JP5296742B2 - Coating material extrusion container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating material-extruding container excluding and drawing back a coating material with high accuracy. <P>SOLUTION: This coating material-extruding container 100 includes: a filling member 1 filled with the coating material M; and a piston 7 inserted into the filling member 1 and airtightly contacting with the filling member 1. The advancing and retreating piston 7 includes: a ventilation part 110 ventilating air A between the coating material M and the piston 7 such that the air A is discharged; and a valve mechanism 111 opening/closing the air ventilation of the ventilation part 110. In the coating material-extruding container 100, because the air ventilation of the ventilation part 110 is opened by the valve mechanism 111 in piston 7 advance to discharge the air A between the coating material M and the piston 7, it can be suppressed that bad influence extends over the piston 7 advance by the air A. Because the air ventilation of the ventilation part 110 is closed by the valve mechanism 111 in piston 7 retreat to suitably maintain an airtight state between the coating material M and the piston 7, sucking effect by decompression can be certainly exerted. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

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

  As a conventional coating material extrusion container, what is described, for example in patent document 1 is known. In this coating material extruding container, when the main body cylinder and the operation cylinder are relatively rotated in one direction, the push-out portion moves forward, the coating material filled in the filling member is pushed out, and the coating material is pushed to the front end of the filling member. Infested from the side opening. On the other hand, when the main body cylinder and the operation cylinder are relatively rotated in the other direction, which is the opposite direction of one direction, the extruding part moves backward, and the suction action (adhesion should be maintained) between the extruding part and the coating material. And the coating material is pulled back and immersed in the opening.

  In such a coating material extruding container, when the filling member filled with the coating material and the pushing member are assembled, the pushing member may be inserted into the filling member so as to be in close contact with each other. In this case, if air is present between the coating material and the extrusion member, the assembly amount is reduced as the filling amount of the coating material is reduced by that amount, as disclosed in Patent Documents 1 and 2, for example. In this case, a ventilation portion for releasing air between the coating material and the extrusion member may be provided.

JP 2007-289420 A JP 2006-204415 A

  Here, in the coating material extruding container as described above, it is difficult in manufacturing to completely eliminate the air between the coating material and the extruding part at the time of assembly, and for some reason even after manufacturing. There is a possibility that air may flow between the coating material and the extruded portion. Thus, when air exists between the coating material and the extruding part, even if the extruding part is advanced, for example, the appearance delay (time lag) of the coating material may occur due to the compressibility of the air. There is a possibility that the coating material cannot be extruded accurately. On the other hand, it is desired that when the push-out portion is retracted, the suction action is reliably exhibited and the coating material is pulled back with high accuracy.

  Then, this invention makes it a subject to provide the coating material extrusion container which can extrude and pull back a coating material accurately.

  In order to solve the above problems, the coating material extrusion container according to the present invention includes a filling member filled with the coating material, and an extrusion unit that is inserted into the filling member and is in close contact with the filling member so as to be airtight. An extrusion material extruding container in which the extruding part moves forward and backward, and a ventilation part that circulates air between the coating material and the extruding part in the filling member, and an air flow in the aeration part when the extruding part advances. And a valve mechanism that closes the air flow in the ventilation portion when the push-out portion is retracted.

  In the coating material extruding container, since the air flow in the ventilation portion is opened by the valve mechanism when the extrusion portion moves forward, the air between the coating material and the extrusion portion can be released. It becomes possible to suppress an adverse effect on the advance of the extrusion unit, and the coating material can be extruded with high accuracy. On the other hand, since the air flow in the ventilation part is closed by the valve mechanism when the extrusion part is retracted, the sealed state between the extrusion part and the coating material can be suitably maintained. Thus, the coating material can be pulled back with high accuracy.

  Further, it is preferable that the valve mechanism opens the air flow when the push-out section is stopped. In this case, for example, when the coating material extruding container is stored, the air between the coating material and the extruding part can escape, so that the air between the coating material and the extruding part expands due to the temperature rise, and the coating material becomes It is possible to prevent unintentional infestation.

  Further, it is preferable that the valve mechanism closes the air flow when the pushing section is stopped. In this case, for example, when the coating material extruding container is stored, since the sealed state between the coating material and the extrusion portion can be maintained, volatilization of the coating material can be prevented.

