Lumbar support mechanism and adjustable bed therewith

Abstract

The lumbar support and massage mechanism and an adjustable bed therewith. The lumbar support and massage mechanism includes a lumbar support member, a massage member installed on the lumbar support member, and a lumbar lifting assembly comprising at least one lumbar lifting structure moveably connected to the lumbar support member, and a lumbar lifting actuator operably driving the at least one lumbar lifting structure to move so as to lift or retract the lumbar support member for providing lumbar support and massage effects.

What is claimed is: 
     
         1 . A lumbar support mechanism usable in an adjustable bed, comprising:
 a lumbar support member; and   a lumbar lifting assembly comprising at least one lumbar lifting structure moveably connected to the lumbar support member, and a lumbar lifting actuator operably driving the at least one lumbar lifting structure to move so as to lift (raise) or retract the lumbar support member for providing lumbar support.   
     
     
         2 . The lumbar support mechanism of  claim 1 , wherein the lumbar lifting assembly further comprises a linkage member, and wherein the at least one lumbar lifting structure comprises a first lumbar lifting structure and a second lumbar lifting structure connected to the first lumbar lifting structure by the linkage member, each lumbar lifting structure comprising a fixing bracket, a first leg having an upper end pivotally movably connected to the lumbar support member and a lower end operably movable in the fixing bracket and pivotally connected to the linkage member by a guiding pin, and a second leg having an upper end pivotally connected to a middle portion of the first leg and a lower end pivotally connected to the fixing bracket, such that a distance between the lumbar support member and the linkage member is changeable between a minimal distance and a maximal distance when the linkage member moves between a first position and a second position. 
     
     
         3 . The lumbar support mechanism of  claim 2 , wherein the fixing bracket has a guiding slot having first and second ends, the guiding slot being configured to moveably receive the guiding pin, such that when the guiding pin moves to the first end of the guiding slot, the linkage member moves to the first position, and when the guiding pin moves to the second end of the guiding slot, the linkage member moves to the second position. 
     
     
         4 . The lumbar support mechanism of  claim 3 , wherein each lumbar lifting structure further comprises a bearing member accommodated and operably movable in the fixing bracket, the bearing member being pivotally connected to the lower end of the first leg. 
     
     
         5 . The lumbar support mechanism of  claim 4 , wherein the bearing member comprises at least one sliding block. 
     
     
         6 . The lumbar support mechanism of  claim 5 , wherein the bearing member comprises at least one roller pivotally connected to the lower end of the first leg and the linkage member by the guiding pin that is movably received in the guiding slot of the fixing bracket, such that when the lower end of the first leg is driven to move in the fixing bracket, the guiding pin moves along the guiding slot of the fixing bracket and the at least one roller rotates on a bottom wall of the fixing bracket. 
     
     
         7 . The lumbar support mechanism of  claim 2 , wherein the lumbar lifting actuator pivotally connected to the lower end of the first leg of one of the first and second lumbar lifting structures or the guiding pin that pivotally connects the lower end of the first leg of said one of the first and second lumbar lifting structures to the linkage member for operably driving the linkage member to move between the first position and the second position. 
     
     
         8 . The lumbar support mechanism of  claim 7 , wherein the lumbar lifting actuator comprises a motor member, an outer tube extending from the motor member, and an activation rod received in the outer tube, engaged with the motor member and configured to be telescopically movable relative to the outer tube according to a direction of motor rotation. 
     
     
         9 . The lumbar support mechanism of  claim 8 , wherein the motor member is configured to be attached onto the adjustable bed, and a distal end of the activation rod is pivotally connected to the lower end of the first leg of said one of the first and second lumbar lifting structures or the guiding pin that pivotally connects the lower end of the first leg of said one of the first and second lumbar lifting structures to the linkage member. 
     
     
         10 . The lumbar support mechanism of  claim 1 , further comprising at least one massage member installed on the lumbar support member for providing massage effects. 
     
     
         11 . The lumbar support mechanism of  claim 10 , wherein at least one massage member comprises a vibrator. 
     
     
         12 . The lumbar support mechanism of  claim 11 , wherein at least one massage member further comprises a vibration fixing plate installed in a mounting slot of the lumbar support member, and a buffer sleeved on the vibrator and mounted on the vibration fixing plate. 
     
     
         13 . An adjustable bed, comprising:
 the lumbar support mechanism of  claim 1 , for operably providing the lumbar support when the lumbar support member is lifted to fit user's lumbar.   
     
     
         14 . The adjustable bed of  claim 13 , wherein the lumbar support mechanism further comprises at least one massage member installed on the lumbar support member for providing massage effects.