KR101783423B1 - Linear type vibration motor vibrated Verticality - Google Patents

Abstract

The present invention relates to a vertical vibration motor, and more particularly, to a linear-type vertical vibration motor which can improve the vibration power of a vibration motor by improving a magnetic force and concentrating the improved magnetic force. The linear-type vertical vibration motor includes a yoke bracket; an F-PCB; a coil; a yoke; a spring; a plate; a magnet; a weight; and a top case.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a linear type vibration motor,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical vibration motor, and more particularly, to a linear type vertical vibration motor having an effect of enhancing a vibration force of a vibration motor by preventing a knitting vibration, .

2. Description of the Related Art Recently, with the rapid development of wireless communication technology, portable communication devices are getting smaller and lighter, and components including device devices, IC chips, and circuits mounted inside portable communication devices have become highly integrated and high- It has become necessary to evolve the size and shape in order to increase the space utilization.

In addition, a flat vibration motor mounted inside a portable communication device and informing of an incoming call by silent vibration has been studied in accordance with the above-mentioned trends.

The initial models of the vibration motor mounted inside the portable communication device were in the form of a rotary type vibration motor having a stator and a rotor as a basic constitution. The rotary type vibration motor fixes the shaft to the bracket of the stator, rotates the rotor on the shaft In order to improve the vibration power, the volume of the rotor is increased or the number of revolutions is increased to improve the vibration power. However, due to the structural problem, not only miniaturization but also difficulty in generating high vibration And the lifetime can not be guaranteed over a certain period of time.

In order to solve the problem of the above-described rotary type vibration motor, a vertical vibration type actuator vibration motor has been proposed recently.

The upper and lower vibration type actuator vibration motors include upper and lower cases which are opposed to each other, magnetic force generating means formed on at least one surface of the upper case and the lower case, a magnet to which a force or a repulsive force opposing the magnetic force generating means is applied, An elastic means for elastically supporting a heavy object placed on at least one side of at least one of the upper and lower surfaces of the heavy object, And a fixing member for fixing to the case and the lower case.

Such up-and-down vibratory actuator type vibration motors are widely used in recent years because they can extend service life, overcome the limitation of size, and obtain a quick response speed.

On the other hand, the up-and-down vibration type vibration motor can improve the service life of the vibration motor by preventing internal parts from being affected by the vibration body, and as the vibration power of the vibration body is improved, a better vibration motor can be manufactured , There is a continuing need for the development of a vibration motor having improved durability and vibration power.

Korean Patent Publication No. 10-2010-0073301 (2010. 07. 01.)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vibration motor capable of improving vibration power by concentrating a magnetic force and an improved magnetic force.

According to an aspect of the present invention,

In the vibration motor,

And a vertical protrusion 11 formed to be able to engage the F-PCB 20, the yoke 40, the coil 30, and the spring 50 and having a plane center portion protruding upward, A yoke bracket 10 configured to mate with the yoke 90;

An F-PCB 20, one side of which penetrates through the vertical protrusion 11 and is coupled to the plane of the yoke bracket 10 and supplies external power to the coil 30;

The coil 30 is configured to penetrate the vertical protrusion 11 at its center and to be mounted on the plane of the F-PCB 20 and to generate vertical vibration of the vibrating body by the action of the magnet 70. [ and;

A yoke (40) centrally penetrating the vertical protrusion (11) and coupled to a plane of the coil (30) and configured to concentrate the flow of the internal magnetic field of the coil (30);

A spring (50) configured to penetrate the vertical protrusion (11) at its center to be coupled to the plane of the yoke bracket (10) and to provide an elastic force to amplify the vibration in the vertical direction;

The oscillating body is coupled to the upper portion of the spring 50 so that the central portion of the vertical protrusion 11, the coil 30, and the yoke 40 The inner periphery is spaced apart from the outer periphery of the vertical projecting portion 11, the coil 30 and the yoke 40 so as to vibrate in the vertical direction while passing through the magnet 70, A plate (60) configured to bias the plate (60);

