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US 6,305,873 B1Granted
Jointing construction
AssigneesObayashi Corporation, Ishikawajima Construction Materials Co., Ltd.
InventorsEiji Tauchi, Akihiko Nakano, Kenta Matsubara, Hiroki Someya, Shuuichi Nishimura, Susumu Okayama, Toshio Kobayashi
Life of this patent
Estimating the term…
Abstract
Structural members 1, 21 are connected by way of a connecting rod 3 which is attached to one structural member 1 and projects outward from connecting surface 2 of structural member 1 in the direction of other structural member 21, and a connector 23 which is attached to other structural member 21 and has a plurality of wedges 25 which engage with connecting rod 3 stopping it so that it cannot slip out. Connecting rod 3 is attached so as to be moveable in a direction parallel to connecting surface 2.
Claims8
A wedge production method for producing wedges for a connector provided with:
- a tapered sleeve, the inner circumferential surface of which has a gradually widening diameter in the direction of insertion of said connecting rod;
- a plurality of wedges that are disposed in a circle within the sleeve to form an insertion fixing hole at their mutual center, this plurality of wedges being disposed so as to be freely moveable along the longitudinal direction of the sleeve with their outer circumferential surfaces in contact with the inner circumferential surface of the sleeve;
- and
- an elastic member for biasing said wedges toward the rear direction of insertion of the connecting rod which is inserted into said insertion fixing hole;
- wherein,
- a plurality of intermediate work pieces, which are flabellate in cross-section, are produced and then placed in a forging machine disposed in a circle with their lateral surfaces facing one another, and the intermediate work pieces are simultaneously forge-molded into wedges by the forging machine to produce the wedges which form said connector.
3 more elements
A connector attaching structure for using an attaching member to attach to a mold-plate a connector provided with:
- a tapered sleeve, the inner circumferential surface of which has a gradually widening diameter in the direction of insertion of a connecting rod;
- a plurality of wedges that are disposed in a circle within the sleeve to form an insertion fixing hole at their mutual center, this plurality of wedges being disposed so as to be freely moveable along the longitudinal direction of said sleeve with their outer circumferential surfaces in contact with the inner circumferential surface of the sleeve;
- and
- an elastic member for biasing said wedges toward the rear direction of insertion of said connecting rod which is inserted into said insertion fixing hole;
- said attaching member being provided with:
- a cylindrical pin which passes through the attachment hole formed in said mold-plate, to insert into and engage with said insertion fixing hole of said connector disposed at the inner surface of said mold-plate;
- a stopping member provided to said cylindrical pin, which is stopped by the outer surface of said mold-plate;
- an elastically deformable elastic member which is provided to the end of said cylindrical pin on said connector side;
- an attachment bolt which passes through said elastic member and said cylindrical pin, the head of which is stopped by said elastic member;
- and
- an attachment nut which screws onto the end of said attachment bolt which projects outward from the end of said cylindrical pin;
- wherein,
- said attaching member attaches said connector to said mold-plate by screwing on said attachment nut of said attaching member, causing said elastic member to be compressed so that its diameter expands.
10 more elements
A connector attaching structure for using an attaching member to attach to a mold-plate a connector provided with:
- a tapered sleeve, the inner circumferential surface of which has a gradually widening diameter in the direction of insertion of said connecting rod;
- a plurality of wedges that are disposed in a circle within said sleeve to form an insertion fixing hole at their mutual center, this plurality of wedges being disposed so as to be freely moveable along the longitudinal direction of said sleeve with their outer circumferential surfaces in contact with the inner circumferential surface of said sleeve;
- and
- an elastic member for biasing said wedges toward the rear direction of insertion of the connecting rod which is inserted into said insertion fixing hole;
- said attaching member being provided with:
- an engaging portion that inserts into and engages with the attaching hole of said mold-plate;
- a stopping member provided to said engaging portion, which is stopped by the outer surface of said mold-plate;
- a plurality of wide-diameter pieces disposed in opposition to one another at the open end of the inner circumferential wall of the sleeve of said connector, sandwiching the axis of said connector therebetween;
- a biasing means for biasing said plurality of wide-diameter pieces along said axis;
- a wide-diameter piece manipulating member provided with a tapered surface disposed in between said plurality of wide-diameter pieces, for mutually separating said plurality of wide-diameter pieces accompanying relative movement toward said attachment hole, and mutually bringing together said wide-diameter pieces under the biasing force of said biasing means accompanying relative movement in the opposite direction, and an interlocking member for interlocking with said wide-diameter pieces when they have been brought mutually close together and moving them in the opposite direction;
- an attachment bolt which passes through said wide-diameter piece manipulating member, said engaging portion and said stopping member, the head of which is stopped by said wide-diameter piece manipulating member;
- and
- an attachment nut which screws onto the end of said attachment bolt which projects outward from the end of said stopping member;
- wherein,
- said attaching member attaches said connector to said mold-plate by screwing on said attachment nut of said attaching member, causing said wide-diameter pieces to be compressed in the outer circumferential direction by said wide-diameter manipulating member.
12 more elements
A connector attaching structure for attaching to a mold-plate a connector provided with:
- a tapered sleeve, the inner circumferential surface of which has a gradually widening diameter in the direction of insertion of said connecting rod;
- a plurality of wedges that are disposed in a circle within said sleeve to form an insertion fixing hole at their mutual center, said plurality of wedges being disposed so as to be freely moveable along the longitudinal direction of said sleeve with their outer circumferential surfaces in contact with the inner circumferential surface of said sleeve;
- and an elastic member for biasing said wedges toward the rear direction of insertion of the connecting rod which is inserted into said insertion fixing hole;
- wherein,
- a retainer having a screw hole is provided in between said wedges and said elastic member of said connector, with the screw hole communicating with said insertion fixing hole;
- and
- said connector is attached to said mold-plate by inserting the attachment bolt which has been inserted through the attachment hole of said mold-plate into said insertion fixing hole, and screwing said attachment bolt into the screw hole of said retainer.
4 more elements
A connector attaching structure for attaching to a mold-plate a connector provided with:
- a tapered sleeve, the inner circumferential surface of which has a gradually widening diameter in the direction of insertion of said connecting rod;
- a plurality of wedges that are disposed in a circle within said sleeve to form an insertion fixing hole at their mutual center, this plurality of wedges being disposed so as to be freely moveable along the longitudinal direction of said sleeve with their outer circumferential surfaces in contact with the inner circumferential surface of said sleeve;
- and
- an elastic member for biasing said wedges toward the rear direction of insertion of the connecting rod which is inserted into said insertion fixing hole;
- wherein,
- a retainer is provided in between said wedges and said elastic member of said connector, said retainer being provided with a nut having a screw hole;
- and
- said connector is attached to said mold-plate by inserting the attachment bolt through the attachment hole of said mold-plate into said insertion fixing hole, and screwing said nut into said screw hole.
5 more elements
Dependencies are inferred from the claim text.