CN102768392A

CN102768392A - Transmission device for optical equipment

Info

Publication number: CN102768392A
Application number: CN2011101143390A
Authority: CN
Inventors: 黄远升
Original assignee: Asia Optical Co Inc
Current assignee: Asia Optical Co Inc
Priority date: 2011-05-04
Filing date: 2011-05-04
Publication date: 2012-11-07
Anticipated expiration: 2031-05-04
Also published as: CN102768392B

Abstract

The invention relates to a transmission device for optical equipment, which comprises a drive unit, a guide part, a frame sleeved on the guide part, a clamping jaw unit, a first elastic part and a second elastic part. The drive unit comprises a screw rod. The clamping jaw unit comprises a main clamping jaw and an assistant clamping jaw and is connected with the frame. The first elastic part is arranged on the frame and constantly keeps the main clamping jaw and the assistant clamping jaw to be close with each other so as to be tightly meshed with the screw rod. The second elastic part is arranged on the clamping jaw unit and constantly keeps the frame to push against the guide part. According to the transmission device, the screw rod is driven to rotate by the drive unit so as to drive the clamping jaw unit to lead the optical device on the frame to traverse the guide part; and the frame constantly pushes against the guide part, so that, the frame does not cause shake to result in deviation in optical imaging when being in movement.

Description

The gearing of optical equipment

Technical field

The invention relates to a kind of gearing, be meant a kind of gearing of optical equipment especially.

Background technology

Optical equipment on the market such as camera, video camera etc. need move eyeglass to the appropriate location by gearing when focusing, use to reach the focal length of being desired, so the design precision of gearing, will influence imaging effect.

Consult Fig. 1 and Fig. 2; Known optical equipment gearing; Openly number shown in 201035670 like the TaiWan, China patent that the applicant applied for, comprise screw rod 11, guide member 12, be sheathed on framework 13 on this guide member 12, be arranged at the jaw unit 14 on this framework 13, and elastic component 15.This jaw unit 14 comprises main jaw 141, secondary jaw 142; Reach the module 143 that is arranged at 141,142 of this major and minor jaws respectively; It is adjacent to each other and drive this module 143 that these elastic component 15 perseverances push away this major and minor jaw 141,142; And then this pair jaw 142 is resisted against on this screw rod 11, produce back clearance when avoiding this major and minor jaw 141,142 and 11 engagements of this screw rod.

The stroke out of true that has produced though above-mentioned patent has solved the back clearance of these screw rod 11 engagements; Yet cause the factor of this gearing precision; Except the engagement problem of this screw rod 11, because have the gap in this framework 13 and this guide member 12, and this framework 13 articulates into two linkage assemblys with this jaw unit 14; So this framework 13 can be done rocking by a small margin in the gap, influence imaging because of departing from optical axis.

Summary of the invention

The technical matters that the present invention will solve is, can produce the defective of rocking to the framework of optics gearing in the prior art, and a kind of gearing that can reduce the optical equipment that framework rocks is provided.

The technical scheme that the present invention is adopted for its technical matters of solution is, a kind of gearing of optical equipment is provided, and comprises driver element, guide member, framework, jaw unit, first elastic component and second elastic component.This driver element comprises the screw rod that is provided with along axis, and drives the actuator that this screw rod rotates around this axis.This guide member is to laterally arrange with this screw rod.This framework is connected in this guide member also can be along this axis direction slippage.This jaw unit is connected in this framework; And comprise main jaw, secondary jaw; And module; This main jaw has the hinged arm that extends vertically, and this pair jaw is sheathed on this hinged arm and can rotates with respect to this main jaw, and this major and minor jaw is to be engaged in this screw rod; This module has plural number and is arranged at this main jaw and secondary jaw wherein one and have the cam member of dip plane respectively, and plural number is arranged at this main jaw and another person of secondary jaw and distinguishes slidably the driven member with these dip plane butts.This first elastic component is sheathed on the frame bar of this jaw unit, and permanent this major and minor jaw that keeps is adjacent to each other, and each driven member is slided along this dip plane, and then this pair jaw is radially reached axially by supporting this screw rod simultaneously.This second elastic component is sheathed on the hinged arm of this jaw unit, and an end precompressed is resisted against this framework, and other end precompressed is resisted against the screw rod of this driver element, and permanent this framework that keeps is leaned on to this guide member.

Effect of the present invention is: by the elastic force of this second elastic component, eliminate rocking relatively between this framework and this guide member.

Description of drawings

Fig. 1 is a three-dimensional exploded view, and the gearing of known optical equipment is described;

Fig. 2 is a partial sectional view, and the gearing of known optical equipment is described, produces back clearance when solving jaw unit and screw engages;

Fig. 3 is a stereographic map, and preferred embodiment of the present invention is described;

Fig. 4 is a partial sectional view, explains that first elastic component of the present invention is resisted against the secondary jaw and the second pivot ear;

Fig. 5 is a side view, explains that second elastic component of the present invention is resisted against framework and screw rod; And

Fig. 6 is a side view, and secondary jaw of the present invention, first elastic component and this second elastic component are described.

