JPH0717053Y2 - Folding binoculars - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to folding binoculars that are convenient to carry.

(Prior Art) Conventionally, as this type of folding binocular, there is one disclosed in Japanese Utility Model Laid-Open No. 63-177805.

These binoculars have a pair of left and right triangular eyepiece frames equipped with eyepieces that are pivotally connected to each other so that they can be opened and closed and swingable, and can be retracted into the eyepiece frame at the front of the eyepiece frame in the open state. The objective lens frame housed in is fixed by pulling it out, and the optical axes of the objective lens provided in the objective lens frame and the eyepiece lens are made to coincide with each other. Then, when the objective lens is folded so as to be immersed in the eyepiece lens frame, the planar shape becomes a substantially square shape.

(Problems to be solved by the invention) By the way, since the structure of the binoculars is complicated, assembly is troublesome, and the molding die is complicated, so that it takes time to process the die, it is expensive, and In the tatami-mat state, the eyepiece lens is exposed, so that it is easily soiled, and since the folded shape is square, it is difficult to hold by hand.

The present invention has been made in view of the above situation,
Its purpose is a compact foldable type that has a simple structure, is easy to assemble, can easily manufacture a molding die, can be obtained at low cost, does not expose the eyepiece in the folded state, and is easy to hold by hand. To provide binoculars.

(Means for Solving the Problem) In the present invention, in order to achieve the above-mentioned object, the following technical means were taken.

That is, the present invention includes a body frame 3 having a pair of left and right eyepieces 2 and having both left and right ends and a front surface opened, a viewing window 4 provided on the eyepiece 2 side, and the front and left and right opposite inner surfaces are opened. A pair of left and right covers 5 slidably fitted on the left and right sides of the body frame 3 in the left and right directions.
And has an objective lens 6 in the front part, the rear part is opened, and is fitted in and out of the body frame 3 and the cover 5
A pair of left and right objective lens frames 7 pivotally supported by the eye and an urging spring 8 for constantly urging the objective lens frame 7 in the projecting direction. When the objective lens frame 7 is projected, the eyepiece lens 2 and the objective lens The feature is that the optical axes of 6 are aligned.

(Operation) According to the present invention, when changing from the folded state to the used state,
When the pair of left and right covers 5 are respectively held by hand and pulled outward to the left and right, the objective lens frame 7 is slightly rotated by the sliding of the covers 5, and then the urging force of the urging spring 8 causes the objective lens frame 7 to move. It is further rotated and fixed in a protruding state, and the optical axes of the eyepiece lens 2 and the objective lens 6 coincide with each other,
That state is held by the biasing spring 8 and becomes ready for use.

Then, when the objective lens frame 7 is folded, the left and right covers 5 are respectively held by hand, and the objective lens frame 7 is pressed inward by one finger (for example, an index finger) so that the objective lens frame 7 is rotated. As a result, both covers 5 also slide inwardly, the frame 7 retreats into the main body frame 3, the objective lens 6 and the eyepiece 2 are covered by the cover 5, and a substantially rectangular parallelepiped folded state is obtained. .

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In the drawings, reference numeral 1 denotes folding binoculars, a pair of left and right body frames 3 having a pair of left and right eyepieces 2 and a viewing window 4 which are fitted on the left and right sides of the body frame 3 so as to be slidable in the left and right directions. A cover 5, a pair of left and right objective lens frames 7 having an objective lens 6 and fitted in and out of the body frame 3, and a biasing spring 8 for biasing the objective lens 7 in an outward projecting direction. Made of

The body frame 3 is integrally molded of synthetic resin,
It has a U shape when viewed from the left and right sides, and a partition wall 9
The left and right ends and the front surface are open, and the rear wall 10 is provided with a mounting portion 11 having an eyepiece lens mounting hole 11a so as to project rearward, and the eyepiece 2 is fitted and fixed in the hole 11a. The frame 3 is notched at both front left and right corners to allow the biasing spring 8 to be fitted therein, and on its upper and lower surfaces, substantially arcuate guide holes 12 are provided at both left and right ends in a vertically penetrating manner. The rear end of the cover 5 is a locking portion 13 extending in the front-rear direction, and two protruding ridges 14 having a low height are provided on the upper and lower outer surfaces to cover the cover 5.
Has a small sliding resistance and can slide smoothly, and a locking projection 15 is provided near the partition wall 9.

