Electronic apparatus and accessory

Abstract

To prevent contact between contact points or terminals not corresponding to each other in mounting an accessory on an electronic apparatus.SOLUTION: An accessory 100 is removably mounted on a mounting part 190 provided on an electronic apparatus 1. The accessory has engagement parts 125a, 125b that allow the accessory to be engaged with and held on the mounting part with the accessory arranged at a first position relative to the mounting part 190 being rotated in a first direction to a second position, and a plurality of contact points 310 that is arranged in the first direction at the second position to be brought into contact with corresponding terminals of a plurality of terminals 185 arranged in the first direction on the mounting part. The interval angle A between adjacent contact points of the plurality of contact points is larger than the rotation angle B of the accessory from the first position to the second position.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to an electronic device and a detachable accessory therefor. [Background technology]

[0002] As a method for transmitting signals between an electronic device and an accessory detachably attached thereto, there is a method in which a signal transmission path is formed by contacting a terminal provided on the electronic device with a corresponding terminal or contact provided on the accessory. In such a signal transmission method, a holding structure is often provided to prevent the electronic device and the accessory from being physically separated so that a normal connection state with the accessory is maintained even if the electronic device is subjected to an external force such as an impact.

[0003] Patent document 1 discloses a holding structure in which holding claws (bayonet claws) provided on an electronic device and an accessory engage with each other by rotating the electronic device and accessory relative to each other in a direction different from the contact direction of the terminals, each of which has a plurality of terminals arranged at equal intervals in an arc shape. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2007-101656 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, as in Patent Document 1, when the electronic device and the accessory rotate relative to each other, the mismatched terminals may come into contact with each other, causing the electronic device to malfunction or the terminals to wear out.

[0006] The present invention provides an accessory and electronic device that can prevent contact between incompatible contacts or terminals when the accessory is attached to the electronic device. [Means for solving the problem]

[0007] An accessory according to one aspect of the present invention is detachably attached to a mounting part provided on an electronic device. The accessory has an engagement part that engages and holds the accessory with the mounting part when the accessory, which is arranged at a first position relative to the mounting part, is rotated in a first direction to a second position, and a plurality of contacts that are arranged in the first direction so as to come into contact with corresponding terminals among a plurality of terminals arranged in the first direction on the mounting part at the second position. The accessory is characterized in that an interval angle between adjacent contacts among the plurality of contacts is larger than a rotation angle of the accessory from the first position to the second position.

[0008] Another aspect of the present invention provides an electronic device having a mounting section to which an accessory is detachably mounted, a holding section that engages and holds the accessory with the mounting section when the accessory arranged at a first position relative to the mounting section is rotated in a first direction to a second position, and a plurality of terminals arranged in the first direction so as to contact corresponding contacts among the plurality of contacts at the second position, wherein an angular interval between adjacent terminals among the plurality of terminals is greater than an angle of rotation of the accessory from the first position to the second position. Effect of the Invention

[0009] According to the present invention, it is possible to prevent contact between contacts and terminals that do not correspond to each other when attaching an accessory to an electronic device. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing an imaging apparatus according to a first embodiment. [Diagram 2] FIG. 1 is a block diagram showing a configuration of an imaging apparatus according to a first embodiment. [Diagram 3] FIG. 2 is a perspective view showing the operating device according to the first embodiment. [Figure 4] FIG. 2 is a diagram showing a circuit board of the operating device according to the first embodiment. [Diagram 5] FIG. 2 is an exploded perspective view of the operating device according to the first embodiment. [Figure 6] FIG. 2 is a perspective view showing a mounting portion of the imaging device according to the first embodiment. [Figure 7] FIG. 4 is a diagram showing a contact land of the operating device according to the first embodiment. [Figure 8] FIG. 11 is a diagram showing a circuit board of the operating device according to the second embodiment. [Figure 9] FIG. 11 is a diagram showing a contact land of the operating device according to the second embodiment. [Figure 10] FIG. 11 is a diagram showing a circuit board of the operating device according to the third embodiment. [Figure 11] FIG. 11 is a diagram showing a contact land of the operating device according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. EXAMPLES

[0012] Fig. 1(a) shows an imaging device 1 as an electronic device according to a first embodiment of the present invention, viewed from the diagonal front side, and Fig. 1(b) shows the imaging device 1 viewed from the diagonal rear side. The display unit 2 displays images and various information. The touch panel 3 can detect touch operations on the display surface (operation surface) of the display unit 2.

[0013] The power switch 4 is operated by a user to switch the power of the imaging device 1 between ON and OFF. The shutter button 5 is operated by a user to give a shooting instruction. The mode switching dial 6 is operated by a user to switch between various modes. The mode switching dial 6 is an operating device as an accessory that is detachable from the imaging device 1, and details thereof will be described later.

[0014] The terminal cover 7 is provided to protect a connector (not shown) to which a cable or the like is connected for connecting an external device to the imaging device 1. The main electronic dial 8 is rotated by a user to change settings such as the shutter speed and aperture value. The changeover switch 10 is operated by a user to switch between a still image recording mode and a movie recording mode.

[0015] The sub electronic dial 11 is operated by the user to move a selection frame such as an AF frame, change a displayed image, and so on.

