CN216210156U - Zooming hand wheel rotation adjusting mechanism - Google Patents
Zooming hand wheel rotation adjusting mechanism Download PDFInfo
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- CN216210156U CN216210156U CN202122372197.XU CN202122372197U CN216210156U CN 216210156 U CN216210156 U CN 216210156U CN 202122372197 U CN202122372197 U CN 202122372197U CN 216210156 U CN216210156 U CN 216210156U
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- steel band
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Abstract
The utility model discloses a zoom hand wheel rotation adjusting mechanism which comprises a cylindrical cam, a main body mirror tube and a focusing hand wheel, wherein the cylindrical cam, the main body mirror tube and the focusing hand wheel are sequentially sleeved and connected, the cylindrical cam is provided with two curve grooves, the focusing hand wheel also comprises a spring steel band, one end of the spring steel band is riveted and connected with a steel band rivet, the focusing hand wheel is provided with a rivet fixing straight groove, the steel band rivet is arranged in the rivet fixing straight groove, the rivet fixing straight groove can clamp the steel band rivet, the other end of the spring steel band penetrates through the main body mirror tube and is connected with the cylindrical cam through a steel band screw, the cylindrical cam and the main body mirror tube are both provided with steel band guide pieces, a steel band guide groove is formed between the contour curve of the cylindrical cam and the steel band guide pieces, and the steel band guide groove is also formed between the contour curve of the main body mirror tube and the steel band guide pieces, and is used for guiding the spring steel band to move smoothly. The utility model realizes the zooming by driving the cylinder cam of the zooming mechanism to rotate by the spring steel strip, improves the rigidity of the main body mirror tube and eliminates the weak hidden trouble at the slotting position of the zooming notch of the main body mirror tube.
Description
Technical Field
The utility model relates to the technical field of optical zooming, in particular to a zooming hand wheel rotation adjusting mechanism.
Background
In an optical instrument, the function of zooming is added as a main way to improve the grade and performance of a product, and a cylindrical cam mechanism with two curved grooves is usually used for realizing the zooming process, so that the mechanism is a key part for ensuring the zooming performance. As described in the paper "improved design of a zoom transmission mechanism for a sighting telescope for a high zoom ratio gun" ("science and technology expectation", 2016 (period 022)), how to rotate a cylindrical cam is to mill a notch on a main body telescope of most of the zoom transmission mechanisms for the sighting telescope for the zoom guns at home and abroad at present, one section of a connecting pin is clamped on a straight slot of an inner hole of a focusing hand wheel, and the other end of the connecting pin penetrates through the notch of the main body telescope and is connected to the cylindrical cam (on which a zoom curve slot and a compensation curve slot are processed). When the focusing hand wheel rotates, the cylinder boss is driven to do rotary motion along the axis, and simultaneously the zoom group and the compensation group lenses are driven to do axial movement along the central axis to change the distance between the two groups of lenses. The larger the zoom ratio is, the larger the distance moved by the zoom group lens is, and the larger the angle of the notch groove is (otherwise, the pressure angle is increased). When the gun sight is used in shooting, after the gun sight receives the great backseat impact force of the gun, the strength and the stability of a product can be greatly reduced, the main body mirror tube is easy to deform and break, and potential safety hazards can be brought when shooting.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: aiming at the problems of low strength and rigidity of a main body lens tube and large rotation angle (large zoom ratio) and easy breakage of the conventional focusing hand wheel rotation adjusting mechanism in the prior art, the utility model provides the focusing hand wheel rotation adjusting mechanism.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a zoom hand wheel rotation adjusting mechanism comprises a cylindrical cam, a main body mirror tube and a focusing hand wheel which are sequentially sleeved and connected, wherein the cylindrical cam is provided with two curve grooves, and the zoom hand wheel rotation adjusting mechanism also comprises a spring steel belt,
one end of the spring steel band is riveted with a steel band rivet, the focusing hand wheel is provided with a rivet fixing straight slot, the steel band rivet is arranged in the rivet fixing straight slot, the rivet fixing straight slot can clamp the steel band rivet,
the other end of the spring steel belt passes through the main body mirror tube and is connected with the cylindrical cam through a steel belt screw,
the spring steel belt is characterized in that the cylindrical cam and the main body mirror tube are respectively provided with a steel belt guide sheet, a steel belt guide groove is formed between the contour curve of the cylindrical cam and the steel belt guide sheet, a steel belt guide groove is also formed between the contour curve of the main body mirror tube and the steel belt guide sheet, and the steel belt guide groove is used for guiding the spring steel belt to move smoothly.
