CN111596755B - Vibration generating device and touch feeling presenting device - Google Patents
Vibration generating device and touch feeling presenting device Download PDFInfo
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- CN111596755B CN111596755B CN202010107319.XA CN202010107319A CN111596755B CN 111596755 B CN111596755 B CN 111596755B CN 202010107319 A CN202010107319 A CN 202010107319A CN 111596755 B CN111596755 B CN 111596755B
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- User Interface Of Digital Computer (AREA)
- Position Input By Displaying (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The present invention aims to simplify the constitution and reduce the cost. The present invention provides a vibration generating device (3), which comprises: a fixing member (20); a movable plate (2) which is disposed so as to be capable of relative displacement with respect to the fixed member; a plurality of elastic supporting bodies (21) which are arranged between the fixed component and the movable plate and support the movable plate in an elastically deformable manner; and a vibration generating unit (22) that is combined with the movable plate and that imparts vibration to the movable plate, wherein the vibration generating unit has a weight that is rotatable about a rotation axis (O) and whose center of gravity is eccentric with respect to the rotation axis, and wherein the elastic support body is formed such that the elastic modulus in the first direction is smaller than the elastic modulus in the second direction in a first direction (L1) and a second direction (L2) that intersect each other in the in-plane direction of the movable plate.
Description
Technical Field
The present invention relates to a vibration generating device and a tactile sensation presenting device.
Background
In recent years, devices for presenting a tactile sensation to an operator's operation by vibration have been often incorporated in portable information terminals such as smart phones, smart watches, tablet PCs, and electronic devices such as car navigation devices. As a vibration source of such a device, for example, an electromagnetic solenoid, an electromagnetic linear actuator, an actuator using a shape memory alloy wire, or the like is known.
For example, as shown in patent document 1 below, there is known a tactile sensation presentation device in which, when a touch panel disposed on the front surface side of a touch panel is touched with a fingertip, the touch panel is instantaneously moved by a shape memory alloy wire so that a mechanical operation sensation (a so-called click sensation) is applied to the fingertip in a simulated manner.
Further, as shown in patent document 2 below, there is known a device including a fixed member fixed to a housing supporting a touch panel, and a movable member coupled to the touch panel and supported by the fixed member via an elastic member, and including a haptic coil for transmitting vibration of the movable member to the touch panel.
Prior art literature
Patent literature
Patent document 1: international publication No. 2012/023606;
patent document 2: japanese patent application laid-open No. 2015-27661.
Disclosure of Invention
Problems to be solved by the invention
In order to use the above-described conventional various vibration sources to give a tactile sensation to the fingertips of the operator, it is often required to generate vibration in a predetermined one-way direction. However, in the conventional vibration source, not only a complicated driving circuit but also operation control is easily complicated to vibrate in one direction. Thus, it is difficult for the user to operate, and there is room for improvement. Further, as represented by the electromagnetic linear actuator and the like, the number of components of the conventional vibration source is large, and the structure tends to be complicated, so that the cost tends to be high.
The present invention has been made in view of such circumstances, and an object thereof is to provide a vibration generating device and a tactile sensation presenting device that can achieve simplification of the structure and cost reduction.
Solution for solving the problem
(1) The vibration generating device according to the present invention is characterized by comprising: a fixing member; a movable plate disposed so as to be capable of relative displacement with respect to the fixed member; a plurality of elastic supporting bodies provided between the fixed member and the movable plate, and supporting the movable plate so as to be elastically deformable; and a vibration generating unit that is combined with the movable plate and that imparts vibration to the movable plate, wherein the vibration generating unit has a weight that is rotatable about a rotation axis and whose center of gravity is eccentric with respect to the rotation axis, and wherein the elastic support body is formed such that an elastic modulus in the first direction is smaller than an elastic modulus in the second direction in a first direction and a second direction intersecting each other in an in-plane direction of the movable plate.
According to the vibration generating device of the present invention, the weight can be rotated about the rotation axis to generate vibration, and the vibration generated by the vibration generating unit can be transmitted to the movable plate. This can vibrate the movable plate, and can relatively displace the movable plate with respect to the fixed member. At this time, the movable plate is supported by the elastic support body having different elastic constants in the first direction and the second direction, and is thus supported so as to be easily displaced in the first direction as compared with the second direction due to the difference in elastic constants. Therefore, the movable plate can be positively vibrated in the first direction by receiving the vibration given from the vibration generating unit.
Thus, for example, as in the case of using a linear actuator or the like, the movable plate can be vibrated in one direction, that is, in the first direction. Thus, by using the vibration of the movable plate, for example, a mechanical operation feeling is applied to the fingertip of the operator in a simulated manner, and a touch feeling such as a click feeling can be given to the fingertip.
In particular, since the vibration generating section is configured with a simple configuration in which only the weight is rotated, a complicated driving circuit and a complicated operation control are not required, and the vibration generating section can be configured simply, and the cost can be reduced in accordance with the simplified configuration. Further, by a simple configuration in which the movable plate is supported only by the elastic support body, the movable plate can be vibrated in the first direction by the vibration generated by the vibration generating section. Therefore, the vibration generating device as a whole can be simplified in structure and reduced in cost, and can be used, for example, to effectively give a sense of touch to the fingertips of an operator by utilizing the vibration of the movable plate in the first direction.
(2) The elastic support may be formed such that the elastic modulus in the first direction is two times or more smaller than the elastic modulus in the second direction.
In this case, the movable plate can be vibrated in the first direction more positively by the vibration generated by the vibration generating section.
(3) The first direction and the second direction may be orthogonal to each other.
In this case, since the elastic support body is formed so that the first direction in which elastic deformation is easy and the second direction in which elastic deformation is difficult are orthogonal to each other, the movable plate can be further vibrated linearly in the first direction L1.