[0016] An operation unit 9 is configured on the rear side of the imaging device 1. The operation unit 9 includes a plurality of push buttons and an operation dial 12. The operation dial 12 is rotated by the user to change settings such as the shutter speed and aperture value. The SET button 13 is operated by the user to confirm a selected item, etc. The selection member 26 is a cross key (four-way key) whose upper, lower, left, and right portions can be pressed, and is operated by the user to select a menu item for making various settings.

[0017] The video button 14 is operated by the user to start and stop video capture (recording). The AE lock button 15 is operated by the user to fix the exposure value in the capture standby state. The AF position switching button 16 is operated by the user to select the AF frame. The AF-on button 35 is operated by the user to focus on the AF frame selected in the capture standby state. The enlarge button 37 is operated by the user to turn the enlargement mode on and off while a live view (LV) image is displayed in the capture mode. By turning the enlargement mode on and then operating the main electronic dial 8, the LV image can be enlarged and reduced. In the playback mode, it also functions as a enlargement button for enlarging the playback image.

[0018] The information button 38 is operated by the user to play back and display the image data recorded in the playback mode. The playback button 17 is operated by the user to switch between the image capture mode and the playback mode. By operating the playback button 17 during the image capture mode, the mode is switched to the playback mode, and the latest image data among the image data recorded on a recording medium (not shown) can be displayed on the display unit 2. The erase button 39 is operated by the user to erase the recorded image data selected in the playback mode.

[0019] The menu button 19 is operated by the user to display a menu screen for making various settings on the display unit 2. The user can intuitively make various settings by operating the operation dial 12 and the SET button 13 while looking at the menu screen displayed on the display unit 2. The rating button 18 is operated by the user to add flag information to recorded image data selected in the playback mode.

[0020] The imaging device 1 is also provided with a microphone hole 30 and a speaker hole 31. A microphone (not shown) arranged inside the microphone hole 30 is used to record audio data during video capture. A speaker (not shown) arranged inside the speaker hole 31 is used to play back recorded audio data and audio data built into the imaging device 1.

[0021] The eyepiece 21 is a portion through which a user looks into an electronic viewfinder (EVF) 22. The user can view an image displayed on an EVF 22 provided inside the eyepiece 21. The eyepiece detection unit 23 detects whether or not the user is looking into (putting his / her eye) the eyepiece 21. The lid 24 is provided to close a slot that stores a recording medium.

[0022] The grip section 25 has a shape that allows the user to easily hold the imaging device 1 with the right hand. In a state in which the imaging device 1 is held by gripping the grip section 25 with the little finger, ring finger, and middle finger of the right hand, the shutter button 5 and the main electronic dial 8 are disposed at positions that can be operated with the index finger of the right hand. In the same state, the sub electronic dial 11 and the selection member 26 are disposed at positions that can be operated with the thumb of the right hand.

[0023] The imaging element 90 is a photoelectric conversion element such as a CMOS sensor, and photoelectrically converts a subject image formed by an interchangeable lens (70 in FIG. 2), not shown. The lens mount section 28 is a portion for mounting a detachable lens on the imaging device 1. A terminal 20 is provided inside the lens mount section 28 to enable communication between the imaging device 1 and the lens.

[0024] Lock button 27 is disposed near the outer periphery of lens mount section 28, and is operated by the user to release a retention lock function that functions when a lens is attached to imaging device 1, thereby enabling removal of the lens.

[0025] A strap can be passed through the strap insertion sections 40 and 41 to hang the imaging device 1 around the neck or the like when carrying it around.

[0026] 2 shows the electrical configuration of the imaging device 1 and the interchangeable lens 70. The interchangeable lens 70 is equipped with an imaging optical system 74 composed of a plurality of lenses and an aperture. The interchangeable lens 70 has a lens control unit 72 and a lens driving unit 73. The lens control unit 72 controls the overall operation of the interchangeable lens 70. The lens control unit 72 is capable of communicating with a camera control unit 81 of the imaging device 1 via the terminal 20. The lens driving unit 73 drives the focus lens, zoom lens, aperture, etc. in the imaging optical system 74 in response to instructions from the lens control unit 72.

[0027] The imaging device 1 has a camera control unit 81 and an imaging element 90. The camera control unit 81 controls the overall operation of the imaging device 1 and the interchangeable lens 70. The imaging element 90 receives light from a subject (subject image) via the imaging optical system 74 and the shutter mechanism unit 89, photoelectrically converts the subject image, and outputs an imaging signal as an electrical signal. The image processing unit 83 performs image processing such as A / D conversion, white balance adjustment, gamma correction, and interpolation calculation on the imaging signal output from the imaging element 90 to generate image data.

[0028] The audio control unit 82 outputs audio data acquired through the above-mentioned microphone to the image processing unit 83. The image processing unit 83 synthesizes the audio data with the image data and outputs the synthesized data to the storage unit 84. The storage unit 84 includes a non-volatile memory and stores various data such as image data and audio data. The image data output from the image processing unit 83 is displayed on the display unit 2.

[0029] The camera system control unit 81 performs processing for storing data in a storage unit 84 and processing for outputting data read from the storage unit 84 to a display unit 85 for presentation to a user. The display unit 85 in Fig. 2 corresponds to the display unit 2 and the outside-finder display unit 4 in Figs. 1(a) and (b).

