CN111583757B - Computer teaching display device - Google Patents
Computer teaching display device Download PDFInfo
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- CN111583757B CN111583757B CN202010503476.2A CN202010503476A CN111583757B CN 111583757 B CN111583757 B CN 111583757B CN 202010503476 A CN202010503476 A CN 202010503476A CN 111583757 B CN111583757 B CN 111583757B
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- fixedly connected
- box body
- rod
- gear
- telescopic rod
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
-
- 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
- A47B81/00—Cabinets or racks specially adapted for other particular purposes, e.g. for storing guns or skis
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Electrically Operated Instructional Devices (AREA)
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Abstract
一种计算机教学展示装置，包括中空的箱体，所述箱体中部设置有主动轴，所述主动轴通过锥齿轮组连接有Z形杆，所述Z形杆与所述箱体转动连接，所述Z形杆右端转动连接有套管，所述套管滑动连接有L形杆，所述L形杆与右端滑动连接有第一连杆，所述第一连杆与所述箱体固定连接，所述L形杆上侧滑动连接有第二连杆。本发明有效的解决了现有教学展示装置只能展示教学模型的一个面，无法对模型进行全方位的展示，不能对展示模型进行固定，且较为后排的学生无法对模型进行观察，影响教学质量和效率，缺少教学工具存放的功能、教学工具容易丢失且不便于教学展示装置位置移动的问题。
A computer teaching display device comprises a hollow box body, a driving shaft is arranged in the middle of the box body, the driving shaft is connected with a Z-shaped rod through a bevel gear set, and the Z-shaped rod is rotatably connected with the box body, The right end of the Z-shaped rod is rotatably connected with a sleeve, the sleeve is slidably connected with an L-shaped rod, and the L-shaped rod is slidably connected to the right end with a first connecting rod, and the first connecting rod is fixed to the box body A second connecting rod is slidably connected to the upper side of the L-shaped rod. The invention effectively solves the problem that the existing teaching display device can only display one side of the teaching model, cannot display the model in an all-round way, cannot fix the display model, and the students in the back row cannot observe the model, which affects the teaching. Quality and efficiency, lack of the function of storing teaching tools, easy loss of teaching tools, and inconvenience in moving the position of the teaching display device.
Description
Technical Field
The invention relates to the field of teaching, in particular to a computer teaching display device.
Background
When a computer teacher gives lessons, some teaching models are often required to be displayed in class, and through displaying the teaching models, students can understand relevant knowledge better, so that the learning efficiency of the students is effectively improved. The existing model display device for computer teaching often needs to display some teaching models in a classroom, is unreasonable in structural design, single in function, can only display one surface of the teaching model, cannot display the models in all directions, cannot fix the displayed models, cannot observe the models by students in back rows, is poor in display effect, influences teaching quality and efficiency, lacks the function of storing teaching tools, has the phenomenon that the teaching tools are easy to lose, and is inconvenient for moving the position of the teaching display device; therefore, a computer teaching display device is urgently needed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a computer teaching display device, which effectively solves the problems that the existing teaching display device is unreasonable in structural design and single in function, can only display one surface of a teaching model, cannot display the model in an all-around manner, cannot fix the display model, and students in the back row cannot observe the model, so that the teaching quality and the teaching efficiency are influenced, the function of storing teaching tools is lacked, the teaching tools are easy to lose, and the position of the teaching display device is inconvenient to move.
