Optical sight

Abstract

To realize a zero stop function with a simple mechanism in an optical sight employing an adjustment mechanism in which a dial itself does not move up and down.SOLUTION: An optical sight comprises an optical system including a lens holder barrel housing a lens group, a housing for accommodating the optical system, and an impact point adjustment unit with an adjustment mechanism that changes the inclination of the lens holder barrel by rotating a dial to raise and lower a shaft inserted into the housing without moving the dial up and down. The impact point adjustment unit further comprises a first ring that rotates integrally with the dial and a second ring disposed between the first ring and the housing. The first ring is connected to the adjustment mechanism via the dial in a zero stop state in which it can rotate only in a first rotation direction. The zero stop state is formed by a first pin protruding from the second ring preventing the first protrusion from moving in a second rotation direction, and the first pin retracts from the second ring after the first ring starts to rotate before the first protrusion reaches the position of the first pin.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an optical sight equipped with a hunting gun or a sports gun.

Background Art

[0002] Conventionally, in an optical sight equipped with a hunting gun or a sports gun, a configuration provided with an aiming point adjustment mechanism called a turret is known (see, for example, Patent Document 1).

[0003] Some turrets have a zero stop function. The zero stop function is a function that makes it possible to rotate the dial in one rotation direction while making it impossible to rotate in the other rotation direction, that is, the reverse rotation direction, starting from the rotation state of the dial in the adjustment mechanism in which zeroing adjustment has been made for a certain aiming point. Thereby, even after adjusting the aiming point by rotating the dial in one rotation direction, it is possible to easily return to the rotation position where zeroing adjustment was made by rotating it all the way in the reverse rotation direction.

[0004] The structure of the turret is roughly divided into two types. One is a type in which the dial moves up and down when the dial is rotated, and the other is a type in which the internal parts move up and down without the dial itself moving up and down when the dial is rotated. In the latter type, since the height of the turret can be kept low because the dial itself does not move up and down, demand is increasing in the recent market where compact products are preferred.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Conventionally, in an adjustment mechanism where the dial itself does not move up and down, a configuration for realizing a zero-stop function with a simple mechanism has not been clear.

[0007] An object of the present invention is to provide an optical sight that employs an adjustment mechanism in which the dial itself does not move up and down, and in which the zero-stop function is configured with a simple mechanism.

Means for Solving the Problems

[0008] The optical sight of the present invention is an optical sight that allows a user to visually recognize a target, and includes an optical system, a housing, and an impact point adjustment unit. The optical system includes a lens holding cylinder in which a lens group is housed. The housing houses the optical system. The impact point adjustment unit includes an adjustment mechanism, a first ring, and a second ring. The adjustment mechanism is provided on the housing, and by rotating the dial by the user, the inclination of the lens holding cylinder is changed without moving the dial up and down. The first ring is connected to the dial and rotates integrally. The second ring is provided between the first ring and the housing. The first ring includes a first protrusion that protrudes toward the second ring, and is connected to the adjustment mechanism via the dial in a zero-stop state that is rotatable only in a first rotation direction. The zero-stop state is formed in such a manner that the progress of the first protrusion in a second rotation direction, which is the rotation direction opposite to the first rotation direction, is blocked by a first pin that protrudes from the second ring toward the first ring. The first pin retracts from the second ring before the first protrusion reaches the position of the first pin after the start of rotation of the first ring in the first rotation direction.

[0009] The impact point adjustment unit of the optical sight of the present invention may further include a rotation index providing mechanism that enables recognition of which rotation of the dial based on a change in the rotational direction position of the second ring before and after the interlocking rotation by rotating the second ring in a certain range in conjunction with the first ring when shifting from the first rotation to the second rotation of the first ring in the first rotation direction.

[0010] The optical sight of the present invention further includes a follower that exists between the first ring and the second ring and is pressed against the second ring from the first ring side. The second ring has a connecting and holding portion, which is a recess, on a first surface that is a surface facing the first ring, and has a rotation limiting groove extending with a certain length on a second surface that is a surface facing the housing. Further, it may have a first through hole that is a hole penetrating the first surface and the second surface. Also, the first pin exists between the second ring and the housing and is pressurized from the second ring side toward the housing side. The housing may have a second protrusion and a pin control protrusion that protrude toward the second ring. And the zero stop state may be formed in such a manner that the first pin is pushed up by the pin control protrusion, passes through the first through hole, and protrudes into an annular first track on the first surface that the first protrusion follows as the first ring 120 rotates, and the progress of the first protrusion in the second rotation direction is blocked. Also, for the rotation index providing mechanism, when the follower that follows the rotation of the dial and traverses the annular second track on the first surface makes one full rotation in the first rotation direction of the dial, it engages with the connecting and holding portion formed in the second track, so that the second ring starts to rotate in conjunction with the first ring. As a result, the position of the pin control protrusion with respect to the second ring moves, the pushing up of the first pin is released, and the first pin retracts from the first track, enabling the first protrusion to pass over the first through hole. Further, after the second protrusion engaged with the rotation limiting groove moves from one end of the rotation limiting groove and stops at the other end, when the first ring 120 is further rotated, the follower disengages from the connecting and holding portion, the interlock of the second ring is released, and the second rotation in the first rotation direction by the first ring is started. This may be realized by configuring it in such a way.

