JP7246935B2 - Rotary operating device and electronics - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary operation device and electronic equipment, and more particularly to an electronic device having a rotary operation device.

In general, electronic devices such as digital cameras are equipped with a so-called rotary operation device for setting various setting values. It is rotatably held in the housing of the electronic device.

For example, as such a rotary operation device, one having a so-called photoreflector is known (Patent Document 1). In this rotary operation device, the light emitted from the light emitting portion of the photoreflector is projected onto the rotary operation member, and the light reflected by the rotary operation member can be received by the light receiving portion. Rotating operation of the operating member is detected.

JP 2017-58398 A

However, in the rotary operation device described in Patent Document 1, the sheet member fixed to the circumferential surface of the rotary operation member and the surface-treated surface on the circumferential surface form a light reflecting surface and a non-reflecting surface. I am trying to form Therefore, it is necessary to surface-treat the rotary operation member. In addition, in order to properly detect the rotation, it is necessary to adjust the reflectance of the surface-treated surface so as to be equal to the reflectance of the reflecting surface of the sheet member, resulting in an increase in cost.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a rotary operation device and an electronic device that can reduce costs, prevent erroneous detection, and obtain good operability.

In order to achieve the above object, a rotary operation device according to the present invention is a rotary operation device used when setting a set value according to a rotation operation of a rotary operation member, wherein the inner peripheral surface of the rotary operation member has a Reflection in which first regions having a first reflectance and second regions having a second reflectance lower than the first reflectance are alternately formed along a circumferential direction. and a detecting means disposed at a position facing the reflecting member and adapted to detect rotation of the rotating operation member in response to reflected light received from the reflecting member in response to a rotating operation of the rotating operation member. In the reflecting member, a first end of the second region is defined at one end in the circumferential direction of the inner peripheral surface of the rotary operation member , and a first end of the second region is defined in the circumferential direction of the inner peripheral surface of the rotary operation member. A second end of the first region is defined at the other end, and the reflecting member is positioned so that the second end overlaps the first end. A recessed portion corresponding to the thickness of the reflecting member is disposed on the inner peripheral surface of the rotating operation member, and the overlapping portion where the first end portion and the second end portion are overlapped is formed on the inner peripheral surface of the rotating operation member . is formed, and the first end of the reflecting member is recessed into the concave portion .

According to the present invention, it is possible to reduce costs, prevent erroneous detection, and obtain good operability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the appearance of an electronic device in which a rotary operation device according to a first embodiment of the invention is used; 2 is an exploded perspective view of the camera shown in FIG. 1; FIG. FIG. 3 is a perspective view for explaining a front cover unit and a rotary operation member unit shown in FIG. 2; FIG. 4 is a perspective view showing the rotary operation member unit shown in FIG. 3; 4A and 4B are diagrams for explaining a click mechanism that generates a click feeling when the rotary operation member unit shown in FIG. 3 is rotated; FIG. 4A and 4B are diagrams for explaining a rotation detection method when the rotary operation member unit shown in FIG. 3 is rotated; FIG. 4 is a diagram showing signal waveforms output from two photoreflectors when the rotary operation member unit shown in FIG. 3 is rotated clockwise when viewed from the front side of the camera; FIG. 4A and 4B are diagrams for explaining fixing of a seat to a rotation operation member shown in FIG. 3; FIG. FIG. 10 is a diagram for explaining fixing of a seat to a rotary operation member in a camera equipped with a rotary operation device according to a second embodiment of the present invention; FIG. 10 is a diagram for explaining a rotary operation member and a seat in a camera equipped with a rotary operation device according to a third embodiment of the present invention (No. 1); FIG. 12 is a diagram for explaining a rotary operation member and a seat in a camera equipped with a rotary operation device according to a third embodiment of the present invention (No. 2);

An example of a rotary operation device according to an embodiment of the present invention will be described below with reference to the drawings.

[First embodiment]
FIG. 1 is a perspective view showing the appearance of an electronic device in which a rotary operation device according to a first embodiment of the invention is used. In the following description, an imaging device such as a digital camera (hereinafter simply referred to as a camera), which is one type of electronic equipment, will be taken as an example.

