JP2012243613A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch device that allows a rotary operation part to be smoothly and satisfactorily rotated to permit a switching operation even when the rotary operation part is rotated while being pressed at a position that departs from the center of rotation of the rotary operation part.SOLUTION: The switch device includes: an upper case 2 of a musical instrument body 1; a movable support part 10 that is elastically and displaceably held by the upper case 2; a rotary operation part 11 that is rotatably disposed on the movable support part 10; and a detection part 12 which is disposed on the movable support part 10, and detects a rotational position obtained by the rotary operation of the rotary operation part 11. Therefore, when the rotary operation of the rotary operation part 11 is performed while the rotary operation part 11 is pressed at a position that departs from the center of rotation of the rotary operation part 11, the movable support part 10 can be elastically inclined together with the rotary operation part 11 and the detection part 12 with respect to the upper case 2 by a pressing force during the rotary operation. Accordingly, all of the movable support part 10, the rotary operation part 11 and the detection part 12 can be kept in a certain state all the time.

Description

  The present invention relates to a rotary switch device that detects a rotational position associated with a rotational operation.

  For example, as described in Patent Document 1, a rotary switch device includes a rotary operation unit having an operation knob provided on a pointer display unit and an operation panel that rotatably holds the rotary operation unit. 2. Description of the Related Art There is known a configuration including a housing and a switch portion that is provided in the housing and detects a rotational position of a rotation operation unit.

JP 2005-347135 A

  Since this type of switch device rotatably holds the rotary operation unit in a casing which is an operation panel, an operation cylindrical unit provided in a pointer display unit of the rotary operation unit and a rotary operation unit provided in the casing And an annular holding groove portion to be inserted in a rotatable state.

  In this case, the operation cylindrical portion of the rotation operation portion is slidably in contact with the inner peripheral surface on the small diameter side in the holding groove portion of the casing, and the outer peripheral surface of the operation cylindrical portion is the holding groove portion of the casing. It is slidably brought into contact with the inner peripheral surface on the large diameter side through the cylindrical portion of the fixed display portion, and is held rotatably in this state. In addition, a small-diameter mounting boss for mounting the switch shaft of the switch unit is provided on the pointer display unit of the rotation operation unit.

  As a result, when the rotation operation unit is rotated, the switch shaft of the switch unit mounted on the mounting boss of the pointer display unit in the rotation operation unit rotates with the rotation of the rotation operation unit. The rotation position is detected by the switch unit as the rotation position of the rotation operation unit.

  However, in such a rotary switch device, the switch unit is fixed to the housing, and the operation cylinder portion of the rotation operation unit is inserted into the holding groove portion of the housing via the cylindrical portion of the fixed display unit. Since the rotation knob is held rotatably, there is a problem that the rotation operation unit cannot be smoothly rotated unless the operation knob of the rotation operation unit rotates about the switch shaft of the switch unit.

  In other words, in such a rotary switch device, when the operation knob is rotated while pressing with a finger a position shifted from the rotation center of the operation knob of the rotation operation unit, the rotation operation unit is inclined with respect to the switch shaft of the switch unit. And the operation cylinder part of the rotation operation part is rotated while being pushed down so as to incline in the holding groove part of the housing. There is a problem that the rotating operation unit does not rotate smoothly because it comes into contact with and slides on the peripheral surface and the inner peripheral surface on the large diameter side.

  The problem to be solved by the present invention is that the rotation operation unit can be rotated smoothly and satisfactorily and the switch operation can be performed even if the rotation operation unit is rotated while pushing a position shifted from the rotation center of the rotation operation unit. A switch device is provided.

  The present invention includes a housing, a movable support portion that is elastically displaceably held in the housing while being exposed to the outside of the housing, and the movable support portion that is exposed to the outside of the housing. A rotation operation unit that is rotatably arranged, and a detection unit that is provided in the movable support unit in a state of being located inside the housing and detects a rotation position associated with the rotation operation of the rotation operation unit. It is the switch apparatus characterized by the above.

  According to the present invention, when the rotation operation unit is rotated while pressing a position shifted from the rotation center of the rotation operation unit, the movable support unit and the detection unit are detected with respect to the casing by the pressing force at the time of the rotation operation. Since it can be elastically tilted together with the unit, all of the movable support unit, the rotation operation unit, and the detection unit can always be kept in a constant state. For this reason, even if the rotation operation unit is rotated while pressing a position deviated from the rotation center of the rotation operation unit, the rotation operation unit can be smoothly and satisfactorily rotated to perform a switch operation.

