JPH0128539Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a terrestrial globe with a celestial sphere that incorporates a celestial sphere into the terrestrial globe to provide both functions.

[Prior Art] This type of globe with a celestial sphere has been available for a long time. Generally speaking, a terrestrial body imitating the earth, which is the basis of the functions of the terrestrial globe, and a celestial sphere imitating the celestial body, which is the basis of the functions of the celestial globe, are separated from each other around a line connecting the north and south poles. It was placed on a pedestal so that it could be rotated, but this made it difficult to see the lower hemisphere sides of the earth and celestial spheres, making it inconvenient to use, as one had to look down from below. On the other hand, as a solution to this inconvenience, for example, a structure in which the bow 53 itself that supports the earth body 51 and the celestial sphere 52 is pivotally mounted on the pedestal 54, and this bow 53 can be fixed by tightening the screw 55, has been proposed. 1977-
It is known from No. 173080, etc., and according to this, bow 53
The tilt of the earth body 51 and the celestial sphere 5 can be adjusted.
There is a convenience in that the lower hemisphere side of 2 is easier to see.

[Problems to be Solved by the Invention] According to the conventional technique, the inclination of the bow 53 is adjusted by means of tightening the screw 55, which is cumbersome to operate, and also requires one hand to loosen and tighten the screw 55. There was a drawback that it was difficult to adjust the inclination of the bow 53 because the fingertips were restricted.

An even more fatal drawback is that if the screw 55 is carelessly loosened without supporting the bow 53 with one hand, or if the screw 55 is not fully tightened, as shown by the chain line in Figure 4, Earth body 51 due to its own weight
At the same time that the celestial sphere 52 falls backwards, the celestial sphere 52 rises rapidly, and there is a risk of hitting someone operating the globe in front of the globe or observing the celestial sphere 52 in the face. be. This is especially dangerous for younger children.

[Means for Solving the Problems] In order to solve the above-mentioned drawbacks, the present invention has two arcuate parts supporting a terrestrial body imitating the earth and a celestial sphere imitating a celestial body so as to rotate independently. In this globe with a celestial sphere, in which a bow is tiltably supported on a pedestal, a bearing tube is fixed to the upper end of the pedestal facing forward and backward, and a rotary shaft is protruded from the back side of the bow, and a rotating shaft is attached to the bearing tube. The rotary shaft of the bow is inserted through the shaft so that the bow can be tilted left and right toward the front of the globe. An appropriate number of engagement recesses are formed by being positioned on equal diameter circles at the tip of the bearing tube, and a fitting convex portion that engages with the engagement recess is formed on the contact surface of the bow with the bearing tube. A terrestrial globe with a celestial sphere is provided.

[Operation] Pinch the bow with your fingertips and pull it out of the bushing a little to release the engagement between the engagement recess of the bushing and the fitting protrusion of the bow. Then, rotate the bow to an appropriate angle and then release your finger. Then, the bow is pulled back into the bearing cylinder, and any of the engagement grooves and the fitting protrusions are engaged again and fixed in that inclined state.

[Example] Reference numeral 1 indicates a pillar-shaped pedestal, 2 indicates a bearing cylinder which has a slight elevation angle at the upper end of the pedestal 1 and is fixed in the longitudinal direction of the pedestal 1, and 3 has two halves, large and small, on one side. It is a bow having circular arcuate parts 4a and 4b formed in the same plane, and a rotary shaft 5 is protruded from the back side of the bow 3 located between the two circular arcuate parts 4a and 4b. It is inserted into the bearing tube 2 and supported so as to be tiltable in the left and right directions toward the front of the globe. A terrestrial body 6 imitating the earth is placed in the large-diameter arc-shaped portion 4a of the bow 3, and a celestial sphere 7 imitating a celestial body is placed in the small-diameter arc-shaped portion 4b, each centered on a straight line connecting the north and south poles. Each part is supported so that it can rotate independently. Therefore, the bearing tube 2 has an inner diameter of the half length slightly larger than the inner diameter of the front half length, and a stepped portion 8 is provided at the boundary thereof, and a screw corresponding to the rotating shaft 5 is connected to the washer 9, the spring 10, and the inner diameter of the front half length. The skewer is sequentially passed through the washer 11 and inserted from the rear end opening side of the bearing sleeve 2,
The tip of the screw is screwed onto the bow 3, and the washer 9 is locked to the stepped portion 8, and the washer 11 is locked to the screw head 5a, and the spring 10 is compressed between the washers 9 and 11. As a result, the bow 3 is pulled and biased toward the rear of the bearing cylinder 2. Further, an engagement recess 12 having a large number of radial grooves is formed on the opening surface of the tip end of the bearing tube 2 on an equidiametric circle, and an engagement recess 12 having a large number of radial grooves is formed on the end surface of the bow 3 that contacts the bearing tube 2. Matching recess 12
A fitting convex portion 13 having a radial protrusion that engages with is formed.

However, the globe configured in this way is like a bow 3
Pinch it with your fingertips and pull it out from the bushing 2 a little. By doing this, the engagement between the engagement recess 12 of the bearing cylinder 2 and the insertion convexity 13 of the bow 3 is released, so as shown in FIG. Rotate it to an angle. If you release your finger from the bow 3 at that position and pull the bow 3 back into the bearing tube 2 by the tensile force of the spring 10, the engagement recess 12 and the fitting projection 13 will be engaged again and the bow 3 will be It is fixed in that tilted state. Therefore, if the bow 3 is rotated, for example, about 90 degrees so that the earth body 6 and the celestial sphere 7 are turned sideways, the lower hemisphere side can be easily viewed. In addition, in this embodiment, the earth body 6 and the celestial sphere 7
Although the case of a combination with the above has been described, it goes without saying that the celestial sphere 7 may be replaced with a lunar sphere imitating the moon.

[Effects of the invention] It is easy to use because it is possible to turn the earth body and the celestial sphere sideways or adjust their inclination to any angle by simply pulling out the bow from the bearing tube on the pedestal and turning it. is good.

In addition, when tilting a bow, it is necessary to hold and operate the bow itself in the hand, and the tilting of the bow also causes it to fall in the left and right directions toward the front, so the bow may accidentally fall over and hit your face. It can completely eliminate accidents such as bangs, and can be used safely even by children in lower grades.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a front view with main parts cut away, Fig. 2 is an exploded perspective view, Fig. 3 is an operating state diagram, and Fig. 4 is a conventional FIG. 2 is a front view showing the technique. 1...Pedestal, 2...Bearing tube, 3...Bow, 4a,
4b... Arc-shaped portion, 5... Rotation axis, 6... Earth body, 7... Celestial sphere, 12... Engagement recess, 13...
Inset convex part.

Claims (1)

[Scope of Claim for Utility Model Registration] A bow consisting of two arc-shaped parts supporting a terrestrial body imitating the earth and a celestial sphere imitating a celestial body so that they can rotate independently, is rotatably supported on a pedestal. In a globe with a celestial sphere, a bearing tube is fixed to the upper end of the pedestal facing forward and backward, and a rotating shaft is protruded from the back side of the bow. The bow is supported on a shaft so that it can be tilted left and right toward the shaft, and the rotational axis of the bow is pulled and biased toward the rear of the bearing tube, and the bow is positioned on an equal diameter circle at the tip of the bearing tube. A globe with a celestial sphere, characterized in that an appropriate number of engaging recesses are formed by the bow, and a fitting convex part that engages with the engaging recess is formed on the contact surface of the bow with the bearing tube.