board 5, the opening of the standby board 6 is consistent with that of the adapter board 5, two buckles 2 are arranged on the standby board 6, an external plug is fixed on the standby board 6 through the two buckles 2, and the external plug is matched with the J30J connector 8;
the top clamping plate 1 is installed on one side of the adapter plate 5, the bottom clamping plate 3 is fixedly installed on the opposite side of the top clamping plate 1, and the adapter plate 5 is provided with a cavity; the top clamping plate 1 is fixedly connected with the bottom clamping plate 3; the pcb circuit board 7 is provided with a hole, and the top clamping plate 1 and the bottom clamping plate 3 are matched with each other and clamped on the pcb circuit board 7 through the hole.
It can be understood that in the actual operation process, if military signal transmission equipment is damaged, unforeseeable consequences can be brought, so that a standby plate 6 is further arranged, when the adapter plate 5 is damaged, the standby plate 6 can be replaced timely, the corresponding equipment can work normally quickly and conveniently, and the delay of the battle condition is effectively avoided.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating the position relationship of the interposer 5, the J30J connector 8, the first connector 9, and the second connector 10 on the pcb 7.
In the input/output dual interface method for a printed circuit board according to the embodiment of the present invention, the input/output dual interface method for a printed circuit board may specifically include the following steps S21-S24.
Step S21, in a normal state, the top clamping plate 1 and the bottom clamping plate 3 clamp the adapter plate 5 and the pcb circuit board 7, and the adapter plate 5 and the pcb circuit board 7 are on the same plane; wherein the transition is provided with a first joint 9 and a second joint 10.
In step S22, the first connector 9 of the interposer 5 is mated with the J30J connector 8 on the pcb 7, so as to lead the J30J connector 8 on the pcb 7 to the edge of the pcb 7.
And step S23, when the adapter plate 5 is damaged, detaching the top clamping plate 1 and the bottom clamping plate 3, taking out the adapter plate 5, mounting the standby plate 6, and clamping the standby plate 6 and the pcb 7 through the top clamping plate 1 and the bottom clamping plate 3.
In step S24, when the standby board 6 is connected, an external plug is fixed on the standby board 6 by two snaps 2 and the external plug is connected with the J30J connector 8 on the pcb circuit board 7.
It can be understood that when the adapter board 5 is damaged, the standby board 6 can be replaced in time when the above-mentioned steps S21-S24 are performed, so that the result of military signal transmission delay is effectively avoided, and the efficiency of signal transmission is improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A printed circuit board comprises a pcb (7) and is characterized by also comprising an adapter plate (5);
the hole is formed in the pcb circuit board (7), the adapter plate (5) is embedded into the hole, an adapter assembly is arranged on the adapter plate (5), and the adapter assembly is used for connecting a signal connector on the pcb circuit board (7) with an external plug.
2. A printed circuit board according to claim 1,
the signal connector is a J30J connector (8) arranged on the pcb (7), the J30J connector (8) is arranged on one side of the hole far away from the edge A of the pcb (7), and the edge A is a side edge corresponding to the insertion direction of an external plug;
the adapter assembly comprises a first connector (9) and a second connector (10) which are arranged on an adapter plate (5), wherein the first connector (9) and the second connector (10) are electrically connected through a printed circuit inside the adapter plate (5);
the first connector (9) is connected with a plug of a J30J connector (8), the second connector (10) is located at the edge of the adapter plate (5), and the second connector (10) falls into the pcb circuit board (7).
3. A printed circuit board according to claim 1, characterized in that the pcb (7) and the interposer (5) are combined by soldering or gluing or snapping or clipping.
4. A printed circuit board according to claim 3, characterized in that the pcb (7) and the interposer (5) when combined together by means of clamping, further comprise a top clamping plate (1) and a bottom clamping plate (3);
the top clamping plate (1) is installed on one side of the adapter plate (5) and the pcb circuit board (7), and the bottom clamping plate (3) is installed on the other side of the adapter plate (5) and the pcb circuit board (7); the top clamping plate (1) is provided with a screw hole, the bottom clamping plate (3) is provided with a screw hole corresponding to the top clamping plate (1), the adapter plate (5) is provided with a screw hole, and the top clamping plate (1), the adapter plate (5), the pcb circuit board (7) and the bottom clamping plate (3) are fixed through screws inserted into the screw holes;
the adapter plate (5) is arranged between the top clamping plate (1) and the bottom clamping plate (3).
