JPS6230002Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a water-sealed binocular that can be used in the rain or in places with high humidity, that is, in bad environments, or on boats, yachts, or other places on the water that are easily exposed to waves and spray. Conventional binoculars were limited to IF focus type binoculars, in which focus was adjusted by rotating the left and right eyepieces individually, but the focus adjustment operation is as easy as in general binoculars (binoculars that are not water-sealed). .

This invention relates to a focus adjustment mechanism for binoculars with a center focus mechanism (a system in which focus is adjusted by raising and lowering left and right focus adjustment members at the same time using a lever or wheel, etc.) with a water seal.

In other words, in the case of a center focus type, one end of an operating rod is attached to the focus adjusting member, which raises and lowers the focusing member by operating an adjustment knob (wheel or lever), so the distance traveled by the operating rod is fixed. A slit corresponding to 1 is formed in the outer wall of the lens barrel.

Therefore, it is considered extremely difficult to seal the slit portion, that is, to make the objective lens or eyepiece lens waterproof.

The technical problem of the present invention is to water-seal center focus binoculars, and to form a water-seal function between the adjustment knob and the focus adjustment member without damaging the appearance.
By forming the water seal function,
The objective is to prevent rainwater from entering the focus adjusting member and to protect the objective lens or eyepiece lens.

The technical means or structure for solving the above technical problem is to slidably fit the focus adjustment members 43 and 64 into the left and right lens barrels 10 and 11, and the raising and lowering of the focus adjustment members is the actuation of the focus adjustment knob 24. In the waterproof center focus binoculars according to the invention, an elevating arm 27 that is raised or lowered by the operation of the focus adjustment knob 24 and an elevating lever 33 that is linked to the elevating and lowering of the elevating arm are fitted into the elevating arm 27,
The other of the lifting levers 33 is connected to the focusing member 43.
A lever support seat 39 that supports the lifting lever 33 at the intermediate portion thereof is fixed to the movable connecting member 67, and is installed between the lifting lever 33 and the lever support seat 39 via the packing 46. The focus adjustment mechanism of binoculars is composed of a presser member 44, that is, a lever is applied.

The effects achieved by the above technical configuration are as follows.

In other words, each of the objective or eyepiece lifting levers is a rod-shaped body, and the left and right connecting members and the center fulcrum form a spherical shape, and because the center fulcrum is larger than the left and right connecting members, it comes into line contact with the lever support seat, which reduces frictional resistance. becomes smaller and smoother, so when the adjustment knob (wheel or lever) is rotated, the elevating arm will rise together with either the objective elevating lever or the eyepiece elevating lever, and the other will smoothly descend together with the objective tube. I can urge you.

Next, an embodiment of the present invention will be described based on FIG.

Reference numerals 10 and 11 denote left and right lens barrels, with eyepiece sides 12 and 13 at the top, objective lens sides 14 and 15 at the bottom, and a focus adjustment device between the two lens barrels.

The focus adjustment device includes a movable connecting member 17 and a fixed connecting member 1 that are integrally formed with the left and right lens barrels 10 and 11.
It is incorporated between 8.

Reference numeral 19 denotes a central cylinder having a flange 22 and a female thread (right-hand thread) formed at one end, and the central cylinder 19 is fitted from above into through holes 20 and 21 formed above and below the movable connecting member 17 After that, the other end is fixed with a fastening member 23, and the flange 22 is fixed with a screw or the like to the connecting member 17 side.

16 is a slit formed in the central shaft cylinder 19;
The head of the stopper 48 slides into the slit 16, and the threaded portion is screwed and fixed to the lifting shaft 26.
The lifting and lowering of the lifting shaft 26 is restricted.

Reference numeral 24 denotes a focus adjustment knob, and the adjustment knob 24 is integrally formed with a hollow threaded member 25 having a male thread (right-hand thread) on the outer periphery and a female thread (left-hand thread) on the inner periphery. The member 25 is screwed into the center shaft cylinder 19.

Reference numeral 26 denotes a lifting shaft having male threads formed at the upper and lower parts, and a male thread 72 at the lower part of the lifting shaft 26.
A non-threaded portion 74 is integrally formed between the male threads 73 of the slightly thin central shaft which are screwed into the female threads of the hollow threaded member 25 of the adjustment knob 24 and then into the female threads formed on the diopter adjustment knob 49. It is formed as follows.

The fixed side elevating arm 27 of the lens barrel 11 is fixed to the non-threaded portion 74 via a screw 29, and the movable side elevating arm 27 is fixed to the lower stepped portion 50 of the diopter adjustment knob 49 via a stop ring 60. Ru.

