JPH11127953A - Bar-shaped cosmetic delivering container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a cup-down from arising when a pressure is applied to the tip end of a cosmetic. SOLUTION: For this bar-shaped cosmetic delivering container 1, an O ring 23 is fitted between a container main body cylinder 6 and a tip cylinder 2. This O ring 23 imparts an appropriate frictional resistance to the turning of both cylinders, and when a pressure is applied to the tip end of a bar-shaped cosmetic 10, a cup-down wherein a pressing rod 4 rotates to a female thread 27, and the bar-shaped cosmetic goes in, can be prevented from arising.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for dispensing a stick-shaped cosmetic material (lipstick, eyeline, etc.). In particular, in order to improve productivity by increasing the lead angle of the unreeling screw, even when the lead angle of the screw part is increased, the CUP is increased.
The present invention relates to a rod-shaped decorative material container improved so as to prevent a DOWN phenomenon.

[0002]

2. Description of the Related Art FIG. 4 is a sectional view showing an example of a conventional stick-shaped decorative material feeding container. The stick-shaped cosmetic material feeding container 1 shown in FIG.
Reference numeral 01 includes four parts: a front cylinder (second cylinder) 131, a container main body cylinder (first cylinder) 141 (integrated with the female screw portion 145), a push rod 151, and a tail plug 159. The stick-shaped decorative material 133 is
It is housed in the front cylinder 131 so as to be movable in the axial direction (vertical direction in the figure). The rear end (the lower end in the figure) of the rod-shaped decorative material 133 is a chuck 1 provided at the tip of the push rod 151.
53 are fitted and held.

[0003] In the inner hole of the front cylinder 131, a synchronous engagement vertical groove 137 is provided.
Are cut in the axial direction, and the groove 137 and a group of projections 157 on the outer surface of the push rod 151, which will be described later, are slidably and nonrotatably engaged in the axial direction, so that the front cylinder 131 and the push rod 151 are connected. Synchronous engagement (rotation stop) is performed. A container main body tube 141 is rotatably and coaxially fitted to the front tube 131. A female thread portion 145 is formed integrally with the inner hole of the container body tube 141. A spiral groove 147 is cut in the inner surface of the female screw portion 145, and a group of protrusions 157 on the outer surface of the push rod 151 is screwed into this groove.

[0004] A rotatable connecting portion including an annular convex portion 139 and an annular concave portion 143 is provided at a fitting portion between the container main body tube 141 and the front tube 131 so that the front tube 131 is not easily pulled out. Has become. A tail plug 159 is attached to the base end of the container body tube 141, and the upper end surface of the tail plug 159 contacts the lower surface of the large-diameter portion 155 of the push rod 151 to determine the retraction stroke end of the push rod. . On the other hand, push rod 15
The stroke end on the forward side of 1 is determined by the contact between the upper surface of the push rod large-diameter portion 155 and the lower end surface of the female screw portion 145.

[0005] On the outer surface of the push rod 151, a group of projections 157 is provided.
Are provided at a certain pitch in four rows. These projections 157 are also arranged in a spiral shape depending on the appearance, and the spiral groove 14 on the inner surface of the female screw portion 145 is formed.
7 is screwed to perform the function of a male screw. These projections 157 are linearly arranged like longitudinal ribs in the axial direction of the push rod 151, and engage with the synchronous engagement longitudinal grooves 137 formed in the inner hole of the front cylinder 131.

The operation of the container will be described. For example, when the container body tube 141 is held and fixed with the left hand finger and the front tube 131 is turned with the right hand finger, the push rod 151 rotates synchronously with the front tube 131 (the push rod protrusion 157 becomes the front tube synchronous engagement groove 137).
Because they are inside.) On the other hand, the screw portion 145 integral with the container body tube 141 does not rotate. Therefore, the push rod projection 157 engaged with the spiral groove 147 of the female thread portion 145
Moves in the axial direction while rotating along the spiral groove, and the push rod moves forward (or backward). In conjunction with the axial movement of the push rod, the stick-shaped decorative material 133 is also moved to the front end 13 of the front tube 131.
It is paid out (or retracted) from 5.

