CN215182482U - Tool for learning historical events - Google Patents
Tool for learning historical events Download PDFInfo
- Publication number
- CN215182482U CN215182482U CN202120104202.6U CN202120104202U CN215182482U CN 215182482 U CN215182482 U CN 215182482U CN 202120104202 U CN202120104202 U CN 202120104202U CN 215182482 U CN215182482 U CN 215182482U
- Authority
- CN
- China
- Prior art keywords
- plate
- frame
- fixed plate
- teaching
- historical event
- 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.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000005192 partition Methods 0.000 claims description 9
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The application discloses a tool for learning historical events, which comprises a bottom plate, a teaching mechanism, a lifting mechanism and a containing mechanism; the teaching mechanism comprises a fixing plate, a frame and a winding roller; the lifting mechanism comprises an electric push rod, a sleeve and a guide rod; the storage mechanism comprises a limiting plate, a writing board and a supporting plate. The fixing plate is arranged to realize storage of the winding roller, and record switching of historical events can be realized by rotating the winding roller during teaching, so that teaching of teachers is facilitated, and operation convenience is improved; the lifting frame can realize the lifting of the learning tool, can adapt to the use of different teachers, and is provided with the sleeve and the guide rod to achieve good limiting and ensure stable movement; be provided with the backup pad and conveniently impart knowledge to students placing of card of usefulness to it can conveniently write the teaching to be provided with the clipboard, improves the convenience of use, is favorable to jointly imparting knowledge to students, and backup pad and clipboard accomodate the convenience, improves learning tools's practicality.
Description
Technical Field
The application relates to a learning tool, in particular to a tool for learning historical events.
Background
History generally refers to human social history, which is a subject for recording and explaining a series of historical events of human activity processes, and is a record, interpretation and research of past events and behavior systems, and is used as a reference for future events, the history is extended, is cultural inheritance, accumulation and expansion, is a track of human civilization, and is a process of objective world motion development, and can be divided into a natural history and a human social history, the evolution process of the historical in society is called history, mystery is remembered and burned to the world of meditation, generally refers to events occurring in people, the historical history corresponds to the concept of the historical history, the historical history also has broad and narrow meanings, in broad sense, the historical history can refer to all events occurring in the past and is not necessarily connected with the human social history, and the historical history in this meaning is called historical ontology in philosophy, such as the universal historical history, interpretation and the historical history of the historical events occurring in the future can be used in the future, and the future, the historical history can be used in the future, and can be used in the fields of the human society, such as the human society, and the fields of the human society, and the fields of the human society, and the fields of the human history, and the human society, and the human history of the human history, and the human history of the human history of the history, and the history of the history, The history of the earth, birds and the like generally only studies social history, and it is noted that the history is generated at any time and is a faithful record of the free activities of people in the past.
History refers to human social history, important historical events are not easy to be fully mastered during learning, the historical events are not easy to be replaced during the learning process, and combined teaching with blackboard writing and card teaching is not easy to be carried out, so that the teaching efficiency is influenced. Accordingly, a tool for learning historical events is proposed to solve the above problems.
Disclosure of Invention
A tool for learning historical events comprises a bottom plate, a teaching mechanism, a lifting mechanism and a containing mechanism;
the teaching mechanism comprises fixed plates, a frame and a winding roller, wherein the fixed plates are fixedly connected through the frame, the inner part of each fixed plate is rotatably connected with the winding roller, a limiting block is arranged at the end part of the winding roller, the winding roller is fixedly connected with a fixed disc, and the bottom of the fixed disc is rotatably connected with a handle;
the lifting mechanism comprises an electric push rod, a sleeve and a guide rod, the bottom plate and the frame are fixedly connected through the electric push rod, the bottom plate and the frame are respectively and fixedly connected with the sleeve and the guide rod, the guide rod is movably sleeved with the interior of the sleeve, and a storage battery is fixedly arranged at the bottom of the frame;
the storage mechanism comprises a limiting plate, a writing board and a supporting plate, the limiting plate is fixedly connected with the frame and the side wall of the fixing plate, the writing board is arranged between the limiting plates, the supporting plate is rotatably connected with the top of the fixing plate, and a partition plate and a magnet are fixedly connected with the side wall of the supporting plate.
