CN113257084B - Teaching display device - Google Patents
Teaching display device Download PDFInfo
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- CN113257084B CN113257084B CN202110605746.5A CN202110605746A CN113257084B CN 113257084 B CN113257084 B CN 113257084B CN 202110605746 A CN202110605746 A CN 202110605746A CN 113257084 B CN113257084 B CN 113257084B
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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
Abstract
The invention relates to the teaching field, in particular to a teaching display device, which comprises: an adjustment assembly, wherein the adjustment assembly comprises: the lifting mechanism is arranged in the supporting box, and the direction adjusting mechanism is connected with the output end of the lifting mechanism; the show subassembly is connected with position adjustment mechanism output, wherein, the show subassembly includes: the device comprises a placing mechanism, a pressing mechanism and a linkage mechanism, wherein the placing mechanism is fixed at the output end of the direction adjusting mechanism, the pressing mechanism can slide on the placing mechanism, and the linkage mechanism is fixed on the inner side of the pressing mechanism. According to the teaching display device provided by the invention, through the design of the pressing component, teaching tools such as books to be displayed can be conveniently pressed, physical strength is greatly saved in the teaching process, the distance of the pressing component can be adjusted, and the contents of the books with different sizes can be conveniently pressed and fixed.
Description
Technical Field
The invention relates to the field of teaching, in particular to a teaching display device.
Background
When teaching, often need show the study content towards people, for the show of the study content of convenience, display device need be used to convenient teaching.
Although the existing teaching display device can display teaching contents, the teaching display device is often realized by writing with chalk or a marking pen when displaying the contents, and the contents to be displayed are not easy to fix, so that the teaching display device is needed to solve the problems.
Disclosure of Invention
The embodiment of the invention aims to provide a teaching display device, aiming at solving the following problems: the existing teaching display is not easy to fix the contents to be displayed.
The embodiment of the invention is realized in such a way that the teaching display device comprises: an adjustment assembly for adjusting a display position of the device body, wherein the adjustment assembly comprises: the device comprises a supporting box, a lifting mechanism and a position adjusting mechanism, wherein the lifting mechanism is arranged in the supporting box and used for adjusting the height of the device body, and the position adjusting mechanism is connected with the output end of the lifting mechanism and used for adjusting the position of the content displayed by the device body; show subassembly is connected with position adjustment mechanism output for the fixed teaching content that will demonstrate, wherein, the show subassembly includes: the device comprises a placing mechanism, a pressing mechanism and a linkage mechanism, wherein the placing mechanism is fixed at the output end of the position adjusting mechanism, the pressing mechanism can slide on the placing mechanism, and the linkage mechanism is fixed on the inner side of the pressing mechanism and used for controlling the pressing mechanisms on two sides to move close to or away from each other.
Preferably, the lifting mechanism includes: the supporting groove is fixed on the base and is arranged on the other side of the roller; the driving mechanism is arranged in the supporting groove, can rotate on the supporting groove and is used for rotationally controlling the height of the device body; the coordination grooves are formed on two sides of the supporting groove, and slide rails for the device body to move up and down are arranged in the coordination grooves; the coordination block is arranged in the coordination groove in a matched manner and can slide on a slide rail on the coordination groove; and the lifting plate is fixed on the positioning block and serves as an output end of the lifting mechanism.
Preferably, the drive mechanism comprises: the power piece is fixed on the support groove, and the output end of the power piece extends to the inner side of the support groove; the first rotating shaft penetrates through the supporting groove and can rotate in the supporting groove, and one end of the first rotating shaft is fixedly connected with the output end of the power part; the two ends of a rotating shaft of the pushing cam are connected with the first rotating shaft; the eccentric wheel shaft of the first gear is fixedly connected with the first rotating shaft; the second gear is meshed with the first gear and can be driven by the first gear to rotate; the second rotating shaft is fixedly connected with the second gear eccentric rotating shaft, two ends of the second rotating shaft are connected to the coordination block, and the second rotating shaft can rotate on the coordination block; and the rotating wheels are distributed on two sides of the second gear, wheel shafts are fixedly connected with the second rotating shaft, and the rotating wheels are in contact with the pushing cam and can drive the rotating wheels to move up and down.