[0007]

The above-mentioned conventional stick-shaped decorative material feeding container is disclosed by the present inventor in Japanese Patent Application No. Hei 5-28975.
No. 7, which has a significant advantage in that it is extremely easy to manufacture because there is no male screw which is difficult to form on the outer surface of the push rod and the length of the female screw member is short. There is also a significant mechanical advantage in that the selection of the arrangement of the group of projections on the outer surface of the push rod makes the projections both male threads and vertical ribs.

However, there has been a need for a stick-shaped cosmetic material feeding container which has better productivity and is easy to use. The present invention
This is a dispensing container for stick-shaped cosmetic materials (lipstick, eyeline, etc.). When pressure is applied to the tip of the cosmetic material, CUP-DOW
It is an object of the present invention to provide a stick-shaped decorative material container capable of preventing N from occurring.

[0009]

In order to solve the above-mentioned problems, a stick-shaped cosmetic material feeding container of the present invention comprises a relatively rotatable container body tube and a front tube connected in an axial direction, and these tubes. A push rod slidably housed in the body in the axial direction,
A chuck for holding a stick-shaped decorative material or the like interlocked with the push rod; and a female screw part having an inner surface with a spiral groove, which rotates synchronously with the container body cylinder; the tip cylinder, the push rod or Between the chuck and the chuck, there is provided a synchronous engagement portion that engages the front cylinder and the push bar slidably and non-rotatably in the axial direction. On the outer surface of the push bar, a spiral groove of the female thread portion is provided. A male screw for screwing is provided; by relatively rotating the two cylinders, the push rod and the female thread part are relatively rotated to advance and retreat the push rod, so that the stick-shaped cosmetic material is drawn out and pulled in. A CUP-DOWN in which, when there is no O-ring described below, when pressure is applied to the tip of the rod-shaped cosmetic material, the push rod rotates with respect to the female thread and the rod-shaped cosmetic material is retracted.
The spiral angle and the lead angle of the male screw are increased to such an extent that a spiral groove is formed, and a concave groove is formed on the outer peripheral surface of the front cylinder fitted to the inner surface of the container main body cylinder. The CUP-DOWN is prevented.

[0010]

The mechanism for feeding and retracting the stick-shaped decorative material feeding container of the present invention is the same as that of the conventional stick-shaped decorative material feeding container. That is, the tip cylinder, the push rod, and the male screw rotate synchronously, and the container body cylinder, the female thread part, and the spiral groove rotate synchronously. Here, if the container main body cylinder and the front cylinder are relatively rotated (one is fixed and the other is turned), the male screw advances in the spiral groove, and the push rod and the chuck interlocked with it move forward and backward. As the chuck advances and retreats, the rod-shaped decorative material supported by the chuck is drawn out from the rod-shaped decorative material feeding container and is retracted. Further, an O-ring is provided to give an appropriate frictional resistance to the rotation between the container body cylinder and the tip cylinder, so that even when the lead angle of the spiral groove is large, an appropriate frictional resistance is given to the rotation. Therefore, when pressure is applied to the tip of the rod-shaped decorative material, the CUP-DOWN in which the push rod rotates with respect to the female screw portion and the rod-shaped decorative material is retracted does not occur.

[0011]

Embodiments of the present invention will be described below. FIG. 1 is a sectional view showing a stick-shaped decorative material feeding container according to one embodiment of the present invention.

The container 1 for feeding a stick-shaped cosmetic material shown in FIG. 1 includes a front cylinder 2, a container body cylinder 6, a female screw member 5, and a push rod 4. The container body tube 6 and the female screw member 5 may be integrated. The stick-shaped decorative material 10 is accommodated in the front cylinder 2 so as to be movable in the axial direction (vertical direction in the figure). The rear end (the lower end in the figure) of the stick-shaped decorative material 10 is fitted and held in the cavity 17 of the chuck 3 provided at the tip of the push rod 4.

A synchronous engaging vertical groove 15 is cut in the inner hole 13 of the front cylinder 2 in the axial direction. The groove 15 and a group of projections 25 on the outer surface of the push rod 4 described later are slidable in the axial direction. The cylinder 2 and the push rod 4 engage synchronously with each other (rotationally stopped).
Is done. A container body tube 6 is rotatably and coaxially fitted to the front tube 2. The female screw member 5 is fixed to an inner hole of the container main body tube 6 by a knurl 29 or the like. On the inner surface of the female screw member 5, four spiral grooves 27 are cut, and in this groove, a group of projections 2 on the outer surface of the push rod 4 are formed.
5 is screwed. The spiral groove 27 of this rod-shaped cosmetic material feeding container has a large lead angle, and when the female screw member 5 is molded by injection molding, the spiral is pulled out without rotating the core of the mold, and the molded product is naturally removed. Is rotated.