Further, the quantity of fixed plate is two, two the fixed plate is located the frame both sides respectively, every the fixed plate is inside all to be equipped with the wind-up roll, just the winding of wind-up roll surface has the stock form.
Further, an opening used for moving the roll paper is formed in the joint of the fixing plate and the frame, the roll paper is located inside the frame, and illuminating lamps are fixedly mounted on two sides of the frame.
Furthermore, the middle part of the bottom plate is provided with an electric push rod, two sides of the electric push rod are respectively provided with two symmetrically distributed sleeves, and the insides of the sleeves are connected with the guide rods in a sliding manner.
Further, the fixed plate lateral wall is connected with the knob rotation, knob one end contact has the clipboard, the fixed plate top is equipped with the couple of two L shape structures, couple and backup pad bottom joint.
Further, the backup pad is L shape structure, backup pad and fixed plate junction are located its one side, the backup pad bottom is connected with the laminating of fixed plate and frame top surface.
Furthermore, the side wall of the supporting plate is provided with a plurality of partition plates which are vertically distributed, magnets are arranged in spaces formed among the partition plates, and the magnets are connected with cards for historical event learning in an adsorption mode.
Further, the wind-up roll bottom extends to the fixed plate bottom, be equipped with the frame of U-shaped structure between the fixed plate, just inside light and the battery of frame are located the stock form both sides respectively, the battery respectively with light and electric putter electric connection.
Further, the quantity of limiting plate is two, two the limiting plate all is L shape structure, the limiting plate is equipped with two clipboards, sliding connection between clipboard and the limiting plate.
Furthermore, the areas of the supporting plate, the frame and the fixing plate are the same, the supporting plate, the frame and the fixing plate are connected in a surface fit mode, and the distance between the fixing plates is the same as the sum of the lengths of the two writing plates.
The beneficial effect of this application is: the application provides a historical event learns and uses instrument with accomodate the function and can improve teaching efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic overall perspective view of an embodiment of the present application;
FIG. 2 is a schematic diagram of an internal elevation view according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an external front view structure according to an embodiment of the present application;
FIG. 4 is a schematic rear view of an embodiment of the present application;
FIG. 5 is a schematic side view of an embodiment of the present application;
fig. 6 is a schematic top view of an embodiment of the present application.
In the figure: 1. the device comprises a bottom plate, 2, a fixing plate, 3, a frame, 4, a winding roller, 5, a limiting block, 6, a fixing plate, 7, a handle, 8, roll paper, 9, an opening, 10, an electric push rod, 11, a sleeve, 12, a guide rod, 13, a limiting plate, 14, a writing board, 15, a knob, 16, a hook, 17, a supporting plate, 18, a partition plate, 19, a magnet, 20, a lighting lamp, 21 and a storage battery.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-6, a tool for learning historical events comprises a base plate 1, a teaching mechanism, a lifting mechanism and a receiving mechanism;
the teaching mechanism comprises a fixed plate 2, a frame 3 and a winding roller 4, wherein the fixed plate 2 is fixedly connected through the frame 3, the inner part of the fixed plate 2 is rotatably connected with the winding roller 4, a limiting block 5 is arranged at the end part of the winding roller 4, the winding roller 4 is fixedly connected with a fixed plate 6, and the bottom of the fixed plate 6 is rotatably connected with a handle 7;
the lifting mechanism comprises an electric push rod 10, a sleeve 11 and a guide rod 12, the bottom plate 1 and the frame 3 are fixedly connected through the electric push rod 10, the bottom plate 1 and the frame 3 are respectively fixedly connected with the sleeve 11 and the guide rod 12, the guide rod 12 is movably sleeved with the interior of the sleeve 11, and a storage battery 21 is fixedly installed at the bottom of the frame 3;
receiving mechanism includes limiting plate 13, clipboard 14 and backup pad 17, limiting plate 13 and frame 3 and 2 lateral walls fixed connection of fixed plate, be equipped with clipboard 14 between the limiting plate 13, backup pad 17 rotates with 2 tops of fixed plate to be connected, 17 lateral walls fixed connection of backup pad has baffle 18 and magnet 19.
