CN211296490U - Stepping motor and electronic device comprising same - Google Patents
Stepping motor and electronic device comprising same Download PDFInfo
- Publication number
- CN211296490U CN211296490U CN201922156646.XU CN201922156646U CN211296490U CN 211296490 U CN211296490 U CN 211296490U CN 201922156646 U CN201922156646 U CN 201922156646U CN 211296490 U CN211296490 U CN 211296490U
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- China
- Prior art keywords
- stepping motor
- grounding unit
- stator
- present
- housing
- Prior art date
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- 230000003993 interaction Effects 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 238000005476 soldering Methods 0.000 claims description 12
- 229910000679 solder Inorganic materials 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/40—Structural association with grounding devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
Abstract
The utility model provides a step motor. The utility model discloses a step motor includes: a housing part having an opening formed at one side; a stator part disposed inside the housing part and around which a coil is wound; a rotor portion which is disposed inside the stator portion, has a rotor shaft rotatably supported at both ends of the housing portion, and is rotatable by interaction with the stator portion; a housing portion for closing the opening of the housing portion; a circuit board disposed between the stator portion and the housing portion; and a grounding unit for making one side of the circuit substrate physically contact with the stator part.
Description
Technical Field
The present invention relates to a stepping motor and an electronic device including the same, and more particularly, to a stepping motor capable of effectively reducing electromagnetic waves of a motor and a device and an electronic device including the same.
Background
In general, a stepping motor is a motor that moves a predetermined angle at a time so as to correspond to the number of input pulses.
Since the number of input pulses is completely proportional to the rotation angle of the motor, the rotation angle of the stepping motor can be accurately controlled, and the stepping motor is widely used in office equipment such as printers and copiers, and communication equipment such as antennas due to the characteristic.
The existing stepping motors do not have a motor housing and a printed circuit board or a ground structure connected to an external circuit.
Therefore, when a power supply is turned on to a conventional stepping motor, the motor itself forms an electric field in accordance with an input current.
If the stepping motor having such a structure is exposed to an electric field by the electronic device, there is a problem that noise is generated.
Further, when an overvoltage or an overcurrent due to an abnormal current or an overload is applied to the stepping motor, noise is increased by giving an influence to the stepping motor or an external circuit thereof, and a problem of breakage of a circuit device is caused.
Further, since there is no path through which electromagnetic waves generated by the motor can be eliminated, the electromagnetic waves of the motor also affect an external circuit, which may cause damage to the circuit.
The prior art document related to the present invention is Korean laid-open patent publication No. 10-2010-0046651 (published: 2010, 05, 07).
SUMMERY OF THE UTILITY MODEL
Problem to be solved by the utility model
A first object of the present invention is to provide a stepping motor and an electronic apparatus including the same, in which a stable grounding structure can be formed by elastically grounding a housing of the motor to ground the circuit board.
Further, a second object of the present invention is to provide a stepping motor and an electronic apparatus including the same, in which an elastic paperclip-shaped grounding unit for grounding can be disposed in a narrow space between a motor and a circuit board to easily realize assembly and disassembly.
Means for solving the problems
In order to achieve the above object, the present invention provides a stepping motor.
The utility model discloses a step motor includes: a housing part having an opening formed at one side; a stator part disposed inside the housing part and around which a coil is wound; a rotor portion which is disposed inside the stator portion, has a rotor shaft rotatably supported at both ends of the housing portion, and is rotatable by interaction with the stator portion; a housing portion for sealing the opening of the housing portion; a circuit board disposed between the stator portion and the housing portion; and a grounding unit for making one side of the circuit substrate physically contact with the stator part.
Preferably, one side surface of the grounding means is connected to the circuit board by soldering, and the other side surface of the grounding means is in contact with one side surface of the stator portion.
Preferably, one side surface of the grounding unit is perpendicular to a rotation axis direction of the rotor shaft, and the other side surface of the grounding unit is parallel to the rotation axis direction of the rotor shaft.
