JP2013069169A - Operation input device and electronic equipment having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation input device in which height can be easily reduced.SOLUTION: An operation input device includes: a coil 11; an operation part 12 which is displaced in a Z direction in parallel with the axial direction of the coil 11 in accordance with an action of an operation input; and a core 13 which is inserted into the coil 11 in accordance with the displacement of the operation part 12. The core 13 includes an insertion part 14 whose cross-sectional area in a direction in an XY plane orthogonal to the Z direction is gradually and monotonously increased as a distance between the core 13 and the operation part 12 decreases in a direction separating from the coil 11 at the top end to be inserted into the coil 11. The length of the coil 11 in the axial direction b2 is shorter than the length of the insertion part 14 in the Z direction a2.

Description

  The present invention relates to an operation input device including an operation unit that is displaced in the axial direction of a coil by an operation input, and an electronic apparatus including the operation input device.

  Conventionally, an analog output signal corresponding to the amount of change is output by utilizing the fact that the impedance of the coil changes when a conductive member is inserted into the coil through which a high-frequency current flows by pushing the movable part. A button switch is known (see, for example, Patent Document 1). This button switch detects a change in the impedance of the coil as a change in the pressing amount of the movable part.

JP-A-2005-71875

  FIG. 1 is a cross-sectional view schematically illustrating a conventional operation input device that detects a change in the self-inductance of the coil 111 as a change in the operation amount (displacement amount) of the operation unit 112. The operation input device of FIG. 1 includes a coil 111, an operation unit 112 that is displaced in the axial direction of the coil 111 by the action of the operation input, and a core 113 that is inserted into the coil 111 due to the displacement of the operation unit 112. Yes.

  However, in a state where the lower end of the core 113 inserted into the coil 111 penetrates below the lower end of the coil 111, the self-inductance of the coil 111 does not change even if the operation unit 112 is displaced. Cannot be detected correctly. Therefore, in order to detect the displacement amount of the operation unit 112 even after the core 113 is inserted into the coil 111, the length b1 of the coil 111 is equal to the displacement amount a1 after the core 113 is inserted into the coil 111. Or longer than that. Therefore, it is difficult to suppress the height of the operation input device and the electronic device including the operation input device (lowering the height).

  Accordingly, an object of the present invention is to provide an operation input device and an electronic apparatus including the same, which can be easily reduced in height.

In order to achieve the above object, an operation input device according to the present invention comprises:
Coils,
An operation unit that is displaced in the axial direction of the coil by the action of an operation input;
A core inserted into the coil by the displacement of the operation unit,
The core has an insertion portion in which a cross-sectional area in a direction orthogonal to the axial direction gradually changes in the axial direction,
The coil has a shorter length in the axial direction than the insertion portion.

  In order to achieve the above object, an electronic apparatus according to the present invention includes the operation input device according to the present invention.

  According to the present invention, it is possible to easily reduce the height of the operation input device and the electronic apparatus including the operation input device.

It is sectional drawing which showed the conventional operation input device simply. It is sectional drawing which showed simply the operation input apparatus which is one Embodiment of this invention. 1 is an overall perspective view of an operation input device 1 according to a first embodiment of the present invention. 3 is an exploded perspective view of the operation input device 1. FIG. 3 is a cross-sectional view of the operation input device 1. FIG. FIG. 6 is a diagram showing the positional relationship between the magnetic flux Φ generated around the coil 21 and the insertion portion 24 of the core 23 in a state where the operation portion 22 is not pushed. FIG. 6 is a diagram showing a positional relationship between a magnetic flux Φ generated around a coil 21 and an insertion part 24 of a core 23 in a state where an operation part 22 is pushed. 5 is a cross-sectional view showing a state where the operation input device 1 is attached to a substrate 51. FIG. It is the figure which showed the core from which the shape of an insertion part differs mutually. It is the graph which showed the relationship between the displacement amount S of the operation part 22, and the self-inductance L of the coil 21 for every core from which the shape of an insertion part differs mutually. It is a perspective exploded view of the operation input device 2 which is the 2nd Example of this invention. 3 is a cross-sectional view of the operation input device 2. FIG. It is the whole perspective view from the upper part of the operation input apparatus 3 which is the 3rd Example of this invention. 4 is an exploded perspective view of the operation input device 3. FIG. 2 is an overall perspective view of the operation input device 3 from below. FIG. 3 is a cross-sectional view of the operation input device 3. FIG. FIG. 17 is a partially enlarged view of FIG. 16. 5 is a perspective sectional view showing a state where the operation input device 3 is attached to a substrate 51. FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 2 is a cross-sectional view schematically showing an operation input device according to an embodiment of the present invention.

