Patent ID: 6520580
Filing Date: 2003-02-18
Classification: B60N,Y10T

Abstract:
In a controlling apparatus for a lumbar support of a car seat for supporting a lumbar region of a person, said controlling apparatus comprising:a supporting plate (10) which protrudes in a center part thereof by selective bending and has locking holes (12) at both upper and lower end parts of a main body of said supporting plate, said supporting plate having a plurality of support wings (11) extending from said main body, wherein said supporting plate (10) is an elastic plate spring (1) for supporting the lumbar region of the person; a locking member (40) fixed with the supporting plate by the locking holes (12) at the upper and lower end parts of the supporting plate (10), said locking member having upper and lower flanges (43); a hollow cylindrical housing (310) having a jaw (311) at one end thereof and for controlling a height of the supporting plate (10) by controlling a spacing between the upper and lower flanges (43) of the locking member (40); a sleeve (320) having a groove (321) in engagement with the jaw (311) of the housing (310), said sleeve having an internal screw thread (322) inside the sleeve (320); a body (330) having a screw (331) in engagement with the internal screw thread (322) of the sleeve (320), and having a groove (332) at a rear end thereof; a handle (340) in engagement with the sleeve (320) for rotation therewith; a cable (350) made of a flexible material and connected to the housing (310) and one of said flanges (43) of the locking member (40); a release wire (360) disposed within the cable (350) and having one end with a fixation ball (361) suspended in the groove (332) of the body (330), the other end of said release wire having a fixation pin (362) attached to the other of said flanges (43) of the locking member (40); and an elastic tension spring (400) located between the other end of the release wire (360) and the other of said flanges (43) of the locking member (40), for maintaining a tension of the release wire (360), and an elastic member (80) between the body (330) and the housing (310), that counterbalances an elastic tension of the tension spring (400) and an elastic release force of the supporting plate (10), wherein said elastic member (80) is a compression coil spring.