CN212391358U - Circuit board hardness detects uses extrusion device - Google Patents
Circuit board hardness detects uses extrusion device Download PDFInfo
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- CN212391358U CN212391358U CN202021016672.9U CN202021016672U CN212391358U CN 212391358 U CN212391358 U CN 212391358U CN 202021016672 U CN202021016672 U CN 202021016672U CN 212391358 U CN212391358 U CN 212391358U
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Abstract
The utility model relates to the technical field of circuit board production, in particular to an extrusion device for detecting the hardness of a circuit board, which comprises a box body, wherein supporting legs are fixedly arranged at four corners of the bottom end of the box body, a first chute is longitudinally arranged at the middle part of the bottom wall of the box body, a first slide block matched with the first chute is movably arranged in the first chute, a bottom plate is fixedly arranged at the top end of the first slide block, stand columns are fixedly arranged at the left side and the right side of the bottom wall of the box body, and moving grooves are arranged at the opposite sides of the two stand columns, so that the utility model can stably clamp circuit boards with different thicknesses and widths, avoid the circuit board from shaking in the detection process, ensure that the detection result is more accurate, and can switch the detection part of the circuit board, meet the detection requirement, and ensure that the extrusion process of the hardness detector to the, is worthy of popularization and application.
Description
Technical Field
The utility model relates to a circuit board production technical field especially relates to a circuit board hardness detects uses extrusion device.
Background
The circuit board is named as a ceramic circuit board, an alumina ceramic circuit board, an aluminum nitride ceramic circuit board, a PCB board, an aluminum substrate, a high-frequency board, a thick copper board, an impedance board, a PCB, an ultra-thin circuit board, a printed (copper etching technology) circuit board and the like. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electric appliance layout.
Need carry out the hardness to it in the production process of circuit board and detect, there is the fixed unstable condition to the circuit board when current hardness detects with extrusion device to the circuit board, lead to appearing the circuit board and rock or remove and lead to the data of surveying inaccurate in carrying out the testing process, and when the hardness of other positions of needs to the circuit board is tested, be not convenient for carry out the switching of test site, influence going on of testing process, for this reason we propose a circuit board hardness detect with extrusion device and solve this type of problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an extrusion device for detecting the hardness of a circuit board.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an extrusion device for detecting the hardness of a circuit board is designed, and comprises a box body, wherein supporting legs are fixedly mounted at four corners of the bottom end of the box body, a first chute is longitudinally formed in the middle of the bottom wall of the box body, a first sliding block matched with the first chute is movably mounted in the first chute, a bottom plate is fixedly mounted at the top end of the first sliding block, vertical columns are fixedly mounted at the left side and the right side of the bottom wall of the box body, moving grooves are formed in opposite sides of the two vertical columns, a lead screw is longitudinally and movably mounted in the moving grooves, a moving block is sleeved on the outer portion of the lead screw in a threaded manner and connected with the bottom plate through a connecting plate, the rear end of the lead screw penetrates through the box body to extend to the outer portion of the box body, a gear is fixedly mounted on the lower portion of the rear side, the middle part of the worm is fixedly sleeved with a first bevel gear, the rear side of the box body is fixedly provided with a first motor above the worm, an output shaft of the first motor is fixedly provided with a second bevel gear meshed with the first bevel gear, the top end of the bottom plate is transversely provided with a second chute, the inside of the second chute is movably provided with a second slider, the top end of the second slider is fixedly provided with a top plate, the top end of the top plate is transversely provided with a fixed groove, the inside of the fixed groove is transversely fixedly provided with a slide bar, the left side and the right side of the slide bar are movably sleeved with an installation block, the left side and the right side of the slide bar are sleeved with springs, the two ends of each spring are respectively fixedly connected with the installation block and the groove wall, the top end of the installation block is fixedly provided with a clamping plate, the top end of the clamping plate is vertically connected with an, a movable groove is longitudinally formed in the lower portion of the right side of the box body, a movable block matched with the movable groove is movably mounted in the movable groove, an electric telescopic rod is transversely and fixedly inserted in the middle of the movable block, the left end of the electric telescopic rod is fixedly connected with the middle of the right side of the top plate, a placing plate is fixedly mounted on the top wall of the box body, a placing groove is transversely formed in the bottom end of the placing plate, a threaded rod is transversely and movably mounted in the placing groove through a pair of bearings, connecting blocks are respectively sleeved on the left side and the right side of the threaded rod in a threaded manner, a second motor is fixedly mounted on the upper portion of the right side of the box body through a motor shell, an output shaft of the second motor penetrates through the placing groove and is fixedly connected with the right end of the threaded rod, a first connecting seat is fixedly mounted at the bottom end of each connecting block, the bottom end of the second connecting seat is fixedly provided with a hardness detector, and the upper part of the left side of the box body is provided with a display.
