JP4756681B2 - Airtight cap device - Google Patents

Description

  The present invention relates to a hermetic cap device used for the purpose of preventing dry solidification of a volatile content such as a solid cosmetic or a pigment filled in a pen-type cosmetic body such as a brush pen, a writing instrument body, and other bodies.

As a conventional hermetic cap device, for example, an outer cap having a valve seat formed over the entire circumference on the side wall, and the outer cap is accommodated so as to be movable in the axial direction while opening in the same direction as the outer cap. The valve body is formed over the entire circumference on the side wall and is provided at a portion facing the valve seat, and a communication hole for communicating the space in the inner cap, the space outside the inner cap and the space in the outer cap is provided. The cap is formed between the inner cap and the outer cap, and is configured to urge the inner cap toward the opening side of the outer cap. An airtight cap device provided with an elastic body, wherein the airtightness in the cap presses the valve body of the inner cap against the valve seat of the outer cap by the original restoring force of the elastic body. Shall be secured has been disclosed by (for example, see Patent Document 1).
JP, 2001-252131, A According to such an airtight cap device, when the outer periphery of the pen-type cosmetic body is brought into close contact with the inner periphery of the inner cap by pushing the tip of the pen-type cosmetic body into the inner cap, Since the air inside the cap can be discharged outside the cap through the communication hole and the gap between the valve body and the valve seat, the air pressure inside the cap should not increase when the pen-type cosmetic body is attached to the cap. As a result, it is possible to reduce the difficulty of attaching the cap against the increase in air pressure in the cap, and the body rises from the cap due to the increase in air pressure. The effect of not causing a so-called pump phenomenon that a sufficient airtight state cannot be secured is ensured.

  However, in such an airtight cap device, in addition to the need for a double cap structure of an outer cap and an inner cap, an elastic body for biasing the inner cap toward the opening side of the outer cap is used as the inner cap and the inner cap. The configuration of the device has a configuration that is provided as a separate and independent part between the outer caps, and that the assembly work requires considerable attention to ensure that the original body restoring force of the elastic body that is a separate and independent component acts. This complicates the manufacturing process and the assembly work, which leads to an increase in manufacturing cost.

  Therefore, an object of the present invention is to provide an airtight cap device capable of simplifying the device configuration and facilitating assembly work so that the effect of reducing the manufacturing cost can be sufficiently obtained.

In order to solve the above problems, an airtight cap device according to the present invention is accommodated in an outer cap having an opening, an inner cylinder movably accommodated in the axial direction within the outer cap, and an outer cap. An elastic body that urges the inner cylinder toward the opening side, and when the cap is mounted on the main body so as to cover the tip, the inner cylinder is urged toward the opening side by the original restoring force of the elastic body, and the outer cap and An airtight cap device that secures airtightness in the cap by being in close contact with the main body, wherein the elastic body is formed by providing a notch hole in the side wall of the inner cylinder, and the airtightness in the cap is The outer periphery is in close contact with the inner periphery on the opening side of the notch of the inner cylinder, and is formed on the valve seat formed over the entire circumference of the side wall of the outer cap over the entire circumference of the side wall of the inner cylinder. Dense valve body Is ensured by, also, the inner cylinder, is characterized in that it comprises a communication hole for communicating with one another space and elastic body volume of the opening side of the outer cap than the elastic member.

  According to such an airtight cap device, since the elastic body is formed by providing a notch hole in the side wall of the inner cylinder and is not configured as a separate and independent component, the device configuration is simplified through a reduction in the number of components. In addition, it is possible to facilitate the assembling work, and as a result, the effect of reducing the manufacturing cost can be sufficiently obtained.

  In the present invention, the outer periphery of the main body or inner cylinder includes the end surface of the main body or inner cylinder, and the inner periphery of the outer cap or inner cylinder also includes the end surface of the outer cap or inner cylinder. It is a concept to do.

  Furthermore, as a material of such an airtight cap device, a thermoplastic resin such as low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), polypropylene (PP), thermoplastic elastomer, and the like. For example, polyurethane elastomer (TPU), polyolefin elastomer (TPO), polyester elastomer (TPEE), thermosetting rubber such as silicon rubber (Si), nitrile rubber (NBR), butyl rubber (IIR), etc. It is possible to select and use as appropriate.