A rotatable connecting portion comprising an annular convex portion 19 and an annular concave portion 21 is provided at a fitting portion between the container main body tube 6 and the front tube 2 so that the front tube 2 is not easily pulled out. Has become. An O-ring 23 is mounted below the connecting portion in a groove 22 formed in the outer peripheral surface of the front cylinder 2.
It plays a role of giving an appropriate frictional resistance to the rotation between the housing and the container body tube 6. If there is no frictional resistance, when the lead angle of the screw is large, when pressure is applied to the tip of the rod-shaped decorative material 10 at the time of makeup, the push rod 4 rotates with respect to the female screw member 5 and the rod-shaped decorative material is rotated. Material 10 retracts (CU
P-DOWN). Such a CUP-DOWN
Can be prevented by the O-ring 23. The CUP-DOWN prevention effect of the O-ring is the same even when the push rod has a normal male screw. Further, it is possible to prevent the front cylinder 2 and the container main body cylinder 6 from becoming uneven. An end flange 45 is provided at the base end of the container body tube 6. The end flange upper end surface 43 is a large diameter portion 39 of the push rod 4 and a lower end surface 4.
1 to determine the retraction stroke end of the push rod. On the other hand, the stroke end of the push rod 4 on the forward side is determined by the contact between the upper end face 37 of the large push rod diameter portion 39 and the lower end face 31 of the female screw member 5.

On the outer surface of the push rod 4, projections 25 are provided in four rows at a certain pitch. The reason why the projection 25 has an oval shape is to prevent the push rod 4 from rattling. These projections 25 are also arranged in a spiral shape depending on the appearance, and engage with the spiral groove 27 on the inner surface of the female screw member 5 to perform the function of a male screw. These projections 25 are linearly arranged in the axial direction of the push rod 4 like vertical ribs, and engage with the synchronous engagement vertical grooves 15 formed in the front cylinder inner hole 13.

The operation of this container will be described. For example, when the container main body cylinder 6 is fixed by holding the left hand finger and turning the front cylinder 2 with the right hand finger, the push rod 4 rotates synchronously with the front cylinder 2 (the push rod projection 25 is in the front cylinder synchronous engagement groove 15). Because it has penetrated). On the other hand, the female screw member 5 fixed to the container body cylinder 6 does not rotate. Therefore, the spiral groove 2 of the female screw member 5
The push rod projection 25 engaged with the shaft 7 moves in the axial direction while rotating along the spiral groove, and the push rod advances (or retreats). In conjunction with the axial movement of the push rod, the stick-shaped decorative material 1
0 is also fed (or retracted) from the tip end of the front cylinder 2
You.

1 is provided with a clutch mechanism comprising a notch A33 and a notch B35 at the upper and lower portions of the push rod 4. As shown in FIG. Both notches are provided in the shape of a window penetrating the push rod 4 in the lateral direction. Both cutouts extend in the axial direction and extend over the push rod 4 where approximately five protrusions 25 are present.

The position of the notch A33 is a position where the push rod 4 overlaps the female screw member 5 when the push rod 4 is at the retreat limit (the state of FIG. 1). The position of the notch B35 is determined when the push rod 4 is at the forward limit.
This is a position overlapping with the female screw member 5.

FIG. 2 is a sectional view showing an embodiment of a stick-shaped decorative material feeding container according to the second embodiment of the present invention. Parts similar to those of the stick-shaped cosmetic material feeding container in FIG. 1 are denoted by the same reference numerals. The stick-shaped decorative material feeding container of the embodiment of this figure includes two relatively rotatable cylinders connected in the axial direction, and a push rod slidably accommodated in these cylinders in the axial direction. A chuck interlocking with the push rod and holding a rod-shaped decorative material or the like; and a female screw member having an inner surface with a spiral groove and rotating in synchronization with one of the two cylinders (first cylinder). A tip cylinder and a push rod are slidable in the axial direction on the inner surface of one of the two cylinders (the second cylinder) and the outer surface of the push rod or chuck. And a synchronous engaging portion for non-rotatable engagement is provided, and on the outer surface of the push rod, an external thread is screwed into the spiral groove of the internal thread member; By rotating the push rod and the female screw member relatively, the push rod advances and retreats to form a rod. A rod-shaped decorative material feeding container for feeding and retracting a material; a stroke end setting portion that defines an advance limit and / or a retreat limit (stroke end) of the push rod; And a clutch portion provided on the outside, which is rotatable relative to the spiral groove of the female screw member, and biases the push rod in a direction in which the male screw and the spiral groove are screwed.

