JP2017091613A - Rotation and swing type input device and electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique of securing sufficient rigidity of a holder for rotatably holding an operation dial even when a transmission type optical sensor is used as rotation detecting means of a rotation and swing type input device in which a composite operation of a rotation operation and a swing operation in plural directions can be performed.SOLUTION: A holder 20 of a rotation and swing type input device includes: an inner annular portion 20h that holds an operation dial 25 together with a light shielding blade 31 so that the operation dial 25 is rotatable and swingable in plural directions; an outer annular portion 20d which is disposed on the outer peripheral side of the inner annular portion 20h and provided with a pressing portion 20e for depressing a switch 23a when the operation dial 25 is swung; and plural connecting portions 20f for connecting the outer annular portion 20d and the inner annular portion 20h. When the operation dial 25 is rotated, a light shielding portion 31b of the light shielding blade 31 passing between a light projecting portion and a light receiving portion of a photo interrupter 22 passes between the outer annular portion 20d and the inner annular portion 20h, and the connecting portion 20f is provided with a fixing portion 20i which contacts an adhesive surface of an adhesive sheet 30 exposed from an opening portion 29a formed in a printed wiring board 29 and is fixed to a base table 28.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a rotary swing input device provided in an electronic apparatus including an imaging device such as a digital camera, and an electronic device including the rotary swing input device.

  2. Description of the Related Art Some electronic devices such as a digital camera include a rotary swing input device having an operation dial that can perform a combined operation of a swing operation and a rotation operation in a plurality of directions. As the rotation detecting means of the rotary swing type input device, the operation dial is rotated based on the pulse signal generated by sliding the contact brush fixed to the operation dial along the electrode pattern provided on the printed wiring board. Techniques for detection have been proposed (Patent Documents 1 and 2). In this proposal, by swinging the operation dial, a switch is pushed by a pusher provided on the operation dial, and a signal is output.

  By the way, as a rotation detecting means, a technique for detecting the rotation of the operation dial by passing a plurality of light shielding portions of the light shielding blade rotating integrally with the operation dial between the light projecting portion and the light receiving portion of the transmission type optical sensor. It has been known. The rotation detection means using the transmission type optical sensor is excellent in durability because the light shielding blade and the transmission type optical sensor are not in contact with each other, and it is not necessary to use expensive parts, so that it can be configured at low cost. It is.

Japanese Patent No. 4431177 Japanese Patent No. 5219988

  However, when a transmission type optical sensor is used as the rotation detecting means, the portion of the holder through which the light shielding blade passes is thin to avoid interference between the holder that rotatably holds the operation dial and the light shielding blade. End up. For this reason, it is difficult to ensure sufficient rigidity of the holder, and as a result, there is a possibility that the operation dial will be unstable in the combined operation of the swing operation and the rotation operation in a plurality of directions, and the operability may be lowered. is there.

  Therefore, the present invention provides a holder for rotatably holding an operation dial even when a transmission type optical sensor is used as a rotation detecting means of a rotation / oscillation input device capable of a combined operation of a plurality of oscillation operations and rotation operations. An object of the present invention is to provide a technique capable of ensuring sufficient rigidity.

  To achieve the above object, the present invention is provided on a base, a printed wiring board on which a transmissive photosensor is mounted, and the printed wiring board on the opposite side of the mounting surface of the transmissive photosensor, A pressure-sensitive adhesive sheet that fixes a base and the printed wiring board; a plurality of switches that are provided on the mounting surface side of the transmissive optical sensor of the printed wiring board; And an operation dial capable of swinging operation in a plurality of directions corresponding to the plurality of switches, and a light projecting portion and a light receiving portion of the transmissive optical sensor when the operation dial is rotated and fixed to the operation dial. A plurality of light-shielding portions that pass between the light-shielding blades provided at substantially equal intervals in the circumferential direction, and elastic deformation that holds the operation dial so as to be rotatable with the light-shielding blades and swingable in the plurality of directions. Possible A rotary swing input device comprising a holder, wherein the holder is configured to hold the operation dial so as to be rotatable with the light shielding blade and swingable in the plurality of directions, and the inner annular portion. A pressing portion that is disposed on the outer peripheral side of the unit and elastically deforms and depresses a corresponding switch among the plurality of switches when the operation dial is swung in any of the plurality of directions. An outer annular portion, and a plurality of connecting portions that are disposed between the outer annular portion and the inner annular portion and connect the outer annular portion and the inner annular portion, and the outer annular portion, Between the inner annular portion, when the operation dial is rotated, the light-shielding portion passes, and the adhesive portion of the pressure-sensitive adhesive sheet exposed to the connection portion is exposed from an opening formed in the printed wiring board. Before touching the surface Wherein the fixing portion fixed to the base is provided.

