Dial adjustment device

Abstract

To provide a dial type adjusting device that facilitates operations to easily lock a first dial not to rotate and also release the locked dial.SOLUTION: A dial type adjusting device 100 that comprises an adjusting mechanism comprising a rotatable first dial 132 and a lock mechanism configured to lock the rotatable first dial 132 not to rotate and unlock the first dial is characterized in that the lock mechanism has a cylindrical second dial 142, and the first dial 132 and second dial 142 are arranged in two stages along an axis C of the dial type adjusting device 100. Consequently, the second dial 142 can be expanded in size both radially and axially as compared with a rectangular knob when restricted to a range of the outer diameter of the first dial 132, so that the second dial can be improved in rotational operability.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a dial-type adjustment device that locks and unlocks the rotation of a dial for adjusting an optical device, and more particularly to a dial-type adjustment device suitable for a sighting scope used for firearms, competitive shooting, and other target shooting sports. [Background technology]

[0002] Conventionally, aiming scopes have been used for firearms and shooting competitions. The aiming scope is used to aim the firearm or shooting competition, i.e., to set the target. The aiming scope is equipped with a dial-type adjustment device for aligning the axis of the gun barrel with the optical axis of the aiming scope, for aligning the distance to the target with the position where the bullet will fall, and for adjusting the flow of the bullet due to wind. The dial-type adjustment device is configured to be adjusted by rotating the dial. Some of these types of dial-type adjustment devices further include a locking mechanism for locking (fixing) or unlocking the rotation of the dial. Such a locking mechanism is disclosed, for example, in Patent Document 1 and Patent Document 2.

[0003] Both the sighting telescope described in Patent Document 1 and the locking turret described in Patent Document 2 are configured so that adjustments are made by rotating a dial (focus knob, cap), and the dial itself is pushed in and pulled up to lock and unlock the rotation of the dial. Because the dial and the member that locks and unlocks the rotation of the dial are the same, there is a problem that the rotational position of the dial may shift when the dial is fixed.

[0004] In order to solve this problem, Patent Document 3 has been devised. Patent Document 3 describes a dial-type adjustment device in which the dial of the adjustment mechanism and the knob of the locking mechanism for locking and unlocking the rotation of the dial are configured as separate members. This dial-type adjustment device is shown in FIG. 14. As shown in FIG. 14, the dial-type adjustment devices 300, 301, and 302 are attached to the scope body 32 of the sighting scope 30, and a knob 342 is disposed on the upper part of the dial 332. The knob 342 has a rotation axis different from the rotation axis of the dial 332. This makes it possible to lock and unlock the rotation of the dial 332 by rotating the knob 342 back and forth between the lock position P1 and the unlock position P2 without moving the dial 332. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4030857 [Patent Document 2] Patent No. 5543955 [Patent Document 3] Patent Publication No. 2021-196454 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the dial-type adjustment devices 300, 301, and 302 described in Patent Document 3, the knob 342 is substantially rectangular and disposed on the upper part of the cylindrical dial 332, so that it is difficult to increase the dimensions of the knob 342 in order to fit the dimensions of the knob 342 within the range of the outer diameter of the dial 332. This causes a problem that it is difficult to operate the knob 342 when the fingertips are thick or when wearing gloves.

[0007] Therefore, the present invention is devised to solve the above problems, and its object is to provide a dial-type adjustment device that allows the dial to be easily operated even when the user has thick fingertips or is wearing gloves. [Means for solving the problem]

[0008] In order to solve the above problems, the dial-type adjustment device of the present invention is a dial-type adjustment device having an adjustment mechanism with a rotatable first dial, and a locking mechanism configured to be switchable to lock or unlock the rotation of the first dial, characterized in that the locking mechanism has a cylindrical second dial, and the first dial and the second dial are arranged in two stages along the axis of the dial-type adjustment device.

[0009] According to this invention, there is provided a dial-type adjustment device having an adjustment mechanism with a rotatable first dial, and a locking mechanism configured to be switchable to lock or unlock the rotation of the first dial, wherein the locking mechanism has a cylindrical second dial, and the first dial and the second dial are arranged in two stages along the axis of the dial-type adjustment device. Therefore, when the dimensions of the second dial are kept within the range of the outer diameter of the first dial, the dimensions of the second dial can be made larger in the radial and axial directions compared to the dimensions of a rectangular knob, thereby improving the rotational operability of the second dial.

[0010] In the present invention, it is preferable that the second dial has the same rotation axis as the first dial. According to this invention, since the second dial has the same rotation axis as the first dial, when the dimension of the second dial is within the range of the outer diameter of the first dial, the dimension of the second dial can be made larger in the radial direction than when the second dial has a rotation axis different from that of the first dial, and therefore the operability of rotating the second dial can be further improved. The rotation axes of both the first dial and the second dial may be the axes of a dial-type adjustment device.

[0011] In the present invention, it is preferable that the locking mechanism further has an indicator tube, the second dial has an opening through which the surface of the indicator tube is exposed, the indicator tube is cylindrical and arranged radially inside the second dial and configured not to rotate together with the rotation of the second dial, and a position corresponding to the opening when the second dial is in the locked position and a position corresponding to the opening when the second dial is in the unlocked position are colored differently from each other.

[0012] According to this invention, the locking mechanism further has an indicator tube, the second dial has an opening through which the surface of the indicator tube is exposed, the indicator tube is cylindrical and arranged radially inside the second dial and is configured not to rotate with the rotation of the second dial, and different colors are given to a position corresponding to the opening when the second dial is in the locked position and a position corresponding to the opening when the second dial is in the unlocked position, so that different colors are exposed from the opening when the second dial is in the locked position and when it is in the unlocked position, and therefore it is possible to visually determine whether the second dial is in the locked position or the unlocked position without touching the second dial.