(4) The natural frequency of the movable plate may be larger than the vibration frequency of the vibration generating unit, which is determined by at least two main factors, that is, the elastic modulus of the elastic support body in the first direction and the weight of the movable plate.
In this case, since the natural frequency (natural frequency) of the movable plate is larger than the vibration frequency of the vibration generating portion, the resonance of the movable plate can be suppressed, and the vibration of the vibration generating portion can be efficiently transmitted to the movable plate, so that the movable plate can be stably vibrated in the first direction.
(5) The vibration generating portion may be combined with the movable plate so that the rotation axis is parallel to the second direction.
In this case, since the weight can be rotated about the rotation axis parallel to the second direction to generate vibration, vibration such as positive vibration in the first direction can be transmitted to the movable plate. Therefore, it is easy to make the movable plate vibrate in the first direction more efficiently.
(6) The elastic support body may be formed such that an elastic modulus in a third direction perpendicular to the movable plate is larger than an elastic modulus in the first direction.
In this case, since the elastic support body has an elastic modulus in the third direction larger than that in the first direction, it is difficult to elastically deform in the third direction compared with the first direction. Therefore, when the weight is rotated about the rotation axis parallel to the second direction to generate vibration, the movable plate can be vibrated more positively in the first direction than in the third direction orthogonal to the in-plane direction of the movable plate. Thus, the movable plate is easily vibrated in the first direction more efficiently.
(7) The elastic support body may be formed such that an elastic modulus in a third direction perpendicular to the movable plate is smaller than an elastic modulus in the second direction.
In this case, since the elastic modulus in the third direction of the elastic support is smaller than the elastic modulus in the second direction, when the weight is rotated around the rotation axis parallel to the second direction to generate vibration, the movable plate can be positively vibrated in the third direction orthogonal to the in-plane direction of the movable plate, similarly to the first direction. Therefore, for example, the mechanical operation feeling can be applied more strongly and more similarly to the fingertip of the operator, and the tactile sensation such as click feeling can be given more effectively to the fingertip.
(8) The vibration generating unit may further include: a rotor having the weight and rotatably disposed about the rotation axis; and a stator rotatably supporting the rotor.
In this case, the vibration generating unit can be simply configured as a so-called rotary vibration motor.
(9) The touch feeling presentation device according to the present invention is characterized by comprising: the vibration generating device; a housing that accommodates the fixed member and the vibration generating portion therein and in which the movable plates are combined in a displaceable manner; and a display panel which is accommodated in the housing and displays information through the movable panel, wherein the movable panel is operable by a fingertip, and a control unit which controls display of the display panel in accordance with an operation of the movable panel is accommodated in the housing.
According to the tactile sensation presentation device of the present invention, the movable plate can be used as, for example, a touch panel that can be operated with a fingertip. When the information displayed on the display panel is visually recognized and the movable plate is operated by a fingertip, the movable plate can be vibrated in the first direction by the vibration from the vibration generating section accommodated in the housing. Therefore, the mechanical operation feeling can be simulated to be applied to the fingertip touching the movable plate, and the touch feeling such as click feeling can be given to the fingertip.
Thus, the touch-sensitive presenting device having excellent use feeling can be realized, and for example, the touch-sensitive presenting device can be suitably used for in-vehicle applications (car navigation devices and the like) or wearable applications (portable information terminals such as smart phones, smart watches and the like) such as applications when the touch-sensitive presenting device is mounted on an operator or held by the operator. In addition, when the touch feeling presenting device is used as a portable information terminal or the like, it is also possible to notify the operator of arrival of, for example, a telephone call, mail, or the like by vibrating the vibration generating device as necessary in addition to the operation of the operator.
Effects of the invention
According to the present invention, the structure can be simplified and the cost can be reduced, and the use of the vibration of the movable plate in the first direction, for example, to give the sense of touch to the fingertips of the operator can be performed effectively.
Drawings
Fig. 1 is an external front view showing a first embodiment of a car navigation device (tactile sensation presentation device) according to the present invention.
Fig. 2 is a longitudinal sectional view of the car navigation device taken along the line A-A shown in fig. 1.
Fig. 3 is a longitudinal sectional view of the vibration generating portion shown in fig. 2 enlarged in the periphery thereof.
Fig. 4 is an external front view showing a second embodiment of the car navigation device (tactile sensation presentation device) according to the present invention.
Fig. 5 is a longitudinal sectional view of the car navigation device taken along the line B-B shown in fig. 4.
Fig. 6 is a longitudinal sectional view of the vibration generating portion shown in fig. 5 enlarged in the periphery thereof.
Fig. 7 is a perspective view of the vibration generating portion shown in fig. 6.
Detailed Description
(First embodiment)
A first embodiment according to the present invention will be described below with reference to the drawings. In this embodiment, a car navigation device for a vehicle will be described as an example of a tactile sensation presentation device.
As shown in fig. 1, the car navigation device 1 of the present embodiment is mounted on a mounting panel P in a vehicle V. Specifically, the car navigation device 1 is mounted so as to be integrally interposed between the driver's seat and the passenger seat in the mounting panel P. However, the position of the car navigation device 1, the fixing method, and the like are not limited to this case, and may be appropriately changed.
As shown in fig. 1 and 2, the car navigation device 1 includes: a vibration generating device 3 having a touch panel 2; a housing 4 in which the touch panels 2 are combined in a displaceable manner; a display panel 5 accommodated in the housing 4 and displaying information through the touch panel 2; and a control unit 6 which is accommodated in the housing 4 and controls the display of the display panel 5 in accordance with the operation of the touch panel 2.
In the present embodiment, two directions orthogonal to each other in a plan view of the housing 4 are referred to as a first direction L1 and a second direction L2. Therefore, the first direction L1 and the second direction L2 are orthogonal directions orthogonal to the third direction L3, which is the thickness direction of the case 4.
