JP2020025622A - Delivery container - Google Patents

Abstract

To provide a delivery container capable of preventing damage of a screwing protrusion in delivery, and capable of being smoothly operated suppressing slide resistance in drawing.SOLUTION: A delivery container 10 comprises: a lifting cylinder 20 for holding a rod-shaped content C and on whose outer surface a screwing protrusion 26 is formed; a guide cylinder 30 for storing therein, the lifting cylinder 20 and on which a guide groove 32b is formed for inserting the screwing protrusion 26 and guiding the lifting cylinder slidably in a vertical direction in a non-rotatable manner; and a rotary cylinder 40 on which a spiral groove 41 is formed for screwing to the screwing protrusion 26 inserted into the guide groove 32b, and lifting the screwing protrusion 26 with the lifting cylinder 20 following to relative rotation to the lifting cylinder 20. The screwing protrusion 26 comprises an inclined plane 26a extending along a lower groove side face 41a on a lower part facing the lower groove side face 41a of the spiral groove 41, and a salient arc-shaped curve face 26b on an upper part facing an upper groove side face 41b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a dispensing container that accommodates a rod-shaped content so as to be able to be dispensed.

  As this kind of feeding container, Patent Literature 1 discloses a container provided with an elevating cylinder which fits and holds a bar-shaped cosmetic material and is moved up and down by a feeding mechanism. More specifically, the elevating cylinder is vertically slidably mounted inside the guide cylinder, and a cylindrical screwing projection (screwing piece) of the elevating cylinder penetrates a side wall of the guide cylinder, A guide groove for vertically and slidably guiding the elevating cylinder in a vertically rotatable manner with a guide cylinder is vertically formed. The guide groove is provided in a pair, and is provided at a position corresponding to the screwing projection of the elevating cylinder. A spiral cylinder is rotatably provided outside the guide cylinder. The spiral cylinder is formed with a spiral groove into which a screwing projection of the elevating cylinder is screwed.

Japanese Utility Model Publication No. 5-95413

  In such a feeding container, when the user rotates the spiral tube in the direction in which the contents are fed, the screwing projection rises in the guide groove of the guide tube while sliding in the spiral groove, whereby the elevating tube Rises and the contents are paid out. At this time, it may be difficult to raise the elevating cylinder due to sticking of the contents to the inner surface of the guide cylinder, etc., and in such a case, if the spiral cylinder is forcibly rotated, the screwing projection may become excessively large. There is a possibility that a large load may be applied to cause breakage.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a feeding container which prevents breakage of a screwing projection at the time of feeding, and which can be operated smoothly by suppressing sliding resistance at the time of drawing.

  The present invention relates to a dispensing container for accommodating a rod-shaped content in an axial direction of the container so as to be able to be fed out and withdrawn, the lifting cylinder holding the rod-shaped content and having a threaded protrusion formed on an outer surface thereof, And a guide groove having a guide groove formed therein for guiding the lifting / lowering cylinder in a non-rotatable and vertically slidable manner by penetrating the screw projection, and the screw fitting penetrating the guide groove. A rotating cylinder formed with a spiral groove which is screwed with the projection and raises and lowers the screwing projection together with the lifting cylinder with relative rotation with respect to the lifting cylinder, wherein the screwing projection comprises the spiral groove The lower portion of the upper and lower groove side surfaces that define the lower groove side surface has an inclined surface extending along the lower groove side surface, and a convex circle is formed on the upper portion of the upper and lower groove side surfaces that faces the upper groove side surface. It has an arcuate curved surface.

  In an advantageous aspect of the present invention, the screw projection has a vertical surface extending along the guide groove between the inclined surface and the curved surface.

  In an advantageous aspect of the present invention, an R portion or a chamfer is provided between the inclined surface and the vertical surface.

  In an advantageous aspect of the present invention, the elevating cylinder has a holding cylinder that holds a rod-shaped content, and a main body cylinder that hangs down from the holding cylinder and has the screwing projection formed at a lower end portion. Is increased as approaching the holding cylinder.

