JP6354023B2 - Applicator - Google Patents

Description

  The present invention relates to an applicator used by extruding an application material.

  As a conventional applicator, for example, one described in JP 2011-115485 A is known. In this publication, a coating material extrusion container including a filling member having a filling region filled with a coating material, a main body cylinder in which the filling member is inserted, and an operation cylinder capable of rotating relative to the main body cylinder as outer configurations. Is described. Inside the coating material extruding container, there are a screw cylinder that engages with the main body cylinder so as to be able to rotate synchronously, a movable body that engages with the operation cylinder so as to be able to rotate synchronously and move in the axial direction, and is screwed with the screw cylinder, A piston that is attached to the front end (front end) of the moving body and forms the rear end of the filling region is provided. In this coating material extruding container, when the main body cylinder and the operation cylinder are rotated relative to each other, the screw cylinder and the moving body rotate relative to each other, so that the moving body moves forward by a screwing action. As a result, the piston moves forward, so that the coating material can appear from the opening in the filling region.

JP 2011-115485 A

  As described above, in the conventional applicator, a filling member, a main body cylinder, and an operation cylinder are provided as external configurations, and a screw cylinder, a moving body, and a piston are provided inside the applicator. Thus, since the conventional applicator has a large number of parts, a reduction in the number of parts is required. In addition, when the moving body and the piston are integrated in the applicator described above, the piston rotates relative to the main body cylinder with the relative rotation of the screw cylinder and the moving body, so that the coating material rotates. A problem occurs.

  Then, this invention makes it a subject to provide the applicator which can reduce rotation of an application material and can reduce a number of parts.

In order to solve the above-described problems, an applicator according to the present invention includes an extruding unit for extruding an application material, a moving body, and a screwing member inside a container including a container front part and a container rear part, and the container front part. And the container rear part are rotated relative to each other in one direction, so that the screwing action of the screwing part of the moving body and the screwing member works to advance the moving body and the pushing part. The body is integrally formed so as to be connected to each other via a cutout portion that is weaker than the surroundings. When the container front part and the container rear part are rotated relative to each other, the cutout part is cut and the movable body is cut. Is in contact with the extruding part, the moving body moves forward together with the extruding part, and the position of the cutout part when viewed from the axial direction of the container and the contact position between the moving body and the extruding part when viewed from the axial direction It is shifted in the radial direction .

  In this applicator, the extruding part for extruding the applying material and the moving body are integrally formed. Thus, since the extrusion part and the moving body are integrally molded, the number of parts can be reduced. In addition, the number of molds for manufacturing each component is reduced, and it is also possible to easily manage the components. This facilitates manufacturing and contributes to cost reduction during manufacturing. Furthermore, the extrusion part and the moving body are connected to each other via a cutout part, and this cutout part is weaker than the surroundings. Therefore, with the relative rotation between the container front part and the container rear part, it is possible to easily cut the cutout part that connects the pushing part and the moving body. Further, when the cut portion is cut, the pushing portion is brought into contact with the moving body and advances together with the moving body. Here, in the state where the cut portion is cut, the extruding part and the moving body are separated from each other, and the extruding part and the moving body can rotate relative to each other. The extruding section that extrudes does not rotate. Therefore, it is possible to prevent the coating material from rotating when the push-out portion advances.

  Moreover, the cut-out part may be thinner than the surroundings. Thus, by making the cutout portion thinner than the surroundings, the cutout portion can be easily formed.

  Moreover, the cutout part may be arranged in parallel along the rotation direction of the container. In this way, by arranging a plurality of cutout portions in the rotation direction of the container, the connection between the push-out portion and the moving body can be stabilized as compared with the case where the number of cutout portions is one. Moreover, by making the number of the cut-out portions plural, it is possible to prevent the cut-out portions from being unintentionally cut when the applicator is manufactured.

  Moreover, the container front part has a cylindrical shape, and an anti-rotation part that prevents the rotation of the extrusion part relative to the container front part may be provided on the outer surface of the extrusion part and the inner surface of the container front part. Since the rotation preventing portion prevents the rotation of the extrusion portion that extrudes the coating material, the rotation of the coating material can be more reliably prevented.

  In addition, a filling area filled with the coating material is provided inside the container front part, and the rotation prevention part provided on the inner surface of the container front part is in the axial direction of the container front part on the rear side of the filling area. It may extend to. Here, if the anti-rotation part extends to the front side of the filling region, a dent will occur in the shape of the coating material when the coating material filled in the filling region is caused to appear from the opening of the filling region during use. It can be considered. Therefore, as described above, by arranging the rotation preventing portion on the rear side of the filling region, it is possible to avoid the dent in the coating material filled in the filling region.

