`(19) Japan Patent Office (JP)
`
`(12) Publication of Patent Application (A)
`
`(11) Published Patent Application
`Number
`Japanese Patent Application
`Laid-open No. 2000-184635
`(P2000-184635A)
`(43) Publication date:
`June 30th, 2000
`
`(51) Int.Cl.7
` H02K 1/18
` 21/14
`
`
`Identification Code
`
`
`
`
`
`F1
`H02K 1/18
` 21/14
`
`
`code
`
`Theme
`(reference)
`C 5H002
`M 5H621
`
`
`
`
`
`Examination requested: none Number of claims: 3 (7 pages in total）
`
`(21) Application No.: H10-360379
`
`(22) Application Date:
`December 18th, 1998 (1998. 12. 18)
`
`(71) Applicant: 000004765
`Calsonic Kansei Corporation
`24-15, Minami-dai 5-chome, Nakano-ku,
`Tokyo / JP
`(72) Inventor: Shiro Nakamura in Calsonic Kansei Corporation
`24-15, Minami-dai 5-chome, Nakano-ku,
`Tokyo / JP
`(74) Agent: 100097180
` Patent attorney Hitoshi Maeda (and 1 other)
`F term (reference) : 5H002 AA07 AB01 AE08
` 5H621 GA01 GA04 GB10 HH01 JK01
`
`(54)Title of the Invention: MOTOR
`
`
` (57) [Abstract]
`[Object] A “motor” with excellent reliability and
`durability
`can be provided
`through an
`assembling/manufacturing operation involving a
`small number of steps.
`[Solving means] A motor includes: a stator
`including a stator core and a wound coil 7; and a
`rotor disposed on an inner side of the stator. The
`stator core includes: a plurality of divided core
`blocks 10 each including a yoke portion and a
`salient pole protruding from the yoke portion that
`are integrally formed; and a divided core holding
`member 12 in a form with a plurality of holding
`portions 13, holding the divided core blocks 10 in
`an arranged form, sequentially coupled to each
`other via deformable portions 12a
`that are
`deformable. The divided core holding member 12
`includes insulating covering portions 13a to 13f
`
`that cover the salient pole of each of the divided
`core blocks 10 and a portion therearound, and a
`wound coil 7 is insulated from the divided core
`block 10 by a part 13b and 13d to 13f of the
`covering portions.
`[FIG. 5]
`
`
`
`
`
`
`
`
`
`
`Petitioners Exhibit 1004
`Page 1
`
`

