KR20110036142A - Apparatus utilizing electromagnetic induction based on reaction upon external force for providing passive haptic feedback, module providing passive haptic feedback using the same, portable unit using the same and control method therewith - Google Patents

Abstract

PURPOSE: An apparatus utilizing electromagnetic Induction based on reaction upon external force for providing a passive haptic feedback, a module providing passive haptic feedback using the same, a portable unit using the same and a control method therewith are provided to supply to a user a haptic feedback corresponding to measured external force by measuring the strength of external force through an electric signal within a second magnetic generating unit. CONSTITUTION: A first magnetism generating unit(30) is connected to a lower portion of a pressure plate(20), and generates magnetic force. An elastic force supply unit(40) provides the pressure plate with elastic force. A second magnetism generating unit(50) generates an electric signal through an electromagnetic induction effect of the first magnetic generating unit, and generates magnetic force. A measurement unit measures the strength of the external force through the generated electric signal.

Description

Apparatus Utilizing electromagnetic Induction based on Reaction upon External Force for Providing Passive Haptic Feedback, Module Providing Passive Haptic Feedback Using the Electromagnetically Induced Haptic Providing Device Using Electromagnetic Induction Phenomenon Same, Portable Unit Using the Same and Control Method therewith}

The present invention relates to an external force-responsive haptic providing device using an electromagnetic induction phenomenon, a haptic providing module using the same, a portable terminal using the same, and a control method thereof, and more particularly, electromagnetic according to the reciprocation of the first magnetic force generating means connected to the pressing plate. It is possible to detect the strength of the external force by using the electrical signal in the second magnetic force generating means generated by the induction phenomenon, to provide the user with haptic feedback corresponding to the strength of the external force, and to realize low power consumption of the haptic providing device. The present invention relates to an external force response haptic providing device using electromagnetic induction phenomena that can be easily miniaturized by simplifying the configuration of the haptic providing device, a haptic providing module using the same, a portable terminal using the same, and a control method thereof. .

Recently, in order to provide haptic feedback to a touch screen of a mobile terminal, development of a small haptic providing device has been actively made. Here, haptic is a tactile sensation that can be felt at the tip of a human finger when touching an object. Tactile feedback, which is felt when the skin touches the surface of the object, and muscles, which are felt when the movement of joints and muscles is disturbed. This concept encompasses kinesthetic force feedback. To implement such haptic feedback, mechatronics equipment using a motor and a link mechanism has been used. However, such a mechanical haptic providing device is expensive, has a complicated link structure, is difficult to miniaturize, and it is difficult to realize a quick response speed due to inertia.

In order to overcome this problem, a haptic providing device using a rheological fluid or an electromagnet is developed. However, since the haptic providing device using such a rheological fluid or an electromagnet provides a unidirectional vibration or rigidity to a user, it is impossible to provide various haptic feedback. Complementing this by providing a separate force sensor in the haptic providing device was able to receive a variety of haptic feedback based on the external force applied. However, the provision of a separate force sensor requires a separate power, the wiring is complicated and there was a problem contrary to the miniaturization trend. In spite of these problems, the development of a haptic providing device that can be driven at low power and can be miniaturized through a simple configuration is difficult.

Accordingly, the present invention was created to solve the above problems, and measures the intensity of the external force using an electrical signal in the second magnetic force generating means generated by the electromagnetic induction phenomenon caused by the reciprocation of the first magnetic force generating means connected to the pressing plate. It is possible to provide a haptic feedback device using an electromagnetic induction phenomenon that can provide haptic feedback to the user corresponding to the measured external force strength, a haptic providing module using the same, a mobile terminal using the same and a control method thereof There is.

Further, another object of the present invention is that the second magnetic force generating means acts as a force sensor and a driving part of vibration and rigid haptic feedback, thereby contributing to miniaturization and manufacturing as the configuration of the haptic providing apparatus according to the present invention is simplified. An external force-responsive haptic providing device using this easy electromagnetic induction phenomenon, a haptic providing module using the same, a portable terminal using the same and a control method thereof.

In addition, another object of the present invention is to provide a variety of vibration or stiff haptic feedback to the user through the control of the power applied to the first and second magnetic force generating means as well as the electromagnetic induction that can implement a button click feeling An external force-responsive haptic providing apparatus, a haptic providing module using the same, a portable terminal using the same, and a control method thereof are provided.

Other objects, specific advantages and novel features of the invention will become apparent from the following detailed description and the preferred embodiments described in conjunction with the accompanying drawings.

Means for achieving the object of the present invention, the housing is formed in the appearance and provided with a receiving space therein; A pressing plate provided at an upper portion of the housing and acting on an external force; First magnetic force generating means connected to the lower part of the pressing plate and reciprocating in one direction in the housing according to the strength of the external force and generating magnetic force; Elastic providing means provided between the pressing plate and the first magnetic force generating means to provide an elastic force to the pressing plate; Second magnetic force generating means for generating an electrical signal by an electromagnetic induction phenomenon according to the reciprocation of the first magnetic force generating means and being provided inside the housing so that the first magnetic force generating means and the attraction force or the repulsive force act; Measuring means connected to the second magnetic force generating means and receiving the generated electrical signal to measure the strength of the external force; And control means connected to the measuring means and the first and second magnetic force generating means to control the power supplied to the first and second magnetic force generating means, the control means being based on the strength of the external force. It is characterized in that the external force response haptic providing device using the electromagnetic induction phenomenon to provide a haptic feedback to the user by adjusting the attraction force or repulsive force acting between the second magnetic force generating means.

In addition, the first magnetic force generating means is characterized in that the permanent magnet or electromagnet.

In addition, the elasticity providing means is characterized in that the rubber spring, a synthetic resin film or a spiral spring having a soft elasticity.

In addition, the second magnetic force generating means is characterized by consisting of a coil formed along the inner surface of the housing so that the first magnetic force generating means can be inserted into the central region of the second magnetic force generating means.

In addition, the coil of the second magnetic force generating means, the external force sensing coil for generating an electrical signal by the electromagnetic induction phenomenon according to the reciprocation of the first magnetic force generating means; And a magnetic force generating coil for generating magnetic force so that the first magnetic force generating means and the attraction force or the repulsive force can act.

