CN205301682U

CN205301682U - Optical zoom motor

Info

Publication number: CN205301682U
Application number: CN201521113960.5U
Authority: CN
Inventors: 王建华
Original assignee: Shanghai BL Electronics Co Ltd
Current assignee: Cyprus Shanghai electronic Limited by Share Ltd
Priority date: 2015-12-29
Filing date: 2015-12-29
Publication date: 2016-06-08
Anticipated expiration: 2025-12-29

Abstract

The utility model discloses an optical zoom motor, including the base, the iron -clad is provided with a lens carrier and the 2nd lens carrier in, and one side of a lens carrier is inlayed and is equipped with first magnetite, and one side of the 2nd lens carrier is inlayed and is equipped with the second magnetite, the outside of first magnetite be provided with with the first coil of first magnetite matched with, the outside of second magnetite be provided with with second magnetite matched with second coil, first coil and second coil are installed and are being lain in the circuit board of iron -clad one side, and the circuit board outside is equipped with the yoke, and first coil center is provided with a hall element, and second coil center is provided with the 2nd hall element, a lens carrier and the 2nd lens carrier's and the iron -clad between set up the ball. The utility model discloses a hall element realizes the feedback to because control chip has the memory capability, it is fast consequently to adjust the reaction rate, controls two lens carrier motions respectively, has increased this optical zoom motor's focusing scope.

Description

A kind of optical zoom motor

Technical field

The utility model relates to lens driver, thereby is specifically related to a kind ofly be applied to camera, video camera or have the optical zoom motor to drive lens moving to focus on the equipment such as mobile phone of camera function.

Background technology

Along with the functional diversities of digital product, the digital equipment of video camera or camera is equipped with, as mobile phone, multimedia player etc., obtain high speed development and extensive use. Above-mentioned video camera or camera, can adopt the camera lens of the adjustable or automatic focusing of focal length conventionally, and the process regulating is the position that changes camera lens, for driving lens moving normally to use CD-ROM drive motor. Optical zoom driver changes the focal length of set of lenses by adjustable lens position, thereby reaches the effect of zoom.

Its drive unit of focusing of traditional camera generally includes stepper motor, gear, the member such as cam and connecting rod composition, application number is that the utility model application of CN201210402795.X discloses a kind of mechanical device for high-pixel mobile phone lens, include the stationary magazine creel of supporting and location effect, cam canister and first, two, the three groups of frames and shell and groups of motors, this groups of motors includes focusing motor and zoom motor, it all belongs to miniature high-precision stepper motor, stable drive, accurate positioning, can repeatable accuracy high, described first, two groups of frames are arranged in stationary magazine creel, described cam canister is enclosed within on stationary magazine creel, described first, the two groups of frames are by cam canister and stationary magazine creel is spacing and guiding, one end of described the 3rd group of frames is located in stationary magazine creel, the other end stretches out that stationary magazine creel is connected with focusing motor and surely by focusing on motor driving, lower movement, described zoom motor drives cam canister to rotate, the rotation of cam canister drives first, the two groups of frames are done relative upper, lower movement.

Described first, under the frame of two groups of frames, edge is respectively equipped with first, the second guide shaft group, have first at described cam canister inner surface, the second zoom curved groove group, on the barrel of stationary magazine creel, have first, the second straight-line groove group, the first guide shaft group of described first group of frame 3 enters in the first zoom curved groove group corresponding on cam canister through the first straight-line groove group on stationary magazine creel, the second guide shaft group of described second group of frame enters in the second zoom curved groove corresponding on cam canister through the second straight-line groove group on stationary magazine creel, first, the second guide shaft group is first, in the second straight-line groove group, can only go up, lower movement, in the time of cam canister left-right rotation, first, the second guide shaft group is first, in the second zoom curved groove group along with the track of zoom curved groove moves, and first, under the second straight-line groove group effect, first, the two groups of frames are done relative upper, lower movement, realize optical zoom function, the 3rd group of described frames are provided with a locating hole and a screwed hole, locating hole is positioned on stationary magazine creel by axle, screw rod on screwed hole and focusing motor matches, in the time of focusing revolution, under the effect of screw rod, the locating hole of the 3rd group of frames is positioned on stationary magazine creel 1 by axle, therefore the 3rd group of frames can only be done upper and lower movement, realizes automatic focusing function.

The outside lower end of described cam canister is provided with gear ring, described zoom motor has also been provided with the gear train of transmission gear shift effect, make to be located at motor gear on zoom motor axle by under middle travelling gear effect, by the gear ring on driving gear drives cam canister, make cam canister rotate and drive thus first and second group of frames to do relative moving up and down, this gear train has high transmission ratio---and gearratio is up to 24, and low noise---noise is lower than 40Db, and high efficiency---efficiency reaches 96%. First, second zoom wire casing suite of described cam canister includes three equally distributed zoom curved grooves separately, first, second guide shaft group of first and second group of frames, also include separately three equally distributed guide shafts, each guide shaft enters in corresponding zoom curved groove, form a stable drive, the curvilinear guide system of accurate positioning, in the time of system multisection type optical zoom, has ensured the optical zoom precision of system.