Further, since the car navigation device 1 is incorporated in the mounting panel P of the vehicle V, the third direction L3 corresponds to the front-rear direction of the vehicle V, the first direction L1 corresponds to the left-right direction of the vehicle V, and the second direction L2 corresponds to the up-down direction of the vehicle V, as shown in fig. 1.
As shown in fig. 1 and 2, the case 4 has a bottom wall portion 4a and a peripheral wall portion 4b, is formed in a rectangular shape in plan view, which is longer in length along the first direction L1 than in the second direction L2, and is formed in a bottomed tubular shape having a small thickness. Thus, the housing 4 has a housing space 10 that is open to the vehicle cabin side of the vehicle V.
The length of the accommodation space 10 along the first direction L1 is formed shorter than the length along the first direction L1 in the housing 4. Therefore, the case 4 is formed with a button mounting surface 11 facing the vehicle cabin side. However, the button installation surface 11 is not necessarily required, and may not be provided. The case 4 need not be a single member, and may be formed by integrally combining a plurality of members.
The vibration generating device 3 includes: a fixing member 20; a touch panel (movable plate according to the present invention) 2 disposed so as to be capable of relative displacement with respect to the fixed member 20 and operated by a fingertip; a plurality of leaf spring members (elastic supporting bodies according to the present invention) 21 provided between the fixing member 20 and the touch panel 2 and supporting the touch panel 2 so as to be elastically deformable; and a vibration generating unit 22 that is combined with the touch panel 2 via the display panel 5 and gives vibration to the touch panel 2.
The touch panel 2 is integrally combined with the housing 4 so as to block the accommodation space 10 of the housing 4.
At this time, the touch panel 2 is combined with the housing 4 so as to be displaceable in the in-plane direction itself defined by the first direction L1 and the second direction L2. Specifically, the touch panel 2 is combined with the housing 4 so as to be relatively displaceable in the first direction L1 with respect to the housing 4. Thus, a minute gap for allowing displacement of the touch panel 2 in the first direction L1 is secured between the touch panel 2 and the housing 4 in the first direction L1.
The touch panel 2 is a thin transparent panel formed of a synthetic resin material or a glass material, and has a known touch detection function such as a resistive film system, a capacitive system, or an optical system. Thus, the touch panel 2 can detect a portion touched with a fingertip. The surface of the touch panel 2 facing the vehicle cabin is an operation surface 2a operated by a finger tip or the like of an operator, a so-called touch-sensitive display surface.
The touch panel 2 thus configured is configured to instantaneously vibrate in the first direction L1 by the vibration from the vibration generating section 22 at least when operated by a fingertip.
The display panel 5 is disposed in the accommodation space 10 so as to overlap the touch panel 2. The display panel 5 is a Liquid crystal display device such as an LCD (Liquid CRYSTAL DISPLAY: liquid crystal display), for example, and can display various information through the touch panel 2. By touching the touch panel 2 with a fingertip in accordance with various information displayed on the display panel 5, an input signal (command signal) based on the operation content corresponding to the touched portion is transmitted to the control unit 6.
In particular, the display panel 5 has a GUI (GRAPHICAL USER INTERFACE: graphical user interface) capable of displaying not only various information but also at least a plurality of virtual buttons, not shown. The display panel 5 can display, for example, various windows, menus, and the like as display contents other than virtual buttons.
Thereby, the operator can touch the touch panel 2 with the fingertip to perform an input operation of a desired virtual button. Thus, an input signal based on the operation content corresponding to the virtual button subjected to the input operation is transmitted to the control unit 6.
The display panel 5 of the present embodiment is integrally combined with the touch panel 2, and is displaceable in the first direction L1 along with the touch panel 2. However, the present invention is not limited to this, and the display panel 5 may be disposed in the housing space 10 so as to be unable to displace, and the touch panel 2 may be displaced only in the first direction L1.
As shown in fig. 2, a control board 30 to which the control unit 6 is attached is accommodated in the accommodation space 10 of the housing 4. The control board 30 is, for example, a printed board having circuit patterns, not shown, formed on both surfaces thereof, and is stably supported in the accommodation space 10 by a support member, not shown.
The control unit 6 is a CPU or the like that integrally controls the car navigation device 1, and is mounted on the control board 30 as described above. Specifically, the control unit 6 controls the display of the display panel 5 based on the input signal accompanying the operation of the touch panel 2. The control unit 6 then operates the vibration generating unit 22 based on the operation of the touch panel 2, and controls the timing of generation of vibrations given to the touch panel 2, and the like.
The car navigation device 1 further includes various electronic components for operating the car navigation device 1.
For example, the car navigation device 1 mainly includes a position detection unit that detects the position (positioning) of the vehicle V, a communication unit that performs wireless communication with the outside, a memory unit, a plurality of operation switches 31 (see fig. 1), a sound output unit that outputs sound from a speaker, a map database unit that stores map data, and the like. The position detecting unit, the communication unit, the memory unit, the audio output unit, and the map database unit are accommodated in the accommodating space 10 in a state of being mounted on the control board 30.
In fig. 2, these position detecting unit, communication unit, memory unit, audio output unit, and map database unit are not shown.
The position detection unit includes, for example, a geomagnetic sensor, a gyro sensor, a vehicle speed sensor, and the like, and has a GPS function of detecting the position of the vehicle V based on a transmission radio wave from an artificial satellite. Thereby, the control section 6 can detect the current position, the traveling direction, the speed, the traveling distance, and the like of the vehicle V based on the detection result from the position detection section. The control unit 6 can display the current position and the traveling direction of the vehicle V on the display panel 5 in a state of overlapping the road map around the vehicle V based on the current position of the vehicle V, map data stored in the map database unit, and the like.
