CN2837894Y

CN2837894Y - Telescopic drive structure for lens

Info

Publication number: CN2837894Y
Application number: CNU2005201051717U
Authority: CN
Inventors: 林文德
Original assignee: Genius Electronic Optical Co Ltd
Current assignee: Genius Electronic Optical Co Ltd
Priority date: 2005-08-23
Filing date: 2005-08-23
Publication date: 2006-11-15
Anticipated expiration: 2015-08-23

Abstract

The utility model relates to a telescopic drive structure of a lens, which comprises a basal seat, a drive device and an imaging lens device, wherein the inner part of the basal seat forms a plurality of containing spaces and positioning components. The drive device is arranged in each containing space of the basal seat, and is provided with a drive motor and a power conducting component. The drive motor is used for supplying power, and the power conducting component is provided with a linking axis. One end of the linking axis is connected with the drive motor, and is driven by the drive motor, and the other end of the linking axis forms a helical conducting segment. The imaging lens device is arranged in each containing space of the basal seat, and is limited by the positioning components so as to make a reciprocating displacement between a first position and a second position only along a preconcerted axial direction. The imaging lens device forms a helical linking segment which is mutually screwed with the conducting segment. Thus, the linking axis can be driven to rotate when the drive motor supplies the power. By driving the linking segment which is mutually screwed with the conducting segment, the conducting segment drives the imaging lens device to make a reciprocating displacement between the first position and the second position.

Description

Camera lens telescopic drive structure

Technical field

The utility model is relevant with camera lens, more detailed is meant a kind of camera lens telescopic drive structure.

Background technology

For satisfying the facility that the modern uses and carries, it has been development trend towards microminaturization that most electronic product consumption electronic products are more contained, and has to obtain the mobile phone that image component mostly is the product of camera lens such as camera, can takes a picture ... etc. no exception.

But, since camera lens need by by flexible adjustment to carry out the change of focal length, and make the demand that can more meet the user that presents of image, but with general present camera lens, the flexible stroke of its camera lens, be by reaching by the cooperation that utilizes a bevel gear set or conical gear group, but because the cooperation volume of this kind structure is still excessive, can't reduce volume effectively, and be not inconsistent the trend of holding back that shows of miniaturization, and this kind structure not only manufacturing cost is higher, and when running, single-pass is crossed the cooperation by bevel gear set or conical gear group, will cause the stability of camera lens when flexible comparatively not good.

The utility model content

In view of this, fundamental purpose of the present utility model is that a kind of camera lens telescopic drive structure is being provided, and it is less that it is cheap for manufacturing cost, volume takes up room.

Another purpose of the present utility model is to provide a kind of camera lens telescopic drive structure, and its running stability is preferable.

For reaching above-mentioned purpose, the utility model provides a kind of camera lens telescopic drive structure, includes: a pedestal, inside are formed with the accommodation space and the positioning component of plural number; One drive unit, be to be arranged in the accommodation space of this pedestal, have a CD-ROM drive motor and a power conducting subassembly, this CD-ROM drive motor is in order to provide power, this power conducting subassembly has a couple axle, this couple axle one end is to be connected with this CD-ROM drive motor and to be driven, and the other end of this couple axle is formed with a spiral conductive sections; One imaging lens device, be to be arranged in the accommodation space of this pedestal, and limited by this positioning component and only can axially make primary importance to the shift reciprocately between the second place along predetermined one, this imaging lens device is formed with a spiral interlock section, this interlock section is to be spirally connected mutually with this conductive sections, make and when this CD-ROM drive motor provides power, can drive the couple axle rotation, with by driving the interlock section that is spirally connected mutually, be installed on primary importance to carrying out reciprocal displacement between primary importance and drive this imaging lens by conductive sections.

Indirect spur gear in the utility model, mainly be in order to change the rotating speed of this active spur gear, therefore the rotating speed as the active spur gear can meet demand, then this active spur gear directly can be carried out bridle joint with this passive spur gear, and need not the member of this indirect spur gear.

