Rotary lipstick case structure

[0002] Not applicable.

[0003] Not applicable.

[0004] Not applicable.

[0005] The present invention relates generally to a lipstick, and more particularly to a rotary lipstick case structure comprising a base, a lipstick mounted on the base, and a casing for housing the lipstick. As the base is turned counterclockwise, the lipstick is extracted out of the casing. As the base is turned clockwise, the lipstick is retracted into the casing.

[0006] As shown in FIG. 1, a rotary lipstick case of the prior art comprises a tubular cover 10, and a tubular base 11 on which a lipstick 12 is mounted. The lipstick 12 is shielded by the tubular cover 10, which must be first removed before the lipstick 12 is rolled out of the tubular base 11 for coloring the lips. The tubular cover 10 is made separately from the tubular base 11 and is therefore susceptible to being misplaced or lost. In addition, the lipstick 12 is vulnerable to being deformed by the tubular cover 10 in the event that the lipstick 12 is not rolled back into the tubular base 11 after use.

[0007] The primary objective of the present invention is to provide a rotary lipstick case structure which is free of the drawbacks of the prior art lipstick case described above.

[0008] In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a rotary lipstick case structure comprising a base, an outer casing, an outer guide tube, a guide seat, and a flexible cover. The flexible cover is capable of moving up and down along with a lipstick mount.

[0009] The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.

[0010] FIG. 1 shows a perspective view of a lipstick case of the prior art.

[0011] FIG. 2 shows a perspective view of the present invention.

[0012] FIG. 3 shows an exploded perspective view of the present invention.

[0013] FIG. 4 shows another exploded perspective view of the present invention.

[0014] FIG. 5 shows a schematic view of the present invention at work.

[0015] FIG. 6 shows a longitudinal sectional view of the present invention as shown in FIG. 5.

[0016] FIG. 7 shows another schematic view of the present invention at work.

[0017] FIG. 8 shows a longitudinal sectional view of the present invention as shown in FIG. 7

[0018] As shown in FIGS. 2-8, a lipstick case structure of the present invention comprises a base 20, an upright tube 21, a rotary tube 22, a guide tube 30, a casing 40, a guide seat 50, and a flexible cover 60.

[0019] The upright tube 21 is extending uprightly from the top of the base 20 such that the upright tube 21 is fitted into the rotary tube 22.

[0020] The upright tube 21 is provided with an upright slot 23. The rotary tube 22 is provided with a spiral guide slot 24. The upright tube 21 is provided therein with a lipstick mount 25 which is provided with two projections 26. One of the projections 26 is received in the upright slot 23 while other one of the projections 26 is received in the spiral guide slot 24. The lipstick mount 25 is moved up and down by turning the rotary tube 22.

[0021] The guide tube 30 is fitted over the rotary tube 22 and is provided at the bottom end with a retaining slot 31 corresponding in location to a retaining block 27 of the top end of the base 20. The inner wall of the guide tube 30 is separated from the outer wall of the rotary tube 22. The guide tube 30 is further provided with a spiral guide slot 32.

[0022] The casing 40 is fitted over the guide tube 30 and is provided at the top end with an opening 41 through which the lipstick is moved out of the casing 40 at the time when the lipstick mount 25 is raised. The casing 40 is provided in an inner wall with an upright guide slot 42.

[0023] The guide seat 50 is disposed between the top end of the upright tube 21 and the opening 41 of the casing 40. The guide seat 50, the casing 40, and the base 20 are similar in cross sectional form, which may be of any geometric form. The guide seat 50 is capable of turning along with the casing 40. The guide seat 50 is provided with a through hole 51 corresponding in location and shape to the opening 41 of the casing 40. The guide seat 50 is provided in the outer wall of one side with a protuberance 52, which is retained in a recess 28 of the top end of the rotary tube 22 so as to enable the rotary tube 22 to turn along with the guide seat 50.

[0024] The flexible cover 60 is movably disposed between the inner wall of one side of the casing 40 and the outer wall of the guide tube 30. The flexible cover 60 is provided at the bottom end with a protrusion 61, which is slidably received in the spiral guide slot 32 of the guide tube 30. The flexible cover 60 is further provided with a protruded block 62 which is opposite to the protrusion 61 and is slidably received in the upright guide slot 42 of the casing 40. As the casing 40 and the guide tube 30 are changed in their relative position, the flexible cover 60 moves up along the spiral guide slot 32, so as to locate between the opening 41 and the through hole 51. On the other hand, the flexible cover 60 moves down to locate between the inner wall of the casing 40 and the outer wall of the guide tube 30, thereby allowing the lipstick to move through the through hole 51 and the opening 41, as shown in FIGS. 7 and 8. The flexible cover 60 of the present invention is made of a material having an appropriate flexibility, such as a plastic material having a flexibility.

[0025] As illustrated in FIGS. 5 and 6, the base 20 is turned clockwise such that the guide tube 30 is driven to turn clockwise, thereby resulting in the upward movement of the protrusion 61 of the flexible cover 60 along the spiral guide slot 32 such that the upper end portion of the flexible cover 60 obstructs the opening 41 of the casing. In the meantime, the upright tube 21 and the rotary tube 22 turn in relation to each other, thereby resulting in the downward movement of the lipstick mount 25.

[0026] As illustrated in FIGS. 7 and 8, when the base 20 is turned counterclockwise, the protrusion 61 of the flexible cover 60 moves downward along the spiral guide slot 32, thereby resulting in the departure of the upper end portion of the flexible cover 60 from the opening 41 of the casing 40. In the meantime, the lipstick mount 25 moves upward along with the relative motion of the rotary tube 22 and the upright tube 21 such that the lipstick is emerged from the casing 40 via the opening 41 of the casing 40.

[0027] The embodiment of the present invention described above is to be regarded in all respects as being illustrative and nonrestrictive. Accordingly, the present invention may be embodied in other specific forms without deviating from the spirit thereof. The present invention is therefore to be limited only by the scope of the following claims.