JP2006010810A - Sighting telescope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sighting telescope which has a zooming mechanism with which an adjusting angle of sight can be enlarged in order to maintain the sighting accuracy of the sighting telescope stably and also zooming can be performed lightly. <P>SOLUTION: The sighting telescope has a zooming mechanism comprising; a zoom ring 5 that is turnably provided at an outer circumference of the lens barrel 2 of a sighting telescope 1; an annular gear 5A provided on an inner peripheral surface of the zoom lens 5; a circumference-shaped gear 6 that is turnably provided to be concentric with the annular gear 5A and is provided at the inner periphery of the lens barrel 2; a mediation gear 7 provided so as to transmit the rotation of the annular gear 5A to the circumference-shape gear 6 by being interposed between the annular gear 5A and the circumference-shaped gear 6; and a transmission mechanism 13 which transmits the rotation of the circumference-shape gear 6 to a cam cylinder 9 that is turnably provided in the lens barrel 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides an aiming telescope having a zooming mechanism that can stably perform aiming while maintaining the aiming accuracy of the aiming telescope stably.

  Conventionally, in a zooming mechanism of an aiming telescope, an arc-shaped opening groove is provided in a lens barrel in order to transmit the rotation of a zoom ring positioned outside the lens barrel to a cam cylinder positioned in the lens barrel. In addition, the opening groove is opened in a circular arc having a wide angle (for example, an angle of about 300 degrees) with the optical axis of the aiming telescope as the central axis. Further, since this opening groove is located between the zoom system lens and the eyepiece lens and is located in a direction perpendicular to the optical axis, when an external force such as an impact acts on the lens barrel, the opening groove is located. There was a problem that the strength was lowered.

As the sighting telescope that solves this conventional problem, as shown in FIGS. 6 and 7, the present inventor has proposed a sighting telescope having a zooming mechanism that does not require a wide-angle aperture groove (Patent Document). 1). This aiming telescope 51 is provided with a zoom ring 54 attached to a cylindrical body 53 connected to a lens barrel 52 so as to be rotatable with respect to the lens barrel 52, and provided with an annular gear 55 on the inner peripheral surface of the zoom ring 54. In addition, a circumferential gear 58 is provided on the outer peripheral surface of a cam cylinder 56 that is rotatably provided in the lens barrel 52, while an intermediate gear 57 is rotatably provided in a small hole 59 of the cylindrical body 53. By interposing between the annular gear 55 and the circumferential gear 58, the rotation of the zoom ring 54 is transmitted to the cam barrel 56 via the intermediate gear 57, and the aiming telescope 51 is zoomed. Yes.
Japanese Patent No. 2920592

  However, since the aiming telescope 51 described in Patent Document 1 has an aiming adjustment mechanism 60 that deflects the cam barrel 56 and adjusts the aiming, when the cam barrel 56 is deflected during aiming adjustment, the outer periphery of the cam barrel 56 is applied. The meshing between the provided circumferential gear 58 and the intermediate gear 57 changes. Therefore, if the deflection angle of the cam cylinder 56 is set large, the meshing between the circumferential gear 58 and the intermediate gear 57 may become tight or disengaged, making it difficult to perform zooming easily. There was a problem that it was difficult to enlarge.

  Therefore, the present invention provides an aiming telescope having a zooming mechanism that can increase the adjustment angle of the aiming and can easily perform zooming so that the aiming accuracy of the aiming telescope can be stably maintained. is there.

  In order to solve the above-mentioned problems, the present invention is an aiming telescope having a zooming mechanism, which is provided with a zoom ring rotatably provided on the outer periphery of the lens barrel of the aiming telescope, and an inner peripheral surface of the zoom ring. An annular gear, a circumferential gear provided concentrically with the annular gear and rotatably on the inner periphery of the lens barrel, and interposed between the annular gear and the circumferential gear. Zooming comprising an intermediate gear provided to transmit the rotation to the circumferential gear, and a transmission mechanism for transmitting the rotation of the circumferential gear to a cam cylinder rotatably provided in the lens barrel. An aiming telescope having a mechanism is provided.

  Further, according to the present invention, the transmission mechanism includes a groove portion provided in the cam cylinder and a protrusion portion provided in the circumferential gear, and the protrusion portion is displaceably engaged with the groove portion. An aiming telescope according to Item 1, is provided.

