CN108903247B - College student information archive management collection device - Google Patents
College student information archive management collection device Download PDFInfo
- Publication number
- CN108903247B CN108903247B CN201810761209.8A CN201810761209A CN108903247B CN 108903247 B CN108903247 B CN 108903247B CN 201810761209 A CN201810761209 A CN 201810761209A CN 108903247 B CN108903247 B CN 108903247B
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- sliding
- wall
- groove
- cavity
- box
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- 238000004804 winding Methods 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 2
- 230000002730 additional effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
- A47B13/08—Table tops; Rims therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
- B42F7/00—Filing appliances without fastening means
- B42F7/14—Boxes
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- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Toys (AREA)
Abstract
The invention discloses a college student information file management and collection device which comprises a desktop, wherein supporting plates are fixedly mounted on two sides of the bottom of the desktop, a mounting hole is formed in the top of the desktop, a mounting seat is fixedly sleeved in the mounting hole, the bottom of the mounting seat extends to the position below the desktop, a storage groove is formed in the top of the mounting seat, a file box is connected in the storage groove in a sliding mode, a plurality of first springs are welded between the bottom of the file box and the inner wall of the bottom of the storage groove, sliding grooves are formed in the inner walls of the two sides of the storage groove, the same sliding rod is fixedly mounted on the inner wall of the top of the sliding groove and the inner wall of the bottom of the sliding groove, a sliding seat is sleeved on the sliding rod in a sliding mode, and one side, close to the file box, of the sliding seat is fixedly mounted with the file box. The file box is simple in structure, convenient to store, capable of effectively reducing office space occupied by the file box on a desktop and convenient for an instructor to use.
Description
Technical Field
The invention relates to the technical field of archive management and collection devices, in particular to a college student information archive management and collection device.
Background
Archives management collection device is the device that is used for collecting and deposits archives, instructor to the colleges and universities, often all can collect arrangement or call student's information, be convenient for transfer student's information, often place the archives box on the desk and deposit student's archives, because the archives box is not convenient for accomodate, the archives box is placed and can occupy very big desk space on the desk, it is narrow and small to make the office space on the desk, article place the confusion, bring very big inconvenience for instructor's official working, we have proposed a colleges and universities student information archives management collection device for this.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a college student information archive management and collection device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a college student information file management and collection device comprises a desktop, wherein supporting plates are fixedly mounted on two sides of the bottom of the desktop, a mounting hole is formed in the top of the desktop, a mounting seat is fixedly sleeved in the mounting hole, the bottom of the mounting seat extends to the lower side of the desktop, a containing groove is formed in the top of the mounting seat, a file box is connected in the containing groove in a sliding mode, a plurality of first springs are welded between the bottom of the file box and the inner wall of the bottom of the containing groove, sliding grooves are formed in the inner walls of the two sides of the containing groove, the inner wall of the top of each sliding groove and the inner wall of the bottom of each sliding groove are fixedly provided with the same sliding rod, a sliding seat is sleeved on each sliding rod in a sliding mode, one side, close to the file box, of each sliding seat is fixedly mounted with the file box, two clamping grooves are formed in one side, close to each other, of the file box is provided with a cavity, and a winding shaft is rotatably mounted on the inner wall of the bottom of the cavity, the top fixed mounting of spool has the axis of rotation, and the top of axis of rotation extends to the top and fixed mounting of archives box and has the knob, first circular hole has all been seted up on the both sides inner wall of cavity, and the downthehole slip cover of first circular is equipped with the card post, and the card post is kept away from the one end of cavity and is clamped mutually with a draw-in groove that lies in the top in two draw-in grooves that correspond, the one end that the cavity was kept away from to the card post is rotated and is installed the gyro wheel, has seted up the spacing groove on the lateral wall in first circular hole, and sliding connection has the stopper with the card post outside fixed mounting that corresponds in the spacing groove, and the stopper is close to the one side of cavity and the spacing groove that corresponds and is close to welding between the one side inner wall of cavity has a plurality of second springs, and the one end fixed mounting that the card post is close to the cavity has the rope, and the rope is close to the one end and spool fixed mounting of spool.
Preferably, be equipped with two risers in the archives box, and the top and the bottom of riser respectively with archives box's top inner wall and bottom inner wall fixed mounting, the axis of rotation is located between two risers.
Preferably, the top of sliding seat has seted up rectangular hole, and rectangular hole and corresponding slide bar sliding connection, rectangular hole has seted up the second circle type hole on being close to the one side inner wall of archives box, and second circle type hole and the card post sliding connection that corresponds.