Preferably, the orientation adjustment mechanism includes: a first fixing plate; one end of each vertical rod is fixed with the first fixing plate and is provided with at least two groups; the second fixing plate is fixed at the other end of the vertical rod; the extrusion rod is arranged between the two groups of vertical rods and can push the vertical rods to rotate, and two ends of the extrusion rod are arranged on the support box; one end of the locking component is connected with the extrusion rod and used for locking and fixing the rotation state of the extrusion rod; and the rotating handle is connected with the extrusion rod through a locking component.
Preferably, the locking member comprises: the two ends of the rotary drum are respectively connected with the extrusion rod and the rotary handle; the positioning holes are formed in the rotary drum and distributed on the periphery of the rotary drum; the coordination column is matched with the coordination hole of the rotary drum and can enter the coordination hole to fix the rotary drum; the pull rod is fixed on the positioning column; the fixed plate is sleeved on the pull rod, the pull rod can slide on the fixed plate, and the fixed plate is fixedly connected with the supporting box; the first elastic piece is fixed between the fixing plate and the handle of the pull rod.
Preferably, the placement mechanism comprises: the fixed sleeve is fixedly connected with the output end of the direction adjusting mechanism; the display board is connected with the fixed sleeve and used for displaying teaching contents; the guide way is arranged on the side surface of the display board.
Preferably, the pressing mechanism includes: the guide wheel is arranged in the guide groove in a matching way and can slide in the guide groove; the mounting groove is fixed on the rotating shaft of the guide wheel; one end of the sliding column is fixedly connected with the mounting groove; the pressing plate is sleeved on the sliding column and can slide in the sliding column; the second elastic piece is fixed between the pressing plate and the baffle of the sliding column; the pull handle is fixedly connected with the pressure plate.
Preferably, the linkage mechanism includes: the linkage gear is arranged on the display assembly and is positioned on a group of symmetrical shafts of the pressing mechanisms; and the linkage rack is provided with a group of linkage racks which are meshed with the linkage gear, and the end, far away from each other, of the linkage racks is fixedly connected with the pressing mechanism.
According to the teaching display device provided by the invention, through the design of the pressing component, teaching tools such as books to be displayed can be conveniently pressed, physical strength is greatly saved in the teaching process, the distance of the pressing component can be adjusted, and the contents of the books with different sizes can be conveniently pressed and fixed.
Drawings
Fig. 1 is a schematic view of a teaching display device.
FIG. 2 is a schematic view of an adjustment assembly of the teaching display device.
FIG. 3 is a schematic view of a lifting mechanism of the teaching demonstration device.
FIG. 4 is a schematic view of an orientation adjustment mechanism of the teaching display device.
Fig. 5 is a top view of a display assembly of the teaching display device.
In the drawings: 1. a base; 2. a roller; 3. an adjustment assembly; 4. a support box; 5. a lifting mechanism; 6. an orientation adjustment mechanism; 7. a display assembly; 51. a support groove; 52. a drive mechanism; 53. a positioning groove; 54. a bit matching block; 55. lifting the plate; 521. a power member; 522. a first rotating shaft; 523. pushing the cam; 524. a first gear; 525. a second gear; 526. a second rotating shaft; 527. a rotating wheel; 61. a support sleeve; 62. rotating the block; 63. a first fixing plate; 64. a vertical rod; 65. a second fixing plate; 66. an extrusion stem; 67. a locking member; 68. turning a handle; 671. a rotating drum; 672. a registration hole; 673. a positioning column; 674. a pull rod; 675. a fixing plate; 676. a first elastic member; 70-placing mechanism, 71 and fixing sleeve; 72. a display board; 73. a guide groove; 74. a hold-down mechanism; 75. a linkage mechanism; 741. a guide wheel; 742. mounting grooves; 743. a traveler; 744. pressing a plate; 745. a second elastic member; 746. pulling a handle; 751. a linkage gear; 752. and (4) linking the racks.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Referring to fig. 1 and fig. 2, an instructional display device according to an embodiment of the present invention includes:
an adjusting assembly 3 for adjusting the display position of the device body, wherein the adjusting assembly 3 comprises: the device comprises a supporting box 4, a lifting mechanism 5 and a direction adjusting mechanism 6, wherein the lifting mechanism 5 is arranged in the supporting box 4 and used for adjusting the height of the device body, and the direction adjusting mechanism 6 is connected with the output end of the lifting mechanism 5 and used for adjusting the direction of the content displayed by the device body; show subassembly 7 is connected with 6 output ends of position adjustment mechanism for the fixed teaching content that will demonstrate, wherein, the show subassembly includes: the device comprises a placing mechanism 70, a pressing mechanism 74 and a linkage mechanism 75, wherein the placing mechanism 70 is fixed at the output end of the position adjusting mechanism 6, the pressing mechanism 74 can slide on the placing mechanism 70, and the linkage mechanism 75 is fixed at the inner side of the pressing mechanism 74 and is used for controlling the pressing mechanisms 74 at the two sides to move close to or away from each other.