The control unit 6 can display road traffic information (traffic information, accident information, etc.), surrounding facility information, etc. on the display panel 5 in a state of being superimposed on a road map around the vehicle V, based on information entered and exited via the communication unit.
As shown in fig. 1, the plurality of operation switches 31 are arranged on the button installation surface 11 of the case 4 so as to be exposed to the vehicle cabin side. Thus, the operator can perform an input operation by pressing the operation switch 31 with a fingertip as necessary, and for example, can select and execute screen switching of the display panel 5, various functions as the car navigation device 1, and the like.
As shown in fig. 2, the fixing member 20 is formed in a frame shape in a plan view surrounding the control board 30, and is integrally formed with the bottom wall portion 4a and the peripheral wall portion 4b of the housing 4. However, the shape of the fixing member 20 is not limited to this, and may be formed, for example, so as to protrude from the bottom wall portion 4a of the housing 4 toward the display panel 5, and four fixing members may be formed so as to face four corners of the touch panel 2 and the display panel 5 in the third direction L3.
Further, an end surface of the fixing member 20 facing the display panel 5 is a flat fixing surface 20a.
The plate spring member 21 is disposed between the fixing member 20 and the display panel 5, and supports the touch panel 2 so as to be elastically deformable in the first direction L1 through the display panel 5.
As shown in fig. 1 and 2, the plate spring member 21 of the present embodiment is formed in a plate shape having a length in the first direction L1 shorter than a length in the second direction L2, and four plate spring members are arranged at intervals in the first direction L1 and the second direction L2 so as to face each other in the third direction L3 with respect to four corners of the display panel 5.
One end side of each plate spring member 21 is connected to the fixing surface 20a of the fixing member 20, and the other end side is connected to the display panel 5. Thereby, the plate spring member 21 supports the touch panel 2 so as to be displaceable in the first direction L1 via the display panel 5.
However, the plate spring member 21 is not limited to the case of being disposed between the display panel 5 and the fixing member 20. For example, as described above, when the display panel 5 is disposed in the accommodation space 10 so as to be unable to displace, and only the touch panel 2 is configured so as to be displaceable in the first direction L1, the plate spring member 21 may be configured so as to support the touch panel 2. The plate spring member 21 may be coupled to, for example, the bottom wall portion 4a of the housing 4 or the control board 30. In this case, the case 4 or the control board 30 functions as a fixing member.
In particular, the plate spring member 21 is formed such that the elastic modulus (spring constant) in the first direction L1 is smaller than the elastic modulus (spring constant) in the second direction L2. That is, the stiffness of the plate spring member 21 in the first direction L1 is lower than the stiffness of the plate spring member in the second direction L2, and the plate spring member supports the touch panel 2 so as to be positively displaceable in the first direction L1 by a difference in elastic modulus.
The vibration generating portion 22 is mounted at the center of the display panel 5. Thus, the vibration generating unit 22 can be integrally combined with the touch panel 2 via the display panel 5, and the generated vibration can be transmitted to the touch panel 2 via the display panel 5.
However, the present invention is not limited to this case, and for example, as described above, when the display panel 5 is disposed in the accommodation space 10 so as to be unable to displace, and the touch panel 2 is configured so as to be able to displace only in the first direction L1, the vibration generating unit 22 may be configured so as to be attached to the touch panel 2. In fig. 1 and 2, the vibration generating unit 22 is simplified in illustration.
As shown in fig. 3, the vibration generator 22 is a so-called rotary vibration motor having a weight 40 rotatable about a rotation axis O and having a center of gravity eccentric to the rotation axis O. Specifically, the vibration generating unit 22 is a coin-type brushless motor having a stator 41 and a rotor 42.
The vibration generating portion 22 is mounted to the display panel 5 such that the rotation axis O is parallel to the third direction L3. In addition, a direction intersecting the rotation axis O in a plan view seen from the third direction L3 is referred to as a radial direction, and a direction surrounding the rotation axis O is referred to as a circumferential direction.
The rotor 42 includes a bearing 50, a back yoke 51, a magnet 52, and a weight 40.
The bearing portion 50 is a sliding bearing formed in a cylindrical shape, such as an oil-retaining bearing, and is disposed coaxially with the rotation axis O. However, the bearing portion 50 is not limited to a sliding bearing, and may be constituted by a ball bearing or the like that holds balls between an inner ring and an outer ring in a rolling manner, for example. A shaft 61 to be described later is inserted into the insertion hole 50a of the bearing portion 50.
The back yoke 51 includes: the yoke body 51a having the rotation axis O as a center and disposed coaxially with the rotation axis O, the fitting tube portion 51b extending from the inner peripheral edge portion of the yoke body 51a toward the display panel 5 side along the rotation axis O, and the attachment plate 51c extending from the outer peripheral edge portion of the yoke body 51a toward the radial direction outside are integrally formed.
The fitting cylindrical portion 51b is formed in a cylindrical shape, and is fitted and fixed to the bearing portion 50. Thereby, the entire back yoke 51 can rotate with the bearing portion 50 about the rotation axis O as a center. The attachment plate 51c extends outward in the radial direction from a part of the outer peripheral edge portion of the yoke body 51 a. The mounting plate 51c is formed in accordance with the shape of the weight 40, for example, in a fan shape having a center angle of about 180 °.
The magnet 52 is attached to the yoke body 51a of the back yoke 51. At this time, the magnet 52 is attached to the yoke body 51a so as to surround the bearing portion 50 from the outside in the radial direction. The material of the magnet 52 is not particularly limited, and a known material may be used.
The weight 40 is attached to the attachment plate 51c so as to be disposed radially outward of the back yoke 51. The weight 40 is formed in a fan shape centering on the rotation axis O, for example. For example, the weight 40 is formed such that the center angle is, for example, about 180 ° in a plan view seen from the third direction L3. Thus, the center of gravity of the weight 40 is eccentric with respect to the rotation axis O.
