CN203748821U - Improved chalk box - Google Patents

Abstract

The utility model discloses an improved chalk box which consists of a wooden bottom plate as well as a first wooden side plate, a second wooden side plate, a third wooden side plate and a fourth wooden side plate which are combined in sequence, wherein the height of the first wooden side plate is greater than that of the third side wooden side plate, so that an opening of the chalk box is not in a horizontal plane but in an inclined plane; the chalk box is internally provided with a hard iron wire net; the diameter of a net hole is 0.2cm; the iron wire net is arranged in an inclined manner; one side of the iron wire net is fixed at the bottom of a third side surface; the other side of the iron wire net is fixed on a first side surface; the inclined plane is parallel to the opening of the chalk box; a piece of rubber skin is further adhered outside the bottom plate. The chalk box has the characteristics of novel structure and convenience in use of teachers.

Description

A kind of improved chalk box

Technical field

The utility model relates to a kind of teaching aid, relates in particular to a kind of improved chalk box of placing chalk.

Background technology

Due to current, at the classroom teaching of school, chalk adds the teaching means of blackboard or is mostly taught handsome employing.And in teaching process, chalk is to be all generally placed on base plate and opening all in the chalk holder box body of level, when use, because chalk is all parallel and squeeze in box body, and due to floor level, each taking and placing are all inconvenient, especially for new chalk, while picking and placeing, easily cause chalk fracture, use after length difference at chalk, the chalk of placement seems in disorder.

Summary of the invention

In order to solve the problems of the technologies described above, the utility model provides a kind of improved chalk box.

This improved chalk box by a wooden base plate and in turn engage first, second, third, fourth wooden side plate form, wherein the height of the first side plate is higher than the 3rd side plate, making the opening of chalk holder is not horizontal plane, but presents the plane of an inclination;

Cassette interior has a hard wire netting, and mesh diameter is 0.2 centimetre, slant setting, and a side is fixed on the bottom of the 3rd side plate, and opposite side is fixed on the first side plate, and inclined plane is parallel with the opening of chalk holder;

Base plate external is also pasted with rubber peel.

Brief description of the drawings

Accompanying drawing 1 is stereogram.

Accompanying drawing 2 is side view.

Detailed description of the invention

In order clearly to describe this technical scheme, by side plate called after first side 11 below of chalk holder 1, by the front side board called after relative with back side panel the 3rd side plate 12, by other two side plates called after second, four side plates 13 respectively.As shown in Figure 1.

All side plates bottom is positioned in same level and with base plate and engages, and the first side 11 plate hights, in the 4th side plate 12, make like this opening 111 of chalk holder 1 not be positioned at a horizontal plane, but present the plane of an inclination.At hard net 14 of this chalk holder 1 Content placement, the utility model is specifically selected a wire netting.Therefore it, have certain elastic hardness owing to being to be made up of iron wire.Meanwhile, cancellated setting, is conducive to make chalk bits to drop into the space between wire netting 14 and base plate.But this just for example uses, other have certain elastic hardness, and the hard net with engraved structure can.

Concrete restriction is not done at the angle of inclination of the plane tilting, as long as can ensure rational inclination, optimum angle of inclination can be between 15 degree-40 degree, more attractive in appearance like this, and in the time picking and placeing chalk, experiences more comfortable.Because wire netting 14 is parallel with inclined-plane, so wire netting 14 should be also adaptive between 15-40 degree.

The modes of emplacement of wire netting 14 and the plane parallel of above-mentioned inclination, iron wire 14 sieve bottom are fixed on the 3rd side plate bottom, and wire netting 14 tops are fixed on the first side plate 11.The about 0.2 centimetre of left and right of mesh diameter of wire netting 14.Such design, makes chalk after being placed in this chalk holder, looks from opening 111, and chalk presents the situation that length differs.Facilitate teacher from chalk holder, to take chalk.

Chalk is from chalk holder 1 in taking and placing process, and the chalk that can drop bits, can fall into chalk holder bottom by wire netting chalk bits.Meanwhile, because the diameter of wire netting 14 is approximately 0.2 centimetre, chalk will can not drop to chalk holder bottom by wire netting like this, only have chalk bits can drop into bottom.

After chalk bits are too much, teacher can be inverted chalk holder so that chalk bits are cleared out of to chalk holder.

Four side plates and base plate all adopt wood materials, in the time making, draw materials conveniently.Teacher, in the time taking chalk, need to move chalk holder sometimes on dais, and dais is generally wood materials now, so chalk holder can produce slip, drops in order to prevent chalk holder from sliding, and is also pasted with rubber peel pastes rubber peel at chalk holder base plate external.To increase chalk holder and say the friction between table top like this, reducing chalk holder and slide.Meanwhile, facilitate again teacher's moving chalk holder.

Claims (1)

1. an improved chalk box, is characterized in that:

This improved chalk box by a wooden base plate and in turn engage first, second, third, fourth wooden side plate form, wherein the height of the first side plate is higher than the 3rd side plate, making the opening of chalk holder is not horizontal plane, but presents the plane of an inclination;

Cassette interior has a hard wire netting, and mesh diameter is 0.2 centimetre, slant setting, and a side is fixed on the bottom of the 3rd side plate, and opposite side is fixed on the first side plate, and inclined plane is parallel with the opening of chalk holder;

Base plate external is also pasted with rubber peel.