It is the top view which showed one Embodiment which applied this invention to the electronic keyboard musical instrument. It is an expanded sectional view in the AA arrow of the electronic keyboard musical instrument shown by FIG. FIG. 3 is an enlarged cross-sectional view of a main part showing the switch device of the electronic keyboard instrument shown in FIG. 2. FIG. 4 is an enlarged plan view of a main part showing the switch device shown in FIG. 3. It is an expanded sectional view of the principal part which showed the state which rotated the switch apparatus shown by FIG. It is an expanded sectional view of the principal part which showed the modification of the sliding protrusion part in embodiment shown by FIG.

Hereinafter, an embodiment in which the present invention is applied to an electronic keyboard instrument will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the electronic keyboard instrument includes a musical instrument main body 1. The musical instrument main body 1 includes an upper case 2 and a keyboard chassis 3 which is a lower case.

  As shown in FIG. 2, the keyboard chassis 3 also serves as a lower case. As shown in FIGS. 1 and 2, a plurality of keys 4 are arranged in parallel on the upper surface located on the front side (left side in FIG. 2) of the keyboard chassis 3. The plurality of keys 4 are a white key and a black key, and each rear end portion (right end portion in FIG. 2) is attached to the keyboard chassis 3 so as to be vertically rotatable.

  As shown in FIG. 1 and FIG. 2, the upper case 2 includes a plurality of keys 4 located from the upper end of each rear end portion (right end portion in FIG. 2) to the rear end portion of the keyboard chassis 3, and the plurality of keys 4. Are arranged on a keyboard chassis 3 located at positions corresponding to both sides in the arrangement direction (left and right direction in FIG. 1). Accordingly, the upper case 2 is configured such that the plurality of keys 4 are exposed upward.

  As shown in FIG. 1, the upper case 2 is provided with a speaker unit 5, a display unit 6, and a switch unit 7. The speaker unit 5 includes a plurality of speakers 5 a to 5 c, which are provided on both sides of the upper case 2 in the arrangement direction of the keys 4. The display unit 6 is a flat display panel such as a liquid crystal display panel or an EL (electroluminescence) display panel. The display unit 6 is provided in a substantially central part of the upper case 2 via a decorative panel 6a, and various types necessary for a keyboard instrument. The information is displayed electro-optically.

  As shown in FIG. 1, the switch unit 7 includes various switches necessary for a keyboard instrument such as a power switch, a volume switch, and a timbre switch, and also includes a rotary switch device 8. In this case, the switch unit 7 is provided with various switches dispersed in the upper case 2 as shown in FIG. The rotary switch device 8 is provided at a location in the vicinity of the display unit 6 in the upper case 2.

  The rotary switch device 8 is a rotary switch such as a job dial switch, and as shown in FIGS. 2 and 3, a movable support that is held in an elastically displaceable manner in the upper case 2 of the instrument body 1. Unit 10, a rotation operation unit 11 that is rotatably arranged on the movable support unit 10, and a detection unit 12 that is provided on the movable support unit 10 and detects a rotation position associated with the rotation operation of the rotation operation unit 11. I have.

  As shown in FIG. 3, the movable support portion 10 has an operation storage portion 13 in which the rotation operation portion 11 is rotatably arranged, a mounting boss portion 14 for mounting the detection portion 12, and the upper case 2. And an attachment portion 15 attached to be displaceable. As shown in FIGS. 3 and 4, the operation storage portion 13 is formed in a cylindrical shape, and is configured such that the upper portion of the outer peripheral portion 13 a is disposed in a circular opening 2 a provided in the upper case 2. Has been.

  Further, as shown in FIG. 3, a bottom portion 13b is provided at the lower portion of the operation storage portion 13, and a through hole 13c is provided at the center portion of the bottom portion 13b. The mounting boss portion 14 is provided on the lower surface of the bottom portion 13b of the operation storage portion 13 so as to protrude downward. The mounting boss portion 14 has a screw hole 14a opened on the lower side thereof. Is provided.

