KR101198978B1

KR101198978B1 - Horizontal type linear shock motor for cellular phone

Info

Publication number: KR101198978B1
Application number: KR1020100087168A
Authority: KR
Inventors: 유정훈
Original assignee: 인창전자주식회사
Priority date: 2010-09-06
Filing date: 2010-09-06
Publication date: 2012-11-07
Also published as: KR20120024316A

Abstract

The horizontal linear vibration motor for a communication terminal of the present invention includes a lower case and an upper case which form a space therein by mutual coupling, a coil part installed on an upper surface of the lower case and supplied with power from the outside, and the nose It is provided with a magnet spaced apart adjacent to the upper surface of the part, the vibrating portion vibrating horizontally by the interaction with the coil portion, the vibrating portion is coupled therein, and is reciprocated horizontally by the vibration of the vibrating portion A housing and an elastic member installed on both sides of the housing and an inner wall surface of the upper case, the elastic members configured to reciprocate horizontally in a state in which an elastic force is applied when the vibrating unit vibrates, The elastic member is a pair of leaf spring, one end of the leaf spring is integrally formed on the side of the housing .

Description

Horizontal type linear shock motor for communication terminal {Horizontal type linear shock motor for cellular phone}

The present invention relates to a vibration motor for a communication terminal, and in particular, when a power supply is applied, the vibration part reciprocates in the horizontal direction to generate a vibration, and the elastic member for elastically supporting the horizontal direction of the vibration part is repeatedly repulsive force. The present invention relates to a horizontal linear vibration motor for a communication terminal that can be easily damaged even in operation, thereby improving the operation performance and extending the service life of the device.

In general, ring tone or vibration is used to make a call from a communication device. In this case, in order to use vibration, a small vibration motor is driven so that the driving force is transmitted to the case of the device so that the whole device can vibrate.

To this end, a vibration motor, which is one of the receiving means that is applied to a communication device such as a communication terminal (mobile phone, etc.) is a component that converts electrical energy into mechanical vibration using the principle of generating electromagnetic force.

However, the mobile phone market is expanding rapidly, and with the demand for new functions, the adoption of touch screens for the use of multimedia is rapidly increasing. As the vibration is required, the necessity for the development of a new structure with a faster response and a higher vibration force than existing products is emerging.

Recently, the necessity for a vibration generating device for generating a variety of vibration for the implementation of the multi-function, multimedia functions of the communication terminal is increasing, the vibration motor applied to the communication terminal, etc. according to the shape of the coin type (coin type) ) And a long bar type.

The coin type vibration motor 1 shown in FIG. 1 includes a cylindrical body 2 divided into a lower case and an upper case to form a space part, and a stator assembly 3 installed in the space part of the body 2. ) And rotor (4).

In addition, the stator 3 has a lower substrate 6 bonded to an upper surface of a bracket 5 which is a circular flat plate, and an annular magnet having a concentric circle on the outer side of the lower substrate 6. 7) and the like.

In addition, the bar type vibration motor 10 shown in FIG. 2 includes a cylindrical body 20 forming a space portion, a stator 30 and a rotor 40 installed in the space portion of the body 20. .

In addition, the stator 30 includes a fixed cap 50 and a magnet 60 fixed to one side of the main body 20, and the rotor 40 has an eccentric weight 41 and a fixed body 42. It includes a plurality of commutator is divided and fixed to one surface of the plurality of coils 60 and the like fixed to the fixture.

Coin-type or bar-type vibration motors described above use a method of obtaining mechanical vibration by rotating a rotating part having an unbalanced mass, although there are some differences in shape. Through the structure to supply the current to the rotor coil through.

However, the coin type vibration motor of the related art has a cylindrical shape and its application range is limited, and the bar type vibration motor has a difficulty in forming a constant space since the rotor is rotated.

In another form, a linear vibration motor, in which a vibrator vibrates horizontally through interaction of a coil and a magnet, to which power is supplied, so as to be thinned and installed in a communication terminal, has been proposed.

However, the conventional horizontal linear vibration motor has a repulsive action structure in which the vibrating part is supported by the elastic member in both directions, but the elastic member has cracks and cracks at the coupling portion between the vibrator and the elastic member by repeated repulsive force and moment action. It may cause breakage and shorten the life of the product.

Therefore, the present invention is to solve the problems of the prior art as described above, by applying a structure in which the vibrating portion vibrates horizontally by the interaction of the coil and the magnet is supplied with power, and elastically supporting both sides of the vibrating portion By constructing the spring so that it is not easily broken by the repeated reaction force, it is possible to improve the vibration performance of the device and to prevent the shortening of the life of the spring due to the repeated reaction force. It is about.

