CN110957880B - Small linear motor structure and implementation method thereof - Google Patents
Small linear motor structure and implementation method thereof Download PDFInfo
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- CN110957880B CN110957880B CN201911368312.7A CN201911368312A CN110957880B CN 110957880 B CN110957880 B CN 110957880B CN 201911368312 A CN201911368312 A CN 201911368312A CN 110957880 B CN110957880 B CN 110957880B
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 230000005684 electric field Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000012634 fragment Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a small linear motor structure, which comprises a shell, wherein a bottom plate is connected below the shell, a stator assembly is connected above the bottom plate, a vibrator assembly is arranged in the shell and comprises a coil and an FPC (flexible printed circuit), the FPC is connected above the bottom plate, the coil is connected above the FPC, the coil is electrically connected with the FPC, the vibrator assembly comprises a pole piece, a plurality of magnetic steels and a balancing weight, the magnetic steels are arranged in parallel, the magnetic steels are all positioned in the balancing weight, the pole piece is connected above the balancing weight, and the vibrator assembly is connected above the bottom plate through a spring plate; the invention also discloses a method for realizing the small linear motor structure; the limiting bulges are arranged at the two ends of the balancing weight and provide limitation for the vibration of the motor along the X axis, and in mechanical impact, the elastic sheet cannot be damaged by large displacement in the vibration direction (the X axis direction), so that the service life of the motor is not influenced.
Description
Technical Field
The invention belongs to the technical field of linear motors, and particularly relates to a small linear motor structure and an implementation method thereof.
Background
For the high pursuit of vibration sensation, the smart wearing is the same as the smart phone. However, the smart phone is large in size, the motor used is large in size, high vibration feeling is easily achieved, smart wearing is limited by size, and a structure with a compact structure and a high space utilization rate must be provided in a limited space as much as possible to achieve satisfactory touch feeling experience. Meanwhile, intelligent wearing is mainly used in sports occasions, and how to provide enough driving structures and reliable mechanical structures in a small space becomes a problem of continuous research.
Disclosure of Invention
The present invention is directed to a small linear motor structure to solve the above problems. The small linear motor structure provided by the invention has the characteristics of simpler structure, convenience in manufacturing, high structural utilization rate and strong vibration sense.
Another object of the present invention is to provide a method for implementing a small linear motor structure.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a small-size linear motor structure, which comprises a housin, the below of casing is connected with the bottom plate, the top of bottom plate is connected with stator module, the inside of casing is equipped with vibrator subassembly, stator module includes coil and FPC circuit board, wherein, FPC circuit board connects the top at the bottom plate, the top at FPC circuit board is connected to the coil, and coil and FPC circuit board electric connection, vibrator subassembly includes the pole piece, a plurality of magnet steel and balancing weight, wherein, a plurality of magnet steel sets up side by side, and a plurality of magnet steel all is located the inside of balancing weight, the top at the balancing weight is connected to the pole piece, vibrator subassembly passes through the top that the shell fragment is connected at the bottom plate.
Furthermore, two ends of the balancing weight are respectively connected with a limiting bulge.
Furthermore, the number of the magnetic steels is three, and the three magnetic steels are bonded in parallel through glue.
Furthermore, the weight block is internally provided with a containing cavity, and the three magnetic steels are positioned in the containing cavity.
In the invention, two elastic sheets are arranged, and the two elastic sheets are respectively positioned at two ends of the balancing weight.
In the invention, a blocking piece is connected above the elastic piece.
In the invention, a position where the elastic sheet contacts with the bottom of the balancing weight is connected with a limiting block.
Further, in the present invention, the pole piece is a magnetic conductive member.
Further, the method for implementing the small linear motor structure comprises the following steps:
the shell and the bottom plate form a closed cavity for accommodating the internal vibrator component;
the vibrator component mainly comprises a pole piece, a plurality of magnetic steels and a counterweight block, wherein the magnetic steels provide a magnetic field for the motor to drive;
thirdly, the coil and the FPC form a circuit, an electric field is formed when the circuit is electrified, the electric field and the magnetic field interact with each other, and the motor is driven to vibrate along the X axis;
the elastic sheet is connected with the bottom plate and the vibrator assembly and provides elasticity for movement, so that the motor vibrates in a reciprocating manner along the X axis;
limiting bulges at two ends of the balancing weight provide limitation for the vibration of the motor along the X axis;
and sixthly, the separation blade is matched with the pole piece to limit the upper direction of the Z axis of the motor, and the limiting block limits the lower direction of the Z axis of the motor.
