JP5895261B2 - Coating material extrusion container - Google Patents

Description

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

  Conventionally, as a coating material extruding container, for example, as described in Patent Document 1, a main body, a front tube mounted on the front end side of the main body so as to be relatively rotatable, and a rod-like shape housed in the front tube A pipe member in which a body (coating material) is slidably loaded is known. In such a coating material extruding container, when the front tube and the main body are relatively rotated, the pipe member is advanced together with the rod-shaped body with respect to the front tube by the screwing action of the first screwing portion (screwing portion). The rod-like body is moved forward with respect to the leading tube and the pipe member by the screwing action of the second screwing portion (screwing portion), and as a result, the rod-like body is put into use.

JP 2006-305318 A JP 2009-39173 A

  By the way, in the conventional coating material extruding container described above, when the female screw of the screwing portion is injection-molded, it is necessary to rotate and remove the core pin (core) after molding. The mold may be complicated. In this regard, it is also conceivable to inject the female screw by butting a pair of core pins with each other (see, for example, Patent Document 2). However, in this case, there is no need to rotate and remove the core pin, but the tip shape of the core pin may be complicated.

  One aspect of the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a coating material extrusion container that can be easily manufactured.

  In order to solve the above problems, an application material extrusion container according to one aspect of the present invention includes a moving body and a screwing portion in a container including a container front part and a container rear part, and the container front part and the container rear part are provided. A coating material extruding container in which the screwing action of the screwing portion works by relative rotation to advance the moving body, and includes a cylindrical tubular member, and the screwing portion is formed on the inner peripheral surface of the cylindrical member. And an opening that penetrates the peripheral wall is formed in the peripheral wall of the cylindrical member, and the female screw is provided so as to be continuous with the opening. When viewed from the side facing the part, one side constituting the edge of the opening extends along a locus drawn by the female screw.

  In this coating material extruding container, by using the opening, it is possible to form the female screw of the screwing portion using one core pin and without rotating and removing the core pin. That is, for example, when the mold and the core pin are assembled together, a predetermined space corresponding to the female screw can be defined by the radially inner convex portion of the mold and the core pin. Then, after molding (that is, after a molten resin is filled and solidified in a predetermined space to form a female screw), the mold is removed so that the convex portion of the mold is pulled out, and the core pin is moved along the axis. It can be pulled out by sliding straight in the direction. Therefore, the manufacture of the coating material extruding container can be facilitated.

  In the coating material extrusion container according to one aspect of the present invention, the opening is provided such that the rear inner surface is continuous with the front end surface of the female screw, or the front inner surface is continuous with the rear end surface of the female screw. There may be.

  In the coating material extruding container according to one aspect of the present invention, a pair of side edges constituting the edge of the opening and connected to both ends of the one side extend along the axial direction when viewed from the side facing the opening. It may be. In this case, for example, when an undercut female screw is formed, it can be easily released without excessive removal.

  In the coating material extruding container according to one aspect of the present invention, the inner peripheral surface of the cylindrical member constitutes the edge of the opening and is located at a position corresponding to the opposite side facing the one side, the height of the female screw or more. The step portion is provided along the circumferential direction, and the inner diameter of the cylindrical member may be reduced through the step portion in the direction from the one side to the opposite side. In this case, for example, when forming an undercut female screw, it is possible to easily release the mold without forcibly removing it.

  In the coating material extruding container according to one aspect of the present invention, the opening may be formed at two locations that are rotated and transferred 180 ° in the circumferential direction in the cylindrical member. In this case, for example, it is possible to cope with so-called two-way splitting (using a split mold that opens in two directions as a mold).

  According to one aspect of the present invention, it is possible to provide a coating material extrusion container that can be easily manufactured.

It is a longitudinal cross-sectional view which shows the initial state of the coating material extrusion container which concerns on one Embodiment. It is a longitudinal cross-sectional view which shows the state of the advance limit of the pipe member in the coating material extrusion container of FIG. It is a longitudinal cross-sectional view which shows the state of the advance limit of the piston in the coating material extrusion container of FIG. FIG. 2 is a side view showing a partially sectioned operation cylinder of the coating material extruding container of FIG. 1. It is sectional drawing which follows the AA line of FIG. It is a front view which shows the operation cylinder of FIG. (A) is a side view which shows the moving screw cylinder of the coating material extrusion container of FIG. 1, (b) is a bottom view which shows the moving screw cylinder of Fig.7 (a). It is sectional drawing which shows the moving screw cylinder of Fig.7 (a). It is a perspective view which shows the moving body of the coating material extrusion container of FIG. (A) is a side view which shows the piston of the coating material extrusion container of FIG. 1, (b) is sectional drawing which shows the piston of Fig.10 (a). It is a bottom view which shows the front tube of the coating material extrusion container of FIG. It is sectional drawing which follows the BB line of FIG. FIG. 2 is a bottom view showing a part of a pipe member of the coating material extruding container of FIG. 1. It is sectional drawing which follows the CC line of FIG. FIG. 13 is an enlarged cross-sectional view showing a partially enlarged cross-sectional view corresponding to FIG. 12 in the front tube of FIG. 11. It is an expanded sectional view which follows the DD line of FIG. It is a figure for demonstrating the manufacturing method of the front cylinder of FIG. It is a perspective view which cuts and shows the operation cylinder of the coating material extrusion container which concerns on other embodiment. It is a perspective view which shows the moving screw cylinder of the coating material extrusion container which concerns on other embodiment. It is a cross-sectional view explaining the ratchet mechanism of the coating material extrusion container which concerns on other embodiment. It is another cross-sectional view explaining the ratchet mechanism of the coating material extrusion container which concerns on other embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

  FIG. 1 is a longitudinal sectional view showing an initial state of a coating material extruding container according to an embodiment, and FIG. 2 is a longitudinal sectional view showing a state of a forward limit of a pipe member in the coating material extruding container of FIG. 3 is a longitudinal sectional view showing a piston advance limit state in the coating material extruding container of FIG. As shown in FIG. 1, the coating material extruding container 200 of the present embodiment accommodates the coating material M and can be pushed out and pulled back appropriately by the user's operation.

  Examples of the coating material M include various stick-shaped cosmetics such as lipstick, lip gloss, eyeliner, eye color, eyebrow, lip liner, cheek color, concealer, beauty stick, hair color, and writing tools. It is possible to use a rod-shaped core, etc., and particularly a very soft rod-like material (semi-solid, soft-solid, soft, jelly-like, mousse-like, or a kneaded shape containing these) is used. Is preferred. Further, a thin rod-shaped object having an outer diameter of 1 mm or less or a thick rod-shaped object having a diameter of 10 mm or more can be used.

  Further, as the coating material M, it is preferable to use a semi-solid material having a relatively low hardness, and it is particularly preferable to use a coating material M having a hardness of about 0.4N to 0.9N. is there. The hardness of the coating material M is determined by a general measuring method used for measuring hardness in cosmetics. Here, for example, FUDOH RHEO METER [RTC-2002D.D] (manufactured by Rheotech Co., Ltd.) is used as a measuring device, and a steel rod (one adapter) of φ2 mm is used at a speed of 6 cm / min at an ambient temperature of 25 ° C. The peak force (strength) generated in the coating material M when inserted into the coating material M at a depth of about 10 mm is defined as hardness (penetration).