`

`
`
`
`[Claims]
`[Claim 1] A motor (1) comprising:
`a stator (3) including a stator core (6) and a wound
`coil (7); and a rotor (2) disposed on an inner side
`of the stator, wherein the stator core includes: a
`plurality of divided core blocks (10) each including
`a yoke portion (11a) and a salient pole (11b)
`protruding from the yoke portion that are integrally
`formed; and a divided core holding member (12) in
`a form with a plurality of holding portions (13),
`holding the divided core blocks in an arranged
`form, sequentially coupled to each other via
`deformable portions (12a) that are deformable.
`[Claim 2] The motor according to claim 1, wherein
`the divided core holding member (12) includes an
`insulting covering portion (13b, 13d, 13e, 13f) that
`covers a portion of each of the divided core blocks
`(10) where the wound coil (7) is attached.
`[Claim 3] The motor according to claim 2, wherein
`the divided core block (10) is held by the divided
`core holding member with a part (11b) of the
`divided core block press fitted in the covering
`portion (13e) of the divided core holding member
`(12).
`[Detailed Description of the Invention]
`[0001]
`[Technical field to which the present invention
`pertains] The present invention relates to a motor,
`and particularly relates to a structure of a stator of
`an inner rotor type motor.
`[0002]
`[Conventional technique] Generally used inner
`rotor type motors have a rotor, including a
`permanent magnet, disposed on the inner side of
`a stator formed with a wound coil attached to a
`stator core. The stator disposed on the outer side
`of the rotor has a plurality of salient poles,
`protruding inward in a radial direction, integrally
`provided on a yoke portion having an annular
`shape (cylindrical shape). The coil may be directly
`wound around the salient pole, or the wound coil
`that has already been wound may be attached to
`the salient pole. The rotor is formed with a rotor
`core, to which a plurality of the permanent
`magnets are
`fixed,
`integrally attached
`to a
`rotational shaft as an output shaft, and is inserted
`and disposed on the inner side of the stator. The
`rotor is rotated by electromagnetic force generated
`with the wound coil provided to each salient pole
`energized as appropriate.
`
`Japanese Patent Application Laid-open No. 2000-184635
`
`(2)
`
`is
`In some cases, such a motor
`[0003]
`manufactured with a stator core 51 in a form
`illustrated in Fig. 8 for reducing the number of
`manufacturing steps and cost. Specifically, a
`plurality of core plates 52, each including an
`annular yoke portion 52a and a plurality of salient
`poles 52b protruding inward in the radial direction
`from the yoke portion 52a, are formed by punching
`a magnetic metal plate with a press machine, and
`are stacked and integrated.
`[0004] The salient poles (stacked salient poles
`52b) of the stator core 51 protrude inward from the
`annular yoke portion (the stacked yoke portions
`52a) on the outer side. Thus, the winding of the
`coil or the attaching of the wound coil needs to take
`place on the inner side of the stator core 51 (a
`portion where the rotor is to be inserted and
`disposed). However, such a space on the inner
`side of the stator core 51 is small, and thus the
`operation of winding the coil or attaching the
`wound coil is not easy and requires a large number
`of work steps. Furthermore, the number of coils is
`limited in some cases.
`following
`the
`[0005]
`In view of
`the above,
` Specifically,
`technique has been proposed.
`divided core blocks 54 as illustrated in Fig. 9 are
`formed with a plurality of divided pieces (divided
`core plates) 53, formed by dividing (splitting) the
`core plate 52 illustrated in Fig. 8 at portions of the
`yoke portion 52a each being at approximately the
`middle of a section between each two adjacent
`salient poles 52b, stacked and integrated. After
`the coil is wound around or the wound coil is
`attached to the stacked salient poles 53b of the
`divided core block 54, the divided core blocks 54
`are arranged to be in an annular form with adjacent
`yoke portions 53a in contact with each other, and
`then welding is performed between the stacked
`yoke portion 53a of each adjacent divided core
`blocks 54 so that an integrated structure can be
`established.
`[0006] The portion of the divided core block to be
`provided with the wound coil is coated with
`insulating resin to guarantee insulation from the
`wound coil, and the wound coil is attached to the
`coated portion.
`[0007]
`[The problem to be solved by the invention] The
`conventional technique described above, in which
`the stator core is formed with the divided core
`blocks arranged in an annular form are welded and
`fixed to each other at the yoke portions, has
`advantages that the operation of winding the coil
`
`Petitioners Exhibit 1004
`Page 2
`
`