  In the feeding container of the present invention, when the rotation cylinder is relatively rotated to one side with respect to the guide cylinder, the screwing projection in the spiral groove moves upward under the guidance of the guide groove of the guide cylinder. As a result, the lifting cylinder rises. At this time, the elevating cylinder may not be able to be lifted smoothly due to sticking of the rod-shaped contents to the inner surface of the guide cylinder. In this case, the load applied to the screwing projection from the lower groove side surface of the spiral groove Increases. According to the present invention, since the screwing projection is in line contact with the lower groove side surface of the spiral groove via the inclined surface, the stress on the screwing projection is dispersed. Therefore, breakage of the screw projection can be prevented.

  On the other hand, when the rotating cylinder is relatively rotated with respect to the guide cylinder in the opposite direction, the upper groove side surface of the spiral groove comes into contact with the screwing projection and pushes it down. Is formed as a convex arcuate curved surface, the contact between the screwing projection and the upper groove side surface of the spiral groove is a point contact with small frictional resistance. Therefore, the rod-shaped contents can be smoothly drawn in.

  Therefore, according to the present invention, it is possible to provide a dispensing container which can prevent the screwing projection from being damaged at the time of dispensing, and can suppress the sliding resistance at the time of retraction and can operate smoothly.

It is sectional drawing of the feeding container of one Embodiment of this invention. (A) is a partial cross-sectional side view of the elevating cylinder in the feeding container of FIG. 1, (b) is a plan view of the elevating cylinder, and (c) is a view as viewed from an arrow A in (a). It is a side view of the guide cylinder in the feeding container of FIG. FIG. 2 is a partial cross-sectional side view showing a use state (a state in which a lifting cylinder is raised) of the feeding device of FIG. 1.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the dispensing container 10 accommodates a stick-shaped content C such as a medicine and a glue, in addition to cosmetics such as lipstick and lip balm.

  The feeding container 10 mainly includes an elevating cylinder 20, a guide cylinder 30, a rotating cylinder 40, a case 50 serving as a rotation operation member, a sealing member 60, and an overcap 70. The elevating cylinder 20, the guide cylinder 30, the rotating cylinder 40, the case 50, the sealing member 60, and the overcap 70 are each made of synthetic resin. The axes of the elevating cylinder 20, the guide cylinder 30, the rotating cylinder 40, the case 50, the sealing member 60, and the overcap 70 are located on a common axis. Hereinafter, this common axis is referred to as a container axis O, and the side of the overcap 70 along the container axis O is referred to as an upper side, and the opposite side is referred to as a lower side. Further, a direction orthogonal to the container axis O is referred to as a radial direction, and a direction circling around the container axis O is referred to as a circumferential direction.

  As shown in FIGS. 1 and 2, the elevating cylinder 20 has a substantially cylindrical shape, and has a holding cylinder 21 for holding the rod-shaped contents C, and a main body cylinder 22 hanging from the holding cylinder 21. On the inner surface of the holding cylinder 21, an annular plate-shaped receiving tray 23 that supports the rod-shaped contents C from below is integrally formed. The contents can be filled from below the elevating cylinder 20 through an opening 23a formed in the center of the tray 23.

  On the inner peripheral edge of the receiving tray 23, a holding piece 24 that protrudes obliquely upward and is buried in the rod-shaped content C to prevent the rod-shaped content C from falling off is provided upright. As shown in FIG. 2B, four holding pieces 24 are provided at equal intervals in the circumferential direction, but the number of the holding pieces 24 is not limited to this, and may be three or less or five or more. It may be formed continuously in the circumferential direction. For the same purpose, four holding ribs 25 extending in the circumferential direction are formed on the inner surface of the holding cylinder 21. The number of the holding ribs 25 is not limited to four, and may be three or less, five or more, or may be formed continuously in the circumferential direction.

  Two screwing projections 26 are formed on the outer surface of the lower end portion of the main body cylinder 22 of the elevating cylinder 20. The two screw projections 26 are formed at positions facing each other with the container axis O interposed therebetween. As will be described later, the screwing projection 26 radially penetrates the guide groove 32b of the guide cylinder 30 and then engages with the spiral groove 41 of the rotation cylinder 40 so that the rotation cylinder 40 When relatively rotated, it is pushed up or down by the spiral groove 41 under the guidance of the guide groove 32b.