In addition, the display device also comprises a base 1 and a roller 2 arranged on one side of the base 1 and used for controlling the movement of the device body.
This embodiment is when specifically using, at first transports the device position that will impart knowledge to students through gyro wheel 2, then opens the elevating system 5 of adjusting part 3 according to actual demand and can adjust the height that show subassembly 7 demonstrates, opens position adjusting mechanism 6 and can adjust the position that will demonstrate, can compress tightly fixedly in showing subassembly 7 with waiting to demonstrate the content of teaching afterwards, can demonstrate the teaching.
As shown in fig. 2 and 3, as a preferred embodiment of the present invention, the lifting mechanism 5 includes: a support groove 51 fixed on the base 1 and disposed at the other side of the roller 2; a driving mechanism 52 installed in the supporting groove 51 and rotatable on the supporting groove 51 for rotationally controlling the height of the apparatus body; a positioning groove 53 which is arranged at two sides of the supporting groove 51 and in which a slide rail for the device body to move up and down is arranged in the positioning groove 53; a positioning block 54 which is provided in the positioning groove 53 in a fitting manner and is slidable on a slide rail provided on the positioning groove 53; and a lifting plate 55 fixed to the positioning block 54 as an output end of the lifting mechanism 5.
In the specific use of the embodiment, the driving mechanism 52 is turned on, and the driving mechanism 52 drives the positioning block 54 to move upwards or downwards along the positioning slot 53, so as to drive the lifting plate 55 to move upwards or downwards, and further the position adjusting mechanism 6 pushes the display assembly 7 to ascend or descend, thereby completing the height adjustment of the device.
As shown in fig. 3, as a preferred embodiment of the present invention, the driving mechanism 52 includes: a power member 521 fixed on the support groove 51 and having an output end extending to the inside of the support groove 51; a first rotating shaft 522 passing through the supporting slot 51 and capable of rotating in the supporting slot 51, wherein one end of the first rotating shaft 522 is fixedly connected with the output end of the power element 521; a push cam 523 having both ends of a rotation shaft connected to the first rotation shaft 522; a first gear 524, the eccentric axle of which is fixedly connected with the first rotating shaft 522; a second gear 525 engaged with the first gear 524 and rotated by the first gear 524; a second rotating shaft 526 fixedly connected with the eccentric rotating shaft of the second gear 525 and having both ends connected to the coordination block 54, the second rotating shaft 526 being rotatable on the coordination block 54; and the rotating wheels 527 are distributed on two sides of the second gear 525, the wheel shafts of the rotating wheels are fixedly connected with the second rotating shaft 526, and the rotating wheels 527 are in contact with the pushing cam 523 and can drive the rotating wheels 527 to move up and down.
When the embodiment is used specifically, the power element 521 is turned on, the output shaft of the power element 521 drives the first rotating shaft 522 to rotate, the first rotating shaft 522 rotates to drive the pushing cam 523 to rotate, the pushing cam 523 rotates to drive the rotating wheel 527 to rotate and simultaneously move upwards or downwards, the second rotating shaft 526 can support the rotation of the rotating wheel 527, and meanwhile, the first gear 524 and the second gear 525 rotate in an engaged manner to ensure the stability of the rotation of the rotating wheel 527, so as to drive the lifting plate 55 to stably move upwards or downwards.
In this embodiment, the power element 521 may be an electric motor or a hydraulic motor, as long as it can drive the first rotating shaft 522 to stably rotate, and is not limited in this embodiment.