`

`
`
`Japanese Patent Application Laid-open No. 2000-184635
`
`(3)
`
`the wound coil can be easily
`or attaching
`performed and the number of coils can be
`increased. Still, the welding operation, which is an
`essential aspect, is not something that can be
`easily performed, and involves heat or the like that
`might damage the wound coil. An error in the
`welding operation might lead to insufficient fixing
`between the yoke portions, leading to a brittle
`structure, resulting in low reliability and low
`durability. The operation of coating the portion of
`the divided core block where the wound coil is to
`be attached is a cumbersome operation also
`resulting in an increased number of operation
`steps.
`[0008] The present invention is made in view of the
`problems of the conventional technique described
`above, and an object of the present invention is to
`provide a motor with excellent reliability and
`durability that can be assembled/manufactured
`with a small number of operation steps.
`[0009]
`[Means for solving the problem] 1. A motor
`according to claim 1 for achieving the object
`includes: a stator including a stator core and a
`wound coil; and a rotor disposed on an inner side
`of the stator, wherein the stator core includes: a
`plurality of divided core blocks each including a
`yoke portion and a salient pole protruding from the
`yoke portion that are integrally formed; and a
`divided core holding member in a form with a
`plurality of holding portions, holding the divided
`core blocks in an arranged form, sequentially
`coupled to each other via deformable portions that
`are deformable. In this configuration, although not
`limited, the yoke portion may have a substantially
`arch form, and the salient pole may be formed to
`protrude inward in a radial direction from the yoke
`portion.
`[0010] In the invention according to claim 1, the
`plurality of divided core blocks are prepared, and
`are held by the divided core holding member with
`the deformable portions deformed as appropriate
`to achieve an easier operation. In this state, a coil
`wire is wound around the salient pole of each
`divided core block or the wound coil is attached to
`the salient pole. The wound coil may be attached
`to the salient pole before the divided core holding
`member holds the divided core block.
`[0011] Then, the divided core holding members,
`holding the divided core blocks, are deformed at
`the deformable portions to have the holding
`
`members arranged in a substantially annular form.
`Thus, the yoke portions of the divided core block
`are formed into a substantially annular form with
`the salient poles substantially oriented toward the
`center. In this state, both end portions of the
`divided core holding members are joined and fixed
`to each other, and thus the stator is formed.
`[0012] Thus, the divided core blocks are not
`integrated by welding as in the conventional
`technique, and are integrated via the divided core
`holding members, whereby assembling and
`manufacturing operations can be extremely easily
`performed with a much smaller number of
`operation steps. With no welding operation
`performed, the configuration is free of risks such
`as the wound coil being damaged by heat or an
`erroneous welding operation or
`insufficient
`welding resulting
`in a
`failure
`to achieve a
`sufficiently high strength of the stator, and thus can
`achieve high reliability and durability.
`[0013] The wound coil can be easily attached to
`the divided core block held by the holding member
`of the divided core holding member, or the divided
`core block in a state of not being held. Thus, the
`wound coil can be attached with an easy operation,
`and the number of operation steps can be reduced.
`The operation of attaching the wound coil is less
`likely to be hindered by the other salient poles.
`Thus, the number of times the coil wire is wound
`can be increased, and the motor can have an
`increased output or can be downsized.
`[0014] 2. Although not limited, in the invention
`described above, the divided core holding member
`includes insulting covering portion that covers a
`portion of each of the divided core blocks where
`the wound coil is attached, as in the motor
`according to claim 2.
`[0015] The portion of the stator core where the
`wound coil is attached may be coated and
`insulated with resin or the like to guarantee
`insulation from the wound coil. The invention
`according to claim 2 features the divided core
`holding member including the covering portions so
`that the insulating coating operation can be
`omitted, whereby the number of operation steps in
`the assembling/manufacturing operation of the
`motor can be reduced.
`[0016] 3. Although not limited, in the invention
`described above, the divided core block is held by
`the divided core holding member with a part of the
`divided core block press fitted in the covering
`
`Petitioners Exhibit 1004
`Page 3
`
`

