JP4537338B2 - Stick cosmetic cartridge - Google Patents

Description

  The present invention relates to a bar-shaped cosmetic cartridge that allows the bar-shaped cosmetic to appear and disappear from the cartridge.

Conventionally, a stick-shaped cosmetic cartridge for feeding a stick-shaped cosmetic is mounted on one end side of a pencil cylinder which is a cylindrical container, and another stick-shaped cosmetic cartridge or an applicator is provided on the other end side, for example. A stick-shaped cosmetic material delivery container that is worn and used for diversifying purposes is known (see, for example, Patent Document 1). The bar-shaped cosmetic cartridge constituting the bar-shaped cosmetic feed-out container has a core chuck shaft that holds a rear end portion of the bar-shaped cosmetic material at its front end portion and has a protruding portion as a male screw at the rear end portion thereof, A spiral cylinder having a spiral groove into which the protrusion of the core chuck shaft is screwed, and a core chuck shaft that is non-rotatable and slidable in the axial direction on the front side, and a spiral cylinder that is rotatable on the rear side and axial direction The rod-shaped cosmetic cartridge is mounted so as to be rotatable and detachable (or non-detachable) with respect to the pencil cylinder, and this attachment causes the axial direction in the pencil cylinder to be included. A crest portion of an engaging portion provided at a substantially central portion of the rod-shaped cosmetic cartridge is engaged with an elastic protrusion provided at a rear end portion of the spiral tube in the rotation direction. The rotation of the pencil cylinder is applied from the rear side so that the pencil cylinder and the cartridge cylinder are relatively rotated. When the pencil cylinder and the cartridge cylinder are rotated relative to each other, the spiral cylinder and the cartridge cylinder rotate relative to each other. In addition, the core chuck shaft advances and retreats, and the bar-shaped cosmetic material protrudes and retracts from the tip of the cartridge cylinder by the rotation prevention mechanism constituted by the cartridge cylinder, the protrusion of the core chuck axis, and the screw groove mechanism of the spiral cylinder. It is said that.
Noto 3030037 gazette

  By the way, in recent years, there is a demand for higher quality for the above-mentioned bar-shaped cosmetic cartridge. For example, even if the bar-shaped cosmetic feeding container is dropped and an impact or vibration is applied, the bar-shaped cosmetic is pulled out or broken. Adoption of a mechanism that prevents this is required.

  The present invention was made in order to solve such problems, and without losing its feeding function as compared with the prior art, preventing the stick-shaped cosmetic material from slipping out or breaking due to the action of impact or vibration, and quality. An object of the present invention is to provide a stick-shaped cosmetic cartridge having an improved height.

  The bar-shaped cosmetic cartridge according to the present invention includes a screw rod that supports a rear end portion of the bar-shaped cosmetic and has a male screw on the outside, a female screw into which the male screw is screwed, and a rotational force applied from the rear side. An inner cylinder which is made possible, and an outer cylinder which accommodates a screw rod in a non-rotatable and axially slidable manner on its front side and an inner cylinder on its rear side. A rod-shaped cosmetic cartridge in which the rod-shaped cosmetic advances and retreats when it is rotated relative to the tip of the outer cylinder, and the inner cylinder has a protrusion projecting outward on its outer peripheral surface. A step portion that accommodates the protrusion of the inner cylinder so as to be relatively rotatable and movable in the axial direction, and protrudes inwardly in the outer cylinder to prevent the protrusion of the inner cylinder from moving further to the rear side; And an urging unit having an urging force that prevents the inner cylinder from moving forward.

  According to such a bar-shaped cosmetic cartridge, the protrusion of the inner cylinder is accommodated in the outer cylinder so as to be relatively rotatable and axially movable, and the outer cylinder has a step of the outer cylinder protruding inward. And a biasing means having a biasing force that prevents the inner cylinder from moving forward is provided in the outer cylinder. . As a result, the rearward movement of the inner cylinder is prevented and the forward movement is prevented, so that a rotational force can be reliably applied to the inner cylinder from the rear side. In addition, the male screw of a screw rod that supports the rear end portion of the bar-shaped cosmetic material and has a male screw on the outside is screwed into the female screw inside the inner cylinder. Therefore, when the outer cylinder and the inner cylinder are rotated relative to each other, the rotation prevention mechanism constituted by the inside of the front side of the outer cylinder and the screw rod, the male screw of the screw rod, and the screw engagement mechanism constituted by the female screw of the inner cylinder. When the threaded rod smoothly advances and retracts and the bar-shaped cosmetics are projected and retracted well from the tip of the outer cylinder, while the impact and vibration are applied to the bar-shaped cosmetic feeding container equipped with the bar-shaped cosmetic cartridge, the inner cylinder Advancing against the urging force of the urging means with a screw rod that is screwed into the cylinder, and the shock and vibration are absorbed by the buffering action of the advancing and urging means, so that the bar-shaped cosmetic material comes out of the screw rod. And breakage is prevented. Further, when there is no impact or vibration, the inner cylinder and the screw rod are returned toward their original positions by the biasing force of the biasing means.

  Here, the biasing means is a coil spring, and includes a stopper that prevents the inner cylinder from advancing before the inner cylinder moves forward against the biasing force of the coil spring and the coil spring prevents further advancement of the inner cylinder. It is preferable. When such a configuration is adopted, when an impact or vibration is applied to the stick-shaped cosmetic supply container equipped with the stick-shaped cosmetic cartridge, further advancement of the inner cylinder is not blocked by the coil spring but by the stopper. Therefore, the occurrence of problems such as entanglement of the coil spring is prevented.