As shown in fig. 2 and 4, as a preferred embodiment of the present invention, the orientation adjusting mechanism 6 includes: a first fixing plate 63; one end of the vertical rod 64 is fixed to the first fixing plate 63 and is provided with at least two groups; a second fixing plate 65 fixed to the other end of the vertical rod 64; the extrusion rod 66 is arranged between the two groups of vertical rods 64 and can push the vertical rods 64 to rotate, and two ends of the extrusion rod 66 are arranged on the support box 4; a locking member 67, one end of which is connected to the pressing rod 66, for locking and fixing the rotation state of the pressing rod 66; a rotating handle 68, which is connected to the pressing rod 66 by a locking member 67.
In addition, a rotating block 62 is further connected below the first fixing plate 63, a supporting sleeve 61 for supporting the rotating block 62 is arranged outside the rotating block 62 in a matching manner, and the supporting sleeve 61 is fixedly installed on the lifting mechanism 5.
When the direction is adjusted, the locking component 67 is pulled firstly, so that the rotating handle 68 is in a relaxed state, the rotating handle 68 is rotated, the extruding rod 66 is rotated under the driving of the rotating handle 68, the extruding rod 66 is rotated to drive the vertical rod 64 to do reciprocating rotation motion, so that the rotating block 62 below the first fixing plate 63 is driven to rotate along the supporting sleeve 61, the rotating stability of the second fixing plate 65 is ensured, the second fixing plate 65 is stably rotated to drive the display assembly 7 to stably rotate, and the direction adjustment of the display assembly 7 is realized.
In the present embodiment, the length of the vertical rod 64 may provide a distance for the lifting and lowering of the lifting mechanism 5, so that the lifting and lowering can be performed while the orientation is adjusted.
As shown in fig. 2, as a preferred embodiment of the present invention, the locking part 67 includes: a rotating cylinder 671, both ends of which are respectively connected with the extrusion rod 66 and the rotating handle 68; the positioning holes 672 are formed in the rotary drum 671 and distributed on the periphery of the rotary drum 671; the positioning column 673 is matched with the positioning hole 672 of the rotary drum 671 and can enter the positioning hole 672 to fix the rotary drum 671; a pull rod 674 fixed on the registration column 673; the fixing plate 675 is sleeved on the pull rod 674, the pull rod 674 can slide on the fixing plate 675, and the fixing plate 675 is fixedly connected with the supporting box 4; a first resilient member 676 is secured between the stationary plate 675 and the handle of the pull rod 674.
In this embodiment, the first elastic element 676 can be a spring or an elastic belt, as long as it can push the positioning column 673 to return, which is not limited herein.
During the orientation adjustment, the pull rod 674 is pulled up, the pull rod 674 moves upwards along the fixing plate 675, the first elastic member 676 is simultaneously stretched, the coordination column 673 is simultaneously driven to leave the coordination hole 672 of the rotary drum 671, the rotary drum 671 is loosened, the orientation adjustment can be carried out, after the adjustment is completed, the pull rod 674 is loosened, the coordination column 673 enters the coordination hole 672 of the rotary drum 671 under the pulling of the first elastic member 676, and the locking process is completed again.
As shown in fig. 1 and 5, the placement mechanism 70 includes: a fixing sleeve 71 fixedly connected with the output end of the direction adjusting mechanism 6; the display board 72 is connected with the fixed sleeve 71 and used for displaying teaching contents; and a guide groove 73 opened on the side of the display board 72.
In the embodiment, when the book shelf is used specifically, the fixing sleeve 71 can fix the display board 72 at the output end of the lifting mechanism 5, then, the contents to be displayed are put on the display board 72, when the position of the pressing mechanism 74 is adjusted, the pressing mechanism 74 can slide on the guide groove 73, and after the position adjustment is completed, the pressing mechanism 74 is controlled to press the displayed books equally.
As shown in fig. 1 and 5, as a preferred embodiment of the present invention, the pressing mechanism 74 includes: a guide wheel 741 fitted in the guide groove 73 and slidable in the guide groove 73; a mounting groove 742 fixed on the rotating shaft of the guide wheel 741; a sliding column 743, one end of which is fixedly connected with the mounting groove 742; a pressure plate 744 sleeved on the strut 743 and capable of sliding in the strut 743; a second elastic member 745 fixed between the pressing plate 744 and the shutter of the spool 743; and the pull handle 746 is fixedly connected with the pressure plate 744.
