CN204348241U

CN204348241U - One demonstrator in simple and easy time

Info

Publication number: CN204348241U
Application number: CN201520036665.8U
Authority: CN
Inventors: 孙居永; 孙居鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-01-20
Filing date: 2015-01-20
Publication date: 2015-05-20
Anticipated expiration: 2025-01-20

Abstract

The utility model discloses demonstrator in a kind of simple and easy time, comprise through scale, round the clock chassis and time disk, time disk comprises zero point through scale and 24 minor clock dial plates, bottom is positioned at through scale, zero point covers through scale top through scale, and 24 minor clock dial plates cover zero point on scale, and chassis is inserted into zero point through between scale and 24 minor clock dial plates from left side round the clock, be that axle center is fixed together through scale and time disk with the center of circle, can rotate around stationary shaft through scale.Have the following advantages: structure is simple, be easy to make, easy to use, classroom demonstrating visual image, student is convenient to the understanding to date and time interpretation.

Description

One demonstrator in simple and easy time

Technical field

The utility model relates to demonstrator in a kind of simple and easy time, belongs to teaching equipment field.

Background technology

Multimedia technology widely using at classroom teaching, although make teaching visual pattern more, but there is no entity sense, the flash courseware of demonstration or other coursewares, manufacturing process needs certain professional technique, it is so not handy to use yet, and therefore traditional teaching aid remains must obligato helper in teachers ' teaching.

In senior geography teaching material, about the computational problem of time and date, be the Focal point and difficult point in teaching, in order to break through this difficult point, combining with teaching is actual, and teacher needs to make easy teaching tool and carrys out aided education.

Utility model content

The technical problems to be solved in the utility model is for above deficiency, provide a kind of simple and easy time demonstrator, have structure simple, be easy to make, easy to use, classroom demonstrating visual image, student is convenient to the advantage of the understanding to date and time interpretation.

For solving above technical matters, the utility model is by the following technical solutions: a kind of simple and easy time demonstrator, comprise through scale, round the clock chassis and time disk, time disk comprises zero point through scale and 24 minor clock dial plates, bottom is positioned at through scale, zero point covers through scale top through scale, 24 minor clock dial plates cover zero point on scale, chassis is inserted into zero point through between scale and 24 minor clock dial plates from left side round the clock, be that axle center is fixed together through scale and time disk with the center of circle, can rotate around stationary shaft through scale.

Further, be a disk through scale, circle centre position is labeled as arctic point N, and bores an aperture, for assembly and connection at circle centre position; To the north of centered by limit N, mark out equator, 30 ° of N, 60 ° of main parallels in N, the tropic of Cancer and the Arctic Circle, and mark 0 ° and 180 ° of warps, every 30 ° of marks warp, the interval of two warps is so just made to be just in time 2 hours, separately 180 ° of warps and other warp distinguishing marks, represent date separatrix.

Further, zero point comprises the base plate of hollow and well-illuminated plastic plate through scale, the base plate of hollow is that the same circular slab suitable through the radius of scale of radius is cut at heart place in the soleplate, well-illuminated plastic plate is fixed on base plate top, bore an aperture at the circle centre position of the plastic plate covering base plate circular hollow place, and from circle centre position send out plastic plate mark out one zero point warp;

24 minor clock dial plates are hollow, and the same circular slab suitable through the radius of scale of radius is cut at heart place in the soleplate, and marks 24 hours along the circular hollow place on 24 minor clock dial plates;

The 24 minor clock dial plates made are covered and is fixed together on scale zero point, and reserve the gap of inserting chassis round the clock in left side.

Further, chassis is the chassis representing night round the clock, transparent plastic plate is selected on chassis round the clock, according to the position relationship in the polar circle on scale and equator, cut out the night hemisphere part of Northern Hemisphere winter solstice and summer solstice respectively, and on the plastic plate cut, draw the shade representing night, and mark out terminator.

Time described in the utility model demonstrator, structure is simple, is easy to make, easy to use; Can edify student thought, encourage student to raise difficult questions for discussion, consciously explore new problem, creativity ground solves new things, improves thinking ability; Application demonstrator, classroom demonstrating visual image, student is convenient to the understanding to date and time interpretation, and make student more firm to mastery of knowledge, application is more flexible, and drastically increase classroom teaching efficiency, teaching efficiency is remarkable.

Below in conjunction with drawings and Examples, the utility model is described in detail.

Accompanying drawing explanation

Accompanying drawing 1 be in the utility model embodiment simple and easy time demonstrator structural representation;

Accompanying drawing 2 be in the utility model embodiment simple and easy time demonstrator A-A cut-open view;

Accompanying drawing 3 is the structural representations on chassis round the clock in simple and easy time demonstrator in the utility model embodiment;

In figure,

1-is through scale, and 2-is chassis round the clock, 3-time disk, 11-180 ° of warp, 21-terminator, 31-zero point through scale, 32-24 minor clock dial plate, 311-base plate, 312-plastic plate, 313-warp at zero point.

