KR101116374B1 - Actuator using buckling effect and hand held comprising thereof - Google Patents

Abstract

PURPOSE: An actuator using a buckling phenomenon and a mobile device including the same are provided to improve a vibration force by using an inertial force due to a fast movement of a mover. CONSTITUTION: A buckling type elastic member(300) applies an elastic restoring force. The moving speed of a mover(200) is increased by the elastic restoring force. The buckling type elastic member includes a ring-shaped body(310) and one or more elastic beams(320). One end of the elastic beam is combined with an inner surface of the body. The other end of the elastic beam is protruded to the center of the body.

Description

Actuator using buckling effect and mobile device having the same

The present invention relates to an actuator using a buckling phenomenon, and a mobile device having the same. More specifically, the low-frequency vibration is stronger and faster than the conventional vibration motor by deforming the buckling type elastic member by using the magnetic force generated by the magnetic force generating means and rapidly moving the mover with the elastic restoring force stored in the deformed elastic member. It relates to an actuator using a buckling phenomenon that can generate a, and a mobile device having the same.

With the rapid development of wireless communication technology, portable communication devices are becoming smaller and lighter, and with the increase of memory capacity, portable communication devices equipped with various functions such as multiple chords, video communication, satellite broadcasting (DM B), MP3 and games have recently been developed. Telecommunication devices are becoming more common. As the size of the device becomes smaller and lighter, parts including device devices, IC chips, and circuits mounted inside portable communication devices need to be evolved in size and shape so as to increase space utilization while becoming highly integrated and highly functional.

Therefore, as a part of this trend, many researches have been conducted on small actuators mounted inside portable communication devices to notify incoming calls with silent vibration. In recent years, the actuators can be connected to MP3 and games as well as their own unique functions. There is a need for additional functions that provide vibration information.

1 is a schematic cross-sectional view showing a structure of a conventional vibrator. As shown in Fig. 1, the conventional vibrator is largely composed of a stator and a vibrator. Here, the stator is matched to the outer case of the lower case 20, the circuit board for connecting the circuit to the lower case 20, the coil 30 attached to the center of the upper surface of the circuit board, the lower case 20, the hollow portion at a certain height The coupling member 70 to be formed, the upper case 10 is opposed to the lower case 20 is matched to the upper end of the coupling member 70. In addition, the vibrator has a plurality of leaf springs (60) is installed on the inner wall circumference of the coupling member 70 of the stator to allow the weight (50) to be elastically supported on the hollow portion, the coil 30 on the bottom surface of the weight (50) It is made of a configuration that the magnet 40 is inserted so as to oppose.

In the conventional vibrator, when a power is applied to the coil 30 by using a separate power connector 80, a magnetic field is formed in the coil 30 so that a repulsive force or a suction force acts between the magnet 40. . At this time, the vibrator is moved up and down by using the repulsive force and the suction force, and the vibrator generates a vibration force in a state supported by the leaf spring 60.

However, in the conventional vibrating device, mobile devices such as a mobile phone are highly functional, and as the number of peripheral parts of the mobile phone increases, the installation area gradually decreases and the outside diameter is inevitably reduced. In addition, the weight is reduced to have a problem that the vibration force is lowered.

On the other hand, in order to compensate for this problem in the prior art has been attempted to increase the vibration force by increasing the thickness of the weight 50 to the upper and lower parts. However, this attempt was able to increase the weight 50 by increasing the thickness of the weight 50, but the magnetic force is reduced due to the reduction of the outer diameter of the magnet 40 results in a worse vibration force Brought about

Therefore, there is a need for an actuator capable of generating a strong vibration by maintaining an unstable state in the initial state before operation in order to generate a strong vibration in any pulse, even when a short pulse is applied.

In addition, there is a need for an actuator capable of generating a strong vibration by inertial force due to the fast movement of the mover without attaching a separate weight for generating a strong vibration to the mover.

Then, there is a need for an actuator that can be manufactured in a compact form by simplifying the configuration.