In order to solve the problems, the invention adopts the technical scheme that:
a computer teaching display device comprises a hollow box body, wherein a driving shaft is arranged in the middle of the box body, the driving shaft is connected with a Z-shaped rod through a bevel gear set, the Z-shaped rod is rotatably connected with the box body, the right end of the Z-shaped rod is rotatably connected with a sleeve, the sleeve is slidably connected with an L-shaped rod, the L-shaped rod and the right end are slidably connected with a first connecting rod, the first connecting rod is fixedly connected with the box body, the upper side of the L-shaped rod is slidably connected with a second connecting rod, the second connecting rod is fixedly connected with the box body, the upper end of the L-shaped rod is fixedly connected with a first rack, the first rack is engaged and connected with a first gear, the middle part of the first gear is fixedly connected with a first transmission shaft, the first transmission shaft is rotatably connected with the box body, the right end of the first transmission shaft is fixedly connected with an incomplete gear, the incomplete gear is engaged and connected with a second gear, the second gear is fixedly connected with a second transmission shaft, the second transmission shaft is rotatably connected with the box body, a telescopic structure is arranged on the left side of the second transmission shaft, a hollow display board is arranged on the upper side of the telescopic structure, and a clamping structure is arranged on the upper side of the display board; the rotation of the driving shaft forms a structure that the display board does intermittent time reciprocating rotation;
a placing groove is formed in the lower side of the box body, a storage structure is arranged in the placing groove, and a handle is arranged on the left side of the storage structure; the bottom end of the box body is fixedly connected with a plurality of universal wheels which are the same in size and are uniformly distributed;
the telescopic structure comprises a hollow first telescopic rod, an elongated slot is formed in the left side of the first telescopic rod, a second telescopic rod is connected to the inner wall of the first telescopic rod in a sliding mode, a fixed block is fixedly connected to the left end of the second telescopic rod and is connected with the elongated slot in a sliding mode, a moving ring is fixedly connected to the left end of the fixed block and is connected with the first telescopic rod in a sliding mode, a push-pull round block is fixedly connected to the left end of the moving ring, a locking screw is connected to the rear end of the moving ring in a threaded mode, the upper end of the second telescopic rod is fixedly connected with the display board, the lower side of the first telescopic rod is connected with the box body in a rotating mode, and the lower end of the first telescopic rod is connected with the second transmission shaft through a bevel gear set;
the clamping structure comprises a screw rod in threaded connection with the display board, the front end of the screw rod is rotatably connected with a stop lever, a placing block is fixedly connected to the upper side of the front end of the inner wall of the display board, a through circular groove is formed in the rear side of the placing block, a placing groove is formed in the middle of the placing block, and the screw rod is screwed to form a structure of the stop lever and the placing groove in sliding connection.
Preferably, the storage structure comprises a short shaft rotatably connected with the bottom end of the box body, a coil spring is fixedly connected with the lower end of the short shaft, the other end of the coil spring is fixedly connected with the bottom end of the box body, a third gear is fixedly connected with the upper end of the short shaft, a second rack is meshed and connected with the third gear, a storage box is fixedly connected with the upper end of the second rack, the front section of the storage box is fixedly connected with the handle, inverted T-shaped blocks are fixedly connected with the front side and the rear side of the storage box, a fixing plate with a sliding groove is fixedly connected with the upper side of the bottom end of the box body, and the inverted T-shaped blocks are slidably connected with the fixing plate.
Preferably, the upper side of the L-shaped rod is fixedly connected with a support frame, and the upper end of the support frame is fixedly connected with the first rack.
Preferably, the left end of the stop lever is provided with a plurality of uniform anti-skid grooves with the same size.
The invention has novel structure, ingenious conception and simple and convenient operation, and compared with the prior art, the invention has the following advantages:
1. the first transmission shaft of institute drives incomplete gear revolve, the rotation of incomplete gear drives the rotation of intermittent type time is done to the second gear, thereby the rotation of intermittent type time is done to the second transmission shaft, the intermittent type time of second transmission shaft rotates the process bevel gear set's transmission drives extending structure is reciprocal time rotation, thereby drives the intermittent type time rotation is done to the show board, and the teacher of being convenient for can carry out all-round show to the model, makes the student at different seats can be comprehensive observe the model, has avoided the student to watch the blind area of model because of the different production in position, has improved the teaching effect.
2. By moving the push-pull round block, the push-pull round block drives the second telescopic rod to move, the lantern ring slides along the first telescopic rod, and after the second telescopic rod moves to a proper position, the locking screw is screwed to fix the position of the second telescopic rod on the first telescopic rod, so that the purpose of adjusting the height of the display board is achieved, and a teacher can conveniently conduct computer teaching display.