  The present invention also provides an aiming telescope according to claim 1 or 2, further comprising an aiming adjustment mechanism for adjusting the aiming by deflecting the cam barrel up and down and / or left and right.

  Further, according to the present invention, the aim adjustment mechanism includes an inner cylinder provided so as to rotatably support the cam cylinder, an R ring provided on an outer periphery of the inner cylinder, and the R ring deflected vertically and horizontally. 4. The aiming telescope according to claim 3, further comprising an R-ring support member provided so as to be supported.

  According to the sighting telescope according to the present invention, the sighting telescope having a zooming mechanism includes a zoom ring rotatably provided on a lens barrel outer periphery of the sighting telescope, and an annular gear provided on an inner peripheral surface of the zoom ring. A circumferential gear provided concentrically with the annular gear and rotatably on the inner periphery of the lens barrel, and rotating the annular gear interposed between the annular gear and the circumferential gear. A zooming mechanism comprising: an intermediate gear provided so as to transmit to the circumferential gear; and a transmission mechanism for transmitting rotation of the circumferential gear to a cam cylinder rotatably provided in the lens barrel. Since the annular gear and the circumferential gear are provided concentrically, the meshing between the annular gear and the intermediate gear and the intermediate gear and the circumferential gear can be kept substantially constant, and zooming can be performed with substantially constant torque. The rotation can be transmitted to the circumferential gear by operating the ring. Further, since the rotation of the circumferential gear is transmitted to the cam cylinder by the transmission mechanism, the cam cylinder can be reliably rotated, and there is an effect that the zooming can be performed lightly and reliably.

  Further, according to the present invention, the transmission mechanism includes a groove portion provided in the cam cylinder and a protrusion portion provided in the circumferential gear, and the protrusion portion is displaceably engaged with the groove portion. With the configuration described in Item 1, even when the cam cylinder is largely deflected for aiming adjustment, the groove provided on the cam cylinder and the protrusion provided on the circumferential gear are displaceably engaged. Therefore, there is an effect that the rotation of the circumferential gear can be reliably transmitted to the cam cylinder to perform zooming.

  According to the present invention, the aiming accuracy of the aiming telescope is stabilized by including the aim adjusting mechanism that adjusts the aim by deflecting the cam barrel up and down and / or right and left. There is an effect that can be maintained.

  Further, according to the present invention, the aim adjustment mechanism includes an inner cylinder provided so as to rotatably support the cam cylinder, an R ring provided on an outer periphery of the inner cylinder, and the R ring deflected vertically and horizontally. The cam ring is largely deflected because the cam ring is supported by the R ring and the R ring support member so that the cam cylinder can be deflected by having an R ring support member provided so as to be supported. It is possible to widen the adjustment range of the aim from near to far.

Embodiments of the present invention will be described based on the examples shown in FIGS.
Reference numeral 1 in the drawing denotes an aiming telescope according to the present invention, and a zooming mechanism of the aiming telescope 1 is provided on a zoom ring 5 that is rotatably provided on the outer periphery of the lens barrel 2 and an inner peripheral surface of the zoom ring 5. An annular gear 5A, a circumferential gear 6 concentric with the annular gear 5A and rotatably provided on the inner periphery of the lens barrel 2, and between the annular gear 5A and the circumferential gear 6. The intermediate gear 7 is provided so as to transmit the rotation of the annular gear 5A to the circumferential gear 6 and the cam cylinder 9 provided rotatably in the lens barrel 2. The transmission mechanism 13 is configured to transmit the rotation of the gear 6.

  As shown in FIGS. 1 and 2, the lens barrel 2 includes a lens barrel body 2A and a cylindrical body 2B provided continuously to the lens barrel body 2A. The cylindrical body 2B is provided with a substantially cross-shaped small hole 3, and the mediating gear 7 is provided so as to be rotatable by being horizontally disposed in the small hole 3 with its axis parallel to the optical axis N of the aiming telescope 1. A part of the tooth portion of the gear 7 is configured to slightly protrude from the outer peripheral surface and the inner peripheral surface of the cylindrical body 2B.

  In the illustrated embodiment, the zoom ring 5 is rotatably provided on the outer periphery of the cylindrical body 2 </ b> B of the lens barrel 2. Further, the annular gear 5A is provided by being screwed to a screw portion on the inner periphery of the zoom ring 5, fixed to the zoom ring 5 by a gear presser 5B, and meshed with the intermediate gear 7 provided on the cylindrical body 2B. The intermediate gear 7 is configured to rotate when the zoom ring 5 is rotated.

