KR20240058391A - Actuator, output device and input device - Google Patents

Abstract

It provides actuators, input devices, and output devices that enable rapid operation and have improved energy efficiency.
The actuator according to one aspect of the present invention includes a fixed magnet portion configured to have polar directions on one side and the other side arranged in different directions, and is disposed inside the fixed magnet portion, and the direction of polarity changes according to application of a current to It includes a moving magnet part configured to move in one direction or the other direction of the fixed magnet part, and a pin part connected to one end of the moving magnet part and configured to move together with the moving magnet part.

Description

Actuator, output device and input device {ACTUATOR, OUTPUT DEVICE AND INPUT DEVICE}

The present invention relates to actuators, output devices, and input devices, and more specifically, to actuators, input devices, and output devices that enable rapid operation and have improved energy efficiency.

Actuators are installed in recent portable electronic devices, virtual reality devices, training simulators, etc. to provide various and vivid tactile feedback to users.

In particular, as the use of smart devices such as smartphones has recently increased, normal people can easily access a variety of information, but visually impaired people have difficulty using these smart devices, further widening the information gap. Among the above actuators, the Braille actuator is widely used to assist visually impaired people in collecting information.

One of the new actuators that has been recently attempted is a method using solenoids. In this method, information can be output to the user by using a permanent magnet and an electromagnet to apply current to an electromagnet installed around a protrusion (e.g. a pin) to be protruded, causing an attractive or repulsive force to be applied between the electromagnet and the permanent magnet. there is.

However, in the case of this type of actuator, in some cases, sufficient magnetic attraction is not applied between the permanent magnet and the electromagnet, so not only is it difficult to raise the protrusion quickly, but also continuous energy must be consumed to maintain the operating state of the protrusion. There is.

The present invention was conceived to solve the above-described problems, and its purpose is to provide an actuator, input device, and output device that can be driven quickly and has improved energy efficiency.

However, the technical problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention described below.

The actuator according to one aspect of the present invention includes a fixed magnet portion configured to have polar directions on one side and the other side arranged in different directions, and is disposed inside the fixed magnet portion, and the direction of polarity changes according to application of a current to It includes a moving magnet part configured to move in one direction or the other direction of the fixed magnet part, and a pin part connected to one end of the moving magnet part and configured to move together with the moving magnet part.

Preferably, the actuator may further include a coil portion disposed inside the fixed magnet portion and configured to surround the moving magnet portion.

Preferably, the fixed magnet unit may include a first fixed magnet and a second fixed magnet disposed closer to the pin unit than the first fixed magnet and having a polarity direction different from that of the first fixed magnet.

Preferably, the second fixed magnet may be configured to have a larger size than the first fixed magnet.

Preferably, the actuator may further include a first core disposed below the first fixed magnet and a second core disposed above the second fixed magnet.

Preferably, the moving magnet unit may be disposed between the first core and the second core in a vertical direction.

Preferably, the actuator further includes a third core disposed between the first fixed magnet and the second fixed magnet in the vertical direction, and the moving magnet portion is disposed inside the third core in the radial direction. You can.

Preferably, the second core may be disposed between the pin portion and the second fixed magnet.

Preferably, when the pin portion is pressed downward while the movable magnet portion is moved upward and no current is applied, the magnetic field formed between the movable magnet portion and the first fixed magnet and the second fixed magnet In order to minimize the magnetic resistance of the magnetic path, the moving magnet can be returned to the top.

Preferably, a gap of a predetermined height may be formed between the first fixed magnet and the first core.

Additionally, the output device according to one aspect of the present invention includes at least one actuator according to one aspect of the present invention as described above.

Additionally, the input device according to one aspect of the present invention includes at least one actuator according to one aspect of the present invention as described above.

An actuator according to another aspect of the present invention is configured such that the polarity directions of one side and the other side are arranged in different directions, a plurality of fixed magnet parts arranged according to a certain rule, and a plurality of fixed magnet parts arranged according to the certain rule. A plurality of moving magnet parts are disposed between the fixed magnet parts and are configured to change the direction of polarity according to the application of current and move in one direction or the other direction of the fixed magnet part, and are connected to one end of the moving magnet part, and the moving magnet part and It includes a pin portion configured to be moved together.

