JP2012005769A - Cosmetic substance dispensing container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain stronger thread-engagement force between a male thread and a female thread by improving the engagement of push rod in which the male thread is formed with a female thread cylinder.SOLUTION: The cosmetic substance dispensing container includes a tip cylinder 10 into which a cosmetic substance A is inserted, a base cylinder 20 attached rotatably to the tip cylinder 10, a push rod 30 having a male thread 33 on the outer periphery and pushing the cosmetic substance A out of the tip opening 11 projecting/retreating by the relative rotation of the tip cylinder 10 and the base cylinder 20, and a female thread cylinder 40 having a female thread 43 to be threadedly engaged with the male thread 33 on the inner periphery and engaging and rotating synchronously with the inner periphery of the base cylinder 20. The female thread cylinder 40 provides channels 46 formed thinner than that of the other part of the female thread cylinder 40 and the female thread cylinder is attached to the push rod 30 while part of the periphery of the channel 46 is split to form a cut surface 47.

Description

  The present invention relates to a cosmetic material feeding mechanism and relates to a cosmetic material feeding container.

  When trying to make the feeding lead small in the cosmetic material feeding container, the lead of the male screw of the feeding member is made small. When assembling the female screw member to be screwed into the male screw, it is difficult to assemble because it does not reach a predetermined position unless it is rotated many times. For this reason, a female thread cylinder has been proposed that facilitates assembly.

  Patent Document 1 discloses a rotary rod-shaped object feeding tool in which a split groove is formed in a part of the circumference of an intermediate screw member screwed with a male screw portion of a slider, and a gap portion is formed in the outer periphery on the opposite side of the split groove. Is disclosed. In this rotary rod-shaped object feeding tool, the intermediate screw member can be screwed to the screw portion of the slider by narrowing the gap portion of the intermediate screw member and expanding the split groove.

Japanese Patent No. 3724769

  However, in the rotary rod-shaped object feeding tool disclosed in Patent Document 1, since the middle screw member is largely deformed manually and is assembled to the slider in a state where the split groove is expanded, it takes time to assemble the middle screw member and the slider. Further, since the intermediate screw member is easily deformed, there is a possibility that the sliding movement of the slider cannot be smoothly performed.

  An object of the present invention is to solve the above-mentioned problems, to improve the assembling property of an extrusion rod on which a male screw is formed and a female screw cylinder, and to obtain a strong screwing force between the male screw and the female screw.

  The present invention includes a tip tube in which a tip opening hole is formed at a tip, a decorative material is inserted, a base tube that is rotatably assembled to the tip tube, and a male screw formed on an outer periphery, and the tip tube and the base tube A push rod that advances and retreats by relative rotation to advance the cosmetic material from the tip opening hole, and a female screw that engages with the male screw is formed on the inner periphery, and is engaged with the inner periphery of the base tube. A female material delivery container comprising a female screw cylinder that rotates synchronously, wherein the female screw cylinder has a split groove formed thinner than other portions of the female screw cylinder, and a part of the circumference of the split groove is split. And being assembled to the extrusion trough in a state where a cut portion is formed.

  According to the present invention, since a split groove having a cut portion in which a part of the circumference of the female screw cylinder is broken is formed, in a state where the diameter of the female screw cylinder is expanded to such an extent that the male screw and the female screw are not screwed together, The female cylinder can be slid in the axial direction and assembled to the extrusion rod.

  Therefore, the assembling property of the extrusion rod on which the male screw is formed and the female screw cylinder is improved, and a strong screwing force between the male screw and the female screw can be obtained.

It is a perspective view which shows the cosmetic material delivery container which concerns on the 1st Embodiment of this invention. (A) is sectional drawing of a cosmetic material delivery container when a cosmetic material exists in a descent | fall limit, (B) is sectional drawing of the left side surface in FIG. 2 (A). Each member used for the cosmetic material delivery container of FIG. 1 is shown, (C) is a leading tube, (D) is an extrusion rod, (E) is a base tube, and (F) is a stopper member. (G) is an enlarged view of the female thread cylinder used in the cosmetic material feeding container of FIG. 1, (Ga) is a diagram showing a parting line when molding the female thread cylinder, (Gb) It is a block diagram of the metal mold | die at the time of shape | molding a female thread cylinder. (H) is sectional drawing of the front which shows the cosmetic material delivery container which concerns on the 2nd Embodiment of this invention, (I) is sectional drawing of the left side surface in FIG. 5 (H). (J) is sectional drawing of the cosmetic material delivery container which concerns on the 3rd Embodiment of this invention, (J ') is AA sectional drawing in FIG.6 (J), (K) is (L) is an enlarged view of a female screw cylinder in which a cut piece is removed and a slit is formed. Each member used for the cosmetic material delivery container of FIG. 6 is shown, (M) represents a front tube, (N) represents a base tube, and (O) represents an extrusion rod and a female screw tube. (M ′) is a cross-sectional view taken along the line BB in FIG.