Horizontal linear vibration motor for a communication terminal of the present invention for achieving the above object, the lower case and the upper case to form a space therein by mutual coupling, and installed on the upper surface of the lower case, the nose is supplied power from the outside And a magnet which is spaced apart from and adjacent to an upper surface of the coil part, the vibration part vibrating horizontally by the interaction with the coil part, and the vibration part being coupled therein, by the vibration of the vibration part. A housing which is reciprocated horizontally, and is installed in contact with both ends of both sides of the housing and an inner wall surface of the upper case, and is elastic to allow the housing to reciprocate horizontally in a state in which an elastic force is applied when the vibrating part vibrates A member, wherein said elastic member is a pair of leaf springs, one end of said leaf spring being a side of said housing It is characterized in that formed integrally with.

The coil unit is installed on the upper surface of the lower case, the terminal unit is exposed to the outside of the upper case and the lower case so that power can be supplied from the outside, and is installed on the upper surface of the terminal portion, the winding is supplied to a plurality Preferably, a coil is provided which interacts with the magnet by a power source.

The vibrator may further include a yoke coupled to surround the top surface of the magnet, and a weight coupled to the top surface of the yoke to provide a predetermined weight for vibration.

The magnet, the first magnet and the second magnet is provided on both sides with respect to the center, respectively, the first magnet and the second magnet, it is preferable that the S pole and the N pole are respectively disposed so as to be opposite to each other. Do.

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On the other hand, the pair of leaf springs, both ends are male bent in the same direction, the leaf spring is bent one end is integrally connected to the side of the housing, the other end can support the inner wall surface of the upper case have. In addition, the leaf spring may be formed by further cutting a portion of the center to form a penetrating portion.

On the other hand, the pair of leaf springs are horizontally divided so that a part is connected, and formed as a leaf spring divided into upper and lower support portions by forming the divided portions to be open to both sides, the upper support and the lower support May respectively support the side surface of the housing and the inner wall surface of the upper case, respectively.

The pair of leaf springs may be supported in a state in which one of the leaf springs is eccentrically positioned on one side of the housing, and in a state in which the other of the leaf springs is eccentrically positioned in an opposite direction, thereby supporting both sides of the housing in a staggered manner. Can be.

At least one ball bearing may be further provided on an upper surface of the lower case to slide support the lower surface of the housing or the vibrator.

Here, the ball bearing may slide support the housing in the same or adjacent position with the elastic member.

As described above, the present invention applies a structure in which the vibrating unit can vibrate horizontally by the interaction of the coil and the magnet to which the power is supplied, so that fine vibration can be generated and the structure is not rotated. There is an advantage of easy installation space.

In addition, since the spring elastically supporting the vibration unit does not easily crack or break even when the repulsive force is repeatedly applied, there is an advantage that the life of the spring can be prevented from being shortened.

In addition, by placing the magnet more efficiently by increasing the magnetic force, there is an advantage that can obtain a very large vibration compared to the size.

1 is an exploded perspective view for showing a conventional coin-type vibration motor.
2 is a cross-sectional view illustrating a conventional bar type vibration motor.
3 is an exploded perspective view for showing a horizontal linear vibration motor for a communication terminal of the present invention,
Figure 4 is a combined perspective view for showing a horizontal linear vibration motor for a communication terminal of the present invention.
Figure 5 is a side cross-sectional view for showing a horizontal linear vibration motor for a communication terminal of the present invention.
Figure 6 is an exploded perspective view showing the application of a leaf spring bent in the same direction at both ends in a horizontal linear vibration motor for a communication terminal of the present invention.
7 is an exploded perspective view showing that both ends of the horizontal linear vibration motor for a communication terminal according to the present invention are bent in the same direction, and a plate spring having a through portion is applied thereto.
8 is a view showing the application of a horizontal split plate spring is formed in each of the support portion is divided up and down in the horizontal linear vibration motor for a communication terminal according to the present invention.

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

In describing the present invention, the defined terms are defined in consideration of the function of the present invention, and should not be understood in a limiting sense of the technical elements of the present invention.

As shown in Figure 3 to 5, the horizontal linear vibration motor 100 for a communication terminal of the present invention, the lower case 200 and the upper case 300 to form a space therein by mutual coupling, and the lower It is provided on the upper surface of the case 200, the coil unit 400 is supplied with power from the outside, and the magnet 510 is provided adjacent to the upper surface of the coil unit 400 is provided, the coil unit 400 Vibration unit 500 vibrating horizontally by mutual magnetic interaction with), the vibration unit 500 is coupled to the inside, the housing 600 is horizontally reciprocated by the vibration of the vibration unit 500 and The both ends of the housing 600 and the inner wall surface of the upper case 300 are installed so that both ends contact each other, and the housing 600 is horizontal when the vibration part 500 vibrates while the elastic force is applied. It includes an elastic member 700 to be reciprocated to.