Preferably, the inner walls of the left side and the right side of the box body are vertically provided with limit grooves, limit blocks matched with the limit grooves are movably mounted in the limit grooves, and the limit blocks are connected with the hardness detector through limit rods.
Preferably, the equal vertical fixed mounting in the left and right sides on roof top has the backup pad, the upper portion fixed mounting of backup pad and the relative one side of splint has the third connecting seat, the middle part swing joint of third connecting seat has the ejector pin, splint and the relative one side top-down equidistance of backup pad are equipped with the fixed slot, the inside of fixed slot is extended into with the adjacent one end of fixed slot to the ejector pin.
Preferably, a reinforcing rod is fixedly mounted on the inner side of the clamping plate, and the bottom end of the reinforcing rod is fixedly connected to the top end of the mounting block.
Preferably, the inner side of the clamping plate and the bottom end of the pressing plate are both provided with rubber pads.
The utility model provides a pair of circuit board hardness detects uses extrusion device, beneficial effect lies in:
1. the utility model can move a pair of clamping plates away from each other by pulling the clamping plates, the clamping plates drive the mounting blocks to move along with the clamping plates to compress the springs to deform the springs to generate acting force, the circuit board is placed between the two clamping plates, when the clamping plates are loosened, the springs lose the limit release acting force to drive the mounting blocks to move along with the clamping plates, the two mounting blocks move close to each other to clamp the left side and the right side of the circuit board, the space between the clamping plates can be adjusted to fix the circuit boards with different widths, the adjusting rod is rotated to drive the pressing plate to descend to extrude the top end of the circuit board to fix the circuit board in the clamping plates, the descending distance of the pressing plate can be adjusted to fix the top end of the circuit boards with different thicknesses, and the circuit board can be fixed more stably by fixing the left side, the ejector rod can be rotated around the third connecting seat until one end of the ejector rod, which is far away from the third connecting seat, is inserted into the fixing groove to limit the position of the clamping plates, so that the space between the two clamping plates is prevented from being enlarged, and the clamping of the circuit board is more stable;
2. the utility model discloses a start the second motor and make its output shaft rotate and drive the threaded rod and rotate and thereby drive the motion that a pair of connecting block is close to each other and thereby through first connecting seat, connecting rod and second connecting seat drive hardness detector descend and extrude the circuit board and realize the hardness test, drive gag lever post and stopper and move along the spacing groove along with it when the hardness detector descends, make the process when the hardness detector descends more steady through the cooperation of gag lever post and stopper and spacing groove, make the process of extruding the circuit board more steady, thereby make the testing result more accurate, the hardness numerical value of accessible display reading detection;
3. the utility model discloses a start first motor and make its output shaft corotation drive the second bevel gear and rotate and then drive first bevel gear and rotate and realize the rotation of worm, the worm drives a pair of gear rotation thereby realize the rotation of a pair of lead screw, the lead screw drives the movable block rearward movement thereby drive the bottom plate through the link plate and move backward, can start first motor and make its output shaft reversal realize the forward movement of bottom plate, realize the adjustment to the fore-and-aft direction of circuit board detection department, can start electric telescopic handle and make its extension or shorten and drive the roof and carry out side-to-side movement, realize the left and right adjustment to circuit board detection department, make it to be convenient for adjust the detection department of circuit board and satisfy the detection needs;
the utility model discloses the centre gripping all can be stabilized to the circuit board of different thickness and width, has avoided the testing process in the circuit board to appear rocking for the testing result is more accurate, and can switch the detection department of circuit board, makes and satisfies the detection demand, and the hardness detector is stable to the extrusion process of circuit board, makes the testing result more accurate, is worth promoting and using.