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

(First embodiment)
Hereinafter, the cosmetic material supply container 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.

  As shown in FIG. 1, the cosmetic material feeding container 1 includes a container body 2 and a cap 3 that is covered with the container body 2.

  2 (A) and 2 (B) are longitudinal sectional views of the container body 2. FIG. The decorative material A is filled with liquid from the tip opening hole 11 of the front tube 10 and solidified by cooling. FIG. 2B is a diagram illustrating a state in which the container body 2 illustrated in FIG. 2A is rotated 90 degrees around the central axis.

  3 and 4 are diagrams showing the members of the container body 2. FIG. 3 (C) shows the leading tube 10, FIG. 3 (D) shows an extrusion rod 30 as a push rod, and FIG. 3 (E) shows a base. FIG. 3F is a view showing the cylinder 20 and the stopper member 50. FIG. 4G is a view showing the female screw cylinder 40.

  Hereinafter, each member which comprises the container main body 2 is demonstrated in detail.

  The front tube 10 shown in FIG. 3C has a cylindrical shape, and includes a sandwiching portion 15, a large diameter portion 16, and a base tube insertion portion 17 in the axial direction. A cavity portion 12 into which the decorative material A is inserted is formed on the inner periphery of the front tube 10, and a rotation stop convex portion 13 projects from the lower end of the inner periphery.

  Further, a cap fitting portion 14 is formed on the outer periphery of the sandwiching portion 15, and a base tube fitting portion 19 is formed on the outer periphery of the base tube insertion portion 17. A through hole 18 is formed in the inner periphery of the front tube 10, and a tip opening hole 11 is formed at the tip.

  The extrusion rod 30 shown in FIG. 3D is a member that slides and moves in the axial direction in the cavity 12 in the front tube 10. The extrusion rod 30 has a head portion 31 formed at the tip in the axial direction, a rod shaft 32 extending from the head portion 31, and male screws 33 and 33 ′ having stroke lengths formed on the outer periphery of the rod shaft 32. . The male screws 33 and 33 'are formed as a pair spaced apart at an interval of 180 degrees.

  Between the male screw 33 and the male screw 33 ′, a rotation stop groove 34 that engages with the rotation stop convex portion 13 of the front tube 10 is formed as a concave groove. Further, a U groove 39 into which the stopper member 50 is fitted is formed near the rear end of the rod shaft 32.

  The head 31 has a top surface 38, and an O-ring is wound around the O-ring groove 36. Thereby, the leakage of the decorative material A from between the front tube 10 and the extrusion basket 30 is prevented.

  The base cylinder 20 shown in FIG. 3E is formed in a bottomed cylindrical shape having a bottom surface 25. On the inner periphery of the base tube 20, a fitting recess 22 that is rotatably connected to the front tube 10, a step portion 24 on which the female screw tube 40 is placed, and a protrusion that protrudes from the outer periphery of the female screw tube 40, which will be described later. A knurling 23 that engages with the vertical rib 44 is formed. The base tube 20 is assembled coaxially with the front tube 10 so as to be relatively rotatable.

  A stopper member 50 shown in FIG. 3 (F) is a cylindrical elastic body having a space 52. The stopper member 50 is fixed by fitting the inner peripheral ridge 51 and the U groove 39 of the extrusion rod 30. The front end surface 53 of the stopper member 50 is in contact with the lower end surface 49b (see FIG. 4G) of the female screw cylinder 40, thereby limiting the pushing bar 30 to the ascending limit. Further, the lower end surface 37 (see FIG. 3D) of the head 31 of the extruded rod 30a comes into contact with the upper end portion 13a (see FIG. 3C) of the rotation stop convex portion 13 in the front tube 10, thereby pushing the extruded rod. The lower limit is 30. Thus, the feeding stroke of the extrusion rod 30 is limited.

  The female screw cylinder 40 shown in FIG. 4G is engaged with a knurling 23 formed on the inner periphery of the base cylinder 20 and rotates synchronously. Three internal ribs 44 project from the cylindrical outer peripheral wall 41 to the female thread tube 40. The inner peripheral wall 42 is threaded with a female screw 43 extending substantially twice in the lower part. A split groove 46 extending in the axial direction is formed on the outer periphery of the female screw cylinder 40. A cutting portion 47 that is cut by post-processing is formed in the split groove 46.

  The split groove 46 is formed in a wedge shape from the outer periphery to the inner periphery of the female cylinder 40 at the time of molding. That is, the split groove 46 is formed to be thinner than the other parts of the female screw cylinder 40.

