JPH0238662Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention relates to a container for dispensing cosmetic cores for eyebrows, eyeliners, etc. In particular, it provides appropriate operating resistance to the dispensing of the core and prevents looseness between the constituent parts. The present invention relates to a cosmetic core dispensing container equipped with a mechanism to prevent the core from wobbling.

[Conventional technology and its problems]

BACKGROUND ART Containers for dispensing cosmetic cores such as eyebrows and eyeliners are known to consist of only three parts: a tip tube (or tapered tube), a main tube (or spiral tube), and a core chuck. This is, for example, as shown in cross section in Figure 5.
The core chuck shaft 3 has a rear end that is relatively rotatably fitted to the inner periphery of the tip of the main body cylinder 2, and has a male screw thread part 3a that engages with a female screw thread 2a formed on the inner periphery of the main body cylinder 2. ), and the cosmetic core is held at the tip of the core chuck shaft 3 by passing through a through hole formed in the tip tube 1 as a similar square hole 1a.

Although such dispensing containers are widely used because of their simple construction and low cost, they have several problems.

First, since the front tube 1 and the main tube 2 must be fitted together so that they can rotate relative to each other, there is play in the portion indicated by A in FIG. 5, which causes backlash. Second,
There is also play between the outer circumference of the rear end of the front tube 1 and the inner circumference of the tip of the main tube 2, as shown at B, causing backlash, and there is also almost no resistance during relative rotation, so even if you intend to turn it lightly, it will not turn much. If you turn it too much, the core sticks out too much, or if it turns too lightly, it feels cheap. Third
In addition, the female screw thread 2a and the male screw wire sensor 3a must be able to mesh with each other and rotate relative to each other, but since there is also a minute gap between the female screw and the male screw (indicated by C), these gaps A, B,C
This accumulation causes the tip of the core 4 to blur when used, for example, as an eyeliner, which is a serious drawback in that it is difficult to apply the desired makeup accurately.

[Purpose of invention]

The present invention basically takes advantage of the three-part structure, eliminates looseness between each part of the container, eliminates wobbling of the tip of the core, and provides appropriate initial torque or operating resistance against relative rotation to prevent excessive protrusion of the core. The purpose is to provide a dispensing container that does not feel cheap.

[Summary of the idea]

In order to achieve the above object, the present invention includes a resistance piece that is in close sliding contact with the inner peripheral surface of the main cylinder, at the rear end of the front cylinder that is relatively rotatably fitted to the inner periphery of the front end of the main cylinder.
Preferably, it is formed as a circular arc-shaped piece with elasticity, so as to provide an appropriate operating resistance to the relative rotation between the front tube and the main tube, and to prevent rattling between the front tube and the main tube. and a minute 〓
In order to prevent looseness between the helical groove on the inner periphery of the main body cylinder and the male screw helical part of the lead chuck shaft, which interlock with each other, and the resulting wobbling of the drawn out lead, there is a sliding engagement on the rear end of the male screw helical part. The mating anti-shake sliding contact piece is preferably formed as a resilient piece sized to slide against the edge of the helical groove.

According to the present invention, each part maintains a simple configuration consisting of basically three parts: the front cylinder, the main cylinder, and the core chuck shaft, and maintains the fitting precision between each part relatively loosely. It is possible to prevent wobbling between the cores, provide appropriate operating resistance so that the rotation operation is not too light, and prevent the tip of the drawn-out core from shaking or wobbling.

[Example of idea]

Embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a longitudinal sectional view of the dispensing container of the present invention (the core chuck shaft is only partially shown in cross section), Fig. 2 is an enlarged cross-sectional view along the line shown in Fig. 1, and Fig. 3 is a spiral groove and anti-shake slide. FIG. 4 is a partially enlarged view illustrating the relationship with the contact piece, and is a view showing a state in which the cosmetic core is drawn out with the main body cylinder as a cross section.

The front tube 10 has a hole through which the cosmetic core 20 is inserted, and the rear end 11 is fitted to the inner periphery of the tip of the main tube 14 for relative rotation. The front tube 10 and the main tube 14 have free play as shown by A and B in FIG.
It does not need to be finished to precise tolerances. As can be seen from FIG. 2, the rear end portion 11 is a toric body whose outer diameter is circular and whose inner diameter forms a hexagonal hole 11a. A bifurcated arc-shaped extension 12 with a small outer diameter extends rearward from this toric body.
is extended (see FIG. 4), and a resistance piece 13 with an outer diameter is protruded from the rear end of the extension part 12 and is in close sliding contact with the smooth part 15 on the inner periphery of the tip of the main body cylinder 14.
The front tube 10 including the rear end portion 11 and the extension portion 12 is made of plastic, particularly elastic plastic, and the outer diameter of the resistance piece 13 can be formed to be slightly larger than the inner diameter of the smooth portion 15 in its natural state. suitable.

The main body cylinder 14 has a female spiral groove 16 formed in its inner wall behind the smooth portion 15. The helical groove 16 is shown schematically in FIGS. 1 and 4, but is shown enlarged in FIG. Main body tube 1
4 and the front cylinder 10 are fitted to each other so as to be able to rotate relative to each other at a fitting concave and convex portion 17.