[0013] In the present invention, it is preferable that the second dial has a large number of openings arranged at angular intervals around the axis of the second dial. According to this invention, the second dial has a large number of openings arranged at angular intervals around the axis of the second dial, so that the openings are arranged so as to be diffused around the axis, thereby improving visibility of whether the second dial is in the locked position or the unlocked position.

[0014] In the present invention, it is preferable that the second dial has a large number of notches, which are arc-shaped, recessed radially inward, and arranged at angular intervals around the axis of the second dial. According to this invention, the second dial has a large number of notches, which are arc-shaped, recessed radially inward, and arranged at angular intervals around the axis of the second dial, and the large number of notches act as anti-slip, thereby improving the rotational operability of the second dial.

[0015] In the present invention, it is preferable that the second dial has a large number of openings, each of which is provided at the bottom of the large number of cutouts. According to this invention, the second dial has a large number of openings, each of which is provided at the bottom of the large number of cutouts, so that the bottoms of the large number of cutouts are unlikely to come into contact with fingers when rotating the second dial, thereby preventing the openings from interfering with the rotation of the second dial.

[0016] In the present invention, the adjustment mechanism includes an adjustment shaft to which the first dial is fixed, and a cylindrical engagement tube surrounding the adjustment shaft, and the engagement tube has a first unevenness on its inner circumference. The lock mechanism includes an operating ring fixed to the second dial and rotating together with the second dial, and a stop pin engaged with the adjustment shaft of the adjustment mechanism and moved by the operating ring so as to be detachable from the inner circumference of the engagement tube, the stop pin being T-shaped and having a tip formed to be wide in the circumferential direction of the engagement tube. It is preferable that the tip of the stop pin is provided with a second concave-convex structured to be able to mesh with the first concave-convex, the second concave-convex of the stop pin and the first concave-convex of the engagement tube are arranged opposite each other, and when the second dial is in a locked position, the first concave-convex and the second concave-convex are meshed to prevent the first dial from rotating, and when the second dial is in an unlocked position, the meshing between the first concave-convex and the second concave-convex is released to allow the first dial to rotate freely.

[0017] According to this invention, the adjustment mechanism has an adjustment shaft to which the first dial is fixed, and a cylindrical engagement tube surrounding the adjustment shaft, and the engagement tube is provided with a first unevenness on its inner circumference, the locking mechanism has an operating ring fixed to the second dial and rotating together with the second dial, and a stop pin engaged with the adjustment shaft of the adjustment mechanism and moved by the operating ring so as to be detachably attached to the inner circumference of the engagement tube, the stop pin is T-shaped and has a tip portion formed to be wide in the circumferential direction of the engagement tube, the tip portion of the stop pin is provided with a second unevenness configured to be able to mesh with the first unevenness, and the second unevenness of the stop pin and The stop pin is arranged opposite the first concave-convex of the engagement tube, and when the second dial is set to the locked position, the first concave-convex and the second concave-convex mesh together to prevent the first dial from rotating, and when the second dial is set to the unlocked position, the first concave-convex and the second concave-convex mesh together to allow the first dial to rotate freely. Therefore, when the second dial is set to the locked position, the second concave-convex of the stop pin and the first concave-convex of the engagement tube mesh together, so that the rotation of the first dial can be firmly fixed compared to when the ball of a click mechanism is pressed against the first concave-convex of the engagement tube to lock the rotation of the first dial.

[0018] In the present invention, it is preferable that the first concave and convex portions have a large number of concave and convex portions arranged alternately one by one around the axis of the dial-type adjustment device, and the second concave and convex portions have a large number of concave and convex portions arranged alternately one by one in the wide direction of the stop pin, and when the first concave and convex portions and the second concave and convex portions are in an engaged state, the large number of convex portions of the first concave and convex portions are respectively inserted into the large number of concave portions of the second concave and convex portions of the second concave and convex portions are respectively inserted into the large number of concave portions of the first concave and convex portions.

[0019] According to this invention, the first concave and convex portions have a large number of concave and convex portions arranged alternately one by one around the axis of the dial-type adjustment device, and the second concave and convex portions have a large number of concave and convex portions arranged alternately one by one in the wide direction of the stop pin, and when the first concave and convex portions are in an interlocking state with each other, the large number of convex portions of the first concave and convex portions are inserted into the large number of concave portions of the second concave and convex portions of the second concave and convex portions are inserted into the large number of concave portions of the first concave and convex portions, respectively, thereby firmly connecting the first concave and convex portions to each other.

[0020] In the present invention, it is preferable that the stop pin is made of a magnetic material, the operating ring is equipped with a magnet, and the stop pin is attracted to the operating ring by the magnetic force of the magnet and abuts against the operating ring. According to this invention, since the stop pin is made of a magnetic material, the operating ring is equipped with a magnet, and the stop pin is attracted to the operating ring by the magnetic force of the magnet and abuts against the operating ring, there is no need to arrange a spring compared to the case where the stop pin is attracted to the operating ring by a spring, so the size of the stop pin can be made larger and the connection strength between the stop pin and the engagement tube can be improved. Effect of the Invention

[0021] As described above, according to the present invention, it is possible to obtain the excellent effect of easily locking and unlocking the rotation of the first dial. [Brief description of the drawings]