The material of the weight 40 is not particularly limited, but tungsten or the like, which is a metal material having a high specific gravity, is preferably used. The weight 40 is attached to the attachment plate 51c by, for example, adhesion, welding, or the like.
The stator 41 includes a base plate 60, a shaft 61, a coil 62, and a driving unit 63, and rotatably supports the rotor 42 about a rotation axis O.
The substrate 60 is disposed on the opposite side of the yoke body 51a in the third direction L3 with the magnet 52 interposed therebetween, and is integrally attached to the display panel 5. The base plate 60 is formed in a circular shape in plan view, for example, and its outer diameter is formed larger than the maximum outer diameter of the rotor 52.
In a central portion of the base plate 60, a shaft support hole 60a penetrating the base plate 60 in the third direction L3, for example, is formed coaxially with the rotation axis O.
The shaft 61 is disposed coaxially with the rotation axis O and is non-rotatably fixed in the shaft support hole 60 a. Thereby, the shaft 61 is stably supported by the base plate 60. The shaft 61 is formed to extend from the base plate 60 toward the rotor 42, and is inserted into the insertion hole 50a of the bearing portion 50. Thus, the bearing portion 50 is combined with the shaft 61 so as to be rotatable relative to the shaft 61. Thereby, the rotor 42 is supported by the shaft 61 as a whole and can rotate stably about the rotation axis O.
The coil 62 and the driving unit 63 are mounted on the substrate 60. The coil 62 is mounted on a portion of the substrate 60 facing the magnet 52 in the third direction L3.
The driving unit 63 is electrically connected to an external power source, not shown, and is electrically connected to the coil 62. The driving unit 63 has a hall element, not shown, and can detect the polarity of the magnet 52 by the hall element, and control the current supplied from the external power supply in accordance with the detected polarity to supply the current to the coil 62. By supplying current to the coil 62, a magnetic force is generated in the coil 62. Then, the rotor 42 can be rotated about the rotation axis O by the interaction between the magnetic force generated in the coil 62 and the magnetic force of the magnet 52. Thereby, the vibration generating unit 22 can generate vibration by the centrifugal force of the weight 40 associated with the rotation of the rotor 52.
Instead of the hall element, a driving IC incorporating the hall element may be provided in the driving section 63. In this case, the drive IC functions to supply a drive signal corresponding to the polarity of the magnet 52 to the coil 62.
Further, a pair of positioning rings 64 for positioning the bearing portion 50 in the third direction L3 are fitted to the shaft 61.
One positioning ring 64 is fitted to the shaft 61 so as to be disposed between the bearing portion 50 and the base plate 60. The other positioning ring 64 is fitted to the shaft 61 so as to be located on the opposite side of the positioning ring 64 in the third direction L3 with the bearing portion 50 interposed therebetween.
The positioning rings 64 are in sliding contact with the bearing portion 50 with little resistance, and function to position the bearing portion 50 in the third direction L3 and smooth rotation of the bearing portion 50. The material of the positioning ring 64 is not particularly limited, but, for example, various resin materials and the like conventionally used in the art are used in consideration of mechanical characteristics, heat resistance and the like.
For example, as a material of the positioning ring 64, a synthetic resin material having slidability such as polyacetal or nylon, or a synthetic resin to which a solid lubricant such as polytetrafluoroethylene or ultrahigh molecular weight polyethylene is added, or the like.
However, the retaining ring 64 is not required and may not be provided.
The vibration generating portion 22 configured as described above has a cap-shaped protective cover 43 that accommodates the rotor 42 therein. The protective cover 43 is integrally combined with the substrate 60, for example. However, the protective cover 43 is not necessarily required, and may not be provided.
(Action of automobile navigation device)
The case of using the car navigation device 1 having the vibration generating device 3 configured as described above will be described.
In this case, as shown in fig. 1, information displayed on the display panel 5 can be visually recognized through the touch panel 2, and an operation corresponding to a touched portion can be performed by operating the touch panel 2 with a fingertip. This makes it possible to appropriately use various functions of the car navigation device 1.
In particular, when the touch panel 2 is operated, the touch panel 2 can be instantaneously vibrated in the first direction L1, which is the in-plane direction of the operation surface 2a, by the vibration from the vibration generating portion 22. Therefore, the mechanical operation feeling can be applied to the fingertip touching the touch panel 2 in a simulated manner, and the touch feeling such as the click feeling can be given to the fingertip.
Described in more detail.
If the touch panel 2 is operated with a fingertip, the control section 6 supplies a current to the coil 62 through the driving section 63 shown in fig. 3, so that the coil 62 generates a magnetic force. As a result, the rotor 42 can be rotated about the rotation axis O by the interaction between the magnetic force generated in the coil 62 and the magnetic force of the magnet 52, and vibration can be generated by the centrifugal force acting on the weight 40.
Thereby, the vibration generated by the vibration generating unit 22 can be transmitted to the touch panel 2 via the display panel 5. At this time, since the vibration generating portion 22 is mounted so that the rotation axis O is parallel to the third direction L3, the touch panel 2 mainly vibrates in the in-plane direction of the operation surface 2a.
However, as shown in fig. 1, the touch panel 2 is supported by the leaf spring member 21 having a different elastic modulus in the first direction L1 and a different elastic modulus in the second direction L2, and is thus supported so as to be easily displaced in the first direction L1 as compared with the second direction L2 due to the different elastic modulus. Accordingly, the touch panel 2 can be positively vibrated in the first direction L1 by the vibration given from the vibration generating section 22.
