JP4478867B2 - Accessory shoe device, electronic equipment and accessories - Google Patents

Description

  The present invention relates to an accessory shoe device, an electronic device, and an accessory.

In many cases, an imaging device (hereinafter referred to as an electronic device) such as a digital camera or a video camera is equipped with an accessory such as a flashlight for emitting auxiliary light or a microphone for recording sound. A connector is provided.
Such an electronic device-side connector of the conventional electronic device includes a flat terminal surface, a holding portion connected to the terminal surface, and a contact piece for power supply or signal exchange provided on the terminal surface. ing. The accessory attached to the electronic device is provided with an accessory-side connector to be attached to the electronic device-side connector, the accessory-side connector being attached to the terminal surface of the electronic device-side connector, and the attachment portion And a contact piece for power supply or signal exchange provided. The attachment of the accessory side connector to the electronic device side connector is performed by sliding the attachment side of the electronic device side connector linearly along the terminal surface while the attachment portion of the accessory side connector is in contact with the terminal surface of the electronic device side connector. This is done by holding the holding part of the side connector. And it is comprised so that each contact piece of an accessory may be electrically connected to each contact piece of an electronic device side connector in the state in which the attachment part was hold | maintained at the holding | maintenance part (for example, refer patent document 1 and patent document 2). ). The electronic device side connector and the accessory side connector are collectively referred to as an accessory shoe device.
JP-A-9-163200 Japanese Patent Laid-Open No. 9-166816

In such a conventional technique, since the accessory side connector is linearly slid with respect to the electronic device side connector, it is necessary to secure a space about twice the contour of the accessory side connector mounting portion around the electronic device side connector. Therefore, there is a disadvantage in reducing the size of the electronic device or improving the design of the electronic device.
In addition, for the convenience of sliding the accessory side connector linearly with respect to the electronic device side connector, the arrangement of each contact piece is limited, and there is a limit in miniaturizing the accessory side connector and the electronic device side connector. There was also a disadvantage in dealing with the miniaturization of accessories. In addition, there is a limit in increasing the number of contact pieces due to the fact that the accessory side connector is slid linearly with respect to the electronic device side connector, and various signals that increase in response to diversification of accessories are connected. But there was a disadvantage.
In addition, when attempting to reduce the size or increase the number of contact pieces within a limited terminal surface, keep in mind the stabilization of the operation of the electronic device and the accessory when the electronic device side connector and the accessory side connector are attached and detached. I must.
The present invention has been made in view of such circumstances, and an object of the present invention is to reduce the size and design of the electronic device and the accessory while stabilizing the operation of the electronic device and the accessory. An object is to provide an accessory shoe device, an electronic device, and an accessory that can be improved and can cope with an increase in contact pieces.

In order to achieve the above object, an accessory shoe device of the present invention includes an electronic device-side connector provided on an electronic device and having a plurality of electronic device-side contact pieces, and a plurality of accessories provided on the accessory attached to the electronic device. An accessory shoe device including an accessory side connector having a side contact piece, wherein the electronic device side connector extends in a direction intersecting a first virtual axis, and the plurality of electronic device side contact pieces are The electronic device side terminal surface provided so that it may be located on the circumference centering on a 1st virtual axis, At least one of the electronic device side contact pieces of the said electronic device side connector is the said accessory Including an identification signal connecting piece for supplying an identification signal for identifying the accessory to the accessory, wherein the accessory-side connector intersects the second virtual axis The accessory side contact piece of the accessory side connector has an accessory side terminal surface provided so that the plurality of accessory side contact pieces are located on a circumference centered on the second virtual axis. At least one of them includes an identification signal contact piece to which the identification signal is supplied, an engagement portion is provided in the vicinity of the accessory side terminal surface, and in the vicinity of the electronic device side terminal surface, The first virtual axis is matched with the second virtual axis so that the accessory-side terminal surface of the accessory-side connector of the accessory matches the electronic device-side terminal surface, and can be engaged with the engagement portion. A guide portion that engages with the engaging portion by rotation of the accessory-side connector in a circumferential direction centering around the accessory-side connector, and guides the rotation of the accessory-side connector. And the plurality of accessory side contact pieces, the first virtual axis and the second virtual axis are matched, the accessory side terminal surface of the accessory side connector is aligned with the electronic device side terminal surface, and the circle is centered on the virtual axis By rotating the accessory-side connector in the first direction in the circumferential direction, the two come into contact with each other, and the accessory in a second direction that is opposite to the first direction in the circumferential direction about the virtual axis. The accessory-side connector identification signal contact piece and the electronic device-side connector identification signal contact piece are arranged in the second direction with respect to the accessory-side connector. When the is rotated, it is configured so as to be separated earliest among all accessory side contact pieces and all electronic device side contact pieces.
The electronic device of the present invention is an electronic device including an electronic device-side connector having a plurality of electronic device-side contact pieces, and the electronic device-side connector is an electronic device extending in a direction intersecting the virtual axis. The electronic device side terminal surface has a contact region where the electronic device side contact piece is provided, and a non-contact piece region where the electronic device side contact piece is not provided. Provided with a phase shift around the virtual axis, in the vicinity of the electronic device side terminal surface, align the terminal surface of the mating connector with the electronic device side terminal surface, and in the circumferential direction around the virtual axis A guide portion is provided for guiding the mating connector so that the mating connector is rotated and the electronic device side contact piece and the mating connector contact piece are electrically connected to each other. At least one of the other An identification signal contact piece for supplying an identification signal for separation to the other party, and the identification signal contact piece together with other electronic device side contact pieces on the circumference of the same radius in the contact piece region It is arranged at intervals in the circumferential direction, and is arranged at the end in the circumferential direction among these electronic device side contact pieces, and the other party when the counterpart connector is rotated in the circumferential direction The last contact with the identification signal contact piece.
The accessory of the present invention is an accessory that includes an accessory-side connector having a plurality of accessory-side contact pieces and is coupled to the electronic device-side connector of the electronic device, and the accessory-side connector intersects the virtual axis. An accessory-side terminal surface provided with the accessory-side contact piece, and is engaged with a guide portion of the electronic-device-side connector at a location near the accessory-side terminal surface of the accessory-side connector. The accessory side terminal surface is aligned with the terminal surface of the side connector, and the accessory side connector is rotated in a first direction in a circumferential direction around the virtual axis, so that the accessory side contact piece and the electronic device side connector contact piece And the accessory side in a second direction opposite to the first direction in the circumferential direction. An engagement portion is provided that is guided by the guide portion so that the accessory is rotated and the accessory side contact piece and the contact piece of the electronic device side connector are separated from each other, and at least of the accessory side contact pieces of the accessory side connector One includes an identification signal contact piece that receives an identification signal for identifying the accessory, and the identification signal contact piece is included in the accessory side terminal surface of all the accessory side contact pieces. It is provided at the endmost portion in the first direction, and when the accessory side connector is rotated in the first direction, it contacts the identification signal contact piece of the electronic device side connector last.

Therefore, according to the accessory shoe device, the electronic device, and the accessory of the present invention, when the accessory side connector is removed from the electronic device side connector, the identification signal contact piece of the electronic device side contact piece and the identification signal of the accessory side contact piece are first Since the connection with the service piece is released, the detection of the identification signal by the electronic device is stopped, and the power supply to the accessory and the transmission / reception of the signal can be immediately stopped. For this reason, even if the electronic device side contact piece and the accessory side contact piece that do not correspond to each other come into contact with each other, malfunction of both the electronic device and the accessory can be prevented, and the operation of the electronic device and the accessory can be stabilized.
Moreover, since the contact piece of both connectors is conducted by rotating the accessory side connector in the circumferential direction around the virtual axis with respect to the electronic device side connector, the accessory side connector is placed around the electronic device side connector. It is not necessary to secure a large space for mounting, which is extremely advantageous for downsizing electronic devices and accessories, or for improving the design of electronic devices and accessories, and has limited space. A large number of contact pieces can be arranged on the cable, which is advantageous in connecting various signals that increase in response to diversification of accessories.

  While stabilizing the operation of the electronic device and the accessory when the electronic device side connector and the accessory side connector are attached and detached, the electronic device and the accessory can be reduced in size and improved in design. For the purpose of dealing with the increase in the number of signals exchanged between the first and second connectors, the electronic device side connector extends in a direction intersecting the first virtual axis, An electronic device-side terminal surface located in the circumferential direction around the virtual axis is provided, and the accessory-side connector extends in a direction intersecting the second virtual axis, and has a contact piece for power supply or signal transmission / reception By providing an accessory side terminal surface located on the circumference centering on the second virtual axis, and rotating the accessory side connector in the circumferential direction centering on these virtual axes When the accessory side connector and the electronic device side connector are electrically connected, and the accessory side connector is rotated in the second direction to remove the accessory side connector from the electronic device side connector, the accessory side connector The identification signal contact piece of the side connector and the identification signal contact piece of the electronic device side connector are realized by being configured to be the earliest among all accessory side contact pieces and all electronic device side contact pieces. .

