CN201029007Y - Zoom lens zooming mechanism with all-pass guide slot - Google Patents
Zoom lens zooming mechanism with all-pass guide slot Download PDFInfo
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- CN201029007Y CN201029007Y CNU2006200293817U CN200620029381U CN201029007Y CN 201029007 Y CN201029007 Y CN 201029007Y CN U2006200293817 U CNU2006200293817 U CN U2006200293817U CN 200620029381 U CN200620029381 U CN 200620029381U CN 201029007 Y CN201029007 Y CN 201029007Y
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- gathering sill
- shaft
- compensation group
- compensation
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Abstract
The utility model discloses a zooming mechanism with a through guide groove for zoom lens and consists of a principal axle, a cam, a driven nail, a zoom glide rack, a zoom guide groove, a compensation guide groove and a compensation glide rack. The principal axle is a hollow cylinder axle. Three zoom guide grooves and three compensation guide grooves are arranged on the principal axle, the two types of guide grooves are parallel with the axial line of the principal axle and are distributed on the circumference of the principal axle, an angle of 60 degrees is arranged between the two adjacent guide grooves and the principal axle; the cam is arranged at the offside of the principal axle. The cam is provided with a big gear. The zoom glide rack and the compensation glide rack are installed at the inside diameter of the principal axle, when the big gear drives the two types of glide racks and the frame to repeatedly move along a straight line of respective guide grooves by driving the cam to rotate so as to achieve zooming.
Description
One, technical field
The utility model belongs to the zoom mechanism of a kind of optical zoom camera lens that relates in the optical instrument technical field.
Two, background technology
The optical zoom camera lens is to utilize the focal length of camera lens to change continuously, finish to target by near to far or continuous acquisition and tracking from far near.In real work, in order to catch mobile target all the time, need carry out continuous adjustment to the focal length of camera lens, zoom mechanism is vital to adjusting focal length, it relates to dirigibility and the zoom precision that the zoom lens stretches.
The prior art the most approaching with the utility model, be a kind of zoom lens's of Changchun Institute of Optics, Fine Mechanics and Physics, CAS's research and design zoom mechanism, as shown in Figure 1: comprise body shaft 1, steel ball 2, left bearing outer shroud 3, cam 4, rolling bearing 5, staple 6, become times curved groove 7, axis of rolling bearing sleeve 8, becoming doubly, group drives nail 9, become times picture frame trim ring 10, become times picture frame 11, become and doubly organize balladeur train 12, become and doubly organize excentric shaft 13, major part screw 14, bearing 15, press nail 16, bearing holder (housing, cover) 17, compensation group balladeur train 18, become doubly group half logical gathering sill 19, the compensation group drives nail 20, compensated curve groove 21, compensation group half logical gathering sill 22, gear wheel 23, right bearing outer shroud 24, the collar of thrust bearing 25, big nut 26, compensation picture frame 27, compensation picture frame trim ring 28, compensation group excentric shaft 29.
On the shoulder at the two ends, the left and right sides of body shaft 1, respectively be equipped with a circle steel ball 2, steel ball 2 on the shoulder of on the left side is formed sliding shaft sleeve with the left bearing outer shroud that contacts with it 3, another circle steel ball 2 on the shoulder is on the right formed sliding shaft sleeve with the right bearing outer shroud 24 that contacts with it, be cam 4 between left bearing outer shroud 3 and the right bearing outer shroud 24, left bearing outer shroud 3 and right bearing outer shroud 24 are connected with screw and cam 4 respectively, the one circle steel ball 2 on body shaft 1 the right is equipped with tight by the collar of thrust bearing 25 and big nut 26, be contained in the gear wheel 23 that cam 4 takes on the shoulder on limit and be connected with cam 4.
On the cam 4 of the outside of cylindrical body axle 1 installation, the position of taking back has and becomes times curved groove 7, and the position that takes over has compensated curve groove 21, when cam 4 rotates, become and doubly organize drive nail 9 along becoming 7 rollings of times curved groove, compensation group drive nail 20 rolls along compensated curve groove 21.