The number of the fixed plates 2 is two, the two fixed plates 2 are respectively positioned on two sides of the frame 3, the winding roller 4 is arranged in each fixed plate 2, the surface of each winding roller 4 is wound with the roll paper 8, the fixed plates 2 are used for storing the winding rollers 4, when the device is used, the roll paper 8 is conveyed by the simultaneous rotation of the two winding rollers 2, the replacement of historical events on the roll paper 8 is realized, and the teaching is convenient; an opening 9 for moving a roll paper 8 is formed in the joint of the fixing plate 2 and the frame 3, the roll paper 8 is located inside the frame 3, illuminating lamps 20 are fixedly mounted on two sides of the frame 3, the opening 9 is used for conveying the roll paper 8, historical contents on the surface of the roll paper 8 are displayed inside the frame 3, and the illuminating lamps 20 are used for improving light illumination intensity and improving teaching display effect; an electric push rod 10 is arranged in the middle of the bottom plate 1, two symmetrically distributed sleeves 11 are respectively arranged on two sides of the electric push rod 10, the interiors of the sleeves 11 are slidably connected with guide rods 12, the electric push rod 10 is used for pushing the fixed plate 2 and the frame 3 to move so as to realize height adjustment of the teaching tool, and the guide rods 12 move in the sleeves 11 so as to improve the stability during lifting; the side wall of the fixed plate 2 is rotatably connected with a knob 15, one end of the knob 15 is in contact with a writing board 14, two hooks 16 of an L-shaped structure are arranged at the top of the fixed plate 2, the hooks 16 are clamped with the bottom end of a support plate 17, the hooks 16 are used for limiting and fixing the support plate 17, and the support plate 17 is limited and fixed by the hooks 16 when rotating to the top of the frame 3; the supporting plate 17 is of an L-shaped structure, the joint of the supporting plate 17 and the fixing plate 2 is positioned on one side of the supporting plate, and the bottom end of the supporting plate 17 is connected with the fixing plate 2 and the top surface of the frame 3 in a fitting manner; the side wall of the supporting plate 17 is provided with a plurality of partition plates 18 which are vertically distributed, magnets 19 are arranged in spaces formed among the partition plates 18, the magnets 19 are connected with cards for historical event learning in an adsorption mode, the supporting plate 17 is used for placing the cards for historical event learning, and the magnets 19 are used for adsorption so that teaching can be conveniently carried out; the bottom end of the winding roller 4 extends to the bottom end of the fixing plate 2, a U-shaped frame 3 is arranged between the fixing plates 2, an illuminating lamp 20 and a storage battery 21 in the frame 3 are respectively positioned at two sides of the roll paper 8, the storage battery 21 is respectively electrically connected with the illuminating lamp 20 and the electric push rod 10, the frame 3 is used for storing the roll paper 8, and the illuminating lamp 20 and the electric push rod 10 are powered through the storage battery 21, so that the use of a learning tool is facilitated; the number of the limiting plates 13 is two, the two limiting plates 13 are both of an L-shaped structure, the limiting plates 13 are provided with two writing boards 14, the writing boards 14 are connected with the limiting plates 13 in a sliding mode, the limiting plates 13 are used for limiting the writing boards 14, and the writing boards 14 can stably move and are convenient to store; the area of backup pad 17 and frame 3 and fixed plate 2 is the same, backup pad 17 is connected with the laminating of frame 3 and fixed plate 2 surface, distance between fixed plate 2 is the same with the length sum of two clipboards 14, rotates backup pad 17 when the frame 3 front end, protects the stock form 8 of frame 3 inside, improves dustproof effect and conveniently accomodates, and clipboard 14 can be accomodate to between the limiting plate 13, is provided with knob 15 and can carry on spacingly to limiting plate 13.
