Height-adjustable seat belt guide outlets for seat backrests
A height-adjustable safety belt guide outlet for a seat backrest. The height-adjustable safety belt guide outlet may have a backrest, a base, a sliding component, a safety belt guide component and a driving assembly. The base may be fixedly mounted at a shoulder position of the backrest. The sliding component may be fitted on the base to slide vertically in a height direction of the backrest. The safety belt guide component may be fixedly mounted on the sliding component. The driving assembly may be fitted between the base and the sliding component, and may be used for driving the sliding component to slide vertically.
1 . A height-adjustable safety belt guide outlet for a seat backrest, wherein the height-adjustable safety belt guide outlet comprises:
a backrest;
a base, which is fixedly mounted at a shoulder position of the backrest;
a sliding component, the sliding component being fitted on the base so as to be able to slide vertically in a height direction of the backrest;
a safety belt guide component, which is fixedly mounted on the sliding component;
and a driving assembly, which is fitted between the base and the sliding component, and used for driving the sliding component to slide vertically.
2 . The height-adjustable safety belt guide outlet for a seat backrest as claimed in claim 1 , wherein: the base comprises a lower base and an upper base that is fixedly mounted on the lower base by means of a screw, the lower base being fixedly fitted at the shoulder position of the backrest.
3 . The height-adjustable safety belt guide outlet for a seat backrest as claimed in claim 2 , wherein: an upper end and a lower end of the upper base are provided with an upwardly bent support plate, two guide rods being fixedly mounted between two groups of said support plates, an upper end and a lower end of the sliding component being provided with a downwardly extending assembly plate, and a sliding hole that slidably fits over the guide rod being provided on the assembly plate.
4 . The height-adjustable safety belt guide outlet for a seat backrest as claimed in claim 3 , wherein: the driving assembly comprises an electric motor and a lead screw that is in motive power connection with an output shaft of the electric motor, the electric motor being fixedly fitted on an outer side of one of the support plates, and two ends of the lead screw being rotatably supported on two said support plates.
5 . The height-adjustable safety belt guide outlet for a seat backrest as claimed in claim 4 , wherein: the electric motor is a reduction motor, and an upper end of the lead screw is in motive power connection with an output end of the electric motor.
6 . The height-adjustable safety belt guide outlet for a seat backrest as claimed in claim 1 , wherein: the height-adjustable safety belt guide outlet further comprises a safety belt retractor that is mounted on a shoulder rear side of the backrest.
7 . The height-adjustable safety belt guide outlet for a seat backrest as claimed in claim 3 , wherein: a bushing is fitted in the sliding hole.
8 . The height-adjustable safety belt guide outlet for a seat backrest as claimed in claim 3 , wherein: the sliding component is a linear sliding block.
9 . The height-adjustable safety belt guide outlet for a seat backrest as claimed in claim 1 , wherein: the driving assembly comprises an electric motor and a synchronous belt, a synchronous wheel being fitted over an output end of the electric motor, a directional wheel being provided on the base, the synchronous belt being fitted over the synchronous wheel and the directional wheel, and the sliding component being fixedly mounted to one side of the synchronous belt.