  The coating material extruding container 200 is filled with a coating material M and has a discharge tube (opening) 201a at its tip, and a front tube 201 is inserted into the front half of the front tube 201 so that the front tube 201 is disposed in the axial direction. A main body cylinder 202 that engages in a rotation direction around the axis (hereinafter, also simply referred to as “rotation direction”) and is connected so as to be integrated with each other, and a rear end portion of the main body cylinder 202 is relatively rotatable and connected in the axial direction. In addition, the front tube 201 and the main body tube 202 form a container front portion, and the operation tube 203 forms a container rear portion.

  “Axis” means a center line extending in the front-rear direction of the coating material extruding container 200, and “Axis direction” means a direction along the axis in the front-rear direction (hereinafter the same). In addition, the feeding direction of the coating material M is defined as the front (advancing direction), and the feeding direction of the coating material M is defined as the rear (the receding direction).

  The coating material extruding container 200 includes a moving screw cylinder 205, a moving body 206, and a piston 207 therein. The moving screw cylinder 205 is screwed to the leading cylinder 201 via the first screwing portion 70. The moving body 206 is engaged with the operation cylinder 203 so as to be able to rotate synchronously and move in the axial direction, and is screwed into the moving screw cylinder 205 via the second screwing portion 80. The piston 207 is an extruding part that is attached to the front end (front end) of the moving body 206, and is inserted so as to be in close contact with a pipe member 208 described later to configure (form) the rear end of the filling region X.

  Further, in the present embodiment, the coating material extruding container 200 allows the relative rotation of the pipe member 208 slidably inserted in the axial direction with respect to the front tube 201, the moving screw tube 205, and the operation tube 203 only in one direction. A ratchet mechanism 209.

  In the coating material extruding container 200, when the main body tube 202 (or the front tube 201 is acceptable) and the operation tube 203 are relatively rotated in one direction, the moving screw tube 205 is advanced by the screwing action of the first screwing portion 70. Then, when the pipe member 208 advances together with the moving body 206 and the piston 207 with respect to the front tube 201 and is further relatively rotated in one direction, the front tube 201 and the pipe member 208 are moved to the front tube 201 and the pipe member 208 by the screwing action of the second screwing portion 80. On the other hand, the moving body 206 and the piston 207 move forward. Further, when the main body cylinder 202 and the operation cylinder 203 are relatively rotated in the other direction opposite to the one direction, the moving screw cylinder 205 is retracted by the screwing action of the first screwing portion 70, so The pipe member 208 moves backward together with the moving body 206 and the piston 207.

  The main body cylinder 202 is formed of, for example, an ABS resin (acrylonitrile, butadiene, styrene copolymer synthetic resin), and has a cylindrical shape. The main body cylinder 202 has an inner peripheral surface at the center in the axial direction, and the front cylinder 201 is engaged in the rotational direction. A large number of uneven parts are arranged in the circumferential direction, and the uneven part has a predetermined length in the axial direction. It has an extended knurl 202a. Further, on the inner peripheral surface of the front end portion of the main body tube 202, an annular uneven portion (in which the uneven portions are arranged in the axial direction) 202b for engaging the front tube 201 in the axial direction is provided. A convex portion 202c extending in the circumferential direction along the inner peripheral surface is formed on the inner peripheral surface on the rear side of the main body cylinder 202 on the rear side of the knurl 202a so as to engage the operation cylinder 203 in the axial direction. Has been.

  4 is a side view showing a partially sectioned operation cylinder of the coating material extruding container of FIG. 1, FIG. 5 is a sectional view taken along line AA of FIG. 4, and FIG. 6 is an operation cylinder of FIG. FIG. As shown in FIGS. 4 to 6, the operation cylinder 203 is formed of, for example, ABS resin and has a bottomed cylindrical shape that opens forward. The front end side of the operation cylinder 203 is provided with a front end cylinder portion 203a whose outer diameter is made small through a step 203b on which the main body cylinder 202 is extrapolated.

  An annular convex part 213 that engages with the main body cylinder 202 in the axial direction is provided at the front part of the outer peripheral surface of the front end cylinder part 203a. In addition, the inner peripheral surface 223 of the front end cylindrical portion 203a is provided with a plurality of one protruding portions 209a that constitute ratchet teeth of the ratchet mechanism 209. These one protrusions 209a are protruded from the inner peripheral surface 223 of the front end cylinder part 203a at twelve equally spaced positions so as to protrude radially inward. The one protrusion 209a here is provided so as to have a sawtooth shape in the circumferential direction. One protrusion 209a extends along the axial direction so as to always come into contact with the other protrusion 209b, which will be described later, when the moving screw cylinder 205 advances and retreats.

  The side surface 209a1 on one side in the circumferential direction of these one protrusion 209a (the side that comes into contact with the other protrusion 209b described later when the main body cylinder 202 and the operation cylinder 203 are relatively rotated in one direction) It is inclined with respect to the tangent plane of the inner peripheral surface 223. A side surface 209a2 on the other side in the circumferential direction of one projection 209a (a side that comes into contact with the other projection 209b described later when the main body cylinder 202 and the operation cylinder 203 are relatively rotated in the other direction) is an inner circumferential surface 223. It is comprised so that it may become substantially perpendicular | vertical with respect to these tangent planes.

  A shaft body 233 that is engaged with the moving body 206 in the rotational direction is provided upright at the center of the bottom of the operation cylinder 203. The shaft body 233 has a non-circular outer shape. Specifically, the shaft body 233 has a non-circular cross-sectional shape including protrusions 243 arranged on the outer circumferential surface of the cylindrical body so as to project radially outward at six circumferential positions and extending in the axial direction. Has been.

  As shown in FIGS. 1 and 4, the operation cylinder 203 has a front end cylinder portion 203 a inserted into the main body cylinder 202, a step 203 b abutted against the rear end surface of the main body cylinder 202, and an annular convex portion 213. Is engaged with the convex portion 202c of the main body cylinder 202 in the axial direction so as to be relatively rotatable with respect to the main body cylinder 202 and attached to be connected in the axial direction.

  7 is a side view showing the moving screw cylinder of the coating material extruding container of FIG. 1, and FIG. 8 is a cross-sectional view showing the moving screw cylinder of FIG. As shown in FIGS. 7 and 8, the moving screw cylinder 205 is formed of, for example, POM (polyacetal resin) and has a cylindrical shape. The moving screw cylinder 205 has a front end portion 205a on the front end side, a large diameter portion 205b connected to the rear side of the front end portion 205a, and a main body portion 205c connected to the rear side of the large diameter portion 205b. .

  The front end portion 205a is provided with a female screw 81 constituting the second screwing portion 80 in a region extending from the front end to a predetermined length on the inner peripheral surface thereof. Note that the pitch of the second screwing portion 80 is finer than the pitch of the first screwing portion 70, and the lead of the first screwing portion 70 (one rotation of relative rotation between the main body cylinder 202 and the operation cylinder 203). The propulsion amount) is set to be larger than the lead of the second screwing portion 80.

  In addition, an annular flange 215 that is in contact with the rear end surface of the pipe member 208 in the axial direction is provided at the center of the outer peripheral surface of the front end portion 205a. An annular convex portion 225 that engages the pipe member 208 in the axial direction is provided on the front side of the outer peripheral surface of the front end portion 205a. The front end portion 205a is configured to be able to expand radially outward by a pair of slits 235 that extend from the front end in a predetermined length in the axial direction and are opposed to each other. The rear end side of the slit 235 is widened so as to have a long oval shape in the circumferential direction when viewed from the side (see FIG. 7). In order to facilitate the assembly of 206, the front end portion 205a is configured to be easily expanded.