The present invention has been created by the above needs, and the first object of the present invention is to maintain the unstable state in the initial state in order to generate a strong vibration in any pulse, but to move quickly even when a short pulse is applied to the strong vibration It is to provide an actuator using a buckling phenomenon that can generate a, a mobile device having the same.

In addition, a second object is to provide an actuator using a buckling phenomenon that can generate a strong vibration by inertial force due to the fast movement of the mover without attaching a separate weight for generating a strong vibration to the mover, a mobile device having the same There is.

A third object of the present invention is to provide an actuator using a buckling phenomenon, which can be manufactured compactly by simplifying the configuration of the actuator, and a mobile device having the same.

The object of the present invention as described above is to form a magnetic field in response to an electric signal applied to the magnetic force generating means 100 for generating a magnetic force; It is provided on the upper portion of the magnetic force generating means 100, the mover 200 for linear movement in the direction of action of the generated magnetic force; And a buckling-type elastic member 300 coupled to the upper portion of the mover 200 to amplify the kinetic energy during the movement of the mover 200 by the generated magnetic force to increase the moving speed of the mover 200. It can be achieved by providing an actuator using the buckling phenomenon characterized.

In addition, the magnetic force generating means 100 may be characterized in that the solenoid coil.

In addition, the mover 200 may be characterized in that the permanent magnet or solenoid.

In addition, the buckling elastic member 300 may be characterized in that the spring or polymer-based elastic body of stainless steel.

In addition, the buckling-type elastic member 300, the circular ring-shaped body 310, 310, and at least one elastic beam 320, one end is coupled to the inner peripheral surface of the body, the other end protrudes toward the center of the body. ) Is characterized by the above-mentioned.

In addition, the other end of the elastic beam 320 may be characterized in that the T-shaped coupling the elastic member piece 330 of the curved shape in a direction perpendicular to the longitudinal direction of the elastic beam 320.

In addition, the elastic beam 320 may be deformed in the direction of the magnetic force generating means 100 to store the elastic restoring force.

In addition, the actuator is further provided with a case on the outside, a fixed support member that can support and support the magnetic force generating means 100 to the case, and a fixed support that can be fixed to support the buckling-type elastic member 300 to the case It may be characterized by further comprising a member.

The actuator using the buckling phenomenon may further include a power supply unit supplying an electrical signal to the magnetic force generating means 100.

On the other hand, an object of the present invention can be achieved by providing a mobile device characterized in that it comprises an actuator using the above buckling phenomenon.

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According to one embodiment of the present invention, the actuator using the buckling phenomenon maintains an unstable state in the initial state before operation in order to generate a strong vibration in any pulse, but generates a strong vibration by moving quickly even when a short pulse is applied. It can be effective.

In addition, the actuator using the buckling phenomenon has the effect of generating a strong vibration by the inertial force due to the fast movement of the mover without attaching a separate weight for generating a strong vibration to the mover.

In addition, the actuator using the buckling phenomenon has an effect that can be manufactured in a small size by simplifying the configuration.

1 is a schematic cross-sectional view showing a structure of a conventional vibration device;
2 is an exploded perspective view of an actuator using a buckling phenomenon according to an embodiment of the present invention,
Figure 3 is an enlarged perspective view of the buckling elastic member of the actuator using the buckling phenomenon according to an embodiment of the present invention,
Figure 4 is a cross-sectional view showing a state of the buckling elastic member in the initial state of the actuator using the buckling phenomenon according to an embodiment of the present invention,
5a and 5b is a cross-sectional view for explaining the operation principle of the actuator using the buckling phenomenon according to an embodiment of the present invention,
6 is a flowchart sequentially showing a vibration generating method using an actuator using a buckling phenomenon according to an embodiment of the present invention.

< Actuator >

2 is an exploded perspective view of an actuator using a buckling phenomenon according to an embodiment of the present invention. As shown in Figure 2, the actuator using the buckling phenomenon is composed of a magnetic force generating means 100, the mover 200, the buckling elastic member 300. Hereinafter, each component is explained in full detail.