Become and doubly organize the position, the left side that balladeur train 12 is installed in body shaft 1, drive nail 9 and be connected by becoming doubly group with body shaft 1, cam 4, when gear wheel 23 drives cam 4 rotations, a change times group drives nail 9 drive changes and doubly organizes balladeur train 12, doubly organize three changes on the balladeur train 12 and doubly organize bearing holder (housing, cover) 17 on the excentric shaft 13 by being installed in change, doubly organize half logical gathering sill 19 along the change on the body shaft 1 and do straight reciprocating motion; Compensation group balladeur train 18 is installed in the position, the right of body shaft 1, driving nail 20 by the compensation group is connected with body shaft 1, cam 4, when gear wheel 23 drives cam 4 rotations, the compensation group drives nail 20 and drives compensation group balladeur train 18, by being installed in the bearing holder (housing, cover) on three compensation group excentric shafts 29 on the compensation group balladeur train 18, do straight reciprocating motion along the half logical gathering sill 22 of the compensation group on the body shaft 1, the bearing holder (housing, cover) on the compensation group excentric shaft 29 is consistent with the bearing holder (housing, cover) that change is doubly organized on the excentric shaft 13.
Become times picture frame 11 and be fixed on change and doubly organize on the balladeur train 12 by becoming a times picture frame trim ring 10, covariant is doubly organized balladeur train 12 and is done straight reciprocating motion along becoming doubly group half logical gathering sill 19; Compensation picture frame 27 is fixed on the compensation group balladeur train 18 by compensation picture frame trim ring 28, does straight reciprocating motion with compensation group balladeur train 18 along compensation group half logical gathering sill 22.
The major issue that this zoom mechanism exists is: be inside surface half groove on the cylindrical body axle 1 owing to become doubly group half logical gathering sill 19 and compensation group half logical gathering sill 22, make the processing technology complexity, be difficult for guaranteeing machining precision, bring difficulty for simultaneously debuging of whole zoom mechanism, influence work program cycle and product quality.
Three, summary of the invention
In order to overcome the shortcoming that prior art exists, the purpose of this utility model is to simplify the processing technology to body shaft, raising is to becoming the machining precision of doubly organizing gathering sill and compensation group gathering sill, shortening is debug the time zoom mechanism, guarantee product quality, a kind of zoom mechanism that on body shaft, has the all-pass gathering sill of ad hoc meter.
The technical problems to be solved in the utility model is: a kind of zoom lens's the zoom mechanism that has the all-pass gathering sill is provided, and the technical scheme of technical solution problem comprises as shown in Figure 2: body shaft 30, steel ball 31, left bearing outer shroud 32, cam 33, axis of rolling bearing sleeve 34, rolling bearing 35, staple 36, become times curved groove 37, become doubly group drive nail 38, become times picture frame screw 39, become times picture frame 40, become and doubly organize balladeur train 41, become and doubly organize excentric shaft 42, major part screw 43 is pressed nail 44, bearing 45, become and doubly organize all-pass gathering sill 46, compensation group all-pass gathering sill 47, compensation group excentric shaft 48, compensation group balladeur train 49, compensated curve groove 50, gear wheel 51, the compensation group drives nail 52, compensation picture frame 53, compensation picture frame screw 54, right bearing outer shroud 55, the collar of thrust bearing 56, big nut 57.