The oscillating body is coupled to an upper plane of the plate 60 so that the central portion of the vertical protrusion 11, the coil 30, and the yoke The inner periphery is spaced apart from the outer periphery of the vertical projection 11, the coil 30 and the yoke 40 so as to vibrate in the vertical direction while being penetrated by the coil 30, A magnet (70) configured to generate a vertical vibration by generating a magnetic field;

The vibrating body is coupled to an upper portion of the spring 50 and an outer circumference of the magnet 70 and the plate 60 so that the magnet 70 and the plate 60, A weight (80) configured to be more firmly fixed to the spring (50) and configured to amplify vibration by its own weight;

And a top case 90 connected to the upper portion of the yoke bracket 10 and configured as a cover type opening downward so as to form a housing when engaged with the yoke bracket 10 .

Therefore, the present invention has the effect of enhancing the vibration power of the vibration motor by enhancing the magnetic force and concentrating the improved magnetic force.

Further, the present invention can easily combine components, facilitate manufacturing process control, and minimize the defective coupling ratio of the produced products.

In addition, the present invention has the effect of minimizing the generation of noise due to the occurrence of knitting vibration and knitting vibration at the time of vibration.

1 is an exploded perspective view of a linear type vertical vibration motor having a knife prevention function according to an embodiment of the present invention.
Fig. 2 is an engaging sectional view showing a state in which a ring-shaped yoke 40 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention is engaged.
3 is a perspective view showing a yoke bracket 10 of a linear type vertical vibration motor having a knife vibration prevention function according to an embodiment of the present invention.
4 is an enlarged view of a peripheral portion of a vertical protrusion 11 of a yoke bracket 10 of a linear type vertical vibration motor having a vibration preventing function according to an embodiment of the present invention.
5 is a view showing image data of an electromagnetic field force measurement when the yoke bracket 10 is constructed such that the thickness of the peripheral portion a2 of the vertical protrusion 11 of FIG. 4 is equal to the thickness of the outer portion a1.
6 is a view showing image data of an electromagnetic force measurement when the yoke bracket 10 is configured 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.
7 is an engaging sectional view showing a state in which a lead yoke 40 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention is coupled.
Fig. 8 is a perspective view showing a lead-type yoke 40 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention.
9 is a plan view showing a spring 50 of a linear type vertical vibration motor having a knife vibration preventing function according to an embodiment of the present invention.
10 is a cross-sectional view showing one side of a top case 90 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention.
11 is a perspective view showing a top case 90 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention.
12 is an assembled perspective view showing a state in which the spring case 50 and the top case 90 of the linear type vertical vibration motor having the knitting vibration prevention function according to the embodiment of the present invention are combined.
13 is a side view showing a state where a top case 90, a spring 50, and a yoke bracket 10 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention are combined.
Fig. 14 is an engaging sectional view showing a state in which insulating PET (P) is coupled between a coil 30 and a yoke 40 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention.
15 is a view showing a state in which an insulation coating layer C is formed between the coil 30 and the yoke 40 of the linear type vertical vibration motor having the vibration prevention function according to an embodiment of the present invention and on the surface of the vertical projection 11 Fig.
16 is a sectional view of a linear type up-and-down vibration motor according to an embodiment of the present invention in which a stiffener 100 is coupled between a bottom center of a top case 90 of a linear type vertical vibration motor and a top plane of the vertical projection 11 Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described by way of example only and with reference to the accompanying drawings, in which: FIG. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The embodiments are provided to explain the present invention to a person having ordinary skill in the art to which the present invention belongs. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a linear type vertical vibration motor having a knife prevention function according to an embodiment of the present invention.

Fig. 2 is an engaging sectional view showing a state in which a ring-shaped yoke 40 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention is engaged.