  Moreover, the sliding part which contact | abuts to the inner surface of a container front part may be provided in the outer surface of the extrusion part. When the front portion of the container and the rear portion of the container are relatively rotated to cut the cut portion, the extruding portion for extruding the coating material and the moving body are separated. Thus, for example, when an opening is formed on the front side of the front part of the container when an impact is applied in a state where the coating material in the front part of the container is reduced or in a state where there is no coating material, the front side of the front part of the container There is a possibility that the extruded part comes off from the side. Therefore, as described above, by providing the sliding part on the outer surface of the extrusion part, the sliding part comes into contact with the inner surface of the container front part, and the extrusion part slides on the inner surface of the container front part. It is possible to avoid a situation where the part is detached.

  According to the present invention, the rotation of the coating material can be prevented and the number of parts can be reduced.

It is a longitudinal cross-sectional view which shows the initial state of the applicator which concerns on 1st Embodiment. It is a longitudinal cross-sectional view which shows the state of the advance limit of the moving body in the applicator of FIG. It is a cross-sectional perspective view which shows the filling member of the applicator of FIG. FIG. 2 is a side view showing a partially sectioned operation tube of the applicator of FIG. 1. It is sectional drawing which shows the operation cylinder of FIG. It is a front view which shows the operation cylinder of FIG. It is a perspective view explaining shaping | molding of the operation cylinder of FIG. It is a perspective view which shows the screw cylinder of the applicator of FIG. (A) is sectional drawing which follows the AA line of FIG. 8, (b) is sectional drawing which follows the BB line of FIG. It is sectional drawing which follows the CC line of FIG. (A) is a side view showing a moving body and an extruding part of the applicator of FIG. 1, and (b) is a side view showing the moving body and the extruding part rotated 90 ° around the axis from the state of FIG. 11 (a). is there. It is sectional drawing which follows the DD line | wire of FIG.11 (b). It is a cross-sectional perspective view which shows the moving body and extrusion part of Fig.11 (a) and FIG.11 (b). It is a front view which shows the extrusion part of Fig.11 (a) and FIG.11 (b). It is sectional drawing which follows the EE line | wire of Fig.11 (a). It is sectional drawing to which the periphery of the cutout part of FIG. 12 was expanded. It is a cross-sectional perspective view which shows the state by which the mobile body and the extrusion part were cut away. It is a cross-sectional perspective view which shows the state which a moving body advances with an extrusion part. It is sectional drawing which shows the cap of the applicator of FIG.

  Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a longitudinal sectional view showing an initial state of the applicator according to the present embodiment, and FIG. 2 is a longitudinal sectional view showing a state of a forward limit of a moving body in the applicator of FIG. As shown in FIGS. 1 and 2, the applicator 100 of the present embodiment discharges (extrudes) the applicator material M filled therein 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-like core, and it is particularly preferable to use a rod-like material that is very soft (semi-solid, soft solid, soft, jelly, mousse, kneaded or the like containing these). It is. Further, a thin rod-shaped object having an outer diameter of 1 mm or less or a thick rod-shaped object having an outer diameter of 10 mm or more can be used as the coating material M.

  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 the coating material M having a hardness of about 0.4N to 0.9N. The hardness of this coating material M is calculated | required by the general measuring method used in order to measure hardness in cosmetics. Here, for example, FUDOH RHEO METER [RTC-2002D.D] (manufactured by Rheotech Co., Ltd.) is used as a measuring instrument, 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. When a depth of about 10 mm is inserted into the coating material M, the peak force (strength) generated in the coating material M is defined as hardness (penetration).

  The applicator 100 includes a filling member 1 that is a leading cylinder provided with a filling region 1a filled with the coating material M, and is connected to the filling member 1 in the axial direction at the rear end portion of the filling member 1 and is also a filling member. 1 is provided with an operation cylinder 2 engaged with 1 so as to be relatively rotatable. The filling member 1 constitutes the container front part, and the operation cylinder 2 constitutes the container rear part. In the following description, “axis” indicates the center line of the applicator 100 extending in the front-rear direction of the applicator 100, and “axis direction” indicates the front-rear direction, that is, the direction along the axis. In addition, the feeding direction of the coating material M is defined as the front (advancing direction), and the opposite direction is defined as the rear.

  The applicator 100 includes therein a moving body 3 that moves in the axial direction by relative rotation of the filling member 1 and the operation cylinder 2, an extruding unit 4 that pushes the coating material M, and an axial direction of the moving body 3 by the relative rotation. And a screw cylinder 5 as a screwing member that can be moved to. The applicator 100 also includes a ratchet mechanism 6 that allows relative rotation of the filling member 1 and the operation cylinder 2 only in one direction, a screwing portion 7 provided on the moving body 3 and the screw cylinder 5, and the filling member 1. And a cap 8 detachably attached to the operation cylinder 2 so as to cover from the front side. Here, as a material of the filling member 1, the operation cylinder 2, and the cap 8, for example, ABS resin (copolymer synthetic resin of acrylonitrile / butadiene / styrene) is used. Moreover, as a material of the moving body 3, the extrusion part 4, and the screw cylinder 5, POM (polyacetal) is used, for example.

