CN209191552U - A kind of teaching appliance - Google Patents

A kind of teaching appliance Download PDF

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Publication number
CN209191552U
CN209191552U CN201820294271.6U CN201820294271U CN209191552U CN 209191552 U CN209191552 U CN 209191552U CN 201820294271 U CN201820294271 U CN 201820294271U CN 209191552 U CN209191552 U CN 209191552U
Authority
CN
China
Prior art keywords
display board
clipboard
ontology
teaching
magnetic
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
Application number
CN201820294271.6U
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Chinese (zh)
Inventor
唐韵捷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Ocean University ZJOU
Original Assignee
Zhejiang Ocean University ZJOU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Ocean University ZJOU filed Critical Zhejiang Ocean University ZJOU
Priority to CN201820294271.6U priority Critical patent/CN209191552U/en
Application granted granted Critical
Publication of CN209191552U publication Critical patent/CN209191552U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a kind of teaching appliances, including, clipboard ontology and the bearing frame body set on clipboard body bottom portion;Wherein clipboard ontology includes the first display board and the second display board that fitting connects;The end face in the first display board towards outside is the blackboard surface suitable for chalk-writing, and the end face in the second display board towards outside is the whiteboard surface write suitable for oil pen;The top of clipboard ontology is horizontally arranged with spool, and multimedia teaching projection cloth is provided on the spool;And second display board be built-in with a cavity, have a magnetic sheet in the cavity;The magnetic end of magnetic sheet is facing towards whiteboard surface;The end face outside of whiteboard surface is equipped with several suitable for the magnetic attracting magnetic button patch of magnetic sheet.