3. The model is placed in the circular groove, the screw rod is screwed, and the screw rod drives the stop lever to move towards the placing groove for placing the block, so that the effect of fixing the model is achieved, and the display of different regular models is facilitated.
4. Storing structure is used for placing inactive teaching tool, when making things convenient for the teaching to use, can in time take out, reduces the waste time because of teaching aid's searching, makes the teacher can put more time in student's teaching, improves the efficiency of teaching.
5. The universal wheel has the characteristics of self-braking, and the device is convenient to move and fix.
Drawings
Fig. 1 is a schematic view of an axial measurement structure of a computer teaching display device according to the present invention.
FIG. 2 is a partial cross-sectional view of a housing of a computer teaching display of the present invention.
FIG. 3 is a schematic structural diagram of a box removing portion of the computer teaching display device according to the present invention.
Fig. 4 is a schematic view of the telescopic structure and the clamping structure of the computer teaching display device of the present invention.
Fig. 5 is a schematic view of a storage structure of the computer teaching display device according to the present invention.
Fig. 6 is a partial sectional view of a storage box of the computer teaching display device of the present invention.
Fig. 7 is a schematic diagram of a coil spring structure of a computer teaching display device according to the present invention.
Fig. 8 is a schematic view of a stop lever structure of the computer teaching display device according to the present invention.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-8, the present invention provides a computer teaching display device, which comprises a hollow box 1, wherein a driving shaft 8 is disposed in the middle of the box 1, the driving shaft 8 is connected to a Z-shaped rod 9 through a bevel gear set, the Z-shaped rod 9 is rotatably connected to the box 1, a sleeve 35 is rotatably connected to the right end of the Z-shaped rod 9, the sleeve 35 is slidably connected to an L-shaped rod 10, the L-shaped rod 10 and the right end are slidably connected to a first connecting rod 11, the first connecting rod 11 is fixedly connected to the box 1, a second connecting rod 12 is slidably connected to the upper side of the L-shaped rod 10, the second connecting rod 12 is fixedly connected to the box 1, a first rack 14 is fixedly connected to the upper end of the L-shaped rod 10, the first rack 14 is engaged with a first gear 16, a first transmission shaft 13 is fixedly connected to the middle of the first gear 16, and the first transmission shaft 13 is rotatably connected to the box 1, an incomplete gear 17 is fixedly connected to the right end of the first transmission shaft 13, the incomplete gear 17 is in meshing connection with a second gear 18, the second gear 18 is fixedly connected with a second transmission shaft 19, the second transmission shaft 19 is rotatably connected with the box body 1, a telescopic structure 2 is arranged on the left side of the second transmission shaft 19, a hollow display plate 24 is arranged on the upper side of the telescopic structure 2, and a clamping structure 5 is arranged on the upper side of the display plate 24; the rotation of the driving shaft 8 forms a structure that the display board 24 does intermittent time reciprocating rotation;
a power structure motor is fixedly connected to the front end of the driving shaft 8, the motor is started to drive the driving shaft 8 to rotate, the driving shaft 8 is driven by a bevel gear set to drive the Z-shaped rod 9 to rotate, the Z-shaped rod 9 drives the L-shaped rod 10 to reciprocate back and forth, the L-shaped rod 10 drives the first rack 14 to reciprocate back and forth, the first rack 14 drives the first gear 16 to reciprocate, the first gear 16 drives the first transmission shaft 13 to reciprocate, the first transmission shaft 13 drives the incomplete gear 17 to rotate, the rotation of the incomplete gear 17 drives the second gear 18 to rotate at an intermittent time, so that the second transmission shaft 19 rotates at an intermittent time, the intermittent time rotation of the second transmission shaft 19 is driven by the bevel gear set to drive the telescopic structure 2 to rotate at a reciprocating time, the display board 24 is driven to rotate in intermittent time, so that teachers can conveniently display the models in all directions, students in different seats can comprehensively observe the models, dead zones of the students for watching the models due to different positions are avoided, and the teaching effect is improved; the clamping structure 5 is used for fixing the model and preventing the model from falling off in the display process.