  The operation input device is an operation interface that receives operation input from the normal direction side of the XY plane by the operation unit 12 in an orthogonal coordinate system determined by the X, Y, and Z axes. The operation input acts on the operation unit 12 directly or indirectly by an operator (user) finger or the like. The operation input device outputs an output signal that changes according to the operation input received by the operation unit 12. An operation input by the operator is detected based on the output signal. By detecting the operation input, it is possible to make the computer grasp the operation content corresponding to the detected operation input.

  The operation input device is mounted or connected to a predetermined host, for example. Specific examples of the host include electronic devices such as mobile terminals (mobile phones, mobile game machines, music and video mobile players, etc.), game machines, personal computers, vehicle computers, operation controllers, mice, and electrical appliances. The connection form between the operation input device and the host may be a wired connection or a wireless connection. Further, the operation input device itself may be an electronic device such as an operation controller or a mouse.

  For example, the operation input device can move an object displayed on the screen of a display mounted on or connected to such a host in accordance with the operation content intended by the operator. The object displayed on the screen is, for example, an instruction display such as a cursor or a pointer. A display object such as a character may be used. In addition, when an operator gives a predetermined operation input, a desired function of the electronic device corresponding to the operation input can be exhibited.

  The operation input device of FIG. 2 includes a coil 11, an operation unit 12 that is displaced in the axial direction of the coil 11 by the action of the operation input, and a core 13 that is inserted into the coil 11 due to the displacement of the operation unit 12. Yes. The operation input device in FIG. 2 detects a change in the self-inductance of the coil 11 as a change in the operation amount (displacement amount) of the operation unit 12.

  The core 13 has an insertion portion 14 whose cross-sectional area in the direction orthogonal to the axial direction of the coil 11 gradually changes in the axial direction at the tip portion inserted into the coil 11. In the case of FIG. 2, the axial direction of the coil 11 is parallel to the Z direction, and the cross-sectional area of the insertion portion 14 is an area in the XY plane orthogonal to the Z direction. The cross-sectional area of the insertion portion 14 gradually increases monotonically as the distance from the operation portion 12 decreases in the direction away from the coil 11. According to such a configuration, the distance in the XY plane direction between the inner peripheral side surface of the coil 11 and the insertion portion 14 changes according to the amount of displacement after the insertion portion 14 is inserted into the coil 11. Therefore, even after the core 13 is inserted into the coil 11, the self-inductance of the coil 11 can be changed according to the amount of displacement of the operation unit 12.

  In addition, since the cross-sectional area of the insertion portion 14 gradually changes in the axial direction of the coil 11, even when the lower end of the core 13 (the lower end of the insertion portion 14) penetrates below the lower end of the coil 11, The amount can be detected correctly. Accordingly, the length b2 of the coil 11 in the Z direction can be made shorter than the length a2 of the insertion portion 14 in the Z direction (that is, the length of the portion where the cross-sectional area of the core 13 gradually changes in the Z direction). The length b2 of the coil 11 can be easily shortened with respect to the displacement amount of the portion 12. As a result, it is possible to easily reduce the height of the operation input device and the electronic device including the operation input device. In addition, since the amount of coil used is reduced, the price of the operation input device can be easily reduced.