Next, Embodiment 1 of the present invention will be described with reference to the drawings.
1 is a perspective view of an electronic device according to a first embodiment as viewed from the front, FIG. 2 is a perspective view of an electronic device-side connector provided in the electronic device, FIG. 3 is an exploded perspective view of the electronic device-side connector, and FIG. FIG. 5 is a perspective view of an accessory-side connector provided in the accessory, FIG. 6 is a cross-sectional view showing a state where the electronic device-side connector and the accessory-side connector are coupled, and FIG. 7 is a contact piece of the electronic device-side connector. It is explanatory drawing which shows the positional relationship with the contact piece of an accessory side connector.

First, an electronic device will be described.
As shown in FIG. 1, in this embodiment, an electronic device 100 is a video camera, and has a rectangular plate-like case 102 constituting an exterior. In the present specification, left and right refer to a state in which the electronic apparatus 100 is viewed from the front, the subject side is referred to as the front in the optical axis direction of the optical system, and the imaging element side is referred to as the rear.
A lens barrel 106 incorporating a photographing optical system 104 is provided on the front upper portion of the case 102 so as to face forward.
Inside the case 102 is an imaging device that captures a subject image guided by the imaging optical system 104, a recording / reproducing unit that records / reproduces still image and moving image data of the subject image captured by the imaging device on a recording medium, and the like. Is housed.
An electronic viewfinder 108 for visually recognizing a subject image picked up by the image pickup device is provided on the upper rear surface of the case 102.
On the right side surface of the case 102, a display 110 for displaying a subject image captured by the image sensor is provided to be openable and closable.
An operation switch (not shown) such as a shooting start / stop switch and a setting switch (not shown) for performing various settings are provided on the upper rear portion and the left side surface of the case 102.
A concave portion 112 having a rectangular shape in a plan view is provided in the front upper portion of the case 102, and a lid 114 is detachably provided in the concave portion 112. The electronic device side connector 10 is disposed inside the recess 112. When the electronic device connector 10 is not in use, the electronic device side connector 10 is covered to the outside by attaching the lid 114 to the recess 112. When the electronic device connector 10 is used, the electronic device side connector 10 is exposed to the outside by removing the lid 114 from the recess 112.
An accessory 200 described later is attached to the electronic device 100 via the electronic device-side connector 10.

As shown in FIGS. 2 and 3, the electronic device-side connector 10 extends in a direction intersecting the first virtual axis 1002 (in the present embodiment, extends in a direction orthogonal), and a plurality of electronic devices. An electronic device side terminal surface 1006 provided so that the side contact piece 1004 is located on a circumference centered on the first virtual axis 1002 and a terminal of a mating connector provided in the vicinity of the electronic device side terminal surface 1006 And a guide portion that rotates the mating connector in a circumferential direction about the first virtual axis 1002 with the surface aligned with the electronic device side terminal surface 1006.
A plurality of electronic device side contact pieces 1004 and a plurality of contact pieces of the mating connector are arranged in a circumferential direction around the first virtual axis 1002 with the terminal surface of the mating connector aligned with the electronic device side terminal surface 1006. By rotating the mating connector in the direction 1, the two come into contact with each other, and the mating connector is in a second direction that is opposite to the first direction in the circumferential direction about the first virtual axis 1002. The two are separated by rotating.
In this embodiment, the plate member 12 is attached to the bottom surface of the recess 112, the terminal plate 14 is attached to the plate member 12, and the cover 16 is disposed on the terminal plate 14 via the shaft member 18.
The plate member 12 includes a rectangular plate-shaped bottom plate 1202, two side plates 1204 erected from a pair of side portions of the bottom plate 1202, and two upper plates 1206 bent in directions close to each other from the upper edge of each side plate 1204. (Corresponding to the plate member in the claims).
The bottom plate 1202 is provided with a rectangular opening 1208.
An inner peripheral surface 1210 extending in an arc shape around the first imaginary axis 1002 is provided at a location where the two upper plates 1206 face each other, and the extending direction of the inner peripheral surface 1210 on the lower surface of each upper plate 1206 One end of each is provided with a convex portion 1212 projecting downward.

The terminal plate 14 includes a lower plate 1402 fitted in the opening 1208 and an upper plate 1404 provided on the lower plate 1402 and positioned on the bottom plate 1202 in a state where the lower plate 1402 is fitted in the opening 1208. And a hole 1406 is formed so as to pass through the center of the upper plate 1404 and the lower plate 1402.
In the present embodiment, the central axis of the hole 1406 is a first virtual axis 1002, the upper surface of the upper plate 1402 is an electronic device side terminal surface 1006, and a plurality of electronic devices side terminal surface 1006 are arranged on the electronic device side terminal surface 1006. An electronic device side contact piece 1004 is provided.
In the present embodiment, a contact region A1 in which an electronic device side contact piece 1004 is provided in a fan-shaped region around the first virtual axis 1002 on the electronic device side terminal surface 1006, and a first virtual axis Two non-contact area A2 in which the electronic device side contact piece 1004 is not provided in the fan-shaped area centering on 1002 are provided alternately two by two around the first virtual axis 1002. In the present embodiment, the contact piece areas A1 and the non-contact piece areas A2 are alternately provided with an interval of 90 degrees.
In this embodiment, the plurality of electronic device side contact pieces 1004 include one power supply contact piece, one reference potential contact piece, two identification signal contact pieces, and 10 signal input pieces. There are a total of 14 output contacts.
More specifically, as shown in FIG. 7, one of the two contact region A1 has a single contact region A1 on the circumference of the smallest radius R1 around the first virtual axis 1002. The reference potential contact piece GND extends over the entire contact area A1 in the circumferential direction of the radius R1.
The one contact region A1 includes a signal input / output contact MicRR and a signal input / output contact MicFR on a circumference having a radius R2 larger than the radius R1 around the first virtual axis 1002. And three electronic device side contact pieces 1004 with the identification signal contact piece ID2 are provided in this order along the first direction (clockwise direction on the paper surface) at intervals in the circumferential direction of the radius R2. Yes.
The one contact region A1 includes a signal input / output contact MicRL and a signal input / output contact MicFL on a circumference having a radius R3 larger than the radius R2 around the first virtual axis 1002. The three electronic device side contact pieces 1004 with the identification signal contact piece ID1 are provided in this order along the first direction at intervals in the circumferential direction of the radius R3.
Therefore, the identification signal contact pieces ID2 and ID1 are located at the end in the first direction among all the electronic device side contact pieces 1004 provided in one contact piece region A1.

Further, in the other piece region A1 of the two piece regions A1, a single power supply contact piece V is arranged on the circumference of the radius R1 in the circumferential direction of the radius R1. It extends over the whole area.
In the other contact area A1, there are three electrons of a signal input / output contact Strobo, a signal input / output contact USB +, and a signal input / output contact S on the circumference of the radius R2. Equipment side contact pieces 1004 are provided in this order along the first direction at intervals in the circumferential direction of radius R2.
The other contact area A1 has a signal input / output contact MicGND, a signal input / output contact USB-, and an unused signal input / output contact NC on the circumference of the radius R3. Are provided in this order along the first direction at intervals in the circumferential direction of radius R3.
Therefore, the signal input / output contact piece S and the signal input / output contact piece NC are located at the extreme end in the first direction among all the electronic device side contact pieces 1004 provided in the other contact piece region A1. ing.

  In FIG. 3, reference numeral 1408 denotes a lead pin connected to the electronic device side contact piece 1004 and protruding below the lower plate 1402, and the lead pin 1408 is connected to a flexible board (not shown) by soldering or the like. In this embodiment, the electronic device side contact piece 1004 and the lead pin 1408 are made of a material obtained by plating copper and an alloy of nickel and gold.

The shaft member 18 is inserted into the hole 1406 and is rotatably supported by the hole 1406, a columnar intermediate portion 1804 provided at the upper end of the shaft portion 1802 and positioned on the electronic device side terminal surface 1006, The intermediate portion 1804 and the upper portion 1806 protrude from the electronic device side terminal surface 1006. The upper portion 1806 includes a cylindrical portion 1808 having an outer diameter larger than that of the intermediate portion 1804 and a protruding portion 1810 that protrudes from a side portion of the cylindrical portion 1808.
The cover 16 is disposed so that the intermediate portion 1804 is fitted and fixed in the central hole 1602 so as to rotate integrally with the shaft member 18 on the upper plate 1404, and the cover 16 has two fan shapes covering the contact area A1. Part 1604. These fan-shaped portions 1604 have a first position that covers the contact area A1 and exposes the non-contact area A2 by rotation of the cover 16, and a second position that exposes the contact area A1 and covers the non-contact area A2. It is provided to be in position.
In this embodiment, the cover 16 is made of polycarbonate, and when the accessory 200 is not used, the fan-shaped portion 1604 of the cover 16 is located at the first position to protect the electronic device side contact piece 1004.