[0030] The shake detection unit 87 detects camera shake such as hand shake using a gyro sensor or the like. Specifically, the shake detection unit 87 detects rotational shake in the pitch direction, yaw direction, and roll direction. The shake detection signal output from the shake detection unit 87 is input to the camera control unit 81.

[0031] The camera control unit 81 controls the imaging device 1 and the interchangeable lens 70 in response to an operation signal output from an operation detection unit 86 that detects the operation of the above-mentioned operating members (push buttons, dials, etc.). The camera control unit 81 includes a CPU and an MPU, and performs various processes according to programs. For example, the camera control unit 81 obtains information on a focus evaluation value and a brightness value from an imaging signal or image data output from the imaging element 90, and performs optical adjustment processing of the imaging optical system 74 based on this information.

[0032] The shake correction unit 88 performs image shake correction by moving (shifting) the image sensor 90 on a plane perpendicular to the optical axis 99 in response to a control command from the camera control unit 81 that has received a shake detection signal from the shake detection unit 87. The shutter mechanism unit 89 controls the exposure time for the image sensor 90 by moving the shutter curtain 42 shown in FIG.

[0033] The above-mentioned mode switching dial 6 is an operation device 100 that is detachable (replaceable) from the imaging device 1. The operation device 75 communicates with the imaging device 1 via a communication terminal 79. The operation device 100 has an operation detection unit 76 that detects a user's operation on the operation device 100, and outputs an operation signal from the operation detection unit 76 to the imaging device 1. Note that there are multiple types of operation devices 100, such as an exposure change dial and a sub-dial, in addition to the mode switching dial 6. The imaging device 1 performs a mode switching operation, an exposure change operation, and a sub-dial corresponding operation according to the type of the attached operation device 100. Specifically, when the operation device 100 is attached to the imaging device 1, type information 77 indicating the type is transmitted from the operation device 100 to the signal switching unit 80 via the communication terminal 79. When the signal switching unit 80 determines the type of the attached operation device 75 from the type information 77, it inputs the operation signal input from the operation detection unit 76 via the communication terminal 79 to a predetermined terminal of the camera control unit 81.

[0034] Next, the operation device 100 (the mode switching dial 6) will be described in detail. Figures 3(a) and (b) show the external appearance of the operation device 100 as viewed obliquely from above and below, respectively.

[0035] The operating device 100 has an upper cover member 110 and a lower cover member 120 that constitute a fixed part, and a dial member 101 as a rotation operation member that is rotatable with respect to the fixed part. A plurality of indexes 103 indicating a plurality of imaging modes are provided on the top surface of the dial member 101. By rotating the dial member 101 so that one of the indexes 103 matches an index provided on the imaging device 1, the imaging mode corresponding to the index 103 is set in the imaging device 1.

[0036] A circuit board 200 is provided on the underside of the operating device 100. A plurality of contact lands 210 are formed on the circuit board 200, and these contact lands 210 are exposed from the lower cover member 120.

[0037] Furthermore, lower cover member 120 has protrusions 125a and 125b as engagement portions at two opposite locations on the outer periphery of the lower cover member 120. Protrusion 125a is formed to be wider than protrusion 125b in the circumferential direction of lower cover member 120. Furthermore, click groove portion 122 is formed in protrusion 125a.

[0038] 4(a) and (b) show the circuit board 200 as viewed obliquely from the upper side (dial member side) and the lower side (lower cover member side), respectively. FIG. 4(c) shows the bottom surface of the circuit board 200.

[0039] The circuit board 200 is a plate-shaped wiring board, and has a structure in which a copper foil pattern is formed on an insulating glass epoxy base material, and an insulating resist is further provided on the copper foil pattern. The copper foil pattern exposed from an opening provided in the insulating resist is gold-plated.

[0040] On the upper surface of the circuit board 200, a dial pattern 205 is formed as an exposed copper foil pattern. Similarly, on the lower surface of the circuit board 200, a plurality of contact lands 310 are exposed as a copper foil pattern through openings in an insulating resist. A gray code is formed by a combination of contacts between a plurality of connection parts of the dial pattern 205 and two sliding parts (described later) of a terminal brush 130. The plurality of contact parts of the dial pattern 205 and the plurality of contact lands 210 are electrically connected to each other in a one-to-one correspondence.

[0041] The multiple contact lands 210 are arranged at equal intervals on a circumference on the lower surface of the circuit board 200. The arrangement interval (the interval angle or angular pitch between adjacent contacts) of the multiple contact lands 210 is angle A as shown in Fig. 4(c). The multiple contact lands 210 include one GND (reference voltage) land 2101 which is a first contact for ground, one power supply land 2102 which is a second contact for power supply, one detection signal land 2103, and five operation signal lands 2104. The detection signal land 2103 and the operation signal land 2104 are third contacts for signals.

[0042] The detection signal land 2103 is a land for outputting a signal from the electronic component 220 mounted on the circuit board 200. The electronic component 220 receives a drive power supply from the power supply land 2102 and outputs a signal (here, a signal indicating type information 77) to the detection signal land 2103. The imaging device 1 receives the signal from the detection signal land 2103 and determines the type of the operating device 100.

[0043] Furthermore, the circuit board 200 has positioning holes 203a and 203b and a recess 204 on its outer periphery.

[0044] 5 shows an exploded view of the operating device 100. The dial member 101 is a circular member formed from a resin mold when viewed from above. A screw hole portion 102 is formed in the lower center of the dial member 101.

