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US 2010/0072805 A1Published application
Lift chair and a chair frame with a position holding mechanism for use therewith
AssigneeI-Trust Better Life Corp.
InventorsJian-Ming Qiu, Yan-Jun Zhang, Zhi-Liang Gao, Xiao-Xiang Zhang
Life of this patent
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Abstract
In one aspect, the present invention relates a reclining lift chair frame used in a reclining lift chair. The reclining lift chair frame utilizes a position holding mechanism to eliminate the free (idle) fall of the footrest of the reclining lift chair.
Claims13
A position holding mechanism used in a reclining lift chair having an upright position, a TV position and a fully reclined position, comprising:
- (a) a position holding member having a triangle-shaped body and an arm extending from an apex of the triangle-shaped body, wherein the triangle-shaped body has a first side and a second side extending to the arm, a bottom extending to the first and second sides, a notched receptacle recessed from the first side proximal to the apex and an obround opening defined proximally along the second side;
- and wherein the arm has two openings defined in each end portion;
- and
- (b) a detent pin assembly having a stable spacer, a roller bushing received in the stable space, and a detent pin received in the roller bushing such that as assembled, the stable spacer is rotatable relative to the detent pin,
- wherein the position holding member is movably positioned in relation to the detent pin assembly such that when the reclining lift chair is in the upright position, the detent pin assembly is received in the notched receptacle of the position holding member, and when the reclining lift chair is in the fully reclined position, the detent pin assembly is against the first side of the position holding member.
2 more elements
A reclining lift chair frame used in a reclining lift chair having an upright position, a TV position, and a fully reclined position, comprising:
- (a) a base mounting plate;
- (b) a seat mounting link positioned movably relative to the base mounting plate;
- (c) a footrest driving mechanism pivotally connected between the base mounting plate and the seat mounting link;
- (d) a footrest linkage pivotally connected to the footrest driving mechanism and the seat mounting link, wherein the footrest linkage is operably driven by the footrest driving mechanism between a retracted position and an extended position;
- (e) a backrest linkage pivotally connected to the seat mounting link and the base mounting plate;
- (f) a rear drive linkage pivotally connected to the base mounting plate and the footrest driving mechanism, for driving the backrest linkage and the footrest driving mechanism to be in a desired position that is corresponding to one of the upright position, the TV position, and the fully reclined position of the reclining lift chair;
- and
- (g) a position holding mechanism comprising:
- (i) a position holding member having a triangle-shaped body and an arm extending from an apex of the triangle-shaped body, wherein the triangle-shaped body has a first side and a second side extending to the arm, a bottom extending to the first and second sides, a notched receptacle recessed from the first side proximal to the apex and an obround opening defined proximally along the second side;
- wherein the arm has a first opening defined in free end portion and a second opening defined in the end portion proximal to the apex, and wherein the position holding member is pivotally connected to the seat mounting link through the first opening and to the rear drive linkage through the second opening, respectively;
- and
- (ii) a detent pin assembly mounted onto the base mounting plate, and having a stable spacer, a roller bushing received in the stable space, and a detent pin received in the roller bushing such that the stable spacer is rotatable relative to the detent pin,
- wherein the position holding member is movably positioned in relation to the detent pin assembly such that when the reclining lift chair is in the upright position, the detent pin assembly is received in the notched receptacle of the position holding member, and when the reclining lift chair is in the fully reclined position, the detent pin assembly is against the first side of the position holding member.
10 more elements
Dependencies are inferred from the claim text.