JP6088288B2 - Cartridge type cosmetic container - Google Patents

Description

  The present invention relates to a cartridge-type cosmetic container in which a cartridge body filled with a cosmetic is detachably mounted.

  2. Description of the Related Art Conventionally, a cartridge-type feeding container that allows cosmetics in a cartridge body to advance finely through a tip opening hole of the cartridge body has been used. Some cartridge-type feeding containers are not provided with a feeding mechanism in the cartridge body, and are provided with a feeding mechanism completely separated and independent from the cartridge body.

  In Patent Document 1, when the cartridge body is removed from the threaded portion of the front cylinder, the sliding shaft moves to the extension and retraction limit of the outer cylinder by a spring, so that a new cartridge body can be mounted. Is disclosed. In this container, when the cartridge body is attached, the sleeve having the tapered surface closes the chuck claw of the screw chuck, and the screw on the inner surface of the chuck claw and the screw of the sliding shaft are screwed together. When the cartridge body is removed, the sleeve is separated from the screw chuck by the restoring force of the spring between the sleeve and the chuck, and the chuck claw of the screw chuck that is restrained by the taper surface of the sleeve is expanded by its elasticity. Open. Thereby, the screwing of the screw on the inner surface of the chuck claw and the screw on the sliding shaft is released.

Japanese Utility Model Publication 3-49611

  However, in the container of Patent Document 1, the sleeve, the screw chuck, and the spring allow the sliding shaft to be moved to the withdrawal and retreat limit when the cartridge body is removed. In this container, since the chuck claw at the tip of the screw chuck is restrained by the taper surface of the sleeve and bent inward for a long time, the chuck claw may not be expanded only by its elasticity. For this reason, there is a possibility that the sliding shaft cannot be returned to the feeding and retracting limit without releasing the screw engagement between the screw on the inner surface of the chuck claw and the screw of the sliding shaft.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to improve the certainty of moving the push rod to the payback limit.

The present invention is a cartridge-type cosmetic container to which a cartridge body filled with a cosmetic is attached and used, the main body cylinder to which the cartridge body is detachably attached, coaxial with the main body cylinder, and A drive body provided so as to be relatively rotatable; a male screw formed on an outer periphery; a push rod which is fed out by relative rotation between the main body cylinder and the drive body to push out cosmetics in the cartridge body; and the cartridge body is the main body cylinder A plurality of pieces formed on the inner periphery of female screws that are screwed with the male screws while being attached to the plurality of pieces, and the plurality of pieces are separated from the push rod when the cartridge body is removed . a biasing member for biasing the frame member in the axial direction, provided in the main body tube, said plurality of opposite direction to the direction in which the biasing member biases the plurality of pieces body Piece body and abuts, characterized in that it comprises a spacing guide portion for guiding said plurality of pieces body away from the push rod by the biasing force of the biasing member.

In the present invention, when the cartridge body is removed from the main body cylinder, the plurality of pieces are separated from the push rod while being guided by the separation guide portion by the urging force of the urging member. Therefore, when the frame body itself moves, the screw engagement between the male screw formed on the push rod and the female screw formed on the frame body is released. Therefore, it is possible to improve the certainty of moving the push rod to the payback limit.

It is sectional drawing of the front of the cartridge type cosmetics container which concerns on embodiment of this invention. It is a figure which shows the cartridge body attached to a cartridge type cosmetics container, (a) is sectional drawing of the front of a cap, (b) is a front view of a cartridge outer cylinder, (c) is a front view of a holding member. It is. (A) is sectional drawing of the front of a main body outer cylinder, (b) is a top view in Fig.3 (a), (c) is sectional drawing of the side surface of Fig.3 (a). (A) is a front view of a drive body, (b) is sectional drawing of the front of a drive body, (c) is AA sectional drawing in FIG.4 (b). (A) is a front view of a push rod, (b) is a bottom view in FIG. 5 (a), (c) is a cross-sectional view of the front of the push rod, and (d) is a side view of the push rod. It is a figure and (e) is sectional drawing of the side surface of a push rod. (A) is a front view of the main body inner cylinder, (b) is a side view of the main body inner cylinder, (c) is a sectional view of the front surface of the main body inner cylinder, and (d) is a main body It is sectional drawing of the side surface of an inner cylinder, (e) is a bottom view in Fig.6 (a), (f) is BB sectional drawing in FIG.6 (d). (A) is a front view of the frame, (b) is a plan view in FIG. 7 (a), (c) is a bottom view in FIG. 7 (a), (d) It is a side view of a frame, (e) is a sectional view of the side of a frame. It is sectional drawing of the front of a cartridge type cosmetics container, and is a figure which shows the state which a push rod is located in a payout raising limit. It is sectional drawing of the front of a cartridge type cosmetics container, and is a figure which shows the state from which the cartridge body was removed.