In addition, the control means, in order to provide a vibration haptic feedback to the user, by applying a constant DC power to one of the first, second magnetic force generating means and a pulse power having a period to the other, the first, second It is characterized in that the vibration is generated by the attraction or repulsive force between the magnetic force generating means.

In addition, the control means, by independently controlling the power supplied to the first and second magnetic force generating means in accordance with the measured strength of the external force to implement a rigidity which is a resistance to the external force.

In addition, the device using the present invention, by arranging a plurality of external force response haptic providing device using the electromagnetic induction phenomenon, the user can input the data, the haptic providing module that can provide the user with haptic feedback corresponding to the input It is characterized by that.

In addition, the haptic providing module, a plurality of pressing plate that the external force acts; First magnetic force generating means connected to the lower part of the pressing plate and reciprocating in one direction according to the strength of the external force, generating magnetic force, and having the same number as the number of pressing plates; Elastic providing means provided between the plurality of pressing plates and the first magnetic force generating means, respectively, to provide an elastic force to the pressing plate; A plate-shaped separator having receiving grooves for accommodating the first magnetic force generating means, respectively, to reduce the interference of the magnetic force between the first magnetic force generating means; Second magnetic force generating means for generating an electrical signal by electromagnetic induction according to the reciprocation of the first magnetic force generating means, and being provided on the inner side of the receiving groove so that the attraction force or the repulsive force can act on the first magnetic force generating means; Measuring means connected to the second magnetic force generating means and receiving the generated electrical signal to measure the strength of the external force; And control means connected to the measuring means, the first and second magnetic force generating means, and controlling the power supplied to the first and second magnetic force generating means based on the measured intensity of the external force.

In addition, the pressing plate, the first magnetic force generating means, the elasticity providing means, the receiving groove and the second magnetic force generating means is characterized in that each consisting of two to four.

In addition, the device using the present invention, characterized in that the portable terminal having a haptic providing module as a button unit, the user can input data and can provide the user with haptic feedback corresponding to the input.

In addition, the device using the present invention, by providing a haptic providing module to each side of the glove corresponding to the finger-fingered finger end, the user can input data, can provide the user with haptic feedback corresponding to the input Characterized in that the armored user input device.

In addition, according to another category of the present invention, an external force is applied to the pressing plate to move the pressing plate and the first magnetic force generating means in one direction; Generating, by the second magnetic force generating means, an electrical signal by an electromagnetic induction phenomenon caused by the movement of the first magnetic force generating means; Measuring the strength of the external force by receiving the electrical signal generated by the measuring means; And independently controlling the power provided to the first magnetic force generating means and the second magnetic force generating means based on the measured intensity of the external force to provide haptic feedback to the user. External force response using the electromagnetic induction phenomenon It is characterized in that the control method of the type haptic providing device.

In addition, the step of providing haptic feedback, in order to provide a vibration haptic feedback to the user, by applying a constant DC power to one of the first, second magnetic force generating means and a pulse power having a period to the other one of the first It characterized in that the vibration is generated by the repetitive action of the attraction force or repulsive force between the second magnetic force generating means.

In addition, the step of providing haptic feedback, characterized in that to independently control the power supplied to the first and second magnetic force generating means according to the measured strength of the external force to implement a rigidity which is a resistance to the external force.

In addition, the resistance when the rigidity is implemented, characterized in that it further comprises a repulsive force between the first, second magnetic force generating means, the elastic force of the elastic providing means.

In addition, the control means for controlling the power applied to the first and second magnetic force generating means, respectively, in order to adjust the recovery speed to the initial position of the pressing plate; characterized in that it further comprises.

In addition, the first step of increasing the resistance while the pressing plate and the pressing plate and the first magnetic force generating means is moved in one direction to a predetermined depth; A second step in which the resistive force is constantly maintained at a size smaller than the resistive force acting at the predetermined depth while the pressing plate and the first magnetic force generating means are moved further in one direction by the external force; And a third step of increasing the resistive force while the pressing plate and the first magnetic force generating means move in one direction more than the depth at which the resistive force is kept constant by an external force, wherein the haptic of the button click feeling is provided to the user. do.

According to the present invention it is possible to measure the intensity of the external force by using the electrical signal in the second magnetic force generating means generated by the electromagnetic induction phenomenon in accordance with the reciprocation of the first magnetic force generating means connected to the pressing plate corresponding to the measured intensity of the external force There is an effect that can provide haptic feedback to the user.

In addition, since it is possible to provide haptic feedback corresponding to the strength of the external force without providing a separate force sensor, there is an effect of realizing low power consumption of the haptic providing apparatus. In particular, since the second magnetic force generating means serves as a force sensor and a driving part of vibration and rigid haptic feedback, the configuration of the haptic providing apparatus according to the present invention can be simplified and contribute to miniaturization, and the manufacturing is easy.

In addition, through the control of the power applied to the first and second magnetic force generating means, it is possible not only to provide various vibration or rigid haptic feedback to the user but also to realize a button click feeling.

Particularly, when the second magnetic force generating means is driven by a combination of an external force sensing coil and a coil separately formed as a magnetic force generating coil, the second magnetic force generating means can provide the user with quick and accurate vibration and rigid haptic feedback on the external force applied by the user. It has an effect.

In addition, an arbitrary time point at which the electrical signal induced to the second magnetic force generating means changes according to the external force applied to the pressing plate can be set as the input processing point of data or command by the user, and thus can be applied to various user input devices such as a keyboard or a mouse. It has an effect.

< Of haptic providing device  Configuration>

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the configuration of the external force-responsive haptic providing apparatus 1 using the electromagnetic induction phenomenon according to a preferred embodiment of the present invention. First, FIG. 1 is an exploded perspective view of an external force response haptic providing apparatus using electromagnetic induction according to the present invention, and FIG. 2 is a combined perspective view of an external force response haptic providing apparatus using electromagnetic induction according to the present invention.