  According to the hermetic cap device according to the present invention, the device configuration can be simplified and the assembling work can be facilitated by reducing the number of parts, and the effect of reducing the manufacturing cost can be sufficiently obtained.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Embodiment 1>
FIG. 1 is a longitudinal sectional view (before mounting of an eyebrow pencil) showing the overall configuration and operation of an airtight cap device according to Embodiment 1 of the present invention, and FIG. 2 is a longitudinal sectional view showing the overall configuration and operation of the airtight cap device. FIG. 3 is a longitudinal sectional view (after attachment of the eyebrow pencil) showing the overall structure and operation of the airtight cap device (when the eyebrow pencil is attached), and FIG. 4 is a perspective view showing an inner cylinder as a component of the airtight cap device. 5 is a sectional view showing the inner cylinder, FIG. 6 is a side view showing the inner cylinder, and FIG. 7 is an AA sectional view of FIG.

  In the first embodiment, the hermetic cap device is a pen-type cosmetic main body, and is provided in a cylindrical wooden shaft of a cosmetic pencil (hereinafter referred to as an eyebrow pencil) that can correct or arrange an eyebrow mold. It is used for the purpose of preventing dry solidification of a solid cosmetic material as a volatile content to be filled.

  As shown in FIGS. 1 to 3, the airtight cap device is configured to include a cap 1 including an outer cap 11 and an inner cylinder 12 having an elastic body 12 a formed on a side wall.

  Hereinafter, each of these components will be described in more detail.

(1) Cap 1
As shown in FIGS. 2 and 3, the cap 1 is configured to be attached to the eyebrow pencil 2 so as to cover the tip of the eyebrow pencil 2, that is, the portion where the solid cosmetic material as the volatile content is exposed. ing.

  And the cap 1 is comprised as what consists of the outer cap 11 and the inner cylinder 12, as shown in FIGS. 1-3.

  As shown in these drawings, the outer cap 11 has a valve seat 21 formed over the entire circumference on the side wall.

  By such an outer cap 11, the inner cylinder 12 is brought to the opening side of the outer cap 11 through the original restoring force of the elastic body 12 a obtained by the reaction force of the inner cylinder 12 obtained from the eyebrow pencil 2 and crushed between the outer cap 11. By energizing, it is possible to press the valve body 22 formed over the entire circumference on the side wall of the inner cylinder 12 to be described later against the valve seat 21, and as a result, the airtightness in the cap 1 is increased. It is possible to secure the basic function of the airtight cap device according to the first embodiment, which is to ensure the above.

  On the other hand, as shown in FIGS. 1 to 3, the inner cylinder 12 is configured to be accommodated in the outer cap 11 so as to be slidable in the axial direction.

  And as shown in FIGS. 4-7, the inner cylinder 12 has the valve body 22 formed over the perimeter in the side wall (refer also FIGS. 1-3).

  Here, the valve body 22 in the inner cylinder 12 is provided in the site | part which opposes the valve seat 21 in the outer cap 11, as shown in FIGS.

  With such an inner cylinder 12, the outer periphery of the eyebrow pencil 2 can be more closely attached to the inner periphery of the outer cap 11 than the notch hole 24 of the inner cylinder 12 by attaching the cap 1 to the eyebrow pencil 2. It has become.

  In addition, the inner cylinder 12 is urged toward the opening side of the outer cap 11 through the original restoring force of the elastic body 12a obtained from the eyebrow pencil 2 and crushed between the outer cap 11 and the inner cylinder 12. The valve body 22 formed over the entire circumference of the 12 side walls can be pressed against the valve seat 21 formed over the entire circumference of the side wall of the outer cap 11 described above, and as a result, The basic function of the hermetic cap device according to the first embodiment of ensuring the hermeticity in the cap 1 while reliably preventing the so-called pumping phenomenon can be ensured.

  Further, as shown in FIGS. 1 to 5, the inner cylinder 12 is a communication that allows the space on the opening side of the outer cap 11 and the space in the elastic body 12 a to communicate with each other in the space in the inner cylinder 12. The hole 23 is formed.

  When the tip of the eyebrow pencil 2 is pushed into the inner cylinder 12 by such an inner cylinder 12, the outer periphery of the eyebrow pencil 2 is brought into close contact with the inner periphery of the inner cylinder 12. The air in the inner cylinder 12 can be discharged out of the cap 1 through the gap 21, and as a result, when the eyebrow pencil 2 is attached to the cap 1, the air pressure in the inner cylinder 12 increases (so-called pump phenomenon). ) Can be reliably prevented.

  And the elastic body 12a is formed in the side wall of the inner cylinder 12 in this Embodiment 1 by providing the notch hole 24 which exhibits a spiral shape.