The coil unit 400 is installed on the upper surface of the lower case 200, the terminal portion 410 is exposed to the outside of the upper case 300 and the lower case 200 so that power can be supplied from the outside. And, it is provided on the upper surface of the terminal portion 410, the coil 420 is provided with a plurality of windings to interact with the magnet 510 by the power supply.

One end of the terminal portion 410 has a wider surface and is horizontally attached to the upper surface center portion of the lower case 200, and the other end where the contact 411 is formed has a narrower width than the one end attached to the lower case 200. While extending outward.

Here, the contact 411 is preferably formed on both sides to be electrically connected to the coil 420, the fixing method of the terminal portion 410 is fixed to the upper surface of the lower case using a separate fastening member (not shown) Or by using an adhesive (not shown).

The vibrator 500 vibrates horizontally by mutual magnetic interaction with the coil 420 to which power is supplied, and the vibrator 500 is coupled to the permanent magnet yoke in a state of covering the top surface of the magnet 510. (YOKE, 520), and coupled to surround the upper surface of the yoke 520, and further includes a weight (Weight, 530) for providing a predetermined weight required for vibration.

The yoke 520, the magnet 510 is located at the bottom, the weight 530 is a constant coupling groove 531 is formed at the bottom so that the yoke 520 can be coupled to the bottom. That is, the vibrator 500 is configured by an integrated combination of the magnet 510, the yoke 520, and the weight 530. Of course, the lower portion of the yoke may further form a separate groove to which the magnet can be coupled.

Here, the magnet 510 is provided with a first magnet 511 and a second magnet 512 on both sides with respect to the center, respectively, the first magnet 511 and the second magnet 512 are opposite to each other The S pole and the N pole may be disposed above and below each other.

The elastic member 700 is provided on both sides of the housing 600 to allow the vibrator 500 to vibrate horizontally by the repulsive force, and may be provided in the form of a coil spring. Here, both ends of the coil spring may support the side surface of the housing 600 and the inner wall surface of the upper case 300, respectively.

The first catching protrusion 310 protrudes from both sides of the housing 600 so that one end of the coil spring may be caught to be easily installed, and the coil is formed on the inner wall of the upper case 300. The second locking protrusion 610 may protrude so that the other end of the spring may be locked. Accordingly, the elastic force can be constantly transmitted to both sides of the housing 600 without changing the position of the coil spring.

Alternatively, the pair of elastic members 700 may be provided with a leaf spring that both ends are male bent in the same direction. Here, the leaf spring may be bent one end is integrally connected to the side of the housing 600, the other end may support the inner wall surface of the upper case 300.

Meanwhile, as shown in FIG. 7, the pair of elastic members 700 may be provided with leaf springs both ends of which are male bent in the same direction, and a portion of the leaf spring may be partially cut to cut through parts 710. It can also form more. Both ends bent with respect to the center respectively support the side surface of the housing 600 and the inner surface of the upper case 300, respectively, the one end may be integrally formed on the side of the housing 600.

On the other hand, as shown in Figure 8 the pair of elastic member 700 is horizontally divided so that a portion is connected, the divided portion is formed to be open to both sides (horizontal direction) and the upper support portion 720 is opened to one side, It may be in the form of a leaf spring divided by the lower support portion 730 is opened to the other side of the upper support portion 720.

Here, the upper support portion 720 and the lower support portion 730 respectively support the side wall of the housing 600 and the inner wall surface of the upper case 300, respectively, the upper support portion 720 or lower support portion 730 It may be integrally connected to the side of the housing 600. Here, the method of connecting the support parts 720 and 730 is preferably used by welding, but may be attached using a separate adhesive or the like.

In the case of the elastic member 700 having a leaf spring form as described above, one is supported in an eccentric position on one side of the housing 600, the other is supported in an eccentric position in the opposite direction Thus, both sides of the housing 600 may be staggered from each other. That is, the pair of elastic members 700 are disposed to form a diagonal line with respect to the housing 600.

In addition, the leaf spring can minimize the stress during vibration by forming the length of both ends as long as possible utilizing the maximum installation space. In addition, the coil spring or the leaf spring is supported on one surface of the housing 600 and the inner wall of the upper case 300, and the reaction force direction of the support point is in the same line to prevent the elastic member 700 from twisting due to the reaction force. can do.

In addition, it is preferable to manufacture one end of the leaf spring integrally with the side surface of the housing 600. This can prevent the spring from being broken due to the concentration of stress in the weld between the spring and the housing 600 as in the prior art.

