Expandable room dividers

1. A system for providing an expandable room divider, the system comprising:

a frame;

a non-releasable panel having a broad side; and

a plurality of movable panels,

wherein the frame is configured to:

retain the non-releasable panel; and

accommodate, stacked against the broad side of the non-releasable panel, the plurality of movable panels; and

a locking mechanism configured to selectively prevent, while in a locked state, and allow, while in an unlocked state, movement of the plurality of movable panels from the frame, the locking mechanism having a longitudinal axis and including:

a plunger disposed coaxial with the longitudinal axis, the plunger:

having a head at a first end; and

configured to travel along the longitudinal axis;

a spring configured to longitudinally bias the plunger to force the head to temporarily protrude from a body;

an actuator linked to the plunger at a second end of the plunger, the actuator configured to:

receive application of a force sufficient to counter the spring; and

draw the plunger back in a direction of the second end; and

the body configured to:

support the plunger, the spring and the actuator; and

receive the head as the plunger travels back in the direction of the second end;

wherein:

the locking mechanism is affixed to the frame, with the plunger and the longitudinal axis disposed parallel the broad side of the non-releasable panel;

a first face of the head prevents movement of the moveable panels away from the non-releasable panel when the head is maintained protruding from the body;

a second face of the head, obverse the first face, is configured to-receive a momentum directed transverse the longitudinal axis, transmit a component of the transverse momentum to the plunger, and allow movement of the moveable panels past the body in a direction toward the non-releasable panel; and

the actuator includes:

a surface configured to receive the force; and,

a stem that supports the surface;

the actuator linked to the plunger via a linkage that includes a pin disposed transverse the longitudinal axis, the pin extending through:

the plunger at the second end of the plunger; and

the stem away from the surface.

2. The system of claim 1 wherein:

the frame, in operation, maintains the non-releasable panel vertically upright;

the non-releasable panel is hinged along a vertical edge of the non-releasable panel to a movable panel of the plurality; and

the movable panels of the plurality are serially hinged, in an accordion-pleat configuration, together.

3. The system of claim 2 wherein:

the frame is a first frame;

the non-releasable panel is a first non-releasable panel; and

the locking mechanism is a first locking mechanism; and

the system further comprises:

a second frame retaining a second non-releasable panel, the second frame, in operation, maintaining the second non-releasable panel vertically upright, the second non-releasable panel hinged along a vertical edge of the second non-releasable panel to a movable panel of the plurality; and

a second locking mechanism affixed to the second frame, the second locking mechanism configured to selectively prevent and allow movement, away from the second frame, of:

the plurality of movable panels; and

the first non-releasable panel.

4. The system of claim 1 wherein the stem includes, between the pin and the surface, a contour bulging convexly towards the head, the contour configured to interfere with an exterior facet of the body to progressively draw the linkage in the direction of the second end as the contour is progressively forced along the facet, the actuator swiveling about the pin, the surface of the actuator moving toward the body and toward the first end.

5. The system of claim 1 wherein:

the momentum directed transverse the longitudinal axis is received from a contact force transferred to the second face by a panel of the plurality as the panel moves toward the non-releasable panel;

the component of the transverse momentum is a longitudinal momentum directed toward the second end of the plunger; and

the second face is further configured to:

drive the head, opposite the spring bias, into the body; and,

thereby, allow the movement of the moveable panels past the body in a direction toward the non-releasable panel.

6. The system of claim 5 wherein, after the panel of the plurality moves past the body, the spring restores the head to protrude from the body.

7. The system of claim 5 wherein the second face includes a curvilinear region configured to receive the contact force.

8. The system of claim 1 wherein drawing the plunger back in the direction of the second end allows the moveable panels to move past the body in a direction away from the non-releasable panel.

9. The system of claim 1 wherein the actuator is disposed for application of the force as a foot pedal, the force applied by a user's foot.

10. The system of claim 1 wherein:

the first face of the head is parallel to and facing the broad side of the non-releasable panel; and

the first face of the head is spaced adjustably from the non-releasable panel to accommodate a thickness of all the movable panels stacked against the broad side of the non-releasable panel.