  By the way, when the outer cylinder is injection-molded using a resin, a core pin (inner mold) having an outer peripheral surface having a shape corresponding to the inner peripheral surface of the outer cylinder and a shape corresponding to the outer peripheral surface of the outer cylinder are provided. After injecting molten resin between the outer mold that has an outer peripheral surface and separable up and down, and solidifying, the core pin is pulled out from the rear side, which is the large diameter side, and the outer mold is separated and released. The outer cylinder is obtained, but the core pin portion corresponding to the step surface on the front side in the axial direction from the front surface of the step portion of the outer cylinder is convex outward, and the outer diameter R1 is located on the rear side of the outer cylinder. The core pin is larger than the outer diameter R2 (see FIGS. 24 and 28 for the outer diameters R1 and R2) of the core pin portion corresponding to the stepped portion of the cylinder, so that the core pin is forcibly removed. If the length (the length of axial movement of the protruding part of the inner cylinder) is too long, It, there is a possibility that a defective product.

  Therefore, the outer cylinder has a configuration in which one or more holes are provided in the circumferential direction that open to the outside from the front surface of the step portion to the step surface on the front side in the axial direction and communicate with the inside and outside of the outer cylinder. It is preferable to do this. When such a configuration is adopted, a protrusion having a shape corresponding to the hole is further provided on the inner peripheral surface of the outer mold, and the portion of the outer diameter R1 of the core pin is located on the rear side of the outer cylinder. If the outer diameter R2 of the core pin portion corresponding to the stepped portion is the same diameter, and the outer mold protrusion is in contact with the outer peripheral surface of the core pin, it can be released without forcibly removing the core pin. By separating and releasing, it is possible to form an area in the outer cylinder that allows the protrusion of the inner cylinder to be relatively rotated and axially movable.

  As described above, according to the present invention, the bar-shaped cosmetic material can be satisfactorily projected and retracted from the tip of the outer cylinder, and the stick-shaped cosmetic material can be prevented from being pulled out and broken due to impacts and vibrations. The quality can be improved without loss.

  Hereinafter, a preferred embodiment of a stick-shaped cosmetic cartridge according to the present invention will be described with reference to FIGS. Note that, in each drawing, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  1 to 24 show a first embodiment of the present invention, FIGS. 25 and 26 show a second embodiment of the present invention, and FIGS. 27 and 28 show a third embodiment of the present invention, respectively. It is. First, the first embodiment will be described. FIGS. 1 and 2 are each a diagram showing a stick-shaped cosmetic supply container provided with a stick-shaped cosmetic cartridge, and FIGS. 3 to 5 are diagrams each showing a cartridge holder of a cartridge housing container in which the stick-shaped cosmetic cartridge is mounted. FIGS. 6 and 7 are views showing an applicator holder of a cartridge container, FIGS. 8 to 12 are views showing a stick-shaped cosmetic cartridge, FIGS. 13 to 17 are views showing an outer cylinder, FIG. 21 to FIG. 21 are views showing the inner cylinder, FIG. 22 is a side view showing the compression coil spring, and FIGS. 23 and 24 are views showing the mold used when manufacturing the outer cylinder. The bar-shaped cosmetic delivery container provided with the bar-shaped cosmetic cartridge in the form accommodates various solid bar-shaped cosmetics such as eyeliner, eyebrow, lip liner, etc. What can be infested A.

  As shown in FIG. 1, the bar-shaped cosmetic material dispensing container 100 has an overall shape of a long and narrow round bar shape (stick shape) like a writing instrument and exhibits a good appearance. As shown in FIG. 2, the bar-shaped cosmetic material M 1 and 2, the stick-shaped cosmetic cartridge 1 is detachably provided on one end side (left side in the figure) of the cartridge storage container 2, and on the other end side of the cartridge storage container 2, An applicator (chip in this embodiment) 3 is provided.

  As shown in FIG. 2, the cartridge housing container 2 includes a cylindrical shaft cylinder 5 forming an outer cylinder, and a cartridge holder 6 and an applicator holder 7 housed in the shaft cylinder 5 and forming an inner cylinder. Has been. The cartridge holder 6 is mounted on one side of the shaft tube 5, and the applicator holder 7 is mounted on the other side of the shaft tube 5.

  The cartridge holder 6 is formed in a stepped cylindrical shape as shown in FIGS. 3 to 5, and as shown in FIGS. 3 and 5, the rear side (right side in the drawing) is an outer diameter small diameter portion 6 y, The front side of the small diameter portion 6y is the outer diameter large diameter portion 6x. The cartridge holder 6 is provided with a large-diameter flange 6a at the tip of the outer-diameter large-diameter portion 6x. The outer peripheral surface of the outer-diameter large-diameter portion 6x has a circumferential direction at a position behind the flange 6a. A plurality of concavo-convex shapes are provided side by side, and the knurls 6 b are provided for mounting on the shaft cylinder 5. Further, an annular groove 6 d for mounting the applicator holder 7 is formed on the outer peripheral surface of the outer diameter small diameter portion 6 y of the cartridge holder 6.

  Further, as shown in FIG. 5, a partition wall 6e is provided at the boundary between the outer diameter large diameter portion 6x and the outer diameter small diameter portion 6y on the inner surface of the cartridge holder 6, and the partition wall 6e has an axial shape. An engaging portion 6f that protrudes forward is formed. The engaging portion 6f is for engaging the inner cylinder 11 of the rod-shaped cosmetic cartridge 1 in the rotational direction (details will be described later), and is a hexagonal column body having a non-circular cross section extending a predetermined length in the axial direction. (See FIG. 4). Further, as shown in FIG. 5, the cartridge holder 6 has an annular protrusion 6g for locking the main body tube (outer tube) 10 of the stick-shaped cosmetic cartridge 1 in the axial direction on the inner peripheral surface on the tip side. Is provided.

