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.

An example binder apparatus is disclosed. An example binder apparatus includes a housing having a first side surface, a second side surface, and an inner central surface extending between the first side surface and the second side surface. The example binder apparatus also includes a first carrier rail including a first longitudinal edge and a second longitudinal edge, the first carrier rail including a first tab to extend away from the inner central surface of the housing, the first longitudinal edge disposed adjacent the first side surface of the housing. The example binder apparatus also includes a second carrier rail including a third longitudinal edge and a fourth longitudinal edge, the second carrier rail including a second tab to extend away from the inner central surface of the housing, the third longitudinal edge disposed adjacent the second side surface of the housing, the second longitudinal edge hingably engaging the fourth longitudinal edge. In addition, the example binder apparatus includes a slider including a locking block extending therefrom, the locking block disposed in a space between the first tab and the second tab when the binder apparatus is in a closed position and the locking block is disposed outside of the space between the first tab and the second tab when the binder apparatus is in an open position.

An example binder apparatus is disclosed. An example binder apparatus includes a housing having a first side surface, a second side surface, and an inner central surface extending between the first side surface and the second side surface. The example binder apparatus also includes a first carrier rail including a first longitudinal edge and a second longitudinal edge, the first carrier rail including a first tab to extend away from the inner central surface of the housing, the first longitudinal edge disposed adjacent the first side surface of the housing. The example binder apparatus also includes a second carrier rail including a third longitudinal edge and a fourth longitudinal edge, the second carrier rail including a second tab to extend away from the inner central surface of the housing, the third longitudinal edge disposed adjacent the second side surface of the housing, the second longitudinal edge hingably engaging the fourth longitudinal edge. In addition, the example binder apparatus includes a slider including a locking block extending therefrom, the locking block disposed in a space between the first tab and the second tab when the binder apparatus is in a closed position and the locking block is disposed outside of the space between the first tab and the second tab when the binder apparatus is in an open position.

The present invention provides a single-detent binder for holding loose-leaf paper sheets, which mainly includes a housing, one pair of symmetrically elongated baseplates, ring shaped components, a control component, and a pull rod. 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, embodiments of the present invention disclose a single-detent binder with the control component constructed in a way to improve the durability of the internal components.

The present invention provides a single-detent binder for holding loose-leaf paper sheets, which mainly includes a housing, one pair of symmetrically elongated baseplates, ring shaped components, a control component, and a pull rod. 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, embodiments of the present invention disclose a single-detent binder with the control component constructed in a way to improve the durability of the internal components.

A method for assembling a single-detent binder includes assembling ring shaped components and first and second baseplates to a housing. The first and second baseplates are longitudinally adjacent and parallelly arranged and connected to each other. The first and second baseplates include adjacent longitudinal edges and non-adjacent longitudinal edges. The first and second baseplates are so assembled as to pivot around the adjacent longitudinal edges in order to open or close the ring shaped components. The ring shaped components each include two half ring shaped elements. The half ring shaped elements each are fixed on the first and second baseplates and pass through the housing. The half ring shaped elements occlude to form a closed ring, and the half ring shaped elements disjoin to form an opened ring. The method further includes assembling the control component to the housing, rotatively connecting at least one rotary locking piece to a pull rod, rotatively connecting the rotary locking piece to one of the first and second baseplates, and operatively connecting the pull rod to the control component. The control component includes a handle, which enables the control component to rotate relative to the housing. Assembling the ring shaped components and the first and second baseplates to the housing are performed simultaneously with rotatively connecting the rotary locking piece to the pull rod.

A method for assembling a single-detent binder includes assembling ring shaped components and first and second baseplates to a housing. The first and second baseplates are longitudinally adjacent and parallelly arranged and connected to each other. The first and second baseplates include adjacent longitudinal edges and non-adjacent longitudinal edges. The first and second baseplates are so assembled as to pivot around the adjacent longitudinal edges in order to open or close the ring shaped components. The ring shaped components each include two half ring shaped elements. The half ring shaped elements each are fixed on the first and second baseplates and pass through the housing. The half ring shaped elements occlude to form a closed ring, and the half ring shaped elements disjoin to form an opened ring. The method further includes assembling the control component to the housing, rotatively connecting at least one rotary locking piece to a pull rod, rotatively connecting the rotary locking piece to one of the first and second baseplates, and operatively connecting the pull rod to the control component. The control component includes a handle, which enables the control component to rotate relative to the housing. Assembling the ring shaped components and the first and second baseplates to the housing are performed simultaneously with rotatively connecting the rotary locking piece to the pull rod.

A ring binder mechanism for holding loose-leaf pages includes a housing and a plurality of rings for holding the loose-leaf pages. Each ring has a first ring member and a second ring member. The first ring member is movable relative to the housing and the second ring member between a closed position and an opened position. In the closed position, the first and second ring members form a substantially continuous, closed loop for allowing loose-leaf pages retained by the rings to be moved along the rings from one ring member to the other. In the opened position, the first and second ring members form a discontinuous, open loop for adding or removing loose-leaf pages. The first and second ring members are generally mirror images of each other. Each of the ring members has a length and at least two different radii of curvature along the length of the rings.

A ring binder mechanism for holding loose-leaf pages includes a housing and a plurality of rings for holding the loose-leaf pages. Each ring has a first ring member and a second ring member. The first ring member is movable relative to the housing and the second ring member between a closed position and an opened position. In the closed position, the first and second ring members form a substantially continuous, closed loop for allowing loose-leaf pages retained by the rings to be moved along the rings from one ring member to the other. In the opened position, the first and second ring members form a discontinuous, open loop for adding or removing loose-leaf pages. The first and second ring members are generally mirror images of each other. Each of the ring members has a length and at least two different radii of curvature along the length of the rings.