Because the utility model is between CD-ROM drive motor and camera lens main body, be to adopt spur gear to be cooperated transmission, therefore in the process of this camera lens main body displacement, just can pass through by the preferable factor effect of this spur gear run stability, make the power of conduction comparatively stable, and because spur gear has the comparatively cheap characteristic of manufacturing cost compared to other tooth kind, and can reduce the cost of making, and utilize the cooperation transmission of spur gear, the required space reduction of holding gear can be made, and the in addition miniaturization more of whole volume can be made; And be spirally connected and the elasticity of this buffering pressure part presses effect by the internal and external threads that is spirally connected by this conductive sections and this interlock section, can not only make this camera lens main body when displacement, reach the effect that stability is preferable and stroke is short, more can cushion the accurate location that pressure part is guaranteed this camera lens main body by this.

Description of drawings

For further understanding and approval being arranged, enumerate following preferred embodiment now, and cooperate the graphic back that is illustrated in feature of the present utility model and purpose:

Fig. 1 is the three-dimensional thin portion exploded view of the utility model one preferred embodiment;

Fig. 2 is the three-dimensional big portion constitutional diagram of preferred embodiment shown in Figure 1;

Fig. 3 is the side illustrative view of preferred embodiment shown in Figure 1; It mainly is to show that camera lens is the state of condensation;

Fig. 4 is the side illustrative view of preferred embodiment shown in Figure 1; It mainly is to show that camera lens is the state of extension.

[primary clustering symbol description]

Camera lens telescopic drive structure 100

Pedestal 10 first housings 11

Second housing, 12 positioning components 13

Drive unit 20 moving motors 21

Active spur gear 211 web members 22

Transmission Part 23 power conducting subassemblies 24

Indirect spur gear 241 couple axles 242

Axostylus axostyle 243 conductive sections 244

Buffering pressure part 25 passive spur gears 245

Imaging lens device 30 camera lens main bodys 31

Groove 311 moving parts 32

321 tested 34 of interlock sections

Sensing apparatus 40

Embodiment

Seeing also Figure 1 and Figure 2, is a kind of camera lens telescopic drive structure 100 that the utility model one preferred embodiment is provided, and it consists predominantly of a pedestal 10, a drive unit 20, an imaging lens device 30 and a sensing apparatus 40, wherein:

This pedestal 10, have one first housing 11 and one second housing 12, this first and second housing the 11, the 12nd, the mode that can cover be snapping or the application of force and separated in addition, this first and second housing 11,12 is laid with plural grid spacer and formed accommodation space respectively at the pre-position, can be installed with for other constituent components.

This drive unit 20 has a CD-ROM drive motor 21, a connection piece 22, a Transmission Part 23, a power conducting subassembly 24 and a buffering pressure part 25; Wherein, this CD-ROM drive motor 21 is the drive motor of a microminaturization, by ccontaining and be fixed in the accommodation space of this pedestal 10, and these CD-ROM drive motor 21 1 ends are connected with an active spur gear 211 that can rotate synchronously, are can be subjected to the effect of this CD-ROM drive motor 21 and rotation synchronously; This web member 22 is a splicing ear, be to be electrically connected on this CD-ROM drive motor 21, and part is exposed to outside this pedestal 10; This Transmission Part 23 is to be connected on the part that this web member 22 exposes, can be connected with other control circuit, in order to the signal of transmission controlling and driving motor 21 starts to this CD-ROM drive motor 21; This power conducting subassembly 24 has an indirect spur gear 241 and a couple axle 242, this couple axle 242 has an axostylus axostyle 243, one is formed at the conductive sections 244 on 243 1 sections of this axostylus axostyles, this conductive sections 244 is one to be formed at the external thread on this axostylus axostyle 243, an and passive spur gear 245, this passive spur gear 245 is to be connected on the other end of this axostylus axostyle 243, this couple axle 242 is to be arranged in this pedestal 10, and this indirect spur gear 241 is bridle joints 245 of this active spur gear 211 and this passive spur gears, make when this active spur gear 211 is subjected to the drive of this CD-ROM drive motor 21 and rotates, can make this couple axle 242 can carry out the rotation in original place by driving on this passive spur gear 245 by driving this indirect spur gear 241; This buffering pressure part 25 is a compression spring.

