JPH0233704Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a dispensing cosmetic container with a locking mechanism, and more specifically, a tip cylinder for dispensing a cosmetic core (which holds the cosmetic core inside). The present invention relates to a cosmetic container in which relative rotation between a rotating member and a shaft cylinder (rotating part) can be easily locked and unlocked.

[Conventional technology and its problems]

Cosmetics such as eye shadow, eyebrow, eyeliner, etc. are produced by inserting the tip cylinder holding the cosmetic core inside into a shaft cylinder with a built-in feeding device, and then feeding out the core by relative rotation between the tip tube and the shaft cylinder. I'm starting to feel like I'm withdrawing. In particular, cosmetics such as those mentioned above are called pencils, which have a cosmetic core inside a wooden barrel, and are light and easy to use, but are inconvenient because the wooden barrel must be cut to get the core out. For this reason, pencil-shaped and lightweight dispense-type cosmetics have been developed. This type of dispensing cosmetics is composed of a small number of lightweight parts, so it has little operational resistance to rotational action, so it can be rotated very lightly, so that it can easily handle vibrations while carrying it without applying any intended artificial force. In many cases, the shaft cylinder is rotated by a light force such as contact with another object, and the core is drawn out without realizing it. This is undesirable because it causes the core to be damaged even though it is not used, and it stains the surrounding area. Even if you put a cap on the front tube, the light operating resistance itself will not change, so the core may come out inside the cap and break, or
Getting stuck will not solve the problem.

[Purpose of invention]

Therefore, the present invention has been developed for dispensing cosmetics, especially lightweight pencil-type dispensing cosmetic containers, without changing the essential characteristics of the lightweight small parts, while maintaining the light operating resistance as is, and yet easily controlling relative rotation. To provide a dispensing cosmetic container with a locking mechanism that can be locked and unlocked.

Another object of the present invention is to provide a dispensing cosmetic container with a locking mechanism in which locking and unlocking of relative rotation as described above can be achieved by attaching and detaching the cap.

[Summary of the idea]

The present invention enables the front tube and the shaft tube, which are fitted together so as to rotate relative to each other, to be able to move relative to each other in the axial direction within a certain limited range,
When the tip tube is pushed into the barrel, it is locked against relative rotation, and when it is pulled out, the lock is released, allowing the cosmetic core to be fed out. As such a locking mechanism, the present invention provides a small outer diameter part on the outer periphery of the first cylinder to be inserted into the shaft cylinder, and forms several radial protrusions there, and the other part is formed on the inner periphery of the shaft cylinder. A small inner diameter portion is provided corresponding to the small outer diameter portion, and several axial grooves are formed therein to receive the protrusion. The axial protrusions and grooves are preferably knurled and closely spaced. The amount of axial movement between the front cylinder and the shaft cylinder depends on the distance between the shoulder provided on the outer periphery of the front cylinder and the step provided on the inner periphery of the shaft cylinder so as to come into contact with this when pulled out. Determined. Normally, a travel distance of about 10 mm is sufficient, but it may be larger than this. By making the tip tube expandable and retractable with respect to the shaft tube, the overall length is shortened when the cosmetic is not in use (i.e., when locked), making it convenient to store and carry.When in use, the tip tube can be pulled out and locked. When released, the entire length becomes longer, making it easier to use.

The present invention also contemplates that such pushing in and pulling out of the leading cylinder be accomplished by means of a cap that tightly fits into the leading cylinder. If the airtight cap is placed tightly over the nose barrel, the nose barrel will be pushed into the barrel and locked before the cap is completely fitted into the nose barrel. If you pull the cap to remove it, the front barrel will be pulled out of the barrel and the lock will be released before the cap comes off.

〔Example〕

Next, several embodiments of the present invention will be described with reference to the drawings.

