JPH0131133Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a cartridge-type cosmetic bar, and in particular protects a thin and soft cosmetic core used for eyeliner, eye shadow, etc. from breakage and abrasion. The present invention relates to a cartridge type cosmetic bar having a simple structure and a slender cartridge suitable for stably using the core to the end.

[Prior art and its problems] Cartridge-type bar-shaped cosmetics consist of a cartridge containing a cosmetic core, and a container body (or holder body) to which the cartridge is easily replaced and allows the cosmetic core to be fed and retracted. It basically consists of two parts, but various types have been proposed so far.

One of them is to provide a spring means inside the cartridge to ensure the connection with the container body, especially its push rod (or sliding shaft). In order to incorporate the spring means in such cartridges, the cartridge itself must be made large and have a complicated structure.However, the space occupied by the cosmetic core is limited, so it is difficult to use despite the large size of the cartridge. There is a problem that only short cores can be used, and furthermore, the price of the cartridge itself tends to be high, which is not desirable. 1 of this format
An example is the dispensing container shown in Utility Model Application No. 130614/1983. The cartridge cylinder used in this dispensing container is provided with an elastic locking piece inside the rear end for mechanical connection with the sliding shaft provided inside the container body, and there is no room for the locking piece to open and expand. Since recesses, steps, etc. must be formed on the inner wall of the cartridge cylinder in order to manufacture the cartridge cylinder, there is a drawback that the cartridge cylinder has to be thick and large in diameter. Furthermore, since an elastic body (compression coil spring) is included inside this locking piece, the structure becomes extremely complicated and manufacturing becomes expensive.

In addition to this, there have been attempts to incorporate a feeding mechanism into the cartridge itself, but these have many problems, such as complicating the structure, requiring high precision in manufacturing, and increasing prices, with few advantages.

Contrary to this trend toward complication, there are attempts to simplify the cartridge itself as much as possible. One example is a cartridge (or refill) that consists of only a cylindrical body and a cosmetic core directly housed within the cylinder, as seen in Japanese Utility Model Application Publication No. 51-153172.
Specifically, this type of refill is formed by directly filling a flexible cosmetic core into a small diameter polypropylene pipe with both ends open, and is called a PP pipe filled core. , which satisfies the purpose of simplification well, and since it itself is thin, it has the advantage of making the holder slim as well.

However, in this type of directly filled core, the forward movement of the pipe is stopped and the rear end of the filled core is directly pushed with a push rod or sliding shaft, breaking the frictional force between the core and the pipe and moving the core forward. When retracting, the pipe is pulled backwards, and the friction between the pipe and the core once broken is reused to pull the core back. The core is relatively soft, so as you move forward and backward repeatedly,
The disadvantage is that the periphery becomes worn out or crumbles, and it no longer fits tightly enough to the inner circumference of the pipe, and eventually the core no longer holds together even when the pipe is pulled back, or in extreme cases, the core may fall out from the tip of the pipe. Even if it does not fall out, the support of the lead by the pipe becomes loose, causing the problem that the lead rattles or shakes when applying makeup, making it difficult to use it stably.

[Purpose of the invention] The present invention was made in order to solve all of these conventional problems.The purpose of the invention is to reduce the number of parts without using complicated parts such as spring means and feeding mechanisms in the cartridge. In addition to simplifying the structure of the cartridge by minimizing the stress, the support of the core within the cartridge does not become loose or wobbling even after repeated use, and the core is held stably without change. To provide a cartridge-type rod-shaped cosmetic product comprising a relatively slender cartridge having sufficient strength to protect a core from scratches and easily attachable to and detachable from a connecting body combined with a push rod of a holder body.