  The screwing projection 26 has a columnar shape protruding outward in the radial direction, but is not a columnar shape. As shown in FIG. 2C, the screwing projection 26 is formed on the lower groove side surface 41 a of the upper and lower groove side surfaces 41 a and 41 b that define the spiral groove 41. The opposing lower portion has a flat inclined surface 26a extending along the lower groove side surface 41a, that is, at the same inclination angle. Further, the screwing projection 26 has a convex arcuate curved surface 26b in an upper portion facing the upper groove side surface 41b of the spiral groove 41. The inclined surface 26a is in line contact with the lower groove side surface 41a of the spiral groove 41 when viewed in the direction of arrow A when the rotating cylinder 40 rotates in the feeding direction. On the other hand, the curved surface 26b makes a point contact with the upper groove side surface 41b of the spiral groove 41 when viewed in the direction of the arrow A when the rotating cylinder 40 rotates in the retracting direction.

  The screwing projection 26 has vertical surfaces 26c and 26d extending along the guide groove 32b between the inclined surface 26a and the curved surface 26b. Instead of the vertical surfaces 26c and 26d, a curved surface (not shown) having the same or different curvature as the curved surface 26b may be formed. Further, the screwing projection 26 has R portions 26e and 26f formed of circular arcs between the vertical surfaces 26c and 26d and the inclined surface 26a. A chamfered portion (not shown) may be formed instead of the R portions 26e and 26f.

  The guide cylinder 30 has a cylindrical shape surrounding the elevating cylinder 20, and guides the vertical movement of the elevating cylinder 20. As shown in FIGS. 1 and 3, the guide tube 30 has an upper half portion 31 protruding above the case 50 and a lower half portion 32 that fits in the case 50. Is formed with an annular convex portion 32a that supports the sealing member 60. In the lower half portion 32, two guide grooves 32b are formed corresponding to the screwing projections 26 of the elevating cylinder 20, and the screwing projections 26 penetrate radially outward. The guide groove 32b is a slit-shaped hole extending along the container axis O from a position corresponding to the upper end of the spiral groove 41 to at least a position corresponding to the lower end of the spiral groove 41. In the illustrated example, the guide groove 32b is opened at the lower end of the guide cylinder 30 beyond the lower end of the spiral groove 41 so that the screwing projection 26 can be inserted from below the guide groove 32b. A tapered portion 32c is formed at the lower end of the guide groove 32b so as to facilitate insertion of the screwing projection 26. Following the tapered portion 32c, a retaining projection 32d for preventing the screwing projection 26 from dropping off is formed. Is formed. Note that the guide groove 32b may not be opened at the lower end of the guide cylinder 30 but may be terminated in the guide cylinder 30 as long as the lifting cylinder 20 can be assembled in the guide cylinder 30.

  The upper half portion 31 of the guide cylinder 30 projects above the tray 23 of the lifting cylinder 20 at the lowest position (FIG. 1), and forms a storage space for the rod-shaped contents C in cooperation with the tray 23. I have. For this reason, the rod-shaped contents C may be stuck to the inner surface of the guide cylinder 30 and the smooth lifting of the elevating cylinder 20 may be hindered.

  As shown in FIG. 1, the rotating cylinder 40 has a cylindrical shape surrounding the lower half 32 of the guide cylinder 30, and has two spiral grooves 41 formed on the inner surface thereof. The spiral groove 41 engages with the screwing projection 26 that has penetrated the guide groove 32b, and moves vertically under the guide groove 32b with the relative rotation of the rotating cylinder 40 with respect to the elevating cylinder 20 and the guide cylinder 30. The screwing projection 26 is moved up and down. In the illustrated example, the spiral groove 41 is formed by a concave portion, but may be formed by a through hole. On the outer peripheral surface of the rotating cylinder 40, a number of concave ridges 42 extending along the container axis O are formed.

  The case 50 as a rotation operation member is a member that a user grips and turns with a finger or the like when the rod-shaped content C is fed or pulled in. The case 50 has a cylindrical wall 51 surrounding the rotating cylinder 40, and a bottom wall 52 extending radially inward from a lower end of the cylindrical wall 51. The cylinder wall 51 protrudes above the rotating cylinder 40, and a sealing member 60 is inserted and arranged between the upper end of the cylinder wall 51 and the guide cylinder 30. On the inner peripheral surface of the cylindrical wall 51, a number of convex ridges 51a are formed which extend along the container axis O and engage with the concave ridges 42 of the rotating cylinder 40 in the circumferential direction. The concave streak 42 and the convex streak 51 a constitute a detent means between the case 50 and the rotary cylinder 40. The rotation preventing means is not limited to this, and a plurality of vertical ribs (not shown) may be formed to engage with the case 50 and the rotating cylinder 40, and the case 50 and the rotating cylinder 40 may be bonded or welded. They may be fixed to each other. Alternatively, the rotating cylinder 40 and the case 50 can be formed as a single body.

