JP2021179279A - Diopter adjusting mechanism for alignment scope - Google Patents

Abstract

To provide a diopter adjusting mechanism for an alignment scope which can accomplish both the increase in the movement amount of an eyepiece barrel and the fastening of the eyepiece barrel with a stopper.SOLUTION: A diopter adjusting mechanism 10a is for an alignment scope that has an eyepiece barrel 13 and a stopper 14 screw-coupled to the base end portion of a scope main body 11 so as to be able to move forward or backward and to abut therewith. A first male screw 11a and a second male screw 11b that have different screw thread pitches or number of threads from each other are formed on the base end portion of the scope main body so as to overlap with each other. A first female screw is formed on the eyepiece barrel. A second female screw is formed on the stopper. The first female screw of the eyepiece barrel is configured to be engaged with the first male screw of the scope main body but not to be engaged with the second male screw. The second female screw of the stopper is configured to be engaged with the second male screw of the scope main body, but not to be engaged with the first male screw. The first female screw and the first male screw are configured to have larger leads of the screw threads than those of the second female screw and the second male screw.SELECTED DRAWING: Figure 3

Description

The present invention relates to a diopter adjusting mechanism of a sighting scope used for firearms, competition shooting and other shooting competitions.

Traditionally, sighting scopes have been used for firearms and shooting competitions. This aiming scope is for aiming at firearms and shooting competitions, that is, for aiming, and has an objective lens, a condenser lens, an orthodox lens, and an eyepiece, and these objective lenses and the condenser are built-in. An erect image is formed in the scope body by a lens and an erect lens, and then this erect image is magnified by an eyepiece. In order for the user to clearly see the erect image, that is, in order for the user to focus on the erect image, it is necessary to determine the distance between the erect image and the eyepiece. There are individual differences depending on the eyesight of the user.

The mechanism that determines the distance between the erect image and the eyepiece is also called the diopter adjustment mechanism, and is roughly divided into two types. The first mechanism is to move the eyepiece with the built-in eyepiece forward and backward with respect to the scope body, and fix the eyepiece at the positioned position by the stopper. The second mechanism is that the eyepiece is provided in a double structure consisting of an inner cylinder and an outer cylinder, and an eyepiece is built in the inner cylinder, and this inner cylinder can be moved forward and backward with respect to the outer cylinder. It was done. This second mechanism is disclosed in, for example, Patent Document 1 and Patent Document 2.

For example, FIG. 4 describes the first mechanism described above. FIG. 4 is an enlarged cross-sectional view showing a part of the diopter adjustment mechanism of the conventional aiming scope. As shown in FIG. 4, in the conventional diopter adjustment mechanism 20a, the eyepiece tube 23 and the stopper 24 are arranged adjacent to the base end of the scope body 21 so as to be movable in the front-rear direction indicated by arrows P and Q. .. In this state, the female screw 23a of the eyepiece tube 23 and the female screw 24a of the stopper 24 are screw-coupled to the male screw 21a of the scope body 21, and the female screw 23a of the eyepiece tube 23, the female screw 24a of the stopper 24, and the male screw 21a of the scope body 21. Is configured to have the same thread pitch and number of threads. As a result, the position of the eyepiece tube 23 can be fixed by moving the eyepiece tube 23 forward and backward to position the eyepiece tube 23 and then bringing the stopper 24 into contact with the eyepiece tube 23.

Patent Document 1 and Patent Document 2 have an eyepiece having a double structure of an inner cylinder (eyepiece inner cylinder, eyepiece cylinder) and an outer cylinder (eyepiece outer cylinder, rotary cylinder), and have an inner cylinder. Has a built-in eyepiece, the inner cylinder and the outer cylinder are screw-coupled, and the aiming scope and rifle scope are configured to move the inner cylinder forward and backward with respect to the outer cylinder to position the inner cylinder. The diopter adjustment device and the diopter adjustment device are described respectively.

Jitsufuku No. 02-038248 Gazette Jitsukaisho 47-014150 Gazette

The second mechanism described above, such as Patent Document 1 and Patent Document 2, has a large amount of movement, that is, a so-called lead, in which the inner cylinder moves back and forth with respect to the outer cylinder when the inner cylinder or the outer cylinder is rotated once. Therefore, it is easy for the user to focus and position the inner cylinder. However, since the inner cylinder cannot be fixed to the outer cylinder, there is a problem that the inner cylinder is displaced due to the impact of shooting or the like, and the positioning of the inner cylinder must be repositioned each time the shooting is performed. Further, since the eyepiece has a double structure of an inner cylinder and an outer cylinder, the size of the eyepiece becomes large, and there is a problem that it becomes difficult to handle if a sighting scope equipped with this mechanism is attached to a firearm.