[0011] The optical sight of the present invention may further include a second pin that exists between the second ring and the housing and is pressurized from the second ring side toward the housing side, and a second through hole that is a hole penetrating the first surface and the second surface and is formed in the second ring. When the second ring starts rotating in the first rotation direction in conjunction with the first ring, the position of the second ring with respect to the pin control protrusion moves, the pushing up of the first pin is released, and then the second pin is pushed up. By protruding into the annular first track on the first surface that the first protrusion follows through the second through hole, the second rotation of the first ring in the first rotation direction may be configured to end when the progress of the first protrusion is blocked by the second pin.

[0012] The optical sight of the present invention may further include a first holding portion and a second holding portion, which are two depressions formed on the second surface of the second ring, and an anti-malfunction body provided between the second ring and the housing and pressed against the second ring from the housing side. When the second ring shifts from the first rotation to the second rotation in the first rotation direction of the first ring, the second ring rotates in the first rotation direction in conjunction with the first ring, so that the position of the second ring with respect to the anti-malfunction body moves, and the anti-malfunction body that was fitted into the first holding portion in the first rotation moves to the second holding portion and engages therewith.

[0013] In the optical sight of the present invention, the dial may be detachable and the mounting direction may be changeable, and by changing the mounting direction, the presence or absence of connection with the first ring may be changeable. At this time, the connection between the dial and the first ring may be realized by the engagement of a convex portion provided on one side with a concave portion provided on the other side, and the connection may be configured to be lost when the concave portion and the convex portion are no longer engaged due to the change in the mounting direction of the dial.

Advantages of the Invention

[0014] According to the present invention, in an optical sight employing an adjustment mechanism in which the dial itself does not move up and down, the zero stop function can be configured with a simple mechanism.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 8

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Figure 10

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Figure 12

Figure 13

Figure 14

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Figure 16

Figure 17

Figure 18

Figure 19

[0016] Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same members are denoted by the same reference numerals, and the description of the functional parts once described will be omitted as appropriate.

[0017] <First Embodiment> FIG. 1 is an external view of an optical sight 10 of the present invention. The optical sight 10 is a kind of optical device for allowing a user to visually recognize a target, and is used, for example, by being attached to a firearm such as a hunting gun or a sports gun. More specifically, for example, it is attached to a firearm for long-distance shooting (e.g., a rifle, etc.) to enlarge a target object such as a hunting prey or a target in the distance and allow the user to visually recognize it.

[0018] The optical sight 10 of the present invention includes an optical system 20, a housing 30, a focus adjustment unit 40, an illumination adjustment unit 50, a magnification adjustment unit 60, a diopter adjustment unit 70, and a landing point adjustment unit 100.

[0019] The optical system 20 is an optical system including a plurality of lenses such as an eyepiece lens and an objective lens. By directing the object side toward the front side of the firearm and the eyepiece side toward the rear side of the firearm, a user who is a shooter of the firearm can visually recognize a target such as a shooting target. A part of the lens group in the optical system 20 is housed in a lens holding cylinder 21 that can change its inclination.

[0020] The housing 30 is a housing that houses the optical system 20.

[0021] The focus adjustment unit 40 is a functional unit that adjusts the focus on the target. The illumination adjustment unit 50 is a functional unit that adjusts the lighting and brightness of the light-emitting reticle mounted on the optical sight 10. The magnification adjustment unit 60 is a functional unit that adjusts the magnification of the optical sight 10. The diopter adjustment unit 70 is a functional unit that adjusts the diopter for the light-emitting reticle. These functional units for performing these adjustments may adopt known configurations.

[0022] The impact point adjustment unit 100 is the turret in the present invention provided on the housing 30. FIG. 2 is a schematic cross-sectional view of the impact point adjustment unit 100. Further, FIG. 3 is an exploded view of the impact point adjustment unit 100, (a) is a perspective view from above, and (b) is a perspective view from below.

[0023] The impact point adjustment unit 100 includes an adjustment mechanism 110, a first ring 120, a second ring 130, a mechanism for forming a zero-stop state, and a rotation index providing mechanism.

[0024] The adjustment mechanism 110 is a component of a conventional turret and includes a dial 111, a shaft drive unit 112, and a fixing screw 113 that is a member for preventing the dial 111 from falling off. The adjustment mechanism 110 is a mechanism that moves the shaft 112b of the shaft drive unit 112 up and down without moving the dial 111 up and down when the user rotates the dial 111.

[0025] The dial 111 is a member for the user to perform a rotation operation. A cylindrical portion 111a that opens to the back side is formed on the back side of the dial 111, and a plurality of grooves in the height direction are continuously formed along the inner wall of the cylindrical portion 111a. Further, a notch 111b, which is a recess into which a connecting screw 120a described later is fitted, is formed below the outer periphery of the dial 111.

[0026] The shaft drive unit 112 includes a rotating ring 112a, a shaft 112b, a shaft base 112c, and a lock ring 112d for preventing the rotating ring 112a from floating or falling off.