[0022] [Figure 1] 1 is a schematic perspective view showing a sighting scope equipped with a dial-type adjustment device according to an embodiment of the present invention. [Diagram 2] 2 is a schematic perspective view showing an enlarged view of a dial-type adjustment device of the present embodiment in the sighting scope. FIG. [Diagram 3] 3 is an enlarged view showing a portion surrounded by a two-dot chain line i in FIG. 2, illustrating a state in which the second dial is in an unlocked position. FIG. [Figure 4] 4 is a diagram showing a state in which the second dial in FIG. 3 is in a locked position. FIG. [Diagram 5] FIG. 2 is a schematic exploded perspective view showing the dial-type adjustment device of the present embodiment. [Figure 6] FIG. 4 is a schematic perspective view showing the operating ring as viewed from one direction. [Figure 7] 13 is a schematic perspective view showing the operating ring as viewed from another direction. FIG. [Figure 8] FIG. 4 is a schematic cross-sectional view showing a state in which the second dial of the dial-type adjustment device is in a locked position. [Figure 9] 9 is a cross-sectional view showing a state cut along the line II of FIG. 8. [Figure 10] 10 is a schematic cross-sectional view showing a state in which the second dial of the dial-type adjustment device is in an unlocked position. FIG. [Figure 11] 11 is a cross-sectional view taken along the line II-II of FIG. 10. [Figure 12] FIG. 11 is a schematic cross-sectional view showing a dial-type adjustment device according to another embodiment. [Figure 13] 13 is an enlarged view showing a portion surrounded by a two-dot chain line ii in FIG. 12. [Figure 14] FIG. 1 is a schematic perspective view showing a conventional dial-type adjustment device attached to a scope body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The dial-type adjustment device of this embodiment according to the present invention will be described in detail below. FIG. 1 is a schematic perspective view showing a sighting scope equipped with a dial-type adjustment device of this embodiment according to the present invention. FIG. 2 is a schematic perspective view showing an enlarged view of the dial-type adjustment device of this embodiment in the sighting scope. As shown in FIGS. 1 and 2, dial-type adjustment devices 100, 101 are attached to a sighting scope 10 like a rifle scope. This sighting scope 10 extends in one direction, and an objective lens section 11, a scope body 12, a zoom adjustment section 13, and an eyepiece lens section 14 are sequentially connected along an optical axis O. A plurality of dial-type adjustment devices 100, 101 and a focus dial 15 are attached to the scope body 12. These plurality of dial-type adjustment devices 100, 101 and focus dial 15 are arranged around the optical axis O at angular intervals. The focus dial 15 is a dial for adjusting the focal position. The multiple dial-type adjustment devices 100, 101 are for adjusting the optical system of the sighting scope 10, and since they have the same internal structure, one of the dial-type adjustment devices 100 will be described below, and a description of the remaining dial-type adjustment devices 101 will be omitted. In the illustrated example, there are two dial-type adjustment devices 100, 101.

[0024] In addition, in Fig. 5 to Fig. 8, Fig. 10, and Fig. 12, the direction indicated by the arrow Up is the upper side (the upper side of the paper in Fig. 5 to Fig. 8, Fig. 10, and Fig. 12), the direction indicated by the arrow Dw is the lower side (the lower side of the paper in Fig. 5 to Fig. 8, Fig. 10, and Fig. 12), and the directions indicated by the arrows Up and Dw are the up-down directions. These directions indicate relative positional relationships, and do not indicate absolute positional relationships with respect to the direction of gravity. In a state in which the dial-type adjustment device 100 is attached to the scope body 12 of the aiming scope 10, the upper side indicated by the arrow Up is the direction protruding from the scope body 12, and the lower side indicated by the arrow Dw is the side of the scope body 12. The up-down directions indicated by the arrows Up and Dw respectively correspond to the direction along the axis C of the dial-type adjustment device 100 and the direction along the axis Ct of the operating ring 141.

[0025] 5 is a schematic exploded perspective view showing the dial type adjustment device of this embodiment. As shown in Fig. 5, the dial type adjustment device 100 has an adjustment mechanism 110 and a lock mechanism 140. The adjustment mechanism 110 has a support portion 120 and a rotating portion 130.

[0026] The support part 120 of the adjustment mechanism 110 has an adjustment bearing 121 and an engagement tube 122. The adjustment bearing 121 has a double structure with a hollow cylindrical inner tube part 121a and an annular outer ring part 121b on the inside and outside. The inner tube part 121a protrudes from the outer ring part 121b to the upper side indicated by the arrow Up and to the lower side indicated by the arrow Dw, and the lower part of the inner tube part 121a is screwed into the opening of the scope body 12. The engagement tube 122 is hollow cylindrical. The adjustment bearing 121 is accommodated in the engagement tube 122, and the engagement tube 122 and the adjustment bearing 121 are fixed. As a result, the adjustment bearing 121 and the engagement tube 122 are fixed on the outer periphery of the scope body 12. In other words, the support part 120 of the adjustment mechanism 110 is fixed on the outer periphery of the scope body 12.

[0027] The rotating part 130 of the adjustment mechanism 110 has an adjustment shaft 131, a first dial 132, and a shaft body 133. The adjustment shaft 131 is hollow and cylindrical, and a large diameter part 131a having a large radial width and a small diameter part 131b having a small radial width are connected vertically. In other words, the small diameter part 131b protrudes downward from the large diameter part 131a. The first dial 132 is hollow and cylindrical. The shaft body 133 is cylindrical. The adjustment shaft 131 is housed in the first dial 132, and the first dial 132 and the adjustment shaft 131 are fixed by screws N1, N1, N1. The shaft body 133 is inserted into the small diameter part 131b of the adjustment shaft 131, and a part of the shaft body 133 protrudes downward from the small diameter part 131b of the adjustment shaft 131. This connects the adjustment shaft 131, the first dial 132, and the shaft body 133.

[0028] Fig. 8 is a schematic cross-sectional view showing a state in which the second dial of the dial-type adjustment device is in a locked position. Fig. 10 is a schematic cross-sectional view showing a state in which the second dial of the dial-type adjustment device is in an unlocked position. As shown in Figs. 8 and 10, the rotating part 130 and the support part 120 of the adjustment mechanism 110 are connected. Specifically, the small diameter part 131b of the adjustment shaft 131 of the rotating part 130 is screwed into the inner cylindrical part 121a of the adjustment bearing 121 of the support part 120 from above, and the shaft body 133 of the rotating part 130 protrudes downward from the inner cylindrical part 121a of the adjustment bearing 121 of the support part 120.