The utility model realizes the zooming by driving the cylinder cam of the zooming mechanism to rotate by the spring steel strip, improves the rigidity and the strength of the main body mirror tube and the stability of a product under the condition of large rotating angle (large zooming ratio), and eliminates the weak hidden trouble at the grooving position of the zooming notch of the main body mirror tube. By arranging the steel belt guide sheet, the movement smoothness of the spring steel belt is improved, and the variable-focus hand wheel rotation adjusting mechanism is space-saving, convenient to install, high in transmission reliability and relatively low in cost.
As a preferable scheme of the utility model, the inner walls of the main body mirror tube and the focusing hand wheel are both provided with cylindrical hole chutes, and the spring steel belt moves in the cylindrical hole chutes in a penetrating way.
As a preferable aspect of the present invention, the axial width of the cylindrical hole sliding groove is equal to the width of the spring steel strip, so that the spring steel strip is prevented from moving in the axial direction.
As a preferable scheme of the utility model, the radial depth of the cylindrical hole sliding groove is equal to the thickness of the spring steel strip, so that the spring steel strip is prevented from moving along the radial direction.
As a preferable scheme of the utility model, the contour line of the cylindrical cam at the steel strip guide groove is composed of more than three broken lines, and the contour line of the main body mirror tube at the steel strip guide groove is composed of more than three broken lines, so that the curvature radius of the steel strip guide groove is increased, the break angle is avoided, the intermittence is reduced, and the steel strip guide groove can be attached to the spring steel strip as much as possible.
As a preferable scheme of the utility model, the radial clearance of the steel strip guide groove is 1.1-1.5 times of the thickness of the spring steel strip, so that the spring steel strip is prevented from moving.
As a preferable scheme of the utility model, the width of the rivet fixing straight slot is equal to the diameter of the steel belt rivet, so that the intermittent idle-return phenomenon is prevented when the focusing is rotated.
As the preferable scheme of the utility model, one end of the spring steel belt is connected with the steel belt rivet in a riveting way and then is connected in a welding way, so that the firm connection is ensured.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
the utility model realizes the zooming by driving the cylinder cam of the zooming mechanism to rotate by the spring steel strip, improves the rigidity of the main body mirror tube under the condition of large rotating angle (large zooming ratio), and eliminates the weak hidden trouble at the slotting position of the zooming notch of the main body mirror tube. The contour lines of the cylindrical cam and the main body mirror tube at the steel strip guide groove are optimized; optimizing the sizes of the cylindrical hole sliding groove, the steel strip guide groove and the rivet fixing straight groove; and the steel belt guide sheets are added, so that the moving smoothness of the spring steel belt is improved, and the strength and the stability of the product are further improved.
The utility model provides a zoom hand wheel rotation adjusting mechanism which saves space, is convenient to install, has high transmission reliability and relatively low cost.
Drawings
FIG. 1 is a schematic view of the high zoom ratio gun scope of the present invention.
Fig. 2 is a cross-sectional view a-a of fig. 1 (after rotation of the hand wheel).
Fig. 3 is a cross-sectional view a-a of fig. 1 (before rotation of the hand wheel).
Fig. 4 is a front view of a spring steel band according to the present invention.
FIG. 5 is a schematic structural diagram of the main body lens tube of the present invention.
Fig. 6 is a sectional view B-B of fig. 5.
Fig. 7 is a view in the direction C of fig. 6.
Fig. 8 is a schematic structural view of the cylinder cam according to the present invention.
Fig. 9 is a view from direction D of fig. 8.
Fig. 10 is a three-dimensional schematic view of a barrel cam according to the present invention.
Icon: 1-cylindrical cam, 2-main body lens tube, 3-focusing hand wheel, 4-spring steel band, 5-steel band rivet, 6-rivet fixing straight slot, 7-steel band screw, 8-steel band guide sheet, 9-steel band guide slot, 10-curve slot, 11-cylindrical hole sliding slot, 12-screw hole, 13-objective lens group, 14-adjusting group, 15-compensating lens group, 16-zoom lens group, 17-elastic press ring, 18-annular press ring and 19-eyepiece lens group.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Example 1
As shown in fig. 1, the sighting telescope for a high zoom ratio gun comprises an objective lens group 13, an adjusting group 14, a compensating lens group 15, a zoom lens group 16, a rotary adjusting mechanism (comprising a cylindrical cam 1, a main body lens tube 2, a focusing hand wheel 3 and the like), an elastic clamping ring 17, an annular clamping ring 18 and an eyepiece lens group 19. Wherein the adjustment group 14 comprises a height adjustment group and an orientation adjustment group. The motion conversion is that the focusing hand wheel is manually rotated to drive the zooming lens group 15 and the compensation lens group 16 to make linear motion through the rotation of the steel belt rivet 5, the spring steel belt 4 and the cylindrical cam 1, and the distance between the zooming lens group 15 and the compensation lens group 16 is changed to change the focal length of the optical system, thereby realizing the zooming function.
