CN107528443B - Linear up-down vibration motor with pulsation preventing function - Google Patents
Linear up-down vibration motor with pulsation preventing function Download PDFInfo
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- CN107528443B CN107528443B CN201710650853.3A CN201710650853A CN107528443B CN 107528443 B CN107528443 B CN 107528443B CN 201710650853 A CN201710650853 A CN 201710650853A CN 107528443 B CN107528443 B CN 107528443B
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- 230000010349 pulsation Effects 0.000 title claims abstract description 46
- 239000012141 concentrate Substances 0.000 claims abstract description 11
- 241000237983 Trochidae Species 0.000 claims abstract 2
- 230000000149 penetrating effect Effects 0.000 claims description 19
- 230000009471 action Effects 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 235000014676 Phragmites communis Nutrition 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000012779 reinforcing material Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005672 electromagnetic field Effects 0.000 description 13
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 206010044565 Tremor Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Classifications
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The present application relates to a linear up-down vibration motor having a pulsation preventing function, and more particularly, to a vibration preventing linear up-down vibration motor including a housing formed by closing a circuit with a magnetic field, comprising: and a yoke bracket which is combined with the F-PCB, the yoke, the coil and the spring, comprises a vertical protruding part protruding upwards from the central part of the plane, and is combined with the top shell. The up-and-down vibration motor provided by the application improves the magnetic force and concentrates the improved magnetic force, thereby having the effect of improving the vibration force of the vibration motor.
Description
Technical Field
The present invention relates to a vertical vibration motor, and more particularly, to a linear vertical vibration motor which can prevent chattering, improve magnetic force, and concentrate the improved magnetic force, thereby improving the vibration force of the vibration motor.
Background
With the recent rapid development of wireless communication technology, portable communication devices have been increasingly miniaturized and lightened, and according to the trend of miniaturization and lightening, components including a mechanism device, an IC chip, and a circuit mounted inside the portable communication devices have been highly integrated and highly functionalized, so that improvement in size and shape is required to improve space utilization.
However, a flat vibration motor mounted inside a portable communication device to alert of an incoming call by silent vibration has been studied in great numbers against the above trend.
An initial type of a vibration motor mounted in a portable communication device is a rotary type vibration motor having a stator and a rotor as basic structures, in which the rotor is fixed to a shaft support of the stator and rotated by the shaft support to generate vibration, and in order to increase a vibration force, the vibration force is improved by increasing a volume of the rotor or increasing a rotation number, but there are structural problems in that the motor is limited in terms of miniaturization, and in that there are many difficulties in generating high vibration, and a lifetime of a certain time or more cannot be secured.
In order to improve the problems in the above-described rotary type vibration motor, recently, a vibration motor in the form of an up-and-down vibration type actuator has been proposed.
The vibration motor of the up-down vibration type actuator includes an upper casing and a lower casing which are mutually combined, a magnetic force generating member formed on at least one surface of the upper casing and the lower casing, a magnet for applying a pulling force or a repulsive force in a direction opposite to the magnetic force generating member, a weight which is integrally installed with the magnet and increases a vibration force by moving up and down, an elastic member which is positioned on at least one of an upper surface and a lower surface of the weight and elastically supports the weight, and a fixing member which fixes the other end of the elastic member to the upper casing and the lower casing.
Compared with the rotary vibration motor, the vibration motor in the form of the up-down vibration type actuator can prolong the service life, overcome the limitation of the size and achieve high response speed.
In addition, the up-and-down vibration motor can produce a more excellent vibration motor, and by preventing the internal components from receiving the impact of the vibrator, the life of the vibration motor can be prolonged, and the vibration force of the vibrator can be improved, and there is a need to continuously develop a vibration motor that further improves durability and vibration force.
Literature of the prior art
[ Patent literature ]
(Patent document 0001) Korean patent laid-open publication No. 10-2010-007331 (2010.07.01.)
Disclosure of Invention
Problems to be solved
The invention aims to overcome the defects of the prior art and provide a vibration motor which improves magnetic force and concentrates the improved magnetic force so as to further improve vibration force.
