JP5328395B2 - Liquid applicator cap - Google Patents

Description

  The present invention covers a coated body of a liquid applicator in which a coating liquid such as a liquid cosmetic is stored in a shaft cylinder by a direct liquid type or a batting type, and the stored coating liquid is applied by a coated body. Regarding the cap.

  In liquid applicators that apply application liquids such as liquid cosmetics to the target part by the application part (application body), the application liquid (including fluid) is stored inside the inner cylinder, and a valve set is provided at the front end opening of the inner cylinder. The inner cylinder is accommodated in the outer cylinder so as to be movable in the axial direction by a knocking operation, and the stored liquid is allowed to flow to the application section when the valve is opened.

  In this type of liquid applicator, for example, in Japanese Utility Model Laid-Open No. 1-122886 (Patent Document 1), the tip portion of the liquid introduction tube for discharging the liquid when the valve is open is inserted into the neck of the application body (brush). In order to prevent the liquid discharged from the valve from leaking to the outer periphery of the liquid introduction pipe, a packing is provided on the end face of the valve seat (saddle) of the valve component. In order to prevent liquid leakage while sliding, the packing member uses an elastic rubber material or soft resin.

  However, in the mechanism of Patent Document 1, in particular, when a liquid containing a solvent is stored, the solvent component permeates from the packing portion, and the neck may be dried even when the cap is fitted.

  Therefore, as a method for suppressing the neck drying, a liquid storage part may be provided also on the cap side. For example, in Japanese Patent Application Laid-Open No. 2008-6267 (Patent Document 2), a liquid cosmetic absorption holding means capable of supplying one liquid cosmetic to the tip is provided in the cap.

  Further, for example, in Japanese Patent Laid-Open No. 10-174613 (Patent Document 3), a tank containing liquid cosmetic material is provided in a cap (lid) via a sealing member.

Actual Kaihei 1-122886 JP 2008-6267 JP-A-10-174613

  However, in Patent Document 1 described above, particularly when a solvent-based liquid is stored, the solvent component permeates from the packing portion, and even if the cap is fitted, the neck may dry due to long-term non-use or the like. .

  Further, in Patent Documents 2 and 3, when the cap is tightened and stored for a long time, the neck can be prevented from drying, but the coating liquid flows more than necessary and gets over the coated body so that the coated body holding part such as the front shaft The outer wall may become dirty with liquid.

  In view of the above-described circumstances, the present invention provides a cap for a liquid applicator that can reliably prevent the coated body from drying even after long-term storage and the coating part's holding part to be stained with the coating liquid. It is something to try.

  The present invention relates to a cap of a liquid applicator.

The present invention is a liquid applicator cap that detachably covers the tip when the liquid applicator provided with the applicator projecting from the tip of the applicator main body is not used,
The cap has a double structure in which an inner cap in close contact with the periphery of the tip of the applicator body is provided in the outer cap,
A lid is provided on the inner side of the inner cap so as to face the application body,
A structure for storing the solvent of the coating liquid in a storage space between the inner cap and the lid,
A liquid applicator characterized in that a replenisher for supplying the solvent of the coating solution stored in the storage space to the lid and supplying the solvent from the storage space to the space around the coating body is provided in the lid. It is a cap.

  The solvent of the coating solution in the storage space includes not only storing the solvent itself but also storing it in the form of a liquid containing the solvent, for example, the coating solution itself. Moreover, the storage mode may store the solvent directly in the storage space, or store the porous body or fiber body by impregnating the solvent.

In the present invention, the replenishing portion forms a hole in the lid body for communicating the storage space and the space around the coating body, and a solvent-permeable resin elastic body is fitted into the hole, and the resin elastic body is interposed therebetween. The solvent is supplied to the space around the coated body,
It is preferable that the inner cap is formed with a protruding portion that presses the resin elastic body toward the application body side.

  Further, in the present invention, the hole has a structure having a sloped diameter-reduced portion that narrows in the shape of a mortar on the application body side, and the resin elastic body is in contact with the slope of the slope-like diameter-reduced portion of the hole. It is preferable to be fitted inside.