Preferably, the plurality of fixed magnet parts arranged around the plurality of moving magnet parts may be arranged at equal intervals at the upper left, lower left, upper right, and lower right with respect to the moving magnet part.

Preferably, the plurality of fixed magnet units have a rectangular parallelepiped flat cross-sectional shape and may be arranged in a form inclined at a predetermined angle relative to the horizontal or vertical direction.

According to an embodiment of the present invention, the pin portion can be moved up and down by applying a current only for a time long enough to change the direction of the polarity of the moving magnet portion, so the driving time of the actuator can be further shortened.

In addition, when an external force acts, the operating state of the pin portion can be maintained even if no additional current flows, thereby minimizing the power consumption of the actuator.

In addition, various other additional effects can be achieved by various embodiments of the present invention. These various effects of the present invention will be described in detail in each embodiment, or descriptions of effects that can be easily understood by those skilled in the art will be omitted.

1 is a diagram showing an actuator according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the actuator of Figure 1.
FIG. 3 is a diagram for explaining the detailed structure of the actuator of FIG. 1.
4 to 7 are diagrams for explaining the operating state of the actuator of FIG. 1.
Figure 8 is a diagram showing an exemplary hysteresis curve for explaining the characteristics of a magnet related to the actuator of the present invention.
Figure 9 is a diagram showing an actuator according to a second embodiment of the present invention.
Figure 10 is a diagram showing an actuator according to a third embodiment of the present invention.
Figure 11 is a diagram showing an actuator according to a fourth embodiment of the present invention.
12 to 13 are simulation data showing the magnetic field path generated between the moving magnet portion and the fixed magnet portion in the actuator according to an embodiment of the present invention.
14 to 19 are plan cross-sectional views of actuators according to various embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor should appropriately use the concept of terms to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle of definability.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not entirely represent the technical idea of the present invention, so at the time of filing the present application, various options that can replace them are available. It should be understood that equivalents and variations may exist.

FIG. 1 is a diagram showing an actuator 10 according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the actuator 10 of FIG. 1, and FIG. 3 explains the detailed structure of the actuator 10 of FIG. 1. This is a drawing for this purpose.

In an embodiment of the present invention, the may mean a vertical direction perpendicular to both the X-axis direction and the Y-axis direction.

Referring to FIGS. 1 to 3 , the actuator 10 according to an embodiment of the present invention may include a fixed magnet unit 100, a moving magnet unit 200, and a pin unit 300.

The fixed magnet unit 100 may be configured so that the polarity directions of one side and the other side are arranged in different directions. As an example, the fixed magnet unit 100 may include neodymium (NdFeB), a type of hard magnet material. In addition, the fixed magnet unit 100 has a high coercivity (Coercivity, ) and can be configured to make it difficult for the direction of polarity to be changed by an external magnetic field. The detailed configuration of the fixed magnet unit 100 will be described in more detail in the related description below.

The movable magnet unit 200 may be disposed inside the fixed magnet unit 100. This movable magnet unit 200 may be located inside the fixed magnet unit 100 in the radial direction. As an example, the moving magnet unit 200 may include AlNiCo, a type of soft magnetic material. Additionally, the moving magnet unit 200 may be configured to easily change the direction of polarity by an external magnetic field. This will be explained in more detail in the related description below.

The pin unit 300 may be configured to be connected to one end (eg, top) of the moving magnet unit 200. As an example, the pin portion 300 may be made of a non-magnetic material. Additionally, the pin portion 300 may include a connection portion 310 connected to one end of the moving magnet portion 200.

Meanwhile, the actuator 10 may further include a housing (not shown) configured to accommodate the fixed magnet unit 100, the moving magnet unit 200, and the pin unit 300 therein. The housing may be made of a non-magnetic material to prevent electrical interference with components accommodated therein.

