Vehicle sensor device and seat belt retractor employing same

A vehicle sensor for sensing changes in inclination and acceleration of a vehicle, the vehicle sensor comprising:

• a body that forms an external appearance;
• a cover coupled to an opened one surface of the body;
• a sensor housing rotatably installed in the body according to an installation angle of the body and an inclination of a backrest, such that the sensor housing is configured to rotate in response to a change in the inclination of the backrest;
• a ball installed inside the sensor housing to sense changes in the inclination and acceleration of the vehicle;
• and
• a sensor lever disposed on an upper portion of the ball and having one end rotatably coupled to the sensor housing, the sensor lever maintaining an upright position in response to the change in the inclination of the backrest,
• wherein the sensor lever linearly reciprocates a pilot lever provided in a locking device by a rotation action according to movement of the ball;
• wherein the sensor lever includes:
• a mounting part mounted on the ball;
• a lever coupling part provided on the mounting part and coupled to the pilot lever;
• and
• a shaft coupling part extending to one side from the lever coupling part and coupled to the sensor housing, and
• wherein, when the ball moves to one side according to the change in inclination and acceleration of the vehicle, the lever coupling part rotates about a rotating shaft coupled to the sensor housing to move the pilot lever to an outside of the cover;
• wherein the pilot lever includes:
• a body part slidably coupled to a through-hole formed in the cover;
• a spherical part inserted into a space inside the lever coupling part;
• and
• a connection part connecting the body part and the spherical part, and
• wherein a slit to which the connection part of the pilot lever is rotatably coupled is cut downward by a preset length at an upper end of the lever coupling part.