[0027] The rotating ring 112a is a member that is connected to the dial 111 and rotates integrally therewith. The top of the rotating ring 112a is cylindrically exposed in a depression formed at the top of the shaft driving portion 112. Along the outer wall of the cylindrically exposed portion, grooves in the height direction are continuously formed. By covering the shaft driving portion 112 with the dial 111, the grooves formed in the inner wall of the cylindrical portion 111a of the dial 111 engage with the grooves formed in the outer wall of the rotating ring 112a. Thereby, the rotating ring 112a rotates in conjunction with the rotation of the dial 111.

[0028] The shaft 112b is a rod-shaped member having male threads partially formed on its surface, and is connected to the rotating ring 112a so as to be vertically movable and rotatable integrally with the rotating ring 112a.

[0029] The shaft base 112c is a member into which the shaft 112b is inserted, and is fixed to an opening provided in the housing 30. When the shaft 112b is inserted into the shaft base 112c, the tip portion is inserted into the housing 30 from the opening of the housing 30 and contacts the outer surface of the lens holding cylinder 21.

[0030] Female threads are formed in the cylindrical portion of the shaft base 112c into which the shaft 112b is inserted. The male threads of the shaft 112b inserted into this portion are engaged with the female threads. Since the shaft base 112c is fixed to the housing 30, when the shaft 112b (dial 111) is rotated, the shaft 112b moves up and down. Since the shaft 112b is connected to the rotating ring 112a so as to be vertically movable, the dial 111 does not move up and down even when the shaft 112b moves up and down.

[0031] When the shaft 112b is moved up and down, the pressing force of the shaft 112b on the lens holding cylinder 21 changes. On the opposite side of the shaft 112b across the lens holding cylinder 21, for example, as shown in FIG. 2, a leaf spring 22 is provided, and a repulsive force corresponding to the pressing force of the shaft 112b is applied to the lens holding cylinder 21 by the leaf spring 22. Therefore, by moving the shaft 112b up and down, the inclination of the lens holding cylinder 21 can be controlled, and the landing point can be adjusted.

[0032] Note that the configuration of the adjustment mechanism 110 described here is an example. As long as the user can change the inclination of the lens holding cylinder by rotating the dial without moving the dial up and down, other configurations may be adopted.

[0033] The first ring 120 is connected to the dial 111 and rotates integrally with the dial 111. For example, a connecting screw 120a, which is a convex portion, is provided on the outer periphery of the first ring 120. When the dial 111 is covered, the connecting screw 120a is fitted into a notch 111b provided below the outer periphery of the dial 111, thereby connecting the first ring 120 and the dial 111. As a result, when the dial 111 is rotated, the first ring 120 can also be rotated in the same rotation direction. Conversely, when the first ring 120 is in a zero-stop state where it can only rotate in the first rotation direction, which is one of the rotation directions, the dial 111 is also in a zero-stop state. Note that the same effect can also be obtained by providing the convex portion on the dial 111 and the concave portion on the first ring.

[0034] By indirectly connecting the adjustment mechanism 110 that has been zeroed for a certain landing point to the first ring 120 in a zero-stop state via the dial 111, starting from the rotation state (the movement state of the shaft 112b) in the adjustment mechanism 110 that has been zeroed, the dial 111 (the first ring 120) can be rotated in the first rotation direction, while a zero-stop function that prevents rotation in the second rotation direction, which is the reverse rotation direction, is realized. The mechanism for forming the zero-stop state will be described later.

[0035] The second ring 130 is provided between the first ring 120 and the housing 30.

[0036] The rotation index providing mechanism is a mechanism that enables the user to recognize the rotation index of how many rotations the first ring 120 (the dial 111) has made based on the change in the rotational position of the second ring 130 in the rotation direction before and after the interlocking rotation by interlocking and rotating the second ring 130 within a certain range when the first ring 120 makes one full rotation in the first rotation direction and moves to the second rotation.

[0037] The mechanism for forming the zero-stop state and the rotation index providing mechanism can be specifically realized in a compatible manner as follows, for example.

[0038] First, a first protrusion 121 protruding toward the second ring 130 is provided on the surface of the first ring 120 facing the second ring 130. The first protrusion 121 may be integrally formed with the first ring 120, or may be configured as a separate member such as a screw or a pin attached to the first ring 120 as shown in FIG. 3.

[0039] Also, for the second ring 130, a connecting and holding portion 131c, which is a recess, is provided on the first surface 131, which is the surface facing the first ring 120. A rotation limiting groove 132a extending with a certain length is provided on the second surface 132, which is the surface facing the housing 30 and is the back surface of the first surface 131. Further, a first through hole 130a, which is a hole penetrating the first surface 131 and the second surface 132, is provided.

[0040] Also, a follower 141 pressed against the first surface 131 of the second ring 130 from the first ring 120 side is provided between the first ring 120 and the second ring 130. As the follower 141, a sphere such as a steel ball, which can easily roll or slide smoothly on the first surface 131 of the second ring following the rotation of the first ring 120, is preferable. The pressing of the follower 141 from the first ring 120 side to the second ring 130 may be realized, for example, by inserting a spring 141a such as a compression coil spring between the first ring 120 and the follower 141. Specifically, for example, the follower 141 may be sandwiched between the other end of the spring 141a, one end of which is supported on the surface of the first ring 120 facing the second ring 130, and the first surface 131 of the second ring 130.