Accordingly, for example, as in the case of using a linear actuator or the like, the touch panel 2 can be vibrated in one direction, that is, in the first direction L1. As a result, the mechanical operation feeling can be applied to the fingertip of the operator in a simulated manner by the vibration of the touch panel 2, and the touch feeling such as the click feeling can be given to the fingertip.
In particular, since the vibration generating section 22 is configured with a simple configuration in which only the weight 40 is rotated, the vibration generating section 22 can be configured simply without requiring a complicated driving circuit and a complicated operation control, and the cost can be reduced in accordance with the configuration. Further, by a simple configuration in which the touch panel 2 is supported only by the plate spring member 21, the touch panel 2 can be vibrated in the first direction L1 by the vibration generated by the vibration generating section 22.
Therefore, the entire structure of the vibration generating device 3 can be simplified and reduced in cost. As a result, the car navigation device 1 can be simplified in structure and reduced in cost.
As described above, according to the car navigation device 1 of the present embodiment, since the vibration generating device 3 is provided, simplification of the structure and cost reduction can be achieved, and the touch feeling can be effectively given to the fingertip of the operator by the vibration of the touch panel 2 in the first direction L1.
In the present embodiment, the plate spring member 21 is formed so that the first direction L1 in which elastic deformation is easy and the second direction L2 in which elastic deformation is difficult are orthogonal to each other, so that the touch panel 2 can easily vibrate more linearly in the first direction L1.
In the above embodiment, the plate spring member 21 may be configured such that the elastic modulus in the first direction L1 is two times or more smaller than the elastic modulus in the second direction L2. In this case, the touch panel 2 can be vibrated in the first direction L1 more positively.
In the first embodiment, the first direction L1 and the second direction L2 are described as directions orthogonal to each other, but the present invention is not limited to this, and the first direction L1 and the second direction L2 may intersect each other in the in-plane direction of the touch panel 2.
For example, the touch panel 2 may be configured to vibrate obliquely with respect to the left-right direction of the vehicle V when the car navigation device 1 is viewed from the vehicle cabin side.
In the first embodiment, the natural frequency of the touch panel 2 and the display panel 5, which are determined by at least two main factors, that is, the elastic modulus of the leaf spring member 21 in the first direction L1 and the weight of the touch panel 2 and the display panel 5, may be set to be larger than the vibration frequency of the vibration generating unit 22.
In this case, since the natural frequencies (natural vibration numbers) of the touch panel 2 and the display panel 5 are larger than the vibration frequency of the vibration generating portion 22, resonance of the touch panel 2 and the display panel 5 can be suppressed, and the vibration of the vibration generating portion 22 can be efficiently transmitted to the touch panel 2 and the display panel 5, so that the vibration can be stably vibrated in the first direction L1.
(Second embodiment)
Next, a second embodiment according to the present invention will be described with reference to the drawings. In the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
Although the vibration generating portion 22 is configured such that the rotation axis O is parallel to the third direction L3 orthogonal to the operation surface 2a of the touch panel 2 in the first embodiment, the vibration generating portion is configured such that the rotation axis O is parallel to the second direction L2 in the present embodiment.
As shown in fig. 4 and 5, the car navigation device 1 of the present embodiment includes a vibration generating device 70, and the vibration generating device 70 includes a vibration generating portion 71 attached to the display panel 5 such that the rotation axis is parallel to the second direction L2.
The vibration generating portion 71 is mounted at the center of the display panel 5. As a result, as in the first embodiment, the vibration generating unit 71 can be integrally combined with the touch panel 2 via the display panel 5, and the generated vibration can be transmitted to the touch panel 2 via the display panel 5.
In fig. 4 and 5, the vibration generating unit 71 is simplified.
As shown in fig. 6 and 7, the vibration generating unit 71 is a so-called rotary vibration motor having a weight 72 rotatable about a rotation axis O and having a center of gravity eccentric to the rotation axis O. Specifically, the vibration generating unit 71 is a cylinder-type brushless motor having a stator 73 and a rotor 74.
The stator 73 has a stator housing 80 formed in a bottomed tubular shape. A magnet, a commutator, and a brush, not shown, are provided inside the stator housing 80. In the stator case 80, a pair of lead wires, not shown, extend from the inside to the outside for supplying electric power.
The stator 73 thus configured is attached to the display panel 5 by a spacer 81 attached to the stator housing 80. At this time, the stator 73 is mounted so that the rotation axis O of the rotor 74 is parallel to the second direction L2.
The rotor 74 includes a coil not shown, a coil holder not shown around which the coil is wound, and a rotation shaft 85 attached to the coil holder.
The coil and the coil holder are accommodated in the stator housing 80. The rotation shaft 85 is disposed coaxially with the rotation axis O, and is formed so as to protrude from the inside of the stator housing 80 in the second direction L2.
The weight 72 is attached to the rotary shaft 85 in a state of being disposed outside the stator housing 80. The weight 72 is formed in a non-uniform shape in the circumferential direction, and the center of gravity is eccentric with respect to the rotation axis O. Thus, the vibration generating unit 71 can generate vibration by the centrifugal force of the weight 72 accompanying the rotation of the rotor 74.
The vibration generating device 70 of the present embodiment includes a leaf spring member (elastic support body according to the present invention) 75 disposed between the fixing member 20 and the display panel 5, and supporting the touch panel 2 so as to be elastically deformable in the first direction L1 via the display panel 5, as in the first embodiment.
The leaf spring members 75 are arranged at intervals in the first direction L1 and the second direction L2 so as to face the four corners of the display panel 5 in the second direction L2. The fixing member 20 is formed in a frame shape so as to surround the display panel 5, and is combined with the peripheral wall portion 4b of the housing 4.
One end side of each leaf spring member 75 is connected to the fixing member 20, and the other end side is connected to the display panel 5, and supports the touch panel 2 so as to be displaceable in the in-plane direction through the display panel 5. Further, each plate spring member 75 is formed in a plate shape having a length along the first direction L1 shorter than a length along the second direction L2.
