CN208737077U - Electric zoom device - Google Patents
Electric zoom device Download PDFInfo
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- CN208737077U CN208737077U CN201821556658.0U CN201821556658U CN208737077U CN 208737077 U CN208737077 U CN 208737077U CN 201821556658 U CN201821556658 U CN 201821556658U CN 208737077 U CN208737077 U CN 208737077U
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- 238000013461 design Methods 0.000 description 2
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Abstract
The utility model relates to an electronic zoom device, include: a first lens barrel body (1); the second lens barrel body (2) is arranged in the first lens barrel body (1) and is in sliding connection with the first lens barrel (1); the limiting and guiding structure (3) is used for limiting the second lens barrel body (2) to move in the first lens barrel body (1) along the axial direction; the transmission assembly (4) is fixedly connected with the second lens barrel body (2) and drives the second lens barrel body (2) to act; and the driving component (5) drives the transmission component (4) to act. The utility model discloses an electronic zoom device, first lens cone body and second lens cone body adopt the shaft type fit mode in hole, so are favorable to improving the utility model discloses electronic zoom device's the precision of zooming to still be equipped with spacing guide structure and make the second lens cone body remove along its axial in first lens cone body, thereby it can not take place to rotate to have injectd the second lens cone body, makes to zoom more stable.
Description
Technical field
The utility model belongs to optical lens zoom technology field more particularly to a kind of power zoom device.
Background technique
With the development of Digital Electronic Technique, visual field is also more and more extensive for the needs with zoom function camera lens, example
Such as in the intelligent transportation field of safety monitoring, industrial automation etc..
Zoom mechanism is the core function component of zoom lens, real for controlling the variation of the spacing between optical mirror slip group
Existing zoom function.Therefore, the stability of zoom mechanism directly determines the use reliability of zoom lens.Current existing varifocal mirror
Zoom lens control device in head is mostly cam-type structure, and that there are volumes is big for such scheme, difficulty of processing is high and zoom accuracy is poor lacks
It falls into.
Utility model content
The purpose of this utility model is to provide the power zoom devices of a kind of high-precision, high stability.
To achieve the above object, the utility model provides a kind of power zoom device, comprising:
First lens barrel body；
Second lens barrel body, setting are slidably connected in the first lens barrel body with the first lens barrel body；
Limition orientation structure is axially moveable in the first lens barrel body for limiting the second lens barrel body；
Transmission component is fixedly connected with the second lens barrel body, drives the second lens barrel body movement；
Driving assembly drives the transmission component to act.
One aspect according to the present utility model, the limition orientation structure include guide part and with the guide part phase
The guide groove of cooperation；
The guide part is arranged on the outer surface of the second lens barrel body；
The central axis of the guide groove and the first lens barrel body is set in parallel the inner surface in the first lens barrel body.
One aspect according to the present utility model, the guide part are equipped with sleeve.
One aspect according to the present utility model, the transmission component include:
Supporting member is fixed on the first lens barrel body；
Drive lead screw is supported on the supporting member；
Feed screw nut is cooperatively connected with the drive lead screw, and is fixedly connected with the second lens barrel body.
One aspect according to the present utility model, the first lens barrel body are equipped with axially extending along the first lens barrel body
Through slot；
The drive lead screw is located above the through slot；
The feed screw nut passes through the through slot and is fixedly connected with the second lens barrel body.
One aspect according to the present utility model, the supporting member include two ball bearings being oppositely arranged and are used for solid
The bearing locking accessory of the fixed ball bearing, the both ends of the drive lead screw are supported on respectively on two ball bearings.
One aspect according to the present utility model, the first lens barrel body are equipped with ball bearing mounting groove.
One aspect according to the present utility model, the driving component include:
Bearing support is fixed on the first lens barrel body；
Power source is fixedly supported upon on the bearing support, provides driving force；
Output gear is connect with the power source；
Screw gear is fixed on the drive lead screw, is meshed with the output gear.
One aspect according to the present utility model, the power source are motor or motor.
One aspect according to the present utility model is additionally provided with locating part on the first lens barrel body.
A scheme according to the present utility model, the first lens barrel body and the second lens barrel body of the utility model use hole shaft type
Fit system, be so conducive to the zoom accuracy for improving the utility model power zoom device, and be additionally provided with limition orientation
Structure moves the second lens barrel body in the first lens barrel body along its axial direction, to define that the second lens barrel body will not occur to turn
It is dynamic, so that zoom is more stable, avoids the second lens barrel body 2 situation for causing camera lens resolving power unstable that rotates and occur.
