CN201207117Y

CN201207117Y - Focus regulating mechanism of digital camera

Info

Publication number: CN201207117Y
Application number: CNU2008201159087U
Authority: CN
Inventors: 詹哲琦; 纪中元
Original assignee: Gigaopto Photonics Co ltd
Current assignee: Gigaopto Photonics Co ltd
Priority date: 2008-05-21
Filing date: 2008-05-21
Publication date: 2009-03-11
Anticipated expiration: 2018-05-21

Abstract

Disclosed is a digital camera focusing mechanism, comprising a base body, a drive motor, a screwed moving piece, a lens frame and a lens. The drive motor is arranged inside an accommodation room and a threaded shaft of the drive motor is arranged inside a screw hole of the screwed moving piece. The external marginal face of the screwed moving piece extends to form an actuator column. An inclined runner is slantingly and concavely arranged on a propping part of the lens frame, corresponding to the actuator column. The actuator column of the screwed moving piece is pressed inside the inclined runner, and the lens is fixedly connected in a trepan bore of the lens frame. In this way, when the screwed moving piece moves under the driving of the drive motor, the actuator column can press the inclined runner and the lens frame can move linearly. Such simple inclined plane motion can enable the lens frame to have focus adjustment action. Meanwhile, the actuator column of the screwed moving piece and the propping part of the lens frame are simple in structure and low in cost.

Description

The focal length adjusting mechanism of digital camera

Technical field

The utility model relates to a kind of focal length adjusting mechanism of digital camera, relates in particular to a kind of being arranged in the digital camera, and is available for users to accurately to adjust the adjusting mechanism of the focal length of camera lens.

Background technology

That traditional mechanical type camera has is bulky, weight is heavy, take in shortcoming such as inconvenience, moreover if not have the Techniques for Photography and the professional knowledge of certain degree, general popular operation that often can't be suitable also obtains desirable photographic effects.

Since digital camera comes out, carrying under one's arms, it has the powerful advantages such as camera function of little, the in light weight and multiple combined type of volume, the traditional mechanical type camera of replacement that digital camera is almost comprehensive already, what is more, derive the function of anti-hand shake and other abundant camera module by electronic chip collocation precision optical machinery, even if to the also left-hand seat easily of off one's beat beginner of photographing.

Be accompanied by the progress of industrial technology and the variation of the market demand, the volume of digital camera is tending towards miniaturization, even be arranged at mobile phone or personal digital assistant (P D A widely, Personal Digital Assistant) portable electronic product such as, yet the whether clear adjustment with lens focus of the image effect of photographic work has inseparable relation.General digital camera all is dependent on the linear movement that gear train stretches camera lens, accurately adjusting the distance between the optical mirror slip, and then obtains the pinpointed focus of user's expection.

General digital camera all carries out the transmission campaign of camera lens with gear trains such as gear or tooth bars, yet, requiring the digital camera volume-diminished to be arranged under the restrictive condition in the electronic products such as mobile phone, the volume of above-mentioned mechanical component is too huge, and its arrangement mode is complicated and have many restrictions, the therefore unfavorable small space that is arranged in the electronic product such as mobile phone.

Moreover, arrangement between each pinion wheel and the tooth bar and engagement must be suitable precisely, in order to making accurate adjustment action, these a little parts must expend quite high manufacturing cost, this cost will directly be reflected in product price, and directly weaken product on the market competitive power, and be unfavorable for that enterprise makes a profit.

Therefore, how satisfying the requirement and the while of the precision drive of focal length adjusting mechanism and reasonably control cost, is the problem that relevant industry is desired to overcome.

Summary of the invention

Fundamental purpose of the present utility model, a kind of focal length adjusting mechanism of digital camera is provided, can makes picture frame carry out accurate linear displacement motion, the profile simple structure of its constituent components by the motion of simple inclined-plane, cost consumption is low, directly promotes the earning capacity of product significantly.

For realizing above-mentioned purpose, the utility model provides a kind of focal length adjusting mechanism of digital camera, and it is arranged in the digital camera, and this focal length adjusting mechanism comprises: a pedestal, and it has an accommodation space; One CD-ROM drive motor, it is arranged in the accommodation space, and this CD-ROM drive motor has a thread spindle; One screw thread moving member, it has a threaded hole and a start post, and the thread spindle of this CD-ROM drive motor is arranged in the threaded hole of this screw thread moving member, and this start post is by the outer edge surface elongation moulding of this screw thread moving member; One picture frame, it has a trepanning and a pressure section, this trepanning connects the rear and front end face of this picture frame and moulding, this pressure section have a pair of should the start post and the oblique oblique chute that is arranged with moulding, the start post of this screw thread moving member presses in this oblique chute; And a camera lens, it is arranged in the trepanning of this picture frame affixedly.

The utlity model has following beneficial effect: when this screw thread moving member carries out displacement by CD-ROM drive motor, this start post can compress this oblique chute and make this picture frame carry out linear displacement, a simple inclined-plane motion can make picture frame carry out the action of accurate adjustment focal length thus, and the profile simple structure of the start post of this screw thread moving member and the pressure section of this picture frame, cost consumption is low, directly promotes the earning capacity of product significantly.

Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the focal length adjusting mechanism of the utility model digital camera;

Fig. 2 is the partial exploded view of the focal length adjusting mechanism of the utility model digital camera;

Fig. 3 is the illustrative view () of the focal length adjusting mechanism of the utility model digital camera;

Fig. 4 is the illustrative view (two) of the focal length adjusting mechanism of the utility model digital camera;

Fig. 5 is the solid combination synoptic diagram of the focal length adjusting mechanism of the utility model digital camera.

Wherein, Reference numeral

1 pedestal

11 accommodation spaces

12 through holes

13 guide pillars

2 CD-ROM drive motor

21 thread spindles

211 external threads

3 screw thread moving members

31 threaded holes

311 internal threads

32 start posts

321 points

33 abutment edges

4 picture frames

41 trepannings

42 guide holes

43 pressure sections

431 oblique chutes

4311 inclined-planes

5 camera lenses

6 cover lid

61 hollow out circular holes

Embodiment

See also Fig. 1 to the focal length adjusting mechanism that Figure 5 shows that the utility model digital camera, it is arranged in the digital camera and moves with the adjustment of carrying out focal length, and this focal length adjusting mechanism includes: a pedestal 1, a CD-ROM drive motor 2, a screw thread moving member 3, a picture frame 4, a camera lens 5 and cover lid 6.

See also Figure 1 and Figure 2, the geometric shape of this pedestal 1 is a square box-structure body generally, and it is used for ccontaining and this CD-ROM drive motor 2 of fixing, this screw thread moving member 3 and this picture frame 4, in the hope of allowing the correct relative motion of making expection of aforesaid assembly.

This pedestal 1 has an accommodation space 11, a through hole 12 and a plurality of guide pillar 13, and this accommodation space 11 is formed in this pedestal 1 for being installed with aforesaid assembly.This through hole 12 connects the internal face of this pedestal 1, and this through hole 12 is the hole of a circle, and it can wear and exercise the stretching motion of expection for camera lens 5 described later, to adjust the distance between the optical mirror slip.

The serve as reasons circular cylinder of internal face elongation moulding of this pedestal 1 of these guide pillars 13, and erectly be arranged in this accommodation space 11, in present embodiment, these guide pillars 13 are relatively set with two, it can be sheathed for the guide hole 42 of picture frame 4 described later, and form the start path of a linear slippage.

This CD-ROM drive motor 2 is arranged in the accommodation space 11 of this pedestal 1, and this CD-ROM drive motor 2 has a thread spindle 21.Have an external thread 211 on this thread spindle 21, this external thread 211 is arranged with moulding around the surface of this thread spindle 21.This thread spindle 21 can carry out the screw displacement campaign by the power of this CD-ROM drive motor 2.

The geometric shape of this screw thread moving member 3 is a sleeve-like configuration generally, and this screw thread moving member 3 has a threaded hole 31, a start post 32 and an abutment edge 33.This threaded hole 31 connects the two ends of these screw thread moving members 3, and is formed with an internal thread 311 in this threaded hole 31, the external thread 211 that 311 pairs of this internal threads should thread spindle 21 and moulding.Therefore, the external thread 211 of this thread spindle 21 can be meshing with each other with the internal thread 311 of this screw thread moving member 3 and cooperate, with the helical motion of expecting.

This start post 32 is by the outer edge surface elongation moulding of this screw thread moving member 3, and this start post 32 has a point 321, and this point 321 takes shape in the end of this start post 32.

This abutment edge 33 is an edge of this screw thread moving member 3, and it is to internal face that should pedestal 1 and moulding, and this abutment edge 33 is resisted against the internal face of this pedestal 1 and can makes relative sliding motion.

The thread spindle 21 of this CD-ROM drive motor 2 is arranged in the threaded hole 31 of this screw thread moving member 3, so, when the thread spindle 21 of CD-ROM drive motor 2 rotates,, can make this screw thread moving member 3 do the reciprocal sliding motion of level by cooperatively interacting of this external thread 211 and this internal thread 311.

This picture frame 4 is a circle frame shape structure generally, and this picture frame 4 has a trepanning 41, a plurality of guide hole 4

2 and one pressure section 43.This trepanning 41 is the hole of a circle, and it is formed at the centre of this picture frame 4 and connects the rear and front end face of this picture frame 4 and moulding.

These guide holes 42 connect the rear and front end of this picture frame 4 in these trepanning 41 adjacents, and are the circular opening of corresponding these guide pillar 13 moulding.In present embodiment, 42 pairs of these guide holes should two guide pillars 13 and be provided with two, and this two guide pillar 13 respectively is arranged in this two guide hole 42, and so, this picture frame 4 can be made the linear sliding motion of expection along the path of this guide pillar 13.