  According to the present invention, a holder for rotatably holding an operation dial even when a transmission type optical sensor is used as a rotation detecting means of a rotary swing type input device capable of a combined operation of a swing operation and a rotation operation in a plurality of directions. Sufficient rigidity can be ensured. Thereby, in the combined operation of the swing operation and the rotation operation in a plurality of directions, it is possible to improve the operability by preventing the operation dial from rattling.

It is the perspective view which looked at the digital camera which is an example of embodiment of an electronic device provided with the rotational oscillation type input device of this invention from the back side. It is a perspective view of a rotation oscillation type input device. FIG. 3 is an exploded perspective view of the rotary swing type input device shown in FIG. 2. (A) is a perspective view of the light-shielding blade fitted to the back side of the operation dial, and (b) is a perspective view showing how the light-shielding blade is attached to the back side of the operation dial. It is a fragmentary perspective view explaining the relationship between the light-shielding blade | wing of a rotation rocking | fluctuation type input device and a photo interrupter. (A) is the perspective view seen from the operation dial side of the holder, (b) is the perspective view seen from the printed wiring board side of the holder. It is the disassembled perspective view which looked at the base, the double-sided tape, the printed wiring board, and the holder from the base side. (A) is the figure which shows the sheet switch fixed to the base via the double-sided tape, (b) is the figure which looked at the principal part of the rotary swing type input device from the operation dial side. It is the sectional view on the AA line of FIG.8 (b).

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a digital camera, which is an example of an embodiment of an electronic apparatus provided with the rotary swing input device of the present invention, as viewed from the back side.

  As shown in FIG. 1, a digital camera 10 of the present embodiment is provided with a lens barrel 12 on the front side, and on the back side, an imaging element (not shown) that passes through the imaging optical system of the lens barrel 12. A display unit 13 such as an LCD for displaying a subject image formed on the screen is provided. When the digital camera 10 is viewed from the back side, an operation dial 25 that constitutes the rotary swing input device 14 is provided on the right side of the display unit 13.

  In the rotary swing type input device 14, for example, a rotation operation of the operation dial 25 is assigned to a function that requires a continuous input operation such as manual focus and white balance. Further, as a combined operation of a swing operation and a rotation operation in a plurality of directions, the push button operation of the operation dial 25 is assigned to a function that can be set by a toggle operation such as flash on / off / auto.

  FIG. 2 is a perspective view of the rotary swing type input device 14. FIG. 3 is an exploded perspective view of the rotary swing type input device 14 shown in FIG.

  As shown in FIGS. 2 and 3, the operation dial 25 is held so as to be rotatable about the Z axis with respect to the holder 20. Further, the operation dial 25 is held so as to be swingable with respect to the holder 20 when pressed in the vertical and horizontal directions in the figure as a composite operation. A display plate 26 is provided at the center of the operation dial 25.

  On the appearance of the display board 26, icons representing the button functions in the up, down, left, and right directions are printed. The display board 26 is positioned in a hole provided in the base 28, and a pin-shaped portion protruding from the back surface of the base 28 is crimped and fixed to the base 28, so that its rotation is restricted. A center key 27 is provided at the center of the display board 26, and the center key 27 is held so that it can be pushed in the axial direction with respect to the display board 26.