Next, the accessory 200 will be described.
As shown in FIG. 4, in this embodiment, the accessory 200 is a small camera having a small outer shape as compared with the electronic device 100, and this small camera has a direction different from that of the electronic device 100 at the same time as photographing the electronic device 100, for example. The same subject as that of the electronic device 100 or a different subject is photographed at a photographing magnification different from that of the electronic device 100.
The accessory 200 includes a rectangular plate-shaped case 202 that constitutes an exterior. A lens barrel 206 in which a photographing optical system 204 is incorporated is provided on the front surface of the case 202 so as to face the front.
In the case 202, there are an image sensor that captures a subject image guided by the imaging optical system 204, a signal processor that processes an image signal generated by the image sensor and outputs the processed image signal to the accessory-side connector 20 described later. Contained.
On the lower surface of the case 202, a columnar connecting portion 208 that protrudes downward is provided integrally with the case 202. The accessory-side connector 20 is rotatably connected to the lower portion of the connecting portion 208 around the central axis of the connecting portion 208. In the figure, reference numeral 210 denotes a fixing screw for fixing the accessory side connector 20 to the connecting portion 208.

As shown in FIGS. 4 and 5, the accessory-side connector 20 extends in a direction intersecting the second virtual axis 2002 (extends in a direction orthogonal to the present embodiment) and includes a plurality of accessory side contacts. Accessory side terminal surface 2006 provided so that piece 2004 is located on the circumference centering on 2nd virtual axis 2002, and the guide part of electronic equipment side connector 10 provided near accessory side terminal surface 2006 The accessory side terminal surface 2006 is engaged with the electronic device side terminal surface 1006 so that the first virtual axis 1002 and the second virtual axis 2002 coincide with each other, and the accessory side extends in the circumferential direction around these virtual axes 1002 and 2002. The above-mentioned plan is such that the connector 20 is rotated to electrically connect the accessory side contact piece 2004 and the electronic device side contact piece 1004 of the electronic device side connector 10. And a engaging portion that is guided by the parts.
The plurality of accessory side contact pieces 2004 align the first virtual axis 1002 and the second virtual axis 2002 by aligning the accessory side terminal surface 2006 with the electronic device side terminal surface 1006, and the first and second virtual axes 1002, 2002. The accessory-side connector 20 is rotated in the first direction in the circumferential direction centered at the center, and the plurality of electronic device-side contact pieces 1004 are brought into contact with each other, and the circumference around the first and second virtual axes 1002 and 2002 is centered. It is configured that both contact pieces are separated by rotating the accessory-side connector 20 in a second direction that is opposite to the first direction.
In the present embodiment, the accessory-side connector 20 has a columnar shaft-shaped member 22 connected to the lower portion of the connecting portion 208, and the tightening ring 24 is attached to the male screw 2202 formed on the lower outer periphery of the shaft-shaped member 22. Are screwed together. A shaft portion 26 having a diameter smaller than that of the shaft-shaped member 22 is provided at the lower end of the shaft-shaped member 22, and a terminal plate 28 is provided on a front end surface (lower end surface) 2602 of the shaft portion 26.
A hole portion 2604 is formed at the center of the tip end surface 2602 of the shaft portion 26 so as to engage with the upper portion 1806 of the shaft member 18. In this embodiment, the center axis of the hole portion 2604 is the second virtual axis. 2002. An outer peripheral surface 2606 centering on the second virtual shaft 2002 is formed at a position of the shaft-shaped member 22 away from the distal end surface 2602 of the shaft portion 26, and the outer peripheral surface 2606 is the inner periphery of the electronic device side connector 10. It is provided so as to be in contact with the surface 1210 and guided in the circumferential direction of the second virtual axis 2002.
The terminal plate 28 has a fan shape and is arranged at two positions 180 degrees symmetrical about the second virtual axis 2002, and the two terminal plates are in a state where the upper portion 1806 of the shaft member 18 is engaged with the hole 2604. 28 is configured to face the electronic device side terminal surface 1006 through a space between the two covers 16.
In this embodiment, the lower surfaces of the two terminal plates 28 are the accessory-side terminal surfaces 2006, respectively, and a plurality of accessory-side contact pieces 2004 are provided on the two accessory-side terminal surfaces 2006, respectively.
In the present embodiment, the accessory side contact piece 2004 is configured by a plurality of connection pins 2802 provided on the circumference of different radii around the second virtual axis 2002 on the accessory side terminal surface 2006.
Each connection pin 2802 protrudes downward from the accessory-side terminal surface 2006, and each connection pin 2802 is constantly urged in the protruding direction.
In this embodiment, the connection pin 2802 is made of a material obtained by plating a copper alloy with nickel and gold.

In this embodiment, the plurality of accessory side contact pieces 2004 include one power supply contact piece, one reference potential contact piece, two identification signal contact pieces, and 10 signal input / outputs. There are a total of 14 with the contact piece.
More specifically, as shown in FIG. 7, one accessory-side terminal surface 2006 out of two accessory-side terminal surfaces 2006 has a circumference of the same radius R11 as the radius R1 around the second virtual axis 2002. A single reference potential contact GND ′ is provided thereon. The reference potential contact GND is provided at the end of the accessory side terminal surface 2006 in the first direction.
The one accessory-side terminal surface 2006 has a signal input / output contact MicRR ′ and a signal input / output contact on the circumference of R12 having the same radius as the radius R2 with the second virtual axis 2002 as the center. The three accessory side contact pieces 2004 of the contact piece MicFR ′ and the identification signal contact piece ID2 ′ are arranged in this order along the first direction (clockwise direction on the paper surface) at intervals in the circumferential direction of the radius R12. Is provided.
The one accessory-side terminal surface 2006 has a signal input / output contact MicRL ′ and a signal input / output contact on a circumference of the same radius R13 as the radius R3 with the second virtual axis 2002 as the center. Three accessory side contact pieces 2004 of the piece MicFL ′ and the identification signal contact piece ID1 ′ are provided in this order along the first direction at intervals in the circumferential direction of the radius R13.
Therefore, the identification signal contact ID2 ′ and the identification signal contact ID1 ′ are provided at one end of the accessory-side terminal surface 2006 in the first direction.

The other accessory side terminal surface 2006 of the two accessory side terminal surfaces 2006 is provided with a single power supply contact piece V ′ on the circumference of the radius R11. The power supply contact piece V ′ is provided at an end of the other accessory side terminal surface 2006 in the second direction.
On the other accessory side terminal surface 2006, on the circumference of the radius R12, a signal input / output contact Strobo ', a signal input / output contact USB +', and a signal input / output contact S ' The three accessory side contact pieces 2004 are provided in this order along the first direction at intervals in the circumferential direction of the radius R12.
The other accessory side terminal surface 2006 has a signal input / output contact MicGND ', a signal input / output contact USB-', and an unused signal input / output contact on the circumference of the radius R13. Three accessory side contact pieces 2004 with the contact piece NC ′ are provided in this order along the first direction at intervals in the circumferential direction of the radius R13.
Therefore, the signal input / output contact piece S ′ and the signal input / output contact piece NC ′ are provided at the end portion in the first direction on the other accessory-side terminal surface 2006.
Further, the signal input / output contact piece Strobo ′ is provided at the end portion in the second direction on the other accessory-side terminal surface 2006.

As shown in FIG. 6, the outer edge portion 2804 of each terminal plate 28 is located on the outer side of the outer periphery of the shaft portion 26 and on the inner side of the outer periphery of the shaft-shaped member 22. The outer edge portions 2804 of these terminal plates 28 are located below the lower surfaces of the pair of upper plates 1206 in a state where the upper portion 1806 of the shaft member 18 is engaged with the hole portion 2604, and the accessory-side connector 20 is connected to the cover 16. In addition, by rotating around the first virtual axis 1002 and the second virtual axis 2002, the outer edge portion 2804 is positioned below the pair of upper plates 1206 and a position between the pair of upper plates 1206. It is provided to become.
Further, the edge portion 2806 located on one side in the circumferential direction of the terminal plate 28 engages with the convex portion 1212 (corresponding to a stopper in the claims) of the electronic device-side connector 10, whereby the first side of the accessory-side connector 20. The rotation in the circumferential direction around the virtual axis 1002 and the second virtual axis 2002 is stopped at a rotation angle that electrically connects the connection pin 2802 and the electronic device side contact piece 1004 of the electronic device side connector 10. It is configured.
As shown in FIG. 6, the tightening ring 24 is in a state where the upper portion 1806 of the shaft member 18 is engaged with the hole portion 2604 and the outer edge portion 2804 of each terminal plate 28 faces the lower side of the pair of upper plates 1206. The pair of upper plates 1206 is sandwiched and fixed between the tightening ring 24 and each terminal plate 28 by being rotated so as to move downward. That is, the accessory side connector 20 is fixed to the electronic device side connector 10 by the tightening ring 24, and the accessory 200 is attached to the electronic device 100.
In this embodiment, the fastening ring 24, each terminal plate 28, and a pair of upper plates 1206 electrically connect the electronic device side contact piece 1004 of the electronic device side connector 10 and the connection pin 2802 of the accessory side connector 20. Fixing means for detachably fixing both connectors in the state is provided.
In this embodiment, the outer peripheral surface 2606 of the shaft portion 26 of the accessory-side connector 20 is in contact with each inner peripheral surface 1210 of the electronic device-side connector 10, and the upper portion 1806 of the shaft member 18 is engaged with the hole portion 2604. As a result, the accessory-side connector 20, in which the first virtual axis 1002 and the second virtual axis 2002 are matched, has its accessory-side terminal surface 2006 aligned with the electronic device-side terminal surface 1006 of the electronic device-side connector 10. In this state, when the accessory-side connector 20 is rotated in the circumferential direction around the first virtual axis 1002 and the second virtual axis 2002, the electronic device side contact piece 1004 and the connection pin 2802 are electrically connected. The accessory-side connector 20 is guided so as to be electrically connected.
Accordingly, the guide portions of the electronic device-side connector 10 are configured by the inner peripheral surfaces 1210 of the electronic device-side connector 10, and the guide portions of the electronic device-side connector 10 are also configured by the shaft member 18.
Moreover, the said engaging part of the accessory side connector 20 is comprised by the outer peripheral surface 2606 of the axial part 26 of the accessory side connector 20, and the said engaging part of the accessory side connector 20 is comprised also by the hole 2604. FIG.
Further, the electronic device side connector 10 and the accessory side connector 20 constitute an accessory shoe device.