For this reason, the structure is simpler than the second mechanism, and the first mechanism that can position the eyepiece tube with a stopper is desirable, but the first mechanism has a relatively small lead of the thread of the eyepiece tube. There is a problem that it is difficult for the user to focus and it is difficult to position the eyepiece tube. To solve this problem, if the pitch of the thread is increased or the number of threads is increased to increase the amount of movement of the eyepiece, the spiral angle of the thread becomes steeper. Therefore, when the eyepiece is rotated with the stopper in contact with the eyepiece, the stopper also rotates with the stopper, which causes a problem that the position of the eyepiece cannot be fixed by the stopper.

Therefore, the present invention solves the above-mentioned problems, and the problem is that in the first mechanism, the sighting of an aiming scope capable of both increasing the amount of movement of the eyepiece tube and fixing the eyepiece tube with a stopper is possible. The purpose is to provide a degree adjustment mechanism.

In order to solve the above problems, the diopter adjustment mechanism of the sighting scope of the present invention is a sighting of the sighting scope in which the eyepiece tube and the stopper are screwed to the base end of the scope body so as to be able to move forward and backward and to be in contact with each other. It is a degree adjustment mechanism, and is formed so that a first male screw and a second male screw having different thread pitches or numbers of threads overlap each other at the base end portion of the scope body, and the eyepiece tube has a first male screw. A second female screw is formed on the stopper, and the first female screw of the eyepiece is screwed with the first male screw of the scope body and is screwed with the second male screw. The second female screw of the stopper is configured not to be screwed, and the second female screw of the stopper is screwed with the second male screw of the scope body and is configured not to be screwed with the first male screw. The first female screw and the first male screw of the scope body are configured to have a larger thread lead than the second female screw of the stopper and the second male screw of the scope body. It is characterized by.

According to the present invention, the diopter adjustment mechanism of the aiming scope is a diopter adjusting mechanism of the aiming scope in which the eyepiece tube and the stopper are screwed to the base end of the scope body so as to be able to move forward and backward and to be in contact with each other. At the base end of the scope body, a first male screw and a second male screw having different thread pitches or numbers of threads are formed so as to overlap each other, and a first female screw is formed on the eyepiece tube. A second female screw is formed on the stopper, and the first female screw of the eyepiece is screwed with the first male screw of the scope body so as not to be screwed with the second male screw. The second female screw of the stopper is screwed with the second male screw of the scope body and is not screwed with the first male screw, and the first female screw of the eyepiece tube is configured. The female screw of the eyepiece and the first male screw of the scope body are configured such that the lead of the thread is increased by the second female screw of the stopper and the second male screw of the scope body, so that the eyepiece is eyepieced. Since the amount of movement of the cylinder is larger than that of the stopper, the eyepiece can be easily positioned, and the eyepiece and the stopper have different thread pitches or number of threads, so that the eyepiece and the stopper are different from each other. The angle of the spiral of the thread with the stopper is different from each other, and even if the eyepiece is rotated with the stopper in contact with the eyepiece, the stopper does not rotate together, and the stopper causes the eyepiece to be connected. The position can be fixed.

In the present invention, only the first range formed so that both the first male screw and the second male screw overlap and only the second male screw are formed at the base end portion of the scope body. It is preferable that the second range is adjacent to the proximal end side and the distal end side.

According to the present invention, only the first range formed so that both the first male screw and the second male screw overlap and only the second male screw are formed at the base end portion of the scope body. By arranging the second range adjacent to the proximal end side and the distal end side, the first female screw of the eyepiece tube is screwed with the first male screw and is screwed with the second male screw. Since it is not screwed, the range of movement of the eyepiece can be limited to only the first range, and the second female screw of the stopper is screwed with the second male screw, so that the stopper can be used as the scope. It can be screwed from the end of the base end of the main body through the first range to the second range, and the stopper is moved from the second range to the first range to hit the eyepiece tube. Can be touched.

In the present invention, the base end portion of the stopper and the tip end portion of the eyepiece tube are configured to be in contact with each other, and a protrusion is provided on either one of the base end portion of the stopper and the tip end portion of the eyepiece tube. It is preferable that a recess is formed on the other side so as to be fitted with the protrusion.