[0029] In this state, the rotating part 130 of the adjustment mechanism 110 is configured to be rotatable around the axis C relative to the support part 120. Specifically, the adjustment shaft 131 of the rotating part 130 is rotatably connected to the adjustment bearing 121 of the support part 120, and the first dial 132, the adjustment shaft 131, and the shaft body 133 of the rotating part 130 are fixed and configured to rotate together around the axis C. Therefore, when the first dial 132 of the rotating part 130 is rotated, the shaft body 133 of the rotating part 130 moves in and out of the scope body 12, and presses or releases the internal mechanism in the sighting scope 10. At this time, an annular stop ring 135 is attached to the lower end of the small diameter part 131b of the adjustment shaft 131, and regulates the amount of protrusion of the shaft body 133 into the scope body 12.

[0030] At the outer periphery of the dial-type adjustment device 100, a cylindrical index tube 124 is attached to the outer periphery of the engagement tube 122 of the support part 120. This index tube 124 is disposed inside the first dial 132 of the rotating part 130. The first dial 132 and the index tube 124 are disposed vertically so that they partially overlap in the vertical direction. In other words, the index tube 124 of the support part 120 is exposed from the lower side of the first dial 132 of the rotating part 130. A scale is provided on the outer periphery of the first dial 132, and a reference line is provided on the outer periphery of the index tube 124. Therefore, by reading the scale of the first dial 132 relative to the reference line of the index tube 124, the amount of rotation of the first dial 132 can be grasped.

[0031] Returning to Fig. 2, the first dial 132 has a large number of notches 132a on its outer periphery. These notches 132a are arc-shaped, recessed radially inward, and arranged at angular intervals around the axis C of the dial-type adjustment device 100. This allows the large number of notches 132a to act as anti-slip devices, improving the operability of rotating the first dial 132. In the illustrated example, there are 12 of these notches 132a.

[0032] FIG. 9 is a cross-sectional view showing a state cut along the line of the arrow II in FIG. 8. FIG. 11 is a cross-sectional view showing a state cut along the line of the arrow II-II in FIG. 10. As shown in FIG. 9 and FIG. 11, the adjustment mechanism 110 is provided with a first click mechanism 136. This first click mechanism 136 is disposed between the large diameter portion 131a of the adjustment shaft 131 and the engagement tube 122. Specifically, a bottomed hole extending from the outer periphery to the inside in the radial direction is formed in the large diameter portion 131a of the adjustment shaft 131, and the coil spring 136c, the ball holding member 136b, and the ball 136a are sequentially inserted into this hole, and the ball 136a is rotatably supported by the ball holding member 136b and is disposed so as to be freely retractable on the outer periphery of the large diameter portion 131a of the adjustment shaft 131 by the coil spring 136c. The outer periphery of the large diameter portion 131a of the adjustment shaft 131 and the inner periphery of the engagement tube 122 are disposed opposite to each other. A first unevenness 122a is formed on the inner circumference of the engagement tube 122. The first unevenness 122a has a plurality of concaves and convex parts extending in the vertical direction (direction along the axis C) arranged alternately around the axis C, and the plurality of concave parts are configured to be able to engage with the ball 136a. Therefore, the ball 136a of the click mechanism 136 and the first unevenness 122a of the engagement tube 122 are arranged opposite to each other, and the ball 136a engages with one of the plurality of concave parts of the first unevenness 122a in a state in which it can be retracted into the hole against the biasing force of the coil spring 136c. In this state, when the first dial 132 is rotated, the adjustment shaft 131 rotates, and the ball 136a retracts into the hole and overcomes the plurality of convex parts of the first unevenness 122a one by one. This provides a clicking sensation to the rotation of the first dial 132.

[0033] Returning to FIG. 5, the lock mechanism 140 has an actuation ring 141, a second dial 142, and a stop pin 143. FIG. 6 is a schematic perspective view showing the actuation ring seen from one direction. FIG. 7 is a schematic perspective view showing the actuation ring seen from another direction. As shown in FIGS. 6 and 7, the actuation ring 141 has an annular ring portion 141a and a rod-shaped portion 141b extending in one direction. One end of the rod-shaped portion 141b is connected to the bottom of the annular portion 141a, and the rod-shaped portion 141b extends in the vertical direction from the bottom of the annular portion 141a downward. In other words, the rod-shaped portion 141b extends in a direction perpendicular to a plane including the annular portion 141a, that is, in a direction along the axis Ct of the actuation ring 141. This rod-shaped portion 141b has a step in the middle portion in the longitudinal direction, and a tip portion (lower portion) 141ba of the rod-shaped portion 141b that is far from the annular portion 141a is positioned radially inward of the annular portion 141a compared to a base portion (upper portion) of the rod-shaped portion 141b that is closer to the annular portion 141a. In other words, the tip portion 141ba of the rod-shaped portion 141b is closer to the axis Ct than the base portion.

[0034] Returning to Fig. 2, the second dial 142 has a large number of notches 142a on its outer periphery, similar to the first dial 132. These notches 142a are arc-shaped, recessed radially inward, and arranged at angular intervals around the axis C. This allows the notches 142a to act as anti-slip devices, improving the operability of rotating the second dial 142. In the illustrated example, there are four notches 142a.

[0035] 9 and 11, the stop pin 143 is T-shaped and the tip end is wider than the base end. This wider direction is a direction perpendicular to the axis C, i.e., the circumferential direction around the axis C, in other words, the circumferential direction of the engagement tube 122. A second unevenness 143a is formed on the tip end of the stop pin 143. The second unevenness 143a is configured to be able to mesh with the first unevenness 122a of the engagement tube 122, and similar to the first unevenness 122a, a plurality of recesses and a plurality of protrusions extending in the vertical direction (direction along the axis C) are alternately arranged one by one in the wider direction of the tip end.