[Summary of the invention] In order to achieve this purpose, the present invention has a push rod that is moved linearly (non-rotationally) forward and backward by a conventionally known feeding mechanism of the holder main body, and that the push rod is moved by a constant friction force. A simple cylindrical cartridge is frictionally held on the distal end side of the friction coupling body. The cartridge itself consists of a thin-walled cartridge tube, preferably made of stainless steel, open at both ends, with a gasket, preferably made of elastic rubber, disposed on its inner periphery in sliding contact with a certain frictional force capable of breaking. The cosmetic core is firmly held on the tip side of the pack,
The core itself should not be in direct sliding contact with the cartridge cylinder or be worn out.

The push rod, which is connected to the cartridge through the frictional coupling, can move forward and backward with the cartridge, but a shoulder is formed inside the holder body to prevent the cartridge cylinder and the frictional coupling from moving forward. When the cartridge cylinder and the frictional coupling body collide, the push rod breaks the gripping force of the frictional coupling body and moves forward by itself, causing the gasket inside the cartridge to also break the frictional force between it and the inner periphery of the cartridge cylinder. , the tip of the cosmetic core protrudes from the holder body.

When the push rod is moved back, the frictional forces between the push rod and the friction coupling body, between the friction coupling body and the cartridge tube, and between the cartridge tube and the packing are utilized again, and the cosmetic core is moved back by the amount that the push rod is moved back.

[Example] Next, an example of the present invention will be described with reference to the drawings. FIG. 1 shows a longitudinal section of a cartridge-type bar-shaped cosmetic product of the present invention in which a cartridge C (FIG. 2) consisting of a cosmetic core 12, a cartridge tube 13, a core chuck 14, and a gasket 15 is inserted.

The shaft tube 1 is a cylindrical body with only one end open, into which a spiral pipe 2 having a spiral carved on its inner circumferential wall is fitted and integrated. A block 5 is fitted into the open end of the shaft cylinder 1 so as to be relatively rotatable, and a slot 4 is formed in the inner periphery of the rear end of the block in the axial direction.
A groove pipe 3 having a groove is fitted and fixed. There is a bulge 3a at the rear end of the groove pipe 3, and the bulge 3a
A spring 6 and packing B are arranged between the rear end of the spiral pipe 2 and the rear end of the spiral pipe 2. By this spring 6,
Block 5 is always attracted to barrel 1. A push rod 8 having a protrusion 7 projecting outward from the slot 4 and engaging with the helix of the helical pipe 2 extends through the slot pipe 3 beyond the tip of the block 5.

A removable tip tube 9 is attached to the tip of the block 5 by screwing or fitting. The front tube 9, the block 5, and the shaft tube 1 constitute a holder body.
When the shaft tube 1 and the spiral pipe 2 are rotated relative to the integrated front tube 9 and block 5, the push rod 8 is guided by the slot 4 of the groove pipe 3 and is moved forward or backward in a non-rotational manner. The front tube 9 is a cartridge (Fig. 2)
can be removed when replacing. The front tube 9 has a large-diameter hole 9a, a medium-diameter hole 9b, and an exit hole 9c, and a shoulder portion 9d is formed between the large-diameter hole and the medium-diameter hole. A shoulder is also formed between the medium diameter hole and the exit hole (see Figure 4).

The push rod 8 is combined with a friction coupling body 10 that connects the push rod 8 and a cartridge cylinder (or also referred to as a core guide) 13 of the cartridge C by frictional force. The frictional coupling body 10 includes a gripping portion 10a having elasticity at its rear end to grip the push rod 8 with frictional force, and a through hole 10b forward of the grip portion 10a through which the push rod 8 is inserted.
and a cartridge insertion part 10c that holds the vicinity of the rear end of the outer periphery of the cartridge cylinder 13 of the cartridge C by frictional force, and the tip 10d of the insertion part hits the shoulder part 9d in the front cylinder 9, It has become impossible to move forward.