  An opening 52a communicating with an opening 23a formed in the tray 23 of the elevating cylinder 20 is formed in the bottom wall 52 of the case 50, and the contents are filled on the tray 23 through these openings 23a, 52a. Thus, the rod-shaped contents C can be formed. The opening 52a formed in the bottom wall 52 can be closed by attaching a label or the like to the bottom wall 52 after filling the contents.

  The sealing member 60 is for preventing dust and the like from entering between the case 50 and the guide cylinder 30, and is configured to rotate together with the case 50. Although the sealing member 60 in the illustrated example has a two-piece structure including a lower sealing ring 61 and an upper sealing ring 62 having a substantially L-shaped cross section, the sealing member 60 may have a one-piece structure. The upper sealing ring 62 includes a lower fitting wall 62a fitted between the lower sealing ring 61 and the cylindrical wall 51, a flange portion 62b mounted on the upper end surface of the cylindrical wall 51, and a flange portion 62b. And the upper fitting wall 62c which stands up along the guide cylinder 30 from the upper side.

  As shown in FIG. 1, the overcap 70 is formed in a topped cylindrical shape so as to cover the entire upper half portion 31 of the guide cylinder 30, and is detachably attached to the upper sealing ring 62 of the sealing member 60. The main body 71 has a double structure including a main body 71 and an inner lid 72 for sealing the upper part of the guide tube 30 inside the main body 71 in order to prevent foreign substances from adhering to the rod-shaped contents C and drying. The inner lid 72 can be omitted.

  Next, the operation of the above-mentioned feeding container 10 will be described. In the state shown in FIG. 1, the elevating cylinder 20 is located at the lower end position (bottom dead center), and the rod-shaped content C is completely drawn into the upper half 31 of the guide cylinder 30.

  After the overcap 70 is removed, for example, when the upper half 31 of the guide cylinder 30 and the case 50 are separately gripped and rotated relatively, the rotating cylinder 40 rotates with respect to the guide cylinder 30 and the spiral groove is formed. The screwing projection 26 in 41 moves upward under the guidance of the guide groove 32b of the guide cylinder 30. Thereby, as shown in FIG. 4, the elevating cylinder 20 is raised, and the rod-shaped contents C are fed out. At this time, there is a case where the elevating cylinder 20 cannot be lifted smoothly due to the sticking of the rod-shaped contents C to the inner surface of the guide cylinder 30 or the like. The load applied to the mating projection 26 increases. In the present embodiment, the screw projection 26 is in line contact with the lower groove side surface 41a of the spiral groove 41 via the inclined surface 26a, so that the stress on the screw projection 26 is dispersed. Therefore, breakage of the screw projection 26 can be prevented.

  On the other hand, when pulling in the rod-shaped content C, the case 50 may be rotated in the opposite direction with respect to the guide cylinder 30, and the upper groove side surface 41 b of the spiral groove 41 comes into contact with the screwing projection 26 this time. Although this is pushed down, since the upper part of the screwing projection 26 is formed as a curved surface 26b, the contact between the screwing projection 26 and the upper groove side surface 41b of the spiral groove 41 is a point contact with a small frictional resistance. Become. Therefore, the rod-shaped contents C can be smoothly drawn in.

  Further, according to an advantageous mode in which the screwing projection 26 has the vertical surfaces 26c and 26d extending along the guide groove 32b between the inclined surface 26a and the curved surface 26b, the screwing projection 26 and the guide groove 32b are connected to each other. Since the contact is a line contact, the vertical movement of the screwing projection 26 is stabilized.

  According to another embodiment in which a curved surface (not shown) having the same or different curvature as the curved surface 26b is provided between the inclined surface 26a and the curved surface 26b of the screw projection 26, the screw projection 26 and the guide groove 32b are provided. The point of contact is a point contact and the frictional resistance is reduced, so that the elevating cylinder 20 can be moved up and down with a smaller force.