Utility model content

The purpose of this utility model is to provide the optical zoom motor that a kind of light modulation precision is higher.

To achieve these goals, the technical solution of the utility model is: a kind of optical zoom motor, comprise base, the iron-clad being equipped with base, in iron-clad, be provided with first lens carrier and the second lens carrier, one side of first lens carrier is embedded with the first magnetite, and a side of the second lens carrier is embedded with the second magnetite; There is the first coil matching with described the first magnetite in the arranged outside of described the first magnetite, the arranged outside of described the second magnetite has the second coil matching with described the second magnetite, described the first coil and the second coil are arranged on the wiring board that is positioned at iron-clad one side, wiring board outside is provided with yoke, the first hub of a spool is provided with the first Hall element, the second hub of a spool is provided with the second Hall element, first lens carrier and the second lens carrier and iron-clad between ball is set.

According to preferred embodiment of the present utility model, between described first lens carrier top and iron-clad, pad is set.

According to preferred embodiment of the present utility model, described base is quadra structure, the bottom of base arranges round hole, the opening matching with first lens carrier and the second lens carrier is offered at the top of base, one of them side of base comprises two wiring boards installation edge strips that are arranged on these both sides, side, described two wiring boards are installed between edge strip and are formed opening, described two wiring boards are installed edge strip outside towards opening one side direction sunken inside, form groove is installed, on described installation groove, be provided with limited block, the both sides of wiring board are positioned at this installation groove, wiring board both sides are provided with the spacing hole matching with the limited block of described base, wiring board arranged outside yoke, the both sides of described yoke are provided with the semicircular notch matching with the limited block of base, the top of described yoke is also provided with several semicircular notch.

The principle of optical zoom motor is by the principle of faraday's lefft-hand rule, and hot-wire coil produces magnetic field, and produces active force between the magnetic field of magnetite, completes the promotion to camera lens carrier. The position of the Hall element induction magnetite of hub of a spool, output electrical signals, control chip receives the laggard row operation of this signal of telecommunication, and the input current size of coil changes described in output signal control, reaches balance thereby control lens carrier at certain position. The utility model changes the focal length of set of lenses by adjustable lens position, thereby reaches the effect of zoom. Two groups of carriers carry respectively two groups of lens group, control respectively by software, reach the object of zoom. The utility model adopts Hall element to realize feedback, and because control chip has memory capability, therefore reaction speed is fast, and controls respectively two lens carrier motions by two hot-wire coils, has increased the focusing range of this optical zoom motor.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model one embodiment.

Fig. 2 is the explosion figure of Fig. 1.

Fig. 3 is the scheme of installation of yoke and base.

Fig. 4 is the structural representation of wiring board.

Detailed description of the invention

Below in conjunction with accompanying drawing and example, the utility model is elaborated.

Figure comprises: base 1, iron-clad 2, first lens carrier 3, the second lens carrier 4, the first magnetite 5, the second magnetite 6, the first coil 7, the first Hall elements 8, the second coil 9, the second Hall elements 10, ball 11, wiring board 12, pad 13, yoke 14, installs edge strip 15, groove 16 is installed, limited block 17, spacing hole 18, semicircular notch 19, groove 20, external pin portion 21.

As depicted in figs. 1 and 2, a kind of optical zoom motor, comprises base 1, the iron-clad 2 being equipped with base 1, in iron-clad 2, be provided with first lens carrier 3 and the second lens carrier 4, the side that a side of first lens carrier 3 is embedded with the first magnetite 5, the second lens carrier 4 is embedded with the second magnetite 6; There is the first coil 7 matching with described the first magnetite 5 in the arranged outside of described the first magnetite 5, the arranged outside of described the second magnetite 6 has the second coil 9 matching with described the second magnetite, described the first coil 7 and the second coil 9 are arranged on the wiring board 12 that is positioned at yoke iron-clad 2 one sides, wiring board 12 outsides are provided with yoke 14, the first coil 7 centers are provided with the first Hall element 8, the second hub of a spool is provided with the second Hall element 10, first lens carrier 3 and the second lens carrier 4 and base 1 between ball 11 is set.