  Further, as shown in FIG. 3, the mounting portion 15 of the movable support portion 10 includes a descending portion 15a that hangs downward from a lower portion of the outer peripheral portion 13a of the operation storage portion 13, and a lower end portion of the descending portion 15a. And a mounting piece 15b protruding toward the outer peripheral side in the circumferential direction. The mounting portion 15 is configured such that the mounting piece 15 b is disposed on the lower surface of the mounting boss 16 provided on the lower surface of the upper case 2. The attachment piece 15b is provided with a screw insertion hole 15c corresponding to the screw hole 16a provided in the attachment boss 16 of the upper case 2.

  In this case, as shown in FIG. 3, the attachment portion 15 is configured such that the attachment piece 15 b is attached to the attachment boss 16 of the upper case 2 so as to be elastically displaceable by the elastic holding mechanism 17. That is, the elastic holding mechanism 17 includes a spring member 18 that elastically presses the movable support portion 10 against the attachment boss 16 of the upper case 2 and an attachment piece 15b of the movable support portion 10 against the attachment boss 16 of the upper case 2. A connection adjusting screw 19 for adjusting the spring force of the spring member 18 against the mounting piece 15b is provided.

  As shown in FIG. 3, the spring member 18 is an elastic biasing member such as a coil spring, and is disposed on the lower surface of the mounting piece 15 of the movable support portion 10. In this state, the mounting piece 15 is attached to the mounting boss of the upper case 2. 16 is configured to be elastically pressed against 16. The washer 19a is arranged on the head side (lower side in FIG. 3) of the connection adjusting screw 19, and in this state, the screw insertion hole of the mounting piece 15b of the movable support portion 10 is passed from the lower side of the spring member 18 through the spring member 18. It is configured to be inserted into 15c, and the inserted tip end portion is screwed into the screw hole 16a of the mounting boss 16 of the upper case 2.

  Thereby, as shown in FIG. 3, the elastic holding mechanism 17 is screwed into the screw hole 16a of the mounting boss 16 of the upper case 2 and tightened so that the spring member 18 is movable by the spring force. The mounting piece 15 b of the mounting portion 15 in the support portion 10 is configured to be elastically pressed against the mounting boss 16 of the upper case 2.

  In this case, the elastic holding mechanism 17 adjusts the fastening force of the screw member 18 to the screw hole 16a of the mounting boss 16 of the upper case 2 as shown in FIG. The spring force of the spring member 18 for pressing against the mounting boss 16 of the case 2 is adjusted.

  Thereby, as shown in FIGS. 3 and 5, when the operation storage portion 13 exposed from the opening 2 a of the upper case 2 is pushed down, the movable support portion 10 causes the attachment piece 15 b of the attachment portion 15 to move to the elastic holding mechanism 17. The whole movable support portion 10 is displaced toward the inside of the upper case 2 (lower side in FIG. 3).

  In this case, as shown in FIG. 5, when the operation storage portion 13 is pushed down from its central portion, the movable support portion 10 is attached to the mounting portion 15 located in the biased direction (left side in FIG. 5). When the mounting piece 15b is pushed down against the spring force of the spring member 18 of the elastic holding mechanism 17, the entire movable support portion 10 is displaced so as to incline to the left in FIG. It has become.

  On the other hand, as shown in FIGS. 3 and 4, the rotation operation unit 11 arranged in the movable support unit 10 is a circular operation arranged in a rotatable state in the operation storage unit 13 of the movable support unit 10. Part 20 and a cylindrical mounting boss part 21 provided at the center of the lower surface of the operation part 20. The circular operation unit 20 is formed in a disk shape that is slightly smaller than the inner diameter of the operation storage unit 13 of the movable support unit 10, and the outer periphery of the operation unit 20 does not contact the inner peripheral surface of the operation storage unit 13. It is comprised so that it can arrange | position in the state which can rotate in the part 13. FIG.

  On the upper surface of the operation unit 20, as shown in FIG. 4, a small circular operation recess 20a into which a fingertip is inserted is provided at a position shifted from the center. Further, as shown in FIG. 3, a sliding projection 20 b that slides in contact with the bottom 13 b of the operation storage unit 13 is provided on the lower surface of the operation unit 20. The sliding protrusion 20b is formed in a cylindrical shape larger than the through hole 13c of the operation storage portion 13, and its lower end is formed in a circular shape.

