CN202758123U

CN202758123U - Lens driving device

Info

Publication number: CN202758123U
Application number: CN201220337668.1U
Authority: CN
Inventors: 范婧
Original assignee: AAC Acoustic Technologies Suzhou Co Ltd
Current assignee: AAC Optics Suzhou Co Ltd
Priority date: 2012-07-12
Filing date: 2012-07-12
Publication date: 2013-02-27
Anticipated expiration: 2022-07-12

Abstract

The utility model provides a lens driving device, comprising a lens module, a lens barrel which accommodates the lens module, a housing which accommodates the lens barrel, a coil and elastic pieces which is placed inside the housing and fixed to the lens barrel, and magnetic steel placed inside the housing and a certain distance away from the coil and a magnetic bowl which accommodates the magnetic steel, the housing comprises an upper cover and a base, and the base has a through hole that corresponds to the lens barrel and has a stopping part which protrudes and stretches from an edge of the through hole towards the inside of the lens barrel and abuts against the lens barrel. The lens driving device of the utility model can improve dustproof effects of a product and decrease the initial axis deviation angle of the product, thereby improving the performance of the product.

Description

Lens driving apparatus

[technical field]

The utility model relates to a kind of drive unit, relates in particular to a kind of lens driving apparatus.

[background technology]

Development along with science and technology, the products such as digital camera, mobile phone camera or Digital Video are more and more higher to the requirement of zoom, focusing in the digital vedio recording field, at the image that guarantees high image quality simultaneously, also more and more stricter to structure and the appearance requirement of zoom, focalizer.

The lens driving apparatus relevant with the utility model comprise the camera lens module, accommodate the lens barrel of described camera lens module, accommodate the housing of described lens barrel.But, often have the lens driving apparatus internal dust to drop to the sensor surface of camera lens module and contaminant sensor.

Therefore, be necessary to provide a kind of novel lens driving apparatus.

[utility model content]

The purpose of this utility model is to provide a kind of and can improves dust-proof effect and reduce initial axle center deviation angle, thereby carries high performance lens driving apparatus.

The technical solution of the utility model is as follows:

A kind of lens driving apparatus, it comprises the camera lens module, accommodate the lens barrel of described camera lens module, accommodate described lens barrel housing, place in the described housing and be immobilizated in coil and spring leaf on the described lens barrel, place in the described housing and with described coil mutually across a certain distance magnet steel and the magnetic bowl of accommodating described magnet steel, described housing comprises loam cake and base, described base has the through hole corresponding with described lens barrel, and described base has the stopper section that protrudes out in the described lens barrel from described through hole edge and offset with described lens barrel.

Preferably, described lens barrel comprises the spiral top of inwall and is used for the bottom of fixing described coil and the first spring leaf, and described bottom comprises and connects and surround the platform part on described top and form the fixed part of step from described platform part to downward-extension and with described platform part.

Preferably, described base has two spacing ribs that extend to described outside from described stopper section.

Preferably, have a limited post corresponding with described spacing rib bottom the described lens barrel.

Preferably, described base has the some reference columns that are arranged on the outside, described stopper section.

Preferably, described spring has the some pilot holes corresponding with described reference column.

The beneficial effects of the utility model are: owing to set up the stopper section that supports with lens barrel at base, can prevent that the lens driving apparatus internal dust from dropping to the sensor surface of camera lens module and the structure of contaminant sensor, improved the dust-proof effect of lens driving apparatus, simultaneously, utilize the cooperation of stopper section and camera lens, can reduce the initial axle center deviation angle of product.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of the utility model lens driving apparatus;

Fig. 2 is the three-dimensional combination figure of the utility model lens driving apparatus;

Fig. 3 is the stereographic map of the base of the utility model lens driving apparatus;

Fig. 4 is that Fig. 2 is along the cutaway view Amplified image of A-A line;

Fig. 5 is the base of the utility model lens driving apparatus and the three-dimensional combination figure of lens barrel.

[embodiment]

The utility model is described in further detail below in conjunction with drawings and embodiments.