  When the operation dial 25 is pressed in the up / down / left / right directions, the display board 26 swings following the operation dial 25, and the center key 27 is interlocked when the operation dial 25 is rotated or swinged. Without pushing, only the pushing operation in the axial direction is possible. The operation dial 25 is fixed to the base 28 via a double-sided tape 30 which is an example of an adhesive sheet together with the printed wiring board 29.

  As shown in FIG. 3, a pair of photo interrupters 22 is mounted on the printed wiring board 29 as a transmissive optical sensor for detecting the rotation of the operation dial 25. On the mounting surface side of the photo interrupter 22 of the printed wiring board 29, a sheet switch 23b that holds a plurality of metal dome switches 23a integrally is fixed. A double-sided tape 30 is disposed on the printed wiring board 29 on the side opposite to the mounting surface of the photo interrupter 22.

  The holder 20 is positioned in a through hole 28a (see FIG. 7) provided in the base 28, and a pin-shaped crimping portion 20j (see FIG. 6B) protruding from the back surface of the base 28 is crimped. The base 28 is fixed. A click spring 21 is held on the holder 20.

  FIG. 4A is a perspective view of the light shielding blade 31 fitted to the back side of the operation dial 25, and FIG. 4B is a perspective view showing how the light shielding blade 31 is attached to the back side of the operation dial 25.

  The light shielding blade 31 is formed of a metal material or the like, and has an annular portion 31a that is fitted and fixed to the back side of the operation dial 25 and rotates integrally with the operation dial 25, as shown in FIG. A plurality of light-shielding portions 31b protruding in the axial direction of the operation dial 25 are provided on the outer peripheral portion of the annular portion 31a at substantially equal intervals in the circumferential direction.

  The light shielding part 31b shields the light from the light projecting part of the photo interrupter 22, and the light from the light projecting part of the photo interrupter 22 is shielded in the gap 32 between the light shielding parts 31b adjacent to each other in the circumferential direction. Without being received by the light receiving unit A positioning portion 31 c for positioning with the operation dial 25 is provided in one gap 32 of the light shielding blade 31 so as to protrude in the axial direction of the operation dial 25. The positioning part 31c has an axial protrusion dimension shorter than that of the light shielding part 31b. Therefore, the light from the light projecting part of the photo interrupter 22 is not shielded by the positioning part 31c.

  As shown in FIG. 4B, the operation dial 25 has a rotating shaft portion 25b that is rotatably held in a holding hole 20c (see FIG. 3) formed in the holder 20 and swingable in a plurality of directions. Is provided. A plurality of convex portions 25 a protruding outward in the radial direction are provided on the outer peripheral portion of the rotating shaft portion 25 b at substantially equal intervals in the circumferential direction.

  When the click spring 21 comes into contact with the convex portion 25a, a click feeling is generated when the operation dial 25 is rotated, and the operation dial 25 is stopped at a stable position when the operation dial 25 is stopped. Further, the operation dial 25 is provided with a notch portion 25c into which the positioning portion 31c of the light shielding blade 31 is positioned and fitted.

  FIG. 5 is a partial perspective view illustrating the relationship between the light shielding blade 31 and the photo interrupter 22 of the rotary swing input device 14. When the operation dial 25 rotates integrally with the light shielding blade 31, the light shielding portion 31 b and the gap 32 of the light shielding blade 31 pass through the gap portion 22 a between the light projecting portion and the light receiving portion of the photointerrupter 22. The light from the 22 light projecting portions is repeatedly blocked and transmitted.

  Based on the output signal from the photo interrupter 22 at this time, the rotation of the operation dial 25 can be detected. Note that the pair of photo interrupters 22 mounted on the printed wiring board 29 are arranged at an angle where the waveform of the output signal is shifted by half phase, so that the rotation direction of the operation dial 25 can also be detected. Yes.

  6A is a perspective view of the holder 20 as viewed from the operation dial 25 side, and FIG. 6B is a perspective view of the holder 20 as viewed from the printed wiring board 29 side.