Preferably, an upper portion of the other side surface of the ground unit forms a contact point with an inner circumferential surface of the housing portion.
Preferably, an elastic piece is formed on the other side surface of the grounding unit, the elastic piece is pre-pressed in a direction perpendicular to a rotation axis direction of the rotor shaft, and the elastic piece is formed at the center of the other side surface of the grounding unit.
Further, the elastic piece is preferably formed as a plate spring.
Preferably, one or more positioning protrusions coupled to a partial region of the circuit board are formed on one side surface of the ground unit.
Preferably, a positioning portion is formed in a cut-out shape in a partial region of the circuit board, and the positioning portion is formed at a position corresponding to the positioning protrusion.
Preferably, a hollow portion is formed at one end of one side surface of the grounding unit, and the hollow portion and a soldering portion of the circuit board are soldered to form an electrical contact point.
Preferably, one side surface of the grounding unit is disposed inside the housing portion, and the other side surface of the grounding unit is in contact with an inner circumferential surface of the housing portion.
Preferably, the cover portion has a groove portion surrounding the ground unit in a non-contact manner.
According to another embodiment, the present invention provides an electronic device including the above stepping motor.
Effect of the utility model
According to the technical scheme as described above, the utility model discloses have following effect, promptly, the utility model discloses the accessible makes circuit substrate's ground connection elastically at the shell of motor to can form stable ground structure.
Furthermore, the present invention has an effect that the ground unit having the elastic clip shape for grounding can be easily assembled and disassembled through the narrow space between the motor and the circuit board.
Drawings
Fig. 1 is an exploded perspective view showing a stepping motor according to the present invention.
Fig. 2 is a perspective view showing the stepping motor according to the present invention.
Fig. 3 is a longitudinal sectional view showing the stepping motor of the present invention.
Fig. 4 is a perspective view showing a coupling relationship between the stator portion, the circuit board, and the cover portion according to the present invention.
Fig. 5 is a perspective view showing an arrangement state of the ground unit according to the present invention.
Fig. 6 and 7 are perspective views showing the grounding unit of the present invention.
Fig. 8 is a perspective view showing an arrangement state of the elastic sheet of the present invention.
Fig. 9 is a sectional view showing the arrangement state of the elastic piece of the present invention.
Fig. 10 and 11 are perspective views showing a process of disposing the ground unit according to the present invention.
Fig. 12 is an enlarged perspective view illustrating a portion a in fig. 11.
Fig. 13 and 14 are perspective views showing a state in which the elastic piece of the grounding unit of the present invention is disposed between the bobbin and the housing.
Fig. 15 is a perspective view showing a coupling relationship between the outer shell portion and the outer cover portion of the present invention.
Fig. 16 is a perspective view showing an inner side portion of the outer cover portion of the present invention.
Description of reference numerals
100: the outer shell portion 110: opening of the container
200: the stator portion 210: winding shaft
220: first coil 230: second coil
240: the bracket part 300: rotor part
310: permanent magnet 320: rotor shaft
400: the outer cover portion 410: cable connecting hole
420: the connector 430: vertical wall
431: groove 500: circuit board
510: solder portion 520: positioning part
600: the grounding unit 610: first body
611: hollow portion 620: second body
621: elastic piece 620 a: center hole
630: a curved portion.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can implement the present invention.
The present invention can be implemented in various different embodiments, and is not limited to the embodiments described in the present specification.
In order to clearly explain the present invention, portions that are not related to the description are omitted, and the same reference numerals are used for the same or similar components throughout the specification.
In the following, a certain structure is disposed or arranged "on (or under)" a component or "on (or under)" an upper side (or under) a component, which means that a certain structure is disposed or arranged on (or under) the component in a contacting manner.
Further, this is not limited to the case where no other structure is provided between the above-described member and another structure provided or disposed on the upper side (or lower side) of the member.
The stepping motor and the electronic device including the stepping motor according to the present invention will be described below with reference to the accompanying drawings.
