CN103336551A

CN103336551A - Abacus

Info

Publication number: CN103336551A
Application number: CN2013103025449A
Authority: CN
Inventors: 张明; 卢毅; 叶鹏; 马文超
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-19
Filing date: 2013-07-19
Publication date: 2013-10-02

Abstract

The invention discloses an abacus which comprises a framework, a cross beam, stringing rods and abacus beads, wherein two ends of the cross beam are respectively connected with positions which are one third of two side edges of the framework; the cross beam is parallel to the upper and lower edges of the framework; all stringing rods are perpendicular to the cross beam and penetrate through the cross beam at equal distances; two ends of each stringing rods are connected with inner sides of the upper and lower edges of the framework. The abacus is characterized in that quarter arcs are formed at connecting parts where the upper and lower edges of the framework are connected with two side edges, so that children can use the abacus safely, longitudinal sections of abacus beads, which pass through central axial lines, are hexagons, so that slipping between fingers and the abacus beads is not easy to happen, the wrong calculated results are reduced.

Description

A kind of abacus

Technical field

The present invention relates to a kind of financial apparatus, particularly a kind of abacus.

Background technology

At present in teaching and the abacus that adopts in calculating be generally " last two times five pearls " abacus and " on once four pearls " abacus.

Traditional " the last two times five pearls " abacus of China is to adopt a kind of abacus hexadecimal and that take to let the hair grow and take advantage of, adopt under the situation of division scheduling algorithm people; It is current increasing that what adopt is " on once four pearls " abacus.But it is excessive to place value system that " on once four pearls " abacus is difficult for allowing child understand by tired numeral system in the middle of the process of carrying out preschool education, also is difficult for producing not only image but also symbol intuitively.And use existing product, without any need for the overseas rudimentary knowledge of other rechoning by the abacus, directly perceived with bead fully, just can generate the required rechoning by the abacus symbol of whole instruction, can also embody the basic skills " identical transformation " in the teaching, thereby can make child below 5 years old understand the reason of rechoning by the abacus, be familiar with, understand, grasp the rechoning by the abacus symbol.

The tradition bead is circular mostly, and its side is arc, and the user is skidded between finger and the bead when dialling bead easily, finally causes whole result of calculation mistake to occur, and check gets up to waste time and energy.

And the framework of traditional abacus is rectangle, and has very sharp-pointed corner angle, and it is injured that the child bumps to corner angle in use easily.

Summary of the invention

At problems of the prior art, the object of the present invention is to provide a kind of childhood teaching that makes things convenient for, use the abacus of dialing bead safely, easily.

In order to achieve the above object, the present invention is by the following technical solutions: a kind of abacus, comprise framework, crossbeam, boom and bead, described crossbeam two ends are connected to two side 1/3 places of framework, described crossbeam is parallel to the both sides up and down of framework, described each boom is perpendicular to crossbeam and equidistantly pass crossbeam, and the two ends of described boom are connected the inboard, both sides up and down of framework, and the coupling part that it is characterized in that the both sides up and down of described framework and two sides is 1/4 circular arc.The profile that described bead is crossed the axis is hexagon.

After adopting technique scheme, the present invention has following beneficial effect: four angles of Abacus frame are 1/4 circular arc, the child is safer when in use, the profile that bead is crossed the axis is that hexagon makes the user when dialling bead, be difficult for skidding between finger and the bead, reduce the mistake that result of calculation occurs.

Description of drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 is left view of the present invention.

Among the figure: 1, framework 2, crossbeam 3, boom 4, bead.

Embodiment

According to Figure of description and specific embodiment the present invention is further explained below.

As shown in Figure 1, a kind of abacus, comprise framework 1, crossbeam 2, boom 3 and bead 4, described crossbeam 2 two ends are connected to two side 1/3 places of framework 1, described crossbeam 2 is parallel to the both sides up and down of framework 1, described each boom 3 is perpendicular to crossbeam 2 and equidistantly pass crossbeam 2, and the two ends of described boom 3 are connected the inboard, both sides up and down of framework 1, and the coupling part that it is characterized in that the both sides up and down of described framework 1 and two sides is 1/4 circular arc.The profile that described bead 4 is crossed the axis is hexagon.

Claims

1. abacus, comprise framework, crossbeam, boom and bead, described crossbeam two ends are connected to two side 1/3 places of framework, described crossbeam is parallel to the both sides up and down of framework, described each boom is perpendicular to crossbeam and equidistantly pass crossbeam, the two ends of described boom are connected the inboard, both sides up and down of framework, and the coupling part that it is characterized in that the both sides up and down of described framework and two sides is 1/4 circular arc.

2. a kind of abacus according to claim 1 is characterized in that it is hexagon that described bead is crossed the profile of axis.