Body shaft 30 is cylinder tubular shafts, and the position of taking back has three changes and doubly organizes gathering sill, and this gathering sill is to become doubly to organize all-pass gathering sill 46, and the position that takes over has three compensation group gathering sills, and this gathering sill is a compensation group all-pass gathering sill 47; Article three, the axis that all-pass gathering sill 46 is parallel to body shaft 30 is doubly organized in change, on the circumference of body shaft 30, evenly distribute, adjacent two gathering sills are 120 ° with respect to the axis angle of body shaft, article three, compensation group all-pass gathering sill 47 is parallel to the axis of body shaft 30, on the circumference of body shaft 30, evenly distribute, adjacent two gathering sills are 120 ° with respect to the axis angle of body shaft, and adjacent change is doubly organized all-pass gathering sill 46 and compensation group all-pass gathering sill 47 and is 60 ° with respect to the axis angle of body shaft 30.The all-pass gathering sill is meant that the groove depth of gathering sill in the scope of gathering sill length, penetrates the wall thickness of cylindrical body axle.
On the shoulder at the two ends, the left and right sides of main shaft 30, respectively be equipped with a circle steel ball 31, circle steel ball 31 on the left end shoulder is formed sliding shaft sleeve with the left bearing outer shroud 32 that contacts with them, circle steel ball 31 on the right-hand member shoulder is formed sliding shaft sleeve with the right bearing outer shroud 55 that contacts with them, one circle steel ball 31 is equipped with tightly by the collar of thrust bearing 56 and big nut 57, is threaded engagement between big nut 57 and the body shaft 30; Left bearing outer shroud 32 and right bearing are cam 33 between outer shroud 55, and left bearing outer shroud 32 and right bearing outer shroud 55 are connected with screw and cam 33 respectively, and the sliding shaft sleeve by two ends between cam 33 and the body shaft 30 contacts; Gear wheel 51 is equipped with at the shoulder place, position that takes at cam 33, and both are connected with screw; On cam 33, the position of taking back has and becomes times curved groove 37, the position that takes over has compensated curve groove 50, when cam 33 rotates, becoming doubly, group drives nail 38, by the axis of rolling bearing sleeve 34 on it, along becoming 37 rollings of times curved groove, the compensation group drives nail 52 and rolls along compensated curve groove 50 by the bearing holder (housing, cover) on it (times bearing holder (housing, cover) that group drives on the nail 38 is identical with becoming).
Become and doubly organize balladeur train 41, be installed in the position, the left side of body shaft 30 internal diameters, group drives nail 38 by becoming doubly, the wall that passes body shaft 30 stretches to the body shaft internal diameter, and the lower end is doubly organized balladeur train 41 usefulness screw threads and is connected with becoming, and becomes the upper end that group doubly drives nail 38 rolling bearing 35 is housed, axis of rolling bearing sleeve 34 is equipped with in its outside, and fixing with staple 36, become the doubly axis of rolling bearing sleeve 34 of group drive nail 38 upper ends, be contained in the change times curved groove 37 on the cam 33; Four changes are housed on the balladeur train 41 from left to right doubly organize excentric shaft 42 becoming doubly to organize, the first, the 3rd eccentric shaft is doubly organized a side of all-pass gathering sill 46 near change, the second, the 4th eccentric shaft is doubly organized the opposite side of all-pass gathering sill 46 near change, each root in the excentric shaft 42 is doubly organized in four changes, all use major part screw 43 fixing aside, each root becomes the upper end of doubly organizing excentric shaft 42 bearing 45 all is housed, with pressing nail 44 to tighten up, each root becomes doubly to be organized bearing 45 that excentric shaft 42 is equipped with by the upper end and becomes the sidewall rolling of doubly organizing all-pass gathering sill 46 and contact; Compensation group balladeur train 49 is installed in the position, the right of body shaft 30 internal diameters, the compensation group drives nail 52 walls that pass body shaft 30 and stretches to the body shaft internal diameter, lower end and compensation group balladeur train 49 usefulness screw threads are connected, the compensation group drives the rolling bearing the upper end of nail 52 installed and axis of rolling bearing sleeve (with becoming doubly group to drive the rolling bearing of installing nail 38 upper ends identical with axis of rolling bearing sleeve) and places the compensated curve groove 50 on the cam 33, on compensation group balladeur train 49, four compensation group excentric shafts 48 are housed from right to left, first, the 3rd eccentric shaft is near a side of benefit group all-pass gathering sill 47, second, the 4th eccentric shaft is near the opposite side of compensation group all-pass gathering sill 47, each root in four compensation group excentric shafts 48, all use major part screw 43 fixing aside, bearing all is equipped with in the upper end of each root compensation group excentric shaft 48, with pressing nail to tighten up, each root compensation group excentric shaft 48, the bearing that is equipped with by the upper end contacts with the sidewall rolling of compensation group all-pass gathering sill 47.Major part screw, bearing, pressure nail used in the compensation group excentric shaft 48 are all doubly organized major part screw 43 used in the excentric shaft 42, bearing 37 with change, are pressed nail 38 identical.The notion of above-mentioned excentric shaft is meant that the position deviation of axis becomes and doubly organizes the groove width midline position of all-pass gathering sill 40 and the groove width midline position of runout compensation group all-pass gathering sill 41.
