`
`
`
`
`
`(51) Int. Cl.5
`H 02 K 15/12
` 3/52
` 21/22
`
`
`(19) Japan Patent Office (JP)
`
`(12) Japanese Unexamined Patent
`Application Publication (A)
`Identification codes
`JPO file number
`E
`8325–5H
`Z
`7346–5H
`V
`6435–5H
`
`
`
`(11) Japanese Unexamined Patent
`Application Publication Number
`H4–105538
`
`(43) Publication date: 07 Apr 1992
`
`
`Request for examination: None Number of claims: 5 (Total of 8 pages)
`
`SALIENT-POLE IRON CORE COIL
`(21) JP H2–223578
`(22) 24 Aug 1990
`Shigeki Koizumi
`
`Canon Electronics Inc.
`Yasutaka Ohne, Patent attorney
`
`
`
`c/o Canon Electronics Inc.
`1248 Kagemori, Chichibu-shi, Saitama-ken
`1248 Kagemori, Chichibu-shi, Saitama-ken
`
`
`(54) Title of the invention
`
`
`(72) Inventor
`
`(71) Applicant
`(74) Agent
`
`
`
`1
`Specification
`1. Title of the Invention
` Salient-Pole Iron Core Coil
`2. Claims
`(1) A salient-pole iron core coil, made by
`winding a coil around the arm sections of a
`salient-pole core, wherein the coil wound around
`the salient-pole iron core is compressed such that
`the ratio of initial coil thickness to post-
`compression coil thickness is 95% or less, and
`mold sealing or affixing with an adhesive agent
`or the like is done so as to prevent the
`compressed coil from coming apart or to cover
`and protect it.
`(2) A salient-pole iron core coil, as claimed in
`claim 1, wherein the coil is compressed using the
`mold-tightening force of the molding machine
`for performing the molding sealing.
`(3) A salient-pole iron core coil as claimed in
`claim 1 or claim 2, wherein the aforementioned
`mold sealing is characterized as being performed
`integrally with a circuit board after mounting the
`aforementioned salient-pole iron core coil.
`
`2
`(4) A salient-pole iron core coil as claimed in
`any of claims 1 to 3, wherein the mold sealing is
`done with the molding integrating a shaft bearing
`housing or an attachment seat of the salient-pole
`iron core coil.
`(5) A salient-pole iron core coil as claimed in
`any of claims 1 to 4, wherein the mold sealing is
`done using a molding material having a
`coefficient of thermal expansion somewhere
`between the iron which is the core material and
`the copper which is the coil material.
`3. Brief Description of the Invention
`[Industrial Field of Use]
` The present invention relates to salient-pole
`iron core coils used in motors, etc., that obtain
`rotary force using the attraction and repulsion
`forces of magnets.
`[Prior Art]
` Various types of small motors are used as
`drive sources for operational mechanisms in
`electronic devices such as office automation
`equipment. These small motors can be broadly
`divided into circumferentially-opposed motors
`and planarly-opposed motors.
` For example, in circumferentially-opposed
`motors, drive magnets that are provided to an
`external rotation rotor affixed to a motor shaft
`(rotor magnets) and yoke protrusions of a core
`coil affixed to a housing that rotationally
`
`— 201 —
`
`BMW-1018
`Page 1 of 17
`
`

