CN106415709B - operation element operation detection device - Google Patents
operation element operation detection device Download PDFInfo
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- CN106415709B CN106415709B CN201580031328.2A CN201580031328A CN106415709B CN 106415709 B CN106415709 B CN 106415709B CN 201580031328 A CN201580031328 A CN 201580031328A CN 106415709 B CN106415709 B CN 106415709B
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- key
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- contact
- operating element
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/32—Constructional details
- G10H1/34—Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments
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- Acoustics & Sound (AREA)
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- Electrophonic Musical Instruments (AREA)
- Push-Button Switches (AREA)
Abstract
the purpose of the present invention is to provide a key operation detection device (5) which can suppress the occurrence of chatter vibration caused by sliding or floating between a fixed-side contact surface (10a) and a movable-side contact (9a), and can stably maintain the contact state of the contacts. A key operation detection device (5) is provided with: a fixed-side contact surface (10a) formed on a base plate (10) provided on a frame (2) that rotatably supports a key (4), a base portion (6) provided on the frame (2), an arch portion (7) that bulges out from the base portion (6), a top portion (8) provided on the front end of the bulging portion (7) on the bulging side, and a movable-side contact (9a) provided on the top portion (8), the fixed side contact surface (10a) and the movable side contact point (9a) are contacted by the elastic deformation of the arch part (7) and the operation signal of the key (4) is transmitted, wherein a base end side plane (BP) including an intersection line of the base portion (6) and the dome portion (7) and a tip end side plane (TP) including an intersection line of the dome portion (7) and the dome portion (8) intersect on the side of the rotational axis (3a) of the key (4), and the base end side plane (BP) and a contact point side plane (CP) including a fixed side contact surface (10a) intersect on the rotational axis (3a) of the key (4).
Description
Technical Field
The present invention relates to an operation element operation detection device. In detail, the present invention relates to an operation element operation detection device capable of transmitting a signal for detecting an operation of an operation element.
Background
Conventionally, there is known an operation element operation detection device capable of transmitting a signal for detecting an operation of an operation element while generating a reaction force with respect to the operation element when the operation element rotated by a pressing operation of an operator is operated. The operation element operation detection device is provided with a bulging portion for bulging an elastic member such as rubber, and a fixed side contact portion and a movable side contact portion. The operation element operation detection device is configured such that the dome portion is deformed by being pressed by the operation element, and a reaction force due to the deformation is generated with respect to the operation element. In addition, the operating element operation detecting device is configured such that the movable-side contact portion is pressed by the operating element to be brought into contact with the fixed-side contact portion, and a signal for detecting the operation of the operating element can be transmitted. For example, as described in patent document 1.
In the key operation detection device (operation element operation detection device) described in patent document 1, a plurality of key switches each including a fixed-side contact portion and a movable-side contact portion are provided inside an elastic bulging portion (dome portion). In the key switch, a movable side contact portion is provided on an elastic projection portion, opposite to a fixed side contact portion provided on a base. In the key operation detecting device, when the key as the operation element is pressed, a buckling phenomenon that the top of the elastic bulging portion is bent inward is generated, and the movable side contact portion is brought into contact with the fixed side contact portion. At this time, in the key operation detection device, the ratio of the amount of deformation of the elastic bulging portion is different between the near side and the far side of the rotation fulcrum of the key. Therefore, in the key operation detection device, the contact surface of the fixed-side contact portion and the contact surface of the movable-side contact portion are unevenly contacted, and a component force in the shearing direction of the pressing force, which is a biasing force in the direction perpendicular to the pressing direction of the elastic bulging portion, is generated. Therefore, the key operation detection device is likely to generate chattering caused by sliding or floating between the contact surface of the fixed side contact portion and the contact surface of the movable side contact portion, and has a problem that the contact state of the contacts is unstable.
Documents of the prior art
Patent document
patent document 1: japanese unexamined patent publication No. 2007-25576
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide an operation element operation detection device capable of suppressing the occurrence of chatter vibration caused by sliding or floating between a fixed-side contact and a movable-side contact, and stably maintaining a contact state of the contacts.
Means for solving the problems
That is, in the present invention, an operation element operation detection device includes: a fixed-side contact portion provided on a machine base having a fixed-side contact surface, the machine base rotatably supporting an operating element that rotates about a rotation fulcrum; a base disposed directly or indirectly on the machine; an arch portion bulging from the base portion; a tip portion provided at a tip end of the arch portion on a side of the bulge portion, and pressed by the operating element toward a side close to the fixed-side contact portion; a movable contact portion provided on the top portion and capable of contacting the fixed contact portion; the dome portion is elastically deformed when the dome portion is pressed by the operating element, the fixed-side contact portion comes into contact with the movable-side contact portion, and thereby the operation of the operating element is detected, a base-end-side plane including an intersection line of the base portion and the dome portion adjacent to each other and a tip-end-side plane including an intersection line of the dome portion and the dome portion adjacent to each other intersect on a side close to a rotation fulcrum of the operating element, and the base-end-side plane and a contact-side plane including the fixed-side contact surface formed in the fixed-side contact portion intersect on a side close to the rotation fulcrum of the operating element.
In the present invention, a movable-side contact surface parallel to the fixed-side contact surface when the fixed-side contact portion and the movable-side contact portion are in contact is formed on the movable-side contact portion.
In the present invention, the operating element is pivoted about a pivot axis passing through the pivot point, and an intersection line between the proximal end side plane and the distal end side plane is configured to substantially coincide with the pivot axis of the operating element.
In the present invention, the operating element is pivoted about a pivot axis passing through the pivot point, and an intersection line between the contact-side plane and the base-side plane is configured to substantially coincide with the pivot axis of the operating element.
In the present invention, the length of the cross-sectional shape of the crown portion and the apex portion on a plane parallel to the intersection line of the base end side plane and the tip end side plane and perpendicular to the base end side plane is configured to increase as the distance from the intersection line of the base end side plane and the tip end side plane increases.
In the present invention, a side surface of the dome portion on the opposite side of the pivot point of the operating element is formed in an arc shape with an intersection line of the base end side plane and the tip end side plane as a center.
In the operation element operation detection device according to the present invention, an intersection between the base end side plane and the tip end side plane and an intersection between the base end side plane and the contact side plane are substantially coincident with each other.
In addition, in the present invention, the fixed-side contact surface is formed on a second plane formed on the stage and intersecting the first plane formed on the stage.
In the present invention, the operation element includes an operation element pressing surface that presses a contact surface of the top portion, and the second plane is substantially parallel to the operation element pressing surface when the operation of the operation element is detected.