  Thereby, as shown in FIG. 3, when the operation unit 20 is pushed from above, the rotation operation unit 11 causes the sliding projection 20 b to push down the bottom 13 b in the operation storage unit 13 of the movable support unit 10. The movable support portion 10 is pushed down against the spring force of the spring member 18 in the elastic holding mechanism 17.

  In this case, as shown in FIG. 5, the rotation operation unit 11 is biased by the rotation operation unit 11 when the operation recess 20 a at a position deviated from the center of the operation unit 20 is operated to rotate the rotation operation unit 11. When the position is rotated while being pressed, the sliding protrusion 20b corresponding to the biased position pushes down the bottom 13b of the operation storage portion 13 of the movable support portion 10 to displace the movable support portion 10 so as to tilt. It has become.

  Further, as shown in FIG. 3, the cylindrical mounting boss portion 21 is suspended from the center portion on the lower surface of the operation portion 20, and the lower end portion thereof is provided on the bottom portion 13 b of the operation storage portion 13 of the movable support portion 10. It is comprised so that it may protrude below the operation storage part 13 through the through-hole 13c. The mounting boss portion 21 is formed in a cylindrical shape having a small diameter sufficiently smaller than the through hole 13c of the bottom portion 13b of the operation storage portion 13, and the key portion 21a is axially (in the vertical direction in FIG. ).

  On the other hand, as shown in FIG. 3, the detection unit 12 includes a switch unit 22 that detects a rotational position associated with the rotation operation of the rotation operation unit 11, and a substrate 23 to which the switch unit 22 is attached. It is configured to be attached to the mounting boss portion 14 of the movable support portion 10. The switch unit 22 is a rotary switch, and includes a switch body 24 and a switch shaft 25 that is rotatably attached to the switch body 24.

  As shown in FIG. 3, the switch body 24 detects the rotational position in accordance with the rotational operation of the switch shaft 25 and is attached on the substrate 23. The switch shaft 25 protrudes upward from the inside of the switch main body 24, and the protruding upper end portion is inserted and mounted in the mounting boss portion 21 of the rotation operation unit 11, so that the rotation operation is performed while the rotation operation unit 11 is supported. It is comprised so that it may rotate with the part 11. FIG.

  In this case, as shown in FIG. 3, the switch shaft 25 is provided with a key groove 25a along the axial direction (vertical direction in FIG. 3) on the outer peripheral surface, and is provided in the mounting boss portion 21 in the key groove 25a. The inserted key part 21 a is inserted to rotate integrally with the mounting boss part 21. The substrate 23 is attached to the lower surface of the mounting boss portion 14 of the movable support portion 10 with screws 23a.

  Thereby, as shown in FIG. 3, when the operation unit 20 of the rotation operation unit 11 is rotated, the detection unit 12 transmits the rotation to the switch shaft 25 via the mounting boss unit 21. The switch shaft 25 is rotated, and the switch body 24 is configured to detect the rotation position of the switch shaft 25 accompanying the rotation operation of the rotation operation unit 11 according to the rotation of the switch shaft 25.

  In this case, as shown in FIG. 5, the detection unit 12 performs a rotation operation when the rotation operation unit 11 rotates by operating the operation recess 20 a at a position deviated from the center of the operation unit 20 of the rotation operation unit 11. When the biased position of the portion 11 is pressed, the rotation operation portion 11 and the switch shaft 25 are inclined, and the switch body 24 and the substrate 23 are inclined with the inclination of the switch shaft 25.

Next, a case where such a switch device 8 is assembled to the musical instrument main body 1 will be described.
In this case, first, the switch unit 22 of the detection unit 12 is attached to the substrate 23 to assemble the detection unit 12, and the assembled detection unit 12 is assembled to the movable support unit 10 together with the rotation operation unit 11.

  At this time, the substrate 23 of the detection unit 12 is disposed under the mounting boss portion 14 of the movable support unit 10, and the switch shaft 25 of the switch unit 22 is inserted into the through hole 13 c in the bottom 13 b of the operation storage unit 13 of the movable support unit 10. To be inserted into the operation storage portion 13. In this state, the rotation operation unit 11 is disposed in the operation storage unit 13 of the movable support unit 10 from above, and the switch shaft 25 of the switch unit 22 is inserted into the mounting boss portion 21 of the rotation operation unit 11 in a corresponding manner.