  Next, the configuration of the operation input device according to the embodiment of the present invention will be described in more detail.

  FIG. 3 is an overall perspective view of the operation input device 1 according to the first embodiment of the present invention. FIG. 4 is an exploded perspective view of the operation input device 1. FIG. 5 is a cross-sectional view of the operation input device 1. The operation input device 1 includes a coil 21, a case 26, a terminal 27, an operation unit 22, a core 23, and a spring 25.

  The coil 21 is a winding coil in which a wire (conductive wire) is wound in a cylindrical shape. The coil 21 has a cylindrical shape, but may have another cylindrical shape such as a rectangular tube shape. The coil 21 is wound around and fixed to the outer side surface of the cylindrical portion of the case 26. That is, the case 26 functions as a so-called bobbin. The coil 21 is electrically connected to a terminal 27 fixed to the case 26, and is electrically connected to a predetermined external circuit via the terminal 27. One end of the coil 21 is connected to the terminal 27A, and the other end of the coil 21 is connected to the terminal 27B.

  The operation unit 22 is formed of a nonmagnetic material such as resin, and includes a pressing unit 31 and a body unit 32. The pressing part 31 is a disk-like top part on which an operation input in the Z direction acts directly or indirectly. The trunk portion 32 is a cylindrical member that protrudes from the central portion of the pressing portion 31 on the coil 21 side.

  The core 23 is a soft magnetic body that is displaced in the axial direction of the coil 21 (in the figure, the vertical direction of the operation input device 1) by an operation input acting on the operation unit 22. The core 23 is displaced in the axial direction of the coil 21 in conjunction with the movement of the operation unit 22 to which the operation input acts directly or indirectly. The core 23 is fixed inside the trunk portion 32.

  The core 23 has an insertion portion 24 whose cross-sectional area in a direction orthogonal to the axial direction of the coil 21 gradually changes in the axial direction at a distal end portion inserted into the coil 21. The insertion portion 24 has a tapered shape that gradually decreases toward the tip of the core 23 on the coil 21 side. The cross-sectional area of the insertion portion 24 gradually increases monotonously as the distance from the operation portion 22 decreases in the direction away from the coil 21.

  The core 23 moves in the space inside the cylindrical portion 43 of the case 26. In the core 23, the outer peripheral side surface of the trunk portion 32 slides along the inner peripheral side surface 44 of the cylindrical portion 43. The displacement amount of the core 23 changes continuously according to the input amount of the operation input acting from above the core 23. The core 23 is a displacement member that changes the self-inductance of the coil 21 by displacing the axis of the coil 21 by an operation input that operates from above the core 23. As the core 23 strokes in the direction of insertion into the coil 21, the self-inductance of the coil 21 increases, and as the core 23 strokes in the opposite direction to the direction of insertion into the coil 21, the coil 21. The self-inductance of is reduced.

  For example, the core (including the insertion portion) may be made of a material having a relative permeability higher than 1, and the relative permeability is preferably 1.001 or more. Specifically, iron, iron alloys (steel, etc.) are mentioned. The relative permeability of iron is 5000. For example, the core may be press-formed from a steel plate. Thereby, compared with the case where it molds, for example, a manufacturing process can be simplified and cost can be reduced.

  The coil spring 25 is a support member that elastically supports the operation unit 22 to which the core 23 is attached so as to be displaceable in the axial direction of the coil 21. The coil spring 25 is an elastic body that generates a reaction force that pushes back the operation unit 22 in a direction opposite to the direction in which the operation unit 22 is pushed by an operation input. The coil spring 25 is disposed so as to surround the outer peripheral side surface of the cylindrical portion 43 of the case 26.

