KR101151710B1 - Horizontal type synchronous vibration motor - Google Patents

Abstract

PURPOSE: A horizontal type synchronous vibration motor is provided to keep high quality by using an elastic member as a spring and a resonance frequency of an elastic member. CONSTITUTION: A permanent magnet(21) is composed to form a magnet filed corresponding to the electromagnetic force concentrated on an eccentricity yoke. A plate(23) is composed to form magnetic force of the permanent magnet in one axis direction. A heavy body(22) combined with the plate to improve vibration feeling by rotation. A vibration body(20) is assembled by a metal bearing(24) for delivering a vibrating sound of the heavy body to the outside. A cover(30) is composed of a case(32) combined with an upper washer(31).

Description

Horizontal type synchronous vibration motor {HORIZONTAL TYPE SYNCHRONOUS VIBRATION MOTOR}

The present invention relates to a horizontal synchronous vibration motor, which is synchronized with an electric signal of an alternating power frequency inputted externally, and vibrates including a heavy body rotate around the central axis to induce vibrations while vibrating electronic devices such as mobile phones. It relates to a horizontal type synchronous vibration motor designed to occur.

In general, cell phones use a lot of bells or melodies to notify them of an incoming call, but this can cause noise around them, which can cause discomfort to others.

To solve this, vibration motors are designed to notify the incoming state by vibration rather than sound. In these vibration motors, it is common to use a DC motor with a brush attached to it, but this limits the lifespan by using a brush. There are limitations on the use of various vibration modes, and it is difficult to meet the needs of consumers who require a fast response and a long-life vibration motor as the current touch cell phones are popular.

To solve this problem, there are "vertical oscillators" registered as patent 10-0735299 and "linear oscillation motors" registered as 10-0934584, which are linear vibration devices that operate up and down without using a brush.

The linear vibration device made of such a structure is designed such that the coil 150 operates between the permanent magnet 124 and the yoke 122 up and down, and the vibration body 100 is moved downward by an electric signal (+A) to the coil. It will be lowered and will hit the bracket 115. To prevent this, the damper 170 is used on the lower side and the damper 170 is made of a material capable of absorbing shock, but this is caused by the operation of the vibrating body 100. Mechanical shock is inevitable and cannot absorb 100%, so the mechanical impact sound of the vibrating body 100 is transmitted to the damper 170 to generate mechanical noise, which is further amplified by meshing with the resonance frequency of products combined with mobile phones and electronic devices. By amplifying various noise noises, vibration joints can be generated, causing discomfort to consumers, and causing defects due to vibration joints in production lines.

Conversely, the vibrating body 100 is raised in the upward direction by the electrical signal (-A) and will collide with the case 110 or the elastic member 130.

In order to prevent this, the magnetic fluid 160, which can be a magnetic material by magnetic force, is prevented from contacting, but this also changes the impact of the vibrating body 100 by the amount of the magnetic fluid 160 and overcomes it. When the amount of the magnetic fluid 100 is increased, the up and down motion of the vibrating body 100 is constrained, resulting in a shortening of the amount of vibration, which makes it difficult to manage the proper amount and manages the appropriate amount. It can be a cause of progressive noise and deterioration because it is not possible to maintain an appropriate amount for initial characteristics by using it while carrying it with variable environment and location.

In addition, the linear vibration motor of this type uses the resonant frequency of the elastic member 130 serving as a spring for the vibrating body 100 operating up and down to maximize the amount of vibration and use the elastic member 130 as a medium for external transmission. ) Is highly dependent on the resonant frequency, and the resonant frequency is sensitively operated according to the thickness width of the elastic member 130, the state of the material, and the bonding strength with the fixture, and thus it is difficult to secure uniformity of vibration quality.

In addition, it is desperate to increase the amount of vibration by securing the amount of vibration by operating up and down, or to secure sufficient amount of vibration, but the distance for moving up and down is limited in electronic devices such as mobile phones that require thin film thinning, so vibration for sufficient vibration is required. It is not easy to secure the moving distance of the sieve.