In particular, the plate spring member 75 is formed so that the elastic modulus (spring constant) in the first direction L1 is smaller than the elastic modulus (spring constant) in the second direction L2, and supports the touch panel 2 so as to be displaceable in the first direction L1 by the difference in the elastic modulus. The leaf spring member 75 according to the present embodiment is formed so that the elastic modulus (spring constant) in the third direction L3 is larger than the elastic modulus (spring constant) in the first direction L1, and supports the touch panel 2 so that it is less likely to be displaced in the third direction L3 than in the first direction L1 by the difference in the elastic modulus.
The plate spring member 75 is not limited to the case of being provided between the display panel 5 and the fixing member 20, as in the first embodiment. For example, as described above, when the display panel 5 is disposed in the accommodation space 10 so as to be unable to displace, and only the touch panel 2 is configured so as to be displaceable in the first direction L1, the plate spring member 75 may be configured so as to support the touch panel 2.
(Action of automobile navigation device)
The car navigation device 1 according to the present embodiment configured as described above is different from the first embodiment only in the direction of the rotation axis O of the rotor 74, and can achieve the same operational effects as the first embodiment.
For example, as shown in fig. 4, if the touch panel 2 is operated with a fingertip, the control section 6 supplies a current to the coil 62, and causes the coil 62 to generate a magnetic force. As a result, the rotor 74 can be rotated about the rotation axis O by the interaction between the magnetic force generated in the coil 62 and the magnetic force of the magnet 52, and vibration can be generated by the centrifugal force acting on the weight 72.
Thereby, the vibration generated by the vibration generating unit 71 can be transmitted to the touch panel 2 via the display panel 5. At this time, since the vibration generating portion 71 is mounted so that the rotation axis O is parallel to the second direction L2, vibration that positively vibrates in the first direction L1 can be transmitted to the touch panel 2.
Further, since the spring rate of the plate spring member 75 in the third direction L3 is larger than the spring rate in the first direction L1, it is difficult to elastically deform in the third direction L3 as compared with the first direction L1. Therefore, when the weight 72 is rotated about the rotation axis O parallel to the second direction L2 to generate vibration, the touch panel 2 can be positively vibrated in the first direction L1 as compared with the third direction L3 orthogonal to the operation surface 2a of the touch panel 2. Thereby enabling the touch panel 2 to vibrate efficiently in the first direction L1.
Accordingly, in the case of the present embodiment, the touch panel 2 can be vibrated in one direction, that is, in the first direction L1, similarly to the case of using a linear actuator or the like, for example. As a result, the mechanical operation feeling can be applied to the fingertip of the operator in a simulated manner by the vibration of the touch panel 2, and the touch feeling such as the click feeling can be given to the fingertip.
In the above embodiment, the case where the plate spring member 75 is formed such that the elastic modulus (spring constant) in the third direction L3 is larger than the elastic modulus (spring constant) in the first direction L1 is exemplified, but the present invention is not limited to this case.
For example, the plate spring member 75 may be formed such that the elastic modulus (spring constant) in the third direction L3 is smaller than the elastic modulus (spring constant) in the second direction L2.
In this case, for example, the plate spring member 75 is preferably formed such that the elastic modulus (spring constant) in the third direction L3 is the same as or smaller than the elastic modulus (spring constant) in the first direction L1. However, the present invention is not limited to this case, and the elastic modulus (spring constant) in the third direction L3 may be larger than the elastic modulus (spring constant) in the first direction L1 as long as the condition that the elastic modulus (spring constant) in the second direction L2 is smaller is satisfied.
In the case of the above-described configuration, since the spring rate of the plate spring member 75 in the third direction L3 is smaller than the spring rate in the second direction L2, when the weight 72 is rotated around the rotation axis O parallel to the second direction L2 to generate vibration, the touch panel 2 can be positively vibrated in the third direction L3 perpendicular to the operation surface 2a of the touch panel 2, similarly to the first direction L1. That is, the touch panel 2 can be efficiently vibrated in the first direction L1 and the third direction L3.
Accordingly, since the touch panel 2 can be vibrated in the first direction L1 and also can be vibrated in the third direction L3, which is the contact direction of the fingertip, the mechanical operation feeling can be applied to the fingertip of the operator more strongly and more simulatively by the vibration of the touch panel 2. As a result, the finger tip can be given a tactile sensation such as a click feeling more effectively.
In the case where the plate spring member 75 is formed such that the elastic modulus (spring constant) in the third direction L3 is equal to or smaller than the elastic modulus (spring constant) in the first direction L1, it is preferable that the weight 72 be rotated about the rotation axis O parallel to the second direction L2 to positively vibrate the third direction L3 perpendicular to the operation surface 2a of the touch panel 2 when vibration is generated, so that the touch panel 2 can be vibrated as much as or more than the first direction L1.
Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiments may be implemented in other various modes, and various omissions, substitutions, and changes may be made without departing from the scope of the invention. The embodiments and modifications thereof include, for example, embodiments that can be easily conceived by those skilled in the art, substantially the same embodiments, and embodiments within the same range.
For example, in the above-described embodiment, the case where the touch feeling presentation device is applied to the car navigation device has been described as an example, but the present invention is not limited to this case, and may be applied to various electronic devices and the like that give a physical operation touch feeling to a fingertip in a simulated manner at the time of touching. For example, the present invention can be suitably used for wearable applications such as use in a state of being attached to or held by an operator. For example, the present invention can be suitably used for portable information terminals such as a smart watch and a smart phone.