Specifically, as shown in fig. 2 to 3, a zoom handwheel rotation adjusting mechanism includes a cylindrical cam 1, a main body mirror tube 2 and a focusing handwheel 3, which are sequentially sleeved and connected. The rotary adjusting mechanism further comprises a spring steel strip 4, as shown in fig. 4, one end of the spring steel strip 4 is riveted and then welded with the steel strip rivet 5, and the other end of the spring steel strip 4 is provided with a threaded hole 12.
As shown in fig. 5-7, the inner wall of the main body mirror tube 2 is provided with a cylindrical hole sliding groove 11, the spring steel strip 4 moves through the cylindrical hole sliding groove 11, the size of the cylindrical hole sliding groove 11 is matched with that of the spring steel strip 4, specifically, the axial width of the cylindrical hole sliding groove 11 is equal to that of the spring steel strip 4, and the radial depth of the cylindrical hole sliding groove 11 is equal to the thickness of the spring steel strip 4. And the main body mirror tube 2 is provided with a steel belt guide sheet 8, the steel belt guide sheet 8 can be fixed by glue, a steel belt guide groove 9 is formed between the outline curve of the main body mirror tube 2 and the steel belt guide sheet 8, and the steel belt guide groove 9 is used for guiding the spring steel belt 4 to move smoothly. Furthermore, the contour line of the main body mirror tube 2 at the steel strip guide groove 9 is composed of more than three sections of broken lines, and the radial gap of the steel strip guide groove 9 is 1.1-1.5 times of the thickness of the spring steel strip 4, so that the steel strip guide groove 9 can be attached to the spring steel strip 4 as much as possible.
As shown in fig. 8-10, the cylindrical cam 1 is provided with two curved grooves 10, the cylindrical cam 1 is provided with a steel strip guide plate 8, the steel strip guide plate 8 can be fixed by glue, a steel strip guide groove 9 is formed between the contour curve of the cylindrical cam 1 and the steel strip guide plate 8, and the steel strip guide groove 9 is used for guiding the spring steel strip 4 to move smoothly. Furthermore, the contour line of the cylindrical cam 1 at the steel strip guide groove 9 is composed of more than three sections of broken lines, and the radial gap of the steel strip guide groove 9 is equal to 1.1-1.5 times of the thickness of the spring steel strip 4, so that the steel strip guide groove 9 can be attached to the spring steel strip 4 as much as possible.
The inner wall of focusing hand wheel 3 is equipped with cylinder hole spout 11, and spring steel band 4 walks in cylinder hole spout 11, and the size and the 4 looks adaptations of spring steel band of cylinder hole spout 11, it is specific, and the axial width of cylinder hole spout 11 equals the width of spring steel band 4, and the radial degree of depth of cylinder hole spout 11 equals the thickness of spring steel band 4. The focusing hand wheel 3 is provided with a rivet fixing straight groove 6, a steel belt rivet 5 is arranged in the rivet fixing straight groove 6, and the rivet fixing straight groove 6 can clamp the steel belt rivet 5. Further, the width of the rivet fixing straight groove 6 is equal to the diameter of the steel band rivet 5.
The rivet fixing straight groove 6 of the focusing hand wheel 3 clamps the steel strip rivet 5 at one end of the spring steel strip 4, the spring steel strip 4 continuously passes through the steel strip guide groove 9 formed between the main body mirror tube 2 and the steel strip guide sheet 8 along the cylindrical hole sliding groove 11 of the focusing hand wheel 3, then continues to pass through the steel strip guide groove 9 formed between the cylindrical cam 1 and the steel strip guide sheet 8 along the cylindrical hole sliding groove 11 of the main body mirror tube 2, and finally the threaded hole 12 of the spring steel strip 4 is fixed to the cylindrical cam 1 through the steel strip screw 7.
