An open triangle made of rigid material planes each joined ninety degrees to one another and of sufficient thickness, rigidity, precision and construction for the triangle as a whole to serve as a brace for clamping, aligning, and joining workpieces, especially three workpieces at ninety degrees to one another; the opening of the triangular brace serving as a space for the operation of joining the workpieces, especially joining by means of high-heat welding but also by other means of joining, like drilling and fastening with bolts; the triangular brace being constructed of one piece, or a plurality of pieces in which one plane or all planes of the brace are removable and re-attachable, or rotatable in and out of position, by means of screws, bolts, pins, interlocking tongue-and-groove, magnets, axle for rotation, or other secure means.

An one-piece corner connector for connecting two frame bars at right angles to one another includes a right-angle bracket having two angle legs, an intermediate plate, and two U-profile connecting pieces at right angles, having a middle leg and two side legs for insertion into the plug-in openings in the frame bars which are open at one end. The middle legs of the U-profile connecting pieces are formed on and run with their outer side parallel to the intermediate plate. The one outer side legs of the U-profile connecting pieces are each formed on one of the angle legs and run with their outer side parallel to the outer side of the angle leg. The other inner side legs of the U-profile connecting pieces are connected to one another by means of a wall element which is angled from the intermediate plate.

An one-piece corner connector for connecting two frame bars at right angles to one another includes a right-angle bracket having two angle legs, an intermediate plate, and two U-profile connecting pieces at right angles, having a middle leg and two side legs for insertion into the plug-in openings in the frame bars which are open at one end. The middle legs of the U-profile connecting pieces are formed on and run with their outer side parallel to the intermediate plate. The one outer side legs of the U-profile connecting pieces are each formed on one of the angle legs and run with their outer side parallel to the outer side of the angle leg. The other inner side legs of the U-profile connecting pieces are connected to one another by means of a wall element which is angled from the intermediate plate.

A dovetail-type embedded connecting piece and an office desk are provided. The dovetail tenon type embedded connecting piece includes a dovetail groove and a dovetail tenon in a mortise-tenon connection with the dovetail groove. The dovetail groove includes a main plate and an auxiliary plate detachably connected with the main plate. A first clamping groove and the dovetail groove are formed by the main board and the auxiliary plate in use. The dovetail tenon includes a left side plate and a right side plate detachably connected to the left side plate, and in a use state, a second clamping groove is formed by the left side plate and the right side plate.

A dovetail-type embedded connecting piece and an office desk are provided. The dovetail tenon type embedded connecting piece includes a dovetail groove and a dovetail tenon in a mortise-tenon connection with the dovetail groove. The dovetail groove includes a main plate and an auxiliary plate detachably connected with the main plate. A first clamping groove and the dovetail groove are formed by the main board and the auxiliary plate in use. The dovetail tenon includes a left side plate and a right side plate detachably connected to the left side plate, and in a use state, a second clamping groove is formed by the left side plate and the right side plate.

A furniture assembly can include a tabletop with removable legs. The removable legs can be attached to the tabletop with a socket having a threaded member mounted in a non-fixed and anti-rotation registration at the bottom of the socket. The legs can be mounted to the socket by insertion and turning for threaded engagement. The floating engagement mechanism can allow the threaded fastener member to move during installation to provide for enhanced alignability between the leg and the threaded fastener member.

A quick assembly table and an installation method is disclosed. The table includes a tabletop and legs. The legs are evenly arranged at a bottom of the tabletop, a sliding slot is disposed at the bottom of the tabletop, the legs slide along and fit into the sliding slot, the legs are connected by an annular beam in between, the annular beam is fitted with a locking screw, and the locking screw expands or shrinks the annular beam to push the legs to slide along the sliding slot. The tabletop and legs are installed in a slide-and-fit manner without screws, and are convenient to assemble and disassemble. In addition, relative locations between all the legs and the tabletop can be adjusted synchronously through expansion or shrinkage of the annular beam, making adjustment flexible and convenient.

A quick assembly table and an installation method is disclosed. The table includes a tabletop and legs. The legs are evenly arranged at a bottom of the tabletop, a sliding slot is disposed at the bottom of the tabletop, the legs slide along and fit into the sliding slot, the legs are connected by an annular beam in between, the annular beam is fitted with a locking screw, and the locking screw expands or shrinks the annular beam to push the legs to slide along the sliding slot. The tabletop and legs are installed in a slide-and-fit manner without screws, and are convenient to assemble and disassemble. In addition, relative locations between all the legs and the tabletop can be adjusted synchronously through expansion or shrinkage of the annular beam, making adjustment flexible and convenient.

A connection assembly for securing a support member to a work surface (e.g., a table leg to a table top) that includes an attachment plate, a retainer, and a fitting. The attachment plate connects to a bottom surface of the table top, the fitting connects to an upper end of the table leg, and the retainer exerts a force on the fitting that helps absorb or take up tolerances within the connection assembly so that the support member is securely connected to the work surface. In one example, the retainer is a resilient component that is compressed between the fitting and a receiving portion of the attachment plate to help take up tolerances within the connection assembly, whereas in another example the retainer is a rotatable component that exerts a force against the fitting to address tolerances and the like. A method for providing a connection assembly is also disclosed.

A connection assembly for securing a support member to a work surface (e.g., a table leg to a table top) that includes an attachment plate, a retainer, and a fitting. The attachment plate connects to a bottom surface of the table top, the fitting connects to an upper end of the table leg, and the retainer exerts a force on the fitting that helps absorb or take up tolerances within the connection assembly so that the support member is securely connected to the work surface. In one example, the retainer is a resilient component that is compressed between the fitting and a receiving portion of the attachment plate to help take up tolerances within the connection assembly, whereas in another example the retainer is a rotatable component that exerts a force against the fitting to address tolerances and the like. A method for providing a connection assembly is also disclosed.