Change times picture frame 40 a usefulness change times picture frame screw 39 is fixed on change and doubly organizes on the balladeur train 41, and covariant is doubly organized balladeur train 41, doubly organizes all-pass gathering sill 46 along change and does straight reciprocating motion; Compensation picture frame 53 usefulness compensation picture frame screw 54 is fixed on the compensation group balladeur train 49, does straight reciprocating motion with compensation group balladeur train 49 along compensation group all-pass gathering sill 47.
Principle of work explanation: when gear wheel 51 drives cam 33 rotations, becoming doubly, group drive nail 38 rolls along times curved groove of the change on the cam 33 37, drive to become and doubly organize balladeur train 41, doubly organize excentric shaft 42 by becoming, do straight reciprocating motion becoming doubly to organize in the all-pass gathering sill 46, meanwhile, the compensation group drives nail 52 and also rolls along the compensated curve groove on the cam 33 50, drive compensation group balladeur train 49 and in compensation group all-pass gathering sill 47, do straight reciprocating motion by compensation group excentric shaft 48, because change times picture frame 40 is installed in change and doubly organizes on the balladeur train 41, be synchronized with the movement with balladeur train, compensation picture frame 53 is installed on the compensation group balladeur train 49, be synchronized with the movement with balladeur train, therefore, drive nail 38 drive changes in a change times group and doubly organize balladeur train 41 motions, in the time of 49 motions of compensation group drive nail 52 band fortune compensation group balladeur trains, it is moving that change times picture frame 40 and compensation picture frame 53 are also done linear reciprocation.Thereby reach zoom, become purpose doubly.
Good effect of the present utility model: because gathering sill is doubly organized in change and compensation group gathering sill has adopted all-pass gathering sill structure, simplified processing technology greatly, guaranteed machining precision, made things convenient for and debug, remove bearing holder (housing, cover) on each excentric shaft again, improved manufacturing schedule, guaranteed product quality.
Four, description of drawings
Fig. 1 is the structural representation of prior art;
Fig. 2 is a structural representation of the present utility model.