3 is a perspective view showing a yoke bracket 10 of a linear type vertical vibration motor having a knife vibration prevention function according to an embodiment of the present invention.

4 is an enlarged view of a peripheral portion of a vertical protrusion 11 of a yoke bracket 10 of a linear type vertical vibration motor having a vibration preventing function according to an embodiment of the present invention.

5 is a view showing image data of an electromagnetic field force measurement when the yoke bracket 10 is constructed such that the thickness of the peripheral portion a2 of the vertical protrusion 11 of FIG. 4 is equal to the thickness of the outer portion a1.

6 is a view showing image data of an electromagnetic force measurement when the yoke bracket 10 is configured 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.

7 is an engaging sectional view showing a state in which a lead yoke 40 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention is coupled.

Fig. 8 is a perspective view showing a lead-type yoke 40 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention.

9 is a plan view showing a spring 50 of a linear type vertical vibration motor having a knife vibration preventing function according to an embodiment of the present invention.

10 is a cross-sectional view showing one side of a top case 90 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention.

11 is a perspective view showing a top case 90 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention.

12 is an assembled perspective view showing a state in which the spring case 50 and the top case 90 of the linear type vertical vibration motor having the knitting vibration prevention function according to the embodiment of the present invention are combined.

13 is a side view showing a state where a top case 90, a spring 50, and a yoke bracket 10 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention are combined.

Fig. 14 is an engaging sectional view showing a state in which insulating PET (P) is coupled between a coil 30 and a yoke 40 of a linear type vertical vibration motor having a knitting vibration prevention function according to an embodiment of the present invention.

15 is a view showing a state in which an insulation coating layer C is formed between the coil 30 and the yoke 40 of the linear type vertical vibration motor having the vibration prevention function according to an embodiment of the present invention and on the surface of the vertical projection 11 Fig.

16 is a sectional view of a linear type up-and-down vibration motor according to an embodiment of the present invention in which a stiffener 100 is coupled between a bottom center of a top case 90 of a linear type vertical vibration motor and a top plane of the vertical projection 11 Fig.

Referring to Figs. 1 and 2, the present invention provides a vibration motor,

And a vertical protrusion 11 formed to be able to engage the F-PCB 20, the yoke 40, the coil 30, and the spring 50 and having a plane center portion protruding upward, A yoke bracket 10 configured to engage with the yoke 90,

An F-PCB 20, one side of which penetrates through the vertical protrusion 11 and is coupled to the plane of the yoke bracket 10 and supplies external power to the coil 30;

The coil 30 is configured to penetrate the vertical protrusion 11 at its center and to be mounted on the plane of the F-PCB 20 and to generate vertical vibration of the vibrating body by the action of the magnet 70. [ and,

A yoke 40 configured to penetrate the vertical protrusion 11 at the center and to be coupled to the plane of the coil 30 to concentrate the flow of the internal magnetic field of the coil 30,

A spring 50 configured to penetrate the vertical protrusion 11 at its center and to be coupled to the plane of the yoke bracket 10 and to provide elasticity for amplifying the vibration in the vertical direction,

The oscillating body is coupled to the upper portion of the spring 50 so that the central portion of the vertical protrusion 11, the coil 30, and the yoke 40 The inner periphery is spaced apart from the outer periphery of the vertical projecting portion 11, the coil 30 and the yoke 40 so as to vibrate in the vertical direction while passing through the magnet 70, A plate (60) configured to provide a plurality of plates

The oscillating body is coupled to an upper plane of the plate 60 so that the central portion of the vertical protrusion 11, the coil 30, and the yoke The inner periphery is spaced apart from the outer periphery of the vertical projection 11, the coil 30 and the yoke 40 so as to vibrate in the vertical direction while being penetrated by the coil 30, A magnet 70 configured to generate a vertical vibration by generating a magnetic field,

The vibrating body is coupled to an upper portion of the spring 50 and an outer circumference of the magnet 70 and the plate 60 so that the magnet 70 and the plate 60, A weight 80 configured to be more firmly fixed to the spring 50 and configured to amplify vibration by its own weight,

And a top case 90 connected to the upper portion of the yoke bracket 10 and configured to be opened to the lower side to be able to form a housing when engaged with the yoke bracket 10, .

