초록 ▼

A coupler or connector for joining bars, for example reinforcing bars, including an elongate rod member adapted to be inserted into a tubular sleeve member. The rod and sleeve members each have one or more transverse holes which align when the rod member is inserted into the sleeve member. In operat

A coupler or connector for joining bars, for example reinforcing bars, including an elongate rod member adapted to be inserted into a tubular sleeve member. The rod and sleeve members each have one or more transverse holes which align when the rod member is inserted into the sleeve member. In operational use, the rod and sleeve members are attached to the free ends of the bars to be connected. One or more transverse pins are then driven into the holes which are aligned in order to lock the rod and sleeve member together thereby connecting the bars. The pins can be spring loaded. There can be a plastic sleeve adapted to retain the pins in position. The plastic sleeve is slid off during assembly to allow the pins to engage the holes in the sleeve member(s).

대표청구항 ▼

1. A concrete encased coupler joining a first bar to a second bar, the coupler comprising: at least one tubular sleeve member having at least one open end;at least one elongate rod member having an insertion end adapted to be inserted into the open end tubular sleeve member;wherein the first bar and

1. A concrete encased coupler joining a first bar to a second bar, the coupler comprising: at least one tubular sleeve member having at least one open end;at least one elongate rod member having an insertion end adapted to be inserted into the open end tubular sleeve member;wherein the first bar and the second bar are attached to respective ends of the coupler, with the first bar attached to a member selected from the group consisting of said at least one tubular sleeve member and said at least one elongate rod member and the second bar attached to a member selected from the group consisting of said at least one tubular sleeve member and said at least one elongate rod member;the rod and sleeve members each having at least one transverse hole, which holes align when the rod member is inserted into the sleeve member;the rod member comprising one or more transverse spring loaded pin assemblies inserted in the transverse holes in the rod member, each such transverse hole in the rod member having a narrower diameter neck section adjacent one open end thereof defining a shoulder at its inner end, each pin assembly comprising a button having an enlarged base portion, the button extending through the neck section to the one open end with the shoulder abutting the base portion to prevent the button falling out of the transverse hole from the one open end, each pin assembly further comprising a spring member in the transverse holes biasing the base portion against the shoulder, and a locking member inserted into the other open end of the transverse hole to prevent the button from falling out the other open end, whereby the rod member, can be preloaded with a pin assembly in each of its transverse holes without the buttons falling out of either open end of its respective transverse holes, each pin assembly adapted to have its buttons extend radially outward from the rod member at the one open end and pass through the one or more aligned holes of the sleeve member when the rod member is inserted into the sleeve member. 2. The coupler of claim 1, wherein: the button is round and the transverse holes in the rod member and the sleeve member are circular. 3. The coupler of claim 1, wherein: the base portion of the button has a recess for accommodating receipt of the spring. 4. The coupler of claim 1, wherein: there are two through holes in each member, both sets being coaxial with each other, and the pin assemblies in each coaxial through hole is loaded in the opposite direction from the other. 5. The coupler of claim 1, wherein: the at least one sleeve member is externally configured or patterned to grip the surrounding concrete. 6. A coupler for joining a first bar to a second bar, the coupler comprising: at least one tubular sleeve member having at least one open end;at least one elongate rod member having an insertion end adapted to be inserted into the open end of the tubular sleeve member;wherein the first bar and the second bar are attachable to respective ends of the coupler, with the first bar attachable to a member selected from the group consisting of said at least one tubular sleeve member and said at least one elongate rod member and the second bar attachable to a member selected from the group consisting of said at least one tubular sleeve member and said at least one elongate rod member;the rod and sleeve members each having one or more transverse holes, which holes align when the rod member is inserted into the sleeve member;the rod member comprising at least one transverse spring loaded pin assemblies inserted in the transverse holes in the rod member, each pin adapted to extend radially outward from the rod member and pass through the at least one aligned holes of the sleeve member when the rod member is inserted into the sleeve member;and a tube having a diameter substantially similar to a diameter of the sleeve member, wherein the coupler is movable between:an inspection configuration, in which the rod member and sleeve member are disengaged and the tube substantially surrounds the rod member and radially constrains the pins, anda locked configuration, in which the tube is abutted against the open end of the sleeve member and the insertion end of the rod member is pushed into the sleeve member such that the tube is slidingly disengaged from the pins of the rod member in a direction towards the second bar to allow the pins to extend radially outward into the aligned holes of the sleeve member. 7. The coupler of claim 6, wherein: the spring loaded pin assemblies are inserted in the transverse holes in the rod member, each such transverse hole in the rod member having a narrower diameter neck section adjacent one open end thereof defining a shoulder at its inner end, each pin assembly comprising a button having an enlarged base portion, the button extending through the neck section to the one open end with the shoulder abutting the base portion to prevent the button falling out of the transverse hole from the one open end, each pin assembly further comprising a spring member in the transverse holes biasing the base portion against the shoulder, and a locking member inserted into the other open end of the transverse hole to prevent the button from falling out the other open end, whereby the rod member, can be preloaded with a pin assembly in each of its transverse holes without the buttons falling out of either open end of its respective transverse holes, each pin assembly adapted to have its buttons extend radially outward from the rod member at the one open end and pass through the at least one aligned holes of the sleeve member when the rod member is inserted into the sleeve member. 8. The coupler of claim 7, wherein: the button is round and the transverse holes in the rod member and the sleeve member are circular. 9. The coupler of claim 7, wherein: the base portion of the button has a recess for accommodating receipt of the spring. 10. The coupler of claims 7, wherein: there are two through holes in each member, both sets being coaxial with each other, and the pin assemblies in each coaxial through hole is loaded in the opposite direction from the other. 11. The coupler of claim 6, wherein: the at least one sleeve member is externally configured or patterned to grip the surrounding concrete.