Avoid portable mouse that extrusion damaged function

The utility model discloses an avoid portable mouse that extrusion damaged function, its characterized in that the shell is divided into first half and latter half of, and circuit module, gyro wheel integration be at the first half, the latter half of casing that becomes by upper plate, left side board, right side board and rear side hoarding of being, and latter half of and first half are through the upset structrual joint, this upset component is equipped with a rotary rod, rotary rod one end articulates is close to first half border position at the vertical central line in latter half of upper plate lower part, the rotary rod other end is connected with an upset pole, the upset pole is hollow structure, the upset pole is equipped with the adduction half the circumference of the sleeve where it joins the shoulder with connected with rotary rod one end, the upset pole other end is connected with bilateral symmetry's the trip shaft rather than axial vertical, upset pole cavity position is equipped with the sp