  FIG. 3 is a cross-sectional perspective view showing the filling member 1 of the applicator 100 of FIG. As shown in FIGS. 1 and 3, the filling member 1 has a cylindrical shape, and the opening 1 b serves as a discharge port for allowing the coating material M to appear. The filling member 1 discharges the coating material M filled in the filling region 1a therein from an opening 1b formed at the tip of the filling member 1 in accordance with a user operation. The inner surface (filling region 1a) of the filling member 1 has a flat shape with no steps. The opening 1b is formed by an inclined surface that is inclined at a predetermined angle with respect to the axial direction. The opening 1b may have a flat shape formed by a surface perpendicular to the axial direction or a mountain shape.

  A knurl 1c for engaging the screw cylinder 5 in the rotational direction (direction around the axis) is formed on the rear side of the inner peripheral surface of the filling member 1. The knurl 1c is formed such that a large number of irregularities are arranged in the circumferential direction and the irregularities extend a predetermined length in the axial direction. The outer peripheral surface of the filling member 1 is tapered toward the front, and when the cap 8 is attached, the filling member 1 is held in a state of being close to the rib 8 a in the cap 8. The rear side of the outer peripheral surface of the filling member 1 is reduced in diameter via a step 1d, and has an annular recess 1e that engages the operating cylinder 2 in the axial direction.

  Further, on the inner surface of the filling member 1, a rotation preventing portion 1 f that prevents the pushing portion 4 from rotating with respect to the filling member 1 is provided. The rotation preventing portion 1f provided on the inner surface of the filling member 1 extends in the axial direction on the rear side of the filling region 1a. Further, the rotation preventing portion 1 f protrudes in a rectangular shape from the inner surface of the filling member 1 and is engaged with a concave rotation preventing portion 4 a (see FIG. 14) in the pushing portion 4.

  4 is a side view showing a part of the operation tube 2 of the applicator 100, FIG. 5 is a cross-sectional view showing the operation tube 2, FIG. 6 is a front view showing the operation tube 2, and FIG. FIG. 3 is a perspective view for explaining the forming of the operation cylinder 2. As shown in FIGS. 4 to 6, the operation cylinder 2 is an injection-molded product made of resin, and has a bottomed cylindrical shape that opens forward. On the front end side of the operation cylinder 2, a front cylinder portion 2a having a small outer diameter is provided. A cap 8 is detachably attached to the front cylindrical portion 2a.

  On the bottom side of the operation cylinder 2, an internal cylindrical portion 2 b that is coaxial with the operation cylinder 2 is provided upright. On the outer peripheral surface 2c of the inner cylindrical portion 2b, a plurality of one projecting portions 6a constituting the ratchet teeth of the ratchet mechanism 6 are provided. One of these protrusions 6a protrudes radially outward, and protrudes from the outer peripheral surface 2c of the inner cylindrical portion 2b at eight positions in the circumferential direction. One protrusion 6a is provided so as to have a sawtooth shape in the circumferential direction, and extends a predetermined length along the axial direction.

  A shaft body 2d that engages the moving body 3 in the rotational direction is provided upright at the center (axis position) at the bottom of the operation cylinder 2. The shaft body 2d has a plurality of protrusions 2e extending in the axial direction on the outer peripheral surface of the cylindrical body. The shaft body 2d has a noncircular cross section (cross section orthogonal to the axial direction). Further, the protrusion 2e constitutes one of the rotation stoppers of the moving body 3 described later.

  A plurality of projections 2 f that engage with the annular recess 1 e of the filling member 1 in the axial direction are provided in the central portion in the axial direction on the inner peripheral surface of the operation cylinder 2. The plurality of protrusions 2f are arranged at four positions in the circumferential direction, protrude radially inward, and extend along the circumferential direction. A plurality of openings 2 g penetrating the operation cylinder 2 in the axial direction are provided at the bottom of the operation cylinder 2.

  The openings 2g have a shape extending along the circumferential direction, and are arranged at four equal circumferential positions corresponding to the plurality of protrusions 2f. Each opening 2g is formed at a position including each protrusion 2f when viewed from the axial direction. That is, each protrusion 2f has a positional relationship overlapping with each of the openings 2g when viewed from the axial direction.

  As shown in FIG. 1, the operation cylinder 2 has the filling member 1 inserted into the front cylinder portion 2 a so that the step 1 d is abutted against the front cylinder portion 2 a, and the filling member 1 is projected to the protrusion 2 f of the operation cylinder 2. When the annular recess 1e is engaged, it is engaged with the filling member 1 so as to be relatively rotatable. Thus, the operation cylinder 2 is attached to the filling member 1 by being connected to the filling member 1 in the axial direction.

  As shown in FIGS. 5 and 7, the operation cylinder 2 is resin-molded using the core pins D1 and D2. Since the operation cylinder 2 has the plurality of openings 2g described above, a plurality of protrusions 2f can be formed by using these openings 2g.