The yoke bracket 10 is configured to be able to engage with the F-PCB 20, the yoke 40, the coil 30, and the spring 50. The yoke bracket 10 includes a vertical protrusion 11, And is configured to be coupled with the top case 90.

The coil 30 and the yoke 40 can be connected to each other around the vertical protrusion 11 so that the coil 30 and the yoke 40 can be easily coupled to the yoke bracket 10, The process control is facilitated and the defective coupling ratio can be minimized.

Referring to FIG. 3, the yoke bracket 10 may further include a plurality of horizontal protrusions 12 protruding toward the outside.

10 to 11, the horizontal projection 12 is fastened to and engaged with the projection catching groove 92 formed in the top case 90, and the horizontal projection 12 is engaged with the projection catching groove 92. In this case, It is preferable to have a contour smaller than the cutting width.

13, the horizontal protrusions 12 and the protrusion engaging grooves 92 are aligned with each other so that the yoke bracket 10 and the top case 90 are pressed in the vertical direction The horizontal projection 12 is inserted into the projection engagement groove 92 so that the yoke bracket 10 can be easily coupled to the top case 90 and the process can be easily managed And the coupling failure rate can be minimized.

4, the yoke bracket 10 may be configured such that the thickness of the peripheral portion a2 of the vertical protrusion 11 is 50% or more and less than 100% of the thickness of the outer portion a1.

5 to 6, FIG. 5 is a sectional view of the yoke bracket 10 when the yoke bracket 10 is constructed such that the thickness of the peripheral portion a2 of the vertical protrusion 11 shown in FIG. 4 is equal to the thickness of the outer portion a1. FIG. 6 is a view showing an image of an electromagnetic force measurement when the yoke bracket 10 is configured such that the thickness of the peripheral portion a2 of the vertical projection 11 in FIG. 4 is half the thickness of the outer portion a1 As shown in FIG. 6, when the field force measurement data of FIGS. 5 and 6 are compared with each other, the measurement value of the field force of FIG. 6 is higher than that of FIG. 5, When the thickness is 50% or more and less than 100% of the thickness of the outer portion a1, it can be confirmed that the force constituting the magnetic field is improved by about 20% as compared with the conventional vertical vibration motor as the force of the electromagnetic field increases.

That is, this is due to the magnetic field saturation phenomenon. As the thickness of the peripheral portion a2 is thinner (less than 50% of the thickness of the outer portion a1), the flowability of the electromagnetic field due to magnetic field saturation deteriorates. 50% or more and less than 100%). This is because the magnetic field saturation phenomenon is eliminated and the flow of the electromagnetic field is improved. By using this, it is possible to control the electromagnetic field force by about 20%.

One end of the F-PCB 20 passes through the vertical protrusion 11 and is coupled to the plane of the yoke bracket 10 and is configured to supply an external power source to the coil 30.

The coil 30 penetrates the vertical protrusion 11 at its center and is coupled to the plane of the F-PCB 20 in a standing manner. The coil 30 generates vertical vibration of the vibrating body by the action of the magnet 70 .

The yoke bracket 10 and the coil 30 can be easily coupled to each other through the vertical protrusion 11 so that the process can be easily performed. It is possible to minimize the effect.

The yoke 40 is configured to penetrate the vertical protrusion 11 at its center and to be coupled to the plane of the coil 30 to concentrate the flow of the internal magnetic field of the coil 30.