[0041] Further, a first pin 151 pressed from the second ring 130 side toward the housing 30 side is provided between the second ring 130 and the housing 30. The pressing from the second ring 130 side toward the housing 30 side may be realized, for example, by inserting a spring 151a between the second ring 130 and the first pin 151. Specifically, for example, a pin having a head is used as the first pin 151, and a compression coil spring is used as the spring 151a. Then, the shaft portion of the first pin 151 is inserted into the coil of the spring 151a from the other end of the spring 151a supported by the second surface 132 of the second ring 130, and is configured to be pressed against the head seating surface of the first pin 151 by the elastic force of the spring 151a.

[0042] Furthermore, on the surface of the housing 30 facing the second ring 130, a second protrusion 31 and a pin control protrusion 32 protruding toward the second ring 130 are provided. The second protrusion 31 may be integrally formed with the housing 30, or may be configured as a separate member such as a screw or a pin attached to the housing 30 as shown in FIG. 3. The pin control protrusion 32 is preferably a spherical protrusion that facilitates rolling or sliding of the head of the first pin 151. The spherical pin control protrusion 32 may be realized, for example, in a form in which a sphere is fitted into a recess provided in the housing 30. Further, in this case, a spring may be inserted between the housing 30 and the pin control protrusion 32. Thereby, the pin control protrusion 32 can be given cushioning properties, and an improvement in the rolling and sliding properties of the first pin 151 can be expected.

[0043] Under such a configuration, the zero stop state is formed in such a manner that the first pin 151 pushed up from the head by the pin control protrusion 32 passes through the first through hole 130a and protrudes into the annular first track 131a of the first surface 131 traced by the first protrusion 121 as the first ring 120 rotates, thereby preventing the first protrusion 121 from advancing in the second rotation direction.

[0044] Also, the rotation index providing mechanism is realized as follows.

[0045] First, a follower 141 that follows the rotation of the dial 111 and traces the annular second track 131b on the first surface 131 of the second ring 130 engages with a connection holding portion 131c formed in the second track 131b when the dial 111 makes one full rotation in the first rotation direction. As a result, the second ring 130 is connected to the first ring 120 and rotates in conjunction with the first ring 120.

[0046] When the rotation of the second ring 130 causes the position of the pin control projection 32 with respect to the second ring 130 to move, the pushing up of the first pin 151 by the pin control projection 32 is released, and the first pin 151 that protruded from the first through hole 130a for forming the zero stop state retracts. As a result, the first projection 121 can pass over the first through hole 130a. Further, when the second projection 31 engaged with the rotation limiting groove 132a moves from one end of the rotation limiting groove 132a and stops at the other end due to the rotation of the second ring 130, and then the first ring 120 is further rotated, the follower 141 disengages from the connection holding portion 131c and the connection with the second ring 130 is released, and the second rotation in the first rotation direction by the first ring 120 starts.

[0047] In this way, when shifting from the first rotation to the second rotation of the first ring 120, by rotating the second ring 130 in conjunction with the first ring 120 within a certain range, the change in the rotational position of the second ring 130 with respect to the reference position 30a of the housing 30 before and after the interlocking rotation of the second ring 130 can be provided as a rotation index.

[0048] With reference to FIGS. 4 to 8, it will be described how, when the dial 111 is rotated, the mechanism for forming the zero stop state and the rotation index providing mechanism, in which each component of the landing point adjusting unit 100 operates in relation to each other, are realized in a compatible manner. FIGS. 4 to 8 show the positional relationship of the components on the first surface 131 and the second surface 132 of the second ring 130 when the landing point adjusting unit 100 is viewed from above. In the following, the case where the first rotation direction is counterclockwise and the second rotation direction is clockwise will be described. However, even when the first rotation direction is clockwise and the second rotation direction is counterclockwise, a similar mechanism can be realized by inverting the arrangement of each component.

[0049] FIG. 4 shows a zero stop state in which the dial 111 cannot be rotated clockwise. In this state, there is a first pin 151 above the pin control projection 32, whereby the first pin 151 is pushed up from the head, and the shaft portion protrudes into the first track 131a through the first through hole 130a. Further, the first protrusion 121 is adjacent to the protruding first pin 151 in the counterclockwise direction and cannot proceed clockwise. Therefore, the dial 111 interlocked with the first ring 120 provided with the first protrusion 121 cannot be rotated clockwise.

[0050] At this time, the follower 141 is in the vicinity of the counterclockwise direction of the connection holding portion 131c, and the second protrusion 31 is at the counterclockwise end of the rotation limiting groove 132a.

[0051] Further, on the side surface of the second ring 130 at the positions respectively marked "1" and "2" in FIG. 4, rotation indexes in the form of characters or marks indicating the first rotation and the second rotation are displayed, and a reference position 30a for reading this rotation index is set on the housing 30. That is, a rotation index indicating the first rotation is displayed at the side surface position of the second ring 130 where the rotation index indicating the first rotation is read at the reference position 30a in the first rotation including the zero stop state, and a rotation index indicating the second rotation is displayed at the side surface position of the second ring 130 where the rotation index indicating the second rotation is read at the reference position 30a in the second rotation.

[0052] This method of providing the rotation index is just an example. As long as the user can recognize the rotation index indicating which rotation the rotation of the first ring 120 (dial 111) is based on the change in the position of the rotation direction of the second ring 130 before and after the interlocking rotation, other providing methods may be adopted.