According to the present invention, the base end portion of the stopper and the tip end portion of the eyepiece tube are configured to be in contact with each other, and project to either the base end portion of the stopper or the tip end portion of the eyepiece tube. Since the portion is formed and the concave portion that fits with the protruding portion is formed on the other side, when the base end portion of the stopper is brought into contact with the tip end portion of the eyepiece tube, the protruding portion and the concave portion are formed. Since the eyepieces are fitted, it is possible to prevent the eyepieces from being displaced in a direction intersecting the axial direction.

As described above, according to the present invention, it is possible to achieve an excellent effect that the amount of movement of the eyepiece tube can be increased and the eyepiece tube can be fixed by the stopper at the same time.

It is a schematic side view of the sighting scope of embodiment which concerns on this invention. It is an enlarged one-sided sectional view which shows the part surrounded by the two-dot chain line i of FIG. It is an enlarged view which shows the part surrounded by the two-dot chain line ii of FIG. It is an enlarged sectional view which shows a part of the diopter adjustment mechanism of a conventional aiming scope.

Hereinafter, the diopter adjustment mechanism of the aiming scope according to the embodiment of the present invention will be described in detail. FIG. 1 is a schematic side view of an aiming scope according to an embodiment of the present invention. FIG. 2 is an enlarged one-sided cross-sectional view showing a portion surrounded by the alternate long and short dash line i in FIG. As shown in FIGS. 1 and 2, the aiming scope 10 is, for example, a rifle scope, and has a scope body 11, an objective cylinder 12, and an eyepiece cylinder 13.

In the figure, the direction indicated by the arrow P is the tip side (the left side of the paper surface in FIGS. 1 to 4), and the direction indicated by the arrow Q is the base end side (the right side of the paper surface in FIGS. 1 to 4). The direction indicated by the arrow P and the arrow Q is the front-back direction. These directions indicate relative positional relationships, not absolute positional relationships with respect to the direction of gravity. The front-back direction indicated by the arrow P and the arrow Q coincides with the direction along the axis O of the aiming scope 10.

The scope body 11, the objective tube 12, and the eyepiece tube 13 are cylindrical. The scope body 11 contains a condenser lens A and upright lenses B1 and B2, an objective lens C is built in the objective tube 12, and eyepiece lenses D1 and D2 are built in the eyepiece tube 13. Further, a well-known zoom ring 15 is provided on the base end side of the scope main body 11.

The objective cylinder 12 is attached to the tip end side indicated by the arrow P of the scope main body 11, and the eyepiece cylinder 13 is attached to the proximal end side indicated by the arrow Q of the scope main body 11. Therefore, the objective cylinder 12, the scope main body 11, and the eyepiece cylinder 13 are sequentially connected from the distal end side to the proximal end side.

At this time, the stopper 14 is arranged between the scope body 11 and the eyepiece tube 13. The stopper 14 has an annular shape and is for fixing the position of the eyepiece tube 13. The diopter adjusting mechanism 10a of the aiming scope 10 is composed of a base end portion of the scope body 10, an eyepiece tube 13, and a stopper 14.

FIG. 3 is an enlarged view showing a portion surrounded by the alternate long and short dash line ii in FIG. As shown in FIG. 3, more specifically, the first male screw 11a and the second male screw 11b are formed so as to overlap each other on the outer periphery of the base end portion of the scope main body 11. The first male screw 11a and the second male screw 11b extend from the end edge of the base end portion of the scope body 11 to the tip end side indicated by the arrow P, respectively.

A first female screw 13a is formed on the inner circumference of the eyepiece tube 13, and a second female screw 14a is formed on the inner circumference of the stopper 14. The first female screw 13a of the eyepiece tube 13 is configured to be screwed (meshed) with the first male screw 11a of the scope body 11, and is configured not to be screwed with the second male screw 11b of the scope body 11. ing. The second female screw 14a of the stopper 14 is configured to be screwed with the second male screw 11b of the scope body 11, and is configured not to be screwed with the first male screw 11a of the scope body 11.

The stopper 14 and the eyepiece tube 13 are sequentially screwed into the base end portion of the scope main body 11, and the stopper 14 and the eyepiece tube 13 are arranged adjacent to the tip end side and the base end side. In this state, the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11 are screw-coupled, and the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11 Is screw-coupled. As a result, the eyepiece cylinder 13 and the stopper 14 can be moved (advanced and retreated) in the front-rear direction along the axis O with respect to the scope main body 11 by rotating each of them.

