JP2707485B2 - Feeding mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispensing mechanism used for a container for accommodating a stick-shaped cosmetic such as lipstick, eyeshadow, etc., and more particularly to a dispensing mechanism having improved productivity.

[0002]

2. Description of the Related Art Conventionally, stick cosmetic containers such as lipsticks have been
A spiral dispensing mechanism for dispensing a stick-shaped cosmetic by performing a rotating operation was provided therein. In this spiral feed-out mechanism, the holding cylinder and the rod-shaped cosmetic material are moved up and down by relative rotation of a holding cylinder holding the rod-shaped cosmetic material and a spiral tube in which a spiral groove is screwed. Therefore, in addition to the holding cylinder and the spiral cylinder, at least a guide member that guides the holding cylinder in a vertically slidable manner so as not to rotate is required. Further, a sleeve, an outer cylinder, a middle cylinder, a cap, and the like are required as the exterior body, and a large number of cylinders are required to constitute a stick-shaped cosmetic delivery container. Therefore, according to Japanese Utility Model Laid-Open No. 5-5018, etc., a plurality of sliding grooves are engraved on the inner wall of the sleeve as the exterior body in the axial direction, and the sleeve and the guide member are integrally formed to form the rod-shaped cosmetic container. A configuration in which the number of parts is reduced to reduce the manufacturing cost has been proposed.

[0003]

In the case of this construction, since the sliding groove is formed in the inner wall of the sleeve, the contact area between the rod-shaped cosmetic and the inner wall of the sleeve is reduced, so that the rod-shaped cosmetic can slide up and down. This has the effect of reducing the sliding resistance at the time and preventing breakage of the bar-shaped cosmetic. However, the threaded piece protruding from the holding cylinder holding the rod-shaped cosmetic material is screwed into the spiral groove of the spiral cylinder to move the rod-shaped cosmetic material up and down, but there is no operation between the threaded piece and the spiral groove. In order to improve the feeling, a certain amount of play was provided. Therefore, in the initial stage at the time of the operation of feeding out the stick-shaped cosmetic material, there occurs a stage in which the stick-shaped cosmetic material does not move up and down by the play of the screwing piece and the spiral groove, and runs idle. This idling markedly hindered the feeling of use of the stick-shaped cosmetic dispensing container.

[0004] In addition, during assembly, positioning is required to make the ridge of the holding cylinder protrude into the sliding groove of the sleeve, which has been an obstacle to reducing assembly costs by automating assembly.

[0005]

SUMMARY OF THE INVENTION A holding cylinder 2 in which a rod-shaped cosmetic material 1 is fitted and held, a sleeve 5 in which the holding cylinder 2 is rotatably mounted up and down, and a sleeve 5 A spiral knurl 6 having a number of fine grooves formed spirally around the inner wall of the sleeve 5, comprising a base cylinder 8 movably and irremovably connected, On the side wall, a multi-threaded male screw 7 screwed with the spiral knurl 6 of the sleeve 5 is screwed, and between the lower surface of the holding tube 2 and the upper surface of the base tube 8, each is non-rotatably slidable up and down. An engaging means for engaging is provided. The present invention is the feeding mechanism configured as described above.

[0006]

When the sleeve 5 and the base cylinder 8 are rotated relative to each other, the holding cylinder 2 which is non-rotatably and vertically slidably engaged with the base cylinder 8 by the engagement means also rotates relative to the sleeve 5. The holding cylinder 2 slides up and down inside the sleeve 5 by the screwing action because the multi-threaded male screw 7 provided on the side wall is screwed into the spiral knurl 6 on the inner wall of the sleeve 5.

The spiral knurl 6 of the sleeve 5
Is a multi-helical spiral as if countless spiral grooves were screwed around the entire inner wall of the sleeve 5.
The multi-threaded male screw 77 that is screwed into the helical knurl 6 of the sleeve 5 can be screwed into the spiral knurl 6 at any position.

[0008]

Embodiment 1 A holding cylinder 2 holding the lower end of a stick-shaped cosmetic 1 such as a lipstick or an eye shadow has an engaging rod 3 hanging down from the lower end. A rotation preventing piece 4 protrudes from an outer wall at a lower end of the engaging rod 3. The holding cylinder 2 is rotatably housed in a sleeve 5 so as to be vertically slidable.