  Here, as a configuration that preferably exhibits the above-described operational effects, specifically, it further includes a moving body that advances and retreats the push-out portion, the push-out portion has a recessed portion that opens to the rear side, and the ventilation portion has a push-out portion. Is a through hole that allows the front side of the part to communicate with the inside of the recessed part, and the moving body is inserted into the recessed part at the front end, and the valve mechanism moves with the valve seat part provided on the inner surface of the recessed part of the pushing part. And a valve body portion provided at the front end of the body.

  Further, the moving body has a bottomed cylindrical shape with the front side closed, and includes a flange portion that contacts the rear end surface of the extrusion portion when the extrusion portion moves forward, and the front surface of the flange portion extends along the radial direction. It is preferable that the groove part extended is formed. In this case, in the state where the air flow of the ventilation part by the valve mechanism is opened when the push-out part advances, the air between the coating material and the push-out part is positively moved outward in the radial direction of the moving body through the groove part. Can be escaped.

  Moreover, it is preferable that a through hole is formed in the outer surface of the front end portion of the moving body so as to circulate air into the moving body when the push-out portion moves forward. In this case, the air between the coating material and the extrusion part is positively introduced into the space in the moving body through the through hole in the state where the air flow of the ventilation part by the valve mechanism is opened when the extrusion part advances. Can escape.

  According to the present invention, it is possible to accurately extrude and pull back the coating material.

It is a longitudinal cross-sectional view which shows the initial state of the coating material extrusion container which concerns on 1st Embodiment of this invention. (A) is a longitudinal cross-sectional view which shows the state at the time of piston advance in the coating material extrusion container of FIG. 1, (b) is a longitudinal cross-sectional view which shows the state at the time of piston retraction in the coating material extrusion container of FIG. It is a longitudinal cross-sectional view which shows the state of the piston advance limit in the coating material extrusion container of FIG. It is a disassembled perspective view which shows the operation cylinder of the coating material extrusion container of FIG. It is a perspective view which shows the soft part in the rotation stopper cylinder of the coating material extrusion container of FIG. It is a perspective view which shows the hard part in the rotation stopper cylinder of the coating material extrusion container of FIG. It is a perspective view which shows the moving screw cylinder of the coating material extrusion container of FIG. It is a perspective view which shows the moving body of the coating material extrusion container of FIG. It is a cross-sectional perspective view along IX-IX of FIG. It is a cross-sectional perspective view which shows the piston of the coating material extrusion container of FIG. It is a figure for demonstrating the manufacture procedure of a coating material extrusion container. FIG. 2 is a partially enlarged view of the coating material extruding container of FIG. 1. FIG. 3 is a partially enlarged view of the coating material extruding container of FIG. FIG. 3 is a partially enlarged view of the coating material extruding container of FIG. It is a partially expanded longitudinal cross-sectional view which shows the state at the time of piston retraction of the coating material extrusion container which concerns on 2nd Embodiment of this invention. It is a perspective view which shows a part of moving body of the coating material extrusion container of FIG. It is a cross-sectional perspective view along the XVII-XVII line of FIG. It is a partially expanded longitudinal cross-sectional view which shows the state at the time of the storage of the coating material extrusion container which concerns on 3rd Embodiment of this invention.

  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.

  1 is a longitudinal sectional view showing an initial state of a coating material extruding container according to a first embodiment of the present invention, FIG. 2 (a) is a longitudinal sectional view showing a state when a piston is advanced in the coating material extruding container of FIG. 2B is a longitudinal sectional view showing a state when the piston is retracted in the coating material extruding container of FIG. 1, and FIG. 3 is a longitudinal sectional view showing a state of the piston advance limit in the coating material extruding container of FIG. As shown in FIG. 1, the coating material extruding container 100 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.

  The coating material extruding container 100 includes a filling member 1 that is a tip cylinder provided with a filling region 1x filled with the coating material M, and a second half portion of the filling member 1 inserted in the front half portion of the filling member 1. A main body cylinder 2 that is engaged and connected in an axial direction and a rotation direction around the axis (hereinafter also simply referred to as a “rotation direction”), and a rear end portion of the main body cylinder 2 that is rotatable relative to the main body cylinder 2. And the operation cylinder 3 is configured as an outer configuration. The filling member 1 and the main body cylinder 2 constitute a container front part, and the operation cylinder 3 constitutes a container rear part. The “axis” means a center line extending in the front-rear direction of the coating material extruding container 100 (hereinafter the same).