These left and right lifting arms 27 and 27' have left and right slits 31 and 32 formed so as to be located on the same horizontal line, and the slit 31, that is, the movable connecting member side, forms a more circular arc than the left slit 32. It is also deeply formed.

Reference numeral 61 denotes a detent/guide pin, the upper part of which is fitted into the through hole 71 of the ring 62 of the movable lifting arm 27, and the lower part is fitted and fixed into the flange 63 of the fixed lifting arm 27. has been done.

Reference numeral 33 denotes an eyepiece lifting lever made of a stainless steel material such as stainless steel.The lifting lever 33 has a sphere 34 approximately in the center, and connecting members 35 and 36 smaller than the sphere 34 on the left and right sides are connected to rod-shaped bodies 37 and 36. 38.

Reference numeral 39 denotes a cylindrical lever bearing seat; a male thread is formed on the outer periphery of the screw bearing seat 39; a truncated conical shape 40 is formed in the inner lower part;
Step portions 41 and 42 having different diameters are formed in the upper part of 0.

The larger step portion 4 of the step portions 41 and 42 having different diameters
2 is formed to be somewhat smaller than the diameter of the central sphere 34.

The diameter of the opening end of the truncated conical shape 40 is equal to or slightly larger than the vertical movement distance of one of the focusing members, that is, the eyepiece tube 64, which will be described later.

Reference numeral 44 denotes a holding member having a substantially U-shaped cross section, and has a female thread formed on its annular inner wall to be screwed into the male thread of the screw bearing seat 39, and a through hole 45 in the bottom wall that is slightly larger than the vertical distance of the rod-shaped body 38. is formed.

Reference numeral 46 denotes a packing whose inner diameter is equal to or slightly smaller than the diameter of the rod-shaped body 38, and whose outer diameter is slightly larger than the upper opening end of the screw support seat 39.

Reference numeral 65 designates an interpupillary distance scale ring, 66 a rubber cover, 67 a movable connecting member on the eyepiece side, 68 a fixed connecting member on the eyepiece side, 69 an eyepiece lens, and 70 an objective lens.

Regarding the operation: First, when the diopter adjustment knob 49 is rotated clockwise, the diopter adjustment knob 49 begins to rise while being guided by the male screw 73 of the central shaft and comes into sliding contact with the detent and guide pin 61, and at the same time it becomes movable. The side lifting arm 27 is raised together to perform proper diopter adjustment. Next, when the focus adjustment knob 24 is rotated clockwise, the lift shaft 26 screwed into the focus adjustment knob 24 slides in the slit 16 via the stopper 48 and rises, causing the lift arms 27, 27' will rise together.

As the elevating arms 27, 27' rise, the left and right eyepiece elevating levers 33, 33 move toward the central spheres 34, 34.
The left and right connecting members 35 are pushed up using the point as a fulcrum.

As a result, the left and right connecting members 35 lower the eyepiece tubes 64 and adjust the focus.

When the focus adjustment knob is operated in the opposite direction, the elevating arm starts descending and pushes up the left and right connecting members 35. As a result, the left and right connecting members 35, 35
The eyepiece tubes 64 are raised to adjust the focus. In other words, the diopter adjustment mechanism of the eyepiece and the focus adjustment mechanism of the eyepiece can be operated using a common lifting lever, and at the same time, they are water-sealed to prevent rainwater from entering the lens barrel. In other words, it is possible to prevent the light from entering the eyepiece side.

FIG. 3 is an overall cross-sectional view of main parts showing another embodiment of the present invention. Since the general structure is the same as that of the embodiment described above, corresponding parts are given the same numbers and detailed explanations thereof will be repeated. Parts are omitted.

The embodiment shown in Fig. 3 differs from the previous embodiment in that the diopter is adjusted using a diopter adjustment ring on the eyepiece side, and there is a water seal on the objective lifting lever that raises and lowers only the objective lens side. .

In FIG. 3, a central shaft cylinder 19 having a flange 22 at one end is inserted into the movable connecting member 17 from below, and then fixed to the other end with a fastening member 23.

Reference numeral 26 is an elevating shaft having a male thread formed in its lower half, and the male thread of the elevating shaft 26 is connected to the hollow threaded member 2.
5, and then the holding member 28 of the lifting arm 27 is fixed to the non-threaded portion via a screw 29.

The lifting arm 27 made of a light alloy such as a die-cast alloy is connected to the holding member 28 and the semicircular ring member 30.
The ring member 30 has slits 3 on the left and right sides.
1.32 is formed.