Magnetic force generating means 100 serves to generate a magnetic force capable of moving the mover 200. In this case, a solenoid coil may be used as the magnetic force generating means 100. The solenoid coil may be made of a material such as copper which is commonly used. The strength of the magnetic force can be adjusted by the number of turns of the solenoid coil. In addition, the N pole and the S pole of the coil may be converted according to the input direction of the electric signal according to the law of ampere. That is, it is possible to reciprocate the mover 200 by applying attraction or repulsive force to the mover 200 in accordance with the polarity of the upper and lower parts of the solenoid coil.

The mover 200 is provided above the magnetic force generating means 100 and may be composed of a permanent magnet or a solenoid. The mover 200 receives linear attraction or repulsion by the magnetic force generated by the magnetic force generating means 100 to perform linear reciprocating motion in a direction parallel to the solenoid coil. On the other hand, when the magnetic force generating means 100 is a solenoid coil, a part of the mover 200 may be immersed in the solenoid coil, the remaining portion may protrude out of the solenoid. That is, when an electric signal is input to the solenoid coil to form a magnetic field, the mover 200 linearly reciprocates the inside of the solenoid coil according to the polarity of the solenoid coil.

Buckling-type elastic member 300 is coupled to the upper surface of the mover 200, serves to amplify the kinetic energy during the movement of the mover 200 by the magnetic force generated by the magnetic force generating means (100). Here, the buckling elastic member 300 may be a copper alloy spring, nickel alloy spring, stainless steel (SUS) -based spring, polymer-based elastic body may be used. Here, thermoplastic elastomers (TPE) such as polyurethane, polyester, and polyamide may be used as the polymer-based elastomer. In addition, the elastic member may be formed of an elastic material having a restoring force such as silicon.

3 is an enlarged perspective view of the buckling elastic member 300 of the actuator using the buckling phenomenon according to an embodiment of the present invention. As shown in FIG. 3, the buckling elastic member 300 has a circular ring-shaped body 310 and an elastic beam 320 having one end coupled to the inner circumferential surface of the body and the other end protruding toward the center of the body. I'm doing it. Here, the body of the buckling elastic member 300 may have a variety of shapes, such as not only circular but also rectangular, hexagonal. Meanwhile, the elastic beam 320 may be provided with at least one, but it is preferable that a plurality of elastic beams 320 are coupled to the body in order to increase the elastic restoring force applied to the mover 200.

In addition, the other end of the elastic beam 320 protruding toward the center of the body may have a T-shape in which the elastic member fragment 330 of the curved shape is coupled in a direction perpendicular to the longitudinal direction of the elastic beam 320. Here, the elastic member segment 330 may be a section of a flat shape. The other ends of the elastic beams 320 protruding toward the center of the body are preferably spaced apart from each other at a predetermined interval from the center of the body. This is because the elastic beams 320 must be separated from each other so that the elastic beams 320 can be bent well according to the movement of the coupled mover 200 to store and act on an appropriate elastic restoring force.

4 is a cross-sectional view showing a state of the buckling elastic member 300 in the initial state of the actuator using the buckling phenomenon according to an embodiment of the present invention. As shown in FIG. 4, the elastic beam 320 coupled to the mover 200 in the initial state is bent in one of up and down directions to store the elastic restoring force while maintaining an unstable state. The elastic restoring force thus stored serves to increase the moving speed when the mover 200 moves. Meanwhile, the bending direction of the elastic beam 320 coupled to the mover 200 may also be changed by changing the position of the mover 200 according to the magnetic pole generating means 100. That is, the elastic beam 320 is bent in the downward direction when the attraction force is acting on the mover 200, the elastic beam 320 is bent in the upper direction when the repulsive force is acting on the mover 200, the elastic restoring force Will be saved.