Embodiment

About aforementioned and other technology contents, characteristics and effect of the present invention, in the detailed description of a preferred embodiment of following conjunction with figs., can clearly appear.

Consult Fig. 3, Fig. 4 and Fig. 5, the preferred embodiment of the gearing of optical equipment of the present invention comprises driver element 2, guide member 3, framework 4, jaw unit 5, first elastic component 6 and second elastic component 7.

This driver element 2 comprises the screw rod 21 that is provided with along axis L, and drives the actuator 22 of this screw rod 21 around this axis L rotation, and in the present embodiment, this actuator 22 can be motor.

This guide member 3 laterally arranges along direction and this screw rod 21 of this axis L, and in the present embodiment, this guide member 3 is guide rods.

This framework 4 is to be used for the bearing optical assembly and to comprise the first pivot ear 41 and the second pivot ear 42 that is provided with at interval vertically, and this framework 4 also comprises the trepanning 43 that can be sheathed on this guide member 3, and this framework 4 can freely be slided along this axis L direction.

This jaw unit 5 comprises main jaw 51, secondary jaw 52, and module 53.This main jaw 51 has vertically the hinged arm that extends 511, first end face 512, first side arm 513, second side arm 514 and the 3rd side arm 515, and this pair jaw 52 has second end face 521, the 3rd end face 522, pivoted hole 528 (consulting Fig. 6) and jig arm 529.This pair jaw 52 is sheathed on this hinged arm 511 by this pivoted hole 528, is articulated in rotationally on this main jaw 51, and in addition, this main jaw 51 also is articulated on this first pivot ear 41 and this second pivot ear 42 by this hinged arm 511 rotationally.This first end face 512 and this second end face 521 against each other, and this second end face 521 is settings opposite each other with the 3rd end face 522.Second side arm 514 of this main jaw 51 and the 3rd side arm 515 are each other vertically at interval and be engaged in a side of this screw rod 21; 513 opposite sides that are engaged in this screw rod 21 of this first side arm; The jig arm 529 of this pair jaw 52 is between this second side arm 514 and the 3rd side arm 515; And relative with this first side arm 513, wherein, this first side arm 513, this second side arm 514, the 3rd side arm 515 distinctly have the threaded portion 54 of meshing with this screw rod 21 with this jig arm 529.

Consult Fig. 6 simultaneously, be formed with the surrounding wall 523 around this pivoted hole 528 on the 3rd end face 522 of this pair jaw 52, the inner peripheral surface of this surrounding wall 523 is step shape; And define first groove 524 and second groove 525; Wherein, this first groove 524 is away from the 3rd end face 522, and this second groove 525 is close to the 3rd end faces 522; And the circle footpath of this second groove 525 is less than the circle footpath of this first groove 524; In addition, this surrounding wall 523 is the continuous shape of non-whole circle, also has upper cut 526 and lower cut 527.

This module 53 has the cam member 534 that plural number is arranged at this main jaw 51 and has dip plane 531 respectively, and plural number be arranged at this pair jaw 52 and respectively slidably with the driven member 535 of these dip plane 531 butts.Each dip plane 531 has deep end 532 and shallow end 533, and each driven member 535 can be free to slide in the deep end of the dip plane corresponding with it 531 532 and shallow end 533.In the present embodiment, these driven members 535 are hemispherical structure.

This first elastic component 6 is sheathed on this hinged arm 511 and an end is resisted against this second pivot ear 42, and the other end is resisted against this first groove 524.This first elastic component 6 is permanent to keep this major and

minor jaw

51,52 adjacent to each other; Make each driven member 535 move to deep end 532 along the shallow end 533 of this dip plane 531; Drive this screw rod 21 of jig arm 529 rotation directions of this pair jaw 52, this main jaw 51 can be arranged in pairs or groups with this pair jaw 52 each other be engaged in this screw rod 21 tightly.In the present embodiment, this first elastic component 6 is a compression spring.

In the present embodiment, this second elastic component 7 is for torsionspring and comprise circulation portions 71, reaches the first end pin 72 and the second end pin 73 that extend outwardly from this circulation portions 71.The circulation portions 71 of this second elastic component 7 is arranged in second groove 525 of this pair jaw 52 and is sheathed on this hinged arm 511 simultaneously, and its first end pin 72 stretches out from this this upper cut 526 and this lower cut 527 respectively with the second end pin 73.These first end pin, 72 precompressed of this second elastic component 7 are resisted against this framework 4, and these second end pin, 73 precompressed are resisted against the screw rod 21 of this driver element 2, and permanent this framework 4 that keeps of its elastic force is by supporting this guide member 3.

