CN201633382U

CN201633382U - Multi-functional blackboard

Info

Publication number: CN201633382U
Application number: CN2010201119373U
Authority: CN
Inventors: 李冬梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-02-10
Filing date: 2010-02-10
Publication date: 2010-11-17
Anticipated expiration: 2020-02-10

Abstract

The utility model relates to a multi-functional blackboard comprising a wall type fixed blackboard, at least one auxiliary blackboard and rabbets, wherein the upper edge and the lower edge of the fixed blackboard are correspondingly fixedly provided with an upper rail bar and a lower rail bar which are horizontally arranged, at least one corresponding ends of the upper rail bar and the lower rail bar respectively extend out of the fixed blackboard, and horizontal rail slots are correspondingly arranged on opposite surfaces between both ends of the upper rail bar and the lower rail bar; the auxiliary blackboard is matched between an upper rail slot and a lower rail slot, can horizontally move and has one fifth to one third length of the fixed blackboard, four corners of the auxiliary blackboard are correspondingly provided with four rolling mechanisms capable of matching in the corresponding rail slots in a rolling way; the outward extending lengths of the upper rail bar and the lower rail bar are equivalent to the length of auxiliary blackboard, and the upper rail bar and the lower rail bar are correspondingly provided with the rabbets capable of ensuring the same-side rolling mechanisms to enter and exit the rail slots to horizontally overturn the auxiliary blackboard. The auxiliary blackboard can horizontally move and be horizontally overturned through the rabbets, can move without occupying the fixed blackboard and can be overturned to conceal blackboard writings, thereby preventing the blackboard writings of other course teachers from being influenced and the attention of students from being distracted. The utility model retains the blackboard writings for a long time by utilizing the auxiliary blackboard under the precondition without influencing the fixed blackboard.

Description

A kind of multi-functional blackboard

Technical field

The utility model relates to teaching aid, is meant a kind of multi-functional blackboard especially.

Background technology

Existing blackboard area is fixed, and is installed in anterior metope middle part, classroom, because the teacher of different courses needs writing on the blackboard, when as above the writing on the blackboard of class needs the long period to keep somewhere, has taken blackboard on the one hand, influences next class teacher's writing on the blackboard; Owing to the existence of different course writings on the blackboard, influence student's notice on the other hand.

Summary of the invention

The purpose of this utility model is the above-mentioned deficiency that overcomes existing blackboard, provides a kind of and is convenient to writing on the blackboard and keeps somewhere, avoid the writing on the blackboard of teacher's Palingraphia for a long time and do not influence the writing on the blackboard of different courses and the multi-functional blackboard of student's notice.

The utility model adopts following technical scheme:

A kind of multi-functional blackboard, comprise fixedly blackboard of wall type, it is characterized in that: correspondence is fixed with horizontally disposed upper and lower rail bar on the upper and lower limit of described fixedly blackboard, upper and lower rail bar has at least a respective end to stretch out respectively fixedly outside the blackboard, and correspondence is provided with horizontal rail groove on the opposite face between the two ends of upper and lower rail bar; Comprise that also at least one is engaged between the upper and lower rail groove the auxiliary blackboard that can move horizontally along the rail groove, the length of this auxiliary blackboard is equiped with four rolling mechanisms that rollably are engaged in the corresponding rail groove for correspondence on 1/5-1/3 and its position, four angles of fixing blackboard length; The extension of described rail bar is suitable with auxiliary blackboard length, and corresponding offering can be for the notch of homonymy rolling mechanism turnover rail groove with the auxiliary blackboard of flip horizontal on the described upper and lower rail bar.

Further, above-mentioned upper and lower rail bar one end stretches out fixedly blackboard, fixedly is equiped with dismountable left and right limited block respectively in the upper and lower rail groove of corresponding position, limit, blackboard two ends; Auxiliary blackboard of assembling between the upper and lower rail bar, this auxiliary blackboard is assemblied between the left and right limited block movably; Described notch comprises that respectively symmetry is opened in first, second notch on the upper and lower rail bar of near-end limited block both sides, rail bar extension, and the length with auxiliary blackboard is suitable respectively for the spacing between first, second notch and the corresponding limited block.

Fixedly blackboard is stretched out at the two ends of above-mentioned upper and lower rail bar respectively, is equipped with two auxiliary blackboards between the upper and lower rail bar; Fixedly correspondence is provided with dismountable left and right limited block in the upper and lower rail groove of corresponding position, limit, blackboard two ends; Described notch is divided into first, second notch of left and right limited block both sides, and the length with auxiliary blackboard is suitable respectively for the spacing between first, second corresponding notch and the corresponding limited block.

Above-mentioned rolling mechanism comprises vertically being vertically fixed on assists the installation minor axis on the position, four angles of blackboard and is fixedly set in the cone bearing of installing on the minor axis, and the cone bearing activity is engaged in the rail groove.

