JPH079824Y2 - Holding tube for rod-shaped container - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a stick-shaped cosmetic such as lipstick and tic, a medicated lip, a paste, and a container for filling the melted content to be formed into a stick-like shape. And a holding cylinder for a rod-shaped product container.

[Prior art]

In this kind of rod-shaped product container, the following force acts on the contents at the time of feeding and lowering. That is, the contents do not move on the center line of the container body at the time of feeding and lowering,
Since there is a clearance between the container body and the holding cylinder, the holding cylinder for storing the contents advances with respect to the container body with some eccentricity. As a result, the inner surface of the container body may rub against the contents. In particular, since the contents are deformed after use, the above-mentioned rubbing often occurs at the time of lowering. Such deformation is greater as the content is softer, such as soft lipstick. At the time of lowering, the contents may hit the mouth of the container body, so that a tensile force acts on the contents in combination with the rubbing. Due to the rubbing or contact between the container body and the contents, a torque force acts on the contents at the time of feeding and lowering. When such a tensile force or a torque force acts on the contents and the strength of the contents is defeated by the above force, the contents are interrupted or come off from the container body. Contents that have experienced such “breaks” and “drops” will be “lost” at that position when they are lowered, making it impossible to close the lid.
If it is turned upside down, the contents will fall off and it will become unusable. More specifically, a stick-shaped cosmetic such as lipstick or tic will be described as an example. In these containers, generally, a holding cylinder for holding the cosmetic in a container body is provided, and the makeup is melted in the holding cylinder. The structure is such that the material is poured and held.
The holding cylinder is usually in the form of a short tube into which the lower part of the cosmetic stick is inserted, and a cylindrical protrusion is provided on the inner surface of the upper peripheral wall of the holding cylinder so as to protect the cosmetics from “breaks” and “drops”. To prevent. However, such a structure of the holding cylinder has not been able to sufficiently prevent "breakage" and "dropout" of the cosmetic material. When the container was unwound when "peeling" and "removal" occurred, "left behind" of the cosmetics occurred. If the container is turned upside down in this state, the cosmetic will fall off.
Further, when the lid was put on, it was impossible to put it on because the cosmetic was still exposed, and it was completely impossible to use it as a container. For this reason, in the conventional holding cylinder, in order to prevent the cosmetics from being left behind due to the above-mentioned “breakage” and “dropout”, the protrusions are largely projected from the inner wall of the holding cylinder.

[Problems to be solved by the device]

However, in the holding cylinder having such a structure, the protrusion of the projection is large, and the projection is provided on the inner wall of the holding cylinder so that the inside angle is right angle. However, air did not flow to the inside corners of the protrusions of the protrusions, and the cosmetics could not be completely filled. As a result, the cosmetic material formed in a rod shape has a cavity at the projecting point, so that there is a drawback that "breakage" and "dropout" easily occur. In addition, since the protrusion of the protrusion is large, the cooling gradient of this protrusion is different from that of the other portions, and it is rapidly cooled and solidified, so that strain occurs in this portion and cracks easily occur at this point. Was there. As a result, there is a drawback that the cosmetic easily breaks off from the protruding portion. Recently, soft lipsticks have been favored because of the good spread of the red and the gloss of the red. Since the soft lipstick has a weak stress against tensile force and torque force, even with a holding cylinder structure that was not a problem with conventional lipsticks, "splits" and "drops" occur during use, and it is not possible to draw it out and use it It was. The above-mentioned drawbacks can be said with respect to other molten contents to be formed into a rod shape. The present invention solves the above-mentioned drawbacks and prevents the generation of cavities due to air pockets at the time of filling, which is a cause of weakening the strength of contents, and the occurrence of distortion due to the difference in cooling gradient. It is an object of the present invention to provide a holding tube for a rod-shaped product container, which can prevent "breakage" and "dropout" and "discard" of contents, and can reliably carry out and lower the product. Other benefits and benefits are detailed below.

