JP2016224294A - Electronics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronic equipment such that a click feeling can be obtained when an operation ring is operated to rotate and a rotational state can be detected.SOLUTION: Electronic equipment comprises: a cylinder member 106 which is fitted to an operation ring 105 while restricted from rotating relative to the operation ring 105, and also provided with a comb-shaped part 106a at one end part; a cylinder member 104 which is formed of a material differing in glossiness from the cylinder member 106, fitted to the operation ring 105 while opposed axially to the comb-shaped part 106a, and provided with a comb-shaped part 104a engaging the comb-shaped part 106a; a base member 107 which has a plurality of click groove parts 107a formed, and holds the cylinder member 104 rotatably; and a reflection type optical sensor 111 which is provided to the base member 107 and detects a rotational state of the operation ring 105. The sensor 111 is arranged opposite the position where the comb-shaped parts 104a, 106a engage each other, and the cylinder member 106 is provided with an elastic projection part 106b which engages the click groove parts 107a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic apparatus including an imaging device such as a digital camera or a digital video camera.

  Imaging devices such as digital cameras are becoming smaller and more functional, and even in compact cameras, zoom operations, shutter speeds, etc. can be achieved by rotating the operation ring provided on the outer periphery of the lens barrel. Some settings can be changed.

  In a conventional imaging apparatus of this type, a detection means for detecting the rotation direction and the rotation amount of an annular member that rotates integrally with the operation ring, and a click feeling in the rotation direction of the operation ring when the operation ring is rotated. And a click mechanism for generating the same have been proposed. In this proposal, the detection means and the click mechanism are arranged in a space formed between the lens barrel and the bottom surface of the apparatus main body (Patent Document 1).

JP 2011-39385 A

  However, in Patent Document 1, since the click mechanism and the detection means are arranged on the flange portion of the annular member, a space in the radial direction of the lens barrel is required. It has become. In addition, since the click mechanism requires parts such as a ball, a spring, and a spring holding member, the number of parts is increased, thereby preventing cost reduction.

  Therefore, the present invention can detect the rotation state of the operation ring without incurring an increase in size, and further reduce the cost by reducing the number of parts of the click mechanism, while rotating the operation ring. An object is to provide an electronic device capable of obtaining a click feeling.

  In order to achieve the above object, an electronic device of the present invention is fitted to an operation ring capable of rotating operation, and an inner peripheral portion of the operation ring in a state in which rotation is restricted with respect to the operation ring. A first cylindrical member provided with a first comb-shaped portion in which a plurality of protruding portions protruding in the axial direction are continuously arranged in the rotation direction, and the first cylindrical member and the reflection It is formed of a material having a different rate, and is fitted to the inner peripheral portion of the operation ring in a state of being opposed to the first comb-shaped portion and the axial direction of the operation ring. A second cylindrical member provided with a second comb-tooth-shaped portion to be engaged and a plurality of click grooves are formed along the rotation direction of the operation ring, and hold the second cylindrical member rotatably. A base member and a rotation state of the operation ring provided on the base member; A reflection type optical sensor for detecting, and the reflection type optical sensor is disposed in a radial direction at a position where the first comb tooth shape portion and the second comb tooth shape portion are engaged with each other. The first cylindrical member is provided with an elastic protrusion that engages with the click groove.

  According to the present invention, it is possible to detect the rotation state of the operation ring without causing an increase in size, and to reduce the number of parts of the click mechanism and to reduce the cost, while the click feeling during the rotation operation of the operation ring. Can be obtained.

It is a disassembled perspective view of the front cover unit of the digital camera which is an example of embodiment of the electronic device of this invention. It is a perspective view which shows the internal structure of a front cover unit. (A) is a side view of a bearing member, (b) is a front view of a bearing member. (A) is a front view of a click plate, (b) is a side view of a click plate. It is a perspective view which shows the state by which the click plate was fixed to the zoom ring. It is a perspective view which shows the state by which the click plate and the bearing member were being fixed to the zoom ring. (A) is a side view of a zoom ring, (b) is the sectional view on the AA line of (a). It is the B section enlarged view of Drawing 7 (b). (A) is the figure which looked at the front cover unit from the front side, (b) is a top view of the front cover unit shown in (a). It is CC sectional view taken on the line of Fig.9 (a).