The purpose of the invention is realized in the following way:
a linear up-down vibration motor having a pulsation preventing function, comprising:
a yoke bracket 10 having an F-PCB20, a yoke 40, a coil 30, and a spring 50, which are combined, and including a vertical protrusion 11 protruding upward from a planar center portion, and combined with a top case 90;
An F-PCB20 having a side portion penetrating through the vertical protrusion 11 and coupled to the plane of the yoke bracket 10 to supply an external power to the coil 30;
A coil 30 penetrating through the vertical protrusion 11 at the center thereof and vertically coupled to the plane of the F-PCB20, and generating vertical vibration of the vibrator by the action of the magnet 70;
a yoke 40 having a center penetrating the vertical protrusion 11 and coupled to a plane of the coil 30 to concentrate a flow of an internal magnetic field of the coil 30;
A spring 50 having a center penetrating the vertical protrusion 11 and coupled to the plane of the yoke 40, and providing elasticity for amplifying vibration in the up-down direction;
A plate 60 as a vibrator coupled to an upper portion of the spring 50, an inner periphery of the plate being spaced apart from an outer periphery of the vertical protrusion 11, the coil 30, and the yoke 40, and focusing a flow of a magnetic field of the magnet 70 so as to vibrate in a vertical direction in a state of penetrating the vertical protrusion 11, the coil 30, and the yoke 40 at a center thereof when vibrating in the vertical direction by an elastic action of the spring 50;
A magnet 70 as a vibrator coupled to an upper plane of the plate 60, the magnet being provided with an inner periphery spaced apart from an outer periphery of the vertical protrusion 11, the coil 30, and the yoke 40, and generating a magnetic field by an action of the coil 30 to generate vertical vibration so as to vibrate in the vertical direction in a state of penetrating the vertical protrusion 11, the coil 30, and the yoke 40 at a center thereof when vibrating in the vertical direction by an elastic action of the spring 50;
A weight 80 as a vibrator coupled to the upper portion of the spring 50 and the magnet 70 at the outer periphery of the plate 60, for fixing the magnet 70 and the plate 60 to the spring 50 more firmly and amplifying the vibration by its own weight when the spring 50 vibrates up and down;
The top case 90 is formed in a cover shape opened downward in combination with the upper edge of the yoke bracket 10, and forms a housing when combined with the yoke bracket 10.
Effects of the invention
Therefore, the present invention can increase the magnetic force and concentrate the increased magnetic force, thereby further increasing the vibration force of the vibration motor.
In addition, the invention can combine the parts more easily, the production process is simple and convenient to manage, and the combination reject ratio of the produced products can be reduced to the maximum extent.
Meanwhile, the invention can reduce tremble and noise generated by tremble during vibration.
Drawings
Fig. 1 is an exploded perspective view of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 2 is a sectional view showing a state where a ring yoke 40 is coupled to a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
fig. 3 is an oblique view of a yoke bracket 10 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 4 is an enlarged schematic view of the peripheral portion of the vertical protrusion 11 of the yoke bracket 10 of the linear up-down vibration motor having the pulsation preventing function according to the first embodiment of the present invention;
Fig. 5 is a schematic view of electromagnetic field force measurement image data when the yoke bracket 10 is disposed such that the thickness of the peripheral portion a2 and the thickness of the outer side portion a1 of the vertical protrusion 11 of fig. 4 are the same;
fig. 6 is a schematic view of electromagnetic field force measurement image data when the yoke bracket 10 is disposed such that the thickness of the peripheral portion a2 of the vertical protrusion 11 of fig. 4 is half the thickness of the outer portion a 1;
Fig. 7 is a sectional view showing a state where a reed yoke 40 is coupled to a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 8 is an oblique view of a reed yoke 40 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
fig. 9 is a plan view of a spring 50 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 10 is a sectional view of one side of a top case 90 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
fig. 11 is an oblique view of a top case 90 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
fig. 12 is a combined oblique view of the combination of the top case 90 and the spring 50 of the linear up-down vibration motor having the pulsation preventing function according to the first embodiment of the present invention;
Fig. 13 is a side view showing the combination of the top case 90, the spring 50 and the yoke bracket 10 of the linear up-down vibration motor having the pulsation preventing function according to the first embodiment of the present invention;
fig. 14 is a combined sectional view of a combination of an insulating PET (P) between a coil 30 and a yoke 40 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 15 is a combined sectional view of an insulating layer C formed between a coil 30 and a yoke 40 of a linear up-down vibration motor having a pulsation preventing function and a surface of a vertical protrusion 11 according to a first embodiment of the present invention;
Fig. 16 is a combined sectional view of a reinforcing material 100 combined between the bottom center of a top case 90 of a linear up-down vibration motor having a pulsation preventing function according to the first embodiment of the present invention and the upper plane of the vertical protrusion 11.