On the inner wall of the sleeve 5, a fine groove is formed in a knurled shape on the entire circumference, and the groove spirals around the inner wall to form a spiral knurl 6. On the outer wall of the holding cylinder 2, a multi-threaded male screw 7 screwed with the helical knurl 6 of the sleeve 5 is screwed, and the relative rotation of the sleeve 5 and the holding cylinder 2 causes the spiral knurl 6 to rotate. The holding cylinder 2 and the bar-shaped cosmetic 1 are moved up and down by a screwing action with the multi-threaded male screw 7. Below the spiral knurl 6, the spiral knurl 6 is not screwed, and the inner diameter is slightly larger than the root diameter of the spiral knurl 6. The lower end of the sleeve 5 is
Is rotatably fitted to the connecting portion 9 provided at the upper part of the.

An engagement groove 10 is formed in the side wall of the connecting portion 9 of the base cylinder 8, and the engagement groove 1 is formed in a lower end of the sleeve 5.
An engagement rib 11 that engages with the sleeve 5 protrudes inward from the outside, and the sleeve 5 and the base cylinder 8 are rotatably connected so as not to fall off. A guide tube 12 is provided upright on the upper surface of the base tube 8. The engaging rod 3 of the holding cylinder 2 enters the guide cylinder 12. And, on the side wall of the guide cylinder 12,
A guide groove 13 that is engaged with the rotation preventing piece 4 of the engaging rod 3 and guides the holding cylinder 2 so as to be non-rotatably vertically slidable is bored in the axial direction. As a result, by rotating the base cylinder 8 and the sleeve 5 relatively, the sleeve 5 and the holding cylinder 2 screwed to the spiral knurl 6 of the sleeve 5 rotate relatively,
The holding cylinder 2 slides up and down by the screwing action.

The means for engaging the engaging rod 3 and the guide cylinder 12 is such that the cross-sectional shape of the engaging rod 3 is a non-circular shape other than a circle, and the inner shape of the guide cylinder 12 is similar to the engaging rod 3. For example, any means can be used as long as the engaging rod 3 and the guide cylinder 12 are non-rotatably and vertically slidably engaged. Needless to say, the arrangement of the engaging rod 3 and the guide cylinder 12 can be reversed. Further, as shown in FIG. 6 and FIG.
By disposing a sliding cylinder 19 that is slidably engaged with the guide cylinder 12 in a non-rotatable manner, the length of the guide cylinder 12 can be reduced, and the overall length of the feeding mechanism is reduced. it can. A concave groove 14 is provided above the engaging groove 10 of the connecting portion 9 of the base cylinder 8, and an O-ring-shaped sliding resistor 15 slidably in contact with the inner wall of the sleeve 5 is wound around the concave groove 14. In this case, sliding resistance occurs when the base cylinder 8 and the sleeve 5 rotate relative to each other, and the operational feeling of the stick-shaped cosmetic container can be improved.

[0012]

Embodiment 2 A holding tube 2 holding the lower end of a stick-shaped cosmetic 1 such as a lipstick or an eye shadow has a guide tube 12 hanging down from the lower end. The rotation preventing piece 4 protrudes from the inner wall of the lower end of the guide tube 12. The holding cylinder 2 is rotatably housed in a sleeve 5 so as to be vertically slidable.

At the lower portion of the inner wall of the sleeve 5, a fine groove is formed in a knurled shape on the entire circumference, and the groove spirals around the inner wall to form a spiral knurl 6. On the lower outer wall of the guide cylinder 12 of the holding cylinder 2, a multi-threaded male screw 7 screwed with the spiral knurl 6 of the sleeve 5 is provided.
The sleeve 5 and the holding cylinder 2 rotate relative to each other, so that the holding cylinder 2 and the bar-shaped cosmetic 1 move up and down by the screwing action of the spiral knurl 6 and the multi-threaded male screw 7. . The spiral knurl 6 is not screwed above and below the spiral knurl 6, and the inner diameter is slightly larger than the valley diameter of the spiral knurl 6 below. The lower end of the sleeve 5 is rotatably fitted to a connecting portion 9 provided on an upper portion of the base cylinder 8.

