CN113059948A - Questionnaire for public place questionnaire - Google Patents
Questionnaire for public place questionnaire Download PDFInfo
- Publication number
- CN113059948A CN113059948A CN202110296032.0A CN202110296032A CN113059948A CN 113059948 A CN113059948 A CN 113059948A CN 202110296032 A CN202110296032 A CN 202110296032A CN 113059948 A CN113059948 A CN 113059948A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- questionnaire
- spring
- public place
- conducting
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L5/00—Drawing boards
- B43L5/02—Drawing boards having means for clamping sheets of paper thereto
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention belongs to the field of questionnaires, and particularly relates to a questionnaire for carrying out public place questionnaires, which comprises a base, wherein four uniformly distributed supporting legs are fixedly connected to the outside of the base, a threaded rod is connected to the inside of each supporting leg through threads, a ring groove is formed in the threaded rod, a connecting block is slidably connected to the inner side of each supporting leg, a roller is installed at the bottom of the connecting block, a connecting seat is fixedly connected to the top of the connecting block, the threaded rod is rotatably connected to the inside of the connecting seat, a connecting shell is fixedly connected to the top of the base, and a placing frame is in contact with the top of the connecting shell. According to the invention, through the design of the supporting leg, the threaded rod, the knob, the connecting seat, the connecting block, the annular groove, the roller and other parts, the whole body has mobility, and the roller is accommodated in the supporting leg through the operation of rotating the knob and the like, so that the supporting leg is contacted with the ground, the whole body is conveniently erected on the ground, and the sliding is prevented.
Description
Technical Field
The invention relates to the field of questionnaires, in particular to a questionnaire for carrying out questionnaires in public places.
Background
The questionnaire is also called questionnaire, and is a tool for collecting data in social investigation research, and is in the form of a copy for systematically recording investigation content in the form of questions, and the essence of the questionnaire is a series of questions designed for collecting information such as attitude behavior characteristic value viewpoint or belief of people for a specific question. The questionnaire survey is also called a questionnaire method, and is a survey method in which a designer uses a questionnaire designed uniformly to learn about the situation or inquire about opinion collection information to a respondent.
At present, the conventional questionnaire is complex in structure and not easy to install, is inconvenient to disassemble and overhaul, does not have a moving function, and is not flexible overall, and questionnaire recording paper for questionnaire survey is easily blown away by wind when being outdoors, so that trouble is very trouble. Therefore, improvements are needed.
Disclosure of Invention
The invention aims to provide a questionnaire for public place questionnaire, which solves the problems that the questionnaire is not easy to install and disassemble, has no mobility and has insufficient protection on questionnaire recording paper.
In order to achieve the purpose, the invention provides the following technical scheme: a questionnaire for public place questionnaire comprises a base, wherein four uniformly distributed supporting legs are fixedly connected to the outer portion of the base, a threaded rod is connected to the inner portion of each supporting leg through threads, an annular groove is formed in the threaded rod, a connecting block is slidably connected to the inner side of each supporting leg, a roller is mounted at the bottom of the connecting block, a connecting seat is fixedly connected to the top of the connecting block, the inner portion of the connecting seat is rotatably connected with the threaded rod, a connecting shell is fixedly connected to the top of the base, a placing frame is contacted with the top of the connecting shell, questionnaire recording paper is placed on the inner side of the placing frame, two symmetrically distributed buckles are fixedly connected to the bottom of the placing frame, the buckles are slidably connected to the inner portion of the connecting shell, each buckle is provided with a jack, and two symmetrically distributed limit pins are slidably connected to the inner, each limiting pin is fixedly connected with a pull block, one end of each limiting pin, far away from the pull block, is connected to the inside of the jack in a sliding manner, two symmetrically distributed clamping seats are fixedly connected on the placing frame, each clamping seat is provided with a clamping groove, the inner side of the clamping groove is connected with a connecting rod in a sliding way, a limiting block is fixedly connected on the connecting rod, the limiting block is contacted with the clamping seat, the inside of the clamping seat is connected with a fixing bolt through threads, the fixing bolt is contacted with the connecting rod, one end of the connecting rod, which is far away from the limiting block, is fixedly connected with a supporting plate, the inside of the supporting plate is connected with a guide rod in a sliding way, the bottom of the guide rod is fixedly connected with a connecting plate, the bottom of the connecting plate is fixedly connected with two symmetrically distributed supports, a compression roller is connected between the two supports in a rotating mode, and the compression roller is in contact with questionnaire survey recording paper.