Five, embodiment
The utility model is implemented by structure shown in Figure 2, and size and focal length length design as required.Wherein the material of body shaft 30 adopts 2A12 aluminium, and all-pass gathering sill 46 is doubly organized in three top changes, is parallel to the axis of body shaft 30, and adjacent gathering sill is 120 ° with respect to the angle of axis; Article three, compensation group all-pass gathering sill 47, the axis that is parallel to body shaft, adjacent gathering sill is 120 ° with respect to the angle of axis, adjacent change organizes doubly that the angle with respect to the body shaft axis is 60 ° between all-pass gathering sill 46 and the compensation group all-pass gathering sill 47, each gathering sill groove parallel sided degree is not more than 0.006mm, and steel ball adopts 0 grade of steel ball, and the material of steel ball is GCr15, the material of left bearing outer shroud is also selected GCr15 for use, forms bearing with steel ball 31 and pays.The material of cam 33 is to select according to the requirement of its processability and stability, and what select for use is the ZL24 cast aluminium, and times curved groove of the change on the cam 33 37 and compensated curve groove 50 require the wide property of processing.Become the drive nail 38 of times group and the drive of compensation group and follow closely 52 material selection 45
#, the size that both require is identical with structure, and axis of rolling bearing sleeve 34 is installed in two upper ends that drive nail, and the material of axis of rolling bearing sleeve 34 mills imines for poly-, cooperates with rolling bearing 35 to be interference fit, and the magnitude of interference is 0.3mm～0.4mm, compresses with staple 36.Become the material of doubly organizing balladeur train 41 and compensation group balladeur train 49 and adopt 2A12 aluminium, excentric shaft 42 that both install above and 48 material adopt 45
#The bearing of installing on two kinds of excentric shafts 45 adopts the GCr15 bearings, presses nail 44 to adopt 45
#, the material that becomes times picture frame 40 and compensation picture frame 53 adopts 2A12 aluminium, and the material of the right bearing outer shroud 55 and the collar of thrust bearing 56 adopts GCr15, and forms right bearing with steel ball 31.
Claims (1)
1. a zoom lens the zoom mechanism that has the all-pass gathering sill comprises body shaft, steel ball, left bearing outer shroud, cam, rolling bearing, staple, change times curved groove, axis of rolling bearing sleeve, becomes doubly that group drives nail, becomes times picture frame, becomes and doubly organize balladeur train, become and doubly organize excentric shaft, major part screw, bearing, pressure nail, compensation group balladeur train, become and doubly organize gathering sill, compensation group drive nail, compensated curve groove, compensation group gathering sill, gear wheel, right bearing outer shroud, the collar of thrust bearing, big nut, compensation picture frame, compensation group excentric shaft; It is characterized in that also comprising change times picture frame screw (39), compensation picture frame screw (54), become and doubly organize gathering sill into all-pass gathering sill (46) is doubly organized in change, compensation group gathering sill is compensation group all-pass gathering sill (47); Body shaft (30) is a cylinder tubular shaft, and the position of taking back has three changes and doubly organizes gathering sill, and this gathering sill is to become doubly to organize all-pass gathering sill (46), and the position that takes over has three compensation group gathering sills, and this gathering sill is a compensation group all-pass gathering sill (47); Article three, the axis that all-pass gathering sill (46) is parallel to body shaft (30) is doubly organized in change, on the circumference of body shaft (30), evenly distribute, adjacent two gathering sills are 120 ° with respect to the axis angle of body shaft, article three, compensation group all-pass gathering sill (47) is parallel to the axis of body shaft (30), on the circumference of body shaft (30), evenly distribute, adjacent two gathering sills are 120 ° with respect to the axis angle of body shaft, and adjacent change is doubly organized all-pass gathering sill (46) and compensation group all-pass gathering sill (47) and is 60 ° with respect to the axis angle of body shaft (30); On the shoulder at the two ends, the left and right sides of main shaft (30), respectively be equipped with a circle steel ball (31), circle steel ball (31) on the left end shoulder is formed sliding shaft sleeve with the left bearing outer shroud (32) that contacts with them, circle steel ball (31) on the right-hand member shoulder is formed sliding shaft sleeve with the right bearing outer shroud (55) that contacts with them, one circle steel ball (31) is equipped with tightly by the collar of thrust bearing (56) and