  The cartridge holder 6 is press-fitted into the shaft cylinder 5 from the rear side, and as shown in FIG. 2, the rear end surface of the flange portion 6a comes into contact with one end surface (the left end surface in the drawing) of the shaft cylinder 5, 6b is press-contacted to the inner peripheral surface of the shaft cylinder 5, so that the shaft cylinder 5 is mounted so as not to rotate but to move in the axial direction.

  As shown in FIGS. 6 and 7, the applicator holder 7 is formed in a substantially cylindrical shape, and has a large-diameter collar portion 7a at a position slightly on the distal end side (right side in the drawing) from the substantially axial center of the outer peripheral surface. I have. The applicator holder 7 has a knurl 7b on the outer peripheral surface of the rear end side (the left side in the drawing) from the flange portion 7a. It is provided for mounting on the shaft cylinder 5. In addition, as shown in FIG. 7, the applicator holder 7 has an annular irregularity for engaging with the annular groove 6d of the cartridge holder 6 in the axial direction at a position on the rear end side (left side in the drawing) of the inner peripheral surface. 7d (one where convex and concave portions are arranged in the axial direction) is provided.

  The applicator holder 7 is press-fitted into the shaft tube 5 from the rear side thereof, and as shown in FIG. 2, the collar portion 7a abuts against the other end surface (right end surface in the drawing) of the shaft tube 5, and the knurl 7b By being in pressure contact with the inner peripheral surface of the shaft tube 5, the shaft tube 5 is mounted so as not to rotate but to move in the axial direction. Further, in this state, the convex portion of the annular convex recess 7d of the applicator holder 7 and the annular groove 6d of the cartridge holder 6 are engaged in the axial direction so that the cartridge holder 6 and the applicator holder 7 cannot move in the axial direction. It is connected.

  The applicator holder 7 has the applicator 3 attached to the distal end thereof, and a cap 8 that covers and protects the applicator 3 is an outer periphery of the protruding portion of the applicator holder 7 protruding from the shaft tube 5. By contacting the surface, the applicator holder 7 is detachably mounted.

  On the other hand, the bar-shaped cosmetic cartridge 1 is schematically shown in FIGS. 8 and 9, and has a cylindrical main body 10 as an outer cylinder extending in the axial direction, and a main cylinder as shown in FIGS. 10 is a male tube 11 having a female screw accommodated in the screw 10 and a male screw. The male tube 10 is accommodated in the main tube 10 and extends in the axial direction. When the main body cylinder 10 and the inner cylinder 11 are rotated relative to each other, the screw bar 14 advances and retreats, and the bar-shaped cosmetic M protrudes and retracts from the front end of the main body cylinder 10. In addition, the rod-shaped cosmetic M used here is a rod-shaped cosmetic having an elliptical cross section.

  As shown in FIG. 2, the main body cylinder 10 has a distal end portion 10m as a knob protruding from the distal end of the cartridge housing container 2, and an outer peripheral surface of the distal end portion 10m having a small diameter via an outer circumferential step surface 10a. It is made into the stepped cylindrical shape provided with the accommodating part 10n accommodated in 2. As shown in FIG.

  As shown in FIGS. 13 and 15, the distal end portion 10m has a tapered shape with an outer diameter gradually decreasing toward the distal end, and the accommodating portion 10n is disposed on the outer circumferential surface near the outer circumferential step surface 10a on the cartridge housing container 2. An annular concavo-convex portion (in which the concavo-convex portions are arranged in the axial direction) 10b for detachably engaging the annular protrusion 6g of the cartridge holder 6 in the axial direction is provided, and between the annular concavo-convex portion 10b and the outer circumferential step surface 10a. An annular groove 10c is provided at a position therebetween. As shown in FIG. 2, the annular groove 10 c gives a good rotational resistance between the cartridge holder 6 of the cartridge housing container 2 and the main body cylinder 10 of the rod-shaped cosmetic cartridge 1, and in the cartridge housing container 2. An O-ring 15 is attached to prevent the radial cosmetic cartridge 1 from rattling in the radial direction.

  As shown in FIGS. 13, 15, and 16, the cylindrical hole penetrating in the axial direction of the main body cylinder 10 has an elliptical stick-shaped cosmetic M extending from the tip to the front in the axial direction (around the outer peripheral step surface 10 a). The ellipse hole 10d that can be slid and accommodated is slidable. From the vicinity of the tip of the ellipse hole 10d to the rear end of the ellipse hole 10d, a plurality of locations around the ellipse hole 10d (in this embodiment, The four advancing and retracting grooves 10g that accommodate and slide the supporting pieces 14d described later of the screw rod 14 are provided continuously, and the ellipse hole 10d and the advancing and retracting groove 10g constitute the advancing and retracting hole 10h.

  Further, as shown in FIGS. 13, 15 and 17, the cylindrical hole penetrating in the axial direction of the main body cylinder 10 is from the end of the elliptical hole 10d to the center rear side in the axial direction of the main body cylinder 10 (around the annular uneven portion 10b). ) To the non-circular hole 10p. The non-circular hole 10p has a shape in which the adjacent advance / retreat grooves 10g, 10g of the advance / retreat hole 10h shown in FIG. 16 are connected to each other (left and right advance / retreat grooves in FIG. 16). The adjacent advancing / retreating grooves 10g, 10g are connected in this manner to the axial direction of the distal end side of a shaft body portion 14b (a shaft body portion larger than the short axis diameter of the elliptical hole 10d) described later of the screw rod 14 in the axial direction. This is to make it possible.