In addition, “Horizontal vibration type linear type vibration motor”, which is a registered patent 10-0720197, which vibrates in the horizontal direction, proposed for the purpose of slimming thin films according to the vertical movement distance, and “integrated magnet and it, which is provided with public patent 10-2011-0008533 Linear Vibrating Motor”, but this structure is composed of the coil 230 and the permanent magnet 240 is positioned at the center thereof, and the yoke 250 is wrapped around the coil 200 by alternating external electrical signals. The electromagnetic force is generated and the coil 230 positioned between the permanent magnet 240 and the yoke 250 operates horizontally to the left and right by Fleming's left-hand rule.

At this time, the weight 260 is coupled to the yoke 250 operating horizontally and transmitted to the outside by the elastic member 280 serving as a spring disposed in the left and right vibration vibrations of the horizontal vibration generated here. Although it is possible to maintain a larger moving distance than the conventional vertical vibrating method, it is not easy to secure a horizontal moving distance that is a repetitive oscillation amplitude of a vibrating body for a sufficient amount of vibration in an electronic device such as a mobile phone that requires thin film thinning. .

In addition, in this type of linear vibration motor, an elastic member 280 serving as a spring is located on the left and right sides in order to operate from side to side in the horizontal direction, and the amount of vibration is maximized and transmitted externally by using the resonance frequency of the elastic member 280. By using it as a medium, the dependence of the resonant frequency of the elastic member 280 is high, and the resonant frequency of the elastic member 280 is sensitive depending on the thickness width of the elastic member 280 and the state of the material and the bonding strength with the base 210. It is difficult to secure vibration quality uniformity because it is operated properly.

Accordingly, the present invention relates to a vibration device designed to solve this problem, and does not use a damper and a magnetic fluid that are in mechanical contact, and does not use an elastic member that acts as a spring for up and down or left and right vibrations, and is input to the outside. It relates to a horizontal type synchronous vibration motor designed to generate vibration in electronic devices such as mobile phones while inducing vibration by rotating horizontally around a central axis according to an electrical signal of an alternating power frequency.

Accordingly, the present invention has an object to semi-permanently preserve the life by removing the brush and commutator according to the conventional vibration motor as described above.

In addition, the present invention is to provide a vibration motor of a type that horizontally rotates and vibrates around a central axis without using a damper and a magnetic fluid that absorb a shock joint caused by mechanical stop during vertical movement.

In addition, the present invention relates to the resonance frequency of the elastic member in a manner that maximizes the amount of vibration by using the resonant frequency of the elastic member in a manner to transmit to the outside through the spring which is the elastic member in order to operate horizontally and vertically and horizontally. The dependence is high and the natural resonant frequency of the elastic member is sensitively operated depending on the thickness width of the elastic member, the state of the material, and the bonding strength with other fixtures. It is to provide a vibration motor of a type that rotates horizontally around a central axis in synchronization with an electric signal of an alternating power frequency input externally horizontally around an axis.

In addition, the present invention causes vibration by placing the vibrating body around the central axis on the outermost part and rotating it horizontally so as to overcome the limitations on the moving distance between the up and down motion and the left and right repetitive motion. The present invention is to provide a horizontal type synchronous vibration motor structure having a structure suitable for a thin film slim type by greatly improving a moving distance.

Accordingly, in the present invention, as the invention was invented to solve the above problems, a shaft having a central rotation axis, a bracket having an extension piece protruding from a uniaxial edge coupled with the shaft, and being coupled to the bracket to externally The PCB for transmitting electrical signals, the coil that generates electromagnetic force while being coupled to the upper side of the PCB, and the eccentric yoke that is coupled to the center of the coil and eccentrically concentrates the electromagnetic force, and helps to smoothly rotate the coupling interval. A combined washer and a stator assembled and coupled to a central rotating shaft for adjustment, a divided magnetized permanent magnet configured to form a magnetic field corresponding to the electromagnetic force concentrated on the eccentric yoke, and a plate configured to concentrate the magnetic force of the permanent magnet in a uniaxial direction, Combined with a metal bearing to combine with the plate to increase the sensational vibration according to the rotational motion, and to combine with the weight, and to easily rotate around the central axis while transmitting the vibration of the weight to the outside. After combining the vibrating body, the stator and the vibrating body, it is characterized in that it is finally combined with a cover made of an empty case in which the inside, which is combined with the upper washer to facilitate rotation by contacting with the metal bearing of the vibrating body;

It is possible to achieve a purpose that can maintain superior quality continuously while prolonging the lifespan, while increasing the product applicability by slimming the vibration motor, while increasing the product applicability.