`

`3
`supports the motor shaft are opposed across a
`predetermined radial-direction distance, and the
`external rotation rotor is caused to turn by the
`attraction and repulsion forces of the magnetic
`field created when a current is passed through
`the coil, and the magnetic poles of the rotor
`magnets.
` On the other hand, in planarly-opposed
`motors, a disk-shaped drive magnet provided to a
`rotational rotor that is affixed to a motor shaft
`and a plurality of hollow coils arranged in a
`plane are planarly opposed, and the rotor is
`caused to turn by the electromagnetic effect of
`the drive magnet arising when a current is passed
`through the coil.
` The present invention relates to a salient-pole
`iron core coil used in circumferentially-opposed
`motors, specifically in ones in which a coil is
`wound around a plurality of arm sections formed
`radially on a core yoke.
`[Technical Problem to be Solved by the
`Invention]
` Even motors provided with salient-pole iron
`core coils have been required to be thinner and
`thinner in recent years.
` However, in conventional salient-pole iron
`core coils, the thickness of the coil is large after
`being wound around the core, and moreover
`there is variation in the thickness of irregularly
`wound sections that occur during winding,
`making it necessary to set an unnecessarily large
`gap between the coil and the rotor yoke on either
`side and the circuit board (or supporting
`member), preventing the achievement of a thin
`design.
` The present invention was devised in light of
`these technical problems, and has as an object, to
`provide a salient-pole iron core coil with which
`the coil thickness can be made uniformly a
`minimum thickness with ease, management steps
`of dealing with irregular winding sections can be
`omitted, the coil can be prevented from coming
`apart and can be covered and protected, and a
`thin design can be achieved for the motor with a
`very reliable structure.
`[Means for Solving the Problems]
` The present invention provides a salient-pole
`iron core coil made by winding a coil around arm
`
`JP H4–105538 (2)
`
`4
`sections of a salient-pole core, wherein the coil
`wound around the salient-pole iron core is
`compressed such that the ratio of initial coil
`thickness to post-compression coil thickness is
`95% or less, and mold sealing or affixing with an
`adhesive agent or the like is done so as to
`prevent the compressed coil from coming apart
`or to cover and protect it, with which the coil
`thickness can be made uniformly a minimum
`thickness with ease, management steps of
`dealing with irregular winding sections can be
`omitted, the coil can be prevented from coming
`apart and can be covered and protected, and a
`thin design can be achieved for the motor with a
`very reliable structure.
` With this configuration, an independent step of
`compressing can be omitted, and costs can be cut
`by compressing the coil using the mold
`tightening force of the molding machine for
`making the mold seal.
` Furthermore, with the above configuration, if
`the mold seal is made integrally with the circuit
`board after the salient-pole iron core coil is
`mounted, the coil soldering terminals can be
`omitted from the circuit board, and the coil and
`the circuit board can be connected solidly
`without requiring a termination process.
` Furthermore, with the above configuration, the
`number of parts and assembly steps can be
`reduced, leading to significant cost reduction by
`making the mold seal integral with the shaft
`bearing housing and the attachment seat of the
`salient-pole iron core coil.
` Furthermore, with this configuration, heat
`distortion can be minimized by using a mold
`material having a coefficient of thermal
`expansion that is between the iron which is the
`core material and the copper which is the coil
`material for the mold seal, which further
`improves durability.
`[Embodiments]
` The present invention is described below in
`detail, with reference to the drawings.
` FIG. 1 is a vertical cross-sectional view
`showing an example of a structure of a brushless
`circumferentially-opposed motor having a
`salient-pole iron core coil according to one
`
`
`— 202 —
`
`
`BMW-1018
`Page 2 of 17
`
`

