Personal trimming system

1. A personal trimming system for trimming hair from a body surface, comprising:

an elongated main body having a motor and a part of a driving unit for converting a rotation of the motor into a reciprocating motion, the elongated main body having a lengthwise dimension that defines a length direction of the trimming system; and

an elongated head portion extending from an end of said main body generally along said length direction, the head portion having a driven member reciprocating generally along said length direction,

wherein the head portion is pivotably supported with respect to the main body, and a gap is provided between the main body and a step formed on a boundary between an upper portion of the head portion and a lower portion of the head portion,

wherein a restriction unit for restricting pivoting of the head portion is provided in the main body, and

wherein the restriction unit includes a torsion coil spring installed in a way that two arms thereof hold therebetween the lower portion of the head portion.

2. The personal trimming system of claim 1 , wherein a length of the head portion is about ⅕ to ⅓ of an entire length of the personal trimming system.

3. The personal trimming system of claim 1 , wherein the gap is small enough to prevent a user's skin from being pinched therebetween in a state where the head portion is pivoted to a maximum allowable angle with respect to the main body.

4. The personal trimming system of claim 1 , wherein the head portion is pivoted on the main body via the lower portion of the head portion, and a part of the lower portion of the head portion is exposed outward and a circumference thereof is smaller than those of the upper portion of the head portion and the main body.

5. The personal trimming system of claim 1 , wherein the head portion has a cutting blade and the direction of the pivoting axis of the head portion is substantially parallel to a plane defined by the cutting blade.