[Means for solving problems]

To achieve the above object, the present invention relates to a holding cylinder for a stick-shaped container that advances and retracts in a container body and holds a lower portion of a stick-shaped contents such as a stick-shaped cosmetic. , A bent portion that is continuous above the leg portion and a dish portion that is continuous above the bent portion, and the leg portion is formed in a taper so that the inner diameter expands toward the bottom of the cylinder, After an inner wall is provided with a step having a triangular cross section, and the step is extended from the highest point of the step to an appropriate point (end point) on the step at substantially the same height as the highest point of the step. Provided is a holding cylinder for a rod-shaped product container, which is provided with a plurality of linear ribs that are slightly curved toward the end point. In this holding cylinder, the stepped portion has a vertical cross-section that is substantially chevron-shaped,
The end point of the rib is the base point of the step, the rib is provided in the lower half of the step, the rib is provided in the upper half of the step, and the rib is above the step. The points provided from the half to the lower half, the ribs alternately arranged on the lower half or the upper half of the step, and the height of the step at the highest point is relative to the inner diameter of the holding cylinder. It is also characterized in that it is about 1/13, that the cross section of the rib is substantially triangular, and that the cross section of the rib is curved.

【Example】

Next, a holding cylinder for a rod-shaped product container according to the present invention will be described based on an embodiment shown in the drawings. Reference numeral 1 denotes a container main body, and when the skirt 2 is rotated, a holding cylinder 3 arranged in the container main body 1 slides in the container main body 1 so as to be able to move back and forth. The holding cylinder 3 has stick-shaped cosmetics and other contents 4
The lower part of the contents is held and the contents 4
Are fed out from the opening of the container body 1. The holding cylinder 3 is formed in a tubular shape, and includes a leg portion 3a, a bent portion 3b continuous above the leg portion 3a, and a dish portion 3c continuous above the bent portion 3b. The leg portion 3a is formed in a taper so that the inner diameter thereof widens toward the bottom of the cylinder. The bent portion 3b is bent inward. On the inner wall of the leg portion 3a of the holding cylinder 3, a step portion 5 having a substantially vertical cross section is provided. A plurality of linear ribs 8 are provided from the highest point 6 of the step 5 to the base 7 of the step 5. The rib 8 extends substantially at the same height as the highest point 6 of the step 5. The rib 8 is slightly curved inward near the base point 7 of the step portion 5 and ends at the base point 7 of the step portion 5. The height of the step portion 5 at the highest point 6 is about 0.3 mm to 0.5 mm, which is preferably about 1/10 to 1/18 of the inner diameter of the holding cylinder 3.
In this example, the inner diameter of the holding cylinder 3 at the highest point 6 is 5.9 mm,
The height of the step 5 is 0.45 mm, and the latter is about 1 to 13 the height of the former. In the illustrated example, the inner diameter of the step portion 5 at the highest point 6 is 5.0 mm, and the inner diameter of the base point 7 is 5.9 m.
m, the inner diameter of the base point 7'is 5.9 mm. The rib 8 is formed in a curved shape having a rectangular cross section, an arc shape, or a semicircular shape. As shown in FIG. 4, it is desirable that the rib 8 has a substantially triangular cross section so as to enhance the transmission of the torque force to the contents 4. The protrusion of the rib 8 is
When a plurality is provided on the lower half 5a of the step 5 (FIG. 2), on the contrary, when a plurality is provided on the upper half 5b of the step 5 (sixth)
(Fig.), Or when the lower half 5a to the upper half 5b are provided (Fig. 7), the lower half 5a or the upper half 5b are staggered (Fig. 8). is there. The number of ribs 8 is arbitrary. In the illustrated example, the number is four. Rib 8
Is up to an appropriate point on the stepped portion 5. In the example shown,
The rib 8 has the same length as the length from the highest point 6 of the step portion 5 to the base point 7. Therefore, since the length of the lower half portion 5a is 8 mm, the length of the rib 8 is 8 mm. In the illustrated example, when the rib 8 is provided on the upper half portion 5b, the length of the upper half portion 5b is 5 mm, so the length of the rib 8 is 5 mm.
When is extended from the lower half portion 5a to the upper half portion 5b, it is 13 mm. When the step portion 5 is provided over the entire length of the leg portion 3a, the rib 8 can also be provided so as to project over the entire length of the longest leg portion 3a. In this case, when the length of the rib 8 is shorter than the length of the step portion 5,
There is an effect that the stress against the tensile force on the contents 4 becomes relatively large. The step portion 5 is formed integrally with the holding cylinder 3 and is embedded in the lower portion of the contents 4. FIG. 9 shows another embodiment in which the step portion 5c is formed into a substantially right-angled triangle in a vertical cross section. In this case, the step portion 5c is the lower half portion of the above embodiment.
Although it is formed at a position corresponding to 5a, it may be formed at a position corresponding to the upper half 5b of the above embodiment. In any case, the rib 8 is projectingly provided on this step portion 5c. The structure of the rib 8 is the same as above. The mechanism for advancing and retracting the holding cylinder of the rod-shaped article container according to the present invention is arbitrary. For example, as shown in the drawing, a spiral cylinder type in which an engaging projection 10 slidably engaged with the spiral cylinder 9 is externally provided in the holding cylinder 3, or a screw that is rotatably screwed into a screw shaft is externally provided. There is a screw shaft type (not shown). In the figure, 11 is a filling, 12 is a barrel, and 13 is a filling lid.

