U.S. patent application number 12/617990 was filed with the patent office on 2011-05-19 for magnet array member with more than four poles and shutter.
This patent application is currently assigned to Vi-Tai Technology Co., Ltd.. Invention is credited to Chao-Jung Chiang, Kun-Feng Chiang, Yi-Hao Fan, Kao-Chi Liu.
Application Number | 20110116783 12/617990 |
Document ID | / |
Family ID | 44011355 |
Filed Date | 2011-05-19 |
United States Patent
Application |
20110116783 |
Kind Code |
A1 |
Liu; Kao-Chi ; et
al. |
May 19, 2011 |
MAGNET ARRAY MEMBER WITH MORE THAN FOUR POLES AND SHUTTER
Abstract
A magnet array member with more than four poles is used for
being mounted on a shutter of a camera module of a portable mobile
communication device, adjacent to one side of a yoke iron of the
shutter. The magnet array member includes a disc portion and a
driving portion. The disc portion has more than four N poles and S
poles, and an annular side face and opposite first end face and
second end face. The driving portion protrudes from one of the
first end face and the second end face of the disc portion in a
vertical direction. Since the driving portion protrudes from one
end face of the disc portion, the disc portion can form more than
four N poles and S poles when magnetized, thereby being convenient
for mass production.
Inventors: |
Liu; Kao-Chi; (Taipei City,
TW) ; Fan; Yi-Hao; (Nanzhuang Township, TW) ;
Chiang; Chao-Jung; (Hsinchu City, TW) ; Chiang;
Kun-Feng; (Taipei City, TW) |
Assignee: |
Vi-Tai Technology Co., Ltd.
Chung-Ho City
TW
Kao-Chi Liu
Taipei City
TW
|
Family ID: |
44011355 |
Appl. No.: |
12/617990 |
Filed: |
November 13, 2009 |
Current U.S.
Class: |
396/463 ;
310/156.43 |
Current CPC
Class: |
G03B 9/14 20130101 |
Class at
Publication: |
396/463 ;
310/156.43 |
International
Class: |
G03B 9/14 20060101
G03B009/14; H02K 21/24 20060101 H02K021/24 |
Claims
1-2. (canceled)
3. A shutter mechanism of a camera module, comprising: a base,
having an aperture formed thereon and two pivot columns; two
electromagnetic valves, each electromagnetic valve comprising a
magnetic array member, a yoke iron, and a coil, the magnet array
member including a disc-shape body having a pivoting slot defined
at the rotational axis thereof and a driving member protruding from
the disc surface of the disc-shape body, wherein the disc-shape
body includes more than four radially defined interlaying magnetic
pole regions, wherein the magnetic array member is rotatably
disposed on the pivot columns of the base, the yoke iron being
disposed on the base alongside of the magnet array member and
abreast of the peripheral of the base, the coil being windingly
disposed on the yoke iron; a first blade, pivotably disposed on the
base and having a recessed structure, wherein the driving member of
one of the magnet array member engages the recessed structure of
the first blade for driving the first blade to selectively expose
the aperture; a pair of second blades, each pivotably disposed on
the base and having a recessed structure, wherein the driving
member of the other magnet array member engages the recessed
structure of each second blade for driving the two second blades to
selectively expose the aperture of the base; and a spacer disposed
between the first blade and the second blade.
4. The shutter of a camera module as claimed in claim 3, wherein
the N poles and the S poles of the disc body of the magnet array
member of each electromagnetic valve are alternately and annularly
arranged on the disc body.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention is an apparatus which relates to a
magnet, and more particularly to a magnet array member with more
than four N poles and S poles and shutter with the magnet array
member.
[0003] 2. Description of Related Art
[0004] With the development of handheld communication electronic
products, most handheld communication electronic products have
camera lenses which have shutters disposed thereon for controlling
exposure time. A shutter mainly includes a base, electromagnetic
valves disposed on the base and blades combined with the
electromagnetic valves. Based on movement of the blades, an
aperture can be opened and closed thereby controlling the time when
light enters the aperture. Each electromagnetic valve usually
consists of a magnet, a yoke iron and a coil wound around the yoke
iron. The coil is electrified and then acts on an N pole and an S
pole of the magnet to drive the blade to move as desired.