First, the first embodiment shown in FIGS. 1 to 3 will be described. A front tube 2 is inserted into the tip (left end in the figure) of a shaft tube 1 that is open at both ends so as to be relatively rotatable. . A portion with a small inner diameter is formed on the inner wall near the tip of the shaft cylinder 1, and several axial grooves 3 are formed in this small inner diameter portion as is clear from FIG. 3, and the rear end side of this small inner diameter portion is The stepped portion 1a continues to the large inner diameter portion on the rear end side of the shaft cylinder 1.

The front tube 2 has a large outer diameter portion 2a that is in sliding contact with the large inner diameter portion on the tip side of the shaft tube 1, and a small outer diameter portion 2b that is smaller in diameter than the large inner diameter portion on the tip side. An axial protrusion 4 is formed which is received in the axial groove 3. The axial groove 3 on the inner periphery of the shaft cylinder 1 and the axial protrusion 4 on the outer periphery of the front cylinder 2 constitute the locking mechanism of the present invention. Although the grooves 3 and the protrusions 4 of the locking mechanism are shown as being formed at relatively sparse intervals in the circumferential direction, they can be arranged closer together and increased in number. A rotated hollow body 5 is connected to the rear end of the small outer diameter portion 2b of the front cylinder 2 so as to be relatively rotatable by a complementary shape of convex and concave as shown by 2c in FIG. A well-known spiral groove is formed on the inner periphery of the
A push rod 6 having a projection 6a that engages with the spiral groove passes through the rotated hollow body 5 and the front tube 2 and extends toward the front end. The inner hole 2d of the front cylinder 2 is formed in a rotation-preventing shape, for example, a polygonal cross section, so that the push rod 6 can move forward and backward without rotating, and the cross section of the push rod 6 is also formed in a similar square rod shape. . The tip of the push rod 6 holds a cosmetic core 8, as shown with a partial cutaway.

A leaf spring 7 is interposed between the outer periphery of the rotated hollow body 5 and the inner wall of the shaft tube 1, and the shaft tube 1 and the rotated hollow body 5 rotate together in the circumferential direction. However, when an external force of a certain magnitude is applied to the axial movement, the hollow body 5 is made to be able to move independently of the shaft cylinder 1 while slidingly contacting the plate spring 7. That is, when holding the front tube 2 with one hand and holding the shaft tube 1 with the other hand and rotating them relative to each other, the rotated hollow body 5 and the shaft tube 1 rotate integrally with respect to the front tube 2. However, the front tube 2 is replaced with the shaft tube 1.
On the other hand, when it is pulled in the axial direction, the hollow body 5 overcomes the spring force of the plate spring 7 and slides in the axial direction with respect to the shaft cylinder 1 due to the engagement of the projections and depressions 2c. In order to determine the withdrawal limit of this front cylinder 2, the hollow body 5 to be rotated
The tip shoulder 5a of the shaft cylinder 1 is brought into contact with the stepped portion 1a of the inner wall of the shaft cylinder 1 (the state shown in FIG. 2). When pushing the pulled out tip tube 2 into the shaft tube 1, the rear end shoulder of the large outer diameter portion 2a of the tip tube and the tip shoulder of the small inner diameter portion of the tube 1 come into contact to determine the pushing limit (the first step). (Status shown in Figure 1).

When pushed in in this manner, if the axial protrusion 4 fits into the axial groove 3, relative rotation between the front cylinder 2 and the shaft cylinder 1 is prevented. In other words, the lock mechanism is engaged. In this state, due to non-artificial external forces such as natural vibrations, the leaf spring 7
Since the force restraining the rotated hollow body 5 cannot be broken, the rotated hollow body 5 and the front cylinder 2 cannot slide in the axial direction, and therefore the lock mechanisms 3 and 4
Since it does not come off and the leading cylinder 2 is not rotated relative to the shaft cylinder 1, the lead 8 will not be drawn out naturally.