5A and 5B are cross-sectional views illustrating an operating principle of an actuator using a buckling phenomenon according to an embodiment of the present invention. 5A is a state in which an attractive force is acting between the mover 200 and the magnetic force generating means 100, and FIG. 5B is a state in which repulsive force is acting between the mover 200 and the magnetic force generating means 100. The initial state of the elastic beam 320 according to the position of the mover 200 may vary depending on the type of magnetic poles formed in the magnetic force generating means 100 in accordance with the direction of the electrical signal applied to the magnetic force generating means 100. That is, in the case where the upper part of the mover 200 is the N pole and the lower part is the S pole, when the S pole is formed on the magnetic force generating means 100 by an electrical signal applied to the magnetic force generating means 100, the magnetic force generating means ( An attractive force acts between the 100 and the mover 200 to form a state as shown in FIG. 5A. On the other hand, when an electric signal in the opposite direction is applied to the magnetic force generating means 100 so that an N pole is formed on the magnetic force generating means 100, the repulsive force is acted between the magnetic force generating means 100 and the mover 200, and FIG. 5B. Will be in the same state as

On the other hand, the actuator of the present invention may be further provided with a case (not shown) on the outside, and a fixed support member (not shown) capable of fixing and supporting the magnetic force generating means 100 to the base portion 400 of the case; A fixed support member (not shown) capable of fixing and supporting the buckling elastic member 300 may be provided. Here, it is preferable that the case forms a sufficient space for the mover 200 to linearly reciprocate. In addition, the case or the fixed support member may be made of various materials such as iron or plastic that are commonly used in accordance with the device is equipped with the actuator of the present invention.

On the other hand, the actuator of the present invention may further include a power supply (not shown) for supplying an electrical signal to the magnetic force generating means (100). The power supply unit controls the magnetic force generating means 100 by applying force or repulsive force between the magnetic force generating means 100 and the mover 200 by applying an electric signal in the opposite direction while intermittent tens or hundreds of times during one second. do. At this time, the mover 200 performs a linear reciprocating motion tens to hundreds of times in one second.

Referring to the operation of the present invention having the above configuration as follows.

Initially, the attraction force is applied between the magnetic force generating means 100 and the mover 200 by an electric signal applied to the magnetic force generating means 100, so that the elastic beam 320 of the buckling elastic member 300 is the magnetic force generating means ( In the direction of 100). At this time, the buckling elastic member 300 is to store the elastic restoring force while maintaining an unstable state. Thereafter, when an electric signal in a direction opposite to the electric signal initially applied to the magnetic force generating means 100 is applied, a repulsive force is acted between the magnetic force generating means 100 and the mover 200 so that the mover 200 generates the magnetic force generating means. It moves in a direction away from the (100). When the mover 200 moves, the elastic restoring force stored in the buckling elastic member 300 increases the moving speed of the mover 200. After the buckling elastic member 300 is deformed in the opposite direction from the initial state, the mover 200 stops moving, and strong low frequency vibration is generated by the generated inertial force. On the other hand, this process is repeated dozens or hundreds of times in a short time, the vibration continues to occur.

<Mobile device>

There are various kinds of mobile devices such as MP3 players, mobile phones, netbooks, PSPs, PMPs, PDAs, etc. Recently, haptic feedback has been used for mobile devices to help users interact with devices through intuitive and realistic information, and research on this is being actively conducted. Such mobile devices are configured with actuators that generate vibrations to provide haptic feedback. Mobile devices are generally mobile devices such as main board, display unit, memory unit, sound device, communication unit, vibration generator, etc. Each device consists of various components. Mobile devices having actuators using the buckling phenomenon of the present invention have the effect of providing a haptic feedback to the user by generating a strong vibration while consuming low power. Meanwhile, the actuator of the present invention may be used in a remote controller or the like to provide haptic feedback. The remote control is an electronic product for remotely controlling various electronic products such as TV and audio, and is widely used in homes as well as factories, and its use range is getting wider. Therefore, by applying the actuator to the remote control it can have an effect that can determine whether the operation of the device by generating a vibration when transmitting a signal by pressing the keypad. Hereinafter, in the mobile device having an actuator using the buckling phenomenon of the present invention, the actuator has already been described in the detailed description of the actuator, and other components of the mobile device may already be known, and thus, Detailed description thereof will be omitted.