  The large-diameter portion 205b has a larger outer diameter than the front end portion 205a, and is provided in front of the central portion in the axial direction in the moving screw cylinder 205. The large-diameter portion 205b is provided with a male screw 72 constituting the first screwing portion 70 in a region extending from the rear end to a predetermined length on the outer peripheral surface thereof.

  The main body 205c has an outer diameter smaller than that of the large-diameter portion 205b, and is provided in a portion from the axial center to the rear end of the moving screw cylinder 205. The main body portion 205 c is provided with the other protrusion 209 b constituting the ratchet teeth of the ratchet mechanism 209 at a pair of positions facing each other on the outer peripheral surface 275. The other protrusion 209b engages with one protrusion 209a (see FIG. 6) in the rotational direction, and is provided to protrude radially outward. In the main body 205c, a U-shaped notch 245 is formed around the other protrusion 209b to communicate the inside and outside of the moving screw cylinder 205. The notch 245 causes the other protrusion 209b to have a diameter. Has elasticity in the direction.

  Specifically, the notch 245 includes a pair of slits 245a and 245b that are provided on both sides in the axial direction of the other protrusion 209b in the main body 205c and extend along the circumferential direction, and the other protrusion in the main body 205c. 209b and a slit 245c extending along the axial direction so as to be continuous with the slits 245a and 245b. The wall portion surrounded by the notch 44 in the main body portion 205c forms an arm 255 having flexibility in the radial direction, so that the other protrusion 209b disposed at the distal end portion of the arm 255 has a diameter of It has a predetermined elastic force (biasing force) in the direction.

  The side surface 209b1 on the other side in the circumferential direction of the other protrusion 209b (the side that contacts the one protrusion 209a when the main body cylinder 202 and the operation cylinder 203 are relatively rotated in one direction) is formed in a mountain shape. It is inclined with respect to the tangent plane of the outer peripheral surface 275. The side surface 209b2 on one side in the circumferential direction of the other protrusion 209b (the side that contacts the one protrusion 209a when the main body cylinder 202 and the operation cylinder 203 are relatively rotated in the other direction) is a tangent plane of the outer peripheral surface 275. It is comprised so that it may become substantially perpendicular | vertical.

  In addition, a spring portion 265 is provided at a rear portion of the main body portion 205c with respect to the other protrusion 209b. The spring portion 265 is a so-called resin spring that can be expanded and contracted in the axial direction, and biases the male screw 72 so that the first screwing portion 70 is screwed back. The spring portion 265 is provided by forming a slit 265a in the main body portion 205c extending spirally along the outer peripheral surface and communicating inside and outside.

  As shown in FIGS. 1 and 7, the moving screw cylinder 205 is inserted into the main body cylinder 202 and the operation cylinder 203, and the other projection 209 b is rotated in the rotation direction on one projection 209 a of the operation cylinder 203. The ratchet mechanism 209 is formed by engagement.

  FIG. 9 is a perspective view showing a moving body of the coating material extruding container of FIG. As shown in FIG. 9, the moving body 206 is formed of, for example, POM and has a cylindrical shape having a flange portion 206a on the tip side. The moving body 206 includes a male screw 82 of the second screwing portion 80 on the outer peripheral surface extending from the rear side to the rear end portion of the flange portion 206a. On the inner circumferential surface of the moving body 206, at six circumferential positions, ridges 206c that project radially and extend in the axial direction are provided so as to engage with the operation cylinder 203 in the rotational direction.

  As shown in FIGS. 1 and 9, the moving body 206 is externally inserted between the shaft body 233 of the operation cylinder 203 and the moving screw cylinder 205 from the rear end side. At this time, the moving body 206 has its male screw 82 screwed with the female screw 81 of the moving screw cylinder 205, and its protrusion 206c entered between the protrusions 243 and 243 of the shaft body 233 and engaged in the rotational direction. In this way, the operation cylinder 203 is mounted so as to be able to rotate synchronously and move in the axial direction.

  FIG. 10A is a side view showing a piston of the coating material extruding container of FIG. 1, and FIG. 10B is a cross-sectional view showing the piston of FIG. 10A. As shown in FIGS. 1 and 10, the piston 207 is formed of, for example, PP (polypropylene), HDPE (high density polyethylene), LLDPE (linear low density polyethylene), or the like. An annular protrusion 207b is provided on the inner peripheral surface of a recess 207a provided in the rear end surface of the piston 207 so as to be movable with respect to the moving body 206 by a predetermined length in the axial direction.

  Further, on the outer circumferential surface of the piston 207, convex portions 207 c are provided as regions that are in close contact with the pipe member 208 at four positions in the circumferential direction. The convex portion 207c is in contact (close contact) with the pipe member 208 and is slidable with resistance, and extends from the central portion in the axial direction to the rear end. Then, by forming a slight gap (air trap) between the convex portion 207c and the convex portion 207c in the circumferential direction and between the convex portion 207c and a cylinder hole 208s described later of the pipe member 208, the temperature change It is possible to prevent the coating material M from moving naturally due to environmental changes such as the above. The piston 207 is extrapolated to the front end portion of the moving body 206, and the annular protrusion 207b engages the moving body 206 in the axial direction, so that the moving body 206 can rotate synchronously and move in the axial direction (predetermined). Can be moved within the range.

  11 is a bottom view showing a front tube of the coating material extruding container of FIG. 1, and FIG. 12 is a cross-sectional view taken along line BB of FIG. As shown in FIGS. 11 and 12, the front tube 201 has a cylindrical shape, and an opening at the front end thereof is a discharge port 201 a for allowing the coating material M to appear. The front tube 201 is formed of, for example, PET (polyethylene terephthalate) resin or ABS resin. The discharge port 201a is formed by an inclined angle surface that is inclined at a predetermined angle with respect to the axial direction. The discharge port 201a may be a flat shape formed by a vertical surface in the axial direction or a mountain shape.

  Further, on the outer peripheral surface of the front tube 201, an annular convex concave portion 201b for engaging with the annular concave and convex portion 202b of the main body tube 202 in the axial direction is provided. In addition, at the outer peripheral surface of the front tube 201, the protrusions 201g extending in the axial direction are engaged with the knurls 202a of the main body tube 202 in the rotational direction at the circumferentially equidistant positions on the rear side of the annular convex recess 201b. Is provided.

  A plurality of grooves 201c extending in the axial direction are provided on the inner peripheral surface of the front tube 201 near the rear of the central portion of the axis so as to engage with the pipe member 208 in the rotational direction. The groove part 201c here is extended in the circumferentially equal position on the inner peripheral surface of the front tube 201. On the inner peripheral surface of the front tube 201, the rear side of the groove 201c is enlarged through a step 201x, and has an inner diameter continuous with the bottom surface of the groove 201c.

  In addition, a pair of openings 211 as through-holes communicating with the inside and outside of the front tube 201 are formed on the outer peripheral surface of the front tube 201 behind the protrusion 201g so as to face each other. The opening 211 is perforated in a substantially rectangular shape when viewed from the opposite direction (see FIG. 11). Specifically, the opening 211 has a front edge extending along the circumferential direction and a circumferential direction. A trailing edge extending along the spiral direction and both side edges extending along the axial direction are included.