Since the locking mechanism (axial groove 3 and protrusion 4) described above is formed at relatively sparse intervals in the circumferential direction, if the groove 3 and protrusion 4 do not coincide with each other in the axial direction, In order to find the position, you have to try turning the front tube 2 and the shaft tube 1 little by little by groping. To avoid this inconvenience, a preferred embodiment of the locking mechanism is shown in FIGS. 4 and 5. Nozzle 2
A knurled protrusion 14 is formed at the boundary between the large outer diameter portion 2a and the small outer diameter portion 2b, and correspondingly, a knurled groove 13 is formed in the small inner diameter portion of the shaft cylinder 1. Since the grooves 13 and the protrusions 14 are formed almost immediately,
When pushing the drawn-out leading cylinder 2 into the shaft cylinder 1, the locking mechanism engages with almost no need for fumbling and prevents relative rotation.

Next, FIGS. 6 and 7 show a second embodiment of the present invention. This embodiment has a locking mechanism similar to that previously described, but with the exception of unlocking (i.e., pulling out the leading barrel) and engaging (pushing in the leading barrel).
This is done by attaching and detaching the cap. This embodiment is particularly suitable for a volatile cosmetic core 8' since the cap can provide an airtight structure.

The push rod 6' in this embodiment also seals the rear end of the cosmetic core 8', so it is formed in a different structure from that in FIG. 1. That is, the inner hole at the rear end of the tip tube 2, which accommodates the cosmetic core 8', is sealed with a packing 10 to prevent volatilization. Push rod 6'
must pass through this packing 10 to advance and retreat, but the sliding contact between the push rod 6' and the packing 10
In order to prevent leakage, it is preferable to use a round bar-shaped push bar 6' rather than a square bar-shaped push bar as in the first embodiment. In order to prevent the round bar-shaped push rod 6' from twisting around due to the rotated hollow body 5, the push rod 6' is inserted into a groove pipe 9, and the projection 6'a is guided by the vertical groove 9a. 6' passes through the groove pipe 9 and the gasket 10 and is moved back and forth in a non-rotational manner. The tip of the push rod 6' is connected to a core chuck 11, and the core chuck 11 slides inside the tip tube 2 while holding the cosmetic core 8'.

As in the previous example, the front cylinder 2 is formed into a large outer diameter portion 2a and a small outer diameter portion 2b, and an axial protrusion 4 serving as a locking mechanism is formed on the outer periphery of the small outer diameter portion 2b, and a shaft for receiving this is formed. A directional groove 3 is formed in the small inner diameter portion of the shaft cylinder 1. FIG. 6 shows the locking mechanism consisting of the groove 3 and the protrusion 4 in an engaged state, and FIG. 7 shows the unlocked state. Note that the locking mechanism may be replaced by the knurled groove 13 and knurled protrusion 14 shown in FIGS. 4 and 5.

As described above, the packing 10 is fixedly installed in the rear end of the front cylinder 2, and the front end outer periphery of the groove pipe 9 is fixed to the rear inner periphery thereof. Continuing groove pipe 9
The outer periphery of the hollow body 5 to be rotated has a complementary uneven shape.
and are connected so that they can rotate relative to each other. As in the previous example, a leaf spring 7 is installed between the outer periphery of the rotated hollow body 5 and the inner periphery of the shaft cylinder 1.
is interposed, and holds the shaft cylinder 1 and the rotated hollow body 5 by spring pressure so as to rotate together, and when an external force in the axial direction that overcomes this spring pressure acts (for example, the front cylinder 2
When an artificial force is applied to pull out the shaft cylinder 1 from the shaft cylinder 1), the rotated hollow body 5 can move in the axial direction together with the front cylinder 2 while sliding against the leaf spring 7.

An airtight cap 12 is tightly fitted over the front tube 2. The tip of the front cylinder 2 has a tapered portion 2t, and the cap 12 is formed between this tapered portion 2t and the large outer diameter portion 2.
It fits tightly into the front cylinder 2 at two places, including the outer periphery of a. The inner diameter 12a of the outer cylinder of the cap 12 is dimensioned to fit tightly with the outer diameter of the large outer diameter portion 2a of the front cylinder 2,
When trying to pull out the cap 12 that is covered as shown in Figure 6, the protrusion 4 appears before the cap can be pulled out.
is designed to come out of the axial groove 3 and release the lock. Similarly, when trying to put the cap over the front tube, the front tube 2 is pushed in before its inner diameter 12a is completely fitted into the outer diameter 2a, and the protrusion 4 (or 14) is inserted into the groove 3 (or 13). It engages and becomes locked.