When the card is used, the storage battery 21 and the control switch are connected in the electric appliance elements in the application when the card is used, the support plate 17 is rotated to the top of the frame 3 when the card is used, the bottom of the support plate 17 is attached to the surface of the frame 3, the hook 16 is rotated to realize the clamping and fixing of the support plate 17, a card used for historical event teaching is placed in the partition plate 18 and is adsorbed by the magnet 19, the card teaching is convenient to carry out, the winding roller 4 is driven to rotate when the handle 7 is rotated to drive the fixed disc 6 to rotate by rotating the handle 7, the limiting block 5 is arranged to realize the limiting of the wound roll paper 8, the two winding rollers 4 are simultaneously rotated to display different historical events when the roll paper 8 moves in the opening 9, the display is carried out through the frame 3, the displaying of different historical events is convenient, the teaching effect is improved, the operation intensity of teachers is reduced, and when the writing is needed, make it follow and shift out between two limiting plates 13 through removing clipboard 14, write the teaching through clipboard 14, rotate knob 15 to horizontal position after removing the completion, it realizes spacingly to make its one end support clipboard 14, when the height of fixed plate 2 and frame 3 is adjusted to needs, flexible drive frame 3 through electric putter 10 goes up and down, make guide bar 12 slide in 11 insides of sleeve pipe and realize stable the lift, the convenience is adjusted fast according to the use needs, it can throw light on 8 departments of stock form to be provided with light 20, improve the teaching effect.
The application has the advantages that:
1. the fixing plate is arranged to realize storage of the winding roller, and record switching of historical events can be realized by rotating the winding roller during teaching, so that teaching of teachers is facilitated, and operation convenience is improved;
2. the lifting frame can realize lifting of the learning tool, can adapt to use of different teachers, and is provided with the sleeve and the guide rod to achieve good limiting and guarantee stable movement;
3. this application is provided with the backup pad and conveniently imparts knowledge to students placing of card of usefulness to it can conveniently write the teaching to be provided with the clipboard, improves the convenience in utilization, is favorable to jointly imparting knowledge to students, and backup pad and clipboard accomodate the convenience, improves learning tools's practicality.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A tool for learning historical events, comprising: comprises a bottom plate (1), a teaching mechanism, a lifting mechanism and a receiving mechanism;
the teaching mechanism comprises a fixed plate (2), a frame (3) and a winding roller (4), wherein the fixed plate (2) is fixedly connected through the frame (3), the inside of the fixed plate (2) is rotatably connected with the winding roller (4), a limiting block (5) is arranged at the end part of the winding roller (4), the winding roller (4) is fixedly connected with a fixed plate (6), and the bottom of the fixed plate (6) is rotatably connected with a handle (7);
the lifting mechanism comprises an electric push rod (10), a sleeve (11) and a guide rod (12), the bottom plate (1) and the frame (3) are fixedly connected through the electric push rod (10), the bottom plate (1) and the frame (3) are respectively fixedly connected with the sleeve (11) and the guide rod (12), the guide rod (12) is movably sleeved with the interior of the sleeve (11), and a storage battery (21) is fixedly arranged at the bottom of the frame (3);
receiving mechanism includes limiting plate (13), clipboard (14) and backup pad (17), limiting plate (13) and frame (3) and fixed plate (2) lateral wall fixed connection, be equipped with clipboard (14) between limiting plate (13), backup pad (17) are rotated with fixed plate (2) top and are connected, backup pad (17) lateral wall fixedly connected with baffle (18) and magnet (19).
2. A historical event learning tool as claimed in claim 1, wherein: the quantity of fixed plate (2) is two, two fixed plate (2) are located frame (3) both sides respectively, every fixed plate (2) inside all is equipped with wind-up roll (4), just wind-up roll (4) surface winding has stock form (8).
3. A historical event learning tool as claimed in claim 1, wherein: opening (9) that are used for stock form (8) to remove are offered to fixed plate (2) and frame (3) junction, stock form (8) are located inside frame (3), just frame (3) both sides all fixed mounting have light (20).
4. A historical event learning tool as claimed in claim 1, wherein: the bottom plate (1) middle part is equipped with electric putter (10), electric putter (10) both sides are equipped with two symmetric distribution's sleeve pipe (11) respectively, just sleeve pipe (11) inside all with guide bar (12) sliding connection.
5. A historical event learning tool as claimed in claim 1, wherein: fixed plate (2) lateral wall rotates with knob (15) to be connected, knob (15) one end contact has clipboard (14), fixed plate (2) top is equipped with couple (16) of two L shape structures, couple (16) and backup pad (17) bottom joint.