The horizontal synchronous vibration motor according to the present invention has an advantage of permanently preserving the life of the vibration motor by not using a brush and a commutator applied to the existing vibration motor.

Do not use magnetic fluids that are used to overcome residual vibrations due to dampers and residual shocks that are in mechanical contact, and elastic members and elastics that act as springs to transmit the up and down vibrations of the vibrating body and the left and right vibrations in the horizontal direction to the outside As the resonant frequency of the member is used, high quality uniformity can be secured by not using a highly dependable elastic member.

Higher vibration force is secured by placing a weight on the outermost part of the vibrating body and limiting the moving distance according to the up and down repetitive vibration amplitude and the horizontal left and right repetitive vibration amplitude of the existing linear vibration motor. It has various effects such as being able to provide an overall thin-film slimming because it has a characteristic margin for slimming the thickness.

1 is an exploded perspective view showing a coin-type vibration motor to which the prior art is applied.
Figure 2 is a cross-sectional view showing a linear vibration device to which the prior art is applied.
Figure 3 is a cross-sectional view showing a vibration motor of the horizontal vibration method to which the prior art is applied.
4 is an exploded perspective view showing a horizontal type synchronous vibration motor to which the technology of the present invention is applied.
Figure 5 (a,b) is a diagram showing the magnetic circuit and operation of the horizontal type synchronous vibration motor to which the technology of the present invention is applied.
Figure 6 is a perspective view showing the excerpt of the yoke of the horizontal type synchronous vibration motor technology is applied to the present invention.
Figure 7 is a perspective view showing the excerpt of the bracket of the horizontal type synchronous vibration motor to which the technology of the present invention is applied.
8 is a perspective view showing a plate of a horizontal type synchronous vibration motor to which the technology of the present invention is applied.
Figure 9 is a perspective view showing the excerpt of the weight of the horizontal type synchronous vibration motor to which the technology of the present invention is applied.
10 is a perspective view of a broken state showing a horizontal type synchronous vibration motor to which the technology of the present invention is applied.

Hereinafter, a preferred configuration and operation of the present invention for achieving the above object in connection with the accompanying drawings will be described.

4 is an exploded perspective view showing a horizontal type synchronous vibration motor to which the technology of the present invention is applied, and FIG. 5 (a,b) shows a magnetic circuit and operation description of a horizontal type synchronous vibration motor to which the technology of the present invention is applied. Figure, Figure 6 is a perspective view showing the yoke of the horizontal type synchronous vibration motor to which the technology is applied to the present invention, Figure 7 is a perspective view showing the excerpt of the bracket of the horizontal type synchronous vibration motor to which the technology of the present invention is applied, 8 is a perspective view showing a plate of a horizontal type synchronous vibration motor to which the technology of the present invention is applied, and FIG. 9 is a perspective view showing a weight body of a horizontal type synchronous vibration motor to which the technology of the present invention is applied. 10 is a perspective view of a broken state showing a horizontal type synchronous vibration motor to which the technology of the present invention is applied.

The horizontal type synchronous vibration motor to which the technology of the present invention is applied includes a shaft forming a central axis of rotation, a bracket having an extension piece protruding from a uniaxial edge coupled with the shaft, and external electric power while being engaged with the bracket. A PCB for transmitting a signal, a coil that generates electromagnetic force while being coupled to the upper side of the PCB, an eccentric yoke that is coupled and eccentrically concentrated at the center of the coil, and helps to rotate smoothly and adjusts the coupling interval In order to do so, the assembled washer and the stator assembled and coupled to the central rotating shaft, the divided magnetized permanent magnet configured to form a magnetic field corresponding to the electromagnetic force concentrated on the eccentric yoke, and the plate configured to concentrate the magnetic force of the permanent magnet in the uniaxial direction, and Combined with a plate, a weight body capable of increasing the sensational vibration according to the rotational motion, and after being coupled to the weight body, it is easy to rotate about the central axis and is assembled and assembled with metal bearings to transmit the vibration sound of the weight body to the outside. After combining the sieve, the stator and the vibrating body, it is characterized in that it is finally combined with a cover made of an empty case, which is coupled with an upper washer to facilitate rotation by contacting with the metal bearing of the vibrating body.

