JPH0141367Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a cartridge-type cosmetic bar, and more specifically, cosmetics can be dispensed only when the cartridge is fitted into a specific holder body, and other than that, cosmetics can be dispensed carelessly. The present invention relates to a cartridge type cosmetic bar in which a spiral feeding mechanism is protected from rotation due to external impact or tampering so that the material does not protrude.

Generally, a cartridge-type cosmetic bar consists of a cartridge that holds cosmetics, a holder body that is combined with the cartridge to allow the cosmetics to be fed out and withdrawn, and an end opposite to the holder body that is attached to the cartridge. It consists of three basic parts including a cap. By removing the cap and rotating the outer cylindrical portion of the holder body relative to the cartridge, the cosmetic is advanced and withdrawn via a spiral feeding mechanism built into the cartridge. When you have finished using the cosmetics, you can conveniently replace the cosmetics with a single touch operation by simply removing the cartridge from the holder body and inserting a new cartridge into the holder.

However, in many conventional cartridges, the spiral body of the built-in feeding spiral mechanism is exposed or easily accessible from the outside, and in such cases, the spiral body of the cartridge is The problem was that the cosmetics inside were unnecessarily rotated, causing the cosmetics inside to protrude inadvertently. Also, exposed like this,
Or, since the easily accessible spiral mechanism is not sufficiently protected against external shocks, for example, if the cartridge is accidentally dropped on the floor when replacing it, a direct impact will be applied to the spiral mechanism and damage it. There was also a drawback.

Furthermore, since the exposed spiral mechanism can be rotated without being combined with the holder body, there is a problem that the cosmetics may be damaged due to mischief, etc. In order to avoid this problem and the above-mentioned disadvantages, the spiral mechanism must be completely hidden inside the cartridge (generally cylindrical). However, by hiding the spiral mechanism inside the cartridge, the operation of inserting the cartridge into the holder body must not be smooth, so consideration must be given to this point, but conventionally such consideration has not been done. No cartridge-type bar-shaped cosmetic product has been developed. Furthermore, when the cartridge is inserted into the holder body, the connection must be such that rotational force can be transmitted from the holder to the cartridge, and the connection must be made to prevent the cartridge from easily falling out of the holder. Since the connection and the locking connection could not be achieved without separate structures, there was also the problem of increased manufacturing man-hours and manufacturing costs.

The present invention was developed in view of these circumstances, and its purpose is to prevent the cartridge from being assembled with the holder body, for example, when it is on display or on display for sale.
The spiral mechanism is sufficiently hidden inside the cartridge so that the cosmetics in the cartridge will not protrude due to mischief or accidental dropping, etc., and the person who purchased the cartridge When attempting to insert the cartridge into the holder, the cartridge is constructed such that the insertion operation can be performed easily and quickly without any loss of smoothness, regardless of the relative angular position between the cartridge and the holder body. To provide a cartridge-type bar-shaped cosmetic in which a single member for connecting a main body and a cartridge has two functions: a locking connection and a rotational force transmission, thereby reducing the number of parts and making manufacturing easier and cheaper. It's about doing.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the cartridge part of the cartridge-type cosmetic bar according to the present invention, and 1 is a cartridge cylinder for housing the cosmetic bar and a feeding spiral mechanism, and its both ends are It's open. A core chuck 2 is slidably housed inside the cartridge cylinder 1 on the front end side (on the left side in the figure), and the rear end of a bar-shaped cosmetic (not shown) is held in the core chuck 2. Lipstick is commonly used as a bar-shaped cosmetic, but other bar-shaped solid cosmetics such as remover can also be used. The outer periphery of the cylindrical portion of a cylindrical block 3 having a radial wall 3a at one end is fixed to the inner wall of the cartridge cylinder 1 at approximately the center in the drawing.
It is integrated so that there is no relative movement. A non-circular hole 3b such as a square hole or a hexagonal hole is bored in the radial wall 3a at the tip end of the cylindrical portion of the block 3, as will be described later, through which the rod 5 is inserted for forward and backward movement.

The tip of a cylindrical rotating spiral body 4 is fitted into the inner periphery of the cylindrical portion of the block 3 so as to be relatively rotatable. The entire outer periphery of the spiral body 4 other than the tip end is formed as a smooth surface 4a up to the rear end, and there is no mechanical stress on the surface. A spiral groove 4b is formed in the hollow portion of the spiral body 4 as shown by a pitch circle with a chain line.

The rear end of the core chuck 2 inserted toward the front end side of the block 3 is connected to a non-circular hole 3 in the block radial wall 3a.
A rod 5 with a non-circular cross section that non-rotationally inserts into sliding contact with b.
The core chuck 2 and rod body 5 are integrally connected to the front end of the core chuck 2 and the rod body 5 so that they do not rotate relative to the block 3 and the cartridge cylinder 1, but only move forward and backward. An engaging piece 5a protruding from the outer periphery of the rear end of the rod 5 is helically engaged with a spiral groove 4b on the inner periphery of the spiral body 4.
When the spiral body 4 is rotated by some means, the rod 5 screwed thereon linearly advances and retreats to cause the cosmetic material to emerge and retract from the tip of the cartridge barrel 1, which is similar to the conventionally known feeding spiral mechanism. The same is true.