4 to 7 are diagrams for explaining the operating state of the actuator of FIG. 1.

Referring to FIGS. 4 to 7 along with FIGS. 1 to 3, the movable magnet unit 200 is configured to change the direction of polarity according to the application of current and move to one side or the other side of the fixed magnet unit 100. It can be.

Specifically, a current applicator (not shown) may be connected to the actuator 10. This current applicator can apply current to the actuator 10. Here, the current applicator applies a current to the actuator 10 to induce the magnetic field flowing inside the moving magnet unit 200 to become stronger, thereby changing the polarity direction of the moving magnet unit 200.

Accordingly, the movable magnet unit 200 may be configured to move in one direction or the other direction of the fixed magnet unit 100.

Specifically, one side of the fixed magnet unit 100 is a lower fixed magnet and may be the first fixed magnet 110, which will be described later. At this time, the polarity direction of one side of the fixed magnet unit 100 may not be changed by the magnetic field generated according to the application of current by the current applicator. As an example, one side of the fixed magnet unit 100 may represent an S pole on the upper side and an N pole on the lower side.

Additionally, the other side of the fixed magnet unit 100 may be a second fixed magnet 120, which will be described later, as an upper fixed magnet. At this time, the polarity direction of the other side of the fixed magnet unit 100 may not be changed by the magnetic field generated according to the application of current by the current applicator. As an example, the other side of the fixed magnet unit 100 may represent the N pole on the upper side and the S pole on the lower side.

For example, when current is applied to the actuator 10 in the state of FIG. 4, a strong magnetic field is formed inside the coil unit 400, and the moving magnet unit 200 is moved by the strong magnetic field formed inside the coil unit 400. ) As the magnetic field flowing inside becomes stronger, the polarity direction of the moving magnet unit 200 may change from the S pole to the N pole, as shown in FIG. 5.

At this time, as shown in FIG. 6, magnetic attraction may act between the movable magnet unit 200 whose polarity direction is changed and the other side of the fixed magnet unit 100. Additionally, a repulsive force may act between one side of the movable magnet unit 200 whose polarity direction is changed and the fixed magnet unit 100. Accordingly, the movable magnet unit 200 can move in the other direction of the fixed magnet unit 100.

Meanwhile, in the state of FIG. 6, when current is applied to the actuator 10 again, the magnetic field flowing inside the moving magnet unit 200 becomes stronger due to the strong magnetic field formed inside the coil unit 400, and as shown in FIG. 7 As shown, the polarity direction of the moving magnet unit 200 can be instantly changed from the N pole to the S pole.

At this time, referring again to FIG. 4, magnetic attraction may act between one side of the moving magnet unit 200 whose polarity direction has been changed and one side of the fixed magnet unit 100. Additionally, a repulsive force may act between the movable magnet unit 200 whose polarity direction is changed and the other side of the fixed magnet unit 100. Accordingly, the movable magnet unit 200 can move in one direction of the fixed magnet unit 100.

That is, the moving magnet unit 200 can move in the vertical direction with its polarity changing depending on the current applied to the actuator 10, as shown in FIGS. 4 to 7 .

Additionally, the pin unit 300 may be configured to move together with the moving magnet unit 200. That is, the pin unit 300 can move in the vertical direction together with the moving magnet unit 200 according to the vertical movement of the moving magnet unit 200 by the current applied to the actuator 10.

As shown in FIG. 6 , in a state where magnetic attraction is applied between the movable magnet unit 200 and the other side of the fixed magnet unit 100, the pin unit 300 may be moved upward. At this time, the fin portion 300 may be exposed to the outside through a hole formed in the cover (B). As an example, the cover B may constitute the upper part of the housing described above.

Meanwhile, in the state of FIG. 6, the movable magnet unit 200 maintains its polarity direction changed, so even if an external force acts on the pin unit 300 in the downward direction, there is a gap between the movable magnet unit 200 and the fixed magnet unit 100. The moving magnet unit 200 may be moved upward again by the magnetic attraction continuously acting on. That is, even if an external force presses the fin unit 300 downward in the state of FIG. 6, the fin unit 300 can be moved upward again.