  As shown in FIG. 6A, the holder 20 includes an inner annular portion 20h having a holding hole 20c that holds the rotary shaft portion 25b of the operation dial 25 so as to be rotatable and swingable in a plurality of directions. An outer annular portion 20d is arranged on the outer peripheral side of the inner annular portion 20h, and the outer annular portion 20d and the inner annular portion 20h are connected via four connection portions 20f arranged at substantially equal intervals in the circumferential direction. Has been. The inner annular portion 20h, the connecting portion 20f, and the outer annular portion 20d are integrally formed of an elastically deformable resin material or the like.

  On the surface of the outer annular portion 20d on the side of the operation dial 25, four sliding portions 20e that slide when the operation dial 25 rotates are provided at substantially equal intervals in the circumferential direction. The four sliding portions 20e are provided corresponding to the four metal dome switches 23a on the top, bottom, left, and right arranged at the center of the plurality of metal dome switches 23a shown in FIG. The sliding portion 20e functions as a pressing portion that presses down the corresponding metal dome switch 23a when the operation dial 25 is swung in either the up, down, left, or right direction.

  At this time, the outer annular portion 20d is provided with a first contact surface 20b as a stopper in the swinging direction of the operation dial 25. The first abutment surface 20b is arranged in the vicinity of the photo interrupter 22, and is in the same phase as the connection portion 20f and is shifted at a 45 ° phase with respect to the sliding portion 20e at four locations at substantially equal intervals in the circumferential direction. Is provided. Similarly, the inner annular portion 20h is provided with a second contact surface 20a as a stopper in the swinging direction of the operation dial 25.

  As shown in FIG. 6B, a planar fixing portion 20i for fixing to the base 28 is provided on the back side of the connecting portion 20f. The fixed portion 20i has a convex shape that protrudes toward the seat switch 23b from the contact surfaces of the inner annular portion 20h and the outer annular portion 20d with the seat switch 23b. A crimping portion 20j is provided at a position on the radially outer side of the fixing portion 20i. The caulking portion 20j is used for caulking and fixing the holder 20 to the printed wiring board 29 fixed to the sheet switch 23 and the base 28 via the double-sided tape 30.

  FIG. 7 is an exploded perspective view of the base 28, the double-sided tape 30, the printed wiring board 29, and the holder 20 as viewed from the base 28 side. As shown in FIG. 7, the base 28 is provided with a through hole 28 a for caulking and fixing a caulking portion 20 j provided in the holder 20. The printed wiring board 29 is formed with an opening 29a through which a caulking portion 20j and a fixing portion 20i provided in the holder 20 pass.

  FIG. 8A is a diagram showing a printed wiring board 29 to which a sheet switch 23b is attached and fixed to a base 28 via a double-sided tape 30, and FIG. It is the figure which looked at the part from the operation dial 25 side.

  As shown in FIG. 8A, the adhesive surface of the double-sided tape 30 is exposed at the opening 29 a of the printed wiring board 29. Here, the fixing portion 20i of the holder 20 is fixed to the base 28 in surface contact with the double-sided tape 30 exposed from the opening 29a, and in this state, the caulking portion protruding from the through hole 28a formed in the base 28. 20j is fixed by caulking. Thus, in this embodiment, since the holder 20 is being fixed to the base 28 at the time of caulking fixation, the positional accuracy of the holder 20 with respect to the base 28 becomes favorable.

  FIG. 9 is a cross-sectional view taken along line AA in FIG. When the operation dial 25 is rotated, as shown in FIG. 9, the light shielding portion 31 b of the light shielding blade 31 fixed integrally with the operation dial 25 passes through the connection portion 20 f of the holder 20. For this reason, the operation dial 25 can be rotated by forming the connecting portion 20f relatively thin.

