CN113270990A - Linear motor with long service life and high damping and implementation method thereof - Google Patents
Linear motor with long service life and high damping and implementation method thereof Download PDFInfo
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- CN113270990A CN113270990A CN202110730415.4A CN202110730415A CN113270990A CN 113270990 A CN113270990 A CN 113270990A CN 202110730415 A CN202110730415 A CN 202110730415A CN 113270990 A CN113270990 A CN 113270990A
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- motor
- linear motor
- damping
- vibrator
- high damping
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- 238000013016 damping Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 35
- 239000010959 steel Substances 0.000 claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 17
- 230000005684 electric field Effects 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 9
- 239000012634 fragment Substances 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000003292 glue Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000036413 temperature sense Effects 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)
Abstract
The invention discloses a linear motor with long service life and high damping, which comprises a shell, wherein a lower bracket is connected below the shell, a stator assembly is connected above the lower bracket, and a vibrator assembly is arranged in the shell; the invention also discloses a realization method of the linear motor with long service life and high damping. The spring group comprises four elastic sheets, the four elastic sheets are arranged on two sides of the vibration direction of the vibrator component in pairs, and the two elastic sheets positioned on the same side are arranged in a vertically crossed manner, so that the space of the motor can be fully utilized, the length of a cantilever of the motor is increased, the stress of the motor during vibration can be greatly reduced, and the service life of the motor is prolonged.
Description
Technical Field
The invention belongs to the technical field of linear motors, and particularly relates to a long-life high-damping linear motor and an implementation method thereof.
Background
With the increased competition in consumer electronics markets such as smart phones, manufacturers pay more and more attention to the touch experience of users, and currently, mobile consumer electronics in the market generally use a vibration motor as a system feedback component, such as key touch feedback of a mobile phone, vibration feedback of a game machine, and the like. With the development of consumer electronics, mobile phones, game machines and the like have higher and higher requirements on the vibration effect of motors, the vibration service life, the low-temperature vibration sense and the like.
The linear motor in the prior art provides elastic force for motor vibration through two springs, and the service life of the springs is shortened along with the increase of vibration sensation, so that the service life of the motor is shortened;
in addition, the linear motor in the prior art provides damping through magnetic fluid, and the problem that the damping effect is greatly influenced by temperature exists.
Disclosure of Invention
The present invention is directed to a long-life and high-damping linear motor, which solves the above problems. The linear motor with long service life and high damping provided by the invention has the characteristics of long service life and stable damping effect.
Another object of the present invention is to provide a method for implementing a linear motor with long service life and high damping.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high damped linear motor of high life, includes the casing, and the below of casing is connected with the bottom bracket, and the top of bottom bracket is connected with stator module, and the inside of casing is equipped with vibrator subassembly, and wherein, vibrator subassembly passes through spring assembly to be connected with the casing, and spring assembly includes four shell fragments, and wherein, two liang of settings of four shell fragments are in vibrator subassembly vibration direction's both sides, and lie in the setting of crossing from top to bottom with two shell fragments of one side.
In order to form an electric field when the motor is powered on and interact with the magnetic field to drive the motor to vibrate along the X axis, further, the stator assembly comprises an FPC circuit board and a coil, wherein the FPC circuit board is arranged above the lower bracket, the coil is arranged above the FPC circuit board, and the coil is electrically connected with the FPC circuit board.
In order to make the motor have the effect of electromagnetic damping, in the invention, an iron core is further arranged inside the coil, and two ends of the iron core are connected with pole pieces.
In order to provide a magnetic field for motor driving, in the invention, the vibrator component further comprises a first mass block and a magnetic steel group, wherein two sides of the first mass block are connected with the casing through a spring group, a cavity is arranged in the casing, the magnetic steel group comprises four magnetic steels, the four magnetic steels are arranged in parallel in pairs at two symmetrical sides in the cavity, the magnetic poles of the two magnetic steels at the same side face opposite directions, and the magnetic poles of the two magnetic steels arranged oppositely face the same direction.
In order to increase the mass of the vibrator assembly and ensure the relative symmetry of the magnetic field, the invention further comprises two second mass blocks, and the two second mass blocks are symmetrically arranged above the magnetic steel group.
In order to be used as a bearing surface of the second mass block and the magnetic steel group, the second mass block, the magnetic steel group and the gasket are convenient to be adhered and fixed.