  Hereinafter, a cartridge type cosmetic container 1 according to an embodiment of the present invention will be described with reference to the drawings.

  The cartridge type cosmetic container 1 is used with a cartridge body 2 filled with the cosmetic A attached thereto. As shown in FIG. 1, the cartridge-type cosmetic container 1 includes a main body cylinder 20 to which the cartridge body 2 is detachably attached, a drive body 30 that is coaxially attached to the main body cylinder 20 and is relatively rotatable. In the state where the external thread 61a is formed on the outer periphery, the push rod 60 is pushed out by the relative rotation of the main body cylinder 20 and the drive body 30 to push out the cosmetic A in the cartridge body 2, and the cartridge body 2 is attached to the main body cylinder 20. A plurality of pieces 50 are formed on the inner periphery of a female screw 53 that is screwed into the male screw 61a. The main body cylinder 20 includes a main body outer cylinder 21 to which the drive body 30 is attached so as to be relatively rotatable, and a main body inner cylinder 40 inserted into the inner periphery of the main body outer cylinder 21.

  The cartridge-type cosmetic container 1 includes a coil spring 4 as a biasing member that biases the plurality of pieces 50 away from the push rod 60 when the cartridge body 2 is removed, and the cartridge body 2 includes a main body cylinder. And a coil spring 5 as a return spring that pushes back the push bar 60 toward the retreating limit when it is removed from the coil 20. The parts for feeding the cosmetic A are not provided in the cartridge body 2 but are collected in the cartridge-type cosmetic container 1.

  First, with reference to FIG.1 and FIG.2, the cartridge body 2 attached to the cartridge type cosmetic container 1 is demonstrated.

  The cartridge body 2 is screwed to the main body cylinder 20. The cartridge body 2 includes a cartridge outer cylinder 10 in which cosmetic A is filled, a holding member 70 that can slide in the cartridge outer cylinder 10 in the axial direction, and a cap 3 attached to the cartridge outer cylinder 10. .

  As shown in FIG. 2B, the cartridge outer cylinder 10 has a main body when the cosmetic holding part 12 in which the front end opening hole 11 is formed and the rear end opening hole 17 is formed and attached to the main body cylinder 20. It has the insertion part 19 inserted in the pipe | tube 20, and the flange 14 provided between the cosmetics holding | maintenance part 12 and the insertion part 19 and projecting to an outer periphery.

  The cosmetic material holding part 12 is formed in a cylindrical shape. A cosmetic material A is filled in the inner periphery of the cosmetic material holding portion 12. A circular fitting protrusion 13 is formed on the outer periphery of the cosmetic material holding portion 12. The fitting projection 13 is for locking the cap 3 in the axial direction when the cap 3 is attached.

  The fitting part 19 is formed in a cylindrical shape. The inner periphery of the insertion part 19 is formed continuously with the inner periphery of the cosmetic material holding part 12. A male screw 15 is formed in the axial direction from the flange 14 on the outer periphery of the fitting portion 19. The male screw 15 is screwed into the main body cylinder 20. An O-ring groove 16 to which the O-ring 6 (see FIG. 1) is attached is formed between the male screw 15 on the outer periphery of the fitting portion 19 and the rear end surface 18.

  When the flange 14 is attached to the main body cylinder 20, the flange 14 abuts against the end portion of the main body cylinder 20 to define the relative position in the axial direction. Further, when the cap 3 is attached, the flange 14 abuts against the end portion of the cap 3 and defines the relative position in the axial direction.

  The holding member 70 is inserted into the inner periphery of a through hole that penetrates the cartridge body 2 in the axial direction. The holding member 70 is located at the rear end of the cosmetic A. As shown in FIG. 2C, the holding member 70 protrudes in a substantially cylindrical shape from a top surface 71 that comes into contact with the cosmetic A and a lower end surface 73 that is formed on the opposite side of the top surface 71 to push bar 60. And an abutting portion 72 that abuts. The holding member 70 does not hold the cosmetic A, but prevents leakage of the filled cosmetic A, and causes the cosmetic A to protrude from the tip opening hole 11 by the movement of the push rod 60.