  At this time, as shown in FIG. 3, the key portion 21 a in the mounting boss portion 21 is relatively inserted and mounted in the key groove portion 25 a of the switch shaft 25. Then, the operation unit 20 of the rotation operation unit 11 is disposed in the operation storage unit 13, and the lower end portion of the sliding projection 20 b of the operation unit 20 is in contact with the bottom portion 13 b of the operation storage unit 13. . Thereby, the rotation operation part 11 and the switch part 22 of the detection part 12 are connected in the state which pinched | interposed the movable support part 10. FIG.

  Thereafter, the substrate 23 of the detection unit 12 is attached to the mounting boss portion 14 of the movable support unit 10 with screws 23a. Then, as shown in FIG. 3, the switch unit 22 of the detection unit 12 is fixed to the movable support unit 10, and the rotation operation unit 11 is attached to the movable support unit 10 by the switch unit 22 so as to be rotatable. It is done.

  In this state, the lower end portion of the sliding projection portion 20b provided on the lower surface of the operation portion 20 of the rotation operation portion 11 contacts the bottom portion 13b in the operation storage portion 13 of the movable support portion 10 so as to be slidable. Further, the upper surface of the operation unit 20 of the rotation operation unit 11 is substantially flush with the upper end surface of the outer peripheral portion 13 a of the operation storage unit 13 of the movable support unit 10. In such a state, the operation unit 20 is rotatably disposed in the operation storage unit 13.

  And the movable support part 10 to which the rotation operation part 11 and the detection part 12 were attached is attached to the lower surface in the upper case 2 of the musical instrument main body 1. At this time, the outer peripheral portion 13a of the operation storage portion 13 in the movable support portion 10 is inserted into the circular opening 2a of the upper case 2, and in this state, the attachment piece 15b of the attachment portion 15 in the movable support portion 10 is inserted into the upper case. 2 is arranged on the lower surface of the mounting boss 16 provided on the lower surface. At this time, the screw insertion hole 15 c of the attachment piece 15 b of the movable support portion 10 is made to correspond to the screw hole 16 a of the attachment boss 16 of the upper case 2.

  In this state, the spring member 18 of the elastic holding mechanism 17 is disposed below the attachment piece 15b of the movable support portion 10, and the connection adjusting screw 19 is attached to the attachment boss 16 of the upper case 2 from below the spring member 18. . At this time, the washer 19a is disposed on the connection adjusting screw 19, and the distal end side of the connection adjusting screw 19 is inserted into the spring insertion member 15 and the screw insertion hole 15c of the mounting piece 15b of the movable support portion 10, and the inserted connection adjusting screw 19 is inserted. The distal end portion of 19 is screwed into the screw hole 16 a of the mounting boss 16 of the upper case 2, and the connection adjusting screw 19 is tightened.

  Thereby, the movable support part 10 is elastically attached to the upper case 2 by the spring force of the spring member. At this time, when the rotation operation unit 11 disposed in the operation storage unit 13 of the movable support unit 10 is rotated, the rotation operation unit 11, the detection unit 12, and the entire movable support unit 10 are displaced downward. The tightening force of the connection adjusting screw 18 with respect to the mounting boss 16 of the upper case 2 is adjusted so as to be possible.

Next, the operation of such a rotary switch device 8 will be described.
When operating the rotation operation unit 11 of the switch device 8, a fingertip is inserted into the operation recess 20a provided on the upper surface of the operation unit 20 of the rotation operation unit 11, and the operation unit 20 is rotated in the surface direction. . Then, while the sliding protrusion 20b provided on the lower surface of the operation unit 20 of the rotation operation unit 11 slides on the bottom 13b of the operation storage unit 13 of the movable support unit 10, the rotation operation unit 11 is in the operation storage unit 13. Rotate with.

  As a result, as shown in FIG. 3, the mounting boss portion 21 of the rotation operation portion 11 rotates together with the operation portion 20, and the switch shaft 25 of the switch portion 22 attached to the mounting boss portion 21 rotates the rotation operation portion 11. It rotates at the same time. As a result, the switch body 24 of the switch unit 22 detects the rotational position corresponding to the rotational operation of the switch shaft 25.