`

`
`
`Japanese Patent Application Laid-open No. 2000-184635
`
`(4)
`
`portions of the divided core holding member, as in
`the motor according to claim 3.
`[0017] The divided core block is held by the
`covering portions of the divided core holding
`member. Thus, the covering portions have both
`the insulating covering function and a function of
`holding the divided core block, whereby a more
`simple and efficient configuration can be achieved
`compared with a configuration where a structure of
`holding
`the divided core block
`is provided
`separately from the covering portion.
`[0018]
`invention] An
`the
`for carrying out
`[Mode
`embodiment of the present invention is described
`below with reference to the drawings. Fig. 1 is a
`perspective view illustrating a main part of a motor
`according to the embodiment of the present
`invention. Fig. 2 is a perspective view of a stator
`core according to the embodiment of the present
`invention. Fig. 3 is a plan view of a divided core
`plate forming the stator core according to the
`embodiment of the present invention. Fig. 4 is a
`plan view of a main part of the stator core before
`being formed into an annular form according to the
`embodiment of the present invention. Fig. 5 is as
`plan view illustrating a main part of the stator core
`after being formed into the annular form according
`to the embodiment of the present invention. Fig. 6
`is a cross-sectional view taken along line vi-vi in
`Fig. 4. Fig. 7 is an exploded cross-sectional view
`of Fig. 6.
`[0019] First of all, an overall schematic
`configuration of a motor according to this first
`embodiment is described with reference to Fig. 1.
`This motor 1 includes: a rotor 2 as a rotating
`member; a stator 3 as a fixed member; and an
`unillustrated motor housing incorporating these
`components; and the like.
`[0020] The rotor 2 is formed with an output shaft
`(shaft) 5 inserted in a through hole formed at the
`center of the rotor core 4 to be integrally fixed. A
`plurality of permanent magnets (not illustrated)
`having a flat plate form or a curved (arch shaped)
`plate form are attached to the rotor core 4. The
`output shaft 5 of the rotor 2 is supported by the
`motor housing.
`[0021] The stator 3 includes: a stator core 6 having
`a substantially cylindrical shape; and a plurality of
`wound coils 7. The stator core 6 is formed with a
`plurality of salient poles 9, protruding inward in a
`radial direction, which are integrally formed on an
`
`inner side of the yoke portion 8 having a
`substantially cylindrically shape, in such a manner
`that a slot is formed between each adjacent salient
`poles 9. The stator 3 is fixed to an inner side of
`the motor housing.
`[0022] The rotor 2 is inserted and disposed while
`being separated from the salient poles 9 of the
`stator core 6 with a predetermined gap provided in
`between. The wound coils 7 are each wound
`around a corresponding one of the salient poles 9
`of the stator core 6. When the wound coils 7 are
`energized by being provided with current at a
`predetermined timing, the rotor 2 is rotated by an
`electromagnetic action achieved with
`the
`permanent magnets of the rotor 2.
`[0023] Next, a structure and a manufacturing
`method of the stator core 6 are described with
`reference to Figs. 2 to 7. The stator core 6
`includes: a plurality of (eight in Fig. 2) divided core
`blocks 10 each formed by stacking and integrating
`a plurality of divided core plates 11; and a pair of
`divided core holding members 12 that integrally
`holds a divided core block 10 in an annular
`arrangement.
`[0024] As illustrated in Fig. 3, the divided core
`plates 11 each include: a divided yoke portion 11a
`formed to have a substantially arch shape; a
`salient pole 11b protruding inward in the radial
`direction from the divided yoke portion 11a; and an
`arch portion 11c formed at a distal end portion of
`the salient pole 11b to have a substantially arch
`form. The plate with these components integrally
`formed is manufactured by punching a magnetic
`metal sheet with a press machine.
`[0025] Although not elaborated in the figure, one
`or a plurality of half-pierces (embosses) are further
`formed on the divided yoke portion 11a and/or the
`salient pole 11b of the divided core plate 11 by the
`processing by the press machine. The half-
`pierce includes a protrusion formed on one surface
`of the divided core plate 11 and a recess formed
`at a corresponding portion on the other surface.
`The protrusion is formed to have a shape capable
`of being fitted or press fitted in the recess. The
`thickness of the divided core plate 11 is not
`particularly limited. In this embodiment, the
`thickness is set to be about 0.5 mm.
`[0026] The plurality of the divided core plates 11
`each having the configuration described above are
`prepared, and the divided core plates 11 are
`stacked and
`integrated with
`the half-pierce
`(protrusion) of one plate press fit in the half-pierce
`of another one of the plates. Thus, the divided
`core block 10
`is
`formed with
`integrated
`
`Petitioners Exhibit 1004
`Page 4
`
`