  Further, as shown in FIGS. 13 and 15, the cylindrical hole penetrating in the axial direction of the main body cylinder 10 is a circular shape having a larger diameter than the elliptic hole 10d from the end of the non-circular hole 10p to the end of the main body cylinder 10. It is a hole 10q (a circular hole having a larger major axis diameter than the elliptical hole 10d). This circular hole 10q is for accommodating the inner cylinder 11, and from the front end toward the rear end, the small diameter hole portion 10r, the medium diameter hole portion 10s, the pair of step portions 10k (details will be described later) and the large diameter. It is formed by the hole 10t. Here, regarding the relationship between the inner diameters, the inner diameter of the small-diameter hole portion 10r ≦ the inner diameter of the medium-diameter hole portion 10s ≦ the inner diameter of the large-diameter hole portion 10t and the inner diameter of the medium-diameter hole portion 10s ≧ the inner side of the pair of stepped portions 10k. Any size is acceptable.

  A step surface 10e between the non-circular hole 10p and the small-diameter hole 10r is for abutting one end side (the left end side in the drawing) of a compression coil spring (biasing means) 16 to be described later, and the small-diameter hole part 10r. The step surface 10i between the inner diameter hole 10s and the medium diameter hole portion 10s functions as a stopper by contacting a later-described step surface 11d of the inner cylinder 11 when the inner cylinder 11 moves forward. It is said that. Further, a step surface 10z is provided between the medium diameter hole 10s and the large diameter hole 10t.

  Further, as shown in FIGS. 13 to 15, the large-diameter hole portion 10 t of the housing portion 10 n of the main body cylinder 10 is opposed to the stepped surface 10 z at the tip at a position on the rear side in a predetermined long axis direction with the axis line interposed therebetween. A pair of stepped portions 10k and 10k projecting inward from the inner surface of the accommodating portion 10n is provided at the position. An annular region from the stepped surface 10z to the stepped portion 10k at the tip of the large-diameter hole 10t of the containing portion 10n accommodates a later-described protrusion 11e of the inner cylinder 11 so as to be relatively rotatable and movable in the axial direction. Accordingly, the step portion 10k is provided as a retreat limit for preventing the protrusion 11e of the inner cylinder 11 from moving further rearward. In consideration of the ease of assembly described later, the rear surface of the stepped portion 10k is an inclined surface 10w.

  Further, the main body cylinder 10 is provided with a pair of holes 10j that open to the outside of the annular housing region 10v. This hole 10j opens outward from the step surface 10z at the tip of the annular housing region 10v (step surface from the front surface of the step portion 10k to the axial direction front side) to the step portion 10k at the rear end. It is provided only at the front position.

  As shown in FIGS. 10 and 11, the screw rod 14 includes a support portion 14 a accommodated in the advance / retreat hole 10 h of the main body cylinder 10 and a shaft body portion 14 b mainly accommodated in the inner cylinder 11. . The support part 14a supports the rear end part of the bar-shaped cosmetic M and advances and retreats the advance / retreat hole 10h. The base part 14c having a short elliptical column shape against which the rear end surface of the bar-shaped cosmetic M is abutted, and the base part 14c It is provided so as to protrude toward the front end side at a plurality of positions (four locations in the present embodiment) in the circumferential direction of the outer peripheral surface, and the outer peripheral surface of the rear end portion of the bar-shaped cosmetic M is sandwiched and supported by the inner peripheral surface. 14 d of support pieces.

  The shaft body part 14b has an outer peripheral surface from the front end to the vicinity of the rear end as a male screw 14f constituting a screwing mechanism. Further, on the rear side of the male screw 14f of the shaft body part 14b, a bulging part 14e having a cylindrical shape larger in diameter than the rear end of the male screw 14f is provided. The bulging portion 14e functions as a forward limit for abutting a later-described female screw 11c, 11c of the inner cylinder 11 when the screw rod 14 is advanced to advance, so that the screw rod 14 is extended maximum.

  The screw rod 14 has a base portion 14c slidably inserted into an elliptical hole 10d of the main body cylinder 10 and a support piece 14d slidably inserted into an advance / retreat groove 10g of the main body cylinder 10 (FIG. 16).

  The inner cylinder 11 is made of, for example, a flexible material such as synthetic resin, and is formed in a stepped cylindrical shape as shown in FIGS. 18 to 21, and as shown in FIGS. 18 and 20, around the center in the axial direction. The front side is a small outer diameter portion 11a, and the small outer diameter portion 11a to the vicinity of the rear end is a large outer diameter portion 11b. As shown in FIGS. 20 and 21, a pair of screw projections 11c and 11c constituting a female screw of the screw mechanism are opposed to the inner peripheral surface of the inner cylinder 11 on the distal end side of the outer diameter small diameter portion 11a. Is provided.

  As shown in FIGS. 18 and 20, the inner cylinder 11 is configured such that the outer diameter of the outer diameter small diameter portion 11a is slightly smaller than the inner diameter of the compression coil spring 16 so that the compression coil spring 16 can be extrapolated. The outer diameter of the outer diameter large-diameter portion 11 b is larger than the outer diameter of the compression coil spring 16. Further, the step surface 11d between the outer diameter small diameter portion 11a and the outer diameter large diameter portion 11b is for the radially inner surface to abut the other end side of the compression coil spring 16, and the radially outer side thereof. This surface is brought into contact with the stepped surface 10i of the main body cylinder 10 when the inner cylinder 11 moves forward and functions as a stopper.

  Further, on the outer peripheral surface of the rear end portion of the outer diameter large diameter portion 11 b of the inner cylinder 11, an annular protrusion 11 e that protrudes outward is provided so as to be accommodated in the accommodating area 10 v of the main body cylinder 10. Yes. In consideration of ease of assembly described later, the front surface of the annular protrusion 11e is an inclined surface 11m.