A power button 101 is arranged on the upper surface of the camera, and the power of the camera is turned on or off by operating the power button 101 . A release button 102 is a button for instructing shooting preparation and shooting start. The zoom lever 103 is rotatable up to a predetermined angle around the center of the release button 102 . A zoom lever 103 is used to adjust the magnification in optical zooming or digital zooming.

A mode dial 104 is used when switching between shooting modes. An exposure correction dial 105 is used when setting a correction amount related to the brightness of a captured image. A protective window 106 is a window for protecting the AF auxiliary light LED. A strap string is passed through and attached to the strap attaching portions 108 and 109 . The illustrated camera is equipped with a flash light emitting device 20, and a collapsible lens barrel lens 50 is arranged in front of the camera.

When the release lever 107 is moved downward, the flash portion of the flash light emitting device 20 pops up to enable flashing. In the state shown in FIG. 1, the flash light emitting device 20 is housed. A rotary operation member unit (rotary operation device) 35 having a rotary operation member operated when changing the set values of various parameters is arranged on the outer peripheral side of the collapsible barrel lens 50 .

2 is an exploded perspective view of the camera shown in FIG. 1. FIG. 2, the same reference numerals are given to the same components as those shown in FIG.

The camera includes a top cover unit 10 , a right side cover 21 , a left side cover 22 , a front cover unit 30 and a rear cover unit 41 . A camera housing is defined by the top cover unit 10, the right side cover 21, the left side cover 22, the front cover unit 30, and the rear cover unit 41. As shown in FIG.

The front cover unit 30 is provided with a rotary operation member unit 35 . The collapsible barrel lens 50 is held by the metal chassis 40 . The rear cover unit 41 is provided with rear operation buttons (not shown), and further holds a liquid crystal display unit 42 .

3 is a perspective view for explaining the front cover unit and the rotary operation member unit shown in FIG. 2. FIG. FIG. 3A is an exploded perspective view of the front cover unit, and FIG. 3B is an exploded perspective view of the rotary operation member and the annular member provided in the rotary operation member unit. .

The front cover unit 30 has a front cover 301, and the front cover 301 is obtained by molding polycarbonate with a mold. A tip fixing member 310 which is an external appearance component on the front side is fixed to the tip of a cylindrical portion 301 a provided on the front cover 301 with three screws 311 . The base fixing part 312 is inserted up to the base of the tubular portion 301a and is adhesively fixed.

The rotary operation member unit 35 has a rotary operation member 351, a sheet (reflection member) 352, and an annular member 353, and these three parts rotate together. One side of the sheet 352 is coated with an adhesive, and the sheet 352 is attached to the inner peripheral surface 351 a of the rotary operation member 351 . A method of attaching the sheet 352 will be described later.

A cylindrical fitting portion 353a provided on the annular member 353 is fitted with an inner diameter fitting portion 351b of the rotary operation member 351 in the radial direction. A fitting rib 353b provided on the annular member 353 fits between two fitting ribs 351c formed on the rotary operation member 351, thereby determining the rotational phase.

By the above two fittings, the rotary operation member 351 and the annular member 353 rotate together. As will be described later, no fixing such as adhesion is performed between the rotary operation member 351 and the annular member 353 .

After fixing the root fixing component 312, the rotary operation member unit 35 is inserted into the cylindrical portion 301a provided in the front cover 301, and rotatably sandwiched between the tip fixing member 310 and the root fixing component 312 which are fixed later. be.

In order to improve the quality of the product, the rotating operation member unit 35 desirably suppresses rattling in the thrust direction or the radial direction of the clamped member and the held member. On the other hand, in order to achieve smooth rotation of the rotary operation member unit 35, it is necessary to set a minute gap in the thrust direction between the rotary operation member unit 35 and the distal end fixing member 310. FIG. Furthermore, it is necessary to set a minute gap in the radial direction between the rotary operation member unit 35 and the cylindrical portion 301a.