5. A printed circuit board according to claim 4, characterized in that the contact surfaces of the top clamping plate (1), the bottom clamping plate (3) and the pcb (7) are all provided with Teflon film, and the top clamping plate (1) and the bottom clamping plate (3) are fixed from the front side of the pcb (7) by three M2 x 8 combined screws.
6. A printed circuit board according to claim 5, characterized in that the top clamping plate (1) comprises an I-shaped structure (12) and two strip-shaped structures (11), the strip-shaped structures (11) are arranged at the edge of the groove of the I-shaped structure (12); wherein the I-shaped structure (12) and the strip-shaped structure (11) are integrally formed.
7. A printed circuit board according to claim 6, characterized in that the side wall of the I-shaped structure (12) is provided with a groove; wherein an interface on the pcb circuit board (7) is embedded in the recess.
8. A printed circuit board according to claim 4, characterized in that the bottom plate (3) has an irregular hollow (4) formed in the middle thereof, and the irregular hollow (4) is matched with the solder joint of the interposer (5).
9. A printed circuit board according to claim 1, further comprising a standby board (6), wherein the size of the standby board (6) is the same as that of the patch panel (5), the opening of the standby board (6) is the same as that of the patch panel (5), two buckles (2) are arranged on the standby board (6), an external plug is fixed on the standby board (6) through the two buckles (2), and the external plug is matched with the J30J connector (8);
the top clamping plate (1) is installed on one side of the adapter plate (5), the bottom clamping plate (3) is fixedly installed on the opposite side of the top clamping plate (1), and the adapter plate (5) is provided with a cavity; wherein the top splint (1) is fixedly connected with the bottom splint (3); the hole has been seted up on pcb circuit board (7), top splint (1) with bottom splint (3) match each other and pass through the hole closes the clamp and is in on pcb circuit board (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110253224.3A CN112636037B (en) | 2021-03-09 | 2021-03-09 | Printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110253224.3A CN112636037B (en) | 2021-03-09 | 2021-03-09 | Printed circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112636037A true CN112636037A (en) | 2021-04-09 |
| CN112636037B CN112636037B (en) | 2021-06-08 |
Family
ID=75297591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110253224.3A Active CN112636037B (en) | 2021-03-09 | 2021-03-09 | Printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112636037B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4423294A (en) * | 1982-06-17 | 1983-12-27 | The Hall Company | Laminate switch assembly having improved durability |
| CN202230471U (en) * | 2011-10-12 | 2012-05-23 | 浪潮电子信息产业股份有限公司 | Adapter test device for non-standard SATA (Serial Advanced Technology Attachment) interface and standard SATA interface |
| CN204116387U (en) * | 2014-09-16 | 2015-01-21 | 冀雅(廊坊)电子有限公司 | A kind of LCD module short circuit test adapter |
| CN205987553U (en) * | 2016-08-25 | 2017-02-22 | 睿芯信息科技（上海）有限公司 | Embedded but expander circuit board |
| CN210294443U (en) * | 2019-06-14 | 2020-04-10 | 苏州华兴源创科技股份有限公司 | Switching device for signal conduction |
| CN211046939U (en) * | 2019-12-30 | 2020-07-17 | 上海移远通信科技有限公司 | Communication module testing device |
| CN211785661U (en) * | 2020-01-06 | 2020-10-27 | 韦森特(东莞)科技技术有限公司 | Detachable quantum dot material test fixture |
-
2021
- 2021-03-09 CN CN202110253224.3A patent/CN112636037B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4423294A (en) * | 1982-06-17 | 1983-12-27 | The Hall Company | Laminate switch assembly having improved durability |
| CN202230471U (en) * | 2011-10-12 | 2012-05-23 | 浪潮电子信息产业股份有限公司 | Adapter test device for non-standard SATA (Serial Advanced Technology Attachment) interface and standard SATA interface |
| CN204116387U (en) * | 2014-09-16 | 2015-01-21 | 冀雅(廊坊)电子有限公司 | A kind of LCD module short circuit test adapter |
| CN205987553U (en) * | 2016-08-25 | 2017-02-22 | 睿芯信息科技（上海）有限公司 | Embedded but expander circuit board |
| CN210294443U (en) * | 2019-06-14 | 2020-04-10 | 苏州华兴源创科技股份有限公司 | Switching device for signal conduction |
| CN211046939U (en) * | 2019-12-30 | 2020-07-17 | 上海移远通信科技有限公司 | Communication module testing device |
| CN211785661U (en) * | 2020-01-06 | 2020-10-27 | 韦森特(东莞)科技技术有限公司 | Detachable quantum dot material test fixture |
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| Publication number | Publication date |
|---|---|
| CN112636037B (en) | 2021-06-08 |
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