  Further, in the present invention, the hole has a structure in which a stepped diameter-reduced portion that is thinned with a step on the application body side is provided. It is preferable that the contact hole is fitted in the hole.

  Further, in the present invention, the replenishing part partitions the storage space and the space around the application body in the lid body and forms a solvent-permeable resin film body, and the periphery of the application body through the resin film body It is preferable to supply a solvent to the space.

  According to the cap of the liquid applicator of the present invention, a lid is provided inside the inner cap so as to face the applicator, and the solvent of the coating liquid is stored in a storage space between the inner cap and the lid. The structure is The lid body is provided with a replenishment section for infiltrating the solvent of the coating solution stored in the storage space and supplying the solvent from the storage space to the space around the coating body, and the coating body is fitted with a cap. The solvent can be supplied into the surrounding space. For this reason, even when the cap is fitted, the application body can be reliably prevented from drying and becoming unapplicable even if it is unused for a long period of time. In addition, the replenishment unit allows the solvent of the coating solution to permeate and supply it to the space around the coating body, so that an appropriate amount of solvent can be supplied. It is possible to reliably prevent contamination with a solvent.

  In the present invention, the replenishing portion forms a hole in the lid body for communicating the storage space and the space around the application body, and a solvent-permeable resin elastic body is fitted into the hole, and the resin elastic body is interposed therebetween. The solvent was supplied to the space around the coated body. The inner cap is formed with a protruding portion that presses the resin elastic body toward the application body side, thereby reliably preventing unnecessary voids from being generated in the hole by pressing the resin elastic body in the hole. be able to.

  In addition, the hole has a structure having a sloped diameter-reduced portion that narrows in the shape of a mortar on the application body side, and the resin elastic body is fitted into the hole in contact with the sloped surface of the slope-like diameter-reduced portion of the hole. There is also a way to make things. If it does so, it can prevent reliably that a liquid and a solvent come out from a storage space by sealing a storage space with a cover body and a resin elastic body.

Further, the hole has a structure having a stepped diameter-reduced portion that is stepped and narrowed on the application body side, and the resin elastic body is brought into contact with the side opposite to the application body of the stepped diameter-reduced portion of the hole. There is also a way to make it fit. In this case, since the contact is made on the side opposite to the application body of the stepped diameter-reduced portion, the contact pressure can be easily set by setting the length of the protruding portion and the airtightness can be easily set.

  In addition, the replenishing part partitions the storage space and the space around the application body in the lid and forms a solvent permeable resin film body, and the solvent is introduced into the space around the application body via the resin film body. If it is made to supply, a supply part can be shape | molded in a cover body without interposing an elastic resin body. In addition, since the number of parts can be reduced, for example, an elastic resin body is unnecessary, a cap having the effects of the present invention such as drying prevention can be configured with a simple configuration.

It is explanatory drawing of the liquid applicator which concerns on Embodiment 1 of this invention, Comprising: (a) is a whole side view, (b) is a whole longitudinal cross-sectional view. FIG. 3 is a detailed explanatory view in which the periphery of the cap of the liquid applicator according to Embodiment 1 is cut vertically. It is explanatory drawing of the cover body provided in the cap of the liquid applicator shown in FIG. 1, FIG. 2, (a) is the front view seen from the storage space side, (b) is a longitudinal cross-sectional view of a cover body, (c) FIG. 3 is a perspective view of a lid. FIG. 6 is a detailed explanatory view of a longitudinal section around a cap of a liquid applicator according to a second embodiment. It is explanatory drawing of the cover body provided in the cap of the liquid applicator shown in FIG. 4, (a) is the front view seen from the storage space side, (b) is a longitudinal cross-sectional view of a cover body, (c) is a cover body FIG. It is the detailed explanatory drawing which carried out the longitudinal section around the cap of the liquid applicator concerning Embodiment 3. It is explanatory drawing of the cover body provided in the cap of the liquid applicator shown in FIG. 6, Comprising: (a) is the front view seen from the storage space side, (b) is a longitudinal cross-sectional view of a cover body, (c) is a cover body FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 to 3 are explanatory views of the liquid applicator and its cap according to Embodiment 1 of the present invention, and FIGS. 4 to 5 are explanatory views of the liquid applicator and its cap according to Embodiment 2 of the present invention, FIG. -FIG. 7 is explanatory drawing of the liquid applicator and its cap concerning Embodiment 3 of this invention. In the figure, the same reference numerals indicate the same items.