A placing groove is formed in the lower side of the box body 1, a storage structure 7 is arranged in the placing groove, and a handle 32 is arranged on the left side of the storage structure 7; the bottom end of the box body 1 is fixedly connected with a plurality of universal wheels 4 which have the same size and are uniformly distributed;
the storage structure 7 is used for placing a teaching tool for standby, and can be taken out in time when being convenient for teaching, so that the time waste caused by searching of teaching appliances is reduced, a teacher can put more time on the teaching of students, and the teaching efficiency is improved; the universal wheel 4 has the characteristic of self-braking, and is convenient to move and fix the device.
The telescopic structure 2 comprises a hollow first telescopic rod 20, an elongated slot 21 is formed in the left side of the first telescopic rod 20, a second telescopic rod 23 is connected to the inner wall of the first telescopic rod 20 in a sliding manner, a fixed block 36 is fixedly connected to the left end of the second telescopic rod 23, the fixed block 36 is connected with the elongated slot 21 in a sliding manner, a moving ring is fixedly connected to the left end of the fixed block 36, the moving ring is connected with the first telescopic rod 20 in a sliding manner, a push-pull round block 22 is fixedly connected to the left end of the moving ring, a locking screw is connected to the rear end of the moving ring in a threaded manner, the upper end of the second telescopic rod 23 is fixedly connected with the display plate 24, the lower side of the first telescopic rod 20 is rotatably connected with the box body 1, and the lower end of the first telescopic rod 20 is connected with the second transmission shaft 19 through a bevel gear set;
by moving the push-pull round block 22, the push-pull round block 22 drives the second telescopic rod 23 to move, the lantern ring slides along the first telescopic rod 20, and after the second telescopic rod 23 moves to a proper position, the locking screw is screwed to fix the position of the second telescopic rod 23 on the first telescopic rod 20, so that the purpose of adjusting the height of the display board 24 is achieved, and a teacher can conveniently perform computer teaching display.
The clamping structure 5 comprises a screw rod 27 in threaded connection with the display board 24, the front end of the screw rod 27 is rotatably connected with a stop lever 26, a placing block 25 is fixedly connected to the upper side of the front end of the inner wall of the display board 24, a through circular groove 37 is formed in the rear side of the placing block 25, a placing groove is formed in the middle of the placing block 25, and the stop lever 26 and the placing groove are in sliding connection through screwing of the screw rod 27.
The model is placed in the circular groove 37, the screw 27 is screwed, and the screw 27 drives the stop lever 26 to move towards the placing groove of the placing block 25, so that the effect of fixing the model is achieved, and the model with different rules is conveniently displayed.
The storage structure 7 comprises a short shaft 31 rotatably connected with the bottom end of the box body 1, a coil spring 28 is fixedly connected with the lower end of the short shaft 31, the other end of the coil spring 28 is fixedly connected with the bottom end of the box body 1, a third gear 30 is fixedly connected with the upper end of the short shaft 31, a second rack 29 is meshed and connected with the third gear 30, a storage box 34 is fixedly connected with the upper end of the second rack 29, the front section of the storage box 34 is fixedly connected with a handle 32, inverted T-shaped blocks 33 are fixedly connected with the front side and the rear side of the storage box 34, a fixing plate with a sliding groove is fixedly connected with the upper side of the bottom end of the box body 1, and the inverted T-shaped blocks 33 are slidably connected with the fixing plate.
By pulling the handle 32 outwards, the handle 32 drives the storage box 34 to move outwards, the storage box 34 drives the second rack 29 to move outwards, the second rack 29 drives the third gear 30 to rotate, the third gear 30 drives the short shaft 31 to rotate, the short shaft 31 drives the coil spring 28 to move, after the storage box 34 moves outwards for a proper distance, the teaching tool of the storage box 34 is taken out, the handle is released, and then the storage box 34 moves towards the direction of the box body 1 under the action force of the coil spring 28; after the teaching tool is used up, draw outward handle 32 places the teaching tool in storing box 34, prevent the phenomenon that the teaching tool loses.