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

  FIG. 1 is an exploded perspective view of a front cover unit of a digital camera which is an example of an embodiment of an electronic apparatus according to the present invention. In the present embodiment, a digital camera is exemplified as the electronic device, but an imaging device other than the digital camera and other electronic devices may be used.

  The front cover unit shown in FIG. 1 includes a cap 101, an O-ring 102, a focus ring 103, a bearing member 104, a zoom ring 105, a click plate 106, a front cover 108, and a base member 107 from the subject side to the image plane side. . The zoom ring 105 corresponds to an example of the operation ring of the present invention.

  The O-ring 102 is made of a rubber material, and is fixed by being fitted into a groove (not shown) formed in the cap 101. The bearing member 104 is formed in a cylindrical shape, is disposed between the focus ring 103 and the zoom ring 105, and is fixed in a state in which the rotation is restricted with respect to the zoom ring 105. The outer periphery of the focus ring 103 and the zoom ring 105 is knurled so as to be easily gripped and rotated by the user.

  The click plate 106 is formed in a cylindrical shape and is restricted from rotating with respect to the zoom ring 105. The front cover 108 is formed by drawing a metal material such as aluminum, and forms an exterior on the front side of the camera body. An inner base 109 formed of a synthetic resin material such as polycarbonate is fixed to the back side of the front cover 108 by adhesion or the like. A grip 110 is fixed to the left side when viewed from the front side of the front cover 108.

  The base member 107 is formed in a cylindrical shape using a metal material such as aluminum, and is fixed to the inner base 109 via a screw 113 or the like. A photoreflector 111 for detecting the rotation position of the zoom ring 105 is fixed to the base member 107 by a holder member 112.

  In the present embodiment, the front cover unit of the digital camera is configured by the above configuration.

  FIG. 2 is a perspective view showing the internal structure of the front cover unit. As shown in FIG. 2, the inner base 109 is fixed to the back side of the front cover 108, and the image plane side end of the base member 107 is fixed to the inner base 109. A focus ring 103 and a zoom ring 105 are rotatably held on an outer peripheral portion of a portion of the base member 107 protruding from the front cover 108 to the front side.

  An opening (not shown) is formed at a position corresponding to the zoom ring 105 of the base member 107, and a photo reflector 111 is provided in the opening. The photo reflector 111 is connected to a substrate (not shown) via the flexible cable 114 and transmits a signal.

  The photo reflector 111 detects the rotation direction and amount of rotation of the zoom ring 105 by detecting an input signal by reflected light from a detection pattern formed on the inner peripheral side of the zoom ring 105. The photo reflector 111 corresponds to an example of a reflective optical sensor of the present invention.

  3A is a side view of the bearing member 104, and FIG. 3B is a front view of the bearing member 104. As shown in FIG. 3, at one end of the bearing member 104, a plurality of protruding portions protruding in the axial direction are continuously arranged in the circumferential direction at substantially equal intervals, whereby the comb-shaped portion 104a is formed. Is formed. Forty-five protrusions constituting the comb-shaped portion 104a are disposed, and 45 grooves between the protrusions adjacent to each other in the circumferential direction are also disposed.

  4A is a front view of the click plate 106, and FIG. 4B is a side view of the click plate 106. As shown in FIG. 4, the click plate 106 also has a plurality of protruding portions that protrude in the axial direction continuously arranged at substantially equal intervals in the circumferential direction at one end, similarly to the bearing member 104. Thereby, the comb-tooth shaped part 106a is formed. Similarly to the bearing member 104, 45 protrusions constituting the comb-tooth shaped part 106a are also arranged, and 45 grooves between the protrusions adjacent to each other in the circumferential direction are also arranged.

  The click plate 106 is formed by bending a single sheet metal, and as shown in FIG. 4A, a slit-shaped portion 106d is formed in a part of the circumferential direction. As a result, parts can be processed without performing complicated processing such as drawing, so that costs can be reduced. Further, the peripheral wall of the click plate 106 is provided with a leaf spring-like elastic projection 106b and an axial retaining shape portion 106c constituting a click mechanism described later.