  Specifically, as shown in the enlarged view S, the split groove 46 is formed to a depth from the outer peripheral wall 41 of the female screw tube 40 to the front of the bottom of the valley portion of the female screw 43. Therefore, the thickness of the female screw cylinder 40 in the split groove 46 is formed as an extremely thin wall in which the crest of the female screw 43 and a part of the inner periphery of the outer peripheral wall of the female screw cylinder 40 are connected in an annular shape. The female screw tube 40 is easily cut because stress concentrates on the portion where the split groove 46 is formed. When the rod shaft 32 is screwed into the male thread 33 in the extrusion rod 30, the cutting groove 46 is cut by cutting the threaded portion of the female screw 43 and a part of the inner periphery of the outer peripheral wall of the female screw tube 40. 47 is formed.

  The split groove 46 may be formed deeply so that only the crests of the female screw 43 are connected during molding. Also in this case, it is possible to divide the split groove 46 using the stress concentration and form the cut portion 47.

  The female screw 43 is screwed with the male screws 33 and 33 ′ of the extrusion rod 30 to constitute a feeding mechanism. Thereby, when the front tube 10 and the base tube 20 are relatively rotated, the extrusion rod 30 is advanced and retracted by screwing the male screws 33, 33 ′ and the female screw 43, and the decorative material A can be advanced from the tip opening hole 11. .

  The female screw 43 is formed only at a part of the lower end of the inner periphery of the female screw cylinder 40. Compared with the case where the female screw 43 is formed over the entire length of the female screw cylinder 40, the cutting portion 47 can be easily formed because the portion that is cracked after molding is reduced by the smaller number of circumferences of the female screw 43.

  Even if the cutting portion 47 is formed, the cutting portion 47 is closed in a normal screwed state, and therefore the female screw 43 is in contact with the portion that is cracked by the cutting portion 47 and continues to the inner periphery of the female screw cylinder 40. Is formed. Therefore, even if the number of circumferences of the female screw 43 is small, the screwing of the female screw 43 and the male screws 33 and 33 'can be ensured.

  Here, as described above, the extension stroke of the pusher bar 30 is limited by the front end surface 53 of the stopper member 50 and the lower end surface 49b of the female screw tube 40 coming into contact with each other. The lower limit is limited by the contact between the upper end portion 13 a of the portion 13 and the lower end surface 37 of the head 31 of the extrusion rod 30. Therefore, since the position in the axial direction where the female thread 43 is formed does not affect the feeding stroke, the female thread 43 can be formed at an arbitrary position in the axial direction of the female thread cylinder 40. Therefore, the female screw cylinder 40 can be assembled regardless of the top and bottom without worrying about the axial position and number of threads of the female screw 43.

  As described above, the female screw cylinder 40 of the present invention is characterized in that one portion of the circumference is cut to form the cut portion 47, and one or more female screws 43 are screwed on the inner peripheral wall.

  Furthermore, the longitudinal rib 44c protrudes from the outer peripheral wall 41 which opposes the cutting part 47, and it is characterized by engaging with the knurling 23 of the base cylinder 20.

  The male screws 33 and 33 ′ formed on the extrusion rod 30 are guaranteed to be screwed securely even if they are not screwed on the entire outer periphery. In particular, when the decorative material A is directly filled, the decorative material A is in close contact with the inner wall of the front tube 10, and in order to advance the extrusion rod 30 finely, the female screw 43 and the male screws 33 and 33 ' A strong screwing force is required.

  The internal thread cylinder 40 of the present invention can be expanded in diameter because one portion of the circumference is cut to form the cut portion 47. The female screw tube 40 is assembled to the extrusion rod 30 by sliding the female screw tube 40 in the axial direction in a state where the diameter of the female screw tube 40 is expanded to such an extent that the male screws 33, 33 ′ and the female screw 43 are not screwed together. In this manner, the male thread 33 can be assembled by sliding from the lower end side of the bar shaft 32 of the extrusion rod 30 to the position where the upper end surface 49 of the female thread barrel 40 contacts the lower end surface 37 of the head 31. , 33 ', and it is not necessary to rotate along the pitch, and a strong screwing force can be obtained.

  Next, a method for manufacturing the female screw cylinder 40 of the present invention will be described. The female screw cylinder 40 is molded by plastic injection molding, and the material is a thermoplastic resin such as POM (polyacetal), ABS (acrylonitrile / butadiene / styrene copolymer synthetic resin), PP (polypropylene), or the like.

  FIG. 4 (Ga) and FIG. 4 (Gb) are views for explaining a mold for producing the female screw cylinder 40 by injection molding. FIG. 4 (Ga) is a diagram showing a slide type PL (parting line). Two vertical ribs 44a and 44b project from PL as a vertex, and one vertical rib 44c extends in the 90-degree direction of PL. However, it protrudes at a position facing the split groove 46.