  The coil spring 25 is disposed between the operation unit 22 and the case 26 so that a restoring force in a direction opposite to the direction in which the core 23 is inserted into the coil 21 is preliminarily applied to the operation unit 22 by the coil spring 25. Has been. In the case of the illustrated configuration, the upper end portion of the coil spring 25 contacts the lower surface of the pressing portion 31 of the operation portion 22, and the lower end portion of the coil spring 25 protrudes from the outer peripheral side surface of the cylindrical portion 43 of the case 26. Touching.

  The initial position of the operation unit 22 is fixed by the return force of the coil spring 25 when the operation unit 22 and the case 25 are engaged in the initial operation state where the operation input does not act on the operation unit 22. The snap fit 33 is a locking portion formed on the side surface of the body portion 32 of the operation portion 22 and is provided on the side surface of the cylindrical portion 43 of the case 26 in the Z direction so that the operation portion 22 can be displaced in the Z direction. Engage with the groove 41. The snap fit 33 slides along the groove 41 whose longitudinal direction is the Z direction. The snap fit 33 functions as a rotation stopper that restricts the operation unit 22 from rotating in the Z direction by engaging with the groove 41. Further, the snap fit 33 functions as a retainer that prevents the operation unit 22 from coming out of the case 26 when the claw portion of the snap fit 33 is hooked on the upper end of the groove 41. FIG. 5 shows a state in which the claw portions of the snap fits 33A and 33B are hooked on the upper ends of the grooves 41A and 41B, respectively.

  Further, when the core 23 is a plate-like member, the core 23 can be manufactured inexpensively and easily because it is easy to press. Further, by making the core 23 fixed to the central portion of the trunk portion 32 into a plate shape, the interval between the coil 21 and the core 23 can be increased in the thickness direction of the core 23 (X direction in the case of FIG. 5). . Thereby, the place which arrange | positions latching parts, such as the snap fit 33, can be ensured easily, and the assembly | attachment property to the case 26 of the operation part 22 also improves.

  When the positional relationship between the coil 21 and the core 23 changes due to the displacement of the operation unit 22, the magnetic permeability around the coil 21 changes, so that the self-inductance of the coil 21 changes. The coil 21 outputs a signal waveform corresponding to the displacement amount of the operation unit 22 (displacement amount of the core 23) according to the change in inductance. Therefore, the displacement amount (operation amount) of the operation unit 22 can be calculated by detecting the signal waveform.

  In an initial operation state in which no operation input is applied to the operation unit 22, the lower end of the insertion unit 24 may be higher than the upper end surface of the coil 21, but as shown in FIG. By setting the lower end to the same height as the upper end surface of the coil 21, the operation input device and the electronic device including the same can be further reduced in height. Note that the lower end of the operation unit 24 may be located at a position lower than the upper end surface of the coil 21.

  Further, the core 23 is formed so that the thickest portion of the core 23 (in the case of FIG. 7, the upper end portion of the insertion portion 24) is at the same height as the upper end surface of the coil 21 in the state where the operation portion 22 is pushed most. Good. Thereby, the self-inductance of the coil 21 can be efficiently changed with respect to the insertion amount of the insertion part 24 to the coil 21. In FIG. 7, F <b> 1 represents an operation input that acts on the operation unit 22, and F <b> 2 represents a reaction force that pushes back the operation unit 22 by the coil spring 25.

  Theoretically, the magnetic flux Φ generated when a predetermined external circuit passes a current through the coil 21 is theoretically equal in any part of the inner periphery of the coil 21 if the coil 21 is infinitely long. The arrows in FIGS. 6 and 7 indicate the direction of the magnetic flux Φ. However, if the coil 21 has a finite length, the magnetic flux density tends to be higher as it is closer to the coil 21. Therefore, the core 23 having a higher relative permeability approaches the vicinity of the coil 21 having a higher magnetic flux density as the displacement of the operation unit 22 increases by making the tip of the core 23 have a shape in which the cross-sectional area gradually changes. Thereby, since more magnetic flux (PHI) flows, the self-inductance of the coil 21 increases. Therefore, the self-inductance of the coil 21 can be changed even if the height of the coil 21 is made lower than the displacement amount of the operation unit 22 (stroke length of the operation unit 22). By detecting the change in the self-inductance of the coil 21, the displacement amount of the operation unit 22 can be detected.