When the focusing hand wheel 3 rotates anticlockwise, the rivet fixing straight groove 6 drags the cylindrical cam 1 to rotate anticlockwise through the steel belt rivet 5 and the spring steel belt 4, the two curve grooves 10 on the cylindrical cam 1 control the zoom lens group 15 and the compensation lens group 16 to move axially, so that the distance between the lenses is changed, and the purpose of focusing and zooming is achieved.
When the focusing hand wheel 3 rotates clockwise, the rivet fixing straight groove 6 pushes the cylindrical cam 1 to rotate clockwise through the steel belt rivet 5 and the spring steel belt 4, and the functions are repeatedly realized.
The rotation angle of the focusing hand wheel 3 is related to the rotation angle of the cylindrical cam 1, and is related to the length of the spring steel belt 4, the variable lens displacement and the curve lift of the cylindrical cam 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A zoom hand wheel rotation adjusting mechanism comprises a cylindrical cam (1), a main body mirror tube (2) and a focusing hand wheel (3) which are sequentially sleeved and connected, wherein the cylindrical cam (1) is provided with two curve grooves (10), and is characterized by further comprising a spring steel belt (4),
one end of the spring steel belt (4) is riveted with a steel belt rivet (5), the focusing hand wheel (3) is provided with a rivet fixing straight groove (6), the steel belt rivet (5) is arranged in the rivet fixing straight groove (6), the rivet fixing straight groove (6) can clamp the steel belt rivet (5),
the other end of the spring steel belt (4) passes through the main body mirror tube (2) and is connected with the cylindrical cam (1) through a steel belt screw (7),
the spring steel belt guiding device is characterized in that the cylindrical cam (1) and the main body mirror tube (2) are respectively provided with a steel belt guiding sheet (8), a steel belt guiding groove (9) is formed between the cylindrical cam (1) and the steel belt guiding sheets (8), a steel belt guiding groove (9) is also formed between the main body mirror tube (2) and the steel belt guiding sheets (8), and the steel belt guiding groove (9) is used for guiding the spring steel belt (4) to move smoothly.
2. The zoom hand wheel rotation adjustment mechanism according to claim 1, wherein the inner walls of the main body lens tube (2) and the focusing hand wheel (3) are provided with cylindrical hole sliding grooves (11), and the spring steel belt (4) moves through the cylindrical hole sliding grooves (11).
3. A zoom handwheel rotation adjustment mechanism according to claim 2, characterized in that the axial width of the cylindrical bore slot (11) is equal to the width of the spring steel band (4).
4. A zoom handwheel rotation adjustment mechanism according to claim 3, characterized in that the radial depth of the cylindrical bore slot (11) is equal to the thickness of the spring steel band (4).
5. The zoom handwheel rotation adjustment mechanism according to claim 1, characterized in that the contour line of the cylinder cam (1) at the steel belt guide groove (9) is composed of more than three fold lines, and the contour line of the main body mirror tube (2) at the steel belt guide groove (9) is composed of more than three fold lines.
6. A zoom handwheel rotation adjustment mechanism according to claim 5, characterized in that the radial clearance of the steel strip guide groove (9) is 1.1-1.5 times the thickness of the spring steel strip (4).
7. A variable focus hand wheel rotation adjustment mechanism according to any of claims 1-6, characterized in that the width of the rivet fixing straight groove (6) is equal to the diameter of the steel band rivet (5).
8. A variable focus hand wheel rotation adjustment mechanism according to any of claims 1-6, characterized in that one end of the spring steel band (4) is riveted with the steel band rivet (5) and then welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122372197.XU CN216210156U (en) | 2021-09-28 | 2021-09-28 | Zooming hand wheel rotation adjusting mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122372197.XU CN216210156U (en) | 2021-09-28 | 2021-09-28 | Zooming hand wheel rotation adjusting mechanism |
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| CN216210156U true CN216210156U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122372197.XU Active CN216210156U (en) | 2021-09-28 | 2021-09-28 | Zooming hand wheel rotation adjusting mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750319A (en) * | 2022-05-25 | 2022-07-15 | 河北圣昊光电科技有限公司 | Scribing machine base and scribing machine |
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2021
- 2021-09-28 CN CN202122372197.XU patent/CN216210156U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750319A (en) * | 2022-05-25 | 2022-07-15 | 河北圣昊光电科技有限公司 | Scribing machine base and scribing machine |
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