  For example, when the core pins D1 and D2 are assembled to each other, the space d3 corresponding to the protrusion 2f is equally spaced in the circumferential direction so as to sandwich the recess d1 on the outer peripheral surface of the core pin D1 and the column part d2 of the core pin D2 in the axial direction. It can be drawn at the position. As a result, when the mold is released after molding (after the molten resin is filled and solidified in the space d3 to form the protrusion 2f), the core pin D2 of the core pin D2 is pulled out from the opening 2g. D2 can be slid in the axial direction. Furthermore, when releasing the product (operation cylinder 2), the core pin D1 can be easily pulled out by sliding in the axial direction.

  8 is a perspective view showing the screw cylinder 5 of the applicator 100, FIG. 9 (a) is a cross-sectional view taken along the line AA in FIG. 8, and FIG. 9 (b) is a line BB in FIG. 10 is a cross-sectional view taken along the line CC of FIG. As shown in FIGS. 8 to 10, the screw cylinder 5 is an injection-molded product made of resin and has a stepped cylindrical outer shape. The screw cylinder 5 includes a front end cylinder part 5a, a center cylinder part 5b having a larger outer diameter than the front end cylinder part 5a, and a rear end cylinder part 5c having a larger diameter outer shape than the center cylinder part 5b from the front. It has in this order toward the rear. The inner peripheral surface of the screw cylinder 5 is expanded in a stepped shape so that the inner diameter follows the outer diameter from the front toward the rear.

  The front end cylinder portion 5a includes a pair of slits 51 that extend from the front end in the axial direction by a predetermined length and are opposed to each other. By this slit 51, the front end cylinder part 5a can be expanded radially outward. The rear end side of the slit 51 extends so as to have a circular shape when viewed from the side facing the slit 51 (see FIG. 9A). Thereby, the front-end cylinder part 5a becomes easy to expand, and the mold release from the metal mold | die at the time of shaping | molding and the assembly of the moving body 3 are easy. A female screw 71 constituting one of the screwing portions 7 is formed in a region extending from the front end to the rear by a predetermined length on the inner peripheral surface of the front end cylindrical portion 5a.

  A pair of fan-shaped flanges 52 are provided on the front side of the outer peripheral surface of the front end cylinder part 5a so as to face each other through the slit 51. The flange 52 is close to or abuts on the inner peripheral surface of the filling member 1 (see FIG. 1). Therefore, the inner diameter of the female screw 71 in the front end cylinder portion 5a is prevented from expanding, and thereby it is possible to ensure a propulsive force in the axial direction of the screwing portion 7. On the central cylinder portion 5b, protrusions 53 for engaging with the knurls 1c of the filling member 1 in the rotational direction are formed at a plurality of positions in the circumferential direction on the outer peripheral surface so as to extend in the axial direction.

  The rear end cylindrical portion 5c is provided with the other protrusion 6b constituting the ratchet teeth of the ratchet mechanism 6 at a pair of positions facing each other on the inner peripheral surface 54 thereof. This protrusion 6b is for engaging with one protrusion 6a of the operation cylinder 2 in the rotational direction, and is provided so as to protrude radially inward. A U-shaped notch 55 is formed around the other protrusion 6b of the rear end cylinder part 5c so as to communicate the inside and the outside of the screw cylinder 5. The other protrusion 6b is formed by the notch 55. Has elasticity in the radial direction.

  The notch 55 is formed in the circumferential direction of a pair of slits 55a and 55b that are formed on both sides in the axial direction of the protrusion 6b in the rear end cylinder part 5c and extend in the circumferential direction, and the other protrusion 6b in the rear end cylinder part 5c. A slit 55c that is formed on one side and extends in the axial direction continuously to the slits 55a and 55b. The wall portion surrounded by the notch 55 in the rear end cylinder portion 5c forms an arm 56 having flexibility in the radial direction. Therefore, the other protrusion 6b disposed on the inner surface of the tip of the arm 56 has a predetermined elastic force (biasing force) in the radial direction.

  As shown in FIGS. 1 and 9, the screw cylinder 5 is inserted into the filling member 1, and the protrusion 53 of the screw cylinder 5 is engaged with the knurl 1 c of the filling member 1 in the rotational direction. The step surface 57 of the center tube portion 5 b and the rear end tube portion 5 c is abutted against the rear end surface of the filling member 1. Thus, the screw cylinder 5 is engaged with and mounted on the filling member 1 so as to be able to rotate synchronously. The screw cylinder 5 is inserted into the operation cylinder 2, and the inner cylindrical portion 2 b of the operation cylinder 2 is inserted into the rear end cylinder part 5 c of the screw cylinder 5. At this time, the ratchet mechanism 6 is configured by the rear end face of the screw cylinder 5 entering the vicinity (near the bottom face) of the operation cylinder 2 and the other protrusion 6b engaging with the one protrusion 6a in the rotation direction. ing.