Drawings
Fig. 1 is a schematic structural view of an extruding device for detecting the hardness of a circuit board according to the present invention;
fig. 2 is a schematic view of a top cross-sectional structure of an extrusion device for detecting the hardness of a circuit board according to the present invention;
fig. 3 is a schematic view of a back structure of an extrusion device for detecting circuit board hardness according to the present invention;
fig. 4 is an enlarged schematic structural view of fig. 1A according to the present invention;
fig. 5 is the utility model provides a circuit board hardness detects uses extrusion device structure schematic diagram from the right side.
In the figure: the device comprises a box body 1, a first sliding block 2, a bottom plate 3, a stand column 4, a screw rod 5, a moving block 6, a connecting plate 7, a gear 8, a limiting plate 9, a worm 10, a first bevel gear 11, a first motor 12, a second bevel gear 13, a second sliding block 14, a top plate 15, a sliding rod 16, an installation block 17, a spring 18, a clamping plate 19, an adjusting rod 20, a pressing plate 21, a movable groove 22, a movable block 23, an electric telescopic rod 24, a placing plate 25, a threaded rod 26, a connecting block 27, a second motor 28, a connecting rod 29, a second connecting seat 30, a hardness detector 31, a display 32, a limiting block 33, a limiting rod 34, a supporting plate 35, a third connecting seat 36, a top rod 37, a fixing groove 38, a reinforcing rod 39.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-5, an extrusion device for detecting the hardness of a circuit board comprises a box body 1, wherein supporting legs are fixedly arranged at four corners of the bottom end of the box body 1, a first chute is longitudinally formed in the middle of the bottom wall of the box body 1, a first sliding block 2 matched with the first chute is movably arranged in the first chute, a bottom plate 3 is fixedly arranged at the top end of the first sliding block 2, vertical columns 4 are fixedly arranged at the left side and the right side of the bottom wall of the box body 1, moving grooves are formed in the opposite sides of the two vertical columns 4, a screw rod 5 is movably arranged in the moving grooves in the longitudinal direction, a moving block 6 is sleeved on the outer thread of the screw rod 5, the moving block 6 is connected with the bottom plate 3 through a connecting plate 7, the rear end of the screw rod 5 penetrates through the box body 1 to extend to the outer portion of the box body to be fixedly provided with, a first bevel gear 11 is fixedly sleeved in the middle of the worm 10, a first motor 12 is fixedly installed on the rear side of the box body 1 and above the worm 10, a second bevel gear 13 meshed with the first bevel gear 11 is fixedly installed on an output shaft of the first motor 12, a second sliding groove is transversely formed in the top end of the bottom plate 3, a second sliding block 14 is movably installed in the second sliding groove, a top plate 15 is fixedly installed at the top end of the second sliding block 14, a fixing groove is transversely formed in the top end of the top plate 15, a sliding rod 16 is transversely and fixedly installed in the fixing groove, installation blocks 17 are movably sleeved on the left side and the right side of the sliding rod 16, springs 18 are sleeved on the left side and the right side of the sliding rod 16, two ends of each spring 18 are respectively and fixedly connected with the installation block 17 and a groove wall, a clamping plate 19 is fixedly installed on the top end of the installation block 17, a reinforcing, the circuit board receives the extrusion of top when carrying out the hardness test, transmits its decurrent power to, and the circuit board transmits power to splint 19, provides the support through stiffener 39 to splint 19 and makes the clamping-plate 19 support power that the circuit board provided stronger for the test procedure is more stable.