Effects of the invention
According to the present invention, since the deformation ratio of the dome portion when pressed by the rotationally operated operation element is nearly uniform over the entire circumference, the component force in the shearing direction of the pressing force applied to the movable-side contact in contact with the fixed-side contact becomes small. This can suppress the occurrence of chattering caused by sliding or floating between the fixed-side contact and the movable-side contact, and stably maintain the contact state of the contacts.
Drawings
Fig. 1(a) is a partial plan view showing a configuration of one embodiment of a keyboard device including an operation element operation detection device of the present invention, and (b) is a side sectional view showing the same configuration.
Fig. 2(a) is an enlarged plan view of the first embodiment of the operation element operation detection device of the present invention, (b) is an enlarged front view of the same portion, and (c) is a partial cross-sectional view in which a side surface of the same portion is enlarged.
Fig. 3(a) is an enlarged perspective view showing a reference intersection line between a base end side plane and a tip end side plane in the first embodiment of the operating element operation detecting device of the present invention, and (b) is an enlarged side view showing the same.
Fig. 4(a) is an enlarged perspective view showing a reference intersection line between a contact-side plane and a base-side plane in the first embodiment of the operating element operation detecting device according to the present invention, and (b) is an enlarged side view showing the same.
Fig. 5(a) is an enlarged side view showing a deformation ratio of the dome portion and a movement ratio of the movable contact portion in a state where the buckling phenomenon does not occur in the first embodiment of the operating element operation detecting device according to the present invention, (b) is an enlarged side view showing a deformation ratio of the dome portion in a state where the same buckling phenomenon occurs, and (c) is an enlarged side view showing a movement ratio of the movable contact portion in a state where the same buckling phenomenon continues.
fig. 6(a) is a side-enlarged partial sectional view of a second embodiment of the operation element operation detection device according to the present invention, and (b) is a side sectional view showing a state in which a movable-side contact and a fixed-side contact are in contact with each other in the same embodiment.
Fig. 7(a) is an enlarged plan view of a third embodiment of the operation element operation detection device of the present invention, (b) is an enlarged side view of the same embodiment, and (c) is a cross-sectional view in the X-arrow direction, a cross-sectional view in the Y-arrow direction, and a cross-sectional view in the Z-arrow direction in fig. 7(a) and 7 (b).
fig. 8 is an enlarged side view of a fourth embodiment of the operating element operation detecting device of the present invention.
Fig. 9 is a side view showing a state in which a reference intersection line between a contact-side plane, a base-side plane, and a tip-side plane coincides with a rotation axis in the first to fourth embodiments of the operating element operation detecting device according to the present invention.
Fig. 10(a) is a side partial sectional view of the case where the distance between the contact side plane and the base side plane is smaller than the lower limit value of the base in the first to fourth embodiments of the operating element operation detecting device of the present invention, (b) is a side partial sectional view of the case where the distance between the contact side plane and the base side plane is larger than the upper limit value of the base in the first to fourth embodiments of the operating element operation detecting device of the present invention, and (c) is a partial side sectional view of the case where there are a portion where the distance between the contact side plane and the base side plane is smaller than the lower limit value of the base and a portion where the distance is larger than the upper limit value of the base in the first to fourth embodiments of the operating element operation detecting device of the present invention.
Detailed Description
< first embodiment >
Hereinafter, a keyboard apparatus 1 according to an embodiment of the present invention will be described with reference to fig. 1. The keyboard apparatus 1 is a keyboard apparatus of an electronic keyboard instrument in the present embodiment.
The keyboard device 1 includes: a frame (machine base) 2, an upper limit stopper 2a, a key supporting point part 3, a key 4, and a key operation detecting device 5 which is an operation element operation detecting device. In the keyboard apparatus 1, a plurality of keys 4 (white keys 4a and black keys 4b) are arranged adjacent to each other on a frame 2 as a base. One side of each key 4 is rotatably supported by a key supporting point portion 3 provided in the frame 2 via a rotation shaft 3a serving as a rotation supporting point, and the other side thereof is in contact with an upper limit stopper 2a provided in the frame 2 when the key 4 is not operated. Further, in the keyboard apparatus 1, a plurality of key operation detection devices 5 corresponding to the respective keys 4 are provided so as to face the respective keys 4, that is, in the keyboard apparatus 1, the keys 4 and the key operation detection devices 5 corresponding to the keys 4 are provided adjacent to each other in the arrangement direction of the keys 4 in the frame 2.
When the key 4 is pressed by the operator (see the black arrow in fig. 1 (b)), the keyboard apparatus 1 is configured such that the key operation detection device 5 corresponding to the operated key 4 is compressed and deformed, thereby generating a reaction force against the operation of the key 4 and transmitting a signal against the operation of the key 4.
Next, a key operation detection device 5 according to a first embodiment of the present invention will be specifically described with reference to fig. 1 and 2. The key operation detection device 5 is a device that generates a reaction force (hereinafter, simply referred to as "reaction force") against the operation of the key 4 as an operation element and can transmit a signal for detecting the operation of the key 4. As shown in fig. 2, the key operation detection device 5 includes: a base portion 6 made of an elastic member such as silicone rubber, a raised portion (outer raised portion) 7, a top portion 8, an inner raised portion 9, and a substrate 10 made of an insulating base material.
The frame 2 includes, on its upper surface, a first flat portion 2b, a second flat portion 2c, and a third flat portion 2d, the first flat portion 2b having the key supporting point 3 formed thereon, the second flat portion 2c being formed at a position farther from the key supporting point 3 than the first flat portion 2b, and the third flat portion 2d being formed at a position farther from the key supporting point 3 than the second flat portion 2 c. In a state where the key 4 is not operated, the first flat portion 2b and the third flat portion 2d are in a state of being substantially parallel to a key pressing surface 4c described later, the key pressing surface 4c being a lower surface of the key 4 and pressing a contact surface 8a of the top portion 8 which is a contact surface with the key 4. As shown in fig. 5(b) and (c) described later, the second flat surface portion 2c is in a state of being substantially parallel to the key depression surface 4c in a state where the key 4 is operated (depressed).
The base portion 6 is used for fixing the dome portion 7, the dome portion 8, and the inner dome portion 9, which are formed of elastic members, in the key operation detection device 5. The base 6 is formed in a plate shape. A plurality of fixing projections, not shown, are formed on one side plane of the base 6. The base 6 is fixed to the base plate 10 by a protrusion so that one side plane is in close contact with the base plate 10. A plurality of raised portions 7 are formed on the other side plane of the base portion 6. That is, with the key operation detection device 5, the base portions 6 of the plurality of key operation detection devices 5 are integrally formed. In the present embodiment, the configuration is not limited to the configuration in which the base portions 6 of the plurality of key operation detection devices 5 are integrally formed, and a configuration in which only one dome portion 7 is formed in one base portion 6 may be employed.
