JPH0412488Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to foldable binoculars made of paper.

In detail, a piece of paper is folded, the front part has an objective lens hole, the rear part has an eyepiece hole,
A case with a top and bottom surface, both side surfaces, and a visor protruding forward from both top and bottom ends of the front surface is assembled by simply attaching one visor and both sides in three places, and an objective lens is attached to the inner surface of the front surface of the case. A plate made of resin or the like integrally molded with the binoculars is attached, and a plate integrally molded with the eyepiece is attached to the inner surface of the rear surface of the case to form binoculars, and
A refraction line for focus adjustment that can be refracted outward is formed in the center of the upper and lower surfaces, and the refraction line is bent outward to be folded into a flat shape. By pushing inward, it opens like a box, and at that time, the refraction line at the center of both the upper and lower surfaces can be moved up and down to adjust the distance between the front and back surfaces, making it possible to focus. By making it an oval shape that is long in the horizontal direction, it can be adapted to the horizontal distance between the eyes, which differs depending on the user, and can be adapted to anyone. The upper and lower eaves protruding forward from both ends are formed by stacking two sheets of paper to provide strength, so that when folded, the upper and lower eaves cover the front surface that includes the objective lens. This not only protects the objective lens, but also increases the operating force that transmits the action of the refraction line of the upper and lower surfaces continuous to the upper and lower eaves to the left and right side parts, and the opening/closing action centering on the refraction line of the left and right side parts is increased. To provide folding binoculars characterized by uniform focusing and rapid focusing.

This invention will be explained in detail below with reference to embodiments shown in the drawings.

The binoculars of this invention are composed of three members: a sheet of paper 1, an objective lens plate 2, and an eyepiece plate 3 as shown in FIG. It has two sleeve parts 1b, 1b, 1c, and 1c facing each other, and vertical lines _l1 to _l8 are spaced apart from each other in the rectangular part 1a.
While pulling in parallel, the rectangular part 1a and the sleeve part 1b,
Lines l ₉ to _{l 12} are drawn on each boundary with 1c, and lines l ₁₃ and l ₁₄ are drawn on one of the sleeve parts 1c and 1c, and the sleeves are bent along each of the lines l ₁ to _{l 14} . . The paper 1 is divided into sections by the lines _l1 to _l14 , and extends from the left end to the right side of the rectangular part 1a, an upper eave part 4, a front part 5 between lines _l1 and _l2 , and a line _l2. Lower eave part 6 between and l ₃ , line
a lower front part 7 between l ₃ and l ₄ , a lower rear part 8 between lines l ₄ and l ₅ , a rear part 9 between lines l ₅ and l ₆ ,
Upper rear side 10 between lines l ₆ and l ₇ , line l ₇
An upper front side part 11 between and _l8 , an upper eaves part 12 extending from _l8 to the right end are provided, and sleeve parts 1b, 1b on both upper and lower sides of the front part 5 are provided with left and right side front parts 13, 14,
The sleeve portions 1c, 1c on both the upper and lower sides of the rear surface portion 9 are the left and right side rear portions 15, 16, and the gluing margins 17, 18 extend from the lines _l13 , _l14 of the sleeve portions 1c, 1c to the outer ends.
has been established.

A pair of objective lens holes 2 are provided in the front part 5 of the paper 1.
0,20 are drilled. the objective lens hole 20,
20 is a perfect circle with a diameter of about 25 mm, and the distance between the centers is
l ₁ is approximately 62mm. In addition, a pair of eyepiece holes 21, 21 are bored in the rear surface part 9, and the eyepiece holes 21, 21 have an elliptical shape that is long in the vertical direction (in the horizontal direction when assembled) in FIG. The shaft side
The distance between the centers is approximately 12 mm, and the short axis is approximately 9 mm.
l ₂ is approximately 62mm.

Further, the outer end corners of the upper eaves portions 4 and 12 at both ends of the rectangular portion 1a are rounded, and both ends of the boundary line _l3 of the lower eaves portion 6 are also rounded, and the left and right sides are also rounded. Parts 13, 14, 15,
The boundary line of 16 is also rounded.