In order to cooperate with the electromagnetic damping generated by the iron core and the pole piece and realize the high damping effect of the motor, the two ends of the first mass block in the vibration direction are respectively provided with a mounting groove, and damping foam is embedded in the mounting grooves.
Further, the implementation method of the linear motor with long service life and high damping comprises the following steps:
the shell and the lower bracket form a closed cavity for accommodating the stator assembly and the vibrator assembly inside;
the vibrator component mainly comprises a first mass block, a second mass block and a magnetic steel group, and the magnetic steel group provides a magnetic field for driving the motor;
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 spring group is connected with the vibrator assembly and the shell and provides elasticity for movement, so that the motor reciprocates along the X axis;
and (V) the damping foam is matched with the electromagnetic damping generated by the iron core and the pole piece, so that the high-damping effect of the motor is realized.
Compared with the prior art, the invention has the beneficial effects that:
1. the spring group comprises four elastic sheets, the four elastic sheets are arranged on two sides of the vibration direction of the vibrator component in pairs, and the two elastic sheets positioned on the same side are arranged in a vertically crossed manner, so that the space of a motor can be fully utilized, the length of a cantilever of the motor is increased, the stress of the motor during vibration can be greatly reduced, and the service life of the motor is prolonged;
2. the iron core is arranged in the coil, the pole pieces are connected to two ends of the iron core, and when the motor is powered off, the iron core and the pole pieces can generate eddy currents, so that the motor has an electromagnetic damping effect;
3. according to the invention, the damping foam is arranged at the two ends of the first mass block in the vibration direction, and is matched with the electromagnetic damping generated by the iron core and the pole piece, so that the high-damping effect of the motor is realized, and the damping device has the characteristic of small influence of temperature, thereby realizing the effect of high low-temperature vibration sense.
Drawings
FIG. 1 is an exploded view of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic diagram of the electromagnetic drive of the present invention;
in the figure: 1. a housing; 2. a gasket; 3. damping foam; 4. a first mass block; 5. a coil; 6. pole pieces; 7. an FPC circuit board; 8. a lower bracket; 9. an iron core; 10. a spring set; 11. a magnetic steel group; 12. a second mass.
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. 1-3, the present invention provides the following technical solutions: the utility model provides a high damped linear motor of high life, includes casing 1, and the below of casing 1 is connected with bottom bracket 8, and the top of bottom bracket 8 is connected with stator module, and the inside of casing 1 is equipped with vibrator subassembly, and wherein, vibrator subassembly passes through spring assembly 10 to be connected with casing 1, and spring assembly 10 includes four shell fragments, and wherein, two liang of settings of four shell fragments are in vibrator subassembly vibration direction's both sides, and lie in the setting of crossing from top to bottom with two shell fragments of one side.
Specifically, stator module includes FPC circuit board 7 and coil 5, and wherein, FPC circuit board 7 sets up in the top of lower carriage 8, and coil 5 sets up in the top of FPC circuit board 7, and coil 5 and FPC circuit board 7 electric connection.
By adopting the technical scheme, the coil 5 and the FPC circuit board 7 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.
Specifically, the vibrator subassembly includes first quality piece 4 and magnet steel group 11, and wherein, the both sides of first quality piece 4 are passed through spring assembly 10 and are connected with casing 1, and casing 1's inside is equipped with the cavity, and magnet steel group 11 includes four magnet steels, and four magnet steels are two liang of to be arranged side by side in the inside symmetrical both sides of cavity, and the magnetic pole orientation that lies in two magnet steels with one side is opposite, and the magnetic pole orientation of two magnet steels that set up relatively is the same.
Through adopting above-mentioned technical scheme, provide the magnetic field for motor drive through magnet steel group 11.
Example 2
The present embodiment is different from embodiment 1 in that: specifically, coil 5's inside is equipped with iron core 9, and coil 5 bonds through glue with iron core 9, and the both ends of iron core 9 are connected with pole piece 6, and pole piece 6 passes through laser welding with iron core 9 and fixes.
Through adopting above-mentioned technical scheme, when the motor outage, iron core 9 and pole piece 6 can produce the vortex for the motor has electromagnetic damping's effect.