Embodiment

Embodiment 1, as shown in Figure 1 and Figure 2, one demonstrator in simple and easy time, comprise through scale 1, round the clock chassis 2 and time disk 3, time disk 3 comprises zero point through scale 31 and 24 minor clock dial plate 32, bottom is positioned at through scale 1, zero point covers through scale 1 top through scale 31,24 minor clock dial plates 32 cover zero point on scale 31, chassis 2 is inserted into zero point between scale 31 and 24 minor clock dial plate 32 from left side round the clock, be that axle center is fixed together through scale 1 and time disk 3 with the center of circle, can rotate around stationary shaft through scale 1.

Be a disk through scale 1, circle centre position is labeled as arctic point N, and bores an aperture, for assembly and connection at circle centre position; To the north of centered by limit N, mark out equator, 30 ° of N, 60 ° of main parallels in N, the tropic of Cancer and the Arctic Circle, and mark 0 ° and 180 ° of warps 11, every 30 ° of marks warp, the interval of two warps is so just made to be just in time 2 hours, separately 180 ° of warps 11 and other warp distinguishing marks, represent date separatrix.

Zero point comprises the base plate 311 of hollow and well-illuminated plastic plate 312 through scale 31, the base plate 311 of hollow is that the same circular slab suitable through the radius of scale 1 of radius is cut at heart place in the soleplate, well-illuminated plastic plate 312 is fixed on base plate 311 top, bore an aperture at the circle centre position of the plastic plate 312 covering base plate 311 circular hollow place, and from circle centre position send out plastic plate 312 mark out one zero point warp 313.

24 minor clock dial plates 32 are hollow, and the same circular slab suitable through the radius of scale 1 of radius is cut at heart place in the soleplate, and marks 24 hours along the circular hollow place on 24 minor clock dial plates 32.

The 24 minor clock dial plates 32 made are covered and is fixed together on scale 31 zero point, and reserve the gap of inserting chassis 2 round the clock in left side, the making of such time disk just completes.

As shown in Figure 3, chassis 2 is the chassis representing night round the clock, transparent plastic plate is selected on chassis 2 round the clock, according to the position relationship in the polar circle on scale 1 and equator, cut out the night hemisphere part of Northern Hemisphere winter solstice and summer solstice respectively, and on the plastic plate cut, draw the shade representing night, and mark out terminator 21.

Use time demonstrator to judge the date: the first step: rotate through scale, make 180 ° of warps from zero point warp, zero point, warp was motionless, between 180 ° of warps, defined certain angular range, was the scope of today; Second step: today scope angle, with the ratio of 360 °, be exactly the ratio of global range shared by today.

Use demonstrator Extrapolation time in time: the first step: zero point warp eastwards with the angle of 180 ° of warps, be the local time of 180 ° of warps divided by 15 °; Second step: directly from demonstrator, reading warp at zero point is that warp, or 180 ° deduct above angle, and just can know which bar warp is zero point, the rule that can subtract according to local time Dong Jiaxi, calculates the local time of any warp.

The above is the citing of the utility model preferred forms, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.

Claims

1. one kind simple and easy time demonstrator, it is characterized in that: comprise through scale (1), chassis (2) and time disk (3) round the clock, time disk (3) comprises zero point through scale (31) and 24 minor clock dial plates (32), bottom is positioned at through scale (1), zero point covers through scale (1) top through scale (31), 24 minor clock dial plates (32) cover zero point on scale (31), chassis (2) are inserted into zero point through between scale (31) and 24 minor clock dial plates (32) from left side round the clock, be that axle center is fixed together through scale (1) and time disk (3) with the center of circle, can rotate around stationary shaft through scale (1).

2. a kind of simple and easy time as claimed in claim 1 demonstrator, it is characterized in that: be a disk through scale (1), circle centre position is labeled as arctic point N, and bores an aperture, for assembly and connection at circle centre position; To the north of centered by limit N, mark out equator, 30 ° of N, 60 ° of main parallels in N, the tropic of Cancer and the Arctic Circle, and mark 0 ° and 180 ° of warps (11), every 30 ° of marks warp, the interval of two warps is so just made to be just in time 2 hours, separately 180 ° of warps (11) and other warp distinguishing marks, represent date separatrix.

3. a kind of simple and easy time as claimed in claim 1 demonstrator, it is characterized in that: zero point comprises base plate (311) and the well-illuminated plastic plate (312) of hollow through scale (31), the base plate (311) of hollow is that the same circular slab suitable through the radius of scale (1) of radius is cut at heart place in the soleplate, well-illuminated plastic plate (312) is fixed on base plate (311) top, bore an aperture at the circle centre position of the plastic plate (312) covering base plate (311) circular hollow place, and send out from circle centre position and mark out warp at a zero point (313) at plastic plate (312);

24 minor clock dial plates (32) are hollow, and the same circular slab suitable through the radius of scale (1) of radius is cut at heart place in the soleplate, and marks 24 hours along the circular hollow place on 24 minor clock dial plates (32);

The 24 minor clock dial plates (32) made are covered and is fixed together on scale (31) zero point, and reserve the gap of inserting chassis (2) round the clock in left side.

4. a kind of simple and easy time as claimed in claim 1 demonstrator, it is characterized in that: chassis (2) are the chassis representing night round the clock, chassis (2) select transparent plastic plate round the clock, according to the position relationship in the polar circle on scale (1) and equator, cut out the night hemisphere part of Northern Hemisphere winter solstice and summer solstice respectively, and on the plastic plate cut, draw the shade representing night, and mark out terminator (21).