In the horizontal type synchronous vibration motor to which the technology of the present invention is applied, an eccentric yoke for concentrating the electromagnetic force generated by the coil is formed on the upper side and the lower side having different heights on one side, thereby concentrating the electromagnetic force eccentrically in the uniaxial direction. Another feature is to have a horn pole for fixing while engaging.

The horizontal type synchronous vibration motor to which the technology of the present invention is applied is composed of an eccentric yoke and a bracket made of a soft magnetic material having excellent electromagnetic force characteristics to freely change the direction of electromagnetic force by alternating power generated from the coil. It is characterized by.

In the horizontal type synchronous vibration motor to which the technology of the present invention is applied, the bracket has a protrusion hole in the center to facilitate engagement with a shaft that is a central axis of left and right rotation, and 60 for fixing an eccentric yoke concentrated with electromagnetic force by a coil Another feature is to have a fixed hole spaced at ~180 degrees.

In the horizontal type synchronous vibration motor to which the technology of the present invention is applied, the permanent magnet is an eccentric yoke concentrated with electromagnetic force and an attractive force and repulsive force to facilitate the rotation of the vibrating body so that the magnetic field direction is up and down while being two-pole or four. Another feature is that the magnetization is divided horizontally into poles.

The horizontal type synchronous vibration motor to which the technology of the present invention is applied, the plate has a coupling protrusion hole in the center to facilitate engagement with a metal bearing coupled to rotate around a central axis, and it is easy to combine with a weight on the outside of the plate Another feature is that the magnetic force of the permanent magnet is concentrated in one direction with the insertion hole.

The horizontal type synchronous vibration motor to which the technology of the present invention is applied is composed of the heavy body having a heavier weight than iron and is made of a semi-circular donut shape and has a fixed protrusion hole in an upper portion to facilitate coupling with a plate. Another feature is to increase the sensational vibration.

Looking at the specific configuration of the horizontal synchronous vibration motor according to the present invention, the shaft 12 forming the central axis of rotation is coupled with the bracket 11 having an extension piece protruding from the uniaxial edge, and receives external electrical signals. After the PCB 13 for transmission is combined and the coil 14 that generates electromagnetic force is coupled to the upper surface thereof, and after the eccentric yoke 15 is coupled to the center of the coil 14, to help smooth rotation and to adjust the coupling interval The stator 10 is formed by coupling the coupling washer 16 to the central axis of rotation.

In addition, the permanent magnet 21 configured to form a corresponding magnetic field in the eccentric yoke 15 in which the electromagnetic force formed by the coil 14 is concentrated and the plate 23 configured to concentrate the magnetic force of the permanent magnet 21 in a uniaxial direction After being coupled to the weight 22 designed to increase the sensational vibration according to the rotational motion, the metal bearing 24 is coupled to transmit the vibration sound of the weight 22 to the outside while being easily rotated around the central axis. To form the vibrating body 20.

In addition, after the stator 10 and the vibrating body 20 are combined, the inside of the case 32, which is combined with the upper washer 31 to facilitate rotation by contacting with the metal bearing 24 of the vibrating body 20, 32 ) Is finally combined with the cover 30 made of) to complete the rotation of the vibration motor rotating in synchronization with the power frequency horizontally around the central rotation axis.

As illustrated in FIG. 5, when the horizontal synchronous vibration motor according to the present invention having the above-described structure is described centering on the permanent magnet 21 with concentrated magnetic force and yoke 15 with concentrated electromagnetic force, the yoke with concentrated electromagnetic force When an alternating voltage is applied to (15), the electromagnetic force generated on the coil 14 is concentrated on the eccentric yoke 15 to form the polarity of the electromagnetic force as shown in FIG. 5(a) 1 and eccentrically rotates the electromagnetic force to rotate in a uniaxial direction. The vibration body 20 formed of the permanent magnet 21 stopped at a stable position as shown in FIG. 5 (a) 2 by forming the upper side 15a and the lower side 15b to induce the eccentricity of the electromagnetic force in order to make It is rotated in the CCW direction by attraction and repulsive force with the concentrated eccentric yoke 15 and is stopped at a stable position as shown in FIG. 5 (a) 3.