The arch 7 is a part supporting the roof 8. The arch portion 7 is formed in a hollow arch shape bulging from the other side plane of the base portion 6 toward the key 4 of the keyboard apparatus 1. Specifically, as shown in fig. 2(a), the arch portion 7 is formed such that, when viewed from the other side of the base portion 6 in plan view, a side wall 7a of an elongated circular shape (elongated hole shape) in which a set of separated circular arcs are connected to each other by a straight line protrudes from the other side plane of the base portion 6. As shown in fig. 2(b) and 2(c), a dome 7c is formed on the protruding side of the side wall 7a of the dome portion 7 so as to cover the space surrounded by the side wall 7 a. The side wall 7a and the arch top 7c of the arch portion 7 are smoothly connected and integrated via a curved surface 7 b. Further, a crown portion 8 is formed at the tip of the crown portion 7c of the crown portion 7. That is, the arch portion 7 is integrally formed adjacent to the base portion 6 on the base end side, which is the opposite side to the expansion side, and integrally formed adjacent to the top portion 8 on the tip end side, which is the expansion side.
The top 8 is a member pressed by the key 4. As shown in fig. 2, the top portion 8 is formed to protrude from the dome 7c of the dome 7 toward the key 4 of the keyboard apparatus 1. Specifically, the top portion 8 is formed such that a substantially oblong table protrudes from the dome top 7c of the dome portion 7 when viewed from the other side of the base portion 6 in plan view. The crown portion 8 is formed integrally with the arch top 7c of the arch portion 7, thereby constituting a part of the arch top 7c of the arch portion 7. The top portion 8 is disposed so that the longitudinal center line thereof coincides with the longitudinal center line of the arch portion 7. A contact surface 8a with the key 4 is formed at the tip portion of the projecting side of the top portion 8, and when the key 4 is pressed by the operator, the contact surface 8a contacts a key pressing surface 4c which is the lower surface of the key 4.
The inner dome portion 9 is a movable contact portion that switches a transmission state (on state or off state) of a signal for detecting an operation of the key 4 in the circuit of the substrate 10. The inner dome 9 is located inside the dome 7, and is formed in a hollow dome shape bulging from the substrate 10 side of the top 8 toward the substrate 10. The proximal end of the inner dome 9 is formed integrally with the top 8, and the top 8 is formed with a hole that communicates the hollow portion of the inner dome 9 with the outside. A movable contact 9a made of a conductive material such as carbon is provided along the arch shape at the tip of the inner dome 9. The inner dome 9 is configured such that the movable contact 9a is brought into contact with a fixed contact surface 10a, which is a fixed contact of the substrate 10, by pressing the key 4 against the top portion 8. When the movable contact 9a of the inner dome 9 comes into contact with the fixed contact surface 10a, the signal transmission state of the circuit of the substrate 10 is switched from a state in which a signal is not transmitted (an off state, a state in which the key 4 is not operated) to a state in which a signal is transmitted (an on state, a state in which the key 4 is operated). This enables detection of the operation of the key 4 based on the signal transmission state of the substrate 10. In the present embodiment, the movable-side contact 9a is not limited to the dome shape, and may be any shape that can switch the transmission state (on state or off state) in the circuit of the substrate 10. In addition, the number of movable-side contacts 9a is not limited to a single one.
The substrate 10 is a fixed-side contact portion constituting a circuit for transmitting a signal for detecting the operation of the key 4. The substrate 10 is disposed on the frame 2. In addition, a plurality of fixing holes, not shown, are formed in the substrate 10. A not-shown protruding portion of the base portion 6 is inserted into the hole, and the base portion 6 is fixed to the substrate 10 so as to be in close contact with the substrate 10. That is, in the key operation detection device 5, the base portion 6, the dome portion 7, the dome portion 8, and the inner dome portion 9 are provided on the frame 2 via the substrate 10. A fixed-side contact surface 10a, which is a fixed-side contact, is provided on a part of the circuit of the substrate 10. The substrate 10 is configured such that the movable-side contact 9a comes into contact with the fixed-side contact surface 10a by pressing the key 4 against the top portion 8. In the substrate 10, the movable contact 9a is brought into contact with the fixed contact surface 10a, whereby the signal transmission state is switched to a signal transmission state (on state). In the present embodiment, the number of the fixed-side contact surfaces 10a is not limited to a single one.
As shown in fig. 1(a), the key operation detection device 5 is disposed such that the longitudinal center line of the dome portion 7 in the longitudinal direction is perpendicular to the rotation axis 3a of the key 4. As shown in fig. 1(b), the key operation detection device 5 is configured such that the entire contact surface 8a of the top portion 8 is in contact with the keys 4 of the keyboard apparatus 1 in the non-operated state. That is, the key operation detection device 5 is configured such that the entire contact surface 8a of the top portion 8 is always in contact with the key 4 within the operation range of the key 4.
The shapes of the base portion 6 and the dome portion 7 of the key operation detection device 5 will be described in more detail below with reference to fig. 1, 3, and 4. As shown in fig. 1(b) and 3, the key operation detection device 5 is configured such that a base end side plane BP, which is a virtual plane including a plane defined by an intersection line BL of connecting portions of the base portion 6 and the dome portion 7, which are adjacent to each other and integrally formed, and a tip end side plane TP, which is a virtual plane including a plane defined by an intersection line TL of connecting portions of the dome portion 7 and the dome portion 8, which are adjacent to each other and integrally formed, intersect at an arbitrary position on the rotation axis 3a side of the key 4 (on the side closer to the rotation axis 3a of the key operation detection device 5). That is, in the key operation detecting device 5, the base end side plane BP and the tip end side plane TP intersect on the rotation axis 3a side, and the base end side plane BP and the tip end side plane TP form a non-parallel positional relationship. In the present embodiment, the key operation detection device 5 is configured such that the base-end plane BP and the tip-end plane TP intersect on the same line (hereinafter, simply referred to as "reference intersection line SL") different from the rotation axis 3 a. The key operation detection device 5 is configured such that the protruding height of the dome portion 7 increases in proportion to the vertical distance from the reference intersection line SL. The thickness of the base 6 is configured to decrease in proportion to the vertical distance from the rotation axis 3 a.
as shown in fig. 1(b) and 4, the key operation detection device 5 is configured such that the base-side plane BP and a contact-side plane CP, which is a virtual plane including a plane defined by the fixed-side contact surface 10a formed on the substrate 10, intersect at an arbitrary position on the rotation axis 3a side of the key 4. That is, in the key operation detecting device 5, the base end side plane BP and the contact point side plane CP intersect on the rotation axis 3a side, and a non-parallel positional relationship is formed. In the present embodiment, the key operation detecting device 5 is configured such that one plane of the base portion 6 is included in the contact point side plane CP and the other plane thereof is included in the base end side plane BP, and the thickness of the base portion 6 increases in proportion to the vertical distance from the reference intersection line SL. The key operation detection device 5 is configured such that the contact side plane CP passes through the reference intersection line SL. That is, the key operation detecting device 5 is configured such that the contact point side plane CP, the base end side plane BP, and the tip end side plane TP intersect the reference intersection line SL. The key operation detection device 5 may be configured such that the base-end side plane BP and the tip-end side plane TP intersect at a position other than the reference intersection line SL.
