JP2544370Y2 - Eyepiece structure of binoculars - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to binoculars, and more particularly, to the structure of a light-shielding eyepiece (eyepiece eyepiece) of an eyepiece.

[0002]

2. Description of the Related Art Conventional binoculars
It was detachably or interchangeably attached to the rear of the eyepiece. This is because, if the light-shielding eye is fixed, when a spectacle user uses the light, it is in the way and a correct eye point cannot be secured. In order to eliminate the inconvenience of attaching and detaching or replacing the light-shielding eye when using the naked eye and when using glasses, Japanese Utility Model Publication No. 47-5089 discloses that the light-shielding eye can be slid in the optical axis direction with respect to the fixed frame. An eyepiece structure biased in the protruding direction by a spring has been proposed. When the naked eye is used, it is held at the position where the spring protrudes, and when the eyeglasses are used, it is pushed in and clicked to hold it at the pushed-in position.

However, this eyepiece structure has the following problems. First, since the light-shielding eye projects with the naked eye due to a spring force, when the observer presses the light near the eyes, it is pushed in, and a correct eye point cannot be secured. Of course, if the spring force is increased, such a problem does not occur, but if so, a large amount of operating force is required for pushing. Second, since the light-shielding eye is supported by a fixed frame, if the eyepiece frame is moved in the optical axis direction to adjust the diopter, the distance between the rear end of the light-shielding eye and the eyepiece changes. Also, it is not possible to secure a correct eye point. Third, the light-shielding eye is most stable when protruded by the spring, and since the spring is not fatigued, it is normal to hold the eyepiece in the protruding position. However, in such a case, the light-shielding eye is in the way when stored in the case or when carried. That is, there is a problem of storage or portability when not in use.

[0004]

The object of the present invention is to solve this problem of the conventional binoculars, to secure a correct eye point when using the naked eye regardless of diopter adjustment, and to provide an eyepiece for binoculars excellent in storage and portability. The purpose is to obtain a partial structure.

[0005]

SUMMARY OF THE INVENTION The eyepiece structure of the binoculars of the present invention is a binocular having a light-blocking eye surrounding the rear part of the eyepiece slidable in the optical axis direction at the rear of the eyepiece of the binocular. Frame: an eyepiece frame that is movable on the fixed frame in the optical axis direction and supported by restricting the rotation; and is provided on the outer circumference of the fixed frame so as to be adjustable in rotation. A diopter adjusting ring for moving in the optical axis direction; a light-shielding eye supported movably in the optical axis direction on the eyepiece frame; and a light-shielding eye provided between the eyepiece lens frame and the light-shielding eye. A click stop mechanism that locks at a position and maintains a constant distance from the rear end of the light-shielding eye to the eyepiece.

[0006] An eyepiece support ring fixed to the outer periphery of the fixed frame is fixedly provided on the eyepiece frame, and the diopter adjustment ring is located on the inner peripheral side of the eyepiece support ring. By providing a notch for rotating the diopter adjustment ring, careless rotation of the diopter adjustment ring can be prevented.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. 1 to 4 show an embodiment of the present invention.
An eyepiece frame 13 supporting an eyepiece 12 is slidably fitted on the inner periphery of the fixed frame 11 of the eyepiece section of the binoculars. At the rear end of the eyepiece frame 13, an eye support ring 15 located on the outer periphery of the fixed frame 11 is fixed by a set screw 15 a, and a light-shielding eye 16 is further slid on the outer periphery of the eye support ring 15. It is movably fitted. The light-shielding eyepiece 16 includes a metal or resin slide ring 17 directly in contact with the outer periphery of the eyepiece support ring 15 and an eyepiece body 18 made of a flexible material such as rubber.
It consists of

A straight guide groove 30 parallel to the optical axis is formed in the eye support ring 15, and a guide pin 31 fitted in the straight guide groove 30 is screwed and fixed to the slide ring 17 of the light shielding eye 16. Have been. The slidable eyepiece 16 slidable in this manner can be locked at the pulled-out position by a click stop mechanism. That is, a through hole 21 in the radial direction is formed in the eye support ring 15, and the click ball 22 is movably fitted in the through hole 21. The slide ring 17 is provided at the back with a click hole 23 into which the click ball 22 partially fits. The click ball 22 is biased by a leaf spring 24 in a direction in which the click ball 22 fits into the click hole 23. Have been. Although only one set of the above-described click stop mechanism is shown in the drawing, a plurality of sets may be provided at different circumferential positions.

On the other hand, a diopter adjustment ring 26 is rotatably fitted on the outer peripheral surface of the fixed frame 11 inside the eye support ring 15. The fixed frame 11 is provided with a rectilinear guide groove 27 parallel to the optical axis inside the diopter adjustment ring 26. The rectilinear guide groove 27 is
The guide pin 28 implanted in the is fitted. That is, the eyepiece frame 13 is provided with the linear guide groove 27 and the guide pin 28.
According to the relationship (1), it is possible to move a fixed distance in the optical axis direction while the rotation is restricted (restricted) with respect to the fixed frame 11.
The guide pin 28 further includes a lead groove 29 formed on the inner surface of the diopter adjustment ring 26 and inclined with respect to the circumferential direction.
When the diopter adjustment ring 26 is rotated,
Lead groove 29, straight guide groove 27, and guide pin 28
, The eyepiece frame 13 does not rotate,
The diopter is adjusted by moving straight in the optical axis direction.