The spaced apart ash-falling hole that is provided with a plurality of vertical perforations on the rail groove bottom of above-mentioned rail bar down, each ash-falling hole lower port corresponding position is equiped with the drawing and pulling type ash box respectively.

But above-mentioned auxiliary blackboard is two-sided writing blackboard.

Occupation mode of the present utility model: at first will assist the blackboard activity to be installed between the upper and lower rail bar and be stacked in portion in face of the plate of fixing blackboard by cone bearing, auxiliary blackboard can fixedly move horizontally along the rail groove between the blackboard two ends by cone bearing, the teacher can write writing on the blackboard on auxiliary blackboard, and the mobility of the auxiliary blackboard of utilization, to assist blackboard to move to the optimum position, guarantee that the student on both sides can both see writing on the blackboard clearly.When not needing practicality to assist blackboard, can will assist on overhanging section that moves to rail bar behind 180 ° of the blackboard flip horizontals by notch, avoid auxiliary blackboard to take the fixedly writing on the blackboard usable floor area of blackboard, also can on auxiliary blackboard, write writing on the blackboard, under the situation that does not influence the fixedly normal use of blackboard, increase effective writing on the blackboard area.The teacher also can write operation, class-exercise answer etc. on auxiliary blackboard before the class, move to the fixedly blackboard outside after will assisting the blackboard upset by notch again, to hide operation, class-exercise answer etc., thereby can be as required in the classroom or after class, show the writing on the blackboard content of writing in advance after will assisting the blackboard upset by notch again, flexible and convenient to use, avoid influencing other courses teacher's writing on the blackboard and the notice of listening to the teacher of disperseing the student, also can save the writing on the blackboard time of teacher on the classroom, make full use of the limited classroom instruction time, improve efficiency of teaching.

Description of drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is the amplification view along A-A direction among Fig. 1.

Fig. 3 is the amplification view along B-B direction among Fig. 1.

Fig. 4 is the structural representation behind the auxiliary blackboard of dismounting among Fig. 3.

Fig. 5 is the structural representation of auxiliary blackboard.

Fig. 6 is the view behind 180 ° of the auxiliary blackboard flip horizontals among Fig. 1.

The specific embodiment

The specific embodiment of the present utility model is described with reference to the accompanying drawings.

With reference to figure 1 and in conjunction with Fig. 2 and Fig. 3.A kind of multi-functional blackboard, it comprises that mainly fixedly blackboard 1, correspondence are installed in the upper and lower

horizontal rail bar

2,3 on fixing blackboard 1 upper and lower limit and are engaged between the two

horizontal rail bars

2,3 the left and right

auxiliary blackboard

41,42 that can move horizontally along rail bar known wall type.

Horizontal rail bar

2,3 is by on the securing member fixed installation metope; Measure-alike and length horizontal sides of left and right

auxiliary blackboard

41,42 is roughly 1/5-3/1 of fixing blackboard 1 length, installs respectively in the fixing plate face both sides of blackboard 1.

Referring to figs. 1 through Fig. 4.Fixedly blackboard 1 is extended at the two ends of above-mentioned upper and lower

horizontal rail bar

2,3 respectively, and the overhanging segment length of every side of rail bar is slightly larger than the length of auxiliary blackboard horizontal sides.Corresponding being provided with runs through that the rail bar length direction is arranged and cross section is the

rail groove

21,31 of flat V-type substantially at the opposite face of upper and lower

horizontal rail bar

2,3 middle part, fixedly is equiped with the limited block that only illustrates among dismountable left and right limited block 311(figure in the rail groove 31 in the

rail groove

21,31 of blackboard 1 left and right end corresponding position respectively).

With reference to Fig. 1, Fig. 3, Fig. 5 and Fig. 6.And in conjunction with Fig. 1 to Fig. 3.The Reelable blackboard of above-mentioned

auxiliary blackboard

41,42 for can two-sidedly writing is equiped with the rolling mechanism that matches with

rail groove

21,31 respectively on the position, four angles of auxiliary blackboard 41,42.Each rolling mechanism comprises respectively vertically being vertically fixed on assists the installation minor axis 51 on blackboard 41, the 42 corresponding angles positions and is fixedly set in the corresponding cone bearing of installing on the minor axis 51 52 respectively, and cone bearing 52 is engaged in the corresponding rail groove.

Auxiliary blackboard

41,42 moves horizontally along

rail groove

21,31 by cone bearing 72.

