Waist rest depth adjusting device
A technology of depth adjustment and lumbar support, applied in the field of seating equipment, can solve the problems of non-adaptive adjustment and stiff lumbar support.
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[0047] like Figure 1-11 As shown, the present invention provides a lumbar depth adjustment device, which includes a lumbar body 1 rotatably connected to a back bracket A, and the lumbar body 1 can rotate around the back bracket A back and forth. A longitudinal supporting part 3 is provided between the lumbar support body 1 and the back bracket A. The supporting part 3 includes a fitting part 8 at the bottom and a vertical elastic part 14 with elasticity. The fitting part 8 is slidably matched with the back bracket A, The supporting part 3 can slide upwards or downwards along the back bracket A in response to the back and forth rotation of the lumbar support body 1 . The back support A is also provided with an adjustment assembly 4 located on one side of the support member 3, the adjustment assembly 4 includes a cylindrical guide seat 5 connected to the back support A, a locking member 6 arranged in the cylindrical guide seat 5, and The control handle 7 that can control the m...
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