As shown in Figure 1 and Figure 2, the utility model lens driving apparatus 1 comprises camera lens module (not shown), accommodate the lens barrel 11 of described camera lens module, accommodate the housing 10 of described lens barrel 11, and described housing 10 comprises loam cake 101 and base 102.Described lens driving apparatus 1 also comprises coil 12, the first spring leaf 131, the second spring leaf 132, the magnet steel 14 that is contained in the described housing 10 and the magnetic bowl 15 of accommodating described magnet steel 14, described the first spring leaf 131 is arranged at described lens barrel 11 belows and has some pilot holes 1310, and described the second spring leaf 132 is by described

loam cake

101 and 15 clampings of magnetic bowl.

As shown in Figure 3, Figure 4, described base 102 has the through hole 1020 corresponding with described lens barrel 11 and the stopper section 1021 that protrudes out to described housing 10 inside from the edge of described through hole 1020.The bottom 112 that described lens barrel 11 comprises the spiral top 111 of inwall and is used for fixing described coil 12 and the first spring leaf 131.Described bottom 112 comprises and connects and surround the platform part 1121 on described top 111 and form the fixed part 1122 of steps 1120 from described platform part 1121 to downward-extension and with described platform part 1121.Described the first spring leaf 131 is fixed in described fixed part 1122 bottoms, and described stopper section 1021 is contained in described step 1120 and is held in the bottom of described platform part 1121.Owing to utilized stopper section 1021 to come blocks dust, can reduce the contaminated probability of sensor of camera lens module, simultaneously, structure compared to traditional lens barrel 11 and base 102 common clamping the first spring leafs 131, lens barrel 11 directly contacts cooperation with base 102, can effectively reduce the initial axle center deviation angle of lens driving apparatus 1.

Described coil 12 and the first spring leaf 131 are immobilizated in described lens barrel 11, and described magnetic bowl 15 is accommodated described coil 12 and magnet steel 14, and described coil 12 does not contact with described magnet steel 14.

Described base 102 also comprises from described stopper section 1021 to described housing 10 outside two spacing ribs 1022 that extend and is arranged on 1021 outsides, described stopper section and the some reference columns 1023 corresponding with described pilot hole 1310.Reference column 1023 cooperates with pilot hole 1310, can effectively fix the first spring leaf 131, avoids displacement and the distortion of the first spring leaf 131.

As shown in Figure 5, described lens barrel 11 bottoms have a limited post 111 corresponding with described spacing rib 1022, during assembling, limited post 111 is sticked between described two spacing ribs 1022, can prevent effectively that lens barrel 11 from making 131 distortion of the first spring leaf owing to excessively rotating, and prevents that simultaneously lens barrel from departing from the center.

Above-described only is embodiment of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection domain of the present utility model.

Claims

1. lens driving apparatus, it comprises the camera lens module, accommodate the lens barrel of described camera lens module, accommodate described lens barrel housing, place in the described housing and be immobilizated in coil and spring leaf on the described lens barrel, place in the described housing and with described coil mutually across a certain distance magnet steel and the magnetic bowl of accommodating described magnet steel, described housing comprises loam cake and base, described base has the through hole corresponding with described lens barrel, it is characterized in that: described base has the stopper section that protrudes out in the described lens barrel from described through hole edge and offset with described lens barrel.

2. lens driving apparatus according to claim 1, it is characterized in that: described lens barrel comprises the spiral top of inwall and is used for the bottom of fixing described coil and the first spring leaf, and described bottom comprises and connects and surround the platform part on described top and form the fixed part of step from described platform part to downward-extension and with described platform part.

3. lens driving apparatus according to claim 1 is characterized in that: described base has two spacing ribs that extend to described outside from described stopper section.

4. lens driving apparatus according to claim 3 is characterized in that: have a limited post corresponding with described spacing rib bottom the described lens barrel.

5. lens driving apparatus according to claim 1 is characterized in that: described base has the some reference columns that are arranged on the outside, described stopper section.

6. lens driving apparatus according to claim 5, it is characterized in that: described spring has the some pilot holes corresponding with described reference column.