CN205929920U - Novel blackboard - Google Patents

Abstract

The utility model discloses a blackboard, including blackboard body and blackboard eraser, wherein blackboard body's upper and lower frame is equipped with an upper groove and a low groove respectively, and the upper and lower end of blackboard eraser is equipped with a top sheave and a lower sheave respectively, and upper and lower pulley is inlayed respectively in upper groove and low groove, upper and lower recess upper surface is provided with top board and holding down plate respectively, and every clamp plate covers the recess that corresponds and pushes down corresponding pulley. The utility model provides a novel blackboard can so that the blackboard clean totally easily and be difficult for breaking down.

Description

A kind of new type blackboard

Technical field

This utility model is related to school supply and stationery field, especially relates to a kind of new type blackboard.

Background technology

With scientific and technological development, many schools have begun to employ Concerning Multimedia-related Teaching Methodologies, and classroom is passed through multimedia Show teaching notes, experimentation etc., but traditional blackboard does not step down from the stage of history, easily write due to it on the contrary, easy-to-use, Yi Xiu Change, cheap and in teaching, still occupy consequence.At present, the blackboard that school of China is used is still black with tradition Based on plate, the wiping method of this blackboard is hand-held blackboard eraser, is wiped repeatedly on blackboard, the area that blackboard eraser wipes every time Little, with traditional blackboard eraser blackboard wiping, cumbersome and time consuming.

Existing have been proposed for a kind of blackboard with sliding recess, as shown in figure 1, this blackboard includes blackboard body 1 and black Blackboard eraser 2；The upper and lower frame of blackboard body 1 is respectively provided with a groove 3；Respectively there is a pulley 4 at blackboard eraser 2 two ends, join with groove Close, by slip in groove for the blackboard eraser, being capable of blackboard wiping quickly.

But this blackboard still has weak point, when Sliding blackboard is wiped, affected by the gap with groove fit, with And blackboard eraser is using can be thinning due to rubbing after a period of time, lead to the contact forces of blackboard eraser and blackboard body not it is impossible to Blackboard wiping is clean；In addition pulley is possible to skid off groove when sliding in a groove.

Content of the invention

This utility model in order to overcome disadvantage mentioned above to propose, its objective is to design one kind can keep blackboard eraser with Frictional force blackboard eraser new type blackboard difficult for drop-off simultaneously between blackboard.

This utility model is to realize by technical scheme below.

A kind of blackboard, including blackboard body and blackboard eraser, wherein：

Blackboard body includes the upper side frame be arrangeding in parallel and lower frame, and described upper side frame and lower frame are respectively equipped with upper groove And low groove, the upper and lower end of blackboard eraser is respectively equipped with a top sheave and a lower sheave, and upper and lower pulley is embedded in respectively In groove and low groove；

Upper and lower groove upper surface is respectively arranged with top board and lower platen, and each pressing plate covers corresponding groove and pushes down Corresponding pulley.

Described blackboard, preferably：

Top board and lower platen are both provided with groove with the face of pulley contact, slide wherein for pulley.

Described blackboard, preferably also includes spring bearer plate and lower spring bearer plate；Wherein：

Upper spring bearer plate one end is connected with upper side frame, the upper surface of other end fexible bias pressure top board；

Lower spring bearer plate one end is connected with lower frame, the upper surface of other end fexible bias pressure lower platen.

Described blackboard, preferably：

Top board lower end and upper side frame are pivotally connected；

Lower platen upper end and lower frame are pivotally connected.

Described blackboard, preferably：

One end of spring bearer plate is embedded in the mounting groove of frame thus being fixedly connected with frame.

Described blackboard, preferably：Blackboard eraser is arranged perpendicular to upper and lower frame.

Brief description

Fig. 1 is the existing blackboard structure schematic diagram with sliding type blackboard eraser；

Fig. 2 is the blackboard structure schematic diagram with sliding type blackboard eraser of the present utility model；

Fig. 3 is the schematic diagram of upper groove voltage biasing structure left view；

Fig. 4 is the schematic diagram of low groove voltage biasing structure left view.

Specific embodiment

Describe specific embodiment of the present utility model below in conjunction with the accompanying drawings in detail.