Reference numerals
10: Yoke bracket
20：F-PCB
30: Coil
40: Magnetic yoke
50: Spring
60: Board board
70: Magnet
80: Weight block
90: Top housing
Detailed Description
The invention is susceptible to various modifications and alternative embodiments, specific embodiments being shown by way of example in the drawings and will be described in detail herein. However, the present invention is not limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. The purpose of this example is to help those skilled in the art to better understand the present invention. Accordingly, the shapes of the elements shown in the drawings may be exaggerated for better illustration, and detailed description thereof will be omitted when it is considered that the detailed description of the related art is not in order to prevent the understanding of the present invention in the course of the description of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is an exploded perspective view of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 2 is a sectional view showing a state where a ring yoke 40 is coupled to a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
fig. 3 is an oblique view of a yoke bracket 10 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 4 is an enlarged schematic view of the peripheral portion of the vertical protrusion 11 of the yoke bracket 10 of the linear up-down vibration motor having the pulsation preventing function according to the first embodiment of the present invention;
Fig. 5 is a schematic view of electromagnetic field force measurement image data when the yoke bracket 10 is disposed such that the thickness of the peripheral portion a2 and the thickness of the outer side portion a1 of the vertical protrusion 11 of fig. 4 are the same;
fig. 6 is a schematic view of electromagnetic field force measurement image data when the yoke bracket 10 is disposed such that the thickness of the peripheral portion a2 of the vertical protrusion 11 of fig. 4 is half the thickness of the outer portion a 1;
Fig. 7 is a sectional view showing a state where a reed yoke 40 is coupled to a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 8 is an oblique view of a reed yoke 40 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
fig. 9 is a plan view of a spring 50 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 10 is a sectional view of one side of a top case 90 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
fig. 11 is an oblique view of a top case 90 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
fig. 12 is a combined oblique view of the combination of the top case 90 and the spring 50 of the linear up-down vibration motor having the pulsation preventing function according to the first embodiment of the present invention;
Fig. 13 is a side view showing the combination of the top case 90, the spring 50 and the yoke bracket 10 of the linear up-down vibration motor having the pulsation preventing function according to the first embodiment of the present invention;
fig. 14 is a combined sectional view of a combination of an insulating PET (P) between a coil 30 and a yoke 40 of a linear up-down vibration motor having a pulsation preventing function according to a first embodiment of the present invention;
Fig. 15 is a combined sectional view of an insulating layer C formed between a coil 30 and a yoke 40 of a linear up-down vibration motor having a pulsation preventing function and a surface of a vertical protrusion 11 according to a first embodiment of the present invention;
Fig. 16 is a combined sectional view of a reinforcing material 100 combined between the bottom center of a top case 90 of a linear up-down vibration motor having a pulsation preventing function according to the first embodiment of the present invention and the upper plane of the vertical protrusion 11.