  The coating material extruding container 100 includes a rotation stopper cylinder 4, a moving screw cylinder 5, a moving body 6, and a piston (extrusion part) 7 inside. The rotation stop cylinder 4 is rotatable relative to the main body cylinder 2 and engages in the axial direction. The moving screw cylinder 5 is engaged with the main body cylinder 2 so as to be able to rotate synchronously and move in the axial direction, and is screwed to the rotation stopper cylinder 4 via the first screwing portion 8. The movable body 6 is engaged with the operation cylinder 3 so as to be capable of synchronous rotation and axial movement, and is screwed into the moving screw cylinder 5 via the second screwing portion 9. The piston 7 is attached to the front end (tip) portion of the moving body 6 to form the rear end of the filling region 1x.

  In this coating material extruding container 100, when the main body cylinder 2 (or the filling member 1 is acceptable) and the operation cylinder 3 are relatively rotated in one direction, as shown in FIG. It moves forward, and the moving body 6 moves forward with the moving screw cylinder 5, and at the same time, moves forward alone, and the piston 7 moves forward. When the main body cylinder 2 and the operation cylinder 3 are further rotated relative to each other in the same direction after the moving screw cylinder 5 reaches the advance limit, the moving body 6 advances alone and the piston 7 advances. On the other hand, as shown in FIG. 2 (b), when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in the other direction, the moving screw cylinder 5 moves backward by a certain amount, and the moving body 6 moves along with the moving screw cylinder 5. At the same time, the piston 7 is retracted at the same time, and the piston 7 is retracted. When the main body cylinder 2 and the operation cylinder 3 are further rotated relative to each other in the same direction after the movable screw cylinder 5 reaches the retreat limit, the movable body 6 retreats alone and the piston 7 retreats.

  Further, the coating material extruding container 100 includes a ventilation portion 110 through which air flows to release the air A between the coating material M and the piston 7, and a valve mechanism 111 that opens and closes the air circulation of the ventilation portion 110. ing. The ventilation part 110 distribute | circulates the air A of the space between the coating material M in the filling member 1 and the piston 7 back so that it may escape outside space. The valve mechanism 111 opens the air flow of the vent 110 when the piston 7 moves forward, and closes the air flow of the vent 110 when the piston 7 moves backward.

  As shown in FIG. 1, the main body cylinder 2 is formed of, for example, an ABS resin (acrylonitrile / butadiene / styrene copolymer synthetic resin) and has a cylindrical shape. The main body cylinder 2 is configured so that the filling member 1 and the moving screw cylinder 5 are engaged with each other on the inner peripheral surface of the central portion in the axial direction in the rotation direction. It has a knurled 2a extending a predetermined length in the axial direction. Further, on the inner peripheral surface of the front end portion of the main body cylinder 2, an annular concavo-convex portion (where the concavo-convex portions are arranged in the axial direction) 2 b for engaging the filling member 1 in the axial direction is provided.

  An arcuate convex portion 2c extending in the circumferential direction along the inner peripheral surface on the inner peripheral surface of the rear portion side of the main body cylinder 2 on the rear side of the knurled 2a, assuming that the rotation stopper cylinder 4 is engaged in the axial direction. Are formed in a pair so as to face each other. Furthermore, on the rear side of the arcuate convex portion 2c on the inner peripheral surface of the main body cylinder 2, the arcuate convex portion extending in the circumferential direction along the inner peripheral surface is assumed to engage the operation cylinder 3 in the axial direction. A pair of portions 2d are formed so as to face each other. These arc-shaped convex portions 2c and 2d are provided intermittently in the circumferential direction so as not to overlap each other when viewed in the axial direction.

  4 is an exploded perspective view showing an operation cylinder of the coating material extruding container of FIG. As shown in FIG. 4, the operation cylinder 3 includes a main body portion 31, a bottomed cylindrical tail plug portion 38 that is extrapolated to the rear end portion of the main body portion 31, and a circle provided in the tail plug portion 38. And a columnar weight portion 39. The main body 31 includes, for example, a cylindrical portion 31x that is formed of ABS resin and has a bottomed cylindrical shape, and a shaft body 31y that is erected at the center of the bottom of the cylindrical portion 31x toward the front end side. ing.