The cover 5 is formed in a vertically symmetrical shape and is made of synthetic resin in a vertically divided manner. When the upper and lower parts are assembled together, the cover 5 has a substantially U-shape when viewed from the front. The viewing window 4 is provided.
As shown in FIG. 6, the viewing window 4 coincides with the eyepiece 2 as shown on the right side of FIG.
In the folded state, the eyepiece 2 is provided at a position where it cannot be seen as shown on the left side of the drawing, and the eyepiece 2 is not exposed in the folded state.

Then, as shown in FIG. 10, on the division surface of the cover 5,
Fitting step portions 17 and 18 are formed, a locking hook 19 and an engaging pin 20 are provided at appropriate places on one side, and a locking recess 21 and an engaging hole 22 are provided on the other side of the hook 19 and the pin 20. It is provided corresponding to. Further, on the inner surface of the rear wall 16 of the cover 5, a stopper 23 is provided so as to project inward in the left-right direction of the viewing window 4. The sliding limit is regulated. Further, on the upper and lower inner surfaces of the cover 5, a front opening is formed.
The objective lens frame pivot shafts 24 are provided so as to project toward the side wall of the 5a, and the annular portion 8a of the biasing spring 8 is externally fitted to one of the upper and lower base portions of the shaft 24, and is engaged with the inner side facing each other. A stop recess 25 is provided so that the locking projection 15 of the main body frame 3 engages with the locking recess 25 in the folded state of the cover 5 so that the cover 5 does not slide outward naturally. is there.

The objective lens frame 7 is in the shape of a rectangular tube made of synthetic resin, the objective lens 6 is fitted in the front opening thereof, and the shaft holes 26 are provided on the upper and lower surfaces near the rear opening facing the left and right in the lateral direction. A guide pin 27 is projectingly provided on the inner side opposite to each other in the left-right direction. The pivot shaft 24 is loosely fitted in the shaft hole 26, and the guide pin 27 is movably inserted in the guide hole 12.

Further, locking notches 28 for the biasing spring 8 are provided at the upper and lower edges of the rear opening of the objective lens frame 7, and the biasing spring 8 is provided.
One end 8b is locked. It should be noted that low-height ridges (not shown) (similar to the ridges 14 of the main body frame 3) are provided on the upper and lower outer surfaces of the objective lens frame 7 so as to reduce sliding resistance and smooth the surface. You may make it possible to perform various rotations.

Next, the operation of the present invention will be described. First, FIG.
In the folded state (that is, unused state) shown in FIG. 9,
The objective lens frame 7 is housed in the main body frame 3, the eyepieces 2 are closed by the rear wall 16 of the cover 5, and the guide pins 27 are locked by the locking portions 13 of the guide holes 12. Since the locking projection 15 is engaged with the locking recess 25 of the cover 5, the cover 5 is pressed by the biasing force of the biasing spring 8.
Also, the folded state is maintained without the objective lens frame 7 sliding.

