Abstract: A lever witch comprises first and second rotary levers arranged in outer and inner peripheries of the non-rotary lever, a base mounted in a tip end side of the non-rotary lever and a rotary knob supported by a tip end side of the second rotary lever and rotating together therewith. A through bore is formed in the base for penetrating in a lever rotational axis direction between the rotary knob and the first rotary lever, a pair of contact balls are provided in the through bore to be respectively arranged exposed to both ends of the through bore to put a coil spring between the pair of the contact balls, and detent convex is provided in a rotational direction in the rotary knob to be exposed to one end of the through bore and resiliently contact the contact ball, and a contact edge section is provided along a rotational direction in the first rotary lever to be exposed to the other end of the through bore and resiliently contact the contact ball.

Abstract: A lever witch comprises first and second rotary levers arranged in outer and inner peripheries of the non-rotary lever, a base mounted in a tip end side of the non-rotary lever and a rotary knob supported by a tip end side of the second rotary lever and rotating together therewith. A through bore is formed in the base for penetrating in a lever rotational axis direction between the rotary knob and the first rotary lever, a pair of contact balls are provided in the through bore to be respectively arranged exposed to both ends of the through bore to put a coil spring between the pair of the contact balls, and detent convex is provided in a rotational direction in the rotary knob to be exposed to one end of the through bore and resiliently contact the contact ball, and a contact edge section is provided along a rotational direction in the first rotary lever to be exposed to the other end of the through bore and resiliently contact the contact ball.

Abstract: There is provided an attachment structure of a frame body relative to a front portion capable of attaching the frame body to the front portion with a simple construction, and also there is provided an attachment structure of a frame body relative to a front portion wherein stress or distortion of the frame body is hardly transmitted to the front portion. The attachment structure of a frame body relative to a front portion comprises a curved hooked portion formed on the frame body at the central position, and a groove portion defined in the front portion at the central position, wherein the curved hooked portion elastically presses the groove portion so as to engage the curved hooked portion in the groove portion. The frame body can be easily attached to or detached from the front portion with one-touch operation, and hence the operation is made with very ease, and further even if the frame body is distorted or deformed, the distortion is hardly transmitted to the front portion.

Abstract: There is provided an attachment structure of a frame body relative to a front portion capable of attaching the frame body to the front portion with a simple construction, and also there is provided an attachment structure of a frame body relative to a front portion wherein stress or distortion of the frame body is hardly transmitted to the front portion. The attachment structure of a frame body relative to a front portion comprises a curved hooked portion formed on the frame body at the central position, and a groove portion defined in the front portion at the central position, wherein the curved hooked portion elastically presses the groove portion so as to engage the curved hooked portion in the groove portion. The frame body can be easily attached to or detached from the front portion with one-touch operation, and hence the operation is made with very ease, and further even if the frame body is distorted or deformed, the distortion is hardly transmitted to the front portion.