Next, functions of the electronic device side contact piece 1004 and the accessory side contact piece 2004 described above will be described.
The power supply contact piece V of the electronic device side connector 10 and the power supply contact piece V ′ of the accessory side connector 20 are connected to each other to supply the accessory 200 with the power supply of the electronic device 100. .
The reference potential contact GND of the electronic device-side connector 10 and the reference potential contact GND ′ of the accessory-side connector 20 are connected to each other so that the reference potential of the power source of the electronic device 100 and each electric signal described below are connected. This is for supplying a reference potential to the accessory 200. In this embodiment, the reference potential is at the ground level.

The input / output signal contacts MicRR, MicFR, MicRL, MicFL, MicGND of the electronic device side connector 10 and the input / output signal contacts MicRR ′, MicFR ′, MicRL ′, MicFL ′, MicGND ′ of the accessory side connector 20 These are connected to transmit audio signals (electric signals) for four channels from the accessory 200 to the electronic device 100 by being connected to each other.
Specifically, the input / output signal contact MicRR of the electronic device-side connector 10 and the input / output signal contact MicRR ′ of the accessory-side connector 20 are connected to each other so that the audio on the rear side (rear) right channel is connected. Communicate the signal. Similarly, the input / output signal contacts MicFR and MicFR ′ transmit the audio signal of the front (front) right channel when they are connected. The input / output signal contacts MicRL and MicRL ′ are connected to transmit a rear side (rear) left channel audio signal. The input / output signal contacts MicFL and MicFL ′ transmit the audio signal of the front (front) left channel by connecting them. The input / output signal contacts MicGND and MicGND ′ transmit the common ground level of the audio signals of these four channels by connecting them.

The input / output signal contact piece Strobe of the electronic device side connector 10 and the input / output signal contact piece Strobe of the accessory side connector 10 are connected so that a strobe signal (electrical signal) for performing light emission control on the accessory 200 is connected. It is for supplying.
The input / output signal contacts USB + and USB− of the electronic device-side connector 10 and the input / output signal contacts USB + ′ and USB− ′ of the accessory-side connector 20 are connected to each other so that the electronic device 100 and the accessory are connected. This is for transferring various data to and from the terminal 200 by a USB signal (electrical signal). The data includes image data (still images, moving images), audio data, and the like.
The input / output signal contact piece S of the electronic device side connector 10 and the input / output signal contact piece S ′ of the accessory side connector 20 are connected to each other so that various control signals ( For sending and receiving electrical signals). The control signal may be transmitted from the electronic device 100 to the accessory 200, transmitted from the accessory 200 to the electronic device 100, or bidirectional between the electronic device 100 and the accessory 200. It may be transmitted to.
The input / output signal contact NC of the electronic device side connector 10 and the input / output signal contact NC ′ of the accessory side connector 20 are connected to each other so that signals (electrical signals) to be expanded in the future can be transmitted to the electronic device 100. And the accessory 200 are prepared to be exchanged. This extended signal may be transmitted from the electronic device 100 to the accessory 200, transmitted from the accessory 200 to the electronic device 100, or between the electronic device 100 and the accessory 200. May be transmitted in both directions.

The identification signal contacts ID1 and ID2 of the electronic device side connector 10 and the identification signal contacts ID1 ′ and ID2 ′ of the accessory side connector 20 are connected to each other so that the accessory 200 is connected to the accessory 200 from the electronic device 100. This is for supplying an identification signal for identifying the type of each.
Specifically, a resistance means having a first resistance value is connected between one identification signal contact ID1 ′ and reference potential contact GND ′ of the accessory-side connector 20, and the other of the accessory-side connector 20 is connected. A resistance means having a second resistance value is connected between the identification signal contact ID2 ′ and the reference potential contact GND ′. These first and second resistance values are set corresponding to the type of accessory 200.
Therefore, the electronic device 100 has the identification signal contacts ID1 and ID2 of the electronic device side connector 10 and the identification signal contacts ID1 'and ID2' of the accessory side connector 20 connected to each other. The identification signals are supplied to the identification pieces ID1 and ID2 of the connector 10 and the characteristics of the identification signals (for example, transmitted through the identification signal pieces ID1 ′ and ID2 ′ of the accessory-side connector 20 (for example, It is possible to identify the type of the accessory 200 by detecting the resistance value of each of the resistance means based on the current and voltage.
In the present embodiment, the setting conditions of the resistance value of the resistance means connected to the identification contact pieces ID1 ′ and ID2 ′ of the accessory-side connector 20 are as follows.
That is, setting the resistance values of the two resistance means to 0 ohm (short state) is prohibited. One resistance value of the two resistance means is allowed to be set to an infinite resistance value (open state), but both of the two resistance means are set to an infinite resistance value (open state) Ban.
When the identification signal supplied to the identification pieces ID1 and ID2 is transmitted from the accessory 200, the electronic device 100 determines that the accessory 200 is attached and supplies power to the accessory 200 or a signal with the accessory 200. However, when the identification signal supplied to the identification contact pieces ID1 and ID2 is not transmitted from the accessory 200 (does not return), the electronic device 100 determines that the accessory 200 is not attached and is attached to the accessory 200. The power supply and the transmission / reception of the signal with the accessory 200 are not started. In addition, when a state in which at least one of the identification signals supplied to the identification pieces ID1 and ID2 is short-circuited with respect to the reference potential is detected, a power source is used to prevent malfunction and failure of the electronic device 100 and the accessory 200. It is configured to prohibit supply and reception of signals with the accessory 200.
Further, the identification signal supplied from the electronic device 100 is constituted by, for example, a pulse signal generated at a predetermined cycle. In other words, the detection operation of the identification signal by the electronic device 100 is performed at the predetermined cycle. Will be.

Next, the usage method of the electronic device side connector 10 and the accessory side connector 20 is demonstrated.
When attaching the accessory 200 to the electronic device 100, the lid 114 is removed to expose the electronic device side connector 10 to the outside of the case 102, and the accessory side connector 20 is moved linearly toward the electronic device side terminal surface 1006. The outer peripheral surface 2606 of the shaft portion 26 of the accessory-side connector 20 is applied to each inner peripheral surface 1210 of the electronic device-side connector 10, and the hole portion 2604 of the accessory-side connector 20 is attached to the shaft member 18 of the electronic device-side connector 10. Engage. Accordingly, the first virtual axis 1002 and the second virtual axis 2002 are matched, and the accessory-side terminal surface 2006 of the accessory-side connector 20 is aligned with the electronic device-side terminal surface 1006 of the electronic device-side connector 10, and each accessory The tip of the side contact piece 2004 is in contact with the electronic device side terminal surface 1006.
In this state, when the accessory-side connector 20 is rotated in the first direction in the circumferential direction around the first virtual axis 1002 and the second virtual axis 2002, the tip of each accessory-side contact piece 2004 is an electron. The device side terminal surface 1006 and the electronic device side contact surface 1006 of the electronic device side terminal surface 1006 move while being in sliding contact, and the fan-shaped portion 1604 of the cover 16 is rotated together with the terminal plate 28 of the accessory side connector 20 to rotate the first. Rotate from the position toward the second position. When the fan-shaped portion 1604 reaches the second position, the edge portion 2806 of the terminal plate 28 comes into contact with the convex portion 1212 and the position of the accessory-side connector 20 in the rotational direction is positioned. Accordingly, each accessory side contact piece 2004 is electrically connected to each corresponding electronic device side contact piece 1004.
Next, when the tightening ring 24 is rotated, the pair of upper plates 1206 are clamped and fixed between the tightening ring 24 and each terminal plate 28, whereby the accessory-side connector 20 is fixed to the electronic device-side connector 10, and the accessory 200. Is mounted on the electronic device 100.
As a result, it is possible to simultaneously perform shooting with the accessory 200 and shooting with the electronic device 100. The imaging signal generated by the accessory 200 is transmitted as the USB signal from the accessory-side connector 20 to the electronic device 100 via the electronic device-side connector 10, and the electronic device 100 is necessary for the transmitted imaging signal. Perform signal processing.