  On the inner periphery of the cartridge outer cylinder 10, as shown in FIG. 1, an annular step portion 12 a that protrudes from the portion filled with the cosmetic A to the inner periphery is formed. The cosmetic A is filled from the tip opening hole 11 in a state where the holding member 70 is inserted into the cartridge outer cylinder 10 and the lower end surface 73 of the holding member 70 is in contact with the stepped portion 12a. The filled cosmetic A is filled in a heated state and becomes a rod shape when cooled.

  Note that the stepped portion 12 a need not be formed on the inner periphery of the cartridge outer cylinder 10. In this case, the cosmetic A can be filled from the rear end opening hole 17, and the holding member 70 can be inserted thereafter.

  As shown in FIG. 2A, the cap 3 is formed in a bottomed cylindrical shape. The cap 3 is attached to the cosmetic material holding part 12 of the cartridge outer cylinder 10 and closes the tip opening hole 11. On the inner periphery of the opening end of the cap 3, an annular fitting recess 3 a that fits into the fitting protrusion 13 of the cartridge outer cylinder 10 is formed.

  The cartridge body 2 configured as described above is configured such that the cap 3 is attached to the cartridge outer cylinder 10 in which the holding member 70 is inserted and the cosmetic material A is filled, and the distal end opening hole 11 is closed, so that the cosmetic material A Can be sold as a single cartridge. Moreover, you may sell as the cartridge type cosmetic container 1 provided with the cartridge body 2 in the state which attached the cartridge body 2 to the cartridge type cosmetic container 1.

  Next, with reference to FIGS. 3 to 7, each component constituting the cartridge type cosmetic container 1 will be described.

  As shown in FIGS. 3A to 3C, the main body outer cylinder 21 is formed in a cylindrical shape. The main body outer cylinder 21 has a front end opening hole 21 a into which the main body inner cylinder 40 is inserted, and a rear end opening hole 29 into which the insertion portion 31 of the driving body 30 is inserted. The main body outer cylinder 21 has an annular fitting recess 22 that fits with the main body inner cylinder 40 on the inner periphery in the vicinity of the tip opening hole 21a. The main body outer cylinder 21 has an annular fitting recess 28 which is fitted to the drive body 30 so as to be rotatable relative to the inner periphery in the vicinity of the rear end opening hole 29.

  The main body outer cylinder 21 includes a pair of longitudinal ribs 23 extending in the axial direction so as to face the inner periphery thereof, a proximity guide portion 25 formed on the inner periphery substantially in the center in the axial direction, A cylindrical portion 26 formed in a cylindrical shape on the inner periphery and an annular annular plate portion 27 protruding from the inner periphery of the cylindrical portion 26 are provided.

  The vertical ribs 23 guide the frame 50 so that it cannot rotate when the frame 50 is attached to the main body cylinder 20. The vertical ribs 23 engage with groove portions 45 described later of the main body inner cylinder 40. Thereby, the relative rotation of the main body outer cylinder 21 and the main body inner cylinder 40 becomes impossible.

  A pair of proximity guide portions 25 are provided to face the inner periphery of the main body outer cylinder 21. The proximity guide portion 25 is formed in a substantially semicircular shape along the inner periphery of the main body outer cylinder 21. When the cartridge body 2 is attached, the proximity guide unit 25 guides the piece body 50 that moves in the axial direction while compressing and contracting the coil spring 4 so as to be close to the push bar 60. The proximity guide portion 25 has a slide surface 25 a that guides the piece body 50 so as to be close to the push rod 60 while abutting against a later-described blade portion 55 of the piece body 50.

  The slide surface 25a is formed to be inclined so as to be separated from the tip opening hole 21a from the outer periphery toward the inner periphery.

  The proximity guide portion 25 includes a longitudinal rib 24 that extends in the axial direction from the slide surface 25 a and engages with the frame body 50. The vertical rib 24 defines the circumferential position of the frame body 50 with respect to the main body outer cylinder 21. An inclined portion 24 a that is inclined so as to be parallel to the proximity guide portion 25 is provided at the free end of the vertical rib 24.

  The cylindrical portion 26 is formed so that the base end thereof is flush with the slide surface 25 a of the proximity guide portion 25. A fitting portion 31 of the driving body 30 is fitted on the outer periphery of the cylindrical portion 26. The inner periphery of the cylindrical portion 26 is partitioned by the annular plate portion 27 into a coil spring holding portion 27 a that holds the coil spring 4 and a coil spring holding portion 27 b that holds the coil spring 5.

  A through hole 26 a is formed in the inner periphery of the annular plate portion 27 so that the push rod 60 can be inserted and retracted. A cylindrical push rod guide portion 26 b that guides the push rod 60 so as to be coaxial with the main body cylinder 20 extends in the through hole 26 a in the axial direction.