Preferably, the top of the guide rod is fixedly connected with a limiting plate, and the limiting plate is made of stainless steel.
Preferably, the outer portion of the guide rod is sleeved with a third spring, one end of the third spring is fixedly connected with a limiting plate, and the other end of the third spring is fixedly connected with a supporting plate.
Preferably, the top fixedly connected with turn button of threaded rod, the turn button is stainless steel.
Preferably, the outside of threaded rod has cup jointed first spring, the one end fixedly connected with connecting seat of first spring, the other end fixed connection of first spring is in the internal surface of supporting leg.
Preferably, the inside of connecting seat has a spacing bolt through threaded connection, the tail end and the annular sliding connection of spacing bolt.
Preferably, a second spring is sleeved outside the limiting pin, one end of the second spring is fixedly connected with a pulling block, and the other end of the second spring is fixedly connected to the outer surface of the connecting shell.
Preferably, the outer part of the connecting rod is connected with a threaded ring through threads, and the threaded ring is in contact with one side, away from the limiting block, of the clamping seat.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the design of the supporting leg, the threaded rod, the knob, the connecting seat, the connecting block, the annular groove, the roller and other parts, the whole body has mobility, and the roller is accommodated in the supporting leg through the operation of rotating the knob and the like, so that the supporting leg is contacted with the ground, the whole body is conveniently erected on the ground, and the sliding is prevented.
2. The mounting structure is formed by designing the base, the connecting shell, the limiting pin, the pull block, the second spring and other parts, the buckle is designed at the bottom of the placing rack for placing questionnaire recording paper, the insertion hole is designed in the buckle and matched with the limiting pin in the mounting structure, and the placing rack can be conveniently mounted and dismounted.
3. According to the invention, the clamping seat, the connecting rod, the limiting block, the threaded ring, the fixing bolt, the supporting plate, the guide rod, the third spring, the limiting plate, the connecting plate, the support, the press roller and other components are designed to form a mechanism for pressing questionnaire survey recording paper, the press roller can only be attached to the questionnaire survey recording paper in the placing frame by utilizing the reaction force of the third spring, the pressing of the questionnaire survey recording paper in the placing frame cannot be lost due to the reduction of the questionnaire survey recording paper, and the influence of blowing away of the questionnaire survey recording paper and the like is prevented.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the portion B of FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of the structure of the portion C of FIG. 1 according to the present invention;
FIG. 5 is a side cross-sectional view of the cartridge of FIG. 1 in accordance with the present invention;
figure 6 is a side cross-sectional view of the rack of figure 1 of the present invention;
figure 7 is a top view of the rack of figure 1 of the present invention.
