Multitier folding stand for electronic devices
View Patent ↗A multitier folding stand is provided with a rectangular base ( 1 ) including two parallel toothed members ( 11 ), a transverse groove ( 12 ), two cavities ( 13 ), two detents ( 14 ), two rear bossed holes ( 15 ), and a rotatable disc ( 16 ); a pivotal platform ( 2 ); a bent support ( 3 ) pivotably secured to the platform ( 2 ); two aligned pivotal arms ( 4 ) pivotably secured to the bossed holes ( 15 ) respectively and including a lengthwise trough ( 43 ); two opposite pivotal support arms ( 5 ) including a main part ( 51 ), two pivots ( 52 ) at two ends of the main part ( 51 ) respectively, first and second bearings ( 53, 54 ) for securing the pivots ( 52 ) to the base ( 1 ) respectively, a sliding groove ( 55 ) in the main part ( 51 ), a first hole ( 56 ) through a first end of the sliding groove ( 55 ), and a sleeve ( 58 ) in the first hole ( 56 ); and two opposite pivotal legs ( 6 ).
1. A multitier folding stand, comprising:
a rectangular base ( 1 ) including two parallel toothed members ( 11 ) on a top, a transverse groove ( 12 ) on the top adjacent a front end, two opposite cavities ( 13 ) on a bottom, two detents ( 14 ) at edges of the cavities ( 13 ) respectively, two bossed holes ( 15 ) on two rear corners respectively, and a central rotatable disc ( 16 ) on the bottom adapted to rotate the stand;
a rectangular platform ( 2 ) including two spaced wells ( 21 ) on a front end, two fasteners ( 22 ) through the wells ( 21 ) respectively to fasten the platform ( 2 ) and the base ( 1 ) together, and a pivotal plate ( 23 ) between the wells ( 21 );
a bent support ( 3 ) including two fasteners ( 31 ) for pivotably securing two ends to the bottom of the platform ( 2 ) wherein the support ( 3 ) is configured to selectively position in teeth of the toothed members ( 11 ) when the platform ( 2 ) mounted on the base ( 1 ) is pivoted;
two aligned pivotal arms ( 4 ), each including a pivot hole ( 42 ) at a first end pivotably secured to the bossed hole ( 15 ) by disposing a pivot ( 41 ) through the pivot hole ( 42 ), and a lengthwise trough ( 43 ) wherein in a non-use position, second ends of the pivotal arms ( 4 ) are adjacent to each other;
two opposite pivotal support arms ( 5 ), each including a main part ( 51 ), two pivots ( 52 ) at two ends of the main part ( 51 ) respectively, first and second bearings ( 53 , 54 ) for securing the pivots ( 52 ) to the bottom of the base ( 1 ) respectively, a groove ( 55 ) in the main part ( 51 ), a first hole ( 56 ) through a first end of the groove ( 55 ), and a sleeve ( 58 ) in the first hole ( 56 ) wherein the support arms ( 5 ) are configured to pivot to dispose in the cavities ( 13 ) in the non-use position or dispose at an angle of 90 degrees with respect to the base ( 1 ) in a use position; and
two opposite pivotal legs ( 6 ), each including a main part ( 61 ) facing the main part ( 51 ) of the support arm ( 5 ), a second hole ( 62 ) through the main part ( 61 ) of the pivotal leg ( 6 ) and aligned with the first hole ( 56 ), a rod ( 63 ) fastened in the sleeve ( 58 ) by passing through the first and second holes ( 56 , 62 ), and a fastener ( 64 ) driven through an end of an arm ( 65 ) into the support arm ( 5 ) to fasten the support arm ( 5 ) in an extended position wherein the main part ( 61 ) of the leg ( 6 ) is disposed in the groove ( 55 ) in the non-use position or fully extended in the use position.
2. The multitier folding stand of claim 1 , wherein the detent ( 14 ) includes an elongated hole ( 141 ) and a rod ( 142 ) slidably passing through the elongated hole ( 141 ), so that the detent ( 14 ) is configured to move back or forth.