The utility model discloses an electronic equipment is the equipment including step motor. The electronic device is various devices including a stepping motor, and the technical field of the devices is not limited.
The stepping motor of the present invention is explained.
Preferably, the utility model discloses a step motor is step motor for the antenna drive.
Fig. 1 is an exploded perspective view showing a stepping motor according to the present invention. Fig. 2 is a perspective view showing the stepping motor according to the present invention.
Referring to fig. 1 and 2, a stepping motor according to the present invention includes a housing 100, a stator 200, a rotor 300, a cover 400, a circuit board 500, and a ground unit 600.
The housing portion 100 of the present invention is formed in a cylindrical shape. An opening 110 is formed at one side of the housing part 100. The other side of the housing portion 100 is closed.
A stator unit 200 is inserted into the housing 100.
The stator portion 200 includes a bobbin 210, a first coil 220, and a second coil 230.
The bobbin 210 has a round bar shape having a predetermined length, and a pair of winding regions for winding the first coil 220 and the second coil 230 are formed by cutting on both left and right sides of a position halved on the bobbin 210.
The pair of winding regions is divided by the stepped portions 211, 212, 213 cut in the above-described manner.
A first stepped portion 211 is formed at one side of the bobbin 210. A second stepped portion 212 is formed on the other side of the bobbin 210. A third stepped portion 213 is formed between the first stepped portion 211 and the second stepped portion 212.
A first coil 220 is wound around a region between the first stepped portion 211 and the third stepped portion 213.
The second coil 230 is wound around a region between the third stepped portion 213 and the second stepped portion 212.
The rotor portion 300 of the present invention is inserted into the bobbin 210.
The rotor 300 is provided with permanent magnets 310 having different magnetic poles to form magnetic force.
The rotor shaft 320 is provided to penetrate the permanent magnet 310.
The permanent magnet 310 is rotatable by electromagnetic interaction with the stator portion 200.
One end of the rotor shaft 320 penetrates a rotor shaft through hole (not shown) formed at the center of one side of the housing part 100, and the other end of the rotor shaft 320 penetrates the other side of the bobbin 210 to be rotatably supported.
A disc-shaped holder 240 is provided on one side of the bobbin 210, and a magnet for sensing and transmitting a signal is mounted on the holder 240 to detect the rotation speed and the rotation direction. A receiving space 214 is formed at one side of the bobbin 210. The holder 240 is inserted into and fixed to the receiving space 214. The rotor shaft 320 penetrates the holder 240.
The circuit board 500 of the present invention is disposed on one side of the bobbin 210, and the other side of the circuit board 500 is disposed in a manner facing one side of the bracket 240.
Cover part 400 is disposed on one surface side of circuit board 500.
The cover part 400 is coupled to one end of the housing part 100. The cover part 400 closes the opening 110 of the housing part 100. The circuit board 500 is covered by the cover 400.
Thus, the circuit board 500 of the present invention is disposed between the stator portion 200 and the housing portion 400.
The housing 400 of the present invention is formed with a cable connection hole 410. The cable connection hole 410 has a rectangular shape.
One end of the cable 10 having a predetermined length is connected to the circuit board 500 through the cable connection hole 410. The other end of the cable 10 is positioned outside the cable connection hole 410 and connected to the connector 420.
Further, the grounding unit 600 of the present invention grounds the circuit board 500 and the stator portion 200. That is, the grounding unit 600 physically contacts one side of the circuit board 500 with the stator portion 200.
Fig. 3 is a longitudinal sectional view showing the stepping motor of the present invention. Fig. 4 is a perspective view showing a coupling relationship between the stator portion, the circuit board, and the cover portion according to the present invention. Fig. 5 is a perspective view showing an arrangement state of the ground unit according to the present invention.
Referring to fig. 3 to 5, a side surface of the ground unit 600 of the present invention is connected to the circuit board 500 by soldering.
The other side surface of the grounding unit 600 is in contact with one side surface of the stator portion 200.