At this time, a flange portion 320 extending in the radial direction may be provided on the lower side of the fin portion 300. This flange portion 320 may contact the lower surface of the cover B when the pin portion 300 moves upward. Accordingly, it is possible to prevent the fin unit 300 from being separated from the outside of the cover (B) when the fin unit 300 moves upward.

In addition, in the state of FIG. 4, the movable magnet unit 200 maintains its polarity direction changed, so even if an external force acts in the direction of pulling the pin unit 300 upward, the movable magnet unit 200 and the fixed magnet unit ( The moving magnet unit 200 may be moved downward again by the magnetic attraction that continuously acts between the magnets (100). That is, even if an external force acts to cause the fin portion 300 to protrude upward and out of the cover B in the state of FIG. 4, the fin portion 300 can be moved downward again.

Additionally, at least one actuator 10 may be provided to form an output device.

The output device uses a configuration in which the pin unit 300 of the actuator 10 moves upward, and may be a device that conveys the sensation of movement of the pin unit 300 to the user. By way of example, the output device may be a braille display, a braille pad, a kiosk, a tactile display, etc.

According to this embodiment of the present invention, the pin unit 300 can be moved in the vertical direction by applying a current only for a time long enough to change the direction of the polarity of the moving magnet unit 200, so that the actuator 10 is driven. Time can be shorter.

In addition, when an external force acts, the operating state of the pin unit 300 can be maintained even without additional current flowing, so power consumption of the actuator 10 can be minimized.

Figure 8 is a diagram showing an exemplary hysteresis curve for explaining the characteristics of a magnet related to the actuator 10 of the present invention.

Referring again to FIGS. 2 to 7 , the actuator 10 may further include a coil portion 400.

The coil unit 400 may be disposed inside the fixed magnet unit 100 and configured to surround the moving magnet unit 200. At this time, the coil unit 400 can be accommodated inside the housing described above. As an example, the coil unit 400 may include a solenoid coil.

The coil portion 400 and the moving magnet portion 200 configured to surround the coil portion 400 may have a cylindrical structure extending along the longitudinal direction, but are not limited thereto. For example, the moving magnet unit 200 may be made of a rectangular parallelepiped or polyhedron that has a square or other polygonal cross-section and extends in the longitudinal direction, and the coil unit 400 is a shape of the moving magnet unit 200. Since it must have an inner circumferential surface corresponding to the outer circumferential surface, it can be formed in the same form as the moving magnet unit 200.

Additionally, the above-described current applicator may be connected to the coil unit 400. At this time, a magnetic field may be generated between the fixed magnet unit 100 and the moving magnet unit 200 by the current applied to the coil unit 400 from the current applicator.

Since the coil unit 400 is configured to surround the moving magnet unit 200 in this way, when current is applied to the coil unit 400, the magnetic field within the moving magnet unit 200 can be generated more strongly.

Meanwhile, referring to the hysteresis curve of FIG. 8, when a current is applied to the coil unit 400, an external magnetic field greater than the coercive force of the moving magnet unit 200 may act due to the magnetic field generated by the coil unit 400. there is. In addition, an external magnetic field smaller than the coercive force of the fixed magnet unit 100 is formed in the fixed magnet unit 100 by the magnetic field generated by the coil unit 400, thereby causing the movable magnet unit 200 to The direction of polarity can be easily changed.

On the other hand, when the application of current to the coil unit 400 is stopped, no matter where the moving magnet unit 200 is located in the vertical direction within the coil unit 400, the fixed magnet unit 100 and the moving magnet unit ( Since the magnetic field generated between the magnetic fields 200) is smaller than the coercive force of the moving magnet section, the polarity direction of the moving magnet section 200 can be maintained without changing. Accordingly, in FIGS. 4 and 6 described above, the movable magnet unit 200 can maintain the polarity direction changed.

Referring again to FIGS. 1 to 7 , the fixed magnet unit 100 may include a first fixed magnet 110 and a second fixed magnet 120.