Here, the change in the contact state of the electronic device side contact piece 1004 and the accessory side contact piece 2004 when the accessory side connector 20 is connected to the electronic device side connector 10 will be described in detail.
FIG. 8 is a state transition diagram illustrating changes in the contact state of the electronic device side contact piece 1004 and the accessory side contact piece 2004.
As shown in FIG. 8, states 0, 1, 2,..., 9, 10, and 11 sequentially show changes in the state when the accessory-side terminal 20 is rotated in the first direction.
In the state 0, the first virtual axis 1002 and the second virtual axis 2002 are matched, and the accessory side terminal surface 2006 of the accessory side connector 20 is aligned with the non-contact area A2 of the electronic device side terminal surface 1006 of the electronic device side connector 10. This corresponds to the state where the tip of each accessory side contact piece 2004 is in contact with the non-contact area A2 of the electronic device side terminal surface 1006.
States 1 to 10 indicate intermediate states between states 1 and 11.
In state 11, the edge 2806 of the terminal board 28 abuts against the convex portion 1212, the position of the accessory side connector 20 in the rotational direction is positioned, and all the accessory side contact pieces 2004 are electrically connected to the corresponding electronic device side contact pieces 1004. This corresponds to the state of electrical conduction.
In the left column in FIG. 8, the names of the 14 contact pieces constituting the electronic device side contact piece 1004 are shown, and each column corresponding to states 1 to 10 indicates each electronic device in that state. The names of the accessory side contact pieces 2004 that are in contact with the side contact pieces 1004 are shown. A blank column having no name in each column indicates that none of the accessory side contact pieces 2004 is in contact.
Based on FIG. 8, changes in state when the accessory-side terminal 10 is rotated in the first direction will be described in order.
First, in state 0, the connector side contact piece 2004 is not in contact with any of the electronic device side contact pieces 1004.
When the accessory-side connector 20 is rotated in the first direction (state 1), the reference potential contact GND of the accessory-side contact piece 2004 is the earliest among all the accessory-side contact pieces 2004 and all the electronic device-side contact pieces 1004. ′ Contacts the reference potential contact GND of the electronic device side contact 1004. This contact is maintained during states 1-11.
Since the reference potential contacts GND and GND ′ are connected first in this way, the reference potential of the accessory 200 and the electronic device 100 immediately becomes the ground level, and thus is less susceptible to electrostatic noise and the like. 200 and the operation of the electronic device 100 are stabilized.
When the accessory-side connector 20 is further rotated in the first direction and moves to the state 2 to the state 8, in this process, the signal input / output contact MicFL, MicFR, MicRL, MicRR among all the electronic device-side contact pieces 1004. , USB +, USB-, MicGND, and Strobo are temporarily contacted with accessory side contact pieces 2004 that do not originally correspond to each of these contact pieces.
However, among all the electronic device side contact pieces 1004, the identification signal contact pieces ID1 and ID2 are temporarily brought into contact with the identification signal contact pieces ID1 and ID2 that do not originally correspond to the accessory side contact pieces 2004, respectively. Thus, the identification signal is not erroneously supplied from the electronic device 100 to the accessory 200, and the electronic device 100 does not detect the erroneous identification signal.
Further, out of all the electronic device side contact pieces 1004, the signal input / output contact pieces S are not temporarily brought into contact with the signal input / output contact pieces S and the accessory side contact pieces 2004 that do not originally correspond to the contact pieces S4. A control signal is not erroneously transmitted between the electronic device 100 and the accessory 200.
When the accessory-side connector 20 is further rotated in the first direction and moves to the state 9, the power supply contact piece V ′ of the accessory-side connector 20 is connected to the power supply contact piece V among all the electronic device side contact pieces 1004. In addition to being connected, the signal input / output contacts S, NC, MicFL, MicFR, MicRL, MicRR, USB +, USB-, MicGND, and Strobo have almost all accessory side contacts 2004 corresponding to each of these contacts. Touched simultaneously.
Even in this state 9, the identification signal contact pieces ID 1 and ID 2 are not temporarily brought into contact with the accessory contact pieces 2004 that do not originally correspond to the identification signal contact pieces ID 1 and ID 2, respectively. 100 does not detect an erroneous identification signal.
Therefore, in the state 9, the accessory side contact pieces 2004 that originally correspond to each of the electronic device side contact pieces 1004 excluding the identification signal contact pieces ID1 and ID2 among all the electronic device side contact pieces 1004 are connected. It becomes the state. However, in this state, the identification signal contacts ID1 and ID2 of the electronic device side contact piece 1004 are not connected to the identification signal contact pieces ID1 ′ and ID2 ′ of the accessory side contact piece 2004. Determines that the accessory 200 is not attached and does not start power supply to the power supply contact piece V.
When the accessory-side connector 20 is further rotated in the first direction and moves to the states 10 and 11, the identification signal contact ID1 and ID2 of the electronic device side contact piece 1004 are changed to the identification signal contact piece ID1 of the accessory side contact piece 2004 and the like. Since 'and ID2' are connected, the electronic device 100 determines that the accessory 200 is attached, identifies the type of the accessory 200, and starts power supply to the power supply contact piece V.
Accordingly, the electronic device 100 is connected to each of the electronic device side contact pieces 1004 excluding the identification signal contact pieces ID1 and ID2 among all the electronic device side contact pieces 1004, respectively. After the state 9, the identification signal contacts ID1 and ID2 of the accessory side contact piece 2004 are connected to the identification signal contact pieces ID1 and ID2 of the electronic device side contact piece 1004, so that the electronic device side Power supply and signal transmission / reception are reliably performed between the contact piece 1004 and the accessory side contact piece 2004. Further, in this embodiment, since the identification signal contacts ID1 and ID2 of the electronic device side contact piece 1004 are in contact with only the identification signal contact pieces ID1 ′ and ID2 ′ of the accessory side contact piece 2004, Supply of power and transmission / reception of signals between the piece 1004 and the accessory side contact piece 2004 are more reliably performed.

When removing the accessory 200 from the electronic device 100, the fastening of the accessory side connector 20 and the electronic device side connector 10 is released by rotating the tightening ring 24.
Next, when the accessory-side connector 20 is rotated in a second direction that is opposite to the first direction in the circumferential direction around the first imaginary axis 1002 and the second imaginary axis 2002, the fan-shaped cover 16 is formed. The part 1604 is rotated together with the terminal plate 28 of the accessory connector 20 and moves from the second position to the first position. As a result, electrical continuity between each accessory side contact piece 2004 and each electronic device side contact piece 1004 is released, and the terminal plate 28 of the accessory side connector 20 is positioned on the pair of non-contact piece regions A2, It is located at a location away from the upper plate 1206.
In this state, the accessory-side connector 20 is linearly moved along the first virtual axis 1002 and the second virtual axis 2002 in a direction away from the electronic device-side terminal surface 1006, whereby the hole portion of the accessory-side connector 20 is obtained. The engagement between 2604 and the shaft member 18 of the electronic device-side connector 10 of the electronic device-side connector 10 is released, and the accessory 200 is removed from the electronic device 100.