As shown in fig. 1 to 2, the vibration motor of the present invention includes:
a yoke bracket 10 having an F-PCB20, a yoke 40, a coil 30, and a spring 50, which are combined, and including a vertical protrusion 11 protruding upward from a planar center portion, and combined with a top case 90;
An F-PCB20 having a side portion penetrating through the vertical protrusion 11 and coupled to the plane of the yoke bracket 10 to supply an external power to the coil 30;
A coil 30 penetrating through the vertical protrusion 11 at the center thereof and vertically coupled to the plane of the F-PCB20, and generating vertical vibration of the vibrator by the action of the magnet 70;
a yoke 40 having a center penetrating the vertical protrusion 11 and coupled to a plane of the coil 30 to concentrate a flow of an internal magnetic field of the coil 30;
A spring 50 having a center penetrating the vertical protrusion 11 and coupled to the plane of the yoke 40, and providing elasticity for amplifying vibration in the up-down direction;
A plate 60 as a vibrator coupled to an upper portion of the spring 50, an inner periphery of the plate being spaced apart from an outer periphery of the vertical protrusion 11, the coil 30, and the yoke 40, and focusing a flow of a magnetic field of the magnet 70 so as to vibrate in a vertical direction in a state of penetrating the vertical protrusion 11, the coil 30, and the yoke 40 at a center thereof when vibrating in the vertical direction by an elastic action of the spring 50;
A magnet 70 as a vibrator coupled to an upper plane of the plate 60, the magnet being provided with an inner periphery spaced apart from an outer periphery of the vertical protrusion 11, the coil 30, and the yoke 40, and generating a magnetic field by an action of the coil 30 to generate vertical vibration so as to vibrate in the vertical direction in a state of penetrating the vertical protrusion 11, the coil 30, and the yoke 40 at a center thereof when vibrating in the vertical direction by an elastic action of the spring 50;
A weight 80 as a vibrator coupled to the upper portion of the spring 50 and the magnet 70 at the outer periphery of the plate 60, for fixing the magnet 70 and the plate 60 to the spring 50 more firmly and amplifying the vibration by its own weight when the spring 50 vibrates up and down;
a top case 90 coupled to an upper edge of the yoke bracket 10 and formed in a cover opened downward to form a housing when coupled to the yoke bracket 10.
The yoke bracket 10 includes the F-PCB20, the coil 30, and the spring 50, and includes a vertical protrusion 11 protruding upward from a planar center portion thereof, and is coupled to the top case 90.
Therefore, the coil 30 and the yoke 40 can be connected around the vertical protrusion 11, so that the coil 30 and the yoke 40 can be easily connected to the yoke bracket 10, the process management becomes simple, and the connection failure rate is reduced.
At this time, as shown in fig. 3, the yoke bracket 10 may further include a plurality of horizontal protrusions 12 formed to protrude outward.
At this time, as shown in fig. 10 to 11, the horizontal protrusion 12 is preferably coupled to the protrusion coupling groove 92 formed in the top case 90, and is preferably provided with an appearance of a cutting width of the protrusion coupling groove 92 or less.
Accordingly, as shown in fig. 13, the horizontal protrusion 12 is inserted into and engaged with the protrusion engaging groove 92 by aligning the positions of the horizontal protrusion 12 and the protrusion engaging groove 92 to press the yoke bracket 10 and the top case 90 in the up-down direction, so that the yoke bracket 10 and the top case 90 can be easily engaged, and the process management becomes simple, thereby reducing the rate of defective engagement.
At this time, as shown in fig. 4, the yoke bracket 10 may have a thickness of a peripheral portion a2 of the vertical protrusion 11 greater than or equal to 50% of a thickness of the outer portion a 1.
At this time, as shown in fig. 5 to 6, fig. 5 is a schematic view of electromagnetic field force measurement image data when the yoke bracket 10 is disposed such that the thickness of the peripheral portion a2 of the vertical protrusion 11 of fig. 4 is the same as the thickness of the outer portion a1, and fig. 6 is a schematic view of electromagnetic field force measurement image data when the yoke bracket 10 is disposed such that the thickness of the peripheral portion a2 of the vertical protrusion 11 of fig. 4 is half the thickness of the outer portion a1, and when comparing the electromagnetic field force measurement data of fig. 5 and 6, it is known that the electromagnetic field force measurement value is higher than that of fig. 5 and 6 because the force of the electromagnetic field increases by about 20% as the force of the electromagnetic field increases when the thickness of the peripheral portion a2 of the vertical protrusion 11 is greater than 50% of the thickness of the outer portion a 1.
That is, this is because the thinner the thickness of the peripheral portion a2 (50% or less of the thickness of the outer portion a 1) is, the worse the electromagnetic field fluidity due to the magnetic field saturation is, while the thicker the thickness thereof (50% or more of the thickness of the outer portion a 1) is, the better the magnetic field fluidity is, and the electromagnetic field fluidity is improved, whereby the electromagnetic field force can be controlled by the above phenomenon to be about 20%.