The slit 31, that is, the movable connecting member side is formed deeper than the left slit 32.

Reference numeral 33 denotes an objective lifting lever made of a stainless steel material such as stainless steel.The lifting lever 33 has a sphere 34 approximately in the center, and connecting members 35 and 36 smaller than the sphere 34 on the left and right sides are connected to rod-shaped bodies 37 and 36. 38.

Reference numeral 39 denotes a cylindrical lever bearing seat; a male thread is formed on the outer periphery of the screw bearing seat 39; a truncated conical shape 40 is formed in the inner lower part;
Step portions 41 and 42 having different diameters are formed in the upper part of 0.

Among the stepped portions 41 and 42 having different diameters, the diameter of the larger stepped portion 42 is approximately equal to the diameter of the central sphere 34, and the diameter of the smaller stepped portion 41 is formed to be somewhat smaller than the diameter of the central sphere 34.

The diameter of the opening end of the truncated conical shape 40 is equal to or slightly larger than the vertical movement distance of one of the focusing members, that is, the objective cylinder 43, which will be described later.

Reference numeral 44 denotes a holding member having an abbreviated cross-sectional shape, and has a female thread formed on its annular inner wall to be screwed into the male thread of the screw bearing seat 39, and a through hole 45 slightly larger than the vertical distance of the rod-shaped body 38 in the bottom wall. It is formed.

Reference numeral 46 denotes a packing whose inner diameter is equal to or slightly smaller than the diameter of the rod-shaped body 38, and whose outer diameter is slightly larger than the upper opening end of the screw support seat 39.

47 is packing on the objective lens side.

Regarding the action, when the focus adjustment knob 24 is rotated clockwise,
When the holding member 28 slides into the slit 16 and rises, and the elevating arms 27 rise together, the left and right objective elevating levers 3, which are on substantially the same horizontal line,
3 and 33 push down the left and right connecting members 35 and 35 using the central spheres 34 and 34 as fulcrums.

As a result, the left and right connecting members 35, 35 lower the objective tubes 43, 43 to adjust the focus.

In the opposite direction, when the elevating arm is lowered by operating the focus adjustment knob, the left and right connecting members 35 are pushed up.

As a result, the left and right connecting members 35, 35 raise the objective tubes 43, 43 to adjust the focus.

In addition, since the outside of the central sphere 34 of the objective lifting lever 33 is sealed with packing 46, there is no possibility that rainwater or the like will infiltrate into the objective body.
Sufficient for long-term use.

[Brief explanation of the drawing]

Fig. 1 is an overall vertical cross-sectional view of the main parts of the waterproof binoculars of the invention, Fig. 2 is an exploded perspective view of the main parts of the waterproof binoculars of the invention, and Fig. 3 is a sectional view showing another embodiment of the waterproof binoculars of the invention. Figure 4 is a sectional view taken along line A-A in Figure 3, and Figure 5.
The figure is a perspective view of the elevating arm and the objective elevating lever, and FIG. 6 is an exploded perspective view of fixing the elevating arm to the elevating shaft. 10/11: Lens barrel, 24: Focus adjustment knob, 2
6: central axis, 27: lifting arm, 33: objective lifting lever, 39: lever support seat, 43: objective tube, 46: packing, 64: eyepiece tube.

Claims (1)

[Scope of claims for utility model registration] (1) A focus adjustment member 4 is provided in the left and right lens barrels 10 and 11.
3 and 64 are slidably inserted into the waterproof center focus binoculars, and the lifting arm 27 is raised or lowered by the operation of the focus adjustment knob 24. , one of the lifting levers 33 linked to the lifting and lowering of the lifting arm is fitted into the lifting arm 27, the other of the lifting levers 33 is fitted into the focus adjustment members 43 and 46, and the lifting lever is inserted in the middle part thereof. 33 is fixed to a movable connecting member 67, and a pressing member 44 is installed between the lifting lever 33 and the lever bearing seat 39 via a packing 46. Focus adjustment mechanism for water-sealed center focus binoculars. (2) The water seal according to claim 1 of the utility model registration, wherein the lifting lever has a sphere in the center, and connection members of spheres smaller than the sphere on the left and right are integrally formed via rod-shaped bodies. Binoculars with a center focus mechanism. (3) Binoculars with a water-sealed center focus mechanism according to claim 1 of the utility model registration, wherein the lifting arm has a slit formed on one side or on the left and right sides to fit into one end of the lifting lever.