Due to the presence of these minute gaps, the rotary operation member unit 35 unavoidably has rattling in the thrust direction and radial direction corresponding to the minute gaps. A first sliding sheet 313 and a second sliding sheet 314 are provided to suppress these rattling.

The first sliding sheet 313 is sandwiched between the rotary operation member unit 35 and the distal end fixing member 310 . The first sliding sheet 313 is obtained by laminating a member having a low coefficient of friction and a member having cushioning properties. The first sliding sheet 313 improves slidability when the rotary operation member unit 35 rotates. Furthermore, by urging the rotary operation member unit 35 in the thrust direction, rattling caused by a minute gap with the distal end fixing member 310 is suppressed.

The three second sliding sheets 314 are attached to the inner peripheral portion of the rotary operation member unit 35 at intervals of 120° with respect to the center of the rotation shaft. These second sliding sheets 314 are obtained by pasting together a member with a low coefficient of friction, a member having cushioning properties, and a double-sided tape.

The second sliding sheet 314 improves slidability when the rotary operation member unit 35 rotates. Furthermore, by urging the rotary operation member unit 35 in the radial direction, rattling in the radial direction caused by a minute gap with the cylindrical portion 301a is suppressed.

Here, fixing of the rotary operation member 351 and the annular member 353 will be described.

As described above, the rotary operation member unit 35 is sandwiched between the distal end fixing member 310 and the base fixing member 312, and the urging by the first sliding sheet 313 suppresses rattling in the thrust direction. By setting the amount of the two fittings between the rotary operation member 351 and the annular member 353 long enough to suppress backlash in the thrust direction, the two fittings are prevented from coming off. Accordingly, it is not necessary to fix the rotary operation member 351 and the annular member 353 by adhesion or the like.

Photoreflectors 321 and 322 are mounted on the flexible wiring board 320 . Each of the light-reflectors 321 and 322 has a light-emitting portion and a light-receiving portion, and whether or not the light emitted from the light-emitting portion can be applied to an object and the light reflected by the object can be received by the light-receiving portion. The presence or absence of an object is detected according to

A holding member 315 holds a substrate 320 and is fixed to the front cover 301 with screws 316 . The spherical member 317 is a so-called steel ball, and its surface is finished smoothly. The urging leaf spring 318 is a pressed part made of a spring sheet material and fixed to the front cover 301 with a screw 319 . The spherical member 317 and the biasing leaf spring 318 form part of a click mechanism which will be described later.

4 is a perspective view showing the rotary operation member unit shown in FIG. 3. FIG. FIG. 4 shows the positional relationship between the rotary operation member 351, the seat 352, the annular member 353, the spherical member 317, and the photoreflectors 321 and 322. FIG. Here, for convenience of explanation, the front cover 301 and the like are omitted.

The photoreflectors 321 and 322 are arranged facing the outer peripheral side at a position facing the sheet 352 attached to the inner peripheral surface 351 a of the rotary operation member 351 . In order to detect the rotation of the rotary operation member 351, the sheet 352 has areas (reflection areas) that reflect the light reflected by the photorelectors 321 and 322 to a detectable level and areas (non-reflection areas) that do not reflect the light. formed in Rotation detection of the rotary operation member 351 will be described later.

The spherical member 317 is arranged at a position coinciding with the annular member 353 in the thrust direction of the rotary operation member unit 35 and abuts against the inner peripheral surface of the annular member 353 in the radial direction. A plurality of concave portions 353c and convex portions 353d are alternately formed in the annular member 353, and serves as a part of a click mechanism (a click feeling generating portion) that generates a click feeling when the rotary operation member unit 35 is rotated. Become.

FIG. 5 is a diagram for explaining a click mechanism that generates a click feeling when the rotary operation member unit shown in FIG. 3 is rotated. 5(A) is a view showing the front cover unit from the rear side, and FIG. 5(B) is a cross-sectional view taken along line DD shown in FIG. 5(A).

