This invention relates to a ring binder mechanism for retaining loose-leaf pages, and in particular to an improved ring binder mechanism for opening and closing ring members and for locking closed ring members together.
A ring binder mechanism retains loose-leaf pages, such as hole-punched pages, in a file or notebook. It has ring members for retaining the pages. The ring members may be selectively opened to add or remove pages or closed to retain pages while allowing the pages to be moved along the ring members. The ring members mount on two adjacent hinge plates that join together about a pivot axis. An elongate housing loosely supports the hinge plates within the housing and holds the hinge plates together so they may pivot relative to the housing.
The undeformed housing is slightly narrower than the joined hinge plates when the hinge plates are in a coplanar position (180E). So as the hinge plates pivot through this position, they deform the resilient housing and cause a spring force in the housing that urges the hinge plates to pivot away from the coplanar position, either opening or closing the ring members. Thus, when the ring members are closed the spring force resists hinge plate movement and clamps the ring members together. Similarly, when the ring members are open, the spring force holds them apart. An operator may typically overcome this force by manually pulling the ring members apart or pushing them together. Levers may also be provided on one or both ends of the housing for moving the ring members between the open and closed positions. But a drawback to these known ring binder mechanisms is that when the ring members are closed, they do not positively lock together. So if the mechanism is accidentally dropped, the ring members may unintentionally open.
Some ring binder mechanisms have been modified to include locking structure to block the hinge plates from pivoting when the ring members are closed. The blocking structure positively locks the closed ring members together, preventing them from unintentionally opening if the ring mechanism is accidentally dropped. The blocking structure also allows the housing spring force to be reduced because the strong spring force is not required to clamp the closed ring members together. Thus, less operator force is required to open and close the ring members of these mechanisms than in traditional ring mechanisms.
Some of these ring mechanisms incorporate the locking structure onto a control slide connected to the lever. The lever moves the control slide (and its locking structure) to either block the pivoting movement of the hinge plates or allow it. But a drawback to these mechanisms is that an operator must positively move the lever after closing the ring members to position the locking structure to block the hinge plates and lock the ring members closed. Failure to do this could allow the hinge plates to inadvertently pivot and open the ring members, especially if the mechanisms are accidentally dropped.
Some locking ring binder mechanisms use springs to move the locking structure into position blocking the hinge plates when the ring members close. Examples are shown in co-owned U.S. patent application Ser. No. 10/870,801 (Cheng et al.), Ser. No. 10/905,606 (Cheng), and Ser. No. 11/027,550 (Cheng). These mechanisms employ separate springs to help lock the mechanisms.
Accordingly, there is a need for a simple ring binder mechanism that readily locks ring members together when the mechanism is closed without requiring additional spring components to do so.
A ring mechanism for holding loose-leaf pages generally comprises a housing and rings for holding the loose-leaf pages. Each ring includes a first ring member and a second ring member. At least one of the ring members is movable relative to the housing and the other ring member between a closed position and an open position. In the closed position, the two 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 open position, the two ring members form a discontinuous, open loop for adding or removing loose-leaf pages from the rings. An actuation system of the mechanism comprises first and second hinge plates supported by the housing for pivoting motion relative to the housing, and an actuator mounted on the housing for movement relative to the housing to cause the pivoting motion of the hinge plates. The at least one ring member is mounted on the first hinge plate. A travel bar is moveable by the actuator between a locked position and an unlocked position. The actuation system is adapted to move the travel bar from the locked position toward the unlocked position in response to movement of the actuator. The actuation system is further adapted to deform while moving the travel bar from the locked position toward the unlocked position to delay the pivoting motion of the hinge plates from the movement of the actuator.
Other features of the invention will be in part apparent and in part pointed out hereinafter.
Corresponding reference numbers indicate corresponding parts throughout the views of the drawings.
Referring to the drawings,
As shown in
The three rings 13 of the ring binder mechanism 1 are substantially similar and are each generally circular in shape (
As also shown in
Referring to
As shown in
As also shown in
Referring again to
The locking elements 49 of the illustrated travel bar 45 are each substantially similar in shape. As best shown in
The ring binder mechanism 1 in assembled form will now be described with reference to
As shown in
Referring to
As shown in
The ring members 23a, 23b are each mounted on upper surfaces of respective ones of the hinge plates 27a, 27b in generally opposed fashion, with the free ends 25a, 25b facing (see also,
As shown in
Operation of the ring mechanism 1 will be described with reference to
In
To unlock the ring mechanism 1 and open the ring members 23a, 23b, an operator applies force to the grip 33 of the lever 15 and pivots it counter-clockwise (as viewed in
The lever channel 41, now closed, no longer shields the tongue 37 from the pivoting movement of the grip 33 and body 35. Continued opening movement of the lever 15 causes the body 35 to conjointly pivot the tongue 37. The lever bulb 43 causes the interconnected hinge plates 27a, 27b to pivot upward over the locking elements 49 at the locking element openings 29a-c and relative to the mounting post 79a at the mounting post opening 29d. Once the hinge plates 27a, 27b pass just through the co-planar position, the housing spring force pushes them upward, opening the ring members 23a, 23b (
To close the ring members 23a, 23b and return the mechanism 1 to the locked position, an operator manually pushes the free ends 25a, 25b of the ring members together. The hinge plates 27a, 27b pivot downward, and rotate the lever tongue 37 clockwise (as viewed in
Once the hinge plates 27a, 27b clear the bottoms 53 of the locking elements 49, the tongue 37 pushes the body 35 and grip 33 to the vertical position and the travel bar 45 and locking elements move to the locked position. The ring members 23a, 23b of the ring mechanism 1 could be closed by a modified lever capable of engaging the hinge plates 27a, 27b and pivoting them downward within the scope of the invention.