In the figure: 1. a base; 2. supporting legs; 3. a threaded rod; 4. turning a button; 5. a ring groove; 6. a connecting seat; 7. connecting blocks; 8. a roller; 9. a limit bolt; 10. a first spring; 11. a connecting shell; 12. placing a rack; 13. buckling; 14. a jack; 15. a spacing pin; 16. pulling the block; 17. a second spring; 18. questionnaire chart paper; 19. a card holder; 20. a card slot; 21. a connecting rod; 22. a limiting block; 23. a threaded ring; 24. fixing the bolt; 25. a support plate; 26. a guide bar; 27. a connecting plate; 28. a support; 29. a compression roller; 30. a limiting plate; 31. and a third spring.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, a questionnaire for public place questionnaire comprises a base 1, four evenly distributed support legs 2 fixedly connected to the outside of the base 1, a threaded rod 3 connected to the inside of each support leg 2 through a thread, a ring groove 5 formed on the threaded rod 3, a connecting block 7 slidably connected to the inside of the support leg 2, a roller 8 mounted at the bottom of the connecting block 7, a connecting seat 6 fixedly connected to the top of the connecting block 7, a threaded rod 3 rotatably connected to the inside of the connecting seat 6, a connecting shell 11 fixedly connected to the top of the base 1, a placing rack 12 in contact with the top of the connecting shell 11, questionnaire recording paper 18 placed on the inside of the placing rack 12, two symmetrically distributed buckles 13 fixedly connected to the bottom of the placing rack 12, the buckles 13 slidably connected to the inside of the connecting shell 11, and a jack 14 formed on each buckle, the connecting shell 11 is internally and slidably connected with two symmetrically distributed limiting pins 15, each limiting pin 15 is fixedly connected with a pulling block 16, one end of each limiting pin 15, far away from the pulling block 16, is slidably connected with the inside of the jack 14, the placing rack 12 is fixedly connected with two symmetrically distributed clamping seats 19, each clamping seat 19 is provided with a clamping groove 20, the inner side of each clamping groove 20 is slidably connected with a connecting rod 21, each connecting rod 21 is fixedly connected with a limiting block 22, each limiting block 22 is contacted with the clamping seat 19, the inside of each clamping seat 19 is connected with a fixing bolt 24 through threads, each fixing bolt 24 is contacted with the connecting rod 21, one end of each connecting rod 21, far away from the limiting block 22, is fixedly connected with a supporting plate 25, the inside of each supporting plate 25 is slidably connected with a guide rod 26, the bottom of each guide rod 26 is fixedly connected with a connecting, the pressure roller 29 is in contact with the questionnaire recording paper 18.
Referring to fig. 4 and 6, a position-limiting plate 30 is fixedly connected to the top of the guide rod 26, and the position-limiting plate 30 is made of stainless steel. The guide rod 26 is limited by the design of the limit plate 30.
Referring to fig. 4 and 6, a third spring 31 is sleeved outside the guide rod 26, one end of the third spring 31 is fixedly connected with a limiting plate 30, and the other end of the third spring 31 is fixedly connected with the supporting plate 25. The design of the third spring 31 allows the pressure roller 29 to be always attached to the questionnaire recording paper 18.
Referring to fig. 1, a knob 4 is fixedly connected to the top of the threaded rod 3, and the knob 4 is made of stainless steel. Through the design of knob 4, conveniently rotate threaded rod 3.
Referring to fig. 1, a first spring 10 is sleeved outside the threaded rod 3, one end of the first spring 10 is fixedly connected to the connecting seat 6, and the other end of the first spring 10 is fixedly connected to the inner surface of the supporting leg 2. Through the design of the first spring 10, the screw rod 3 has the function of preventing loosening.
Referring to fig. 2, the inside of the connecting seat 6 is connected with a limit bolt 9 through a thread, and the tail end of the limit bolt 9 is slidably connected with the annular groove 5. Through the design of limit bolt 9, with the cooperation of annular 5, do not influence threaded rod 3 pivoted while, still made things convenient for being connected between threaded rod 3 and the connecting seat 6.
Referring to fig. 3, a second spring 17 is sleeved outside the limit pin 15, one end of the second spring 17 is fixedly connected to the pull block 16, and the other end of the second spring 17 is fixedly connected to the outer surface of the connecting shell 11. Through the design of the second spring 17, the limiting pin 15 has the function of assisting in resetting.
Referring to fig. 4, the outer portion of the connecting rod 21 is connected to a threaded ring 23 through a thread, and the threaded ring 23 contacts with a side of the clamping seat 19 away from the limiting block 22. Through the design of screw ring 23, with stopper 22 cooperation, played spacing effect to connecting rod 21.