A scheme according to the present utility model is additionally provided with sleeve on guide part, can so improve guide part and guiding
The cooperation of slot guarantees that movement of the guide part in guide groove is smooth, that is, guarantees the smoothness of the second lens barrel body movement, be not in
Caton, stuck situation.
A scheme according to the present utility model, is driven in the form of drive lead screw and feed screw nut, itself
Characteristic just high with precision, mechanical efficiency is high and the service life is long, so as to which the precision of zoom is effectively ensured.In addition, using passing
Dynamic screw rod and the mode of feed screw nut's cooperation are driven, and not will receive the influence of shift motion size, and existing cam path
When the actuating travel of structure is larger, cam path and the angle in actuation direction can reduce, and driving force required for actuation can gradually increase
Greatly, and self-locking stability declines, and causes zoom accuracy and stability poor, and the drive mechanism of the utility model is well
Solves the problems, such as this, i.e., the power zoom device of the utility model is relative to existing zoom lens control device, still in the big stroke of zoom
With high zoom precision and zoom stability.
A scheme according to the present utility model realizes the guiding to the second lens barrel body by setting limition orientation structure,
The driving to the second lens barrel body is realized by setting driving assembly and transmission component, thus by guide function and transmission agency point
It opens, the transmission and guiding made is non-interference, advantageously ensures that zoom accuracy and zoom stability.
Detailed description of the invention
Fig. 1 is the configuration diagram for schematically showing the power zoom device according to a kind of embodiment of the utility model；
Fig. 2 is the exploded view for schematically showing a kind of power zoom device of embodiment according to the present utility model；
Fig. 3 is the cross-sectional view for schematically showing a kind of power zoom device of embodiment according to the present utility model；
Fig. 4 is the cross-sectional view for schematically showing B-B in Fig. 3.
Meaning representated by numbering in the drawing is as follows:
1, the first lens barrel body；2, the second lens barrel body；3, limition orientation structure；4, transmission component；5, driving assembly；31, it leads
To part；32, guide groove；31a, sleeve；41, supporting member；42, it passes
Dynamic screw rod；43, feed screw nut；11, through slot；411, ball bearing；412, bearing locking accessory；
12, ball bearing mounting groove；51, bearing support；52, power source；53, output gear；54, silk
Bar gear；13, locating part.
Specific embodiment
It, below will be to implementation in order to illustrate more clearly of the utility model embodiment or technical solution in the prior art
Attached drawing needed in mode is briefly described.It should be evident that the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skills without creative efforts, can be with
It obtains other drawings based on these drawings.
When being described for the embodiments of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower",
"front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", orientation or positional relationship is expressed by "outside"
Based on orientation or positional relationship shown in relevant drawings, it is merely for convenience of describing the present invention and simplifying the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore on
Stating term should not be understood as limiting the present invention.
The utility model is described in detail with reference to the accompanying drawings and detailed description, embodiment cannot herein one
One repeats, but therefore the embodiments of the present invention is not defined in following implementation.
Fig. 1 is the structure chart for schematically showing the power zoom device according to a kind of embodiment of the utility model.Fig. 2 is
Schematically show the exploded view of the power zoom device according to a kind of embodiment of the utility model.Referring to figs. 1 and 2,
The power zoom device of the utility model includes the first lens barrel body 1, the second lens barrel body 2, limition orientation structure 3,4 and of transmission component
Driving assembly 5.It is empty that a kind of embodiment according to the present utility model, the first lens barrel body 1 and the second lens barrel body 2 are equipped with accommodating
Between, for placing eyeglass, and the setting of the second lens barrel body 2 is slidably connected in the first lens barrel body 1 with the first lens barrel body 1.I.e.
One lens barrel body 1 is used as actuation group, can slide in the first lens barrel body 1 as fixed group, the second lens barrel body 2.The utility model
Limition orientation structure 3 for limit the second lens barrel body 2 moved in the axial direction in the first lens barrel body 1, transmission component 4 be used for band
Dynamic second lens barrel body 2 is mobile, and driving assembly 5 is for driving transmission component 4 to act.