As shown in Figure 1 and 2, the external force response haptic providing apparatus 1 using the electromagnetic induction phenomenon according to the present invention is roughly the housing 10, the pressing plate 20, the first magnetic force generating means 30, It includes elastic providing means 40, the second magnetic force generating means 50, the measuring means 60 and the control means 70 and the like. External force response type haptic providing device (1) using the electromagnetic induction phenomenon is manufactured to be small to be applied to the button portion of the portable terminal, for example, the shape of a cylindrical or rectangular parallelepiped of 5mm × 5mm × 3mm, respectively Or the like.

Figure 3a is a cross-sectional perspective view of the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention. As shown in FIG. 3A, the housing 10 is a component for forming an external appearance of the external force response haptic providing apparatus 1 using the electromagnetic induction phenomenon according to the present invention. The first magnetic force generating means 30 and At least one side having a space in which the second magnetic force generating means 50 can be accommodated may be manufactured in an open box shape. The housing 10 may be formed in a cross section based on the longitudinal direction in a circle, oval or polygon. At this time, the housing 10 is preferably formed of a non-magnetic material such as synthetic resin to prevent the interference of the magnetic field to occur when a plurality of external force response haptic providing device 1 is used adjacent to.

The pressing plate 20 is a component to which an external force generated by a user is directly applied, and is provided on the housing 10 and connected to the first magnetic force generating means 30 to be described later. At this time, the pressing plate 20 is formed in a plate shape and a protruding rod is formed in the center area of the lower surface thereof may be connected to the first magnetic force generating means (30).

Thus, if the shape of the pressing plate 20 connected to the first magnetic force generating means 30 is a shape that can properly transmit the force applied from the outside to the first magnetic force generating means 30 provided in the housing 10, use It can be deformed into any shape according to the aspect.

The first magnetic force generating means 30 is basically a component for generating a magnetic force through the formation of a magnetic field, and at the same time inducing a magnetic field change in the housing 10, and is connected to the lower part of the pressing plate 20. The first magnetic force generating means 30 connected to the lower portion of the pressing plate 20 is reciprocated in one direction in the housing 10 according to the external force applied to the pressing plate 20. Here, of course, the first magnetic force generating means 30 may be manufactured in various shapes such as a rod shape or a plate shape. However, it is preferable to produce a rod-like shape so that insertion is possible in the center region of the second magnetic force generating means 30 which will be described later.

The first magnetic force generating means 30 may be specifically implemented as a permanent magnet or an electromagnet. When the first magnetic force generating means 30 is implemented as a permanent magnet, it is not necessary to provide an additional power source, so that the structure and the wiring can be simplified, which can help miniaturization. On the other hand, in the case of implementing the first magnetic force generating means 30 with the electromagnet, the wiring of the haptic providing apparatus 1 according to the present invention is complicated and the power consumption is increased, while the conductive wire wound to form the electromagnet By increasing the intensity of the number and the current applied there is an advantage that can implement a haptic having various magnitudes of vibration and stiffness.

The elastic providing means 40 is a component for providing an elastic force to the pressing plate 20, and is fixed between the pressing plate and the first magnetic force generating means 30, respectively on the upper and lower surfaces of the central region of the elastic providing means 40 The pressing plate 20 and the first magnetic force generating means 30 may be fixed by bonding. In addition, the elastic providing means 40 is deformable in such a way that the pressing plate 20 and the first magnetic force generating means 30 is connected and then inserted and fixed.

The outside of the fixed elastic providing means 40 is fixedly coupled to the housing (10). As a result, the central region of the elastic providing means 40 is pressed downward according to the external force applied to the pressing plate 40, thereby deforming the shape, thereby providing the elastic force to the pressing plate 40.

On the other hand, the elastic providing means 40 can be produced in the form of a film, such as a rubber film or a synthetic resin film having a soft elasticity. In addition, a leaf spring 42 may be used, which forms a structure in which the leaf spring 42 spirals toward the central area from the outside of the leaf spring 42. At this time, since the elastic providing means 40 made of the leaf spring 42 is open at both ends, an electrical signal that is an induced current is not generated due to the change in the magnetic field caused by the reciprocation of the first magnetic force generating means 30. Such elastic providing means 40 can be variously modified according to the use and purpose of the haptic providing device 1 according to the present invention.

The second magnetic force generating means 50 generates an electrical signal by the electromagnetic induction phenomenon according to the reciprocation of the first magnetic force generating means 30, and generates a magnetic force so that the attraction force or repulsive force can act with the first magnetic force generating means 30. It is a component that occurs. If this is divided, it is as follows.

First, the second magnetic force generating means 50 is provided inside the housing 10. The second magnetic force generating means 50 in the embodiment of the present invention is bobbin along the inner surface of the housing 10 so that the first magnetic force generating means 30 can be inserted into the central region of the second magnetic force generating means 50. This is done by forming a coil (concentric) that is not present. Through this, the miniaturization (height reduction) of the external force-responsive haptic providing device 1 using the electromagnetic induction phenomenon and the vibration and rigidity of the haptic providing device 1 can be realized.

Here, the second magnetic force generating means 50 generates an electrical signal even when no separate power is applied by the electromagnetic induction phenomenon caused by the reciprocation of the first magnetic force generating means 30 that forms the magnetic field. This is because the first magnetic force generating means 30 provided in the central region of the elastic providing means 40 changes the magnetic field in the housing 10 while reciprocating in one direction.

At this time, the intensity of the generated electrical signal is proportional to the intensity (pressing speed) of the external force which can be treated as the rate of change of magnetic flux (magnetic force line) per unit time. Therefore, the strength of the external force can be known by measuring the strength of the electrical signal, and thus, the second magnetic force generating means 50 can be used as the force sensor.

In addition, the intensity of the electrical signal thus induced is proportional to the number of conductors wound along the inner surface of the housing 10. Therefore, in order to accurately measure the strength of the electrical signal in a wide range through the measuring means 60 to be described later, in the case of coils of the same size, by thinning the thickness of the conductors forming the coil to the number of conductors wound in the coil of unit length It is desirable to increase.

Next, when the external power source is applied, the second magnetic force generating means 50 forms a magnetic field to interact with the magnetic field formed by the first magnetic force generating means 30 (human or repulsive force). At this time, the strength of the magnetic force of the second magnetic force generating means 50 is proportional to the strength of the applied current and the number of conductors wound to form the coil. Therefore, in order to realize low power, it is desirable to increase the number of wires wound using thin wires.

