CN112526740B - Large-stroke high-precision zero adjustment mechanism - Google Patents
Large-stroke high-precision zero adjustment mechanism Download PDFInfo
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- CN112526740B CN112526740B CN202011586369.7A CN202011586369A CN112526740B CN 112526740 B CN112526740 B CN 112526740B CN 202011586369 A CN202011586369 A CN 202011586369A CN 112526740 B CN112526740 B CN 112526740B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
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Abstract
The invention discloses a large-stroke high-precision zero adjustment mechanism which comprises an adjustment shaft, an adjustment support, an adjustment screw sleeve, an anti-rotation mechanism and a dustproof mechanism, wherein the dustproof mechanism is installed on one side of the adjustment support, and the anti-rotation mechanism is installed in installation holes on two sides of the adjustment support; the adjusting screw sleeve is arranged in the middle of the adjusting support through a boss, the adjusting shaft is arranged in the adjusting screw sleeve, and a concave plane is arranged in the middle of the adjusting shaft; the bottom of the adjusting support is provided with a limiting plate, and the edge of the limiting plate is tightly attached to the concave plane in the middle of the adjusting shaft. The adjusting range of the zero adjusting mechanism can reach more than 10mm, and the adjusting shaft does not rotate during adjustment, so that higher adjusting precision is ensured, and high reliability is realized.
Description
Technical Field
The invention relates to the field of optics, in particular to a large-stroke high-precision zero adjustment mechanism which is mainly used for zero adjustment of a remote optical sight.
Background
Currently, there are many ways for adjusting the zero position of various optical sights, most of which are realized by moving the reticle, and the mechanism for promoting the movement of the reticle generally adopts a thread pair form, i.e. a fixed thread sleeve, and a screw rotates and moves against the reticle frame. In order to ensure the adjustment precision and the reliability, the adjustment range of the adjusting mechanism is small, generally not more than 4mm, and the adjustment precision is high. Therefore, such adjustment methods are used in short focus sights, but cannot eliminate the precision change caused by the rotation of the screw.
The long rectangular sighting telescope has long observation distance, so that the focal length of an optical system is long, and the corresponding zero adjustment range is large. Therefore, it is necessary to develop a large-stroke high-precision zero adjustment mechanism suitable for a remote sight, so that the adjustment range can reach more than 10mm, and the adjustment shaft does not rotate during adjustment, thereby ensuring higher adjustment precision and realizing high reliability.
Disclosure of Invention
In view of the above problems, the present invention provides a large-stroke high-precision zero adjustment mechanism for zero adjustment of a remote sight, so as to achieve large stroke, high precision and high reliability of zero adjustment.
The invention is realized by the following technical scheme: a large-stroke high-precision zero adjustment mechanism is characterized by comprising an adjustment shaft, an adjustment support, an adjustment screw sleeve, an anti-rotation mechanism and a dustproof mechanism, wherein a mounting seat is arranged on one side of the adjustment support, and the dustproof mechanism is arranged in the mounting seat; mounting holes are respectively formed in two sides of the adjusting support, and anti-rotation mechanisms are mounted in the mounting holes in the two sides through screws; a second thread is arranged on the inner edge of the adjusting screw sleeve, a whole circle of external teeth are arranged on the upper part of the outer edge of the adjusting screw sleeve, and the number of the external teeth is even; the top of the adjusting screw sleeve is provided with a straight groove, the lower part of the adjusting screw sleeve is provided with a boss, the adjusting screw sleeve is arranged in the middle of the adjusting support through the boss, a pressing ring is arranged on the boss, the lower end face of the adjusting screw sleeve is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the sealing ring is positioned between the boss and the adjusting support; the outer edge of the upper part of the adjusting shaft is provided with a first thread, the first thread is meshed with a second thread so as to install the adjusting shaft in the adjusting screw sleeve, and the first thread and the second thread form a thread pair; a concave plane is arranged in the middle of the adjusting shaft; and a limiting plate is arranged at the bottom of the adjusting support, and the edge of the limiting plate is tightly attached to the concave plane in the middle of the adjusting shaft.