As an example, the first fixed magnet 110 may have an S pole on its upper side and an N pole on its lower side.

The second fixed magnet 120 may be disposed closer to the pin portion 300 than the first fixed magnet 110. Additionally, the second fixed magnet 120 may have a different polarity direction from the first fixed magnet 110. As an example, the second fixed magnet 120 may have an N pole on its upper side and an S pole on its lower side.

According to this implementation configuration, the reciprocating movement of the moving magnet unit 200 can be more easily performed according to the current applied to the coil unit 400 described above.

Referring again to FIGS. 1 to 7 , the actuator 10 may further include a first core (C1) and a second core (C2). As an example, the first core C1 and the second core C2 may include a magnetic metal material (eg, iron).

The first core C1 may be disposed below the first fixed magnet 110.

The second core C2 may be disposed on the second fixed magnet 120.

In this way, the first core C1 and the second core C2 made of a magnetic material can assist in generating a strong magnetic field between the fixed magnet unit 100 and the moving magnet unit 200.

Preferably, when the pin portion 300 is pressed downward while the movable magnet portion 200 is moved upward and no current is applied, the movable magnet portion 200 and the first fixed magnet In order to minimize the magnetic resistance of the magnetic path formed between 110 and the second fixed magnet 120, the moving magnet portion 200 may be returned to the upper position.

Specifically, as shown in FIG. 6, when a magnetic field is generated between the second fixed magnet 120 and the moving magnet unit 200, the second core C2, which is a magnetic material, is connected to the moving magnet unit 200 and the second core C2. The magnetic field path between the fixed magnets 120 can be induced to be strong. Accordingly, the magnetic attraction acting between the moving magnet unit 200 and the second fixation 120 in the state of FIG. 6 can be stably maintained. In addition, even if no current is applied in the state of FIG. 6 and an external force pressing the pin portion 300 is applied downward, the second core C2, which is a magnetic material, is connected to the second fixed magnet 120 and the moving magnet portion 200. It induces the generation of a magnetic field between the two to be maintained, and in particular, the magnetic field generated from the first fixed magnet 110 and the second fixed magnet 120, whose positions are fixed, and the moving magnet unit 200 that moves linearly, forms a magnetic field path. According to the nature of minimizing the magnetic resistance of (see FIGS. 12 to 13), the moving magnet unit 200 is returned to its original position upward even if no current is applied, and accordingly, the pin unit 300 moves upward again. It can be.

And, as shown in FIG. 4, when a magnetic field is generated between the first fixed magnet 110 and the moving magnet unit 200, the first core C1, which is a magnetic material, is connected to the moving magnet unit 200 and the first fixed magnet unit 200. The magnetic field path between the magnets 110 can be induced to be strong. Accordingly, the magnetic attraction acting between the moving magnet unit 200 and the first fixed magnet 110 in the state of FIG. 4 can be stably maintained. In addition, even if an external force acts in the direction of pulling the pin unit 300 upward in the state of FIG. 4, the first core C1, which is a magnetic body, generates a magnetic field between the first fixed magnet 110 and the moving magnet unit 200. Since this is maintained, the fin portion 300 can be moved downward again.

According to this configuration of the first core (C1) and the second core (C2), not only can the actuator 10 be driven more quickly and stably, but also the operating state of the pin unit 300 is improved even when an external force is applied. Since it can be reliably maintained, the energy efficiency of the actuator 10 can be further improved.

In particular, the moving magnet unit 200 may be disposed between the first core C1 and the second core C2 in the vertical direction. In the process of moving the moving magnet unit 200 in the vertical direction according to the current applied to the coil unit 400 as shown in FIGS. 4 to 7, the upper surface of the first core C1 or the second core C2 ) can be combined with magnetic force on the underside of the.

Specifically, as shown in FIG. 6, when a magnetic field is generated between the second fixed magnet 120 and the moving magnet unit 200, the upper surface of the moving magnet unit 200 is a magnetic field of the second core C2. It can be joined by magnetic force on the lower surface.