  As shown in FIGS. 4A to 4C, the driving body 30 is formed in a bottomed cylindrical shape. The driving body 30 is inserted into the main body outer cylinder 21, a knob 32 formed continuously with the fitting 31 and used by a user, and formed on the inner periphery and is not rotatable relative to the push rod 60. And a plurality of vertical ribs 35 that engage with each other, and a column 36 that holds the push bar 60 when the cartridge type cosmetic container 1 is assembled.

  The fitting part 31 is formed in a cylindrical shape. On the outer periphery in the vicinity of the base end of the fitting portion 31, a fitting convex portion 34 that fits into the fitting concave portion 28 of the main body outer cylinder 21 is provided in a ring shape. An annular O-ring groove 33 is recessed in the outer periphery of the fitting portion 31. By inserting the O-ring 7 (see FIG. 1) into the O-ring groove 33, an appropriate resistance can be given to the relative rotation between the main body outer cylinder 21 and the driving body 30, and the operational feeling by the user is improved. it can.

  The knob portion 32 is formed with a larger diameter than the fitting portion 31. The knob portion 32 is formed to have substantially the same diameter as the outer diameter of the main body outer cylinder 21. Thereby, when the driving body 30 is assembled to the main body outer cylinder 21, the outer peripheral surface of the main body outer cylinder 21 and the outer peripheral surface of the knob 32 are substantially flush.

  The vertical rib 35 extends in the axial direction from the bottom surface 37 of the inner periphery. The vertical rib 35 engages with a guide groove 63a of a large-diameter portion 63 (described later) of the push rod 60. In the present embodiment, eight vertical ribs 35 are provided as shown in FIG.

  The support column 36 protrudes from the inner peripheral bottom surface 37 in the axial direction. The support column 36 is formed in a substantially cylindrical shape. The tip of the support column 36 is formed by rounding into a hemispherical shape so that it can be easily inserted into a cavity 65 described later of the push rod 60.

  As shown in FIGS. 5A to 5E, the push rod 60 is formed in a substantially cylindrical shape. The push rod 60 is accommodated on the inner periphery of the main body cylinder 20 and the driving body 30. The push rod 60 includes a rod shaft 61 provided coaxially with the main body cylinder 20 and the drive body 30, a cavity portion 62 provided at one end of the rod shaft 61, a large diameter portion 63 provided at the other end of the rod shaft 61, It has a cavity 65 that is recessed from the diameter 63 in the axial direction, and a buffer 64 that is attached to the large diameter 63.

  A male screw 61 a is formed on the outer periphery of the rod shaft 61. The cosmetic A filled in the cartridge body 2 is used by being extruded by a minute amount. Therefore, the pitch of the male screw 61a is set to a pitch at which the push rod 60 can be finely moved.

  A female screw 53, which will be described later, of the frame body 50 can be screwed into the male screw 61a. The stroke of the push rod 60 is determined by the axial length of the male screw 61a.

  The cavity 62 is recessed in the axial direction from one end of the push rod 60. A contact portion 72 of the holding member 70 of the cartridge body 2 is inserted into the cavity portion 62. Accordingly, when the push rod 60 moves in the axial direction, the cavity 62 presses the holding member 70, and the cosmetic A in the cartridge body 2 is pushed out from the tip opening hole 11.

  The large diameter portion 63 is formed in a disk shape having a large diameter as compared with the rod shaft 61. The large diameter portion 63 moves in the driving body 30 in the axial direction. The large-diameter portion 63 defines the extension / retraction limit of the push rod 60 when it comes into contact with the bottom surface 37 of the drive body 30 via the buffer portion 64.

  On the outer periphery of the large-diameter portion 63, a plurality of guide grooves 63a that engage with the vertical ribs 35 of the driving body 30 are recessed in the radial direction. Since the guide groove 63a engages with the vertical rib 35, relative rotation between the push rod 60 and the driving body 30 becomes impossible. Therefore, when the user picks and rotates the driving body 30, the push rod 60 also rotates in synchronization.

  The push bar 60 is intended to advance the cosmetics A in the cartridge body 2 finely. Therefore, in the present embodiment, the advanced cosmetic A cannot be pulled back into the cartridge body 2 even if the push bar 60 is retracted during use.

  The cavity portion 65 is formed in a shape corresponding to the support column 36 of the drive body 30. The cavity 65 is formed longer than the length of the support column 36. Thereby, it is possible to insert the support column 36 into the cavity portion 65 when the cartridge type cosmetic container 1 is assembled.