  FIG. 4 (Gb) is a simplified diagram of the mold showing the relationship between the female screw 43 and the cavity 45, and the core pin X that becomes the female screw 43 from the fixed side comes into contact with the core pin Y that becomes the cavity 45 on the movable side. Indicates the state. After the injection molding, the core pin X is rotated and retracted, the slide is then opened by an angular pin (not shown), the core pin Y forming the cavity 45 is removed by the stripper plate, and the female thread cylinder 40 is molded. .

  In the female screw cylinder 40 formed of a material such as POM or ABS, if a force is applied to the inner side of the vertical ribs 44a and 44b of the female screw cylinder 40, the portion where the split groove 46 is formed is cracked due to stress concentration, and the cut portion 47 can be formed easily.

  In addition, the cutting portion 47 can be easily formed by passing a tapered shaft through the through hole 48.

  The container body 2 using the female screw cylinder 40 is assembled by the following procedure.

  The extrusion rod 30 on which the O-ring is wound is inserted from the tip opening hole 11 of the front tube 10, and the rotation stop groove 34 of the extrusion rod 30 is formed on the rotation stop convex portion 13 formed at the lower end of the front tube 10. The lower end surface 37 of the head portion 31 is brought into contact with the upper end surface of the rotation stop convex portion 13 while being engaged.

  Next, the female screw tube 40 is inserted into the cavity 45 from the rear end portion of the extrusion rod 30, and the female screw tube 40 is further slid along the rod shaft 32, so that the upper end surface 49 a of the female screw tube 40 is the lower end surface of the front tube 10. Slide until it touches. Further, the stopper member 50 is fitted into the U groove 39 of the extrusion rod 30.

  In a state where the front tube 10, the extrusion rod 30, the female screw tube 40, and the stopper member 50 are assembled, they are inserted along the front tube insertion portion 21 of the base tube 20, and the base tube fitting portion of the front tube 10 Assembling is completed by fitting 19 and the fitting recess 22 of the base cylinder 20.

  At this time, the female cylinder 40 is integrated with the base cylinder 20 because the vertical ribs 44 a, 44 b, and 44 c protruding from the outer periphery engage with the knurls 23 in the base cylinder 20.

  The container main body 2 shown in FIG. 2 is assembled by the above assembling procedure, and shows the paying down limit. In this state, the decorative material A is filled from the tip opening hole 11 of the front tube 10.

  When the front tube 10 and the base tube 20 are relatively rotated, the male threads 33 and 33 ′ protruding from the outer periphery of the rod shaft 32 of the extrusion rod 30 and the internal thread tube 40 integrated with the base tube 20 The peripheral female screw 43 is screwed together, and the rotation-preventing convex portion 13 at the inner diameter end of the front tube 10 engaged with the rotation-stop groove 34 of the extrusion rod 30 constitutes a rotation-stopping mechanism. A protrudes from the tip opening hole 11 of the front tube 10 to enable makeup.

  2, the lower end surface 37 of the head 31 of the extrusion rod 30 is positioned at the position where the lower end surface 37 of the rotation stop projection 13 formed at the lower end of the inner diameter of the front tube 10 is lowered, and the stopper member 50 The position at which the front end surface 53 of the first abutment 53 abuts on the lower end surface 49b of the female screw cylinder 40 is set as the upper limit.

  In the direct filling type dispensing container as in the first embodiment, the top surface 38 of the extrusion trough 30 cannot be seen by the user. For this reason, at the upper limit of feeding, the user tries to feed with a stronger force.

  In the present invention, when an operation for further extending and lowering is performed at the ascending and descending limits of the feeding and a rotation load is applied, the male threads 33 and 33 'of the extrusion rod 30 and the female thread 43 of the female thread cylinder 40 are connected. The screwing is released. This unscrewing is performed by the bar shaft 32 of the extrusion rod 30 escaping in the direction of the split groove 46 of the female thread cylinder 40 and the cutting part 47 being opened.

  At this time, the vertical rib 44c that protrudes from the outer peripheral wall 41 facing the cutting portion 47 and engages with the knurl 23 of the base cylinder 20 causes the female screw 43 and the male screws 33 and 33 'to be screwed in the cutting portion direction. Have a role to escape.

  The female screw 43 and the male screws 33 and 33 ′ released from the screwing are screwed again by the force of the inner peripheral wall 42 near the cutting portion 47. At this time, when the screw release and the screw return are repeated in the ascending limit and the descending limit, the user is notified with a crackling sound.

  Further, the clutch mechanism can prevent damage to the internal thread 43 of the internal thread cylinder 40 and the external threads 33, 33 'of the extrusion rod 30.

  Since the feeding mechanism of the present invention aims to advance the extrusion rod 30 with fine movement, the assembling property is good, and the male screw 33, 33 'is raised even though the screwing force of the female screw 43 is strong. It has a clutch mechanism at the limit and descent limit.

