Curved structure of cosmetic brush with coating function

Today, our cosmetic brush manufacturer will introduce you a cosmetic brush curve structure with coating function. The brush shown in FIGS. 1B and 1C has two mutually parallel flat surfaces 119, the flat surfaces 119 are also parallel to the axis xx, and the distances between the two flat surfaces to the core 112 are the same. The distance between the two flat surfaces is d, and the two flat surfaces are connected by the rounded side edges 120 at the area of u200bu200bthe flat surface 119 that has been cut, as shown in Figure 1C, the cross section of the brush on a plane perpendicular to the axis xx It is composed of a plurality of curves 115.c, each of which is roughly a rectangle. The rectangle has a maximum length D in the direction of the axis ZZ of the maximum length, and a maximum width d in the direction of the axis YY of the maximum width. And D>1.5, the two flat surfaces do not extend to the ends 117.a and 117.b of the brush, and the cross-sections 116.a and 116.b of the brush at the ends 117.a and 117.b In a circular shape, the curve 115.c is symmetrical with respect to the axis ZZ of the maximum length and the axis Y-Y of the maximum width. Use a suitable tool, for example, to bend the core 112 by bending a metal cylinder, so that the core 112 is bent for the first time on a plane perpendicular to the flat surface 119 between the section 116a and 116.b. , In this way, make the core 112 roughly an arc of a circle, and then make the core 112 in the same plane of the end of the piece 111.1 and the center of the brush end section 118.a The time is bent for the second time, so that the center 118.b of the other end of the brush is aligned with the main axis XX of the brush just like the center 118.a of the end at that time. Through the above operations, the brush 120 of the present invention can be produced, as shown in FIGS. 1D and 1E. In these drawings, the same parts as those in FIGS. 1B and 1C are indicated by the same reference numerals as in FIGS. 1B and 1C plus 10. The brush shown in FIGS. 1D and 1E is roughly in the shape of an elongated spoon; the core 122 describes a curve C1, which is roughly an arc of a circle. However, its ends 128.a and 128.b Aligned with the axis XX, the brush has two Al flat surfaces 129.a and 129.b; one of the flat surfaces 129.a forms the back of the brush, and the other flat surface 129.b forms the hollow recess of the spoon. The flat surface is connected by the rounded side edges 120 and the envelope surface 125 of the brush is generated by a series of curves 115.c, as shown in Fig. 1C, the curve 115.c extends along the core 122; these curves are roughly rectangular, The axis ZZ of the maximum length is parallel to the rectangle at its ends 127.a and 127.b, and the brush is generated by a circular curve. The difference between FIG. 2A and FIG. 1A is that, in essence, the shape of the surface 205 of the green brush is a truncated cone. Use a trimmer to trim two smooth secant surfaces on the entire brush length (measured in the direction of the main axis XX) of the green brush shown in FIG. 1A. After such trimming, the production is shown in FIG. 2B And 2C trimmed brushes. For the parts shown in FIGS. 2B and 2C that are the same as those shown in FIG. 2A, the reference numerals used in FIGS. 2B and 2C are the same as the reference numerals used in FIG. 2A plus 10.
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