[0036] As shown in Figures 8 and 10, the ring portion 141a of the operating ring 141 is rotatably disposed on the large diameter portion 131a of the adjustment shaft 131, and the second dial 142 is stacked on the ring portion 141a of the operating ring 141. As shown in Figure 5, screws N2, N2 and screws T, T are sequentially inserted into the screw holes of the second dial 142 to fix the second dial 142 and the operating ring 141. This allows the operating ring 141 to rotate together with the second dial 142. Both the second dial 142 and the operating ring 141 are allowed to rotate around the axis C.

[0037] 8 and 10, in this state, the rod-shaped portion 141b of the actuation ring 141 extends vertically into the adjustment shaft 131. A tip end portion 141ba of the rod-shaped portion 141b abuts against the outer periphery of the inner cylindrical portion 121a of the adjustment bearing 121, thereby positioning the rod-shaped portion 141b of the actuation ring 141. The tip end portion 141ba of the rod-shaped portion 141b is configured to be slidable relative to the outer periphery of the inner cylindrical portion 121a of the adjustment bearing 121. For this reason, when the second dial 142 is rotated, the rod-shaped portion 141b of the actuation ring 141 rotates around the axis C.

[0038] The stop pin 143 engages with the large diameter portion 131a of the adjustment shaft 131 and is configured to be movable in the radial direction around the axis C. Specifically, a hole extending in the radial direction is provided in the large diameter portion 131a of the adjustment shaft 131, and the stop pin 143 is inserted into this hole from the outer periphery side of the adjustment shaft 131, so that the stop pin 143 is arranged to be movable in the radial direction. A tip end of this stop pin 143 is arranged radially outside the adjustment shaft 131, and a base end is arranged radially inside the adjustment shaft 131.

[0039] The tip-side portion 141ba of the rod-shaped portion 141b in the actuating ring 141 is disposed at a position corresponding to the stop pin 143. As shown in FIGS. 6 and 7, the tip-side portion 141ba of the actuating ring 141 has a pressing surface As formed on the radially outer side, a recess Rs provided on the radially inner side, and a magnet Mg accommodated in this recess Rs. That is, the magnet Mg is disposed on the side opposite to the pressing surface As of the actuating ring 141. The stop pin 143 is made of a magnetic material such as metal and is configured to be attracted by magnetic force. For this reason, as shown in FIGS. 9 and 11, the stop pin 143 is attracted radially inward by the magnetic force of the magnet Mg and is in contact with the pressing surface As. That is, the base end portion of the stop pin 143 is in contact with the actuating ring 141.

[0040] Returning to FIG. 6, here, the pressing surface As of the actuating ring 141 is gradually recessed radially inward from one-side end Q1 to the other-side end Q2 around the axis Ct, and gradually protrudes radially outward from the other-side end Q2 to the one-side end Q1 around the axis Ct. In other words, when the distance from the axis Ct of the actuating ring 141 to the one-side end Q1 of the pressing surface As is D1 and the distance from the axis Ct to the other-side end Q2 of the pressing surface As is D2, the distance D1 is larger than the distance D2 (D1 > D2), and the distance D2 is smaller than the distance D1 (D2 < D1). For this reason, when the stop pin 143 comes into contact with the one-side end Q1 of the pressing surface As, it is pushed out radially outward, and when it comes into contact with the other-side end Q2 of the pressing surface As, it is drawn radially inward.

[0041] 9 and 11, the tip of the stop pin 143 is disposed opposite the inner circumference of the engagement tube 122, and the second unevenness 143a of the stop pin 143 faces the first unevenness 122a of the engagement tube 122. Therefore, when the base end of the stop pin 143 abuts against one side end Q1 of the pressing surface As, the stop pin 143 is pushed outward in the radial direction, and the second unevenness 143a of the stop pin 143 engages with the first unevenness 122a of the engagement tube 122. On the other hand, when the base end of the stop pin 143 abuts against the other side end Q2 of the pressing surface As, the stop pin 143 is pulled inward in the radial direction, and the engagement between the second unevenness 143a of the stop pin 143 and the first unevenness 122a of the engagement tube 122 is released.

[0042] In this meshing state between the first and second unevennesses 122a and 143a, the multiple convex portions of the first and second unevennesses 122a are inserted into the multiple concave portions of the second unevennesses 143a, respectively, and the multiple convex portions of the second unevennesses 143a are inserted into the multiple concave portions of the first and second unevennesses 122a, respectively. This allows the first and second unevennesses 122a and 143a to be firmly connected, making it difficult for the stop pin 143 and the engagement tube 122 to come off in the rotational direction around the axis C.

[0043] The operating ring 141 of the lock mechanism 140 is configured to rotate together with the second dial 142, and the stop pin 143 is engaged with the adjustment shaft 131 of the rotating part 130, which is fixed to the first dial 132. The engagement tube 122 of the support part 120 is fixed to the adjustment bearing 121. Therefore, as shown in Fig. 9, when the second dial 142 is set to the lock position, the second concave-convex 143a of the stop pin 143 and the first concave-convex 122a of the engagement tube 122 mesh with each other, making the first dial 132 unable to rotate, and the rotation of the first dial 132 is locked. In contrast, as shown in FIG. 11, when the second dial 142 is placed in the unlocked position, the engagement between the second projections 143a of the stop pin 143 and the first projections 122a of the engagement tube 122 is released, the first dial 132 becomes rotatable, and the rotation lock of the first dial 132 is released.

[0044] Returning to Figs. 8 and 10, an indicator tube 144 is provided inside the second dial 142. This indicator tube 144 is hollow and cylindrical, and is configured not to rotate together with the second dial 142. Specifically, the indicator tube 144 is disposed on the outer periphery of a cylindrical cover member 134 so as to surround the cover member, and this cover member 134 is disposed inside the large diameter portion 131a of the adjustment shaft 131. In this state, the indicator tube 144 is disposed above the large diameter portion 131a of the adjustment shaft 131 in the vertical direction, and is disposed between the second dial 142 and the cover member 134 in the radial direction.