  FIG. 8 is a cross-sectional view showing a state where the operation input device 1 is attached to the substrate 51. A relief hole 52 is formed in the substrate 51 to prevent the insertion portion 24 that has passed through the coil 21 from coming into contact with the substrate 51. By providing the escape hole 52, the total height of the operation input device 1 and the substrate 51 can be lowered. The board | substrate 51 is a board | substrate mounted in electronic devices, such as the above-mentioned portable terminal, for example.

  On the substrate 51, for example, an external circuit 50 that detects the amount of displacement of the operation unit 22 by passing a current through the coil 21 is mounted. The external circuit 50 includes, for example, a detection unit that detects a change in inductance of the coil 21.

  The detection unit is a detection unit that outputs a detection signal corresponding to an analog displacement amount that continuously changes in the operation unit by electrically detecting a change in the inductance of the coil. The detection unit may be configured by a detection circuit mounted on a substrate (not shown).

  For example, the detection unit detects a physical quantity that changes equivalently to a change in the inductance of the coil, and outputs the detected value of the physical quantity as a value equivalent to the displacement amount of the operation unit. In addition, the detection unit may calculate the inductance of the coil by detecting a physical quantity that changes equivalently to the change in the inductance of the coil, and output the calculated value of the inductance as a value equivalent to the displacement of the operation unit. Good. Further, the detection unit may calculate the displacement amount of the operation unit from the detected value of the physical quantity or the calculated value of the inductance, and output the calculated value of the displacement amount.

  Specifically, the detection unit supplies a pulse signal to the coil to generate a signal waveform that changes in accordance with the magnitude of the inductance of the coil, and changes the inductance of the coil based on the signal waveform. Is preferably detected electrically.

  For example, as the amount of downward displacement of the operation unit in the upper region of the upper end surface of the coil increases, the magnetic permeability around the coil increases and the inductance of the coil increases. As the inductance of the coil increases, the amplitude of the pulse voltage waveform generated at both ends of the coil by supplying the pulse signal also increases. Therefore, by setting the amplitude as a physical quantity that changes equivalently to the change in the inductance of the coil, the detection unit detects the amplitude and sets the detected value of the amplitude as a value equivalent to the displacement amount of the operation unit. Can be output. The detection unit can also calculate the inductance of the coil from the detected value of the amplitude, and output the calculated value of the inductance as a value equivalent to the displacement amount of the operation unit.

  Further, as the inductance of the coil increases, the slope of the pulse current waveform flowing through the coil becomes gentle due to the supply of the pulse signal. Therefore, by setting the inclination as a physical quantity that changes equivalently to the change in the inductance of the coil, the detection unit detects the inclination and sets the detected value of the inclination as a value equivalent to the displacement amount of the operation unit. Can be output. The detection unit can also calculate the inductance of the coil from the detected value of the tilt, and output the calculated value of the inductance as a value equivalent to the displacement amount of the operation unit.

  The detection unit is, for example, a detection unit that detects a change in the inductance of the coil by supplying a first pulse signal to the coil. The detection unit supplies a pulse current (first pulse current) corresponding to the first pulse signal to the coil, and based on a pulse voltage (first pulse voltage) generated at both ends of the coil, the inductance of the coil Detect changes. The displacement amount of the operation unit can be calculated according to the detection result of the change in the inductance of the coil.

  Further, the external circuit 50 may include a control unit that forcibly moves the operation unit 22 by causing a current to flow through the coil 21.