[0045] The upper cover member 110 is a circular member formed from a resin mold when viewed from above. The upper cover member 110 has a hole 111 in the center, and storage sections 112a, 112b are formed around the hole 111. Compression springs 170a, 170b are arranged in the storage sections 112a, 112b. The compression springs 170a, 170b bias the click balls 171a, 171b toward a plurality of recesses (not shown) provided in the circumferential direction on the lower surface of the dial member 101. When the dial member 101 is rotated, the click balls 171a, 171b move in and out of the recesses, generating a clicking sensation.

[0046] The rotating member 140 has crimped portions 142a and 142b. The terminal brush 130 is formed of a metal having electrical conductivity. The terminal brush 130 has sliding portions 131a and 131b. The terminal brush 130 is fixed to the crimped portions 142a and 142b of the rotating member 140 by heat welding or the like through the holes 132a and 132b of the terminal brush 130. The rotating member 140 and the terminal brush 130 are fixed to the dial member 101 so as to be rotatable together with each other by fastening a screw 162 passing through the center of the rotating member 140 and the terminal brush 130 to the screw hole portion 102 of the dial member 101 through the upper cover member 110. With the above configuration, the dial member 101, the rotating member 140, and the terminal brush 130 are rotatably held relative to the upper cover member 110.

[0047] The lower cover member 120 is a member formed from a resin mold and has an opening 121 in its center. The circuit board 200 is positioned with respect to the lower cover member 120 by inserting positioning bosses 127a, 127b formed on the lower cover member 120 into positioning holes 203a, 203b of the circuit board 200. At this time, the circuit board 200 is arranged so that the dial pattern 205 is located on the upper side. The circuit board 200 is fixed to the lower cover member 120 by fastening the recess 204 of the circuit board 200 to a screw hole 128 provided near the outer periphery of the lower cover member 120 with a screw 161.

[0048] The lower cover member 120 to which the circuit board 200 is fixed is positioned relative to the upper cover member 110 by inserting its positioning bosses 129a, 129b into positioning holes 114a, 114b of the upper cover member 110. The screws 160a, 160b, 160c inserted into holes 126a, 126b, 126c of the lower cover member 120 are fastened to screw holes 113a, 113b, 113c of the upper cover member 110.

[0049] With this configuration, the dial member 101, the rotating member 140, and the terminal brush 130 are rotatably held relative to the upper cover member 110, the lower cover member 120, and the circuit board 200. That is, the sliding portions 131a and 131b of the terminal brush 130 slide on the dial pattern 205 of the circuit board 200 in conjunction with the rotation of the dial member 101. The combination of contact between the dial pattern 205 and the terminal brush 130 is switched, whereby the rotation operation of the dial member 101 is detected. A signal generated by the contact between the dial pattern 205 and the terminal brush 130 is transmitted to the imaging device 1 via the contact land 210 and a terminal 185, which will be described later. That is, a signal according to the rotation position of the dial member 101 is transmitted to the imaging device 1.

[0050] Fig. 6(a) shows a mounting portion 190 provided on the imaging device 1, to which the operating member 100 is attached. Fig. 6(a) shows the mounting portion 190 seen from diagonally above. Fig. 6(b) shows the mounting of the operating device 100 to the mounting portion 190.

[0051] The top cover 180 is an exterior member on the top surface of the imaging device 1. A circular recess 181 is formed in the top cover 180 when viewed from above, and a mounting section 190 is provided in the recess 181. A plurality of terminals 185 are arranged on a bottom surface 188 of the recess 181 (mounting section 190) at equal intervals (equal angular pitch) on a circumference. The terminals 185 are biased by a spring (not shown) from the inside of the imaging device 1 toward the outside. The terminals 185 are configured so that when the operating device 100 is mounted, the terminals 185 are pushed by a contact land 210 of the operating device 100 by a certain amount toward the inside of the imaging device 1. That is, when the operating device 100 is mounted on the mounting section 190, the terminals 185 are electrically connected in a state in which they are biased against the contact land 210 of the operating device 100. The terminals 185 are electrically connected to a circuit board (not shown) provided inside the imaging device 1, and a signal from the operating device 100 is transmitted to the circuit board via the terminals 185.

[0052] Rail portions 183a and 183b are formed on the side surfaces of the recess 181 as holding portions extending in the circumferential direction, and openings 182a and 182b are formed between the rail portions 183a and 183b. The opening 182a is formed to be wider in the circumferential direction than the opening 182b.

[0053] Convex portion 125a of operating device 100 can be inserted into opening 182a, and convex portion 125b of operating device 100 can be inserted into opening 182b. On the other hand, convex portion 125a formed wider than convex portion 125b cannot be physically inserted into opening 182b. This prevents operating device 100 from being attached to mounting portion 190 in a phase different from a predetermined attachment phase.