[0053] As an example of the providing method, marks, symbols, etc. indicating the position in the rotation direction may be displayed on the side surface of the second ring 130, and a non-rotating part or member may be provided that surrounds the periphery of the second ring 130 and has a window or notch that allows a part of the side surface of the second ring 130 to be seen through.

[0054] Specifically, for example, a mark is displayed at one location on the side surface of the second ring 130, and in the member surrounding the periphery of the second ring 130, a first window is provided at the position where the mark exists at the first rotation of the first ring 120, and a second window is provided at the position where the mark whose position has moved due to the rotation of the second ring 130 exists at the second rotation. Thus, which window the mark is displayed in can be used as the rotation index. Also, for example, one window is provided in the member surrounding the periphery of the second ring 130, a first mark is displayed at the position on the side surface of the second ring 130 where a mark or the like can be seen through the window at the first rotation of the first ring 120, and a second mark is displayed at the position on the side surface of the second ring 130 where the mark can be seen through the window due to the rotation of the second ring 130 and the position has moved at the second rotation. Thus, which mark is displayed in the window can be used as the rotation index.

[0055] Also, as another example of the providing method, in the present invention, when the dial 111 is rotated once, since it is possible to recognize that the second ring 130 is rotating due to vision or the change in the weight of the rotation of the dial 111, this can be used as the rotation index.

[0056] Figure 5 shows a state where, starting from the zero-stop state shown in Figure 4, the dial 111 (and the first ring 120) is rotated counterclockwise by approximately one turn, and the first protrusion 121 reaches a position adjacent to the first pin 151 in the clockwise direction, and the follower 141 that rotates in conjunction with the first ring 120 reaches and engages with the connection holding portion 131c.

[0057] In the state shown in Figure 5, when the dial 111 is further rotated counterclockwise, as shown in Figure 6, the second ring 130 starts to rotate in conjunction with the dial 111. As the relative position between the second ring 130 and the housing 30 changes due to the rotation of the second ring 130, the second protrusion 31 moves from the counterclockwise end to the clockwise end of the rotation limiting groove 132a, and the first pin 151 moves from above the pin control protrusion 32, and the upward push by the pin control protrusion 32 is released, so that the first pin 151 retracts from the first track 131a due to the elastic force of the spring 151a. Also, due to the change in the rotational position of the second ring 130, the rotation index read at the reference position 30a also shifts from the first-round one to the second-round one.

[0058] As shown in Figure 7, when the second protrusion 31 reaches the clockwise end of the rotation limiting groove 132a and the upward push of the first pin 151 is released, the rotation index indicating the second rotation displayed on the second ring 130 reaches the rotational position read at the reference position 30a.

[0059] In the state shown in Figure 7, when the dial 111 (and the first ring 120) is further rotated counterclockwise, the arrival of the second protrusion 31 at the clockwise end of the rotation limiting groove 132a prevents the counterclockwise rotation of the second ring 130. As a result, the follower 141 disengages from the connection holding portion 131c and the interlocking of the second ring 130 ends. Therefore, hereafter, as shown in Figure 8, only the first ring 120 continues to rotate in conjunction with the dial 111.

[0060] Note that after rotating counterclockwise and then clockwise, the rotation position can be returned to the zero-adjusted position with an operation flow opposite to that in the case of counterclockwise rotation, and the zero-stop function can be activated.

[0061] With the simple configuration as described above, while realizing the zero-stop function, when shifting from the first rotation to the second rotation of the first ring 120, it is possible to avoid the first pin 151 protruding for forming the zero-stop state from becoming an obstacle to the shift to the second rotation. Also, by using the change in the rotational direction position of the second ring 130 with respect to the reference position 30a of the housing 30 before and after the interlocking rotation of the second ring 130 as a rotation index, the user can easily recognize which rotation the dial 111 is at.

[0062] <Second Embodiment> In the optical sight 10 of the first embodiment, the rotation of the first ring 120 in the first rotational direction is not hindered even after the third rotation. However, since the rotation index is provided only up to the second rotation, it is desirable that the first ring 120 cannot rotate in the first rotational direction when the second rotation is completed.

[0063] Therefore, a second pin 152 pressed from the second ring 130 side toward the housing 30 side may be provided between the second ring 130 and the housing 30, and a second through hole 130b, which is a hole penetrating the first surface 131 and the second surface 132, may be provided in the second ring 130. The pressurization from the second ring 130 side toward the housing 30 side may be realized, for example, by inserting a spring 152a between the second ring 130 and the second pin 152. Specifically, for example, a pin with a head is used as the second pin 152, and a compression coil spring is used as the spring 152a. Then, the shaft portion of the second pin 152 is inserted into the coil of the spring 152a from the other end of the spring 152a supported by the second surface 132 of the second ring 130 so as to be pressurized against the head seating surface of the second pin 152 by the elastic force of the spring 152a.

[0064] Then, with the start of the interlocking rotation of the second ring 130 with the first ring 120, the position of the pin control projection 32 with respect to the second ring 130 moves, releasing the pushing up of the first pin 151 and pushing up the second pin 152 from the head by the pin control projection 32 so that it protrudes into the first track 131a through the second through hole 130b. Thereby, the further advancement of the first protrusion 121 of the first ring 120 after the second rotation is blocked by the second pin 152, and thus the rotation of the first ring 120 can be limited to two rotations.