Further, prevent changeing the mechanism and include steel ball, locking apron, spring two, top cover, locking apron one side is provided with a cylinder section of thick bamboo, installs spring two and top cover in the cylinder section of thick bamboo, the tail end and the contact of spring two of top cover, the head end card of top cover is gone into between two outer teeth on the outer edge of adjustment swivel nut.
Furthermore, a guide groove is formed in the upper edge of the top sleeve, a round hole is formed in the upper portion of the cylindrical barrel, the round hole corresponds to the guide groove in position, a steel ball is placed in the guide groove, and the upper portion of the steel ball is located in the round hole.
Furthermore, dustproof mechanism includes spring one, apron and screw rod, the screw rod is installed in the mount pad, and it has spring one to cluster on the screw rod that is located the mount pad, and the bottom face of screw rod is equipped with fourth of the twelve earthly branches and dashes, the apron passes through the screw rod and installs the top at the adjustment support.
Further, the lower part of the cover plate is provided with a step.
Compared with the prior art, the invention has the advantages that:
1. the zero adjustment mechanism can be applied to a zero adjustment mechanism of a long-distance optical sighting device, realizes the zero adjustment with large stroke and high precision by skillfully changing the principle of a thread pair and combining the design of a reliable limiting and rotation preventing mechanism, and has the advantages of simple structure, large stroke, high precision and good reliability.
2. The method has wide application range, and can be used for zero adjustment of the remote optical sight and also can be used for an externally-mounted setting watch of the sight.
3. Through setting up limiting plate and sunken plane for the action of adjusting the axle and not producing the rotation during adjustment, thereby eliminated among the current product because of the rotatory precision change that brings of screw rod.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a front view of the present invention;
FIG. 3 is a side view in half section of the present invention;
FIG. 4 is a schematic view of the adjustment mount;
FIG. 5 is a schematic view of the adjusting screw insert;
FIG. 6 is a schematic view of the structure of the adjustment shaft;
FIG. 7 is an exploded view of the anti-rotation mechanism;
fig. 8 is a schematic structural view of the top cover.
In the figure: 1. the adjusting device comprises an adjusting shaft, 101, a first thread, 102, a plane, 2, an adjusting support, 201, an installing seat, 202, an installing hole, 3, a first spring, 4, a cover plate, 5, a screw rod, 501, a mortise punch, 6, an adjusting screw sleeve, 601, a straight groove, 602, external teeth, 603, a second thread, 604, a sealing groove, 605, a boss, 7, a pressing ring, 8, a steel ball, 9, a locking cover plate, 901, a cylindrical barrel, 902, a round hole, 10, a second spring, 11, a top sleeve, 12, a sealing ring, 13, a limiting plate, 14 and a guide groove.
Detailed Description
The following detailed description of the embodiments of the invention is provided in conjunction with the drawings, in which:
as shown in fig. 1, 2, 3, and 4, the large-stroke high-precision zero adjustment mechanism includes an adjustment shaft 1, an adjustment support 2, an adjustment screw sleeve 6, an anti-rotation mechanism, and a dustproof mechanism, wherein a mounting seat 201 is provided on one side of the adjustment support 2, the dustproof mechanism is installed in the mounting seat 201, mounting holes 202 are respectively provided on two sides of the adjustment support 2, and the anti-rotation mechanism is installed in the mounting holes 202 on two sides through screws.
As shown in fig. 1, 2 and 5, the inner edge of the adjusting screw sleeve 6 is provided with a second thread 603, the upper part of the outer edge of the adjusting screw sleeve 6 is provided with a full circle of external teeth 602, and the number of teeth of the external teeth 602 is even; the top of the adjusting threaded sleeve 6 is provided with a straight groove 601, the lower part of the adjusting threaded sleeve 6 is provided with a boss 605, and the adjusting threaded sleeve 6 is arranged in the middle of the adjusting support 2 through the boss 605; the boss 605 is provided with a pressing ring 7, the adjusting screw sleeve 6 is limited by the pressing ring 7, so that the adjusting screw sleeve 6 can freely rotate in the adjusting support 2 and does not axially jump, the lower end face of the adjusting screw sleeve 6 is provided with a sealing groove 604, a sealing ring 12 is arranged in the sealing groove 604, and the sealing ring 12 is positioned between the boss 605 and the adjusting support 2.