  Further, in this embodiment, the vertical rib 44 c facing the cutting portion 47 protruding from the outer peripheral wall 41 of the female screw tube 40 is protruding from the outer peripheral wall 41 directly behind the cutting portion 47. The ribs 44 c are not limited to being directly behind, but may be two or three as long as they release the screwing in the direction of the cutting portion 47, and it is obvious that various changes can be made.

  According to the above embodiment, the following effects are obtained.

  Since the split groove 46 is formed in the female thread tube 40 and the cutting portion 47 is formed when the female thread tube 40 is attached to the extrusion rod 30, the diameter of the female thread tube 40 is expanded to such an extent that the male screws 33, 33 ′ and the female thread 43 are not screwed together. In this state, the female cylinder 40 can be slid in the axial direction and assembled to the extrusion rod 30. Further, when a further rotational load is applied at the upper limit and the lower limit of the decorative material A, a clutch mechanism that repeats screw release and screw return when the cutting portion 47 is opened works.

  Therefore, the assembling property between the extrusion rod 30 on which the male threads 33 and 33 ′ are formed and the female thread cylinder 40 is improved, and a strong screwing force between the male threads 33 and 33 ′ and the female thread 43 can be obtained. Damage can be prevented.

(Second embodiment)
Hereinafter, the cosmetic material supply container 101 according to the second embodiment of the present invention will be described with reference to FIG. In the following embodiments, the same reference numerals are given to the same components as those in the above-described embodiments, and the overlapping description will be omitted as appropriate.

  The second embodiment is different from the first embodiment in that a cosmetic material B that is a liquid cosmetic is used.

  The cosmetic material feeding container 101 includes a base tube 20 and a front tube 110 that are relatively rotatable, an extrusion rod 30 that feeds the cosmetic material B, and a female screw tube 40 that is screwed into the extrusion rod 30. In the cosmetic material supply container 101, the same member as that of the first embodiment can be used for the base tube 20, the extrusion rod 30, the female screw tube 40, and the stopper member 50.

  A front end member 120 that locks the cosmetic B in the front tube 110 is fitted to the front end of the front tube 110. An annular groove 112 into which the tip member 120 is fitted is formed on the outer periphery of the front tube 110.

  A plurality of holes 121 into which the decorative material B advances are formed on the distal end surface of the distal end member 120. On the outer periphery of the tip member 120, an annular convex portion 122 that fits with the annular groove 112 of the leading tube 110 is formed.

  The cosmetic material feeding container 101 includes a cap 103 that is fitted on the outer periphery of the front tube 110 and covers the tip member 120. This cap 103 is formed longer than the cap 3 in the first embodiment by the length of the tip member 120 attached to the tip of the front tube 110.

  Next, the operation of the cosmetic material feeding container 101 will be described.

  When the base tube 20 and the front tube 110 are rotated relative to each other by the user's operation, the pusher rod 30 moves in the axial direction by screwing between the male screws 33 and 33 ′ of the pusher rod 30 and the female screw 43 of the female screw tube 40. The extrusion rod 30 advances or retracts depending on the rotation direction of the relative rotation between the base tube 20 and the front tube 110.

  When the extrusion basket 30 advances, a part of the decorative material B filled in the front tube 110 is pushed out from the hole 121 of the tip member 120. Thereby, the user can apply makeup.

  If the extruded bar 30 continues to advance and the front end surface 53 of the stopper member 50 comes into contact with the lower end surface 49b of the female cylinder 40, the extruded bar 30 cannot advance further. Thereby, the upper limit of the extrusion rod 30 is regulated.

  The decorative material B is confined by the tip tube 110, the tip member 120, and the extrusion rod 30 except that the hole 121 is formed in the tip member 120. Therefore, the decorative material B does not flow out of the hole 121 in addition to the case where the extrusion basket 30 advances.

  As described above, when the liquid cosmetic material B is used in place of the solid cosmetic material A, it can be applied only by changing the front tube 110 and the cap 103 and adding the tip member 120.

(Third embodiment)
Hereinafter, a cosmetic material feeding container 201 according to a third embodiment of the present invention will be described with reference to FIGS. 6 and 7.

  The third embodiment is different from the previous embodiments in that a cosmetic material C, which is a small-diameter stick-shaped cosmetic material such as an eyebrow, an eyeliner, or a lip liner, is used.

  The cosmetic material supply container 201 includes a front tube 210 in which a front end opening hole 211 is formed at the front end, and a base tube 220 that is rotatably assembled to the front tube 210. In addition, the cosmetic material feeding container 201 includes an extrusion rod 230 that advances and retreats in the axial direction by the relative rotation of the front tube 210 and the base tube 220, and a female screw tube 240 that rotates in synchronization with the inner periphery of the base tube 220. Prepare.

  As shown in FIG. 7M, the front tube 210 includes a knob portion 214 in the axial direction and a base tube insertion portion 215 that follows the knob portion 214. The front tube 210 has a through hole 212 (see FIG. 6 (J)) having substantially the same dimensions as the tip opening hole 211, and four sliding grooves 213 (FIG. 6 (J)) along the through hole 212. )) Is provided.