This pressure section 43 takes shape in the outer rim place of this picture frame 4, this pressure section 43 have a pair of should start post 32 and be arranged with the oblique chute 431 of moulding, this oblique chute 431 obliquely crosses at the edge face of this pressure section 43.This oblique chute 431 has two inclined-

planes

4311,4311 pairs on this two inclined-plane should screw thread moving member 3 start post 32 point 321 and constitute a V-arrangement shape generally, this start post 32 presses in the oblique chute 431 of this picture frame 4, and this point 321 and these two inclined-planes, 4311 contact matching, so, this screw thread moving member 3 and this pressure section 43 can be made the inclined-plane motion of expection.

This camera lens 5 is arranged in the trepanning 41 of this picture frame 4 affixedly, and this camera lens 5 is arranged in the through hole 12 of this pedestal 1 partly, and so, this camera lens 5 can follow this picture frame 4 to move jointly.

See also Fig. 2 to shown in Figure 4, when user's desire is adjusted the focal length of camera lens 5, can make the thread spindle 21 of drive motor 2 rotate, and make this screw thread moving member 3 produce horizontal shifts by helical motion, meanwhile, the point 321 of this start post 32 can compress the inclined-plane 4311 of this oblique chute 431 and make the inclined-plane motion, thus inclined-plane motion can make this picture frame 4 together with its shift reciprocately of affixed camera lens 5 before and after making, so, can be accurate be adjusted to the desired best focus position of user.

See also shown in Figure 5ly, this covers lid 6 lid and places on this pedestal 1, and covers this accommodation space 1

This CD-ROM drive motor 2, this screw thread moving member 3 and this picture frame 4 in 1.This covers the hollow out circular hole 61 that lid 6 has the moulding of opening, 61 pairs of this hollow out circular holes should camera lens 5 geometric shape and offer, when this covers lid 6 lid and places on this pedestal 1, this camera lens 5 can be revealed in this hollow out circular hole 61, but with the image of acquisition photographic thing that user's complete display is provided.

Effect that can produce via the utility model and characteristics are as the back:

When this screw thread moving member 3 carries out displacement by CD-ROM drive motor 2, this start post 32 can compress this oblique chute 431 and make this picture frame 4 carry out linear displacement, a simple inclined-plane motion can make picture frame 4 carry out the action of accurate adjustment focal length thus, and the profile simple structure of the start post 32 of this screw thread moving member 3 and the pressure section 43 of this picture frame 4, cost consumption is low, directly promotes the earning capacity of product significantly.

Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims

1, a kind of focal length adjusting mechanism of digital camera, it is arranged in the digital camera, it is characterized in that, and this focal length adjusting mechanism comprises:

One pedestal, it has an accommodation space;

One CD-ROM drive motor, it is arranged in the accommodation space of this pedestal, and this CD-ROM drive motor has a thread spindle;

One screw thread moving member, it has a threaded hole and a start post, and the thread spindle of this CD-ROM drive motor is arranged in the threaded hole of this screw thread moving member, and this start post is by the outer edge surface elongation moulding of this screw thread moving member;

One picture frame, it has a trepanning and a pressure section, this trepanning connects the rear and front end face of this picture frame and moulding, this pressure section have a pair of should the start post and the oblique oblique chute that is arranged with moulding, the start post of this screw thread moving member presses in this oblique chute; And

One camera lens, it is arranged in the trepanning of this picture frame affixedly.

2, the focal length adjusting mechanism of digital camera according to claim 1, it is characterized in that, this pedestal has a plurality of guide pillars that are arranged in this accommodation space, and this picture frame has these guide pillars of a plurality of correspondences and the guide hole of moulding, and these guide pillars are arranged at respectively in these guide holes.

3, the focal length adjusting mechanism of digital camera according to claim 1, it is characterized in that, the thread spindle of this CD-ROM drive motor has an external thread, this external thread is arranged with moulding around the surface of this thread spindle, the setting that is meshed with this internal thread of the internal thread that has a pair of external thread moulding that should thread spindle in the threaded hole of this screw thread moving member, this external thread.

4, the focal length adjusting mechanism of digital camera according to claim 1 is characterized in that, this screw thread moving member has an abutment edge, this abutment edge in this accommodation space against the internal face of this pedestal.

5, the focal length adjusting mechanism of digital camera according to claim 1, it is characterized in that, the start post of this screw thread moving member has a point, this point takes shape in the end of this start post, the oblique chute of this picture frame has two pairs should point and the inclined-plane of moulding, and the point of this start post presses on the inclined-plane of this oblique chute.

6, the focal length adjusting mechanism of digital camera according to claim 1 is characterized in that, also is provided with one and covers lid, and this covers cover cap and places on this pedestal, and covers this CD-ROM drive motor, this screw thread moving member and this picture frame in this accommodation space.

7, the focal length adjusting mechanism of digital camera according to claim 6 is characterized in that, this covers the hollow out circular hole that lid has the moulding of opening, and this camera lens is revealed in this hollow out circular hole.

8, the focal length adjusting mechanism of digital camera according to claim 1 is characterized in that, this pedestal has a through hole, and this camera lens is arranged in the through hole of this pedestal.