As shown in fig. 2, 3 and 6, the outer edge of the upper part of the adjusting shaft 1 is provided with a first thread 101, the first thread 101 is meshed with a second thread 603 so as to install the adjusting shaft 1 in the adjusting screw sleeve 6, and the first thread 101 and the second thread form a thread pair; the middle part of the adjusting shaft 1 is provided with a concave plane 102, and the length of the plane 102 is the adjusting stroke range. The bottom of the adjusting support 2 is provided with a limiting plate 13, and the edge of the limiting plate 13 is tightly attached to a concave plane 102 in the middle of the adjusting shaft 1, so that the rotation and stroke range of the adjusting shaft 1 is limited.
As shown in fig. 3, 7 and 8, the anti-rotation mechanism comprises a steel ball 8, a locking cover plate 9, a second spring 10 and a top sleeve 11, a cylindrical barrel 901 is arranged on one side of the locking cover plate 9, the second spring 10 and the top sleeve 11 are installed in the cylindrical barrel 901, the tail end of the top sleeve 11 is in contact with the second spring 10, and the head end of the top sleeve 11 is clamped between two outer teeth 602 on the outer edge of the adjusting screw sleeve 6. Guide way 14 has been seted up along going up of top cover 11, round hole 902 has been seted up on a cylinder section of thick bamboo 901 upper portion, the position and the guide way 14 of round hole 902 correspond, steel ball 8 has been placed in the guide way 14, and the upper portion of steel ball 8 is located round hole 902, above-mentioned structural design can prevent that top cover 11 from taking place to deflect, thereby make top cover 11 can only carry out the back-and-forth movement, the card goes into between two external teeth 602 of adjustment swivel nut 6, it is spacing to carry out adjustment swivel nut 6 adjusted, prevent that adjustment swivel nut 6 from rotating, avoid it to take place to deflect and lead to the precision of aiming the utensil to change.
As shown in fig. 1 and 2, the dustproof mechanism includes a first spring 3, a cover plate 4 and a screw 5, the screw 5 is installed in the installation seat 201, the first spring 3 is connected to the screw 5 in the installation seat 201 in series, a punch 501 is arranged on the bottom end surface of the screw 5, and the punch 501 can prevent the screw 5 from being removed from the installation seat 201 of the adjustment support 2. The cover plate 4 is mounted on the top end of the adjusting support 2 through a screw 5. The step 401 is arranged on the lower portion of the cover plate 4, when the cover plate 4 is closed at the top end of the adjusting support 2, the step 401 is located in the adjusting support 2, and therefore the dustproof effect of the adjusting support 2 is better.
The working principle is as follows:
the adjusting screw sleeve 6 is arranged in the adjusting support 2, the adjusting screw sleeve 6 is limited by a pressing ring 7, and the adjusting screw sleeve 6 is ensured to rotate freely and has no jump. The second thread 603 inside the adjusting screw sleeve 6 is threadedly engaged with the first thread 101 outside the adjusting shaft 1, thereby mounting the adjusting shaft 1 inside the adjusting screw sleeve 6. The edge of the limit plate 13 at the bottom of the adjusting support 2 is tightly attached to the concave plane 102 in the middle of the adjusting shaft 1, so that the rotation and stroke range of the adjusting shaft 1 is limited. The steel ball 8, the locking cover plate 9, the second spring 10 and the top sleeve 11 form an anti-rotation mechanism which is respectively fastened on two side surfaces of the adjusting support 2 by screws and used for preventing the adjusting threaded sleeve 6 from rotating, and the cover plate 4 is fastened by a screw rod 5 with the first spring 3 and used for preventing dust of the adjusting mechanism.