[Action]

According to the holding cylinder of the rod-shaped product container according to the present invention, the process of filling the semi-fluid contents 4 is as follows. That is, the semi-fluid contents 4 filled in the holding cylinder 3 from the left side in FIG. 1 move to the right along the inner wall of the holding cylinder 3. A step portion 5 is projectingly provided in the holding cylinder 3, but the inner wall reaching the step portion 5 is gradually inclined, and from the base point 7, the lower half portion 5a is formed.
It is inclined in the same direction as the inner wall. Moreover, linear ribs 8 are arranged from the base point 7 to the highest point 6. Since the height of this step portion 5 is as low as about 1/13 of the inner diameter of the holding cylinder 3 at the highest point 6, the presence of the step portion 5 does not hinder the flow of the contents 4. The rib 8 has substantially the same height as the highest point 6 of the stepped portion 5 and extends linearly, and has a base point 7
Is formed in a curve. Therefore, the rib 8 does not hinder the flow of the content 4, but also appropriately guides the flow of the content 4 as a semi-fluid, prevents undulations and vortices, and rectifies the flow of the content 4. There is. Therefore, the semi-fluid contents 4 are sequentially filled and solidified into a predetermined rod shape without forming a cavity due to air. As for the process in which the filled contents 4 solidify, since the projecting degree of the step 5 and the rib 8 is extremely small as described above, when cooling the content 4, the step 5 and the rib 8 are There is no difference in the cooling gradient from the other parts, and there is no risk of distortion occurring inside the contents 4. Therefore, the occurrence of "breakage" and "disengagement" due to the presence of cavities and strains can be prevented, so that "leaving" of the contents 4 can be reliably prevented. Next, regarding transmission of tensile force and torque force of the holding cylinder 3 to the contents 4, in the holding cylinder of the rod-shaped container according to the present invention, the step portion 5 and the rib 8 projecting on the inner wall are extended longer than in the conventional case. It is set up. Moreover, the step portion 5 is formed in a vertical mountain-shaped cross section of the lower half portion 5a and the upper half portion 5b with the highest point 6 as a boundary, and a plurality of ribs 8 having a substantially triangular horizontal cross section are linearly overlapped here. Has been done. Therefore, even though the degree of protrusion from the inner wall of the holding cylinder 3 is extremely small, the tensile force and the torque force of the holding cylinder 3 with respect to the contents 4 are transmitted to a large extent. Therefore, "breakage" and "removal" of the contents 4 from the holding cylinder 3
It is possible to prevent the occurrence of "and left". As described above, the inner surface of the leg portion 3a of the holding cylinder 3 has a small cross-sectional area of the step portion 5 and the rib 8. Therefore, the cross-sectional area of the contents 4 can be increased as compared with the conventional case. On the other hand, the transmission force of the tensile force and the torque force of the holding cylinder 3 with respect to the contents 4 is large. Therefore, even when applied to a soft lipstick, "breakage" or "dropout" does not occur, and it is no longer possible to extend and lower the lipstick.