The friction coupling body 10 can advance and retreat within the large diameter hole 9a of the front cylinder 9 and the inner hole of the block 5, and can move forward and backward within the large diameter hole 9a of the front cylinder 9 and the inner hole of the block 5,
is a diameter that allows the cartridge cylinder 13 to slide back and forth, and the exit hole 9c has a diameter that allows the core to move forward and backward. The cartridge cylinder 13 is stopped from advancing when it hits the shoulder between the outlet hole 9c and the medium diameter hole 9c.

The frictional force with which the gripping portion 10a grips the push rod 8 is generated when the frictional coupling body 10 is prevented from moving, for example, when the insertion portion tip 10d hits the shoulder portion 9d in the front cylinder as shown in FIG. Either apply a forward force to the push rod 8 while the push rod 8 is in a state that 8, the gripping portion 10 will be broken.
a has enough frictional force to grip the push rod 8 and follow its movement integrally.

A push rod cap 1 having a diameter larger than the through hole 10b is attached to the tip of the push rod 8 inserted through the friction coupling body 10.
1 is fixed. The push rod cap 11 abuts against the bottom of the gasket 15 of a cartridge C (FIG. 2) inserted with strong frictional force into the cartridge type insertion portion 10c of the friction coupling body 10.

The cartridge C used in the present invention has a configuration as shown in the enlarged longitudinal cross-sectional view of FIG. A slender cosmetic core 12 is inserted so that the core 12 does not bulge, and the outer periphery of the rear end of the core 12 is held by friction within the front half of the cylindrical core chuck 14.
The rear half of the core chuck 14 is preferably fitted and fixed to the outer periphery of the front half of a packing 15 made of elastic rubber. A plurality of friction protrusions 15a are provided on the outer periphery of the rear half of the packing 15, which contact the inner circumferential wall of the cartridge cylinder 13 with strong frictional force.

The core chuck 14 and the packing 15 may be manufactured separately as shown in FIG. 2, and then fitted and fixed together.
On the other hand, as shown in FIG. 2A, the lead chuck part 14' that frictionally holds the lead 12 and the packing part 15' having the friction projections 15a may be manufactured as one piece.

In any case, the friction force between the friction protrusion 15a and the inner circumferential wall of the cartridge cylinder 13 is generated when the cartridge cylinder 13 is stopped from moving forward (as shown in FIG. 1, when it hits the shoulder of the outlet hole 9c). It is large enough to break if the push rod 8 is moved forward when the cartridge cylinder 13 is attached (in a state where it is attached), but on the other hand, when the cartridge cylinder 13 moves (especially when moving backward), the friction force between it and the friction protrusion 15a causes the seal 15 ( and core chuck 14, core 12)
It is large enough to be driven by. The force for retracting the cartridge cylinder 13 is due to the strong frictional gripping force of the cartridge insertion portion 10c of the frictional coupling body 10, which will be explained in detail later, and the frictional coupling body 10 itself grips the push rod 8 that is retreating. The push rod 8 is followed by the force of the grip portion 10a.

The cartridge tube 13 of the cartridge C used in the present invention must have the necessary strength as a protective shell that protects the thin and soft cosmetic core 12 from external forces and keeps it in a straight shape. In order to prevent the core from scraping or collapsing due to friction, it must not be in direct contact with the outer periphery of the core and must be able to maintain a small gap between them. For this reason, it is preferable that the cartridge cylinder 13 be a thin-walled pipe made of thin-walled metal, particularly stainless steel. In this way, core 12
Even if a gap is provided between the two, it is possible to obtain a cartridge C having a sufficiently small diameter and sufficient strength.

Next, the feeding and retracting functions of the cosmetic core will be explained with reference to FIGS. 3 and 4. FIG. 3 is a partially cutaway sectional view showing the cosmetic core 12 with the entire cosmetic core 12 unrolled for convenience of explanation. Core 12
To feed out the block 5 from the state in which the core is stored as shown in FIG. However, since the protrusion 7 is guided by the groove hole 4 of the groove pipe 3, the push rod 8 moves forward directly without rotating (such a feeding mechanism and operation itself were already known before this application). publicly known).