As described above, descriptions relating to the generation of the magnetic signal of the induced current and the second magnetic force generating means 50 described above can be described by referring to and applying the contents specified in the Faraday Law.

On the other hand, the electrical signal may be transmitted to the measuring means 60 by connecting the terminal pins 52 formed at both ends of the conductive wire constituting the coil by the measuring means 60 and the conductive wire which will be described later. In addition, a power source provided to the second magnetic force generating means 50 may also be provided to the second magnetic force generating means 50 by connecting the terminal pin 52 to the control means 70 to be described later by a conductive wire.

3B is a cross-sectional view when the second magnetic force generating means consists of an external force detecting coil and a magnetic force generating coil. As shown in FIG. 3B, the second magnetic force generating means 50 in the embodiment of the present invention may be formed by a combination of coils separately formed as the external force detecting coil 54 and the magnetic force generating coil 56. . At this time, the external force detecting coil 54 generates an electrical signal due to electromagnetic induction caused by the reciprocation of the first magnetic force generating means 30. And the magnetic force generating coil 56 generates a magnetic force so that the first magnetic force generating means 30 and the attraction force or repulsive force can act. At this time, both ends of the external force detecting coil 54 is connected to the measuring means 50 and the magnetic force generating coil 56 is connected to the control means 70. This measures the strength of the external force through the measuring means 60 based on the electrical signal generated by the external force detecting coil 54 and at the same time provides power to the magnetic force generating coil 56 through the control means 70. To do so.

The external force sensing coil 54 and the magnetic force generating coil 56 is any one of the two forms a bobbin-free coil along the inner surface of the housing 10, the other one bobbin along the inner surface of the coil thus formed It can be fabricated in such a way as to re-form a missing coil. At this time, it is preferable to insert a magnetic shielding material 58 between the external force detecting coil 54 and the magnetic force generating coil 56 to prevent interference of magnetic forces that may occur between each other.

Measuring means 60 is a component for measuring the strength of the external force applied to the pressing plate 20 by receiving the electrical signal generated by the second magnetic force generating means 50, the second magnetic force generating means 50 Terminal pins 52 formed at both ends of the terminal are connected with an insulated thin conductor. In this case, the measuring means 60 may measure the strength of the external force in consideration of the correlation (proportionality) between the strength of the electrical signal transmitted through the terminal pin 52 and the strength of the external force. At this time, since the strength of the electrical signal represents a function having a continuous increase and decrease along the time axis, the electrical signal, which is the reference for measuring the strength of the external force, is measured at the point when the electrical signal is maximum at the time of the first occurrence of the electrical signal. It can be set as an average value.

The intensity value of the external force measured through the measuring means 60 on the basis of the strength of the electrical signal is transmitted to the control means 70 to be described later.

On the other hand, when the pressing plate 20 and the first magnetic force generating means 30 that has been moved in one direction by the external force of the user no longer moves (when there is no change in the surrounding magnetic field), the second magnetic force generating means 50 The electrical signal, which is the induced current within, gradually decreases and eventually no longer generates an electrical signal.

In this case, the measuring means 60 may generate the input processing request information by treating the point of time at which the user inputs the data or the command when the electric signal is gradually decreased and is no longer generated. The input processing time of the data or command by the user may be changed to various time points such as the time when the electric signal is first generated or the time when the intensity of the electric signal is maximum.

The input processing request information is information for requesting processing of an input value corresponding to the haptic providing device 1 of the pressing plate 20 pressed by the user (for example, a command for moving a cursor in a corresponding direction according to an input of pressing a keyboard direction key). After processing through the microcomputer, it can be output through an output device such as a monitor. For this reason, the external force-responsive haptic mill factory 1 according to the present invention can be utilized as a user input device such as a keyboard or a mouse.

On the other hand, as another method of measuring the strength of the external force through the measuring means 60, first, the measuring means 60 applies a constant power to the second magnetic force generating means 50 so that the current flows constantly. In this state, when the user exerts an external force on the pressing plate 20, the current flowing in the second magnetic force generating means 50 is changed due to the magnetic field change by the first magnetic force generating means 30. At this time, the intensity of the external force by the user and the change of the current value flowing in the second magnetic force generating means 50 have a constant correlation (proportional relationship). The measuring means 60 may measure the strength of the external force in consideration of a constant correlation between the strength of the external force and the change of the current value flowing in the second magnetic force generating means 50.

The control means 70 is a haptic feedback mode to implement the attraction force or repulsive force acting between the first and second magnetic force generating means 30,50 based on the intensity value of the external force measured by the measuring means 60 described above. It is a component for adjusting accordingly. The adjustment of the attraction force or the repulsive force by the control means 70 is made by controlling the power supplied to the first and second magnetic force generating means (30, 50). At this time, the control means 70 may be connected to the measuring means 60, the first and second magnetic force generating means 30, 50 by a thin conductive wire or a wire printed on the substrate, respectively. Here, controlling the power source means applying power by controlling the intensity (current or voltage intensity), the time to be applied, and the period (when pulse power is applied).

In particular, the control means 70 is the first and second magnetic force generating means (30, 50) to provide a vibration haptic feedback to the user through the external force response haptic providing apparatus 1 using the electromagnetic induction phenomenon according to the present invention One of the DC power supplies may be applied constantly, and the other may apply a pulse power supply having a period. As a result, the side to which the DC power is applied forms a constant magnetic field so that the polarity (N pole or S pole) is fixed, but the side to which the pulse power having a period is applied changes its polarity repeatedly according to the cycle of the pulse power. Accordingly, the attraction force and the repulsive force alternately act between the first and second magnetic force generating means 30 and 50 to generate vibration.

In addition, the control means 70 independently controls the power provided to the first and second magnetic force generating means (30, 50) according to the strength of the external force measured by the measuring means 60, the rigidity which is resistance to external force Can be implemented. For example, when the external force is weakly applied by the user, the power may be applied to the first and second magnetic force generating means 30 and 50 so that the weak repulsive force acts, respectively, to achieve rigidity proportional to the external force. On the contrary, when an external force is strongly applied by the user, power may be applied to the first and second magnetic force generating means 30 and 50 so that a strong repulsive force may be applied, respectively, to realize stiffness proportional to the external force. In addition to the above-described example, the control means 70 may provide the user with haptic feedback of various feelings by appropriately adjusting the polarity change between the first and second magnetic force generating means 30 and 50 and the intensity of the applied magnetic force.