  The buffer portion 64 is attached to the rear end surface of the large diameter portion 63. The buffer part 64 buffers the impact force generated when the push bar 60 comes into contact with the bottom surface 37 of the drive body 30 when the push bar 60 returns to the extended retreat limit. The buffer portion 64 is formed of a material that can absorb an impact by an elastic force such as rubber or resin.

  As shown in FIGS. 6A to 6F, the main body inner tube 40 is formed in a cylindrical shape. The internal cylinder 40 includes a front end opening hole 41 to which the cartridge body 2 is attached, a female screw 43 formed in the axial direction from the front end opening hole 41, a pair of grooves 45 recessed in the axial direction on the outer periphery, And a separation guide portion 44 formed at the end portion 46. The main body cylinder 40 has an annular fitting convex part 42 that fits with the fitting concave part 22 of the main body outer cylinder 21 on the outer periphery in the vicinity of the tip opening hole 41.

  The female screw 43 is formed corresponding to the male screw 15 formed in the fitting portion 19 of the cartridge body 2. The cartridge body 2 is screwed to the female screw 43.

  The groove 45 extends in the axial direction from the rear end 46. The groove 45 is formed at a position corresponding to the vertical rib 23 of the main body outer cylinder 21 and engages with the vertical rib 23. Thereby, the relative rotation of the main body outer cylinder 21 and the main body inner cylinder 40 becomes impossible.

  The separation guide portion 44 is formed at a position corresponding to the proximity guide portion 25 of the main body outer cylinder 21. The separation guide part 44 is formed in parallel with the proximity guide part 25 with a predetermined gap between the proximity guide part 25 (see FIG. 1). This gap is formed in such a size that a blade portion 55 (to be described later) of the piece 50 can be inserted.

  The separation guide portion 44 guides the piece body 50 that moves in the axial direction by the urging force of the coil spring 4 so as to separate from the push rod 60 when the cartridge body 2 is removed. The separation guide portion 44 has a slide surface 44 a that guides the piece 50 away from the push rod 60 while being in contact with the blade portion 55.

  The slide surface 44a is formed to be inclined so as to be separated from the tip opening hole 41 from the outer periphery toward the inner periphery.

  As shown in FIGS. 7A to 7E, the frame body 50 has a main body portion 51 formed so that the cross-sectional shape is substantially semicircular, and a main body cylinder 20 formed continuously from the main body portion 51. A blade portion 55 that expands toward the inner peripheral surface, a slit 54 that is formed in the blade portion 55 and engages with the vertical rib 24 of the main body outer cylinder 21, and a female screw that is formed on the surface of the main body portion 51 that faces the push rod 60. 53 and a coil spring holding portion 56 that is recessed in the inner periphery of the blade portion 55.

  A pair of frame bodies 50 are provided to face the inner periphery of the main body outer cylinder 21. Each piece 50 is provided independently. The frame body 50 is provided so as to face each other with the pair of vertical ribs 23 between them when the cartridge type cosmetic container 1 is assembled. Thereby, the frame body 50 is guided in the axial direction by the vertical ribs 23 of the main body outer cylinder 21.

  When the cartridge body 2 is attached, the frame body 50 approaches the push bar 60 while compressing and contracting the coil spring 4. On the other hand, the piece 50 is separated from the push rod 60 by the biasing force of the coil spring 4 when the cartridge body 2 is removed.

  The rear end surface 18 of the cartridge outer cylinder 10 abuts on the front end 51a of the main body 51. Thereby, when the cartridge body 2 is attached to the cartridge type cosmetic container 1, the main body 51 is pushed in the axial direction.

  The blade portion 55 is inserted between the proximity guide portion 25 of the main body outer cylinder 21 and the separation guide portion 44 of the main body inner cylinder 40 (see FIG. 1). The blade portion 55 includes a front end surface 55a that contacts the slide surface 44a of the separation guide portion 44 when the cartridge body 2 is removed, and a rear end surface that contacts the slide surface 25a of the proximity guide portion 25 when the cartridge body 2 is attached. 55b.

  The front end surface 55a and the rear end surface 55b are formed to be inclined so as to approach the cartridge body 2 from the inner periphery toward the outer periphery. The rear end surface 55b is formed in parallel with the front end surface 55a.

  The slit 54 is formed in the axial direction from the rear end surface 55b. The slit 54 engages with the vertical rib 24 of the main body outer cylinder 21 to define the circumferential position of the frame body 50 with respect to the main body cylinder 20. The slit 54 is longer than the longitudinal rib 24 in the axial direction.