Preferably, a third circular hole is formed in the inner wall of the top of the cavity, and the side wall of the third circular hole is not in contact with the outer side of the rotating shaft.
Preferably, a fourth circular hole is formed in the inner wall of the top of the file box, a first bearing is fixedly sleeved in the fourth circular hole, and the inner ring of the first bearing is fixedly sleeved with the outer side of the rotating shaft.
Preferably, a circular groove is formed in the inner wall of the top of the cavity, a second bearing is fixedly sleeved in the circular groove, a rotating rod is fixedly sleeved in the inner ring of the second bearing, and the top end of the rotating rod is fixedly installed at the bottom of the winding shaft.
Compared with the prior art, the invention has the beneficial effects that:
by the table top, the mounting seat, the accommodating groove, the file box, the first spring, the sliding groove, the sliding rod, the sliding seat, the clamping groove, the cavity, the winding shaft, the rotating shaft, the first round hole, the clamping posts, the limiting blocks, the limiting grooves, the second spring, the vertical plate and the idler wheel are matched with the ropes, after the files are taken, the knob is rotated, the winding shaft is driven by the knob through the rotating shaft to rotate in the cavity, the winding shaft winds the two ropes to drive the two clamping posts to move towards the mutually close direction, the clamping posts drive the corresponding limiting blocks to slide in the limiting grooves and compress the second spring, the clamping posts further drive the corresponding idler wheel to separate from the clamping groove, at the moment, the knob is pressed downwards, the file box is driven by the rotating shaft to move downwards and compress the first spring, the file box drives the two sliding seats to slide downwards on the corresponding sliding rods, and the idler wheel rolls on one side of the corresponding sliding rods close to the file box, when a draw-in groove that lies in the below aligns in gyro wheel and two draw-in grooves that correspond, the second spring of compression state resets and drives card post and draw-in groove looks card dress through the stopper that corresponds, the draw-in groove is to the card post restriction that corresponds this moment, thereby the archives box has been restricted, and be convenient for raise the archives box, the setting of first spring can effectually play the additional action when raising the archives box, make be convenient for accomodate the archives box, the effectual official working space that occupies the desktop that reduces the archives box, the use of the person of tutor of being convenient for.
The file box is simple in structure, convenient to store, capable of effectively reducing office space occupied by the file box on a desktop and convenient for an instructor to use.
Drawings
FIG. 1 is a schematic structural diagram of a college student information archive management and collection device according to the present invention;
FIG. 2 is a schematic sectional view of part A of a college student information archive management and collection device according to the present invention;
fig. 3 is a schematic sectional view of part B of a college student information archive management and collection device according to the present invention.
In the figure: the novel file cabinet comprises a desktop 1, a mounting seat 2, a storage groove 3, a file box 4, a first spring 5, a sliding groove 6, a sliding rod 7, a sliding seat 8, a clamping groove 9, a cavity 10, a winding shaft 11, a rotating shaft 12, a first circular hole 13, a clamping column 14, a limiting block 15, a limiting groove 16, a second spring 17, a vertical plate 18, a roller 19 and a rope 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a college student information file management and collection device, comprising a desktop 1, wherein supporting plates are fixedly arranged on both sides of the bottom of the desktop 1, a mounting hole is arranged on the top of the desktop 1, a mounting seat 2 is fixedly sleeved in the mounting hole, the bottom of the mounting seat 2 extends to the lower side of the desktop 1, a storage groove 3 is arranged on the top of the mounting seat 2, a file box 4 is slidably connected in the storage groove 3, a plurality of first springs 5 are welded between the bottom of the file box 4 and the inner wall of the bottom of the storage groove 3, sliding grooves 6 are arranged on the inner walls of both sides of the storage groove 3, the same sliding rod 7 is fixedly arranged on the inner wall of the top and the inner wall of the bottom of the sliding groove 6, a sliding seat 8 is slidably sleeved on the sliding rod 7, one side of the sliding seat 8 close to the file box 4 is fixedly arranged with the file box 4, two clamping grooves 9 are arranged on one side of the two sliding rods 7 close to each other, the file box 4 is provided with a cavity 10, the inner wall of the bottom of the cavity 10 is rotatably provided with a winding shaft 11, the top of the winding shaft 11 is fixedly provided with a rotating shaft 12, the top end of the rotating shaft 12 extends to the upper part of the file box 4 and is fixedly provided with a knob, the inner walls of two sides of the cavity 10 are respectively provided with a first round hole 13, a clamping column 14 is sleeved in the first round hole 13 in a sliding manner, one end of the clamping column 14 far away from the cavity 10 is clamped with one clamping groove 9 positioned above the corresponding two clamping grooves 9, one end of the clamping column 14 far away from the cavity 10 is rotatably provided with a roller 19, the side wall of the first round hole 13 is provided with a limiting groove 16, a limiting block 15 fixedly arranged at the outer side of the corresponding clamping column 14 is connected in the limiting groove 16 in a sliding manner, a plurality of second springs 17 are welded between one side of the limiting block 15 close to the cavity 10 and the inner