# US 8,784,029 B2 · Insertion type furniture connector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,784,029 B2 - Document ID: US8784029B2 - Status: Granted - Kind: B2 - Application number: 13/320,240 - Filed: 2010-05-11 - Published: 2012-03-08 - Granted: 2014-07-22 - Earliest claimed: 2009-05-12 - Assignees: Lei Cao; Jie Liu; Minsheng Liu; Yuqi Liu - Applicants: Minsheng Liu; Yuqi Liu - Inventors: Minsheng Liu; Yuqi Liu - Web page: https://patentgrep.com/patent/US8784029B2 ## CPC - F16B 12/26: using snap-action elements - F16B 12/24: using separate pins, dowels, or the like - F16B 19/1081: {fastened by a drive-pin (F16B19/109 takes precedence)} - Y10T 24/4501: Quick connect or release [e.g., spring and detent] - Y10T 403/4602: Corner joint - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention relates to a furniture connector, in particular, to an insertion type furniture connector that includes a female buckle, a middle buckle and a sub-buckle. The female buckle is a hollow cylinder whose inner wall is formed with a positioning ring. The middle buckle is a hollow rod having an insertion hole in its axis direction, the rod wall of the front end portion of the middle buckle is provided with axis direction slits, and the exterior rim of the front end portion of the middle buckle engages with the inner wall of the female buckle having the positioning ring. The sub-buckle is a rod-shaped body which can be inserted into the insertion hole and which has a diameter matching with that of the insertion hole. Furniture panel can be connected by inserting the middle buckle into the female buckle and inserting the sub-buckle into the middle buckle without using a tool, facilitating the assembly of the furniture. The connection of the connector is stable due to the positioning of the middle buckle by the positioning ring. ## Claims ### Claim 1 An insertion and extrusion type furniture connector, comprising: a female buckle; a middle buckle; and a sub-buckle, wherein said female buckle has a buckle hole with a central axis, whose wall is formed with a positioning ring; wherein said middle buckle is a hollow rod having an insertion hole in its axis direction, the rod wall of the front end portion of said middle buckle is provided with axis direction slits, and the front end portion of said middle buckle has an exterior rim engaged with said buckle hole; wherein said sub-buckle is a rod-shaped body which is inserted into the insertion hole and which has a diameter matching with that of the insertion hole; wherein said female buckle is cylinder-shaped, and the female buckle has a central axis perpendicular to that of said buckle hole and provides a plane perpendicular to the central axis of said buckle hole in the position of oppositing said middle buckle; and wherein the top surface of said female buckle is a flat surface, where has a concave adjusting groove. ### Claim 2 (depends on 1) An insertion and extrusion type furniture connector according to claim 1, wherein the rear end portion of said middle buckle is provided with a boss extended along its radial direction. ### Claim 3 (depends on 2) An insertion and extrusion type furniture connector according to claim 2, wherein the rear end portion of said sub-buckle has step-shaped bottom panel, the front face of said bottom panel is matched with the rear face of said boss. ### Claim 4 (depends on 3) An insertion and extrusion type furniture connector according to claim 3, wherein the exterior rim of said boss has protective wall backward, and the height of said protective wall is no less than the thickness of said bottom panel. ### Claim 5 (depends on 4) An insertion and extrusion type furniture connector according to claim 4, wherein the front end portion of said middle buckle is provided with a guide part which is extended axially forward and has a gradually decreasing outer diameter. ### Claim 6 (depends on 5) An insertion and extrusion type furniture connector according to claim 5, wherein the front end portion of said sub-buckle is provided with a guide part which is extended axially forward and has a gradually decreasing diameter. ### Claim 7 (depends on 1) An insertion and extrusion type furniture connector according to claim 1, wherein the rear part of said sub-buckle is engraved with occlusal strias. ### Claim 8 (depends on 7) An insertion and extrusion type furniture connector according to claim 7, wherein the outer wall of said female buckle has pawls. ### Claim 9 A panel assembly, comprising: a first panel having a first mounting hole; a second panel having a second mounting hole; and, an insertion type furniture connector for connecting