On the other hand, the control means 70 can be implemented in one embedded system incorporating the functions of the above-described measuring means 60, of course.

< Of haptic provision module  Composition and Devices Using the Same>

Hereinafter, the haptic providing module 100 according to the present invention will be described with reference to the accompanying drawings. First, Figure 4 is an exploded perspective view of the haptic providing module according to the present invention, Figure 5 is a combined perspective view of the haptic providing module according to the present invention.

The haptic providing module 100 according to the present invention simply mounts a plurality of external force response type haptic providing apparatus 1 using the above-described electromagnetic induction phenomenon to a printed circuit board, etc., and then measures the measuring means 60 and control. It can be formed by connecting with the means 70. At this time, the control means 70 is preferably implemented to be able to independently control the plurality of external force response haptic providing device (1). The haptic providing module 100 formed as described above may be used in various ways in a user input device such as a button unit, a keyboard, or a mouse of a portable terminal.

Hereinafter, a specific configuration of the haptic providing module 100, an example in which the haptic providing module 100 is utilized in the portable terminal 200, and an example in which the haptic providing module 100 is used as the armored user input device 300 in order It demonstrates with reference to drawings.

As shown in Figure 4 and 5, the haptic providing module 100 according to the present invention is approximately a plurality of pressing plate 20, the same number of the first magnetic force generating means 30, the same number of elastic providing means 40, the separator 80, the second magnetic force generating means 50, the measuring means 60, the control means 70, and the like. At this time, the number of the first magnetic force generating means 30, the elastic providing means 40, the receiving groove 82 of the separator 80 and the second magnetic force generating means 50 provided in the same number as the number of the pressing plate (20) Can be increased or decreased according to the number of buttons of the button unit to be utilized. However, it is preferable to use two to twelve, respectively, as a volume control button (two), a direction button (four: see Fig. 6), a number and a special symbol button (12) of a mobile phone and the like.

The overall configuration of the haptic providing module 100 according to the present invention is almost the same as the case consisting of a plurality of external force response haptic providing device (1). Therefore, the following description will focus on characteristic configurations other than the overlapping configuration.

For the pressing plate 20, the first magnetic force generating means 30, the elasticity providing means 40, the second magnetic force generating means 50, the measuring means 60 and the control means 70 of the haptic providing module 100 The detailed description is replaced with the description in the external force response haptic providing apparatus 1 described above.

The separator 80 is a component for reducing the interference of the magnetic force between the first magnetic force generating means 30 and the second magnetic force generating means 50 adjacent to each other, the first magnetic force generating means 30 and the second magnetic force generating means It can be produced in a plate shape formed with a receiving groove 82 that can accommodate each 50. At this time, the receiving groove 82 is preferably formed to a size that does not occur in consideration of the deformation during one-way reciprocation of the elastic providing means (40). In addition, the separator 80 may be made of a magnetic shielding material so that each external force-responsive haptic providing device 1 can operate accurately without interfering with each other.

The control means 70 of the haptic providing module 100 independently of the power provided to the plurality of first and second magnetic force generating devices 30, 50 based on the strength of the external force measured by the measuring means 60, respectively. It is preferable to implement to control. This allows the user to receive local haptic feedback corresponding to the pressing position.

6 is a state diagram when the haptic providing module according to the present invention is used as a button unit of a portable terminal. As shown in FIG. 6, the button unit 210 of the portable terminal 200 according to the present invention may be used as an input device through which a user may input data, and a user may input haptic feedback corresponding to the user's input. Haptic provision module 100 that can provide to may be provided.

7 is a state diagram when the haptic providing module according to the present invention is used in the armored user input device. As shown in FIG. 7, the glove-type user input device 300 according to the present invention includes a glove 310, a haptic providing module 100, a position sensor (not shown), and the like. In this case, the gloves-type user input device 300 is provided with each of the haptic providing module 100 on one side of the glove corresponding to the finger end formed fingerprint, and the position sensor is provided on one side of the glove 310 so that the user can input data Can be used as an input device such as a mouse. In addition, the haptic feedback corresponding to the user's input may be provided to the end of the user's finger through the haptic providing module 100.

<Control Method of Heptic Providing Device>

Hereinafter, a control method of an external force response haptic providing apparatus using electromagnetic induction according to the present invention will be described with reference to the accompanying drawings. First, Figure 8 is a flow chart according to the control method of the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention, Figure 9a is an external force acting on the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention. Figure 9b is an operating state diagram, Figure 9b is an operating state diagram showing a state in which vibration occurs in accordance with the control method of the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention, Figure 9c is an electromagnetic induction according to the present invention It is an operating state diagram showing a state in which the rigidity is implemented according to the control method of the external force response haptic providing apparatus using the phenomenon.

As shown in FIG. 8, the control method of the external force-responsive haptic providing device 1 using the electromagnetic induction phenomenon according to the present invention may be approximately five steps in total.

The control method of the haptic providing apparatus 1 will be described based on the case where the first magnetic force generating means 30 is a permanent magnet and the elastic providing means 40 is the leaf spring 42 for convenience of description. In addition, the strength measurement of the external force will be described based on the measurement method using the correlation with the electrical signal which is the above-described induction current in the configuration of the haptic providing apparatus 1.

First, an external force is applied to the pressing plate 20 so that the pressing plate 20 and the first magnetic force generating means 30 move in one direction. In this step, as shown in FIG. 10A, the first magnetic force generating means 30 moves downward from the initial position (see FIG. 9A) according to the external force applied through the user's finger 2. At this time, the leaf spring 42 of the helical structure is deformed by the external force to act the elastic force (F bullet) to the pressing plate 20 (S100).