  FIG. 11A is a side view showing the moving body 3 and the pushing portion 4 of the applicator 100, and FIG. 11B shows the moving body 3 rotated by 90 ° around the axis from the state of FIG. It is a side view which shows the extrusion part 4, FIG. 12 is sectional drawing which follows the DD line | wire of FIG.11 (b), FIG. 13 is a cross-sectional perspective view of the mobile body 3 and the extrusion part 4. FIG. As shown in FIGS. 11 to 13, the moving body 3 includes a cylindrical portion 31 formed in a cylindrical shape. The extruding part 4 is provided at the front end of the cylindrical part 31. The extruding portion 4 is in close contact with the inner peripheral surface of the filling member 1 (see FIG. 1) and constitutes (forms) the rear end of the filling region 1a of the filling member 1.

  The cylindrical portion 31 includes a male screw 72 constituting the other of the screwing portion 7 on the outer peripheral surface extending from the rear side to the rear end portion from the front end portion. On the inner circumferential surface of the cylindrical portion 31, a ridge 32 that protrudes inward in the radial direction and extends in the axial direction is provided as one constituting the other of the rotation stoppers in the circumferential direction. In a pair of positions facing each other on the outer peripheral surface on the front end side of the cylindrical portion 31, a core pin is supported so as not to be tilted by the injection pressure at the time of molding. It is provided to penetrate. Further, a front end protruding portion 34 protruding in a cylindrical shape is provided at the front end of the cylindrical portion 31.

  FIG. 14 is a front view of the extruded portion 4 as viewed from the front. As shown in FIGS. 11 to 14, the extruding portion 4 has a substantially disc shape, a rear end portion 4 b constituting the rear end face of the filling region 1 a of the filling member 1, and a front portion from a part of the rear end portion 4 b. 4c. In the rear end portion 4b where the side portion 4c is not provided, a rotation preventing portion 4a in which the rear end portion 4b is cut out in a rectangular shape is provided. When the rotation preventing portion 1 f of the filling member 1 is fitted to the rotation preventing portion 4 a, the rotation of the extrusion portion 4 with respect to the filling member 1 is prevented. On the rear side of the rear end portion 4b of the pushing portion 4, a concave portion 4k for receiving the front end protruding portion 34 of the moving body 3 is provided. Further, a projecting portion 4m that projects annularly around the recess 4k is provided on the rear side of the rear end portion 4b.

  On the outer peripheral surface of the side portion 4c of the pushing portion 4, two first sliding portions 4d that slide on the inner peripheral surface of the filling member 1 and one second sliding portion 4e are provided. Yes. The first sliding portions 4d are provided at two positions in the circumferential direction, and the second sliding portions 4e are positioned between the two first sliding portions 4d in the circumferential direction. Thus, by providing the two first sliding portions 4d and the one second sliding portion 4e, the balance of the extrusion portion 4 that slides on the inner peripheral surface of the filling member 1 is ensured. The first sliding portion 4d protrudes radially outward from the outer peripheral surface of the side portion 4c and has an elliptical shape extending in the circumferential direction. Moreover, the side part 4c in the position where the 1st sliding part 4d is provided has the inclined surface 4f which inclines back gradually as it goes to the rotation prevention part 4a side.

  The 2nd sliding part 4e of the extrusion part 4 is provided in the front-end protrusion part 4g which protrudes ahead rather than the periphery at the side part 4c. The second sliding portion 4e protrudes radially outward from the outer peripheral surface of the front end protruding portion 4g. The second sliding part 4e has an oval shape extending in the circumferential direction. Further, two notches 4h extending rearward are formed on both sides of the second sliding portion 4e (front end protruding portion 4g) when the extruded portion 4 is viewed from the front. Due to these notches 4h, the second sliding portion 4e (front end protruding portion 4g) has elasticity in the radial direction. Further, in each notch 4h of the pushing portion 4, a recess 4j that is cut out in a semicircular shape so as to face each other is formed. Since the base side (rear side) of the front end protrusion 4g is narrowed by these two recesses 4j, the elasticity of the second sliding portion 4e (front end protrusion 4g) in the radial direction is further enhanced. .

  15 is a cross-sectional view taken along line EE in FIG. 11 (a), FIG. 16 is a cross-sectional view in which the periphery of a cutout portion 10 to be described later is enlarged, and FIG. FIG. 18 is a cross-sectional perspective view showing a state in which the movable body 3 moves forward together with the pushing portion 4.

  As shown in FIGS. 15 and 16, in the initial state, the moving body 3 and the pushing portion 4 are connected via two cut portions 10 that are cut before use. That is, the movable body 3 and the pushing portion 4 are integrally formed so as to be connected to each other via the cutout portion 10 that is weaker than the surroundings. Here, being weaker than the surroundings means that the shape or material is weaker than the surroundings and weak and easy to cut, for example, it is thinner than the surroundings.

  The cut-out part 10 is provided at a circumferentially equal position. The cut portion 10 connects the front end protruding portion 34 of the moving body 3 and the protruding portion 4 m of the pushing portion 4. The cut portion 10 extends from a position on the outer peripheral side at the front end of the front end protruding portion 34 to the inner peripheral side of the protruding portion 4m, and a space S is formed between the front end protruding portion 34 and the recess 4k. . The thickness of the cut portion 10 increases from the front end protruding portion 34 toward the protruding portion 4m as viewed from the axial direction. Therefore, since the cut portion 10 on the moving body 3 side is thinner than the cut portion 10 on the extruding portion 4 side, each cut portion 10 extends at the time of cutting, and at the end of the cut portion 10 on the moving body 3 side. Stress is concentrated. Therefore, the end of the cut portion 10 on the moving body 3 side is cut.