The specific implementation process of the invention is as follows: when the storage rack 12 is required to be installed, the pulling blocks 16 on the two limiting pins 15 are pulled outwards at the same time, the pulling blocks 16 drive the limiting pins 15 to move and stretch the second springs 17, then the buckles 13 at the bottom of the storage rack 12 slide into the connecting shell 11, at the moment, the pulling blocks 16 are loosened, the second springs 17 reset and drive the pulling blocks 16 to reset, the pulling blocks 16 drive the limiting pins 15 to reset and enable the limiting pins 15 to enter the insertion holes 14 in the buckles 13, the installation of the storage rack 12 is completed, similarly, the limiting pins 15 leave the insertion holes 14 by pulling the pulling blocks 16, the storage rack 12 can be disassembled conveniently, then the questionnaire recording paper 18 is placed on the inner side of the storage rack 12, then the connecting rods 21 on the supporting plate 25 slide into the clamping grooves 20 of the clamping seats 19 on the storage rack 12, and then the threaded rings 23 outside the connecting rods 21 are screwed tightly, at the moment, the threaded ring 23 and the limiting block 22 on the connecting rod 21 are both tightly attached to the clamping seat 19, then the fixing bolt 24 is screwed, so that the fixing bolt 24 is contacted and positioned above the connecting rod 21, the fixing of the connecting rod 21 is completed, at the moment, the compression roller 29 is contacted with the questionnaire recording paper 18, the compression roller 29 drives the support 28 to move upwards under the action of a reaction force, the support 28 drives the connecting plate 27 to move upwards, the connecting plate 27 drives the guide rod 26 to move upwards, the guide rod 26 drives the limiting plate 30 to move upwards, the limiting plate 30 stretches the third spring 31, the reaction force of the third spring 31 acts back on the compression roller 29, so that the compression roller 29 is always attached to the questionnaire recording paper 18, then the threaded rods 3 on the four supporting legs 2 are respectively rotated through the four rotating buttons 4, the threaded rods 3 move downwards through threaded motion, and the connecting seat 6 is driven to move downwards, the connecting seat 6 drives the, make gyro wheel 8 contact ground, relative supporting leg 2 times lifts off ground to make the whole lifted up, then utilize gyro wheel 8 to promote whole to predetermined place, after arriving predetermined place, reverse turn button 4, make gyro wheel 8 rebound and accomodate in supporting leg 2, supporting leg 2 contacts ground again this moment, thereby makes whole stand on ground, prevents to slide, then extracts questionnaire survey recording paper 18 in rack 12 and carries out the questionnaire survey.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A questionnaire for conducting public place questionnaires, comprising a base (1), characterized in that: the device is characterized in that four supporting legs (2) which are uniformly distributed are fixedly connected to the outer portion of the base (1), a threaded rod (3) is connected to the inner portion of each supporting leg (2) through threads, an annular groove (5) is formed in each threaded rod (3), a connecting block (7) is connected to the inner side of each supporting leg (2) in a sliding mode, a roller (8) is installed at the bottom of each connecting block (7), a connecting seat (6) is fixedly connected to the top of each connecting block (7), the threaded rods (3) are connected to the inner portion of each connecting seat (6) in a rotating mode, a connecting shell (11) is fixedly connected to the top of the base (1), a placing frame (12) is contacted with the top of each connecting shell (11), questionnaire recording paper (18) is placed on the inner side of the placing frame (12), and, the clamping buckles (13) are connected inside the connecting shell (11) in a sliding mode, a jack (14) is formed in each clamping buckle (13), two limiting pins (15) which are symmetrically distributed are connected inside the connecting shell (11) in a sliding mode, a pulling block (16) is fixedly connected to each limiting pin (15), one end, far away from the pulling block (16), of each limiting pin (15) is connected inside the jack (14) in a sliding mode, two clamping seats (19) which are symmetrically distributed are fixedly connected to the placing frame (12), a clamping groove (20) is formed in each clamping seat (19), a connecting rod (21) is connected to the inner side of each clamping groove (20) in a sliding mode, a limiting block (22) is fixedly connected to each connecting rod (21), the limiting block (22) is in contact with the clamping seats (19), and a fixing bolt (24) is connected to the clamping seats (19) through threads, fixing bolt (24) and connecting rod (21) contact, the one end fixedly connected with backup pad (25) of stopper (22) are kept away from in connecting rod (21), the inside sliding connection of backup pad (25) has guide arm (26), the bottom fixedly connected with connecting plate (27) of guide arm (26), two symmetric distribution support (28) of bottom fixedly connected with of connecting plate (27), two rotate jointly between support (28) and be connected with compression roller (29), compression roller (29) and questionnaire survey recording paper (18) contact.