Specifically, the two ends of the first mass block 4 in the vibration direction are both provided with mounting grooves, and damping foam 3 is embedded into the mounting grooves.
Through adopting above-mentioned technical scheme, the electromagnetic damping cooperation that damping bubble cotton 3 and iron core 9 and pole piece 6 produced realizes the high damped effect of motor to have and receive the little characteristics of temperature influence, thereby realized the high effect of low temperature sense of shaking.
Example 3
The present embodiment is different from embodiment 1 in that: specifically, the two second mass blocks 12 are further included, and the two second mass blocks 12 are symmetrically arranged above the magnetic steel set 11.
By adopting the technical scheme, the second mass block 12 is used as a counterweight, so that the mass of the vibrator assembly is increased; the second mass block 12 can also ensure the coincidence of the central plane of the magnetic steel group 11 and the central plane of the iron core 9, so as to ensure the relative symmetry of the magnetic field.
Specifically, the damper further comprises a gasket 2, and the gasket 2 is fixed above the first mass block 4 through laser welding.
By adopting the technical scheme, the gasket 2 is used as a bearing surface of the second mass block 12 and the magnetic steel group 11, so that the second mass block 12 and the magnetic steel group 11 are conveniently bonded and fixed with the gasket 2; the second mass block 12 is bonded on the gasket 2 through glue, and the magnetic steel is bonded on the second mass block 12 through glue.
Further, the implementation method of the linear motor with long service life and high damping, provided by the invention, comprises the following steps:
the machine shell 1 and the lower bracket 8 form a closed cavity for accommodating the stator assembly and the vibrator assembly inside;
the vibrator component mainly comprises a first mass block 4, a second mass block 12 and a magnetic steel group 11, wherein the magnetic steel group 11 provides a magnetic field for driving a motor;
thirdly, the coil 5 and the FPC 7 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 spring group 10 is connected with the vibrator assembly and the machine shell 1 and provides elasticity for movement, so that the motor can reciprocate along the X axis;
and (V) the damping foam 3 is matched with the electromagnetic damping generated by the iron core 9 and the pole piece 6, so that the high-damping effect of the motor is realized.
In summary, the spring assembly 10 of the present invention includes four spring plates, two of the four spring plates are disposed on two sides of the vibration direction of the vibrator assembly, and the two spring plates located on the same side are disposed in an up-and-down crossing manner, so that the space of the motor can be fully utilized, the length of the cantilever of the motor is increased (the design of the single-side two spring plates is equivalent to the length of the cantilever which is twice that of the traditional single-side single spring plate, so the length of the cantilever of the spring plates is increased), the stress of the motor during vibration can be greatly reduced, and the service life of the motor is prolonged; according to the invention, the iron core 9 is arranged in the coil 5, the pole pieces 6 are connected with two ends of the iron core 9, and when the motor is powered off, the iron core 9 and the pole pieces 6 can generate eddy currents, so that the motor has an electromagnetic damping effect; according to the invention, the damping foam 3 is arranged at the two ends of the first mass block 4 in the vibration direction, the damping foam 3 is matched with the electromagnetic damping generated by the iron core 9 and the pole piece 6, so that the high-damping effect of the motor is realized, and the motor has the characteristic of small influence of temperature, thereby realizing the high-low-temperature vibration effect.
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 (10)
1. A linear motor of high life high damping, includes casing, its characterized in that: the below of casing is connected with the bottom bracket, and the top of bottom bracket is connected with stator module, and the inside of casing is equipped with vibrator subassembly, and wherein, vibrator subassembly passes through spring assembly and is connected with the casing, and spring assembly includes four shell fragments, and wherein, two liang of settings of four shell fragments are in vibrator subassembly vibration direction's both sides, and lie in the setting of crossing from top to bottom with two shell fragments of one side.
2. A high life, high damping linear motor as claimed in claim 1, wherein: stator module includes FPC circuit board and coil, and wherein, FPC circuit board sets up in the top of lower carriage, and the coil setting is in the top of FPC circuit board, and coil and FPC circuit board electric connection.
3. A high life, high damping linear motor as claimed in claim 2, wherein: an iron core is arranged inside the coil.
4. A high life, high damping linear motor as claimed in claim 3, wherein: and two ends of the iron core are connected with pole pieces.