Description

A kind of teaching appliance
Technical field
The utility model belongs to teaching equipment technical field, and in particular to a kind of teaching appliance.
Background technique
The teaching in classroom be unable to do without teaching appliance, though the board of education in traditional teaching appliance is the blackboard for being fixed on metope So it is capable of providing the space of writing, but traditional blackboard be due to that can not move, and the fixed metope that is bonded in can not adjust height, It is many inconvenient to exist in use process.And for the classroom of an entirety, when teacher writes the relevant content of course At the both sides of blackboard, often make in classroom partial students look at the blackboard it is very tired do not see even, therefore being arranged can be with The teaching appliance flexibly used can solve above-mentioned existing blackboard there are the problem of.
Utility model content
The purpose of the utility model is to provide a kind of teaching appliances, are made in teaching process with solving to improve teaching appliance The technical issues of with effect.
In order to solve the above-mentioned technical problem, the utility model provides a kind of teaching appliance, comprising: clipboard ontology and sets In the bearing frame body of the clipboard body bottom portion;Wherein
The clipboard ontology includes the first display board and the second display board that fitting connects;
The end face in first display board towards outside is the blackboard surface suitable for chalk-writing, the second display board direction The end face in outside is the whiteboard surface write suitable for oil pen;
The top of the clipboard ontology is horizontally arranged with spool, and multimedia teaching projection cloth is provided on the spool;With And
Second display board is built-in with a cavity, there is a magnetic sheet in the cavity;The magnetic end of the magnetic sheet is facing towards institute State whiteboard surface;
The end face outside of the whiteboard surface is equipped with several suitable for the magnetic attracting magnetic button patch of the magnetic sheet.
In the utility model preferred embodiment, the top of the clipboard ontology and be located at the spool above set There is the lamps and lanterns fixed plate perpendicular to the clipboard, the lamps and lanterns fixed plate is towards being equipped with LED light on the bottom end of clipboard ontology Group.
In the utility model preferred embodiment, the bottom face of the clipboard ontology is equipped with one group of symmetrical storing Lattice;
The opening of matter storage lattice described in one group is respectively facing the first display board and the second display board;And
The opening of the matter storage lattice is each equipped with the baffle that can be opened relative to opening.
In the utility model preferred embodiment, one end of the spool is equipped with drawstring.
In the utility model preferred embodiment, the bearing frame body includes being suitable for clamping to support clipboard ontology The support frame of short transverse two side ends, the height adjustment assembly being connected with support frame, and be connected with the height adjustment assembly Support plinth;
The bottom of the support plinth is equipped with the universal wheel with self-locking structure.
In the utility model preferred embodiment, support frame as described above uses the type of falling Π structure, that is, includes a cross-brace Bar and vertical supporting bar positioned at the transverse support bar two side ends;
The vertical supporting bar is suitable for being bonded with the short transverse two side ends of clipboard ontology;And
The height adjustment assembly include the slide post being connected with the middle part of the transverse support bar and with the slide post The fixed column of flexible connection;The top of the fixed column is flexibly connected by a clamping screw with slide post;
The fixed column is fixedly connected with support plinth.
In the utility model preferred embodiment, the outboard end of the vertical supporting bar is equipped at least two and is adapted for insertion into The fixing bolt of the side of the short transverse of clipboard ontology.
In the utility model preferred embodiment, the outboard end of the vertical supporting bar is additionally provided with a handle ring.
In the utility model preferred embodiment, a U is equipped between the transverse support bar and the clipboard ontology Type frame.
In the utility model preferred embodiment, the transverse support bar passes through the upper end of a rolling bearing and slide post It is connected.
The utility model has the beneficial effects that the teaching appliance of the utility model, on the one hand, the fitting of design connect One display board and the second display board can be suitable for simultaneously chalk-writing and oil pen write, and meet two kinds of different ways of writing Use demand.On the other hand, by the magnetic sheet being arranged in the second display board inner cavity, cooperate the magnetic button patch on whiteboard surface, when When needing to show the content in paper document material (such as paper map), it can be pasted by magnetic button and be covered in paper document On whiteboard surface, realizes the dual-purpose effect of whiteboard surface, substantially increase the service efficiency of the teaching appliance of the utility model.
Further, it is convenient in the environment of insufficient light by the LED light group of setting, by LED light group to first The content of display board or the second display board is illuminated, and is seen clearly convenient for student.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the teaching appliance of the utility model;
Fig. 2 is the lamps and lanterns fixed plate of the teaching appliance of the utility model and the structural schematic diagram of LED light group;
Fig. 3 is the structural schematic diagram of the matter storage lattice of the teaching appliance of the utility model;
Fig. 4 is the structural schematic diagram of the multi-format host rack of the teaching appliance of the utility model;
Fig. 5 is another viewing angle constructions schematic diagram of the teaching appliance of the utility model;
Fig. 6 is the structural schematic diagram of the second display board of the teaching appliance of the utility model.
In figure: clipboard ontology 100, the first display board 101, the second display board 102, handle ring 105, blackboard surface 106, white Plate face 108, magnetic sheet 109, magnetic button patch 110, spool 201, multimedia teaching projection cloth 202, fixed ring 203, stop part 205, Lamps and lanterns fixed plate 301, LED light group 302, matter storage lattice 401, baffle 403, handle 405, wind spring 407, support plinth 501, laterally branch Strut 503, vertical supporting bar 504, slide post 505, fixed column 506, clamping screw 508, fixing bolt 510, universal wheel 511, U Type frame 512, horizontal rocker 513, multi-format host rack 515, container 517, rolling bearing 518, reinforcing rib 519.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment is fallen within the protection scope of the utility model.
Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted The scope of the utility model of protection is sought, but is merely representative of the selected embodiment of the utility model.Based on the utility model In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts Mode is fallen within the protection scope of the utility model.
Embodiment 1:
As depicted in figs. 1 and 2, a kind of teaching appliance of the utility model, comprising: clipboard ontology 100 and be set to write The bearing frame body of 100 bottom of plate ontology.
Specifically, the clipboard ontology 100 of the present embodiment includes the first display board 101 and the second display board that fitting connects 102;The end face in the first display board 101 towards outside is blackboard surface 106 suitable for chalk-writing, and the second display board 102 is towards outer The end face of side is the whiteboard surface 108 write suitable for oil pen.It wherein, can one for the first display board 101 and the second display board 102 Body structure, or assist rivet etc. to realize securely connecting for the two again by the bonding of strength viscose, the present embodiment does not do absolute limit It is fixed.
The top of clipboard ontology 100 is horizontally arranged with spool 201, and multimedia teaching projection is provided on the spool 201 Cloth 202, for the ease of multimedia teaching projection cloth 202 is unfolded, one end of spool 201 is equipped with drawstring (being not marked in figure).Setting Multimedia teaching projection cloth 202 can cooperate projector, carry out digitized teaching.Wherein, optional to set for the spool 201 It sets on the end face of the first display board 101 or the second display board 102, although being already provided with whiteboard surface 108 in the present embodiment, It can also be used for accessory projector to use, but the limited area of whiteboard surface 108, therefore setting is wrapped on spool 201 and can draw The multimedia teaching projection cloth 202 opened, it can be ensured that projected area satisfies the use demand.Specifically, in the first display board 101 or The top of the second display board of person 102 is equipped with one group of fixed ring 203, and spool 201 passes through one group of fixed ring 203, and is being pierced by fixation The outer end of ring 203 is detachably equipped with stop part 205, and the detachable stop part 205 of setting can be used for dismantling multimedia teaching throwing Shadow cloth 202.
It please refers to shown in Fig. 6, the second display board 102 of the teaching appliance of the present embodiment is built-in with a cavity, in the cavity There is a magnetic sheet 109;The magnetic end of magnetic sheet 109 is facing towards whiteboard surface 108;And the end face outside of whiteboard surface 108 is equipped with several Suitable for the magnetic attracting magnetic button patch 110 of magnetic sheet 109.Optionally, in order to ensure the suction between magnetic button patch 110 and magnetic sheet 109 Effect is closed, the distance between magnetic sheet 109 and whiteboard surface 108 are set as 1-1.5cm.
By the magnetic sheet 109 being arranged in 102 inner cavity of the second display board, cooperate the magnetic button patch 110 on whiteboard surface 108, when When needing to show the content on paper document material, 110 can be pasted by magnetic button and paper document is covered in whiteboard surface 108 On, realize the dual-purpose effect of whiteboard surface 108.
When whiteboard surface 108 is used for oil pen's written contents, magnetic button patch 110, which can be removed, to be accommodated in matter storage lattice 401, Several magnetic button patches 110 can be uniformly affixed on a corner of whiteboard surface 108.Paper is carried out when needing to paste 110 using magnetic button When the displaying of material, then magnetic button is pasted 110 and is fitted on paper material on corresponding position.
Please refer to shown in Fig. 1 and Fig. 2, the top of clipboard ontology 100 and be located at spool 201 top be equipped with perpendicular to book The lamps and lanterns fixed plate 301 of plate is write, the lamps and lanterns fixed plate 301 is towards being equipped with LED light group 302 on the bottom end of clipboard ontology 100. For the ease of illuminating to the first display board 101 and the second display board 102, lamps and lanterns fixed plate 301 includes respectively corresponding first The lamps and lanterns fixed plate 301 of display board 101 and the second display board 102.That is, LED light group 302 includes respectively corresponding the first display board 101 and second display board 102 be arranged two groups of LED light groups 302.Optionally, for the ease of mobile clipboard ontology 100, this reality The LED light group 302 for applying example is powered using the battery that can be filled.In order to improve LED light group 302 for the first display board 101 With the illuminating effect of the second display board 102, the light source direction of illumination of LED light group 302 is tiltedly towards the first display board 101 and the second exhibition Show plate 102.
It please refers to shown in Fig. 1 and Fig. 3, for the ease of the teaching phase such as storage chalk holder, teaching pen, oil pen or chalkboard eraser The bottom face of the teaching aid of pass, clipboard ontology 100 is equipped with one group of symmetrical matter storage lattice 401;The opening difference of one group of matter storage lattice 401 Towards the first display board 101 and the second display board 102;And the opening of matter storage lattice 401 is each equipped with and can beat relative to opening The baffle 403 opened.Optionally, baffle 403 can for example, by but be not limited to wind spring 407 and be connected with matter storage lattice 401, in order to beat It opens.
Wind spring 407 in the present embodiment is set to the bottom edge of the opening of matter storage lattice 401, i.e. the upper edge of baffle 403 can It is opened relative to opening, for ease of operation, handle 405 is set in the lateral surface of baffle 403.Setting is beneficial to prevent in this way During baffle 403 is opened, the article in matter storage lattice 401 is slid.
Again specifically, the bearing frame body of the present embodiment includes the short transverse suitable for clamping to support clipboard ontology 100 The support frame of two side ends, the height adjustment assembly being connected with support frame, and the support plinth being connected with height adjustment assembly 501;The bottom of support plinth 501 is equipped with the universal wheel 511 with self-locking structure.
The design of universal wheel 511 is conducive to mobile clipboard ontology 100, can convenient for being sitting in the student of classroom different direction See the content on clipboard ontology 100 clearly.