On the other hand, the objective lens plate 2
It has a rectangular shape that can be attached to the back surface of the lens, and a pair of objective lenses 22, 22 are integrally molded with resin. The objective lenses 22, 22 are provided with the objective lens hole 2.
0 and 20, and is formed one size larger than the lens hole 20, with a diameter of approximately 30 mm. Further, the eyepiece plate 3 has a rectangular shape that can be attached to the back surface of the rear section 9, and has a pair of eyepieces 23, 23 integrally molded with resin, and the eyepiece 23 is also an eyepiece. Holes 21 and 21 are formed one size larger and have a diameter of approximately 18 mm.
It is about a perfect circle.

The objective lens plate 2 and the eyepiece plate 3 are attached in advance to the back surfaces of the front part 5 and rear part 9 of the paper 1, and then the paper 1 is folded along lines _l1 and _l14 into a box shape. assemble. At that time, the objective lens plate 2 and the eyepiece lens plate 3 are
Even if the alignment accuracy is poor, the lens 22,
23 is set one size larger than the lens holes 20 and 21, so there is no problem. Fold along each of the above lines _l1 to _l14 , overlap the upper eaves parts 4 and 12 at both ends of the rectangular part 1a, and adhere the back side, and also attach the front and rear surfaces 13 and 15, 14 and 16 of the left and right side parts. and are joined together by pasting the glue margins 17 and 18 to the back surfaces of the front parts 13 and 15. It is assembled by pasting at the three locations mentioned above, resulting in the state shown in FIGS. 2 and 3. That is, from the upper end of the front part 5 to which the objective lens 22 is attached, a two-layered upper eave part 25, which is made by overlapping the upper eaves parts 4 and 12, protrudes forward, and from the lower end of the front part 5, the lower eave part 4 A lower eave portion 26, which is made up of two folded layers of the front portion of the lower front side portion 7 (the front portion shown by the chain line in FIG. 1), projects forward. The upper and lower surfaces are composed of front and rear surfaces 11 and 10, 7 and 8, respectively, with lines l ₇ and l ₄ as boundaries, and lines l ₇ and l ₄ are refraction lines that are bent outward to separate from each other. By changing the refraction angles of the refraction lines l ₇ , l ₄ , the distance between the front and rear surfaces 5 and 9 can be changed to adjust the focal point, and the refraction lines l ₇ ,
By bending l ₄ outward, it can be folded flat as shown in FIG. Further, on both the left and right side surfaces, the boundary line l ₁₄ between the front and rear surface parts 14 and 16, and the boundary line l ₁₃ between 13 and 15.
is the refraction line at the time of folding, and the refraction line l ₁₄ ,
By bending the l ₁₃ inward toward each other, it is possible to fold it flat as shown in FIG. 4.

When using binoculars with the above configuration, the binoculars shown in Figures 2 and 3
When it is opened and used as shown in the figure, by vertically moving the refraction lines l ₇ and l ₄ on both the upper and lower surfaces, the left and right side surfaces can be connected to the refraction lines l through the upper and lower eaves parts 25 and 26 and the front part 5. ₁₃ , l ₁₄ is the center of opening and closing operation,
The focus can be adjusted by adjusting the distance between the front part 5 and the rear part 9, and since the eyepiece hole 21 is elliptical, it can accommodate differences in the distance between the user's eyes. Further, since the eaves portions 25 and 26 are provided on both the upper and lower sides of the front portion 5, there is a light shielding property, and the visibility effect is improved. Furthermore, since the eaves 25 and 26 are each made of double paper, they are strong and do not easily deform. Therefore, during the above focusing, when the refraction lines l ₇ and l ₄ on both the upper and lower surfaces are moved up and down to open and close as the refraction lines l ₁₃ and l ₁₄ on the left and right sides, the strong eaves parts 25 and 26 , the operating force is transmitted reliably, and the left and right sides open and close evenly, allowing for smooth focusing.

Also, when not in use, the refraction lines l ₇ and l ₁₃ on both the upper and lower surfaces
At the same time, the refraction lines l ₁₃ and l ₁₄ on both the left and right sides are refracted in the direction toward each other, and are folded flat as shown in FIG. 4. At that time, on one side, the rear surface 9 and the upper and lower rear side surfaces 8 and 10 are in a substantially linear continuous state, and on the other side, the upper and lower front surfaces 7 and 11 and the upper and lower eaves parts 25 and 26 are in a substantially straight line state. At the same time, it is folded inward and the front part 5 is stored. Therefore, the objective lens 22 of the front part 5 is folded while being protected by the two strong upper and lower eaves parts 25 and 26. When opening the folded state to the use state as shown in FIGS. 2 and 3, the folded state is opened simply by pushing the bent lines l ₄ and l ₇ at both ends toward each other.