With reference to Fig. 1, Fig. 3, Fig. 4 and Fig. 6.Further, for realizing auxiliary blackboard 41, but 42 flip horizontals, a left side, the rail groove 21 of right limit piece both sides, the corresponding notch 61 that can supply single cone bearing 52 to free in and out that offers on 31 lateral walls, 62,

notch

71,72,

notch

61,71 lay respectively at corresponding limited block inboard on, following horizontal rail bar 2, on 3,

notch

62,72 are positioned on overhanging section of the rail bar in the limited block outside,

notch

61,62,

notch

71,72 roughly are arranged symmetrically in the both sides of corresponding limited block, between notch 61 and the notch 62, distance between notch 71 and the notch 72 equals the twice of auxiliary blackboard with horizontal range between two cone bearings on limit.When auxiliary blackboard moves to the limited block of fixing blackboard 1 respective side, can be by the auxiliary blackboard of

notch

61,71 flip horizontals, auxiliary blackboard upset back is engaged in cone bearing 52 in the rail groove once more by the

notch

62,72 on overhanging section of the rail bar, and manually inwardly touch and assist blackboard to make cone bearing 52 fine motions and depart from

notch

62,72, prevent that auxiliary blackboard from taking place freely to rotate.In like manner, also can be stacked in the fixedly front portion of blackboard with after assisting blackboard to overturn once more.

With reference to Fig. 2 and in conjunction with Fig. 1 and Fig. 3.For the ease of chalk dust in the cleaning rail groove, the spaced apart ash-falling hole 30 that is provided with a plurality of perforations on the bottom surface of rail groove 31, device has drawing and pulling type ash box 8 respectively on the rail bar bottom surface of each ash-falling hole 30 correspondence.Moved auxiliary blackboard at 41,42 o'clock, chalk dust can enter in the ash box 8 by ash-falling hole 30 under the drive of cone bearing thereupon, after use a period of time, can extract ash box 8 out and carry out periodic cleaning, and the auxiliary blackboard of influence moves in order to avoid chalk dust is piled up.The size and the distribution of ash-falling hole 30, ash box 8 can specifically be arranged according to actual needs, are not limited to shown in the figure.

Above-mentioned only is the specific embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1. multi-functional blackboard, comprise fixedly blackboard of wall type, it is characterized in that: correspondence is fixed with horizontally disposed upper and lower rail bar on the upper and lower limit of described fixedly blackboard, upper and lower rail bar has at least a respective end to stretch out respectively fixedly outside the blackboard, and correspondence is provided with horizontal rail groove on the opposite face between the two ends of upper and lower rail bar; Comprise that also at least one is engaged between the upper and lower rail groove the auxiliary blackboard that can move horizontally along the rail groove, the length of this auxiliary blackboard is equiped with four rolling mechanisms that rollably are engaged in the corresponding rail groove for correspondence on 1/5-1/3 and its position, four angles of fixing blackboard length; The extension of described rail bar is suitable with auxiliary blackboard length, and corresponding offering can be for the notch of homonymy rolling mechanism turnover rail groove with the auxiliary blackboard of flip horizontal on the described upper and lower rail bar.

2. multi-functional blackboard according to claim 1 is characterized in that: but described auxiliary blackboard is two-sided writing blackboard; Described upper and lower rail bar one end stretches out fixedly blackboard, fixedly is equiped with dismountable left and right limited block respectively in the upper and lower rail groove of corresponding position, limit, blackboard two ends; Auxiliary blackboard of assembling between the upper and lower rail bar, this auxiliary blackboard is assemblied between the left and right limited block movably; Described notch comprises that respectively symmetry is opened in first, second notch on the upper and lower rail bar of near-end limited block both sides, rail bar extension, and the length with auxiliary blackboard is suitable respectively for the spacing between first, second notch and the corresponding limited block.

3. multi-functional blackboard according to claim 1 is characterized in that: but described auxiliary blackboard is two-sided writing blackboard; Fixedly blackboard is stretched out at the two ends of described upper and lower rail bar respectively, is equipped with two auxiliary blackboards between the upper and lower rail bar; Fixedly correspondence is provided with dismountable left and right limited block in the upper and lower rail groove of corresponding position, limit, blackboard two ends; Described notch is divided into first, second notch of left and right limited block both sides, and the length with auxiliary blackboard is suitable respectively for the spacing between first, second corresponding notch and the corresponding limited block.

4. according to the arbitrary described multi-functional blackboard of claim 1 to 3, it is characterized in that: described rolling mechanism comprises vertically being vertically fixed on assists the installation minor axis on the position, four angles of blackboard and is fixedly set in the cone bearing of installing on the minor axis, and the cone bearing activity is engaged in the rail groove.

5. multi-functional blackboard according to claim 4 is characterized in that: the spaced apart ash-falling hole that is provided with a plurality of vertical perforations on the rail groove bottom of following rail bar, each ash-falling hole lower port corresponding position is equiped with the drawing and pulling type ash box respectively.

6. according to the arbitrary described multi-functional blackboard of claim 1 to 3, it is characterized in that: the spaced apart ash-falling hole that is provided with a plurality of vertical perforations on the rail groove bottom of following rail bar, each ash-falling hole lower port corresponding position is equiped with the drawing and pulling type ash box respectively.

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