Further, according to the implementation method of the small-sized linear motor structure, two ends of the balancing weight are respectively connected with the limiting protrusions, the number of the magnetic steels is three, the three magnetic steels are bonded in parallel through glue, the accommodating cavity is formed in the balancing weight, the three magnetic steels are located in the accommodating cavity, the number of the elastic sheets is two, the two elastic sheets are respectively located at two ends of the balancing weight, the blocking piece is connected above the elastic sheet, the limiting block is connected to the position, in contact with the bottom of the balancing weight, of the elastic sheet, and the pole piece is a magnetic conduction component.
Compared with the prior art, the invention has the beneficial effects that:
1. the limiting bulges are arranged at the two ends of the balancing weight and provide limitation for the vibration of the motor along the X axis, and in mechanical impact, the large displacement in the vibration direction (the X axis direction) is ensured not to damage the elastic sheet, so that the service life of the motor is influenced;
2. the limiting block arranged on the elastic sheet changes the fixed boundary of the elastic sheet from a point to a surface, prolongs the service life of the elastic sheet, and provides limiting for the downward direction of the Z axis of the motor;
3. the pole piece can fold the magnetic field and increase the magnetic induction intensity at the coil side, thereby increasing the driving force;
4. according to the invention, through structural optimization, the functions of the components are expanded as much as possible, so that the number of parts is reduced, the structure is simpler, the manufacture is convenient, the structural utilization rate is high, and the vibration sense is strong;
5. the pole piece and the baffle plate are matched to provide limit for the Z-axis upward direction of the motor.
Drawings
FIG. 1 is an exploded view of the structure of the present invention;
FIG. 2 is a schematic view of the interior of the housing of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic structural view of a weight member according to the present invention;
FIG. 5 is a schematic diagram of the electromagnetic drive of the present invention;
in the figure: 1. a housing; 2. pole pieces; 3. magnetic steel; 4. a balancing weight; 41. a limiting bulge; 42. a cavity; 5. a coil; 6. an FPC circuit board; 7. a spring plate; 8. a baffle plate; 9. a limiting block; 10. a base plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a small-size linear motor structure, which comprises a housin 1, the below of casing 1 is connected with bottom plate 10, the top of bottom plate 10 is connected with stator module, the inside of casing 1 is equipped with vibrator subassembly, stator module includes coil 5 and FPC circuit board 6, wherein, FPC circuit board 6 is connected in the top of bottom plate 10, coil 5 is connected in the top of FPC circuit board 6, and coil 5 and FPC circuit board 6 electric connection, vibrator subassembly includes pole piece 2, a plurality of magnet steel 3 and balancing weight 4, wherein, a plurality of magnet steel 3 sets up side by side, and a plurality of magnet steel 3 all is located the inside of balancing weight 4, pole piece 2 is connected in the top of balancing weight 4, vibrator subassembly passes through shell fragment 7 and connects the top at bottom plate 10.
Further, two ends of the counterweight block 4 are respectively connected with a limiting bulge 41.
By adopting the technical scheme, the limiting protrusion 41 provides limiting for the vibration of the motor along the X axis (according to different signal inputs, the electrified coil generates different driving forces in the magnetic field generated by the magnetic steel, but the moving direction always follows the direction in which the elastic sheet is most easily deformed, which is determined by a magnetic circuit and a mechanical structure).
Further, magnet steel 3 is equipped with threely altogether, and three magnet steel 3 bonds side by side through glue, and the inside of balancing weight 4 has been seted up and has been held chamber 42, and three magnet steel 3 is located the inside that holds chamber 42.
Through adopting above-mentioned technical scheme, three magnet steel 3 provide the magnetic field for motor drive.
Furthermore, the number of the elastic pieces 7 is two, and the two elastic pieces 7 are respectively located at two ends of the counterweight block 4.
By adopting the technical scheme, the elastic sheet 7 is connected with the bottom plate 10 and the vibrator assembly to provide elasticity for movement, so that the motor vibrates in a reciprocating manner along the X axis.
Further, the pole piece 2 is a magnetic conductive member. Such as ferrite, stainless steel, electroplated SPCC, etc., have better ability of resisting environmental corrosion under the prerequisite in the aspect of guaranteeing good magnetic permeability, and stainless steel component is selected for use in this embodiment.