[0054] Next, the mounting of the operating device 100 to the mounting portion 190 will be described. The operating device 100 is moved in the direction of the arrow X in FIG. 6(b) toward the recess 181 of the top cover 180. Then, the convex portion 125a of the operating device 100 is inserted into the opening 182a, and the convex portion 125b is inserted into the opening 182b. The position of the operating device 100 at this time corresponds to the first position. Furthermore, the operating device 100 is rotated in the direction of the arrow Y in FIG. 6(b). As a result, the convex portion 125a moves in the circumferential direction inside the rail portion 183a, and the convex portion 125b moves in the circumferential direction inside the rail portion 183b. When the convex portion 125a reaches the abutment portion 184, the click ball (not shown) is biased by the click portion 122 shown in FIG. 3(b) and falls, generating a clicking sensation, and the operating device 100 is fixed to the mounting position (second position). In the mounting position, the protrusions 125a, 125b are engaged and held (bayonet coupled) by the rails 183a, 183b, and are physically prevented from coming off the operating device 100 from the mounting part 190 in the direction opposite to the arrow X direction (insertion direction).

[0055] 7(a) and (b) show the relationship between the contact land 210 of the operating device 100 and the terminal 185 of the imaging device 1. Fig. 7(a) shows a state in which the operating device 100 is inserted into the recess 181 of the top cover 180 before rotation (in a first position), and Fig. 7(b) shows a state in which the operating device 100 has been inserted into the top cover 180 and then rotated to reach the mounting position.

[0056] As described above, the contact lands 210 of the operating device 100 are arranged on a circle at equal intervals, and the interval between them is angle A. The terminals 185 are also arranged on a circle at equal intervals (equal pitch), and the interval between them (the interval angle or angular pitch between adjacent terminals) is angle A.

[0057] 7(a), each contact land 210 is located between adjacent terminals 185 and does not contact any of the terminals 185. Furthermore, the rail portion 183a of the top cover 180 has a length of angle B from the opening 182a to the abutment portion 184. In other words, the operating device 100 can rotate only by the rotation angle B with respect to the mounting portion 190. The angle A is greater than the angle B.

[0058] When the operating device 100 rotates in the direction of the arrow Y in Fig. 7(b) by an angle B and the protruding portion 125a reaches the abutting portion 184, the operating device 100 reaches the mounting position, and the multiple contact lands 210 and the multiple terminals 185 that correspond to each other come into contact with each other simultaneously. That is, the first, second, and third contacts come into contact with the first, second, and third terminals, respectively, simultaneously. The simultaneous contact referred to here does not have to be strictly simultaneous, and may have a slight difference that can be considered to be simultaneous.

[0059] In addition, since angle A is greater than angle B between contact land 210 and terminal 185, contact between non-corresponding contact land 210 and terminal 185 does not occur even when operating device 100 is rotated. In this manner, contact between non-corresponding contact land 210 and terminal 185 during the mounting process of operating device 100 is prevented.

[0060] According to this embodiment, when the operation device 100 is attached to the imaging device 1, it is possible to prevent terminals that do not correspond to each other from coming into contact with each other. EXAMPLES

[0061] Next, a second embodiment will be described. In the second embodiment, differences from the first embodiment will be mainly described. Figures 8(a) and (b) show the circuit board 300 as seen from the diagonally upper side (dial member side) and the diagonally lower side (lower cover member side), respectively. Figure 8(c) shows the bottom surface of the circuit board 300. The circuit board 300 is a plate-shaped wiring board, similar to the circuit board 200 of Example 1, and has a structure in which a copper foil pattern is formed on an insulating glass epoxy base material, and an insulating resist is further provided on the copper foil pattern. The copper foil pattern exposed from an opening provided in the insulating resist is gold-plated.

[0062] On the upper surface of the circuit board 300, a dial pattern 205 is formed as an exposed copper foil pattern. Similarly, on the lower surface of the circuit board 300, a plurality of contact lands 310 are exposed as a copper foil pattern through openings in an insulating resist. A gray code is formed by a combination of contacts between a plurality of connection parts of the dial pattern 205 and two sliding parts of a terminal brush 130, which will be described later. The plurality of contact parts of the dial pattern 205 and the plurality of contact lands 310 are electrically connected to each other in a one-to-one correspondence.

[0063] The contact lands 310 are arranged at equal intervals on a circumference on the lower surface of the circuit board 300. The contact lands 310 are arranged at an angle A as shown in FIG. 8(c). The contact lands 310 include one GND land 3101, one power supply land 3102, one detection signal land 3103, and five operation signal lands 3104. The detection signal land 3103 is a land for outputting a signal from the electronic component 220 mounted on the circuit board 300. The electronic component 220 receives a drive power supply from the power supply land 2102 and outputs a signal (type information) to the detection signal land 3103. The imaging device 1 receives a signal from the detection signal land 3103 and identifies the type of the operation device 100.

[0064] In this embodiment, the sizes of the GND land 3101, the power supply land 3102, the detection signal land 3103, and the operation signal land 3104 are different from one another in the circumferential direction. The GND land 3101 has a circumferential dimension C, and the detection signal land 3103 and the operation signal land 3104 have a circumferential dimension D. The power supply land 3102 has a circumferential dimension E. These dimensions have a relationship of C>D>E.

[0065] 9(a) to 9(c) show the relationship between the contact land 310 of the operating device 100 and the terminal 185 of the imaging device 1. Fig. 9(a) shows the state before the operating device 100 is inserted into the top cover 180 and rotated, and Fig. 9(b) shows the state before the operating device 100 is rotated after being inserted into the top cover 180 and reaches the mounting position (midway through rotation). Fig. 9(c) shows the state after the rotated operating device 100 reaches the mounting position.