  In this case, since the operation recess 20a of the operation unit 20 is provided at a position deviated from the center of the operation unit 20, the operation unit 20 is rotated when the rotation operation unit 11 is rotated by inserting a fingertip into the operation recess 20a. 20 rotates while being pushed down so as to be tilted by the fingertip, and the mounting boss portion 21 of the rotation operation unit 11 also rotates while being pushed down so as to be tilted.

  At this time, among the sliding projections 20b that slide while contacting the bottom 13b of the operation storage unit 13 of the movable support unit 10, the sliding projections 20b corresponding to the operation recesses 20a of the operation unit 20 are movable. The bottom portion 13 b of the operation storage portion 13 of the support portion 10 is pushed down against the spring force of the spring member 18 of the elastic holding mechanism 17.

  As a result, the attachment piece 15 b of the attachment portion 15 near the operation recess 20 a at a location deviated from the center of the rotation operation portion 11 is pushed down against the spring force of the spring member 18 of the elastic holding mechanism 17. For this reason, the entire movable support portion 10 is displaced downward while being inclined with respect to the upper case 2. As described above, when the movable support 10 is tilted with respect to the upper case 2, the rotation operation unit 11 and the detection unit 12 attached to the movable support 10 are also tilted together with the movable support 10.

  For this reason, the operation unit 20 of the rotation operation unit 11 maintains the state in which the sliding projection 20b on the lower surface thereof is in contact with the bottom 13b of the operation storage unit 13 of the movable support unit 10 and the upper surface of the operation unit 20. The bottom part 13b of the operation storage part 13 maintains a state parallel to each other. In addition, the mounting boss portion 21 of the rotation operation unit 11 and the switch shaft 25 of the switch unit 22 maintain a state in which both shaft centers coincide.

  Thereby, even when the movable support unit 10, the rotation operation unit 11, and the detection unit 12 are inclined with respect to the upper case 2, the rotation operation unit 11 rotates smoothly in the operation storage unit 13 of the movable support unit 10. At the same time, the switch shaft 25 smoothly rotates according to the rotation of the rotation operation unit 11, so that the switch body 24 of the switch unit 22 improves the rotation position of the rotation operation unit 11 according to the rotation operation of the rotation operation unit 11. To detect.

  At this time, since the movable support portion 10 is tilted together with the rotation operation portion 11 and the detection portion 12 with respect to the upper case 2, the gap between the movable support portion 10 and the rotation operation portion 11 is not widened and is always constant. The interval can be maintained. Therefore, when the rotary operation unit 11 is rotated, there is no risk of injury due to a fingertip being caught in the gap between the movable support unit 10 and the rotary operation unit 11. The operation unit 11 can be rotated.

  Thus, according to the rotary switch device 8, the upper case 2 of the musical instrument main body 1 and the movable support that is elastically displaceably held by the upper case 2 while being exposed to the outside of the upper case 2. Part 10, a rotary operation unit 11 that is rotatably disposed on movable support unit 10 in a state exposed to the outside of upper case 2, a movable support unit 10 that is disposed inside upper case 2, and And a detection unit 12 that detects a rotation position associated with the rotation operation of the rotation operation unit 11. Therefore, even if the rotation operation unit 11 is rotated while pressing a position that is shifted from the rotation center of the rotation operation unit 11, In addition, the rotation operation unit 11 can be rotated well and the detection unit 12 can be favorably switched.

  That is, in this rotary switch device 8, when the rotation operation unit 11 is rotated while pushing a position shifted from the rotation center of the rotation operation unit 11, the movable support unit 10 is moved to the upper case by the pressing force at the time of the rotation operation. 2 can be tilted together with the rotation operation unit 11 and the detection unit 12, so that all of the movable support unit 10, the rotation operation unit 11, and the detection unit 12 can be always kept in a constant state. For this reason, in this rotary switch device 8, even if the rotation operation unit 11 is rotated while pressing a position shifted from the rotation center of the rotation operation unit 11, the rotation operation unit 11 is rotated smoothly and detected. The section 12 can be switched well.

  In this case, since the movable support portion 10 is tilted together with the rotation operation portion 11 and the detection portion 12 with respect to the upper case 2, there is a risk of injury by pinching a fingertip in the gap between the movable support portion 10 and the rotation operation portion 11. The rotation operation unit 11 can be safely rotated. In addition, when an impact is applied to the rotary operation unit 11 from the outside, the impact can be absorbed by the movable support unit 10, so that the detection unit 12 can be well protected from the external impact.

