JP5143675B2 - Coating material extrusion container - Google Patents

Description

  The present invention relates to a coating material extrusion container for extruding and using a coating material.

DESCRIPTION OF RELATED ART Conventionally, the thing of the following patent documents 1 is known as a stick-shaped cosmetics supply container for extruding and using a stick-shaped cosmetic. As shown in FIG. 9, the stick-shaped cosmetic material supply container is connected to a main body cylinder 1 having a cylindrical shape and having a female screw 1 x on the inner peripheral surface thereof, and the main body cylinder 1 so as to be rotatable. A shaft-shaped core chuck 3 which is accommodated in the inside of the front tube 2 so as to be capable of synchronous rotation and is provided with a male screw piece 3x which is screwed with the female screw 1x. A flat plate-like base portion 3m having a diameter larger than that of the shaft body portion 3b on the front side, and a pair protruding rearwardly from the base portion 3m, each of which has elasticity in the radial direction and each of which is elastic When the main body cylinder 1 and the front cylinder 2 are relatively rotated by the user, the main body cylinder 1 and the core chuck 3 are provided with the cylindrical enlarged portions 3n and 3n provided with the male screw pieces 3x and 3x on the outer peripheral surface. Are rotated relative to each other, whereby a screw comprising a female screw 1x and male screw pieces 3x, 3x. The core chuck 3 advances and retreats, and the bar-shaped cosmetic material emerges from the opening at the tip of the container as the core chuck 3 advances. In particular, in this bar-shaped cosmetic material supply container, the core chuck 3 moves forward ( When the user reaches an excessively large rotational force to further advance the core chuck 3 by rotating the main body cylinder 1 and the front cylinder 2 relative to each other in the state of reaching the rear end surface 2g of the cylinder 2, the radius The cylindrical enlarged portions 3n, 3n having elasticity in the direction function as a so-called clutch that is reduced in diameter in the radial direction and idles as shown in the figure, thereby protecting the feeding mechanism.
Japanese Patent Laid-Open No. 11-276247

  Here, in the container, the cylindrical enlarged portions 3n, 3n are repeatedly reduced in diameter in the radial direction during clutching and are elastically returned to their original positions. There is a risk that stress concentrates around the base portion of the 3 m shaft body portion 3b, and cracks C are caused to enter from there and break. In particular, when the constituent material of the core chuck 3 is hard, this becomes remarkable.

  The present invention has been made to solve such a problem, and provides a coating material extruding container capable of preventing damage to a moving body such as a core chuck while sufficiently exhibiting a clutch function. Is an issue.

The coating material extruding container according to the present invention is provided with a female screw member that has a cylindrical shape and has a female screw on the inner peripheral surface, and a threaded protrusion that is axially arranged in the container and screwed into the female screw. Each of the movable bodies has a base portion constituting the rear end portion thereof, and a pair of rearwardly projecting rearwardly from the base portion. An elastic protrusion provided with a threaded projection, and by the relative rotation of the female screw member and the movable body, the threaded portion composed of the female screw and the threaded projection works to move the movable body, When the forward movement is applied to the coating material extruding container in which the coating material in the container emerges from the opening at the tip of the container, and an excessive rotational force acts to advance the moving body further in a state where the moving body has reached the movement limit. , in the coating material extruding container in which the elastic projections to diameter idle radially one Elasticity of the opposing shape of one of the opposing space between the side edge portions form the other facing between the side edge portions space of the elastic projection is symmetrical, a pair of opposing a base on one side only to a corresponding position between the side edge portions of the projections, have a opened recess radially outward and the rear recess has a length in the direction opposite of each other the elastic protrusion, the elastic collision The coating material extruding container is characterized by being smaller than the length between the side end portions facing each other .

  According to such a coating material extruding container, at the position corresponding to one side between the side end portions of the pair of opposing elastic protrusions, which is the base portion constituting the rear end portion of the moving body, Since the concave portion opened rearward is provided, the concave portion disperses / releases the stress to be concentrated at the time of clutching, thereby preventing the moving body from being damaged. In addition, since the concave portion is not provided at a position corresponding to both sides between the side end portions, but is provided only at a position corresponding to one side between the side end portions, the elastic protrusion The elastic return (restoration) to the original position is surely performed, and the clutch function can be sufficiently exhibited. In addition, when the concave portion is provided at a position corresponding to both sides between the side end portions, the stress is dispersed / released, but the elastic protrusion is returned to the original position. It may not be present and is not preferred.