Here, changes in the contact state of the electronic device side contact piece 1004 and the accessory side contact piece 2004 when the connection between the electronic device side connector 10 and the accessory side connector 20 is released will be described in detail.
Based on FIG. 8, changes in state when the accessory-side terminal 10 is rotated in the second direction will be described in order.
First, in the states 11 and 10, all the electronic device side contact pieces 1004 are connected to the corresponding accessory side contact pieces 2004, respectively.
When the accessory-side connector 20 is further rotated in the second direction to reach the state 9, among the all electronic device-side contact pieces 1004, the identification signal contact pieces ID1, ID2 to the accessory-side contact piece 2004 are first connected. Since the pieces ID1 ′ and ID2 ′ are released and their connection is released, the electronic device 100 determines that the accessory 200 is not attached by stopping the detection of the identification signal, and supplies power to the accessory 200 or the accessory. Stop sending and receiving signals with 200.
When the accessory side terminal 10 is further rotated in the second direction to be in the state 8, the power supply contact piece V ′ of the accessory side contact piece 2004 is separated from the power supply contact piece V of the electronic device side contact piece 1004. That is, in this embodiment, the power supply contact piece V ′ of the accessory side connector 20 and the power supply contact piece V of the electronic device side connector 10 are rotated when the accessory side connector 20 is rotated in the second direction. Since the identification signal contacts ID1 ′ and ID2 ′ of the accessory side connector 20 and the identification signal contacts ID1 and ID2 of the electronic device side connector 10 are separated from each other,
Further, when the accessory-side terminal 10 is further rotated in the second direction to be in the state 8-2, each of the accessory-side contact pieces 2004 is different from the electronic device-side contact piece 1004 that originally corresponds to the electronic device-side contact piece 1004. However, since the power supply to the accessory 200 and the exchange of signals with the accessory 200 are stopped at the time of the state 9 before the state 8, the accessory side contact piece 2004 and the electronic device side contact piece 1004 are expected. No signal will not flow. Further, even if the detection operation of the identification signal by the electronic device 100 is periodically performed, the accessory side contact piece 2004 and the electronic device can be used as long as the detection operation is performed within the time period from the state 9 to the state 8. An unexpected signal does not flow through the side piece 1004.
Also, in the states 8 to 2, the identification signal contact pieces ID <b> 1 and ID <b> 2 are not temporarily brought into contact with the accessory signal contact pieces 2004 that do not originally correspond to the identification signal contact pieces ID <b> 1 and ID <b> 2. That is, only the identification signal contacts ID1 ′ and ID2 ′ of the accessory side contact piece 2004 are in contact with the identification signal contact pieces ID1 and ID2, so that the electronic device side contact piece 1004 and the accessory side contact piece 2004 are Power supply and signal transmission / reception between the two are performed more reliably.
When the accessory-side connector 20 is rotated in the second direction to reach the state 0 through the state 1, the contact between all the electronic device side contact pieces 1004 and all the accessory side contact pieces 2004 is completely released.

According to the present embodiment, the accessory-side connector 20 is rotated with respect to the electronic device-side connector 10 in the circumferential direction around the first virtual axis 1002 and the second virtual axis 2002, so that both connectors are connected. Since the pieces are conducted, it is not necessary to secure a wide space for mounting the accessory-side connector 20 around the electronic-device-side connector 10, so that the electronic device 100 and the accessory 200 can be downsized, or electronic This is extremely advantageous in improving the design of the device 100 and the accessory 200.
Moreover, since both the contact pieces are made conductive by rotating the accessory-side connector 20 in the circumferential direction with respect to the electronic device-side connector 10, both the contact pieces are made conductive by sliding linearly as in the prior art. Compared to the structure to be made, a large number of contact pieces can be arranged in a limited space, which is advantageous in connecting various signals that increase in response to diversification of accessories. For example, in this embodiment, as shown in FIG. 6, a large number of signals such as microphone signals, strobe signals, imaging signals, identification signals, and power supplies for four channels are exchanged between the electronic device 100 and the accessory 200. As the accessory 200, a microphone, a strobe device, a lighting device, a small camera, or the like can be used.

According to the present embodiment, when the accessory-side connector 20 is removed from the electronic device-side connector 10, the identification signal contact pieces ID 1 and ID 2 of the electronic device-side contact piece 1004 and the accessory-side contact piece 2004 are first used. Since connection with contact piece ID1 'and ID2' is cancelled | released, the detection of the identification signal by the electronic device 100 is stopped, and the power supply with respect to the accessory 200 and transmission / reception of a signal are stopped immediately. For this reason, even if the electronic device side contact piece 1004 and the accessory side contact piece 2004 which do not correspond originally contact with each other, malfunction of both the electronic device 100 and the accessory 200 can be prevented.
When the accessory-side connector 20 is attached to the electronic device-side connector 10, the identification signal contact pieces ID 1 and ID 2 of the electronic device side contact piece 1004 and the identification signal contact pieces ID 1 ′ and ID 2 ′ of the accessory side contact piece 2004 are After all the other electronic device side contact pieces 1004 and the accessory side contact pieces 2004 are connected, the identification signal contact pieces ID1 and ID2 of the electronic device side contact piece 1004 and the accessory side contact pieces 2004 are connected. The identification signal contacts ID1 ′ and ID2 ′ are connected to each other, so that the power supply to the accessory 200 and the transmission / reception of the signal are performed based on the detection of the identification signal by the electronic device 100. Supply and signal exchange are ensured.
Further, when the accessory-side connector 20 is attached to or detached from the electronic device-side connector 10, the identification signal contact pieces ID 1 and ID 2 of the electronic device-side contact piece 1004 are the identification signal contact pieces ID 1 of the accessory side contact piece 2004. Since the contact pieces other than 'and ID2' are not touched, the identification signal is supplied to other contact pieces except for the identification signal contact pieces ID1 'and ID2' in the accessory side contact piece 2004, and the electronic device 100 is erroneously identified. This is advantageous in reliably identifying the accessory 100 without detecting a signal.

Further, in the present embodiment, the power supply contact piece V of the electronic device side contact piece 1004 is formed so as to extend over the entire area in the circumferential direction of the contact piece region A1, so that the size in the circumferential direction can be secured. Therefore, a plurality of power supply contact pieces V ′ of the accessory side contact pieces 2004 can be provided. When a plurality of power supply contact pieces V ′ of the accessory side contact pieces 2004 are provided in this way, the current capacity of the power supply path constituted by the power supply contact pieces V and the plurality of power supply contact pieces V ′ is secured. Further, the contact area can be increased by contacting a plurality of power supply contact pieces V 'with the power supply contact pieces V. Further, when a plurality of power supply contact pieces V ′ of the accessory side contact pieces 2004 are provided, a part of the power supply contact pieces V ′ among the plurality of power supply contact pieces V ′ is electronic equipment due to vibration shock or the like. Even if the contact is instantaneously separated from the power supply contact piece V of the side contact piece 1004 and the contact is cut off, the remaining power supply contact piece V ′ of the accessory side contact piece 2004 is the power supply of the electronic device side contact piece 1004. If it is in contact with the supply contact piece V, the power supply will not be cut off as a whole, which is advantageous in further improving the reliability by making the contact of the contact piece related to the power supply more stable.
In the present embodiment, the reference potential contact GND extending over almost the entire area of the contact area A1 on the same circumference with the radius centered on the first virtual axis 1002 is changed to the circumference of the smallest radius R1. Therefore, the space occupied by the electronic device side terminal surface 1006 can be suppressed, which is advantageous in securing a space for arranging the other electronic device side contact piece 1004 on the electronic device side terminal surface 1006. .
In this embodiment, since the input / output signal contact piece S of the electronic device side contact piece 1004 is provided at the end in the first circumferential direction of the contact piece region A1, the accessory side connector 20 is connected to the electronic device. When the connector 10 is attached to or removed from the side connector 10, the input / output signal contact piece S of the electronic device side contact piece 1004 does not contact other contact pieces of the accessory side contact piece 2004 except the input / output signal contact piece S. Therefore, the control signal supplied from the input / output signal contact piece S of the electronic device side contact piece 1004 may be supplied to other contact pieces other than the input / output signal contact piece S ′ of the accessory side contact piece 2004. This is advantageous in preventing malfunction of the electronic device 100 and the accessory 200.
In this embodiment, the input / output signal contact piece NC of the electronic device side contact piece 1004 is provided at the end in the first circumferential direction of the contact piece region A1, so that the accessory side connector 20 is connected to the electronic device. When the connector 10 is attached to or removed from the side connector 10, the input / output signal contact piece NC of the electronic device side contact piece 1004 contacts the other contact pieces of the accessory side contact piece 2004 except the input / output signal contact piece NC ′. Therefore, the expansion signal supplied from the input / output signal contact piece NC of the electronic device side contact piece 1004 is supplied to the other contact pieces except for the input / output signal contact piece NC of the accessory side contact piece 2004. This is advantageous in preventing malfunction of the electronic device 100 and the accessory 200.
In the present embodiment, the input / output signal contact piece Strobo ′ of the accessory side contact piece 2004 is provided at the end portion in the second direction in the circumferential direction on the accessory side terminal surface 2006. When the device side connector 10 is attached to or detached from the device side connector 10, the input / output signal contact Strobo ′ of the accessory side contact piece 2004 does not contact other contact pieces of the electronic device side contact piece 1004 except the output signal contact piece Strobo. Therefore, a noise signal does not inadvertently flow from the other contact piece to the input / output signal contact piece Strobo ′ of the accessory side contact piece 2004. In particular, when the accessory 200 is a strobe device, the strobe device detects the noise. This is advantageous in preventing light emission due to malfunction due to a signal.