In addition, as shown in FIG. 4, when a magnetic field is generated between the first fixed magnet 110 and the moving magnet unit 200, the lower surface of the moving magnet unit 200 is the upper surface of the first core C1, which is a magnetic body. can be combined by magnetic force.

According to this implementation configuration, in the process of moving the moving magnet unit 200 in the vertical direction, the moving magnet unit 200 is coupled to the first core C1 or the second core C2 by magnetic force, so that the pin unit ( The operating state of 300) can be maintained more stably.

Additionally, the actuator 10 may further include a third core C3. As an example, the third core C3 may include a magnetic metal material (eg, iron).

The third core C3 may be disposed between the first fixed magnet 110 and the second fixed magnet 120 in the vertical direction. At this time, the moving magnet unit 200 may be disposed inside the third core C3 in the radial direction. That is, the third core C3 is disposed between the first fixed magnet 110 and the second fixed magnet 120 and is connected to the first fixed magnet 110 or the second fixed magnet 120 and the moving magnet unit 200. It can additionally assist in the generation of magnetic fields between

According to this implementation configuration, a stronger magnetic field can be generated between the fixed magnet unit 100 and the moving magnet unit 200.

Referring again to FIGS. 1 to 7 , the second core C2 may be disposed between the pin portion 300 and the second fixed magnet 120. This second core (C2), as shown in FIG. 4, when magnetic attraction is generated between the first fixed magnet 110 and the moving magnet unit 200 and the pin unit 300 moves downward, It may come into contact with the flange portion 320 formed on the lower side of the fin portion 300.

Figure 9 is a diagram showing the actuator 12 according to the second embodiment of the present invention.

Since the actuator 12 according to the present embodiment is similar to the actuator 10 of the previous embodiment, redundant description of components that are substantially the same or similar to the previous embodiment will be omitted, and hereinafter, the same as the previous embodiment will be described. Let’s take a look at the differences.

Referring to FIG. 9, in the actuator 12, the second fixed magnet 120 may be configured to have a larger size than the first fixed magnet 110. As an example, the second fixed magnet 120 may have a greater height than the first fixed magnet 110. However, it is not limited to this, and the second fixed magnet 120 may have a larger width than the first fixed magnet 110 and may have a larger volume than the first fixed magnet 110.

Accordingly, the second fixed magnet 120 located above the first fixed magnet 110 may have a greater magnetic force than the first fixed magnet 110. Therefore, a magnetic field and magnetic attraction greater than the magnetic field and magnetic attraction acting between the first fixed magnet 110 and the moving magnet unit 200 are generated between the second fixed magnet 120 and the moving magnet unit 200. It can work. That is, in the process of moving the movable magnet unit 200 in the vertical direction, the force by which the pin unit 300 moves in the upward direction may be greater than the force by which the pin unit 300 moves in the downward direction. Therefore, the fin portion 300 can move more strongly when moving in the upward direction.

Alternatively, in the actuator 12 of this embodiment, the component of the second fixed magnet 120 itself may be formed of a material with stronger magnetic force than that of the first fixed magnet 110.

According to the actuator 12 according to this embodiment, the pin unit 300 can move strongly when moving in the upward direction, so when the actuator 12 is used as an output device, the sensation of movement of the pin unit 300 is felt more immediately. It can be passed on to the user.

Figure 10 is a diagram showing the actuator 14 according to the third embodiment of the present invention.

Since the actuator 14 according to the present embodiment is similar to the actuator 10 of the previous embodiment, redundant description of components that are substantially the same or similar to the previous embodiment will be omitted, and hereinafter, the same as the previous embodiment will be described. Let’s take a look at the differences.

Referring to FIG. 10, in the actuator 14, a gap of a predetermined height may be formed between the first fixed magnet 110 and the first core C1. That is, the first fixed magnet 110 and the first core C1 may be configured to be spaced apart in the vertical direction.