Next, the operation of the dome section 7 and the inner dome section 9 when the key 4 is operated in the key operation detection device 5 according to the first embodiment of the present invention will be specifically described with reference to fig. 2, 3, 4, and 5. As shown in fig. 2, the key operation detection device 5 is configured such that the entire contact surface 8a of the top portion 8 is always in contact with the key 4 of the keyboard device 1, and therefore the top portion 8 is pressed at the same angle as the rotation angle of the key 4 following the operation of the key 4. That is, the amount of deformation of the key operation detection device 5 due to the operation of the key 4 increases in proportion to the vertical distance from the rotation shaft 3 a.
When the key 4 of the keyboard apparatus 1 is not operated, the contact surface 8a of the top portion 8 is in contact with the key 4 without deforming the dome portion 7. That is, since the deformation of the dome portion 7 due to the operation of the key 4 is not generated, the key operation detection device 5 does not generate a reaction force. The movable contact 9a provided in the inner dome 9 of the top 8 does not contact the fixed contact surface 10a of the substrate 10. Therefore, the circuit of the substrate 10 is in a state of not transmitting a signal (off state).
As shown in fig. 5(a), in the case where the key 4 of the keyboard apparatus 1 is operated, the key operation detecting means 5 starts following the operation of the key 4 and the top 8 is pressed. Thus, in the arch portion 7, there are mainly deformation of the arch top 7c toward the inside (base 6) of the arch portion 7 and deformation of the side wall 7a toward the outside of the arch portion 7. That is, in the dome portion 7, the dome 7c and the curved surface 7b are deformed in the pressing direction, and the side wall 7a is deformed in the direction orthogonal to the pressing direction by the reaction force generated by the deformation of the dome 7c and the curved surface 7 b. In the dome portion 7, as the operation amount of the key 4 increases, the modification examples of the side wall 7a, the dome top 7c, and the curved surface 7b increase. The movable contact 9a of the inner dome 9 does not contact the fixed contact surface 10a of the substrate 10. Therefore, the circuit of the substrate 10 is in a state (off state) in which it cannot transmit a signal.
As shown in fig. 5(b), when the key 4 of the keyboard apparatus 1 is further pushed, the manner of deformation of the dome portion 7 of the key operation detection device 5 is converted into a buckling phenomenon of the curved surface 7b accompanied by large deformation. Specifically, the curved surface 7b of the arch portion 7 is deformed in a direction of folding into the inside of the arch portion 7. The bulge portion 7 absorbs most of the amount of pressure of the top portion 8 by the buckling phenomenon of the curved surface 7 b. Then, in the arch part 7, the curved surface 7b of the arch part 7 is completely folded inside the arch part 7, and the side wall 7a of the arch part 7 is deformed in a direction of folding inside the arch part 7. The dome portion 7 absorbs most of the amount of pressure of the top portion 8 by the buckling phenomenon of the side wall 7a and the curved surface 7 b. This reduces the amount of deformation of the side wall 7a and the amount of deformation of the dome 7c in the dome 7. In the inner dome 9, the movable contact 9a comes into contact with the fixed contact surface 10a of the substrate 10 due to the deformation of the dome 7. Therefore, the circuit of the substrate 10 is switched to a state (on state) in which a signal can be transmitted.
In this way, the key operation detection device 5 is configured such that the dome 7c of the dome 7 is pushed into the hollow interior surrounded by the side wall 7a by pushing the dome 8, and the side wall 7a and the curved surface 7b are deformed while being folded into the hollow interior. Meanwhile, the key operation detection device 5 is configured such that the movable-side contact 9a of the inner dome 9 provided on the top 8 is in contact with the fixed-side contact surface 10a of the substrate 10. Thus, in the key operation detection device 5, a reaction force against the pressing of the dome portion 8 is generated by the deformation of the dome portion 7, and the circuit of the substrate 10 is switched to a state (on state) in which a signal can be transmitted.
Since the key operation detection device 5 is configured such that the portion other than the substrate 10 is formed of an elastic member, the portion is elastically deformed by the pressing operation of the operator on the key 4 to generate a reaction force, and the portion is restored to the original dome shape by releasing the pressing force. Although it is necessary to return the key 4 to the initial state (the state in which the key 4 is not operated) by releasing the pressing operation, a spring or a hammer (not shown) for returning the key 4 may be separately provided, and the key 4 may be returned to the initial state by the action of the spring or the hammer, or the position of the key 4 may be returned to the initial state (the state in which the key 4 is not operated) by the returning force of the key manipulation detecting means 5 itself.
As shown in fig. 3, the key operation detection device 5 is configured such that the protruding height of the dome portion 7 increases in proportion to the vertical distance from the reference intersection line SL, and therefore, although the amount of depression of the top portion 8 increases in proportion to the vertical distance from the rotary shaft 3a of the key 4, it is possible to suppress variation in the deformation ratio of the dome portion 7 on the side far from and near the rotary shaft 3 a. Therefore, the bulge portion 7 is deformed at a uniform rate as a whole. For example, as shown in fig. 5(a) and 5(b), in the dome section 7, the ratio of the deformed protrusion height H1 to the protrusion height H1, which is the portion of the apex section 8 having the largest amount of pressure, that is, the portion away from the rotation axis 3a, and the ratio of the deformed protrusion height H2 (the amount of buckling) to the protrusion height H2, which is the portion close to the rotation axis 3a, which is the portion having the smallest amount of pressure of the apex section 8 are similar.
In the conventional key operation detection device, the base end side plane BP and the tip end side plane TP are formed in parallel, and therefore the proportions of deformation of the dome portion 7 on the near side and the far side from the rotating shaft 3a are different. That is, the camber portion 7 is deviated between the side close to the rotation axis 3a and the side far from the rotation axis during occurrence of the buckling phenomenon, and the difference in the ratio of the buckling amount is large. Therefore, in the conventional key operation detection device, the component force in the shearing direction of the pressing force applied to the movable contact 9a is likely to be generated due to the non-uniform proportional deformation of the dome portion 7.
