# US 2021/0240057 A1 · Lens barrel and exterior housing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0240057 A1 - Document ID: US20210240057A1 - Status: Published application - Kind: A1 - Application number: 17/238,648 - Filed: 2021-04-23 - Published: 2021-08-05 - Earliest claimed: 2018-11-12 - Assignees: FUJIFILM Corporation - Applicants: FUJIFILM Corporation - Inventors: Nobuyuki Kondo; Kazuyoshi Azegami - Web page: https://patentgrep.com/patent/US20210240057A1 ## CPC - G03B 17/14: interchangeably - G02B 7/021: {for more than one lens} - G02B 7/022: {lens and mount having complementary engagement means, e.g. screw/thread} - G03B 17/565: {Optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors} - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract Provided are a lens barrel and an exterior housing with a high appearance dignity and an excellent strength. A switch pedestal (20) includes four fixation metal fitting mounting shafts (25) that protrude to the inside of a fixation frame (10) through an opening portion (13) provided in the fixation frame (10). A fixation portion (26) is provided at a distal end of each fixation metal fitting mounting shaft (25). A fixation metal fitting (30) is attachably and detachably mounted onto the fixation portion (26). The fixation metal fitting (30) is formed of a leaf spring. The fixation metal fitting (30) mounted onto the fixation metal fitting mounting shafts (25) is engaged with an inner peripheral surface of the fixation frame (10) with a spring portion (32) elastically deformed. As a result, a force that pulls the switch pedestal (20) into the inside of the fixation frame (10) acts and the switch pedestal (20) is fixed to the fixation frame (10) with a flange portion (24) of the switch pedestal (20) pressed against an outer peripheral surface of the fixation frame (10). ## Claims ### Claim 1 A lens barrel comprising: a frame that has an opening portion; a cover member that covers the opening portion; a fitted portion that is provided on an inner surface side of the cover member, and is fitted into the opening portion to position the cover member with respect to the frame in a case where the opening portion is covered with the cover member; a fixation portion that is provided on an inner surface side of the cover member and is disposed inside the frame through the opening portion in a case where the opening portion is covered with the cover member; and a spring member that is engaged with the fixation portion and an inner wall surface portion of the frame and biases the cover member in a direction in which the cover member is pulled into an inside of the frame. ### Claim 2 (depends on 1) The lens barrel according to claim 1, wherein the opening portion is formed of a single opening. ### Claim 3 (depends on 1) The lens barrel according to claim 1, wherein the spring member is formed of a leaf spring and has a main body portion mounted onto the fixation portion and a spring portion to be engaged with the inner wall surface portion of the frame. ### Claim 4 (depends on 3) The lens barrel according to claim 3, wherein the frame has a spring member fitting portion that is provided at the inner wall surface portion and into which a portion of the spring portion of the spring member is fitted, and the spring member is retained with the portion of the spring portion fitted into the spring member fitting portion. ### Claim 5 (depends on 3) The lens barrel according to claim 3, wherein the fixation portion has a slit into which a portion of the main body portion of the spring member is inserted, and the spring member is mounted onto the fixation portion with the portion of the main body portion inserted into the slit. ### Claim 6 (depends on 5) The lens barrel according to claim 5, wherein the fixation portion is provided at a distal end of a projecting portion having a columnar shape and has the slit in a direction orthogonal to a protruding direction of the projecting portion, and the main body portion of the spring member has at least one of a notch or an elongated hole that is inserted into the slit. ### Claim 7 (depends on 3) The lens barrel according to claim 3, wherein the cover member has an electronic circuit substrate on the inner surface side thereof, and the spring member is attached to the cover member with the main body portion engaged with the fixation portion and the main body portion covers the electronic circuit substrate. ### Claim 8 (depends on 7) The lens barrel according to claim 7, wherein the cover member has a switch member. ### Claim 9 (depends on 8) The lens barrel according to claim 8, wherein the switch member is a slide switch. ### Claim 10 (depends on 1) The lens barrel according to claim 1, wherein the frame has a cylindrical shape. ### Claim 11 (depends on 1) The lens barrel according to claim 1, further comprising: packing that is mounted between the frame and the cover member. ### Claim 12 (depends on 1) The lens barrel according to claim 1, wherein a plurality of the fixation portions are provided at the cover member. ### Claim 13 (depends on 12) The lens barrel according to claim 12, wherein the fixation portions are disposed symmetrically with respect to a center or a center of gravity of the cover member. ### Claim 14 (depends on 1) The lens barrel according to claim 1, further comprising: a claw portion that is provided at the cover member and is engaged with an edge of the opening portion of the frame. ### Claim 15 An exterior housing comprising: an exterior body that has an opening portion and has a tubular shape; a cover member that covers the opening portion from an outside of the exterior body; a fitted portion that is provided on an inner surface side of the cover member, and is fitted into the opening portion to position the cover member with respect to the frame in a case where the opening portion is covered with the cover member; a fixation portion that is provided on an inner surface side of the cover member and is disposed inside the exterior body through the opening portion in a case where the opening portion is covered with the cover member; and a spring member that is engaged with the fixation portion and an inner wall surface portion of the exterior body and biases the cover member in a direction in which the cover member is pulled into an inside of the exterior body.