  A female screw 71 of the first screwing portion 70 is continuously provided on the inner peripheral surface of the front tube 201 on the rear side of the opening 211. The female screw 71 is a ridge that extends in a spiral shape on the inner peripheral surface of the front tube 201, and is arranged in a pair so as to be rotated by 180 ° around the axis at the circumferential position of the opening 211. More specifically, the female screw 71 is continuous with the opening 211 in front of the female screw 71 and is formed in a circumferential range extending from one side edge of the opening 211 to the other side edge. The spiral direction in which the protrusion as the female screw 71 extends corresponds to the spiral direction of the rear edge of the opening 211.

  The front tube 201 having such a female screw 71 can be easily and suitably molded by using the opening 211. For example, when the upper die, the lower die, and the core pin are assembled to each other, a predetermined space corresponding to the female screw 71 is formed by the radially inner convex portion of the upper die, the radially inner convex portion of the lower die, and the core pin. A pair can be set. After the molding (that is, after the molten resin is filled and solidified in a predetermined space and the female screw 71 is formed), the upper mold is pulled out from one opening 211 so that the upper mold protrudes. Is removed radially outward, and the lower mold is removed radially outward so that the convex portion of the lower mold can be pulled out from the other opening 211, and then the core pin can be pulled out by sliding straight in the axial direction. .

  As shown in FIGS. 1 and 12, the front tube 201 is inserted into the main body tube 202 from the rear side, and the annular concavo-convex portion 202b of the main body tube 202 is engaged with the annular concavo-convex portion 201b in the axial direction. The knurls 202a of the main body cylinder 202 are engaged with the protrusions 201g in the rotation direction, so that they are engaged with and attached to the main body cylinder 202 in the axial direction and the rotation direction, and are integrated with the main body cylinder 202. Further, the front tube 201 is externally inserted into the moving screw tube 205 from the rear side, and the female screw 71 is screwed with the male screw 72 of the moving screw tube 205.

  13 is a bottom view showing the pipe member of the coating material extruding container of FIG. 1 in a partially sectioned view, and FIG. 14 is a sectional view taken along the line CC of FIG. As shown in FIGS. 13 and 14, the pipe member 208 has a cylindrical shape, and the opening at the front end thereof is formed by an inclined angle surface that is inclined at the predetermined angle, similarly to the discharge port 201a (see FIG. 1). Has been. The pipe member 208 is made of, for example, PP. The wall thickness forming the cylindrical hole 208s of the pipe member 208 is preferably constant and minimized, and is formed, for example, at 0.2 to 0.5 mm.

  A plurality of protrusions 218 extending in the axial direction are provided on the outer peripheral surface of the pipe member 208 on the rear side of the central portion in the axial direction so as to be engaged with the front tube 201 in the rotational direction. In order to facilitate alignment in the circumferential direction at the time of assembling, the protrusion 218 has four positions that are uneven in the circumferential direction (here, two of the circumferentially equal positions are shifted in the circumferential direction). ). Further, the rear end portion of the outer peripheral surface of the pipe member 208 is expanded in diameter via a step 208x. A pair of protrusions 228 protruding radially inward are provided at the rear end portion of the inner peripheral surface of the pipe member 208 so as to engage with the moving screw cylinder 205 in the axial direction.

  As shown in FIGS. 1 and 14, the pipe member 208 is inserted into the leading tube 201 and is slidable in the axial direction with respect to the leading tube 201. At this time, the groove 201c of the front tube 201 is engaged with the protrusion 218 in the rotation direction, and thereby the relative rotation of the pipe member 208 with respect to the front tube 201 is restricted. The front end of the pipe member 208 is positioned a certain amount behind the front end of the front tube 201 in the initial state, and is configured to be positioned substantially at the same position as the front end of the front tube 201 in the forward limit (FIG. 2). reference).

  The pipe member 208 is extrapolated to the front side of the moving screw cylinder 205, and its rear end surface is abutted against the flange 206 a of the moving screw cylinder 205, and the protrusion 228 is brought into contact with the annular convex part 225 of the moving screw cylinder 205. It is engaged in the axial direction, and thereby connected to the moving screw cylinder 205 in the axial direction. The piston 207 is inserted into the pipe member 208 so as to be in sliding contact.

  Here, in the present embodiment, the coating material M is filled (accommodated without a gap) so as to be filled from the inside of the cylindrical hole 208s of the pipe member 208 to the inside of the cylindrical hole 201s of the leading cylinder 201 in the initial state. That is, the filling region X filled with the coating material M is configured by the inner peripheral surface of the front tube 201, the inner peripheral surface of the pipe member 208, and the front surface of the piston 207.

  In the cylindrical hole 201 s of the front tube 201, at least the inner peripheral surface that is the inner surface of the region filled with the coating material M extends straight along the axial direction. Specifically, on the inner peripheral surface constituting the cylindrical hole 201s, the front region from the front end position of the pipe member 208 at the retreat limit (initial state) of the pipe member 208 has a step, a corner, a recess, and a depression. Etc. (hereinafter simply referred to as “steps or the like”), is not inclined with respect to the axial direction, and extends straight in parallel to the axial direction. Here, in the region filled with the coating material M, the cylindrical hole 201s has a constant circular cross section when viewed from the axial direction, and both edges are parallel to the axial direction when viewed from the side.

  Further, in this embodiment, as shown in FIGS. 6 and 7, in the state before the front end cylinder part 203 a of the operation cylinder 203 is extrapolated to the main body part 205 c of the moving screw cylinder 205 (state before assembly), the main body The outer diameter R3 of the tip of the other protrusion 209b of the part 205c has a larger diameter than the inner diameter R4 of the inner peripheral surface 223 of the front end cylinder part 203a. For example, the outer diameter R3 is larger than the inner diameter R4 by a predetermined length, the outer diameter R3 is φ9.4 mm, and the inner diameter R4 is 9.0 mm. As shown in FIGS. 1 to 3, in the state where the front end cylinder part 203a is inserted into the main body part 205c (the state after assembly), the other protrusion 209b is the inner peripheral surface 223 of the front end cylinder part 203a. It is always in contact with.

  Next, an example of operation | movement of the coating material extrusion container 200 is demonstrated.

  For example, in the coating material extruding container 200 in the initial state shown in FIG. 1, the front end of the pipe member 208 is located behind the front end of the front tube 201 by a certain amount. The cylinder hole 208s, the cylinder hole 201s of the leading cylinder 201, and the piston 207 are in close contact with each other and filled. The front surface of the protrusion 218 and the step 208x of the pipe member 208 are located farther away from the front surface and the step 201x of the groove 201c of the front tube 201, and the pipe member 208 can advance a certain amount relative to the front tube 201. It is in a state.

  In the initial state of the coating material extruding container 200, when the user removes the cap C and the main body cylinder 202 and the operation cylinder 203 are relatively rotated in one direction which is the feeding direction, the other protrusion of the moving screw cylinder 205 is provided. The side surface 209b1 (see FIG. 7) of the portion 209b abuts on the side surface 209a1 (see FIG. 6) of one protrusion 209a of the operation tube 203 to be engaged in the rotation direction, and the operation tube 203 and the moving screw tube 205 are synchronized. Rotate. Thereby, the moving screw cylinder 205 and the front cylinder 201 rotate relative to each other, and the screwing action of the first screwing portion 70 constituted by the male screw 72 of the moving screw cylinder 205 and the female screw 71 of the front cylinder 201 works. The moving screw cylinder 205 advances with respect to the front cylinder 201.