  As shown in FIGS. 1 to 2, the applicator (liquid applicator) according to the embodiment is provided with an applicator 16 projecting from the tip portion 10 a of the outer shaft 10 (applicator main body). On the other hand, the tip 10a is detachably covered with a cap 24 when not in use. The embodiment relates to a cap 24 having a double structure in which an inner cap (inner cap) 24a that is in close contact with the periphery of the tip portion (front shaft 22) of the applicator main body is provided in the outer cap (cap body).

  Specifically, in the applicator, a tank-shaped inner shaft 12 is disposed in a substantially cylindrical outer shaft 10 having an open rear end portion 10b so as to be movable back and forth. When the user knocks the rear end 12b of the inner shaft 12 toward the front, the inner shaft 12 moves forward with respect to the outer shaft 10 to operate the valve mechanism 14, and the coating liquid is provided at the front end 10a of the outer shaft 10. The applied body 16 is supplied.

  The outer shaft 10 distal end portion 10a has a stepped and narrow diameter, and has a bowl-like shape of an ink introduction pipe (a conduit for circulating the coating liquid from the valve mechanism 14 to the application body 16) 18 on the front surface of the distal end portion 10a. The outer periphery (expanded in a flange shape) of the tip 18a is brought into contact. The rear portion of the application body 16 is inserted into the tip end portion 18 a of the ink introduction tube 18 through the seal ring 20. In a state where the seal ring 20 and the tip end portion 18a of the ink introduction tube 18 are passed through the hollow portion of the hollow cylindrical tip shaft 22 from the center of the application body 16, the tip shaft 22 is moved to the outer shaft. The application body 16, the seal ring 20, and the ink introduction tube distal end portion 18 a are fixed to the outer shaft 10 by being externally fitted to the distal end portion 10 a.

  In the embodiment, the application body 16 may be either a fiber bundle or an open cell body.

  Further, a cap 24 that covers and protects the application body 16 is detachably fitted to the outer shaft tip portion 10a, and an inner cap 24a on the inner side presses the front shaft 22 by a spring 24b. Energized. Details of the configuration of the cap 24 will be described later.

  The inner shaft 12 has a rear end portion 12b closed and a liquid storage space 12c for containing the coating liquid inside (there may be a stirring ball 12d). On the other hand, the valve mechanism 14 is housed in the front end portion 12a and is fixed by the inner front shaft 26. Specifically, in a state where the valve mechanism 14 is housed in the tapered front end portion 12a of the inner shaft 12, the rear end portion 18b of the ink introduction pipe 18 is slidably connected to the valve mechanism 14, and the front end portion of the valve mechanism 14 is connected to the front end portion 12a. The inner front shaft 26 is interposed and fixed to the inner shaft tip 12a by screwing or the like.

  Here, the valve mechanism 14 is configured so that the valve seat body 30 and the valve stem body 38 move relative to each other in the axial direction along the communication path between the liquid storage space 12 c that stores the coating liquid and the coating body 16. The supply toward the coating body 16 is allowed / stopped.

  The valve seat body 30 of the valve mechanism 14 is a substantially cylindrical body having openings at both ends in the axial direction. A liquid-tight portion that slides on the valve rod body 38 is formed on the inner front side (front valve member 32) and rear side (rear valve member 34), the rear side opening faces the liquid storage space 12c, and The front opening is provided facing the application body 16 side.