  Since the cutout portion 10 is thinner than the surroundings (the front end protruding portion 34 and the protruding portion 4m), as shown in FIGS. 17 and 18, the relative rotation between the moving body 3 and the pushing portion 4 is accompanied. It can be easily cut. After the cut part 10 is cut, the moving body 3 moves forward while rotating with respect to the pushing part 4, and the space S gradually decreases. And the front end of the front-end protrusion part 34 of the moving body 3 contact | abuts to the recessed part 4k of the extrusion part 4, and the movement body 3 and the extrusion part 4 advance together after that.

  FIG. 19 is a cross-sectional view showing the cap 8 of the applicator 100. As shown in FIG. 19, the cap 8 has a bottomed cylindrical shape that opens rearward, and a plurality of ribs 8a extending in the axial direction are arranged in parallel along the circumferential direction on the inner circumferential surface thereof. Yes. The rib 8a has a raised portion 8b that is provided on the front end side thereof and is raised so as to protrude radially inward, and an inclined portion 8d that continues behind the raised portion 8b via a step 8c. In the inclined portion 8d, the top surface 8e is inclined outward in the radial direction as it goes rearward. Here, the inclined portion 8d is inclined at an inclination angle corresponding to the outer peripheral surface of the filling member 1.

  As shown in FIGS. 1 and 19, the cap 8 is extrapolated to the filling member 1 and the operation cylinder 2 in the initial state or when not in use, for example, so as to be integrated with the operation cylinder 2. Removably mounted. At this time, in the cap 8, the front end of the filling member 1 is close to the step 8c of the rib 8a, and the outer peripheral surface of the filling member 1 is close to the inclined portion 8d of the rib 8a. In this way, the cap 8 can hold the filling member 1. Moreover, even if an external impact such as dropping is applied, the cap 8 can suppress the movement of the filling member 1 toward the tip side and the movement in the lateral direction (cross direction of the axial direction). Disassembly and breakage can be prevented, and the coating material M can be protected.

  Here, in this embodiment, as shown in FIG. 6 and FIG. 10, the state before the inner cylindrical part 2 b of the operation cylinder 2 is inserted into the rear end cylindrical part 5 c of the screw cylinder 5 (state before assembly). ), The inner diameter R1 of the tip of the other protrusion 6b is shorter than the outer diameter R2 of the outer peripheral surface 2c of the inner cylindrical portion 2b. For example, the inner diameter R1 is shorter than the outer diameter R2 by a predetermined length, the inner diameter R1 is 7.8 mm, and the outer diameter R2 is 8.4 mm.

  And as FIG. 1 shows, in the state (state after an assembly) in which the internal cylindrical part 2b of the operation cylinder 2 was inserted in the rear-end cylinder part 5c of the screw cylinder 5, the other protrusion 6b is It is always in contact with the outer peripheral surface 2c of the inner cylindrical portion 2b. Accordingly, the inner cylindrical portion 2b of the operation cylinder 2 is held by the rear end cylindrical portion 5c of the screw cylinder 5, and a resistance in the rotational direction is constantly generated between the inner cylindrical portion 2b and the rear end cylindrical portion 5c. Will be.

  Further, as described above, the one protrusion 6 a and the other protrusion 6 b constitute the ratchet mechanism 6. Specifically, as shown in FIG. 6, one protrusion 6 a has one circumferential side (the other protrusion 6 b when the filling member 1 and the operation cylinder 2 are relatively rotated in one direction, The side surface 6a1 on the abutting side is inclined with respect to the outer peripheral surface 2c of the inner cylindrical portion 2b so as to have a mountain shape. Further, the side surface 6a2 on the other side in the circumferential direction of the one projecting portion 6a (the side that contacts the other projecting portion 6b when the filling member 1 and the operation tube 2 are relatively rotated in the other direction) is an inner cylindrical portion. It is formed to be substantially perpendicular to the outer peripheral surface 2c of 2b.

  In the applicator 100 configured as described above, use confirmation is performed by an operator after the applicator 100 is assembled, for example. Here, when the applicator 100 is assembled, the moving body 3 and the pushing portion 4 are integrally formed and are connected to each other by the cutout portion 10. In this use confirmation, in the initial state shown in FIG. 1, the cap 8 is removed by the operator, and the filling member 1 and the operation cylinder 2 are relatively rotated in one direction which is the feeding direction.