By adopting the technical scheme, the pole piece 2 made of the magnetic conducting material can draw the magnetic field in, and the magnetic induction intensity of the coil side is increased, so that the driving force is increased.
Example 2
The present embodiment is different from embodiment 1 in that: furthermore, a blocking piece 8 is connected above the elastic piece 7.
Through adopting above-mentioned technical scheme, separation blade 8 and the cooperation of pole piece 2 provide spacingly for motor Z axial upper direction.
Example 3
The present embodiment is different from embodiment 1 in that: furthermore, the position where the elastic sheet 7 contacts with the bottom of the counterweight block 4 is connected with a limiting block 9.
Through adopting above-mentioned technical scheme, stopper 9 not only makes the fixed boundary of shell fragment 7 become the face from the point, has increaseed the shell fragment life-span, provides spacingly for motor Z axle downward direction simultaneously.
Further, the method for implementing the small linear motor structure of the present invention comprises the following steps:
the shell 1 and the bottom plate 10 form a closed cavity for accommodating the internal vibrator components;
the vibrator component mainly comprises a pole piece 2, three magnetic steels 3 and a balancing weight 4, wherein the three magnetic steels 3 provide a magnetic field for driving a motor;
thirdly, the coil 5 and the FPC 6 form a circuit, an electric field is formed when the circuit is electrified, the electric field and the magnetic field interact with each other, and the motor is driven to vibrate along the X axis;
the elastic sheet 7 is connected with the bottom plate 10 and the vibrator assembly and provides elasticity for movement, so that the motor vibrates in a reciprocating manner along the X axis;
the limiting bulges 41 at the two ends of the balancing weight 4 provide limiting for the vibration of the motor along the X axis;
and (VI), the separation blade 8 and the pole piece 2 are matched to provide limit for the upper direction of the Z axis of the motor, and the limit block 9 provides limit for the lower direction of the Z axis of the motor.
In summary, the limiting protrusions 41 are arranged at the two ends of the counterweight block 4, the limiting protrusions 41 provide limiting for the motor to vibrate along the X axis, and in mechanical impact, it is ensured that the spring plate 7 is not damaged by large displacement in the vibration direction (X axis direction), and the service life of the motor is not influenced; the limiting block 9 arranged on the elastic sheet 7 enables the fixed boundary of the elastic sheet 7 to be changed from a point to a surface, prolongs the service life of the elastic sheet 7 and provides limiting for the downward direction of the Z axis of the motor; the pole piece 2 can fold the magnetic field and increase the magnetic induction intensity at the coil side, thereby increasing the driving force; the pole piece 2 and the baffle plate 8 are matched to provide limit for the Z-axis upward direction of the motor.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A small linear motor structure comprising a casing (1), characterized in that: the lower part of the shell (1) is connected with a bottom plate (10), the upper part of the bottom plate (10) is connected with a stator assembly, the inner part of the shell (1) is provided with a vibrator assembly, the stator assembly comprises a coil (5) and an FPC circuit board (6), wherein the FPC circuit board (6) is connected above the bottom plate (10), the coil (5) is connected above the FPC circuit board (6), the coil (5) is electrically connected with the FPC circuit board (6), the vibrator assembly comprises a pole piece (2), a plurality of magnetic steels (3) and a balancing weight (4), wherein the plurality of magnetic steels (3) are arranged in parallel, the plurality of magnetic steels (3) are all positioned inside the balancing weight (4), the pole piece (2) is connected above the balancing weight (4), and the vibrator assembly is connected above the bottom plate (10) through an elastic sheet (7);
two ends of the balancing weight (4) are respectively connected with a limiting bulge (41), and the limiting bulge (41) provides limiting for vibration of the vibrator component along the X axis;
a blocking piece (8) is connected above the elastic sheet (7);
the position where the elastic sheet (7) is contacted with the bottom of the balancing weight (4) is connected with a limiting block (9);
the pole piece (2) is a magnetic conduction component;
separation blade (8) and pole piece (2) cooperation provide spacingly for motor Z axle upper direction, and stopper (9) provide spacingly for motor Z axle downward direction.
2. A compact linear motor structure as claimed in claim 1, characterized in that: the number of the magnetic steels (3) is three, and the three magnetic steels (3) are bonded in parallel through glue.