However, in the present invention, the spiral body 4 is configured so that it cannot be easily turned from the outside, that is, it is normally inaccessible unless a specific means is used. To explain in detail, the spiral body 4 has a smooth outer circumferential surface 4a over the entire outer circumference of the helical body 4, except for the distal end portion fitted with the block 3 as described above, and extends to the rearmost end, and the entire length of this smooth outer circumferential surface 4a corresponds to the length of the cartridge cylinder. It is surrounded and shielded by a cylindrical jacket 20 at the rear end of 1 so as not to be separated from the outside. The cylindrical outer cover 20 may be integrated with the cartridge tube 1, which is the cartridge tube 1 extended rearward, or may be a separately formed cylindrical outer cover connected to the cartridge tube. The rear end is open and extends at least the same length as the rear end of the smooth surface 4a, and there is a minute gap 30 between the cylindrical outer cover 20 and the smooth surface 4a, which is large enough to barely fit a fingernail, for example. It is formed. In the drawings, the rear end of the cylindrical jacket 20 is aligned with the rear end of the spiral body 4, but the cylindrical jacket 20 may extend beyond the spiral body 4. Thus, in the cartridge of the present invention, the feeding spiral mechanism is completely shielded and protected from external impact or contact, and the spiral body 4
It is only possible to rotate the holder using a specific holder body.

Figure 2 shows a specific holder body 21 according to the present invention.
is shown in longitudinal section. The holder main body 21 includes an outer cylinder part 24 having a bottom part 22 at the rear end, and an inner cylinder part 2 extending from the inner bottom of the bottom part 22 toward the front end concentrically with the outer cylinder part 24.
It consists of 3. The inner cylindrical portion 23 has an inner diameter slightly larger than the outer diameter of the smooth outer peripheral surface 4a of the spiral body 4 and slightly smaller than the inner diameter of the cartridge cylinder 1, and has a substantial length of the smooth outer peripheral surface 4a of the spiral body on its inner periphery. At least two leaf springs 25 are provided at intervals in the circumferential direction, and the leaf springs 25 come into elastic frictional surface contact over a portion. The total thickness of the leaf spring 25 and the inner cylinder part 23 is, when the rear end 20 of the cartridge cylinder 1 is inserted into the holder body 21 as shown in FIG.
It must be thinner than the minute gap 30 so that the outer circumference of the inner cylinder part 23 does not come into contact with the inner circumference of the rear end of the cartridge cylinder 1. The length of the inner cylinder part 23 is the second
Although the length in the axial direction is shown to be shorter than the axial length of the smooth outer peripheral surface 4a of the spiral body in the example shown in FIG.

The outer cylinder part 24 has an inner diameter that covers the outer side of the cylindrical jacket 20 at the rear end of the cartridge cylinder 1, leaving a cylindrical gap 31 as shown in FIG. It is fitted to the outer periphery of the cartridge cylinder 1 via the cartridge 1 so as to be relatively rotatable. In the illustrated embodiment:
The joint ring 8 and the front end of the outer cylinder part 24 are integrally joined, and the inner diameter of the joint ring 8 fits loosely into the outer circumference of the cartridge cylinder 1, allowing relative rotation between the outer cylinder part 24 and the cartridge cylinder 1. .

When the rear end (cylindrical jacket 20) of the cartridge cylinder 1 shown in FIG. 1 is inserted into the holder main body 21 shown in FIG. Inner cylindrical part 2 of the holder
3, the leaf spring 25 on the inner circumference is elastically deformed and comes into contact with the friction surface and exerts an elastic gripping force. In this way, the cartridge and holder are easily joined using the leaf spring 25 as a retaining means. When pulling out the cartridge, it must be pulled out with a force that overcomes the elastic gripping force of the leaf spring 25, and this force is intentionally applied. A cap 6 is fitted onto the front end of the holder main body 1 to which the cartridge is attached via the coupling ring 8. Smooth surface 4 on the outer periphery of the spiral body of the leaf spring 25
The elastic gripping force on the helical body 4 acts as the above-mentioned slip-off prevention means, and also transfers the rotational force from the holder body 21 to the helical body 4.
It also serves as a means of communicating. Holder body 21
To rotate, hold down the cartridge cylinder 1 with one hand,
This is done by rotating the holder outer cylindrical part 24 with the other hand, and in order to minimize the resistance to this rotation, the friction surface contact between the leaf spring 25 of the holder inner cylindrical part 23 and the smooth outer peripheral surface 4a of the cartridge spiral body is made. Otherwise, there is no substantial contact surface between the cartridge and the holder. When the holder main body 21 is turned and the spiral body 4 is rotated, the rod 5, which is engaged with the inner circumferential spiral groove 4b at the engaging portion 5a, is restrained by the non-circular hole 3b of the block 3, so that it is not rotated. The cosmetic material is caused to appear and disappear from the tip of the cartridge barrel 1 by rotating forward or backward.