`

`
`
`Japanese Patent Application Laid-open No. 2000-184635
`
`(5)
`
`components including: a yoke portion (stacked
`divided yoke portion) including the stacked divided
`yoke portions 11a; salient poles (the stacked
`salient poles) 9 including the stacked salient
`poles 11b; and an arch portion obtained by
`stacking (stacked arch portion) 11c.
`[0027] As illustrated in Fig. 4 to Fig. 7, the divided
`core holding member 12 includes a plurality of
`holding portions 13 for holding the divided core
`block 10 that are arranged on a single line and are
`coupled to each other in series via thin deformable
`portions 12a. The adjacent holding portions 13
`can pivot with each other with the deformable
`portion 12a deformed.
`[0028] The holding portions 13 of the divided core
`holding member 12 each include: a yoke end
`surface covering portion 13a that is in a flat plate
`form with substantially the same shape as the
`yoke portion 11a of the divided core block 10; a
`salient pole end surface covering portion 13b that
`is in a flat plate form with substantially the same
`shape as the salient pole 11b of the divided core
`block 10; an arch end surface covering portion 13c
`that is in a flat plate form with substantially the
`same shape as the arch portion 11c of the divided
`core block 10; a pair of yoke side surface covering
`portions 13d for covering side surfaces of the yoke
`portion 11a of the divided core block 10 on the side
`of the salient pole 11b; a pair of salient pole side
`surface covering portions 13e in a flat plate form
`for covering both side surfaces of the salient pole
`11b of the divided core block 10; and a pair of arch
`side surface covering portions 13f in an arch plate
`form for covering side surfaces of the arch portion
`11c of the divided core block 10 on the side of the
`salient pole 11b, and is integrally formed by
`molding using an
`insulating
`thermoset resin
`material. Examples of the resin material that can
`be used for the divided core holding member 12
`include polybutylene terephthalate (PBT) and
`polyethylene terephthalate (PET).
`[0029] As illustrated in Fig. 7, the divided core
`block 10 is held by the holding portions 13 of the
`divided core holding members 12, with a
`corresponding portion inserted or press fitted in a
`pair of rectangular U shaped portions of the
`divided core holding member 12, each defined by
`each of the pair of yoke side surface covering
`portions 13d, the salient pole side surface covering
`portion 13e, and the arch side surface covering
`portion 13f, in such a manner that the yoke portion
`11a, the salient pole 11b, and the arch portion 11c
`respectively have end surfaces in contact with the
`yoke end surface covering portion 13a, the salient
`pole end surface covering portion 13b, and the
`
`arch end surface covering portion 13c from the
`inner side.
`[0030] The plurality of divided core blocks 10 are
`held by being clamped between the pair of divided
`core holding member 12 in an upper and lower
`direction, and are in the state where the holding
`portions 13 are,
`for example, substantially
`arranged on a single line by being pivoted with the
`deformable portions 12a deformed as illustrated in
`Fig. 4 for the sake of workability. In this state, the
`coil is wound around the salient pole 11b (9),
`covered by the covering portions 13b and 13e of
`the divided core block 10 to be insulated, with a
`dedicated or a general purpose winder or manually.
`Thus, the wound coil 7 is formed, and is fixed with
`resin soaked into the wound coil 7 or through other
`suitable ways. The wound coil 7 may be attached
`to the salient pole 11b of the divided core block 10
`with the wound coil 7, wound in advance, attached
`to the salient pole 11b.
`[0031] The divided core holding member 12, to
`which the wound coils 7 are attached, holding the
`plurality of divided core blocks 10 has the holding
`portions 13 pivoted about the deformable portions
`12a to be in an annular form, in such a manner that
`the yoke portions 11a of the divided core block 10
`form a substantially annular form with the salient
`poles 11b oriented toward the center. In this state,
`a gap is formed between each adjacent arch
`portions 11c.
`[0032] Next, both end portions of the pair of divided
`core holding members 12 are joined and fixed to
`each other, whereby the stator core 6 (stator 3) in
`an annular form as illustrated in Fig. 2 and Fig. 5
`is manufactured. How both end portions of the
`divided core holding members 12 are joined is not
`particularly limited, and fixing using an adhesive
`14 (see Fig. 2) may be employed for example.
`Alternatively, engagement portions that engage
`with each other may be formed in advance on both
`end portions of the divided core holding members
`12, and the fixing may be achieved with the
`engagement portions. Furthermore, the joined
`portions may be welded to each other.
`[0033] In the present embodiment as described
`above, the plurality of divided core block 10 are
`clamped by the pair of divided core holding
`members 12 to be held by the holding portions 13,
`and the pair of divided core holding members 12
`have their both end portions joined and fixed to
`each other to be integrated, whereby the stator 3
`is formed.
`
`Petitioners Exhibit 1004
`Page 5
`
`

