Abstract: A connecting device may have a tooth-shaped jacket, a locking body internally of the tooth-shaped jacket, a plurality of balls, a spring, and a spring base. The locking body has a rear end with an annular groove and has a neck with a plurality of spherical recesses containing the balls. Radial positioning between the locking body and the tooth-shaped jacket is realized through the balls. The spring is connected between the tooth-shaped jacket and the spring base and axial positioning between the spring base and the locking body is realized through a snap ring in the annular groove.

Abstract: The present utility model discloses a connecting structure-containing connection device of an electric tool for connection with an angle adjuster, comprising a tooth-shaped jacket, a locking body, a plurality of steel balls, a spring, and a spring base, characterized in that the tooth-shaped jacket is internally equipped with the locking body; a plurality of spherical grooves are emplaced around the circumference of the neck of the locking body and steel balls are contained in the spherical grooves; the radial positioning between the locking body and the tooth-shaped jacket is realized through the steel balls; an annular groove is present at the rear end of the locking body and the annular groove is internally equipped with a snap spring; the rear end of the locking body is equipped with a spring base, the axial positioning between the spring base and the locking body is realized through the snap spring, and the spring base is connected to one end of the spring and the other end of the spring presses against

Abstract: A connecting structure-contained connecting device of an electric tool for connection with an angle adjuster, comprises a tooth-shaped jacket which is internally equipped with a locking body, a steel ball, a spring and a spring base; the locking body is connected to the spring base through the spring. When the spring on the spring base is pushed to extend to extrude the steel ball, the axial fixation of the angle adjuster can be quickly and conveniently realized through the connecting device.

Abstract: A belt fastener has a fastener body, a hook-shaped tongue and a triangular groove. The fastener body is embedded in a slot on the tail end of the housing of the electric tool through the hook-shaped tongue. The hook-shaped tongue and the triangular groove ensure stable embedding state of the fastener. The fastener can be conveniently removed by pressing the hook-shaped tongue. The fastener can be randomly embedded on the right or right side of the housing according to handedness, and then suspended and fastened at any position on the belt of a user.