<How to generate vibration>

6 is a flowchart sequentially showing a vibration generating method using an actuator using a buckling phenomenon according to an embodiment of the present invention. Hereinafter, a method of generating vibration using an actuator using a buckling phenomenon will be described with reference to FIG. 6, and the descriptions overlapping with those described in the actuator will be omitted.

First, the buckling elastic member 300 coupled to the mover 200 is deformed in the direction of the magnetic force generating means 100 to store the elastic restoring force (S510).

Next, an electrical signal is applied to the magnetic force generating means 100 generates a magnetic force (S520).

Next, the generated magnetic force moves the mover 200 (S530).

Next, the elastic restoring force is applied to the mover 200 to which the buckling elastic member 300 moves (S540).

Next, the kinetic energy of the mover 200 is amplified to increase the moving speed of the mover 200 (S550).

Next, the buckling elastic member 300 is deformed in a direction away from the magnetic force generating means 100 (S560).

Finally, vibration is generated by the inertial force generated while the buckling elastic member 300 is deformed in the opposite direction (S570).

On the other hand, the vibration generated in the step of generating the vibration (S570) may be a low frequency vibration.

Although the technical spirit of the present invention has been described above with reference to the accompanying drawings, it is intended to exemplarily describe the best embodiment of the present invention, but not to limit the present invention. In addition, it is obvious that any person skilled in the art may make various modifications and imitations without departing from the scope of the technical idea of the present invention.

100: magnetic force generating means
200: mover
300: buckling elastic member
310: the body of the circular ring shape
320: elastic beam
330: elastic member slice
400: base part of the case

Claims (12)

Magnetic force generating means (100) for forming a magnetic field and generating a magnetic force in response to an applied electric signal;
A mover 200 disposed above the magnetic force generating means 100 and capable of linear movement in the direction of action of the generated magnetic force; And
A buckling type elastic member 300 coupled to the upper portion of the mover 200 and applying an elastic restoring force to increase a moving speed of the mover 200 when the mover 200 is moved by the generated magnetic force; Include,
The buckling elastic member 300,
Circular ring-shaped body 310 and,
One end is coupled to the inner circumferential surface of the body, the other end of the actuator using a buckling phenomenon characterized in that it comprises at least one elastic beam (320) protruding toward the center of the body.
Claim 2 has been abandoned due to the setting registration fee. The method of claim 1,
The magnetic force generating means 100 is an actuator using a buckling phenomenon, characterized in that the solenoid coil.
Claim 3 was abandoned when the setup registration fee was paid. The method of claim 1,
The mover 200 is an actuator using a buckling phenomenon, characterized in that the permanent magnet or solenoid.
The method of claim 1,
The buckling elastic member 300 is an actuator using a buckling phenomenon, characterized in that the spring or polymer-based elastomer of stainless steel.
delete The method of claim 1,
The other end of the elastic beam 320 is an actuator using a buckling phenomenon, characterized in that the T-shape is coupled to the elastic member piece 330 of the curved shape in a direction perpendicular to the longitudinal direction of the elastic beam (320).
The method of claim 6,
The elastic beam 320 is deformed in the direction of the magnetic force generating means 100, the actuator using the buckling phenomenon, characterized in that for storing the elastic restoring force.
The method of claim 1,
The actuator further has a case on the outside,
A fixed support member capable of fixing and supporting the magnetic force generating means 100 in the case;
The actuator using the buckling phenomenon, characterized in that the case further comprises a fixed support member for fixing and supporting the buckling type elastic member (300).
The method of claim 1,
The actuator using the buckling phenomenon further comprises a power supply unit for supplying an electric signal to the magnetic force generating means (100).
A mobile device comprising an actuator using the buckling phenomenon according to any one of claims 1 to 4 and 6 to 9. delete delete

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