[0066] As described above, the contact lands 310 are arranged side by side on the circumference, and the interval between them is angle A. The terminals 185 are also arranged side by side at equal intervals on the circumference, and the interval between them is angle A.

[0067] 9(a), the power supply land 3102, the detection signal land 3103, and the operation signal land 3104, each having a dimension of D or E, are positioned between the terminals 185 and do not contact the terminals 185. On the other hand, the GND land 3101, having a dimension of C, contacts the GND terminal 1851 of the terminals 185 and is in a GND connection state.

[0068] In this embodiment as well, the rail portion 183a of the top cover 180 of the imaging device 1 has a length from the opening 182a to the abutment portion 184 at an angle B (>angle A).

[0069] When the operating device 100 is rotated in the direction of arrow Y in Figure 9 (b) by an angle smaller than angle B, the detection signal land 3103 and the operation signal land 3104, which have dimension D, respectively come into contact with the detection signal terminal 1853 and the operation signal terminal 1854 of the terminal 185, and become electrically connected.

[0070] 9(c), when the operating device 100 rotates by angle B in the direction of the arrow Y and the protruding portion 125a reaches the abutting portion 184, the operating device 100 reaches the mounting position. At this time, the power land 3102 having a dimension E contacts the power terminal 1852 of the terminal 185 and is electrically connected.

[0071] In this embodiment as well, the operating device 100 is physically prevented from coming off in the direction opposite to the insertion direction by the projections 125a, 125b being engaged and held by the rail portions 183a, 183b.

[0072] As described above, in this embodiment, in the process of rotating the operation device 100 to the mounting position, after the GND land 3101 is connected to the GND terminal 1851, the detection signal land 3103 and the operation signal land 3104 are connected to the detection signal terminal 1853 and the operation signal terminal 1854. And finally, the power supply land 3102 is connected to the power supply terminal 1852. This enables a stable signal connection, and prevents problems with the communication connection with the imaging device 1 when the operation device 100 is mounted. EXAMPLES

[0073] Next, a third embodiment will be described. In the third embodiment, the differences from the first and second embodiments will be mainly described. Figures 10(a) and 10(b) show the circuit board 400 as seen from the diagonally upper side (dial member side) and the diagonally lower side (lower cover member side), respectively. Figure 10(c) shows the bottom surface of the circuit board 400.

[0074] The circuit board 400 is a plate-shaped wiring board, similar to the circuit boards 200 and 300 of Examples 1 and 2, and has a structure in which a copper foil pattern is formed on an insulating glass epoxy base material, and an insulating resist is further provided on the copper foil pattern. The copper foil pattern exposed from an opening provided in the insulating resist is gold-plated.

[0075] On the upper surface of the circuit board 400, a dial pattern 205 is formed as an exposed copper foil pattern. Similarly, on the lower surface of the circuit board 400, a plurality of contact lands 410 are exposed as a copper foil pattern through openings in an insulating resist. A gray code is formed by a combination of contacts between a plurality of connection parts of the dial pattern 205 and two sliding parts of a terminal brush 130, which will be described later. The plurality of contact parts of the dial pattern 205 and the plurality of contact lands 410 are electrically connected to each other in a one-to-one correspondence.

[0076] The operating device 100 of this embodiment has, as the contact lands 410 arranged on the lower surface of the circuit board 400, a plurality of contact lands arranged at equal intervals on a circumference and one contact land located at the center of the arrangement. The arrangement interval of the contact lands 410 on the circumference is angle A as shown in FIG. 10(c). The plurality of contact lands 410 have one GND land 4101 arranged at the center, one power supply land 4102, one detection signal land 4103, and five operation signal lands 4104 arranged on the circumference. The detection signal land 4103 is a land for outputting a signal from the electronic component 220 mounted on the circuit board 400. The electronic component 220 receives a drive power supply from the power supply land 4102 and outputs a signal (type information) to the detection signal land 4103. The imaging device 1 receives a signal from the detection signal land 4103 and determines the type of the operating device 100.

[0077] In this embodiment, the power supply land 4102 has a size different from the sizes of the detection signal land 4103 and the operation signal land 4104 in the circumferential direction. The detection signal land 4103 and the operation signal land 4104 have a circumferential dimension D, and the power supply land 4102 has a circumferential dimension E. These dimensions have a relationship of D>E.

[0078] Figures 11(a) to (c) show the relationship between the contact land 410 of the operating device 100 and the terminal 185 of the imaging device 1. Figure 11(a) shows the state before the operating device 100 is inserted into the top cover 180 and rotated, and Figure 11(b) shows the state before the operating device 100 is rotated after being inserted into the top cover 180 and reaches the mounting position (midway through rotation). Figure 11(c) shows the state after the rotated operating device 100 reaches the mounting position.

[0079] As described above, the multiple contact lands 410 are arranged with one at the center and the others lined up on the circumference, and the arrangement interval of the contact lands 410 on the circumference is angle A. Similarly, the terminals 185 are arranged with one at the center and the others lined up at equal intervals on the circumference, and the arrangement interval of the terminals 185 on the circumference is angle A.

[0080] 11(a), the power supply land 4102, the detection signal land 4103, and the operation signal land 4104, each having a dimension of D or E, are located between the terminals 185 on the circumference and do not contact those terminals 185. On the other hand, the GND land 4101 arranged at the center contacts the GND terminal 1851 arranged at the center of the terminals 185, and is in a GND connection state.