On the other hand, in the key operation detection device 5, even if the amount of depression of the dome 8 by the operation of the key 4 of the keyboard apparatus 1 increases in proportion to the vertical distance from the rotation shaft 3a, the proportion of the amount of deformation of the dome 7 can be made nearly uniform over the entire circumference. That is, the camber portion 7 is difficult to be deviated during occurrence of the buckling phenomenon on the near side and the far side with respect to the rotation shaft 3a, and the ratio of the buckling amount on the near side and the far side with respect to the rotation shaft 3a is approximate. Therefore, in the key operation detection device 5, the dome section 7 is deformed uniformly over the entire circumference, and thus a component force in the shearing direction of the pressing force applied to the movable contact 9a is less likely to be generated (see the black arrow in fig. 5 (b)).
Further, as shown in fig. 4, since the key operation detection device 5 is configured such that the thickness of the base portion 6 increases in proportion to the vertical distance from the reference intersection line SL, although the amount of pressing the top portion 8 increases in proportion to the vertical distance to the rotation axis 3a of the key 4, it is possible to suppress variation in the proportion of the amount of movement of the inner dome portion 9 on the far side or the close side from the rotation axis 3 a. Therefore, the inner arcuate portion 9 moves at a uniform ratio as a whole. For example, as shown in fig. 5(a) and 5(c), in the inner dome 9, the ratio of the distance S1 after the movement with respect to the distance S1 to the fixed-side contact surface 10a, which is the portion of the apex 8 having the largest amount of pressure, that is, the portion away from the rotation axis 3a, and the ratio of the distance S2 after the movement with respect to the distance S2 to the fixed-side contact surface 10a, which is the portion of the apex 8 having the smallest amount of pressure, that is, the portion closer to the rotation axis 3a, are similar.
In the conventional key operation detecting device, the contact side plane CP and the base end side plane BP are formed in parallel, and therefore the moving ratio of the movable contact 9a to the inner dome 9 is different between the distance from the side closer to the rotating shaft 3a and the distance from the movable contact to the fixed contact surface 10 a. That is, the inner arcuate portion 9 is deviated during contact with the fixed-side contact surface 10a on the near side and the far side from the rotational shaft 3 a. Therefore, in the conventional key operation detection device, a non-uniform pressing force is applied to the inner dome 9, and a component force in the shearing direction of the pressing force applied to the movable contact 9a is likely to be generated.
On the other hand, in the key operation detecting device 5, even if the amount of depression of the top 8 by the operation of the key 4 of the keyboard apparatus 1 increases in proportion to the vertical distance to the turning shaft 3a, the moving proportion of the movable side contact 9a with respect to the distance from the inner dome 9 to the fixed side contact surface 10a on the near side and the far side from the turning shaft 3a is nearly uniform. That is, the inner dome 9 is less likely to be displaced while the movable contact 9a is in contact with the fixed contact surface 10a, on the near side and the far side of the inner dome 9 with respect to the rotation shaft 3 a. Therefore, in the key operation detection device 5, a uniform pressing force is applied to the inner dome 9, and a component force in the shearing direction of the pressing force applied to the movable contact 9a is less likely to be generated (see black arrows in fig. 5 (c)).
In this way, in the key operation detection device 5, the rate of deformation of the dome section 7 and the rate of movement of the inner dome section 9 are nearly uniform, and it is difficult to generate a component force in the shearing direction of the pressing force applied to the movable contact 9 a. Thus, the key operation detection device 5 can stably maintain the contact state of the contacts while suppressing the occurrence of chattering caused by sliding or floating between the fixed-side contact surface 10a and the movable-side contact 9 a.
< second embodiment >
Next, a key operation detection device 11, which is a second embodiment of the operation element operation detection device according to the present invention, will be described with reference to fig. 6. Note that the key operation detection device 11 of the present embodiment is applied in place of the key operation detection device 5 in the keyboard device 1 shown in fig. 1, and the same portions are denoted by using the names, reference numerals, and reference numerals used in fig. 1 and fig. 2 and the description thereof, and in the following embodiments, the detailed description thereof will be omitted for the same points as those in the above-described embodiments, and the description will be centered on the differences. The key operation detection device 11 is a device that generates a reaction force against the operation of the key 4 as an operation element and transmits a signal against the operation of the key 4, and includes: a base portion 6 made of an elastic member such as silicone rubber, a raised portion 7, a top portion 8, an inner raised portion 12, and a substrate 10 made of an insulating base material.
As shown in fig. 6(a), the inner dome 12 changes the signal transmission state (on state or off state) in the circuit of the substrate 10 in response to a signal for detecting the operation of the key 4. A flat surface facing the fixed-side contact surface 10a of the substrate 10 is formed at the tip of the inner dome 12 serving as the movable-side contact portion, and a movable-side contact, i.e., a movable-side contact surface 12a whose surface is covered with a conductive material such as carbon is provided. As shown in fig. 6(b), the movable-side contact surface 12 is formed in the inner dome 12 so as to be parallel to the fixed-side contact surface 10a when it contacts the fixed-side contact surface 10 a. The movable contact surface 12a of the inner dome 12 is in contact with the fixed contact surface 10a, and the signal transmission state of the circuit of the substrate 10 is switched to a signal transmission state (on state).
Since the key operation detecting device 11 is configured such that the fixed contact surface 10a and the movable contact surface 12a are in contact in a parallel state, the entire movable contact surface 12a is in contact with the fixed contact surface 10a almost simultaneously although the amount of depression of the top 8 increases in proportion to the vertical distance from the rotation axis 3a of the key 4.
In the conventional key operation detecting device, since the fixed contact surface 10a and the movable contact surface 12a are configured to contact in an inclined state, variation is likely to occur between the movable contact surface 12a on the near side and the far side from the rotating shaft 3a while contacting the fixed contact surface 10 a. Therefore, in the conventional key operation detection device, when the movable contact surface 12a contacts the fixed contact surface 10a, a non-uniform pressing force is applied to the internal dome portion 12, and a component force in the shearing direction of the pressing force applied to the movable contact surface 12a is likely to be generated.
On the other hand, in the key operation detection device 11, on the near side and the far side of the movable side contact surface 12a from the rotational shaft 3a, a deviation is less likely to occur during contact with the fixed side contact surface 10 a. Therefore, in the key operation detection device 11, a uniform pressing force is applied to the inner dome 12, and a component force in the shearing direction of the pressing force applied to the movable contact surface 12a is less likely to be generated.
The moving ratio of the movable contact surface 12a of the key operation detection device 11 configured as described above is nearly uniform, and a component force in the shearing direction of the pressing force applied to the movable contact surface 12a is less likely to be generated. Thus, the key operation detection device 11 can stably maintain the contact state of the contacts while suppressing the occurrence of chattering caused by sliding or floating between the fixed-side contact surface 10a and the movable-side contact surface 12 a.