In the circuit board 500 of the present invention, a solder portion 510 is formed at a part of a corner of one surface. Thus, one side surface of the ground unit 600 is fixed to the soldering portion 510 formed on one surface of the circuit board 500 by soldering.
In addition, the other side of the grounding unit 600 of the present invention is bent and contacts the outer periphery of the bobbin 210. Preferably, a resilient contact is used.
An inner circumferential surface of the case 100 surrounding the bobbin 210 is in contact with an upper portion of the other side surface of the grounding unit 600.
One side surface of the grounding unit 600 is perpendicular to the rotation axis direction of the rotor shaft 320.
The other side surface of the grounding unit 600 is parallel to the rotation axis direction of the rotor shaft 320.
Among them, it is preferable that the ground unit 600 of the present invention is formed of a metal sheet having elasticity as a plate spring.
Thus, the present invention can ground the circuit board 500 to the outside of the bobbin 210 of the motor and the housing 100 by using the ground unit 600 having the elastic clip shape.
Fig. 6 and 7 are perspective views showing the grounding unit of the present invention. Fig. 8 is a perspective view showing an arrangement state of the elastic sheet of the present invention. Fig. 9 is a sectional view showing the arrangement state of the elastic piece of the present invention.
Referring to fig. 6 to 9, the ground unit 600 of the present invention is formed in a metal plate shape.
The grounding unit 600 includes: a first body 610; a second body 620 bent from an end of the first body 610; and a bent portion 630 connecting the first body 610 and the second body 620 and making the first body 610 and the second body 620 perpendicular.
The first body 610 has a first flat surface F1. The second body 620 has a second flat surface F2.
The width of the second body 620 is greater than that of the first body 610. The second body 620 includes a section having a width gradually increasing from a curved boundary toward a distal end of the second body 620 and a section having a constant width in a width direction.
On the other hand, a hollow portion 611 is formed at an end of the first body 610. The hollow 611 corresponds to the position of the solder part 510 formed on the circuit board 500. Thus, the first body 610 and the soldering portion 510 of the circuit board 500 are connected and fixed by soldering through the hollow portion 611.
A first positioning protrusion 612 and a second positioning protrusion 613 bent perpendicular to the first body 610 are formed at both side portions of the first body 610.
In addition, an elastic piece 621 is formed at the center of the second body 620 of the present invention.
The elastic piece 621 forms a preload in a direction perpendicular to the rotation axis of the rotor shaft 320.
The elastic piece 621 is formed in a "U" shape. The elastic piece 621 is formed by cutting a central region of the second body 620. Thereby, a center hole 620a is formed in a center region of the second body 620. One end of the elastic piece 621 is coupled to the inner circumference of the center hole 620 a.
The elastic piece 621 has an area smaller than that of the center hole 620 a.
The elastic piece 621 is elastically movable up and down in a state where one end of the elastic piece 621 is coupled to the inner circumference of the center hole 620 a.
The other end of the elastic piece 621 is bent upward. The purpose of the curved shape is to prevent the elastic piece 621 from being plastically deformed by forming a curved shape on the surface opposite to the contact point of the elastic piece 621 to prevent deformation due to an external force. Preferably, it can be bent in a V-shape.
That is, the other side surface of the ground unit 600 of the present invention is bent from the first flat surface F1 to form a second flat surface F2.
An elastic piece that provides a pushing force that pushes the sheet outward so as to be perpendicular to the direction of the rotation axis, that is, a preload is formed in the center of the second flat surface F2.
The second flat surface F2 is provided to be in contact with one side surface of the bobbin 210, and after the bobbin 210 is provided in the housing part 100, the upper surface of the second flat surface F2 is brought into contact with the inner peripheral surface of the housing part 100 by the biasing force of the elastic piece, thereby functioning as a ground contact end.
Fig. 10 and 11 are perspective views showing a process of disposing the ground unit according to the present invention. Fig. 12 is an enlarged perspective view illustrating a portion a in fig. 11.