  In addition, the base tube insertion portion 215 is provided with an annular convex portion 218 for rotatably connecting to the base tube 20 and an O-ring groove 216 is formed.

  The base cylinder 220 shown in FIG. 7 (N) is formed in a bottomed cylindrical shape, and a fitting recess 223 connected to the front cylinder 210 is provided inside the tip opening hole 225. A step 222 and a knurl 221 are formed.

  In the extrusion rod 230 shown in FIG. 7 (O), the cosmetic material holding portion 231 at the tip is formed by four claw pieces 232, and four engagement strips 233 extending to the claw pieces 232 are provided. Further, a rod shaft 234 is formed on the outer periphery of the rod member 235 having a stroke length and is formed on the outer periphery, and a cylindrical portion 236 having a larger diameter than the rod shaft 234 is formed at the rear. It is formed.

  The extrusion rod 230 is formed such that the diameter dimension of the male screw 235 is smaller than the diameter dimension of the engaging strip 233 and smaller than the diameter dimension of the cylindrical portion 236. Therefore, the female thread tube 240 shown in FIG. The shaft 234 is assembled so as to be pushed from a slit 252 as a notch.

  Hereinafter, the female screw tube 240 will be described in more detail with reference to FIGS.

  The female screw tube 240 is a member formed into a thin C-shape with a resin such as plastic. The female screw tube 240 is restrained in the axial direction by being sandwiched between the lower end surface 217 (see FIG. 7M) of the front tube 210 and the stepped portion 222 (see FIG. 7N) of the base tube 220, The vertical ribs 244a to 244c are engaged with the knurls 221 of the base cylinder 220 to restrain the rotation (see FIG. 6 (J ′)).

  The female screw tube 240 includes a slit 252 that is partially open and extends in the axial direction, and a female screw 243 that is formed over the entire circumference of the inner peripheral wall corresponding to the male screw 235 of the extrusion rod 230. . The female screw tube 240 is formed to have a C-shaped cross-section by providing the slit 252. Thereby, the rod shaft 234 can be fitted to the female screw tube 240 from the slit 252.

  As shown in FIG. 6 (K), the female screw tube 240 is formed with a pair of split grooves 246a and 246b at the time of molding. Each of the split grooves 246 a and 256 b is cut at the cutting portions 247 a and 247 b by passing a tapered shaft through the through hole 248 of the female screw tube 240. Thereby, the cut piece 251 between the split grooves 246a and 246b is removed in the female screw tube 240, and a slit 252 is formed.

  The split grooves 246a and 246b are formed in a wedge shape having a depth from the outer peripheral wall of the female screw tube 240 to the bottom of the valley portion of the female screw 243 in the same manner as the split groove 46 in the first embodiment. Therefore, the thickness of the female screw tube 240 in the split grooves 246a and 246b is formed as an extremely thin wall in which the crest of the female screw 243 and a part of the inner periphery of the outer peripheral wall of the female screw tube 240 are connected in an annular shape. The female screw tube 240 is easily cut because stress concentrates on the portions where the split grooves 246a and 246b are formed. When threaded into the extrusion rod 230, the female thread 240 is split into a crest of the female thread 243 and a part of the inner periphery of the outer peripheral wall of the female thread cylinder 240, and a part of the inner thread is removed. A slit 252 is formed.

  Note that the split grooves 246a and 246b may be formed deeply so that only the crests of the female screw 243 are connected during molding. Also in this case, the slits 252 can be formed by splitting the split grooves 246a and 246b using stress concentration.

  The slit width of the slit 252 is formed to be smaller than the outer diameter of the male screw 235 of the rod shaft 234. As a result, it is possible to push the rod shaft 234 into the female screw tube 240 and insert it, and to prevent the inserted rod shaft 234 from coming off the female screw tube 240. Thus, when the extrusion rod 230 is pressed against the slit 252 and pushed in, the screwing of the female screw 243 and the male screw 235 is completed. This operation can be performed with one touch.

  Vertical ribs 244 a and 244 b protrude from the outer peripheral wall of the female screw tube 240 in parallel with the slit 252, and vertical ribs 244 c protrude from the outer peripheral wall on the opposite side of the slit 252. These vertical ribs 244a to 244c are engaged with the step 222 of the inner diameter of the base cylinder 220 and the knurl 221 so that the base cylinder 220 and the female thread cylinder 240 are integrated (see FIG. 6 (J ')).

  The central vertical rib 244c among the vertical ribs 244a to 244c is formed on the outer peripheral wall of the female screw tube 240 at a position facing the slit 252, that is, on the outer peripheral wall on the opposite side of the slit 252 by 180 °. The number of vertical ribs 244c formed on the outer peripheral wall at a position facing the slit 252 may be two or more instead of one. That is, at least one vertical rib 244 c among the plurality of vertical ribs 244 a to 244 c is formed on the outer peripheral wall at a position facing the slit 252.