In this embodiment, in the contact area A1, the input / output signal contact MicFL is provided in the middle of the radius R3 in the circumferential direction, and the input / output signal contact MicFR is provided in the middle of the radius R2 in the circumferential direction. The input / output signal contact piece MicRL is provided at the end portion in the second direction in the circumferential direction of the radius R3, and the input / output signal contact piece MicRR is provided at the end portion in the second direction in the circumferential direction of the radius R2. .
When the accessory-side connector 20 is rotated in the second direction and removed from the electronic device-side connector 10, the input / output signal contact pieces MicFL and MicFR of the electronic device-side contact piece 1004 are respectively connected to the accessory-side contact piece 2004. The identification signal contact pieces ID1 ′ and ID2 ′ are in contact with each other, and the input / output signal contact pieces MicRL and MicRR of the electronic device side contact piece 1004 are respectively connected to the input and output signal contact pieces MicRL ′ and MicRR ′ of the accessory side contact piece 2004. And the identification signal contact pieces ID1 ′ and ID2 ′ come into contact with each other.
Therefore, the input / output signal contacts MicFL and MicFR of the electronic device side contact piece 1004 come into contact with the contact pieces that do not originally correspond to these two contact pieces one by one, whereas the electronic device side contact piece 1004 has The input / output signal contact pieces MicRL and MicRR come into contact with the two contact pieces that do not originally correspond to the contact pieces twice.
Thus, noise may occur in the electronic device 100 when contact pieces that do not originally correspond to each other come into contact with each other. Therefore, when the accessory-side connector 20 is removed from the electronic-device-side connector 10, noise generated at the input / output signal contacts MicFL and MicFR of the electronic-device-side contact 1004 corresponding to the front-side audio signals for two channels. However, the noise generated at the input / output signal contacts MicRL and MicRR of the electronic device side contact 1004 corresponding to the audio signals for two channels on the rear side is 2 degrees.
Therefore, when only the audio signals for the two channels on the front side are used, the frequency of occurrence of noise can be suppressed as compared with the case where the audio signals for the four channels on the front side and the rear side are used.

In this embodiment, of the two contact region A1 of the electronic device side terminal surface 1006, one contact region A1 has a reference potential contact GND, a signal input / output contact MicFL, MicFR, MicRL, MicRR and identification signal contacts ID1 and ID2 ′ were provided. The electrical signal passing through each of these contacts can be generally handled as an analog signal, and the voltage and current values and their variations are relatively small.
Of the two contact areas A1, the other contact area A1 is provided with a power supply contact V and a signal input / output contact USB +, USB-, Strobe, MicGND, S, and NC. The electrical signal passing through each of these contacts can be treated as a digital signal, and the voltage and current values and their variations are relatively large.
As described above, since the contact piece for transmitting the analog signal is arranged in one of the two contact piece regions A1 separated from each other, and the contact piece for transmitting the digital signal is arranged in the other, the noise component generated by the digital signal is arranged. Is advantageous in reducing the effect of the analog signal on the analog signal.
As described above, the electronic device side contact piece 1004 is connected to the flexible substrate via the lead pin 1408. Accordingly, the flexible substrate pattern is connected to each of the two input / output signal contacts USB + and USB−. These patterns are desirably provided so that the impedances are as identical as possible in order to efficiently transmit the USB signal. Accordingly, the positions of the two input / output signal contacts USB + and USB− on the terminal board 14 are preferably set so that the impedances of the patterns can be made the same.
In the present embodiment, the case where two pieces of identification signal contact pieces of the electronic device side contact piece 1004 and the accessory side contact piece 2004 are provided is described. However, each of these identification signal contact pieces is provided one by one. Of course, three or more of them may be provided.

In the present embodiment, the stopper that stops the rotation of the accessory-side connector 20 in the circumferential direction around the first virtual axis 1002 is configured by the convex portion 1212 provided in the electronic device-side connector 10, but the stopper May be provided on the accessory-side connector 20, and the shape and location of such a stopper are arbitrary.
Needless to say, the fixing means is not limited to the configuration of the present embodiment, and can be realized by various conventionally known mechanisms such as providing the electronic device 100 or the accessory 200 with a clip or a hook.
Further, the cover 16 may be omitted. In this case, the accessory-side terminal surface 2006 is directly provided on the distal end surface 2602 of the shaft-shaped member 22, but when the cover 16 is provided as in the embodiment, This is advantageous in protecting the electronic device side contact piece 1004 when the accessory 200 is not used.
Further, in this embodiment, the guide portion is constituted by each inner peripheral surface 1210 of the electronic device side connector 10 and the shaft member 18, and the engaging portion is formed by the outer peripheral surface 2606 and the hole portion 2604 of the shaft portion 26 of the accessory side connector 20. However, various conventionally known mechanisms can be employed as the guide portion and the engaging portion.

Next, Example 2 will be described.
In the first embodiment, the electronic device side contact piece and the accessory side contact piece are provided on the circumferences of three different radii, whereas in the second embodiment, the electronic device side contact piece and the accessory side contact piece are provided. Are provided on the circumferences of two different radii.
FIG. 9 is an explanatory view showing the positional relationship between the contact piece of the electronic device side connector and the contact piece of the accessory side connector in the second embodiment, and the same reference numerals are given to the same or the same parts as in the first embodiment. The description is omitted.
In the figure, the symbols MicR, MicL, Mic3, and Mic4 correspond to MicFR, MicFL, MicRR, and MicRL in the first embodiment.
As shown in FIG. 9, in the contact piece region A1, a plurality of electronic device side contact pieces are respectively provided on two circumferences of a radius R1 centered on the first virtual axis 1002 and a radius R2 larger than the radius R1. 1004 is provided, and a plurality of accessory sides are provided on two circumferences of a radius R11 having the same dimension as the radius R1 around the second virtual axis 2002 and a radius R12 having the same dimension as the radius R2 on the terminal surface 2006, respectively. A contact piece 2004 is provided.
Needless to say, this configuration also achieves the same operational effects as the first embodiment.
Of course, the electronic device side contact piece and the accessory side contact piece may be provided on the circumferences of four or more radii different from each other.

In addition, in each Example, although illustrated about the case where an accessory shoe apparatus is applied to a video camera, this invention is not limited to this, Various electronic devices, for example, personal digital astant (PDA) with a camera, Of course, the present invention can be applied to various imaging devices such as digital still cameras and film cameras.
In such an electronic device, as a medium for recording captured image data, for example, a magnetic recording medium such as a magnetic tape, a hard disk, an IC card, a micro optical disk, or the like can be used.

It is the perspective view which looked at the electronic device of Example 1 from the front. It is a perspective view of the electronic device side connector provided in the electronic device. Electronic equipment side. It is a disassembled perspective view of a connector. It is a perspective view of an accessory. It is a perspective view of the accessory side connector provided in the accessory. It is sectional drawing which shows the state with which the electronic device side connector and the accessory side connector were couple | bonded. It is explanatory drawing which shows the positional relationship of the contact piece of the electronic device side connector in Example 1, and the contact piece of an accessory side connector. It is a state transition diagram explaining the change of the contact state of the electronic device side contact piece 1004 and the accessory side contact piece 2004. FIG. It is explanatory drawing which shows the positional relationship of the contact piece of the electronic device side connector in Example 2, and the contact piece of an accessory side connector.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Electronic device, 200 ... Accessory, 10 ... Electronic device side connector, 20 ... Accessory side connector, 1002 ... First virtual axis, 1004 ... Electronic device side contact piece, 1006 ... Electronic device side Terminal surface 2002 ...... Second virtual axis 2004 ...... Accessory side contact piece 2006 ...... Accessory side terminal face ID1, ID2 ... Identification signal contact piece ID1 ', ID2' ... Identification signal contact Piece.

Claims (17)