This imaging lens device 30 has a camera lens main body 31, a moving part 32 and one tested 33; The profile of this camera lens main body 31 generally is a tubular, and in its two opposite sides Bian Chu, be formed with an axially extended arcuation groove 311 respectively, make and this camera lens main body 31 can be contained in this pedestal 10, and by the cylindric positioning component 13 mutual butts in this each arcuation groove 311 and this pedestal 10, this camera lens main body 31 just can be concerned by the butt by 13 of this arcuation groove 311 and this positioning components, and only can do the displacement of single axial; This moving part 32 is extended by a side of this camera lens main body 31 to form, and this moving part 32 and be formed with an interlock section 321, and this interlock section 321 is an internal thread, is that the conductive sections 244 with this drive unit 20 is spirally connected; 25 of the buffering pressure parts of this drive unit 20 are to press on this moving part 32; This tested 33 is to be convexly set in outside this moving part 32.

This sensing apparatus 40, be to be arranged in the accommodation space of this pedestal 10, can be in order to tested 33 position of this imaging lens device 30 of sensing, so will this position signalling of tested 33 by transferring to by a Transmission Part (not shown) that is connected with this sensing apparatus 40 in the extraneous control circuit.

So, above-mentioned be the utility model provide a preferred embodiment camera lens telescopic drive structure 100 the main composition important document and form kenel, then be described below as flowing mode of the present utility model again:

See also Fig. 3 and shown in Figure 4, the state that in camera lens main body 31 presents, contracts (as shown in Figure 3), and desire is when outwards becoming the state of upholding (desire obtains suitable imaging by this) (as shown in Figure 4) with this camera lens main body 31 by interior state change of contracting, at first by the control circuit in the external world with signal or power by being input into this web member 22 to this CD-ROM drive motor 21 by this Transmission Part 23, this moment, this CD-ROM drive motor 21 just can entry into service, and then drive this active spur gear 211 and be rotated synchronously, and when this active spur gear 211 rotates, just can drive this indirect spur gear 241 simultaneously rotates synchronously, and rotate by these indirect spur gear 241 these passive spur gears 245 of drive simultaneously, enable to impel these axostylus axostyle 243 synchronous original places to rotate by this passive spur gear 245, the conductive sections external thread 244 that is formed on this axostylus axostyle also can be rotated, and this moment since this camera lens main body 31 concerned by the butt of 13 of its groove 311 and this positioning components and can't rotate, make its conductive sections 244 just can drive the displacement that this moving part 32 is made appropriateness by this interlock section 321, and drive the displacement (as shown in Figure 4) that this camera lens main body 31 is done outside extension by this moving part 32 simultaneously, promptly be moved to the second place (as shown in Figure 4) that is stretched condition by the primary importance (as shown in Figure 3) that originally is the recessed shape attitude; And work as this moving part 32 in displacement stroke, the elastic force that can be subjected to this buffering pressure part 25 presses, this moving part 32 can be carried out with stable status very in displacement stroke, and by the relation of being spirally connected by this conductive sections 244 and interlock section 321, can make that the required stroke of displacement is shorter, to reach displacement location effect accurately; When these moving part 32 these camera lens main bodys 31 of drive are moved to the precalculated position, this sensing apparatus 40 just can be sent this tested 33 position signalling to the control circuit in the external world with signal by this sensing apparatus 40, the signal that makes extraneous control circuit will stop these CD-ROM drive motor 21 runnings is assigned to this CD-ROM drive motor 21 by this Transmission Part 23, thus, when this CD-ROM drive motor 21 stops operating, just can make this camera lens main body 31 keep and be fixed on the preposition, with demand in response to the user.

Moreover, when user's desire moves to primary importance recessed shape attitude with camera lens main body 31 by second place stretched condition, just impel this CD-ROM drive motor 21 counter-rotatings, make by active spur gear 211 power is conducted on this indirect spur gear 241, the passive spur gear 245, and impel this couple axle 242 to reverse, make this moving part 32 just can drive these camera lens main body 31 withdrawals and be moved on the primary importance.