  In addition, the rotary switch device 8 includes an elastic holding mechanism 17 that elastically displaces the movable support portion 10 in accordance with the pressing force when the rotary operation portion 11 is rotated. When the rotation operation unit 11 is rotated while pressing a position deviated from the rotation center of the rotation operation unit 11, if a biased pressing force is applied to the rotation operation unit 11 during the rotation operation of the rotation operation unit 11, according to the biased pressing force. The elastic holding mechanism 17 can tilt the movable support portion 10 with respect to the upper case 2 reliably and satisfactorily.

  That is, the elastic holding mechanism 17 includes a spring member 18 that elastically presses the movable support portion 10 against the upper case 2, and the movable support portion 10 attached to the upper case 2 and the spring member 18 with respect to the movable support portion 10. Since the connection adjusting screw 19 for adjusting the spring force is provided, when a biased pressing force is applied to the rotation operation unit 11 when the rotation operation unit 11 is rotated, the elastic holding mechanism is applied according to the biased pressing force. The 17 spring members 18 can expand and contract, and the movable support portion 10 can be favorably tilted with respect to the upper case 2.

  Further, in the elastic holding mechanism 17, the spring force of the spring member 18 is adjusted by adjusting the tightening force by the connection adjusting screw 19 when the movable support portion 10 is attached to the upper case 2 by the connection adjusting screw 19. Therefore, the pressing force of the movable support portion 10 against the upper case 2 can be adjusted, and the displacement amount of the movable support portion 10 with respect to the upper case 2 can be improved according to the pressing force applied to the rotation operation portion 11. Can be adjusted.

  Further, in this switch device 8, the rotation operation portion 11 is provided with the sliding projection portion 20 b, and the sliding projection portion 20 b is configured to slide in contact with the movable support portion 10. The rotation projection unit 20b can rotate the rotation operation unit 11 smoothly and satisfactorily with respect to the movable support unit 10, and the rotation operation unit 11 can be rotated while pressing a position shifted from the rotation center of the rotation operation unit 11. However, the rotation operation unit 11 can be smoothly and satisfactorily rotated by the sliding projection 20b, and the detection unit 12 can be favorably switched.

  In this case, the sliding protrusion 20b is provided on the lower surface of the operation unit 20 of the rotation operation unit 11, and the rotation operation unit 10 is in a state where the lower end thereof is in contact with the upper surface in the operation storage unit 13 of the movable support unit 10. Since the sliding projection 20b is configured to slide on the lower surface of the operation unit 20 and the movable support unit 10 by the sliding projection 20b. The distance from the upper surface in the storage unit 13 can be kept constant at all times, so that even if the rotation operation unit 11 is rotated while pressing the position deviated from the rotation center of the rotation operation unit 11, the rotation operation unit 11 rotates smoothly and satisfactorily. The operation unit 11 can be rotated.

  In the above-described embodiment, the case where the rotation operation unit 11 is provided with the sliding projection 20b and the sliding projection 20b is brought into contact with the movable support unit 10 to slide is described. For example, as in the modification shown in FIG. 6, a sliding protrusion 30 is provided on the upper surface in the operation storage portion 13 of the movable support portion 10, and the upper end portion of the sliding protrusion 30 is connected to the rotary operation portion 11. You may comprise so that the lower surface of the operation part 20 may be made to contact and slide.

  Even if comprised in this way, the space | interval of the lower surface of the operation part 20 of the rotation operation part 11 and the upper surface in the operation storage part 13 of the movable support part 10 can always be kept constant, and, thereby, the rotation operation part 11 Even if the rotation operation unit 11 is rotated while pushing a position shifted from the rotation center, the rotation operation unit 11 can be rotated smoothly and satisfactorily.

  In the above-described embodiment and its modification, the case where the sliding protrusions 20b and 30 are provided on one of the operation unit 20 of the rotation operation unit 11 and the operation storage unit 13 of the movable support unit 10 has been described. The sliding protrusions 20b and 30 are not necessarily provided. When the sliding protrusions 20 b and 30 are not provided as described above, the rotation operation unit 11 can be rotated into the operation storage unit 13 of the movable support unit 10 by the switch shaft 25 of the switch unit 22 of the detection unit 12. What is necessary is just to comprise so that it may hold | maintain in a state.

