CN208271425U

CN208271425U - Teaching apparatus for primary school maths

Info

Publication number: CN208271425U
Application number: CN201621039053.5U
Authority: CN
Inventors: 左林华; 陈多仁
Original assignee: National College Of Education In Gansu
Current assignee: National College Of Education In Gansu
Priority date: 2016-08-29
Filing date: 2016-08-29
Publication date: 2018-12-21
Anticipated expiration: 2026-08-29

Abstract

The utility model relates to teaching apparatus for primary school maths, including cabinet, first is set side by side in cabinet, second, third and fourth digit wheel, first, second, third and fourth digit wheel passes through first rotating shaft and is movably fixed on the intracorporal partition of case, first rotating shaft is equipped with secondary bevel gear, secondary bevel gear matching is connected with master bevel gear, master bevel gear is fixed in the second shaft, second shaft is pierced by cabinet and is positively connected with rotating handle, cabinet front is equipped with and first, second, the corresponding window of third and fourth digit wheel, first, groove is equipped between the corresponding window of second digit wheel, plus-minus symbol is equipped in groove, sliding is equipped with baffle in groove, push handle is provided on baffle, second, equal sign is provided between the corresponding window of third digit wheel；The utility model has good interest, the interest that pupil practices unit number plus and minus calculation can be improved, to improve learning efficiency.

Description

Teaching apparatus for primary school maths

Technical field

The utility model relates to teaching equipment technical fields, specifically teaching apparatus for primary school maths.

Background technique

Mathematics is a subject for studying the concepts such as quantity, structure, variation, space and information, is belonged in terms of certain angle In one kind of formal science.Mathematics plays irreplaceable role, and study in development of human history and social life With the research essential basic tool of modern science and technology.

The basis of mathematics be then add, subtract, the operation of multiplication and division, existing most arithmetic is all enterprising in blackboard by teacher Running hand is write, and the rigid study of numbers operation of interest, especially pupil is lacked, not interested for digital addition and subtraction, and study is caused to be imitated Rate is lower.

Utility model content

The utility model to be provided is teaching apparatus for primary school maths.

In order to solve the above technical problems, the utility model is the following technical schemes are provided: teaching apparatus for primary school maths, including case Body, is set side by side with the first, second, third and fourth digit wheel in cabinet, on the first, second, third and fourth digit wheel Its periphery is provided with ten integers of 0-9, the first, second, third and fourth digit wheel is movably fixed to by first rotating shaft On the intracorporal partition of case, secondary bevel gear is provided in first rotating shaft, secondary bevel gear matching is connected with master bevel gear, and master bevel gear is solid It being scheduled in the second shaft, the second shaft is pierced by cabinet and is positively connected with rotating handle, cabinet front is provided with first, second, The corresponding window of third and fourth digit wheel, be arranged between the corresponding window of the first, second digit wheel it is fluted, in groove It is provided with the plus-minus symbol being distributed up and down, sliding is provided with the baffle for blocking its internal single symbol, baffle in groove On be provided with push handle, be provided with equal sign between the corresponding window of second, third digit wheel.

Several suckers are arranged in the scheme advanced optimized, the box back surface.

The scheme further optimized, cabinet front side are hinged with rotating bar, are provided in rotating bar along its length The sliding slot in direction is spent, chalk sleeve is slidably connected in sliding slot, is arranged with chalk in chalk sleeve.

The scheme further optimized is provided with graduation mark in the rotating bar.

The scheme further optimized, the cabinet front are additionally provided with clock.

The utility model has the beneficial effect that the utility model has good interest compared with prior art, The interest that pupil practices unit number plus and minus calculation can be improved, to improve learning efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the overlooking structure diagram of the utility model；

Fig. 3 is the structural schematic diagram of baffle and push handle；

Fig. 4 is structural schematic diagram when the utility model uses subtraction.

Figure label are as follows: 1- cabinet, the first digit wheel of 2-, the second digit wheel of 3-, 4- third digit wheel, the 4th number of 5- Wheel, 6- first rotating shaft, 7- partition, 8- pair bevel gear, 9- master bevel gear, the second shaft of 10-, 11- rotating handle, 12- window, 13- groove, 14- baffle, 15- push handle, 16- sucker, 17- rotating bar, 18- sliding slot, 19- chalk sleeve, 20- chalk, 21- clock.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "upper", "lower", " preceding ", The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on Orientation or positional relationship shown in the drawings is merely for convenience of description the utility model, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply signified relatively heavy The property wanted implicitly indicates indicated technical characteristic quantity.Define " first " as a result, the feature of " second " can be expressed or Person implicitly includes at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention, It is a, three etc., unless otherwise specifically defined.