An engagement groove 1 is provided on a side wall of the connecting portion 9 of the base cylinder 8.
0 is engraved on the lower end of the sleeve 5.
The engaging rib 11 that engages with
The sleeve 5 and the base cylinder 8 are rotatably connected so as not to fall off. The engaging rod 3 is provided upright on the upper surface of the base cylinder 8.
The engaging rod 3 has penetrated into the guide cylinder 12 of the holding cylinder 2. A guide tube 12 is provided on the side wall of the engagement rod 3.
A guide groove 13 is engaged with the rotation preventing piece 4 to guide the holding cylinder 2 so as to be non-rotatably slidable up and down in the axial direction. As a result, by rotating the base cylinder 8 and the sleeve 5 relatively, the sleeve 5 and the holding cylinder 2 screwed to the helical knurl 6 of the sleeve 5 rotate relative to each other. It works.

The means for engaging the engaging rod 3 and the guide cylinder 12 is such that the cross-sectional shape of the engaging rod 3 is a non-circular shape other than circular, and the inner shape of the guide cylinder 12 is similar to the engaging rod 3. For example, any means can be used as long as the engaging rod 3 and the guide cylinder 12 are non-rotatably and vertically slidably engaged. Needless to say, the arrangement of the engaging rod 3 and the guide cylinder 12 can be reversed. A concave groove 14 is provided above the engaging groove 10 of the connecting portion 9 of the base cylinder 8, and an O-ring shaped sliding resistor 15 slidably in contact with the inner wall of the sleeve 5 is wound around the concave groove 14. In this case, sliding resistance occurs when the base cylinder 8 and the sleeve 5 rotate relative to each other, and the operational feeling of the stick-shaped cosmetic container can be improved.

[0016]

Embodiment 3 A holding cylinder 2 holding the lower end of a stick-shaped cosmetic 1 such as a lipstick or an eye shadow has a thin plate-shaped rotation transmitting piece 16 hanging at the lower end. The rotation transmission piece 16 is formed of a synthetic resin such as polypropylene (PP) that is resistant to repeated bending, and is alternately hinged into a mountain fold 17 and a valley fold 18 and folded. The tip of the rotation transmitting piece 16 is
It is planted on the upper surface. The holding cylinder 2 is provided with a sleeve 5
It is rotatably mounted inside so that it can slide up and down.

On the inner wall of the sleeve 5, fine grooves are engraved in a knurled shape all around, and the grooves spirally turn the inner wall to form a spiral knurl 6. Also,
On the outer wall of the holding cylinder 2, a multi-threaded male screw 7 screwed with the spiral knurl 6 of the sleeve 5 is screwed.
The holding cylinder 2 and the rod-shaped cosmetic 1 are moved up and down by the screwing action of the spiral knurl 6 and the multi-threaded male screw 7 by relative rotation of the holding cylinder 2 and the holding cylinder 2. Below the spiral knurl 6, the spiral knurl 6 is not screwed, and the inner diameter is slightly larger than the root diameter of the spiral knurl 6. The lower end of the sleeve 5 is rotatably fitted to a connecting portion 9 provided on an upper portion of the base cylinder 8.

An engagement groove 1 is provided on a side wall of the connecting portion 9 of the base cylinder 8.
0 is engraved on the lower end of the sleeve 5.
The engaging rib 11 that engages with
The sleeve 5 and the base cylinder 8 are rotatably connected so as not to fall off. As a result, by rotating the base cylinder 8 and the sleeve 5 relatively, the holding cylinder 2 connected to the base cylinder 8 by the rotation transmitting piece 16 is formed.
Also follows the base cylinder 8, and the sleeve 5 and the holding cylinder 2 screwed to the spiral knurl 6 of the sleeve 5 rotate relatively,
The holding cylinder 2 slides up and down by the screwing action.

The holding cylinder 2, the rotation transmitting piece 16 and the base cylinder 8 can be formed integrally. In this case, the stick-shaped cosmetic dispensing container can be composed of two parts.

[0020]

According to the present invention, as described above, the sleeve 5
A spiral knurl 6 in which innumerable fine grooves are spirally engraved is screwed around the entire inner wall of the holding cylinder 2, and a multi-threaded male screw 7 screwed with the spiral knurl 6 of the sleeve 5 on the side wall of the holding cylinder 2. Is provided between the lower surface of the holding cylinder 2 and the upper surface of the base cylinder 8. It can be screwed to the spiral knurl 6 at any position of the sleeve 5. Accordingly, there is no need for positioning when assembling the holding cylinder 2 to the sleeve 5, and automation of assembly can be easily performed.