During zero adjustment, the screw rod 5 is unscrewed, the cover plate 4 is rotated, the adjusting screw sleeve 6 is exposed, the screwdriver is inserted into the straight groove 601 at the top of the adjusting screw sleeve 6 to drive the adjusting shaft 1 to move up and down, and the dividing assembly moves up and down due to the fact that the adjusting shaft 1 is connected with the dividing assembly, so that zero adjustment is achieved. In the rotation process of the adjusting screw sleeve 6, the rotation prevention mechanism can ensure that the adjusting screw sleeve 6 does not rotate due to vibration impact, and zero moving is generated. After the zero position is adjusted, the cover plate 4 is straightened, and the screw 5 is screwed down to complete the zero position adjustment.
The length of the thread of the second thread 603 determines the maximum value of the stroke, the length of the concave plane 102 in the middle of the adjusting shaft 1 determines the stroke range, and the stroke adjusting range can reach more than 10mm by combining the two, so that the large stroke adjustment of the remote sighting telescope is realized. If the matching length of the first thread 101 and the second thread 603 is 5mm, and the length of the second thread 603 is 20mm, the maximum stroke range is 15 mm; if the length of the concave plane 102 in the middle of the adjusting shaft 1 is 13mm and the thickness of the limiting plate is 1mm, the adjusting stroke is 11 mm.
Under the condition that the optical system is the same, the adjusting screw sleeve 6 rotates by one tooth 602, and the adjusting screw sleeve 6 and the thread byproduct of the adjusting shaft 1 move relatively, so that the adjusting shaft 1 is driven to move axially. That is, the adjustment of the accuracy is determined by the amount of movement of the adjustment shaft 1 corresponding to each rotation of the adjustment screw 6 by one external tooth 602. The moving distance is the ratio of the screw pitch to the total number of teeth, the ratio of the moving distance to the focal length value of the optical system is the zero position adjustment precision, and generally can reach 0.1 mil, so that the high-precision adjustment of the remote sighting telescope is realized. If the number of teeth of the outer edge teeth 602 of the adjusting screw sleeve 6 is 60, and the pitch of the second thread 603 is 0.5, the single tooth rotates to enable the moving distance of the adjusting shaft 1 along the axis to be 0.0083mm (0.5/60), the ratio of the moving distance to the focal length value of the optical system is the zero position adjusting precision, and if the focal length value of the optical system is 100, the adjusting precision is 0.083 milliradian (0.0083/100), namely the zero position adjusting precision is 0.08 mil.
Claims (5)
1. The large-stroke high-precision zero-position adjusting mechanism is characterized by comprising an adjusting shaft (1), an adjusting support (2), an adjusting threaded sleeve (6), an anti-rotation mechanism and a dustproof mechanism, wherein a mounting seat (201) is arranged on one side of the adjusting support (2), and the dustproof mechanism is arranged in the mounting seat (201); mounting holes (202) are respectively formed in two sides of the adjusting support (2), and anti-rotation mechanisms are mounted in the mounting holes (202) in the two sides through screws; a second thread (603) is arranged on the inner edge of the adjusting screw sleeve (6), a whole circle of external teeth (602) are arranged on the upper part of the outer edge of the adjusting screw sleeve (6), and the number of teeth of the external teeth (602) is even; the top of the adjusting threaded sleeve (6) is provided with a straight groove (601), the lower part of the adjusting threaded sleeve (6) is provided with a boss (605), the adjusting threaded sleeve (6) is installed in the middle of the adjusting support (2) through the boss (605), a pressing ring (7) is arranged on the boss (605), the lower end face of the adjusting threaded sleeve (6) is provided with a sealing groove (604), a sealing ring (12) is installed in the sealing groove (604), and the sealing ring (12) is located between the boss (605) and the adjusting support (2); the outer edge of the upper part of the adjusting shaft (1) is provided with a first thread (101), the first thread (101) is meshed with a second thread (603) so as to install the adjusting shaft (1) in the adjusting screw sleeve (6), and the first thread and the second thread form a thread pair; a concave plane (102) is arranged in the middle of the adjusting shaft (1); a limiting plate (13) is installed at the bottom of the adjusting support (2), and the edge of the limiting plate (13) is tightly attached to a concave plane (102) in the middle of the adjusting shaft (1).