`

`5
`embodiment of the present invention. FIG. 2 is a
`cross-sectional view along line II-II in FIG. 1.
` In FIGs. 1 and 2, a shaft bearing housing 2 is
`affixed to a supporting member 1 to which a
`circuit board 16 that constitutes control circuitry,
`etc., of the motor is connected, and ball bearings
`4 and a sliding shaft bearing 5 that rotationally
`support a motor shaft 3 are mounted in an inner
`diameter section of the shaft bearing housing 2.
` A salient-pole iron core (armature yoke) 6 is
`affixed to an outer surrounding surface of the
`shaft bearing housing 2.
` As shown in FIG. 2, a boss section 7, a
`plurality (12 in the illustrated example) of arm
`sections 8 that protrude radially out from the
`boss section, and head sections 9 on the ends of
`the arm sections are formed on the salient-pole
`iron core 6.
` A coil 10 is wound around the arm sections 8
`of the salient-pole iron core 6.
` A salient-pole iron core coil 11 is constituted
`by the salient-pole iron core 6 and the coil 10.
` Note that in the illustrated examples, the
`salient-pole iron core coil 11 is fitted onto the
`outside of the shaft bearing housing 2 by the
`boss section 7 of the yoke 6 thereof and is
`affixed by tightening the housing 2 and the boss
`section 7 together to the supporting member 1
`using a plurality of screws 12.
` A rotor yoke 13 is affixed to the opposite side
`of the supporting member 1 of the motor shaft 3.
` The rotor yoke 13 has a drum shape (or bowl
`shape) so as to cover the outer surface of the
`salient-pole iron core coil 11, and is affixed by
`the center hole thereof to the motor shaft 3 by
`press-fitting or welding, etc.
` Rotor magnets (drive magnets) 14 which are
`made up of permanent magnets are affixed to an
`inner surface of an outer flange section of the
`rotor yoke 13 by adhesion or similar means.
` The rotor magnets 14 face the head sections
`(electrode sections) 9 of the salient-pole iron
`core 6 of the salient-pole iron core coil 11 across
`a predetermined distance.
` Furthermore, the rotor magnets 14 have a
`plurality of north and south poles (eight in the
`illustrated example), as shown in FIG. 2.
`
`
`JP H4–105538 (3)
`
`6
` An FG magnet 15 for detecting motor speed is
`affixed to the outer surface of the rotor yoke 13.
` A motor drive circuit, an FG pattern, a coil
`wiring pattern, and so on are formed on the
`circuit board 16 on the supporting member 1.
` The salient-pole iron core 6 is formed, for
`example, by laminating silicon steel plates that
`are about 0.5 mm thick.
` Thus, with this configuration, when a current
`is passed through the coil 10, a magnetic field is
`generated on the yoke electrodes 8 and 9, and the
`rotor is turned by the attraction and repulsion
`force (magnetic force) created between the
`magnetic field and the rotor magnets 14.
` In this case, a publicly-known Hall device, not
`shown in the drawings, detects the rotation of the
`rotor, current drive is performed to cause the
`rotor to turn as a brushless motor, and torque is
`output by the motor shaft 3.
` In the case of a brush motor, a brush is used
`instead of the Hall device, resulting in the same
`turning of the motor.
` FIGs. 3 to 5 are schematic partial cross-
`sectional views showing one embodiment of the
`salient-pole iron core coil 11 according to the
`present invention.
` FIG. 3(A) shows the coil 10 wound around an
`arm section of the salient-pole iron core 6 in a
`regular fashion, and set between a mobile mold
`21 and a fixed mold 22 attached to a press
`machine. FIG. 3(B) shows the salient-pole iron
`core coil 11 being pressed by the mobile mold 21
`and the fixed mold 22, a mold material 23 being
`injected between the molds 21 and 22, the coil
`10 being compressed in the thickness direction
`thereof, and a mold seal being made.
` The mobile mold 21 and the fixed mold 22 are
`molds that double as pressing units, pressing on
`the coil 10 from both sides.
` Compressing is performed until t / T < 0.95,
`where T is the initial thickness of the coil 10 in
`FIG. 3(A) and t is the post-compression
`thickness in FIG. 3(B), i.e., until the thickness is
`95% or less.
` On the other hand, more compressing is
`possible if the limit of compressing the coil 10 is
`within the range tolerated by the coil resistance,
`generally limited to around t / T > 0.7.
`
`— 203 —
`
`
`BMW-1018
`Page 3 of 17
`
`