[0065] Under this configuration, how each component of the landing point adjustment unit 100 operates in relation to each other will be described with reference to FIGS. 9 to 13. The method of representing the figures is the same as that in FIGS. 4 to 8.

[0066] Regarding FIGS. 9 to 11, the configuration and operation described with reference to FIGS. 4 to 6 are the same, except that the second through hole 130b (and the second pin 152 and spring 152a behind it) is provided in the clockwise vicinity of the first through hole 130a (and the first pin 151 and spring 151a behind it).

[0067] As shown in FIG. 12, when the second protrusion 31 reaches the clockwise end of the rotation limiting groove, the pushing up of the first pin 151 is released, and the second pin 152 moves above the pin control projection 32 and is pushed up from the head by the pin control projection 32. At the timing when the shaft portion protrudes into the first track 131a through the second through hole 130b, the rotation index indicating the second rotation displayed on the second ring 130 reaches the rotation position that can be read at the reference position 30a.

[0068] In the state shown in FIG. 12, when the dial 111 (and the first ring 120) is further rotated counterclockwise, the second projection 31 reaches the clockwise end of the rotation limiting groove 132a, preventing the counterclockwise rotation of the second ring 130. As a result, the follower 141 disengages from the connection holding portion 131c and the interlocking of the second ring 130 ends. Therefore, hereafter, only the first ring 120 continues to rotate in conjunction with the dial 111. However, as shown in FIG. 13, when the first projection 121 reaches the position of the second pin 152, the subsequent movement is blocked by the second pin 152.

[0069] With the above configuration, after the end of the second rotation of the first ring 120 (dial 111) in the first rotation direction, further rotation in the first rotation direction is blocked.

[0070] <Third Embodiment> In the optical sights 10 of the first and second embodiments, although the rotation range of the second ring 130 is limited by the second projection 31 engaged with the rotation limiting groove 132a, it is in a freely rotatable state within that range, and malfunction may occur. If the second ring 130 malfunctions, there is a risk that the rotation index may not be provided correctly, or the position where the progress of the first projection 121 is blocked may become incorrect.

[0071] Therefore, in order to prevent such malfunction, the position of the second ring 130 in the rotational direction is maintained at a constant position at each of the first and second rotations of the first ring 120. Further, two depressions, i.e., a first holding portion 132b and a second holding portion 132c, are provided on the second surface 132 of the second ring 130, and a malfunction prevention body 153 pressed against the second surface 132 of the second ring 130 from the housing 30 side may be provided between the second ring 130 and the housing 30. As the malfunction prevention body 153, a sphere such as a steel ball that can smoothly roll or slide on the second surface 132 of the second ring 130 following the rotation of the second ring 130 is suitable. The pressing of the malfunction prevention body 153 from the housing 30 side against the second surface 132 of the second ring 130 may be realized, for example, by inserting a spring 153a such as a compression coil spring between the housing 30 and the malfunction prevention body 153. Specifically, for example, the malfunction prevention body 153 may be sandwiched between the other end of the spring 153a supported by the surface of the housing 30 facing the second ring 130 and the second surface 132 of the second ring 130.

[0072] When shifting from the first rotation to the second rotation of the first ring 120, the second ring 130 rotates in the first rotational direction in conjunction with the first ring 120, so that the position of the second ring 130 with respect to the malfunction prevention body 153 moves, and the malfunction prevention body 153 that was fitted into the first holding portion 132b at the first rotation is configured to be fitted into the second holding portion 132c.

[0073] Under this configuration, how each component of the landing point adjustment unit 100 operates in relation to each other will be described with reference to FIGS. 14 to 17. The method of representing the figures is the same as that of FIGS. 4 to 13.

[0074] FIG. 14 shows the zero-stop state. Regarding the configuration and operation, it is the same as that described for FIG. 4, but further, the first holding portion 132b and the second holding portion 132c are provided side by side in the clockwise direction, and the malfunction prevention body 153 is engaged with the first holding portion 132b, which is different. The engagement of the malfunction prevention body 153 with the first holding portion 132b is maintained through the first rotation, and malfunction during that period is prevented.

[0075] FIG. 15 shows a state in which the dial 111 (and the first ring 120) is rotated counterclockwise by approximately one rotation from the zero-stop state shown in FIG. 14. Except that the first holding portion 132b and the second holding portion 132c are provided and the malfunction prevention body 153 is engaged with the first holding portion 132b, the configuration and operation are the same as those described for FIG. 5.

[0076] In the state shown in FIG. 15, when the dial 111 is further rotated counterclockwise, as shown in FIG. 16, the second ring 130 starts to rotate in conjunction with the dial 111. As the relative position between the second ring 130 and the housing 30 changes due to the rotation of the second ring 130, the second projection 31 moves from the counterclockwise end of the rotation limiting groove 132a to the clockwise end, and the first pin 151 moves from above the pin control projection 32, and the upward push by the pin control projection 32 is released, so that the first pin 151 retracts from the first track 131a by the elastic force of the spring 151a. Further, due to the change in the rotational position of the second ring 130, the rotation index read at the reference position 30a also shifts from the first round to the second round. Furthermore, the malfunction prevention body 153 disengages from the first holding portion 132b and moves on the second surface 132 of the second ring 130 toward the second holding portion 132c.