< third embodiment >
Next, a key operation detection device 13, which is a third embodiment of the operation element operation detection device according to the present invention, will be described with reference to fig. 7. The key operation detection device 13 of the present embodiment is applied in place of the key operation detection device 5 or the key operation detection device 11 in the keyboard device 1 shown in fig. 1, and names, reference numerals, and reference numerals used in fig. 1 and 2 and the description thereof are used. The key operation detection device 13 is a device that generates a reaction force against the operation of the key 4 as an operation element and transmits a signal against the operation of the key 4, and includes: a base portion 6 made of an elastic member such as silicone rubber, an inner raised portion 9, a raised portion 14, a top portion 15, and a substrate 10 made of an insulating base material.
As shown in fig. 7, the arch portion 14 is formed in a hollow arch shape bulging from the other side plane of the base portion 6 toward the keys 4 of the keyboard apparatus 1. Specifically, the arch portion 14 is formed such that, when viewed from the other side of the base portion 6 in plan view, a pair of separated circular arcs of different diameters are connected to each other by a straight line, and a side wall 14a of an elongated circular shape (elongated hole shape) protrudes from the other side plane. Further, a raised top 14c is formed on the projecting side of the side wall 14a of the raised portion 14 so as to cover the space surrounded by the side wall 14 a. The side wall 14a and the arch top 14c of the arch portion 14 are smoothly connected and integrated via a curved surface 14 b.
The top portion 15 is formed in a solid block shape protruding from the dome top 14c of the dome portion 14 toward the key 4 of the keyboard apparatus 1. Specifically, the top portion 15 is formed such that, when viewed from the other side of the base portion 6 in plan view, an oblong table in which a pair of separate arcs of different diameters are connected to each other by a straight line protrudes from the arch top 14c of the arch portion 14. The apex portion 15 is disposed such that the small diameter side faces the small diameter side of the crown portion 14 and the longitudinal centerline coincides with the longitudinal centerline of the crown portion 14.
Similarly to fig. 1, the dome portion 14 of the key operation detection device 13 formed in an oblong shape when viewed from the other side of the base portion 6 in plan view is arranged such that the smaller diameter side is directed toward the reference intersecting line SL (the rotational axis 3a side of the key 4, see fig. 1) and the longitudinal center line is perpendicular to the reference intersecting line SL. The key operation detection device 13 is configured such that the cross-sectional shape of the dome portion 14 (the length (width) or height of the cross-sectional shape of the dome portion 14) on a plane (see fig. 7 b) parallel to the reference intersecting line SL (see fig. 7 a) and perpendicular to the base end side plane BP (the other side plane of the base portion 6) is enlarged as the perpendicular distance to the reference intersecting line SL is increased (see fig. 7 c).
that is, with respect to the sectional shape (length (width) or height of the sectional shape) of the dome portion 14, the sectional shape of the dome portion 14 is reduced as the vertical distance from the reference intersecting line SL to the sectional position becomes smaller from the vertical distance from the reference intersecting line SL to the reference position, based on the shape of the dome portion 14 estimated from the sectional shape of an arbitrary predetermined reference position (for example, Y-Y sectional position in fig. 7) (see Z-Z sectional view in fig. 7 (c)). Similarly, the cross-sectional shape of the crown portion 14 is enlarged as the vertical distance from the reference intersection line SL to the cross-sectional position is increased from the vertical distance from the reference intersection line SL to the reference position (see fig. 7(c) X-X sectional view).
specifically, as shown in fig. 7(a) and 7(b), the raised portion 14 is configured such that the projecting height of the side wall 14a increases in proportion to the vertical distance from the reference intersection line SL, and the pitch of the side wall 14a in the direction parallel to the reference intersection line SL (the short side direction of the raised portion 14) and the radius of curvature of the curved surface 14b increase in proportion to the vertical distance from the reference intersection line SL. The width of the top portion 15 in a direction parallel to the reference intersection line SL (the short side direction of the top portion 15) increases in proportion to the vertical distance from the reference intersection line SL.
The key operation detection device 13 configured as described above is configured such that the shapes of the dome portion 14 and the dome portion 15 are increased in accordance with the amount of pressing of the dome portion 15 which increases in proportion to the vertical distance from the rotation shaft 3a of the key 4. That is, since the shapes of the dome portion 14 and the top portion 15 are increased in proportion to the vertical distance from the reference intersection line SL (the rotation axis 3a), even if the amount of pressing of the top portion 15 by the operation of the keys 4 of the keyboard apparatus 1 is increased in proportion to the vertical distance from the rotation axis 3a, the proportion of the amount of deformation of the dome portion 14 is further approximated uniformly over the entire circumference. Therefore, the arcuate portions 14 are less likely to be deviated during the occurrence of the buckling phenomenon on the near side and the far side from the rotational shaft 3a, and the ratio of the buckling amount is approximated. Therefore, in the key operation detection device 13, the component force in the shearing direction of the pressing force applied to the movable contact 9a is less likely to be generated due to the uniform deformation over the entire circumference of the dome portion 14. Thus, the key operation detection device 13 can stably maintain the contact state of the contacts while suppressing the occurrence of chattering caused by sliding or floating between the fixed-side contact surface 10a and the movable-side contact 9 a.
< fourth embodiment >
Next, a key operation detection device 16, which is a fourth embodiment of the operation element operation detection device according to the present invention, will be described with reference to fig. 8.
The key operation detection device 16 of the present embodiment has the same shape as that of the first embodiment, the second embodiment, or the third embodiment in a plan view (the other side of the base 6 in a plan view); in side view, as shown in fig. 8, a reaction force with respect to the operation of the operation element, i.e., the key 4 is generated, and a signal with respect to the operation of the key 4 is transmitted; the disclosed device is provided with: a base portion 6 made of an elastic member such as silicone rubber, a top portion 8, an inner raised portion 9, a raised portion 17, and a substrate 10 made of an insulating base material.
The arch portion 17 is formed in a hollow arch shape bulging from the other side plane of the base portion 6 toward the keys 4 of the keyboard apparatus 1. Specifically, in the raised portion 17, one of the side walls 17a on the opposite side from the reference intersecting line SL, that is, one of the side walls 17a on the longitudinal direction side which is distant from the rotation axis 3a (see fig. 1) of the key 4, protrudes from the base portion 6 so as to be in an arc shape having a radius R with the reference intersecting line SL as the arc center. In the present embodiment, the key operation detection device 16 is not limited to the configuration in which the side wall 17a on the opposite side from the reference intersecting line SL is projected in an arc shape around the reference intersecting line SL, and the side wall 17a on the reference intersecting line SL side may also be projected in an arc shape around the reference intersecting line SL.