The click mechanism includes an annular member 353 fixed to the rotary operation member 351, a spherical member (abutment portion) 317 in contact with the annular member 353, and the spherical member 317 is brought into contact with the annular member 353 and biased. It has a biasing plate spring (biasing portion) 318 . By the biasing force of the biasing plate spring 318, the spherical member 317 is engaged with the concave portion 353c of the annular member 353 shown in FIG. As a result, the spherical member 317 escapes from the concave portion 353c and passes over the convex portion 353d shown in FIG. Subsequently, when the rotary operation member 351 is rotated, the spherical member 317 is engaged with the next concave portion 353c by the biasing force of the biasing leaf spring 318. As shown in FIG.

The above operation is repeated each time the rotary operation member 351 is rotated. That is, by rotating the rotating operation member 351, the spherical member 317 repeatedly engages and disengages with the concave portion 353c, thereby generating a click feeling.

When the spherical member 317 engages with the recess 353c of the annular member 353, the rotation operation member 351 stops rotating. The position of the rotary operation member unit 35 in this state is called a click position. The number of click positions is the same as the number of recesses 353 c formed in the annular member 353 .

6A and 6B are diagrams for explaining a rotation detection method when the rotary operation member unit shown in FIG. 3 is rotated. 6 shows a partial cross section of FIG. 4, showing the positional relationship between the photoreflectors 321 and 322 and the sheet 352. As shown in FIG.

As described with reference to FIG. 4, the photoreflectors 321 and 322 mounted on the flexible wiring board 320 are arranged on the inner peripheral side of the rotary operation member 351 and face the outer peripheral side.

As shown in FIG. 6, on the sheet 352, reflective areas W having a width w substantially equal to each other and non-reflecting areas B having a width b substantially equal to each other are alternately formed at substantially equal intervals in the circumferential direction. there is The width w and the width b are set to approximately the same length.

In the illustrated example, the sheet 352 shows the reflective area W as a white area and the non-reflective area B as a black area. Also, the reflective area W is assumed to be the material color of the sheet 352 . Further, the reflective area W defined on the sheet 352 is printed to form a non-reflective area B. FIG. The reflective area W is an example of a first area having a first reflectance, and the non-reflective area B is an example of a second area having a second reflectance lower than the first reflectance. .

The reflective area W reflects the light projected from the light-emitting portions of the photoreflectors 321 and 322 to a level detectable by the light-receiving portions of the photoreflectors 321 and 322 . On the other hand, the non-reflecting area B cannot reflect the light projected from the light emitting portions of the photoreflectors 321 and 322 to a level detectable by the light receiving portions of the photoreflectors 321 and 322 . As a result, the light-receiving portions of the photoreflectors 321 and 322 alternately enter the light-receiving state and the non-light-receiving state as the rotary operation member 351 rotates.

A detection output (waveform signal: detection result) is sent from the photoreflectors 321 and 322 by a signal processing circuit (control section: not shown). Then, the control unit sets various set values according to the detection result, that is, the rotation operation of the rotation operation member provided in the rotation operation device.

As shown in FIG. 6, for example, when the photoreflector 321 is arranged near the left end of the reflection area W, the photoreflector 322 is arranged near the right end of the reflection area W. As shown in FIG. With this arrangement pitch, the phase difference between the signal waveforms output from the photoreflectors 321 and 322 can be maximized. It should be noted that the detection of the direction of rotation requires a phase difference between the signal waveforms.

Due to the presence of the phase difference, when the photoreflector 322 receives the light according to the rotation direction of the rotary operation member unit 35, there is a difference as to whether the photoreflector 321 receives the light. According to this difference, the signal processing circuit can determine in which direction the rotary operation member unit 35 is rotating.

FIG. 7 is a diagram showing signal waveforms output from two photoreflectors when the rotary operation member unit shown in FIG. 3 is rotated clockwise when viewed from the front side of the camera.

In FIG. 7, the high level (H level) range indicates that the photoreflector is in the light receiving state. On the other hand, the low level (L level) range indicates that the photoreflector is in a non-light-receiving state.