  Here, the movement limit includes at least one of a forward limit and a backward limit.

  Further, if the concave portion is also opened to the front to form a groove, the stress is further dispersed and released, and the moving body is further prevented from being damaged.

  Further, when the groove is configured to cut out the shaft body portion that supports the base portion and extends forward, the stress is further dispersed and released, and the moving body is further prevented from being damaged.

  In addition, when another concave portion that is recessed forward is provided in the approximate center of the base, and the other concave portion and the concave portion communicate with each other, stress is further dispersed and released, and damage to the moving body is further prevented.

  As described above, according to the present invention, it is possible to provide a coating material extruding container capable of preventing the moving body from being damaged while sufficiently exhibiting the clutch function.

  Hereinafter, a preferred embodiment of a coating material extruding container according to the present invention will be described with reference to FIGS. In each figure, the same symbol is attached to the same element, and duplicate explanation is omitted.

  1 to 6 show an embodiment of the present invention, and FIGS. 7 and 8 show another embodiment of the present invention. First, the embodiment shown in FIGS. 1 to 6 will be described. .

  FIG. 1 is a longitudinal sectional view showing a coating material extruding container according to an embodiment of the present invention, and is a longitudinal sectional view showing an initial state and a state in which a coating material support has reached a retreat limit. FIG. FIG. 3 is an enlarged view of a main part of FIG. 2, and FIGS. 4 to 6 are views showing the coating material support. The coating material extruding container of the present embodiment accommodates the coating material and can be extruded by a user's operation as appropriate.

  Here, as a coating material, a rod-shaped cosmetic material is used as being particularly suitable. As this stick-shaped cosmetic, various stick-shaped cosmetics such as lipstick, eyeliner, eyebrow, lip liner, concealer, etc. can be used, but a stick-shaped core such as a writing instrument can also be used. It is also possible to use rod-like materials (cosmetics and other than cosmetics) such as semi-solid, soft solid, soft, and jelly. In this case, a bar-shaped cosmetic material having an elliptical cross section is used as the coating material, but it is also possible to use a circular cross section.

  As shown in FIG. 1, the coating material extruding container 100 has an elongated round bar shape like a writing instrument and exhibits a good appearance. A body cylinder (female screw member) 11 constituting the container rear part, A front cylinder 12 that is rotatably connected to the main body cylinder 11 and constitutes a container front portion is provided as an outer configuration. In the main body cylinder 11 and the front cylinder 12, the coating material (not shown) and this When the user relatively rotates the main body tube 11 and the front tube 12, the screwing portion 14 and the rotation formed in the container 100 are accommodated. The coating material support 13 moves (advances or reverses) according to the stoppers 15 (which will be described later with respect to the screwing portions 14 and the rotation stoppers 15), and the coating material appears and disappears from the opening 12a at the tip of the front tube 12. Is.

  The main body cylinder 11 has a bottomed cylindrical shape, and is a female screw member having a female screw 11x along the axial direction on the inner peripheral surface extending from the approximate center to the rear end. An end 11h on one side (rear side) of the female screw 11x is applied to the coating material support 13 (specifically, a rear end surface 13h, which will be described later of the elastic projection 13n of the coating material support 13) abuts upon retreat. The backward limit of the body 13 is set.

  The front tube 12 has a cylindrical shape, and a cylindrical hole penetrating in the axial direction (here, a cylindrical hole having an elliptical cross section and communicating with the opening 12a) allows the coating material to slide. The coating material support 13 is provided at a plurality of locations on the peripheral surface of the coating material hole 12c (in this embodiment, four locations at each location corresponding to the major axis and the minor axis of the elliptical cross section). A support piece groove 12d that enables sliding of a support piece 13d, which will be described later, is connected in series, and the coating material hole 12c and the support piece groove 12d constitute an advance / retreat hole 12e through which the coating material and the support piece 13d slide. Has been. Then, the rear end surface 12g of the portion of the front tube 12 inserted into the main body tube 11 is applied such that the coating material support 13 (specifically, the tip surface 13g of the base portion 13m described later of the coating material support 13) abuts during advancement. The forward limit of the material support 13 is set.