Next, the second magnetic force generating means 50 generates an electrical signal by the electromagnetic induction phenomenon caused by the movement of the first magnetic force generating means (30). In this step, the magnetic field inside the housing 10 changes as the permanent magnet, which is the first magnetic force generating means 30, moves. Accordingly, the second magnetic force generating means 50 positioned below the first magnetic force generating means 30 generates an electrical signal which is an induced current by electromagnetic induction even though no separate power is applied. This is because, as described above in the configuration of the haptic providing device 1, the second magnetic force generating means 50 is made in the form of a coil. The electrical signal generated by the second magnetic force generating means 50 is transmitted to the measuring means 60 connected to the terminal pins 52 located at both ends of the coil. At this time, since the elastic providing means 40 made of the leaf spring 42 of the helical structure is in an open state, no induced current is generated due to the magnetic field change caused by the reciprocation of the first magnetic force generating means 30.

On the other hand, as described above in the configuration of the haptic providing apparatus 1, in the case of the second magnetic force generating means 50 of the same size so that such an electrical signal can be accurately measured in a wide range, the second magnetic force generating means 50 It is preferable to increase the number of wires wound in the coil of unit length by thinning the thickness of the wires wound for the formation of (S200).

Next, the measuring means 60 receives the electrical signal generated by the second magnetic force generating means 50 to measure the strength of the external force. In this step, the measuring means 60 takes into account the external force in consideration of the correlation (proportionality) between the electrical signal generated according to the electromagnetic induction phenomenon and the external force in a state where a separate power source is not applied to the second magnetic force generating means 50. Measure

On the other hand, after applying a constant power to the second magnetic force generating means 50 so that the current flows constantly, when the user applies an external force to the pressing plate 20, the current flowing in the second magnetic force generating means 50 is the first The current value is changed due to the magnetic field change by the magnetic force generating means 30. In this case, the measuring means 60 may measure the strength of the external force in consideration of a constant correlation between the strength of the external force and the change of the current value flowing in the second magnetic force generating means 50.

In addition, the measuring means 60, when the second magnetic force generating means 50 is made of a combination of the coil formed separately from the external force detecting coil 54 and the magnetic force generating coil 56, the external force detecting coil 54 In step S300, the strength of the external force is measured by receiving the electrical signal generated by the controller.

Next, the control means 70 independently controls the power provided to the first magnetic force generating means 30 and the second magnetic force generating means 50 based on the measured intensity of the external force to provide haptic feedback to the user. .

In this step, the generation of the input processing request information by the measuring means 60 may be performed together with the provision of the haptic feedback by the control means 70. Through this, an input value corresponding to the haptic providing device 1 of the pressing plate 20 pressed by the user may be processed through a microcomputer (not shown) and then output through an output device such as a monitor. Can be provided.

In this step, the vibration haptic feedback may be divided into a method of providing rigid haptic feedback, which is a resistance to external force. Hereinafter, these will be described with reference to the accompanying drawings.

First, as shown in FIG. 9B, the vibration haptic feedback has a permanent magnet and attraction or repulsive force as the first magnetic force generating means 30 having a constant magnetic field (upper S pole, lower N pole, based on FIG. 9B). The control means 70 may be provided to the user by applying a pulsed power source having a period to the second magnetic force generating means 50 to repeat the action.

On the other hand, in the case where the first magnetic force generating means 30 is an electromagnet, the control means 70 constantly applies DC power to one of the first and second magnetic force generating means 30 and 50 and has a period in the other one. By applying pulsed power, the haptic feedback may be provided to the user by causing the attraction force or the repulsive force to repeatedly act between the first and second magnetic force generating means 30 and 50.

At this time, the frequency of the haptic providing apparatus 1 can be increased or decreased by adjusting the period of the pulse power supply. And when the second magnetic force generating means 50 is made of a combination of the coils separately formed by the external force sensing coil 54 and the magnetic force generating coil 56, the control means 70 to the magnetic force generating coil 56 It will control the power supply.

Second, as shown in FIG. 9C, the rigid haptic feedback is permanent as the first magnetic force generating means 30 in which the control means 70 forms a constant magnetic field (upper S pole, lower N pole, based on FIG. 9C). It can be provided to the user by applying an appropriate DC power source to the second magnetic force generating means 50 to act the magnet and the repulsive force (F chuck). At this time, if the intensity of the external force measured by the measuring means 60 is large, by increasing the strength of the DC power provided to the second magnetic force generating means 50 to generate a repulsive force to generate a strong haptic feedback corresponding to the external force Can be provided to the user.

When the external force (F) by the user's finger (2) acts in this way, the stiffness, which is a resistance force for preventing it, is basically the elastic force (F shot) by the leaf spring 42 and the first magnetic force generating means (30). It may be implemented by the repulsive force (F chuck) between the permanent magnet and the second magnetic force generating means (30). At this time, by adjusting the strength of the resistance through appropriate control of the repulsive force (F chuck), the user can be provided with a rigid haptic feedback of a hard feeling or soft feeling.

On the other hand, when the first magnetic force generating means 30 is an electromagnet, the control means 70 is independent of the power provided respectively so that the repulsive force acts properly between the first magnetic force generating means 30 and the second magnetic force generating means 50. By controlling the control to the user can provide a rigid haptic feedback of various sizes (S400).

Finally, the control means 70 controls the power applied to the first and second magnetic force generating means 30 and 50, respectively, in order to adjust the restoration speed of the pressing plate 20 to the initial position.

In order to control the recovery speed, the elastic force (restoration force) of the leaf spring 42 is preferably smaller than the maximum attraction force or maximum repulsive force acting between the first and second magnetic force generating means 30 and 50. This means that if the power applied to the first and second magnetic force generating means 30 and 50 is removed to restore the pressing plate 20, the pressing plate 20 is restored to the initial position by the elastic force of the leaf spring 42. Of course, the pressing plate 20 to stop and stop in the pressed position.

For example, after the pressing plate 20 is pressed by an external force of the user, the control unit 70 initializes the pressing plate 20 by controlling a power so that an appropriate repulsive force is applied between the first and second magnetic force generating means 30 and 50. You can quickly restore to the location.

In addition, the pressure plate 20 may be slowly restored to the initial position by controlling the power source or removing the applied power source so that an appropriate attraction force is applied between the first and second magnetic force generating means 30 and 50. At this time, the attraction force between the first and second magnetic force generating means (30, 50) is controlled to act less than the elastic force of the leaf spring 42, which is a restoring force.