When the push rod 8 tries to move forward, as shown in FIG. 1, the friction coupling body 10 is in contact with the shoulder 9d and cannot move, so the gripping force exerted by the grip portion 10a on the push rod 8 is broken, and the push rod 8 can move forward relative to the connecting body 10. When the push rod cap 11 pushes the bottom of the gasket 15 of the cartridge C with this forward force, the cartridge tube 13, which normally holds the gasket 15 stationary by frictional force, moves through the outlet hole 9c.
Since the seal 15 is in contact with the shoulder around the cartridge cylinder 1 and cannot move forward, the retaining frictional force between the gasket 15 and the cartridge cylinder 13 is broken, and the gasket 15 is held against the cartridge cylinder 1.
3, move forward inside the packing 15 and core chuck 14.
The cosmetic core 12, which is integrally held by the container, protrudes from the outlet hole 9c of the tip tube 9. Normally, if the core 12 protrudes only slightly, that is, the length of the push rod cap 11 increases from the state shown in FIG.
You can actually apply makeup by advancing the push rod 8 to the extent that it enters the rear end, but if you advance the push rod 8 further to the limit from this stage, the third
The state will be as shown in the figure. That is, almost the entire length of the core 12 is exposed, and only the gripping margin by the core chuck 14 remains inside the cartridge cylinder 13. Since the core chuck 14 hits the shoulder around the outlet hole 9c, it does not protrude from the front tube 9, and this becomes the limit of the forward movement of the push rod 8.

The protruding state of the lead as shown in FIG. 8 is, so to speak, abnormal and does not normally occur unless the operator is careless or mischievous. With the structure of conventional refills (for example, the cosmetic material 1 filled in the cylinder 2 of Utility Model Application Publication No. 51-153172 mentioned above), the lead that has protruded into such an abnormal state cannot be pulled back stably. figure,
If you are not careful, it may fall out of the tip tube, or even if you manage to pull it back into the tip tube, the next time you try to feed it out again and apply makeup, the tip will wobble, making it very uncomfortable to use. It becomes impossible to recover.

However, according to the structure of the cartridge C of the present invention and the friction coupling body 10 that connects it to the push rod, stable and practical recovery is possible even from such an abnormal state. In other words, in the state shown in Fig. 3, if the shaft cylinder 1 is rotated in the opposite direction to when it is fed out, the push rod 8 will move backward (to the right in Fig. 3) due to the engagement with the spiral pipe 2 and the guidance by the groove pipe 3. trying to be pulled back. At this time, since the frictional coupling body 10 is not prevented from moving backward (that is, free), the frictional force with which its gripping portion 10a grips the push rod 8 is different from when moving forward, and the frictional force does not cause it to break. is sufficiently large, so that the friction coupling 10 follows the push rod 8 and is pulled back together with it. Then, the cartridge insertion portion 10c of the friction coupling body 10 is connected to the cartridge cylinder 13.
The frictional holding force holding the cartridge is so large that it will not break unless it is strongly pulled out when replacing the cartridge, so the cartridge cylinder 13 is also pulled back together with the push rod 8. This cartridge tube 1
3 is now in a free state unlike when moving forward, so that the inner circumferential wall and the friction protrusion 15a of the packing 15
There is now no external force that tries to break the frictional force between
The packing 15 is stably moved back together with the cartridge cylinder 13, that is, together with the push rod 8, and the cosmetic core 12 is moved back together with the push rod 8.
can be retracted into the front tube 9 as shown in FIG.