Therefore, in order to put it into a use state, when the pair of left and right covers 5 are respectively held by hand and pulled outward in the left and right directions (arrows (a) and (b) directions in the drawing), the locking projections 15 are released from the locking recesses 25. The guide pin 27 is released from the locking portion 13 of the main body frame 3 because the shaft hole 26 portion of the objective lens frame 7 is pulled out to the left and right through the pivot shaft 24 while the guide pin 27 is released. The urging force of the urging spring 8 causes the objective lens frame 7 to rotate about the pivot shaft 24 in the directions of arrows (c) and (d) in the figure and project from the front opening 5a of the cover 5. Then, the stopper 23 comes into contact with the eyepiece lens mounting portion 11 and stops, and
The guide pin 27 comes into contact with the front end of the guide hole 12, and the optical axes of the eyepiece lens 2 and the objective lens 6 coincide with each other, so that the eyepiece lens 2 is in a usable state. In this state of use, since the objective lens frame 7 is pressed against the end of the guide hole 12 of the main body frame 3 by the urging force of the urging spring 8, the cover 5 faces inward (arrow (e) (f) in the figure). It does not move even if pressed in the direction).

Next, in the folded state, the left and right covers 5 are held in their respective hands, and both outer sides of the objective lens frame 7 are urged by the index fingers in the directions of arrows (g) and (h) in FIG. When pressed against the biasing force of 8, the objective lens frame 7 rotates about the pivot shaft 24, and when the guide pin 27 reaches the locking portion 13 of the guide hole 12, the objective lens frame 7 is guided. Since it rotates in the same direction about 27, the cover 5 is pulled and slid in the opposite inward direction (arrow (e) (f) direction in the figure) via the pivot shaft 24, and FIGS. The folded state shown in FIG. 9 is obtained.

In this way, the binoculars 1 can be operated with one touch from the used state to the folded state and from the folded state to the used state.

The present invention is not limited to the above embodiment, but can be modified in design as appropriate.

(Effects of the Invention) As described above, the present invention includes a body frame 3 having a pair of left and right eyepieces 2 with both left and right ends and a front surface open, and a viewing window 4 provided on the eyepiece 2 side and the front and left and right sides. The pair of left and right covers 5 are slidable in the left and right directions on the left and right sides of the body frame 3, and the pair of left and right covers 5 are open. The objective lens frame includes a pair of left and right objective lens frames 7 that are fitted in and out of the cover 3 and pivotally supported by the cover 5, and a biasing spring 8 that constantly biases the objective lens frame 7 in the protruding direction. Since the optical axes of the eyepiece lens 2 and the objective lens 6 are made to coincide with each other in a state where 7 is projected, the structure is simple and compact, and the assembling is easy. It is easy and inexpensive to obtain, can be operated with one touch, and has a rectangular parallelepiped shape that makes it easy to hold by hand. The eyepiece lens 2 is not exposed in the folded or unnecessary state, and there is no risk of getting dirty with fingerprints on the hand, making it perfect for carrying. It is convenient.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a cross-sectional plan view in use, FIG. 2 is the same front view, and FIG. 3 is the same plan view.
4 is a side view of the same, FIG. 5 is a sectional view taken along the line AA of FIG.
FIG. 6 is a rear view showing the right half in a used state and the left half in a folded state, FIG. 7 is a cross-sectional plan view of the folded state, FIG. 8 is the same plan view, and FIG. 9 is a front view of the same. FIG. 10 is an exploded vertical sectional view of the cover. 1 ... Binoculars, 2 ... Eyepieces, 3 ... Main body frame, 4 ...
Viewing window, 5 ... Cover, 6 ... Objective lens, 7 ... Objective lens frame, 8 ... Energizing spring.

Claims (1)

[Scope of utility model registration request] 1. A body frame (3) having a pair of left and right eyepieces (2) whose left and right ends and a front surface are open, and a viewing window (4) provided on the eyepiece (2) side and facing the front and left and right sides. The inside is open and the body frame (3)
A pair of left and right covers (5) that are slidably fitted to the left and right sides of the left and right sides, and an objective lens (6) in the front part, and the rear part is opened, and can be inserted into and removed from the body frame (3). A pair of left and right objective lens frames (7) fitted and pivotally supported by the cover (5), and a biasing spring (8) for constantly biasing the objective lens frame (7) in the protruding direction, Foldable binoculars characterized in that the optical axes of the eyepiece lens (2) and the objective lens (6) coincide with each other when the objective lens frame (7) is projected.