Referring to fig. 10 to 12, a first positioning protrusion 612 and a second positioning protrusion 613 are formed on one side surface of the ground unit 600 of the present invention.
A first positioning protrusion 612 and a second positioning protrusion 613, which are bent, are formed at both ends of the first body 610 of the ground unit 600. The first positioning protrusion 612 and the second positioning protrusion 613 are formed in a plate shape.
The positioning portion 520 is formed in a cut-out shape in a partial region of the circuit board 500. The positioning portions 520 are formed at positions corresponding to the positioning protrusions 612 and 613.
A hollow portion 611 is formed at one end of one side surface of the ground unit 600, and the hollow portion 611 is soldered to form an electrical contact point with the soldering portion 510 of the circuit board 500.
Wherein, the utility model discloses a ground connection unit 600 is formed by the copper alloy material. This improves the grounding performance of the grounding unit 600.
With the above configuration, the first flat surface F1 is formed on one side surface of the ground unit 600 of the present invention, and the first positioning protrusion 612 and the second positioning protrusion 613 are formed inward, that is, toward the circuit board 500. Positioning portions 520 (cut portions) are cut at positions corresponding to the first positioning protrusion 612 and the second positioning protrusion 613 in the circuit board 500, and the positions of the positioning portions are determined.
In particular, the positioning protrusions 612 and 613 may prevent the grounding unit 600 from rotating or moving.
Further, a hollow portion 611 is formed at one end of the first flat surface F1 at a position corresponding to the solder portion 510, and thus, the hollow portion is brought into contact with the solder portion 510 formed on the circuit board 500 to be electrically connected by soldering.
Fig. 13 and 14 are perspective views showing a state in which the elastic piece of the grounding unit of the present invention is disposed between the bobbin and the housing.
Referring to fig. 13 and 14, a side surface of the ground unit 600 of the present invention is disposed inside the cover 400.
The other side surface of the grounding unit 600 is disposed to be in contact with the inner circumferential surface of the housing part 100.
According to the above configuration, in the present invention, the ground terminal of the circuit board can be effectively grounded to the outer shell of the motor by using the ground unit having the elastic clip shape.
In particular, a side surface of the ground unit of the present invention is fixed to the circuit board by soldering. Also, the other side of the bend is in contact with the stator portion, i.e., a side portion of the bobbin.
Thus, not only the bobbin is provided inside the housing, but also the elastic piece (plate spring) of the grounding unit is brought into contact with one side surface of the bobbin, so that the upper portion of the other side surface of the grounding unit is brought into contact with the inner peripheral surface of the housing by its own elastic action, thereby functioning as a ground terminal.
Fig. 15 is a perspective view showing a coupling relationship between the outer shell portion and the outer cover portion of the present invention. Fig. 16 is a perspective view showing an inner side portion of the outer cover portion of the present invention.
Referring to fig. 15 and 16, the cover 400 of the present invention has a groove 431.
The groove 431 may surround or accommodate the ground unit 600 in a non-contact manner.
That is, a cylindrical vertical wall portion 430 is formed on the inner peripheral surface of the cover portion 400 of the present invention.
In particular, one or more groove portions 431 are formed in the vertical wall portion 430 so that the entire body portion of the ground unit 600 including the bent portion 630 does not contact the inner surface of the cover portion 400.
The groove 431 may be provided at one or more positions, so that the ground unit 600 may be easily fastened from other directions.
While the present invention has been described with reference to the specific embodiments thereof, it will be understood that various modifications may be made without departing from the scope of the present invention.
Therefore, the scope of the present invention is not limited to the illustrated embodiments, and should be determined according to the scope of the appended claims and the scope equivalent to the scope of the claims.
That is, the above-described embodiments are illustrative in all aspects and are not to be construed as restrictive, the scope of the present invention is embodied by the scope of the claims, and not the detailed description of the present invention, which should be construed as that all the meanings, ranges and embodiments of all the modifications or variations derived from the equivalent concepts of the claims of the present invention belong to the scope of the present invention.