The lead chuck shaft 18, which can move back and forth in a non-rotational manner within the main body cylinder 14, is formed in a hexagonal column shape similar to the cross-sectional shape of the square hole 11a of the front cylinder 11, and the lead chuck shaft 18 at the tip thereof is connected to the cosmetic core 20. hold. The cosmetic core 20 may have any shape such as a circular or elliptical cross section.

At the rear end of the core chuck shaft 18, a male screw thread part 21 (not shown in the figure) that engages with the female screw thread groove 16 is formed. As mentioned above, there is a slight gap between the protrusion of the male screw sensor part 21 and the female screw sensor groove 16.To eliminate this, the protrusion and the groove should be precisely and immediately engaged, and smoothly relative to each other. It is technically and economically unrealistic to provide a precision finish that allows rotation. Therefore, in the present invention, the anti-shake sliding contact piece 22 is attached to the rear end of the male screw center part 21 so that the outer end in the radial direction is at the third position.
As shown in the figure, the helical groove 16 is extended so as to be in sliding contact with the entire width l of the groove. Shaft 2 of sliding contact piece 22
It is preferable that the radially outer end of the sliding contact piece 22 traces a circular locus having a diameter slightly larger than the pitch circle of the helical groove. Further, the outer end in the radial direction of the sliding contact piece 22 is formed into a circular curved contour as shown in FIG.
It is preferable to make sliding contact with the edge of 6.

In the state shown in FIG. 1 in which the cosmetic core 20 is stored in the container, the sliding contact piece 22 is elastically in sliding contact with the inner circumferential wall of the main body cylinder whose diameter is smaller than the pitch circle of the helical groove. Further, the resistance piece 13 at the rear end of the front cylinder 10 is also in sliding contact with the smooth part 15 on the inner circumference of the main cylinder 14 . Therefore, when trying to turn the main cylinder 14 with respect to the front cylinder 10, a light initial torque is felt, and unlike the conventional case, the rotation is too light and the main cylinder 14 does not rotate too much and the center does not stick out too much. In addition, the front tube 10 and the main tube 1
4 is mainly prevented by the sliding contact of the resistance piece 13 with the smooth part 15, both when it is stationary and when it is rotating.
Since you won't feel any looseness between the front tube and the main tube, you can eliminate the cheap feeling. Furthermore, when applying the required amount of the core 20 to apply makeup, the core chuck shaft 18 holds the essential core even if the leading tube and the main tube are connected without play.
If there is play between the lead and the helical groove 16, the tip of the lead will blur and it will not be possible to draw fine, delicate lines.However, in the present invention, the anti-blur sliding contact piece 22 is designed as shown in Fig. 4. , the lead chuck shaft 1 is slidably engaged with the helical groove 16 at any point during lead feeding.
8 prevents wobbling, so the tip of the tip won't wobble and has a fixed feel, making it very easy to apply makeup.

[Effect of idea]

As explained above, according to the present invention, a resistance piece that prevents rattling between the leading tube and the main barrel that rotate relative to each other, and a sliding contact piece that prevents rattling between the male thread and the female thread are provided. These two parts provide appropriate initial torque at the start of relative rotation, and provide light operating resistance during rotation, eliminating the disadvantages of over-rotation. Since it is possible to prevent the problem well and give a feeling of fixation to the tip of the lead, the feeling of use can be significantly improved. Moreover,
These effects are achieved while basically retaining the advantages of the three-part structure, without the need for precise and complicated design and processing, and without substantially increasing costs, and are relatively inexpensive. Even though it is a cheap product, it has the effect of eliminating the cheap feeling and giving an image of a luxury product.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing an embodiment of the dispensing container of the present invention, Fig. 2 is an enlarged cross-sectional view taken along the - line in Fig. 1, and Fig. 3 is the relationship between the anti-shake sliding contact piece and the helical groove. FIG. 4 is a partially sectional side view of the cosmetic core in a completely unrolled state, and FIG. 5 is a vertical cross-sectional view of a conventional dispensing container. Main code, 10... Lead tube, 11... Rear end, 1
3...Resistance piece, 14...Body cylinder, 15...Smooth part, 16...Female spiral groove, 18...Lead chuck shaft, 20...Cosmetic core, 21...Male screw center part, 22...Wobble prevention Sliding contact piece.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A tip tube into which a cosmetic core is inserted, a main tube in which the rear end of the tip tube is fitted in a relatively rotatable manner and accommodated in the tip portion, and has a female spiral groove inside. , a cosmetic core dispensing container comprising a lead chuck shaft having a male screw sen section that engages with a female screw sen groove, and a lead chuck shaft that can hold a cosmetic core at its tip and move back and forth non-rotationally inside the tip tube, the rear end of the tip tube. A resistance piece 13 is provided on the inner circumferential surface of the main body cylinder in close sliding contact with the inner circumferential surface of the main body cylinder, and an anti-shake sliding contact piece 22 is provided on the rear end of the core chuck shaft to engage with a helical groove on the inner circumference of the main body cylinder. A cosmetic core feeding container. 2. The cosmetic core dispensing container according to claim 1, wherein the resistance piece is an arcuate piece that elastically slides against the inner circumferential surface of the main body cylinder. 3. The cosmetic core dispensing container according to claim 1, wherein the anti-shake sliding contact piece is a piece that comes into sliding contact with the edge of the helical groove with elasticity.