5. A high life, high damping linear motor as claimed in claim 1, wherein: the vibrator subassembly includes first quality piece and magnet steel group, and wherein, the both sides of first quality piece are passed through spring assembly and are connected with the casing, and the inside of casing is equipped with the cavity, and magnet steel group includes four magnet steels, and four two liang of magnet steels set up in the inside symmetrical both sides of cavity side by side.
6. A high life, high damping linear motor as claimed in claim 5, wherein: the two second mass blocks are symmetrically arranged above the magnetic steel group.
7. A high life, high damping linear motor as claimed in claim 5, wherein: the first mass block is arranged above the first rotor, and the second mass block is arranged above the first rotor.
8. A high life, high damping linear motor as claimed in claim 5, wherein: the both ends that first quality piece is located the vibration direction all are equipped with the mounting groove, and the embedding is provided with the damping bubble cotton in the mounting groove.
9. A high life, high damping linear motor as claimed in claim 5, wherein: the magnetic poles of two magnetic steels on the same side face in opposite directions, and the magnetic poles of two magnetic steels arranged oppositely face in the same direction.
10. A method for realizing a high lifetime and high damping linear motor according to any of claims 1-9, comprising the steps of:
the shell and the lower bracket form a closed cavity for accommodating the stator assembly and the vibrator assembly inside;
the vibrator component mainly comprises a first mass block, a second mass block and a magnetic steel group, and the magnetic steel group provides a magnetic field for driving the motor;
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 spring group is connected with the vibrator assembly and the shell and provides elasticity for movement, so that the motor reciprocates along the X axis;
and (V) the damping foam is matched with the electromagnetic damping generated by the iron core and the pole piece, so that the high-damping effect of the motor is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730415.4A CN113270990A (en) | 2021-06-29 | 2021-06-29 | Linear motor with long service life and high damping and implementation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730415.4A CN113270990A (en) | 2021-06-29 | 2021-06-29 | Linear motor with long service life and high damping and implementation method thereof |
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| CN113270990A true CN113270990A (en) | 2021-08-17 |
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| CN202110730415.4A Pending CN113270990A (en) | 2021-06-29 | 2021-06-29 | Linear motor with long service life and high damping and implementation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203416119U (en) * | 2013-07-31 | 2014-01-29 | 瑞声科技(沭阳)有限公司 | Patch vibration motor |
| CN205847042U (en) * | 2016-06-23 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Vibrating motor |
| CN206195578U (en) * | 2016-07-18 | 2017-05-24 | 瑞声科技(新加坡)有限公司 | Vibration motor |
| CN207573210U (en) * | 2017-12-19 | 2018-07-03 | 歌尔科技有限公司 | Linear vibration motor |
| CN207801723U (en) * | 2018-01-30 | 2018-08-31 | 昆山联滔电子有限公司 | Linear vibration motor |
| CN209516774U (en) * | 2018-10-25 | 2019-10-18 | 华为技术有限公司 | A kind of linear vibration electric motor and terminal |
| CN111146916A (en) * | 2020-01-03 | 2020-05-12 | 浙江省东阳市东磁诚基电子有限公司 | Electromagnet type horizontal linear vibration motor and implementation method thereof |
-
2021
- 2021-06-29 CN CN202110730415.4A patent/CN113270990A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203416119U (en) * | 2013-07-31 | 2014-01-29 | 瑞声科技(沭阳)有限公司 | Patch vibration motor |
| CN205847042U (en) * | 2016-06-23 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Vibrating motor |
| CN206195578U (en) * | 2016-07-18 | 2017-05-24 | 瑞声科技(新加坡)有限公司 | Vibration motor |
| CN207573210U (en) * | 2017-12-19 | 2018-07-03 | 歌尔科技有限公司 | Linear vibration motor |
| CN207801723U (en) * | 2018-01-30 | 2018-08-31 | 昆山联滔电子有限公司 | Linear vibration motor |
| CN209516774U (en) * | 2018-10-25 | 2019-10-18 | 华为技术有限公司 | A kind of linear vibration electric motor and terminal |
| CN111146916A (en) * | 2020-01-03 | 2020-05-12 | 浙江省东阳市东磁诚基电子有限公司 | Electromagnet type horizontal linear vibration motor and implementation method thereof |
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Application publication date: 20210817 |
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