On the other hand, if a strong attraction force is formed between the first and second magnetic force generating means (30, 50), despite the elastic force of the leaf spring 42 to restore the pressing plate 20 to the initial position, the pressing plate 20 in the pressed state It will be possible. The stop and stop release function of the pressing plate 20 may be usefully used in operation buttons (eg, MP3 play button, MP3 stop button, etc.) among the button unit 210 of the portable terminal 200.

When the pressing plate 20 is restored to the initial position through the control of the control means 70, the first magnetic force generating means 30 connected thereto is also restored to the original position. And the leaf spring 42 provided between the pressing plate 20 and the first magnetic force generating means 30 is restored to a flat state in a deformed state (S500).

(Control method of button click feeling)

Hereinafter, a control method for implementing a haptic of a button click feeling using the external force response type haptic providing apparatus 1 using electromagnetic induction according to the present invention will be described with reference to the accompanying drawings. First, FIG. 10 is a flowchart illustrating a button click feeling by using an external force response haptic providing apparatus using electromagnetic induction according to the present invention, and FIG. 11 is a graph showing a relationship between depth and force pressed when a button is clicked.

As shown in FIG. 10, the control method for implementing the haptic of the button click feeling using the external force response haptic providing apparatus 1 using the electromagnetic induction phenomenon according to the present invention may be approximately three steps.

First, an external force is applied to the pressing plate 20 to increase the resistance while the pressing plate 20 and the first magnetic force generating means 30 move in one direction to a predetermined depth. In this step, as shown in Figure 11, the increase in the resistance force due to the movement of the pressing plate 20 can be made sufficiently by the elastic force of the leaf spring 42, the deformation is increased as the downward movement of the pressing plate 20. However, if necessary, the control means 70 provides power to the second magnetic force generating means 50 such that a repulsive force acts between the permanent magnet which is the first magnetic force generating means 30 and the second magnetic force generating means 50. The resistance can be further increased. On the other hand, when the first magnetic force generating means 30 is an electromagnet, it is possible to provide an appropriate power source to the first and second magnetic force generating means (30, 50) so that the repulsive force acts on the electromagnet and the second magnetic force generating means (50). (S1000).

Next, the second step is a size smaller than the resistance force acting at the predetermined depth (A) while the pressing plate 20 and the first magnetic force generating means 30 is moved in one direction more than the predetermined depth (A) by the external force It is a step that is kept constant. To this end, the control means 70, for example, can reduce the overall resistance by removing the power provided to the first, second magnetic force generating means (30, 50) or by a slight attraction force.

However, in order to maintain a constant resistance force, the pressing plate 20 must offset the elastic force of the leaf spring 42 which is increased by the deformation as it moves downward. To this end, the control means 70 applies a power source so that a slight attraction force is applied between the first and second magnetic force generating means 30 and 50, and gradually increases the intensity of the applied power source to increase the attraction force. The increased elastic force of) can be offset (S2000).

Finally, the third step is a step in which the resistance force is increased while the pressing plate 20 and the first magnetic force generating means 30 move further in one direction than the depth at which the resistance force is kept constant by external force. In this step, when the pressing plate 20 moves downward beyond the depth B at which the resistive force is kept constant, the control means 70 controls to generate a rapidly increased resistive force. For example, the control means 70 may apply the maximum power applicable to the first and second magnetic force generating means 30 and 50 so that the repulsive force acts between the first and second magnetic force generating means 30 and 50. have. As a result, the maximum repulsive force acts between the first and second magnetic force generating means 30 and 50 to implement rigidity that strongly resists the external force of the user (S3000).

Through this three-step process, the user can be provided with a haptic of clicking buttons.

As described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meanings and equivalent concepts of the claims should be construed as being included in the scope of the present invention.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention, and therefore, the present invention is limited only to the matters described in the drawings. It should not be interpreted.

1 is an exploded perspective view of an external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention.

Figure 2 is a perspective view of the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention.

Figure 3a is a cross-sectional perspective view of the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention.

3B is a cross-sectional view when the second magnetic force generating means consists of an external force detecting coil and a magnetic force generating coil.

Figure 4 is an exploded perspective view of the haptic providing module according to the present invention.

5 is a combined perspective view of the haptic providing module according to the present invention.

6 is a state diagram used when the haptic providing module according to the present invention is used as a button unit of a portable terminal.

Figure 7 is a state of use when the haptic providing module according to the invention is used in the armored user input device.

8 is a flow chart according to the control method of the external force-responsive haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention.

Figure 9a is an operating state when the external force acts on the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention.

Figure 9b is an operating state diagram showing a state in which vibration occurs in accordance with the control method of the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention.

Figure 9c is an operating state showing the state in which the rigidity is implemented in accordance with the control method of the external force response haptic providing apparatus using the electromagnetic induction phenomenon according to the present invention.

10 is a flow chart for implementing a button click feeling using an external force response haptic providing apparatus using electromagnetic induction according to the present invention.

11 is a graph showing the relationship between the depth and the force pressed when the button is clicked.

<Explanation of symbols for the main parts of the drawings>

1: External force response haptic providing apparatus using electromagnetic induction phenomenon according to the present invention

2: finger

10: housing

20: pressure plate

30: first magnetic force generating means

40: elastic providing means

42: leaf spring

50: second magnetic force generating means

52: terminal pin

54: coil for external force detection

56: magnetic coil

58: magnetic shielding material

60: measuring means

70: control means

80: separator

82: receiving home

100: haptic provision module

200: portable terminal

210: button part

300: armored user input device

310: gloves

Claims (18)