  Further, as shown in FIGS. 18 to 20, an elastic protrusion 11f that can be elastically pushed open in the radial direction is provided on the rear side of the annular protrusion 11e of the inner cylinder 11 so as to protrude rearward. Yes. The elastic protrusion 11f is for engaging with the hexagonal column-shaped engaging portion 6f of the cartridge holder 6 in the rotational direction. The elastic protrusions 11f are four-piece protrusions disposed at four equally spaced positions (positions at 90 ° intervals) along the circumferential direction. As shown in FIG. 19, the substantially W-shaped axial direction is provided. A groove 11g extending in the direction is provided.

  As shown in FIGS. 10 and 11, the inner cylinder 11 is inserted into the main body cylinder 10 from the front side thereof, and the annular protrusion 11 e of the inner cylinder 11 enters the accommodation region 10 v, so that Thus, relative rotation and axial movement are possible.

  In this state, the male screw 14f of the screw rod 14 is inserted into the inner cylinder 11 from the front side, and the male screw 14f is screwed into the screwing projections 11c and 11c of the inner cylinder 11. ing.

  Further, in this state, the compression coil spring 16 is provided so as to surround the outer diameter small diameter portion 11 a of the inner cylinder 11 between the step surface 10 e of the main body cylinder 10 and the inner surface of the step surface 11 d of the inner cylinder 11. Is arranged. As shown in FIG. 22, the compression coil spring 16 is dense at both ends and the axial center, and is roughened at other portions as shown in FIG.

  Due to the urging force of the compression coil spring 16, the annular projection 11e of the inner cylinder 11 is pressed against the step portion 10k of the main body cylinder 10 as shown in FIGS. Further, the rearward movement of the annular protrusion 11e of the inner cylinder 11 is prevented.

  When assembling the bar-shaped cosmetic cartridge 1 having such a configuration, first, the compression coil spring 16 is extrapolated from the rear end side to the front end side of the inner cylinder 11, and then the screw bar 14 is inserted from the rear end side to the inner cylinder. 11, the male screw 14f of the screw rod 14 is screwed into the screwing projections 11c and 11c, and the screw rod 14 is screwed to the retreat limit in the screwed state.

  Next, the assembly is inserted from the rear side of the main body cylinder 10, and the screw rod 14 and the inner cylinder 11 are advanced into the main body cylinder 10. At this time, since the front surface 11m of the annular protrusion 11e of the inner cylinder 11 is an inclined surface and the rear surfaces 10w of the pair of stepped portions 10k of the main body cylinder 10 are inclined surfaces, the inner cylinder 11 The annular protrusion 11e easily gets over the pair of stepped portions 10k of the main body cylinder 10 and enters the accommodating region 10v, whereby the compression coil spring 16 is moved to the annular step surface 10e of the main body cylinder 10 and the step surface of the inner cylinder 11. The inner cylinder 11 is attached to the main body cylinder 10 between the inner surface of 11d. Next, when the bar-shaped cosmetic M is inserted from the opening at the tip of the main body cylinder 10 and attached to the screw bar 14, the bar-shaped cosmetic cartridge 1 shown in FIGS. 10 and 11 is obtained.

  Then, as shown in FIG. 2, the stick-shaped cosmetic cartridge 1 is inserted into the opening on one end side of the cartridge housing container 2 from its rear portion, and the outer peripheral step surface 10 a of the main body cylinder 10 is the cartridge of the cartridge housing container 2. The O-ring 15 of the main body cylinder 10 is in contact with the end surface of the flange 6 a of the holder 6, and the concave portion of the annular concavo-convex part 10 b of the main body cylinder 10 is an annular protrusion 6 g of the cartridge holder 6. When the main body cylinder 10 is rotatably connected to the cartridge housing container 2, for example, when the bar-shaped cosmetic M reaches the end of use and needs to be replaced for each bar-shaped cosmetic cartridge 1, etc. Thus, the cartridge container 2 cannot be moved in the axial direction except that it is pulled out by the user with a predetermined force.

  In a state where the stick-shaped cosmetic cartridge 1 is mounted in the cartridge container 2, the elastic protrusions 11f, 11f of the inner cylinder 11 of the stick-shaped cosmetic cartridge 1 and the substantially W-shaped elastic protrusion 11f. The hexagonal column-shaped engaging portion 6f of the cartridge holder 6 of the cartridge storage container 2 enters and engages with the groove 11g, and the inner cylinder 11 and the cartridge storage container 2 are non-rotatably connected.

  Next, an injection molding for manufacturing the main body cylinder 10 constituting the bar-shaped cosmetic cartridge 1 of the bar-shaped cosmetic material feeding container 100 and a mold (mold) used therefor will be described.

  First, as a mold, as shown in FIGS. 23 and 24, an upper mold 50a and a lower mold 50b as outer molds having a concave shape 50d corresponding to the outer surface (see FIGS. 8 and 9) of the main body cylinder 10 on the inner surface. And a stepped cylindrical core pin 51 as an inner mold having a convex shape corresponding to the cylindrical hole (see FIGS. 13 to 15) of the main body cylinder 10 on the outer surface.

  The upper mold 50a and the lower mold 50b have the same inner shape, and are provided with a pair of holes 10j in the main body cylinder 10 and protrusions 50c corresponding to the annular housing region 10v. Further, the core pin 51 includes a front core pin 51a having a large truncated cone shape corresponding to the opening at the tip of the main body cylinder 10 and a rear side of the core pin 51 so as not to be forced to the rear side. It is divided into a rear core pin 51b corresponding to the main body cylinder portion. The protrusions 50c of the upper mold 50a and the lower mold 50b are provided so as to contact the outer peripheral surface of the rear core pin 51b, and the outer diameter R1 of the rear core pin 51b at this contact position, The outer diameter R2 of the rear core pin 51b at the position corresponding to the stepped portion 10k of the main body cylinder 10 is the same as the outer diameter R2. That is, not R1> R2 (this will be described later), R1 = R2, and the rear core pins 51b are gradually increased in diameter toward the rear side. As described above, when the sizes of the cylinder holes 10r, 10s, and 10t (see FIG. 15) of the main body cylinder 10 are 10r = 10s or 10s = 10t, The corresponding core pin 51b has the same diameter.

