# US 9,040,818 B2 · Dust-proof mechanism and electronic device using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,040,818 B2 - Document ID: US9040818B2 - Status: Granted - Kind: B2 - Application number: 14/014,622 - Filed: 2013-08-30 - Published: 2014-03-20 - Granted: 2015-05-26 - Earliest claimed: 2012-09-20 - Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd.; Hon Hai Precision Industry Co., Ltd. - Applicants: Fu Tai Hua Industry (Shenzhen) Co., Ltd.; Hon Hai Precision Industry Co., Ltd. - Inventors: Ju-Ping Duan - Web page: https://patentgrep.com/patent/US9040818B2 ## CPC - H01R 13/5202: {Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings} - H01R 24/58: Contacts spaced along longitudinal axis of engagement - Y10S 248/906: Electrical outlet box support - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract An electronic device with an inbuilt mechanism sealing unused interface holes, or gaps, against dust is disclosed. The dust-proof mechanism includes two blocking members and two elastic members. The two blocking members are movably mounted on a bottom wall of a housing and close an interface hole in the manner of drawn curtains. The two blocking members are urged together by the elastic members. When an object is inserted into the interface hole, the guiding surfaces guide and ride over the inserted object, moving the two blocking members away from each other. When the object is pulled out of the interface hole, the two blocking members are moved back toward each other by the elastic members. ## Claims ### Claim 1 A dust-proof mechanism used for an electronic device housing, comprising: two mounting members oppositely mounted inside of the electronic device housing; and two blocking members movably coupled to the mounting members respectively by at least one elastic member and configured to seals an interface hole of the electronic device housing, each of the two blocking members comprising a guiding surface; wherein the two blocking members are pushed or pulled together by the at least one elastic member, when an insert is inserted into the interface hole, each of the guiding surfaces guide the insert, and the two blocking members are moved away from each other to open the interface hole; when the insert is pulled out of the interface hole, the two blocking members are moved toward each other by the elastic member and the two blocking members close the interface hole. ### Claim 2 (depends on 1) The dust-proof mechanism of claim 1, wherein the mounting members are correspondingly located relative to the interface hole, each of the two mounting members and a sidewall of the electronic device housing cooperatively form a support portion, each of the two blocking members is slidable in the support portion, the at least one elastic member comprises two elastic members, one end of each of the two elastic members is connected to one of the two mounting members, and another end of each of the two elastic members is connected to one of the two blocking members. ### Claim 3 (depends on 2) The dust-proof mechanism of claim 2, wherein each of the two mounting members comprises a main body and a receiving portion formed by a depression in the main body, each of the two blocking members comprises a base portion, and opposite surfaces of the base portion respectively contact the electronic device housing and the receiving portion. ### Claim 4 (depends on 3) The dust-proof mechanism of claim 3, wherein the each of the blocking members further comprises a resisting portion extending from the base portion, the resisting portion comprises a resisting surface and an end surface connected to the resisting surface, the resisting surface is configured to contact the sidewall of the electronic device housing, and the end surface contacts the main body. ### Claim 5 (depends on 3) The dust-proof mechanism of claim 3, wherein the support portion defines a guiding groove, the resisting portion is slidably received in the guiding groove. ### Claim 6 (depends on 1) The dust-proof mechanism of claim 1, wherein one end of the at least one elastic member is configured to be connected to the electronic device housing, and another end of the at least one elastic member is connected to each of the two blocking members. ### Claim 7 (depends on 1) The dust-proof mechanism of claim 1, wherein the at least one elastic member is a bent elastic sheet or a spring. ### Claim 8 (depends on 1) The dust-proof mechanism of claim 1, wherein the two blocking members are rotatably mounted on the electronic device housing, the at least one elastic member interconnects each of the two blocking members such that the two blocking members are pulled toward each other by the at least one elastic member. ### Claim 9 (depends on 8) The dust-proof mechanism of claim 8, wherein the at least one elastic member is a tension spring. ### Claim 10 An electronic device, comprising: a bottom housing comprising a bottom wall and a sidewall extending from a periphery of the bottom wall, the bottom wall and the sidewall cooperatively defining a receiving space, the sidewall defining an interface hole; and a dust-proof mechanism mounted on the bottom housing correspondingly located relative to the interface hole, the dust-proof mechanism being configured to seal the interface hole, the dust-proof mechanism comprising: two mounting members oppositely mounted inside of the bottom housing; and two blocking members movably coupled to the mounting members respectively by at least one elastic member and configured to seal the interface hole, each of the two blocking members comprising a guiding surface; wherein the two blocking members are pushed or pulled together by the at least one elastic member, when an insert is inserted into the interface hole, each of the guiding surfaces guide the insert, and the two blocking members are moved away from each other to open the interface hole; when the insert is pulled out of the interface hole, the two blocking members are moved toward each other by the elastic member and the two blocking members close the interface hole. ### Claim 11 (depends on 10) The electronic device of claim 10, wherein the mounting members are correspondingly located relative to the interface hole, each of the two mounting members and the sidewall cooperatively form a support portion, each of the two blocking members is slidable in the support portion, the at least one elastic member comprises two elastic member, one end of each of the two elastic member is connected to each of the two mounting members, and another end of each of the two elastic member is connected to each of the two blocking members. ### Claim 12 (depends on 11) The electronic device of claim 11, wherein each of the two mounting members comprises a main body and a receiving portion formed by a depression in the main body, each of the two blocking members comprises a base portion, and opposite surfaces of the base portion respectively contact the bottom wall and the receiving portion. ### Claim 13 (depends on 12) The electronic device of claim 12, wherein the each of the blocking members further comprises a resisting portion extending from the base portion, the resisting portion comprises a resisting surface and an end surface connected to the resisting surface, the resisting surface contacts the sidewall, and the end surface contacts the main body. ### Claim 14 (depends on 12) The electronic device of claim 12, wherein the support portion defines a guiding groove, the resisting portion is slidably received in the guiding groove. ### Claim 15 (depends on 10) The electronic device of claim 10, wherein one end of the at least one elastic member is connected to the bottom wall, and another end of the at least one elastic member is connected to each of the two blocking members. ### Claim 16 (depends on 10) The electronic device of claim 10, wherein the at least one elastic member is a bent elastic sheet or a spring. ### Claim 17 (depends on 10) The electronic device of claim 10, wherein each of the two blocking members is rotatably mounted on the bottom housing, the at least one elastic member interconnects each of the two blocking members such that the two blocking members are pulled toward each other by the at least one elastic member. ### Claim 18 (depends on 17) The electronic device of claim 17, wherein the at least one elastic member is an tension spring.