In addition, when the direction of the alternating voltage applied to the coil 14 is applied in reverse, the direction of the electromagnetic force is changed, and thus the generated electromagnetic force is concentrated on the eccentric yoke 15, and the electromagnetic force of the electromagnetic force as shown in FIG. 5(b) 4 To form the polarity and to make the electromagnetic force eccentric to rotate in the uniaxial direction, it is formed on the upper side (15a) and the lower side (15b), and the electromagnetic force induces eccentricity. The vibrating body 20 formed of (21) is rotated in the CCW direction by the attraction force and the repulsive force with the eccentric yoke 15 concentrated with electromagnetic force, and is stopped at a stable position as shown in FIG. 5(b) 6.

Accordingly, the vibrating body 20 including the permanent magnet 21 is synchronized by the attraction force and repulsive force with the eccentric yoke 15 in which the eccentric force of the electromagnetic force is formed in the uniaxial direction in which the electromagnetic force generated by the alternating power frequency inputted from the outside is concentrated. It is rotated horizontally around the central axis. During the initial short period of time, it is not synchronized with the applied power frequency, and it operates in left and right directions. After a certain period of time, it is synchronized with the power frequency and rotates in the horizontal direction around the central axis. .

In addition, the permanent magnet 21 for generating a magnetic field is a yoke with concentrated electromagnetic force, and the attraction force and repulsive force work so that the vibrating body 20 formed of the permanent magnet 21 can rotate, while the magnetic field direction is up and down. It is preferable that the magnetization is divided into two or four poles in the horizontal direction.

As shown in Figure 6, a diagram showing the outer shape of the eccentric yoke according to the present invention, the upper side (15a) and the lower side (15b) having different heights so that the eccentricity of the electromagnetic force generated in the uniaxial direction by the electromagnetic force generated by the coil It is preferable to form and the material of the eccentric yoke is preferably composed of a soft magnetic material having a high magnetic permeability to effectively concentrate the electromagnetic force generated by the coil.

As shown in FIG. 7, the bracket according to the present invention has a protrusion hole 11a in the center to facilitate engagement with a shaft 25 which is a central axis of left and right rotation, and to fix a yoke in which electromagnetic force by the coil is concentrated It is preferable to have a fixing hole (11b) spaced 60 ~ 180 degrees.

As shown in Figure 8, the center of the plate 23 that concentrates the magnetic force of the permanent magnet in one axis direction is provided with a coupling protrusion hole 23a in the center to facilitate coupling with a metal bearing coupled to rotate around the central axis. It is preferable and it is preferable to have an insertion hole 23b to facilitate coupling with a vibrator on the outer side of the plate that concentrates the magnetic force of the permanent magnet in one direction.

As shown in FIG. 9, the weight 22 designed to increase the sensational vibration is formed in a semicircle shape and maximizes eccentric vibration while having a coupling protrusion 22a at an upper portion to facilitate coupling with the plate 23 It is preferable, and the weight 22 designed to increase the sensation vibration usually has a mass heavier than iron.

As described above, the horizontal synchronous vibration motor according to the present invention can permanently preserve the life of the vibration motor by not using the brush 105 and the commutator 111, and the vertical motion which is a problem of the proposed method in the same way The damper 170 for preventing touch noise between the vibrating body 80,100 and the case 81,110 and the brackets 88 and 115 and the magnetic fluid 160 for improving the residual vibration due to residual shock are not used. do.

High quality uniformity and existing quality by using an elastic member that acts as a spring for transmitting the up and down vibration of the vibrating body and the left and right vibration sounds in the horizontal direction and an elastic member with high dependence by using the resonant frequency of the elastic member In order to overcome the limitations on the moving distance due to vertical movement and horizontal movement of the linear vibration motor, a large body is placed on the outermost part of the vibrating body to secure a large rotational moving distance. It is to provide an overall thin film thinning due to a margin of characteristics.

In addition, although shown and described in connection with embodiments of the drawings, it is common in the art that the present invention can be variously modified and changed within the limits that do not depart from the spirit or field of the present invention provided by the following claims. I want to make it clear that those who have the knowledge of can easily know.

