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.

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.

An apparatus for selectively bracing and squaring opposite covers of a notebook includes a portion associated with an inner surface of one notebook cover and a connector associated with an inner surface of an opposite cover. When the connector and unfolded brace are attached to one another, the notebook is held in a generally square configuration wherein the opposing covers are disposed generally parallel to one another.

An apparatus for selectively bracing and squaring opposite covers of a notebook includes a portion associated with an inner surface of one notebook cover and a connector associated with an inner surface of an opposite cover. When the connector and unfolded brace are attached to one another, the notebook is held in a generally square configuration wherein the opposing covers are disposed generally parallel to one another.

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.