By combinations thereof, operational motion of the present invention is:

The actuator 22 of this driver element 2 drives this screw rod 21 when this axis L rotates, and draws the threaded portion 54 of this major and

minor jaw

51,52, and then drives moving back and forth of this framework 4, and the optical module on this framework 4 just can move by this, and imaging is adjusted.

Via above-mentioned explanation, can the present invention be summarized as follows compared to the advantage of known preceding case:

Clearance G as shown in Figure 5, that the trepanning 43 of this framework 4 and this guide member are 3, perseverance remains on the right side by supporting this guide member 3 to make this framework 4 by the elastic force perseverance of this second elastic component 7.When the actuator of this driver element 2 22 drives these screw rods 21 when this axis L rotates, these major and

minor jaw

51,52 these frameworks 4 of traction move, because this framework 4 is permanent in to this guide member 3; Therefore this framework 4 just can not produce and rock; Thus, with the precision of lifting gear significantly, make imaging effect even more ideal; In addition, the present invention also can further reduce the noise that rocks between this framework 4 and this guide member 3.

What deserves to be mentioned is that this second elastic parts 7 is not limited to be arranged on 42 in this pair jaw 52 and this second pivot ear, also can be arranged between this main jaw 51 and this first pivot ear 41.

The above is merely preferred embodiment of the present invention, can not limit the scope that the present invention implements with this, and the simple equivalent of promptly doing according to claim of the present invention and invention description generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.

Claims

1. the gearing of an optical equipment is characterized in that, comprises:

Driver element comprises the screw rod that is provided with along axis, and drives the actuator that this screw rod rotates around this axis;

Guide member is to laterally arrange with this screw rod;

Framework, being connected in this guide member also can be along this axis direction slippage;

The jaw unit; Be connected in this framework; And comprise main jaw, secondary jaw, and module, this main jaw has the hinged arm that extends vertically; This pair jaw is sheathed on this hinged arm and can rotates with respect to this main jaw; And this major and minor jaw is to be engaged in this screw rod, and this module has plural number and is arranged at this main jaw and secondary jaw wherein one and have the cam member of dip plane respectively, and plural number is arranged at this main jaw and another person of secondary jaw and distinguishes slidably the driven member with these dip plane butts;

First elastic component is sheathed on the frame bar of this jaw unit, and permanent this major and minor jaw that keeps is adjacent to each other, and each driven member is slided along this dip plane, and then this pair jaw is radially reached axially by to this screw rod simultaneously; And

Second elastic component is sheathed on the hinged arm of this jaw unit, and an end precompressed is resisted against this framework, and other end precompressed is resisted against the screw rod of this driver element, and permanent this framework that keeps is leaned on to this guide member.

2. according to the gearing of the described optical equipment of claim 1, it is characterized in that this second elastic component is a torsionspring, and has circulation portions, reach the first end pin and the second end pin that extend outwardly from this circulation portions.

3. according to the gearing of the described optical equipment of claim 2, it is characterized in that this framework also comprises the first pivot ear and the second pivot ear that is provided with at interval vertically, this main jaw is to be articulated in rotationally on this first, second pivot ear by this hinged arm.

4. according to the gearing of the described optical equipment of claim 3, it is characterized in that the main jaw of this jaw unit has first end face; The secondary jaw of this jaw unit has second end face, opposite the 3rd end face that is provided with this second end face; And supply the sheathed pivoted hole of this hinged arm, and being formed with surrounding wall on the 3rd end face around this pivoted hole, the inner peripheral surface of this surrounding wall is step shape and defines first groove and second groove; This first groove is away from the 3rd end face; Contiguous the 3rd end face of this second groove, and the circle footpath of this second groove is less than the circle footpath of this first groove, and the circulation portions of this second elastic component is to be arranged in second groove of this jaw unit.

5. according to the gearing of the described optical equipment of claim 4, it is characterized in that this surrounding wall is the continuous shape of non-whole circle, also has upper cut and lower cut, and this first end pin and this second end pin stretch out from this upper cut and this lower cut respectively.

6. according to the gearing of the described optical equipment of claim 4, it is characterized in that this first elastic component, one end is resisted against this second pivot ear, the other end is resisted against first groove of this jaw unit simultaneously.

7. according to the gearing of the arbitrary described optical equipment of claim 4 to 6, it is characterized in that these cam members are to be arranged on this first end face, these driven members are to be arranged on this second end face.

8. according to the gearing of the described optical equipment of claim 7; It is characterized in that; This main jaw also has first side arm, second side arm and the 3rd side arm; This second side arm and the 3rd side arm each other vertically at interval and be engaged in a side of this screw rod, and this first side arm is engaged in the opposite side of this screw rod.

9. according to the gearing of the described optical equipment of claim 8, it is characterized in that this pair jaw also has jig arm, this jig arm is between this second side arm and the 3rd side arm, and relative with this first side arm.

10. according to the gearing of the described optical equipment of claim 9, it is characterized in that this first side arm, this second side arm, the 3rd side arm and this jig arm have the threaded portion with this screw engages individually.