[0005] However, for the demand of operation control for shutters,
besides the function of controlling shutter time, blades need have
the function of aperture control, so it is complicated to control
the operation of blades. Generally, a magnet can be magnetized to
form more than four sectors, that is, the arrangement of an N pole,
an S pole, an N pole, an S pole, and under the effect of
electrified yoke iron and coil, the magnet can have various changes
of clockwise and anticlockwise rotation, so that the blades can be
controlled to have multi-section changes, thereby achieving the
demands of controlling shutters and apertures.
[0006] As shown in FIG. 1, a conventional magnet 11 mainly has an
upper disc portion 111 and a lower disc portion 112, an arm portion
113 horizontally extending from a side edge of the upper disc
portion 111, and a driving portion 114 perpendicularly protruding
from the terminal of the arm portion 113. The driving portion 114
extends into blades so that the blades can be driven to swerve when
the magnet 11 rotates.
[0007] Conventional magnets 11 mostly are made of metals with
strong magnetism (such as iron, cobalt, nickel and so on), and then
magnetized to form poles. However, the magnets with this structure
can only form two poles, as shown in FIG. 2. It is because the
protruding arm portion 113 interferes with a magnetizing equipment
12 during magnetization so that the magnet 11 cannot be magnetized
to form four sectors. Accordingly, conventional magnets are not
able to be applied in shutters for which operation control is
complicated.
[0008] Therefore, the inventors of the present invention believe
that the shortcomings described above are able to be resolved and,
as a result, urge use of the present invention which is of a
reasonable design and is an effective improvement based on deep
research and thought.
SUMMARY OF THE INVENTION
[0009] A main object of the present invention is to provide a
magnet array member which can be easily magnetized to form more
than four poles and be convenient for mass production.
[0010] A secondary object of the present invention is to provide a
shutter which has the above-mentioned magnet array member for
complicated operation control. The shutter is usefully applied in a
camera module of a portable mobile communication device.
[0011] To achieve the above-mentioned main object, a magnet array
member having more than four poles in accordance with the present
invention is provided. The magnet array member with more than four
poles includes a disc portion and a driving portion. The disc
portion has more than four N poles and S poles and an annular side
face, a first end face and a second end face oppositely connected
with the annular side face and a shaft hole extending through the
first end face and the second end face. The driving portion
protrudes from one or the other of the first end face and the
second end face of the disc portion in a vertical direction.
[0012] To achieve the above-mentioned secondary object, a shutter
of a camera module useful in a portable mobile communication device
in accordance with the present invention is provided. The shutter
includes a base, two electromagnetic valves, a first blade, a
spacer and two second blades. The base has an aperture and two
pivot columns. Each electromagnetic valve has a yoke iron disposed
on a side edge of the base, a coil wound around the yoke iron, and
a rotatable magnet array member adjacent to a side of the yoke
iron. Each magnet array member has the above-mentioned disc portion
and driving portion, and the pivot columns of the base pivotably
extend through the shaft holes of the magnet array members. The
first blade is disposed on the base, and the driving portion of one
magnet array member of the two electromagnetic valves extends into
one end of the first blade to drive the first blade to close or
open the aperture of the base. The spacer is disposed on the base,
the second blades are disposed over the spacer, and the driving
portion of the other magnet array member of the two electromagnetic
valves extends into one end of each second blade to drive the two
second blades to close or open the aperture.
[0013] The efficacy of the present invention is as follows: since
the driving portion doesn't protrude from a side edge of the disc
portion but protrudes from one end face of the disc portion, the
driving portion doesn't interfere with any magnetizing equipment
when magnetized. Accordingly, the disc portion can form more than
four N poles and S poles depending on design demands, which is
convenient for mass production, and the magnet array member of the
present invention can be applied in shutters, for which operation
control is more complicated, to achieve the needed functions.
[0014] To further understand features and technical contents of the
present invention, please refer to the following detailed
description and drawings relating to the present invention.