As shown in Fig. 2 a kind of new type blackboard 20, including blackboard body 21 and blackboard eraser 22, the inclusion of blackboard body 21 is put down The upper side frame 27 of row and lower frame 27 ', described upper side frame and lower frame are respectively equipped with a upper groove 23 and a low groove 23 ', blackboard eraser 22 body is elongated, and blackboard eraser 22 is arranged perpendicular to upper and lower frame 27,27 '；The upper and lower end of blackboard eraser 22 It is respectively equipped with a top sheave 24 and a lower sheave 24 ', upper and lower pulley 24,24 ' is embedded in upper groove 23 and low groove respectively In 23 ', can roll along groove.Upper and lower groove 23,23 ' upper surfaces are respectively provided with top board 25 and lower platen 25 ', each pressing plate Cover corresponding groove and respectively in the presence of upper and lower voltage biasing structure with corresponding pulley contact.Preferably, top board 25, Lower platen 25 ' is both provided with groove, for pulley wherein slidably with the face of pulley contact.

By Fig. 2,3,4, voltage biasing structure is described separately below.

As shown in Figure 2,3, upper voltage biasing structure includes spring bearer plate 26, and Fig. 3 shows from the position towards from the point of view of blackboard angle In top board 25 left end upper voltage biasing structure it is preferred that the upper bias mechanism positioned at top board 25 right-hand member, right side can also be increased Voltage biasing structure is identical with left side voltage biasing structure.As shown in figure 3, upper spring bearer plate 26 one end is connected (embedded fixation with upper side frame 27 On top in the mounting groove of frame 27), one end fexible bias pressure in the upper surface of top board 25, the lower surface bottom of top board 25 with upper Frame 27 bottom is connected by pivot 28, by the effect of upper spring bearer plate 26 so that top board 25 compresses top sheave 24.

As shown in Figure 2,4, lower voltage biasing structure includes lower spring bearer plate 26 ', and Fig. 4 shows from the position towards from the point of view of blackboard angle In lower platen 25 ' left end lower voltage biasing structure it is preferred that the lower bias mechanism positioned at lower platen 25 ' right-hand member can also be increased, right Lateral deviation laminated structure is identical with left side voltage biasing structure.As shown in figure 4, lower spring bearer plate 26 ' one end is connected with lower frame 27 ' (embedding It is fixed in the mounting groove of lower frame 27 '), the upper surface of one end fexible bias pressure lower platen 25 ', on the lower surface of lower platen 25 ' Portion is connected by pivot 28 ' with lower frame 27 ' top, by the effect of lower spring bearer plate 26 ' so that lower platen 25 ' compression under Pulley 24 '.

Above upper and lower spring bearer plate 26,26 ' is three folded structures, is made up of elastic metallic.First flanging is short straight Side, the second flanging is long straight flange, is vertically connected with the first flanging, and the 3rd flanging is substantially circular arc, one end and the second flanging phase Even.

By this utility model, when Sliding blackboard wipes 22, the upper and lower pulley of this blackboard eraser 22 is subject to upper and lower pressing plate , so that the bristle of blackboard eraser 22 can be close to blackboard body 21, wiping effect is very clean, simultaneously in pulley rolling for bias effect During ensure that pulley will not depart from from groove.In addition, the blackboard eraser 22 of the present invention can be 1 may also be two structures Identical blackboard eraser, in the case of two, two blackboard erasers are separately positioned on the both sides of blackboard, are available for two people and black simultaneously Plate, in the case of in addition can also damaging at one, another still can normally use.

This utility model solves that the existing blackboard-cleaning with slide rail blackboard meal is not clean and blackboard eraser is caducous asks Topic is so that blackboard-cleaning totally and is less prone to fault.

Claims (6)

1. a kind of blackboard, including blackboard body and blackboard eraser it is characterised in that：

Blackboard body includes the upper side frame be arrangeding in parallel and lower frame, described upper side frame and lower frame be respectively equipped with upper groove and under Groove, the upper and lower end of blackboard eraser is respectively equipped with a top sheave and a lower sheave, and top sheave and lower sheave are embedded in respectively In groove and low groove；

The upper surface of upper groove and low groove is respectively arranged with top board and lower platen, and each pressing plate covers corresponding groove and presses Live corresponding pulley.

2. blackboard according to claim 1 it is characterised in that：

Top board and lower platen are both provided with groove with the face of pulley contact, slide wherein for pulley.

3. blackboard according to claim 1 is it is characterised in that also include spring bearer plate and lower spring bearer plate；Wherein：

Upper spring bearer plate one end is connected with upper side frame, the upper surface of other end fexible bias pressure top board；

Lower spring bearer plate one end is connected with lower frame, the upper surface of other end fexible bias pressure lower platen.

4. blackboard according to claim 2 it is characterised in that：

Top board lower end and upper side frame are pivotally connected；

Lower platen upper end and lower frame are pivotally connected.

5. blackboard according to claim 2 it is characterised in that：

One end of spring bearer plate is embedded in the mounting groove of frame thus being fixedly connected with frame.

6. blackboard according to claim 1 it is characterised in that：Blackboard eraser is arranged perpendicular to upper and lower frame.