  As a result, as the moving screw cylinder 205 advances, the pipe member 208 advances together with the moving body 206 and the piston 207 with respect to the front cylinder 201, and the coating material M is fed out to the front cylinder 201 (that is, the front cylinder 201). The pipe member 208 is advanced together with the coating material M with respect to the cylinder 201), and the coating material M appears from the discharge port 201a.

  Next, as shown in FIG. 2, when the relative rotation in one direction is continued and the front end of the pipe member 208 is located at substantially the same position as the front end of the front tube 201, the front surface and the step of the protrusion 218 of the pipe member 208 are detected. 208x comes into contact with the front surface of the groove 201c of the front tube 201 and the step 201x, the advancement of the pipe member 208 and the moving screw tube 205 is stopped, and the screwing action of the first screwing portion 70 is stopped, whereby the pipe member 208 and the moving screw cylinder 205 reach the forward limit.

  When the relative rotation in one direction is further continued, a rotational force larger than that before the stop is applied to the operation cylinder 203 and the moving screw cylinder 205, and the other protrusion 209b slides up the one protrusion 209a. The operation cylinder 203 and the moving screw cylinder 205 are ratchet rotated (so-called “idle rotation”). As a result, only the screwing action of the second screwing portion 80 constituted by the male screw 82 of the moving body 206 and the female screw 81 of the moving screw cylinder 205 acts, and the coating material is applied by the piston 207 in the stopped pipe member 208. M is pushed forward to advance (that is, the coating material M advances relative to the front tube 201 and the pipe member 208). Thereafter, the moving body 206 and the piston 207 reach the forward limit (see FIG. 3).

  On the other hand, for example, in the used application material extruding container 200, when the main body cylinder 202 and the operation cylinder 203 are relatively rotated in the other direction which is the retraction direction, the side surface 209b2 of the other protrusion 209b of the moving screw cylinder 205 is used. 7 (see FIG. 7) abuts on the side surface 209a2 (see FIG. 6) of one protrusion 209a of the operation cylinder 203 and is locked (solidly engaged) in the rotational direction, so that the operation cylinder 203 and the moving screw cylinder 205 are connected. Synchronously rotate. As a result, the moving screw cylinder 205 and the leading cylinder 201 rotate relative to each other, the screwing action of the first screwing portion 70 acts, and the moving screw cylinder 205 moves backward with respect to the leading cylinder 201.

  As a result, along with the retraction of the moving screw cylinder 205, the pipe member 208 retreats with the moving body 206 and the piston 207 with respect to the front cylinder 201, and the coating material M is fed back with respect to the front cylinder 201 (that is, The pipe member 208 is retracted together with the coating material M with respect to the front tube 201), and the coating material M is embedded in the discharge port 201a.

  Then, when the relative rotation in the other direction is continued, the male screw 72 of the moving screw cylinder 205 is detached from the female screw 71 of the leading cylinder 201, and the screwing action of the first screwing portion 70 is released. The pipe member 208, the moving body 206, and the piston 207 reach the retreat limit. In this state, since the male screw 72 is urged forward by the contraction elastic force of the spring portion 265 (see FIG. 7), when the relative rotation in the other direction is further continued, the female screw 71 and the male screw When the click by the engagement and the disengagement of 72 is given and the retreat limit of the moving screw cylinder 205 is sensed by the user, and the relative rotation in one direction is made, the first screwing portion 70 is immediately screwed. Rejoin.

  Here, in the coating material extruding container 200 of this embodiment, as described above, the coating material M is filled from the inside of the cylindrical hole 208s of the pipe member 208 to the inside of the cylindrical hole 201s of the leading tube 201. In the inner peripheral surface of the cylindrical hole 201s 201, at least the region filled with the coating material M extends straight along the axial direction.

  Therefore, when the pipe member 208 moves forward with respect to the front tube 201, the filled coating material M does not collapse due to the shape of the inner peripheral surface of the cylindrical hole 201s, for example, a step or the like is formed on the inner peripheral surface. In this case, it is possible to prevent the coating material M from entering or being handled in the step or the like and being destroyed. Further, even when the applied coating material M expands, when the pipe member 208 moves backward with respect to the front tube 201, it is possible to prevent the coating material M from entering or being handled at a step or the like and being destroyed.

  Therefore, according to the present embodiment, it is possible to prevent the shape of the coating material M from collapsing when the pipe member 208 moves forward and backward with respect to the front tube 201. In other words, the soft coating material M can be reliably pushed out and pulled back and can be protected.

  Further, normally, during use, a force or a bending that acts on the front end of the pipe member 208 as a fulcrum acts on the coating material M pushed out from the pipe member 208. Therefore, in order to suppress collapse of the coating material M such as breakage, it is preferable that the front end of the pipe member 208 is positioned forward (on the user side). On the other hand, if the front end of the pipe member 208 protrudes forward from the front end of the front tube 201, the tip of the pipe member 208 is likely to come into contact with the user, and there is a concern that the usability may deteriorate.

  On the other hand, in the present embodiment, as described above, the front end of the pipe member 208 is located at substantially the same position as the front end of the front tube 201 at the forward limit. Therefore, it becomes possible to position the front end of the pipe member 208 to the front most in a range where it is difficult to contact the user, and as a result, the shape of the coating material M is collapsed while improving the usability and suppressing breakage of the coating material M. Can be further suppressed.

  As described above, in the state before the front end cylinder part 203a of the operation cylinder 203 is extrapolated to the main body part 205c of the moving screw cylinder 205, the outer diameter R3 of the front end part of the other protrusion 209b of the main body part 205c is The inner peripheral surface 223 of the front end cylinder portion 203a has a larger diameter than the inner diameter R4 (see FIGS. 6 and 7). In the state where the front end cylinder portion 203a is inserted into the main body portion 205c, the other protrusion 209b having elastic force in the radial direction is always the same as the one protrusion 209a even while the moving screw cylinder 205 advances and retreats. It is always in contact with the inner peripheral surface 223 of the front end cylinder part 203a so as to engage in the rotational direction.

  Accordingly, the main body 205c (moving screw cylinder 205) can be held by the front end cylinder part 203a (operation cylinder 203) without increasing the number of parts, and a resistance can be constantly generated in the rotation direction between them. As a result, rattling of the coating material extruding container 200 can be suppressed.

  In the present embodiment, as described above, when the main body cylinder 202 and the operation cylinder 203 are further rotated relative to each other in one direction, the other protrusion 209b is brought inward in the radial direction by the radial elastic force of the notch 245. Since the side surface 209b1 of the other protrusion 209b is engaged with the side surface 209a1 of the one protrusion 209a in the rotational direction and slid up, and the engagement is released, Engage again in the direction of rotation. As a result, a click feeling can be imparted to the user each time the one protrusion 209a and the other protrusion 209b are engaged and disengaged. Thereby, it becomes possible to use one protrusion 209a and the other protrusion 209b as a click mechanism that senses further advancement of the coating material M.

  Furthermore, in the present embodiment, as described above, one protrusion 209a and the other protrusion 209b are used as a ratchet mechanism 209 that allows only relative rotation in one direction between the main body cylinder 202 and the operation cylinder 203. be able to.