The key operation detection device 16 configured as described above is configured such that the longitudinal side surface of the dome portion 17 is similar to the rotational locus of the key 4. That is, the key operation detection device 16 is configured so that the distance between the top 8 and the side wall 17a does not increase even if the top 8 is pressed following the operation of the key 4. Therefore, the dome portion 17 of the key operation detection device 16 deforms at a uniform rate over the entire circumference, and thus a component force in the shearing direction of the pressing force applied to the movable contact 9a is less likely to be generated. Thus, the key operation detection device 16 can stably maintain the contact state of the contacts while suppressing the occurrence of chattering caused by sliding or floating between the fixed-side contact surface 10a and the movable-side contact 9 a.
< other embodiments >
although the embodiments of the key operation detection devices 5, 11, 13, and 16 according to the present invention have been described as being applied to the keyboard device of the electronic keyboard instrument, the present invention is not limited to this, and any device may be used as long as it includes an operation element to be operated. As another embodiment of the key operation detection devices 5, 11, 13, and 16 according to the first to fourth embodiments, the reference intersecting line SL may be aligned with the axial center of the rotating shaft 3a of the key 4.
for example, as shown in fig. 9, in the key operation detection device 5 of the first embodiment, the reference intersecting line SL is configured to coincide with the axis of the rotary shaft 3a of the key 4, and the ratio of the projecting height of the side wall 7a of the dome 7 to the amount of depression of the dome 8 by the operation of the key 4 is made uniform over the dome 7. That is, the proportion of deformation of the dome portion 7 caused by the operation of the key 4 is uniform as a whole. Therefore, the amount or manner of deformation in the dome portion 7 is more uniform than in the case where the reference intersecting line SL does not coincide with the axis of the rotary shaft 3a of the key 4. Further, the ratio of the thickness of the base portion 6 to the amount of depression of the top portion 8 caused by the operation of the key 4 is uniform as a whole. Therefore, in the inner dome 9, the moving ratio of the movable-side contact 9a with respect to the distance from the movable-side contact 9a to the fixed-side contact surface 10a by the operation of the key 4 is uniform. That is, the movable contact 9a and the fixed contact surface 10a are in contact with each other more uniformly than in the case where the reference intersecting line SL does not coincide with the axis of the rotary shaft 3a of the key 4. Thus, the key operation detection device 5 can stably maintain the contact state of the contacts while suppressing the occurrence of chattering caused by sliding or floating between the movable-side contact 9a and the fixed-side contact surface 10 a.
The key operation detection devices 5, 11, 13, and 16 of the present invention are not limited to the above, but one plane of the base portion 6 is included in the contact point side plane CP, and the other plane of the base portion 6 is included in the base end side plane BP. When the distance between the contact-side plane CP and the base-side plane BP exceeds the allowable range of the thickness of the base 6, as a modification of the key operation detection device 5, 11, 13, 16, only the peripheral portion of the intersection line BL of the base 6 may be included in the base-side plane BP, and the other portions may be set to an appropriate thickness.
Specifically, when the distance between the contact-side plane CP and the base-side plane BP is smaller than the lower limit value of the thickness of the base 6 (for example, the minimum value at which the base is easily torn or the strength cannot be secured if the distance is smaller), the key operation detection device 5 is configured such that the thickness of the base 6 as a whole is within an appropriate range by forming the recess 6a so that only the peripheral portion of the intersection line BL is included in the base-side plane BP and forming the other portions to have an appropriate thickness, as shown in fig. 10 (a). As shown in fig. 10(b), when the distance between the contact-side plane CP and the base-side plane BP is larger than the upper limit value of the thickness of the base portion 6 (for example, the maximum thickness value that cannot be stored in space due to the balance with other members if the distance is larger), the key operation detection device 5 may be configured such that the protrusion portion 6b is formed such that only the peripheral portion of the intersection line BL is included in the base-side plane BP, and the other portions are formed to have an appropriate thickness, thereby making the thickness of the base portion 6 as a whole within an appropriate range. As shown in fig. 10(c), in the key operation detection device 5, when the reference intersecting line SL is set near the key operation detection device 5, the distance between the contact side plane CP and the base side plane BP is smaller at the base 6 on the side of the reference intersecting line SL than the lower limit value of the thickness of the base 6, and the distance between the contact side plane CP and the base side plane BP is larger at the base 6 on the side opposite to the reference intersecting line SL than the upper limit value of the thickness of the base 6. In this case, the key operation detecting device 5 may be configured such that the thickness of the base portion 6 as a whole is within an appropriate range by forming the concave portion 6a so that only the portion around the intersection line BL smaller than the lower limit value of the thickness is included in the base end side plane BP and forming the convex portion 6b so that only the portion around the intersection line BL larger than the upper limit value of the thickness is included in the base end side plane BP.
In the key operation detection device 5, the shape of the dome portion 7 is an oval when viewed from the other side of the base portion 6 in plan view, but the invention is not limited thereto. For example, in the key operation detection device 5, the base portion 6 may be configured to have a circular shape or an elliptical shape in a plan view from the other side. In the key operation detection device 5, not only the shape of the dome portion 7 but also the deformation form of the dome portion 7 can be adjusted by adjusting the thicknesses of the side wall 7a, the curved surface 7b, and the dome top 7c of the dome portion 7. Thus, the key operation detection device 5 can stably maintain the contact state of the contacts while suppressing the occurrence of chattering caused by sliding or floating between the fixed-side contact surface 10a and the movable-side contact 9 a.
In each of the embodiments, the top portions 8 and 15 of the key operation detection devices 5, 11, 13, and 16 are not limited to being solid, and may protrude in a cylindrical shape from the peripheral edges of the domes 7c, 14c, and 17c of the domes 7, 14, and 17.
Although the examples in which the contact surfaces of the top portions 8, 15 of the key operation detection devices 5, 11, 13, 16 and the key 4 are always in contact with each other from the first to fourth embodiments have been described, the key 4 may be in contact with each other from the middle of the operation stroke. Alternatively, the dome portion 7 may be slightly deformed even when the key 4 is not operated.
In each embodiment, an example of a shaft shape is shown as a rotation fulcrum of the operation element (key 4), but the present invention is also applicable to an operation element of a type in which a thin plate-shaped hinge portion is provided on a rotation end side of the operation element and the hinge portion is bent to rotatably support the operation element. The hinge portion at this time corresponds to a pivot.