[0045] FIG. 3 is an enlarged view of the portion surrounded by the two-dot chain line i in FIG. 2, and shows a state in which the second dial is in the unlocked position. FIG. 4 shows a state in which the second dial in FIG. 3 is in the locked position. As shown in FIGS. 3 and 4, the second dial 142 has an opening Op, and the surface of the indicator tube 144 is exposed from this opening Op. Different colors CL1 and CL2 are applied to the surface of the indicator tube 144 at a position corresponding to the opening Op when the second dial 142 is in the locked position and at a position corresponding to the opening Op when the second dial 142 is in the unlocked position. Therefore, when the second dial 142 is in the locked position, the color CL1 is exposed from the opening Op (see FIG. 4), and when the second dial 142 is in the unlocked position, the color CL2 is exposed from the opening Op (see FIG. 3). This allows the user to visually determine whether the second dial 142 is in the locked position or the unlocked position from the difference between the colors CL1 and CL2 without touching the second dial 142. For example, color CL1 is red, and color CL2 is blue, white, or colorless.

[0046] The second dial 142 may have one opening Op or two or more openings Op. In the illustrated example, there are four openings Op. The multiple openings Op are arranged at angular intervals around the axis of the second dial 142. This improves visibility of whether the second dial 142 is in the locked position or the unlocked position compared to when there is only one opening Op.

[0047] Moreover, the openings Op of the second dial 142 are provided at the bottoms (radially inner parts) of the cutouts 142a. The bottoms of the cutouts 142a are unlikely to come into contact with fingers when rotating the second dial 142, so it is possible to prevent the openings Op from interfering with the rotation of the second dial 142. In the illustrated example, four openings Op are provided at the bottoms of the four cutouts 142a, respectively.

[0048] Returning to FIG. 5, the lock mechanism 140 is provided with a second click mechanism 146. As shown in FIG. 8 and FIG. 10, the second click mechanism 146 is disposed between the large diameter portion 131a of the adjustment shaft 131 and the rod-shaped portion 141b of the actuation ring 141. Specifically, a hole penetrating in the radial direction is formed in the large diameter portion 131a of the adjustment shaft 131, and the ball 146a, the coil spring 146c, and the set screw 146d are inserted into this hole in order from the outer periphery side of the large diameter portion 131a of the adjustment shaft 131. The set screw 146d closes the radial outside of the hole. The ball 146a is disposed inside the adjustment shaft 131 and is biased radially inward by the coil spring 146c, and is configured to be able to retract into the hole radially outward against the biasing force of the coil spring 146c. A rod-shaped portion 141 b of the operating ring 141 is disposed inside the adjustment shaft 131 , and the balls 146 a abut against the rod-shaped portion 141 b of the operating ring 141 .

[0049] As shown in FIG. 6, at this time, two recesses R1, R2 are formed in the rod-shaped portion 141b of the actuation ring 141. The two recesses R1, R2 are configured to be able to engage with the ball 146a and are arranged at an angular interval around the axis Ct of the actuation ring 141. One recess R1 is arranged at an angular position corresponding to one side portion Q1 of the pressing surface As, and the other recess R2 is arranged at an angular position corresponding to the other side portion Q2 of the pressing surface As. Therefore, the ball 146a is configured to engage with one recess R1 when the second dial 142 is in the lock position, and to engage with the other recess R2 when the second dial 142 is in the unlock position. This provides a clicking sensation to the reciprocating rotation of the second dial 142 between the lock position and the unlock position. In the illustrated example, the two recesses R1, R2 are arranged on the upper side of the pressing surface As in the tip side portion 141ba, that is, between the step of the rod-shaped portion 141b of the actuation ring 141 and the pressing surface As.

[0050] As shown in Fig. 2, the first dial 132 and the second dial 142 are configured in two stages in the vertical direction. In other words, the first dial 132 and the second dial 142 are arranged in two stages along the axis C. Both the first dial 132 and the second dial 142 are cylindrical. As a result, when the dimension of the second dial 142 is within the range of the outer diameter of the first dial 132, the dimension of the second dial 142 can be made larger than that of a rectangular knob, and the rotation operability can be improved.

[0051] This second dial 142 has the same axis of rotation as the first dial 132. Specifically, like the first dial 132, the second dial 142 is configured to be rotatable around the axis C of the dial-type adjustment device 100. For this reason, when the dimension of the second dial 142 is within the range of the outer diameter of the first dial, the dimension of the second dial 142 can be made larger in the radial direction compared to when the second dial 142 has an axis of rotation different from that of the first dial 132, and rotational operability can be further improved.

[0052] As shown in Figures 8 and 10, in the dial-type adjustment device 100, rubber rings S1, S2, S3, and S4 are interposed between the adjustment bearing 121 and the scope body 12, between the adjustment shaft 131 and the shaft body 133, between the adjustment shaft 131 and the adjustment bearing 121, and between the first handle 132 and the engagement tube 122, ensuring that the interior of the dial-type adjustment device 100 is protected from dust and water.

[0053] FIG. 12 is a schematic cross-sectional view showing another dial type adjustment device. FIG. 13 is an enlarged view showing a portion surrounded by a two-dot chain line ii in FIG. 12. As shown in FIGS. 12 and 13, the lock mechanism 140 of the dial type adjustment device 100 is configured to press the stop pin 143 against the first concave-convex 122a of the engagement tube 122 and release the pressing, while the lock mechanism 240 of the other dial type adjustment device 200 is configured to press the ball 236a of the first click mechanism 236 against the first concave-convex 122a of the engagement tube 122 and release the pressing. That is, in the other dial type adjustment device 200, the lock mechanism 240 and the first click mechanism 236 are used together. In the other dial type adjustment device 200, the same parts as those of the dial type adjustment device 100 are denoted by the same reference numerals, and their description will be omitted. The adjustment mechanism 110, second dial 142, indicator tube 144, and second click mechanism 146 of this other dial type adjustment device 200 are the same as the adjustment mechanism 110, second dial 142, indicator tube 144, and second click mechanism 146 of the above-mentioned dial type adjustment device 100. The actuation ring 241 of the other dial type adjustment device 200 is the same as the actuation ring 141 of the dial type adjustment device 100, except that the magnet Mg is not provided.