The yoke 40 may be formed in a ring shape so that the center of the yoke 40 penetrates the vertical protrusion 11 and can be coupled to the plane of the coil 30. [

Therefore, the yoke 40 can be coupled to the vertical protrusion 11, so that the yoke bracket 10 and the yoke 40 can be easily coupled with each other, the process can be easily managed, It is possible to minimize the effect.

In addition, since the yoke 40 penetrates the outer peripheral edge of the vertical projection 11 and is firmly fitted to the yoke 40, the balance can be prevented from being broken due to the impact of the yoke 40, The balance of the yoke 40 caused by the yoke 40 is prevented from being deformed, the dropping reliability is improved, and thereby the occurrence of the knitting yarn and the noise caused by the knitting yarn are minimized.

7 to 8, the yoke 40 is formed as a lead type opening downward so as to be engageable with an upper plane of the coil 30 and an upper portion of the vertical protrusion 11 .

Therefore, the yoke 40 can be coupled to the upper portion of the vertical protrusion 11, so that the yoke bracket 10 and the yoke 40 can be easily coupled with each other, the process can be easily managed, It is possible to minimize the effect.

The spring 50 is configured to penetrate the vertical protrusion 11 at its center and to be coupled to the plane of the yoke bracket 10 and to provide elasticity for amplifying vibration in the vertical direction.

Referring to FIG. 9, the spring 50 may further include a plurality of outer protrusions 52 protruding outward.

10 to 12, the outer projecting portion 52 is engaged with the projecting portion receiving groove 92 formed in the top case 90, It is preferable to have a contour smaller than the cutting width.

Therefore, as shown in FIG. 13, the outer projecting portion 52 and the projecting portion engaging groove 92 are aligned so that the spring 50 and the top case 90 are pressurized in the vertical direction The spring 50 and the top case 90 can be easily coupled with each other by inserting the outer projecting portion 52 into the projecting portion engaging groove 92 so that the process can be easily managed, It is possible to minimize the defective coupling ratio.

The plate 60 is coupled to an upper portion of the spring 50 as a vibrating body and is vertically vibratable by the elastic action of the spring 50 so that its center is perpendicular to the vertical protrusion 11, 30 and the yoke 40 so that the inner circumference is spaced apart from the outer periphery of the vertical protrusion 11, the coil 30 and the yoke 40, and the magnet 70 Of the magnetic field of the magnetic field.

At this time, the plate 60 may be further coupled to the upper portion of the magnet 70.

Therefore, it has the effect of concentrating the force of the magnetic field, improving the vibration power, and shortening the vibration starting time (Rising Time) and the vibration stopping time (Falling Time).

The magnet 70 is coupled to an upper plane of the plate 60 as a vibrating body and is vertically oscillated by the elastic action of the spring 50 so that its center is perpendicular to the vertical protrusion 11, The inner periphery is spaced apart from the outer periphery of the vertical projection 11, the coil 30 and the yoke 40 so as to vibrate in the vertical direction while passing through the coil 30 and the yoke 40, 30 to generate a magnetic field, thereby generating an up-and-down vibration.

At this time, the magnet 70 is positioned so that the vertical protrusion 11, the coil 30, and the yoke 40, which are positioned apart from each other in the inner direction of the inner periphery, The gap between the outer periphery of the coil 30 and the yoke 40 and the inner periphery of the magnet 70 is minimized.

Accordingly, since the deviation of the gap between the outer periphery of the coil 30 and the inner periphery of the magnet 70 is minimized, the linear motion reliability becomes higher, It is possible to prevent the deformation of the balance of the yoke caused by the drop impact of the sieve, thereby improving dropping reliability, thereby minimizing the occurrence of the knitting and the noise caused by knitting.

The weight 80 is connected to the upper part of the spring 50 and the outer periphery of the magnet 70 and the plate 60 as a vibrating body, 70 and the plate 60 are configured to be more firmly fixed to the spring 50 and are configured to amplify vibration by its own weight.