2. The method of conducting a public place questionnaire of claim 1, wherein: the top of the guide rod (26) is fixedly connected with a limiting plate (30), and the limiting plate (30) is made of stainless steel.
3. The method of conducting a public place questionnaire of claim 1, wherein: the outside of guide arm (26) has cup jointed third spring (31), third spring (31) one end fixedly connected with limiting plate (30), the other end fixedly connected with backup pad (25) of third spring (31).
4. The method of conducting a public place questionnaire of claim 1, wherein: the top fixedly connected with turn button (4) of threaded rod (3), turn button (4) are stainless steel.
5. The method of conducting a public place questionnaire of claim 1, wherein: first spring (10) has been cup jointed to the outside of threaded rod (3), the one end fixedly connected with connecting seat (6) of first spring (10), the other end fixed connection of first spring (10) is in the internal surface of supporting leg (2).
6. The method of conducting a public place questionnaire of claim 1, wherein: the inside of connecting seat (6) has stop bolt (9) through threaded connection, the tail end and annular (5) sliding connection of stop bolt (9).
7. The method of conducting a public place questionnaire of claim 1, wherein: the outside of spacer pin (15) has cup jointed second spring (17), the one end fixedly connected with of second spring (17) draws piece (16), the other end fixed connection of second spring (17) is in the surface of connecting shell (11).
8. The method of conducting a public place questionnaire of claim 1, wherein: the outside of connecting rod (21) has screw ring (23) through threaded connection, screw ring (23) and cassette (19) keep away from the one side contact of stopper (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110296032.0A CN113059948A (en) | 2021-03-19 | 2021-03-19 | Questionnaire for public place questionnaire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110296032.0A CN113059948A (en) | 2021-03-19 | 2021-03-19 | Questionnaire for public place questionnaire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113059948A true CN113059948A (en) | 2021-07-02 |
Family
ID=76562449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110296032.0A Withdrawn CN113059948A (en) | 2021-03-19 | 2021-03-19 | Questionnaire for public place questionnaire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113059948A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130138579A (en) * | 2012-06-11 | 2013-12-19 | 피아산업 주식회사 | Carriage assembly of mobile rack |
| CN107348698A (en) * | 2017-07-20 | 2017-11-17 | 王琪 | A kind of novel environment friendly bookcase |
| KR101836150B1 (en) * | 2017-10-27 | 2018-03-08 | 주식회사 우드메탈 | Safety bookcase |
| CN108818732A (en) * | 2018-06-14 | 2018-11-16 | 清远市天顺办公设备有限公司 | A kind of office financial accounting document punching device |
| CN209245777U (en) * | 2018-10-25 | 2019-08-13 | 董苏瑶 | A kind of energy-saving small desk lamp |
| CN110575011A (en) * | 2019-08-27 | 2019-12-17 | 齐鲁理工学院 | Portable nursing is data storage device for teaching |
| CN210728623U (en) * | 2019-09-03 | 2020-06-12 | 安徽信息工程学院 | Supporting and fixing device for fitness equipment |
| CN211844524U (en) * | 2020-03-25 | 2020-11-03 | 邢台职业技术学院 | Shallow is transported with archives to school's management |
| CN211882883U (en) * | 2019-12-02 | 2020-11-10 | 合肥好用工网络科技有限公司 | Property management manual rack |
| CN211995713U (en) * | 2020-04-23 | 2020-11-24 | 洛阳起重机厂有限公司 | Hoisting type trolley convenient to disassemble |
