Shaft bearing bush assembly for a valve arrangement

A valve arrangement for an air-conditioning system, comprising:

• an adjustable valve for influencing a fluid flow;
• a shaft-bearing bush assembly, wherein the shaft-bearing bush assembly for adjusting the valve drive-connects a drive device of the valve arrangement to the valve, the shaft-bearing bush assembly including:
• a shaft extending along an axial direction, the shaft being drive-connectable to the valve;
• a bearing bush, in which the shaft is rotatably received relative to the bearing bush between a first rotary position and a second rotary position about an axis of rotation extending along the axial direction;
• a first bush projection non-rotatably arranged on the bearing bush relative to the bearing bush and a shaft projection non-rotatably arranged on the shaft relative to the shaft;
• a second bush projection disposed on the bearing bush and non-rotatably arranged relative to the bearing bush, the second bush projection arranged along the circumferential direction of the bearing bush at a bush projection distance relative to the first bush projection;
• wherein the first bush projection, the second bush projection and the shaft projection are matched to one another such that the first bush projection and the second bush projection provide a rotary stop for the shaft projection for limiting the rotary movement of the shaft between the first rotary position and the second rotary position;
• wherein the first bush projection and the second bush projection are each structured as a rib extending radially and axially along the bearing bush;
• and
• wherein at least one of:
• the shaft projection has a rib length measured in the axial direction of 4 mm to 6 mm and a rib height measured radially away from an outer surface of the shaft of 2 mm to 8 mm;
• and
• the first bush projection and the second bush projection each have a rib length measured in the axial direction of 4 to 6 mm and a radially measured rib height of 2 mm to 8 mm.

An air-conditioning system for air-conditioning a vehicle interior, comprising:

• a valve arrangement including an adjustable valve for influencing a fluid flow and a shaft-bearing bush assembly for adjusting the valve;
• a fluid passage, through which the fluid flow is flowable;
• wherein the shaft-bearing bush assembly includes:
• a shaft extending along an axial direction, the shaft being drive-connectable to the valve;
• a bearing bush, in which the shaft is rotatably received relative to the bearing bush between a first rotary position and a second rotary position about an axis of rotation extending along the axial direction;
• a first bush projection non-rotatably arranged on the bearing bush relative to the bearing bush and a shaft projection non-rotatably arranged on the shaft relative to the shaft;
• a second bush projection disposed on the bearing bush and non-rotatably arranged relative to the bearing bush, the second bush projection arranged along the circumferential direction of the bearing bush at a bush projection distance relative to the first bush projection;
• wherein the first bush projection, the second bush projection and the shaft projection are matched to one another such that the first bush projection and the second bush projection provide a rotary stop for the shaft projection for limiting the rotary movement of the shaft between the first rotary position and the second rotary position;
• wherein in a cross section perpendicularly to the axial direction the first bush projection and the second bush projection are arranged projecting radially from the bearing bush and offset relative to one another by an angle of rotation of at least 180 degrees measured in the circumferential direction at the bush projection distance relative to one another;
• and
• wherein at least one of:
• the shaft projection is structured rib-like with a rib length measured in the axial direction of 4 mm to 6 mm and a rib height measured radially away from an outer surface of the shaft of 2 mm to 8 mm;
• and
• the first bush projection and the second bush projection are each structured rib-like with a rib length measured in the axial direction of 4 to 6 mm and a radially measured rib height of 2 mm to 8 mm.