Brush-type applicator

Abstract

The objective is to provide a brush-type applicator that allows for easy attachment and detachment of the impregnating material to and from the application area. [Solution] A brush-type applicator 1 having a gripping part and an applicator part 20, wherein the applicator part 20 is a long frame shape having a pair of long sides 21a and a pair of short sides 21b, and each of the pair of long sides 21a has a base 21 on which a plurality of comb teeth 22 are arranged along the longitudinal direction, and each has a plurality of bridging parts 23 each having a pair of columnar parts 23a provided between adjacent comb teeth 22 of the pair of long sides 21a and a bridging part 23b connecting one columnar part 23a and the other columnar part 23a, and each has a plurality of pairs of locking protrusions 24 provided on each of the pair of long sides 21a projecting toward the other long side 21a and facing each other with a gap between them, and an impregnating body 25 arranged on the base 21 and held between the plurality of bridging parts 23 and the plurality of pairs of locking protrusions 24.

Description

Technical Field

[0001] The present invention relates to a brush-type applicator.

Background Art

[0002] Conventionally, as an applicator for applying a liquid application material such as mascara, hair dye or the like to an application target such as hair, there has been known a brush-type applicator which includes a grip portion and an application portion provided with a plurality of comb teeth and an impregnation body, and is configured to be capable of applying the application material to the application target while combing the application target with the plurality of comb teeth in a state where the liquid application material is impregnated into the impregnation body (see, for example, Patent Document 1).

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] However, conventional brush-type applicators have a problem in that it is necessary to disassemble the application portion when attaching or detaching the impregnation body to or from the application portion, making the attachment and detachment of the impregnation body to or from the application portion cumbersome.

[0005] The present invention has been made in view of such problems, and an object of the present invention is to provide a brush-type applicator that allows easy attachment and detachment of an impregnation body to or from an application portion.

Means for Solving the Problem

[0006] (1) The present invention provides a brush-type applicator comprising a gripping portion and an applicator portion equipped with a plurality of comb teeth and an impregnating body, wherein the applicator portion is a long frame-shaped structure comprising a pair of long sides and a pair of short sides, and a base on which a plurality of the comb teeth are arranged along the longitudinal direction on each of the pair of long sides, and a plurality of bridging portions each comprising a pair of columnar portions provided between adjacent comb teeth in the longitudinal direction on the pair of long sides and a bridge portion connecting one of the columnar portions and the other, and a plurality of pairs of locking protrusions provided on each of the pair of long sides projecting toward the other long side and facing each other with a gap between them, and an impregnating body arranged on the base and held between the plurality of bridging portions and the plurality of pairs of locking protrusions.

[0007] (2) In the configuration of the brush-type applicator of the present invention described in (1) above, it is preferable that there is a gap between the end face of the long side portion that faces the opposite side of the comb teeth and the plurality of pairs of locking protrusions.

[0008] (3) In the brush-type applicator of the present invention, in the configuration of (1) or (2) above, it is preferable that the multiple pairs of locking protrusions are provided in the portion between adjacent pairs of column portions on the long side.

[0009] (4) In any one of the configurations (1) to (3) above, the brush-type applicator of the present invention is preferably provided with a pair of locking walls on each of the short sides that face the impregnated body.

[0010] (5) In any one of the configurations (1) to (4) above, the brush-type applicator of the present invention preferably has a projection on the surface of the bridging portion facing the impregnated body, and the projection is embedded in the impregnated body.

[0011] (6) In the brush-type applicator of the present invention, in the configuration of (5) above, the projections are provided on the surfaces of the multiple bridge portions facing the impregnated body, and it is preferable that the projections on one of the short sides with respect to the longitudinal center of the long side portion extend inclined toward the one short side portion, and the projections on the other short side with respect to the longitudinal center of the long side portion extend inclined toward the other short side portion.

[0012] (7) In the configuration of (5) above, the brush-type applicator of the present invention preferably has the projections provided on each of the bridge portions of the plurality of bridge portions, and the projections located on one of the short portions with respect to the longitudinal center of the long portion have their tips bent toward the one short portion, and the projections located on the other short portion with respect to the longitudinal center of the long portion have their tips bent toward the other short portion. [Effects of the Invention]

[0013] According to the present invention, a brush-type applicator can be provided that allows for easy attachment and detachment of the impregnating material to and from the application area. [Brief explanation of the drawing]