[0054] As shown in FIG. 13, specifically, the dial type adjustment device 200 does not have a stop pin 134, and a first click mechanism 236 is disposed at a position corresponding to the stop pin 134 of the dial type adjustment device 100. This first click mechanism 236 is the same as the first click mechanism 136 of the dial type adjustment device 100, and has a ball 236a, a ball holding member 236b, and a coil spring 236c. This coil spring 236c, ball holding member 236b, and ball 236a are inserted in order from the outer periphery into the hole of the adjustment shaft 131. The radially inner end of the ball holding member 236b abuts against the pressing surface As of the actuation ring 241, and the ball 236a is rotatably held at the radially outer end. The ball 236a is biased radially outward by a coil spring 236c, and engages with the first irregularities 122a of the engagement tube 122 in a state in which the ball 236a can retract radially inward into the hole against the biasing force of the coil spring 236c. The first irregularities 122a are the same as the first irregularities 122a of the dial-type adjustment device 100.

[0055] In this state, when the second dial 142 is set to the lock position, one side Q1 of the pressing surface As abuts against the ball holding member 236b, the distance between the pressing surface As and the engagement tube 122 is narrowed, the ball holding member 236b is pushed outward in the radial direction, and the ball 236a is pressed against the first irregularity 122a of the engagement tube 122. At this time, the ball 236a cannot move radially inward against the biasing force of the coil spring 236c, and the first dial 132 cannot rotate. On the other hand, when the second dial 142 is set to the unlock position, the other side Q2 of the pressing surface As abuts against the ball holding member 236b, the distance between the pressing surface As and the engagement tube 122 is widened, the ball 236a can move radially inward against the biasing force of the coil spring 236c, and the first dial 132 can rotate. Therefore, the other dial type adjustment device 200 can use the first click mechanism 236 to lock and unlock the rotation of the first dial 132, thereby reducing the number of parts compared to the dial type adjustment device 100.

[0056] In the dial-type adjustment devices 100, 200 configured as described above, the second dial 142 is rotated back and forth to switch between a locked position and an unlocked position in order to enable or disable the rotation of the first dial 132.

[0057] In the present embodiment, the dial-type adjustment devices 100, 200 have a cylindrical second dial 142 disposed above the first dial 132, and the first dial 132 and the second dial 142 are disposed in two stages, so that when the dimensions of the second dial 142 are within the range of the outer diameter of the first dial 132, the dimensions of the second dial 142 can be made larger in the radial direction and in the direction along the axis C than a rectangular knob, thereby improving the operability of rotating the second dial 142. In particular, the second dial 142 can be easily rotated even with gloves on the hands.

[0058] In this embodiment, since the second dial 142 has the same axis of rotation as the first dial 132, when the dimensions of the second dial 142 are within the range of the outer diameter of the first dial, the dimensions of the second dial 142 can be made larger in the radial direction compared to when the second dial 142 has an axis of rotation different from that of the first dial 132, thereby further improving the ease of rotation of the second dial 142.

[0059] In this embodiment, the second dial 142 has a number of notches 142a on its outer periphery, which are arc-shaped, recessed radially inward, and arranged at angular intervals around the axis C, so that the number of notches 142a acts as an anti-slip surface, further improving the rotational operability of the second dial 142.

[0060] In this embodiment, the second dial 142 has an opening Op, and a cylindrical indicator tube 144 is arranged inside the second dial 142. This indicator tube 144 is configured not to rotate together with the second dial 142, and different colors CL1, CL2 are applied to a position corresponding to the opening Op when the second dial 142 is in the locked position and a position corresponding to the opening Op when the second dial 142 is in the unlocked position. As a result, different colors CL1, CL2 are exposed from the opening Op when the second dial 142 is in the locked position and when it is in the unlocked position, so that it is possible to visually determine whether the second dial 142 is in the locked position or the unlocked position without touching the second dial 142.

[0061] In this embodiment, the second dial 142 has a large number of openings Op, which are arranged at angular intervals around the axis of the second dial 142, thereby improving visibility as to whether the second dial 142 is in the locked position or the unlocked position compared to when there is only one opening Op.

[0062] The dial type adjustment devices 100 and 200 of the present embodiment are not limited to the above-mentioned illustrated examples, and various modifications can be made without departing from the scope of the present invention. For example, in the dial type adjustment devices 100 and 200 of the present embodiment, the second dial 142 has the same rotation axis as the first dial 132, but the second dial 142 may have a rotation axis different from that of the first dial 132.

[0063] Although the dial-type adjustment devices 100, 200 of the present embodiment are attached to a sighting scope 10 such as a riflescope, they may also be attached to a telescope or binoculars. [Explanation of symbols]

[0064] 10...sighting scope, 11...objective lens section, 12...scope body, 13...zoom adjustment section, 14...eyepiece lens section, 15...focus dial, 100, 101, 200...dial-type adjustment device, 110...adjustment mechanism, 120...support part, 121...adjustment bearing, 121a...inner tube section, 121b...outer ring section, 122...engagement tube, 122a...first concave / convex, 124...index tube, 130...rotating part, 131...adjustment shaft, 131a...large diameter section, 131b...small diameter section, 132...first dial, 132a, 142a...notch, 133...shaft body, 134...cover member, 135...stop ring, 136, 236...first click mechanism, 136a, 146a, 236a...ball, 136b, 23 6b...ball retaining member, 136c, 146c, 236c...coil spring, 140, 240...locking mechanism, 141, 241...operating ring, 141a...annular portion, 141b...rod-shaped portion, 141ba...tip portion, 142...second dial, 143...stop pin, 143a...second concave / convex portion, 144...display tube, 146...second click mechanism, 146d...set screw, As...pressing surface, C, Ct...axis, CL1, CL2...color, D1, D2...distance, Mg...magnet, N1, N2...screw, O...optical axis, Op...opening, P1...locking position, P2...unlocking position, Q1...one side end, Q2...other side end, R1, R2, Rs...recess, S1, S2, S3...rubber ring, T...screw fastening, Up, Dw...arrow.