  FIG. 5 is a perspective view showing a state in which the click plate 106 is fixed to the zoom ring 105. FIG. 6 is a perspective view showing a state where the click plate 106 and the bearing member 104 are fixed to the zoom ring 105.

  As shown in FIG. 5, a projection 105a and a locking claw 105b are formed on the inner periphery of the zoom ring 105, and the click plate 106 is fitted with the comb-shaped portion 106a facing the subject side. . In such a fitting state, the slit-shaped portion 106d of the click plate 106 is engaged with the projection 105a of the zoom ring 105, thereby positioning in the rotational direction. The axial positioning is performed by locking the retaining shape portion 106c of the click plate 106 to the locking claw 105b of the zoom ring 105.

  As shown in FIG. 6, the bearing member 104 is fitted to the inner peripheral portion of the zoom ring 105 from the subject side opening of the zoom ring 105 with the comb-shaped portion 104 a facing the image plane side, and the click plate 106. The zoom ring 105 is disposed so as to face the axial direction. At this time, the plurality of protrusions and grooves of the comb-shaped portion 104a of the bearing member 104 are respectively positioned at the substantially central portion in the axial direction of the zoom ring 105 and the plurality of grooves and protrusions of the comb-shaped portion 104a of the click plate 106. Engage with the part. Thereby, the rotation direction of the bearing member 104 is regulated.

  At the position where the comb-tooth shaped portions 104a and 106a are engaged with each other, the photo reflector 111 is disposed to face the radial direction. When the zoom ring 105 is rotated in this state, the click plate 106 and the bearing member 104 also rotate together.

  Then, the photo reflector 111 receives the reflected light from the comb-shaped portions 104a and 106a to detect the rotation direction and the rotation amount of the zoom ring 105. In FIG. 6, for convenience of explanation, the holder member 112 and the base member 107 are not shown.

  Here, the bearing member 104 is formed of a synthetic resin material, and the surface of the comb-shaped portion 104a is subjected to a texture process in order to reduce the reflectance. The bearing member 104 corresponds to an example of a second cylindrical member of the present invention, and the comb-shaped portion 104a corresponds to an example of a second comb-shaped portion of the present invention.

  On the other hand, the click plate 106 is formed of a metal material having a high reflectivity so that the reflectivity of the surface of the comb-shaped portion 106a is high. In the present embodiment, the click plate 106 is formed using a stainless steel plate in order to increase the reflectance of the surface of the comb-shaped portion 106a.

  Accordingly, it is possible to form a light and dark detection pattern for detection by the photo reflector 111 on the inner peripheral portion of the zoom ring 105 without performing special surface treatment such as painting or vapor deposition. The click plate 106 corresponds to an example of the first cylindrical member of the present invention, and the comb tooth shape portion 106a corresponds to an example of the first comb tooth shape portion of the present invention.

  7A is a side view of the zoom ring 105, and FIG. 7B is a cross-sectional view taken along the line AA in FIG. 7A. FIG. 8 is an enlarged view of a portion B in FIG.

  As shown in FIG. 8, the photo reflector 111 is held by a holder member 112. In FIG. 7B and FIG. 8, the base member 107 that fixes the holder member 112 is not shown for convenience of explanation. The photo reflector 111 includes two elements 111 a that are spaced apart from each other in the rotation direction of the zoom ring 105. Each element 111a receives reflected light from the light and dark detection patterns of the comb-tooth shaped portions 104a and 106a, and detects the rotation amount and the rotation direction of the zoom ring 105 from the input waveform pattern.

  By the way, when the photoreflector 111 receives reflected light, if the difference in reflectance between the bright part and the dark part is small, a detection error may occur. Therefore, it is desirable that the difference in reflectance is as large as possible.

  In the present embodiment, a radial step is provided between the surface of the comb-shaped portion 106a and the surface of the comb-shaped portion 104a, and the comb-shaped portion 106a that is brighter than the comb-shaped portion 104a that is a dark portion. Is brought close to the photo reflector 111. Thereby, it becomes possible to set the reflectance of the surface of the comb-tooth-shaped part 106a high, and the difference of the reflectance of a bright part and a dark part can be enlarged.