As explained above, according to the configuration of the present invention, the outer circumferential surface of the spiral body built into the cartridge is a smooth surface, and the leaf spring inside the inner cylindrical part of the holder body is elastically connected to any part of this smooth outer circumferential surface. Since the cartridge and the holder body can be frictionally engaged, the cartridge and the holder main body can be smoothly inserted and attached regardless of their relative angular position as long as their axes are aligned. On the other hand, if, for example, complementary grooves and grooves are formed in the axial direction on the outer periphery of the helical body and the inner periphery of the holder body for the purpose of transmitting rotational force, the relative angular position relationship is such that the grooves and the protrusions are perfectly aligned. The cartridge cannot be inserted into the holder unless the cartridge is inserted into the holder, and if the grooves and protrusions are shielded from the outside, trial and error must be repeated by hand, so the insertion operation is extremely difficult. However, the present invention does not have such disadvantages, and the insertion operation is extremely smooth and simple since all that is required is to insert the cartridge into the holder.

Furthermore, according to the present invention, since the rotational force transmission between the holder and the cartridge and the prevention of axial slippage are achieved with only one member, the leaf spring 25, the number of parts is reduced, the manufacturing man-hours are reduced, and the manufacturing cost is also reduced. There is an effect that can be achieved by reducing it.

Furthermore, in the cartridge of the present invention, its feeding spiral mechanism is completely shielded and protected from the outside, and the outer circumferential surface of the spiral body located within the minute gap is a smooth surface, so unless it is combined with a specific holder body, For example, even if you poke a matchstick or a thin screwdriver, you will never be able to turn the spiral.
Therefore, it is possible to reliably prevent damage caused by tampering with a cartridge that has not yet been combined with the holder body while it is on display for sale, etc., by feeding out cosmetics and causing wear and tear. This has the effect of completely preventing the spiral mechanism of the cartridge from being twisted or damaged due to a fall or the like.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the cartridge portion of the cartridge-type bar-shaped cosmetic product according to the present invention. FIG. 2 is a longitudinal sectional view showing an embodiment of the holder body of the cartridge type cosmetic bar according to the present invention. FIG. 3 is a partially sectional longitudinal sectional view showing a state in which the cartridge and holder main body of the cartridge-type cosmetic bar according to the present invention are inserted and a cap is attached. Explanation of main symbols, 1... Cartridge tube, 2...
...Core chuck, 3...Block, 3a...Radial wall, 3b...Non-circular hole, 4...Spiral body, 4a...
Smooth outer circumferential surface, 5...rod, 5a...engaging piece, 6
...cap, 8 ... joint ring, 20 ... cylindrical jacket (rear end of cartridge tube), 21 ... holder body,
22... Bottom, 23... Inner cylindrical part, 24... Outer cylindrical part, 25... Leaf spring (retaining connection means/rotational force transmission means), 30... Minute gap.

Claims (1)

[Claims for Utility Model Registration] A non-circular hole 3b is bored in the radial wall 3a of a cylindrical block 3 fixed to the inner wall of the cartridge cylinder 1 with both ends open and having a radial wall at one end; The rear end of the core chuck 2 for holding cosmetics, which was inserted into the front end of the cartridge cylinder 1 from the radial wall 3a so as to be able to slide along the inner wall of the cylinder 1, was slid into the non-circular hole 3b. An engaging piece 5a that is coupled to the front end of the rod 5 having a non-circular cross section and protrudes from the outer periphery of the rear end of the rod 5.
is engaged with a spiral groove 4b on the inner periphery of a rotated spiral body 4 whose tip end is fitted to the inner periphery of the block so as to be relatively rotatable, and the outer circumferential surface of the helical body 4 is free from the tip end which is fitted with the block. The entire surface is formed as a smooth outer circumferential surface 4a up to the end, and it is normally impossible to contact from the outside between this smooth outer circumferential surface and the inner surface of the cylindrical outer cover 20 at the rear end of the cartridge cylinder 1 that shields and surrounds it from the outside. On the other hand, the holder main body 21 has an outer cylinder part 24 whose front end is fitted to the outer periphery of the cartridge cylinder 1 so as to be relatively rotatable, and a rear end bottom part 22. an inner cylinder portion 23 having a diameter slightly larger than the smooth outer circumferential surface 4a of the spiral body and slightly smaller than the inner diameter of the cartridge cylinder;
A plate spring 25 is provided on the inner periphery of the inner cylinder part 23 to exert an elastic gripping force by frictionally contacting the smooth outer peripheral surface 4a. The total thickness including the wall thickness of the spring 25 is made thinner than the minute gap 30, and the plate spring 25 serves as a means for connecting the cartridge and the holder body to prevent them from coming off, and also transmits rotational force from the holder body to the cartridge spiral body. A cartridge-type bar-shaped cosmetic product characterized in that it is a cosmetic product.