CN203366589U

CN203366589U - Abacus for teaching

Info

Publication number: CN203366589U
Application number: CN 201320426544
Authority: CN
Inventors: 丁宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-04
Filing date: 2013-07-04
Publication date: 2013-12-25
Anticipated expiration: 2023-07-04

Abstract

The utility model discloses an abacus for teaching. The abacus comprises a framework, shift rods and beads. Slots are arranged in opposite side surfaces of the shift rod bodies of adjacent shift rods, the slots directing to opposite channel sections, and channel sections are arranged along the length direction of the shift rods. Opposite side portions of the beads are stuck in the channel sections at two shifting rods adjacent to the external side of the beads, and the side portions are in sliding guiding cooperation with the channel sections along the length direction of the shift rods. The abacus in such a structure realizes the effects of displaying a number by poking beads, combining beads and numbers and changing numbers by moving beads. The beads are in clamped sliding and guiding cooperation with the shift rods adjacent to the outside of the beads, thereby preventing the problem that conventional beads sleeved over shift rods may crack or be damaged after long-time use, and prolonging the service lifetime of the abacus.

Description

A kind of teaching abacus

Technical field

The utility model relates to the teaching apparatus for mathematics field, is specifically related to a kind of teaching abacus.

Background technology

Abacus is a traditional culture of China, in each junior middle school's teaching, has the exercise of teaching students specially to use the course of abacus.Name is called the Chinese patent literature of " children mathematical learning equipment " (publication number CN101354846U) and has put down in writing following technical scheme: a kind of children mathematical learning equipment, this learner comprises framework, lever and bead, lever is vertically installed in framework, bead has two bottom surfaces, at the bottom surface of nine beads of every grade, once indicates " 1～9 " nine numerals; The inboard up and down of framework is parallel with two faces of bead, and bead bottom surface and lever form 90～150 angle.Although can realizing dialling pearl, this learner sees number, the combination of strain number, the number effect moving with pearl.But in this learner, bead is that cover is through on lever, and after the long-time use of junior school student as larger as power, bead easily ftractures, and causes bead to come off from lever, makes whole learner lose efficacy, and the serviceable life of learner is short.

Summary of the invention

The purpose of this utility model is to provide a kind of teaching abacus, and it is realized dialling pearl and sees number, the combination of strain number, the number effect moving with pearl, and bead is not easy cracking and comes off from lever, the long service life of abacus.

For achieving the above object, the utility model has adopted following technical scheme: a kind of teaching abacus, it is characterized in that: comprise quadra, arrange the lever that shape is arranged in framework, and between adjacent lever, number designation is carved with in the card bottom surface of establishing, the bead of the stacked layout of code, the corresponding two sides of adjacent lever offer notch to it in lever body separately respectively and point to contrary draw-in groove, draw-in groove arranges along the bar length direction of lever, the dual-side section that bead is relative is fastened on respectively in the draw-in groove of offering on two adjacent levers of its outside, and dual-side section forms slide-and-guide with draw-in groove along lever bar length direction and coordinates.

Further scheme is: described bead is along perpendicular to lever length, cross section in opposite directions is for circular or oval, and draw-in groove is and the consistent identical deep-slotted chip breaker of bead dual-side section camber line.

Described bead outside surface is that wearing layer forms, bead is inner is light material layer formation.

Described lever is the detachable cooperation that is connected with framework, and lever is along perpendicular to lever length, cross section in opposite directions is that rectangle and the corresponding dual-side of this rectangle divide to its body and offer two semicircle vacancy sections.

The abacus of said structure can not only be realized dialling pearl and see number, the combination of strain number, the number effect moving with pearl, and the lever formation clamping slide-and-guide adjacent with its two outside by bead coordinates, avoid so traditional bead to be set on lever, use for a long time bead to ftracture to damage the generation of phenomenon, the serviceable life of improving abacus.

The accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Fig. 2 is bead and the lever structural representation that matches.

Embodiment

Order of the present utility model is to provide a kind of teaching abacus, and it can not only be realized dialling pearl and see number, the combination of strain number, the number effect moving with pearl, and can avoid the generation of bead cracking phenomena, the serviceable life of improving abacus.Its scheme of taking as shown in Figure 1, a kind of teaching abacus, comprise quadra 10, the lever 11 that the interior arrangement shape of framework 10 is arranged, and number designation is carved with in 11 cards of adjacent lever bottom surfaces of establishing, the bead 12 of the stacked layout of code, the corresponding two sides of adjacent lever 11 offer notch to it in lever body separately respectively and point to contrary draw-in groove 111, draw-in groove 111 arranges along the bar length direction of lever 11, the dual-side section that bead 12 is relative is fastened on respectively in the draw-in groove 111 of offering on two adjacent levers 11 of its outside, and dual-side section forms slide-and-guide with draw-in groove 111 along lever 11 bar length directions and coordinates.The abacus of said structure can not only be realized dialling pearl and see number, the combination of strain number, the number effect moving with pearl, and the lever 11 formation clamping slide-and-guides adjacent with its two outside by bead 12 coordinate, avoid so traditional bead to be set on lever, use for a long time bead to ftracture to damage the generation of phenomenon, the serviceable life of improving abacus.Certainly a bead 12 can be arranged in nine beads 12 of every grade heterochromaticly here, the numerical digit board is set on framework 10.

Further scheme is, described bead 12 is along being circular or oval perpendicular to lever 11 length cross section in opposite directions, and draw-in groove 111 is and the consistent identical deep-slotted chip breaker of bead 12 dual-side section camber line.Described bead 12 outside surfaces are that wearing layer forms, bead 12 is inner is light material layer formation.Described lever 11 is the detachable cooperation that is connected with framework, and lever 11 is along being that rectangle and the corresponding dual-side of this rectangle divide to its body and offer two semicircle vacancy sections perpendicular to lever 11 length cross section in opposite directions.Due between the side limit section of bead 12 and the draw-in groove 11 of offering on lever 11 for slide-and-guide coordinates, so the bead 11 that outside surface is wearing layer can play wear-resisting effect, further improves the serviceable life of abacus, preferably the cross section of bead 11 be ellipse.

In a word, the utility model can effectively be realized dialling pearl and see number, the combination of strain number, the number effect moving with pearl, and bead is not easy cracking and comes off from lever, the long service life of abacus.

Above demonstration and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a teaching abacus, it is characterized in that: comprise quadra (10), arrange the lever (11) that shape is arranged in framework (10), and between adjacent lever (11), number designation is carved with in the card bottom surface of establishing, the bead (12) of the stacked layout of code, the corresponding two sides of adjacent lever (11) offer notch to it in lever body separately respectively and point to contrary draw-in groove (111), draw-in groove (111) arranges along the bar length direction of lever (11), the dual-side section that bead (12) is relative is fastened on respectively in the draw-in groove (111) of offering on adjacent two levers (11) in its outside, and dual-side section forms slide-and-guide with draw-in groove (111) along lever (11) bar length direction and coordinates.

2. teaching abacus as claimed in claim 1, it is characterized in that: described bead (12) is along being circle or oval perpendicular to lever (11) length cross section in opposite directions, and draw-in groove (111) is and the consistent identical deep-slotted chip breaker of bead (12) dual-side section camber line.

3. teaching abacus as claimed in claim 2 is characterized in that: described bead (12) outside surface is that wearing layer forms, bead (12) is inner is light material layer formation.

4. teaching abacus as claimed in claim 1, it is characterized in that: described lever (11) is the detachable cooperation that is connected with framework, and lever (11) is along being that rectangle and the corresponding dual-side of this rectangle divide to its body and offer two semicircle vacancy sections perpendicular to lever (11) length cross section in opposite directions.