According to this configuration, while the moving magnet unit 200 moves in the vertical direction, the force by which the pin unit 300 moves in the downward direction may be smaller than the force by which the pin unit 300 moves in the upward direction. Accordingly, the fin portion 300 can move more strongly when moving in the upward direction.

Alternatively, in the actuator 14 of this embodiment, a gap of a predetermined height may be formed between the first fixed magnet 110 and the third core C3. In addition, a gap of a predetermined height may be formed between the moving magnet unit 200 and the first core C1.

According to the actuator 14 according to this embodiment, the pin portion 300 can move strongly when moving in the upward direction, so when the actuator 14 is used as an output device, the sensation of movement of the pin portion 300 is felt more immediately. It can be passed on to the user.

Figure 11 is a diagram showing the actuator 16 according to the fourth embodiment of the present invention.

Since the actuator 16 according to the present embodiment is similar to the actuator 10 of the previous embodiment, redundant description of components that are substantially the same or similar to the previous embodiment will be omitted, and hereinafter, the same as the previous embodiment will be described. Let’s take a look at the differences.

Referring to FIG. 11, at least one actuator 16 may be provided to form an input device.

Specifically, in the actuator 16, a sensor S may be disposed on the upper surface of the first core C1. The sensor S may be placed inside the coil unit 400 in the radial direction as shown in FIG. 10 . In particular, the sensor S may be disposed on the lower side of the coil unit 400. However, the sensor S is not limited to this, and may be placed on the upper side of the coil unit 400, the lower part of the cover B, or the lower part of the first core C1.

This sensor (S) generates magnetic attraction and a magnetic field between the first fixed magnet 110 and the moving magnet unit 200, and when the moving magnet unit 200 moves in the downward direction, the moving magnet unit 200 may come into contact with the underside of the That is, when the moving magnet unit 200 is in contact with the sensor S, the pin unit 300 can be viewed as being moved in the downward direction.

Therefore, the actuator 16 according to this embodiment is operated using contact or non-contact information about the sensor S of the moving magnet unit 200, which is transmitted to a separate processor (not shown) through the sensor S. It can be used as an input device. As an example, the actuator 16 according to this embodiment can be used as an input device that inputs a sense according to the movement of the pin unit 300 to separate hardware (not shown, e.g., a computer, etc.).

14 to 19 are plan cross-sectional views of actuators according to various embodiments of the present invention.

The actuator 10 according to various embodiments of the present invention is described for each drawing as follows.

First, in the plan cross-sectional view of the actuator 10 shown in FIG. 14, a plate-shaped fixed magnet portion 100 with a plurality of array-type holes may be formed, and a plurality of holes may be formed with a preset arrangement and spacing. Can be formed regularly. A moving magnet unit 200 may be inserted into each of the plurality of holes, and a coil unit 400 may be arranged to surround the moving magnet unit 200. In this way, it can be used as an input device that transmits various input signals through the actuator 10, which has a plurality of pin parts 300 connected to the upper part of the moving magnet part 200.

The actuator 10 shown in FIG. 15 may have a plurality of cylindrical fixed magnet parts 100 arranged according to certain rules, and a moving magnet part 200 is disposed between the plurality of fixed magnet parts 100. , the coil unit 400 may be arranged to surround the moving magnet unit 200. In this way, even when the fixed magnet portion 100 is not formed along the periphery of the moving magnet portion 200 and the coil portion 400, and a plurality of fixed magnet portions 100 are disposed along the periphery at a predetermined distance apart, the above-described actuator (10) ) operation is possible.

In FIG. 16, the fixed magnet unit 100 shown in FIG. 15 is formed in a cylindrical shape with a hole formed therein so that each moving magnet unit 200 and the coil unit 400 can be inserted and installed, and each fixed magnet unit A plurality of actuators 10 consisting of 100 and a moving magnet unit 200 may transmit various input signals.