  Here, a female screw 243 is formed on the inner peripheral wall of the female screw tube 240 over the entire circumference. A force in a direction away from the rod shaft 234 acts on the female screw tube 240 by screwing the female screw 243 of the female screw tube 240 and the male screw 235 of the rod shaft 234. For this reason, the bar shaft 234 increases the slit width of the slit 252 and tries to protrude from the female screw tube 240, and the female screw tube 240 tends to move away from the bar shaft 234.

  Since the female rib 240 is provided with a vertical rib 244 c on the outer peripheral wall at a position facing the slit 252, the vertical rib 244 c engaged with the knurl 221 functions as a stopper, so that the female screw 240 is separated from the rod shaft 234. This prevents the female screw 243 and the male screw 235 from being screwed together.

  Further, the vertical ribs 244 a and 244 b at both ends are formed on the outer peripheral wall near the free end facing the slit 252 of the female screw tube 240. As a result, when a force that widens the slit width of the slit 252 acts from the rod shaft 234, the vertical ribs 244a and 244b engaged with the knurl 221 function as a stopper that supports the free end of the female screw tube 240. It can be prevented that the female screw tube 240 is deformed and the slit width of the slit 252 is increased. Therefore, the rigidity of the female screw tube 240 is increased, the screwing of the female screw 243 and the male screw 235 is ensured, and the rod shaft 234 can be prevented from coming off from the female screw tube 240.

  The female screw 243 is formed only at a part of the lower end of the inner periphery of the female screw tube 240 in the same manner as the female screw 43 in the first embodiment. However, the present invention is not limited to this position. It is possible to form in the position. Therefore, the female screw tube 240 can be assembled regardless of the top and bottom without worrying about the axial position and number of threads of the female screw 243.

  The cosmetic material feeding container 201 of the present invention is assembled in the following procedure.

  First, the rod shaft 234 of the extrusion rod 230 is pushed into and fitted into the slit 252 of the female screw tube 240. This work can be done with one touch.

  Since the slit width of the slit 252 is set to be smaller than the diameter dimension of the male screw 235, the female screw 235 screwed on the circumference of the bar shaft 234 is simultaneously fitted into the female shaft 240. And the female screw 243 of the female screw tube 240 are screwed together.

  Further, the female screw tube 240 fitted to the rod shaft 234 does not escape from the rod shaft 234 and the position thereof does not shift in the axial direction.

  It is fitted at a position where the rear end surface of the engaging strip 233 and the front end surface of the female cylinder 240 come into contact with each other. In this state, the claw piece 232 of the extrusion rod 230 is inserted into the sliding groove 213 from the lower end surface 217 of the front cylinder 210. As it is inserted, the engaging strip 233 extending to the claw piece 232 is also guided into the sliding groove 213, and a rotation stop mechanism is configured.

  Then, the lower end surface 217 of the front tube 210 and the front end surface of the female screw tube 240 abut. When the extrusion rod 230 is inserted into the base cylinder 220 from the tip opening hole 225 of the base cylinder 220 sequentially from the cylindrical portion 236, the vertical ribs 244a, 244b, and 244c of the female thread cylinder 240 have the inner diameter of the base cylinder 220. The female cylinder 240 and the base cylinder 220 are integrated with each other by engaging with the step portion 222 and the knurling 221. At that time, the assembly is completed by fitting the annular convex portion 218 of the front tube 210 and the fitting concave portion 223 of the inner periphery of the base tube 220 so as to be rotatable.

  Next, the operation of the cosmetic material feeding container 201 will be described.

  As shown in FIG. 6 (J), when the front tube 210 and the base tube 220 are rotated relative to each other in the decorative material feeding container 201 in which the decorative material C is located at the lower limit, the engagement strip portion 233 of the extrusion rod 230 is The male screw 235 screwed on the circumference of the bar shaft 234 is screwed into the female screw 243 of the female screw tube 240 to constitute the feeding mechanism. To do. Further, since the female screw tube 240 is integrated with the base tube 220, the decorative material C advances in accordance with the lead of the male screw 235 of the bar shaft 234. The decorative material C protrudes from the tip opening hole 211 of the front tube 210 and can be made up.

  When a further turning load is applied in the state of the lowering lower limit in FIG. 6 (J), the female screw 243 installed on the opposite side of the slit 252 of the female screw tube 240 is screwed to the outer periphery of the rod shaft 234. The engraved male screw 235 moves slightly in the direction of the slit 252 after being unscrewed.

  However, since the diameter dimension of the male screw 235 in the rod shaft 234 is larger than the width of the slit 252, it does not escape from the slit 252. The unscrewed male screw 235 is pressed against the inner diameter surface near the slit 252 to return to the screwing state.