The signal waveforms output from photoreflectors 321 and 322 have a phase difference of approximately half the phase. Incidentally, the detection outputs of the photoreflectors 321 and 322 are actually continuous values instead of binary values of H level and L level. In the following cases, it is L level.

In the illustrated example, when the rotary operation member unit 35 is rotated and the photoreflector 321 (detecting means) returns to the light receiving state, if the photoreflector 322 (second detecting means) is not in the light receiving state, the clockwise rotation is made. becomes a rotation of On the other hand, if the photoreflector 322 is in the light receiving state, the rotation is counterclockwise.

If there is no phase difference between the signal waveforms of the photoreflectors 321 and 322, the signal waveforms of the photoreflectors 321 and 322 are the same regardless of which direction the rotary operation member unit 35 is rotated. Therefore, the direction of rotation of the rotary operation member unit 35 cannot be detected. Furthermore, when the phase difference between the signal waveforms of the photoreflectors 321 and 322 is small, the presence or absence of the phase difference may vary, which may result in erroneous detection of the rotation direction.

Regarding the amount of rotation of the rotary operation member unit 35, regardless of the direction of rotation, the signal processing circuit determines that it has rotated by one pitch when the signal waveform of the photoreflector 321 changes from L level to H level. As described above, the reflective areas W and the non-reflective areas B are alternately formed on the inner circumference of the rotary operation member unit 35 at the same pitch over the entire circumference. As a result, the rotation can be detected each time the rotary operation member unit 35 is rotated by one pitch.

Here, the arrangement relationship between the photoreflectors 321 and 322 and the sheet 352 at the click stop position is the relationship shown in FIG. That is, when the rotary operation member unit 35 is at the click stop position and rotation is stopped, the arrangement relationship between the photoreflectors 321 and 322 and the sheet 352 is such that the signal waveforms of the photoreflectors 321 and 322 are both in the H level range. Become.

As described above, there are as many click stop positions as there are recesses 353c formed in the annular member 353. FIG. Therefore, each time the rotary operation member unit 35 is positioned at the click stop position, the arrangement relationship between the photoreflectors 321 and 322 and the sheet 352 becomes the same as the relationship shown in FIG.

8 is a diagram for explaining how the seat is fixed to the rotary operation member shown in FIG. 3. FIG. FIG. 8A is a diagram showing a state before the sheet is attached, and FIG. 8B is a diagram showing in detail the portion E shown in FIG. 8A. FIG. 8(C) is a diagram showing the state after the sheet is attached, and FIG. 8(D) is an enlarged diagram showing the end portion after the sheet is attached from the rotation axis direction of the rotary operation member. .

First, referring to FIGS. 8A and 8B, the seat 352 is formed with a convex portion (engagement portion) 352c in the direction of the rotational axis of the rotary operation member 351. As shown in FIG. The rotary operation member 351 is formed with a concave portion (locking portion) 351d extending from the inner peripheral surface 351a in the rotation axis direction. The concave portion 351d is formed to be engageable with the convex portion 352c.

While engaging the circumferential end surface 352d of the convex portion 352c with the circumferential side surface 351e of the concave portion 351d formed in the rotary operation member 351, the seat 352 is placed on the inner peripheral surface 351a of the rotary operation member 351. Paste and fix. That is, the sheet 352 is fixed to the rotary operation member 351 so that the convex portion 352c engages with the concave portion 351d, and the reflective areas W and the non-reflective areas B are alternately arranged in the circumferential direction of the inner peripheral surface 351a. be done.

The seat 352 is slightly longer than the circumferential length of the inner peripheral surface 351a of the rotary operation member 351, and has a first end 352a and a second end opposite to the first end in the circumferential direction. 352b. That is, a first end is defined at one end of the sheet 352 and a second end is defined at the other end.

A convex portion 352c of the sheet 352 is formed near the first end 352a. When the sheet 352 is attached to the rotary operation member 351, the circumferential end surface 352d of the convex portion 352c and the circumferential side surface 351d of the concave portion 351d are brought into contact to regulate the position. Thereafter, along the inner peripheral surface 351a of the rotary operation member 351, the sheet 352 is attached from the first end portion 352a toward the second end portion 352b.