wall of one side of the corresponding limiting groove 16 close to the cavity 10, a rope 20 is fixedly arranged at one end of the clamping column 14 close to the cavity 10, one end of the rope 20 close to the winding shaft 11 is fixedly arranged with the winding shaft 11, the rope passes through the desktop 1, the mounting seat 2, the accommodating groove 3, the file box 4, the first spring 5, the sliding groove 6, the sliding rod 7, the sliding seat 8, the clamping groove 9, the cavity 10, the winding shaft 11, the rotating shaft 12, the first round hole 13, the clamping column 14, the limiting block 15, the limiting groove 16, the second spring 17, the vertical plate 18 and the roller 19 to be matched with the rope 20, after the file is transferred, the knob is rotated, the knob drives the winding shaft 11 to rotate in the cavity 10 through the rotating shaft 12, the winding shaft 11 winds the two ropes 20 to drive the two clamping columns 14 to move towards the directions close to each other, the clamping columns 14 drive the corresponding limiting blocks 15 to slide in the limiting grooves 16 and compress the second springs 17, and the clamping columns 14 drive the corresponding rollers 19 to separate from the clamping grooves 9, at the moment, the knob is pressed downwards, the knob drives the file box 4 to move downwards through the rotating shaft 12 and compresses the first spring 5, the file box 4 drives the two sliding seats 8 to slide downwards on the corresponding sliding rods 7, the roller 19 rolls on one side of the corresponding sliding rods 7 close to the file box 4, when the roller 19 is aligned with one of the two corresponding clamping grooves 9 which is positioned at the lower part, the second spring 17 in a compressed state resets and drives the clamping column 14 to be clamped with the clamping groove 9 through the corresponding limiting block 15, at the moment, the clamping groove 9 limits the corresponding clamping column 14, so that the file box 4 is limited and the file box 4 is convenient to lift, the first spring 5 can effectively play an auxiliary role when the file box 4 is lifted, so that the file box 4 is convenient to be stored, the office space of the desktop 1 occupied by the file box 4 is effectively reduced, and the use of an instructor is convenient, the structure of the invention is simple, be convenient for accomodate archives box 4, effectual reduction archives box 4 occupies desktop 1's office space, the use of the instructor of being convenient for.
In the invention, two vertical plates 18 are arranged in a file box 4, the top and the bottom of each vertical plate 18 are respectively and fixedly installed with the inner wall of the top and the inner wall of the bottom of the file box 4, a rotating shaft 12 is positioned between the two vertical plates 18, the top of a sliding seat 8 is provided with a rectangular hole which is in sliding connection with a corresponding sliding rod 7, the inner wall of one side of the rectangular hole, which is close to the file box 4, is provided with a second circular hole which is in sliding connection with a corresponding clamping column 14, the inner wall of the top of a cavity 10 is provided with a third circular hole, the side wall of the third circular hole is not in contact with the outer side of the rotating shaft 12, the inner wall of the top of the file box 4 is provided with a fourth circular hole, the fourth circular hole is internally and fixedly sleeved with a first bearing, the inner ring of the first bearing is fixedly sleeved with the outer side of the rotating shaft 12, the inner wall of the top of the cavity 10 is provided with a circular groove, and the circular groove is internally and fixedly sleeved with a second bearing, the inner ring of the second bearing is fixedly sleeved with a rotating rod, the top end of the rotating rod is fixedly installed with the bottom of a winding shaft 11, the rotating rod passes through a desktop 1, an installation seat 2, a containing groove 3, a file box 4, a first spring 5, a sliding groove 6, a sliding rod 7, a sliding seat 8, a clamping groove 9, a cavity 10, the winding shaft 11, a rotating shaft 12, a first round hole 13, clamping columns 14, a limiting block 15, a limiting groove 16, a second spring 17, a vertical plate 18 and a roller 19 to be matched with ropes 20, after a file is taken, the knob is rotated, the winding shaft 11 is driven by the rotating shaft 12 to rotate in the cavity 10, the winding shaft 11 winds the two ropes 20 to drive the two clamping columns 14 to move towards the direction close to each other, the clamping columns 14 drive the corresponding limiting blocks 15 to slide in the limiting grooves 16 and compress the second springs 17, the clamping columns 14 further drive the corresponding rollers 19 to be separated from the clamping grooves 9, and then the knob is pressed downwards, the knob drives the file box 4 to move downwards through the rotating shaft 12 and compresses the first spring 5, the file box 4 drives the two sliding seats 8 to slide downwards on the corresponding sliding rods 7, the roller 19 rolls on one side of the corresponding sliding rod 7 close to the file box 4, when the roller 19 is aligned with one clamping groove 9 positioned below the corresponding two clamping grooves 9, the second spring 17 in a compressed state resets and drives the clamping column 14 to be clamped with the clamping groove 9 through the corresponding limiting block 15, at the moment, the clamping groove 9 limits the corresponding clamping column 14, so that the file box 4 is limited and the file box 4 is convenient to lift, the arrangement of the first spring 5 can effectively play an auxiliary role when the file box 4 is lifted, so that the file box 4 is convenient to store, the office space of the desktop 1 occupied by the file box 4 is effectively reduced, and the use of an instructor is convenient, the file box 4 is convenient to store, the file box 4 is effectively reduced to occupy the office space of the desktop 1, so that the use of a tutor is facilitated.