[0081] When the operating device 100 is rotated in the direction of arrow Y in Figure 11 (b) by an angle smaller than angle B, the detection signal land 4103 and the operation signal land 4104, which have dimension D, respectively come into contact with the detection signal terminal 1853 and the operation signal terminal 1854 of the terminal 185, and become electrically connected.

[0082] 11(c), when the operating device 100 rotates by an angle B in the direction of the arrow Y and the protruding portion 125a reaches the abutting portion 184, the operating device 100 reaches the mounting position. At this time, the power land 4102 having a dimension E contacts the power terminal 1852 of the terminal 185 and is electrically connected.

[0083] In this embodiment as well, the operating device 100 is physically prevented from coming off in the direction opposite to the insertion direction by the projections 125a, 125b being engaged and held by the rail portions 183a, 183b.

[0084] As described above, in this embodiment, in the process of mounting the operation device 100, after the GND land 4101 is connected to the GND terminal 1851, the detection signal land 4103 and the operation signal land 4104 are connected to the detection signal terminal 1853 and the operation signal terminal 1854. And finally, the power supply land 4102 is connected to the power supply terminal 1852. This enables a stable signal connection, and prevents problems in the communication connection with the imaging device 1 when the operation device 100 is mounted.

[0085] The above embodiment includes the following configurations.

[0086] (Configuration 1) An accessory that is detachably attached to a mounting portion provided on an electronic device, an engagement portion that engages and holds the accessory with the mounting portion when the accessory, which is disposed at a first position with respect to the mounting portion, is rotated in a first direction to a second position; a plurality of contacts arranged in the first direction so as to come into contact with corresponding terminals among a plurality of terminals arranged in the first direction on the mounting portion at the second position; An accessory, characterized in that an angular spacing between adjacent ones of the plurality of contacts is greater than a rotation angle of the accessory from the first position to the second position. (Configuration 2) the plurality of contacts include a first contact that contacts a first terminal for ground among the plurality of terminals, a second contact that contacts a second terminal for power supply, and a third contact that contacts a third terminal for signals; In the first position, the first, second and third contacts do not contact any of the plurality of terminals; The accessory of configuration 1, characterized in that rotation of the accessory from the first position to the second position causes the first, second and third contacts to simultaneously contact the first, second and third terminals, respectively. (Configuration 3) the plurality of contacts include a first contact that contacts a first terminal for ground among the plurality of terminals, a second contact that contacts a second terminal for power supply, and a third contact that contacts a third terminal for signals; In the first position, the first, second and third contacts do not contact any of the plurality of terminals; The accessory of configuration 1, characterized in that rotation of the accessory from the first position to the second position first causes the first contact to contact the first terminal, then the third contact to contact the third terminal, and then the second contact to contact the second terminal. (Configuration 4) The accessory described in configuration 3, characterized in that in the first direction, the length of the first contact is longer than the length of the third contact, and the length of the third contact is longer than the length of the second contact. (Configuration 5) the mounting portion has a first terminal for grounding at a center of the arrangement of the plurality of terminals, the accessory has a first contact for grounding at a center of the arrangement of the plurality of contacts, the plurality of contacts include a second contact that contacts a second power supply terminal among the plurality of terminals, and a third contact that contacts a third signal terminal; in the first position, the first contact contacts the first terminal, and the second and third contacts do not contact any of the plurality of terminals; The accessory of configuration 1, characterized in that rotation of the accessory from the first position to the second position first causes the third contact to contact the third terminal and then the second contact to contact the second terminal. (Configuration 6) The accessory described in configuration 5, characterized in that in the first direction, the length of the third contact is longer than the length of the second contact. (Configuration 7) the plurality of contacts includes two or more signal contacts; The accessory includes: a dial member that can be rotated in the first direction, 7. The accessory according to any one of configurations 1 to 6, wherein a signal corresponding to the rotational position of the dial member is output from the signal contact. (Configuration 8) A mounting portion to which the accessory is detachably mounted; a holding portion that engages and holds the accessory with the mounting portion by rotating the accessory, which is disposed at a first position with respect to the mounting portion, in a first direction to a second position; a plurality of terminals arranged in the first direction so as to contact corresponding ones of the plurality of contacts at the second position; An electronic device, characterized in that an angular spacing between adjacent terminals among the plurality of terminals is greater than a rotation angle of the accessory from the first position to the second position. (Configuration 9) the plurality of terminals include a first terminal in contact with a first ground contact among the plurality of contacts, a second terminal in contact with a second power contact, and a third terminal in contact with a third signal contact; when the accessory is in the first position, the first, second and third terminals do not contact any of the plurality of contacts; The electronic device of configuration 8, wherein rotation of the accessory from the first position to the second position causes the first, second and third terminals to simultaneously contact the first, second and third contacts, respectively. (Configuration 10) the plurality of terminals include a first terminal in contact with a first ground contact among the plurality of contacts, a second terminal in contact with a second power contact, and a third terminal in contact with a third signal contact; when the accessory is in the first position, the first, second and third terminals do not contact any of the plurality of contacts; The electronic device of configuration 8, characterized in that rotation of the accessory from the first position to the second position first causes the first terminal to contact the first contact, then the third terminal to contact the third contact, and then the second terminal to contact the second contact. (Configuration 11) the mounting portion has a first terminal for grounding at a center of the arrangement of the plurality of terminals, the accessory has a first contact for grounding at a center of the arrangement of the plurality of contacts, the plurality of terminals include a second terminal that contacts a second power contact among the plurality of contacts, and a third terminal that contacts a third signal contact; when the accessory is in the first position, the first terminal contacts the first contact, and the second and third terminals do not contact any of the plurality of contacts; The electronic device described in configuration 8, characterized in that rotation of the accessory from the first position to the second position first causes the third terminal to contact the third contact and then the second terminal to contact the second contact.