The power zoom device of the utility model drives transmission component 4 to act, and then drives second by driving assembly 5
Lens barrel body 2 is moved, due to being provided with limition orientation structure 3 so that the second lens barrel body 2 in the first lens barrel body 1 only along
Its axial direction is moved, so as to realize zoom purpose.The first lens barrel body 1 of the utility model and the second lens barrel body 2 use
The fit system of hole shaft type is so conducive to the zoom accuracy for improving the utility model power zoom device, and is additionally provided with limit
Position guide frame 3 moves the second lens barrel body 2 in the first lens barrel body 1 along its axial direction, to define the second lens barrel body
2 will not rotate, so that zoom is more stable, avoiding the second lens barrel body 2 and rotating causes camera lens resolving power unstable
The case where occur.
The power zoom device of the utility model is specifically described below:
In conjunction with shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of embodiment according to the present utility model, the limit of the utility model
Position guide frame 3 includes guide part 31 and guide groove 32, and in the present embodiment, guide part 31 is guide pin, and guide pin setting is the
On the outer surface of two lens barrel bodies 2.Guide groove 32 is arranged on the inner surface of the first lens barrel body 1, guide pin and 32 phase interworking of guide groove
It closes, guide pin can slide in guide groove 32.In the present embodiment, it is moved in the first lens barrel body 1 for the second lens barrel body 2 of guarantee
Stationarity, two guide parts 31 are oppositely arranged on the outer surface of the second lens barrel body 2, on the inner surface of the first lens barrel body 1
It is oppositely arranged two guide grooves 32.
In the present embodiment, guide groove 32 is set in parallel to each other with 1 central axis of the first lens barrel body, i.e., guide groove 32 exists
It is axially extending along its on the inner surface of first lens barrel body 1.Setting guide part 31 on the second lens barrel body 2 of the utility model, first
Lens barrel body 1 is equipped with guide groove 32, is played to the second lens barrel body 2 by the cooperation of guide part 31 and guide groove 32 in the first lens barrel
The guiding role moved in body 1, and since guide groove 32 is the slot arranged in parallel with 1 central axis of the first lens barrel body, thus
The rotation that the second lens barrel body 2 can be limited move it can only along the axial direction of the first lens barrel body 1, be conducive to improve change
Pyrogene degree, while the influence that can be rotated to avoid the second lens barrel body 2 to camera lens resolving power guarantee image quality.
In the present embodiment, it is additionally provided with sleeve 31a on guide part 31, can so improves guide part 31 and guide groove
32 cooperation guarantees that movement of the guide part 31 in guide groove 32 is smooth, that is, guarantees the smoothness of the second lens barrel body 2 movement, no
It will appear Caton, stuck situation.
In conjunction with shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the transmission component 4 of the utility model includes supporting member 41, drive lead screw
42 and feed screw nut 43.In the present embodiment, supporting member 41 is fixed on the first lens barrel body 1, and drive lead screw 42 is supported on
In bearing member 41, feed screw nut 43 and drive lead screw 42 are cooperatively connected, and are fixedly connected with the second lens barrel body 2.
Specifically, in the present embodiment, through slot 11 is set on first lens barrel body 1, and through slot 11 is along the first lens barrel body 1
It is axially extending, supporting member 41 is axially disposed within the opposite two sides of through slot 11 along the first lens barrel body 1, and supporting member 41 includes two
A ball bearing 411 being oppositely arranged and the bearing locking accessory 412 for fixing ball bearing 411.The transmission of the utility model
Screw rod 42 is located at 11 top of through slot, is supported on ball bearing 411 in parallel to each other with 1 central axis of the first lens barrel body, screw rod spiral shell
Mother 43 can move on drive lead screw 42, and feed screw nut 43 passes through through slot 11 and is fixedly connected with the second lens barrel body 2, so works as
Drive lead screw 42 can be such that feed screw nut 43 moves along drive lead screw 42 when rotating, due to feed screw nut 43 and the second lens barrel body
2 are fixedly connected, and so as to drive the second lens barrel body 2 to move axially in lens barrel body 1, that is, realize zoom purpose.This is practical
The length of novel drive lead screw 42 and feed screw nut 43 can be adjusted according to actual needs, realize that the second lens barrel body 2 is dynamic
Make the adjustment of range, the i.e. adjustment of zooming range.
In the present embodiment, it is additionally provided with ball bearing mounting groove 12 in the first lens barrel body 1, for installing ball bearing
411, it so can reduce the volume of whole device.Certainly, design according to the present utility model, ball bearing 411 can be direct
It is fixedly mounted on the outer surface of the first lens barrel body 1.The drive lead screw 42 of the utility model is supported on ball bearing 411, can
To effectively reduce the movement resistance of drive lead screw 42, stablize so that zooming procedure is more easy.