When the book is pressed, the pull handle 746 is pulled, the pull handle 746 drives the press plate 744 to move upwards and compress the second elastic member 745, the pull handle 746 is released after the contents to be displayed are put on the display board 72, and the press plate 744 moves downwards along the slide column 743 and presses and fixes the displayed book with equal pressure under the pressing action of the second elastic member 745.
As shown in fig. 5, as a preferred embodiment of the present invention, the linkage mechanism 75 includes: a linkage gear 751 mounted on the display assembly 7 and on a set of axes of symmetry of the hold-down mechanism 74; and a set of linked racks 752 which are engaged with the linked gears 751, wherein the far ends of the set of linked racks 752 are fixedly connected with the pressing mechanism 74.
In a specific use of the embodiment, when the pressing mechanism 74 moves, the linked racks 752 on the two sides can move toward or away from each other by the linked gear 751, so as to drive the pressing mechanisms 74 on the two sides to move away from or toward each other.
In this embodiment, if the two side pressing mechanisms 74 are linked, a linkage rod may be used instead, and the structure is not limited to this.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a teaching display device, contains the device body, its characterized in that includes:
an adjustment assembly for adjusting a display position of the device body, wherein the adjustment assembly comprises: supporting box, elevating system and position adjustment mechanism, elevating system set up in supporting box for the height of adjusting device body, position adjustment mechanism is connected with the elevating system output, is used for the position of the content of adjusting device body show, position adjustment mechanism includes:
A first fixing plate;
one end of each vertical rod is fixed with the first fixing plate and is provided with at least two groups;
the second fixing plate is fixed at the other end of the vertical rod;
the extrusion rod is arranged between the two groups of vertical rods and can push the vertical rods to rotate, and two ends of the extrusion rod are arranged on the support box;
one end of the locking component is connected with the extrusion rod and used for locking and fixing the rotation state of the extrusion rod;
a rotating handle connected to the extrusion rod through a locking member;
show subassembly is connected with position adjustment mechanism output for the fixed teaching content that will demonstrate, wherein, the show subassembly includes: the device comprises a placing mechanism, a pressing mechanism and a linkage mechanism, wherein the placing mechanism is fixed at the output end of the position adjusting mechanism, the pressing mechanism can slide on the placing mechanism, and the linkage mechanism is fixed on the inner side of the pressing mechanism and used for controlling the pressing mechanisms on two sides to move close to or away from each other.
2. The instructional display of claim 1 wherein the lifting mechanism comprises:
the supporting groove is fixed on the base and is arranged on the other side of the roller;
the driving mechanism is arranged in the supporting groove, can rotate on the supporting groove and is used for rotationally controlling the height of the device body;
The coordination grooves are formed on two sides of the support groove, and sliding rails for the device body to move up and down are arranged in the coordination grooves;
the coordination block is arranged in the coordination groove in a matched manner and can slide on a slide rail on the coordination groove;
and the lifting plate is fixed on the positioning block and serves as the output end of the lifting mechanism.
3. The instructional display of claim 2 wherein the drive mechanism comprises:
the power piece is fixed on the support groove, and the output end of the power piece extends to the inner side of the support groove;
the first rotating shaft penetrates through the supporting groove and can rotate in the supporting groove, and one end of the first rotating shaft is fixedly connected with the output end of the power part;
the two ends of a rotating shaft of the pushing cam are connected with the first rotating shaft;
the eccentric wheel shaft of the first gear is fixedly connected with the first rotating shaft;
the second gear is meshed with the first gear and can be driven by the first gear to rotate;
the second rotating shaft is fixedly connected with the second gear eccentric rotating shaft, two ends of the second rotating shaft are connected to the coordination block, and the second rotating shaft can rotate on the coordination block;
and the rotating wheels are distributed on two sides of the second gear, wheel shafts are fixedly connected with the second rotating shaft, and the rotating wheels are in contact with the pushing cam and can drive the rotating wheels to move up and down.