[0014] [Figure 1] This is a cross-sectional view of a brush-type applicator according to one embodiment of the present invention, shown attached to a container body. [Figure 2] Figure 1 is a front view of the coating area. [Figure 3] This is a cross-sectional view along line AA in Figure 2. [Figure 4] This is a cross-sectional view along line BB in Figure 2. [Figure 5] This is a cross-sectional view along the CC line in Figure 2. [Figure 6] This is a view of the coating section from the opposite side of the gripping section. [Figure 7] This figure shows how the impregnating material is attached to and detached from the application part of the brush-type applicator shown in Figure 1. [Figure 8] It is a cross-sectional view corresponding to FIG. 3 of a brush-type applicator according to another embodiment. [Figure 9] It is a rear view of the brush-type applicator shown in FIG. 8. [Figure 10] It is a cross-sectional view taken along line D-D in FIG. 8. [Figure 11] It is a cross-sectional view taken along line E-E in FIG. 8. [Figure 12] It is a cross-sectional view corresponding to FIG. 3 of a brush-type applicator provided with a protrusion according to a modified example. [Figure 13] It is a cross-sectional view of the brush-type applicator shown in FIG. 12 in a state before an impregnated body is attached. [Figure 14] It is a rear view of the brush-type applicator shown in FIG. 12 in a state before an impregnated body is attached. [Figure 15] It is a cross-sectional view taken along line F-F in FIG. 13. [Figure 16] (a) is a cross-sectional view showing a state where an impregnated body is attached to an application part using a jig in the brush-type applicator shown in FIG. 13, and (b) is a cross-sectional view taken along line G-G in (a). [Figure 17] It is a cross-sectional view corresponding to FIG. 3 of a brush-type applicator provided with a protrusion according to another modified example. [Figure 18] It is a rear view of the brush-type applicator shown in FIG. 17. [Figure 19] It is a cross-sectional view taken along line H-H in FIG. 17. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, the configuration of a brush-type applicator according to an embodiment of the present invention will be illustratively explained in detail with reference to the drawings.

[0016] As shown in FIG. 1, a brush-type applicator 1 according to one embodiment of the present invention includes a grip portion 10 and an application portion 20. In the present embodiment, a rod portion 11 is attached to the grip portion 10, and the application portion 20 is provided at the distal end of the rod portion 11.

[0017] The gripping portion 10 is configured in a cap shape, and the gripping portion 10 is screw-connected to the mouth portion 2a of the container body 2, thereby attaching the brush-type applicator 1 to the container body 2 and forming an applicator container 3 together with the container body 2. The container body 2 can contain liquid applicators such as mascara or hair dye. When the brush-type applicator 1 is attached to the container body 2, the applicator portion 20 is located inside the container body 2. The container body 2 may also be configured to have a scraping portion 2b at the mouth portion 2a for scraping off applicators adhering to the applicator portion 20.

[0018] As shown in Figures 2 and 3, the coating section 20 comprises a base 21, multiple comb teeth 22, multiple bridging sections 23, multiple pairs of locking protrusions 24, and an impregnating body 25.

[0019] The base 21 is a long, frame-like structure comprising a pair of long sides 21a and a pair of short sides 21b, each shorter than the long sides 21a, and is integrally attached to the tip of the rod 11 at one end in the longitudinal direction. In this embodiment, the base 21 and the rod 11 are made of synthetic resin. The inner portion of the base 21 enclosed by the pair of long sides 21a and the pair of short sides 21b forms an opening 21c. Furthermore, one side of the pair of long sides 21a parallel to the opening direction of the opening 21c (the left side in Figure 3) is the coating surface 21d.

[0020] Multiple comb teeth 22 are provided on the coated surface 21d of each of the pair of long sides 21a of the base 21, arranged along the longitudinal direction (up and down direction in Figure 2) of the long side 21a. As a result, the base 21 is provided with multiple comb teeth 22 arranged in two rows on either side of the opening 21c. The number of comb teeth 22 provided on one long side 21a is the same as the number of comb teeth 22 provided on the other long side 21a, and the arrangement of multiple comb teeth 22 in each row is also the same. In this embodiment, each comb tooth 22 has a mountain-like shape, gradually becoming thinner from the lower end to the tip, and is formed integrally with the long side 21a of the base 21 from a synthetic resin material. Note that in Figures 2 and 3, for convenience, only some of the comb teeth 22 are labeled with reference numerals.

[0021] Multiple bridging sections 23 are provided on the coated surface 21d of a pair of long sides 21a of the base 21. Each of the multiple bridging sections 23 is formed integrally with the long sides 21a of the base 21 from a synthetic resin material. Note that in Figures 2 and 3, for convenience, only some of the bridging sections 23 are labeled with reference numerals.