Support frame uses the type of falling Π structure, i.e., including a transverse support bar 503 and positioned at 503 two side ends of transverse support bar Vertical supporting bar 504;Vertical supporting bar 504 is suitable for being bonded with the short transverse two side ends of clipboard ontology 100;And height Adjusting component includes the slide post 505 being connected with the middle part of transverse support bar 503 and the fixed column being flexibly connected with slide post 505 506;The top of fixed column 506 is flexibly connected by a clamping screw 508 with slide post 505;Fixed column 506 and support plinth 501 are fixedly connected.Wherein, slide post 505 is partly set in the inner cavity of fixed column 506, when needing regulating writing plate ontology When 100 use height, the tight bolt 508 of releasable lock adjusts slide post 505 and protrudes into the depth in fixed column 506, to realize The adjusting of the height of clipboard ontology 100.
Teaching appliance in order to improve the present embodiment stability in use, the transverse width of support plinth 501 are greater than The transverse width of clipboard ontology 100, and clump weight is set inside support plinth 501, to improve the support force peace of bottom Weighing apparatus property.
The outboard end of vertical supporting bar 504 is equipped with the side for the short transverse that at least two are adapted for insertion into clipboard ontology 100 The fixing bolt 510 at end.Specifically, being equipped in the side end face of the short transverse of vertical supporting bar 504 and clipboard ontology 100 suitable In the threaded hole that fixing bolt 510 is inserted into, by the way that fixing bolt 510 is sequentially inserted into vertical supporting bar 504 and clipboard ontology The side of 100 short transverse can realize the fixation of vertical supporting bar 504 and clipboard ontology 100.In order to realize longitudinal bracing Stability after connecting between bar 504 and clipboard ontology 100, at least two fixing bolts 510 can be located separately longitudinal bracing Also a fixing bolt 510 can be arranged again at middle part in the upper and lower end of bar 504.
For the ease of the movement to clipboard ontology 100, and convenient for the first display board 101 and the second display board 102 The adjustment of position, the outboard end of vertical supporting bar 504 are additionally provided with a handle ring 105.By hold handle ring 105 can carry out for The movement of clipboard ontology 100 also only needs to draw when needing to adjust the position of the first display board 101 and the second display board 102 Firmly handle ring 105 can be operated.
In order to improve stability of the clipboard ontology 100 in writing process, transverse support bar 503 and clipboard ontology A U-shaped frame 512 is equipped between 100.U-shaped frame 512 can realize the bottom support for clipboard ontology 100, in conjunction with longitudinal bracing Bar 504 realizes that the collaboration of bottom and two sides for clipboard ontology 100 supports, avoids clipboard ontology 100 in writing process In shaking.
In order to be convenient for placing the ordinary articles such as chalkboard eraser during the writing to clipboard ontology 100, in U-shaped frame One horizontal rocker 513 is set on 512, for temporarily placing chalkboard eraser and other items.
Embodiment 2:
Refering to Figure 1, on the basis of the teaching appliance of embodiment 1, the transverse direction of the teaching appliance in the present embodiment Support rod 503 is connected by a rolling bearing 518 with the upper end of slide post 505.
When needing to carry out the adjustment of position of the first display board 101 and the second display board 102, can avoid support plinth 501 are rotated, and clipboard ontology 100 can be directly rotated.Moreover, by the rolling bearing 518 of setting, it can be to clipboard sheet Body 100 be shown during overturning so that the student for being sitting in the two sides in classroom sees the content on clipboard ontology 100 Be more clear.Realizing for overturning can be reduced to avoid the movement constantly for support plinth 501 for 501 bottom of support plinth The repetitive operation of locking and the release of the universal wheel 511 in portion in a certain range, can be seen clearly by overturning convenient for student.
In order to improve the fastness being connected between rolling bearing 518 and transverse support bar 503, the two of rolling bearing 518 Side is respectively equipped with a reinforcing rib 519.The setting of reinforcing rib 519 can avoid connecting between transverse support bar 503 and rolling bearing 518 Loosening.
Embodiment 3:
It please refers to shown in Fig. 1 and Fig. 4, on the basis of the teaching appliance of embodiment 1 or embodiment 2, in the present embodiment Inlay card has a pair of of multi-format host rack 515, and a pair of of multi-format host rack 515 on the lateral wall of the fixed column 506 of teaching appliance Positioned at the underface of clipboard ontology 100.
Specifically, the multi-format host rack 515 of the present embodiment includes the receiving that several lattice are suitable for heart magazine or newpapers and periodicals Slot 517.Optionally, for the ease of dismantling the multi-format host rack 515, card slot is offered on the lateral wall of fixed column 506, it is right It answers, the bottom setting of multi-format host rack 515 is suitable for inlay card and enters the fixture block in card slot.Pass through the multi-format host rack of setting 515, the board of education of the present embodiment can be realized convenient for accommodating to conventional periodical, the magazine etc. that student in classroom subscribes to Receiving function simplify the setting of equipment in classroom to reduce the setting of other journal reader.
In conjunction with the teaching appliance of the present embodiment whiteboard surface 108 on magnetic button patch 110, do not needing using whiteboard surface When the writing of 108 progress oil pens, newspaper can be fitted on whiteboard surface 108, read daily break and use for student, sufficiently The effect of journal reader of the whiteboard surface 108 under without using state is played.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims Property range.
In the description of the present invention, it should be understood that indicating position or the term of positional relationship are based on attached drawing Shown in orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion institute The equipment or element of finger must have a particular orientation, is constructed and operated in a specific orientation, therefore should not be understood as to this reality With novel limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;It can be Mechanical connection, is also possible to be electrically connected;It can be directly connected, two can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or The utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and letter Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " etc. are only used for area Divide description, is not understood to indicate or imply relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical" It has to fully horizontally, but can be slightly tilted.
In the present invention unless specifically defined or limited otherwise, fisrt feature is on or below second feature It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature the Right above two features and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature is in the second spy Under sign, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of fisrt feature level Height is less than second feature.