In addition, indirect spur gear in the utility model mainly is in order to changing the rotating speed of this active spur gear, and therefore as initiatively the rotating speed of spur gear can meet demand, then this active spur gear directly can be carried out bridle joint with this passive spur gear, and need not the member of this indirect spur gear.

Claims

1. a camera lens telescopic drive structure is characterized in that, includes:

One pedestal, inside are formed with the accommodation space and the positioning component of plural number;

One drive unit, be to be arranged in the accommodation space of this pedestal, have a CD-ROM drive motor and a power conducting subassembly, this CD-ROM drive motor is in order to provide power, this power conducting subassembly has a couple axle, this couple axle one end is to be connected with this CD-ROM drive motor and to be driven, and the other end of this couple axle is formed with a spiral conductive sections;

One imaging lens device, be to be arranged in the accommodation space of this pedestal, and limited by this positioning component and only can axially make primary importance to the shift reciprocately between the second place along predetermined one, this imaging lens device is formed with a spiral interlock section, this interlock section is to be spirally connected mutually with this conductive sections, make and when this CD-ROM drive motor provides power, can drive the couple axle rotation, with by driving the interlock section that is spirally connected mutually, be installed on primary importance to carrying out reciprocal displacement between primary importance and drive this imaging lens by conductive sections.

2. according to the described camera lens telescopic drive of claim 1 structure, it is characterized in that described this pedestal has one first housing and one second housing, this first and second housing is the mode that can cover snapping or the application of force and separated in addition; This positioning component is to be cylindric, and the side of this imaging lens device then is formed with corresponding arc groove, by by the cooperating of this positioning component and this arc groove, makes this imaging lens device only can make the shift reciprocately of single axial.

3. according to the described camera lens telescopic drive of claim 1 structure, it is characterized in that, one end of described this CD-ROM drive motor is connected with an active spur gear, one end of this couple axle then is formed with a passive spur gear, be to interconnect, make this passive spur gear can be subjected to the drive of this active spur gear and rotate with this active spur gear.

4. according to the described camera lens telescopic drive of claim 3 structure, it is characterized in that, described this drive unit has more an indirect spur gear, be connected between this active spur gear and this passive spur gear, in order to the power transmission that will be somebody's turn to do spur gear initiatively to this passive spur gear.

5. according to the described camera lens telescopic drive of claim 1 structure, it is characterized in that described this drive unit has more an a connection piece and a Transmission Part; This web member is to be electrically connected on this CD-ROM drive motor, and part is exposed to outside this pedestal; This Transmission Part is to be connected on the part that this web member exposes, and is connected with a control circuit in the external world, in order to transmission controlling and driving motor start whether signal to this CD-ROM drive motor.

6. according to the described camera lens telescopic drive of claim 1 structure, it is characterized in that described this conductive sections is an external thread, this interlock Duan Weiyi internal thread.

7. according to the described camera lens telescopic drive of claim 1 structure, it is characterized in that described drive unit has more a buffering pressure part that possesses elastic force, is to press on this imaging lens device.

8. according to the described camera lens telescopic drive of claim 1 structure, it is characterized in that described this imaging lens device has a camera lens main body and a moving part; At least one side edge of this camera lens main body, be formed with an axially extended groove, making can be by the mutual butt of the positioning component of groove and this pedestal, make this camera lens main body only can make the shift reciprocately of single axial, this moving part is extended by a side of this camera lens main body to form, and this interlock section is to be formed on this moving part.

9. according to the described camera lens telescopic drive of claim 1 structure, it is characterized in that, more include a sensing apparatus, is to be arranged in the accommodation space of this pedestal, can be in order to the position of this imaging lens device of sensing, so with signal by transferring in the extraneous control circuit.

10. according to the described camera lens stretching structure of claim 9, it is characterized in that described this imaging lens device has one tested, is to supply its position of this sensing device senses.