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Actuator, shutter driving device for camera and method of manufacturing actuator

一种致动器、叶片的技术，应用在照相机、机电装置、制造电动发电机等方向，能够解决转子和输出部件负荷增大、转子和输出部件位置偏移、转子和输出部件接合变弱等问题

Inactive Publication Date: 2008-10-01
SEIKO PRECISION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, even in the case of welding and joining in this way, the joint between the rotor and the output member will become weak due to long-term use, etc., and positional displacement of the rotor and the output member may occur.
In particular, this may occur due to the increase in the load on the rotor and the output member as the shutter speed increases.

Method used

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  • Actuator, shutter driving device for camera and method of manufacturing actuator
  • Actuator, shutter driving device for camera and method of manufacturing actuator
  • Actuator, shutter driving device for camera and method of manufacturing actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. figure 1 It is a figure which shows the structure of the main part of the electromagnetic actuator of this Example.

[0032] The electromagnetic actuator 1 is composed of a stator 10, a rotor 20, a coil 40, and the like.

[0033] The electromagnetic actuator 1 has the following parts: a stator 10, which is formed in a U-shape, and has a first magnetic pole portion 11 and a second magnetic pole portion 12 at both ends of the stator 10; It is magnetized into two different poles and formed into a cylindrical shape; and the coil 40 is wound on the bobbin 41 , and the first magnetic pole part 11 and the second magnetic pole part 12 have mutually different polarities by energization.

[0034] Furthermore, an output member 30 for outputting the rotation of the rotor 20 to the outside is attached to the subject side of the rotor 20 (see FIG. 4 ). Thus, the output member 30 ro...

Embodiment 2

[0062] Next, the electromagnetic actuator of the second embodiment will be described. In addition, the same reference numerals are assigned to the same parts as in the first embodiment described above, and description thereof will be omitted.

[0063] Figure 8 It is a front view of the rotor and the output member of the electromagnetic actuator of Example 2.

[0064] The rotor 20d is formed of a magnetic resin material, that is, a plastic magnet. Specifically, SmFeN magnet powder is mixed with a polyamide resin and molded. In addition, the material of the rotor can also be materials other than those mentioned above. For example, NdFeB, etc. can be used as magnetic powder, and thermoplastic polyphenylene sulfide resin, polyester-polybutylene terephthalate resin, etc. can be used as bonding material. agent resin.

[0065] The rotor 20d is magnetized into an N pole and an S pole, and a hole 23d is formed so as to sandwich the boundaries of the magnetic poles. Similar to the...

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PUM

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Abstract

An actuator includes: a coil for excitation; a stator excited with different magnetic poles by energization of the coil; a rotor magnetized with different magnetic poles in a circumferential direction, and rotated by magnetic force generating between the rotor and the stator; and an outputting member rotated in conjunction with the rotor and outputting rotational movement of the rotor to a member. The outputting member fits onto the rotor, and the rotor has a recess portion at a fitting surface of the rotor. The outputting member is jointed with the rotor so as to have a shape corresponding to the at least one of the recess portion and the projection portion by welding.

Description

technical field [0001] The present invention relates to an actuator, a blade driving device for a camera, and a manufacturing method of the actuator. Background technique [0002] Conventionally, as an actuator for driving a blade of a camera, there is known an actuator having: a rotor; a stator; a coil for exciting the stator; and a coil for transmitting the rotation of the rotor to The output part of the blade. Patent Document 1 discloses an actuator in which the rotor and output member are formed by insert molding. [0003] [Patent Document 1] Japanese Patent Laid-Open No. 2004-191750 [0004] However, in the case of forming the rotor and the output member by insert molding, it is difficult to precisely form the angular position of the output member with respect to the rotor. [0005] Therefore, when joining the rotor and the output member by welding, fine adjustment of the angular position of the output member with respect to the rotor can be performed before welding....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B9/02H02K33/18
CPCY10T29/49012G03B9/10H02K15/03H02K1/30H02K37/16H02K7/14
Inventor 保田彬伊藤彰浩田中正人
Owner SEIKO PRECISION CO LTD