  By the way, in this embodiment, as described above, the notch 245 is formed around the other protrusion 209b of the main body 205c and elastic force is applied to the other protrusion 209b. Thus, a notch may be formed around one protrusion 209a of the front end cylinder part 203a to apply an elastic force to the one protrusion 209a.

  In this embodiment, the inner diameter of the tip of one projection 209a is smaller than the outer diameter of the outer peripheral surface 275 of the main body 205c before the front end cylinder 203a is extrapolated to the main body 205c. In the state where the front end cylinder portion 203a is extrapolated to the main body portion 205c, the one protrusion 209a may always be in contact with the outer peripheral surface 275.

  FIG. 15 is an enlarged cross-sectional view showing a partially enlarged cross-sectional view corresponding to FIG. 12 in the front tube of FIG. 11, and FIG. 16 is an enlarged cross-sectional view taken along the line DD of FIG. As shown in FIGS. 11, 15, and 16, the front tube 201 is a tubular member, and as described above, the female screw 71 as a protrusion extending on the inner peripheral surface 201 d. have. The female screw 71 is provided so as to be continuous with the opening 211 that penetrates the peripheral wall of the front tube 201 in the radial direction.

  When viewed from the side facing the opening 211 (see FIGS. 11 and 16), the opening 211 is a quadrangle, and one side 211a constituting the rear edge (the rear edge) of the opening 211 is formed by the female screw 71. It extends along the trace drawn. That is, the side 211 a is substantially the same line as the locus drawn by the female screw 71 and extends with substantially the same inclination angle as the female screw 71. In other words, when viewed from the direction facing the opening 211, the opening 211 has an inclination on one side 211 a that is substantially the same as the inclination in the extending direction of the female screw 71. An opening surface 211x on the rear side of the opening 211 is provided so as to be continuous with the front end surface 71x of the female screw 71 (so as to be on the same plane).

  In addition, when viewed from the side facing the opening 211, a pair of side edges 211b and 211b that form the edge of the opening 211 and are connected to both ends of the one side 211a extend in the axial direction. On the inner peripheral surface of the front tube 201, the height of the female screw 71 is equal to or higher than the height of the female screw 71 at a position corresponding to the opposite side 211 c as a front edge (front side edge) that forms the edge of the opening 211 and faces the one side 211 a. Step part 201k is provided along the circumferential direction. The inner diameter of the front tube 201 is reduced through the step portion 201k as it goes to the front side in the axial direction (in the direction from the one side 211a side to the opposite side 211c side).

  Next, an example of a manufacturing method of the leading tube 201 having such a configuration will be described with reference to FIG.

  FIG. 17 is a view for explaining a method of manufacturing the leading tube of FIG. In FIG. 17, for convenience of explanation, the outer mold that forms the outer shape of the front tapered portion of the front tube 201 is omitted. As shown in FIG. 17, first, a core pin 50 having a predetermined mold shape on the outer surface is prepared. Also, as a mold (molded outer mold) having a predetermined mold shape on the inner surface, a slide 61 that is an upper mold and a slide 62 that is a lower mold are prepared. Then, the slides 61 and 62 are arranged in combination so that the core pin 50 is surrounded by a predetermined amount, and molten resin is injected into the gap between the core pin 50 and the slides 61 and 62. As a result, the molten resin flows into the gap, and the molten resin is then solidified, whereby the leading tube 201 is formed.

  Here, the core pin 50 is formed in a stepped columnar shape, and has a stepped portion 51 provided along the circumferential direction for forming the stepped portion 201k of the front tube 201. The core pin 50 is reduced in diameter on the front side with respect to the rear side with respect to the stepped portion 51. Opening recesses 52 for forming the female screw 71 and the opening 211 are formed at two locations on the outer peripheral surface of the core pin 50 that are rotationally transferred by 180 ° in the circumferential direction. The opening recess 52 is connected to the rear side of the stepped portion 51 and opens to the radially outer side and the axially front side.

  The opening recess 52 has a substantially rectangular shape when viewed in the facing direction (upward or downward in the drawing). The opening recess 52 includes a rear edge extending along the spiral direction with respect to the circumferential direction, and both side edges extending along the axial direction. The rear edge of the opening recess 52 extends along a locus drawn by the female screw 71 when viewed from the direction facing the opening recess 52. The rear wall surface of the opening recess 52 corresponds to the rear end surface 71y (see FIG. 15) of the female screw 71. The depth (diameter dimension) of the opening recess 52 is smaller than the height of the stepped portion 51. In other words, the height of the stepped portion 51 is equal to or greater than the depth of the opening recessed portion 52.

  On the other hand, the slides 61 and 62 have the same shape as each other, and each have a convex portion 63 for forming the opening 211. The convex portion 63 has a substantially rectangular shape and projects radially inward. Specifically, the convex portion 63 has a front edge extending along the circumferential direction as corresponding to the opposite side 211c of the opening 211, and a spiral in the circumferential direction as corresponding to one side 211a of the rear edge of the opening 211. A rear edge extending along the direction and both side edges extending along the axial direction as corresponding to the side 211b of the opening 211 are included. The rear edge of the convex portion 63 extends along a locus drawn by the female screw 71. The tip surface (radially inner surface) of the convex portion 63 has the same curved shape as the bottom surface of the opening recess 52.

  Such a convex portion 63 is disposed in the opening concave portion 52 of the core pin 50 with its front edge positioned at the edge of the stepped portion 51 of the core pin 50 when the slides 61 and 62 are combined with the core pin 50. The front end surface of the opening contacts the bottom surface of the opening recess 52. As a result, a predetermined space corresponding to the shape of the female screw 71 is provided between the convex portion 63 in the opening concave portion 52.

  Then, after molding (that is, after the molten resin is filled and solidified into a predetermined space to form the female screw), the slide 61 is moved upward so that the convex portion 63 of the slide 61 is pulled out radially outward. The slide 62 is opened downward so that the convex portion 63 of the slide 62 is pulled out radially outward. Further, the core pin 50 is slid straight back in the axial direction and pulled out from the front tube 201. Thereby, the molding of the front tube 201 is completed.

  As described above, in the present embodiment, by using the opening 211 of the front tube 201, the first core pin 50 is used, the core pin 50 is not rotated and removed, and the core pin 50 is not forcibly removed. The female screw 71 of the one screwing portion 70 can be formed. Therefore, the manufacture of the coating material extruding container 200 can be facilitated.

  In the present embodiment, the pair of side sides 211b extends along the axial direction when viewed from the side facing the opening 211. Thereby, for example, when forming the undercut female screw 71, it is possible to easily release the mold without forcibly removing it.

  In the present embodiment, on the inner peripheral surface of the front tube 201, a step portion 201k that is equal to or higher than the height of the female screw 71 is provided along the circumferential direction at a position corresponding to the opposing side 211c. The inner diameter of the front tube 201 is reduced on the front side through the step portion 201k. In this case, for example, when forming the undercut female screw 71, it is possible to easily release the mold without forcibly removing it.

  In the present embodiment, the openings 211 are formed at two locations that are rotated and transferred 180 ° in the circumferential direction in the front tube 201. Thereby, when forming the front tube 201, so-called two-way splitting that opens in two directions using the slides 61 and 62 can be performed.

  In the present embodiment, the pair of side sides 211b of the opening 211 may extend so as to expand toward the front side. Even in this case, for example, when the undercut female screw 71 is formed, it can be easily released without excessive removal. Incidentally, when the female screw 71 can be formed by pulling the core pin 50 forward, the front inner surface of the opening 211 may be provided so as to be continuous with the rear end surface of the female screw 71.