`

`7
`Any plastic insulation material having
`outstanding molding properties can be used as
`the mold material 23, e.g., polyimide (nylon)
`plastic or engineering plastics such as
`polycarbonate, PBT, AS, or ABS.
`
`How much molding material is injected
`is determined by how much is needed to create a
`mold seal for the coil 10 and form a thin
`protective layer on the surface thereof, although
`this can be made thicker on desired surfaces.
`
` If the mold material 23 is chosen so as to have
`a coefficient of thermal expansion which is
`between the iron which is the material of the core
`6 and the copper which is the material of the coil
`10, thermal distortion caused during driving of
`the motor or by differences in ambient
`temperature can be minimized, further improving
`the durability of the motor.
` In the example shown in the drawings, the
`mold seal of the coil 10 is made using molds 21
`and 22, which double as pressing sections, and
`therefore the compressing (pressing) of the coil
`10 can be done using the mold tightening force
`of the molds 21 and 22. Accordingly, the
`compressing of the coil 10 can be done
`concurrently with the mold seal.
` Note that the example shown in the drawings
`shows the compressing of the coil 10 and the
`mold seal being done simultaneously, but they
`may also be done in separate steps.
` Specifically, it is possible to crush (press) the
`coil 10 using pressing sections attached to a
`press machine or the like, and then make just the
`mold seal using the molds, etc.
` For this compressing, if the hollow coil is
`made only of copper, the outer shape needs to be
`pressed using molds, etc., but in the case of the
`coil 10 of the salient-pole iron core coil 11, the
`protruding electrode sections of the core 6 (the
`arm sections 8 and the head sections 9) act as a
`guide, meaning the molds as described above are
`not necessarily needed.
` Specifically, with a hollow coil, there is a limit
`to the external shape of the coil, besides the
`thickness, because it is arranged in a plane, and
`therefore the thickness is limited by the 100%
`wire occupancy ratio (70–75% of the conductive
`
`JP H4–105538 (4)
`
`8
`wire occupancy ratio), but in the case of the
`salient-pole iron core coil, it is not a problem if it
`becomes slightly deformed in the lengthwise
`direction, as long as it does not stick out from the
`yoke (salient-pole core). Accordingly, the coil
`can be compressed to the extent tolerated by the
`coil resistance, and horizontal spreading is not
`particularly a problem.
` Hence, if only the salient-pole iron core coil is
`to be pressed, the compressing ratio can be fine-
`tuned to increase the wire occupancy ratio by
`filling the empty sections in the winding with
`coil, which provides the benefit of allowing even
`greater thinness of the coil.
` Moreover, if only performing the pressing
`step, and the coil is hollow, the outer shape of
`the coil has to be pressed, meaning that a
`pressing mold has to be provided for each type
`of coil, and the number of pressing steps using
`the press machine, etc., increases. However, in
`the case of the salient-pole iron core coil, there is
`no need for a pressing mold, making it possible
`to use one single pressing, which leads to almost
`no increase in cost.
` FIG. 4(A) and (B) show states corresponding
`to FIG. 3(A) and (B), but in FIG. 4 there is an
`irregularity in the winding of the coil 10 during
`the winding step. However, as shown in FIG.
`4(B), even when this is compressed, the same
`thickness t can be achieved as in other parts.
` FIG. 4 differs from FIG. 3 in this point, but is
`otherwise substantively the same.
` FIG. 5(A) and (B) also correspond to FIG.
`3(A) and (B) in showing the coil 10 wound
`around the salient-pole iron core coil 11 and
`placed between the mobile mold 21, and the
`fixed mold 22 attached to the press machine
`before pressing, and then showing both sides of
`the coil 10 compressed by pressing down with
`the top and bottom molds 21 and 22 which also
`serve as pressing sections, resulting in a mold
`seal using the mold material 23. However, FIG.
`5 also shows an irregularity B in the cross point
`of the coil 10 during the winding step, which can
`nevertheless be pressed down to the same
`thickness t as other parts, as shown in FIG. 5(B).
` The winding direction of the coil changes
`where the salient-pole iron core 6 comes in
`
`— 204 —
`
`
`BMW-1018
`Page 4 of 17
`
`