  The female screw 53 is engaged with the male screw 61 a of the push rod 60 when the frame body 50 is guided by the proximity guide portion 25 and comes into contact with the push rod 60. Therefore, the female screw 53 is screwed with the male screw 61a when the cartridge body 2 is attached. On the other hand, when the cartridge body 2 is removed, the frame body 50 is separated from the push rod 60 by being guided by the separation guide portion 44. Therefore, the female screw 53 is not screwed with the male screw 61a when the cartridge body 2 is removed.

  The coil spring holding portion 56 is recessed in the axial direction from the rear end surface of the blade portion 55. One end of the coil spring 4 abuts on the coil spring holding portion 56.

  As shown in FIG. 1, the coil spring 4 is accommodated between the coil spring holding portion 27 a of the main body outer cylinder 21 and the coil spring holding portion 56 of the frame body 50. The coil spring 4 is formed so that its inner diameter is larger than that of the rod shaft 61 of the push rod 60. The coil spring 4 is formed so that its outer diameter is smaller than the inner diameter of the cylindrical portion 26 of the main body outer cylinder 21. The coil spring 4 biases the plurality of pieces 50 toward the cartridge body 2.

  The coil spring 5 is accommodated between the coil spring holding portion 27 b of the main body outer cylinder 21 and the large diameter portion 63 of the push rod 60. The coil spring 5 is formed so that its inner diameter is larger than that of the rod shaft 61 of the push rod 60. The coil spring 5 is formed such that its outer diameter is smaller than the inner diameter of the cylindrical portion 26 of the main body outer cylinder 21. The coil spring 5 biases the large diameter portion 63 of the push rod 60 toward the bottom surface 37 of the drive body 30.

  Next, the assembly procedure of the cartridge type cosmetic container 1 will be described.

  First, the coil spring 4 is inserted from the tip opening hole 21 a of the main body outer cylinder 21. And a pair of piece 50 is inserted from the front-end | tip opening hole 21a of the main body outer cylinder 21. FIG. At this time, the pair of pieces 50 are inserted so as to face each other with the pair of vertical ribs 23 interposed therebetween. In this state, since the coil spring 4 is compressed and not contracted, the pair of pieces 50 is only placed on the end of the coil spring 4.

  Then, the main body inner cylinder 40 is inserted from the tip opening hole 21 a of the main body outer cylinder 21. At this time, the main body inner cylinder 40 is inserted so that the groove 45 engages with the vertical ribs 23 of the main body outer cylinder 21. When the main body cylinder 40 is inserted, the front end surface 55 a of the frame body 50 is pushed by the separation guide portion 44 of the main body inner cylinder 40. Thereby, the piece body 50 moves in the axial direction, and the coil spring 4 is compressed and contracted.

  When the main body cylinder 40 is further inserted into the main body outer cylinder 21, the fitting convex part 42 of the main body inner cylinder 40 is fitted into the fitting concave part 22 of the main body outer cylinder 21. At the same time, the vertical ribs 24 of the main body outer cylinder 21 engage with the slits 54 of the frame body 50.

  The vertical rib 23 is formed to have a length that guides the frame 50 until the slit 54 of the frame 50 engages with the vertical rib 24 of the main body outer cylinder 21. Therefore, in the assembly of the cartridge type cosmetic container 1, the frame body 50 is not displaced in the circumferential direction, and the frame body 50 can be stably assembled.

  Next, the push rod 60 is inserted into the inner periphery of the drive body 30. At this time, the support post 36 of the driving body 30 is inserted into the cavity 65 of the push rod 60. Thereby, the coaxiality of the drive body 30 and the push rod 60 can be maintained. Then, the coil spring 5 is inserted into the inner periphery of the drive body 30.

  When the above preparation is completed, the drive body 30 is attached to the main body outer cylinder 21. Specifically, the insertion portion 31 of the driving body 30 is inserted into the inner periphery from the rear end opening hole 29 of the main body outer cylinder 21. At this time, the push rod 60 is inserted through the through hole 26a of the push rod guide portion 26b of the main body outer cylinder 21 so that the coil spring 5 is inserted into the coil spring holding portion 27b. The push rod 60 is easily inserted into the push rod guide portion 26b because the coaxiality with the main body outer cylinder 21 is maintained by the column 36 of the driving body 30.

  When the driving body 30 is further inserted into the main body outer cylinder 21, the coil spring 5 is compressed and contracted, and the fitting convex part 34 of the driving body 30 is fitted into the fitting concave part 28 of the main body outer cylinder 21. The cartridge type cosmetic container 1 is assembled by the above procedure.