  Specifically, as shown in FIG. 1B, the front valve member 32 has a substantially cylindrical shape as a whole with the flange diameter expanded at the front end. Further, the rear valve member 34 has a flange with an enlarged diameter at the front end, and the front valve member 32 is fitted rearward into the front portion of the rear valve member 34. The front side inner peripheral surface of the rear valve member 34 is a front side liquid-tight portion in sliding contact with the front portion of the valve rod body 38, and the rear side end has a substantially cylindrical shape with a reduced diameter in a stepped shape. The inner peripheral surface of the reduced diameter portion is a rear side liquid-tight portion of the rear portion of the valve rod body 38. The front valve member 32 is concentrically inserted rearward into the rear valve member 34 and overlapped with the flanges, covered with the inner front shaft 26 and screwed into the inner shaft tip 12a to be fixed. .

  The front surface of the reduced diameter portion at the rear side end of the rear valve member 34 is a portion that receives the spring member 36.

  The valve rod body 38 is accommodated in the hollow of the front side valve member 32 and the rear side valve member 34 so as to be able to advance and retract.

  On the outer periphery of the valve stem body 38, the front side piston member 38a that is slidably contacted with the front side valve member 32 in the valve seat body 30 in a liquid-tight state is a rear side in the valve seat body 30. A rear-side piston portion 38b that is slidably contacted with the rear-side liquid-tight portion of the valve member 34 in a liquid-tight state is provided, and between the outer periphery of the substantially central portion of the valve rod body 38 and the inner surface of the valve seat body 30. Is provided with a space for circulating the coating liquid. Specifically, the front-side piston portion 38a of the valve stem body 38 is formed by a flexible umbrella-shaped flange having an increased diameter. Further, the rear piston portion 38b is formed on the smooth outer peripheral surface so as to be rearwardly narrowed, and when the valve rod body 38 moves rearward, the opening of the rear valve member 34 has a narrow rear end portion. After passing, the thicker central portion is in close contact with the rear liquid-tight portion of the rear valve member 34 and is in sliding contact therewith.

  As described above, the valve mechanism 14 has the spring member 36 interposed between the valve seat body 30 and the valve rod body 38, and the spring member 36 contacts the piston portion 38a on the front side of the valve rod body 38 from the rear side. The valve seat body 30 is biased so as to be positioned at the front side end. Therefore, if the rear end of the inner shaft 12 is knocked and no pressing force is applied, the front piston portion 38a is positioned in contact with the front end of the front liquid-tight portion by the spring member 36 as shown in FIG. The inner front shaft 26 abuts against the annular protrusion 42 in the outer shaft 10 to prevent the inner shaft 12 from moving further backward and coming off.

  In addition, a rear end portion 18b of an ink introduction pipe (pipe) 18 that connects the front side opening to the application body 16 is inserted into the front side opening of the valve seat body 30 (the front end side opening of the front side valve member 32). Has been provided. A guide pipe 44 for introducing the coating liquid toward the coating body 16 is fitted into the tip end portion 18 a of the ink introduction pipe 18.

  Here, as shown in FIG. 2, the cap 24 according to the first embodiment is provided with a lid 28 inside the inner cap 24 a so as to face the application body 16.

  The cap 24 has a structure for storing the solvent of the coating liquid in a storage space 24c between the inner cap 24a and the lid 28, and stores the solvent by infiltrating the solvent of the coating liquid into the lid 28. A replenishing section 46 for supplying the space around the application body 16 from the space 24c is provided.

  The replenishing portion 46 has a hole 46a that allows the storage space 24c and the space around the coating body 16 to communicate with the lid body 28, and a solvent-permeable resin elastic body 48 is fitted into the hole 46a. The solvent is supplied to the space around the application body 16 through the body 48. The inner cap 24a has a structure in which a protrusion 24d that presses the resin elastic body 48 toward the application body 16 is formed in a columnar shape and protrudes rearward.

  As long as the solvent of the coating liquid stored in the storage space 24c contains at least a solvent, not only the form of the solvent but also the coating liquid itself may be stored. Alternatively, a porous body or a fiber body may be accommodated in the storage space 24c and impregnated with a solvent so that the solvent is stably accommodated.