Between described first lens carrier 3 tops and iron-clad 2 inner sides, pad 13 is set. described base 1 is quadra structure, the bottom of base 1 arranges round hole, the opening coordinating with first lens carrier 3 is offered at the top of base 1, base 1 one of them side comprises two wiring boards installation edge strips 15 that are arranged on these both sides, side, described two wiring boards are installed between edge strip 15 and are formed opening, described two wiring boards are installed edge strip outside and are all caved inward towards opening one side, form groove 16 is installed, on described installation groove 16, be provided with two limited blocks 17, between two limited blocks 17, be also provided with a groove 20, the both sides of wiring board 12 are positioned at this installation groove 16, wiring board 12 both sides are provided with the spacing hole 18 matching with the limited block of described base, wiring board 12 arranged outside yokes 14, the both sides of described yoke 14 are provided with the semicircular notch 19 matching with the limited block of base, the top of described yoke 14 is also provided with several semicircular notch. described wiring board 12 bottoms arrange external pin portion 21, and described external pin portion 21 extend out to outside yoke 14. base 1 is covered with iron-clad 2, described iron-clad 2 is a square casing, the top of iron-clad 2 arranges circular open, base plate is not established in the bottom of iron-clad 2, a side of iron-clad 2 is provided with the wiring board of base 1 two edge strips that edge strip matches is installed, the upper end of described two edge strips is connected with upper sid strip, and the top of described wiring board 12 extends to the top of upper sid strip bottom, and the top of yoke 14 is positioned at the below of upper sid strip.

Wiring board 12 inner sides are welded with the first coil 7 and the second coil 9, the center of the first coil 7 is welded with the first Hall element 8, the center of the second coil 9 is welded with the second Hall element 10, in base 1, put into successively the second lens carrier 4 and first lens carrier 3, the first magnetite 5 that the side setting that described first lens carrier 3 is corresponding with wiring board matches with the first coil 7, the second magnetite 6 that the side setting corresponding with wiring board of described the second lens carrier 4 matches with the second coil 9, between four angles of the second lens carrier 4 and base 1, be provided with ball 11, between four angles of first lens carrier 3 and base 1, be also provided with ball 11, the top of first lens carrier 3 arranges pad 13.

This optical zoom motor can external control module, and the input of described external control module is connected with Hall element, and the output of external control module is connected with coil, and the input of described external control module is all connected with pcb board with output. Pcb board bottom arranges external pin portion and is connected with described external control module.

Hot-wire coil produces magnetic field, and produce active force between the magnetic field of magnetite, promotion lens carrier seesaws, the position of the Hall element induction magnetite of hub of a spool, output electrical signals, external control module receives the laggard row operation of this signal of telecommunication, and the input current size of coil changes described in output signal control, reaches balance thereby control lens carrier at certain position. The utility model, by regulate the position of two lens carrier to regulate the focal length of set of lenses simultaneously, has increased the focusing range of this optical zoom motor.

Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that the concrete enforcement of the utility model is confined to above-mentioned these explanations. For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims

1. an optical zoom motor, comprises base, with the iron-clad that base is equipped with, is provided with first lens carrier and the second lens carrier in iron-clad, and a side of first lens carrier is embedded with the first magnetite, and a side of the second lens carrier is embedded with the second magnetite; There is the first coil matching with described the first magnetite in the arranged outside of described the first magnetite, the arranged outside of described the second magnetite has the second coil matching with described the second magnetite, described the first coil and the second coil are arranged on the wiring board that is positioned at iron-clad one side, wiring board outside is provided with yoke, the first hub of a spool is provided with the first Hall element, the second hub of a spool is provided with the second Hall element, first lens carrier and the second lens carrier and iron-clad between ball is set.

2. by optical zoom motor claimed in claim 1, it is characterized in that: described the second lens carrier is positioned at base top, first lens carrier is positioned at the second lens carrier top, between first lens carrier top and iron-clad, pad is set.

3. by optical zoom motor claimed in claim 2, it is characterized in that: described base is quadra structure, the bottom of base arranges round hole, the opening matching with first lens carrier and the second lens carrier is offered at the top of base, one of them side of base comprises two wiring boards installation edge strips that are arranged on these both sides, side, described two wiring boards are installed between edge strip and are formed opening, described two wiring boards are installed edge strip outside towards opening one side direction sunken inside, form groove is installed, on described installation groove, be provided with limited block, the both sides of wiring board are positioned at this installation groove, wiring board both sides are provided with the spacing hole matching with the limited block of described base, wiring board arranged outside yoke, the both sides of described yoke are provided with the semicircular notch matching with the limited block of base, the top of described yoke is also provided with several semicircular notch.

4. by optical zoom motor claimed in claim 3, it is characterized in that: described wiring board bottom arranges external pin portion, described external pin portion stretches out outside yoke.

5. by optical zoom motor claimed in claim 4, it is characterized in that: described iron-clad is a square casing, the top of iron-clad arranges circular open, a side of iron-clad is provided with the wiring board of base two edge strips that edge strip matches is installed, the upper end of described two edge strips is connected with upper sid strip, the top of described wiring board extends to the top of upper sid strip bottom, and the top of yoke is positioned at the below of upper sid strip.