In the present embodiment, feed screw nut 43 is not fixedly connected with the second lens barrel body 2 directly, but simultaneously
The realization feed screw nut 43 of nut fixed frame 431 is fixedly connected with the second lens barrel body 2, i.e. feed screw nut 43 and nut fixed frame
431 are fixedly connected, and nut fixed frame 431 is fixed on the second lens barrel body 2.Certainly, design according to the present utility model, can be with
It is not provided with nut fixed frame 431, feed screw nut 43 is fixedly connected with the second lens barrel body 2 directly, equally can be realized driving wire
When bar 42 rotates, feed screw nut 43 drives the second lens barrel body 2 is mobile to realize zoom.
The power zoom device of the utility model is driven in the form of drive lead screw 42 and feed screw nut 43,
Characteristic inherently high with precision, mechanical efficiency is high and the service life is long, so as to which the precision of zoom is effectively ensured.In addition, adopting
It is driven with the mode that drive lead screw 42 and feed screw nut 43 cooperate, not will receive the influence of shift motion size, and it is existing
Cam slot structure actuating travel it is larger when, cam path and the angle in actuation direction can reduce, driving force required for actuation
It can be gradually increased, and self-locking stability declines, and causes zoom accuracy and stability poor, and the transmission knot of the utility model
Structure 4 has well solved this problem, i.e. the power zoom device of the utility model is big in zoom relative to existing zoom lens control device
Still there is high zoom precision and zoom stability when stroke.
In conjunction with shown in Fig. 1, Fig. 2 and Fig. 3, the driving assembly 5 of the utility model includes bearing support 51, power source 52, output
Gear 53 and screw gear 54.Bearing support 51 is fixed on 1 outer surface of the first lens barrel body, and power source 52 is fixed on bearing support 51
On, in the present embodiment, power source 52 is located at 42 top of drive lead screw, and power source 52 can select motor or motor to provide
Driving force, in the present embodiment, power source 52 use motor.Output gear 53 is connect with power source 52, and power source 52 can be with
Output gear 52 is driven to rotate.Screw gear 54 is located at 53 downside of output gear and is meshed with output gear 53, and screw rod tooth
Wheel 54 is fixed on drive lead screw 42.I.e. power source 52 can drive output gear 53 to rotate, and screw gear 54 is driven to rotate, into
And drive lead screw 42 is driven to rotate.The motor of the utility model can according to need increase gear-box, output gear 53 and screw rod
54 parameter of gear can be adjusted, and realize the adjustment of actuation speed, actuation precision sum, meet the needs of different.
The power zoom device of the utility model realizes leading to the second lens barrel body 2 by setting limition orientation structure 3
To by the way that the driving of driving assembly 5 and the realization of transmission component 4 to the second lens barrel body 2 is arranged, thus by guide function and transmission function
It can separate, the transmission and guiding made is non-interference, advantageously ensures that zoom accuracy and zoom stability.
It is additionally provided with locating part 13 on the first lens barrel body 1 of the utility model, is moved for controlling the maximum of the second lens barrel body 2
Dynamic stroke, avoids the second lens barrel body 1 from falling off from the first lens barrel body 1.
Zooming procedure using the power zoom device of the utility model is as follows:
Power source 52 provides drive force output gear 53 and rotates, and screw gear 54 is driven to rotate, and then drives transmission
Screw rod 42 rotates, and feed screw nut 43 and drive lead screw 42 cooperate, and feed screw nut 43 and the fixed company of the second lens barrel body 2
It connects, when drive lead screw 42 rotates, feed screw nut 43 can be driven to move in the axial direction, drive the second lens barrel body 2 mobile, the
Two lens barrel bodies 2 are equipped with guide part 31, and the first lens barrel body 1 is equipped with guide groove 32 for guiding the second lens barrel body 2 axially
It is mobile, and limit the rotation of the second lens barrel body 2.When the second lens barrel body 2, which is moved to zoom, needs focal length to be used, power source
52 progress are self-locking, and the second lens barrel body 2 is fixed on a corresponding position, complete entire zooming procedure.