Equal vertical fixed mounting in the left and right sides on roof 15 top has backup pad 35, the upper portion fixed mounting of backup pad 35 and the relative one side of splint 19 has third connecting seat 36, the middle part swing joint of third connecting seat 36 has ejector pin 37, splint 19 is equipped with fixed slot 38 with the relative one side top-down equidistance of backup pad 35, ejector pin 37 extends into the inside of fixed slot 38 with the adjacent one end of fixed slot 38, make splint 19 can not be to the direction motion that is close to backup pad 35 in inserting the fixed slot 38 with ejector pin 37, restrict it, thereby make the interval between two splint 19 can not take place to enlarge, thereby make the centre gripping to the circuit board more stable, can insert ejector pin 37 in the fixed slot 38 of high difference and realize all can carry out the restriction of position to the splint 19 of different positions.
The vertical threaded connection in top of splint 19 has regulation pole 20, and the bottom of adjusting pole 20 passes splint 19 top and extends to its inside fixed mounting has clamp plate 21, and the inboard of splint 19 and the bottom of clamp plate 21 all are equipped with the rubber pad, and the rubber pad has increased the inboard of splint 19 and the bottom of clamp plate 21 and the frictional force of circuit board contact surface for the centre gripping is fixed more stably, and reduce and the circuit board between wearing and tearing, protection circuit board.
The lower part of the right side of the box body 1 is longitudinally provided with a movable groove 22, the interior of the movable groove 22 is movably provided with a movable block 23 matched with the movable groove, the middle part of the movable block 23 is transversely and fixedly inserted with an electric telescopic rod 24, the left end of the electric telescopic rod 24 is fixedly connected with the middle part of the right side of the top plate 15, the top wall of the box body 1 is fixedly provided with a placing plate 25, the bottom end of the placing plate 25 is transversely provided with a placing groove, the interior of the placing groove is transversely and movably provided with a threaded rod 26 through a pair of bearings, the left side and the right side of the threaded rod 26 are both provided with a connecting block 27 in a threaded sleeve manner, the upper part of the right side of the box body 1 is fixedly provided with a second motor 28 through a motor shell, the output shaft of the second motor 28 passes through the placing groove to be fixedly connected with the right end of the threaded rod 26, the bottom fixed mounting of second connecting seat 30 has hardness detector 31, the equal vertical spacing groove of having seted up of the left and right sides inner wall of box 1, spacing inslot movable mounting has assorted stopper 33 with it, be connected through gag lever post 34 between stopper 33 and the hardness detector 31, the process when the cooperation through gag lever post 34 and stopper 33 and spacing groove makes hardness detector 31 descend is more steady, make to carry out extruded process more steady to the circuit board, thereby make the testing result more accurate.
A display 32 is provided on the left upper portion of the case 1, and the detected hardness value can be read by the display 32.
The working principle is as follows: when the circuit board fixing device is used, the pair of clamping plates 19 are pulled to move away from each other, the clamping plates 19 drive the mounting blocks 17 to move along with the movement of the mounting blocks 17 to compress the springs 18 to generate acting force, a circuit board is placed between the two clamping plates 19, the springs 18 lose the limiting and releasing acting force when the clamping plates 19 are loosened to drive the mounting blocks 17 to move along with the movement, the two mounting blocks 17 move close to each other to enable the pair of clamping plates 19 to move close to each other to clamp the left side and the right side of the circuit board, the distance between the clamping plates 19 can be adjusted to meet the fixation of the circuit boards with different widths, the adjusting rod 20 is rotated to drive the pressing plate 21 to descend to extrude the top end of the circuit board to be fixed in the clamping plates 19, the descending distance of the adjusting pressing plate 21 can realize the fixation of the top ends of the circuit boards with different thicknesses, the ejector rod 37 can be rotated to rotate around the third connecting seat 36 until one end of the ejector rod, which is far away from the third connecting seat 36, is inserted into the fixing groove 38 to limit the positions of the clamping plates 19, so that the distance between the two clamping plates 19 is prevented from expanding, the clamping of the circuit board is more stable, after the fixing is completed, the second motor 28 is started to rotate the output shaft of the second motor to drive the threaded rod 26 to rotate, so as to drive the pair of connecting blocks 27 to move close to each other, so that the first connecting