The dispensing / retracting mechanism of the stick-shaped decorative material feeding container of this embodiment is the same as the stick-shaped decorative material feeding container of the first embodiment described above. The male screw on the outer surface of the push rod may be a group of protrusions arranged in a spiral shape or a normal male screw.

FIG. 3 is a sectional view showing a stick-shaped decorative material feeding container according to another embodiment of the present invention.

3 is different from the stick-shaped decorative material feeding container of FIG. 2 in the following point. That is, a normal male screw 67 is cut on the outer surface of the push rod 4 of the stick-shaped decorative material feeding container of this embodiment. Also, the inner hole 13 of the front cylinder 2
, A synchronous engagement vertical groove 65 is cut in the axial direction. The synchronous engagement vertical groove 65 engages with a synchronous engagement rib 69 provided so as to protrude from the outer surface of the chuck 3 so as to be slidable in the axial direction and non-rotatably, so that the push rod 4 and the front cylinder 2 are engaged. And will be detent.

[0023]

As is apparent from the above description, by increasing the lead angle of the female thread portion of the container body, it is possible to pull out the mold core without rotating it by injection molding and rotate the molded product naturally. Is applicable,
Mass production can be easily performed, and significant cost reductions are possible. In addition, by providing an O-ring that gives an appropriate frictional resistance to the rotation between the container body cylinder and the front cylinder, when pressure is applied to the tip of the rod-shaped decorative material, the push rod rotates with respect to the female thread part. CUP-DO rod-shaped cosmetic material is retracted
Prevent WN phenomenon. Therefore, it is possible to provide an easy-to-use stick-shaped cosmetic material container having a quick and smooth dispensing (or retraction) stroke.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a stick-shaped decorative material feeding container according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view showing one embodiment of a stick-shaped decorative material feeding container according to a second embodiment of the present invention.

FIG. 3 is a sectional view showing a stick-shaped decorative material feeding container according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view showing an example of a conventional stick-shaped decorative material feeding container.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 rod-shaped cosmetic material feeding container 2 tip cylinder 3 chuck 4 push rod 5 female screw member 6 container body cylinder 10 rod-shaped cosmetic material 11 distal opening 13 inner hole 15 synchronous engagement vertical groove 17 cavity portion 19 annular convex portion 21 annular concave portion 22 groove 23 O Ring 25 Projection 27 Spiral groove 29 Knurl 31 Female screw member lower end 33 Notch A 35 Notch B 37 Large diameter upper end surface 39 Large diameter portion 41 Large diameter lower end 43 End flange upper end 45 End flange

Claims (1)

[Claims] 1. A relatively rotatable container body cylinder and a front cylinder connected in an axial direction, a push rod slidably accommodated in these cylinders in an axial direction, and interlocked with the push rod. A chuck for holding a stick-shaped decorative material or the like; and a female thread portion having an inner surface with a helical groove, which rotates synchronously with the container main body tube; and between the front tube and the push rod or the chuck. A synchronous engaging portion for engaging the tip cylinder and the push rod slidably and non-rotatably in the axial direction, and an external thread provided on an outer surface of the push rod for engaging with the spiral groove of the female thread portion. A rod-shaped cosmetic material dispensing container for relatively rotating the two cylinders to relatively rotate the push rod and the female thread portion to advance and retreat the push rod, and to thereby withdraw and retract the rod-shaped cosmetic material. If there is no following O-ring, The lead angle of the spiral groove and the male screw is increased to such an extent that the push rod rotates with respect to the female thread portion when the end is pressed and the bar-shaped decorative material is retracted, and the lead angle of the male screw is increased. A concave groove is formed on the outer peripheral surface of the front cylinder to be fitted to the inner surface, and an O-ring is mounted in this groove so that the CUP-DO
A stick-shaped decorative material feeding container, wherein WN is prevented.