  The control unit is, for example, a control unit that generates a magnetic field that moves the operation unit by supplying a second pulse signal having a phase different from that of the first pulse signal to the coil. A magnetic field generated by a pulse current (second pulse current) corresponding to the second pulse signal flowing through the coil generates a force that pulls the operation unit to and from the coil together with the core. The operation unit is vibrated by fluctuations in the magnitude of the force generated when the second pulse signal is supplied to the coil. That is, since the second pulse signal is a signal whose amplitude temporarily changes, the magnitude of the force applied to the operation unit can be varied.

  The first pulse signal and the second pulse signal may be a rectangular wave, a triangular wave, or a sawtooth wave.

  By the way, although the shape of the above-mentioned core 23 was plate shape including the shape of the insertion part 24, the column shape which has a cone-shaped insertion part may be sufficient. For example, as shown in FIG. 9A, a cylindrical core 63A having a conical insertion portion may be used, and as shown in FIG. 9B, a prismatic core 63B having a pyramidal insertion portion may be used. 9C and 9D, cores 63C and 63D having insertion portions whose tapered side surfaces are curved in the axial direction of the core may be used.

  FIG. 10 is a graph showing the relationship between the displacement amount S of the operation unit 22 and the self-inductance L of the coil 21 for each core having a different shape of the insertion unit. In this way, the rate of change of the self-inductance L with respect to the displacement amount S can be adjusted by changing the shape of the insertion portion. Therefore, a free inductance profile for detecting the displacement amount S can be created, for example, by increasing the change in the self-inductance L when the displacement amount S is small.

  FIG. 11 is an exploded perspective view of the operation input device 2 according to the second embodiment of the present invention. FIG. 12 is a cross-sectional view of the operation input device 2. A description of the same configuration as in the above-described embodiment is omitted. The operation input device 2 has a plate-like core 73 formed with a left-right asymmetric insertion portion 74 that is tapered only on one side, instead of the core 23 of the operation input device 1 of FIG.

  The core 73 has an insertion portion 74 whose cross-sectional area in the direction orthogonal to the axial direction of the coil 21 gradually changes in the axial direction at the tip portion inserted into the coil 21. The cross-sectional area of the insertion portion 74 gradually increases monotonously as the distance from the operation portion 22 decreases in the direction away from the coil 21.

  FIG. 13 is an overall perspective view from above of the operation input device 3 according to the third embodiment of the present invention. FIG. 14 is an exploded perspective view of the operation input device 3. A description of the same configuration as in the above-described embodiment is omitted. The operation input device 3 includes a substrate 56 provided with a pattern coil instead of the coil 21 of the operation input device 1 of FIG. 4, and includes a case 28 instead of the case 26 of the operation input device 1. .

  The pattern coil is a planar coil (planar coil) having a conductor pattern planarly formed on the substrate 56. By adopting a planar coil, the operation input device 3 and an electronic device including the same can be easily reduced in height. The material of the conductor pattern is, for example, copper. A pattern coil is disposed around an opening 57 formed in the center of the substrate 56.

  FIG. 15 is an overall perspective view of the operation input device 3 from below. Lands 58 are provided at the four corners of the back surface of the substrate 56. Of the four lands 58, the pair of lands are connected to the pattern coil of the substrate 56 via the pattern wiring. The pattern coil is connected to a predetermined external circuit via the pair of lands. The other pair of lands are lands for fixing the operation input device 3 to the substrate on which the external circuit is mounted by surface mounting.

  FIG. 16 is a cross-sectional view of the operation input device 3. FIG. 17 is a partially enlarged view of FIG. The substrate 56 includes an insulating base material 91 and a pattern coil 92 disposed so as to overlap the base material 91. The pattern coil 92 is arranged in layers on the inner layer of the substrate 56. The pattern coil 92 may be mounted on one surface on the front surface or the back surface of the substrate 56 or may be mounted on both surfaces of the substrate 56.

  FIG. 18 is a perspective sectional view showing a state where the operation input device 3 is attached to the substrate 51. For example, an external circuit that detects the amount of displacement of the operation unit 22 by passing a current through the pattern coil of the substrate 56 is mounted on the substrate 51. A relief hole 52 is formed in the substrate 51 to prevent the insertion portion 24 that has passed through the pattern coil of the substrate 56 from coming into contact with the substrate 51. By providing the escape hole 52, the total height of the operation input device 3 and the substrate 51 can be easily reduced.