A cutout 32 for rotating the diopter adjustment ring 26 is formed in the eye support ring 15. With a configuration in which the diopter adjustment ring 26 is rotated through the notch 32, careless adjustment of the diopter can be prevented. Since diopter adjustment is not an operation that is frequently performed, a configuration that prevents inadvertent rotation is preferable.

According to the present eyepiece structure, when the light-shielding eye 16 is stored in a case that is not used, the light-shielding eye 16 is pushed in so that there is no obstructive projection. Similarly, when the spectacle user uses the light, the light-shielding eye 16 is pushed in and used. Since the light-shielding eye 16 hits the eyeglasses, it is pushed in in a normal observation state, and there is no inconvenience in use.

On the other hand, when used with the naked eye, the light blocking eye 16 is pulled out, and the click hole 23 is used in a click stop state in which the click hole 23 is engaged with the click ball 22. The click stop position indicated by a solid line in FIG. 1 is a position where a correct eye point is secured when the observer's eye is brought into contact with the rear end of the light blocking eye 16.

The diopter adjustment can be performed by rotating the diopter adjustment ring 26 regardless of the position where the light blocking eye 16 is pulled out or pushed. When the diopter adjustment ring 26 is rotated, the eyepiece frame 13 is moved in the optical axis direction by the lead groove 29, the straight guide groove 27, and the guide pin 28, and the diopter is adjusted. Since the light-shielding eye 16 is supported by the eye support ring 15 fixed to the eyepiece frame 13, the eyepiece frame 13 is adjusted by the diopter adjustment.
It moves with the movement of. Therefore, even if the diopter adjustment is performed, the distance between the rear end of the light-shielding eye and the eyepiece does not change, and a correct eye point can be secured.

Even if the diopter is adjusted, the eyepiece frame 13
Does not rotate, so that the degree of freedom in setting the shape of the light shielding eye 16 can be obtained. According to this embodiment, the light-shielding eye 16 can be formed in a shape other than a cylindrical shape adapted to a human face. 5 and 6 show examples of the shape.

[0015]

According to the binocular eyepiece structure of the present invention,
The fixed frame of the binoculars supports the eyepiece frame so as to be movable in the optical axis direction and restrains the rotation, while a diopter adjusting ring is provided on the outer periphery of the fixed frame so as to be rotatable and the diopter adjustment ring is rotated. To move the eyepiece frame in the optical axis direction, furthermore, the eyepiece frame can be moved in the optical axis direction to support the light-shielding eyepiece, and between the eyepiece lens frame and the light-shielding eyepiece, Is locked at the pull-out position, and a click stop mechanism is provided to keep the distance from the rear end of the eyepiece to the eyepiece constant, so that even if the eyepiece frame moves due to diopter adjustment, the eyepiece and By keeping the distance to the rear end constant, a correct eye point can be obtained. When stored and carried, the light-shielding eye can be held at the pushed-in position, so that the overall size can be reduced and the storage and portability can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view taken along the line II of FIG. 3, showing an embodiment of an eyepiece structure of binoculars according to the present invention.

FIG. 2 is an overall front view of the binoculars of the present invention.

FIG. 3 is a plan view of the binoculars of the present invention.

FIG. 4 is a view on arrow V in FIG. 1;

FIG. 5 is a front view showing an example of a shape of a light-shielding target.

FIG. 6 is a plan view showing an example of the shape of a light-shielding target.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Fixed frame 12 Eyepiece 13 Eyepiece frame 15 Eye support ring 16 Light blocking eye 17 Slide ring 22 Click ball 23 Click hole 24 Leaf spring 26 Diopter adjustment ring 27 Straight guide groove 28 Guide pin 29 Lead groove 30 Straight guide groove 31 Guide pin

Claims (2)

(57) [Scope of request for utility model registration] 1. A binocular provided with a light-shielding eye surrounding a rear part of an eyepiece slidably in an optical axis direction at a rear part of an eyepiece part of the binoculars. An eyepiece lens frame movably supported with its rotation restricted; a diopter adjustment ring provided on the outer periphery of the fixed frame so as to be rotatable and capable of moving the eyepiece frame in the optical axis direction by the turning operation thereof; The light-shielding eye supported by the eyepiece frame so as to be movable in the optical axis direction; and the light-shielding eye provided between the eyepiece lens frame and the light-shielding eye is locked at a drawn-out position, and the light-shielding is performed. A click stop mechanism for maintaining a constant distance from the rear end of the eye to the eyepiece; 2. The eyepiece structure of binoculars according to claim 1, wherein an eyepiece support ring located on the outer periphery of the fixed frame is fixed to the eyepiece lens frame, and the diopter adjustment ring includes:
The eyepiece structure of the binoculars which is located on the inner peripheral side of the eye support ring and has a notch for rotating the diopter adjustment ring provided in the eye support ring.