3. A compact linear motor structure as claimed in claim 2, characterized in that: the balancing weight (4) is internally provided with a containing cavity (42), and the three magnetic steels (3) are positioned in the containing cavity (42).
4. A compact linear motor structure as claimed in claim 3, characterized in that: the elastic pieces (7) are provided with two elastic pieces, and the two elastic pieces (7) are respectively positioned at two ends of the balancing weight (4).
5. A method of implementing a compact linear motor structure according to any one of claims 1 to 4, comprising the steps of:
the shell (1) and the bottom plate (10) form a closed cavity for accommodating the internal vibrator component;
the vibrator component mainly comprises a pole piece (2), a plurality of magnetic steels (3) and a balancing weight (4), and the magnetic steels (3) provide a magnetic field for driving a motor;
the coil (5) and the FPC (6) form a circuit, an electric field is formed when the circuit is electrified, the electric field and the magnetic field interact with each other, and the vibrator assembly is driven to vibrate along the X axis;
the elastic sheet (7) is connected with the bottom plate (10) and the vibrator component to provide elasticity for movement, so that the vibrator component vibrates in a reciprocating manner along the X axis;
limiting bulges (41) at two ends of the balancing weight (4) provide limitation for the vibration of the vibrator component along the X axis;
and (VI), the separation blade (8) and the pole piece (2) are matched to provide limit for the upper direction of the Z axis of the motor, and the limit block (9) provides limit for the lower direction of the Z axis of the motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911368312.7A CN110957880B (en) | 2019-12-26 | 2019-12-26 | Small linear motor structure and implementation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911368312.7A CN110957880B (en) | 2019-12-26 | 2019-12-26 | Small linear motor structure and implementation method thereof |
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| CN110957880A CN110957880A (en) | 2020-04-03 |
| CN110957880B true CN110957880B (en) | 2021-11-09 |
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| CN111463987B (en) * | 2020-05-11 | 2021-09-14 | 浙江省东阳市东磁诚基电子有限公司 | Multidirectional vibration motor and implementation method thereof |
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| CN1525434A (en) * | 2003-02-28 | 2004-09-01 | �����ǵ��ӹɷ�����˾ | Vibrator and method for manufacturing the same |
| CN203734498U (en) * | 2013-01-22 | 2014-07-23 | 美蓓亚株式会社 | Vibrator-mounted holder, and vibration generator |
| WO2019102704A1 (en) * | 2017-11-22 | 2019-05-31 | 日本電産コパル株式会社 | Linear vibration motor and electronic apparatus |
| CN110086313A (en) * | 2019-05-20 | 2019-08-02 | 领先科技(东台)有限公司 | A kind of linear vibration motor with S type spring leaf |
| CN209731036U (en) * | 2019-06-17 | 2019-12-03 | 重庆市灵龙电子有限公司 | A kind of linear motor based on magnetic damping |
| CN209844810U (en) * | 2019-05-10 | 2019-12-24 | 领先科技(东台)有限公司 | Linear vibration motor with zigzag spring piece |
-
2019
- 2019-12-26 CN CN201911368312.7A patent/CN110957880B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525434A (en) * | 2003-02-28 | 2004-09-01 | �����ǵ��ӹɷ�����˾ | Vibrator and method for manufacturing the same |
| CN203734498U (en) * | 2013-01-22 | 2014-07-23 | 美蓓亚株式会社 | Vibrator-mounted holder, and vibration generator |
| WO2019102704A1 (en) * | 2017-11-22 | 2019-05-31 | 日本電産コパル株式会社 | Linear vibration motor and electronic apparatus |
| CN209844810U (en) * | 2019-05-10 | 2019-12-24 | 领先科技(东台)有限公司 | Linear vibration motor with zigzag spring piece |
| CN110086313A (en) * | 2019-05-20 | 2019-08-02 | 领先科技(东台)有限公司 | A kind of linear vibration motor with S type spring leaf |
| CN209731036U (en) * | 2019-06-17 | 2019-12-03 | 重庆市灵龙电子有限公司 | A kind of linear motor based on magnetic damping |
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Denomination of invention: A small linear motor structure and its implementation Effective date of registration: 20220622 Granted publication date: 20211109 Pledgee: Dongyang Branch of China Construction Bank Co.,Ltd. Pledgor: ZHEJIANG DONGYANG DONGCI CHENGJI ELECTRONIC Co.,Ltd. Registration number: Y2022330001025 |
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