8(C) and 8(D), a first end portion 352a of the sheet 352 is composed of the non-reflecting area B and is slightly wider than the width b of the other non-reflecting area B. wide. A second end portion 352b of the sheet 352, which is the affixing end end, is formed by the reflection area W. The length of the sheet 352 is set longer than the circumferential length of the inner peripheral surface 351a of the rotary operation member 351, so that the It is attached so as to ride on the end portion 352a of 1.

As a result, the first end portion 352a and the second end portion 352b are separated from each other due to the non-uniform attachment of the sheet 352, and the inner peripheral surface 351a of the rotary operation member 351, which is not the reflective area W and the non-reflective area B, is displaced. can be prevented from being exposed. As a result, erroneous detection of rotation can be prevented.

Furthermore, when the photoreflector and the reflective surface (reflection area) approach each other, the amount of reflected light increases and the output of the photoreflector increases. The second end 352b is closer to the photoreflectors 321 and 322 than the other reflective regions W of the sheet 352 because the second end 352b runs over the first end 352a. Then, as the distance approaches, the output of the photoreflector increases, but since it only increases further when the threshold value is exceeded, there is no effect on rotation detection.

For example, if the second end 352b is the non-reflecting area B, the output of the photoreflector increases and approaches the threshold value, which may cause erroneous rotation detection.

Thus, the seat 352 and the annular member 353 always have the same positional relationship with respect to the rotary operation member 351 . Since the positional relationship between the seat 352 and the annular member 353 is always the same, the positional relationship between the photoreflectors 321 and 322 and the seat 352 is the relationship shown in FIG. 6 at the click stop position.

As described above, in the first embodiment of the present invention, the reflecting surface and the non-reflecting surface for the light projected from the photoreflector can be formed only by the sheet without surface treatment of the rotary operation member. . As a result, it is possible to reduce costs, prevent erroneous detection, and obtain good operability.

[Second embodiment]
Next, a camera equipped with a rotary operation device according to a second embodiment of the invention will be described. The camera according to the second embodiment has the same configuration as the camera shown in FIGS. 1 to 7, and the fixing method of the sheet 352 is different from that of the first embodiment.

FIG. 9 is a diagram for explaining fixing of a seat to a rotary operation member in a camera equipped with a rotary operation device according to the second embodiment of the present invention. FIG. 9A shows the state before the sheet is attached, and FIG. 9B shows the state after the sheet is attached. FIG. 9C is a partially enlarged view of the rotary operation member from the direction of the rotation axis, and FIG. It is a diagram showing. 9, reference numeral 651 designates the rotary operation member.

The rotary operation member 651 is formed with a concave portion 651d extending from the inner peripheral surface 651a in the rotation axis direction. The concave portion 651d is formed to be engageable with the convex portion 352c. The sheet 352 is attached to the inner peripheral surface 651a of the rotary operation member 651 while engaging the circumferential end surface 352d of the convex portion 352c with the circumferential side surface 651e of the concave portion 651d formed in the rotary operation member 651. fixed.

An inner peripheral surface 651a of the rotary operation member 651 is formed with a recess 651f at a portion (location) where the first end portion 352a is arranged when the sheet 352 is attached. As shown in FIG. 9C, the concave portion 651f is recessed from the inner peripheral surface 651a by an amount corresponding to the thickness t of the sheet 352, and is smoothly connected to the inner peripheral surface 651a by the slope portion 651g. there is That is, the inner wall of the recess 651f is tapered.

Due to this concave portion 651f, the distance between the photoreflectors 321 and 322 and the second end portion 352b that rides on the first end portion 352a becomes the same as that of the other reflection regions W, and the outputs of the photoreflectors can be made the same.

On the other hand, the distance between the first end 352a and the photoreflectors 321 and 322 becomes larger than the other non-reflecting area B due to the recess 651f, and the output of the photoreflector becomes smaller. However, since the output of the photoreflector is smaller when the threshold is not exceeded, there is no effect on rotation detection.