`

`
`
`Japanese Patent Application Laid-open No. 2000-184635
`
`(6)
`
`[0034] Thus, the divided core blocks are not
`integrated by welding as in the conventional
`technique, and are integrated via the divided core
`holding members 12, whereby assembling and
`manufacturing operations can be extremely easily
`performed with a much smaller number of
`operation steps. Furthermore, with no welding
`operation performed, the configuration is free of
`risks such as the wound coil being damaged by
`heat or an erroneous welding operation or
`insufficient welding resulting in a failure to achieve
`a sufficiently high strength of the stator, and thus
`can achieve high reliability and durability.
`[0035] The holding portions 13 of the divided core
`holding member 12 holding the divided core blocks
`10 can be pivoted with respect to each other about
`the deformable portions 12a, whereby the wound
`coil attaching operation can be easily performed
`with
`the divided core holding members 12
`deformed as appropriate to be suitable for the
`operation. Similarly, the divided core holding
`members 12 can be deformed at the deformable
`portions so that the divided core blocks 10 can be
`integrally fixed while being annularly arranged.
`This operation can be easily performed.
`[0036] In the embodiment described above, the
`divided core holding member 12 includes the
`covering portion 13a to 13f that are integrally
`formed and cover the salient pole 11b of the
`divided core block 10 as well as a portion
`therearound. Thus, the parts 13b and 13d to 13f
`of the covering portion is provided between the
`wound coil 7 that has been attached and the
`divided core block 10, whereby excellent insulation
`can be achieved between the wound coil 7 and the
`divided core block 10. Thus, no additional coating
`operation or the like for coating the divided core
`block 10 in an insulating manner is required.
`According to the embodiment described above,
`the assembling/manufacturing operation for the
`motor can be easily performed and involves a
`smaller number of operation steps.
`[0037] The divided core block 10 is held by the
`holding portions 13 of the divided core holding
`member 12 with the corresponding portion of the
`divided core block 10 inserted or press fitted in the
`portion defined by the covering portions 13d to 13f
`of the divided core holding member 12. Thus, the
`covering portions of the divided core holding
`member 12 can achieve both covering and holding
`functions. Thus, a more simple and efficient
`
`configuration can be achieved compared with a
`configuration having each of
`the
`functions
`implemented with an
`independent dedicated
`structure.
`is
`[0038] The embodiment described above
`described for facilitating an understanding of the
`present invention and is not described to limit the
`present
`invention.
` Thus,
`the components
`disclosed in the embodiment described above
`include all design changes and their equivalents
`within the technical scope of the present invention.
`[0039] In the embodiment described above, the
`motor according to the present invention is formed
`with permanent magnets
`fixed
`to
`the rotor.
`However, such a motor should not be construed in
`a limiting sense, and the motor according to the
`present invention includes any inner rotor type
`motor in which a wound coil is wound around a
`salient pole of a stator, and thus may be an SR
`motor with a rotor provided with no magnet.
`[0040] The number, the shape, the thickness, the
`size and the like of the divided core block of the
`stator core and the divided core plate of the divided
`core block may be set as appropriate.
`[0041] The configuration of the divided core
`holding member is not limited to that in the
`embodiment described above. A yoke outer
`surface covering portion, for covering a side
`surface of the yoke portion 11a of the divided core
`block 10 on the side opposite to the side of the
`salient pole 11b may be integrally formed. Thus,
`the divided core block 10 can be more effectively
`held. In such a configuration, the deformable
`portion may be integrally formed along the yoke
`outer surface-covering portion to have a long
`length and a higher rigidity.
`[0042] Furthermore, in the embodiment described
`above, the divided core block 10 is held while
`being clamped by the pair of divided core holding
`members 12 in the upper and lower direction.
`Alternatively, the length (depth) of the covering
`portions 13d to 13f may be increased so that the
`holding can be achieved with a single divided core
`holding member. The divided core block 10 may
`be additionally bonded and fixed to the divided
`core holding member 12 with an adhesive or the
`like. Engagement portions as counterparts may be
`provided to the divided core block 10 and the
`divided core holding member 12, and engaged to
`achieve a structure with a higher integrity.
`[0043] One or a plurality of metal terminals for
`
`Petitioners Exhibit 1004
`Page 6
`
`