A housing having an exterior and having a receiving space therein; A pressing plate provided at an upper portion of the housing and acting on an external force; First magnetic force generating means connected to a lower portion of the pressing plate and reciprocating in one direction in the housing according to the strength of the external force and generating magnetic force; Elastic providing means provided between the pressing plate and the first magnetic force generating means to provide an elastic force to the pressing plate; Second magnetic force generating means for generating an electrical signal generated by the electromagnetic induction according to the reciprocation of the first magnetic force generating means, the second magnetic force generating means provided in the housing so that the attraction force or repulsive force with the first magnetic force generating means ; Measuring means connected to the second magnetic force generating means and receiving the generated electrical signal to measure the strength of the external force; And And control means connected to the measuring means and the first and second magnetic force generating means to control power supplied to the first and second magnetic force generating means. The control means provides haptic feedback to the user by adjusting the attractive force or repulsive force acting between the first and second magnetic force generating means based on the strength of the external force, the external force response haptic using the electromagnetic induction phenomenon Device. The method of claim 1, The first magnetic force generating means is an external force response haptic providing device using an electromagnetic induction phenomenon, characterized in that the permanent magnet or electromagnet. The method of claim 1, The elastic providing means is an external force-responsive haptic providing device using an electromagnetic induction phenomenon, characterized in that the soft elastic rubber membrane, synthetic resin film or helical leaf spring. The method of claim 1, The second magnetic force generating means is an external force response type using an electromagnetic induction phenomenon, characterized in that the first magnetic force generating means is formed along the inner surface of the housing so that the first magnetic force generating means can be inserted into the central region of the second magnetic force generating means. Haptic provision device. The method of claim 4, wherein The coil of the second magnetic force generating means, An external force sensing coil generating an electrical signal by an electromagnetic induction phenomenon in accordance with the reciprocation of the first magnetic force generating means; And External force response haptic providing apparatus using an electromagnetic induction phenomenon comprising a; a magnetic force generating coil for generating a magnetic force so that the first magnetic force generating means and the attraction force or repulsive force can act. The method of claim 1, The control means, In order to provide the vibration haptic feedback to the user, the first and second magnetic force generating means by applying a constant DC power to one of the first, second magnetic force generating means and a pulse power having a period to the other External force-responsive haptic providing device using an electromagnetic induction phenomenon characterized in that the vibration is generated by the attraction or repulsive force to the liver. The method of claim 1, The control means, External force response type haptic using electromagnetic induction phenomena characterized in that the stiffness of the resistance to the external force is implemented by independently controlling the power provided to the first and second magnetic force generating means according to the measured external force strength Device. The user can input data by arranging a plurality of external force response haptic providing devices using electromagnetic induction according to any one of claims 1 to 7, and provide the user with haptic feedback corresponding to the input. Haptic provision module, characterized in that. The method of claim 8, The haptic providing module, A plurality of pressing plates on which external forces act; First magnetic force generating means connected to a lower portion of the pressing plate and reciprocating in one direction according to the strength of the external force and generating a magnetic force, and having the same number as the number of the pressing plates; Elastic providing means provided between the plurality of pressing plates and the first magnetic force generating means, respectively, to provide elastic force to the pressing plate; A plate-shaped separator having receiving grooves for receiving the first magnetic force generating means, respectively, to reduce interference of the magnetic force between the first magnetic force generating means; A second magnetic force is generated on the inner surface of the receiving groove so as to generate an electrical signal by the electromagnetic induction phenomenon according to the reciprocation of the first magnetic force generating means, the inner surface of the receiving groove so that the attraction force or the repulsive force acts with the first magnetic force generating means Generating means; Measuring means connected to the second magnetic force generating means and receiving the generated electrical signal to measure the strength of the external force; And And control means connected to the measuring means, the first and second magnetic force generating means, and controlling the power supplied to the first and second magnetic force generating means based on the measured intensity of the external force. Haptic provision module. The method of claim 9, The haptic provision module, characterized in that the pressing plate, the first magnetic force generating means, the elasticity providing means, the receiving groove and the second magnetic force generating means are each composed of two to four. A portable terminal comprising a haptic providing module according to claim 8 as a button unit, so that a user can input data and provide haptic feedback corresponding to the input to the user. A haptic providing module according to claim 8 is provided on each side of the glove corresponding to the finger-fingered finger end, so that the user can input data, and can provide the user with haptic feedback corresponding to the input. Armored user input device characterized in that. In the control method of the external force-responsive haptic providing apparatus using the electromagnetic induction phenomenon according to any one of claims 1 to 7, An external force is applied to the pressing plate to move the pressing plate and the first magnetic force generating means in one direction; Generating, by the second magnetic force generating means, an electrical signal by an electromagnetic induction phenomenon caused by the movement of the first magnetic force generating means; Measuring means for measuring the intensity of the external force by receiving the generated electrical signal; And And controlling means to independently control power supplied to the first magnetic force generating means and the second magnetic force generating means based on the measured intensity of the external force to provide haptic feedback to the user. A control method of an external force response haptic providing device using an induction phenomenon. The method of claim 13, Providing the haptic feedback, In order to provide a vibration haptic feedback to a user, a DC power is constantly applied to one of the first and second magnetic force generating means, and a pulse power having a period is applied to the other, so that the first and second magnetic force generating means A control method of an external force-responsive haptic providing device using electromagnetic induction, characterized in that to generate a vibration by causing the attraction or repulsive force to act repeatedly. The method of claim 13, Providing the haptic feedback, Providing an external force response haptic using an electromagnetic induction phenomenon, characterized in that the stiffness that is resistant to the external force is implemented by independently controlling the power provided to the first and second magnetic force generating means according to the measured external force strength Control method of the device. The method of claim 15, When the stiffness is implemented, the resistance force, In the elastic force of the elastic providing means, The control method of the external force-responsive haptic providing device using an electromagnetic induction phenomenon, characterized in that it further comprises a repulsive force between the first and second magnetic force generating means. The method of claim 13, And controlling the power applied to the first and second magnetic force generating means, respectively, to control the restoration speed to the initial position of the pressing plate by the control means. Control method of external force response haptic providing device. In the control method of the external force-responsive haptic providing apparatus using the electromagnetic induction phenomenon according to any one of claims 1 to 7, A first step in which an external force is applied to the pressing plate to increase the resistance while the pressing plate and the first magnetic force generating means move in one direction to a predetermined depth; A second step in which the resistive force is constantly maintained at a size smaller than the resistive force acting at the predetermined depth while the pressing plate and the first magnetic force generating means are moved further in one direction by the external force; And And a third step of increasing the resistive force while the pressing plate and the first magnetic force generating means move further in one direction than the depth at which the resistive force is kept constant by an external force. A control method of an external force-responsive haptic providing device using electromagnetic induction, characterized in that to provide a user a haptic of a button click.

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