said first panel and said second panel; wherein said insertion type furniture connector includes a female buckle, a middle buckle, and a sub-buckle, said female buckle is inserted into said first mounting hole of the said first panel, and said female buckle has a buckle hole, whose wall is formed with a positioning ring; wherein said middle buckle is a hollow rod having an insertion hole in its axis direction, the rod wall of the front end portion of said middle buckle is provided with axis direction slits, the front end portion of said middle buckle runs through said second mounting hole of said second panel and enters into said buckle hole of said female buckle, and the front end portion of said middle buckle has an exterior rim engaged with the wall of said buckle hole having said positioning ring; wherein said sub-buckle is a rod-shaped body, which is inserted into said insertion hole of said middle buckle, and which has a diameter matching with that of said insertion hole; and wherein said female buckle is provided with a sealing cover to seal said buckle hole on its inserting end portion where it is inserted into the bottom of said mounting hole; wherein the rear end portion of said middle buckle has a boss along its radial direction, said second panel has a recess cut on the side face where the rear end portion of said middle buckle lies, said boss is held in said recess cut; wherein the side where the rear face of said female buckle lies in the side of the orifice of said mounting hole is flush with the surface of said first panel; wherein the distance between the rear face of said female buckle and said boss of said middle buckle is equal to the thickness of said second panel. ### Claim 10 (depends on 9) A panel assembly according to claim 9, wherein the distance between the rear face of said female buckle and the rear face of said middle buckle is equal to the thickness of said second panel. ### Claim 11 (depends on 9) A panel assembly according to claim 9, wherein the outer wall of said sub-buckle, which part is inserted into said middle buckle, has a bump. ### Claim 12 (depends on 9) A panel assembly according to claim 9, wherein the outer wall of said middle buckle has a protruding portion. ### Claim 13 (depends on 9) A panel assembly according to claim 9, wherein the outer wall of said female buckle has pawls. ### Claim 14 An insertion type furniture connector, comprising: a female buckle; a middle buckle; and a sub-buckle, wherein said female buckle is a hollow cylinder whose inner wall is formed with a positioning ring; wherein said middle buckle is a hollow rod having an insertion hole in its axis direction, the rod wall of the front end portion of the middle buckle is provided with axis direction slits, and the exterior rim of the front end portion of the middle buckle engages with the inner wall of the female buckle having the positioning ring; wherein said sub-buckle is a rod-shaped body which can be inserted into the insertion hole and which has a diameter matching with that of the insertion hole; wherein the rear end portion of said middle buckle is provided with a boss extended along its radial direction; wherein the rear end portion of said sub-buckle has step-shaped bottom panel, the front face of said bottom panel is matched with the rear face of said boss; wherein the outer margin of said boss has protective wall backward, the height of said protective wall is not less than the thickness of said bottom panel; and wherein the front end portion of said middle buckle is provided with a guide part which is extended axially forward and has a gradually decreasing outer diameter. ### Claim 15 (depends on 14) An insertion type furniture connector according to claim 14, wherein the front end portion of said sub-buckle is provided with a guide part which is extended axially forward and has a gradually decreasing diameter. ### Claim 16 (depends on 15) An insertion type furniture connector according to claim 15, wherein the outer wall of said female buckle has pawls. ### Claim 17 (depends on 16) An insertion type furniture connector according to claim 16, wherein the rear end portion of said female buckle has raised position-limit step along its axis. ### Claim 18 (depends on 17) An insertion type furniture connector according to claim 17, wherein the rear part of said sub-buckle is engraved with occlusal strias. ### Claim 19 (depends on 18) An insertion type furniture connector according to claim 18, wherein said positioning ring is convex towards the axis of said female buckle and is formed with convex annular shape, which has ladder-shaped sections with two beveled edges.