In the above embodiments, the case where the touch panel is used as the movable plate has been described as an example, but the present invention is not limited to this case. For example, a control board accommodated in a housing may be used as the movable plate, or a dedicated movable plate may be provided in the housing. In this case, for example, the control board can be vibrated in the first direction by the vibration generated by the vibration generating unit, and the vibration can be transmitted to the touch panel via the housing. Thus, the same operational effects can be achieved.
In particular, when the control board is used as the movable plate, the control board may be configured to actively vibrate in the third direction by using, for example, the vibration of the vibration generating portion.
In the above embodiments, the case of using the plate spring member as an example of the elastic support is described as an example, but the present invention is not limited to this case. For example, if the elastic modulus can be changed according to the direction, a coil spring or the like may be used.
Symbol description
O axis of rotation
L1 first direction
L2 second direction
L3 third direction
1. Automobile navigation device (touch prompting device)
2. Touch panel (Movable plate)
3. 70 Vibration generating device
4. Shell body
5. Display panel
6. Control unit
20. Fixing component
21. 75 Leaf spring component (elastic support body)
22. 71 Vibration generating part
40. 72 Heavy hammer
41. 73 Stator
42. 74 Rotor.
Claims (8)
1. A vibration generating device is characterized by comprising:
A fixing member;
A movable plate disposed so as to be capable of relative displacement with respect to the fixed member;
a plurality of elastic supporting bodies provided between the fixed member and the movable plate, and supporting the movable plate so as to be elastically deformable; and
A vibration generating unit integrally combined with the movable plate via a display panel for displaying information, and imparting vibration to the movable plate,
The vibration generating part has a weight rotatable about a rotation axis and having a center of gravity eccentric with respect to the rotation axis,
The elastic support body is formed in a manner that the elastic modulus in a first direction and a second direction intersecting each other in the in-plane direction of the movable plate are smaller than the elastic modulus in the second direction,
The natural frequency of the movable plate, which is determined by at least two main factors, that is, the elastic modulus of the elastic support body in the first direction and the weight of the movable plate, is larger than the vibration frequency of the vibration generating portion.
2. The vibration generating device according to claim 1, wherein the elastic support body is formed such that an elastic modulus in the first direction is two times or more smaller than an elastic modulus in the second direction.
3. The vibration generating device according to claim 1 or 2, wherein the first direction and the second direction are in a mutually orthogonal relationship.
4. The vibration generating device according to claim 1 or 2, wherein the vibration generating portion is combined to the movable plate in such a manner that the rotation axis is parallel with respect to the second direction.
5. The vibration generating device according to claim 4, wherein the elastic support body is formed such that an elastic modulus in a third direction orthogonal to the movable plate is larger than an elastic modulus in the first direction.
6. The vibration generating device according to claim 4, wherein the elastic support body is formed such that an elastic modulus in a third direction orthogonal to the movable plate is smaller than an elastic modulus in the second direction.
7. The vibration generating device according to claim 1 or 2, wherein the vibration generating section includes:
A rotor having the weight and rotatably disposed about the rotation axis; and
A stator rotatably supporting the rotor.
8. A touch feeling presenting device is characterized by comprising:
the vibration generating device according to any one of claims 1 to 7;
a housing that accommodates the fixed member and the vibration generating portion therein and that is configured to be displaceable combined with the movable plate; and
The display panel accommodated in the housing, displaying information through the movable plate,
The movable plate is provided to be operable with a fingertip,
A control unit is accommodated in the housing, and controls display of the display panel in accordance with an operation of the movable plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019029802A JP7240894B2 (en) | 2019-02-21 | 2019-02-21 | Vibration generator and tactile sensation presentation device |
| JP2019-029802 | 2019-02-21 |
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| CN111596755A CN111596755A (en) | 2020-08-28 |
| CN111596755B true CN111596755B (en) | 2024-10-18 |
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| CN202010107319.XA Active CN111596755B (en) | 2019-02-21 | 2020-02-21 | Vibration generating device and touch feeling presenting device |
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| CN (1) | CN111596755B (en) |
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| EP1560102A3 (en) * | 2004-02-02 | 2007-02-21 | Volkswagen Aktiengesellschaft | Touchscreen with spring-controlled haptic feedback |
| JP4602788B2 (en) * | 2004-07-21 | 2010-12-22 | アルプス電気株式会社 | Vibration generator |
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| JP5240157B2 (en) * | 2009-10-28 | 2013-07-17 | 三菱電機株式会社 | Switchgear |
| JP2011153633A (en) * | 2010-01-26 | 2011-08-11 | Aisin Seiki Co Ltd | Rotating device |
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| JP2013161384A (en) * | 2012-02-08 | 2013-08-19 | Alps Electric Co Ltd | Input device |
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| JP6825886B2 (en) * | 2016-11-28 | 2021-02-03 | セイコーインスツル株式会社 | Vibration generators and electronic devices |
| JP6967938B2 (en) * | 2016-12-16 | 2021-11-17 | セイコーインスツル株式会社 | Vibration generator control device, electronic device, and vibration generator control method |
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| JP2000137576A (en) * | 1998-10-30 | 2000-05-16 | Nec Corp | Touch panel type input device |
| JP2015522897A (en) * | 2012-07-26 | 2015-08-06 | イマージョン コーポレーションＩｍｍｅｒｓｉｏｎ Ｃｏｒｐｏｒａｔｉｏｎ | Suspension member with integrated piezoelectric material providing haptic effect to touch screen |
| JP2016053778A (en) * | 2014-09-03 | 2016-04-14 | レノボ・シンガポール・プライベート・リミテッド | Input device and method for tactile feedback |
| JP2018137973A (en) * | 2017-02-21 | 2018-08-30 | セイコーインスツル株式会社 | Vibration generating device and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111596755A (en) | 2020-08-28 |
| JP7240894B2 (en) | 2023-03-16 |
| JP2020135558A (en) | 2020-08-31 |
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