  Further, according to the aspect in which the R portions 26e and 26f or the chamfered portions (not shown) are provided between the inclined surface 26a of the screwing projection 26 and the vertical surfaces 26c and 26d, the lower groove side surface 41a of the spiral groove 41 and the guide are provided. It is possible to avoid a situation in which the lower corner portion of the screwing projection 26 bites between the groove 32b and the movement becomes hard, and the screwing projection 26 can be moved up and down smoothly.

  Further, the elevating cylinder 20 has a holding cylinder 21 that holds the rod-shaped contents C, and a main body cylinder 22 that hangs down from the holding cylinder 21 and has a threaded projection 26 formed at a lower end portion. According to the advantageous aspect in which the rod-shaped contents C are stuck to the guide cylinder 30 or the like, it is not possible to smoothly raise the elevating cylinder 20 due to the sticking of the rod-shaped contents C to the guide cylinder 30. In addition, it is possible to prevent the lifting cylinder 20 from being damaged by the increased compressive stress. Alternatively or additionally, a reinforcing rib (not shown) extending along the container axis O direction may be provided on the inner surface of the main body tube 22. However, the thickness of the main body tube 22 may be increased as approaching the screw protrusion 26, or the thickness of the main body tube 22 may be made uniform.

  As described above, the present invention has been described based on the illustrated examples. However, the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, in the above-described embodiment, the elevating cylinder 20 has two screwing projections 26, but at least one screwing projection 26 may be provided and three or more screwing protrusions 26 may be provided. Correspondingly, one or three or more spiral grooves 41 may be formed.

  Advantageous Effects of Invention According to the present invention, it is possible to provide a dispensing container capable of preventing breakage of a screwing projection at the time of dispensing, and suppressing sliding resistance at the time of retraction, and which can be smoothly operated.

DESCRIPTION OF SYMBOLS 10 Feeding container 20 Elevating cylinder 21 Holding cylinder 22 Main body cylinder 23 Receiving tray 23a Opening 24 Holding piece 25 Holding rib 26 Threaded projection 26a Inclined surface 26b Curved surface 26c, 26d Vertical surface 26e, 26f R part 30 Guide cylinder 31 Upper half part 32 Lower half part 32a Annular convex part 32b Guide groove 32c Taper part 32d Retaining protrusion 40 Rotating cylinder 41 Spiral groove 41a Lower groove side surface 41b Upper groove side surface 42 Concave 50 Case 51 Tube wall 51a Protrusion 52 Bottom wall 52a Opening Reference Signs List 60 sealing member 61 lower sealing ring 62 upper sealing ring 70 overcap 71 main body 72 inner lid

Claims (4)

A dispensing container for accommodating the rod-shaped contents so as to be able to be extended and retracted along the container axial direction,
An elevating cylinder holding a rod-shaped content and having a threaded protrusion formed on an outer surface thereof,
A guide cylinder having a guide groove formed therein for accommodating the elevating cylinder inside, and for guiding the elevating cylinder non-rotatably and vertically slidably through the screw projection,
A rotating cylinder formed with a spiral groove that is screwed with the screwing projection penetrating the guide groove and that raises and lowers the screwing projection together with the lifting cylinder with relative rotation with respect to the lifting cylinder;
The screwing projection has an inclined surface extending along the lower groove side surface on a lower portion facing the lower groove side surface of the upper and lower groove side surfaces defining the spiral groove, and an upper groove of the upper and lower groove side surfaces. A dispensing container characterized by having a convex arcuate curved surface in an upper portion facing a side surface.   The feeding container according to claim 1, wherein the screwing projection has a vertical surface extending along the guide groove between the inclined surface and the curved surface.   The feeding container according to claim 2, further comprising an R portion or a chamfered portion between the inclined surface and the vertical surface.   The elevating cylinder has a holding cylinder that holds a rod-shaped content and a main body cylinder that hangs down from the holding cylinder and has the screwing projection formed at a lower end portion, and the thickness of the main body cylinder approaches the holding cylinder. The dispensing container according to any one of claims 1 to 3, wherein the dispensing container is increased along with.

Images