  Next, with reference to FIGS. 9 and 10, a click mechanism that provides a click feeling when the zoom ring 105 is rotated will be described.

  9A is a view of the front cover unit as viewed from the front side, and FIG. 9B is a top view of the front cover unit shown in FIG. 9A. FIG. 10 is a cross-sectional view taken along the line CC of FIG.

  As shown in FIG. 10, the bearing member 104 is rotatably held integrally with the click plate 106 and the zoom ring 105 with respect to the base member 107. The inner peripheral part on the subject side of the zoom ring 105 is fitted to the outer peripheral part of the bearing member 104. The outer peripheral portion on the image plane side of the zoom ring 105 is supported so as to be rotatable with respect to the inner peripheral portion of the inner base 109.

  Further, the leaf spring-like elastic protrusion 106 b of the click plate 106, whose rotation is restricted with respect to the zoom ring 105, is disposed so as to protrude inward in the radial direction of the click plate 106 and engages with the click groove 107 a of the base member 107. It is in a state. When the zoom ring 105 is rotated in this state, the elastic protrusion 106b gets over the click groove 107a to generate a click feeling.

  As shown in FIG. 1, a plurality of click groove portions 107 a are formed at predetermined intervals in the circumferential direction on the outer peripheral portion of the base member 107, so that a click feeling is generated at a predetermined angle and stopped when the zoom ring 105 is rotated. It becomes possible.

  As described above, in this embodiment, by engaging the comb tooth shape portion 104a of the bearing member 104 and the comb tooth shape portion 106a of the click plate 106 at the inner peripheral portion of the zoom ring 105, the photo reflector 111 is provided. A detection pattern is formed. Thereby, the rotation state of the zoom ring 105 can be detected without increasing the size of the digital camera.

  Further, in this embodiment, the click feeling when the zoom ring 105 is rotated by engaging the leaf spring-like elastic protrusion 106 b formed on the click plate 106 with the click groove 107 a of the base member 107. Can be generated. Thereby, a ball, a spring, a spring holder, and the like for the click mechanism become unnecessary, and a click feeling can be obtained when the zoom ring 105 is rotated while reducing the number of parts of the click mechanism and reducing the cost.

  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.

104 Bearing member 104a Comb-tooth shaped part 105 Zoom ring 106 Click plate 106a Comb-tooth shaped part 106b Elastic protrusion 107 Base member 107a Click groove part 111 Photo reflector

Claims (5)

An operation ring that can be rotated,
A plurality of protrusions protruding in the axial direction are continuously arranged in the rotation direction at one end of the operation ring in a state in which rotation with respect to the operation ring is restricted. A first cylindrical member provided with a first comb tooth-shaped portion;
Formed of a material having a reflectance different from that of the first cylindrical member, and fitted to the inner peripheral portion of the operation ring in a state of being opposed to the first comb-shaped portion and the axial direction of the operation ring, A second cylindrical member provided with a second comb-shaped portion that engages with the first comb-shaped portion;
A plurality of click grooves formed along the rotation direction of the operation ring, and a base member that rotatably holds the second cylindrical member;
A reflective optical sensor provided on the base member for detecting the rotation state of the operation ring,
The reflective optical sensor is disposed to face the radial direction at a position where the first comb-shaped portion and the second comb-shaped portion are engaged with each other,
The electronic device according to claim 1, wherein the first cylindrical member is provided with an elastic protrusion that engages with the click groove.   The electronic device according to claim 1, wherein the first cylindrical member is formed of a material having a higher reflectance than the second cylindrical member.   The electronic apparatus according to claim 2, wherein the first cylindrical member is made of a metal material, and the second cylindrical member is made of a synthetic resin material.   A step in the radial direction is provided between the first comb-tooth shaped portion and the second comb-tooth shaped portion, and the first comb-tooth shaped portion is moved from the second comb-tooth shaped portion. The electronic apparatus according to claim 2, wherein the electronic apparatus is disposed close to the reflective optical sensor.   5. The electronic apparatus according to claim 1, wherein the base member is disposed on an outer peripheral portion of a lens barrel of the imaging apparatus.