In this case, the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11 and the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11 have a thread pitch. (Pitch) are different from each other. Specifically, the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11 have a larger thread pitch than the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11. It is formed. As a result, the eyepiece tube 13 has a larger thread lead than the stopper 14, and the amount of movement in the front-rear direction becomes larger.

Further, the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11 have a larger thread pitch than the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11. The angle of the spiral of the thread is steep. In other words, the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11 are formed to have a smaller thread pitch than the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11. The angle of the spiral of the thread is loosened. Therefore, the angle of the spiral of the screw thread is different between the stopper 14 and the eyepiece tube 13. As a result, when the stopper 14 is brought into contact with the eyepiece tube 13, the eyepiece tube 13 can be fixed by the stopper 14 without the stopper 14 rotating together even if the eyepiece tube 13 rotates.

Here, the eyepiece tube 13 and the stopper 14 may have different thread threads, not the thread pitch. Specifically, the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11 and the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11 are threaded threads. The numbers are different from each other. That is, the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11 are configured to have a larger number of threads than the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11. There is. As a result, the eyepiece tube 13 has a larger thread lead than the stopper 14, and the amount of movement in the front-rear direction becomes larger.

Further, the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11 are configured to have a larger number of threads than the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11. The angle of the spiral of the screw thread is steep. In other words, the second female screw 14a of the stopper 14 and the second male screw 11b of the scope body 11 are configured to have fewer threads than the first female screw 13a of the eyepiece tube 13 and the first male screw 11a of the scope body 11. The angle of the spiral of the thread is loosened. Therefore, the angle of the spiral of the screw thread is different between the stopper 14 and the eyepiece tube 13. As a result, when the stopper 14 is brought into contact with the eyepiece tube 13, the eyepiece tube 13 can be fixed by the stopper 14 without the stopper 14 rotating together even if the eyepiece tube 13 rotates.

As shown in FIG. 3, at the base end portion of the scope main body 11, the second male screw 11b extends toward the tip end side as compared with the first male screw 11a. That is, at the base end of the scope body 11, the first range S1 in which both the first male screw 11a and the second male screw 11b are formed and the second range S1 in which only the second male screw 11b is formed are formed. S2 is provided. The first range S1 and the second range S2 are arranged adjacent to each other on the proximal end side and the distal end side. Thereby, the movement range of the eyepiece tube 13 can be limited to the range of the first range S. Further, the stopper 14 can be arranged from the edge of the base end portion of the scope body 11 to the second range S2 through the first range S1, and the stopper 14 can be arranged within the range from the second range S2 to the first range S1. You can move.

Further, at the base end portion of the scope main body 11, the stopper 14 and the eyepiece tube 13 are arranged adjacent to the tip end side and the base end side, respectively, and are configured to be movable in the front-rear direction along the axis O of the aiming scope 10. Has been done. Therefore, the base end portion 14q of the stopper 14 and the tip end portion 13p of the eyepiece tube 13 are configured to be in contact with each other. As a result, when the stopper 14 is brought into contact with the eyepiece tube 13 to fix the position of the eyepiece tube 13, the stopper 14 is arranged on the tip side of the eyepiece tube 13, and the stopper 14 allows the eyepiece tube 13 to move toward the tip side. Since it is prevented, it is possible to prevent the distance between the orthodox image and the eyepiece from being reduced.

Specifically, a protrusion 14t is formed at the base end portion 14q of the stopper 14, and a recess 13r is formed at the tip end portion 13p of the eyepiece tube 13. These protrusions 14t and recesses 13r are configured to be matable. When the base end portion 14q of the stopper 14 is brought into contact with the tip end portion 13p of the eyepiece tube 13, the protruding portion 14t and the concave portion 13r are fitted. That is, the tip surface of the protruding portion 14t abuts on the inner bottom surface of the recess 13r, and the outer periphery of the protruding portion 14t abuts on the inner circumference of the recess 13r. This makes it possible to prevent the eyepiece tube 13 from being displaced in the direction intersecting the axis O of the aiming scope 10.

In the aiming scope 10 configured as described above, the eyepiece tube 13 is moved forward and backward with respect to the main body scope 11 for positioning, and then the stopper 14 is brought into contact with the eyepiece tube 13 to fix the position of the eyepiece tube 13. And use it.