  The coating material support 13 is integrally formed of, for example, a flexible material having elasticity such as a synthetic resin. Here, for example, POM (polyoxymethylene), PBT (polybutylene terephthalate), or other mixed resin is used. Is formed.

  As shown in FIGS. 1 and 4, the coating material support 13 includes a support portion 13a for supporting the rear end portion of the coating material, and a shaft body extending in the axial direction on the rear side of the support portion 13a. A portion 13b, a thin-diameter connecting portion 13e for connecting the shaft body portion 13b and the support portion 13a with a small diameter, and a clutch screwing portion 13f provided continuously at the rear end of the shaft body portion 13b. ing.

  The support part 13a supports the coating material base 13c for abutting the rear end surface of the coating material whose outer shape substantially matches the coating material outer shape, and the rear end of the coating material abutted against the coating material base 13c ( Support pieces 13d provided so as to protrude toward the front end side at four locations corresponding to the support piece grooves 12d on the outer peripheral surface of the coating material base portion 13c.

  As shown in FIG. 1, the coating material support 13 having the support portion 13 a and the shaft body portion 13 b has its coating material base portion 13 c entering the coating material hole 12 c of the leading tube 12 and its supporting piece 13 d being the leading tube. The support portion 13a is slidably inserted into the advance / retreat hole 12e so as to enter the 12 support piece grooves 12d. The support piece 13d of the coating material support 13 and the support piece groove 12d into which the coating material support 13 enters form a detent 15 of the coating material support 13 so that the coating material support 13 is about the axis with respect to the front tube 12. It is engaged so as to be able to rotate synchronously and move in the axial direction.

  As shown in FIGS. 1 and 4, the shaft body portion 13b has a coating material base portion 13c and an outer shape so that the outer shape of the shaft body portion 13b can be slid in the axial direction through an advancing / retracting hole 12e including the coating material hole 12c and the support piece groove 12d. The outer shape of the support piece 13d is almost the same as that of the support piece 13d and extends in the axial direction.

  As shown in FIGS. 1 and 4 to 6, the clutch screwing portion 13 f provided at the rear end of the shaft body portion 13 b includes a plate-like base portion 13 m having an outer shape slightly larger than the outer shape of the shaft body portion 13 b. A pair of the base portion 13m protrudes rearward from the end portion of the rear end face, and is provided with elastic protrusions 13n and 13n each having elasticity in the radial direction by such a cantilever support. The elastic protrusion 13n has an outer surface formed in an arc shape, and each of the outer surfaces forming the arc shape has a screw projection 13x that is screwed into the female screw 11x of the main body cylinder 11 described above. These screw projections 13x and 13x are a pair of intermittently arranged male screws that are discontinuous in the circumferential direction. And the screwing part 14 is comprised by the said screwing protrusion 13x and the female screw 11x.

  Here, particularly in the present embodiment, a groove 13s for dispersing and releasing the stress at the time of clutching is provided at a predetermined position of the base portion 13m. Specifically, the groove 13s is a position corresponding to one side between the side end portions 13p, 13q of the pair of opposing elastic protrusions 13n, 13n (a position overlapping one side between the side end portions 13p, 13q). ) Of the base portion 13m is formed so as to be opened radially outward, rearward and forward. Here, the groove 13s is formed so as to cut out the rear end portion of the shaft body portion 13b.

  Further, in the present embodiment, a recess (another recess) 13r that is recessed forward is provided in the approximate center of the base portion 13m, and the recess 13r and the groove 13s communicate with each other. The grooves 13s and the recesses 13r form a recess structure for dispersing and releasing the stress during clutching (details will be described later). The recess 13r may be a hole extending forward.

  In the coating material extruding container 100 having such a configuration, when the user relatively rotates the main body tube 11 and the front tube 12 in one direction which is the feeding direction, the screw member 14 and the rotation stopper 15 are followed. The coating material support 13 advances, and the coating material whose rear end portion is supported by the coating material support 13 appears from the opening 12a at the tip of the front tube 12, while the user moves the main body tube 11 and the front tube. 12 is rotated in the other direction (the opposite direction of one direction), which is the rewinding direction, the coating material support 13 is retracted, and the coating material is immersed from the opening 12 a at the tip of the front tube 12.