Referring to attached drawing it is found that teaching apparatus for primary school maths, including cabinet 1, it is set side by side with first, second in cabinet 1, the Three and the 4th digit wheel 2,3,4,5 is provided with 0-9 along its periphery on first, second, third and fourth digit wheel 2,3,4,5 Ten integers, the first, second, third and fourth digit wheel 2,3,4,5 are movably fixed in cabinet 1 by first rotating shaft 6 On partition 7, secondary bevel gear 8 is provided in first rotating shaft 6, the secondary matching of bevel gear 8 is connected with master bevel gear 9, and master bevel gear 9 is fixed In the second shaft 10, the second shaft 10 is pierced by cabinet 1 and is positively connected with rotating handle 11, drives number by rotating handle 11 Wheel rotation, 1 front of cabinet be provided with the corresponding window 12 of the first, second, third and fourth digit wheel 2,3,4,5, pass through Window 12 can see the individual digit on digit wheel, be provided between the first, second digit wheel 2,3 corresponding windows 12 recessed Slot 13 is provided with the plus-minus symbol being distributed up and down in groove 13, and sliding is provided with internal single for blocking it in groove 13 The baffle 14 of symbol is provided with push handle 15 on baffle 14, and by push and block plate 14 in push handle 15, baffle 14 blocks plus sige, that is, has an X-rayed Use of numerals subtraction on corresponding first, second digit wheel 2,3 of window 12, baffle 14 block minus sign, then window 12 it is corresponding first, Use of numerals addition on second digit wheel 2,3 is provided with equal sign between second, third digit wheel 3,4 corresponding windows 12, Number in the correspondence of window 12 third, the 4th digit wheel 4,5 is operation result.

In embodiment, several suckers 16 are arranged in 1 back side of cabinet, cabinet 1 can be fixed on blackboard by sucker 16 Or on desktop.

In embodiment, the positive side of the cabinet 1 is hinged with rotating bar 17, is provided with along its length in rotating bar 17 Sliding slot 18, slidably connect chalk sleeve 19 in sliding slot 18, chalk 20 be arranged in chalk sleeve 19, rotary motion bar 17 can lead to Chalk 20 is crossed in blackboard upper drawing circle arc, by sliding chalk sleeve 19, to adjust the radius of circular arc.

In embodiment, graduation mark is provided in the rotating bar 17.

In embodiment, 1 front of cabinet is additionally provided with clock 21.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims

1. teaching apparatus for primary school maths, including cabinet, it is characterised in that: be set side by side with first, second, third and in cabinet Four digit wheels are provided with ten integers of 0-9 along its periphery on the first, second, third and fourth digit wheel, and first, second, Three and the 4th digit wheel passes through first rotating shaft and is movably fixed on the intracorporal partition of case, and secondary cone tooth is provided in first rotating shaft Wheel, secondary bevel gear matching are connected with master bevel gear, and master bevel gear is fixed in the second shaft, and the second shaft is pierced by cabinet front company It is connected to rotating handle, cabinet front is provided with window corresponding with the first, second, third and fourth digit wheel, and first, second It is arranged fluted between the corresponding window of digit wheel, is provided with the plus-minus symbol being distributed up and down in groove, sliding is set in groove It is equipped with the baffle for blocking its internal single symbol, is provided with push handle on baffle, the corresponding perspective of second, third digit wheel Equal sign is provided between window.

2. teaching apparatus for primary school maths according to claim 1, it is characterised in that: several suctions are arranged in the box back surface Disk.

3. teaching apparatus for primary school maths according to claim 1, it is characterised in that: cabinet front side, which is hinged with, to be turned Lever is provided with sliding slot along its length in rotating bar, slidably connects chalk sleeve in sliding slot, be arranged with powder in chalk sleeve Pen.

4. teaching apparatus for primary school maths according to claim 3, it is characterised in that: be provided with scale in the rotating bar Line.

5. teaching apparatus for primary school maths according to claim 1, it is characterised in that: when the cabinet front is additionally provided with Clock.