| CN112377744A (en) * | 2020-11-12 | 2021-02-19 | 佛山市高明欧一电子制造有限公司 | Fixing device of big-arch shelter intelligence temperature controller |
-
2021
- 2021-03-19 CN CN202110296032.0A patent/CN113059948A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130138579A (en) * | 2012-06-11 | 2013-12-19 | 피아산업 주식회사 | Carriage assembly of mobile rack |
| CN107348698A (en) * | 2017-07-20 | 2017-11-17 | 王琪 | A kind of novel environment friendly bookcase |
| KR101836150B1 (en) * | 2017-10-27 | 2018-03-08 | 주식회사 우드메탈 | Safety bookcase |
| CN108818732A (en) * | 2018-06-14 | 2018-11-16 | 清远市天顺办公设备有限公司 | A kind of office financial accounting document punching device |
| CN209245777U (en) * | 2018-10-25 | 2019-08-13 | 董苏瑶 | A kind of energy-saving small desk lamp |
| CN110575011A (en) * | 2019-08-27 | 2019-12-17 | 齐鲁理工学院 | Portable nursing is data storage device for teaching |
| CN210728623U (en) * | 2019-09-03 | 2020-06-12 | 安徽信息工程学院 | Supporting and fixing device for fitness equipment |
| CN211882883U (en) * | 2019-12-02 | 2020-11-10 | 合肥好用工网络科技有限公司 | Property management manual rack |
| CN211844524U (en) * | 2020-03-25 | 2020-11-03 | 邢台职业技术学院 | Shallow is transported with archives to school's management |
| CN211995713U (en) * | 2020-04-23 | 2020-11-24 | 洛阳起重机厂有限公司 | Hoisting type trolley convenient to disassemble |
| CN112377744A (en) * | 2020-11-12 | 2021-02-19 | 佛山市高明欧一电子制造有限公司 | Fixing device of big-arch shelter intelligence temperature controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113059948A (en) | Questionnaire for public place questionnaire | |
| CN211423839U (en) | Intelligent education consultation server | |
| CN111772342A (en) | Student chair convenient for outdoor use | |
| CN213781352U (en) | Probability event simulation teaching aid for mathematics in middle school | |
| CN212186918U (en) | Portable first-aid kit | |
| CN208335482U (en) | A kind of English Teaching of Senior High School apparatus | |
| CN208595397U (en) | The limit-type computer bracket of bolt | |
| CN208652062U (en) | A kind of horizontal advertisement machine of energy conservation and environmental protection | |
| CN214267149U (en) | Receipt fixing device of financial accounting receipt fence | |
| CN208488369U (en) | A kind of friction coefficient testing car label amplifying device | |
| CN108006030B (en) | Telescopic labor-saving mechanism and virtual reality experience equipment | |
| CN113870658B (en) | Twenty-four solar terms cognitive teaching equipment used in kindergarten and use method thereof | |
| CN215532517U (en) | Reading frame for Chinese teaching | |
| CN214295246U (en) | Think political affairs classroom teaching auxiliary device | |
| CN210091421U (en) | Exercise device is used in outdoor english study | |
| CN206162716U (en) | Public sports curriculum attendance device of colleges and universities | |
| CN215191629U (en) | Mental health education is with mental tester | |
| CN221153573U (en) | Teaching chair suitable for it is outdoor | |
| CN109493649A (en) | A kind of intelligent language study auxiliary device | |
| CN204965775U (en) | Psychology teaching device | |
| CN208779027U (en) | A kind of host rack of computer floor | |
| CN219245203U (en) | Flat panel processing button test machine capable of being adjusted according to size | |
| CN209657553U (en) | One kind using finger training device for Piano Teaching | |
| CN220137851U (en) | Turnover frame for mechanical component teaching | |
| CN213776910U (en) | Display rotating tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210702 |
|
| WW01 | Invention patent application withdrawn after publication |