10; Stator 11; Bracket 11a: projection hole
11b; Fixing hole 12; Shaft 13; PCB
14; Coil 15; Eccentric yoke 15a; Upper side
15b; Lower side 15c; Horn 16; Combine washers
20; Vibrating body 21; Permanent magnet 21a; N1 pole
21b; S1 pole 21c; N2 pole 22d; S2 pole
22; Weight 22a; Combining projections 23; plate
23a; Engaging projection hole 23b; Insertion hole 24; Metal bearing
30; Cover 31; Upper washer 32; case
81,110; Case 82,124; Permanent magnet 83,126; plate
84,122; York 85,142; Vibrator 86,130; Elastic member
87,150; Coil 88,115; Bracket 160; Magnetic fluid
170; Damper 111; Commutator 105; brush
211; Bracket 230; Coil 240; Permanent magnet
250; York 260; Weight 270; cover

Claims (8)

A shaft 12 forming a central rotation axis;
A bracket 11 having an extension piece protruding from a uniaxial edge coupled with the shaft 12;
PCB 13 for transmitting an external electrical signal while being combined with the bracket 11;
A coil 14 coupled to an upper side of the PCB 13 and generating electromagnetic force;
An eccentric yoke 15 coupled to the center of the coil 14 and eccentrically concentrating electromagnetic force;
A coupling washer 16 coupled to the central rotation shaft and a stator 10 assembled and assembled to adjust the coupling interval while helping smooth rotation;
A divided magnetized permanent magnet 21 configured to form a magnetic field corresponding to the electromagnetic force concentrated on the eccentric yoke 15;
A plate 23 configured to concentrate the magnetic force of the permanent magnet 21 in a uniaxial direction;
A weight body 22 combined with the plate 23 to increase the sensational vibration according to the rotational motion;
A vibrating body 20 assembled with the metal bearing 24 to transmit the vibrating sound of the weighted body to the outside while being easily rotated around the central axis after being coupled to the weighted body 22;
After the stator 10 and the vibrating body 20 are combined, the inside of the case 32, which is combined with the upper washer 31 that facilitates rotation by making contact with the metal bearing 24 of the vibrating body 20, is emptied. Horizontal type synchronous vibration motor, characterized in that it is finally combined with the configured cover (30). According to claim 1;
The eccentric yoke 15 for concentrating the electromagnetic force generated by the coil 14 is formed by forming the upper side 15a and the lower side 15b having different heights on one side, and concentrating electromagnetic force in an uniaxial direction. Horizontal type synchronous vibration motor, characterized in that it has a horn (15c) for fixing. According to claim 2;
The eccentric yoke 15 is a horizontal type synchronous vibration motor, characterized in that it consists of a soft magnetic material having a high magnetic permeability, which is a material having excellent electromagnetic force characteristics, in order to freely change the direction of electromagnetic force by alternating power generated from the coil 14. According to claim 1;
The bracket 11 has a projection hole 11a in the center to facilitate engagement with the shaft 12, which is a central axis of left and right rotation, and 60 to 180 degrees to fix the eccentric yoke 15 in which electromagnetic force by the coil is concentrated. Horizontal type synchronous vibration motor, characterized by having a fixed hole (11b) of the interval. The method of claim 1;
The permanent magnet 21 is an eccentric yoke 15 with concentrated electromagnetic force, and the attraction force and repulsion force are easily operated, so that the magnetic field direction is in the up-down direction and in the horizontal direction with 2 or 4 poles to make the vibrating body 20 rotatable. Horizontal type synchronous vibration motor, characterized in that the magnetization is divided. According to claim 1;
The plate 23 is provided with a coupling protrusion hole 23a in the center to facilitate engagement with the metal bearing 24 coupled to rotate around the central axis, and it is easy to engage with the weight 22 on the outer side of the plate 23 Horizontal type synchronous vibration motor, characterized in that to concentrate the magnetic force of the permanent magnet 21 in one direction with the insertion hole (23b). According to claim 1;
The weight 22 is made of a semi-circular donut shape and has a coupling protrusion 22a at an upper portion to facilitate engagement with the plate 23. motor. The method of claim 7;
The weight 22 is a horizontal type synchronous vibration motor, characterized in that it has a heavier mass than iron.

Images