The top case 90 is configured to be coupled to the upper portion of the yoke bracket 10 so as to be opened to the lower side to form a housing when the yoke bracket 10 is coupled with the top case 90 .

10 to 13, the top case 90 may further include a concave-convex portion 91 formed at the center of the upper portion.

Therefore, it is possible to prevent the center portion of the top case 90 from being easily deformed by the impact.

At this time, the top case 90 may further include a plurality of protrusion engagement grooves 92 formed by cutting a part of the bottom surface so as to form a step on the bottom surface of the lower side wall portion.

10 to 11, the protrusion engagement grooves 92 are engaged with the horizontal protrusions 12 formed on the yoke bracket 10 and the outer protrusions 52 formed on the springs 50, And is configured to have a cutting width equal to or larger than the outer width of the horizontal projecting portion 12 and the outer projecting portion 52. [

13, the positions of the horizontal protrusion 12 and the outer protrusion 52 coincide with the positions of the protrusion engagement grooves 92, and the yoke bracket 10 and the spring 50, The horizontal protrusion 12 and the outer protrusion 52 are inserted into and engaged with the protrusion receiving grooves 92 by pressing the top case 90 upward and downward in a state where the upper case 90 and the upper case 90 overlap each other, The yoke bracket 10, the spring 50, and the top case 90 can be easily coupled, the process can be easily managed, and the defective coupling ratio can be minimized.

16, in order to prevent the top case 90 from being deformed due to an external impact, between the bottom surface center of the top case 90 and the top surface of the vertical protrusion 11, (100) may be further combined.

The stiffener 100 is preferably configured to have a height corresponding to an interval between the bottom surface center of the top case 90 and the top surface of the vertical protrusion 11.

Therefore, by supporting the bottom surface of the top case 90 by receiving the support of the vertical protrusion 11 and filling the gap between the bottom center of the top case 90 and the top plane of the vertical protrusion 11, It is possible to prevent the central portion of the top case 90 from being deformed by the impact.

14, the coil 30 is protected between the coil 30 and the yoke 40 to prevent the coil 30 from being energized with the yoke 40 due to damage to the insulation coating of the coil 30, The insulating PET (P) may be further combined.

15, between the surface of the vertical protrusion 11 and the coil 30 and the yoke 40, the coil 30 is protected, and the insulation of the coil 30 is damaged An insulating coating layer C may be formed so as to prevent conduction with the yoke 40.

A magnetic fluid (not shown) may be applied between the vertical protrusion 11, the coil 30, the yoke 40, the plate 60, and the magnet 70 .

Therefore, when the vibration of the vibrating body (the plate 60, the magnet 70, and the weight 80) is stopped, the vibration force is suppressed by the fluid viscosity, the noise is reduced, And the coil 30 and the yoke 40 and the vibrator 70 by forming an oil film between the coil 30 and the yoke 40 and between the plate 60 and the magnet 70. [ (The plate 60, the magnet 70, and the weight 80).

The upper surface of the magnet 70, the lower surface of the magnet 70, the upper surface of the weight 80, the lower surface of the weight 80, A damper (not shown) may be coupled to at least one of the upper surface and the lower surface of the body.

Therefore, when the vibrator (the plate 60, the magnet 70, and the weight 80) vibrates, the yoke bracket 10, the F-PCB 20, the spring 50, It is possible to prevent direct contact between the vibrating body (plate 60, magnet 70, weight 80) and the vibrating body (plate 60, magnet 70, weight 80), suppress vibration force, and limit the vibration range of the vibrating body.

Therefore, in the present invention, when the electric current is caused to flow in the right direction of the screw by the right-hand rule of the Ampere, the magnetic field is generated in the direction in which the screw advances, so that the current and the magnetic field direction are changed by the AC signal, Magnets, attractive force and repulsive force are generated, causing up and down vibration.

Therefore, the present invention has the effect of improving the vibration power of the vibration motor by improving the magnetic force and concentrating the improved magnetic force.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is not.

