CN108492710A - A kind of tellurion clock - Google Patents

Abstract

The invention discloses a globe clock. The earth model includes an earth rotation axis, a sun model, a sun movement axis, a minute hand and a minute hand rotation axis. The two ends of the earth rotation axis are respectively connected to the two ends of the sun movement axis. The earth model is installed on the earth rotation axis On the outer surface of the earth model, there is an hour scale line, and every time the earth model rotates for one hour, the pointer on the earth model changes from being aligned to one hour scale to aligning to the next hour scale; the earth model is also set along the latitude direction There are the equator, the Tropic of Capricornus and the Tropic of Cancer; the sun model is installed on the sun movement axis, the outer surface of the sun model is provided with a minute scale line, one end of the minute hand shaft extends into the sun model, and the other end is outside the sun model, and Connected with the minute hand, every 5 minutes the minute hand rotates around the axis, and the minute hand changes from being aligned to point to one minute scale to being aligned to point to the next minute scale. The invention not only can display 1-24 hours, but also can distinguish between morning and evening, and it rotates autonomously, simulating the law of movement of the sun and the earth, promoting people to learn astronomy and geography knowledge, and improving appreciation at the same time.

Description

a globe clock

technical field

The invention relates to a mechanical electric clock, in particular to a globe mechanical electric clock.

Background technique

At present, most of the clocks used by the public are disc-type mechanical electric clocks, but the traditional household clocks have a single appearance and shape, and can only display 1 to 12 hours in one revolution, and cannot distinguish between morning and evening; at the same time, the globe is for convenience. To know the earth, people imitate the shape of the earth, shrink it according to a certain ratio, and make a model of the earth—a globe. There are deformations of length, area, direction and shape on the globe, so the relationship between various scenes observed from the globe is overall and approximately correct, but the traditional globe only has the function of geography teaching aids. Manual rotation, and it is impossible for learners to intuitively feel the movement relationship between the sun and the earth and the respective rotation cycles of the sun and the earth.

Contents of the invention

Purpose of the invention: The purpose of the invention is to provide a globe clock, which can not only display 1-24 hours, but also can distinguish between morning and evening, and it rotates autonomously, simulating the movement laws of the sun and the earth, so as to promote people's learning of astronomy and geography knowledge, while improving appreciation.

Technical solution: a globe clock, the earth model, including the earth rotation axis, the sun model, the sun movement axis, the minute hand and the minute hand rotation axis, the two ends of the earth rotation axis are respectively connected to the two ends of the sun movement axis, and the earth model is installed on the earth rotation axis , the outer surface of the earth model is provided with an hour scale line, every time the earth model rotates through one hour, the pointer on the earth model changes from being aligned to point to one hour scale to aligning to point to the next hour scale; the earth model is also provided with along the latitude direction The equator line, the Tropic of Capricornus and the Tropic of Cancer; the sun model is installed on the sun movement axis, and the outer surface of the sun model is provided with a minute scale line. One end of the minute hand shaft extends into the sun model, and the other end is outside the sun model. The minute hands are connected, and every time the minute hand rotates around the axis after 5 minutes, the minute hand changes from being aligned to point to one minute scale to being aligned to point to the next minute scale.

Wherein, the hour scale lines start from the intersection of the longitudes in the northern hemisphere of the earth model and end at the intersection of the longitudes in the southern hemisphere of the earth model.

Wherein, there are 24 hour scale lines in total, and the included angle between two adjacent scale lines is 15 degrees; preferably, a pointer indicating the hour is arranged on the outer surface of the globe.

Preferably, the outer surface of the earth model is also provided with equator lines, Tropic of Capricorn lines and Tropic of Cancer lines along the latitude direction.

Further, the minute scale mark is set on a circle projected on the outer surface of the sun model with the rotation axis of the minute hand as the center and the minute hand as the radius.

Wherein, there are 12 minute scale lines in total, and the included angle between two adjacent scale lines is 30 degrees.

Furthermore, both the sun model and the earth model are hollow spheres, and the surface of the sun model is red; batteries, timers and motors are installed inside.

Wherein, the battery in the earth model supplies power for the timer and the motor, and the motor in the earth model drives the earth model to rotate at a constant speed of 360° with the earth's rotation axis as the axis, and the rotation period is 24h; preferably, the earth model transmits and adjusts the rotation speed through gears.

Preferably, the battery in the sun model supplies power to the timer and the motor, and the motor in the sun model drives the sun model on the axis of solar motion, and the projection range of the Tropic of Cancer on the surface of the earth model on the axis of solar motion is used as the range of motion to reciprocate Movement, preferably, the sun model achieves reciprocating motion through a crank-slider mechanism, wherein the sun model is a slider, and the sun motion axis is a crank. Preferably, the curvature of the crank is the same as the curvature of the outer surface of the earth model.

The motor in the sun model also drives the minute hand to rotate 360° with the rotation axis of the minute hand as the axis, and the rotation period is 1h; preferably, the sun model transmits and adjusts the rotation speed through gears.

Further, a cover is installed outside the clock bracket.

Further, the material of the outer cover is plexiglass.