  Further, in the present embodiment, the rear end surface 71y (see FIG. 16) of the female screw 71 is connected to one end side in the circumferential direction (when the main cylinder 202 and the operation cylinder 203 are relatively rotated in one direction, May be inclined so that the width in the axial direction of the female screw 71 becomes smaller toward the one end side. In other words, one end side in the circumferential direction may be tapered on the rear end surface 71y of the female screw 71 so that one end side in the circumferential direction is tapered. Thereby, for example, the female screw 71 and the male screw 72 can be easily screwed together.

  Next, the coating material extrusion container which concerns on other embodiment is demonstrated with reference to FIGS. In addition, in the following description, the description similar to the said coating material extrusion container 200 is abbreviate | omitted, and a different point is mainly demonstrated.

  FIG. 18 is a perspective view showing a cross section of an operation cylinder of a coating material extruding container according to another embodiment, and FIG. 19 is a perspective view showing a moving screw cylinder of the coating material extruding container according to another embodiment. 20 is a cross-sectional view illustrating a ratchet mechanism of a coating material extruding container according to another embodiment, and FIG. 21 is another cross-sectional view illustrating a ratchet mechanism of a coating material extruding container according to another embodiment. is there. As shown in FIG. 18, the coating material extruding container 300 according to another embodiment includes an operation cylinder 303 instead of the operation cylinder 203. As shown in FIG. 19, the coating material extruding container 300 includes a moving screw cylinder 305 instead of the moving screw cylinder 205.

  As shown in FIG. 18, the operation cylinder 303 has a plurality of one protrusion 309a as a first ratchet tooth that constitutes one of the ratchet mechanisms 209 that allows the relative rotation of the moving screw cylinder 305 and the operation cylinder 303 only in one direction. Have. One protrusion 309a is provided on the inner peripheral surface 223 of the front end cylinder portion 203a so as to protrude radially inward at twelve equidistant positions in the circumferential direction. One protrusion 309a includes an abutment surface 11 that abuts on the other protrusion 309b described later when the main body cylinder 202 and the operation cylinder 303 are relatively rotated in one direction. In one protrusion 309 a, the side surface 12 x as the front portion of the contact surface 11 is inclined in the circumferential direction more than the side surface 13 x as the rear portion of the contact surface 11. That is, the inclination degree of the side surface 12x in the circumferential direction is larger than the inclination degree of the side surface 13x in the circumferential direction.

  Specifically, the front portion 14 extending from the rear side to the front end of the central portion in the axial direction of the one protrusion 309a has a mountain-shaped cross section when viewed in the axial direction. The side surface 12x on one side of the front portion 14 in the circumferential direction (the side that abuts against the other protrusion 309b when the main body tube 202 and the operation tube 303 are relatively rotated in one direction) A side surface 12y that is inclined with respect to the tangent plane of the surface 223 and that is on the other side in the circumferential direction (the side that comes into contact with the other protrusion 309b when the main body tube 202 and the operation tube 303 are relatively rotated in the other direction) The inner circumferential surface 223 is configured to be substantially perpendicular to the tangent plane. The rear portion 15 extending from the rear side to the rear end of the central portion in the axial direction of the one protrusion 309a has a rectangular cross section when viewed in the axial direction. In the rear portion 15, one side surface 13 x and the other side surface 13 y in the circumferential direction are configured to be substantially perpendicular to the tangent plane of the inner peripheral surface 223.

  As shown in FIG. 19, the moving screw cylinder 305 has the other protrusion 309 b as the second ratchet tooth constituting the other of the ratchet mechanism 209. The other protrusion 309 b has elasticity in the radial direction by the notch 245. The other protrusion 309b has a rectangular cross section when viewed in the axial direction. Specifically, the side surface 16 on one side and the other side in the circumferential direction of the other protrusion 309 b is configured to be substantially perpendicular to the tangent plane of the outer peripheral surface 275.

  In such a coating material extruding container 300, when the main body cylinder 202 and the operation cylinder 303 are relatively rotated in one direction, as shown in FIG. 20, the side surface 16 of the other protrusion 309b of the moving screw cylinder 305 is The one projection 309a of the operation tube 303 is brought into contact with the side surface 13x of the rear portion 15 and is locked (solidly engaged) in the rotation direction. As a result, the operation tube 303 and the moving screw tube 305 rotate synchronously, the moving screw tube 305 and the front tube 201 rotate relative to each other, and the screwing action of the first screwing portion 70 works to operate the front tube 201 (and the operation tube). The moving screw cylinder 305 moves forward with respect to the cylinder 303).

  When the relative rotation in one direction is continued, as shown in FIG. 21, the side surface 16 of the other protrusion 309b comes into contact with the side surface 12x of the front portion 14 of the one protrusion 309a and is engaged in the rotation direction. The operation cylinder 303 and the moving screw cylinder 305 rotate synchronously, and the moving screw cylinder 305 further advances by the screwing action of the first screwing portion 70. Thereafter, the advancement of the moving screw cylinder 305 is stopped, the screwing action of the first screwing portion 70 is stopped, and the moving screw cylinder 305 reaches the advance limit.

  If relative rotation in one direction is further continued in this state, a larger rotational force than that before the stop is applied to the operation tube 303 and the moving screw tube 305, and the other protrusion 309b runs on the side surface 12x of the one protrusion 309a. The operating cylinder 303 and the moving screw cylinder 305 are rotated relative to each other (idle rotation).

  On the other hand, when the main body cylinder 202 and the operation cylinder 303 are relatively rotated in the other direction, the side surface 16 of the other protrusion 309b comes into contact with the side surface 12y or the side surface 13y of the one protrusion 309a and is locked in the rotation direction. The operation cylinder 303 and the moving screw cylinder 305 rotate synchronously. As a result, the moving screw cylinder 305 and the front cylinder 201 are rotated relative to each other, and the screwing action of the first screwing portion 70 works to move the moving screw cylinder 305 backward relative to the front cylinder 201 (and the operation cylinder 303). Become.

  As described above, in the coating material extruding container 300 of the present embodiment, when the main body cylinder 202 and the operation cylinder 303 are relatively rotated in one direction, first, the side surface 13x of the rear side portion having a small degree of circumferential inclination on the contact surface 11. The protrusions 309a and 309b abut against each other. Therefore, the protrusions 309a and 309b are locked to each other, and the moving screw cylinder 305 and the operation cylinder 303 are synchronously rotated, so that the moving screw cylinder 305 can be advanced. When the relative rotation is further performed in one direction, the protrusions 309a and 309b come into contact with each other via the side surface 12x of the front portion having a small degree of circumferential inclination on the contact surface 11. Therefore, the other protrusion 309b is slid so as to run up on the side surface 12x, and the moving screw cylinder 305 and the operation cylinder 303 can be rotated relative to each other. For example, the first screwing section 70 can be prevented from being damaged. Thus, according to the present embodiment, the synchronous rotation and relative rotation of the moving screw cylinder 305 and the operation cylinder 303 can be reliably controlled.