10: yoke bracket
20: F-PCB
30: Coil
40: York
50: spring
60: Plate
70: Magnet
80: Weight
90: Top case

Claims (11)

In the vibration motor,
And a vertical protrusion 11 formed to be able to engage the F-PCB 20, the yoke 40, the coil 30, and the spring 50 and having a plane center portion protruding upward, A yoke bracket 10 configured to mate with the yoke 90;
An F-PCB 20, one side of which penetrates through the vertical protrusion 11 and is coupled to the plane of the yoke bracket 10 and supplies external power to the coil 30;
The coil 30 is configured to penetrate the vertical protrusion 11 at its center and to be mounted on the plane of the F-PCB 20 and to generate vertical vibration of the vibrating body by the action of the magnet 70. [ and;
A yoke (40) centrally penetrating the vertical protrusion (11) and coupled to a plane of the coil (30) and configured to concentrate the flow of the internal magnetic field of the coil (30);
A spring (50) configured to penetrate the vertical protrusion (11) at its center and to be coupled to the plane of the yoke bracket (10) and to provide elasticity for amplifying vibration in the vertical direction;
The oscillating body is coupled to the upper portion of the spring 50 so that the central portion of the vertical protrusion 11, the coil 30, and the yoke 40 The inner periphery is spaced apart from the outer periphery of the vertical projecting portion 11, the coil 30 and the yoke 40 so as to vibrate in the vertical direction while passing through the magnet 70, A plate (60) configured to bias the plate (60);
The oscillating body is coupled to an upper plane of the plate 60 so that the central portion of the vertical protrusion 11, the coil 30, and the yoke The inner periphery is spaced apart from the outer periphery of the vertical projection 11, the coil 30 and the yoke 40 so as to vibrate in the vertical direction while being penetrated by the coil 30, A magnet (70) configured to generate a vertical vibration by generating a magnetic field;
The vibrating body is coupled to an upper portion of the spring 50 and an outer circumference of the magnet 70 and the plate 60 so that the magnet 70 and the plate 60, A weight (80) configured to be more firmly fixed to the spring (50) and configured to amplify vibration by its own weight;
And a top case 90 connected to the upper portion of the yoke bracket 10 and configured as a cover type opening downward so as to form a housing when engaged with the yoke bracket 10 Respectively,
The yoke bracket 10 is configured such that the thickness of the peripheral portion a2 of the vertical protrusion 11 is 50% or more and less than 100% of the thickness of the outer portion a1, and a plurality of horizontal protrusions 12, Further comprising:
The horizontal projection 12 is configured to be engaged with and engage with a projection engagement groove 92 formed in the top case 90 and to have a contour smaller than a cutting width of the projection engagement groove 92,
The yoke 40 is formed in a ring shape so that its center is penetrated by the vertical protrusion 11 and can be engaged with the plane of the coil 30 or the upper surface of the coil 30 and the vertical protrusion 11, And is open to the lower side so as to be able to be coupled to the upper portion of the housing,
An insulating PET (P) 30 is provided between the coil 30 and the yoke 40 so as to protect the coil 30 and prevent the coil 30 from being energized with the yoke 40, ) Are further combined,
The spring (50) further includes a plurality of outer projections (52) projecting outwardly,
The outer projecting portion 52 is engaged with the projecting portion engaging groove 92 formed in the top case 90 and is configured to have a contour smaller than the cutting width of the projecting portion engaging groove 92,
The top case 90 further includes a plurality of projecting engagement grooves 92 formed by cutting a part of the bottom surface so as to form a step on the bottom surface of the lower side wall portion Further comprising:
A stiffener 100 is further coupled between the center of the bottom surface of the top case 90 and the top surface of the vertical protrusion 11 to prevent the top case 90 from being deformed by an external impact Wherein the upper and lower vibration motors are arranged in the same direction.
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