Lock for frame

Abstract

A display apparatus is disclosed that includes a screen and a frame system positioned to support the screen. The frame system includes a plurality of frame members, a hinge that couples the frame members together, and a lock that blocks relative movement of the frame members.

1 . A display apparatus including a screen and a frame system supporting the screen, the frame system having a plurality of frame members, a hinge coupling two of the frame members together, and a lock positioned to block movement of the frame members coupled together by the hinge, the frame members coupled together by the hinge cooperating to define a longitudinal axis and a transverse profile, at least a portion of the lock being positioned within the transverse profile, the lock including first and second lock members that move relative to one another to permit the frame members to move relative to one another, a portion of the first lock member being positioned within the transverse profile and a portion of the first lock member being positioned outside of the transverse profile, the hinge including a plurality of hinge plates and fasteners, at least one of the fasteners extending through at least a portion of at least one of the hinge plates, at least one of the first and second lock members, and a portion of at least one of the frame members. 
     
     
         2 . The apparatus of  claim 1 , wherein the second lock member is positioned completely within the transverse profile. 
     
     
         3 . The apparatus of  claim 1 , wherein the frame members coupled together by the hinge are tubular and cooperate to define a passage, and a majority of the lock is positioned within the passage. 
     
     
         4 . The apparatus of  claim 1 , wherein at least one of the frame members coupled together by the hinge is tubular and has an outer wall, two ends, and an aperture positioned between the two ends, at least one of the first and second lock members is movable relative to the other lock member due to force applied to the lock, the force being transmitted through the aperture. 
     
     
         5 . The apparatus of  claim 1 , wherein at least one of the first and second lock members pivots about a pivot axis between a locked position blocking movement of the frame members on the hinge and an unlocked position permitting movement of the frame members on the hinge, the pivot axis extends through at least one of the frame members coupled together by the hinge. 
     
     
         6 . The apparatus of  claim 1 , wherein the frame members coupled together by the hinge are tubular and have an outer wall and two ends, the first lock member extends through an end of each of the frame members coupled together by the hinge. 
     
     
         7 . The apparatus of  claim 1 , wherein the first lock member includes a key, the second lock member includes a key-receiving portion that receives the key of the first lock member to block relative movement of the frame members coupled together by the hinge, the hinge includes a first hinge plate and a second hinge plate pivotally coupled to the first hinge plate, at least the first hinge plate overlaps each of the frame members coupled together by the hinge, and the screen is substantially blank. 
     
     
         8 . A display apparatus including a screen and a frame system supporting the screen, the frame system having a plurality of frame members, a hinge coupling two of the frame members together, and a lock positioned to block relative movement of the frame members, the lock including first and second interactive members, the first interactive member having a key, and the second interactive member having a key-receiving portion that receives the key of the first interactive member to block relative movement of the frame members when the key is positioned in the key-receiving portion and to permit relative movement of the frame members when the key is spaced apart from the key-receiving portion. 
     
     
         9 . The apparatus of  claim 8 , wherein the key includes a substantially flat surface and the key-receiving portion includes a substantially flat surface that abuts the substantially flat surface of the key when the key is positioned in the key-receiving portion. 
     
     
         10 . The apparatus of  claim 9 , wherein at least one of the first and second interactive members pivots about a pivot axis and the substantially flat surfaces of the key and key-receiving portions are substantially tangent to the pivot axis. 
     
     
         11 . The apparatus of  claim 8 , wherein the key is wedge-shaped and the key-receiving portion compliments the wedge shape of the key. 
     
     
         12 . The apparatus of  claim 8 , wherein the key includes a pair of substantially flat surfaces and the key-receiving portion includes a pair of substantially flat surfaces that abut the substantially flat surfaces of the key when the key is positioned in the key-receiving portion. 
     
     
         13 . The apparatus of  claim 8 , wherein the second interactive member includes a cam and the key rides over the cam before being positioned in the key-receiving portion to block movement of the frame members relative to one another. 
     
     
         14 . The apparatus of  claim 8 , wherein the frame members are tubular and cooperate to define a passage and a majority of the lock is positioned in the passage. 
     
     
         15 . A display apparatus including a screen and a frame system supporting the screen, the frame system having at least first and second frame members, a hinge coupling the first and second frame members together, and a lock positioned to block relative movement of the first and second frame members, the hinge including a first hinge member, a second hinge member pivotally coupled to the first hinge member, a third hinge member, and a fourth hinge member pivotally coupled to the third hinge member, the first and third hinge members being rigidly coupled to the first frame member, the second and fourth hinge members being rigidly coupled to the second frame member, the second hinge member being positioned between the first hinge member and the second frame member, and the third hinge member being positioned between the fourth hinge member and the second frame member. 
     
     
         16 . The apparatus of  claim 15 , wherein the second hinge member is sandwiched between the first hinge member and the first and second frame members. 
     
     
         17 . The apparatus of  claim 16 , wherein the first and fourth hinge members are stamped to include a jog so that the first and fourth hinge members cooperate with the first and second frame members to define gaps to receive the second and third hinge members. 
     
     
         18 . The display apparatus of  claim 1 , wherein the two frame members coupled together by the hinge extend along a perimeter of the screen. 
     
     
         19 . The display apparatus of  claim 1 , wherein the two frame members coupled together by the hinge are co-linear. 
     
     
         20 . The display apparatus of  claim 1 , wherein the portion of the first lock member positioned outside the transverse profile is positioned between at least one of the frame members and the screen.