Resin elastic body 48 is rubber, NBR, silicon, SBR (styrene butadiene rubber), FKM (fluoro rubber), ACM (acrylic rubber), CR (chlorobrene rubber), IIR (butyl rubber), EPDM (ethylene propylene rubber), etc. Various materials can be used as long as they can penetrate the solvent of the coating solution.
The material of the lid 28 can be a resin such as high density polyethylene (HDPE) or PBT.

The hole 46a has a structure in which a sloped diameter-reduced portion 50 that is thinned in a mortar shape on the application body 16 side is provided. The resin elastic body 48 is in contact with the inner surface of the hole 46a and the inclined surface of the inclined reduced diameter portion 50 and is fitted into the hole 46a.
As shown in detail in FIG. 2 to FIG. 3, the lid body 28 has a front cylindrical portion 28 a and a rearward substantially rib-like portion 28 b formed continuously, and a hole 46 a is formed through the shaft center. A plurality of rib portions 28c are formed in the front cylindrical portion 28a so as to protrude toward the center of the shaft. The diameter of the rib portion 28c is reduced near the rear end of the cylindrical portion 28a to form a slope-shaped reduced diameter portion 50. The minimum diameter portion of the slope-shaped reduced diameter portion 50 is released to the flange-shaped portion 28b side at the minimum diameter portion of the hole 46a.

  The resin elastic body 48 fitted in the hole 46a is pressed by the projecting portion 24d and pressed against the slope-shaped reduced diameter portion 50, and is sandwiched by the rib portion 28c on the inner side surface of the hole 46a. The valley between them becomes an air passage. The solvent component is diffused from the resin elastic body 48 in a state where the resin elastic body 48 is in contact with the inclined surface, and the solvent component is supplied to the space around the application body 16.

  In the first embodiment, a solvent-permeable resin elastic body 48 is fitted into the hole 46 a, and the solvent is supplied to the space around the application body 16 through the resin elastic body 48. The inner cap 24a is formed with a protruding portion 24d that presses the resin elastic body 48 toward the hole 46a, so that the resin elastic body 48 is pressed in the hole 46a to reliably prevent a gap. Can do.

  Further, the hole 46a has a structure in which a slant-like reduced diameter portion 50 whose application body 16 side becomes thin in a mortar shape is provided, and the resin elastic body 48 is in contact with the slope of the slope-like reduced diameter portion 50 of the hole 46a. It is fitted in the hole 46a. By sealing the storage space 24c with the lid body 28 and the resin elastic body 48, it is possible to prevent the coating liquid from inadvertently coming out of the storage space 24c.

  Next, the cap 24 of the liquid applicator according to the second embodiment will be described with reference to FIGS. The same parts as those of the cap 24 of the applicator of Embodiment 1 are given the same reference numerals.

  As shown in FIGS. 4 to 5, in the cap 24 of the applicator according to the second embodiment, the hole 46 a has a structure in which a step-shaped diameter-reduced portion 52 that is stepped and narrowed is provided. The resin elastic body 48 is fitted into the hole 46a in contact with the side surface of the stepped diameter-reduced portion 52 of the hole 46a opposite to the application body 16.

  The hole 46a has a structure in which a stepped diameter-reduced portion 52 having a stepped and narrow end on the application body 16 side is provided. The resin elastic body 48 is in contact with the opposite side surface of the application body 16 of the stepped reduced diameter portion 52 and is fitted into the hole 46a. Since the stepped corner portion of the stepped reduced diameter portion 52 is in contact with the opposite side surface of the application body 16, the contact pressure can be easily set by setting the length of the projection 24d and the like, and the level of airtightness is set. It becomes easy.

  Next, the cap 24 of the liquid applicator according to the third embodiment will be described with reference to FIGS. The same parts as those of the liquid applicator and cap 24 of the first embodiment are denoted by the same reference numerals.

  As shown in FIGS. 6 to 7, the replenishing portion 46 forms a solvent permeable resin film 54 that partitions the storage space 24 c and the space around the application body 16 in the lid 28, and A solvent is supplied to the space around the coated body through the film body 54.

  The material of the lid 28 can be high density polyethylene (HDPE) or PBT, linear low density polyethylene (LLDPE), low density polyethylene (LDPE), or PE.

  The resin film body 54 may be formed integrally with the lid body 28 or may be formed separately.

In addition, since the cap according to the third embodiment does not require the formation of the resin elastic body 48 according to the first and second embodiments, the replenishing portion 46 can be formed with a simple configuration with a small number of parts.
Further, in the cap according to the third embodiment, the projecting portion 24d is formed, and the projecting portion 24 faces the hole 46a in the cylindrical portion 28a of the lid body 28, whereby the passage cross-sectional area to the resin film body 54 is increased. The amount of the solvent that comes into contact with the resin film body 54 can be set. The present invention is not limited to this, and the configuration of the inner cap 24 a and the lid body 28 may be simplified without forming the cylindrical portion 28 a and the protrusion 24 of the lid body 28. In this case, the supply amount of the solvent can be adjusted by setting the film thickness of the resin film body 54.

10 Outer shaft (shaft body)
10a Outer shaft tip 10b Outer shaft rear end 12 Inner shaft 12a Inner shaft tip 12b Inner shaft rear end 12c Liquid storage space 12d Stirring ball 14 Valve mechanism 16 Application body 18 Ink introduction tube 18a Ink introduction tube Portion 18b rear end portion 20 of ink introduction tube seal ring 22 front shaft 24 cap 24a inner cap 24b spring 24c storage space 24d projection portion 24d projection portion 26 inner front shaft 28 lid body 28a cylindrical portion 28b of lid body 28c Lid portion 30 of the lid body Valve seat body 32 Front valve member 34 Rear valve member 36 Spring member 38 Valve rod body 38a Front side piston part 38b Rear side piston part 40 Space 42 Annular projection 44 Guide pipe 46 Replenishment Portion 46a Hole 48 Resin elastic body 50 Slope-like reduced diameter portion 52 Step-like reduced diameter portion 54 Resin film body

Claims (5)

A liquid applicator cap that detachably covers the tip when the liquid applicator is provided so that the applicator protrudes from the tip of the applicator main body,
The cap has a double structure in which an inner cap in close contact with the periphery of the tip of the applicator body is provided in the outer cap,
A lid is provided on the inner side of the inner cap so as to face the application body,
A structure for storing the solvent of the coating liquid in a storage space between the inner cap and the lid,
A liquid applicator characterized in that a replenisher for supplying the solvent of the coating solution stored in the storage space to the lid and supplying the solvent from the storage space to the space around the coating body is provided in the lid. cap. The replenishing part forms a hole in the lid for communicating the storage space and the space around the application body, and a solvent-permeable resin elastic body is fitted into the hole, and the periphery of the application body is interposed through the resin elastic body The solvent is supplied to the space of
The cap of the liquid applicator according to claim 1, wherein the inner cap is formed with a protruding portion that presses the resin elastic body toward the applicator.   The hole has a structure in which a slant-like diameter-reduced portion that narrows in the shape of a mortar is provided on the application body side, and the resin elastic body is fitted into the hole in contact with the slope of the slant-like diameter-reduced portion of the hole. The cap of the liquid applicator according to claim 2.   The hole has a structure having a stepped diameter-reducing portion that is stepped and thinned on the side of the application body, and the resin elastic body is fitted into the hole in contact with the side opposite to the application body of the stepped diameter-reducing portion of the hole. The cap of the liquid applicator according to claim 2, wherein the cap is a liquid applicator.   The replenishing part partitions the storage space and the space around the application body on the lid and forms a solvent permeable resin film body, and supplies the solvent to the space around the application body through the resin film body The liquid applicator cap according to claim 1, wherein the cap is applied.

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