A multi-ring binder includes a positioning lock pin, a movable central spindle, a first bracket, a second bracket and a C-ring. The movable central spindle is formed by a plurality of cylindrical bodies and a plurality of rectangular bodies staggered, and the top of the movable central spindle is connected to the positioning lock pin and the surface of the rectangular body next to the top has a first positioning groove and a second positioning groove. The first bracket has first half-rings arranged equidistant from each other, and first hollow bodies arranged equidistant from each other. The second bracket is complementary and symmetrical with the first bracket, and has second half-rings arranged equidistant from each other, and second hollow bodies arranged on equidistant from each other.

A multi-ring binder includes a positioning lock pin, a movable central spindle, a first bracket, a second bracket and a C-ring. The movable central spindle is formed by a plurality of cylindrical bodies and a plurality of rectangular bodies staggered, and the top of the movable central spindle is connected to the positioning lock pin and the surface of the rectangular body next to the top has a first positioning groove and a second positioning groove. The first bracket has first half-rings arranged equidistant from each other, and first hollow bodies arranged equidistant from each other. The second bracket is complementary and symmetrical with the first bracket, and has second half-rings arranged equidistant from each other, and second hollow bodies arranged on equidistant from each other.

A single-detent binder for a file folder has a housing, one pair of baseplates, ring shaped components, a control component, a pull rod, rotary locking pieces and an intermediate junction component. The control component, intermediate junction component, pull rod and rotary locking pieces are connected in series. When the control component rotates, the rotary locking pieces are triggered to rotate in the trough of the first baseplate based on the mechanical principle of connecting rod, thus performing the locking/unlocking function. When the binder is closed, the baffle plates on the second baseplate hinder the rotary locking pieces from rotation, thus generating a clamping force. After the baffle plates and rotary locking pieces work jointly to close the binder, the ring shaped components generate a scrambling force, thus enhancing the locking effect and preventing the single-detent binder from opening unexpectedly.

A single-detent binder for a file folder has a housing, one pair of baseplates, ring shaped components, a control component, a pull rod, rotary locking pieces and an intermediate junction component. The control component, intermediate junction component, pull rod and rotary locking pieces are connected in series. When the control component rotates, the rotary locking pieces are triggered to rotate in the trough of the first baseplate based on the mechanical principle of connecting rod, thus performing the locking/unlocking function. When the binder is closed, the baffle plates on the second baseplate hinder the rotary locking pieces from rotation, thus generating a clamping force. After the baffle plates and rotary locking pieces work jointly to close the binder, the ring shaped components generate a scrambling force, thus enhancing the locking effect and preventing the single-detent binder from opening unexpectedly.

A single-detent binder for holding loose-leaf paper sheets is provided. The binder mainly includes a housing, one pair of symmetrically elongated baseplates, ring shaped components, a control component, a press cap, an intermediate junction component, a pull rod and rotary locking pieces. The control component is operable to move the rings for performing the locking and unlocking function. As the handle forms an essential and irreplaceable part of the whole mechanism, disclosed are embodiments of a single-detent binder with the control component constructed in away to improve the durability of the internal components.

A single-detent binder for holding loose-leaf paper sheets is provided. The binder mainly includes a housing, one pair of symmetrically elongated baseplates, ring shaped components, a control component, a press cap, an intermediate junction component, a pull rod and rotary locking pieces. The control component is operable to move the rings for performing the locking and unlocking function. As the handle forms an essential and irreplaceable part of the whole mechanism, disclosed are embodiments of a single-detent binder with the control component constructed in away to improve the durability of the internal components.

A locking ring metal (10) includes binder rings (12, 14, 16) each formed by a pair of complementary shaped binder ring halves. Each ring half has an end attached to a frame (18, 20). The frames are movable relative to each other to open and close the binder rings. The frames are installed in housing (22) at one end of which a trigger (11) is mounted. A travel bar (34) installed within the housing above the frames and not connected to the trigger includes blocking elements (50) which, when in position, prevent movement of the frames to lock the binder rings in their closed position. A coil spring (48) attached to the travel bar and housing biases the travel bar in the direction to open the binder rings.

A locking ring metal (10) includes binder rings (12, 14, 16) each formed by a pair of complementary shaped binder ring halves. Each ring half has an end attached to a frame (18, 20). The frames are movable relative to each other to open and close the binder rings. The frames are installed in housing (22) at one end of which a trigger (11) is mounted. A travel bar (34) installed within the housing above the frames and not connected to the trigger includes blocking elements (50) which, when in position, prevent movement of the frames to lock the binder rings in their closed position. A coil spring (48) attached to the travel bar and housing biases the travel bar in the direction to open the binder rings.

A ring binder has an elongate body and rings including ring members moveable between closed position and open positions. A retaining system selectively and releasably holds the ring members of at least one ring in the closed position. The retaining system includes interlocking formations adjacent ends of the ring members that are moveable between retaining and non-retaining positions. The first interlocking formation includes a recessed region and a projection extending upwardly. The second interlocking formation includes a vaulted region and a projection extending downwardly. The first projection is received in the vaulted region and the second projection is received in the recessed region when the interlocking formations are in the retaining position. The interlocking formations are configured so that movement of the interlocking formations relative to one another in the direction of a longitudinal axis of the body is blocked when the interlocking formations are in the retaining position.

A ring binder has an elongate body and rings including ring members moveable between closed position and open positions. A retaining system selectively and releasably holds the ring members of at least one ring in the closed position. The retaining system includes interlocking formations adjacent ends of the ring members that are moveable between retaining and non-retaining positions. The first interlocking formation includes a recessed region and a projection extending upwardly. The second interlocking formation includes a vaulted region and a projection extending downwardly. The first projection is received in the vaulted region and the second projection is received in the recessed region when the interlocking formations are in the retaining position. The interlocking formations are configured so that movement of the interlocking formations relative to one another in the direction of a longitudinal axis of the body is blocked when the interlocking formations are in the retaining position.