Extendable seat frame and furniture thereof

Abstract

Provided are an extendable seat frame and a furniture thereof. The extendable seat frame includes: a fixed base; a seat frame main body, configured to move relatively above the fixed base; and an extension apparatus, configured to be rotatably connected to the fixed base and rotatably connected to the seat frame main body so as to enable the extendable seat frame to switch between a retracted state and an extended state. Further, the extension apparatus includes at least an extension part, one end of the extension part is rotatably connected to an end of the seat frame main body that is away from an extending direction, and the extension part is configured to drive the extension part to flip in response to the seat frame main body moving towards the extending direction.

What is claimed is: 
     
         1 . An extendable seat frame, comprising:
 a fixed base;   a seat frame main body, configured to move relatively above the fixed base; and   an extension apparatus, configured to be rotatably connected to the fixed base and rotatably connected to the seat frame main body so as to enable the extendable seat frame to switch between a retracted state and an extended state,   wherein the extension apparatus comprises at least an extension part, one end of the extension part is rotatably connected to an end of the seat frame main body that is away from an extending direction, and the extension part is configured to drive the extension part to flip in response to the seat frame main body moving towards the extending direction.   
     
     
         2 . The extendable seat frame according to  claim 1 , wherein a length of the extension part is within 200˜350 mm. 
     
     
         3 . The extendable seat frame according to  claim 1 , wherein a maximum moving distance of the seat frame main body is within 450˜600 mm. 
     
     
         4 . The extendable seat frame according to  claim 1 , wherein the extension apparatus further comprises at least one rotating frame that is rotatably connected to the extension part and rotatably connected to the fixed base. 
     
     
         5 . The extendable seat frame according to  claim 4 , wherein at least one rotating connection component is placed at a connection point of the extension part with the seat frame main body, the at least one rotating connection component comprises a first connector and a second connector, the first connector is fixed to an end face of the seat frame main body, and the second connector is fixed to the extension part, and the first connector and the second connector are rotatably connected correspondingly. 
     
     
         6 . The extendable seat frame according to  claim 5 , wherein the second connector is an L-shaped piece, with one side fixed to the extension part and the other side rotatably connected to the first connector. 
     
     
         7 . The extendable seat frame according to  claim 5 , wherein at least one third connector is fixed on the extension part, with the third connector rotatably connected correspondingly to a rotating frame. 
     
     
         8 . The extendable seat frame according to  claim 7 , wherein both the second connector and the third connector are integrally structured with the extension part. 
     
     
         9 . The extendable seat frame according to  claim 5 , wherein the second connector has a groove structure located at an end face of the extension part, the first connector is inserted into the groove structure, and the groove structure is configured to rotate relative to the first connector. 
     
     
         10 . The extendable seat frame according to  claim 1 , wherein the extendable seat frame further comprises a driver that is placed on the fixed base, an output end of the driver is movably connected to the seat frame main body, and the driver is configured to drive movement of the seat frame main body. 
     
     
         11 . The extendable seat frame according to  claim 10 , wherein a sliding apparatus is placed between the seat frame main body and the fixed base, the sliding apparatus comprises a slide rail component and a sliding component configured to slide relatively, a top of the sliding component is fixedly connected to the seat frame main body, the driver is drivingly connected to the slide rail component, and the driver is configured to drive the sliding component to slide relative to the slide rail component. 
     
     
         12 . The extendable seat frame according to  claim 11 , wherein the slide rail component comprises a first guide rail and at least one second guide rail, and the sliding component comprises a first slider and at least one second slider, the output end of the driver is connected to the first guide rail and configured to drive the first slider to slide relative to the first guide rail, the first slider is fixedly connected to the second slider, and a top of the second slider is fixedly connected to the seat frame main body and drives the second slider and the seat frame main body to slide reciprocally along the extending direction. 
     
     
         13 . The extendable seat frame according to  claim 10 , wherein an extendable push rod is placed between the seat frame main body and the fixed base, the extendable push rod comprises an extendable section and a fixed section connected telescopically, one end of the extendable section is connected to the seat frame main body, and one end of the fixed section is connected to the driver, and the driver is configured to drive the extendable section to move telescopically relative to the fixed section. 
     
     
         14 . A furniture, comprising:
 a first cushion,   a second cushion, and   an extendable seat frame comprising:
 a fixed base; 
 a seat frame main body, configured to move relatively above the fixed base; and 
 an extension apparatus, configured to be rotatably connected to the fixed base and rotatably connected to the seat frame main body so as to enable the extendable seat frame to switch between a retracted state and an extended state, 
 wherein the extension apparatus comprises at least an extension part, one end of the extension part is rotatably connected to an end of the seat frame main body that is away from an extending direction, and the extension part is configured to drive the extension part to flip in response to the seat frame main body moving towards the extending direction, 
   wherein the first cushion is placed above the seat frame main body, the second cushion is placed above the extension part, an upper surface of the first cushion and an upper surface of the second cushion are on a same horizontal plane.   
     
     
         15 . The furniture according to  claim 14 , wherein a length of the extension part is within 200˜350 mm. 
     
     
         16 . The furniture according to  claim 14 , wherein a maximum moving distance of the seat frame main body is within 450˜600 mm. 
     
     
         17 . The furniture according to  claim 14 , wherein the extension apparatus further comprises at least one rotating frame that is rotatably connected to the extension part and rotatably connected to the fixed base. 
     
     
         18 . The furniture according to  claim 17 , wherein at least one rotating connection component is placed at a connection point of the extension part with the seat frame main body, the at least one rotating connection component comprises a first connector and a second connector, the first connector is fixed to an end face of the seat frame main body, and the second connector is fixed to the extension part, and the first connector and the second connector are rotatably connected correspondingly. 
     
     
         19 . The furniture according to  claim 18 , wherein the second connector is an L-shaped piece, with one side fixed to the extension part and the other side rotatably connected to the first connector. 
     
     
         20 . The furniture according to  claim 18 , wherein at least one third connector is fixed on the extension part, with the third connector rotatably connected correspondingly to a rotating frame.