`

`JP H4–105538 (5)
`
`10
`manufacturing of the motor easier, which can cut
`costs.
` Note that copper has good malleability, so when
`it is made thinner, it can be made quite thin.
`However, the conductive resistance increases. This
`balance has to be considered.
` Using the salient-pole iron core coil of the
`present invention in a brushless circumferentially-
`opposed motor, such as in FIGs. 1 and 2, is most
`effective, since there is no brush and there is no
`need for a gap between the rotor 14 and the coil 10.
`
`In the aforementioned embodiment, both sides of
`the coil 10 are compressed directly, but if a thin
`protective film is set on the pressed surfaces (both)
`of the coil 10 after winding and then the coil 10 is
`pressed with this film on it, the film can be affixed
`to the surface of the coil 10, forming a protective
`layer thereon and making it possible to
`simultaneously form an insulating protective film
`on the surfaces of the coil 10.
` Polyimide or polyester films, etc., can be used as
`the film, for example.
` After pressing the coil 10, it is possible to apply a
`liquid or fluid plastic, etc., to the pressed surfaces
`of the coil 10, which then forms a coil protection
`layer after hardening, after which the mold seal can
`be made, which provides the same effect as the
`film.
` Furthermore, in the aforementioned embodiment,
`a case was described in which the coil 10 was
`mold-sealed using the mold material 23, but in the
`present invention it is also possible to apply or
`inject an adhesive agent, etc., into the compressed
`coil 10 instead of making the mold seal, thereby
`preventing the coil from coming apart and
`protecting it.
` The adhesive or filling agent in this case can be
`any epoxy or rubber which can be affixed to the
`coil, meaning various fixing agents can be used.
`
`
` Application or filling of the adhesive agent can
`be done using any appropriate method, including
`brush application and dipping.
` FIG. 6 is a vertical cross-sectional view showing
`the structure of a brushless circumferentially-
`opposed motor provided with a salient-pole iron
`core coil according to another embodiment of the
`present invention.
`
`
`
`9
`contact with the head sections 9, and
`irregularities similar to the irregular winding A
`occur in these cross-point sections, too, as shown
`in the drawing.
` With conventional coils, there has been
`variation in the coil thickness due to
`irregularities in the winding in the cross-point
`sections, but simply by adding the compressing step
`of the present invention it is possible to form the
`thickness of the coil 10 to a uniform and minimum
`thickness which is the same as in other regular
`winding sections, as shown in FIG. 5(B).
` Other parts of FIG. 5 are substantially the same
`as in FIGs. 3 and 4.
` Thus, with the embodiment as described above,
`the coil 10 is wound around the salient-pole iron
`core (yoke) 6, the coil is compressed flat from both
`sides, and the ratio of the coil thickness after
`compressing to the initial coil thickness is made
`95% or less. Moreover, the compressed coil 10 is
`mold-sealed by the mold material 23, so even if the
`copper wire is compressed at cross point B,
`creating the irregularity A, the coil is deformed so
`as to fill the gaps, making it possible to achieve an
`overall uniform and minimum thickness.
` Furthermore, the coil is mold-sealed either
`during the compressing of the coil 10 or afterwards,
`making it possible to completely prevent the coil 10
`from coming apart after pressing, and also making
`it possible to obtain a salient-pole iron core coil in
`which the coil covering is thoroughly protected.
` Thus, the thickness of the coil can easily be made
`uniform and minimized, and steps required to
`handle irregularities in the winding can be omitted.
`The coil can be prevented from coming apart, and
`the coating can be protected as well, making it
`possible to obtain a salient-pole iron core coil with
`greater thinness using a very reliable construction.
` Moreover, compressing of the coil 10 is done
`using the mold tightening force of the molding
`machine which performs the molding seal, so no
`separate compressing step is needed, which can
`reduce costs.
` As noted above, making the salient-pole iron
`core coil 11 thinner makes it possible to make the
`motor thinner as well, while at the same time
`absorbing variations in the coil thickness caused
`during manufacture. Therefore, the effect is
`provided of making process management during
`
`
`— 205 —
`
`
`BMW-1018
`Page 5 of 17
`
`