The working principle is as follows: when the file box is used, the two vertical plates 18 are arranged to divide the interior of the file box 4 into two placing areas, so that an instructor can classify files of students conveniently, after the files are taken, the knob is rotated to drive the rotating shaft 12 to rotate, the rotating shaft 12 drives the winding shaft 11 to rotate in the cavity 10, the winding shaft 11 winds the two ropes 20 to drive the two clamping columns 14 to move towards the directions close to each other, the clamping columns 14 drive the corresponding limiting blocks 15 to slide in the limiting grooves 16 and compress the second springs 17, the clamping columns 14 drive the corresponding idler wheels 19 to be separated from the clamping grooves 9, at the moment, the knob is pressed downwards, the knob drives the file box 4 to move downwards through the rotating shaft 12 and compress the first springs 5, the file box 4 drives the two sliding seats 8 to slide downwards on the corresponding sliding rods 7, the idler wheels 19 roll on one side, close to the file box 4, when the idler wheels 19 are aligned with one clamping groove 9 positioned below in the corresponding two clamping grooves 9, second spring 17 at compression state resets and drives card post 14 and draw-in groove 9 through the stopper 15 that corresponds and clamps mutually, draw-in groove 9 restricts corresponding card post 14 this moment, thereby archives box 4 has been restricted, and be convenient for raise archives box 4, the setting of first spring 5 can effectually play the additional action when raising archives box 4, make be convenient for accomodate archives box 4, effectual reduction archives box 4 occupies desktop 1's office space, be convenient for counselor's use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The college student information archive management and collection device comprises a desktop (1), wherein supporting plates are fixedly mounted on two sides of the bottom of the desktop (1), and is characterized in that a mounting hole is formed in the top of the desktop (1), a mounting seat (2) is fixedly sleeved in the mounting hole, the bottom of the mounting seat (2) extends to the lower portion of the desktop (1), a storage groove (3) is formed in the top of the mounting seat (2), an archive box (4) is connected to the storage groove (3) in a sliding mode, a plurality of first springs (5) are welded between the bottom of the archive box (4) and the inner wall of the bottom of the storage groove (3), sliding grooves (6) are formed in the inner walls of two sides of the storage groove (3), a same sliding rod (7) is fixedly mounted on the inner wall of the top of each sliding groove (6) and the inner wall of the bottom of each sliding groove, sliding seats (8) are arranged on the sliding rods (7), one side of the sliding seat (8) close to the file box (4) is fixedly installed with the file box (4), two clamping grooves (9) are respectively formed in one side of the two sliding rods (7) close to each other, a cavity (10) is formed in the file box (4), a winding shaft (11) is rotatably installed on the inner wall of the bottom of the cavity (10), a rotating shaft (12) is fixedly installed at the top of the winding shaft (11), the top end of the rotating shaft (12) extends to the upper portion of the file box (4) and is fixedly provided with a knob, first circular holes (13) are respectively formed in the inner walls of the two sides of the cavity (10), clamping columns (14) are slidably sleeved in the first circular holes (13), one ends, far away from the cavity (10), of the clamping columns (14) are clamped with one clamping groove (9) located above the two corresponding clamping grooves (9), and rollers (19) are rotatably installed at one ends, far away from the cavity (10), of the clamping columns (14), spacing groove (16) have been seted up on the lateral wall in first circular hole (13), and sliding connection has and the stopper (15) of the card post (14) outside fixed mounting that corresponds in spacing groove (16), the welding has a plurality of second springs (17) between one side that stopper (15) are close to cavity (10) and the one side inner wall that corresponding spacing groove (16) are close to cavity (10), the one end fixed mounting that card post (14) are close to cavity (10) has rope (20), and rope (20) are close to the one end and spool (11) fixed mounting of spool (11).