In addition, in FIGS. 17 to 19, a plurality of moving magnet parts 200 and a coil part 400 surrounding the same may be arranged side by side according to a certain rule, and the moving magnet parts 200 may be arranged side by side at predetermined angles on both sides. The fixed magnet units 100 may be arranged at a distance apart. Here, as shown in FIG. 17, the fixed magnet portion 100 may be disposed with fixed magnet portions 100 extending in the longitudinal direction on both sides of a plurality of movable magnet portions 200 arranged side by side. In 18, the fixed magnet unit 100 of FIG. 17 may be formed separately rather than extending in the longitudinal direction and may be arranged side by side at the upper left, lower left, upper right, and lower right with respect to the moving magnet unit 200, In FIG. 19, the fixed magnet portions 100 shown in FIG. 18 may be arranged side by side in a form inclined at a predetermined angle.

In this way, the fixed magnet unit 100 and the moving magnet unit 200 can be used as an input device that transmits various input signals through the actuator 10 in various arrangements and shapes.

As described above, although the present invention has been described with limited examples and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following will be understood by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalence of the patent claims to be described.

Meanwhile, in the present invention, terms indicating directions such as up, down, left, right, front, and back are used, but these terms are only for convenience of explanation and may vary depending on the location of the target object or the location of the observer. It is obvious to those skilled in the art that this can be done.

10, 12, 14, 16: Actuator
100: fixed magnet part
110: first fixed magnet
120: second fixed magnet
200: moving magnet part
300: Pin part
400: coil part
C1: first core
C2: second core
C3: Third core

Claims (14)

A fixed magnet unit configured so that the polarity directions of one side and the other side are arranged in different directions;
a movable magnet unit disposed inside the fixed magnet unit and configured to change the direction of polarity according to application of electric current and move in one direction or the other direction of the fixed magnet unit; and
An actuator comprising a pin portion connected to one end of the moving magnet portion and configured to move together with the moving magnet portion. According to clause 1,
An actuator further comprising a coil portion disposed inside the fixed magnet portion and configured to surround the moving magnet portion. According to clause 1,
The fixed magnet part,
a first stationary magnet; and
An actuator comprising a second fixed magnet disposed closer to the pin portion than the first fixed magnet and having a polarity direction different from that of the first fixed magnet. According to clause 3,
a first core disposed below the first fixed magnet; and
An actuator further comprising a second core disposed on an upper portion of the second fixed magnet. According to clause 4,
The moving magnet part,
An actuator disposed between the first core and the second core in a vertical direction. According to clause 4,
Further comprising a third core disposed between the first fixed magnet and the second fixed magnet in an upward and downward direction,
The moving magnet part,
An actuator, characterized in that disposed inside the third core in the radial direction. According to clause 4,
The second core is,
An actuator characterized in that it is disposed between the pin portion and the second fixed magnet. According to clause 6,
When the movable magnet part is moved upward and no current is applied, and the pin part is pressed downward,
An actuator, wherein the moving magnet part is returned to the upper position in order to minimize the magnetic resistance of a magnetic path formed between the moving magnet part and the first fixed magnet and the second fixed magnet. According to clause 4,
Between the first fixed magnet and the first core,
An actuator characterized by a gap of a predetermined height. An output device comprising at least one actuator according to any one of claims 1 to 9. An input device comprising at least one actuator according to any one of claims 1 to 9. A plurality of fixed magnet parts configured so that the polarity directions of one side and the other side are arranged in different directions, and arranged according to a certain rule;
a plurality of moving magnet parts disposed between the plurality of fixed magnet parts arranged according to a certain rule, and configured to change the direction of polarity according to application of current and move in one direction or the other side of the fixed magnet part; and
An actuator comprising a pin portion connected to one end of the moving magnet portion and configured to move together with the moving magnet portion. According to clause 12,
A plurality of fixed magnet parts arranged around the plurality of moving magnet parts,
An actuator characterized in that it is arranged at equal intervals at the top left, bottom left, top right, and bottom right with respect to the moving magnet unit. According to clause 13,
The plurality of fixed magnet units have a flat cross-sectional shape of a rectangular parallelepiped,
An actuator characterized in that it is arranged in a form inclined at a predetermined angle relative to the horizontal or longitudinal direction.

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