  2 and 3, the tip surface 13g of the base portion 13m of the coating material support 13 abuts against the rear end surface 12g of the front tube 12, so that the coating material support 13 reaches the forward limit, and FIG. As shown in FIG. 4, the rear end surface 13h of the elastic protrusion 13n of the coating material support 13 abuts on the rear end 11h of the female screw 11x of the main body cylinder 11, and the coating material support 13 reaches the retreat limit. When an excessive rotational force is applied to further advance the coating material support 13 as far as possible, the elastic projections 13n and 13n function as so-called clutches that are reduced in diameter in the radial direction and run idle in order to protect the feeding mechanism. To do.

  Here, in the coating material extruding container 100 of the present embodiment, the above-described groove 13s is provided in the base portion 13m that supports the pair of elastic protrusions 13n and 13n at the rear end portion of the coating material support 13. Therefore, the groove 13s disperses and releases the stress to be concentrated at the time of clutching, thereby preventing the coating material support 13 from being damaged (see the crack C generated in the base 3m described with reference to FIG. 9 in the prior art). Has been. Further, the groove 13s is not provided at a position corresponding to both sides between the side end portions 13p and 13q, but is provided only at a position corresponding to one side between the side end portions 13p and 13q. Therefore, the elastic projections 13n and 13n are reliably restored (restored) to their original positions, and the clutch function is sufficiently exhibited. When the groove 13s is provided at a position corresponding to both sides between the side end portions 13p and 13q, the stress is dispersed and released, but the original position of the elastic protrusions 13n and 13n. There is a case where the elastic recovery to is not performed, which is not preferable.

  Further, according to the present embodiment, since the groove 13s has a structure in which the shaft body portion 13b is also notched, the stress is further dispersed and released, and the coating material support 13 is further prevented from being damaged.

  Furthermore, according to the present embodiment, the concave portion 13r that is recessed forward is provided in the approximate center of the base portion 13m, and the concave portion 13r and the groove 13s communicate with each other. 13 is further prevented from being damaged.

  In the present embodiment, the movement limit is both the forward limit and the backward limit, but may be at least one of the forward limit and the backward limit.

  FIG. 7 is a longitudinal sectional view showing a main part of a coating material extruding container according to another embodiment of the present invention, and FIG. 8 is a rear view of the coating material support in FIG.

  This embodiment is different from the previous embodiment in that a recess 13t is used instead of the groove 13s.

  The recessed portion 13t is a recessed portion opened outward and rearward in the radial direction, and is substantially the same position as the groove 13s of the previous embodiment, specifically, a predetermined position of the base portion 13m, and a pair of opposing elastic protrusions. It is provided at a position corresponding to one side between the side end portions 13p, 13q of the portions 13n, 13n.

  Even in the coating material extruding container configured in this way, the stress to concentrate during the clutch is dispersed and released by the recesses 13t opened radially outward and rearward to prevent the coating material support 13 from being damaged. Is done. The recess 13t is not provided at a position corresponding to both sides between the side end portions 13p and 13q, but is provided only at a position corresponding to one side between the side end portions 13p and 13q. Therefore, the elastic projections 13n, 13n are reliably restored to their original positions, and the clutch function is sufficiently exhibited. When the recess 13t is provided at a position corresponding to both sides between the side end portions 13p and 13q, the stress is dispersed and released, but the original position of the elastic protrusions 13n and 13n. There is a case where the elastic recovery to is not performed, which is not preferable.

  It should be noted that the depth of the recess 13t in the radial direction (in the direction perpendicular to the plane of FIG. 7; the right direction in FIG. 8) is increased to further disperse and release the stress to concentrate during clutching, thereby applying the coating material support 13 In addition, as in the previous embodiment, a recess (another recess) 13r that is recessed forward is provided at the approximate center of the base 13m, and the recess 13r and the recess 13t are provided. By communicating, the stress may be further dispersed and released to further prevent the coating material support 13 from being damaged.