`

`11
` The present embodiment differs from the
`embodiment described with reference to FIGs. 1 to
`5 as follows.
`
`i) The mold seal of the coil 10 by the mold
`material 23 is done concurrently with the circuit
`board 16 after mounting the salient-pole iron core
`coil 11 on the circuit board 16.
` The mold seal in this case can be done
`concurrently with the compressing of the coil 10,
`or it can be done after the compressing.
`
`ii) When mold-sealing the coil 10 of the
`salient-pole iron core coil 11 with the mold
`material 23, a part 17 corresponding to the shaft
`bearing housing 2 in FIG. 1 can also be formed
`at the same time using the molding material.
` The mold seal in this case, too, can be made
`concurrently with the compressing of the coil 10,
`or after the compressing.
`
`iii) When mold-sealing the coil 10 of the
`salient-pole iron core coil 11 with the mold
`material 23, a coil attachment seat 18 which fills
`the gap between the coil 10 and the circuit board
`16 can be molded using the molding material
`integrally.
` The mold seal in this case can be made
`concurrently with the compressing of the coil 10,
`or also after the compressing.
` The mold seal in i) – iii) above can be made
`separately, simultaneously as shown in the
`drawings, or individually, selecting one or two as
`appropriate.
` If, as in i), the mold seal of the coil 10 is made
`together with the circuit board, after soldering or
`otherwise mounting the salient-pole iron core
`coil 11 to the circuit board 16, both can be
`secured after being mounted. Accordingly, the
`coil soldering terminals on the circuit board 16
`can be omitted, and the coil 10 and the circuit
`board 16 can be connected together solidly
`without any termination process needed.
` If, as in ii) and iii), the coil 10 is mold-sealed
`by the mold material 23 and the part 17
`corresponding to the shaft bearing housing 2 or
`the coil attachment seat 18, which fills the gap
`between the coil 10 and the circuit board 16, is
`molded integrally with the mold material 23 at
`the same time, the component parts which are
`adjacent can also be molded together at the same
`
`JP H4–105538 (6)
`
`12
`time, which can reduce the number of parts and
`assembly steps, thereby making it possible to
`make significant cost reductions.
` Note that in the embodiment shown in FIG. 6,
`if a molding material which is a plastic material
`or the like having a coefficient of thermal
`expansion somewhere between the iron which is
`the material of the core 6 and the copper which is
`the material of the coil 10 is selected, as in the
`case above, heat distortion due to heating when
`the motor is run or due to differences in ambient
`temperature, etc., can be minimized, which can
`further improve the durability of the motor.
` Note that in these embodiments, cases have
`been described in which the present invention is
`applied to a salient-pole iron core coil in a
`circumferentially-opposed brushless motor, but
`the present invention can also be applied to
`salient-pole iron core coils in other types of
`motors and provide the same effect.
`[Effects of the Invention]
` As is clear from the above description, the
`present invention provides a salient-pole iron
`core coil made by winding a coil around arm
`sections of a salient-pole core, wherein the coil
`wound around the salient-pole iron core is
`compressed such that the ratio of initial coil
`thickness to post-compressing coil thickness is
`95% or less, and mold sealing or affixing with an
`adhesive agent or the like is done so as to
`prevent the compressed coil from coming apart
`or cover and protect it, which makes it easily
`possible to achieve a uniform and minimum coil
`thickness, omit steps needed to deal with
`winding irregularities, prevent the coil from
`coming apart and protect it, and achieve greater
`thinness of the motor with a very reliable design.
` With the invention as in claim 2, in addition to
`the aforementioned configuration, the coil is
`compressed using the mold-tightening force of
`the molding machine for performing the molding
`sealing, and therefore in addition to the
`aforementioned effects, the effect is provided of
`making it possible to omit a separate step for
`compressing, which can cut costs.
` With the invention as in claim 3, in addition to
`the aforementioned configuration, mold sealing
`is performed integrally with a circuit board after
`
`— 206 —
`
`
`BMW-1018
`Page 6 of 17
`
`