Working principle: The earth model is evenly engraved with hour scales along the meridian direction, and the angle between every two adjacent scales is 15 degrees. The internal motor of the earth model drives the earth to rotate at a constant speed of 360° around the earth's rotation axis. It takes 24 hours to rotate a circle. That is, every time the earth model rotates for one hour, the pointer on the earth model changes from being aligned to point to one hour scale to being aligned to point to the next hour scale. The minute scale line on the sun model is set on the circle centered on the rotating shaft of the minute hand, and the minute hand is the radius. On the circumference projected on the outer surface of the sun model, the angle between two adjacent minute scale lines is 30 degrees. The sun model The internal motor drives the minute hand to rotate at a constant speed of 360° with the minute hand axis as the axis. It takes 1 hour to rotate a circle, that is, every 5 minutes after the minute hand rotates around the axis, the minute hand changes from being aligned to point to one minute scale to aligned to point to the next minute scale. The sun model is used as a slider, driven by the internal motor of the model, and reciprocates at a uniform speed on the crank of the sun's motion axis. The cycle of reciprocating once is a regression year (about 365 days at 6 o'clock).

Beneficial effects: compared with the prior art, the present invention has the following advantages: not only can it display 1-24 hours, it can distinguish between morning and evening, and it can rotate independently, simulating the law of motion between the sun and the earth, promoting people to learn astronomy and geography knowledge, and at the same time improving Ornamental.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Figure 2 is a schematic diagram of the structure of the sun model.

Detailed ways

The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the earth rotating shaft 3 is arranged in the clock bracket 6, and the earth model 2 is installed on the earth rotating shaft 3, and the earth model 2 rotates at a uniform speed with 24 hours as the rotation period; At both ends, the sun model 5 is installed on the sun movement axis 7, and the minute hand shaft 8 is installed on the sun model 5, which is connected with the minute hand 4, and is used as a pointer indicating the minute to rotate at a constant speed of 360°, and the time required for one rotation is 1 hour; Simultaneously, the sun model 5 is on the solar motion axis 7, with the projected range of the area between the Tropic of Cancer on the surface of the earth model 2 on the solar motion axis 7 as the motion range, through the sun model 5 as a slider, on the solar motion axis 7 Carry out reciprocating motion to display the change of the direct sun point on the earth's surface, and read the hour at the corresponding position on the earth model 2.

The earth model 2 is evenly engraved with hour scales 9 along the direction of the meridian, and the angle between every two adjacent scales is 15°. The internal motor of the earth model 2 drives the earth model 2 to rotate at a constant speed of 360° around the earth rotation axis 3, and it takes time to rotate one circle It is 24 hours, that is, every time the earth model 2 rotates for one hour, the pointer on the earth model 2 changes from being aligned to one hour scale to being aligned to point to the next hour scale.

The minute scale line 10 on the sun model 5 is set on the center of the circle with the minute hand rotating shaft 8, and the minute hand 4 is the radius. On the circumference projected on the outer surface of the sun model 5, the angle between two adjacent minute scale lines 10 30°, the motor inside the sun model 5 drives the minute hand 4 to rotate at a constant speed of 360° with the minute hand shaft 8 as the axis. Pointing to one minute scale changes to snapping to pointing to the next minute scale.

At the same time, the sun model 5 is used as a slider, driven by the internal motor of the model, and performs uniform reciprocating motion on the crank of the sun motion axis 7. The range of motion of the sun model 5 is that the Tropic of Cancer 12 and the Tropic of Cancer 13 of the earth model 2 are on the sun. Between the two projection points on the motion axis 7; the motion cycle of reciprocating once is a regression year (about 365 days at 6 o'clock).

As shown in FIG. 2 , the minute hand 4 rotates 360° on the surface of the sun model 5 with the minute hand shaft 8 as the axis, and indicates the minute according to the minute scale line 10 .

Claims (8)

1. a kind of tellurion clock, it is characterised in that：Including earth model (2), earth shaft (3), solar model (5), the sun The both ends of kinematic axis (7), minute hand (4) and minute hand shaft (8), the earth shaft (3) are separately connected the two of solar motion axis (7) End, earth model (2) are mounted in earth shaft (3), and earth model (2) outer surface is provided with small time taking line (9), often passes through One hour earth model (2) rotation, the pointer (14) on earth model (2) is directed toward a small time taking from alignment to be become being aligned It is directed toward next small time taking；The earth model (2) along latitude direction be additionally provided with equatorial line (11), the tropic of Capricorn (12) and The tropic of cancer (13)；The solar model (5) is mounted on solar motion axis (7), and solar model (5) outer surface is provided with minute Solar model (5) inside is stretched into graduation mark (10), described minute hand shaft (8) one end, and the other end is external in solar model (5), and It is connected with minute hand (4), often passes through minute hand pivoting in 5 minutes, minute hand becomes alignment from alignment one minute track of direction and refers to To next minute track.

2. tellurion clock according to claim 1, it is characterised in that：The small time taking line is respectively with warp in the earth The intersection in model (2) Northern Hemisphere be starting point, using warp earth model (2) Southern Hemisphere intersection as terminal.

3. tellurion clock according to claim 2, it is characterised in that：The small time taking line one shares 24, adjacent Angle between two graduation marks is 15 degree.

4. tellurion clock according to claim 1, it is characterised in that：The movement of the solar model (5) is ranging from Between two subpoints of the tropic of Capricorn and the tropic of cancer of earth model (2) on solar motion axis (7).

5. tellurion clock according to claim 1, it is characterised in that：The minute track line is arranged with the minute hand Shaft (8) is the center of circle, and minute hand (4) is radius, on the circumference of solar model (5) outer surface projection.

6. tellurion clock according to claim 5, it is characterised in that：The minute track line one shares 12, adjacent Angle between two graduation marks is 30 degree.

7. tellurion clock according to claim 1, it is characterised in that：In the solar model (5) and earth model (2) Portion is mounted on battery, timer and motor.

8. tellurion clock according to claim 1, it is characterised in that：Outer cover is installed outside the clock holder (6) (1)。