  As shown in FIGS. 1 and 2, the circumferential gear 6 includes a gear portion 6A, a sliding surface 6B extending in the direction of the optical axis N, and a protruding portion 6C protruding in the inner peripheral direction. The sliding surface 6B slides on a sliding surface 2C provided concentrically with the annular gear 5A on the inner periphery of the cylindrical body 2B, so that the circumferential gear 6 is concentric with the annular gear 5A and on the cylindrical body 2B. On the other hand, it is provided so as to be rotatable. Further, the circumferential gear 6 is engaged with an intermediate gear 7 provided on the cylinder 2B, and the rotation of the annular gear 5A is transmitted to the circumferential gear 6 via the intermediate gear 7. It is. With this configuration, the annular gear 5A and the circumferential gear 6 can always be rotated concentrically, and the meshing between the annular gear 5A and the intermediate gear 7 and the intermediate gear 7 and the circumferential gear 6 is made substantially constant. Can keep.

As shown in FIGS. 1 to 4, in the lens barrel body 2A, a cam cylinder 9 is rotatably provided on an inner cylinder 8 provided in the lens barrel body 2A. The cam cylinder 9 is provided with a groove portion 9C, and a protrusion 6C provided on the circumferential gear 6 is displaceably engaged with the groove portion 9C to transmit the rotation of the circumferential gear 6 to the cam cylinder 9. The transmission mechanism 13 is configured. With this configuration, even if the cam cylinder 9 is deflected for aiming adjustment, the engagement between the projection 6C and the groove 9C can be maintained, and the rotation of the circumferential gear 6 can be transmitted to the cam cylinder 9. it can.
The transmission mechanism is not limited to the embodiment shown in the figure, and has a configuration in which a protrusion is provided on the outer periphery of the cam cylinder 9, a groove is provided on the inner periphery of the circumferential gear 6, and the protrusion is displaceably engaged with the groove. It is also possible to do.

Two helical cam holes 9A and 9B are provided on the peripheral side surface of the cam cylinder 9 at an angle that makes a slight inclination with respect to the optical axis N.
In addition, a guide hole 8A is provided in the inner cylinder 8 in parallel with the optical axis N, and zoom system lenses 10A and 10B are provided so as to be movable via the supporting tools 11A and 11B. The screw 12A of the support 11A is inserted through the overlapping portion of the cam hole 9A and the guide hole 8A, and the zoom lens 10A is moved according to the movement of the overlapping portion of the cam hole 9A and the guide hole 8A when the cam cylinder 9 is rotated. Is going to move. Similarly, the screw 12B of the support 12B is inserted through the overlapping portion between the cam hole 9B and the guide hole 8A.

  With the zooming mechanism configured as described above, the rotation of the zoom ring 5 is transmitted to the circumferential gear 6 via the intermediate gear 7, and the rotation of the circumferential gear 6 is further transmitted to the cam cylinder 9 via the transmission mechanism 13. Is done. The rotation of the cam barrel 9 is converted into a movement parallel to the optical axis N of the zoom lenses 10A and 10B via the screws 12A and 12B and the supports 11A and 11B, and zooming of the aiming telescope 1 acts. . In addition, since the rotation angle of the zoom ring 5 is not limited, the cam holes 9A and 9B of the cam cylinder 9 can be provided at a steep angle with respect to the optical axis N, and the zoom ring 5 can be lightened with a small torque. Can be rotated.

  As shown in FIG. 1, FIG. 4 and FIG. 5, in the approximate center of the barrel main body 2A, the direction of the barrel when the sighting telescope 1 is mounted on the barrel and the optical axis N of the sighting telescope 1 are actually fired. A sight adjustment mechanism 20 for adjusting the sight is provided.