Claims (10)

1. a kind of teaching appliance characterized by comprising clipboard ontology and the bearing support set on the clipboard body bottom portion Body;Wherein
The clipboard ontology includes the first display board and the second display board that fitting connects;
The end face in first display board towards outside is blackboard surface suitable for chalk-writing, and second display board is towards outside End face be the whiteboard surface write suitable for oil pen;
The top of the clipboard ontology is horizontally arranged with spool, and multimedia teaching projection cloth is provided on the spool;And
Second display board is built-in with a cavity, there is a magnetic sheet in the cavity;The magnetic end of the magnetic sheet is facing towards described white Plate face;
The end face outside of the whiteboard surface is equipped with several suitable for the magnetic attracting magnetic button patch of the magnetic sheet.
2. teaching appliance according to claim 1, which is characterized in that the top of the clipboard ontology and be located at the volume The top of axis is equipped with the lamps and lanterns fixed plate perpendicular to the clipboard, and the lamps and lanterns fixed plate is towards filling on the bottom end of clipboard ontology Equipped with LED light group.
3. teaching appliance according to claim 1, which is characterized in that the bottom face of the clipboard ontology is equipped with one group pair The matter storage lattice of title;
The opening of matter storage lattice described in one group is respectively facing the first display board and the second display board;And
The opening of the matter storage lattice is each equipped with the baffle that can be opened relative to opening.
4. teaching appliance according to claim 1, which is characterized in that one end of the spool is equipped with drawstring.
5. teaching appliance according to claim 1, which is characterized in that the bearing frame body includes being suitable for clamping to support book The support frame for writing the short transverse two side ends of plate ontology, the height adjustment assembly being connected with support frame, and with the height tune Save the connected support plinth of component;
The bottom of the support plinth is equipped with the universal wheel with self-locking structure.
6. teaching appliance according to claim 5, which is characterized in that support frame as described above uses the type of falling Π structure, that is, includes One transverse support bar and vertical supporting bar positioned at the transverse support bar two side ends;
The vertical supporting bar is suitable for being bonded with the short transverse two side ends of clipboard ontology;And
The height adjustment assembly include the slide post being connected with the middle part of the transverse support bar and with slide post activity The fixed column of connection;The top of the fixed column is flexibly connected by a clamping screw with slide post;
The fixed column is fixedly connected with support plinth.
7. teaching appliance according to claim 6, which is characterized in that the outboard end of the vertical supporting bar is equipped at least two The fixing bolt of the side of a short transverse for being adapted for insertion into clipboard ontology.
8. the described in any item teaching appliances of according to claim 6 or 7, which is characterized in that the outboard end of the vertical supporting bar It is additionally provided with a handle ring.
9. the described in any item teaching appliances of according to claim 6 or 7, which is characterized in that the transverse support bar and the book It writes and is equipped with a U-shaped frame between plate ontology.
10. the described in any item teaching appliances of according to claim 6 or 7, which is characterized in that the transverse support bar passes through one turn Dynamic bearing is connected with the upper end of slide post.
CN201820294271.6U 2018-03-02 2018-03-02 A kind of teaching appliance Expired - Fee Related CN209191552U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820294271.6U CN209191552U (en) 2018-03-02 2018-03-02 A kind of teaching appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820294271.6U CN209191552U (en) 2018-03-02 2018-03-02 A kind of teaching appliance

Publications (1)

Publication Number Publication Date
CN209191552U true CN209191552U (en) 2019-08-02

Family

ID=67403984

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820294271.6U Expired - Fee Related CN209191552U (en) 2018-03-02 2018-03-02 A kind of teaching appliance

Country Status (1)

Country Link
CN (1) CN209191552U (en)

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Granted publication date: 20190802

Termination date: 20200302