  By the way, as a recent coating material extruding container, a moving screw having a screwing part is provided in a container including a container front part and a container rear part, and when the container front part and the container rear part are relatively rotated in one direction, A moving screw cylinder has been developed that advances and stops with respect to the rear part of the container by the screwing action of the part. In such a coating material extruding container, for example, to reliably control the operation of the moving screw cylinder and to prevent the screwing portion from being damaged, the moving screw cylinder and the container are rotated when they are relatively rotated in one direction. It is desired to reliably control the rear synchronous rotation and relative rotation (idle rotation). That is, it is required to provide a coating material extruding container capable of reliably controlling the synchronous rotation and relative rotation of the moving screw cylinder and the container rear part.

  Therefore, the coating material extruding container includes a moving screw cylinder having a screwing portion in a container including a container front part and a container rear part, and when the container front part and the container rear part are relatively rotated in one direction, A coating material extruding container in which the moving screw cylinder advances and stops with respect to the rear part of the container by the screwing action of the screwing part, and the ratchet allows relative rotation of the moving screw cylinder and the rear part of the container only in one direction. The moving screw cylinder has a first ratchet tooth that constitutes one of the ratchet mechanisms, the rear part of the container has a second ratchet tooth that constitutes the other of the ratchet mechanism, and the second The ratchet teeth include a contact surface that contacts the first ratchet teeth in the circumferential direction when the container front portion and the container rear portion are relatively rotated in one direction. Rear side of the contact surface Inclined in the circumferential direction than the partial, it may be characterized in that.

  In this coating material extruding container, when the container front part and the container rear part are relatively rotated in one direction, first, the first and second ratchet teeth come into contact with the rear part having a small degree of circumferential inclination on the contact surface. Therefore, these can be locked and the moving screw cylinder and the container rear portion can be rotated synchronously. As a result, the moving screw cylinder can be advanced. Then, when the relative rotation further in one direction, the first and second ratchet teeth engage with the front side portion having a small inclination degree on the contact surface so that the second ratchet teeth run up the first ratchet teeth. Can be slid. Therefore, the moving screw cylinder and the container rear part can be relatively rotated. Therefore, according to the coating material extruding container, the synchronous rotation and the relative rotation of the moving screw cylinder and the container rear part can be reliably controlled.

  The rear portion of the second ratchet tooth has a rectangular cross section when viewed in the axial direction, and the front side portion of the second ratchet tooth has a side surface on one side in the circumferential direction when viewed in the axial direction. And a side surface on the other side in the circumferential direction may have a mountain-shaped cross section that is substantially perpendicular to the tangent plane. The first ratchet teeth may have elasticity in the radial direction and have a rectangular cross section when viewed in the axial direction. In these cases, the above-described effect of reliably controlling the synchronous rotation and the relative rotation of the moving screw cylinder and the container rear portion is suitably achieved.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments. The present invention is modified without departing from the scope described in the claims or applied to others. It may be.

  For example, as the coating material M, for example, lip gloss, lip, eye color, eyeliner, cosmetic liquid, cleaning liquid, nail enamel, nail care solution, nail remover, mascara, anti-aging, hair color, hair cosmetics, oral care , Massage oil, square plug loosening liquid, foundation, concealer, skin cream, ink for writing instruments such as marking pens, etc. Of course, it is applicable.

  Further, in the above embodiment, when the main body cylinder 202 and the operation cylinder 203 are relatively rotated in one direction, the pipe member with respect to the front cylinder 201 is obtained by cooperation of the screwing action of the first and second screwing portions 70 and 80. 208 may advance together with the coating material M. Similarly, when the relative rotation is performed in the other direction, the pipe with respect to the front tube 201 is cooperated by the screwing action of the first and second screwing portions 70 and 80. The member 208 may be retracted together with the coating material M. In the above embodiment, the first and second screwing portions 70 and 80 are provided. However, only one screwing portion may be provided, and the coating material M may be extruded / retracted by the one screwing portion.

  In the above description, “releasing the screwing action” means that the threads of the male screw and the female screw are disengaged from each other, and the screwing action does not work. Means that the screw threads of the male screw and the female screw come into contact with each other in a state where they are engaged and meshed with each other, so that the screwing does not work. “Screw return” means a stage in which the male screw returns until it contacts the side surface of the female thread.

  Further, “substantially the same position” at the front end of the pipe member 208 and the front end of the front tube 201 includes substantially the same position in addition to the completely equal position, and errors in design, manufacturing, and assembly are included. Is included. For example, the front end of the pipe member 208 may be positioned slightly forward or rearward with respect to the front end of the front tube 201. Similarly, “substantially the same line or inclination angle” includes substantially the same line or inclination angle as well as substantially equal line or inclination angle, and includes errors in design, manufacturing, and assembly. Yes. In addition, at least one of the one side 211a, the side side 211b, and the opposing side 211c may be configured to include a curve or a free curve in addition to a straight line.

  Further, the male screw and the female screw described above are not only a screw thread or a screw groove, but also a thread group or a screw groove such as an intermittently arranged protrusion group or a spiral and intermittently disposed protrusion group. It may be one that performs a similar function. The cross-sectional shape of the coating material M is the cross-sectional inner diameter shape of the cylindrical hole 201s of the front tube 201 and the cylindrical hole 208s of the pipe member 208, but in addition to the circular cross-section, an elliptical shape, a track shape, Various non-circular cross-sectional shapes such as square and drop shapes can also be selected. Moreover, this invention can also be grasped | ascertained as a manufacturing method for manufacturing (molding) the coating material extruding container 200.

  DESCRIPTION OF SYMBOLS 70 ... 1st screwing part (screwing part), 71 ... Female screw, 80 ... 2nd screwing part (screwing part), 200,300 ... Coating material extrusion container, 201 ... Lead pipe (container front part, cylinder) ), 201k, stepped portion, 202, main body tube (container front portion), 203, 303, operation tube (container rear portion), 206, moving body, 211, opening, 211a, one side, 211b, side, 211c. ... opposite side.

Claims (5)

A moving body and a screwing portion are provided in a container including a container front portion and a container rear portion, and the screwing action of the screwing portion works by rotating the container front portion and the container rear portion relative to each other. An applicator extrusion container in which the body advances,
A cylindrical tubular member is provided,
The screwing portion includes a female screw as a protrusion that spirally extends on the inner peripheral surface of the cylindrical member,
In the peripheral wall of the cylindrical member, an opening that penetrates the peripheral wall is formed,
The female screw is provided so as to be continuous with the opening,
An application material extruding container in which one side continuous with the female screw among the sides constituting the edge of the opening extends along a trajectory drawn by the female screw when viewed from the side facing the opening.   2. The coating according to claim 1, wherein the opening is provided such that a rear inner surface thereof is continuous with a front end surface of the female screw or a front inner surface thereof is continuous with a rear end surface of the female screw. Material extrusion container.   3. The coating according to claim 1, wherein, in a side view facing the opening, a pair of side edges that form a side edge of the opening and are connected to both ends of the one side extend along an axial direction. Material extrusion container. On the inner peripheral surface of the cylindrical member, a stepped portion that is higher than the height of the female screw is provided along the circumferential direction at a position corresponding to the opposing side that forms the edge of the opening and faces the one side. And
The coating material extruding container according to any one of claims 1 to 3, wherein an inner diameter of the cylindrical member is reduced through the stepped portion in a direction from the one side toward the opposite side.   The said opening part is an application | coating material extrusion container as described in any one of Claims 1-4 currently formed in two places rotated and transferred 180 degree | times to the circumferential direction in the said cylindrical member.

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