The upper side of the L-shaped rod 10 is fixedly connected with a support frame 15, and the upper end of the support frame 15 is fixedly connected with the first rack 14.
The support frame 15 has the function of supporting and fixing.
The left end of the stop lever 26 is provided with a plurality of uniform anti-skid grooves with the same size.
The anti-slip groove is used for preventing the sliding phenomenon of the placing model.
When the multifunctional teaching tool is used, firstly, the height of the telescopic structure 2 is adjusted, a model is placed in the clamping structure 5, the motor is started to display the model, the handle 32 is pulled out, and the teaching tool in the storage box 34 is taken out.
Although the terms of the box 1, the telescopic structure 2, the universal wheel 4, the clamping structure 5, the storage structure 7, the driving shaft 8, the Z-shaped rod 9, the L-shaped rod 10, the first link 11, the second link 12, the first transmission shaft 13, the first rack 14, the support frame 15, the first gear 16, the incomplete gear 17, the second gear 18, the second transmission shaft 19, the first telescopic rod 20, the long slot 21, the push-pull round block 22, the second telescopic rod 23, the display plate 24, the placement block 25, the stop lever 26, the screw 27, the coil spring 28, the second rack 29, the third gear 30, the short shaft 31, the pull handle 32, the inverted T-shaped block 33, the storage box 34, the sleeve 35, the fixed block 36, the circular slot 37, etc. are used more often, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to the spirit of the present invention.
Claims (4)
1. The utility model provides a computer teaching display device which characterized in that: comprises a hollow box body (1), a driving shaft (8) is arranged in the middle of the box body (1), the driving shaft (8) is connected with a Z-shaped rod (9) through a bevel gear set, the Z-shaped rod (9) is rotatably connected with the box body (1), the right end of the Z-shaped rod (9) is rotatably connected with a sleeve (35), the sleeve (35) is slidably connected with an L-shaped rod (10), the L-shaped rod (10) and the right end are slidably connected with a first connecting rod (11), the first connecting rod (11) is fixedly connected with the box body (1), the upper side of the L-shaped rod (10) is slidably connected with a second connecting rod (12), the second connecting rod (12) is fixedly connected with the box body (1), the upper end of the L-shaped rod (10) is fixedly connected with a first rack (14), the first rack (14) is engaged with a first gear (16), a first transmission shaft (13) is fixedly connected with the middle of the first gear (16), the first transmission shaft (13) is rotatably connected with the box body (1), an incomplete gear (17) is fixedly connected to the right end of the first transmission shaft (13), the incomplete gear (17) is connected with a second gear (18) in a meshed mode, the second gear (18) is fixedly connected with a second transmission shaft (19), the second transmission shaft (19) is rotatably connected with the box body (1), a telescopic structure (2) is arranged on the left side of the second transmission shaft (19), a hollow display board (24) is arranged on the upper side of the telescopic structure (2), and a clamping structure (5) is arranged on the upper side of the display board (24); the rotation of the driving shaft (8) forms a structure that the display board (24) does intermittent time reciprocating rotation;
a placing groove is formed in the lower side of the box body (1), a storage structure (7) is arranged in the placing groove, and a handle (32) is arranged on the left side of the storage structure (7); the bottom end of the box body (1) is fixedly connected with a plurality of universal wheels (4) which have the same size and are uniformly distributed;
the telescopic structure (2) comprises a hollow first telescopic rod (20), the left side of the first telescopic rod (20) is provided with a long groove (21), the inner wall of the first telescopic rod (20) is connected with a second telescopic rod (23) in a sliding way, the left end of the second telescopic rod (23) is fixedly connected with a fixed block (36), the fixed block (36) is connected with the long groove (21) in a sliding way, the left end of the fixed block (36) is fixedly connected with a movable ring, the moving ring is connected with the first telescopic rod (20) in a sliding way, the left end of the moving ring is fixedly connected with a push-pull round block (22), the rear end of the movable ring is in threaded connection with a locking screw, the upper end of the second telescopic rod (23) is fixedly connected with the display board (24), the lower side of the first telescopic rod (20) is rotationally connected with the box body (1), the lower end of the first telescopic rod (20) is connected with the second transmission shaft (19) through a bevel gear set;
the clamping structure (5) comprises a screw rod (27) in threaded connection with the display board (24), the front end of the screw rod (27) is rotated to connect a stop lever (26), a placing block (25) is fixedly connected to the upper side of the front end of the inner wall of the display board (24), a through circular groove (37) is formed in the rear side of the placing block (25), a placing groove is formed in the middle of the placing block (25), and the screw rod (27) is screwed to form a structure of the stop lever (26) and the placing groove in sliding connection.
