Coil unit, manufacturing method for coil unit and photographing optical device

Patent metadata

Field	Value
Publication number	US-2017010475-A1
Application number	US-201615205354-A
Country	US
Kind code	A1
Filing date	Jul 8, 2016
Priority date	Jul 8, 2015
Publication date	Jan 12, 2017
Grant date	—

Abstract

A coil unit may include a coil in a substantially rectangular frame shape; and a coil holding member. A thickness direction of the coil may be perpendicular to a long side of the coil and a short side of the coil. An outer peripheral face of the coil holding member may include an abutting face in a flat shape with which the coil is abutted. A protruded part may be formed formed so as to protrude from the abutting face to an outer side of the coil holding member. A protruded part end face parallel to the abutting face may be formed on a tip end side of the protruded part in a protruding direction of the protruded part. A distance between the abutting face and the protruded part end face may be equal to a thickness of the coil.

First claim

What is claimed is:

1 . A coil unit comprising:
a coil formed in a substantially rectangular frame shape; and a coil holding member structured to hold the coil; wherein when a direction perpendicular to a parallel direction to a long side of the coil and a parallel direction to a short side of the coil is a thickness direction of the coil, an outer peripheral face of the coil holding member comprises an abutting face in a flat face shape with which one end face in the thickness direction of the coil is abutted; wherein a protruded part around which the coil is directly wound is formed so as to protrude from the abutting face to an outer side of the coil holding member; wherein a protruded part end face in a flat face shape which is parallel to the abutting face is formed on a tip end side of the protruded part in a protruding direction of the protruded part; and wherein a distance between the abutting face and the protruded part end face is equal to a thickness of the coil.

2 . The coil unit according to claim 1 , further comprising a terminal pin comprising metal with which an end part of the coil is bound and electrically connected,
wherein the outer peripheral face of the coil holding member comprises two side-face pairs each of which is comprised of a pair of side faces parallel to each other, the two side-face pairs being disposed so as to be perpendicular to each other, wherein the abutting face and the protruded part are formed on the side face, and wherein when a direction perpendicular to a perpendicular direction to the side faces structuring one of the two side-face pairs and perpendicular to a perpendicular direction to the side faces structuring the other of the two side-face pairs is referred to as a first direction, the terminal pin is formed in a polygonal column shape, and the terminal pin is fixed to one end face in the first direction of the coil holding member so as to protrude in the first direction from the one end face of the coil holding member.

3 . The coil unit according to claim 2 , wherein
in a case that a side face portion of the protruded part with which a winding-start side portion of the coil is first come into contact when the coil is to be directly wound around the protruded part is referred to as a winding-start contact part, a coil introducing part which is recessed from the abutting face is formed on the side face of the coil holding member between the winding-start contact part and the terminal pin to which an end part on a winding-start side of the coil is fixed.

4 . The coil unit according to claim 3 , wherein a recessed amount of the coil introducing part from the abutting face is equal to an outer diameter of a conducting wire structuring the coil or more.

5 . The coil unit according to claim 4 , wherein the recessed amount of the coil introducing part from the abutting face is equal to the outer diameter of the conducting wire.

6 . The coil unit according to claim 3 , wherein a width of the coil introducing part in a second direction which is perpendicular to the thickness direction of the coil and the first direction becomes wider as going to the one end face in the first direction of the coil holding member to which the terminal pin is fixed.

7 . The coil unit according to claim 6 , wherein a recessed amount of the coil introducing part from the abutting face is equal to an outer diameter of a conducting wire structuring the coil or more.

8 . The coil unit according to claim 2 , further comprising a circuit board having a solder land to which the terminal pin is soldered.

9 . The coil unit according to claim 1 , wherein
the outer peripheral face of the coil holding member comprises two side-face pairs each of which is comprised of a pair of side faces parallel to each other, the two side-face pairs being disposed so as to be perpendicular to each other, the abutting face and the protruded part are formed on the side face, and when a direction perpendicular to a perpendicular direction to the side faces structuring one of the two side-face pairs and perpendicular to a perpendicular direction to the side faces structuring the other of the two side-face pairs is referred to as a first direction, each of both ends of the abutting face in the first direction is connected with each of both end faces of the coil holding member in the first direction through a curved face part formed in a convex curved surface shape.

10 . The coil unit according to claim 9 , further comprising a terminal pin made of metal with which an end part of the coil is bound and electrically connected,
wherein the terminal pin is formed in a polygonal column shape, and wherein the terminal pin is fixed to one end face in the first direction of the coil holding member so as to protrude from the one end face of the coil holding member in the first direction.

11 . The coil unit according to claim 10 , wherein
in a case that a side face portion of the protruded part with which a winding-start side portion of the coil is first come into contact when the coil is to be directly wound around the protruded part is referred to as a winding-start contact part, a coil introducing part which is recessed from the abutting face is formed on the side face of the coil holding member between the winding-start contact part and the terminal pin to which an end part on a winding-start side of the coil is fixed.

12 . The coil unit according to claim 1 , further comprising a second protruded part which is formed on the protruded part so as to protrude from the protruded part end face to an outer side of the coil holding member.

13 . The coil unit according to claim 12 , wherein
the outer peripheral face of the coil holding member comprises two side-face pairs each of which is comprised of a pair of side faces parallel to each other, the two side-face pairs being disposed so as to be perpendicular to each other, the abutting face, the protruded part and the second protruded part are formed on the side face, and when a direction perpendicular to a perpendicular direction to the side faces structuring one of the two side-face pairs and perpendicular to a perpendicular direction to the side faces structuring the other of the two side-face pairs is referred to as a first direction, each of both ends of the abutting face in the first direction is connected with each of both end faces of the coil holding member in the first direction through a curved face part formed in a convex curved surface shape.

14 . A manufacturing method for a coil unit with a use of a winding device having a winding main body part which is rotatable and to which a coil holding member holding a coil is fixed, a supply nozzle structured to supply a conducting wire for structuring the coil, and a subordinate head structured to rotate together with the winding main body part, the manufacturing method comprising:
previously providing the coil holding member, in which, when a direction perpendicular to a parallel direction to a long side of the coil formed in the substantially rectangular frame shape and a parallel direction to a short side of the coil is a thickness direction of the coil,
an outer peripheral face of the coil holding member comprises an abutting face in a flat face shape with which one end face in the thickness direction of the coil is abutted,
a protruded part around which the coil is to be directly wound is formed so as to protrude from the abutting face to an outer side of the coil holding member,
a protruded part end face in a flat face shape which is parallel to the abutting face is formed on a tip end side of t

Assignees

• Nidec Sankyo Corp

Inventors

• Minamisawa Shinji
• Yanagisawa Kazuhiko

Classifications

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N23/687

  by shifting the lens or sensor position · CPC title

• G03B5/02

  Lateral adjustment of lens · CPC title

• G03B2205/0069

  using electromagnetic actuators, e.g. voice coils · CPC title