In this way, the re-stored cosmetic core 12 is stabilized by the core chuck 14 and packing 15, with only a change in its relative position with respect to the cartridge tube 13 compared to the initial state shown in FIG. The holding state has not changed at all. That is,
The holding force of the lead chuck 14 against the cosmetic core 12 remains unchanged since there is no relative movement between the two, and the frictional force between the seal 15 and the cartridge cylinder 13 may be broken during forward movement. too,
Since the material and shape of the gasket 15 do not change, as long as the cartridge cylinder 13 is free, the frictional force of the gasket 15 against it remains virtually unchanged. Therefore, if the barrel 1 is slightly rotated in the forward direction again in the state shown in FIG.
The push rod 8 moves forward a little, and the frictional coupling body 10 moves forward together with the gripping force of the gripping part 10a, whereby the cartridge cylinder 13 is also moved forward a little, and the frictional force between the cartridge cylinder 13 and the gasket 15 is reduced. As a result, the packing 15 is also interlocked, and the lead 12 protrudes a little from the tip tube 9, allowing stable application of makeup. Since the cartridge cylinder 13 is free during this advance, there is no relative movement (advancement) of the packing 15 with respect to it, and there is no movement (advancement) of the packing 15 and the core chuck 14 to the extent that they are removed from the cartridge cylinder 13, causing the core 12 to fall off. That's not it. Since the core 12 is held unchanged in this way, even after abnormal protrusion as shown in FIG.
It can be used stably and comfortably without wobbling or falling off.

Note that, unlike the full protrusion as shown in FIG. 3, when the cosmetic core 12 is to be protruded by the amount necessary for normal use, for example, as described above, the push rod cap 11 in FIG. It is sufficient to protrude by the length in the axial direction or a little longer than that, and in order to retract it, it is sufficient to retreat by an amount obtained by subtracting the amount of use and wear from the amount of protrusion. Friction coupling body 10
The cartridge cylinder 13 is retracted by this retraction amount, respectively, away from the shoulder 9d and the shoulder around the hole 9c, and the gasket 15 is of course retracted together with the cartridge cylinder 13 by the same retraction amount, but the gasket 15
The relative position of the cartridge 13 with respect to the cartridge 13 is shifted forward by the initial protrusion amount. In this way, each time the feeding and retraction is repeated, the relative position of the gasket 15 with respect to the cartridge cylinder 13 changes.
3, move forward little by little, and finally move to the 3rd
As shown in the drawings and FIG. 4, and as is clear from FIG. 5, the packing 15 is located near the tip of the cartridge cylinder 13. (In addition,
As long as the cartridge is normally fed and used, the cartridge tube 13 itself will not be pulled far from the outlet hole 9c as shown in FIG. ) At this time, only a small amount of the lead 12 remains protruding from the lead chuck 14 (see FIG. 5).

If the core rubs like this, replace cartridge C with a new one. Remove the tip tube 9 by screwing or pulling it out from the block 5. Figure 5 shows the removed state. Next, as schematically shown in FIG. 6, the friction coupling body 10 is grasped with fingers and the old cartridge C is pulled out from the friction coupling body 10. Before pushing in a new cartridge, the relative positions of push rod 8 and friction coupling 10 must first be restored. This is because, as can be seen from FIG. 5, the cap 11 at the tip of the push rod 8 has moved further forward than the friction coupling body 10. Therefore, as shown in FIG. 6, hold the friction coupling body 10 with your fingers to support it, rotate the shaft cylinder 1 in the backward direction, move the push rod 8 backward with respect to the friction coupling body 10, and connect the cap 11 at the tip of the push rod to the friction coupling body. It is seated inside the body 10. After the push rod cap 11 is completely seated in the friction coupling 10, a new cartridge (not shown) is inserted into the insertion section 1.
Insert firmly into 0c. Then, when the front tube 9 is connected to the block 5, the state shown in FIG. 1 is returned again.