The foregoing is merely a schemes of the utility model, are not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.It is all the spirit and principles of the utility model it
Interior, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of power zoom device characterized by comprising
First lens barrel body (1)；
Second lens barrel body (2), setting are slidably connected in the first lens barrel body (1) with the first lens barrel body (1)；
Limition orientation structure (3) is axially moveable in the first lens barrel body (1) for limiting the second lens barrel body (2)；
Transmission component (4) is fixedly connected with the second lens barrel body (2), drives the second lens barrel body (2) movement；
Driving assembly (5) drives the transmission component (4) to act.
2. power zoom device according to claim 1, which is characterized in that the limition orientation structure (3) includes guiding
Part (31) and the guide groove (32) matched with the guide part (31)；
The guide part (31) is arranged on the outer surface of the second lens barrel body (2)；
The central axis of the guide groove (32) and the first lens barrel body (1) is set in parallel in the first lens barrel body (1)
Inner surface.
3. power zoom device according to claim 2, which is characterized in that the guide part (31) is equipped with sleeve
(31a)。
4. power zoom device according to claim 1, which is characterized in that the transmission component (4) includes:
Supporting member (41) is fixed on the first lens barrel body (1)；
Drive lead screw (42) is supported on the supporting member (41)；
Feed screw nut (43) is cooperatively connected with the drive lead screw (42), and is fixedly connected with the second lens barrel body (2).
5. power zoom device according to claim 4, which is characterized in that the first lens barrel body (1) is equipped with along institute
State the axially extending through slot (11) of the first lens barrel body (1)；
The drive lead screw (42) is located above the through slot (11)；
The feed screw nut (43) passes through the through slot (11) and is fixedly connected with the second lens barrel body (2).
6. power zoom device according to claim 4 or 5, which is characterized in that the supporting member (41) includes two phases
Ball bearing (411) to setting and the bearing locking accessory (412) for fixing the ball bearing (411), the driving wire
The both ends of bar (42) are supported on respectively in two ball bearings (411).
7. power zoom device according to claim 6, which is characterized in that the first lens barrel body (1) is equipped with ball
Bearing mounting groove (12).
8. power zoom device according to claim 7, which is characterized in that the driving component (5) includes:
Bearing support (51) is fixed on the first lens barrel body (1)；
Power source (52) is fixedly supported upon on the bearing support (51), provides driving force；
Output gear (53) is connect with the power source (52)；
Screw gear (54) is fixed on the drive lead screw (42), is meshed with the output gear (53).
9. power zoom device according to claim 8, which is characterized in that the power source (52) is motor or motor.
10. power zoom device according to claim 1, which is characterized in that be additionally provided with limit on the first lens barrel body (1)
Position part (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821556658.0U CN208737077U (en) | 2018-09-25 | 2018-09-25 | Electric zoom device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821556658.0U CN208737077U (en) | 2018-09-25 | 2018-09-25 | Electric zoom device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208737077U true CN208737077U (en) | 2019-04-12 |
Family
ID=66034482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821556658.0U Active CN208737077U (en) | 2018-09-25 | 2018-09-25 | Electric zoom device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208737077U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957677A (en) * | 2018-09-25 | 2018-12-07 | 舜宇光学(中山)有限公司 | Power zoom device |
| CN111528771A (en) * | 2020-03-27 | 2020-08-14 | 浙江大学 | Electronic endoscope imaging objective lens zooming adjusting mechanism |
| CN111913268A (en) * | 2020-07-09 | 2020-11-10 | 诚瑞光学(常州)股份有限公司 | Zoom lens |
| CN114236945A (en) * | 2021-10-29 | 2022-03-25 | 歌尔光学科技有限公司 | Optical machine |
-
2018
- 2018-09-25 CN CN201821556658.0U patent/CN208737077U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957677A (en) * | 2018-09-25 | 2018-12-07 | 舜宇光学(中山)有限公司 | Power zoom device |
| CN111528771A (en) * | 2020-03-27 | 2020-08-14 | 浙江大学 | Electronic endoscope imaging objective lens zooming adjusting mechanism |
| CN111528771B (en) * | 2020-03-27 | 2022-02-18 | 浙江大学 | Electronic endoscope imaging objective lens zooming adjusting mechanism |
| CN111913268A (en) * | 2020-07-09 | 2020-11-10 | 诚瑞光学(常州)股份有限公司 | Zoom lens |
| CN114236945A (en) * | 2021-10-29 | 2022-03-25 | 歌尔光学科技有限公司 | Optical machine |
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