As is clear from the above explanation, the binoculars according to this invention are assembled from one sheet of paper and two lens plates, so the material cost is low, and when assembling, there are three glue points on the paper. Since all that is required is the attachment and gluing of the lens plate to the paper, the processing cost is also low, and the lens plate can therefore be provided at an extremely low cost. Therefore, it can be disposable and has a wide range of uses. Further, since folding and opening operations can be performed with a single touch, it is easy to use and may be portable. Furthermore, since the focus can be adjusted easily, the precision of the binoculars is improved, and the eyepiece hole is oval so that it can be accommodated even if the distance between the user's eyes is different. It is something.

[Brief explanation of the drawing]

Figure 1 is a drawing showing the assembly parts of the binoculars according to this invention, Figure 2 is a perspective view of the binoculars of this invention seen from the objective lens side, Figure 3 is a perspective view seen from the eyepiece side, and Figure 4. is a perspective view of the folded state. 1...Paper, 2...Objective lens plate, 3...
Eyepiece plate, 5... Front part, 9... Rear part, 20... Objective lens hole, 21... Eyepiece hole, 22... Objective lens, 23... Eyepiece lens,
25, 26...Eave part, _l4 , _l7 , _l13 , _l14 ...Refraction line.

Claims (1)

[Claims for Utility Model Registration] Consists of three members: a sheet of paper 1, an objective lens plate 2, and an eyepiece plate 3. It has sleeve parts 1b, 1b, 1c, and 1c, and vertical lines _l1 to _l8 are drawn in parallel at intervals on the rectangular part 1a, and at each boundary between the rectangular part and the sleeve part. Draw lines l ₉ to _{l 12} and these lines l ₁
Each part is divided by ~l ₁₂ , and from one end to the other end in the left-right direction of the rectangular part, the upper eaves part 4, the front part 5, the lower eaves part 6, the lower front side part 7,
It is divided into a lower rear side part 8, a rear side part 9, an upper rear side part 10, an upper front side part 11, and an upper eaves part 12, and
The sleeve parts 1b, 1b provided on both the upper and lower sides of the front part 5 are the left and right side front parts 13, 14, and the sleeve parts 1c, 1c provided on the upper and lower sides of the rear part 9 are the left and right side rear parts 15, 16, and A pair of objective lens holes 20 are drilled in the portion 5, and a pair of eyepiece lenses 21 are bored in the rear surface portion 9, and these eyepiece holes 21 have an elliptical shape that becomes longer in the left and right direction when assembled. The objective lens plate 2 has a shape that can be attached to the back surface of the front section 5, and has a pair of objective lenses 22 integrally molded with resin, and similarly, the eyepiece plate 3 is attached to the back surface of the rear section 9. A pair of eyepiece lenses 23 are integrally molded with resin in a shape that can be formed, and the objective lens plate 2 and eyepiece plate 3 are pasted on the back surfaces of the front surface 5 and rear surface 9 of the paper 1. are assembled into a box shape by folding them along each of the above lines, overlapping the upper eaves parts 4 and 12 at both ends of the rectangular part 1a and pasting the back sides together, and also attaching the front and rear parts (13) of the left and right sides.
and 15), (14 and 16) are assembled by pasting the back sides of each tip, respectively, and bent forward from both the upper and lower ends of the front part 5, which has the objective lens, along the line l ₃ to form a two-layered bottom. The side eaves part and the upper eave part made of two overlapping sheets of paper pasted on both ends are protruded, and the upper part and the lower part are the front part and the back part about the center lines _l4 and _l7, respectively. It is divided into the side parts and refracted around these lines to make the focal point adjustable and foldable, and in connection with the refraction of the upper and lower surfaces, the left and right both sides also follow the line of the central adhesive part. The upper and lower eaves cover the upper and lower sides of the front part when folded.
These folding binoculars are characterized by a structure in which the upper and lower eaves cover the entire front part.