seat 40, the connecting rod 29 and the second connecting seat 30 drive the hardness detector 31 to descend to extrude the circuit board to realize the hardness test, the detected hardness value can be read by the display 32, the first motor 12 can be started to rotate the output shaft of the first motor to drive the second bevel gear 13 to rotate so as to drive the first bevel gear 11 to rotate, the lead screw 5 drives the moving block 6 to move backwards, so that the connecting plate 7 drives the bottom plate 3 to move backwards, the front and back directions of the detection position of the circuit board can be adjusted, the first motor 12 can be started to enable the output shaft of the first motor to rotate reversely to achieve the forward movement of the bottom plate 3, the electric telescopic rod 24 can be started to enable the electric telescopic rod to extend or shorten to drive the top plate 15 to move left and right, the left and right adjustment of the detection position of the circuit board is achieved, and the detection position of the circuit board can be adjusted conveniently to meet the detection requirement.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. An extrusion device for detecting the hardness of a circuit board comprises a box body (1) and is characterized in that supporting legs are fixedly mounted at four corners of the bottom end of the box body (1), a first sliding chute is longitudinally formed in the middle of the bottom wall of the box body (1), a first sliding block (2) matched with the first sliding chute is movably mounted inside the first sliding chute, a bottom plate (3) is fixedly mounted at the top end of the first sliding block (2), stand columns (4) are fixedly mounted at the left side and the right side of the bottom wall of the box body (1), moving grooves are formed in the opposite sides of the two stand columns (4), a lead screw (5) is movably mounted inside the moving grooves longitudinally, a moving block (6) is sleeved on the outer portion of the lead screw (5) in a threaded mode, the moving block (6) is connected with the bottom plate (3) through a connecting plate (7), and a gear (8) extends to the outer portion of the lead screw (5, the rear side lower part fixed mounting of box (1) has a pair of limiting plate (9), and is a pair of movable mounting has worm (10) with gear (8) engaged with between limiting plate (9), the middle part fixed mounting of worm (10) is equipped with first bevel gear (11), the rear side of box (1) and the top fixed mounting that is located worm (10) have first motor (12), the output shaft fixed mounting of first motor (12) has second bevel gear (13) with first bevel gear (11) engaged with, the second spout has transversely been seted up on the top of bottom plate (3), the inside movable mounting of second spout has second slider (14), the top fixed mounting of second slider (14) has roof (15), the fixed slot has transversely been seted up on the top of roof (15), the inside of fixed slot transversely fixed mounting has slide bar (16), the left side and the right side of the sliding rod (16) are movably sleeved with mounting blocks (17), the left side and the right side of the sliding rod (16) are respectively sleeved with springs (18), two ends of each spring (18) are respectively fixedly connected with the mounting blocks (17) and the groove wall, a clamping plate (19) is fixedly mounted at the top end of each mounting block (17), an adjusting rod (20) is connected to the vertical thread at the top end of each clamping plate (19), the bottom end of each adjusting rod (20) penetrates through the top end of each clamping plate (19) and extends to the inside of each clamping plate (19) to be fixedly provided with a pressing plate (21), a movable groove (22) is longitudinally formed in the lower portion of the right side of the box body (1), a movable block (23) matched with each movable groove (22) is movably mounted in the inside of each movable groove (22), an electric telescopic rod (24) is transversely and fixedly inserted in the middle, the top wall of the box body (1) is fixedly provided with a placing plate (25), the bottom end of the placing plate (25) is transversely provided with a placing groove, a threaded rod (26) is transversely movably mounted in the placing groove through a pair of bearings, connecting blocks (27) are respectively sleeved on the left side and the right side of the threaded rod (26) in a threaded manner, a second motor (28) is fixedly mounted on the upper portion of the right side of the box body (1) through a motor shell, an output shaft of the second motor (28) penetrates through the placing groove and is fixedly connected with the right end of the threaded rod (26), a first connecting seat (40) is fixedly mounted at the bottom end of each connecting block (27), a connecting rod (29) is movably connected at the middle part of each first connecting seat (40), a second connecting seat (30) is movably mounted at the adjacent ends of the two connecting rods (29) together, and a hardness detector, and a display (32) is arranged at the upper part of the left side of the box body (1).