[0087] The embodiments described above are merely representative examples, and various modifications and alterations are possible for each embodiment when implementing the present invention. [Explanation of symbols]

[0088] 1. Imaging device 100 Operating device 125 Convex 181 Recess 182a,182b opening 183a, 183b Rail section 185 Communication terminal 190 Mounting part 210,310,410 Contact points

Claims

1. An accessory that is detachably attached to a mounting portion provided on an electronic device, an engaging portion that engages and holds the accessory with the mounting portion when the accessory, which is disposed at a first position with respect to the mounting portion, is rotated in a first direction to a second position; a plurality of contacts arranged in the first direction so as to come into contact with corresponding terminals among a plurality of terminals arranged in the first direction on the mounting portion at the second position; An accessory, characterized in that an angular interval between adjacent ones of the plurality of contacts is greater than a rotation angle of the accessory from the first position to the second position.

2. the plurality of contacts include a first contact in contact with a first terminal for ground among the plurality of terminals, a second contact in contact with a second terminal for power supply, and a third contact in contact with a third terminal for signals; in the first position, the first, second and third contacts do not contact any of the plurality of terminals; 2. The accessory of claim 1, wherein rotation of the accessory from the first position to the second position causes the first, second and third contacts to simultaneously contact the first, second and third terminals, respectively.

3. the plurality of contacts include a first contact in contact with a first terminal for ground among the plurality of terminals, a second contact in contact with a second terminal for power supply, and a third contact in contact with a third terminal for signals; in the first position, the first, second and third contacts do not contact any of the plurality of terminals; 2. The accessory of claim 1, wherein rotation of the accessory from the first position to the second position first causes the first contact to contact the first terminal, then the third contact to contact the third terminal, and then the second contact to contact the second terminal.

4. 4. The accessory of claim 3, wherein in the first direction, the length of the first contact is longer than the length of the third contact, and the length of the third contact is longer than the length of the second contact.

5. the mounting portion has a first terminal for grounding at a center of the arrangement of the plurality of terminals, the accessory has a first contact for grounding at a center of the arrangement of the plurality of contacts, the plurality of contacts include a second contact that contacts a second power supply terminal among the plurality of terminals, and a third contact that contacts a third signal terminal; in the first position, the first contact contacts the first terminal, and the second and third contacts do not contact any of the plurality of terminals; 2. The accessory of claim 1, wherein rotation of the accessory from the first position to the second position first causes the third contact to contact the third terminal and then causes the second contact to contact the second terminal.

6. The accessory of claim 5, wherein the third contact has a length greater than a length of the second contact in the first direction.

7. the plurality of contacts includes two or more signal contacts; The accessory includes: a dial member that can be rotated in the first direction, 7. The accessory according to claim 1, wherein a signal corresponding to a rotational position of the dial member is output from the signal contact.

8. A mounting section to which the accessory is detachably mounted; a holding portion that engages and holds the accessory with the mounting portion by rotating the accessory disposed at a first position with respect to the mounting portion in a first direction to a second position; a plurality of terminals arranged in the first direction so as to contact corresponding ones of the plurality of contacts at the second position; An electronic device, characterized in that an angular spacing between adjacent terminals among the plurality of terminals is greater than a rotation angle of the accessory from the first position to the second position.

9. the plurality of terminals include a first terminal in contact with a first ground contact among the plurality of contacts, a second terminal in contact with a second power contact, and a third terminal in contact with a third signal contact; when the accessory is in the first position, the first, second and third terminals do not contact any of the plurality of contacts; 9. The electronic device of claim 8, wherein rotation of the accessory from the first position to the second position causes the first, second and third terminals to simultaneously contact the first, second and third contacts, respectively.

10. the plurality of terminals include a first terminal in contact with a first ground contact among the plurality of contacts, a second terminal in contact with a second power contact, and a third terminal in contact with a third signal contact; when the accessory is in the first position, the first, second and third terminals do not contact any of the plurality of contacts; 9. The electronic device of claim 8, wherein rotation of the accessory from the first position to the second position first causes the first terminal to contact the first contact, then the third terminal to contact the third contact, and then the second terminal to contact the second contact.

11. the mounting portion has a first terminal for grounding at a center of the arrangement of the plurality of terminals, the accessory has a first contact for grounding at a center of the arrangement of the plurality of contacts, the plurality of terminals include a second terminal that contacts a second power contact among the plurality of contacts, and a third terminal that contacts a third signal contact; when the accessory is in the first position, the first terminal contacts the first contact, and the second and third terminals do not contact any of the plurality of contacts; 9. The electronic device of claim 8, wherein rotation of the accessory from the first position to the second position first causes the third terminal to contact the third contact and then causes the second terminal to contact the second contact.

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