As a method of fixing the base 6 of the key operation detection devices 5, 11, 13, and 16 to the substrate 10, an example in which a fixing protrusion is formed on one side surface of the base 6 and fixed to the substrate 10 is shown, but a method in which a fixing protrusion is provided on the base 10 and fixed by inserting a hole formed in the base 6, a method in which the fixing protrusion is fixed to the substrate 10 by adhesion, or another method may be used as long as the fixing to the substrate 10 is possible.
Description of the reference numerals
3 a: a rotating shaft; 4: a key; 5: a key operation detection device; 6: a base; 7: an arching portion; 8: a top portion; 9: an inner arching portion; 10: a substrate; 10 a: a fixed side contact surface; and (3) CP: a contact side plane; BP: a base end side plane; TP: a front end side plane.
Claims (8)
1. An operation element operation detection device includes:
A fixed-side contact portion provided on a machine base having a fixed-side contact surface, the machine base rotatably supporting an operating element that rotates about a rotation fulcrum;
a base disposed directly or indirectly on the machine;
An arch portion bulging from the base portion;
A tip portion provided at a tip end of the arch portion on a side of the bulge portion, and pressed by the operating element toward a side close to the fixed-side contact portion;
a movable contact portion provided on the top portion and capable of contacting the fixed contact portion;
The dome portion is elastically deformed when the top portion is pressed by the operating element, the fixed-side contact portion comes into contact with the movable-side contact portion, thereby detecting the operation of the operating element, the operating element operation detecting device being characterized in that,
A base end side plane including an intersection line of the base portion and the crown portion adjacent to each other and a tip end side plane including an intersection line of the crown portion and the tip portion adjacent to each other intersect on a side close to a rotation fulcrum of the operating element,
The base end side plane and a contact side plane including the fixed side contact surface formed in the fixed side contact portion intersect on a side close to a rotation fulcrum of the operating element so that a deviation does not occur in a period in which the movable side contact portion contacts the fixed side contact portion on a near side and a far side from the rotation fulcrum.
2. The operating element operation detecting device according to claim 1,
a movable-side contact surface parallel to the fixed-side contact surface when the fixed-side contact portion and the movable-side contact portion are in contact is formed on the movable-side contact portion.
3. The operating element operation detecting device according to claim 1 or 2,
the operating element is rotated about a rotation axis passing through the rotation fulcrum,
An intersection of the base end side plane and the tip end side plane is configured to substantially coincide with the rotation axis of the operation element.
4. The operating element operation detecting device according to claim 1 or 2,
The operating element is rotated about a rotation axis passing through the rotation fulcrum,
an intersection line of the contact-side plane and the base-side plane is configured to substantially coincide with the rotation axis of the operating element.
5. The operating element operation detecting device according to claim 1 or 2,
the length of the cross-sectional shape of the crown portion and the apex portion on a plane parallel to the intersection line of the base end side plane and the tip end side plane and perpendicular to the base end side plane is configured to increase as the distance from the intersection line of the base end side plane and the tip end side plane increases.
6. The operating element operation detecting device according to claim 1 or 2,
An intersection of the base end side plane and the tip end side plane and an intersection of the base end side plane and the contact side plane are substantially coincident with each other.
7. The operating element operation detecting device according to claim 1 or 2,
A side surface of the dome portion on the opposite side of the pivot point of the operating element is formed in an arc shape with an intersection line of the base end side plane and the tip end side plane as a center.
8. The operating element operation detecting device according to claim 1 or 2,
The fixed-side contact surface is formed on a second plane portion which is formed on the machine table and intersects with the first plane portion formed on the machine table.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-122902 | 2014-06-13 | ||
| JP2014122902 | 2014-06-13 | ||
| PCT/JP2015/062365 WO2015190177A1 (en) | 2014-06-13 | 2015-04-23 | Operator operation detection device |
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| Publication Number | Publication Date |
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| CN106415709A CN106415709A (en) | 2017-02-15 |
| CN106415709B true CN106415709B (en) | 2019-12-10 |
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| CN201580031328.2A Active CN106415709B (en) | 2014-06-13 | 2015-04-23 | operation element operation detection device |
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| JP (1) | JP6525003B2 (en) |
| CN (1) | CN106415709B (en) |
| WO (1) | WO2015190177A1 (en) |
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| WO2018220755A1 (en) * | 2017-05-31 | 2018-12-06 | ヤマハ株式会社 | Reaction force generation unit |
| JP7027717B2 (en) * | 2017-08-01 | 2022-03-02 | カシオ計算機株式会社 | Reaction force generator and electronic keyboard instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02125295A (en) * | 1988-11-04 | 1990-05-14 | Yamaha Corp | Key structure of electronic musical instrument |
| JPH05282963A (en) * | 1992-03-31 | 1993-10-29 | Yamaha Corp | Elastic switch for electronic musical instrument |
| JPH08123408A (en) * | 1994-10-28 | 1996-05-17 | Yamaha Corp | Keyboard device of electronic keyboard musical instrument |
| JPH11242476A (en) * | 1998-02-25 | 1999-09-07 | Casio Comput Co Ltd | Keyboard device |
| JP2010224146A (en) * | 2009-03-23 | 2010-10-07 | Kawai Musical Instr Mfg Co Ltd | Keyboard device of keyboard instrument |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2718336B2 (en) * | 1992-12-28 | 1998-02-25 | ヤマハ株式会社 | Electronic musical instrument keyboard device |
| JP5707693B2 (en) * | 2009-11-16 | 2015-04-30 | ヤマハ株式会社 | Electronic keyboard instrument |
-
2015
- 2015-04-23 JP JP2016527681A patent/JP6525003B2/en active Active
- 2015-04-23 WO PCT/JP2015/062365 patent/WO2015190177A1/en active Application Filing
- 2015-04-23 CN CN201580031328.2A patent/CN106415709B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02125295A (en) * | 1988-11-04 | 1990-05-14 | Yamaha Corp | Key structure of electronic musical instrument |
| JPH05282963A (en) * | 1992-03-31 | 1993-10-29 | Yamaha Corp | Elastic switch for electronic musical instrument |
| JPH08123408A (en) * | 1994-10-28 | 1996-05-17 | Yamaha Corp | Keyboard device of electronic keyboard musical instrument |
| JPH11242476A (en) * | 1998-02-25 | 1999-09-07 | Casio Comput Co Ltd | Keyboard device |
| JP2010224146A (en) * | 2009-03-23 | 2010-10-07 | Kawai Musical Instr Mfg Co Ltd | Keyboard device of keyboard instrument |
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| Publication number | Publication date |
|---|---|
| CN106415709A (en) | 2017-02-15 |
| JP6525003B2 (en) | 2019-06-05 |
| JPWO2015190177A1 (en) | 2017-04-27 |
| WO2015190177A1 (en) | 2015-12-17 |
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