One side of the F-PCB20 penetrates the vertical protrusion 11 and is coupled to the plane of the yoke bracket 10 to supply an external power to the coil 30.
The coil 30 is vertically coupled to the plane of the F-PCB20 through the vertical protrusion 11 at the center thereof, and generates vertical vibration of the vibrator by the action of the magnet 70.
Therefore, the coupling coil 30 can be penetrated around the vertical protrusion 11, so that the yoke bracket 10 and the coil 30 can be easily coupled, the process management becomes simple, and the coupling failure rate can be reduced.
The yoke 40 penetrates through the vertical protrusion 11 at the center thereof and is coupled to the plane of the coil 30, so as to concentrate the flow of the internal magnetic field of the coil 30.
In this case, the yoke 40 may be formed in a ring shape such that the center thereof penetrates the vertical protrusion 11 and is coupled to the plane of the coil 30.
Therefore, the yoke 40 can be penetrated around the vertical protrusion 11, so that the yoke bracket 10 and the yoke 40 can be easily coupled, the process management becomes simple, and the coupling failure rate is reduced.
In addition, the outer circumference of the vertical protrusion 11 penetrates the yoke 40 to firmly and tightly couple, thereby preventing the balance from being damaged by the impact of the yoke 40, preventing the balance deformation of the yoke 40 due to the falling impact of the vibrator, improving the falling reliability, preventing the generation of pulsation and reducing the noise caused by the pulsation.
In this case, as shown in fig. 7 to 8, the yoke 40 may be formed as a reed type with a downward opening so as to be coupled to an upper plane of the coil 30 and an upper portion of the vertical protrusion 11.
Therefore, the coupling yoke 40 can be covered on the upper portion of the vertical protrusion 11, so that the yoke bracket 10 and the yoke 40 can be easily coupled, the process management becomes simple, and the coupling defect rate is reduced.
The spring 50 has a center penetrating the vertical protrusion 11 and coupled to the plane of the yoke 40, and provides elasticity for amplifying vibration in the up-down direction.
At this time, as shown in fig. 9, the spring 50 may further include a plurality of outer protruding portions 52 protruding outward.
At this time, as shown in fig. 10 to 12, the outer protruding portion 52 is preferably coupled to the protruding coupling groove 92 formed in the top case 90, and is preferably provided with an appearance of a cutting width of the protruding portion coupling groove 92 or less.
Accordingly, as shown in fig. 13, the outer protruding portion 52 is inserted into and engaged with the protruding portion engaging groove 92 by aligning the outer protruding portion 52 with the protruding portion engaging groove 92 so as to press the spring 50 and the top case 90 in the up-down direction, whereby the spring 50 and the top case 90 can be easily engaged, the process management becomes simple, and the rate of defective engagement can be reduced.
The plate 60 is coupled to an upper portion of the spring 50 as a vibrator, and has an inner periphery spaced apart from an outer periphery of the vertical protrusion 11, the coil 30, and the yoke 40, and concentrates a flow of a magnetic field of the magnet 70 to vibrate in a vertical direction in a state of penetrating the vertical protrusion 11, the coil 30, and the yoke 40 at a center thereof when vibrating in the vertical direction by an elastic action of the spring 50.
At this time, the plate 60 may be coupled to an upper portion of the magnet 70.
Accordingly, the vibration force is increased by concentrating the force of the magnetic field, and the vibration start time (RISING TIME) and the vibration stop time (FALLING TIME) are shortened.
The magnet 70 is coupled to an upper plane of the plate 60 as a vibrator, and has an inner periphery spaced apart from an outer periphery of the vertical protrusion 11, the coil 30, and the yoke 40, and generates a magnetic field by an action of the coil 30 to generate vertical vibration so as to vibrate in the vertical direction in a state of penetrating the vertical protrusion 11, the coil 30, and the yoke 40 at a center thereof when vibrating in the vertical direction by an elastic action of the spring 50.
At this time, the plurality of magnets 70 are arranged so that the vertical protrusions 11, the coils 30, and the yokes 40 are located at the center without being offset to any one side in the inward direction, and the gaps between the outer circumferences of the coils 30 and yokes 40 and the inner circumference of the magnets 70 are reduced.