In addition, as mentioned above, the fourth
If the lead breaks inside as shown in the figure, even if the tip tube 9 is removed, the friction coupling body 10 will have been retracted beyond the opening edge of the block 5, and the push rod 8 will be I can't move back any further, so I don't feel comfortable changing the cartridge. At this time, rotate the shaft cylinder 1 in the forward direction to expose the friction coupling body 10 from the opening edge of the block 5 as shown in FIG. 5, and press the exposed friction coupling body 10 with your fingers to replace the cartridge. good.

[Effects of the invention] According to the invention, the cartridge has an extremely simple structure, is inexpensive, lightweight, and has sufficient strength to protect the soft cosmetic core. In this simple and inexpensive cartridge, the cosmetic core does not have its surroundings rubbed or abraded by other objects, and its base is always kept stable, so it does not fall out midway. Stable and comfortable use is guaranteed until the end without any wobbling or wobbling. Compatible with such a simple cartridge structure, the friction coupling body provided on the holder body side has a simple structure, and it also securely holds the cartridge and can be attached and detached from it very easily and simply, making the overall structure simple. A lightweight, easy-to-use, cartridge-type, bar-shaped cosmetic product can be obtained.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view showing an embodiment of the cartridge-type cosmetic bar of the present invention without the core drawn out, Fig. 2 is an enlarged longitudinal cross-sectional view of the cartridge used in the present invention, and Fig. 2A is an enlarged longitudinal cross-sectional view of the cartridge used in the present invention. A perspective view showing an example in which the packing and core chuck used in a cartridge are integrally formed. Figure 3 is a partially cutaway sectional view showing the core fully extended. Figure 4 is a partially cutaway sectional view showing the core fully extended. Figure 5 is a partial cross-sectional view of the cartridge-type bar-shaped cosmetic of the present invention with the tip tube removed for cartridge replacement; Figure 6 is a procedure for pulling out and inserting the cartridge type. It is a partially sectional three-dimensional view for explaining. Main symbols: 1...Shaft tube, 3...Groove pipe, 5...
...block, 8...push bar, 9...nozzle, 9d...
Shoulder part, 10...Friction connection body, 10a...Gripping part,
10c... Cartridge insertion part, 11... Push rod cap, C... Cartridge, 12... Cosmetic core, 13... Cartridge tube, 14... Lead chuck, 15... Packing, 15a... Friction protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. A holder body consisting of a shaft cylinder and a block that are fitted together so as to be able to rotate relative to each other, and a front cylinder that is removably attached to the tip of the block. A cartridge-type cosmetic product having a push rod that is moved forward and backward non-rotationally by a push rod, in which the push rod is inseparably combined with a friction coupling member having a grip portion at the rear end that grips the outer periphery of the push rod with a constant frictional force, A cartridge insertion part is formed on the distal end side of the friction coupling body to frictionally hold the outer periphery of the rear end of the cartridge, and the cartridge has a friction protrusion that contacts the inner periphery with a certain frictional force in a cartridge cylinder whose both ends are open. A packing having a part of the outer periphery thereof is disposed, and a lead chuck part is formed on the tip side of the packing to stably hold the cosmetic core without contacting the inner periphery of the cartridge cylinder, and the holder main body includes: A space is provided in which the frictional coupling body and the cartridge cylinder frictionally held therein can move back and forth, and a shoulder is formed to prevent the forward movement of the frictional coupling body and the cartridge cylinder. When the push rod moves forward by breaking a certain frictional force of the gripping part, the cosmetic core is pushed forward by pushing the packing forward to break a certain frictional force of the friction protrusions and move the packing forward. protrudes from the tip of the front cylinder, and when the push rod retreats, the constant frictional force of the gripping part, the frictional holding force of the cartridge insertion part, and the above-mentioned or 1. A cartridge-type rod-shaped cosmetic product, characterized in that the packing and the cosmetic core held therein are moved back by the same amount as the push rod. 2. The cartridge-type rod-shaped cosmetic according to claim 1, wherein the cartridge cylinder is a thin-walled pipe made of stainless steel, and the packing and its friction protrusions are made of elastic rubber.