  In such a configuration, when the rotation operation unit 11 is rotated by operating the operation recess 20a at a location deviated from the center of the rotation operation unit 11, the rotation is detected by the mounting boss portion 21 of the rotation operation unit 11. The switch unit 22 and the substrate 23 of the unit 12 are pushed down so as to be tilted, and the movable support unit 10 is pushed down so as to tilt in the same direction as the operation unit 20 of the rotation operation unit 11 by the substrate 23 of the detection unit 12. The mounting piece 15b of the mounting portion 15 close to the operation concave portion 20a at a location deviated from the central portion of the portion 11 can be pushed down against the spring force of the spring member 18 of the elastic holding mechanism 17, as in the above-described embodiment. The entire movable support portion 10 can be displaced so as to be inclined with respect to the upper case 2.

  In the above-described embodiment and its modifications, the case where each spring member 18 of the elastic holding mechanism 17 is an elastic biasing member such as a coil spring has been described. Alternatively, an elastic member made of an elastic material such as an elastomer may be used as the biasing member.

  Furthermore, in the above-described embodiment and its modification, the case where it is applied to an electronic keyboard instrument has been described, but it is not necessarily an electronic keyboard instrument, for example, it can be applied to an electronic instrument such as an electric guitar, The present invention is not necessarily applied to an electronic musical instrument, and can be widely applied to electronic devices including a switch device that detects a rotational position.

As mentioned above, although one Embodiment of this invention and each modification were demonstrated, this invention is not restricted to these, The invention described in the claim, and its equivalent range are included.
The invention described in the claims of the present application will be appended below.

(Appendix)
The invention according to claim 1 is a housing, a movable support portion that is elastically displaceably held in the housing in a state exposed to the outside of the housing, and a state exposed to the outside of the housing And a rotation operation unit rotatably disposed on the movable support unit, and a rotation position provided in the movable support unit in a state of being located inside the casing and detecting a rotation position associated with the rotation operation of the rotation operation unit. And a detecting unit.

  According to a second aspect of the present invention, in the switch device according to the first aspect, an elastic holding mechanism is provided that elastically displaces the movable support portion in accordance with a pressing force when the rotary operation portion is rotated. This is a switch device.

  According to a third aspect of the present invention, in the switch device according to the second aspect, the elastic holding mechanism includes a biasing member that elastically presses the movable support portion against the casing, A switch device comprising: a movable support portion; and a connection adjusting member that adjusts a biasing force of the biasing member with respect to the movable support portion.

  According to a fourth aspect of the present invention, in the switch device according to any one of the first to third aspects, the one of the movable support portion and the rotation operation portion slides while being in contact with the other side. The switch device is characterized in that a sliding protrusion is provided.

DESCRIPTION OF SYMBOLS 1 Musical instrument main body 2 Upper case 2a Opening part 3 Keyboard chassis 4 Key 8 Switch apparatus 10 Movable support part 11 Rotation operation part 12 Detection part 13 Operation storage part 14 Mounting boss part 15 Mounting part 16 Mounting boss 17 Elastic holding mechanism 18 Spring member 19 Connection adjusting screw 20 Operation part 20b, 30 Sliding projection part 21 Mounting boss part 22 Switch part 23 Substrate 24 Switch body 25 Switch shaft

Claims (4)

A housing,
A movable support portion held in an elastically displaceable manner in the state exposed to the outside of the case;
A rotation operation unit rotatably disposed on the movable support unit in a state exposed to the outside of the housing;
A detection unit that is provided in the movable support unit in a state of being located inside the housing and detects a rotational position associated with a rotation operation of the rotation operation unit;
A switch device comprising:   The switch device according to claim 1, further comprising an elastic holding mechanism that elastically displaces the movable support portion in accordance with a pressing force when the rotation operation portion is rotated.   3. The switch device according to claim 2, wherein the elastic holding mechanism includes an urging member that elastically presses the movable support portion against the housing, the movable support portion attached to the housing, and the movable support. And a connection adjusting member that adjusts an urging force of the urging member with respect to the portion. 4. The switch device according to claim 1, wherein one of the movable support portion and the rotation operation portion is provided with a sliding protrusion that slides in contact with the other side. 5. A switching device characterized by comprising:

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