[Effect of device]

Thus, according to the rod-shaped container holding cylinder according to the present invention, a rod-shaped container holding cylinder that is formed in a tubular shape and moves back and forth in the container body to hold the lower portion of the stick-shaped contents such as a stick-shaped cosmetic material. In, in the inner wall of the holding cylinder, a stepped portion having a triangular cross section is provided, and a plurality of linear ribs are provided from the highest point of the stepped portion to an appropriate end point on the stepped portion, and the rib is the highest point of the stepped portion. Since it is extended at substantially the same height as the above and is slightly curved toward the end point, no voids or distortion of the contents are generated when the cosmetics or other contents are filled and solidified. It is possible to prevent the occurrence of "breakage" and "dropout" of the contents and the "leaving" of the contents.
Therefore, it is possible to surely feed and lower even the soft contents, and also the holding cylinder and the thin container having a small cross-sectional area.

[Brief description of drawings]

FIG. 1 is a front view of a half section of a holding cylinder for a rod-shaped container according to the present invention, and FIG.
3 is an enlarged view of part A of FIG. 2, FIG. 4 is a bottom view of FIG. 2,
FIG. 5 is a left side view of FIG. 6 to 9 are sectional front views of main parts showing another embodiment, and FIG. 10 is B of FIG.
FIG. 1 ... Container body, 2 ... Hakama, 3 ... Retaining cylinder, 3a ... Leg, 3b ... Bend, 3c ... Plate, 4 ... Contents, 5 ...
Step, 5a ... lower half, 5b ... upper half, 6 ... highest point, 7
...... Base point, 8 ...... Rib, 9 ...... Spiral cylinder, 10 ...... Engagement protrusion, 11 ...... Filler, 12 ...... Body barrel, 13 ...... Capsule.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Shown 58-133013 (JP, U) Shown 54-61776 (JP, U) Shown 54-54487 (JP, U) Shown 62- 146409 (JP, U)

Claims (10)

[Scope of utility model registration request] 1. A holding cylinder for a rod-shaped article container that advances and retreats in a container body and holds a lower portion of a rod-shaped content such as a rod-shaped cosmetic,
The holding cylinder is formed in a tubular shape, and includes a leg portion, a bent portion that is continuous above the leg portion, and a dish portion that is continuous above the bent portion. Is formed so as to widen, and a step portion having a triangular cross section is provided on the inner wall of the holding cylinder, and the step portion from the highest point of the step portion to an appropriate point (end point) on the step portion is provided on the step portion. A holding cylinder for a rod-shaped container, comprising a plurality of linear ribs extending substantially at the same height as the highest point and then slightly curved toward the end point. 2. The holding cylinder for a rod-shaped container according to claim 1, wherein the stepped portion has a substantially chevron-shaped vertical cross section. 3. The holding cylinder for a rod-shaped container according to claim 1 or 2, wherein the end point of the rib is a base point of the step. 4. A holding cylinder for a rod-shaped container according to any one of claims 1 to 3, wherein the rib is provided in a lower half portion of the step portion. Cylinder. 5. A holding cylinder for a rod-shaped article container according to any one of claims 1 to 3, wherein the rib is provided in an upper half of a step portion. Cylinder. 6. The holding cylinder for a rod-shaped article container according to claim 1, wherein the rib is provided from an upper half portion to a lower half portion of a step portion. A holding cylinder for the product container. 7. The holding cylinder for a rod-shaped article container according to claim 1, wherein the ribs are alternately arranged on a lower half portion or an upper half portion of the step portion. The holding cylinder for the rod-shaped container. 8. The holding cylinder for a rod-shaped container according to any one of claims 4 to 7, wherein the height of the stepped portion at the highest point is about 1/13 of the inner diameter of the holding cylinder. A holding cylinder for a rod-shaped container characterized by: 9. A holding cylinder for a rod-shaped container according to claim 4, wherein the rib has a substantially triangular cross section. 10. The holding cylinder for a rod-shaped container according to claim 4, wherein the rib has a curved cross section.