# US 2013/0154565 A1 · Foreign material removing structure for charger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0154565 A1 - Document ID: US20130154565A1 - Status: Published application - Kind: A1 - Application number: 13/819,135 - Filed: 2011-08-31 - Published: 2013-06-20 - Earliest claimed: 2010-08-31 - Assignees: Makita Corporation - Inventors: Mamoru Sakai; Kouji Okamura - Web page: https://patentgrep.com/patent/US20130154565A1 ## CPC - H01R 11/281: {for connections to batteries} - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - H01R 13/44: Means for preventing access to live contacts {(making use of a switch actuated by engagement of counterpart H01R13/7036)} - H02J 7/70: characterised by the mechanical construction - H02J 7/751: {concerning the insertion or the connection of the batteries} - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - H01R 13/11: Resilient sockets (carrying separate resilient parts H01R13/15) - Y02E 60/10: Energy storage using batteries - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A foreign material removing structure includes an inserting hole, a battery-side terminal, and a push-out section. The hole provided in a battery pack extends in an attaching direction of the pack, and has an opening that a charger-side terminal can enter, the opening being formed in one end side in an extending direction. The battery-side terminal is provided in the hole to contact the charger-side terminal that enters the hole from the opening when the pack is attached to the charger. The section provided on the further forward side in the attaching direction than the opening in the pack has a surface that intersects the attaching direction. The structure is configured such that the section is at a region shifted to the further forward side in the attaching direction than the charger-side terminal when the forward side in the attaching direction of the battery-side terminal contacts the charger-side terminal. ## Claims ### Claim at position 1 1-8. (canceled) ### Claim 9 A foreign material removing structure for removing foreign material adhering to a charger-side terminal of a charger to which a battery pack for electric power tool is detachably attached, the foreign material removing structure comprising: an inserting hole that is provided in the battery pack, extends along an attaching direction of the battery pack, and includes an opening that the charger-side terminal can enter, the opening being formed on one end side in an extending direction of the inserting hole, a battery-side terminal that is provided in the inserting hole and is to be in contact with the charger-side terminal that enters the inserting hole from the opening when the battery pack is attached to the charger, and a push-out section that is provided on a further forward side in the attaching direction than the opening in the battery pack, and has a surface that intersects the attaching direction, the foreign material removing structure being configured such that the push-out section is located at a region shifted to the further forward side in the attaching direction than the charger-side terminal when the forward side in the attaching direction of the battery-side terminal is in contact with the charger-side terminal. ### Claim 10 (depends on 9) The foreign material removing structure according to claim 9, wherein a size from the surface of the push-out section to the battery-side terminal is larger than a size of a region parallel to the attaching direction in the charger-side terminal. ### Claim 11 (depends on 9) The foreign material removing structure according to claim 9, wherein the charger-side terminal protrudes in a direction orthogonal to the attaching direction from a base surface of the charger, the push-out section has a shape that protrudes in a direction orthogonal to the attaching direction from an outer wall surface of the battery pack, the outer wall surface of the battery pack and the base surface of the charger are opposed to each other, and a tip end in a protruding direction of the push-out section is located further on the base surface side than a tip end in a protruding direction of the charger-side terminal, when the battery pack is attached to the charger. ### Claim 12 (depends on 11) The foreign material removing structure according to claim 11, further comprising: a holding section made of electrically insulating material, the holding section being located on the forward side in the attaching direction with respect to the charger-side terminal and protruding in a direction parallel to the protruding direction of the charger-side terminal from the base surface to hold the charger-side terminal, wherein a holding section height which is a size from the base surface to the tip end in the protruding direction of the holding section is equal to or less than a terminal height which is a size from the base surface to the tip end in the protruding direction of the charger-side terminal. ### Claim 13 (depends on 11) The foreign material removing structure according to claim 11, wherein a holding section height on the charger-side terminal side in the holding section is equal to or less than a terminal height on the holding section side in the charger-side terminal, a tapered surface in which the holding section height gradually increases with increase in distance from the charger-side terminal to the forward side in the attaching direction is provided on the charger-side terminal side of the holding section, the holding section height is a size from the base surface to the tip end in the protruding direction of the holding section, and the terminal height is a size from the base surface to the tip end in the protruding direction of the charger-side terminal. ### Claim 14 (depends on 12) The foreign material removing structure according to claim 12, wherein the inserting hole has a pair of side wall sections that are provided so as to be opposed to each other across the battery-side terminal and extend from the opening to a rearward side in the attaching direction, and the push-out section is provided at a region corresponding to one of the pair of side wall sections. ### Claim 15 (depends on 13) The foreign material removing structure according to claim 13, wherein the inserting hole has a pair of side wall sections that are provided so as to be opposed to each other across the battery-side terminal and extend from the opening to a rearward side in the attaching direction, and the push-out section is provided at a region corresponding to one of the pair of side wall sections. ### Claim 16 (depends on 14) The foreign material removing structure according to claim 14, wherein the push-out section is configured as a protrusion that extends from one of the pair of side wall sections to the forward side in the attaching direction. ### Claim 17 (depends on 15) The foreign material removing structure according to claim 15, wherein the push-out section is configured as a protrusion that extends from one of the pair of side wall sections to the forward side in the attaching direction. ### Claim 18 (depends on 16) The foreign material removing structure according to claim 16, wherein the holding section is provided at a position shifted from a region corresponding to the push-out section. ### Claim 19 (depends on 17) The foreign material removing structure according to claim 17, wherein the holding section is provided at a position shifted from a region corresponding to the push-out section.