Today, our cosmetic brush
manufacturer introduces a cosmetic brush component. An accommodating hole 51 with a circular cross-section is formed in the cylindrical conveying cylinder 50 at a position adjacent to the main cylinder 10. The accommodating hole 51 has an inner diameter, which is larger than the outer diameter formed by the outer end of the locking protrusion 72. The guide groove 54 is open at the end connected to the accommodating hole 51, so that when the locking protrusion 72 extends from the open end of the guide groove 54 into the accommodating hole 51, the rotary slider 70 with the locking protrusion 72 is allowed to rotate . A plurality of stoppers 58 are formed between the guide grooves 54 so that the stoppers 58 protrude toward the inner surface of the conveying cylinder 50. When the protrusion 72 in the hole 51 is not linearly aligned with the open end of the guide groove 54, the stopper 58 prevents the locking protrusion 72 of the rotary groove block 70 from being moved in the direction away from the main barrel 10 in the accommodating hole 51 , It was only placed by the stopper 58 and stopped. The position control device also includes a device for rotating the slider 70 to rotate. The slider rotating device rotates the slider 70 in the following manner. That is, when the slider 70 is pressed down so that the locking protrusion 72 protrudes from the open end of the guide groove 54 into the accommodating hole 51, the slider 70 is rotated so that the locking protrusion 72 is stopped by the stopper 58. When the slider 70 is pressed down in the same direction again, the slider 70 is rotated to move the locking protrusion 72 from the stopper 58 and place the protrusion 72 at the open end of the guide groove 54. The slider rotating device has a related structure similar to the existing ballpoint pen. The ballpoint pen has a single-touch button. According to the pressing action of the button, the point-shaped top end is raised or retracted from the pen barrel. That is, the slider rotating device includes a sawtooth portion 42 and an inclined surface 74. The serrated portion 42 is formed in a direction along the front end of the insertion unit 40, with its sharp top end protruding axially from the front end of the insertion unit 40 toward the main barrel 10, and the sharp bottom portion is axially recessed into the insertion unit between the sharp ends 40 front end. An inclined surface 74 is formed at one end facing each locking protrusion 72 of the insertion unit 40. In the detailed description, the serrated portion 42 is formed along the front end of the A-inserting unit 40, as shown in FIG. Reference numeral 44 in FIG. 3 denotes a plurality of axial serrations formed around the outer surface of the insertion unit 40. The axial serration 44 is inserted into the guide groove 54 to prevent the insertion unit 40 from rotating relative to the delivery cylinder 50. As shown in FIG. 4, at the end of the main cylinder 10 facing the inclined surface having the inclined surface 74 opposite to the locking projection 72, the stopper 58 and the guide projection 56 of this conveying cylinder 50 are provided.
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