Therefore, since the gaps between the outer circumferences of the coil 30 and the yoke 40 and the inner circumference of the magnet 70 are reduced, the linear motion reliability is improved, the generation of pulsation is reduced, the balanced deformation of the yoke 40 due to the falling impact of the vibrator is prevented, the falling reliability is improved, the generation of pulsation is prevented, and the noise caused by the pulsation is reduced.
The weight 80 serves as a vibrator, is coupled to the upper portion of the spring 50 and the magnet 70 at the outer periphery of the plate 60, and causes the magnet 70 and the plate 60 to be more firmly fixed to the spring 50 when the spring 50 vibrates vertically, thereby amplifying the vibration by its own weight.
The top case 90 is coupled to an upper edge of the yoke bracket 10 and is formed in a cover opened downward to form a housing when coupled to the yoke bracket 10.
At this time, as shown in fig. 10 to 13, the top case 90 may further include a concave-convex portion 91 formed with concave-convex at an upper center.
Therefore, the center portion of the top case 90 is prevented from being easily deformed by impact.
At this time, the top case 90 may further include a plurality of protrusion hooking grooves 92 formed by cutting a portion around the bottom surface to form a step on the bottom surface of the lower sidewall portion.
In this case, as shown in fig. 10 to 11, the protrusion engaging groove 92 is engaged with the horizontal protrusion 12 formed in the yoke bracket 10 and the outer protrusion 52 formed in the spring 50, and preferably has an appearance equal to or smaller than the cutting width of the horizontal protrusion 12 and the outer protrusion 52.
Accordingly, as shown in fig. 13, the horizontal protrusion 12 and the outer protrusion 52 are aligned with the protrusion engaging groove 92 so as to be coupled with the top case 90 by pressing in the vertical direction in a state where the yoke bracket 10 and the spring 50 are stacked, and the horizontal protrusion 12 and the outer protrusion 52 are inserted into and engaged with the protrusion engaging groove 92, whereby the yoke bracket 10, the spring 50, and the top case 90 are easily coupled, and the process management is simplified, and the coupling failure rate is reduced.
At this time, as shown in fig. 16, a reinforcing material 100 for preventing the top case from being deformed by external impact may be coupled between the bottom center of the top case 90 and the upper plane of the vertical protrusion 11.
The reinforcing material 100 preferably has the same height as a gap between the bottom center of the top case 90 and the upper plane of the vertical protrusion 11.
Accordingly, a gap between the center of the bottom surface of the top case 90 and the upper plane of the vertical protrusion 11 is filled, and the bottom surface of the top case 90 is supported by the support of the vertical protrusion 11, so that the center portion of the top case 90 is prevented from being deformed by an external impact.
As shown in fig. 14, an insulating PET (P) may be bonded between the coil 30 and the yoke 40 to protect the coil 30 from a phenomenon in which the insulating layer of the coil 30 is damaged to energize the yoke 40.
As shown in fig. 15, an insulating coating C for protecting the coil 30, which is a phenomenon in which the yoke 40 is energized due to damage of an insulating layer of the coil 30, may be bonded between the surface of the vertical protrusion 11 and the coil 30 and the yoke 40.
A magnetic fluid (not shown) may be applied between the vertical protrusion, the coil 30, the yoke 40, the plate 60, and the magnet 70.
Therefore, when the vibration of the vibrator (plate 60, magnet 70, weight 80) is stopped, the vibration force is suppressed by the viscosity of the fluid, the noise is reduced, the stop time (FALLING TIME) of the vibrator is shortened, and an oil film is formed between the coil 30, yoke 40, plate 60, and magnet 70, thereby preventing direct contact between the coil 30, yoke 40, and the vibrator (plate 60, magnet 70, weight 80).
At least one damper (not shown) may be coupled to at least one of the plane of the F-PCB20, the upper portion of the magnet 70, the lower portion of the magnet 70, the upper portion of the weight 80, the lower portion of the weight 80, and the upper bottom surface of the upper top case 90.
Therefore, when the vibrator (plate 60, magnet 70, weight 80) vibrates, direct contact between the yoke bracket 10, the F-PCB20, the spring 50, the top case 90 and the vibrator (plate 60, magnet 70, weight 80) is prevented, vibration force is suppressed, and the vibration range of the vibrator is limited.