  The core 23 moves in the space inside the cylindrical portion 83 of the case 28. In the core 23, the outer peripheral side surface of the trunk portion of the operation unit 22 slides along the inner peripheral side surface 84 of the cylindrical portion 83. The core 23 is a displacement member that changes the self-inductance of the pattern coil by displacing the axis of the pattern coil of the substrate 56 by an operation input that operates from above the core 23. As the core 23 strokes in the direction inserted into the pattern coil, the self-inductance of the pattern coil increases, and as the core 23 strokes in the opposite direction to the direction inserted into the pattern coil, the pattern coil The self-inductance of is reduced.

  The coil spring 25 is disposed so as to surround the outer peripheral side surface of the cylindrical portion 83 of the case 28. The coil spring 25 is disposed between the operation unit 22 and the case 28 so that a restoring force opposite to the direction in which the core 23 is inserted into the pattern coil is preliminarily applied to the operation unit 22 by the coil spring 25. Has been. In the case of the illustrated configuration, the upper end portion of the coil spring 25 is in contact with the lower surface of the pressing portion of the operation portion 22, and the lower end portion of the coil spring 25 is on the flange portion 82 protruding from the outer peripheral side surface of the cylindrical portion 83 of the case 28. In contact.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-described embodiments, and various modifications, improvements, and modifications can be made to the above-described embodiments without departing from the scope of the present invention. Substitutions can be added. You may combine the structure of each part of the above-mentioned Example.

  For example, the core of the above-described embodiment has an insertion portion in which the cross-sectional area gradually increases monotonously as the distance to the operation portion decreases, but the cross-sectional area gradually decreases monotonously as the distance to the operation portion decreases. It may have an insertion portion. In addition, the core and the insertion portion may not be configured with the same component but may be configured with different components.

  The support member that elastically supports the operation unit is not limited to the coil spring, and may be a rubber member, a sponge member, or an elastic body such as a cylinder filled with air or oil.

  Further, the operation input device of the present invention is not limited to fingers and may be operated with the palm of the hand. Moreover, you may operate with a toe or a sole. The surface touched by the operator may be a flat surface, a concave surface, or a convex surface.

DESCRIPTION OF SYMBOLS 1 Operation input device 11,21,111 Coil 12,22,112 Operation part 13,23,113 Core 14,24 Insertion part 25 Spring 26,28 Case 27 Terminal 31 Push part 32 Trunk part 33 Snap fit 41 Groove 42 Flange part 43 cylindrical portion 44 inner peripheral side surface 50 external circuit 51 substrate 52 escape hole 56 substrate 57 opening 58 land 63A, 63B, 63C, 63D core 73 core 74 insertion portion 81 groove 82 flange portion 83 cylindrical portion 84 inner peripheral side surface 91 base material 92 Pattern coil Φ Magnetic flux

Claims (6)

Coils,
An operation unit that is displaced in the axial direction of the coil by the action of an operation input;
A core inserted into the coil by the displacement of the operation unit,
The core has an insertion portion in which a cross-sectional area in a direction orthogonal to the axial direction gradually changes in the axial direction,
The operation input device, wherein the coil is shorter in the axial direction than the insertion portion.   The operation input device according to claim 1, wherein the core has a plate shape. A case having a groove provided in the axial direction;
The core is disposed inside the operation unit,
The operation input device according to claim 2, wherein the operation portion includes a locking portion that engages with the groove on a side surface of the core in the plate thickness direction.   The operation input device according to any one of claims 1 to 3, wherein the coil is a planar coil.   The operation input device according to claim 4, wherein the planar coil is a pattern coil formed on a substrate.   An electronic device comprising the operation input device according to any one of claims 1 to 5.

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