4. The instructional display of claim 1 wherein the locking member comprises:
The two ends of the rotary drum are respectively connected with the extrusion rod and the rotary handle;
the positioning holes are formed in the rotary drum and distributed on the periphery of the rotary drum;
the coordination column is matched with the coordination hole of the rotary drum and can enter the coordination hole to fix the rotary drum;
the pull rod is fixed on the positioning column;
the fixed plate is sleeved on the pull rod, the pull rod can slide on the fixed plate, and the fixed plate is fixedly connected with the supporting box;
the first elastic piece is fixed between the fixing plate and the handle of the pull rod.
5. The instructional display of claim 1 wherein the placement mechanism comprises:
the fixed sleeve is fixedly connected with the output end of the direction adjusting mechanism;
the display board is connected with the fixed sleeve and used for displaying teaching contents;
the guide way is arranged on the side surface of the display board.
6. The instructional display of claim 1 wherein the hold down mechanism comprises:
the guide wheel is arranged in the guide groove in a matching way and can slide in the guide groove;
the mounting groove is fixed on the rotating shaft of the guide wheel;
one end of the sliding column is fixedly connected with the mounting groove;
the pressing plate is sleeved on the sliding column and can slide in the sliding column;
the second elastic piece is fixed between the pressing plate and the baffle of the sliding column;
The pull handle is fixedly connected with the pressure plate.
7. The instructional display of claim 1 wherein the linkage comprises:
the linkage gear is arranged on the display assembly and is positioned on a group of symmetrical shafts of the pressing mechanisms;
and the linkage rack is provided with a group of linkage racks which are meshed with the linkage gear, and the end, far away from each other, of the linkage racks is fixedly connected with the pressing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110605746.5A CN113257084B (en) | 2021-06-01 | 2021-06-01 | Teaching display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110605746.5A CN113257084B (en) | 2021-06-01 | 2021-06-01 | Teaching display device |
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| CN113257084A CN113257084A (en) | 2021-08-13 |
| CN113257084B true CN113257084B (en) | 2022-07-29 |
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| CN212675773U (en) * | 2020-09-11 | 2021-03-09 | 广西华侨学校 | Display device that chinese teaching was used |
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| AT407309B (en) * | 1999-10-07 | 2001-02-26 | Thurner Joerg Ing | Device for training (instructing, teaching) drivers of motor vehicles |
| CN108154755B (en) * | 2018-01-19 | 2019-08-06 | 重庆电子工程职业学院 | A kind of planar design plate type teaching displaying device |
| CN208993394U (en) * | 2018-09-20 | 2019-06-18 | 杭州职业技术学院 | A kind of Art Design drawing paper fixed frame |
| CN209733032U (en) * | 2019-01-24 | 2019-12-06 | 陕西理工大学 | Small-size file storage rack convenient to mathematical education file is deposited |
| CN209912346U (en) * | 2019-04-01 | 2020-01-07 | 郑州铁路职业技术学院 | Planar design model display device |
| CN211044666U (en) * | 2020-01-06 | 2020-07-17 | 王嘉徽 | Law case display device |
| CN211529400U (en) * | 2020-01-08 | 2020-09-18 | 湖南化工职业技术学院（湖南工业高级技工学校） | Teaching instrument |
| CN111199671A (en) * | 2020-03-17 | 2020-05-26 | 莱芜职业技术学院 | Display apparatus system for biological teaching |
| CN111524424A (en) * | 2020-04-20 | 2020-08-11 | 张小玲 | International trade course teaching display device |
| CN211928816U (en) * | 2020-05-15 | 2020-11-13 | 吉安职业技术学院 | Ideological and political education case display system |
| CN213245057U (en) * | 2020-05-31 | 2021-05-21 | 杭州锐翌科技有限公司 | Hardware machining bending device convenient to get piece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212675773U (en) * | 2020-09-11 | 2021-03-09 | 广西华侨学校 | Display device that chinese teaching was used |
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Effective date of registration: 20230720 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 067001 No.2 Xueyuan Road, Chengde hi tech Industrial Development Zone, Hebei Province Patentee before: Hebei Petroleum University of Technology Effective date of registration: 20230720 Address after: 710000 Room 208, B1 Building, West Yungu Phase I, Fengxi New City, Xixian New District, Xi'an City, Shaanxi Province Patentee after: Shaanxi Jinyuanfang Trading Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. |
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