[0077] As shown in FIG. 17, when the second projection 31 reaches the clockwise end of the rotation limiting groove 132a, the upward push of the first pin 151 is released and the second pin 152 is pushed upward and protrudes into the first track 131a, and the rotation index indicating the second rotation displayed on the second ring 130 reaches the rotation position read at the reference position 30a, the malfunction prevention body 153 engages with the second holding portion 132c.

[0078] In the state shown in FIG. 17, when the dial 111 (and the first ring 120) is further rotated counterclockwise, the interlocking of the second ring 130 ends and the second rotation starts. However, the engagement of the anti-malfunction body 153 with the second holding portion 132c is maintained throughout the second rotation, thereby preventing malfunction even in the second rotation.

[0079] With the above configuration, the position of the second ring 130 in the rotational direction is maintained at a constant position in each of the first and second rotations of the first ring 120, and the rotation index is correctly provided.

[0080] <Fourth Embodiment> The adjustment mechanism 110 is mounted on the optical sight 10 in the zero-stop state after zeroing adjustment. However, when it is desired to readjust zeroing after mounting, it is not always easy to simply remove the dial 111 and rotate the rotating ring 112a for adjustment. Also, since the rotation of the rotating ring 112a is restricted by the rotation restriction such as zero stop by the first ring 120, there is a possibility of hindering readjustment. On the other hand, if the entire adjustment mechanism 110 is removed, there is a possibility of problems occurring in the assembled state and adjustment state of the entire optical sight 10. The fourth embodiment is an embodiment that enables easy readjustment without removing the entire adjustment mechanism 110.

[0081] FIGS. 18 and 19 are exploded views of the adjustment mechanism 110 and the first ring 120 of the optical sight 10 according to the fourth embodiment. FIGS. 18(A) to (C) are perspective views from above, and the corresponding perspective views from below of FIGS. 18(A) to (C) are FIGS. 18(a) to (c). FIGS. 19(A) to (C) are also perspective views from above, and the corresponding perspective views from below of FIGS. 19(A) to (C) are FIGS. 19(a) to (c).

[0082] Figure 18 is a diagram showing the normal wearing state of the dial 111. The dial 111 is fixed by the fixing screw 113 shown in Figure 3 and is configured to be freely detachable by removing the fixing screw 113. As shown in Figures 18(A) and (a), a cylindrical portion 111a is formed on the back side of the dial 111. The cylinder is also open on the front side, so that the inner wall of the cylinder penetrates. A plurality of grooves in the height direction are continuously formed along the inner wall of the penetrated inner wall. By penetrating the inner wall, it becomes possible to wear the dial 111 inside out.

[0083] In the normal wearing state based on the exploded view shown in Figure 18, when the dial 111 rotates, the rotating ring 112a rotates in conjunction with the engagement of the grooves formed in the cylindrical portion 111a and the rotating ring 112a, and the first ring 120 rotates in conjunction with the fitting of the connecting screw 120a into the notch 111b. Also, in a state where the rotation of the first ring 120 is restricted, such as the zero stop state, the rotation of the dial 111 and the rotating ring 112a is also restricted.

[0084] On the other hand, Figure 19 is a diagram showing the wearing state of the dial 111 during zero-in readjustment. The dial 111 is worn inside out with respect to the normal wearing state.

[0085] In the state where the dial 111 is worn inside out based on the exploded view shown in Figure 19, the rotation of the rotating ring 112a in conjunction with the rotation of the dial 111 due to the engagement of the grooves formed in the cylindrical portion 111a and the rotating ring 112a is the same as in the normal wearing state. However, since the position of the notch 111b, which is a concave portion, moves upward due to the dial 111 being worn inside out, the connecting screw 120a of the first ring 120, which is a convex portion, does not fit into the notch 111b. Therefore, even if the dial 111 is rotated, the first ring 120 does not rotate in conjunction, and only the rotating ring 112a rotates. In other words, the rotation of the dial 111 and the rotating ring 112a is not hindered by the first ring 120. Note that the same effect can also be obtained by providing the convex portion on the dial 111 and the concave portion on the first ring.

[0086] In this way, by making the dial 111 detachable and allowing its mounting direction to be changed, during zeroing adjustment, the mounting direction of the dial 111 can be reversed, enabling the dial 111 to be easily rotated without removing the entire adjustment mechanism 110, and also avoiding the rotation restriction by the first ring. Therefore, the efficiency and accuracy of the zeroing adjustment work can be improved.

[0087] The present invention is not limited to the above-described embodiments. The above-described embodiments are examples, and any configuration that has substantially the same structure as the technical idea described in the claims of the present invention and exhibits the same operational effects is included in the technical scope of the present invention. That is, within the scope of the technical idea expressed in the present invention, appropriate changes can be made, and forms with such changes and improvements are also included in the technical scope of the present invention.