[0022] More specifically, each of the multiple bridging sections 23 has a pair of column sections 23a provided between adjacent comb teeth 22 in the longitudinal direction on the corresponding long side section 21a, and a bridge section 23b connecting a column section 23a on one long side section 21a to a column section 23a on the other long side section 21a. In this embodiment, the multiple bridging sections 23 are arranged between each other's column sections 23a, with two or three comb teeth 22 in between on each long side section 21a. Furthermore, in this embodiment, in each bridging portion 23, the column portion 23a is shaped such that, when viewed from the side perpendicular to the longitudinal direction and the opening direction of the opening 21c, the width of the portion connected to the coating surface 21d is the same as the width of the portion connected to the coating surface 21d of the comb teeth 22, and a sharp portion similar to the upper end of the comb teeth 22 is integrally provided at the upper end of the base, where the width gradually and slightly narrows from the portion connected to the coating surface 21d towards the upper end.

[0023] As shown in Figure 4, the bridge section 23b is integrally connected to the upper end portion of the base of each column section 23a. Therefore, each of the multiple bridge sections 23 is a gate-shaped structure that opens downwards. The bridge section 23b may be configured to extend continuously between a pair of column sections 23a, or it may have a short-side gap between the pair of column sections 23a.

[0024] As shown in Figures 2, 3, and 5, the multiple pairs of locking protrusions 24 are each provided projecting toward the other long side portion 21a from a pair of long sides 21a, and are spaced apart from each other. More specifically, on the inner surface 21e of one long side portion 21a facing the other long side portion 21a, multiple (nine in this embodiment) locking protrusions 24 are provided, each projecting toward the other long side portion 21a and extending in the longitudinal direction, spaced apart from each other. Similarly, on the inner surface 21e of the other long side portion 21a facing the one long side portion 21a, multiple (nine in this embodiment) locking protrusions 24 are provided, each projecting toward the one long side portion 21a and extending in the longitudinal direction, spaced apart from each other. The locking projections 24 provided on one long side 21a and the locking projections 24 provided on the other long side 21a are identical in shape, number, and position, except that they are symmetrical to each other. As shown in Figure 5, the top surfaces 24a of the multiple locking projections 24 provided on one long side 21a that face the other long side 21a and the top surfaces 24a of the multiple locking projections 24 provided on the other long side 21a that face the one long side 21a are separated by a gap between them, and these gaps are set to a size that allows the impregnated body 25, which has been elastically deformed to be compressed, to pass through. Note that in Figures 2 and 3, for convenience, only some of the locking projections 24 are labeled.

[0025] As shown in Figure 5, in this embodiment, the multiple pairs of locking protrusions 24 are each provided with a gap between them on the side of the comb teeth 22, relative to the end face 21f of the long side portion 21a that faces away from the comb teeth 22. That is, between the portion of the multiple pairs of locking protrusions 24 that is connected to the inner surface 21e and the end face 21f, there is a portion where the inner surface 21e is exposed and no locking protrusions 24 are provided. As a result, the portion of the base 21 where the locking protrusions 24 are provided has a recess 26 that is recessed toward the coating surface 21d side relative to the pair of end faces 21f.

[0026] Furthermore, as shown in Figures 2 and 3, in this embodiment, the multiple pairs of locking protrusions 24 are provided in the portion between adjacent pairs of columnar portions 23a of the long side portion 21a. That is, the inner surface 21e at the same position as the portion where the bridging portion 23 of the pair of long side portions 21a is provided does not have locking protrusions 24. On the other hand, the coating surface 21d at the same position as the portion where the locking protrusions 24 of the pair of long side portions 21a is provided does not have the bridging portion 23, but rather multiple comb teeth 22 are provided. In other words, in a plan view from the side of the coating surface 21d, the bridging portion 23 and the locking protrusions 24 are arranged so as not to overlap.

[0027] Furthermore, in this embodiment, in the multiple pairs of locking protrusions 24, the side surface 24b facing the recess 26 is an inclined surface that slopes from the end surface 21f towards the coated surface 21d as it moves from the inner surface 21e towards the top surface 24a.

[0028] The impregnated body 25 is formed in a rod shape from a material capable of impregnating liquid coatings, such as sponge or foamed polyurethane. In this embodiment, the cross-sectional shape of the impregnated body 25 perpendicular to the longitudinal direction is rectangular, but it is not limited to a rectangular cross-sectional shape as long as it is a shape that can be held by the coating portion 20. The impregnated body 25 is placed on the base 21 and held between a plurality of bridging portions 23 and a plurality of pairs of locking protrusions 24. More specifically, the impregnated body 25 is placed on the base 21 such that a pair of side surfaces 25a face or contact the inner surfaces 21e of a pair of long sides 21a and a pair of column portions 23a, the upper surface 25b faces or contacts the bridging portion 23b, and the lower surface 25c faces or contacts a pair of locking protrusions 24, and is held on the base 21 by the pair of side surfaces 25a and the upper surface 25b being locked to the plurality of bridging portions 23 and the lower surface 25c being locked to the plurality of pairs of locking protrusions 24. In this embodiment, a portion of the upper surface 25b of the impregnated body 25 is positioned between two rows of comb teeth 22, and a portion of the lower surface 25c of the impregnated body 25 is positioned between a pair of long sides 21a, i.e., in the opening 21c.

[0029] As shown in Figures 2, 3, and 6, in this embodiment, the base 21 is provided with a pair of locking walls 27 on each of its short sides 21b, facing the impregnated body 25. The locking walls 27 are wall-shaped and protrude from the short sides 21b in the same direction as the comb teeth 22, and face or abut against the longitudinal end face 25d of the impregnated body 25. As a result, the longitudinal movement of the impregnated body 25 is restricted by the pair of locking walls 27. In this embodiment, the longitudinal length of the impregnated body 25 in its natural state (when not placed on the base 21) is greater than the distance between the pair of locking walls 27, and the impregnated body 25 is positioned in a longitudinally compressed state between the pair of locking walls 27.

[0030] Furthermore, the shape and other characteristics of the locking wall 27 can be changed as appropriate, as long as it is provided on the short side portion 21b of the base 21 and faces the end face 25d of the impregnated body 25.

[0031] In the brush-type applicator 1 according to the above embodiment, the impregnating body 25 is held on the base 21 by a pair of side surfaces 25a and an upper surface 25b being locked at multiple points in the longitudinal direction by a plurality of bridging portions 23, and an upper surface 25c being locked at multiple points in the longitudinal direction by a plurality of pairs of locking protrusions 24. Therefore, with the brush-type applicator 1 according to the above embodiment, the liquid applicator contained in the container body 2 can be impregnated into the impregnating body 25, and the applicator can be applied to the object to be applied while combing the object with a plurality of comb teeth 22.

[0032] Furthermore, in the brush-type applicator 1 according to the above embodiment, as shown in Figure 7, when attaching the impregnated body 25 to the base 21, the impregnated body 25 is compressed using a tool such as a jig (not shown) to narrow the distance between the pair of side surfaces 25a. In this state, the impregnated body 25 is inserted between the multiple pairs of locking protrusions 24 and the bridging portion 23, and after insertion, the tool is removed to restore the impregnated body 25 to its original shape, thereby allowing the impregnated body 25 to be easily attached to the base 21.

[0033] In this embodiment, the side surfaces 24b of the multiple pairs of locking protrusions 24 are inclined surfaces, so that the impregnated body 25 can be guided by the side surfaces 24b and easily pushed between the multiple pairs of locking protrusions 24. Furthermore, since the surfaces of the multiple pairs of locking protrusions 24 that lock onto the impregnated body 25 are parallel to the lower surface 25c of the impregnated body 25, the impregnated body 25 is securely locked by the multiple pairs of locking protrusions 24.

[0034] Conversely, when removing the impregnated body 25 from the base 21, such as when replacing the impregnated body 25, the impregnated body 25, while attached to the base 21, is compressed using a jig or other tool (not shown) to narrow the distance between the pair of side surfaces 25a. In this state, the impregnated body 25 can be easily removed from the base 21 by pulling it out through the multiple pairs of locking protrusions 24.

[0035] As described above, the brush-type applicator 1 according to this embodiment has an applicator section 20 comprising a base 21, a plurality of bridging sections 23 provided on the base 21, and a plurality of pairs of locking protrusions 24. The plurality of pairs of locking protrusions 24 are configured to protrude from one pair of long sides 21a toward the other long side 21a and to face each other with a gap between them. This makes it easy to attach the impregnating body 25 to the base 21, i.e., the applicator section 20, by passing it between the plurality of pairs of locking protrusions 24. Furthermore, it is easy to remove the impregnating body 25 from the applicator section 20.

[0036] Furthermore, in the brush-type applicator 1 according to this embodiment, multiple pairs of locking protrusions 24 are provided with a gap between them on the side of the comb teeth 22 relative to the end face 21f of the long side portion 21a, which faces the opposite side of the comb teeth 22. Therefore, when attaching the impregnated body 25 to the base 21, after temporarily setting (placing) the impregnated body 25 in the recess 26 provided between the end face 21f and the multiple pairs of locking protrusions 24, the impregnated body 25 can be pushed and inserted into the portion between the multiple pairs of locking protrusions 24 and the bridging portion 23 using a tool such as a jig. This makes it easier to align the impregnated body 25 and makes it easier to attach the impregnated body 25 to the base 21, thus enabling more stable production of the brush-type applicator 1.

[0037] Furthermore, in the brush-type applicator 1 according to this embodiment, multiple pairs of locking protrusions 24 are provided in the portion between a pair of columnar portions 23a adjacent to each other in the longitudinal direction of the long side portion 21a. This allows the entire impregnated body 25 to be held evenly by multiple bridging portions 23 and multiple pairs of locking protrusions 24, and also reduces the cost of the brush-type applicator 1 by allowing the applicator portion 20 having the above configuration to be easily molded by injection molding of synthetic resin material.

[0038] Furthermore, in the brush-type applicator 1 according to this embodiment, a pair of locking walls 27 facing the impregnated body 25 are provided on each of the short sides 21b, so that the impregnated body 25 can be held more securely on the base 21.

[0039] As shown in Figures 8-12 and 17-19 as other embodiments, the brush-type applicator 1 can be configured such that a projection 30 is provided on the surface of the bridge-crossing portion 23 facing the impregnated body 25, and the projection 30 penetrates the impregnated body 25. In Figures 8-12 and 17-19, for convenience, only the external shape of the impregnated body 25 is shown by a dashed line.

[0040] In the brush-type applicator 1 according to other embodiments shown in Figures 8 to 11, projections 30 are integrally provided on the surface of the bridge portion 23b that constitutes the bridge portion 23 and faces the impregnated body 25. More specifically, in the brush-type applicator 1 according to other embodiments shown in Figures 8 to 11, five bridge portions 23 are provided on the applicator portion 20. Each bridge portion 23 is formed wider than that shown in Figure 1, such that the width in the direction along the longitudinal direction of the long side portion 21a of the base 21 corresponds to two comb teeth 22. Of the five bridge portions 23, the two bridge portions 23 located on one side (opposite the rod portion 11) of the center position in the longitudinal direction of the long side portion 21a have two projections 30 on the surface of the bridge portion 23b that faces the impregnated body 25, which are biased to that one side and spaced apart from each other in a direction perpendicular to the longitudinal direction. Furthermore, of the five bridging sections 23, the two bridging sections 23 located on the other side (the side of the rod section 11) relative to the longitudinal center of the long side section 21a also have two protrusions 30 on the surface of the bridge section 23b facing the impregnated body 25, which are offset to the other side and spaced apart from each other in a direction perpendicular to the longitudinal direction. The number of protrusions 30 provided on each bridge section 23b is not limited to two; it may be one or three or more. Note that of the five bridging sections 23, the bridging section 23 located in the longitudinal center of the long side section 21a does not have a protrusion 30, but a protrusion 30 may also be provided on the bridging section 23 located in the longitudinal center of the long side section 21a.

[0041] Each projection 30 has a tapered shape (pyramidal shape) that gradually narrows from the base connected to the bridge portion 23b to the tip, allowing it to easily penetrate the impregnated body 25.

[0042] As described above, in the brush-type applicator 1 according to other embodiments shown in Figures 8 to 11, a projection 30 is provided on the surface of the bridge portion 23 facing the impregnated body 25, and the projection 30 is configured to pierce the impregnated body 25. This allows the impregnated body 25 to be supported by the bridge portion 23 via the projection 30, thereby suppressing longitudinal movement of the impregnated body 25 relative to the base 21. This prevents the problem that when the applicator portion 20 is repeatedly inserted into and removed from the applicator container 3, the impregnated body 25 may come into contact with the scraping portion 2b and shift longitudinally relative to the base 21, making it impossible for the impregnated body 25 to evenly hold the liquid contents. Furthermore, in the configuration where multiple projections 30 are provided on each bridge portion 23b, as in this embodiment, deformation that causes the impregnated body 25 to rotate around the projection 30 can also be suppressed.

[0043] In the brush-type applicator 1 according to other embodiments shown in Figures 8 to 11, the projections 30 provided on the bridge portion 23b of the two bridging portions 23 located on one side (opposite to the rod portion 11) of the longitudinal center position of the long side portion 21a, that is, the projections 30 located on the side of one short side portion 21b relative to the longitudinal center position of the long side portion 21a, each extend inclined toward the side of that short side portion 21b. More specifically, the projections 30 located on the side of one short side portion 21b relative to the longitudinal center position of the long side portion 21a have an axis inclined toward the side of one short side portion 21b (outside the longitudinal direction of the portion that accommodates the impregnated body 25) such that the center position of the tip portion is located on the side of one short side portion 21b rather than the center position of the base portion. Furthermore, the projections 30 provided on the bridge portions 23b of the two bridging portions 23 located on the other side (the side of the rod portion 11) relative to the longitudinal center of the long side portion 21a, that is, the projections 30 located on the other short side portion 21b relative to the longitudinal center of the long side portion 21a, each extend inclined toward the other short side portion 21b. More specifically, the projections 30 located on the other short side portion 21b relative to the longitudinal center of the long side portion 21a have an axis inclined toward the other short side portion 21b (the longitudinal outer side of the portion that accommodates the impregnated body 25) such that the center of the tip portion is located toward the other short side portion 21b than the center of the base portion.

[0044] As described above, in the brush-type applicator 1 according to other embodiments shown in Figures 8 to 11, the projections 30 on one of the short sides 21b relative to the longitudinal center of the long side 21a are configured to extend at an angle toward the said short side 21b, and the projections 30 on the other short side 21b relative to the longitudinal center of the long side 21a are configured to extend at an angle toward the said short side 21b. This ensures that both longitudinal ends of the impregnated body 25 are reliably supported by the projections 30, thereby suppressing deformation or movement that would cause the impregnated body 25 to shrink in the longitudinal direction. This makes it possible to more effectively suppress the impregnated body 25 from shifting longitudinally relative to the base 21, such as by contacting the scraping part 2b, when the applicator 20 is repeatedly inserted into and removed from the applicator container 3.

[0045] Furthermore, in the brush-type applicator 1 shown in Figures 8 to 11, the impregnating body 25 is rod-shaped with a cross section perpendicular to the longitudinal direction that has a side length greater than the distance between the bridge portion 23b of the bridge portion 23 and the locking projection 24, and is positioned between the bridge portion 23b of the bridge portion 23 and the locking projection 24 in a slightly compressed state. With this configuration, the projection 30 provided on the surface of the bridge portion 23 facing the impregnating body 25 can be easily and reliably penetrated by the impregnating body 25. This makes it possible to more effectively suppress the impregnating body 25 from shifting longitudinally relative to the base 21 due to contact with the scraping portion 2b when the applicator 20 is repeatedly inserted into and removed from the applicator container 3.

[0046] As shown in Figure 12 as an example of modification, the projections 30 may be configured such that the tip of each projection located on one short side 21b (opposite side of the rod portion 11) relative to the longitudinal center of the long side 21a is bent toward the short side 21b, and the tip of each projection located on the other short side 21b (side of the rod portion 11) relative to the longitudinal center of the long side 21a is bent toward the other short side 21b. These projections 30 are bent inside the impregnated body 25.

[0047] In the brush-type applicator 1 shown in Figure 12, one projection 30 is provided at the center of the surface of the bridge portion 23b of each of the five bridge portions 23 that faces the impregnated body 25. More specifically, of the five bridge portions 23, the three bridge portions 23 located at the center of the longitudinal direction of the long side portion 21a and on one side of that center (opposite to the rod portion 11) each have one projection 30 on the surface of the bridge portion 23b that faces the impregnated body 25, offset to that side and located at the center in a direction perpendicular to the longitudinal direction. In addition, of the five bridge portions 23, the two bridge portions 23 located on the other side (the side of the rod portion 11) of the long side portion 21a each have one projection 30 on the surface of the bridge portion 23b that faces the impregnated body 25, offset to that other side and located at the center in a direction perpendicular to the longitudinal direction. The number of projections 30 provided on each bridge section 23b is not limited to one; there may be multiple projections. Furthermore, the bridge section 23 located at the center of the longitudinal direction of the long side section 21a may be configured without projections 30. Note that the projections 30 shown in Figure 12 are generally thinner than the projections 30 shown in Figure 8.

[0048] Furthermore, the three projections 30 provided on the bridge portion 23b of the three bridging portions 23 located on the longitudinal center of the long side portion 21a and on one side of the long side portion 21a (opposite to the rod portion 11), that is, the three projections 30 located on one side of the short side portion 21b relative to the longitudinal center of the long side portion 21a, each have their tips bent toward the short side portion 21b. Also, the two projections 30 provided on the bridge portion 23b of the two bridging portions 23 located on the other side of the long side portion 21a (the side of the rod portion 11), that is, the two projections 30 located on the other side of the short side portion 21b relative to the longitudinal center of the long side portion 21a, each have their tips bent toward the other short side portion 21b. All five projections 30 are bent at approximately a right angle at approximately the midpoint between their base and tip portions.

[0049] As described above, in the brush-type applicator 1 shown in Figure 12, the projection 30 on one of the short sides 21b relative to the longitudinal center of the long side 21a is configured such that the tip of each projection 30 is bent toward the short side 21b, and the projection 30 on the other short side 21b relative to the longitudinal center of the long side 21a is configured such that the tip of each projection 30 is bent toward the other short side 21b. This configuration suppresses the longitudinal movement of the impregnated material 25 relative to the base 21 by the projection 30, while the bent tip makes it difficult for the projection 30 to come off the impregnated material 25, thereby increasing the holding force of the impregnated material 25 by the projection 30. As a result, when the applicator 20 is repeatedly inserted into and removed from the applicator container 3, it is possible to more effectively suppress the impregnated material 25 from shifting longitudinally relative to the base 21 due to contact with the scraping part 2b, etc.

[0050] The bent projection 30 shown in Figure 12 can be formed by following the procedure below.

[0051] First, as shown in Figures 13, 14, and 15, in the injection molding of the synthetic resin material, projection bases 31 are formed on all five bridge portions 23b of the bridge portions 23b, each having a straight, non-bending shape (pyramidal shape). More specifically, each projection base 31 has a tapered shape, gradually becoming narrower from the base connected to the bridge portion 23b to the tip, with the base being even wider. Furthermore, projection bases 31 located on one of the short sides 21b relative to the longitudinal center of the long side portion 21a are shaped to extend inclined toward that short side portion 21b, and projection bases 31 located on the other short side 21b relative to the longitudinal center of the long side portion 21a are shaped to extend inclined toward that other short side portion 21b.

[0052] Next, as shown in Figure 16, the impregnated body 25 is inserted between the pairs of locking protrusions 24 and the bridging portion 23 using a jig 32 equipped with a long protrusion 32a that can be inserted between the pairs of locking protrusions 24. At this time, the tip of the protrusion base 31 is pressed with the tip of the protrusion base 31 of the jig 32, and the tip portion of the protrusion base 31 is bent, thereby forming a protrusion 30 with a bent tip portion. Furthermore, the projection base 31 located on one of the short sides 21b relative to the longitudinal center of the long side 21a is shaped to extend inclined toward that short side 21b, and the projection base 31 located on the other short side 21b relative to the longitudinal center of the long side 21a is shaped to extend inclined toward that other short side 21b. As a result, when the projection base 31 is pressed using the jig 32, the tip portion of the projection base 31 can be bent in the desired direction. In this way, when inserting the impregnated body 25 into the space between the multiple pairs of locking projections 24 and the bridging portion 23, the projection base 31 can be pressed using the jig 32 used for insertion, making it easy to form bent projections 30 inside the impregnated body 25.

[0053] The projections 30 can be provided on the surface of the bridge section 23 facing the impregnated body 25, and their position, number, shape, etc., can be changed as appropriate. For example, as shown in Figures 17, 18, and 19 as other modifications, the projections 30 may be provided on the surface of the column section 23a of the bridge section 23 facing the impregnated body 25.

[0054] In the cases shown in Figures 17, 18, and 19, wedge-shaped projections 30 are integrally provided on the faces of the pair of column portions 23a of the bridging portion 23 that face the impregnated body 25, extending from the bridge portion 23b side toward the base 21 side. These pairs of projections 30 may extend to the long side portion 21a of the base 21. A total of four projections 30 are provided on the pair of column portions 23a of the two bridging portions 23 located on one side (opposite the rod portion 11) of the longitudinal center of the long side portion 21a, that is, the four projections 30 located on the side of one short side portion 21b relative to the longitudinal center of the long side portion 21a, each extending inclined toward that short side portion 21b. Furthermore, the two protrusions 30 provided on the pair of column portions 23a of the bridge portion 23 located at the longitudinal center of the long side portion 21a also extend inclined toward the side of the short side portion 21b. In addition, the total of four protrusions 30 provided on the pair of column portions 23a of the two bridge portions 23 located on the other side (the side of the rod portion 11) relative to the longitudinal center of the long side portion 21a, that is, the four protrusions 30 located on the other short side portion 21b side relative to the longitudinal center of the long side portion 21a, each extend inclined toward the side of the other short side portion 21b.

[0055] Thus, even in a configuration where the protrusions 30 are provided on the surface of the column portion 23a of the bridge portion 23 facing the impregnated body 25, each protrusion 30 pierces the side surface of the impregnated body 25, thereby supporting the impregnated body 25 on the bridge portion 23. This suppresses the longitudinal movement of the impregnated body 25 relative to the base 21, thereby preventing the problem that when the coating portion 20 is repeatedly inserted into and removed from the coating container 3, the impregnated body 25 may come into contact with the scraping portion 2b and shift longitudinally relative to the base 21, making it impossible for the impregnated body 25 to evenly hold the contents.

[0056] Furthermore, even in a configuration where the projections 30 are provided on the surface of the column portion 23a of the bridge portion 23 facing the impregnated body 25, by configuring the projection 30 on one short side portion 21b with respect to the longitudinal center position of the long side portion 21a to extend inclined toward that short side portion 21b, and the projection 30 on the other short side portion 21b with respect to the longitudinal center position of the long side portion 21a to extend inclined toward that other short side portion 21b, the projections 30 can reliably support both ends of the impregnated body 25 in the longitudinal direction, thereby suppressing deformation or movement that would cause the impregnated body 25 to shrink in the longitudinal direction. This makes it possible to more effectively suppress the impregnated body 25 from shifting longitudinally relative to the base 21, for example, by contacting the scraping portion 2b, when the coating portion 20 is repeatedly inserted into and removed from the coating container 3.

[0057] The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention.

[0058] For example, in the above embodiment, the shape and number of the base 21, the multiple comb teeth 22, the multiple bridging portions 23, the multiple pairs of locking protrusions 24, and the impregnated body 25 are not limited to the specific shapes described above and can be changed as appropriate.

[0059] Furthermore, the projection 30 may be provided on both the column portion 23a and the bridge portion 23b, as long as it is provided on the surface of the bridge portion 23 facing the impregnated body 25.

[0060] Furthermore, as shown in Figures 8 to 12 and 17 to 19, the short side portion 21b opposite to the rod portion 11 may be provided with comb teeth 22 instead of the locking wall 27. [Explanation of Symbols]

[0061] 1. Brush-type applicator 2. Container body 2a Mouth 2b Grinding part 3. Application container 10 Gripping part 11 Rod section 20 Coating area 21 base 21a Long side 21b Short side 21c aperture 21d coated surface 21e Inside surface 21f end face 22 comb teeth 23 Bridge section 23a Pillar 23b Bridge 24 Locking protrusion 24a Top surface 24b side 25 Impregnated body 25a side 25b Top surface 25c Bottom 25d end face 26 recesses 27 Locking wall 30 protrusions 31 Protrusion source 32 Jigs 32a Convex part

Claims

1. A brush-type applicator having a gripping section and an applicating section equipped with multiple comb teeth and an impregnating body, The coating portion is A long frame-shaped base comprising a pair of long sides and a pair of short sides, wherein a plurality of the comb teeth are arranged along the longitudinal direction on each of the pair of long sides, Each of the following bridge sections comprises a pair of columnar sections provided between the comb teeth adjacent to each other in the longitudinal direction of the pair of long sides, and a bridge section connecting one of the columnar sections to the other, Each of the pair of aforementioned long sides is provided with a plurality of pairs of locking protrusions that project toward the other aforementioned long side and are spaced apart from each other and facing each other, A brush-type applicator characterized by having an impregnating body arranged on the base and held between a plurality of bridging portions and a plurality of pairs of locking protrusions.

2. The brush-type applicator according to claim 1, wherein a gap is provided between the end face of the long side portion facing away from the comb teeth and the plurality of pairs of locking projections.

3. The brush-type applicator according to claim 1 or 2, wherein multiple pairs of the locking protrusions are provided in the portion between adjacent pairs of the column portions of the long side.

4. The brush-type applicator according to claim 1 or 2, wherein a pair of the short sides are each provided with a locking wall facing the impregnated body.

5. The brush-type applicator according to claim 1 or 2, wherein a projection is provided on the surface of the bridging portion facing the impregnated body, and the projection pierces the impregnated body.

6. Each of the surfaces of the multiple bridging portions facing the impregnated body is provided with the projections, The projections located on one of the shorter sides with respect to the longitudinal center of the longer side extend inclined toward that shorter side, The brush-type applicator according to claim 5, wherein the projections on the other short side with respect to the longitudinal center of the long side extend inclined toward the other short side.

7. Each of the bridge portions of the multiple bridge sections is provided with the projection, The projections located on one of the shorter sides relative to the longitudinal center of the longer side are each bent at their tip toward the shorter side. The brush-type applicator according to claim 5, wherein the projections located on the other short side with respect to the longitudinal center of the long side are each bent at their tip toward the other short side.

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