2. A computer teaching display apparatus as claimed in claim 1, wherein: the storage structure (7) comprises a short shaft (31) rotatably connected with the bottom end of the box body (1), a coil spring (28) is fixedly connected with the lower end of the short shaft (31), the other end of the coil spring (28) is fixedly connected with the bottom end of the box body (1), a third gear (30) is fixedly connected with the upper end of the short shaft (31), a second rack (29) is meshed with the third gear (30), a storage box (34) is fixedly connected with the upper end of the second rack (29), the front section of the storage box (34) is fixedly connected with the handle (32), a T-shaped block (33) is inverted fixedly connected with the front side and the rear side of the storage box (34), a fixing plate with a sliding groove is formed in the upper side of the bottom end of the box body (1), and the T-shaped block (33) is inverted and is slidably connected with the fixing plate.
3. A computer teaching display apparatus as claimed in claim 1, wherein: l shape pole (10) upside fixed connection support frame (15), support frame (15) upper end with first rack (14) fixed connection.
4. A computer teaching display apparatus as claimed in claim 1, wherein: the left end of the stop lever (26) is provided with a plurality of uniform anti-skid grooves with the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503476.2A CN111583757B (en) | 2020-06-05 | 2020-06-05 | Computer teaching display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503476.2A CN111583757B (en) | 2020-06-05 | 2020-06-05 | Computer teaching display device |
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| CN111583757A CN111583757A (en) | 2020-08-25 |
| CN111583757B true CN111583757B (en) | 2021-12-28 |
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| CN202010503476.2A Expired - Fee Related CN111583757B (en) | 2020-06-05 | 2020-06-05 | Computer teaching display device |
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| CN111899604A (en) * | 2020-09-22 | 2020-11-06 | 河南工学院 | Multipurpose adjustable economic management teaching display device |
| CN113436516B (en) * | 2021-07-26 | 2022-04-26 | 上海交通大学医学院附属第九人民医院 | Ear-nose-throat teaching mould |
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| CN105057373A (en) * | 2015-08-06 | 2015-11-18 | 李千林 | Cold-drawing machine for machining hydraulic steel pipes |
| US10373517B2 (en) * | 2015-08-12 | 2019-08-06 | Illinois Tool Works Inc. | Simulation stick welding electrode holder systems and methods |
| CN208318746U (en) * | 2017-11-17 | 2019-01-04 | 宁波方太厨具有限公司 | A kind of pass drawer mechanism |
| CN109036189A (en) * | 2018-08-17 | 2018-12-18 | 孙同娟 | A kind of combined advertisement frame of rotary multi |
| CN110299055A (en) * | 2019-05-09 | 2019-10-01 | 西南石油大学 | A kind of observation and control technology custom circuit model display device |
| CN110833449B (en) * | 2019-12-03 | 2020-11-03 | 河南省中医院（河南中医药大学第二附属医院） | An orthopedic positioning guide pin guide device |
| CN110949263A (en) * | 2019-12-27 | 2020-04-03 | 宁波继峰汽车零部件股份有限公司 | A car central control extending storage box |
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