big nut (57), is threaded engagement between big nut (57) and the body shaft (30); Left bearing outer shroud (32) and right bearing are cam (33) between outer shroud (55), and left bearing outer shroud (32) and right bearing outer shroud (55) use screw and cam (33) to be connected respectively, and the sliding shaft sleeve by two ends between cam (33) and the body shaft (30) contacts; Gear wheel (51) is equipped with at the shoulder place, position that takes at cam (33), and both are connected with screw; On cam (33), the position of taking back has and becomes times curved groove (37), the position that takes over has compensated curve groove (50), become and doubly organize balladeur train (41), be installed in the position, the left side of body shaft (30) internal diameter, group drive nail becomes the doubly axis of rolling bearing sleeve (34) of group drive nail (38) upper end by becoming doubly, is contained in the change times curved groove (37) on the cam (33); Four changes are housed on the balladeur train (41) from left to right doubly organize excentric shaft (42) becoming doubly to organize, first, the 3rd eccentric shaft is doubly organized a side of all-pass gathering sill (46) near change, second, the 4th eccentric shaft is doubly organized the opposite side of all-pass gathering sill (46) near change, each root in the excentric shaft (42) is doubly organized in four changes, all use major part screw (43) fixing aside, each root becomes the upper end of doubly organizing excentric shaft (42) bearing (45) all is housed, with pressing nail (44) to tighten up, each root becomes doubly to be organized bearing (45) that excentric shaft (42) is equipped with by the upper end and becomes the sidewall rolling of doubly organizing all-pass gathering sill (46) and contact; Compensation group balladeur train (49) is installed in the position, the right of body shaft (30) internal diameter, the wall that compensation group drive nail (52) passes body shaft (30) stretches to the body shaft internal diameter, lower end and compensation group balladeur train (49) are connected with screw thread, the compensation group drives the rolling bearing the upper end of nail (52) installed and rolling bearing and is placed in the compensated curve groove (50) on the cam (33), on compensation group balladeur train (49), four compensation group excentric shafts (48) are housed from right to left, first, the 3rd eccentric shaft is near a side of benefit group all-pass gathering sill (47), second, the 4th eccentric shaft is near the opposite side of compensation group all-pass gathering sill (47), each root in four compensation group excentric shafts (48), all use major part screw (43) fixing aside, bearing all is equipped with in the upper end of each root compensation group excentric shaft (48), with pressing nail to tighten up, each root compensation group excentric shaft (48), the bearing that is equipped with by the upper end contacts with the sidewall rolling of compensation group all-pass gathering sill (47), change times picture frame (40) is fixed on change with a change times picture frame screw (39) and doubly organizes on the balladeur train (41), and compensation picture frame (53) is fixed on the compensation group balladeur train (49) with compensation picture frame screw (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200293817U CN201029007Y (en) | 2006-09-22 | 2006-09-22 | Zoom lens zooming mechanism with all-pass guide slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200293817U CN201029007Y (en) | 2006-09-22 | 2006-09-22 | Zoom lens zooming mechanism with all-pass guide slot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201029007Y true CN201029007Y (en) | 2008-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200293817U Expired - Fee Related CN201029007Y (en) | 2006-09-22 | 2006-09-22 | Zoom lens zooming mechanism with all-pass guide slot |
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| Country | Link |
|---|---|
| CN (1) | CN201029007Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004299A (en) * | 2010-09-10 | 2011-04-06 | 中国科学院长春光学精密机械与物理研究所 | Four-slider zoom compensation mechanism of zoom lens |
| CN104459930A (en) * | 2014-08-27 | 2015-03-25 | 中国科学院长春光学精密机械与物理研究所 | Hole guiding ball straight line guiding mechanism |
-
2006
- 2006-09-22 CN CNU2006200293817U patent/CN201029007Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004299A (en) * | 2010-09-10 | 2011-04-06 | 中国科学院长春光学精密机械与物理研究所 | Four-slider zoom compensation mechanism of zoom lens |
| CN102004299B (en) * | 2010-09-10 | 2012-07-25 | 中国科学院长春光学精密机械与物理研究所 | Four-slider zoom compensation mechanism of zoom lens |
| CN104459930A (en) * | 2014-08-27 | 2015-03-25 | 中国科学院长春光学精密机械与物理研究所 | Hole guiding ball straight line guiding mechanism |
| CN104459930B (en) * | 2014-08-27 | 2017-12-26 | 中国科学院长春光学精密机械与物理研究所 | Hole is oriented to ball linear guiding mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20091022 |