  As described above, the present invention has been specifically described based on the embodiment. However, the present invention is not limited to the above embodiment, and a cartridge in which a female screw member is rotatably accommodated in the rear half portion of the front tube. It can also be applied to a cartridge-type coating material extruding container that is detachably attached (can be disabled) and rotatable with respect to the container, and is configured so that the cartridge container and the female screw member can rotate synchronously. .

  Further, in the above-described embodiment, it is particularly preferable that the present invention is applied to a container that can extrude and withdraw a rod-like material (thing other than cosmetics and cosmetics) including semi-solid, soft solid, soft, jelly, etc. However, it is also applicable to containers that extrude liquid materials such as liquid cosmetics (coating materials other than cosmetics and cosmetics), for example, using a piston or the like as a moving body, or containers that can be extruded and pulled back. It is.

  Furthermore, the screwing projection 13x and the female screw 11x may function in the same manner as a screw thread, such as a projection group arranged intermittently or a projection group arranged spirally and intermittently.

It is a longitudinal cross-sectional view which shows the initial state of the coating material extrusion container which concerns on one Embodiment of this invention, and the state which the coating material support body reached the retreat limit. It is a longitudinal cross-sectional view which shows the state which the coating material support body of the coating material extrusion container shown in FIG. 1 reached the advance limit. FIG. 3 is an enlarged view of a main part of FIG. 2. It is a perspective view which shows the coating material support body in FIG.1 and FIG.2. It is an expansion perspective view of the rear-end part of the coating material support body shown in FIG. FIG. 6 is a rear view of the coating material support shown in FIGS. 4 and 5. It is a longitudinal cross-sectional view which shows the principal part of the coating material extrusion container which concerns on other embodiment of this invention. It is a rear view of the coating material support body in FIG. It is a figure for pointing out the problem of a prior art, and is a longitudinal cross-sectional view which shows the state which the coating material support body of the coating material extrusion container reached the advance limit.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Main body cylinder (female screw member), 11h ... Retreat limit (movement limit), 11x ... Female screw, 12a ... Opening, 12g ... Advance limit (movement limit), 13 ... Application material support body (moving body), 13b ... Shaft body portion, 13m ... base, 13n ... elastic protrusion, 13p, 13q ... side end of elastic protrusion, 13r ... another recess, 13s ... groove, 13t ... recess, 13x ... screwing protrusion, 14 ... screwing Part, 100 ... coating material extrusion container.

Claims (5)

A female screw member having a cylindrical shape and having a female screw on an inner peripheral surface thereof, and a moving body having a shaft shape and disposed in the container and provided with a screw projection that is screwed with the female screw. The movable body includes a base portion constituting a rear end portion thereof, and a pair of the base portion projecting rearward from the base portion so as to be opposed to each other, each of which has elasticity in the radial direction, and the screw projection is provided on each outer surface thereof. An elastic protrusion, and by the relative rotation of the female screw member and the movable body, the threaded portion composed of the female screw and the threaded protrusion works to move the movable body, and the forward movement of the movable body When the application material in the container is an application material extruding container in which the application material appears from the opening at the tip of the container, and an excessive rotational force is applied to further move the moving body in a state where the moving body reaches the movement limit. The coating material extruding container in which the elastic protrusions are radially reduced in diameter and run idle. Stomach,
The shape of the space between one opposing side ends of the pair of opposing elastic projections and the shape of the space between the other opposing side ends are bilaterally symmetric,
On one side only corresponding to the position between the side edge portions of the elastic protruding portion opposing the pair comprising said base, have a radially outer and opened recess in the rear,
The concave portion has a length in a direction in which the elastic protrusions are opposed to each other, which is smaller than a length between opposite side ends of the elastic protrusions .   The coating material extruding container according to claim 1, wherein the movement limit is at least one of a forward limit and a backward limit.   The coating material extruding container according to claim 1, wherein the concave portion is a groove opened to the front.   4. The coating material extruding container according to claim 3, wherein the groove also cuts a shaft body portion that supports the base and extends forward. In the approximate center of the base, another recess recessed forward is provided,
The said another recessed part and the said recessed part are connecting, The coating material extrusion container as described in any one of Claims 1-4 characterized by the above-mentioned.

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