An accessory shoe device comprising an electronic device-side connector provided on an electronic device and having a plurality of electronic device-side contact pieces, and an accessory-side connector provided on an accessory attached to the electronic device and having a plurality of accessory-side contact pieces. And
The electronic device side connector extends in a direction intersecting with the first virtual axis, and the plurality of electronic device side contact pieces are provided on a circumference centering on the first virtual axis. Electronic device side terminal surface,
At least one of the electronic device side contacts of the electronic device side connector includes an identification signal contact for supplying an identification signal for identifying the accessory to the accessory,
The accessory-side connector extends in a direction intersecting the second virtual axis, and the plurality of accessory-side contact pieces are provided on a circumference centering on the second virtual axis. Has an accessory side terminal surface,
At least one of the accessory side contact pieces of the accessory side connector includes an identification signal contact piece to which the identification signal is supplied,
An engaging portion is provided in the vicinity of the accessory side terminal surface,
In the vicinity of the electronic device side terminal surface, the first virtual axis and the second virtual axis are matched and the accessory side terminal surface of the accessory side connector of the accessory is aligned with the electronic device side terminal surface. A guide portion is provided that engages with the engagement portion by rotation of the accessory-side connector in a circumferential direction around the virtual axis and guides rotation of the accessory-side connector;
The plurality of electronic device side contact pieces and the plurality of accessory side contact pieces match the first virtual axis and the second virtual axis and align the accessory side terminal surface of the accessory side connector with the electronic device side terminal surface. By rotating the accessory-side connector in the first direction in the circumferential direction around the virtual axis, the two come into contact with each other, and in the circumferential direction around the virtual axis, the direction is opposite to the first direction. The accessory side connector is configured to be separated by rotating the accessory side connector in a certain second direction,
The identification signal contact piece of the accessory side connector and the identification signal contact piece of the electronic device side connector are all accessory side contact pieces and all of the accessory side contact pieces when the accessory side connector is rotated in the second direction. An accessory shoe device characterized in that it is configured to be the earliest among the electronic device side contact pieces. The identification signal contact piece of the accessory side connector and the identification signal contact piece of the electronic device side connector are all the accessory side contact pieces and all of the accessory side contact pieces when the accessory side connector is rotated in the first direction. The accessory shoe device according to claim 1, wherein the accessory shoe device is configured to contact the latest among the electronic device side contact pieces. At least one of the electronic device side contact pieces of the electronic device side connector includes a reference potential contact piece for supplying a reference potential to the accessory, and at least of the accessory side contact pieces of the accessory side connector. One includes a reference potential contact to which a reference potential is supplied, and resistance means having a predetermined resistance value is connected between the identification signal contact and the reference potential contact of the accessory side connector. The identification signal is transmitted from the identification signal contact piece of the electronic device side connector, through the identification signal contact piece of the accessory side connector, the resistance means, and the reference potential contact piece of the accessory side connector. The accessory shoe device according to claim 1, wherein the accessory shoe device is transmitted to the reference potential contact piece. When the accessory side connector is rotated in the first direction and the second direction, the identification signal contact piece of the electronic device side connector contacts only the identification signal contact piece of the accessory side connector. The accessory shoe device according to claim 1, wherein the accessory shoe device is configured. At least one of the electronic device side contact pieces of the electronic device side connector includes a power supply contact piece that supplies power to the accessory to the accessory, and at least one of the accessory side contact pieces of the accessory side connector. One includes a power supply contact piece to which the power is supplied, and the power supply contact piece of the accessory side connector and the power supply contact piece of the electronic device side connector are in the second direction. When the accessory side connector is rotated, the identification signal contact piece of the accessory side connector and the identification signal contact piece of the electronic device side connector are separated and separated from each other. The accessory shoe device according to claim 1. At least one of the electronic device side contact pieces of the electronic device side connector includes a reference potential contact piece for supplying a reference potential to the accessory, and at least of the accessory side contact pieces of the accessory side connector. One includes a reference potential contact to which a reference potential is supplied, and the reference potential contact of the accessory side connector and the reference potential contact of the electronic device side connector are in the first direction. When the accessory side connector is rotated, all the accessory side contact pieces and all the electronic device side contact pieces are contacted earliest, and all the accessory side contact pieces and all the electronic device side contact pieces are The accessory shoe device according to claim 1, wherein the accessory shoe device is configured to keep in contact with the contacted state. The electronic device-side terminal surface has a contact region where the electronic device-side contact piece is provided and a non-contact region where the electronic device-side contact piece is not provided around the first virtual axis. The identification signal contact piece of the electronic device side connector is provided at the end in the first direction in the contact region of the electronic device side terminal surface, and is used for the identification signal of the accessory side connector. The contact piece is provided at an end portion of the accessory side terminal surface in the first direction, and when the accessory side connector is rotated in the first direction, the contact pieces for the identification signal contact last. The accessory shoe device according to claim 1. The electronic device-side contact piece of the electronic device-side connector includes a power supply contact piece that supplies power to the accessory to the accessory, and a reference potential contact piece that supplies a reference potential to the accessory. The accessory-side contact piece of the accessory-side connector includes a power supply contact piece to which the power is supplied and a reference potential contact piece to which the reference potential is supplied. Includes a contact piece region in which the electronic device side contact piece is provided in a sector region centered on the first imaginary axis, and a sector region centered on the first virtual axis. A non-contacting region where no piece is provided is provided with a phase shifted around the first virtual axis, and in the contacting region, the power supply contact, the reference potential contact, The identification signal contact piece is the first piece. The accessory-side terminal surface is formed with the power supply contact piece, the reference potential contact piece, and the identification signal contact piece formed on the circumferences of different radii around the ideal axis. The accessory shoe device according to claim 1, wherein the accessory shoe device is formed on a circumference of a different radius around the second virtual axis. At least one of the electronic device side contact pieces of the electronic device side connector includes a signal input / output contact piece for transmitting and receiving an electric signal to and from the accessory, and the accessory side contact piece of the accessory side connector At least one of them includes a signal input / output contact piece through which the electrical signal is transmitted and received, and the electronic device side terminal surface has a fan-shaped region centered on the first virtual axis. A contact region where the device side contact piece is provided and a non-contact piece region where the electronic device side contact piece is not provided in a fan-shaped region centered on the first virtual axis are the first virtual axis. And the identification signal contact piece and the signal input / output contact piece are on the same circumference with the same radius centered on the first virtual axis. And are formed to extend at intervals in the circumferential direction, On the accessory side terminal surface, the identification signal contact piece and the signal input / output contact piece are spaced circumferentially on the same circumference with the same radius centered on the second virtual axis. The accessory shoe device according to claim 1, wherein each of the accessory shoe devices is formed. The electronic device-side terminal surface includes a contact region where the electronic device-side contact piece is provided in a fan-shaped region centered on the first virtual axis, and a fan-shaped region centered on the first virtual axis. 2. The non-contact piece region where the electronic device side contact piece is not provided is provided alternately two by two with a phase shift around the first virtual axis. Accessory shoe device. The guide portion includes a shaft member that is positioned on the first virtual axis, protrudes from the terminal surface on the electronic device side, and is supported on the electronic device side terminal surface so as to be rotatable around the first virtual axis. The accessory shoe device according to claim 1, wherein the accessory shoe device is included. A plate member having an inner peripheral surface extending around the first virtual axis at a location away from the electronic device-side terminal surface along the first virtual axis is provided, and the guide portion includes the inner peripheral surface. The accessory shoe device according to claim 1, comprising a surface. The guide portion includes a stopper that stops the rotation of the accessory-side connector in the first direction at a rotation angle that electrically connects the electronic device-side contact piece and the accessory-side contact piece. The accessory shoe device according to claim 1. The guide portion is a shaft member that is located on the first virtual axis, protrudes from the electronic device side terminal surface, and is supported on the electronic device side terminal surface so as to be rotatable around the first virtual axis. The electronic device-side terminal surface is formed in a fan-shaped area centered on the first virtual axis and a fan-shaped area centered on the virtual axis. A closed position in which the electronic device side contact piece is not provided in the region and is rotated integrally with the shaft member to cover the contact piece region and open the non-contact piece region; The accessory shoe device according to claim 1, wherein a cover serving as an open position that opens the contact piece region and covers the non-contact piece region is provided. The accessory shoe device according to claim 1, further comprising a fixing unit that detachably fixes both connectors in a state where the electronic device side contact piece and the accessory side contact piece are electrically connected. An electronic device including an electronic device side connector having a plurality of electronic device side contact pieces,
The electronic device side connector has an electronic device side terminal surface extending in a direction intersecting the virtual axis,
On the terminal surface of the electronic device side, a contact piece region where the electronic device side contact piece is provided and a non-contact piece region where the electronic device side contact piece is not provided are shifted in phase around the virtual axis. Provided,
Near the electronic device side terminal surface, align the terminal surface of the mating connector with the electronic device side terminal surface, rotate the mating connector in a circumferential direction around the virtual axis, and connect the electronic device side contact piece. And a guide portion for guiding the mating connector so as to electrically connect the contact piece of the mating connector,
At least one of the electronic device side contact pieces includes an identification signal contact piece for supplying an identification signal for identifying the other party to the other party,
The identification signal contact piece is arranged on the circumference of the same radius in the contact piece region along with the other electronic device side contact piece at intervals in the circumferential direction, and among these electronic device side contact pieces, The electronic device is arranged at the end in the circumferential direction, and finally comes into contact with the counterpart for identification signal when the counterpart connector is rotated in the circumferential direction. An accessory comprising an accessory side connector having a plurality of accessory side contact pieces and coupled to an electronic device side connector of an electronic device,
The accessory-side connector includes an accessory-side terminal surface that extends in a direction intersecting the virtual axis and is provided with the accessory-side contact piece.
The accessory side connector is engaged with a guide portion of the electronic device side connector at a location near the accessory side terminal surface, and the accessory side terminal surface is aligned with the terminal surface of the electronic device side connector, and the virtual axis is the center. The accessory side connector is rotated in a first direction in the circumferential direction to electrically connect the accessory side contact piece and the contact piece of the electronic device side connector, and the first direction in the circumferential direction is the first direction. An engagement portion is provided that is guided by the guide portion so that the accessory-side connector is rotated in the opposite second direction and the accessory-side contact piece and the contact piece of the electronic device-side connector are separated from each other.
At least one of the accessory side contact pieces of the accessory side connector includes an identification signal contact piece that receives an identification signal for identifying the accessory,
The identification signal contact piece is provided at the end in the first direction on the accessory side terminal surface among all the accessory side contact pieces, and rotates the accessory side connector in the first direction. The accessory contacts the identification signal contact piece of the electronic device side connector at the end.

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