Thus, in the second embodiment of the present invention as well, the reflective surface and the non-reflective surface for the light projected from the photoreflector can be formed only by the sheet without surface treatment of the rotary operation member. . As a result, it is possible to reduce costs, prevent erroneous detection, and obtain good operability.

[Third Embodiment]
Next, a camera equipped with a rotary operation device according to a third embodiment of the invention will be described. The camera according to the second embodiment has the same configuration as the camera shown in FIGS. 1 to 8, but differs from the first embodiment in the rotary operation member and the seat. Incidentally, in the third embodiment, reference numeral 700 denotes the rotary operation member, and reference numeral 750 denotes the seat.

10 and 11 are diagrams for explaining a rotary operation member and a seat in a camera equipped with a rotary operation device according to a third embodiment of the invention. FIG. 10A is a perspective view showing a state before the seat is attached to the inner peripheral surface of the rotary operation member, and FIG. It is a figure which shows. FIG. 11(A) is a diagram showing the state after the seat is assembled to the rotary operation member, and FIG. 11(B) is a diagram showing a cross section taken along line FF shown in FIG. 11(A). be.

The sheet 750 has a substantially cylindrical shape with a part notched, and is made of an elastically deformable thin plate, for example, metal such as stainless steel. In particular, it may be made of a material other than metal as long as it can be elastically deformed.

Similar to the sheet 352, the inner peripheral surface of the sheet 750 has a first region (reflection region) having a first reflectance and a second region having a second reflectance lower than the first reflectance. Areas (non-new vehicle areas) are alternately formed at approximately equal intervals. Incidentally, as described above, the first region and the second region may be formed by printing, painting, or other methods.

Referring to FIG. 10A, a first convex shape (first convex body) 700b and a second convex shape (second convex body) are adjacent to the inner peripheral surface 700a of the rotary operation member 700. ) 700c has a diameter smaller than that of the inner peripheral surface 700a.

A convex portion 750 a is formed on the seat 750 in the rotation axis direction of the rotary operation member 700 . Further, the rotary operation member 700 is formed with a concave portion 700d extending from the inner peripheral surface 700a in the rotation axis direction. The concave portion 700d is formed to be engageable with the convex portion 750a.

As shown in FIG. 10B, the second convex shape 700c of the rotary operation member 700 is formed while elastically deforming the seat 750 inward, that is, making it radially smaller than the second convex shape 700c. to move to the inner peripheral surface 700a. The second convex shape 700c is provided with a chamfered shape 700f, which facilitates the insertion of the seat 750 into the inner peripheral surface 700a of the rotary operation member 700. As shown in FIG. Furthermore, the second convex shape 700c is arranged at three locations on the circumference so as to have substantially equal angles.

While inserting the seat 750 into the rotary operation member 700, the convex portion 750a is inserted into and engaged with the concave portion 700d formed in the rotary operation member 700. As shown in FIG. Thereby, the position of the seat 750 in the circumferential direction with respect to the rotary operation member 700 can be determined. Thereafter, the elastic deformation is released on the inner peripheral surface 700a in a state in which the sheet 750 is abutted against the first convex shape 700b of the rotary operation member 700. As shown in FIG.

The diameter dimension of the seat 750 before elastic deformation is larger than the diameter dimension of the inner peripheral surface 700 a of the rotary operation member 700 . Therefore, the seat 750 is held along the inner peripheral surface 700a of the rotary operation member 700 by the restoring force. Also, since the first convex shape 700b and the second convex shape 700c have diameters smaller than the diameter of the inner peripheral surface 700a, the sheet 750 does not come off easily.

The seat 750 is slightly longer than the inner peripheral surface 700a of the rotary operation member 700, and has a first end 750b and a second end 750c opposite to the first end in the circumferential direction. and In the sheet 750, the convex portion 750a is formed in the vicinity of the first end 750b, and the first end 750b is composed of a non-reflecting area similar to the sheet 370 and is slightly wider than the other non-reflecting areas. is long. The second end 750c comprises a reflective area.