[Effect of idea]

As explained above, according to the present invention, an easy-to-operate relative rotation locking mechanism is basically provided in a dispensing type cosmetic container without increasing the number of parts, and the features of the pencil type (light weight, rotational operation) are provided. lightness of resistance)
Prevents cosmetic core protrusion, breakage, and damage without losing the cosmetic core.
Waste can be prevented.

In addition, according to the present invention, the front barrel, which can be extended and shortened, can be pulled out and pushed in using the airtight cap that fits tightly into the front barrel, so the lock can be engaged and released using a single operation of attaching and detaching the cap. This can be carried out unconsciously, and the excellent effect of protecting the cosmetic core without causing any inconvenience to the consumer can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing a first embodiment of the dispensing cosmetic container with a locking mechanism according to the present invention in a locked state, and FIG. 2 is a longitudinal sectional view showing the same embodiment in an unlocked state. 3 is a cross-sectional view showing the axial groove of the lock mechanism corresponding to the line in FIG. 2, and FIG. FIG. 5 is a cross-sectional view of the barrel corresponding to the line in FIG. 4, and FIG. 6 is a vertical cross-sectional view showing the second embodiment of the dispensing cosmetic container with a locking mechanism of the present invention in a locked state. 7 are partially sectional side views showing the unlocked state of the same embodiment. Main code, 1...Shaft cylinder, 1a...Step part, 2...
Lead cylinder, 2a...large outer diameter portion, 2b...small outer diameter portion, 2t...tapered portion, 3...axial groove, 4
...Axial protrusion, 5...Rotated hollow body, 5a...
Shoulder, 6...Push bar (square), 6'...Push bar (round),
7... Leaf spring, 10... Packing, 12... Airtight cap, 12a... Inner diameter, 13... Knurled groove, 14... Knurled protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A tip cylinder holding a cosmetic core therein is relatively rotatably built into the barrel, and the cosmetic core is fed out by relative rotation between the tip tube and the barrel. In the cosmetic container, the front tube 2 is configured to be able to be pulled out and pushed into the shaft tube 1 in the axial direction within a predetermined limit, and the front tube and the shaft tube are engaged to prevent relative rotation by the pushing. A locking mechanism is provided complementary to the outer periphery of the front cylinder and the inner periphery of the shaft cylinder, and the engagement of the lock mechanism is released by the drawer, allowing relative rotation between the front cylinder and the shaft cylinder. A dispensing cosmetic container with a locking mechanism. 2 The locking mechanism includes an axial protrusion 4 formed on the outer periphery of the small outer diameter portion 2b of the front cylinder 2 having a gap between the inner periphery of the shaft cylinder 1 and an inner diameter smaller than the inner periphery of the shaft cylinder 1. A dispensing cosmetic container with a locking mechanism according to claim 1, which is comprised of an axial groove 3 for receiving the protrusion formed in the portion. 3. The axial protrusions are knurled protrusions 14 formed at close intervals, and the axial grooves are correspondingly knurled grooves 13 formed at close intervals. 2. A dispensing cosmetic container with a locking mechanism according to item 2. 4. A utility model according to claim 1, wherein a cap 12 is provided on the front end side of the front tube in a tight-fitting manner, and the pushing in and pulling out is performed by attaching and detaching the cap. A dispensing cosmetic container with a locking mechanism. 5 A packing 10 is provided in the inner hole at the rear end of the front cylinder,
A dispensed cosmetic container with a locking mechanism according to claim 4 of the utility model registration claim, wherein the cosmetic core is a volatile one 8'.