Therefore, according to the right hand law of amperes, when current flows in the wire in the direction of rotating the right bolt, a magnetic field is generated in the direction of advancing the bolt, so that attraction and repulsion are generated with the permanent magnet due to the change of the alternating signal current and the direction of the magnetic field, and vertical vibration occurs.
Therefore, the present invention can increase the magnetic force and concentrate the increased magnetic force, thereby increasing the vibration force of the vibration motor.
The above-described embodiments are provided for illustrating the present invention and not for limiting it, and it should be understood by those skilled in the art that the present invention may be modified, changed or substituted for equivalents thereof without departing from the spirit and scope of the present invention, which is intended to be covered by the scope of the appended claims.
Claims (9)
1. A linear up-down vibration motor having a pulsation preventing function, comprising:
A yoke bracket (10) which is provided with an F-PCB (20), a yoke (40), a coil (30) and a spring (50) in a combined manner, comprises a vertical protruding part (11) protruding upwards from the central part of a plane, and is combined with a top shell (90);
an F-PCB (20) having a side portion penetrating through the vertical protrusion (11) and coupled to the plane of the yoke bracket (10) to supply an external power to the coil (30);
A coil (30) which is penetrated through the vertical protrusion (11) at the center and is vertically connected to the plane of the F-PCB (20), and which generates vertical vibration of the vibrator by the action of the magnet (70);
a yoke (40) having a center penetrating the vertical protrusion (11) and coupled to a plane of the coil (30) to concentrate a flow of an internal magnetic field of the coil (30);
A spring (50) which is penetrated through the vertical protrusion (11) at the center and is coupled to the plane of the yoke (40), and which provides elasticity for amplifying vibration in the up-down direction;
A plate (60) which is coupled to the upper part of the spring (50) as a vibrator, and whose inner periphery is spaced apart from the outer periphery of the vertical protrusion (11), the coil (30), and the yoke (40), and which concentrates the flow of the magnetic field of the magnet (70) so as to vibrate in the vertical direction in a state of penetrating the vertical protrusion (11), the coil (30), and the yoke (40) at the center when vibrating in the vertical direction by the elastic action of the spring (50);
A magnet (70) as a vibrator, which is coupled to an upper plane of the plate (60), and has an inner periphery spaced apart from an outer periphery of the vertical protrusion (11), the coil (30), and the yoke (40), and generates a magnetic field by acting on the coil (30) to generate vertical vibration so as to vibrate in the vertical direction in a state of penetrating the vertical protrusion (11), the coil (30), and the yoke (40) at a center thereof when vibrating in the vertical direction by an elastic action of the spring (50);
A weight (80) as a vibrator, which is coupled to the upper part of the spring (50) and the magnet (70) at the outer periphery of the plate (60), and which, when the spring (50) vibrates up and down, causes the magnet (70) and the plate (60) to be more firmly fixed to the spring (50) and amplifies the vibration by its own weight;
a top case (90) coupled to an upper edge of the yoke bracket (10) and formed in a cover form opened downward to form a housing when coupled to the yoke bracket (10);
the yoke bracket (10) further comprises a plurality of horizontal protruding parts (12) protruding outwards;
The yoke (40) is formed in a ring shape so that the center thereof penetrates the vertical protrusion (11) and is coupled to the plane of the coil (30).
2. The linear up-down vibration motor with pulsation preventing function according to claim 1, wherein: the yoke bracket (10) may have a thickness of a peripheral portion a2 of the vertical protrusion (11) greater than or equal to 50% of a thickness of an outer portion a 1.
3. The linear up-down vibration motor with pulsation preventing function according to claim 1, wherein: the magnet yoke (40) is formed by a reed type with a downward opening, and is coupled to the upper plane of the coil (30) and the upper part of the vertical protrusion (11).
4. The linear up-down vibration motor with pulsation preventing function according to claim 1, wherein: the spring (50) further includes a plurality of outer protruding portions (52) protruding outward.
5. The linear up-down vibration motor with pulsation preventing function according to claim 1, wherein: the top case (90) further includes a concave-convex portion (91) having a concave-convex formed in an upper center.