In the present embodiment, the base end of the scope body 11 is formed so that the first male screw 11a and the second male screw 11b overlap each other, and the eyepiece tube 13 is formed with the first female screw 13a, and the stopper 14 is formed. A second female screw 14a is formed on the eyepiece, and the stopper 14 and the eyepiece tube 13 are sequentially screwed into the base end of the scope body 11, and the first male thread 11a of the scope body 11 and the first female thread of the eyepiece tube 13 are screwed in order. 13a is screw-coupled, the second male screw 11b of the scope body 11 and the second female screw 14a of the stopper 14 are screw-coupled, and the first male screw 11a and the first female screw 13a are second. Since the eyepiece tube 13 has a larger lead than the stopper 14, the eyepiece tube 13 can be easily positioned because the thread pitch is configured to be larger than that of the male thread 11b and the second female thread 14a. At the same time, since the eyepiece tube 13 and the stopper 14 have different thread spiral angles, the stopper 14 can be brought into contact with the eyepiece tube 13 to fix the position of the eyepiece tube 13.

Further, at the base end portion of the scope body 11, only the first range S1 in which both the first male screw 11a and the second male screw 11b are overlapped and the second male screw 11b are formed are formed. By arranging the range S2 adjacent to the proximal end side and the distal end side, the movement range of the eyepiece tube 13 can be limited to the first range S1, and the stopper 14 can be limited to the second range S2. The position of the eyepiece tube 13 can be fixed by the stopper 14 by moving from the first range to the first range S1.

It should be noted that the aiming scope 10 of the present embodiment is not limited to the above-mentioned illustrated example, and it is needless to say that various changes can be made without departing from the gist of the present invention. For example, in the present embodiment, only the first range S1 in which both the first male screw 11a and the second male screw 11b are overlapped and the second male screw 11b are formed at the base end portion of the scope main body 11. Although the second range S2 is provided, only the first range S1 may be provided at the base end portion of the scope main body 11.

Further, a protrusion 14t is formed at the base end portion 14q of the stopper 14, and a recess 13r that fits with the protrusion 14t is formed at the tip end portion 13p of the eyepiece tube 13, but a recess is formed at the base end portion 14q of the stopper 14. May be formed in the tip portion 13p of the eyepiece tube 13 to be fitted with a recess, and the base end portion 14q of the stopper 14 and the tip portion 13p of the eyepiece tube 13 are formed with a protrusion or a recess. It may be configured so as to be in surface contact with each other.

10 ... Aiming scope, 10a, 20a ... Diopter adjustment mechanism 11,21 ... Scope body, 11a ... First male screw, 11b ... Second male screw, 12 ... Objective cylinder, 13, 23 ... Eyepiece cylinder, 13a ... First 1 female screw, 13p ... tip, 13r ... concave, 14, 24 ... stopper, 14a ... second female screw, 14q ... base end, 14t ... protruding part, 15 ... zoom ring, 21a ... male screw, 23a, 24a ... Female screw, A ... Condensing lens, B1, B2 ... Upright lens, C ... Objective lens, D1, D2 ... Eyepiece, O ... Axis line, P, Q ... Arrow, S1 ... First range, S2 ... Second Range, i, ii ... Two-point chain line

Claims (3)

It is a diopter adjustment mechanism of the sighting scope in which the eyepiece and the stopper are screwed to the base end of the scope body so that they can move forward and backward and come into contact with each other.
The base end of the scope body is formed so that a first male screw and a second male screw having different thread pitches or number of threads overlap each other.
A first female screw is formed on the eyepiece tube, and a first female screw is formed.
A second female screw is formed on the stopper.
The first female screw of the eyepiece tube is configured to be screwed with the first male screw of the scope body and not screwed with the second male screw.
The second female screw of the stopper is configured to be screwed with the second male screw of the scope body and not to be screwed with the first male screw.
The first female screw of the eyepiece and the first male screw of the scope body are configured so that the lead of the thread is larger than that of the second female screw of the stopper and the second male screw of the scope body. The diopter adjustment mechanism of the aiming scope, which is characterized by the fact that it is. At the base end of the scope body, a first range formed so that both the first male screw and the second male screw overlap, and a second range formed so that only the second male screw is formed. The diopter adjusting mechanism for an aiming scope according to claim 1, wherein the range is adjacent to the proximal end side and the distal end side. The base end portion of the stopper and the tip end portion of the eyepiece tube are configured to be in contact with each other, and a protrusion is formed on either the base end portion of the stopper or the tip end portion of the eyepiece tube, and the other. The diopter adjusting mechanism for an eyepiece scope according to claim 1 or 2, wherein a recess that fits with the protrusion is formed in the eyepiece.

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