  In this state, since the cartridge body 2 is not attached, the internal thread 53 of the frame body 50 and the external thread 61a of the push bar 60 are not yet screwed together.

  Next, the operation of the cartridge-type cosmetic container 1 will be described mainly with reference to FIG. 1, FIG. 8, and FIG.

  First, the user attaches the cartridge body 2 to the main body cylinder 20 as shown in FIG. Specifically, the fitting portion 19 of the cartridge body 2 is inserted into the inner periphery of the main body inner cylinder 40 and the male screw 15 and the female screw 43 are screwed together. Thereby, the cartridge body 2 is screwed to the main body cylinder 20.

  At this time, the pair of pieces 50 is pushed by the rear end face 18 of the cartridge body 2 and moves in the axial direction. The frame body 50 moves so as to be close to the push rod 60 while sliding the slide surface 25a because the rear end surface 55b is in contact with the proximity guide portion 25 of the main body outer cylinder 21. Therefore, simply by attaching the cartridge body 2 to the main body cylinder 20, the internal thread 53 of the frame body 50 and the external thread 61a of the push bar 60 can be easily screwed together.

  When the female screw 53 and the male screw 61a are screwed together, the movement can be absorbed by the elastic force of the buffer portion 64 even if the push rod 60 is pushed and retracted toward the extended retreat limit.

  From this state, when the user removes the cap 3 and rotates the driving body 30 with respect to the main body cylinder 20, the push rod 60 moves forward by screwing of the female screw 53 and the male screw 61 a. Thus, the cosmetic A can be used by advancing from the front end opening hole 11 of the cartridge outer cylinder 10.

  When the user continues to rotate the driving body 30 further with respect to the main body cylinder 20, as shown in FIG. At this time, the push rod 60 is separated from the support column 36 of the driving body 30, but the push rod 60 is guided by the push rod guide portion 26 b, and thus it is prevented from shaking in the radial direction.

  The forward advance limit of the push rod 60 is defined by the stroke end of the male screw 61 a formed on the rod shaft 61 of the push rod 60. Even if the user further rotates the driving body 30 with respect to the main body cylinder 20 from the state shown in FIG. 8, the push rod 60 runs idle and does not make any further strokes.

  At this time, in the cartridge body 2, the holding member 70 has moved to the forward end. Therefore, most of the cosmetic A is pushed out from the tip opening hole 11, and the cosmetic A needs to be replaced.

  In the state shown in FIG. 8, when the cartridge body 2 is rotated with respect to the main body cylinder 20 to remove the cartridge body 2 from the main body cylinder 20, the cartridge body 2 is separated from the main body cylinder 20. Thereby, as shown in FIG. 9, the pair of pieces 50 moves in the axial direction by the urging force of the coil spring 4. Since the front end surface 55a is in contact with the separation guide portion 44 of the main body inner cylinder 40, the piece 50 moves away from the push rod 60 while sliding on the slide surface 44a. Therefore, the screwing of the female screw 53 of the frame body 50 and the male screw 61a of the push rod 60 is released. Therefore, the push bar 60 can move freely in the axial direction, and moves to the extended retreat limit by the urging force of the coil spring 5.

  As described above, when the cartridge body 2 is removed from the main body cylinder 20, the piece body 50 is separated from the push rod 60 by the urging force of the coil spring 4. Therefore, when the piece 50 itself moves, the male screw 61a formed on the push rod 60 and the female screw 53 formed on the piece 50 are released. Therefore, it is possible to improve the certainty of moving the push rod 60 to the payback limit.

  When the used cartridge body 2 is removed from the main body outer cylinder 21 and then a new cartridge body 2 is attached, the state shown in FIG. 1 is obtained again.

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

  When the cartridge body 2 is removed from the main body cylinder 20, the piece body 50 is separated from the push rod 60 by the biasing force of the coil spring 4. Therefore, when the piece 50 itself moves, the male screw 61a formed on the push rod 60 and the female screw 53 formed on the piece 50 are released. Therefore, it is possible to improve the certainty of moving the push rod 60 to the payback limit.

  On the other hand, when the cartridge body 2 is attached to the main body cylinder 20, the pair of pieces 50 are pushed by the rear end surface 18 of the cartridge body 2 and moved in the axial direction. The frame body 50 moves so as to be close to the push rod 60 because the rear end surface 55 b is in contact with the proximity guide portion 25 of the main body outer cylinder 21. Therefore, simply by attaching the cartridge body 2 to the main body cylinder 20, the internal thread 53 of the frame body 50 and the external thread 61a of the push bar 60 can be easily screwed together.