  At this time, the filling member 1 and the screw cylinder 5 are engaged with each other so as to be able to rotate synchronously, and the first sliding portion 4d and the second sliding portion 4e of the pushing portion 4 are in contact with the inner peripheral surface of the filling member 1. In addition, since the operation cylinder 2 and the moving body 3 are engaged with each other so as to be able to rotate synchronously, when the filling member 1 and the operation cylinder 2 are rotated relative to each other, the moving body 3 tries to rotate relative to the pushing portion 4. To do. Then, since the cutout part 10 which connects the mobile body 3 and the extrusion part 4 is weaker than the circumference | surroundings, it is extended with the said relative rotation and fracture | ruptures as shown in FIG. Since the cut portion 10 makes a sound when it is broken, the worker can grasp the break of the cut portion 10.

  Since the moving body 3 rotates relative to the pushing portion 4 and moves forward, the front end protrusion 34 of the moving body 3 abuts against the recess 4k of the pushing portion 4 while rotating, and thereafter the moving body 3 and the pushing portion. 4 goes forward together. As shown in FIG. 1 and FIG. 2, the moving body 3 and the pushing portion 4 are engaged with the screwing action of the screwing portion 7 constituted by the female screw 71 of the screw cylinder 5 and the male screw 72 of the moving body 3, and the operation. The cylinder 2 moves forward with respect to the operation cylinder 2 and the screw cylinder 5 by cooperation with the rotation stopper constituted by the protrusion 2e of the cylinder 2 and the protrusion 32 of the movable body 3. And the coating material M with which the filling area | region 1a of the filling member 1 was filled is discharged from the opening part 1b.

  During the relative rotation, one protrusion 6a and the other protrusion 6b of the ratchet mechanism 6 are engaged in the rotation direction, and the other elastic force in the radial direction by the notch 55 (see FIG. 8) Since the protrusion 6b is urged in the radial direction, engagement and disengagement (meshing and meshing release) of the one protrusion 6a and the other protrusion 6b are repeated. That is, the side surface 6a1 (see FIG. 6) of one protrusion 6a slides so as to engage with the side surface 6b1 (see FIG. 10) of the other protrusion 6b in the rotational direction. And after one protrusion 6a gets over the other protrusion 6b and the said engagement is cancelled | released, it engages in a rotation direction again. As a result, a click feeling is given to the operator who confirms the use each time the one protrusion 6a and the other protrusion 6b are engaged and disengaged.

  On the other hand, even if the filling member 1 and the operation cylinder 2 are about to rotate relative to each other in the rewinding direction, the side surface 6a2 (see FIG. 6) of one projection 6a is the side surface 6b2 (FIG. 10) of the other projection 6b. The rotation of the screw cylinder 5 and the operation cylinder 2 is restricted. As a result, the filling member 1 and the operation cylinder 2 do not rotate in the other direction (the rotation can be prevented with a rotational force (torque) below the setting).

  As described above, in the applicator 100 according to the present embodiment, as illustrated in FIG. 11, the extruding unit 4 for extruding the applying material M and the moving body 3 are integrally formed. Thus, since the extrusion part 4 and the moving body 3 are integrally shape | molded, a number of parts can be reduced. In addition, the number of molds for manufacturing each component is reduced, and it is also possible to easily manage the components. This facilitates manufacturing and contributes to cost reduction during manufacturing.

  Furthermore, the extrusion part 4 and the moving body 3 are connected to each other via a cutout part 10, and the cutout part 10 is more fragile than the surroundings. Therefore, with the relative rotation between the filling member 1 and the operation cylinder 2, the cut portion 10 that connects the pushing portion 4 and the moving body 3 can be easily cut. Further, when the cut portion 10 is cut, the pushing portion 4 comes into contact with the moving body 3 and moves forward together with the moving body 3. Here, in the state where the cut-out part 10 is cut, the extruding part 4 and the moving body 3 are separated from each other, and the extruding part 4 and the moving body 3 can rotate relative to each other. Even if it does, the extrusion part 4 which extrudes the coating material M does not rotate. Accordingly, it is possible to prevent the coating material M from rotating when the push-out portion 4 moves forward.

  Moreover, since the cutout part 10 is thinner than the circumference | surroundings, the cutout part 10 can be shape | molded easily. Furthermore, the cut-out portions 10 are arranged in parallel at two locations along the rotation direction of the filling member 1 and the operation cylinder 2. Therefore, the connection between the extrusion unit 4 and the moving body 3 can be stabilized as compared with the case where the number of the cut-out units 10 is one. Moreover, by making the number of the cut parts 10 into plural, it can suppress that the cut parts 10 are cut | disconnected unintentionally at the time of manufacture of the applicator 100. FIG.

  As shown in FIGS. 1 and 14, the outer surface of the pushing portion 4 is provided with a rotation preventing portion 4 a that prevents the pushing portion 4 from rotating relative to the filling member 1, and the rotation preventing portion is also provided on the inner surface of the filling member 1. 1f is provided. Therefore, since the rotation of the extruding part 4 that extrudes the coating material M is prevented, the extruding part 4 and the moving body 3 are relatively rotated when the cut part 10 is cut, and the cut part 10 can be cut reliably.