Explanation of Reference Numerals

[0088] 10 Optical sight 20 Optical system 21 Lens holding cylinder 22 Leaf spring 30 Housing 30a Reference position 31 Second protrusion 32 Pin control protrusion 40 Focus adjustment unit 50 Illumination adjustment unit 60 Magnification adjustment unit 70 Diopter adjustment unit 100 Impact point adjustment unit 110 Adjustment mechanism 111 Dial 111a Cylindrical portion 111b Notch 112 Shaft drive unit 112a Rotation ring 112b Shaft 112c Shaft base 112d Lock ring 113 Fixing screw 120 First ring 120a Connecting screw 121 First protrusion 130 Second ring 130a First through-hole 130b Second through-hole 131 First surface 131a First track 131b Second track 131c Connection holding part 132 Second surface 132a Rotation limiting groove 132b First holding part 132c Second holding part 141 Follower 141a, 151a, 152a, 153a Spring 151 First pin 152 Second pin 153 Malfunction prevention body

Claims

1. An optical sight for allowing a user to visually recognize a target, comprising: an optical system including a lens holding cylinder housing a lens group; a housing for housing the optical system; a point of impact adjustment unit provided on the housing, comprising an adjustment mechanism for changing the inclination of the lens holding cylinder without moving the dial up and down when the user rotates the dial; and; the point of impact adjustment unit further comprises a first ring connected to the dial and rotating integrally therewith; a second ring provided between the first ring and the housing; and; the first ring is provided with a first protrusion protruding toward the second ring, and is connected to the adjustment mechanism via the dial in a zero-stop state that is rotatable only in a first rotation direction; the zero-stop state is formed in such a manner that the first protrusion is prevented from advancing in a second rotation direction, which is the rotation direction opposite to the first rotation direction, by a first pin protruding from the second ring toward the first ring; the first pin retracts from the second ring before the first protrusion reaches the position of the first pin after the first ring starts rotating in the first rotation direction; characterized in that it is an optical sight.

2. The point of impact adjustment unit further comprises a rotation index providing mechanism for making it possible to recognize which rotation of the dial is being made based on a change in the rotational direction position of the second ring before and after interlocking rotation by rotating the second ring in a certain range in conjunction with the first ring when shifting from the first rotation to the second rotation of the first ring in the first rotation direction, according to the optical sight according to claim 1.

3. further comprises a follower body existing between the first ring and the second ring and being pressed from the first ring side against the second ring; the second ring is provided with a connecting and holding portion, which is a recess, on a first surface, which is a surface facing the first ring, and a rotation limiting groove extending with a certain length on a second surface, which is a surface facing the housing, and further comprises a first through hole, which is a hole penetrating the first surface and the second surface; the first pin exists between the second ring and the housing and is pressurized from the second ring side toward the housing side; the housing is provided with a second protrusion and a pin control protrusion protruding toward the second ring. The zero-stop state is formed in such a way that the first pin is pushed up by the pin control projection, passes through the first through-hole, and protrudes into the annular first track on the first surface that the first projection follows as the first ring 120 rotates, preventing the first projection from advancing in the second rotation direction. The rotation index providing mechanism is configured such that when the follower that follows the rotation of the dial along the annular second track on the first surface reaches the connection holding portion formed in the second track when the dial makes one full rotation in the first rotation direction, the second ring starts to rotate in conjunction with the first ring by engaging with the connection holding portion. As a result, the position of the pin control projection with respect to the second ring moves, releasing the pushing up of the first pin, and the first pin retracts from the first track, enabling the first projection to pass over the first through-hole. Further, after the second projection engaged with the rotation limiting groove moves from one end of the rotation limiting groove and stops at the other end, when the first ring 120 is further rotated, the follower disengages from the connection holding portion, releasing the interlock of the second ring, and the second rotation of the first ring in the first rotation direction is started. The optical sight according to claim 2, characterized in that.

4. A second pin that exists between the second ring and the housing and is pressed from the second ring side toward the housing side, A second through-hole that is a hole formed in the second ring and penetrates the first surface and the second surface, further comprising When the second ring starts to rotate in the first rotation direction in conjunction with the first ring, the position of the second ring with respect to the pin control projection moves, releasing the pushing up of the first pin and then pushing up the second pin. The first projection protrudes into the annular first track on the first surface that the first projection follows through the second through-hole, ending the second rotation of the first ring in the first rotation direction because the advancement of the first projection is blocked by the second pin. The optical sight according to claim 3, characterized in that.

5. A first holding portion and a second holding portion, which are two depressions formed on the second surface of the second ring, An anti-malfunction body provided between the second ring and the housing and pressed from the housing side against the second ring, further comprising When the second ring shifts from the first rotation to the second rotation in the first rotation direction of the first ring, the second ring rotates in the first rotation direction in conjunction with the first ring, so that the position of the second ring with respect to the malfunction prevention body moves, and the malfunction prevention body that was fitted into the first holding portion in the first rotation moves to the second holding portion and engages therewith The optical sight according to claim 3 or 4, characterized in that.

6. The optical sight according to claim 1, characterized in that the dial is detachable and the mounting direction can be changed, and by changing the mounting direction, the presence or absence of connection with the first ring can be changed.

7. The connection between the dial and the first ring is realized by the engagement of a convex portion provided on one side with a concave portion provided on the other side, and the connection is lost when the concave portion and the convex portion do not engage with each other due to a change in the mounting direction of the dial. The optical sight according to claim 6, characterized in that.

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