  Then, the core pin 51 having such a configuration is set so as to be positioned between the concave shape 50d of the upper die 50a and the concave shape 50d of the lower die 50b. At this time, the protrusions 50c of the upper mold 50a and the lower mold 50b abut against the outer peripheral surface of the rear core pin 51b. Next, the molten resin 52 is injected into a gap formed between the upper mold 50a and the lower mold 50b and the core pin 51, and the molten resin 52 is solidified, whereby the upper mold 50a, the lower mold 50b, the core pin 51, In the meantime, the main body cylinder 10 is formed.

  Next, release is performed. At this time, the front core pin 51a is pulled out to the front side and the rear core pin 51b is pulled out from the rear side, and each is pulled out from the large-diameter side. The main body cylinder 10 shown in FIGS. 13 and 15 is obtained.

  Thus, in this embodiment, the main body cylinder 10 opens outward from the front end to the rear end of the housing region 10v, and more precisely, from the front surface of the stepped portion 10k to the step surface 10z on the axial front side. Since the outer cylinder 50a and 50b are provided with a protrusion 50c corresponding to the hole 10j, the core pin 51b is moved to the rear side. The diameter can be increased gradually toward the side. For this reason, it is possible to release the mold without forcibly removing the core pin 51b. Therefore, there is no risk of a defective product, and the main body cylinder 10 can relatively rotate the housing area 10v, more precisely, the protrusion 11e of the inner cylinder 11. In addition, it is possible to easily form a region that can move in the axial direction.

  In the stick-shaped cosmetic material supply container 100 having the main body cylinder 10 thus obtained, the main body cylinder 10 has a protrusion 11e provided on the outer peripheral surface of the inner cylinder 11 that can be relatively rotated and moved in the axial direction. The main body cylinder 10 is provided with a step portion 10k that protrudes inward so as to prevent the protrusion 11e of the inner cylinder 11 from moving further to the rear side. A compression coil spring 16 having a biasing force that prevents the inner cylinder 11 from moving forward is provided in the cylinder 10. Accordingly, the rearward movement of the inner cylinder 11 is prevented and the forward movement is prevented, so that a rotational force can be reliably applied from the rear side. Further, the male screw 14 f of the screw rod 14 that supports the rear end portion of the bar-shaped cosmetic M and has the male screw 14 f outside is engaged with the female screw 11 c inside the inner cylinder 11. Therefore, when the cartridge container 2 and the main body cylinder 10 of the bar-shaped cosmetic cartridge 1 are relatively rotated in one direction, a rotation prevention mechanism constituted by the inside of the front side of the main body cylinder 10 and the screw rod 14, and the male screw of the screw rod 14. By the screwing mechanism constituted by 14 f and the female screw 11 c of the inner cylinder 11, the screw bar 14 advances smoothly, and the bar-shaped cosmetic M projects well from the tip of the main body cylinder 10, thereby enabling application. Further, when the cartridge container 2 and the main body cylinder 10 of the bar-shaped cosmetic cartridge 1 are relatively rotated in the other direction opposite to the one direction, the screw bar 14 moves backward smoothly, and the bar-shaped cosmetic M moves to the main body cylinder 10. Immerse from the tip.

  When the screw rod 14 advances and retreats in this way, the screw rod 14 reaches the advance limit / retreat limit and the relative rotational force in the same direction is applied to the screw rod 14 by the user, the rear of the inner cylinder 11 Since the elastic protrusion 11fc at the end can be elastically pushed open in the radial direction, the elastic protrusion 11f gets over the corner (top) of the hexagonal column-shaped engaging portion 6f of the cartridge holder 6 and is adjacent to the corner. It functions as a so-called clutch that repeats the operation of engaging the part, so that overload does not act on the part and damage to the part is prevented. In the present embodiment, the bulging portion 14e at the rear end of the screw rod 14 abuts on the female screws 11c and 11c of the inner cylinder 11 when the screw rod 14 is advanced to advance, so that the screw rod 14 is fully extended. However, the bulging portion 14e is eliminated, and the tip surface 14x of the support piece 14d of the screw rod 14 is brought into contact with the tip surface 10x of the advance / retreat groove 10g of the main body cylinder 10 when the screw rod 14 is advanced. You may make it contact | abut and make it the maximum extension (advance limit) of the screw rod 14 (refer FIG.10 and FIG.11, FIG.13 and FIG.15). Incidentally, the configuration in which the front end surface 14x of the support piece 14d of the screw rod 14 and the front end surface 10x of the advance / retreat groove 10g of the main body cylinder 10 are advanced is also applicable to the second and third embodiments described later. is there.

  Moreover, in such a stick-shaped cosmetic material supply container 100, for example, when an impact or vibration is applied by dropping the stick-shaped cosmetic material supply container 100, the inner cylinder 11 is moved as shown in FIG. The compression coil spring 16 moves forward while compressing the compression coil spring 16 against the urging force of the compression coil spring 16 with the screw rod 14 screwed into the inner cylinder 11, and shock and vibration are absorbed by the forward movement and the buffering action of the compression coil spring 16. Thus, the stick-shaped cosmetic material M is prevented from being pulled out from the screw rod 14 and broken.