2. The college student information archive management and collection device according to claim 1, wherein two risers (18) are arranged in the archive box (4), the tops and the bottoms of the risers (18) are fixedly mounted with the top inner wall and the bottom inner wall of the archive box (4), respectively, and the rotating shaft (12) is located between the two risers (18).
3. The college student information archive management and collection device according to claim 1, wherein the top of the sliding seat (8) is provided with a rectangular hole, the rectangular hole is slidably connected with the corresponding sliding rod (7), the inner wall of one side of the rectangular hole close to the archive box (4) is provided with a second circular hole, and the second circular hole is slidably connected with the corresponding clamping column (14).
4. The college student information archive management and collection device according to claim 1, wherein a third circular hole is formed in the top inner wall of the cavity (10), and the side wall of the third circular hole is not in contact with the outer side of the rotating shaft (12).
5. The college student information archive management and collection device according to claim 1, wherein a fourth circular hole is formed in the top inner wall of the archive box (4), and a first bearing is fixedly sleeved in the fourth circular hole, and an inner ring of the first bearing is fixedly sleeved on the outer side of the rotating shaft (12).
6. The college student information file management and collection device according to claim 1, wherein a circular groove is formed on the inner wall of the top of the cavity (10), a second bearing is fixedly sleeved in the circular groove, a rotating rod is fixedly sleeved in the inner ring of the second bearing, and the top end of the rotating rod is fixedly mounted with the bottom of the winding shaft (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810761209.8A CN108903247B (en) | 2018-07-12 | 2018-07-12 | College student information archive management collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810761209.8A CN108903247B (en) | 2018-07-12 | 2018-07-12 | College student information archive management collection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108903247A CN108903247A (en) | 2018-11-30 |
| CN108903247B true CN108903247B (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810761209.8A Expired - Fee Related CN108903247B (en) | 2018-07-12 | 2018-07-12 | College student information archive management collection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108903247B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109875242A (en) * | 2019-03-18 | 2019-06-14 | 李卫华 | Archive management device |
| CN112336079A (en) * | 2020-11-04 | 2021-02-09 | 新乡市达威智能门窗实用技术研究中心 | File cabinet arranged underground |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205385978U (en) * | 2016-01-24 | 2016-07-20 | 新乡职业技术学院 | Desktop type archives storage device |
| CN206687468U (en) * | 2016-12-30 | 2017-12-01 | 王勇男 | A kind of buried archiving system |
| CN207456543U (en) * | 2017-12-07 | 2018-06-05 | 重庆众誉材工科技有限公司 | Direct readout digital water meter with antifouling liquid seal |
| CN108180352A (en) * | 2018-01-09 | 2018-06-19 | 罗厚镇 | A kind of hydraulic transmission for facilitating installation |
| CN108255263A (en) * | 2017-12-29 | 2018-07-06 | 广东童书科技有限公司 | A kind of inquiry unit that cloud platform is promoted based on children's reading |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180064694A (en) * | 2016-12-06 | 2018-06-15 | 이호석 | Shelf to install a hoist to a cold table |
-
2018
- 2018-07-12 CN CN201810761209.8A patent/CN108903247B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205385978U (en) * | 2016-01-24 | 2016-07-20 | 新乡职业技术学院 | Desktop type archives storage device |
| CN206687468U (en) * | 2016-12-30 | 2017-12-01 | 王勇男 | A kind of buried archiving system |
| CN207456543U (en) * | 2017-12-07 | 2018-06-05 | 重庆众誉材工科技有限公司 | Direct readout digital water meter with antifouling liquid seal |
| CN108255263A (en) * | 2017-12-29 | 2018-07-06 | 广东童书科技有限公司 | A kind of inquiry unit that cloud platform is promoted based on children's reading |
| CN108180352A (en) * | 2018-01-09 | 2018-06-19 | 罗厚镇 | A kind of hydraulic transmission for facilitating installation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108903247A (en) | 2018-11-30 |
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Granted publication date: 20211026 |