However, the drawings are only to be used as references and
explanations, not to limit the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is a perspective view of a conventional magnet;
[0016] FIG. 2 is a schematic view of the conventional magnet
magnetized by some magnetizing equipment;
[0017] FIG. 3 is a perspective view of a magnet array member of the
present invention;
[0018] FIG. 4 is a schematic view of the magnet array member of the
present invention magnetized by magnetizing equipment, with four
poles;
[0019] FIG. 5 is a schematic view of the magnet array member of the
present invention, with six poles;
[0020] FIG. 6 is a first assembled planar view of a shutter of the
present invention;
[0021] FIG. 7 is a second assembled planar view of the shutter of
the present invention, showing that a first blade is in a closing
state;
[0022] FIG. 8 is a third assembled planar view of the shutter of
the present invention, showing that the first blade is in an
opening state;
[0023] FIG. 9 is a fourth assembled planar view of the shutter of
the present invention, showing that second blades are in a closing
state; and
[0024] FIG. 10 is a fifth assembled planar view of the shutter of
the present invention, showing that the second blades are in an
opening state, wherein a spacer is removed for showing the second
blades clearly.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0025] Please refer to FIG. 3 illustrating a magnet array member 20
with more than four poles according to the present invention, which
includes a disc portion 21 and a driving portion 22.
[0026] The disc portion 21 has an annular side face 211, a first
end face 212 and a second end face 213 oppositely connected with
the annular side face 211, and a shaft hole 214 extending through
the first and the second end faces 212, 213. The driving portion 22
protrudes from one of the first end face 212 and the second end
face 213 of the disc portion 21 in the vertical direction Z.
[0027] Please refer to FIG. 4, when the magnet array member 20
needs to be magnetized, since the driving portion 22 doesn't
protrude from a side edge of the disc portion 21 but protrudes from
one end face of the disc portion 21, the driving portion 22 doesn't
interfere with magnetizing equipment 9. Accordingly, the disc
portion 21 can form more than four, though totaling to
even-numbered N poles and S poles depending on design demands. As
shown in FIG. 4, the disc portion 21 has four N poles and S poles;
or alternatively, as shown in FIG. 5, the disc portion 21' has six
N poles and S poles. The N poles and the S poles of the disc
portion 21 are alternately and generally annularly arranged on the
disc portion 21.
[0028] Please refer to FIG. 6, the magnet array member 20 of the
present invention is provided for a shutter 2 of a camera module of
a portable mobile communication device. The portable mobile
communication device may be a mobile phone or a PDA, or other
photographic or photometric device, etc. The shutter 2 includes a
base 30, two yoke irons 40 disposed on side edges of the base 30,
and coils 50 respectively wound around the yoke irons 40. The base
30 has an aperture 31 formed in the center thereof and two pivot
columns 32 for respectively pivotably extending through the shaft
hole 214 of two magnet array members 20 so that the two magnet
array members 20 are rotatably disposed on the base 30 and each is
adjacent to one side of the corresponding yoke iron 40, so as to
form two electromagnetic valves with the yoke irons 40 and the
coils 5.
[0029] As shown in FIG. 7, a first blade 60 may be disposed on the
base 30, and the driving portion 22 of one magnet array member 20
extends into one end of the first blade 60 to drive the first blade
60 to move, as shown in FIG. 7 and FIG. 8, thereby opening or
closing the aperture 31.
[0030] As shown in FIG. 9, further, a spacer 70 may be disposed on
the base 30 and located over the blade 60, and two second blade 80
are disposed over the spacer 70. The driving portion 22 of the
other magnet array member 20 extends into one end of each second
blade 80 to drive the two second blade 80 to move, as shown in FIG.
9 and FIG. 10, thereby opening or closing the aperture 31.
Additionally, the two pivot columns 32 of the base 30 respective
pivotably extend through one end of the first blade 60 and one end
of each second blade 80 to be the rotation center of the blades.
The first blade 60 may be a shutter blade and the second blades 80
may be aperture blades. Based on the collocation and interaction of
the N poles and the S poles after the poles of the magnet array
members 20 and the coils 50 are electrified, the magnet array
members 20 can rotate in multi-section to control the travel range
of the blades, thereby controlling the aperture size and the
shutter time.
[0031] Accordingly, basing on the structure design of the magnet
array member of the present invention, the present invention can
ensure that the magnet forms more than four poles successfully when
magnetized, which is convenient for mass production, and the magnet
array member of the present invention can be applied in shutters,
for which operation control is more complicated, to achieve the
needed functions.
[0032] What are disclosed above are only the specification and the
drawings of the preferred embodiment of the present invention and
it is therefore not intended that the present invention be limited
to the particular embodiment or embodiments disclosed. It will be
understood by those skilled in the art that various equivalent
changes or variations may be made depending on the specification
and the drawings of the present invention without departing from
the scope of the present invention which is defined solely and
completely only within the following claims.
* * * * *