Mount capable of mounting accessory, and image pickup apparatus

Patent metadata

Field	Value
Publication number	US-10510229-B2
Application number	US-201816102831-A
Country	US
Kind code	B2
Filing date	Aug 14, 2018
Priority date	Aug 29, 2017
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

A mount aims to prevent an accessory mountable in an image pickup apparatus from being stolen using a simple configuration. The mount is disposed in a main body of an image pickup apparatus, and comprises a first mount portion attachable/detachable with respect to an accessory. The first mount portion includes a fixing portion fixed to the main body of the image pickup apparatus, a fixed mount portion fixed and held to the fixing portion, a movable mount portion relatively rotatable with respect to the fixed mount portion with an optical axis of the image pickup apparatus as a center, a mount ring rotatable with the movable mount portion, and an insertion portion to which an operation member to switch a non-lock state and a lock state of the accessory with respect to the first mount portion is inserted from an outside of the first mount portion.

First claim

What is claimed is:

1. A mount that is capable of being disposed in a main body of an image pickup apparatus, the mount comprising a first mount portion configured to be attachable/detachable with respect to an accessory,
wherein the first mount portion includes:
a fixing portion that is fixed to the main body of the image pickup apparatus;
a fixed mount portion that is fixed and held to the fixing portion;
a movable mount portion that is relatively rotatable with respect to the fixed mount portion with an optical axis of the image pickup apparatus as a center;
a mount ring that is rotatable with the movable mount portion; and
an insertion portion to which an operation member to switch a non-lock state and a lock state of the accessory with respect to the first mount portion is inserted from an outside of the first mount portion,
the insertion portion includes a first fitting portion to which an operation portion of the operation member is fitted, and a second fitting portion to which a support portion different from the operation portion of the operation member is fitted,
the first fitting portion is formed by an opening that is formed by opening a side where the accessory is mounted in the optical axis direction, and a pair of wall portions that are opposed to each other with reference to the circumferential direction of the first mount portion, and
the second fitting portion has a regulation portion to regulate a movement of the operation member in the optical axis direction in a state where the operation member is fitted, and is disposed at a position different from the first fitting portion in the optical axis direction.

2. The mount according to claim 1 , wherein the first mount portion is coupled to a second mount portion disposed in the accessory by a bayonet coupling system.

3. The mount according to claim 1 , wherein the fixed mount portion includes a plurality of claw portions in the image pickup apparatus that is engaged, in the optical axis direction, with a plurality of claw portions in the accessory provided in the second mount portion.

4. The mount according to claim 1 , wherein the regulation portion includes a plurality of regulation portions that come into contact with a support portion of the operation member in the optical axis direction in a state where the operation member is inserted to the insertion portion, and
the second fitting portion is formed by the plurality of regulation portions.

5. The mount according to claim 4 , wherein the opening is positioned between the plurality of regulation portions in the circumferential direction of the first mount portion.

6. The mount according to claim 1 , wherein a plurality of the first fitting portions are provided in the circumferential direction of the first mount portion, and
the second fitting portion is provided between the plurality of the first fitting portions in the circumferential direction of the first mount portion.

7. The mount according to claim 1 , wherein the second fitting portion does not regulate a movement of the operation member in the circumferential direction of the first mount portion perpendicular to the optical axis.

8. The mount according to claim 7 , wherein the second fitting portion includes a taper portion in the circumferential direction of the first mount portion perpendicular to the optical axis so as not to regulate a movement of the operation member in the circumferential direction of the first mount portion.

9. The mount according to claim 1 , wherein the wall portion of the first fitting portion is formed with a taper portion along the opening on a side where the accessory is mounted.

10. An image pickup apparatus having a mount that is capable of being disposed in a main body of an image pickup apparatus,
the mount comprising a first mount portion configured to be attachable/detachable with respect to an accessory,
wherein the first mount portion includes:
a fixing portion that is fixed to the main body of the image pickup apparatus;
a fixed mount portion that is fixed and held to the fixing portion;
a movable mount portion that is relatively rotatable with respect to the fixed mount portion with an optical axis of the image pickup apparatus as a center;
a mount ring that is rotatable with the movable mount portion; and
an insertion portion to which an operation member to switch a non-lock state and a lock state of the accessory with respect to the first mount portion is inserted to an outer peripheral portion of the first mount portion,
the insertion portion includes a first fitting portion to which an operation portion of the operation member is fitted, and a second fitting portion to which a support portion different from the operation portion of the operation member is fitted,
the first fitting portion is formed by an opening that is formed by opening a side where the accessory is mounted in the optical axis direction, and a pair of wall portions that are opposed to each other with reference to the circumferential direction of the first mount portion, and
the second fitting portion has a regulation portion to regulate a movement of the operation member in the optical axis direction in a state where the operation member is fitted, and is disposed at a position different from the first fitting portion in the optical axis direction.

11. The image pickup apparatus according to claim 10 , further comprising a terminal of the image pickup apparatus configured to communicate with the accessory in an outer peripheral portion of the first mount portion by being electrically connected to a terminal of the accessory disposed in the accessory,
wherein the terminal of the image pickup apparatus overlaps with at least a part of the operation member in a state where the operation member is inserted to the insertion portion in a radial direction of the first mount portion in the lock state of the accessory with respect to the first mount portion.

12. The image pickup apparatus according to claim 10 , wherein the insertion portion is capable of receiving an operation member provided with an extension portion extending from an insertion side of the insertion portion, and
a tip end of the extension portion protrudes from a contour of the main body of the image pickup apparatus in a direction perpendicular to the optical axis.

13. The image pickup apparatus according to claim 12 , wherein the tip end of the extension portion is bent not to interfere with the accessory in a state where the accessory is mounted in the first mount portion.

Assignees

• Canon Kk

Inventors

• Shimizu Yoko

Classifications

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• G08B13/06 Primary

  by tampering with fastening · CPC title

• H04N23/51

  Housings · CPC title

• G08B13/12

  by the breaking or disturbance of stretched cords or wires · CPC title

• G08B13/1445 Primary

  with detection of interference with a cable tethering an article, e.g. alarm activated by detecting detachment of article, breaking or stretching of cable (furniture, e.g. shelves for displaying merchandise, incorporating tethers to prevent theft A47F7/024, A47F5/0861) · CPC title