  Further, the rotation preventing portion 1f provided on the inner surface of the filling member 1 extends in the axial direction on the rear side of the filling region 1a. Here, if the anti-rotation portion extends to the front side of the filling region, when the filled coating material M appears from the opening 1b of the filling region 1a during use, the shape of the coating material is indented. It is thought that it will occur. Therefore, if the rotation preventing portion 1f is arranged on the rear side of the filling region 1a as in the present embodiment, it is possible to avoid the dent in the coating material M filled in the filling region 1a.

  A first sliding portion 4 d and a second sliding portion 4 e that are in contact with the inner surface of the filling member 1 are provided on the outer surface of the pushing portion 4. Accordingly, the first sliding portion 4d and the second sliding portion 4e abut against the inner surface of the filling member 1, and the pushing portion 4 is prevented from rotating on the inner surface of the filling member 1 and slides in the axial direction. Accordingly, the rotation of the coating material M is prevented, and the coating material M is pushed out in the axial direction. Further, for example, as shown in FIG. Even when an impact is applied in a state where the amount of the coating material M is reduced or in a state where the coating material M is eliminated, it is possible to avoid a situation in which the pushing portion 4 is detached from the filling member 1.

  Further, as shown in FIG. 12, the position of the cut-out portion 10 when viewed from the axial direction, and the contact position between the movable body 3 and the pushing portion 4 when viewed from the axial direction (the front end protruding portion 34 and the concave portion). 4k) is shifted in the radial direction. Therefore, since the cut part of the cut-out part 10 does not contact when the moving body 3 and the pushing part 4 are advanced, the moving body 3 and the pushing part 4 can be smoothly rotated and moved forward.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It changed within the range which does not change the summary described in each claim, or was applied to another thing. May be. That is, the shape and arrangement mode of each component constituting the applicator 100 can be appropriately changed without changing the gist.

  In the above-described embodiment, the example in which the cutout portion 10 that is weaker than the surrounding is thinner than the surrounding is described, but the aspect of the cutout portion is not limited to the above-described embodiment. For example, instead of the cut portion 10 that is thinner than the surrounding, a cut line that is easier to cut than the surrounding can be used as the cut portion. Further, the shape of the cutout portion is not limited to the above embodiment, and for example, a cutout portion extending over the entire circumference in the circumferential direction may be used. Furthermore, the number of cutouts is not limited to the above embodiment, and for example, one or three or more cutouts may be provided.

  Moreover, although the said embodiment demonstrated the extrusion part 4 provided with the two 1st sliding parts 4d and the one 2nd sliding part 4e, the arrangement | positioning aspect and number of sliding parts can be changed suitably. Furthermore, the shape of the extruded portion itself can be changed as appropriate.

  Moreover, in the said embodiment, although the operator cut | disconnected the cutting part 10 at the time of use confirmation, the user of the applicator 100 may cut | disconnect the cutting part 10. FIG.

DESCRIPTION OF SYMBOLS 1 ... Filling member (container front part), 1a ... Filling area, 1f ... Anti-rotation part, 2 ... Operation cylinder (container rear part), 3 ... Moving body, 4 ... Extrusion part, 4a ... Anti-rotation part, 4d ... 1st Sliding part (sliding part), 4e ... second sliding part (sliding part), 5 ... screw cylinder (screwing member), 7 ... screwing part, 10 ... cutting part, 71 ... female screw, 72 ... Male screw, 100 ... applicator, M ... applicator.

Claims (6)

Inside the container including the container front part and the container rear part, comprising an extruding part for extruding the coating material, a moving body and a screwing member, and by relatively rotating the container front part and the container rear part in one direction, An applicator in which the screwing action of the screwing portion of the moving body and the screwing member works to advance the moving body and the pushing portion,
The extruding part and the moving body are integrally formed so as to be connected to each other via a cut-out part made weaker than the surroundings,
When the container front portion and the container rear portion are relatively rotated, the cut portion is cut, the moving body abuts on the pushing portion, and the moving body advances together with the pushing portion ,
The position of the cut-out portion when viewed from the axial direction of the container and the contact position between the movable body and the extrusion portion when viewed from the axial direction are shifted in the radial direction. Applicator.   The applicator according to claim 1, wherein the cut-out portion is thinner than the surrounding area.   The applicator according to claim 1 or 2, wherein the cut portions are arranged in parallel along a rotation direction of the container. The container front has a cylindrical shape,
The rotation prevention part which prevents rotation of the said extrusion part with respect to the said container front part is provided in the outer surface of the said extrusion part, and the inner surface of the said container front part, The any one of Claims 1-3 characterized by the above-mentioned. The applicator according to one item. Inside the container front portion, a filling region filled with the coating material is provided,
The applicator according to claim 4, wherein the rotation preventing portion provided on the inner surface of the container front portion extends in the axial direction of the container front portion on the rear side of the filling region.   The applicator according to any one of claims 1 to 5, wherein a sliding portion that comes into contact with an inner surface of the container front portion is provided on an outer surface of the extrusion portion.

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