When the seat 750 is incorporated into the rotary operation member 700, as shown in FIG. 10B, the seat 750 is elastically deformed so that the second end portion 750c is positioned on the inner peripheral surface side of the first end portion 750b. . Thereafter, when the seat 750 is held by the inner peripheral surface of the rotary operation member 700 due to the restoring force of the seat 750, the second end portion 750c rides on the inner peripheral surface side of the first end portion 750b. is retained as

As a result, the first end portion 750b and the second end portion 750c are separated from each other due to the variation in the length of the sheet 750, and the inner peripheral surface 700a of the rotary operation member 700, which is neither the reflective area nor the non-reflective area, is displaced. It is possible to prevent the impossibility of rotation detection due to exposure.

As described above, also in the third embodiment of the present invention, it is possible to suppress the cost, prevent the occurrence of erroneous detection, and obtain good operability.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist.

301 Front cover 317 Spherical member 318 Biasing plate spring 321, 322 Photo reflector 351 Rotating operation member 352 Seat 353 Annular member

Claims (10)

A rotary operation device used when setting a set value according to a rotary operation of a rotary operation member,
A first region having a first reflectance and a second region having a second reflectance lower than the first reflectance are arranged on the inner peripheral surface of the rotary operation member in the circumferential direction. reflective members alternately formed along
a detecting means disposed at a position facing the reflecting member and adapted to detect rotation of the rotating operation member in response to reflected light received from the reflecting member in response to a rotating operation of the rotating operation member;
In the reflecting member, the first end of the second region is defined at one end in the circumferential direction of the inner peripheral surface of the rotary operation member , and the other end in the circumferential direction of the inner peripheral surface of the rotary operation member is defined. defining a second end of the first region at an end,
the reflecting member is disposed on the inner peripheral surface of the rotary operation member such that the second end overlaps the first end;
A recessed portion corresponding to the thickness of the reflecting member is formed in an overlapping portion where the first end portion and the second end portion are overlapped on the inner peripheral surface of the rotating operation member ,
A rotary operation device , wherein the first end of the reflecting member is inserted into the concave portion . 2. The rotary operation device according to claim 1, wherein the rotary operation member is provided with a click feeling generating part for giving a click feeling when the rotary operation member is rotated. A plurality of recesses are formed in the rotational operation member at predetermined intervals along the circumferential direction,
3. The rotation operation according to claim 2, wherein the click feeling generating portion has a contact portion that contacts the inner peripheral surface and a biasing portion that biases the contact portion in a radial direction. Device. The contact portion is a spherical member,
4. The rotation according to claim 3, wherein when the rotary operation member is rotated, the click feeling is repeatedly provided between the engagement state and the non-engagement state between the spherical member and the concave portion. operating device. An engaging portion is formed on the inner peripheral surface of the rotating operation member, and an engaging portion is formed on the reflecting member. 5. The rotary operating device according to claim 1 , wherein the rotary operating device is held on the peripheral surface of the rotary operating member. 3. The locking portion is a concave portion that is concave in the direction of the rotation axis of the rotary operation member, and the engaging portion is a convex portion that is convex in the direction of the rotation axis of the rotary operation member. 6. The rotary operation device according to 5 . The inner wall of the recessed portion is composed of a tapered slope portion and a planar flat portion, and the overlapped portion where the first end and the second end overlap is not the slope portion, but the slope portion. 7. The rotary operation device according to any one of claims 1 to 6, wherein the rotary operation device is positioned on a plane portion . 8. A tip end of the first end portion entering the recessed portion and an inner wall of the recessed portion are separated from each other in the circumferential direction of the inner peripheral surface of the rotary operation member. The rotary operation device according to any one of Claims 1 to 3. 9. The detector according to any one of claims 1 to 8 , characterized in that said detection means has a light-emitting portion for projecting light onto said reflecting member, and a light-receiving portion for receiving reflected light reflected by said reflecting member. The rotary operation device according to 1. A rotary operation device according to any one of claims 1 to 9 ;
and control means for setting the set value according to the detection result of the detection means.

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