`

`13
`mounting the salient-pole iron core coil, and
`therefore, in addition to the aforementioned
`effects, the effect is provided of omitting coil
`soldering terminals from the circuit board, and
`the coil and circuit board can be connected
`solidly without needed a termination process.
` With the invention as in claim 4, in addition to
`the aforementioned configuration, the mold
`sealing is done through integral molding with a
`shaft bearing housing or an attachment seat of
`the salient-pole iron core coil, and therefore, in
`addition to the aforementioned effects, the effect
`is provided of making it possible to reduce the
`number of parts and assembly steps, which can
`significantly cut costs.
` With the invention as in claim 5, in addition to
`the aforementioned configuration, the mold
`sealing is done using a molding material having
`a coefficient of thermal expansion somewhere
`between the iron which is the core material and
`the copper which is the coil material, and
`therefore, in addition to the aforementioned
`effects, heat distortion can be minimized, which
`can improve durability even more.
`4. Brief Description of the Drawings
` FIG. 1 is a vertical cross-sectional view
`showing an example of a structure of a brushless
`circumferentially-opposed motor having a
`salient-pole iron core coil according to one
`embodiment of the present invention. FIG. 2 is a
`
`
`FIG. 1
`
`
`
`
`
`
`
`JP H4–105538 (7)
`
`14
`cross-sectional view along line II-II in FIG. 1.
`FIG. 3(A) and (B) is a schematic partial cross-
`sectional view showing a pressing and mold
`sealing step of a regularly-wound coil. FIG. 4(A)
`and (B) is a schematic partial cross-sectional
`view showing a pressing and mold sealing step
`of a coil having a winding irregularity. FIG. 5(A)
`and (B) is a schematic partial cross-sectional
`view showing a pressing and mold sealing step
`of a coil having a cross point section. FIG. 6 is a
`vertical cross-sectional view showing a
`circumferentially-opposed brushless motor
`provided with a salient-pole iron core coil
`according to another embodiment of the present
`invention.
` The reference numerals representing the main
`constituent parts in the drawings are listed
`below.
` 1 … supporting member, 2 … shaft bearing
`housing, 3 … motor shaft, 6 … salient-pole iron
`core (yoke), 8 … arm sections, 9 … head
`sections, 10 … coil, 11 … salient-pole iron core
`coil, 13 … rotor yoke, 14 … rotor magnets, 16
`… circuit board, 17 … integrally molded part
`(shaft bearing housing), 18 … integrally molded
`part (coil attachment seat), 21 … mobile mold,
`22 … fixed mold, 23 … mold material, A …
`winding irregularity, B … cross point.
`
`Applicant: Canon Electronics Inc.
`Agent: Yasutaka Ohne [stamp]
`
`
`
`
`
`FIG. 2
`
`
`
`
`
`— 207 —
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`BMW-1018
`Page 7 of 17
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`

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`JP H4–105538 (8)
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`
`
`FIG. 3
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`
`
`
`
`FIG. 4
`
`
`
`FIG. 5
`
`
`
`
`
`
`
`
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`
`
`FIG. 6
`
`— 208 —
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`BMW-1018
`Page 8 of 17
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`

`

`TRANSPERFECT
`
`City of New York, State of New York, County of New York
`
`1, Aurora Landman, hereby certify that the document “JPHO4-10553 8” is, to the best of
`
`my knowledge and belief, a true and accurate translation from Japanese into English.
`
`Aurora Landman
`
`Sworn to before me this
`
`June 6, 2017
`
`
` Signature, otary Public——
`
`
`. . q . - ..
`
`Stamp, Notary Public—
`
`BMW-1018
`Page 9 of 17
`
`

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`BMW-1018
`Page 10 of 17
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`

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`BMW-1018
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`BMW-1018
`Page 11 of 17
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`

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