11. The system of claim 1 wherein the frame includes:

an exterior vertical wall of the system; and

a magnet disposed on the wall, the magnet configured to releasably adjoin the frame to a magnetic element of a component of another expandable room divider.

12. A system for selectively securing together room partitions and deploying room partitions, the system comprising:

a frame;

a non-releasable room partition;

a plurality of movable room partitions; and

a locking mechanism affixed to the frame,

wherein the frame is configured to:

permanently retain the non-releasable room partition; and

accommodate the plurality of movable room partitions that are selectively:

locked against the non-releasable room partition;

when unlocked from the frame, moved away from the non-releasable room partition and deployed to form an extended room divider; and

returned to the frame and secured against the non-releasable room partition when in a locked state;

the non-releasable room partition affixed to the frame;

the plurality of movable room partitions serially hinged, in an accordion-pleat configuration, together, to form a room partition of the plurality hinged to the non-releasable room partition; and

the locking mechanism:

including:

a spring biasing a plunger, the plunger with a head at a first end of the plunger, the plunger biased in a direction of the first end; and

an actuator linked to the plunger at a second end of the plunger; and

configured to selectively:

when the head protrudes anteriorly, biased by the spring, out of a body of the locking mechanism:

 prevent the movable room partitions from moving past the head in a direction away from the non-releasable room partition; and

when the head is retracted, by application of a force, back from a forward location in a direction of the second end of the plunger away from the first end, then:

 when the force is applied by a user to the actuator away from the head, the force drawing the head back from the forward location:

 allow the movable room partitions to move past the head in a direction away from the non-releasable room partition, allowing the releasable room partitions to be deployed into a configuration of an extended room divider; and

 when the force is a contact force applied by a room partition of the plurality to a region of the head, the head at the forward location, the room partition moving in a direction toward the non-releasable room partition and encountering the head, the head receiving a momentum from the moveable partition, a component of the momentum directed back toward the second end of the plunger:

 allow the room partition to move past the head in the direction toward the non-releasable room partition;

wherein the actuator includes:

a surface configured to receive the force applied by the user; and

a stem configured to support the surface, the stem with a length away from the surface, the length:

disposed athwart the second end of the plunger; and

linked to the second end via a linkage that includes a pin extending through the length and the second end and away from the surface.

13. The system of claim 12 wherein the frame maintains the non-releasable room partition vertically upright.

14. The system of claim 13 wherein the non-releasable room partition is hinged along a vertical edge.

15. The system of claim 12 wherein a room partition of the plurality is equipped with wheels below a lower edge of the room partition, the wheels disposed at opposing ends of a wheelbase oriented transverse a plane of a broad side of the room partition.

16. The system of claim 15 wherein the wheelbase of a first room partition of the plurality is longer than a wheelbase of another room partition of the plurality, wherein the other room partition is closer than the first room partition in serially hinged sequence to the non-releasable room partition.

17. The system of claim 12 wherein, after application of a contact force by a room partition of the plurality to a region of the head, the spring moves the plunger forward.

18. The system of claim 12 wherein:

the body is configured to:

support the plunger, the spring and the actuator; and

receive the head when the head is retracted back from the forward location; and

the stem includes, between the length and the surface, a contour bulging convexly in the direction of the first end of the plunger, the contour configured to interfere with an exterior facet of the body to progressively draw the linkage in the direction of the second end as the contour is progressively forced along the facet, the actuator swiveling about the pin, the surface moving toward the body and toward the first end.

19. The system of claim 12 wherein the locking mechanism is affixed adjustably to the frame, thereby spacing the head adjustably from the non-releasable room partition to accommodate:

reducing the plurality by removing one or more pairs from the plurality and hinging together the remaining pairs; and

augmenting the plurality by adding one or more pairs of hinged movable room partitions to the plurality, incorporating the one or more pairs into the plurality by hinging edges of the one or more pairs to unhinged edges of the plurality.