`

`Japanese Patent Application Laid-open No. 2000-184635
`
`(7)
`
`[Reference Signs List]
`1 … motor
`2 … rotor
`3 … stator
`4 … rotor core
`5 … output shaft
`6 … stator core
`7 … wound coil
`8 … yoke portion
`9 … salient pole
`10 … divided core block
`11 … divided core plate
`11a … yoke portion
`11b … salient pole
`11c … arch portion
`12 … divided core holding member
`12a … deformable portion
`13 … holding member
`13a to 13f … covering portion
`14 … adhesive
`
`
`
`
`
`
`
`establishing connection and fixing between end
`portions of the coil wires may be provided on the
`outer side of the yoke end surface covering portion
`13a of the divided core holding member 12, for
`example. In such a configuration, the metal
`terminal may be fixed in the following manner. For
`example, the metal terminal in a form of a pin may
`be press fitted and fixed in a closed hole formed
`on the yoke end surface covering portion 13a of
`the divided core holding member 12, from the
`outer side.
`[0044] The holding portions 13 of the divided core
`holding member 12 are integrally formed with the
`thin deformable portions 12a to be coupled to each
`other. Alternatively, the holding portions may each
`be independently molded with a corresponding
`one of the holding members, and may be pivotally
`coupled to each other via deformable portions
`including a hinge and the like.
`[0045] [Effect of the invention] According to the
`present invention described above, a motor with
`excellent reliability and durability can be provided
`through an assembling/manufacturing operation
`involving a small number of steps.
`
`[Brief description of the drawings]
`Fig. 1 is a perspective view illustrating a main part
`of a motor according to an embodiment of the
`present invention.
`Fig. 2 is a perspective view of a stator core
`according to the embodiment of the present
`invention.
`Fig. 3 is a plan view of a divided core plate forming
`the stator core according to the embodiment of the
`present invention.
`Fig. 4 is a plan view of a main part of the stator
`core before being formed into an annular form
`according to the embodiment of the present
`invention.
`Fig. 5 is as plan view illustrating a main part of the
`stator core after being formed into the annular form
`according to the embodiment of the present
`invention.
`Fig. 6 is a cross-sectional view taken along line vi-
`vi in Fig. 4.
`Fig. 7 is an exploded cross-sectional view of Fig.
`6.
`Fig. 8 is a perspective view of a stator core
`according to a conventional technique.
`Fig. 9 is a perspective view of a stator core
`according to another conventional technique.
`
`
`Petitioners Exhibit 1004
`Page 7
`
`

`

`Japanese Patent Application Laid-open No. 2000-184635
`
`(8)
`
`
`
`[FIG. 2]
`
`[FIG. 6]
`
`[FIG. 1]
`
`[FIG. 3]
`
`[FIG. 4]
`
`[FIG. 8]
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`Petitioners Exhibit 1004
`Page 8
`
`

`

`
`
`[FIG. 5]
`
`(9)
`
`Japanese Patent Application Laid-open No. 2000-184635
`
`[FIG. 7]
`
`[FIG. 9]
`
`
`
`Petitioners Exhibit 1004
`Page 9
`
`

`

`_CERTIFICATE OF TRANSLATION |
`TO WHOM IT MAY CONCERN: _
`This is to certify that the translation is accurate andI am competentto translate
`from Japanese to English.
`—
`
`File name: JP2000-184635 a Japanese PublishedPatent ApplicationNo. 2000-184635
`
`Dated: May 10, 2017
`
`Kyokd Sato
`Project Manager
`HONYAKU USAINC,
`A notary public or otherofficer completing thiscertificate verifies onlythe
`identity of the individual who signed the document to which thiscertificate
`is attached, and not the truthfulness, accuracy, or validity of that document.
`
`State of California, County of Los Angeles
`_ Subscribed and sworn to (or affirmed)
`Before me this /eo™day of MAY
`By _. KYOKo Sat O_
`
`2017
`
` Ny
`
`provedtomeon
`Thebasis of satisfactory evidence to be the
`Person(s) who appeared before me.
`
`KEWIMJIMA==2
`&
`COMM. #2037282
`=
`NOTARY PUBLIC- CALIFORNIA @
`179 LOS ANGELES COUNTY 0.
`4S“ COMM. EXPIRES AUG. 17, 2017 +
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`Petitioners Exhibit 1004
`
`
`
`
`
`Page 10
`
`Petitioners Exhibit 1004
`Page 10
`
`