  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.

  For example, in the above embodiment, the piece body 50 moves in the axial direction and slides in the radial direction when the cartridge body 2 is attached and removed. However, for example, instead of the coil spring 4, a plate spring that separates the pieces 50 in the radial direction may be provided so that the pieces 50 slide only in the radial direction without moving in the axial direction. In this case, it is necessary to form a tapered surface in the axial direction of the frame body 50 so that the frame body 50 moves toward the push rod 60 when the cartridge body 2 is attached.

  In the above embodiment, the female screw 53 is formed on both the pair of pieces 50. Not only this but the internal thread 53 may be formed only in one piece 50. Since the piece 50 should just be plural, it is not restricted to a pair. The frame 50 has a substantially semicircular cross-sectional shape, but is not limited to this shape as long as it can be inserted into the main body outer cylinder 21.

DESCRIPTION OF SYMBOLS 1 Cartridge type cosmetic container 2 Cartridge body 4 Coil spring (biasing member)
5 Coil spring (return spring)
DESCRIPTION OF SYMBOLS 10 Cartridge outer cylinder 20 Main body cylinder 21 Main body outer cylinder 23 Vertical rib 25 Proximity guide part 25a Slide surface 30 Driver 40 Main body cylinder 44 Separation guide part 44a Slide surface 50 Frame 53 Female screw 55 Blade part 60 Push rod 61a Male screw

Claims (11)

A cartridge-type cosmetic container used by attaching a cartridge body filled with a cosmetic,
A main body cylinder to which the cartridge body is detachably attached;
A drive body provided coaxially with the main body cylinder and relatively rotatable;
A male bar is formed on the outer periphery, and a push bar that is fed out by relative rotation between the main body cylinder and the driving body to push out cosmetics in the cartridge body,
A plurality of pieces in which an internal thread is formed on an inner periphery of the internal thread to be engaged with the external thread in a state where the cartridge body is attached to the main body cylinder;
A biasing member which the plurality of pieces body biasing the plurality of pieces body so as to be separated from the push rod in the axial direction when the cartridge body is removed,
Provided in the main body cylinder, the urging member abuts against the plurality of pieces from a direction opposite to the direction in which the plurality of pieces are urged, and is separated from the push rod by the urging force of the urging member. A cartridge-type cosmetic container, comprising: a separation guide portion that guides the plurality of pieces. When the cartridge body is attached, the plurality of pieces are close to the push rod while contracting the biasing member,
The cartridge-type cosmetic container according to claim 1, wherein the main body cylinder includes a proximity guide portion that guides the plurality of pieces adjacent to the push rod. The plurality of pieces have blade portions that expand toward the inner peripheral surface of the main body cylinder,
The cartridge-type cosmetic container according to claim 2, wherein the separation guide portion has a slide surface that guides the plurality of pieces so as to be separated from the push rod while being in contact with the blade portion. The cartridge-type cosmetic container according to claim 3, wherein the proximity guide portion has a slide surface that guides the plurality of pieces so as to be close to the push rod while being in contact with the blade portion. The biasing member biases the plurality of pieces toward the cartridge body,
The separation guide portion guides the plurality of pieces moving in the axial direction by an urging force of the urging member so as to be separated from the push rod when the cartridge body is removed. The cartridge type cosmetic container according to any one of 2 to 4. The proximity guide portion guides the plurality of pieces moving in the axial direction while contracting the biasing member so as to be close to the push rod when the cartridge body is attached. 5. The cartridge type cosmetic container according to 5. The main body cylinder is
A main body outer cylinder to which the driving body is attached so as to be relatively rotatable;
The cartridge type according to any one of claims 2 to 6, further comprising: a main body inner cylinder inserted into an inner periphery of the main body outer cylinder and having the separation guide portion formed at an end thereof. Cosmetic container.   The cartridge type cosmetic container according to claim 7, wherein the proximity guide portion is formed on an inner periphery of the main body outer cylinder. The main body outer cylinder has a pair of vertical ribs extending in the axial direction so as to face the inner periphery thereof,
The cartridge-type cosmetic container according to claim 7 or 8, wherein the main body inner cylinder has a pair of grooves that engage with the vertical ribs and cannot rotate relative to the main body outer cylinder. The cartridge type cosmetic container according to claim 9, wherein the vertical rib guides the plurality of pieces to be non-rotatable when attached to the main body cylinder.   The cartridge-type cosmetic according to any one of claims 1 to 10, further comprising a return spring that pushes back the push bar toward the withdrawal and retreat limit when the cartridge body is removed from the main body cylinder. container.