  When the inner cylinder 11 moves forward, before the compression coil spring 16 is compressed and further compression of the inner cylinder 11 is prevented by the compression coil spring 16, the outer surface of the step surface 11d of the inner cylinder 11 is The inner cylinder 11 is prevented from moving forward by contacting the stepped surface 10i of the main body cylinder 10 and functioning as a stopper. In this way, the forward movement of the inner cylinder 11 is not blocked by the compression coil spring 16 but is blocked by the stopper, so that the occurrence of problems such as entanglement of the compression coil spring 16 is prevented.

  When there is no impact or vibration, the inner cylinder 11 and the screw rod 14 are returned to their original positions by the biasing force of the compression coil spring 16.

  Thus, in the present embodiment, the stick-shaped cosmetic material M appears and disappears from the tip of the main body cylinder 10, and the stick-shaped cosmetic material M is prevented from being pulled out and broken by the action of impact and vibration. As a result, it is possible to provide the bar-shaped cosmetic cartridge 1 that does not impair the feeding function as compared with the conventional one and that has an improved quality.

  Note that when the inner cylinder 11 moves forward, the annular protrusion 11e of the inner cylinder 11 is brought into contact with the front end surface (step surface 10z) of the housing region 10v of the main body cylinder 10 to prevent the inner cylinder 11 from moving forward. Also good.

  FIG. 25 is a longitudinal sectional view showing a rod-shaped cosmetic cartridge according to the second embodiment of the present invention, and FIG. 26 is a side view showing a tension coil spring in FIG.

  As shown in FIG. 25, the bar-shaped cosmetic cartridge 101 according to the second embodiment is mainly different from the bar-shaped cosmetic cartridge 1 according to the first embodiment in that the biasing means has a biasing force that prevents the inner cylinder from moving forward. In this case, a tension coil spring 116 is used instead of the compression coil spring 16.

  With this change, the main body cylinder 10 of the first embodiment is replaced with a main body cylinder 110 in which the step surface 10i between the small diameter hole portion 10r and the medium diameter hole portion 10s is displaced rearward from the first embodiment. In the inner cylinder 11 of the first embodiment, the outer diameter large diameter portion 11b is made smaller than the first embodiment, and the step surface 11d between the outer diameter small diameter portion 11a and the outer diameter large diameter portion 11b is first. The inner cylinder 111 is displaced forward from the embodiment. Other configurations of the main body cylinder 110 and the inner cylinder 111 are the same as those of the main body cylinder 10 and the inner cylinder 11 of the first embodiment.

  As shown in FIG. 26, the tension coil spring 116 is configured such that one end side (the left end side in the drawing) has a small diameter and the other end side (the right end side in the drawing) has a large diameter as compared with the central portion that is long in the axial direction. It is configured. As shown in FIG. 25, the tension coil spring 116 is disposed between the small-diameter hole portion 10r of the main body cylinder 110 and the outer-diameter large-diameter portion 11b of the inner cylinder 111, and one end side thereof is the inner cylinder. The other end side is hooked to the step surface 10 i of the main body cylinder 110 while being hooked to the step surface 11 d of 111. Accordingly, the tension coil spring 116 functions as a biasing means having a biasing force that prevents the inner cylinder 111 from moving forward, like the compression coil spring 16 of the first embodiment.

  Thus, it goes without saying that even if the tension coil spring 116 is used in place of the compression coil spring 16, the same effect as in the first embodiment can be obtained.

  In the second embodiment, when the inner cylinder 111 moves forward, the annular protrusion 11e of the inner cylinder 111 comes into contact with the front end surface (step surface 10z) of the housing area 10v of the main body cylinder 110, and the inner cylinder 111 is a stopper that prevents the forward movement of 111. In the second embodiment, the front surface of the annular protrusion 11e is not an inclined surface but a flat surface.

  FIG. 27 is a vertical perspective view showing a bar-shaped cosmetic cartridge according to the third embodiment of the present invention, and FIG. 28 is a vertical cross-sectional view of the bar-shaped cosmetic cartridge shown in FIG.

  The difference between the stick-shaped cosmetic cartridge 102 of the third embodiment and the stick-shaped cosmetic cartridge 1 of the first embodiment is that the pair of holes 10j of the main body cylinder 10 of the first embodiment is eliminated (the holes 10j are annular from the outside). The main body cylinder 210 is used in such a shape that it is buried until it reaches the storage area 10v.

  Thus, it goes without saying that even if the main body cylinder 210 without the pair of holes 10j of the main body cylinder 10 is used, the same operations and effects as in the first embodiment are achieved.

  Note that, as in the third embodiment, the configuration of the main body cylinder 210 without the hole 10j is naturally applicable to the second embodiment in which the tension coil spring 116 is used instead of the compression coil spring 16.

  Incidentally, as in the third embodiment, when the main body cylinder 210 in which the accommodation area 10v that is an annular area is not opened to the outside by the hole 10j is formed, the core pin portion corresponding to the accommodation area 10v of the main body cylinder 210 is formed. The outer shape is formed to be outward and the outer diameter R1 is larger than the outer diameter R2 of the core pin portion located on the rear side and corresponding to the step portion 10k of the main body cylinder 210 (R1> R2). For this reason, the core pin is so-called forcibly removed toward the rear side. However, when the forcible removal of the core pin does not cause a problem (for example, it does not become a defective product), the adoption of the third embodiment is also effective.

  Although the present invention has been specifically described above based on the embodiment, the present invention is not limited to the above embodiment. For example, in the above embodiment, the rod-shaped cosmetic cartridges 1, 101, 102 are replaced. Although the stick-shaped cosmetic cartridges 1, 101, 102 are detachable from the cartridge housing container 2 as a matter of course, it is of course possible to make them non-detachable.

  Moreover, in the said embodiment, although the cross section has described the application with respect to the rod-shaped cosmetic M with an elliptical shape, of course, it is applicable also to the rod-shaped cosmetic with a cross-sectional circular shape. The elliptical hole 10d may be a circular hole, and the base part 14c of the support part 14a may be cylindrical. Of course, the present invention can also be applied to stick-shaped cosmetics whose cross section is not elliptical or circular.