Claims

1. an adjustment mechanism including a rotatable first dial; a lock mechanism configured to be switchable between locking and unlocking the rotation of the first dial, the lock mechanism has a cylindrical second dial, the first dial and the second dial are arranged in two stages along the axis of the dial-type adjustment device, The locking mechanism further includes an indicator tube. the second dial has an opening through which a surface of the display tube is exposed; the indicator tube is cylindrical, disposed radially inside the second dial, and configured not to rotate together with the rotation of the second dial; a position corresponding to the opening when the second dial is in the locked position and a position corresponding to the opening when the second dial is in the unlocked position are given different colors; the second dial has a number of notches, the number of notches being arc-shaped, recessed radially inward, and arranged at angular intervals around an axis of the second dial; A dial-type adjustment device in which the second dial has a large number of openings, each of which is provided at the bottom of one of the many cutouts.

2. an adjustment mechanism including a rotatable first dial; a lock mechanism configured to be switchable between locking and unlocking the rotation of the first dial, the lock mechanism has a cylindrical second dial, the first dial and the second dial are arranged in two stages along the axis of the dial-type adjustment device, the second dial has the same rotation axis as the first dial; The locking mechanism further includes an indicator tube. the second dial has an opening through which a surface of the display tube is exposed; the indicator tube is cylindrical, disposed radially inside the second dial, and configured not to rotate together with the rotation of the second dial; a position corresponding to the opening when the second dial is in the locked position and a position corresponding to the opening when the second dial is in the unlocked position are given different colors; the second dial has a number of notches, the number of notches being arc-shaped, recessed radially inward, and arranged at angular intervals around an axis of the second dial; A dial-type adjustment device in which the second dial has a large number of openings, each of which is provided at the bottom of one of the many cutouts.

3. an adjustment mechanism including a rotatable first dial; a lock mechanism configured to be switchable between locking and unlocking the rotation of the first dial, the lock mechanism has a cylindrical second dial, the first dial and the second dial are arranged in two stages along the axis of the dial-type adjustment device, The adjustment mechanism includes: an adjustment shaft to which the first dial is fixed; a cylindrical engagement tube surrounding the adjustment shaft, The engagement cylinder has a first projection and recess on an inner periphery thereof, The locking mechanism includes: an operating ring fixed to the second dial and rotating together with the second dial; a stop pin that is engaged with the adjustment shaft of the adjustment mechanism and is configured to be movable by the actuation ring so as to be detachable from an inner periphery of the engagement cylinder, the stop pin is T-shaped, and a tip portion is formed to be wide in a circumferential direction of the engagement cylinder, and a second concave-convex portion is provided on the tip portion of the stop pin so as to be able to mesh with the first concave-convex portion, the second concave-convex of the stop pin and the first concave-convex of the engagement cylinder are disposed opposite to each other, and when the second dial is placed in a lock position, the first concave-convex and the second concave-convex mesh with each other to prevent the first dial from rotating; A dial-type adjustment device configured such that, when the second dial is placed in an unlocked position, the engagement between the first and second concaves and convexes is released, allowing the first dial to rotate freely.

4. an adjustment mechanism including a rotatable first dial; a lock mechanism configured to be switchable between locking and unlocking the rotation of the first dial, the lock mechanism has a cylindrical second dial, the first dial and the second dial are arranged in two stages along the axis of the dial-type adjustment device, the second dial has the same rotation axis as the first dial; The adjustment mechanism includes: an adjustment shaft to which the first dial is fixed; a cylindrical engagement tube surrounding the adjustment shaft, The engagement cylinder has a first projection and recess on an inner periphery thereof, The locking mechanism includes: an operating ring fixed to the second dial and rotating together with the second dial; a stop pin that is engaged with the adjustment shaft of the adjustment mechanism and is configured to be movable by the operating ring so as to be detachable from an inner periphery of the engagement cylinder, the stop pin is T-shaped, and a tip portion is formed to be wide in a circumferential direction of the engagement cylinder, and a second concave-convex portion is provided on the tip portion of the stop pin so as to be able to mesh with the first concave-convex portion, the second concave-convex of the stop pin and the first concave-convex of the engagement cylinder are disposed opposite to each other, and when the second dial is placed in a lock position, the first concave-convex and the second concave-convex mesh with each other to prevent the first dial from rotating; A dial-type adjustment device configured such that, when the second dial is placed in an unlocked position, the engagement between the first and second concaves and convexes is released, allowing the first dial to rotate freely.

5. The first concave-convex portion has a number of concave portions and a number of convex portions that are alternately arranged one by one around the axis of the dial-type adjustment device, The second irregularity has a large number of recesses and a large number of protrusions arranged alternately one by one in the wide direction of the stop pin, A dial-type adjustment device as described in claim 3 or 4, wherein when the first concave-convex portions and the second concave-convex portions are in an engaged state, the multiple convex portions of the first concave-convex portions are each inserted into the multiple concave portions of the second concave-convex portions, and the multiple convex portions of the second concave-convex portions are each inserted into the multiple concave portions of the first concave-convex portions.

6. 5. The dial-type adjusting device according to claim 3, wherein the stop pin is made of a magnetic material, the operating ring is provided with a magnet, and the stop pin is attracted by the magnetic force of the magnet and comes into contact with the operating ring.

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