6. A historical event learning tool as claimed in claim 1, wherein: the supporting plate (17) is of an L-shaped structure, the joint of the supporting plate (17) and the fixing plate (2) is located on one side of the supporting plate, and the bottom end of the supporting plate (17) is attached to the top surfaces of the fixing plate (2) and the frame (3).
7. A historical event learning tool as claimed in claim 1, wherein: the side wall of the supporting plate (17) is provided with a plurality of partition plates (18) which are vertically distributed, magnets (19) are arranged in spaces formed among the partition plates (18), and the magnets (19) are connected with cards for historical event learning in an adsorption mode.
8. A historical event learning tool as claimed in claim 1, wherein: wind-up roll (4) bottom extends to fixed plate (2) bottom, be equipped with frame (3) of U-shaped structure between fixed plate (2), just light (20) and battery (21) inside frame (3) are located stock form (8) both sides respectively, battery (21) respectively with light (20) and electric putter (10) electric connection.
9. A historical event learning tool as claimed in claim 1, wherein: the number of limiting plate (13) is two, two limiting plate (13) all are L shape structure, limiting plate (13) are equipped with two clipboards (14), sliding connection between clipboard (14) and limiting plate (13).
10. A historical event learning tool as claimed in claim 1, wherein: the area of the supporting plate (17) is the same as that of the frame (3) and the area of the fixing plate (2), the supporting plate (17) is attached to the surface of the frame (3) and the surface of the fixing plate (2), and the distance between the fixing plates (2) is the same as the sum of the lengths of the two writing plates (14).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120104202.6U CN215182482U (en) | 2021-01-15 | 2021-01-15 | Tool for learning historical events |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120104202.6U CN215182482U (en) | 2021-01-15 | 2021-01-15 | Tool for learning historical events |
Publications (1)
Publication Number | Publication Date |
---|---|
CN215182482U true CN215182482U (en) | 2021-12-14 |
Family
ID=79403650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202120104202.6U Expired - Fee Related CN215182482U (en) | 2021-01-15 | 2021-01-15 | Tool for learning historical events |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN215182482U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114758562A (en) * | 2022-04-07 | 2022-07-15 | 常德职业技术学院 | Chinese language word filling interactive display device |
-
2021
- 2021-01-15 CN CN202120104202.6U patent/CN215182482U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114758562A (en) * | 2022-04-07 | 2022-07-15 | 常德职业技术学院 | Chinese language word filling interactive display device |
CN114758562B (en) * | 2022-04-07 | 2023-08-11 | 常德职业技术学院 | Interactive display device of word is filled to chinese language |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN215182482U (en) | Tool for learning historical events | |
CN206975843U (en) | A kind of financial specialty Multifunction teaching board | |
CN213123467U (en) | Display device with protection mechanism for economics teaching | |
CN216287437U (en) | Moral education propaganda platform | |
CN211748183U (en) | Portable mathematics teaching board | |
CN212847321U (en) | Novel mathematical modeling teaching aid | |
CN210249110U (en) | Blackboard with display device and helpful for students to learn | |
CN210039230U (en) | Novel public relation teaching show device | |
CN208318712U (en) | A kind of movable type physics test paper storage device | |
CN212939080U (en) | Display box for indoor design | |
CN209883417U (en) | Desk easy to clean | |
CN215156500U (en) | Portable teaching aid storage device | |
CN215014908U (en) | Archives frame is used to financial affairs convenient to seek | |
CN209859309U (en) | Online education equipment convenient to background is switched | |
CN214752414U (en) | Course teaching is with learning device | |
CN218122830U (en) | Pinyin explanation device that primary school's chinese classroom was used | |
CN212009954U (en) | Teaching device for computer software programming teaching | |
CN220491468U (en) | Specimen display device | |
CN211483409U (en) | Workstation for animation design | |
CN209879868U (en) | Teaching device for Chinese international education | |
CN209928881U (en) | Employment information guiding device | |
CN216133517U (en) | Junior middle school's chinese phrase learning tool | |
CN216957254U (en) | Solution detection experimental device | |
CN220916892U (en) | File rack | |
CN220465103U (en) | Display platform for training |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211214 |