  In the illustrated embodiment, the aiming adjustment mechanism 20 moves the inner cylinder 8 provided to rotatably support the cam cylinder 9, the R ring 24 provided on the outer periphery of the inner cylinder 8, and the R ring 24 up and down. It has an inner cylinder support mechanism 26 composed of an R-ring support member 25 provided on the cylinder 2B so as to be supported so as to be deflectable in the left-right direction. The R ring 24 has a shape in which a sphere is cut out in two parallel planes sandwiching the center thereof, and is provided at the end of the inner cylinder 8 on the eyepiece 4 side. The R-ring support member 25 includes a split ring 25A fixed to the cylinder 2B and a presser ring 25B that is screwed to the inner periphery of the split ring 25A. The R-ring 24 includes the split ring 25A and the presser ring 25B. Is to be sandwiched. The inner cylinder support mechanism 26 is preferably provided in the vicinity of the transmission mechanism 13 so that the displacement of the inner cylinder 8 in the transmission mechanism 13 can be reduced.

  Further, the aim adjustment mechanism 20 is opposed to the right and left aiming adjustment ring 21 for adjusting the declination, the upper and lower aiming adjustment ring 22 capable of adjusting the declination, and the left and right aiming adjustment ring 21 and the upper and lower aiming adjustment ring 22 with respect to the optical axis N And a coil spring 23 provided at a position to be operated. A support cylinder 16 having an intermediate lens 15 is connected to the end of the inner cylinder 8 on the objective lens 14 side, and the support cylinder 16 is pressed by turning the left and right aiming adjustment rings 21 and the vertical aiming adjustment ring 22. By operating, the inner cylinder 8 can be deflected vertically and horizontally around the inner cylinder support mechanism 26. By deflecting the inner cylinder 8, the zoom lenses 10A and 10B and the cam cylinder 9 provided on the inner cylinder 8 can also be deflected to adjust the aim.

1 is a partially longitudinal side view showing a zooming mechanism of an embodiment of an aiming telescope of the present invention. The partial cutaway perspective view which shows the principal part of the one Example. The partial cutaway perspective view which shows the inside of the one Example. The partial cutaway perspective view which shows the one Example. The AA sectional view taken on the line of the one Example. FIG. 6 is a partially longitudinal side view showing a zooming mechanism of a conventional aiming telescope. BB sectional drawing of the conventional aiming telescope.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sighting telescope 2 Lens barrel 2A Lens barrel body 2B Cylindrical body 2C Sliding surface 3 Small hole 4 Eyepiece portion 5 Zoom ring 5A Annular gear 5B Gear presser 6 Circumferential gear 6A Gear portion 6B Sliding surface 6C Projection portion 7 Intermediary gear 8 Inner cylinder 8A Guide hole 9 Cam cylinder 9A, 9B Cam hole 9C Groove 10A, 10B Zoom lens 11A, 11B Support 12A, 12B Screw 13 Transmission mechanism 14 Objective lens 15 Intermediate lens 16 Support cylinder 20 Aiming adjustment mechanism 21 Left and right Aiming adjustment ring 22 Vertical aiming adjustment ring 23 Coil spring 24 R ring 25 R ring support member 25 A Split ring 25 B Presser ring 26 Inner cylinder support mechanism 51 Aiming telescope 52 Lens barrel 53 Cylinder 54 Zoom ring 55 Ring gear 56 Cam cylinder 57 Mediation gear 58 Circumferential gear 59 Small hole N Optical axis

Claims (4)

  An aiming telescope having a zooming mechanism, a zoom ring rotatably provided on the outer periphery of the lens barrel of the aiming telescope, an annular gear provided on an inner peripheral surface of the zoom ring, and a concentric core with the annular gear; A circumferential gear provided rotatably on the inner periphery of the lens barrel, and interposed between the annular gear and the circumferential gear so as to transmit the rotation of the annular gear to the circumferential gear. A sighting telescope having a zooming mechanism comprising an intermediate gear provided on the lens barrel and a transmission mechanism for transmitting the rotation of the circumferential gear to a cam cylinder rotatably provided in the lens barrel.   The aiming according to claim 1, wherein the transmission mechanism includes a groove provided in the cam cylinder and a protrusion provided in the circumferential gear, and the protrusion is displaceably engaged with the groove. telescope.   The aiming telescope according to claim 1, further comprising an aiming adjustment mechanism that adjusts the aiming by deflecting the cam barrel up and down and / or right and left. The aiming adjustment mechanism supports an inner cylinder provided to rotatably support the cam cylinder, an R ring provided on the outer periphery of the inner cylinder, and an R ring that can be deflected vertically and horizontally. The aiming telescope according to claim 3, further comprising an R-ring support member provided.

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