  Here, in the present embodiment, as described above, the fixing portion 20 i provided on the surface on the base 28 side of the connection portion 20 f of the holder 20 is fixed to the base 28 in surface contact with the double-sided tape 30. . As a result, the connecting portion 20f is thin, but is fixed to the base 28 with the double-sided tape 30 on the surface, so that the rigidity of the holder 20 can be ensured. Further, the first contact surface 20b functions as a stopper when the outer peripheral flange portion of the operation dial 25 abuts when the operation dial 25 is swung, so that the operation dial 25 swings more than necessary. To regulate.

  As described above, in the present embodiment, the holder 20 that holds the operation dial 25 in a rotatable manner faces the double-sided tape 30 exposed from the opening 29 a formed in the printed wiring board 29 with respect to the base 28. Fixed in contact. As a result, the connecting portion 20f of the holder 20 has a thin shape, but the holder 20 is fixed on the surface with respect to the base 28, so that the rigidity of the holder 20 can be improved in the surface direction.

  As a result, even when the photo interrupter 22 is used as the rotation detecting means of the rotary swing type input device 14 capable of performing a combined operation of a swing operation and a rotation operation in a plurality of directions. Sufficient rigidity of the holder 20 that rotatably holds the operation dial 25 can be ensured. Thereby, in the combined operation of the swing operation and the rotation operation in a plurality of directions, it is possible to prevent the operation dial 25 from rattling and to improve the operability. In addition, relative movement of the holder 20 and the base 28 can be prevented, and the operability of the operation dial 25 can be improved, and the positional accuracy of the operation dial 25 can be improved.

  The configuration of the present invention is not limited to that exemplified in the above embodiment, and the material, shape, dimensions, form, number, arrangement location, and the like can be changed as appropriate without departing from the scope of the present invention. It is.

14 Rotating and swinging type input device 20 Holder 20d Outer annular portion 20e Sliding portion 20f Connection portion 20h Inner annular portion 20i Fixing portion 22 Photo interrupter 23b Sheet switch 25 Operation dial 28 Base 29 Printed wiring board 29a Opening portion 30 Double-sided tape 31 Shading blade 31b Shading part

Claims (4)

The base,
A printed wiring board on which a transmissive optical sensor is mounted;
An adhesive sheet provided on the opposite side of the printed wiring board from the mounting surface of the transmissive photosensor, and fixing the base and the printed wiring board;
A plurality of switches provided on the mounting surface side of the transmissive optical sensor of the printed wiring board and generating a signal when pressed;
An operation dial capable of rotating operation and swinging operation in a plurality of directions corresponding to the plurality of switches;
A plurality of light shielding portions that are fixed to the operation dial and pass between the light projecting portion and the light receiving portion of the transmissive optical sensor when the operation dial is rotated are provided at substantially equal intervals in the circumferential direction. A shading blade,
A rotationally oscillating input device comprising: an elastically deformable holder that holds the operation dial together with the light-shielding blade and is swingable in the plurality of directions;
The holder is disposed on an inner annular portion that holds the operation dial together with the light shielding blade so as to be swingable in the plurality of directions, and on an outer peripheral side of the inner annular portion, and the operation dial is disposed in the plurality of directions. An outer annular portion provided with a pressing portion that is elastically deformed and depresses a corresponding switch among the plurality of switches when the rocking operation is performed in any of the directions, the outer annular portion, and the inner annular portion And a plurality of connecting portions that connect the outer annular portion and the inner annular portion,
When the operation dial is rotated, the light shielding portion passes between the outer annular portion and the inner annular portion, and the connection portion is exposed from an opening formed in the printed wiring board. A rotationally oscillating input device, characterized in that a fixing portion is provided which contacts the adhesive surface of the adhesive sheet and is fixed to the base. The holder has a crimped portion with the base at a position radially outside the fixed portion,
The rotationally oscillating input device according to claim 1, wherein the caulking part penetrates the opening together with the fixing part.   The rotary swing input device according to claim 1, wherein the opening is disposed between the plurality of switches.   An electronic apparatus comprising the rotationally oscillating input device according to any one of claims 1 to 3.