  Moreover, in the said embodiment, although the screwing mechanism is comprised by the male screw 14f of the screw rod 14, and the screwing protrusion 11c of the inner cylinder 11, a screwing mechanism is a helical part or intermittently. Any projection group that is arranged or a projection group that is arranged spirally and intermittently may be used as long as it functions in the same manner as the screw thread.

  Moreover, in the said embodiment, although the hole 10j and the step part 10k are made into a pair of 2 as being especially preferable, it is also possible to make it single or 3 or more. Further, as in the third embodiment, when there is no hole 10j, the stepped portion 10k may be annular.

  Furthermore, in the above-described embodiment, it is particularly preferable that the annular protrusion 11e of the inner cylinders 11, 111 is pressed against the stepped part 10k of the main cylinders 10, 110, 210 by the urging force of the compression coil spring 16 and the tension coil spring 116. However, it may be in a contact state without being pressed. Further, there may be a slight gap, and when there is such a gap, the stick-shaped cosmetic M is returned by the slight gap at the beginning when the stick-shaped cosmetic M is applied.

It is a side view which shows the stick-shaped cosmetics supply container provided with the stick-shaped cosmetics cartridge which concerns on 1st embodiment of this invention. It is a longitudinal cross-sectional view of the stick-shaped cosmetic material supply container shown in FIG. It is a side view which shows the cartridge holder in FIG. FIG. 4 is a front view of the cartridge holder shown in FIG. 3. FIG. 4 is a longitudinal sectional view of the cartridge holder shown in FIG. 3. It is a side view which shows the applicator holder in FIG. It is a longitudinal cross-sectional view of the applicator holder shown in FIG. It is a side view which shows the stick-shaped cosmetic cartridge in FIG.1 and FIG.2. It is a top view of the stick-shaped cosmetic cartridge shown in FIG. It is a vertical perspective view of the stick-shaped cosmetic cartridge shown in FIG. It is a longitudinal cross-sectional view of the stick-shaped cosmetic cartridge shown in FIG. FIG. 9 is a longitudinal sectional view showing a state where an impact or vibration is applied to the stick-shaped cosmetic cartridge shown in FIG. 8 and the inner cylinder has advanced against the urging force of the compression coil spring. It is a longitudinal cross-sectional view which shows the outer cylinder in FIG. It is a XIV-XIV arrow line view of FIG. It is an orthogonal longitudinal cross-sectional view of the outer cylinder shown in FIG. It is a XVI-XVI arrow line view of FIG. It is a XVII-XVII arrow line view of FIG. It is a side view which shows the inner cylinder in FIG. It is a XIX-XIX arrow line view of FIG. It is a longitudinal cross-sectional view of the inner cylinder shown in FIG. It is a front view of the inner cylinder shown in FIG. It is a side view which shows the compression coil spring in FIG. It is a partial cross-section exploded perspective view which shows the shaping | molding die used when manufacturing the outer cylinder of FIG. It is a longitudinal cross-sectional view which shows the shaping | molding die used when manufacturing the outer cylinder of FIG. It is a longitudinal cross-sectional view which shows the rod-shaped cosmetics cartridge which concerns on 2nd embodiment of this invention. FIG. 26 is a side view showing a tension coil spring in FIG. 25. It is a vertical perspective view which shows the rod-shaped cosmetics cartridge which concerns on 3rd embodiment of this invention. It is a longitudinal cross-sectional view of the rod-shaped cosmetic cartridge shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101,102 ... Stick-shaped cosmetic cartridge 10,10,210 ... Main body cylinder (outer cylinder), 10i, 11d ... Step surface (stopper), 10j ... Hole of main body cylinder, 10k ... Step part of main body cylinder, 10v ... Housing area of main body cylinder, 10z... Step surface (step surface on the front side in the axial direction; stopper), 11, 111... Inner cylinder, 11c. Stopper), 14 ... Screw rod, 14f ... Male screw of screw rod, 16, 116 ... Coil spring (biasing means), 100 ... Bar-shaped cosmetic feed container, M ... Bar-shaped cosmetic.

Claims (3)

A screw rod that supports the rear end of the bar-shaped cosmetic material and includes a male screw on the outside; an inner cylinder that includes a female screw into which the male screw is screwed; and a rotational force that can be applied from the rear side; The screw rod is housed on the front side so as to be non-rotatable and slidable in the axial direction, and the outer tube is housed on the rear side so as to relatively rotate the outer tube and the inner tube. And a stick-shaped cosmetic cartridge in which the stick-shaped cosmetic advances and retreats and protrudes from the tip of the outer cylinder,
The inner cylinder has a protrusion protruding outward on the outer peripheral surface thereof,
The outer cylinder accommodates the protrusion of the inner cylinder so as to be relatively rotatable and axially movable,
In the outer cylinder, a stepped portion that protrudes inward and prevents the protrusion of the inner cylinder from moving further rearward, and an urging means having an urging force that prevents the inner cylinder from moving forward, Is provided with a stick-shaped cosmetic cartridge. The biasing means is a coil spring;
2. The stopper according to claim 1, further comprising: a stopper that prevents the inner cylinder from advancing before the inner cylinder moves forward against the urging force of the coil spring and the coil spring prevents further advance of the inner cylinder. The stick-shaped cosmetic cartridge according to 1. The outer cylinder is provided with one or more holes in the circumferential direction that open to the outside from the front surface of the step portion to the step surface on the front side in the axial direction and communicate with the inside and outside of the outer cylinder. The stick-shaped cosmetic cartridge according to claim 1 or 2.

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