Folding sofa-bed construction with adjustable head section

Claim 2

In a bed frame structure: a. a foldable frame with a supporting flexible fabric, said frame including a body section and a head section; b. pivot means connecting the head section to the body section for swinging movements between a lowered position of use coplanar with the body section and a raised position of use extending at an angle to the body section; c. an upstanding bracket plate fixedly mounted in association with the body section adjacent the pivot means, said plate having an elongate slot with a side portion providing a latching notch; d. a linkage connection with the head section adjacent said pivot means including a link pivoted at one end for swinging movement and at its other end having a pin movable in said slot, and upon being positioned in said notch operating to latch the head section in said raised position of use; and e. means operative in response to a raising movement of the head section for releasing said pin with respect to the notch and permitting subsequent lowering movement of the head section to said coplanar position of use.

Claim 3

A bed frame structure according to claim 1, wherein said notch is positioned between end portions of the slot, and the raising movement of the head section to release the pin is beyond the raised position of use.

Claim 4

A bed frame structure according to claim 2, wherein said slot end portions extend in opposite directions from said notch and are in axially offset relation.

Claim 5

A bed frame structure according to claim 3, wherein said notch is so formed as to enable unobstructed movement of the pin in one direction from one slot end portion to the other slot end portion, but opposes pin movement in an opposite direction between the end portions.

Claim 6

A bed frame structure according to claim 2, wherein said means for releasing said pin comprises a movably supported member having a part normally in a position permitting movement of said pin from said notch in one direction into one of said slot end portions, and thereafter upon reverse movement of said pin permitting movement from said one of said slot end portions past the notch into the other of the slot end portions.

Claim 7

A bed frame structure according to claim 5, wherein said member is pivoted for swinging movement in opposite directions from a normal position, and said part comprises one end portion which extends at the normal position into the path of movement of said pin.

Claim 8

A bed frame structure according to claim 6, wherein said end portion of said member has a camming side edge operative in one direction of the swinging movement of the member to provide a pin guiding ramp across the notch.

Claim 9

A bed fram structure according to claim 7, in which a stop limits the swinging movement in said one direction.

Claim 10

A bed frame structure according to claim 6, wherein force generating means urges said member towards said normal position.

Claim 11

A bed frame struture according to claim 9, in which said force generating means is gravity.

Claim 12

A bed frame structure accordIng to claim 6, wherein said member is pivoted between its ends, and the end portion opposite said one end portion provides a weight operative under the force of gravity to urge the member towards said normal position.

Claim 13

In a folding sofa-bed construction including a bed frame having a plurality of frame sections, one of which is an inner head section and another an adjacent trunk section, said sections being pivotally interconnected in end-to-end relation for selective unfolding movement to an extended coplanar bed-forming position and folding movement to a folded retracted sofa seat-forming position in which the trunk section is disposed generally horizontally along the base of the sofa frame and the head section extends generally upright in a space at the rear of the sofa seat, the combination comprising: a. mechanism for supporting and controlling the movements of the frame sections during movement of the bed frame to extended and retracted positions including: front and rear support linkage assemblies connected with the trunk section for determining the path of movement of the trunk section during folding and unfolding movements of the bed frame; connecting means between said assemblies including a link member for coordinating the movements of said assemblies; and a head section actuating link for swinging the head section relative to the trunk section, one end of said actuating link being pivotally connected with the head section in spaced relation to its pivot connection with the trunk section, and its other end being pivotally connected with the coordinating link member of the connecting means; b. mechanism for releasably latching the head section in a raised position of use extending at an angle to the trunk section, when the frame sections are in a bed-forming position, including: an upstanding bracket plate fixedly secured to said coordinating link member adjacent the pivotal connection of the trunk section with the head section, said plate having an elongate slot with a side portion providing a latching notch; and a link member pivotally connected at one end with said head section actuating link and at its other end having a pin movable in said slot, and upon being positioned in said notch operating to releasably latch the head section in said raised position of use.

Claim 14

In a folding sofa-bed construction including a bed frame having a plurality of frame sections, one of which is an inner head section and another an adjacent trunk section, said sections being pivotally interconnected in end-to-end relation for selective unfolding movement to an extended coplanar bed-forming position and folding movement to a folded retracted sofa seat-forming position in which the trunk section is disposed generally horizontally along the base of the sofa frame and the head section extends generally upright in a space at the rear of the sofa seat, the combination comprising: a. mechanism for supporting and controlling the movements of the frame sections during movement of the bed frame to extended and retracted positions including: front and rear support linkage assemblies connected with the trunk section for determining the path of movement of the trunk section during folding and unfolding movements of the bed frame; connecting means between said assemblies including a link member for coordinating the movements of said assemblies; and a head section actuating link for swinging the head section relative to the trunk section, one end of said actuating link being pivotally connected with the head section in spaced relation to its pivot connection with the trunk section, and its other end being pivotally connected with the coordinating link member of the connecting means; b. mechanism for releasably latching the head section in a raised position of use extending at an angle to the trunk section, when the frame sections are in a bed-forming position, including: an upstanding bracket plate fixedly secured to said coordinating link member adjacent the pivotal connection of the trunk section with the head section, said plate having an elongate slot with a side portion providing a latching notch; and a link member pivotally connected at one end with said head section actuating link and at its other end having a pin movable in said slot, and upon being positioned in said notch operating to releasably latch the head section in said raised position of use.

Claim 15

A folding sofa-bed construction according to claim 12, wherein the front linkage assembly includes an anchor link having a fixed pivot at its inner end, and the coordinating link member has a pivotal connection with the anchor link.

Claim 16

A folding sofa-bed construction according to claim 12, including means operative in response to a raising movement of the head section for releasing said pin with respect to said notch and permitting subsequent lowering movement of the head section to a lowered position of use coplanar with the trunk section.

Claim 17

A folding sofa-bed construction according to claim 14 wherein said notch is positioned between the slot ends, and the raising movement of the head section to release the pin is beyond the raised position of use.

Claim 18

A folding sofa-bed construction according to claim 12, wherein the pivotal connection of the head section actuating link with the coordinating link member is coaxial with the pivot connection of the head section with the trunk section, when the frame sections are in the bed-forming position.

Claim 19

A folding sofa-bed construction according to claim 12, wherein the actuating link and coordinating link are connected in a manner such that their angular relation remains relatively constant while being moved in a translatory path during folding and unfolding movements of the bed frame sections.