  As described above, the reason for requiring the inner cylinder 12 to form the elastic body 12a on the side wall is to avoid providing the elastic body as a separate independent component in addition to the inner cylinder, thereby reducing the number of parts. This is to provide an airtight cap device capable of simplifying the device configuration and facilitating assembly work. Therefore, if it plays such a role, instead of the inner cylinder 12 having the side wall provided with the spiral cutout hole 24 in the present invention, the side wall provided with the cutout hole not exhibiting the spiral shape. You may use the other inner cylinder which has.

(2) Elastic body 12a
As shown in FIGS. 1 to 3, the elastic body 12 a is accommodated in the outer cap 11, and presses the valve body 22 against the valve seat 21 by urging the inner cylinder 12 toward the opening side of the outer cap 11, thereby closely contacting the elastic body 12 a. It is configured to fulfill the function of

  And the elastic body 12a in this Embodiment 1 is formed by providing the notch hole 24 which exhibits the helical form in the side wall of the inner cylinder 12, as shown in FIGS.

  As described above, the elastic body 12a is required to be formed on the side wall of the inner cylinder 12 by avoiding providing the elastic body 12a as a separate independent component in addition to the inner cylinder 12. This is because an airtight cap device capable of simplifying the device configuration and facilitating the assembly work through the reduction. Therefore, if it plays such a role, in the present invention, instead of the elastic body 12a having the spiral cutout hole 24 formed on the side wall of the inner cylinder 12, a spiral shape is formed on the side wall of the inner cylinder 12. It is possible to use an elastic body or other elastic body formed with a notched hole that does not exhibit the above.

  Note that the elastic body 12a formed by forming the notch hole 24 in the side wall of the inner cylinder 12 reliably exhibits the original shape restoring force in the axial direction as in the case of the conventional elastic body provided as a separate and independent component. It is possible to make it. That is, the elastic body 12a also presses the valve body 22 formed over the entire circumference on the side wall of the inner cylinder 12 against the valve seat 21 formed over the entire circumference on the side wall of the outer cap 11 described above. As a result, it is possible to ensure the basic function of the airtight cap device according to the first embodiment of ensuring airtightness in the cap 1.

  As described above, according to the hermetic cap device in the first embodiment, the elastic body 12a is not provided as a separate and independent component, but is formed on the side wall of the inner cylinder 12, so that the number of components is reduced. Thus, it is possible to simplify the device configuration and facilitate the assembly work, and as a result, it is possible to sufficiently obtain the effect of reducing the manufacturing cost.

<Embodiment 2>
FIG. 8 is a longitudinal sectional view showing the entire configuration and operation of the hermetic cap device according to Embodiment 2 of the present invention (before the brush pen is mounted), and FIG. 9 is a longitudinal sectional view showing the entire configuration and operation of the hermetic cap device. FIG. 10 is a perspective view showing the inner cylinder 12 as a component of the hermetic cap device, FIG. 11 is a sectional view showing the inner cylinder, FIG. 12 is a side view showing the inner cylinder, and FIG. It is AA sectional drawing of FIG. Components similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted here.

  The hermetic cap device according to the second embodiment is a pen-type cosmetic main body, which is a piston-extruded liquid cosmetic container with a brush (hereinafter referred to as a brush pen) that can extrude and apply liquid cosmetic appropriately. It is used for the purpose of preventing the liquid cosmetic material, which is a volatile content filled in the cylindrical shaft body, from drying and solidifying.

  That is, the basic configuration of the hermetic cap device according to the second embodiment is to prevent drying and solidification of volatile contents (not shown) filled in the brush pen 3 as shown in FIGS. This is substantially the same as in the first embodiment.

  However, this airtight cap device is different from the first embodiment in that the brush pen 3 is gradually closer to the outer periphery, that is, the tip, which should be in close contact with the inner periphery on the opening side of the outer cap 11 than the partition wall 25 of the inner cylinder 12. The taper portion 31 is tapered as shown in FIG. The cap 1 is hermetically sealed by providing a partition wall 25 on the inner cylinder 12 and by restoring the original shape of the elastic body 12 a obtained by the outer cap 11 directly receiving the reaction force from the brush pen 3 and crushed between the inner cylinder 12. This is ensured by pressing the inner circumference of the outer cap 11 from the partition wall 25 of the inner cylinder 12, that is, by pressing the valve element 22 of the inner cylinder 12 against the tapered portion 31 of the brush pen 3.

  Here, the partition wall 25 is located on the tip side of the inner cylinder 12 and the brush pen 3 in close contact with each other so that the inner cylinder 12 can be kept airtight when the inner circumference of the inner cylinder 12 is in close contact with the outer periphery of the brush pen 3. In FIG. 2, a U-shape that opens in the same direction as the opening of the outer cap 11 in a longitudinal sectional view is formed, and is provided in a direction that crosses the inner cylinder 12.