6. The linear up-down vibration motor with pulsation preventing function according to claim 1, wherein: the top case (90) further includes a plurality of protruding portion hooking grooves (92) formed by cutting a part around the bottom surface to form a step on the bottom surface of the lower side wall portion.
7. The linear up-down vibration motor with pulsation preventing function according to claim 1, wherein: an insulating PET (P) is further bonded between the coil (30) and the yoke (40) to protect the coil (30), wherein the insulating layer of the coil (30) is damaged to cause a phenomenon of energizing the yoke (40).
8. The linear up-down vibration motor with pulsation preventing function according to claim 1, wherein: an insulating coating C for protecting the coil (30) from the phenomenon of energizing the yoke (40) due to the damage of the insulating layer of the coil (30) is further bonded between the surface of the vertical protrusion (11) and the coil (30) and the yoke (40).
9. The linear up-down vibration motor with pulsation preventing function according to claim 1, wherein: a reinforcing material (100) for preventing the top case from being deformed by external impact is further bonded between the bottom center of the top case (90) and the upper plane of the vertical protrusion (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2017-0013676 | 2017-01-31 | ||
| KR1020170013676A KR101783423B1 (en) | 2017-01-31 | 2017-01-31 | Linear type vibration motor vibrated Verticality |
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| Publication Number | Publication Date |
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| CN107528443A CN107528443A (en) | 2017-12-29 |
| CN107528443B true CN107528443B (en) | 2024-05-03 |
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| CN201720955369.7U Active CN207382167U (en) | 2017-01-31 | 2017-08-02 | Possesses the linear up-down vibration motor of anti-pulsation function |
| CN201710650853.3A Active CN107528443B (en) | 2017-01-31 | 2017-08-02 | Linear up-down vibration motor with pulsation preventing function |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720955369.7U Active CN207382167U (en) | 2017-01-31 | 2017-08-02 | Possesses the linear up-down vibration motor of anti-pulsation function |
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| Country | Link |
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| KR (1) | KR101783423B1 (en) |
| CN (2) | CN207382167U (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101783423B1 (en) * | 2017-01-31 | 2017-09-29 | 주식회사 블루콤 | Linear type vibration motor vibrated Verticality |
| KR102039568B1 (en) * | 2017-12-06 | 2019-11-01 | 주식회사 엠플러스 | A linear vibration motor comprising two or more kinds of elastic bodies |
| KR102167407B1 (en) * | 2018-02-28 | 2020-10-19 | 주식회사 이엠텍 | Wide band linear motor |
| KR102306513B1 (en) * | 2018-03-05 | 2021-09-30 | 주식회사 이엠텍 | Wide band linear motor |
| KR101907520B1 (en) * | 2018-04-30 | 2018-12-05 | 주식회사 블루콤 | Rectangular vertical vibration motor |
| KR102142564B1 (en) * | 2018-10-24 | 2020-08-10 | 주식회사 엠플러스 | Sound vibration actuator |
| KR101947471B1 (en) * | 2018-11-28 | 2019-02-13 | 주식회사 블루콤 | Rectangular vertical vibration receiver |
| KR101987068B1 (en) * | 2019-03-04 | 2019-09-27 | 주식회사 블루콤 | Linear vibration actuator |
| KR102280172B1 (en) * | 2019-06-14 | 2021-07-21 | (주)파트론 | vibration generating device |
| CN110429789A (en) * | 2019-08-28 | 2019-11-08 | 领先科技(东台)有限公司 | A kind of coil is nested with the vertical linear motor of flange magnetic yoke |
| KR102144888B1 (en) * | 2020-03-24 | 2020-08-28 | 에이유에스피코리아 주식회사 | Linear vibration motor |
| CN112671200A (en) * | 2020-12-15 | 2021-04-16 | 歌尔股份有限公司 | Linear vibration motor |
| KR102588272B1 (en) * | 2023-02-03 | 2023-10-12 | 에이유에스피코리아 주식회사 | Linear type phase, and the vibration motor |
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| Publication number | Publication date |
|---|---|
| CN207382167U (en) | 2018-05-18 |
| CN107528443A (en) | 2017-12-29 |
| KR101783423B1 (en) | 2017-09-29 |
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