2. The circuit board is extrusion device for hardness detection according to claim 1, wherein the inner walls of the left and right sides of the box body (1) are vertically provided with limiting grooves, limiting blocks (33) matched with the limiting grooves are movably mounted in the limiting grooves, and the limiting blocks (33) are connected with the hardness detector (31) through limiting rods (34).
3. The extrusion device for detecting the hardness of the circuit board as claimed in claim 1, wherein a support plate (35) is vertically and fixedly mounted on each of the left side and the right side of the top end of the top plate (15), a third connecting seat (36) is fixedly mounted on the upper portion of one side of the support plate (35) opposite to the clamping plate (19), a push rod (37) is movably connected to the middle of the third connecting seat (36), fixing grooves (38) are formed in one side of the clamping plate (19) opposite to the support plate (35) at equal intervals from top to bottom, and one ends of the push rod (37) and the adjacent ends of the fixing grooves (38) extend into the fixing grooves (38).
4. The pressing device for detecting the hardness of the circuit board as claimed in claim 1, wherein a reinforcing rod (39) is fixedly mounted on the inner side of the clamping plate (19), and the bottom end of the reinforcing rod (39) is fixedly connected to the top end of the mounting block (17).
5. The pressing device for detecting the hardness of the circuit board as claimed in claim 1, wherein the inner side of the clamping plate (19) and the bottom end of the pressing plate (21) are provided with rubber pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021016672.9U CN212391358U (en) | 2020-06-05 | 2020-06-05 | Circuit board hardness detects uses extrusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021016672.9U CN212391358U (en) | 2020-06-05 | 2020-06-05 | Circuit board hardness detects uses extrusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212391358U true CN212391358U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021016672.9U Expired - Fee Related CN212391358U (en) | 2020-06-05 | 2020-06-05 | Circuit board hardness detects uses extrusion device |
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| Country | Link |
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| CN (1) | CN212391358U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112702868A (en) * | 2021-01-25 | 2021-04-23 | 无锡新智康医疗科技有限公司 | Adjusting device and adjusting method of service system information storage device |
| CN113376332A (en) * | 2021-05-24 | 2021-09-10 | 江西省国鼎检测技术有限公司 | Portable multifunctional food safety detection equipment |
| CN115452579A (en) * | 2022-09-22 | 2022-12-09 | 深圳市康奈特电子有限公司 | Automatic testing system of new energy battery |
| CN116124571A (en) * | 2022-11-18 | 2023-05-16 | 濮阳市邦士电子科技有限公司 | Printed circuit board pull-out strength tester |
-
2020
- 2020-06-05 CN CN202021016672.9U patent/CN212391358U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112702868A (en) * | 2021-01-25 | 2021-04-23 | 无锡新智康医疗科技有限公司 | Adjusting device and adjusting method of service system information storage device |
| CN112702868B (en) * | 2021-01-25 | 2022-06-14 | 无锡新智康医疗科技有限公司 | Adjusting device and adjusting method of service system information storage device |
| CN113376332A (en) * | 2021-05-24 | 2021-09-10 | 江西省国鼎检测技术有限公司 | Portable multifunctional food safety detection equipment |
| CN115452579A (en) * | 2022-09-22 | 2022-12-09 | 深圳市康奈特电子有限公司 | Automatic testing system of new energy battery |
| CN116124571A (en) * | 2022-11-18 | 2023-05-16 | 濮阳市邦士电子科技有限公司 | Printed circuit board pull-out strength tester |
| CN116124571B (en) * | 2022-11-18 | 2024-02-09 | 北京聚仪共享科技有限公司 | Printed circuit board pull-out strength tester |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |