Coating container

Abstract

The present invention addresses the problem of providing a coating container capable of ascertaining the remaining amount of a drawing material and hygienically ensuring airtightness. A coating container according to one embodiment is provided with: a front tube; an outer cylindrical member; an inner cylindrical member fixed to the outer cylindrical member; and a push rod for pressing the drawing material by advancing inside the inner cylindrical member, thereby causing the drawing material to appear from the opening of the front cylinder. The outer cylindrical member has a through hole formed in a side surface of the outer cylindrical member. At least a portion of the inner cylindrical member exposed from the through hole is provided as a transparent portion, and the inside of the inner cylindrical member is visible through the transparent portion. The push rod is provided with a visual recognition part which can be visually recognized from the outer side of the inner cylindrical part through the transparent part. The remaining amount of the drawing material can be grasped by visually recognizing the state of the visual recognition part which can be visually recognized through the transparent part.

Description

Technical Field

[0001] The present invention relates to a coating container for coating a drawing member. Background Art

[0002] Patent document 1 describes a delivery container having a shell for delivering solid contents. The shell has a cylindrical shell body extending along an axis and a cylindrical nozzle body mounted on the upper part of the shell body. A bottom cover body is mounted at the lower end of the shell body to close the lower end opening of the shell body.

[0003] A shaft body extending in a straight line along the axis is arranged inside the housing. The shaft body has a holding portion for holding solid contents at the upper end. When the shaft body moves upward relative to the housing, the solid contents held at the lower end side by the holding portion move upward together with the shaft body and are delivered to the outside from the delivery port formed at the upper end of the nozzle body.

[0004] The delivery container has a remaining amount confirmation window extending in the up-down direction on the main body of the shell and a remaining amount display portion through which the shaft body can be visually identified from the outside through the window. The window portion is a slit-shaped hole that penetrates the inside and outside of the shell. The size of the window portion in the up-down direction corresponds to the movable distance of the shaft body inside the shell upward. The remaining amount display portion is in the shape of a cylinder that expands from the lower end of the shaft body and extends downward from the shaft body. The bottom cover body has a cylindrical inner wall extending upward from the bottom cover body, and the inner wall is located on the inner side of the remaining amount display portion.

[0005] When the solid content is new and the shaft is located at the initial position as the lower stroke end position, the lower end of the remaining amount display portion is located slightly below the lower end of the window portion, and the window portion is in a state where the entire portion is closed by the remaining amount display portion. Since the entire window portion is closed by the remaining amount display portion, the user can confirm that the solid content is new.

[0006] On the other hand, when the shaft moves upward relative to the main body of the housing as the solid content is delivered, the remaining amount display portion moves upward relative to the shaft body, thereby the inner wall located inside the remaining amount display portion becomes visible. The user can confirm the remaining amount of the solid content by visually recognizing the length of the remaining amount display portion exposed in the window and the length of the inner wall.

[0007] Furthermore, when the shaft moves to the upper stroke end position and the solid content that can be delivered is exhausted, the lower end of the remaining amount display part moves to the upper part of the window part, and only the inner wall is exposed in the window part. At this time, only the inner wall can be visually identified from the window part, thereby the user can confirm that the solid content has been exhausted.

[0008] (Prior art literature)

[0009] (Patent Document)

[0010] Patent Document 1: Japanese Patent Application Publication No. 2022-27171 Summary of the invention

[0011] (Problems to be solved by the invention)

[0012] In the aforementioned delivery container, the window portion is provided as a slit-shaped hole penetrating the inside and outside of the shell, and a movable remaining amount display portion is arranged inside the hole. Furthermore, an inner wall is arranged inside the movable remaining amount display portion. Therefore, since the remaining amount display portion located between the window portion and the inner wall moves, foreign matter such as dust may enter between the edge of the window portion and the remaining amount display portion, and between the remaining amount display portion and the inner wall as the remaining amount display portion moves. Therefore, since dust and the like may accumulate inside the window portion, there is room for improvement in terms of hygiene.

[0013] However, in the coating container, a highly volatile drawing material is sometimes used. However, as in the above-mentioned delivery container, when the remaining amount display part located inside the window part penetrating the inside and outside moves, it may be impossible to maintain the airtightness inside. Therefore, it is required to ensure the airtightness.

[0014] An object of the present invention is to provide a coating container which can detect the remaining amount of a drawing material and can ensure airtightness in a hygienic manner.

[0015] (Measures taken to solve the problem)

[0016] (1) The coating container involved in the present invention comprises: a front tube that accommodates a drawing piece and has an opening for making the drawing piece appear at the front end; an outer cylindrical member that is connected to the side of the front tube opposite to the opening; an inner cylindrical member that is fixed to the outer cylindrical member inside the outer cylindrical member; and a push rod that can rotate synchronously with the inner cylindrical member inside the inner cylindrical member and press the drawing piece by moving forward relative to the inner cylindrical member, so that the drawing piece appears from the opening. The outer cylindrical member has a through hole formed on the side of the outer cylindrical member. At least the portion of the inner cylindrical member exposed from the through hole is set as a transparent portion, and the interior of the inner cylindrical member can be visually identified through the transparent portion. The push rod has a visual identification portion that can be visually identified from the outside of the inner cylindrical member through the transparent portion. By visually identifying the state of the visual identification portion that can be visually identified through the transparent portion, the remaining amount of the drawing piece can be grasped.

[0017] The coating container can grasp the remaining amount of the depiction member by observing the visual identification portion of the push rod that can be visually identified via the transparent portion. In the coating container, the inner cylindrical member with the transparent portion is fixed to the outer cylindrical member, and the inner cylindrical member does not move relative to the outer cylindrical member. Therefore, by not moving the inner cylindrical member between the through hole of the outer cylindrical member and the push rod, the possibility of foreign matter entering the inner side of the through hole can be reduced, so it can be used as a hygienic coating container. And, by fixing the inner cylindrical member to the outer cylindrical member on the inner side of the through hole, the airtightness of the inner side of the through hole can be ensured.

[0018] (2) In the above (1), the coating container may include a cylindrical internal threaded component, which can rotate synchronously with the front tube inside the front tube and has an internal thread inside. The push rod may have an external thread that is screwed with the internal thread. The outer cylindrical component can rotate relative to the front tube. Through the relative rotation of the outer cylindrical component with respect to the front tube, the screwing action of the external thread and the internal thread takes effect, whereby the push rod can move forward relative to the internal thread component. In this case, the push rod can be moved forward by the relative rotation of the outer cylindrical component with respect to the front tube, and the drawing member can appear from the opening through the push rod.

[0019] (3) In the above (1) or (2), the inner cylindrical member may have a printing portion, and when viewed from the transparent portion, the printing portion is located on the side opposite to the through hole. The remaining amount of the drawing member can also be grasped by visually recognizing the printing portion. In this case, the user of the coating container can more directly grasp the remaining amount of the drawing member by visually recognizing the printing portion. Therefore, the remaining amount of the drawing member can be more easily understood.

[0020] (4) In the above (3), the inner cylindrical member may have an outer surface opposite to the outer cylindrical member and an inner surface opposite to the push rod. The transparent portion may have a first surface exposed from the through hole and a second surface facing the side opposite to the first surface. The second surface may have a convex portion, which protrudes toward the inner side of the inner cylindrical member relative to an imaginary extension surface extending along the inner surface. In this case, the transparent portion is lens-shaped by the second surface of the transparent portion protruding inwardly. Therefore, when the aforementioned printing portion is visually identified through the transparent portion, since the printing portion is enlarged and visible, the remaining amount of the drawing member can be displayed more easily.

[0021] (5) In the above (2), the coating container may be provided with a ratchet mechanism, which allows the outer cylindrical member to rotate relative to the front tube in one direction, and restricts the outer cylindrical member from rotating relative to the front tube in a direction opposite to the one direction. The transparent portion can visually identify the push rod that is only moving forward by the outer cylindrical member rotating relative to the front tube in one direction. In this case, since the push rod does not move backward, the remaining amount of the depiction member based on the visual recognition portion of the push rod can be displayed more accurately. Therefore, the remaining amount of the depiction member can be more appropriately grasped.

[0022] (Effects of the Invention)

[0023] According to the present invention, the remaining amount of the drawing material can be grasped and airtightness can be ensured hygienically. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 (a) is a side view showing the coating container according to the embodiment.

[0025] Figure 1 (b) is along Figure 1 (a) is a cross-sectional view taken along line AA.

[0026] Figure 2 is along Figure 1 (a) is a cross-sectional view taken along line BB.

[0027] Figure 3 (a) is a side view showing the inner cylindrical member of the coating container according to the embodiment.

[0028] Figure 3 (b) is from Figure 3 (a) Observation from different directions Figure 3 (a) is a side view of the inner cylindrical part.

[0029] Figure 4 is along Figure 3 (a) is a cross-sectional view taken along line CC.

[0030] Figure 5 (a) is a side view showing a plunger of the coating container according to the embodiment.

[0031] Figure 5 (b) is along Figure 5 (a) is a cross-sectional view taken along line DD.

[0032] Figure 6 (a) is a side view showing the internal thread member of the coating container according to the embodiment.

[0033] Figure 6 (b) means from Figure 6(a) Side view of the internal threaded component viewed from different directions.

[0034] Figure 7 is along Figure 6 (b) Cross-sectional view taken along line EE.

[0035] Figure 8 (a) means Figure 1 (a) is a side view of the coating container in a state where the cap of the coating container is removed and the drawing material is used up.

[0036] Figure 8 (b) is along Figure 8 (a) is a cross-sectional view taken along line FF.

[0037] Fig. 9 (a) is along Figure 8 (a) is a cross-sectional view taken along line GG.

[0038] Fig. 9 (b) is a cross-sectional view showing a coating container according to a modified example.

[0039] Fig.10 (a) Fig.10 (b) Fig.10 (c) and Fig.10 (d) is a diagram showing an example of a through hole, a transparent portion, or a visual confirmation portion of the coating container according to the embodiment.

[0040] (Explanation of Reference Numerals)

[0041] 1: coating container; 2: front tube; 2A: front tube; 2b: opening; 2B: rear tube;

[0042] 2C: flange; 2c: conical surface; 2d: convex part; 2f: internal space; 2g: annular concave part;

[0043] 2h: first annular convex portion; 2j: second annular convex portion; 2p: opening; 2q: inner surface;

[0044] 3: lid; 3A: outer cover; 3b: recess; 3B: inner cover; 3c: end face;

[0045] 4: outer cylindrical part; 4b: inner surface; 4c: side surface; 4d: through hole; 4f: long axis;

[0046] 4g: short axis; 4h: straight part; 4j: curved part; 4k: rear end; 4p: protrusion;

[0047] 4q: annular concave portion; 4r: opening; 4s: annular convex portion; 4t: front end; 5: piston;

[0048] 5b: first recess; 5c: second recess; 6: push rod; 6b: external thread; 6c: engaging portion;

[0049] 6d: visual recognition part; 6f: protrusion; 6g: rear end; 6h: enlarged diameter part; 6j: front end;

[0050] 6k: pressing part; 6p: first part; 6q: second part; 7, 7A: inner cylindrical part;

[0051] 7b: transparent part; 7c: concave part; 7d: outer surface; 7f: inner surface; 7g: protrusion;

[0052] 7h: flat surface; 7j: widened portion; 7k: one end; 7p: straight portion; 7q: other end;

[0053] 7r: convex part; 7s: printed part; 7t: exposed part; 7v: transparent part; 7w: outer surface;

[0054] 7y: 1st surface; 7z: 2nd surface; 7z1: convex portion; 8: internal thread component; 8b: internal thread;

[0055] 8c: end; 8d: front side cylinder; 8f: rear side cylinder; 8g: spring part; 8h: outer surface;

[0056] 8j: convex part; 8k: 1st convex part; 8p: 2nd convex part; 8q: cylindrical part; 8r: slit;

[0057] 8s: outer surface; 8t: convex portion; 8v: protrusion; 8w: inclined surface; 8x: abutment surface; 9: ratchet mechanism;

[0058] 17s: printing part; 17s1: first printing part; 17s2: second printing part; D1: axis direction;

[0059] D2: circumferential direction; L: axis; M: depiction piece; S: extended surface. DETAILED DESCRIPTION

[0060] Hereinafter, the embodiment of the coating container involved in the present invention will be described with reference to the accompanying drawings. In the description of the accompanying drawings, the same or equivalent elements are marked with the same symbols, and repeated descriptions are appropriately omitted. In the accompanying drawings, in order to facilitate understanding, a part is sometimes simplified or exaggerated for depiction, and the dimensional ratios, etc. are not limited to those described in the accompanying drawings.

[0061] Figure 1 (a) is a side view showing the coating container according to the present embodiment. Figure 1 (b) is along Figure 1 (a) is a cross-sectional view taken along line AA. Figure 1 (a) and Figure 1As shown in (b), the coating container 1 according to the present embodiment is, for example, a pencil that delivers (extrudes) the drawing material M contained in the coating container 1 by the operation of the user.

[0062] In this embodiment, the depicting member M is a cosmetic. For example, the "cosmetic" is a lipstick, a lip gloss, a lip liner, a lip gloss, an eyeliner, an eyebrow pencil, an eye shadow, a concealer, or a beauty stick. The "cosmetic" can be a stick-shaped object containing a soft material (for example, a semi-solid, a soft solid, a jelly, a mousse, or a paste containing them). For example, the depicting member M is volatile. As an example, the depicting member M is a stick-shaped cosmetic.

[0063] The coating container 1 includes a front tube 2 for accommodating a drawing member M, a cover 3 covering the front tube 2, and an outer cylindrical member 4 located on the opposite side of the cover 3 of the front tube 2. In the coating container 1, a part of the components including the front tube 2, the cover 3, and the outer cylindrical member 4 are set to be cylindrical. In the coating container 1, the directions in which the axes L of the cylindrical components extend are consistent in the state in which the components are assembled. Hereinafter, the direction in which the axis L extends is set as the axis direction D1. For example, the axis direction D1 is consistent with the length direction of the coating container 1.

[0064] "Front", "front side" and "front" indicate the direction from the outer cylindrical member 4 toward the front cylinder 2 in the axial direction D1, "rear", "rear side" and "rear" indicate the direction from the front cylinder 2 toward the outer cylindrical member 4 in the axial direction D1. "Radial" indicates the direction orthogonal to the axis L, and "circumferential" indicates the direction (rotational direction) along a ring centered on the axis L. In the present embodiment, the extrusion direction of the drawing member M is the front (advancing direction), and the opposite direction is the rear.

[0065] The front tube 2 has an opening 2b at the front end (the front end of the front tube 2) for allowing the drawing member M to appear. The front tube 2 includes: a front tube portion 2A, which is exposed when the cover 3 is removed; a rear tube portion 2B, which is inserted into the inner side of the outer cylindrical member 4; and a flange portion 2C, which exists between the front tube portion 2A and the rear tube portion 2B. The front tube portion 2A has: an opening 2b, which is located at one end of the axial direction D1; and a tapered surface 2c, which is inclined in a manner that the diameter of the front tube 2 increases as it moves away from the opening 2b.

[0066] The opening 2b is a portion where the drawing member M in the front tube 2 is exposed, and the drawing member M protrudes from the opening 2b for use. The tapered surface 2c extends from the opening 2b to a position that passes over the center of the axial direction D1 of the front tube 2, for example. The front tube portion 2A has a convex portion 2d located on the rear side of the tapered surface 2c. The convex portion 2d engages with a concave portion 3b of the cover 3 described later. The cover 3 is mounted on the front tube 2 in a state where the end surface 3c defining the opening of the cover 3 is opposed to the flange portion 2C along the axial direction D1. The flange portion 2C is exposed when the cover 3 is mounted on the front tube 2.

[0067] The internal space 2f of the front tube 2 extends rearward from the opening 2b. The internal space 2f penetrates the front tube 2 in the axial direction D1. The internal space 2f accommodates the drawing member M, the piston 5, and the push rod 6. The piston 5 has, for example, a first recessed portion 5b recessed at the front end and a second recessed portion 5c recessed at the rear end. The drawing member M, the piston 5, and the push rod 6 are arranged in this order.

[0068] The rear side cylinder part 2B has: an annular recessed part 2g, which is located at the rear side of the flange part 2C; a first annular protrusion 2h, which is located further back than the annular recessed part 2g; and a second annular protrusion 2j, which is located back of the first annular protrusion 2h. The first annular protrusion 2h is engaged with the inner surface 4b of the outer cylindrical member 4 in the axial direction D1. Thus, the front cylinder 2 is connected to the outer cylindrical member 4 in a manner that it cannot move in the axial direction but can rotate relatively.

[0069] The cover 3 includes a bottomed cylindrical outer cover 3A and a stepped cylindrical inner cover 3B held at the bottom of the outer cover 3A. For example, the outer cover 3A is made of PP (polypropylene) and the inner cover 3B is made of TPEE (polyester thermoplastic elastomer). However, the material of the outer cover 3A and the material of the inner cover 3B are not limited to the above examples.

[0070] For example, the outer tubular member 4 is in the shape of a bottomed tube (for example, a bottomed cylindrical shape). The outer tubular member 4 is connected to the side of the front tube 2 opposite to the opening 2b. The outer tubular member 4 has a side surface 4c facing a direction intersecting the axial direction D1. The outer tubular member 4 has a through hole 4d formed in the side surface 4c. For example, the through hole 4d extends from the center of the axial direction D1 of the outer tubular member 4 to the end (rear end) of the axial direction D1 of the outer tubular member 4.

[0071] The through hole 4d connects the inside and outside of the outer cylindrical member 4. That is, the through hole 4d penetrates the outer cylindrical member 4 in the radial direction. For example, the through hole 4d has a major axis 4f extending along the axial direction D1 and a minor axis 4g extending along the circumferential direction D2 of the outer cylindrical member 4. As an example, the through hole 4d has a rounded rectangular shape.

[0072] The through hole 4d is defined by, for example, a straight portion 4h extending along the axial direction D1 and a pair of curved portions 4j curved at both ends of the straight portion 4h so that the through hole 4d expands outward. In this case, the through hole 4d is defined by a pair of straight portions 4h arranged along the circumferential direction D2 and a pair of curved portions 4j arranged along the axial direction D1.

[0073] The outer cylindrical member 4 has an opening 4r for a part of the front cylinder 2 (the rear cylinder 2B) to enter. The outer cylindrical member 4 has an annular recess 4q recessed toward the radially outer side of the outer cylindrical member 4 and an annular projection 4s located in front of the annular recess 4q on the inner surface 4b of the outer cylindrical member 4. The first annular projection 2h of the front cylinder 2 engages with the annular recess 4q in the axial direction D1.

[0074] The coating container 1 includes an inner cylindrical member 7 fixed to the outer cylindrical member 4 inside the outer cylindrical member 4. The outer cylindrical member 4 includes a protrusion 4p protruding radially inward of the outer cylindrical member 4 on the inner surface 4b of the outer cylindrical member 4. The inner cylindrical member 7 engages with the protrusion 4p in the circumferential direction. Thus, the inner cylindrical member 7 engages with the outer cylindrical member 4 in a manner that allows synchronous rotation.

[0075] The push rod 6 can rotate synchronously with the inner cylindrical member 7 inside the inner cylindrical member 7. The push rod 6 moves forward relative to the inner cylindrical member 7 to press the drawing member M, thereby making the drawing member M appear from the opening 2b of the front tube 2. The push rod 6 has an external thread 6b formed on the outer periphery of the push rod 6 and an engaging portion 6c engaged with the inner cylindrical member 7 in the circumferential direction D2. The external thread 6b and the engaging portion 6c are arranged along the axial direction D1. The external thread 6b is located in front of the engaging portion 6c.

[0076] The coating container 1 has a cylindrical internal thread component 8. The internal thread component 8 is arranged inside the front tube 2. More specifically, the internal thread component 8 is accommodated inside the rear tube portion 2B of the front tube 2. For example, the end 8c of the internal thread component 8 in the axial direction D1 protrudes from the opening 2p formed at one end of the axial direction D1 of the front tube 2. The internal thread component 8 can rotate synchronously with the front tube 2. The internal thread component 8 has an internal thread 8b inside. The external thread 6b of the push rod 6 is screwed with the internal thread 8b. The push rod 6 and the internal thread component 8 will be described in detail later.

[0077] Figure 2 is along Figure 1 (a) is a cross-sectional view taken along line BB. Figure 1 (a) Figure 1 (b) and Figure 2 As shown, the push rod 6 is accommodated in the inner cylindrical member 7, and the inner cylindrical member 7 is accommodated in the outer cylindrical member 4. A part of the inner cylindrical member 7 is exposed from the through hole 4d of the outer cylindrical member 4.

[0078] The inner cylindrical member 7 has a transparent portion 7b. "Transparent portion" means a transparent part or component, and "transparent" means that the average transmittance in visible light is above a constant value. The above-mentioned "constant value" is, for example, 60%, 80% or 90%. "Transparent" can be colorless, transparent, colored, or translucent. In this embodiment, the interior of the inner cylindrical member 7 can be visually identified through the transparent portion 7b.

[0079] For example, the inner cylindrical component 7 is made of PET (polyethylene terephthalate). In the present embodiment, the inner cylindrical component 7 is made of a transparent assembly. That is, the inner cylindrical component 7 is a transparent component. In this case, the transparent portion 7b is the inner cylindrical component 7 as a whole. However, the transparent portion 7b may also be arranged on a part of the inner cylindrical component 7. The portion of the inner cylindrical component 7 that is at least exposed from the through hole 4d is set as the transparent portion 7b. Therefore, the inside of the inner cylindrical component 7 can be visually recognized via the transparent portion 7b.

[0080] For example, the outer cylindrical member 4 has a plurality of protrusions 4p, and the inner cylindrical member 7 has a recessed portion 7c that is recessed radially inward of the inner cylindrical member 7. The plurality of protrusions 4p are arranged along the circumferential direction D2. The inner cylindrical member 7 has a plurality of recessed portions 7c, and the plurality of recessed portions 7c are arranged along the circumferential direction D2. At least any one of the plurality of protrusions 4p enters the recessed portion 7c.

[0081] exist Figure 2 In the example of , two of the three protrusions 4p enter the recess 7c. Thus, the outer tubular member 4 is fixed to the inner tubular member 7. In order to ensure the airtightness of the inside of the coating container 1, an airtight protrusion may be provided on either the inner surface 4b of the outer tubular member 4 or the outer surface 7d of the inner tubular member 7.

[0082] The push rod 6 has a visual recognition portion 6d that can be visually recognized from the outside of the inner cylindrical member 7 via the transparent portion 7b. The visual recognition portion 6d represents a portion of the push rod 6 that is visually recognized from the outside of the inner cylindrical member 7 via the transparent portion 7b. For example, the visual recognition portion 6d includes a portion (rear portion) of the external thread 6b and an engaging portion 6c that engages with the inner cylindrical member 7.

[0083] The engaging portion 6c has a plurality of protrusions 6f protruding radially outward from the push rod 6. The plurality of protrusions 6f are arranged along the circumferential direction D2. The inner cylindrical member 7 has a protrusion 7g protruding radially inward on the inner surface 7f of the inner cylindrical member 7. For example, the inner cylindrical member 7 has a plurality of protrusions 7g arranged along the circumferential direction D2. The protrusion 7g enters between two protrusions 6f arranged along the circumferential direction D2.

[0084] The coating container 1 has a ratchet mechanism 9 located at the front end of the inner cylindrical member 7 and the rear end of the internal thread member 8. The ratchet mechanism 9 allows the outer cylindrical member 4 to rotate relative to the front cylinder 2 in one direction, and restricts the outer cylindrical member 4 from rotating relative to the front cylinder 2 in the direction opposite to the one direction.

[0085] When the outer cylindrical member 4 rotates relative to the front cylinder 2 in one direction, the inner cylindrical member 7 and the push rod 6 rotate relative to the front cylinder 2 and the internal thread member 8 together with the outer cylindrical member 4. The push rod 6 rotates relative to the internal thread member 8, and the screwing action of the external thread 6b and the internal thread 8b takes effect, whereby the push rod 6 moves forward relative to the internal thread member 8. On the other hand, since the outer cylindrical member 4 does not rotate relative to the front cylinder 2 in the opposite direction, the push rod 6 does not move backward.

[0086] As described above, the push rod 6 moves forward relative to the inner cylindrical member 7 to press the drawing member M. In the present embodiment, the push rod 6 can only move forward relative to the inner cylindrical member 7 and cannot move backward relative to the inner cylindrical member 7. For example, in the initial state, that is, when the drawing member M is not used (drawing member M is not used), the position of the rear end 6g of the push rod 6 in the axial direction D1 coincides with the position of the rear end 4k of the through hole 4d in the axial direction D1.

[0087] Therefore, in the initial state, the entire visual recognition portion 6d of the push rod 6 can be visually recognized from the through hole 4d through the transparent portion 7b, and the visual recognition portion 6d can be visually recognized in the entire axial direction D1 of the transparent portion 7b. Since the entire visual recognition portion 6d can be seen through the transparent portion 7b, the user of the coating container 1 can understand that the push rod 6 has not been advanced and the drawing member M is not used.

[0088] When the push rod 6 is advanced to use the drawing member M, the visual recognition portion 6d is advanced in the transparent portion 7b, and the length of the visual recognition portion 6d that can be visually recognized in the axial direction D1 is reduced. By observing the shortening of the length of the visual recognition portion 6d seen through the transparent portion 7b, the user can understand that the amount of the drawing member M is reduced.

[0089] When the drawing member M is further used and the drawing member M is about to be exhausted, the visual recognition portion 6d moves further forward in the transparent portion 7b. In addition, the position of the rear end 6g of the push rod 6 in the axial direction D1 coincides with the position of the front end 4t of the through hole 4d in the axial direction D1, so that the visual recognition portion 6d cannot be seen through the transparent portion 7b (refer to Figure 8 (b)) Since the visual confirmation portion 6d cannot be seen through the transparent portion 7b, the user can understand that the drawing material M is about to run out.

[0090] As described above, by visually recognizing the state of the visual recognition portion 6d that can be visually recognized through the transparent portion 7b, it is possible to grasp the remaining amount of the drawing material M. In addition, in order to make the display of the visual recognition portion 6d through the transparent portion 7b easier to understand, the visual recognition portion 6d may be colored. In this case, the remaining amount of the drawing material M can be displayed more easily by visually recognizing the length of the colored visual recognition portion 6d.

[0091] Next, the detailed structure of each component of the coating container 1 will be described. Figure 3 (a) is a side view showing the inner cylindrical member 7. Figure 3 (b) means from Figure 3 (a) A side view of the inner cylindrical member 7 viewed from a different direction. Figure 4 is along Figure 3 (a) is a cross-sectional view taken along the CC line. Figure 2 , Figure 3 (a) Figure 3 (b) and Figure 4 As shown, the inner cylindrical member 7 has, for example, a cylindrical shape extending along the axial direction D1.

[0092] The inner cylindrical member 7 has a recessed portion 7c extending along the axial direction D1 on the outer surface 7d and a flat surface 7h formed on the outer surface 7d. When viewed from the center of the cross section of the inner cylindrical member 7 orthogonal to the axial direction D1, the flat surface 7h is located on the side opposite to the portion exposed from the through hole 4d of the inner cylindrical member 7. The flat surface 7h is, for example, opposed to the protrusion 4p of the outer cylindrical member 4. When viewed from the outside of the inner cylindrical member 7, the flat surface 7h is, for example, rectangular. The flat surface 7h extends from one end 7k of the inner cylindrical member 7 in the axial direction D1 to the vicinity of the other end 7q of the inner cylindrical member 7 in the axial direction D1.

[0093] The recessed portion 7c extends from one end 7k of the inner tubular member 7 in the axial direction D1 to the vicinity of the center of the inner tubular member 7 in the axial direction D1. The recessed portion 7c includes a widening portion 7j extending from one end 7k in the axial direction D1 and a straight portion 7p extending along the axial direction D1 from an end portion on the opposite side of the one end 7k of the widening portion 7j. The width (length in the circumferential direction D2) of the straight portion 7p is constant, and the width of the widening portion 7j widens as it moves from the straight portion 7p toward the one end 7k.

[0094] The inner cylindrical member 7 has a protrusion 7g extending from one end 7k along the axial direction D1 and a convex portion 7r extending from the other end 7q toward the one end 7k on the inner surface 7f. The protrusion 7g extends in a straight line. The inner cylindrical member 7 has a plurality of convex portions 7r, and the plurality of convex portions 7r are arranged along the circumferential direction D2. The plurality of convex portions 7r constitute a ratchet mechanism 9. The function of the ratchet mechanism 9 will be described in detail later.

[0095] Figure 5 (a) is a side view showing the push rod 6. Figure 5 (b) is along Figure 5 (a) is a cross-sectional view taken along the DD line. Figure 5 (a) and Figure 5 As shown in (b), the push rod 6 has an external thread 6b, a locking portion 6c, an enlarged diameter portion 6h at the rear end 6g, and a pressing portion 6k at the front end 6j. The pressing portion 6k is inserted into the second recess 5c of the piston 5 (refer to Figure 1 (b)) The piston 5 is pressed forward.

[0096] As described above, the engaging portion 6c has a protrusion 6f. The protrusion 6f has a first portion 6p extending from the enlarged diameter portion 6h along the axial direction D1 and a second portion 6q extending from the end opposite to the enlarged diameter portion 6h of the first portion 6p toward the external thread 6b. For example, the protrusion height of the first portion 6p to the radial outer side of the push rod 6 is higher than the protrusion height of the second portion 6q to the radial outer side of the push rod 6.

[0097] Figure 6 (a) is a side view showing the internal thread member 8. Figure 6 (b) means from Figure 6 (a) A side view of the internal thread component 8 viewed from a different direction. Figure 7 is along Figure 6 (b) is a cross-sectional view taken along line EE. Figure 6 (a) Figure 6 (b) and Figure 7 As shown, the internal thread member 8 includes a front tube portion 8d, a rear tube portion 8f, and a spring portion 8g located between the front tube portion 8d and the rear tube portion 8f.

[0098] The front side cylinder 8d is, for example, cylindrical. The internal thread 8b of the internal thread component 8 is, for example, formed inside the front side cylinder 8d. The front side cylinder 8d has a convex portion 8j that protrudes from the outer surface 8h of the front side cylinder 8d toward the radial outer side of the internal thread component 8 and extends along the axial direction D1. The convex portion 8j is in contact with the inner surface 2q of the front cylinder 2 (refer to Figure 1 (b)) is engaged in the circumferential direction D2. As a result, the internal thread member 8 is rotatable in sync with the front tube 2 and is engaged so as to be movable relative to the front tube 2 in the axial direction D1.

[0099] The front side tube portion 8d has a plurality of protrusions 8j arranged along the circumferential direction D2. For example, the plurality of protrusions 8j include a first protrusion 8k and a second protrusion 8p having a length in the axial direction D1 longer than the first protrusion 8k. The first protrusion 8k and the second protrusion 8p are arranged alternately along the circumferential direction D2.

[0100] The spring portion 8g includes a cylindrical portion 8q extending from the front cylindrical portion 8d to the rear cylindrical portion 8f and a slit 8r formed in a spiral shape and penetrating the cylindrical portion 8q in the radial direction of the internal thread member 8. For example, the outer diameter of the cylindrical portion 8q is smaller than the outer diameter of the front cylindrical portion 8d and smaller than the outer diameter of the rear cylindrical portion 8f. The spring portion 8g can be extended and retracted along the axial direction D1 by having the slit 8r formed in a spiral shape in the cylindrical portion 8q.

[0101] The rear side cylinder portion 8f is, for example, cylindrical. The rear side cylinder portion 8f has a convex portion 8t that protrudes from the outer surface 8s of the rear side cylinder portion 8f toward the radial outer side of the internal thread member 8 and extends along the axial direction D1. Similar to the convex portion 8j, the convex portion 8t engages with the inner surface 2q of the front cylinder 2 in the circumferential direction D2. The rear side cylinder portion 8f has, for example, a plurality of convex portions 8t arranged along the circumferential direction D2.

[0102] The internal thread component 8 has a protrusion 8v formed at one end in the axial direction D1. For example, the internal thread component 8 has a plurality of protrusions 8v, each of which protrudes from the rear side cylinder 8f in the axial direction D1. The protrusion 8v is formed by an inclined surface 8w inclined relative to both the axial direction D1 and the circumferential direction D2 and a contact surface 8x extending in the axial direction D1 and the radial direction of the internal thread component 8.

[0103] The plurality of protrusions 8v are arranged along the circumferential direction D2. The abutment surface 8x extends forward from the rear end of the inclined surface 8w. The plurality of protrusions 8v and the plurality of convex portions 7r (refer to Figure 4 The plurality of protrusions 8v and the plurality of convex portions 7r together constitute a ratchet mechanism 9.

[0104] When the inner cylindrical member 7 rotates relative to the internally threaded member 8 in the direction (one direction) in which the convex portion 7r contacts the inclined surface 8w of the protrusion 8v, the convex portion 7r passes over the inclined surface 8w in the circumferential direction D2, and the inner cylindrical member 7 and the push rod 6 rotate relative to the internally threaded member 8. At this time, the push rod 6 advances relative to the internally threaded member 8 due to the aforementioned screwing action, and the drawing member M is pressed by the push rod 6 and sent out from the opening 2b of the front tube 2.

[0105] On the other hand, when the inner cylindrical member 7 attempts to rotate relative to the internal thread member 8 in the direction in which the convex portion 7r contacts the abutting surface 8x of the protrusion 8v (the opposite direction), the convex portion 7r does not go over the abutting surface 8x, so the inner cylindrical member 7 does not rotate relative to the internal thread member 8. Therefore, in the present embodiment, since the push rod 6 does not retreat relative to the internal thread member 8, the drawing member M does not retreat either. As described above, the ratchet mechanism 9 allows the inner cylindrical member 7 to rotate relative to the internal thread member 8 in one direction, and restricts the inner cylindrical member 7 from rotating relative to the internal thread member 8 in the opposite direction.

[0106] Next, the operation of each part of the coating container 1 during use will be described. Figure 1 In the state shown in (b), the cover 3 is removed from the front tube 2 to expose the tapered surface 2c and the opening 2b of the front tube 2. When the outer cylindrical member 4 is rotated relative to the front tube 2 in one direction in this state, the outer cylindrical member 4, the inner cylindrical member 7 and the push rod 6 are rotated relative to the front tube 2 and the internal thread member 8 in one direction. At this time, the screwing action of the internal thread 8b and the external thread 6b takes effect, and the push rod 6 moves forward relative to the internal thread member 8, thereby sending the drawing member M from the opening 2b of the front tube 2 for use.

[0107] As described above, when the drawing member M is used for the first time (initial state), the position of the rear end 6g of the push rod 6 in the axial direction D1 coincides with the position of the rear end 4k of the through hole 4d in the axial direction D1. When the drawing member M is sent out from the opening 2b of the front tube 2 in this state, the visual recognition portion 6d of the push rod 6 moves forward relative to the transparent portion 7b of the inner cylindrical member 7, and the length of the portion visible from the transparent portion 7b of the visual recognition portion 6d becomes shorter.

[0108] When you continue to use the drawing element M, Figure 8 (a) and Figure 8 As shown in (b), the visual recognition portion 6d moves further forward relative to the transparent portion 7b, and when the drawing element M is about to be exhausted, the position of the rear end 6g of the push rod 6 in the axial direction D1 coincides with the position of the front end 4t of the through hole 4d in the axial direction D1. Figure 8 (b) and Fig. 9 As shown in (a), since the push rod 6 moves forward and the push rod 6 (visible portion 6d) is no longer present inside the through hole 4d, the visible portion 6d cannot be seen from the transparent portion 7b.

[0109] For example, the inner cylindrical member 7 has a printed portion 7s, and when viewed from the transparent portion 7b, the printed portion 7s is located on the side opposite to the through hole 4d. Figure 8 (b) Fig. 9 (a) and Fig.10 As shown in (a), the printing portion 7s is provided at the front end of the exposed portion 7t which is exposed from the through hole 4d of the inner cylindrical member 7, for example.

[0110] The printing part 7s is provided on the flat surface 7h. For example, the printing part 7s is formed of ink. The printing part 7s is character information. For example, the printing part 7s indicates that the drawing piece M is about to run out (for example, the character "end"). When the push rod 6 is present inside the exposed part 7t, the printing part 7s is blocked by the push rod 6 and cannot be visually recognized.

[0111] However, when the push rod 6 is advanced by using the drawing material M and the rear end 6g of the push rod 6 reaches the front end of the exposed portion 7t, the printed portion 7s hidden by the push rod 6 begins to be visible from the rear side. Furthermore, the rear end 6g advances beyond the front end of the exposed portion 7t and the entire printed portion 7s is visually recognized, so that the user can understand that the drawing material M is about to be exhausted.

[0112] Fig. 9 (b) is a cross-sectional view showing an inner cylindrical member 7A involved in a modified example. The inner cylindrical member 7A has a transparent portion 7v having a shape different from that of the transparent portion 7b, and the structure of the inner cylindrical member 7A other than the transparent portion 7v is the same as that of the inner cylindrical member 7. The inner cylindrical member 7 and the inner cylindrical member 7A respectively have an outer surface 7w opposed to the outer cylindrical member 4 and an inner surface 7f opposed to the push rod 6.

[0113] The transparent portion 7b and the transparent portion 7v each have a first surface 7y exposed from the through hole 4d and a second surface 7z facing the opposite side of the first surface 7y. In a cross section perpendicular to the axial direction D1, the first surface 7y and the second surface 7z of the transparent portion 7b are arc-shaped and extend parallel to each other.

[0114] In the cross section perpendicular to the axial direction D1, the first surface 7y of the transparent portion 7v is arc-shaped. In the cross section perpendicular to the axial direction D1, the second surface 7z of the transparent portion 7v has a convex surface 7z1 that protrudes toward the inner side of the inner cylindrical member 7A relative to the imaginary extension surface S extending along the inner surface 7f.

[0115] For example, the convex surface 7z1 is flat and extends in a direction perpendicular to the radial direction of the inner cylindrical member 7A. However, the convex surface 7z1 may protrude radially inward of the inner cylindrical member 7A. When the transparent portion 7v has the convex surface 7z1, the printing portion 7s appears larger due to the lens effect when the printing portion 7s is observed from the through hole 4d compared with a case without the convex surface 7z1.

[0116] Next, the effects obtained from the coating container 1 according to this embodiment will be described in more detail. Figure 1 (b) and Figure 8 As shown in (b), in the coating container 1, the remaining amount of the drawing material M can be grasped by observing the visual confirmation portion 6d of the plunger 6 which can be visually confirmed through the transparent portion 7b.

[0117] In the coating container 1, the inner cylindrical member 7 having the transparent portion 7b is fixed to the outer cylindrical member 4, and the inner cylindrical member 7 does not move relative to the outer cylindrical member 4. Therefore, since the inner cylindrical member 7 located between the through hole 4d of the outer cylindrical member 4 and the push rod 6 does not move, the possibility of foreign matter entering the inside of the through hole 4d can be reduced, so that the coating container 1 can be made hygienic. In addition, by fixing the inner cylindrical member 7 to the outer cylindrical member 4 at the inside of the through hole 4d, the airtightness of the inside of the through hole 4d can be ensured.

[0118] In the present embodiment, the coating container 1 is provided with a cylindrical internal threaded component 8, which can rotate synchronously with the front tube 2 inside the front tube 2 and has an internal thread 8b inside. The push rod 6 has an external thread 6b that is screwed with the internal thread 8b. The outer cylindrical component 4 can rotate relative to the front tube 2. By the relative rotation of the outer cylindrical component 4 relative to the front tube 2, the screwing action of the external thread 6b and the internal thread 8b plays a role, thereby the push rod 6 moves forward relative to the internal threaded component 8. In this case, the push rod 6 can be moved forward by the relative rotation of the outer cylindrical component 4 relative to the front tube 2, and the drawing member M appears from the opening 2b by the push rod 6.

[0119] In this embodiment, if Figure 8 (b) Fig. 9 (a) Fig. 9 (b) and Fig.10 As shown in (a), the inner cylindrical member 7 has a printing portion 7s located on the side opposite to the through hole 4d when viewed from the transparent portion 7b, and the remaining amount of the drawing material M can be grasped by visually recognizing the printing portion 7s. In this case, the user of the coating container 1 can more directly grasp the remaining amount of the drawing material M by visually recognizing the printing portion 7s. Fig.10 In the example shown in (a), the user can understand that the drawing material M is about to be exhausted by observing the printing unit 7s. Therefore, the remaining amount of the drawing material M can be understood more easily.

[0120] As mentioned above, the inner cylindrical member 7A has an outer surface 7w opposed to the outer cylindrical member 4 and an inner surface 7f opposed to the push rod 6, and the transparent portion 7v has a first surface 7y exposed from the through hole 4d and a second surface 7z facing the side opposite to the first surface 7y. The second surface 7z can have a convex portion 7z1, which protrudes toward the inner side of the inner cylindrical member 7A relative to the imaginary extended surface S extending along the inner surface 7f. In this case, the second surface 7z of the transparent portion 7v protrudes inwardly, so that the transparent portion 7v is lens-shaped. Therefore, when the print portion 7s is visually recognized via the transparent portion 7v, since the print portion 7s is enlarged and visible, it is possible to more easily understand the remaining amount of the depiction member M.

[0121] In the present embodiment, the coating container 1 is provided with a ratchet mechanism 9 that allows the outer cylindrical member 4 to rotate relative to the front tube 2 in one direction and restricts the outer cylindrical member 4 from rotating relative to the front tube 2 in a direction opposite to the one direction. The transparent portion 7b can visually identify the push rod 6 that only moves forward by the outer cylindrical member 4 rotating relative to the front tube 2 in one direction. In this case, since the push rod 6 does not move backward, the remaining amount of the drawing member M based on the visual recognition portion 6d of the push rod 6 can be displayed more accurately. Therefore, the remaining amount of the drawing member M can be more appropriately grasped.

[0122] The above describes the embodiments and variations of the coating container of the present invention. However, the coating container of the present invention is not limited to the aforementioned embodiments or variations, and can be further modified within the scope of the subject matter described in the patent claims. That is, the shape, size, material, quantity and configuration of each part of the coating container of the present invention can be appropriately changed within the scope of the above subject matter.

[0123] For example, in the aforementioned embodiment, if Fig.10 As shown in FIG. 2( a ), the printed portion 7s, which is the character information formed at the front end of the exposed portion 7t of the inner cylindrical member 7, has been described. However, the form of the printed portion is not limited to Fig.10 (a) Example. Fig.10 As shown in (b), the inner cylindrical member 7 may include a printing portion 17s for indicating the remaining amount ratio of the drawing material M instead of the printing portion 7s.

[0124] For example, the printing portion 17s includes a first printing portion 17s1 located at the center of the exposed portion 7t in the axial direction D1 and a second printing portion 17s2 located at the front end of the exposed portion 7t. The first printing portion 17s1 is character information indicating that the remaining amount of the drawing material M is about half (about 50%), and the second printing portion 17s2 is character information indicating that the drawing material M is about to be exhausted (close to about 0%).

[0125] In the coating container having the inner cylindrical member having the printing portion 17s, the user can more accurately grasp the remaining amount of the drawing material M by observing the first printing portion 17s1 and the second printing portion 17s2 gradually appearing from the rear as the drawing material M is used. Therefore, the user can predict the replacement time of the coating container 1 with higher accuracy.

[0126] In addition, Fig.10In the example (b), the first printing section 17s1 showing "50%" and the second printing section 17s2 showing "0%" are described. However, instead of the first printing section 17s1 and the second printing section 17s2, printing sections showing 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100% may be provided.

[0127] Furthermore, the printed portion may not be character information such as "0%", and may be, for example, a scale indicating the remaining amount ratio of the drawing material M. The scale may be formed on the transparent portion 7b, or may be formed above or below the transparent portion 7b in the outer cylindrical member 4 when viewed from the side. In this way, the form of the printed portion indicating the remaining amount of the drawing material M can be appropriately changed.

[0128] Moreover, if Fig.10 (c) and Fig.10 As shown in (d), the coating container may include an inner cylindrical member without a printing portion. In this case, the ratio of the length A2 of the visual recognition portion 6d of the plunger 6 to the length A1 of the transparent portion 7b indicates the remaining amount of the drawing material M. Fig.10 (c) shows that the remaining amount of the drawing material M is about 90%. Fig.10 (d) shows that the remaining amount of the drawing material M is about 5%. In this way, the printing unit can also be omitted.

[0129] In the above-mentioned embodiment, the coating container 1 having the ratchet mechanism 9 that allows the outer cylindrical member 4 to rotate relative to the front tube 2 in one direction only and the push rod 6 that can only move forward is described. However, it is also possible to have a coating container without the ratchet mechanism 9. It is also possible to have a coating container that allows the outer cylindrical member to rotate relative to the front tube in one direction and the opposite direction, and the push rod that moves forward and backward can be visually recognized. In this case, by observing the position of the push rod in the state where the front end of the drawing member is exposed in the opening of the front tube from the transparent portion, the same effect as the above-mentioned embodiment can be obtained.

[0130] In the above-mentioned embodiment, the coating container 1 including the inner cylindrical member 7 and the internal thread member 8 including the internal thread 8b and the spring portion 8g is described. However, the coating container may also include an inner cylindrical member including the internal thread and the spring portion instead of the inner cylindrical member 7 and the internal thread member 8. In this case, the number of components of the coating container can be reduced.

[0131] In the above-mentioned embodiment, the coating container 1 is described in which the outer cylindrical member 4 is rotated in one direction relative to the front cylinder 2 to deliver the drawing material M. However, the coating container may also be a coating container that does not rely on relative rotation. That is, the coating container may be a container having a mechanical extrusion mechanism such as a knocking type and extruding the drawing material through the extrusion mechanism, or a container having an extrusion type extrusion mechanism.

[0132] In the above-mentioned embodiment, the coating container 1 having the drawing material M as a cosmetic is described. However, the drawing material may be a material other than cosmetics. For example, the drawing material may be a core material used in writing tools such as crayons. Thus, the coating container involved in the present invention is not limited to cosmetics, and can be applied to various drawing materials such as writing tools or stationery.

Claims

1. A coating container, comprising: a front barrel accommodating the drawing piece and having an opening for allowing the drawing piece to appear at the front end; an outer cylindrical member connected to a side of the front cylinder opposite to the opening; an inner cylindrical member fixed to the outer cylindrical member inside the outer cylindrical member; and a push rod which is rotatable in sync with the inner cylindrical member inside the inner cylindrical member and which presses the drawing member by advancing relative to the inner cylindrical member, so that the drawing member emerges from the opening; The outer cylindrical member has a through hole formed on a side surface of the outer cylindrical member. At least a portion of the inner cylindrical member exposed from the through hole is provided as a transparent portion, and the interior of the inner cylindrical member can be visually recognized through the transparent portion. The push rod has a visually-recognizable portion that can be visually recognized from the outside of the inner cylindrical member via the transparent portion, and the remaining amount of the drawing material can be grasped by visually recognizing the state of the visually-recognizable portion that can be visually recognized via the transparent portion.

2. The coating container according to claim 1, comprising: The cylindrical internal thread component can rotate synchronously with the front cylinder inside the front cylinder and has an internal thread inside. The push rod has an external thread that is threadedly engaged with the internal thread. The outer cylindrical member is rotatable relative to the front cylinder. The outer cylindrical member rotates relative to the front cylinder, and the screwing action of the external thread and the internal thread is exerted, so that the push rod moves forward relative to the internal thread member.

3. The coating container according to claim 1 or 2, wherein: The inner cylindrical member has a printing portion, and when viewed from the transparent portion, the printing portion is located on the side opposite to the through hole. By visually checking the printing unit, the remaining amount of the drawing material can be understood.

4. The coating container according to claim 3, wherein: The inner cylindrical member has an outer surface facing the outer cylindrical member and an inner surface facing the push rod. The transparent portion has a first surface exposed from the through hole and a second surface facing a side opposite to the first surface. The second surface has a convex portion that protrudes toward the inside of the inner cylindrical member relative to a virtual extension surface extending along the inner surface.

5. The coating container according to claim 2, comprising: The ratchet mechanism allows the outer cylindrical member to rotate relative to the front cylinder in one direction and restricts the outer cylindrical member from rotating relative to the front cylinder in a direction opposite to the one direction. The transparent portion enables visual recognition of the push rod that has only moved forward due to the relative rotation of the outer cylindrical member with respect to the front cylinder in the one direction.

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