In addition, the upper surface of the lower case 200 may be further provided with at least one ball bearing 800 to slide the lower surface of the housing 600 or the vibrator 500. Strictly speaking, the ball bearing 800 may slide support the lower surface of the weight 530.

Here, the ball bearing 800 is to support the housing 600 or the vibrator 500 in the same or adjacent position with the elastic member 700, the body on the upper surface of the lower case 200 The base 810 is fixed, and the ball 820 is rotatably coupled to the upper portion of the base 810. That is, since the ball 820 supports the lower portion of the housing 600, the housing 600 and the vibrator 500 may vibrate more smoothly.

As a result, the present invention by applying a structure in which the vibrator 500 can vibrate horizontally by the interaction of the coil 420 and the magnet 510 is powered, fine vibrations can be generated, the rotating body There is an advantage that it is easy to secure the installation space because it is not a structure to rotate. In addition, since the elastic member 700 which elastically supports the vibration part does not easily crack or break even when the repulsive force is repeatedly applied, there is an advantage of preventing the life of the spring from being shortened.

Although the technical idea of the horizontal linear vibration motor 100 for a communication terminal according to the present invention has been described above with the accompanying drawings, this is illustrative of the best embodiment of the present invention and is not intended to limit the present invention. .

Accordingly, it is a matter of course that various modifications and variations of the present invention are possible without departing from the scope of the present invention. And are included in the technical scope of the present invention.

100: vibration motor 200: lower case
300: upper case 310: first locking projection
400: coil portion 410: terminal portion
411: contact 420: coil
500: vibration unit 510: magnet
511: first magnet 512: second magnet
513: third magnet 520: yoke
530: weight 531: coupling groove
600: housing 610: second locking projection
700: elastic member 710: through part
720: upper support 730: lower support
800: ball bearing 810: base
820: ball

Claims

A lower case and an upper case which form a space therein by mutual coupling;
A coil unit installed on an upper surface of the lower case and supplied with power from the outside;
A vibrator having a magnet disposed adjacent to an upper surface of the coil part and vibrating horizontally by interaction with the coil part;
A housing coupled to the vibration unit and reciprocating horizontally by vibration of the vibration unit; And
Both ends are in contact with both sides of the housing and the inner wall surface of the upper case, and includes an elastic member to reciprocate horizontally in a state in which the elastic force is applied when the vibrating portion vibrates,
The elastic member is a pair of leaf springs,
One end of the leaf spring is a horizontal linear vibration motor for a communication terminal, characterized in that integrally formed on the side of the housing.

The method of claim 1,
The coil unit may include: a terminal unit installed on an upper surface of the lower case and exposing a contact unit to the outside of the upper case and the lower case so that power can be supplied from the outside; And
And a coil installed on an upper surface of the terminal unit, the coil being wound in plural and interacting with the magnet by a power supply.

The method of claim 1,
The vibration unit, the yoke is coupled in a state surrounding the upper surface of the magnet; And
Is coupled in a state surrounding the upper surface of the yoke, a horizontal linear vibration motor for a communication terminal further comprising; a weight that provides a predetermined weight required for vibration.

The method of claim 1,
The magnet, the first magnet and the second magnet is provided on both sides with respect to the center,
The first magnet and the second magnet, the horizontal linear vibration motor for the communication terminal, characterized in that the S pole and the N pole are disposed so as to oppose each other.

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The method of claim 1,
The pair of leaf springs, both ends are male bent in the same direction,
The leaf spring is a horizontal linear vibration motor for a communication terminal, characterized in that the bent end is integrally connected to the side of the housing, the other end supports the inner wall surface of the upper case.

The method of claim 1,
The pair of leaf springs are horizontally divided so that a portion thereof is connected, and the divided portions are divided into upper and lower support portions by forming the divided portions to be spread to both sides.
The upper support portion and the lower support portion, each of the horizontal linear vibration motor for a communication terminal, characterized in that for supporting the inner wall surface of the upper case and the side of the housing, respectively.

9. The method according to claim 7 or 8,
The pair of leaf springs, which one is supported in an eccentric position on one side of the housing,
The horizontal linear vibration motor for a communication terminal, characterized in that the other side is supported in an eccentric position in the opposite direction, supporting both sides of the housing staggered.

The method of claim 1,
The upper surface of the lower case, horizontal linear vibration motor for a communication terminal, characterized in that further provided with at least one ball bearing for supporting the lower surface of the housing or the vibrating portion.

The method of claim 10,
The ball bearing is a horizontal linear vibration motor for a communication terminal, characterized in that for sliding support the housing in the same or adjacent position with the elastic member.