It should now be apparent that the flexibility of the lever bridge 39 allows the grip 33 and body 35 of the lever 15 to move relative to the tongue 37. This moves the lever 15 between the relaxed position (
When the lever 15 pivots to open the ring members 23a, 23b, the travel bar 45 and locking elements 49 move immediately and prior to the tongue 37 and bulb 43 pivoting the hinge plates 27a, 27b upward. This lost motion caused by the open channel 41 allows the locking elements 49 to move into registration with the locking element openings 29a-c of the hinge plates 27a, 27b before the hinge plates pivot. They do not interfere with the desirable pivoting movement of the hinge plates 27a, 27b. After the locking elements 49 move into registration with the respective openings 29a-c, the channel 41 closes and the grip 33, body 35, and tongue 37 conjointly pivot to move the hinge plates 27a, 27b upward.
In addition when the ring members 23a, 23b are open and the lever 15 is relaxed, the locking elements 49 and travel bar 45 are free of forces tending to move them to the locked position. Thus, there is no tendency for the open ring members 23a, 23b to inadvertently close under the influence of the lever 15, locking elements 49, or travel bar 45 as an operator loads or removes pages from the ring members 23a, 23b.
Similarly when the ring members 23a, 23b are moved to the closed position, the lever channel 41 allows the hinge plates 27a, 27b to pivot downward over the locking elements 49 before the grip 33 and body 35 of the lever 15 push the travel bar 45 and locking elements 49 to the locked position. Here, the lost motion caused by the open channel 41 maintains a continuous engagement between the lever tongue 37 and the hinge plates 27a, 27b (via the lever bulb 43) without risk of the mechanism jamming in the open position (e.g., as may occur if the lever tongue is unable to move downward with the hinge plates because the locking elements 49 wedge against edges of the locking element openings 29a-c of the hinge plates, holding the hinge plates from further pivoting downward). The continuous engagement between the lever tongue 37 and the lower surfaces of the hinge plates 27a, 27b (via lever bulb 43) ensures that the body 35 and grip 33 of the lever 15 move fully to their vertical position when the hinge plates 27a, 27b are pivoted downward (and the ring members 23a, 23b are closed), moving the travel bar 45 and locking elements 49 fully to the locked position.
Thus, the ring binder mechanism 1 effectively retains loose-leaf pages when ring members 23a, 23b are closed, and readily prevents the closed ring members 23a, 23b from unintentionally opening. The lever 15 positions the travel bar 45 and its locking elements 49 in the locked position when the ring members 23a, 23b close, eliminating the need to manually move the lever 15 to positively lock the mechanism 1. The ring mechanism 1 incorporating the locking lever 15 requires no additional biasing components (e.g., springs) to perform the locking operation, and requires no specially formed parts to accommodate such biasing components.
Operation of the ring mechanism 201 will be described with reference to the enlarged fragmentary views of
As in the ring mechanism 1 of
In this ring mechanism 201, the unique cooperation between the lever 215, the hinge plates 227a, 227b, and the locking elements 249 allows the mechanism to operate between the closed and locked position and the open position. When opening the ring members 223a, 223b, the hinge plates 227a, 227b briefly flex upward to allow the lever 215 to pivot to move the locking elements 249 into registration with the locking element openings 229a-c of the hinge plates. The lever 215, together with the tension from the flexed hinge plates 227a, 227b and the spring force of the housing 211, then pivot the hinge plates over the locking elements 249 to open the ring members 223a, 223b. When closing the ring members 223a, 223b, the hinge plates 227a, 227b again flex to allow the plates to pivot downward over the locking elements 249 (the angled sides 255a of the locking elements 249 also aid in this operation, but are not necessary for this operation).
Components of ring binder mechanisms of the embodiments described and illustrated herein are made of a suitable rigid material, such as a metal (e.g. steel). But mechanisms having components made of a nonmetallic material, specifically including a plastic, do not depart from the scope of this invention.
When introducing elements of the ring binder mechanisms herein, the articles “a”, “an”, “the” and “said” are intended to mean that there are one or more of the elements. The terms “comprising”, “including” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements. Moreover, the use of “up” and “down” and variations of these terms is made for convenience, but does not require any particular orientation of the components.
As various changes could be made in the above without departing from the scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
This application is a continuation application of U.S. patent application Ser. No. 14/933,625, filed Nov. 5, 2015, which is a continuation of U.S. patent application Ser. No. 14/450,736, filed Aug. 4, 2014, entitled LEVER FOR A RING BINDER MECHANISM, now U.S. Pat. No. 9,180,721 on Nov. 10, 2015, and which is a continuation of U.S. application Ser. No. 12/615,469, entitled LEVER FOR A RING BINDER MECHANISM, filed Nov. 10, 2009, now U.S. Pat. No. 8,814,458, which is a continuation application of U.S. application Ser. No. 11/190,328, filed Jul. 27, 2005, entitled LEVER FOR A RING BINDER MECHANISM, now U.S. Pat. No. 7,661,899, and which claims the benefit of U.S. Provisional Application No. 60/664,125, filed Mar. 22, 2005, entitled RING BINDER MECHANISM WITH SPRING LOCK ACTUATOR, the entire contents of which are all hereby incorporated by reference.
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20170197453 A1 | Jul 2017 | US |
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60664125 | Mar 2005 | US |
Number | Date | Country | |
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Parent | 14933625 | Nov 2015 | US |
Child | 15471876 | US | |
Parent | 14450736 | Aug 2014 | US |
Child | 14933625 | US | |
Parent | 12615469 | Nov 2009 | US |
Child | 14450736 | US | |
Parent | 11190328 | Jul 2005 | US |
Child | 12615469 | US |