Claims (9)
1. A stepping motor, comprising:
a housing part having an opening formed at one side;
a stator part disposed inside the housing part and around which a coil is wound;
a rotor portion which is disposed inside the stator portion, has a rotor shaft rotatably supported at both ends of the housing portion, and is rotatable by interaction with the stator portion;
a housing portion for closing the opening of the housing portion;
a circuit board disposed between the stator portion and the housing portion; and
and a grounding unit for making one side of the circuit substrate physically contact with the stator part.
2. The stepping motor according to claim 1,
one side surface of the grounding unit is connected to the circuit board by soldering,
the other side surface of the grounding unit is in contact with one side surface of the stator part.
3. The stepping motor according to claim 1,
one side surface of the grounding unit is vertical to the rotating shaft direction of the rotor shaft,
the other side surface of the grounding unit is parallel to the rotating shaft direction of the rotor shaft.
4. The stepping motor according to claim 2, wherein an upper portion of the other side surface of the grounding unit forms a contact point with an inner circumferential surface of the housing portion.
5. The stepping motor according to claim 2,
an elastic sheet is formed on the other side surface of the grounding unit,
the elastic sheet forms pre-pressure along the direction vertical to the rotating shaft direction of the rotor shaft,
the elastic piece is formed at the center of the other side surface of the grounding unit.
6. The stepping motor according to claim 5, wherein said elastic piece is formed in a plate spring manner.
7. The stepping motor according to claim 2,
a hollow part is formed at one end of one side surface of the grounding unit,
the hollow portion and a soldering portion of the circuit board are soldered to form an electrical contact point.
8. The stepping motor according to claim 1,
the outer cover part is provided with a groove part,
the groove portion surrounds the grounding unit in a non-contact manner.
9. An electronic apparatus characterized by comprising the stepping motor according to claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180156765A KR102611103B1 (en) | 2018-12-07 | 2018-12-07 | Step motor and electronic device having the same |
| KR10-2018-0156765 | 2018-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211296490U true CN211296490U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922156646.XU Active CN211296490U (en) | 2018-12-07 | 2019-12-05 | Stepping motor and electronic device comprising same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102611103B1 (en) |
| CN (1) | CN211296490U (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5110171B1 (en) * | 1967-06-13 | 1976-04-02 | ||
| JP4274473B2 (en) * | 2004-06-14 | 2009-06-10 | ミネベア株式会社 | Actuator |
| KR200460846Y1 (en) * | 2007-11-22 | 2012-06-15 | 엘지이노텍 주식회사 | Motor |
| EP2355310B1 (en) | 2008-12-11 | 2018-08-29 | Panasonic Intellectual Property Management Co., Ltd. | Motor and electric device using same |
| JP5455784B2 (en) * | 2010-05-25 | 2014-03-26 | 三菱電機株式会社 | DC motor and ventilation fan |
| KR20120094771A (en) * | 2011-02-17 | 2012-08-27 | 한라공조주식회사 | Inner type bldc moter |
| KR101916295B1 (en) * | 2012-01-09 | 2018-11-09 | 주식회사 모아텍 | Preloading apparatus of small-sized stepping motor and small-sized stepping motor having the same |
| JP5971520B2 (en) * | 2012-08-20 | 2016-08-17 | 日本電産株式会社 | motor |
| KR101677965B1 (en) * | 2014-08-27 | 2016-11-22 | 주식회사 모아텍 | Step motor |
| KR101868614B1 (en) * | 2017-04-11 | 2018-06-18 | 인지컨트롤스 주식회사 | Moter for vehicle seat blower |
-
2018
- 2018-12-07 KR KR1020180156765A patent/KR102611103B1/en active IP Right Grant
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- 2019-12-05 CN CN201922156646.XU patent/CN211296490U/en active Active
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| Publication number | Publication date |
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| KR102611103B1 (en) | 2023-12-08 |
| KR20200070467A (en) | 2020-06-18 |
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