  By this operation, a cracking sound is made to repeat screwing / removing and screwing return, thereby informing the user of the lowering lower limit position.

  In a feeding container having a small feeding pitch, the filling of the cosmetic material C is usually automatically rotated by a machine. For this reason, the upper and lower limit clutch mechanisms by the rotational load are necessary absolute conditions.

  The clutch in the lowering / lowering limit of the present invention is also performed in the upper / lowering limit, making a crackling sound to notify the uppering / lowering limit and damaging the internal thread 235 of the female screw tube 240 and the rod shaft 234 of the extrusion rod 230. There is no.

  At the time of clutching at the lowering / lowering limit, the force in the direction away from the rod shaft 234 acting on the female screw cylinder 240 is larger than that during normal screwing of the male screw 235 and the female screw 243. Also in such a clutch, the vertical rib 244c provided on the outer peripheral wall at a position facing the slit 252 and engaged with the knurl 221 functions as a stopper, and the female screw tube 240 tends to be separated from the rod shaft 234. Can be prevented. Further, the longitudinal ribs 244a and 244b formed on the outer peripheral wall of the free end facing the slit 252 of the female screw tube 240 at both ends also function as a stopper, and the rod shaft 234 can be prevented from coming off from the female screw tube 240.

  According to the above embodiment, the following effects are obtained.

  Since the slit 252 is formed in the female screw tube 240, the male screw 235 formed on the extrusion rod 230 can be pushed into the female screw tube 40 and fitted with one touch. In addition, when a further rotational load is applied at the ascending limit and descending limit of the decorative material C, the clutch mechanism that repeats the screw release and the screw return when the slit 252 is opened works.

  Therefore, the assembling property between the extrusion rod 230 on which the male screw 235 is formed and the female screw tube 240 is improved, and a strong screwing force between the male screw 235 and the female screw 243 can be obtained, and damage to the female screw tube 240 and other members can be prevented.

  The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

  The cosmetic material feeding container of the present invention can be used as a container for feeding and using a cosmetic material such as a rod-shaped cosmetic material.

DESCRIPTION OF SYMBOLS 1 Cosmetic material delivery container 2 Container main body 10 Lead cylinder 20 Base cylinder 23 Knurl 30 Extrusion rod 32 Bar shaft 33 Male screw 40 Female screw cylinder 43 Female screw 44 Vertical rib 46 Split groove 47 Cutting part 50 Stopper member

Claims (7)

A tip tube in which a tip opening hole is formed at the tip, and a decorative material is inserted;
A base tube rotatably assembled to the front tube;
An external thread is formed on the outer periphery, and an extrusion rod that advances and retreats by the relative rotation of the front tube and the base tube to advance the cosmetic material from the tip opening hole,
A female threading container provided with a female thread formed on an inner periphery thereof and engaged with the inner periphery of the base cylinder and rotated synchronously;
The female cylinder has a split groove formed thinner than the other part of the female cylinder, and is assembled to the extrusion rod in a state in which a part of the circumference of the split groove is broken to form a cut portion. A cosmetic material feeding container characterized by.   The female screw repeats screw release and screw return with the male screw by opening the cutting portion when a further rotational load is applied at the upper limit and the lower limit of the decorative material. The cosmetic material supply container according to claim 1. A plurality of vertical ribs projecting toward the inner periphery of the base cylinder are formed on the outer periphery of the female thread cylinder,
On the inner periphery of the base cylinder, a knurl is formed that allows the vertical ribs to engage and rotate synchronously with the female thread cylinder.
The cosmetic material feeding container according to claim 1, wherein at least one of the vertical ribs is provided so as to protrude from an outer periphery at a position facing the split groove. The female thread cylinder has a pair of the split grooves,
Each of the split grooves is split at the time of screwing with the extrusion rod, and the female screw cylinder is formed with a notch portion in which the gap between the split grooves is removed. Cosmetic material feeding container. A plurality of vertical ribs projecting toward the inner periphery of the base cylinder are formed on the outer periphery of the female thread cylinder,
On the inner periphery of the base cylinder, a knurl is formed that allows the vertical ribs to engage and rotate synchronously with the female thread cylinder.
The cosmetic material feeding container according to claim 4, wherein at least one of the vertical ribs protrudes from an outer periphery at a position facing the notch.   The makeup according to any one of claims 1 to 5, wherein the split groove is formed in a wedge shape from an outer periphery to an inner periphery of the female screw cylinder, and the cutting portion is formed at a tip thereof. Material feeding container.   The split groove is formed by connecting an annular portion of the female screw and a part of the inner periphery of the outer peripheral wall of the female screw tube in an annular shape, and the female screw thread and the female screw tube The cosmetic material supply container according to any one of claims 1 to 6, wherein the cut portion is formed by breaking a part of the inner periphery of the outer peripheral wall.

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