Since the spiral knurl 6 is finely screwed around the inner wall of the sleeve 5, the multi-threaded male screw 7 of the holding cylinder 2 is always screwed to a plurality of spiral knurls 6. Therefore, play in the sleeve 5 of the holding cylinder 2 can be minimized. Moreover, since the multi-threaded male screw 7 of the holding cylinder 2 is screwed into a plurality of the spiral knurls 6 of the sleeve 5, the groove depth of the spiral knurl 6 can be reduced, and the sleeve 5 can be made thin. The stick-shaped cosmetic 1 thicker than the conventional one can be stored with respect to the outer diameter of the container.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a feeding mechanism according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional perspective view of a sleeve according to the first embodiment of the present invention.

FIG. 3 is a front sectional view of a feeding mechanism according to a second embodiment of the present invention.

FIG. 4 is a front sectional view of a feeding mechanism according to a third embodiment of the present invention.

FIG. 5 is a front sectional view showing a state in which the stick cosmetic of Example 3 of the present invention is drawn out.

FIG. 6 is a front sectional view of a feeding mechanism according to another embodiment of the present invention.

FIG. 7 is a front cross-sectional view of a state in which a stick-shaped cosmetic according to another embodiment of the present invention is drawn out.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Rod-shaped cosmetic material 2 Holding cylinder 3 Engagement rod 5 Sleeve 6 Spiral knurl 7 Multi-threaded male screw 8 Base cylinder 12 Guide cylinder 16 Rotation transmission piece 17 Mountain fold 18 Valley fold

Continuation of the front page (56) References Japanese Utility Model Showa 61-177528 (JP, U) Japanese Utility Model Showa 55-88971 (JP, U) Japanese Utility Model Showa 52-148285 (JP, U) Japanese Utility Model Showa 51-122838 (JP, U.S.A.) , U) JP 48-8228 (JP, B1)

Claims (3)

(57) [Claims] 1. A holding cylinder 2 in which a stick-shaped cosmetic 1 is fitted and held.
A sleeve 5 in which the holding cylinder 2 is rotatably mounted vertically slidably, and a base cylinder 8 rotatably connected to the lower end of the sleeve 5 so as not to fall off. A spiral knurl 6 in which innumerable fine grooves are spirally engraved is screwed around the entire upper part, and a sleeve 5 is provided on the side wall of the holding cylinder 2.
A multi-threaded male screw 7 to be screwed with the spiral knurl 6 is screwed into one of the lower part of the holding cylinder 2 and the upper part of the base cylinder 8.
The engaging rod 3 is erected or suspended, and the guide cylinder 12 is erected or suspended on the other side. A feeding mechanism characterized by providing a combining means. 2. A holding cylinder 2 in which a stick-shaped cosmetic 1 is fitted and held.
A sleeve 5 in which the holding cylinder 2 is rotatably mounted vertically slidably, and a base cylinder 8 rotatably connected to the lower end of the sleeve 5 so as not to fall off. A spiral knurl 6 in which innumerable fine grooves are spirally engraved around the lower part is screwed, and the engaging rod 3 is erected or hung on one of the lower part of the holding cylinder 2 and the upper part of the base cylinder 8. The other end of the holding cylinder 2 is provided between the engaging rod 3 and the guide cylinder 12 so as to be non-rotatably and vertically slidably engaged with each other. A multi-threaded male screw 7 screwed to the spiral knurl 6 of the sleeve 5 is provided on the engaging rod 3 hanging down from the lower end or on the outer wall of the lower end of the guide cylinder 12. 3. A holding cylinder 2 in which a stick-shaped cosmetic 1 is fitted and held.
A sleeve 5 in which the holding cylinder 2 is rotatably mounted vertically slidably, and a base cylinder 8 rotatably connected to the lower end of the sleeve 5 so as not to fall off. A spiral knurl 6 in which innumerable fine grooves are spirally engraved around the lower part is screwed, and a sleeve 5 is provided on a side wall of the holding cylinder 2.
A multi-threaded male screw 7 to be screwed with the spiral knurl 6 is screwed, and an elongated plate is hinge-folded on the lower surface of the holding cylinder 2 and the upper surface of the base cylinder 8 by folding in a mountain 17 and a valley 18. Transmission piece 1
A feeding mechanism characterized in that both ends of 6 are fixed.