2. The large-stroke high-precision zero adjustment mechanism is characterized in that the anti-rotation mechanism comprises a steel ball (8), a locking cover plate (9), a second spring (10) and a top sleeve (11), a cylindrical barrel (901) is arranged on one side of the locking cover plate (9), the second spring (10) and the top sleeve (11) are installed in the cylindrical barrel (901), the tail end of the top sleeve (11) is in contact with the second spring (10), and the head end of the top sleeve (11) is clamped between two outer teeth (602) on the outer edge of the adjusting threaded sleeve (6).
3. The large-stroke high-precision zero adjustment mechanism is characterized in that a guide groove (14) is formed in the upper edge of the top sleeve (11), a round hole (902) is formed in the upper portion of the cylindrical barrel (901), the round hole (902) corresponds to the guide groove (14), a steel ball (8) is placed in the guide groove (14), and the upper portion of the steel ball (8) is located in the round hole (902).
4. The large-stroke high-precision zero adjustment mechanism is characterized in that the dustproof mechanism comprises a first spring (3), a cover plate (4) and a screw (5), the screw (5) is installed in the installation seat (201), the first spring (3) is connected with the screw (5) in the installation seat (201) in series, a mortise punch (501) is arranged on the bottom end face of the screw (5), and the cover plate (4) is installed at the top end of the adjustment support (2) through the screw (5).
5. A large stroke high accuracy zero adjustment mechanism as claimed in claim 4 wherein the lower part of the cover plate (4) is provided with a step (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011586369.7A CN112526740B (en) | 2020-12-29 | 2020-12-29 | Large-stroke high-precision zero adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011586369.7A CN112526740B (en) | 2020-12-29 | 2020-12-29 | Large-stroke high-precision zero adjustment mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN112526740A CN112526740A (en) | 2021-03-19 |
| CN112526740B true CN112526740B (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011586369.7A Active CN112526740B (en) | 2020-12-29 | 2020-12-29 | Large-stroke high-precision zero adjustment mechanism |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001177754A (en) * | 1999-12-20 | 2001-06-29 | Sony Corp | Flange back adjustment mechanism |
| WO2008108240A1 (en) * | 2007-03-07 | 2008-09-12 | First Mechanical Design Corporation | Optical element holder |
| JP2011164365A (en) * | 2010-02-10 | 2011-08-25 | First Mechanical Design Corp | Optical element holder |
| WO2012072010A1 (en) * | 2010-11-29 | 2012-06-07 | 合肥市百胜科技发展股份有限公司 | Outlet guide fitting for diameter measuring instrument |
| WO2020001079A1 (en) * | 2017-12-15 | 2020-01-02 | 西安华科光电有限公司 | Led mounting base, adjusting mechanism having led mounting base, and internal red dot sight having adjusting mechanism |
| CN210833246U (en) * | 2019-11-11 | 2020-06-23 | 湖南华南光电(集团)有限责任公司 | Partition adjusting locking mechanism |
-
2020
- 2020-12-29 CN CN202011586369.7A patent/CN112526740B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001177754A (en) * | 1999-12-20 | 2001-06-29 | Sony Corp | Flange back adjustment mechanism |
| WO2008108240A1 (en) * | 2007-03-07 | 2008-09-12 | First Mechanical Design Corporation | Optical element holder |
| JP2011164365A (en) * | 2010-02-10 | 2011-08-25 | First Mechanical Design Corp | Optical element holder |
| WO2012072010A1 (en) * | 2010-11-29 | 2012-06-07 | 合肥市百胜科技发展股份有限公司 | Outlet guide fitting for diameter measuring instrument |
| WO2020001079A1 (en) * | 2017-12-15 | 2020-01-02 | 西安华科光电有限公司 | Led mounting base, adjusting mechanism having led mounting base, and internal red dot sight having adjusting mechanism |
| CN210833246U (en) * | 2019-11-11 | 2020-06-23 | 湖南华南光电(集团)有限责任公司 | Partition adjusting locking mechanism |
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| CN112526740A (en) | 2021-03-19 |
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