  In the second embodiment, as shown in FIG. 9, the outer cap 11 is formed on the outer periphery of the brush pen 3 with the convex portions 32 formed at several locations on the inner periphery of the outer cap 11. A reaction force is directly obtained from the brush pen 3 by fitting the annular concave portion 33 (or the annular concave portions formed on the inner circumference of the outer cap over the entire circumference of the outer circumference of the brush pen). I am going to do that.

  Therefore, also in the airtight cap device according to the second embodiment, as in the first embodiment, the airtight cap device according to the second embodiment that ensures the airtightness in the cap 1 while reliably avoiding the so-called pump phenomenon. The basic function is ensured, and the elastic body 12a is formed by providing the cutout hole 24 in the side wall of the inner cylinder 12. Therefore, the device configuration is simplified and the assembly work is facilitated by reducing the number of parts. As a result, the effect of reducing the manufacturing cost can be sufficiently obtained.

  On the other hand, in the second embodiment, the partition wall 25 formed on the inner cylinder 12 is configured to be inserted inside the elastic body 12a as shown in FIGS. Specifically, as shown in these drawings, the partition wall 25 is formed in a cap shape having a distal end side portion that opens in the same direction as the opening side of the outer cap 11 and that can accommodate the distal end portion of the brush pen 3. The tip end portion is inserted inside the elastic body 12a.

  Therefore, according to the hermetic cap device according to the second embodiment, when the inner cylinder 12 is provided with the partition wall 25 to ensure the hermeticity in the cap 1, when the cap 1 is attached to the eyebrow pencil 2, the eyebrow pencil 2 And the elastic body 12a can be partially wrapped, and as a result, the overall length of the apparatus can be considerably shortened.

  As described above, in the present embodiment, the case where the present invention is applied to a brush pen such as a brush pen or an eyebrow pencil has been described. However, the present invention is not limited to such an embodiment. As long as it is used for the purpose of preventing drying and solidification of volatile contents such as solids and liquids, it is not limited to cosmetics and can be widely applied to writing instruments, pharmaceuticals and other main bodies.

It is a longitudinal cross-sectional view (before mounting | wearing an eyebrow pencil) which shows the whole structure and effect | action of the airtight cap apparatus concerning Embodiment 2 of this invention. It is a longitudinal cross-sectional view (at the time of mounting | wearing an eyebrow pencil) which shows the whole structure and effect | action of the same airtight cap apparatus. It is a longitudinal cross-sectional view (after mounting | wearing an eyebrow pencil) which shows the whole structure and effect | action of the same airtight cap apparatus. It is a perspective view which shows the inner cylinder which is a component of the airtight cap apparatus. It is sectional drawing which shows the same inner cylinder. It is a side view which shows the same inner cylinder. It is AA sectional drawing of FIG. It is a longitudinal cross-sectional view (before mounting | wearing with a brush pen) which shows the whole structure and effect | action of the airtight cap apparatus which concern on Embodiment 2 of this invention. It is a longitudinal cross-sectional view (after mounting | wearing with a brush pen) which shows the whole structure and effect | action of the same airtight cap apparatus. It is a perspective view which shows the inner cylinder which is a component of the airtight cap apparatus. It is sectional drawing which shows the same inner cylinder. It is a side view which shows the same inner cylinder. It is AA sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cap 2 Eyebrow pencil 3 Brush pen 11 Outer cap 12 Inner cylinder 12a Elastic body 21 Valve seat 22 Valve body 23 Communication hole 24 Notch hole 25 Partition 31 Tapered part 32 Convex part 33 Annular recessed part

Claims (1)

An outer cap having an opening, and a cap comprising an inner cylinder accommodated in the outer cap so as to be movable in the axial direction;
An elastic body accommodated in the outer cap and biasing the inner cylinder toward the opening;
When the cap is attached to the main body so as to cover the tip, the inner cylinder is urged toward the opening side by the original restoring force of the elastic body, so that the inner cap is brought into close contact with the outer cap and the main body. An airtight cap device that ensures the airtightness of
The elastic body is formed by providing a cutout hole in the side wall of the inner cylinder ,
The cap is hermetically sealed with the valve seat formed over the entire periphery of the side wall of the outer cap while the outer periphery of the main body is closely attached to the inner periphery of the inner cylinder on the opening side of the notch hole. Secured by closely contacting the valve body formed over the entire circumference of the side wall of the inner cylinder,
The airtight cap device is characterized in that the inner cylinder includes a communication hole that allows the space on the opening side of the outer cap and the space in the elastic body to communicate with each other with respect to the elastic body .

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