  An annular convex portion 32 that is engaged with the main body tube 2 in the axial direction and abuts against the rear end of the rotation stop tube 4 is provided at the front portion of the outer peripheral surface of the tube portion 31x. In addition, an annular flange 33 is provided at the center of the outer peripheral surface of the cylindrical portion 31x as a contact with the rear end surface of the main body cylinder 2. Furthermore, a convex portion 34 for engaging the tail plug portion 38 in the axial direction and a groove portion 35 for engaging the tail plug portion 38 in the rotational direction are provided at the rear end portion of the cylindrical portion 31x. Yes.

  This cylinder part 31x has the some convex part 36 which comprises a ratchet tooth. The convex portion 36 is provided so as to be engaged with a convex portion 44 (described later) of the rotation stopper cylinder 4 and protrudes radially outward on the front side of the outer peripheral surface of the cylindrical portion 31x. Here, the convex portions 36 are provided at equal circumferential positions on the outer peripheral surface so as to have a sawtooth shape in the circumferential direction.

  A side surface 36a on one side in the circumferential direction of these convex portions 36 (the side abutting on the convex portion 44 of the rotation stopper cylinder 4 when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in the other direction) has a mountain shape. As shown in FIG. On the other hand, the side surface 36b on the other side in the circumferential direction of the convex portion 36 (the side that contacts the convex portion 44 of the rotation stopper cylinder 4 when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in one direction) is on the outer circumferential surface. On the other hand, it is configured to incline in the same direction as the side surface 36a and enter the inner side in the circumferential direction.

  The shaft body 31y has a non-circular outer shape. Specifically, the shaft body 31y has a cross-sectional non-circular shape including protrusions 37 that are arranged on the outer peripheral surface of the cylindrical body so as to protrude radially outward at six circumferential positions and extend in the axial direction. Has been.

  The tail plug portion 38 is formed of, for example, ABS resin, and is attached to the main body portion 31 so as to be synchronously rotatable and not movable in the axial direction so as to cover the rear portion of the main body portion 31. The weight portion 39 is made of metal and is disposed between the main body portion 31 and the tail plug portion 38 so as to be covered with the tail plug portion 38. The weight portion 39 can give a sense of weight to the entire coating material extruding container 100, and can enhance a sense of quality.

  As shown in FIGS. 1 and 4, the operation cylinder 3 including the main body portion 31, the tail plug portion 38 and the weight portion 39 is inserted into the main body tube 2 at the front side of the main body portion 31, and the collar portion 33 is the main body tube. 2 is abutted against the rear end surface, and the annular convex portion 32 of the main body portion 31 is engaged with the arc-shaped convex portion 2d of the main body cylinder 2 in the axial direction so that it can be rotated relative to the main body cylinder 2 in the axial direction. Connected and mounted.

  FIG. 5 is a perspective view showing a soft part in the rotating cylinder of the coating material extruding container of FIG. 1, and FIG. 6 is a perspective view showing a hard part of the rotating cylinder of the coating material extruding container of FIG. The rotation stopper cylinder 4 includes a soft portion 104 and a hard portion 105 that is externally fixed to the front side of the soft portion 104 (see FIG. 1).

  As shown in FIG. 5, the soft portion 104 includes a cylindrical small-diameter portion 104x located on the front side thereof, and a cylindrical large-diameter portion 104y continuous via a step surface 104p on the rear side of the small-diameter portion 104x, have. The small-diameter portion 104x has a plurality of protrusions 41 as female screws that are provided on the front side of the inner peripheral surface and that constitute the first screwing portion 8 with a lead of 12 mm and a pitch of 2 mm. These ridges 41 extend spirally along the inner peripheral surface, and the ends of the adjacent ridges 41 are spaced apart from each other in the axial direction. Further, six ridges 41 are provided intermittently so as not to overlap each other when viewed in the axial direction.

  The large diameter portion 104y has a plurality of convex portions 44 that constitute ratchet teeth. The convex portion 44 projects inwardly in the radial direction on the rear side of the inner circumferential surface of the large diameter portion 104y as being engaged with the convex portion 36 of the operation cylinder 3 in the circumferential direction. Here, the convex portions 44 are provided at four equal positions in the circumferential direction on the inner circumferential surface so as to have a sawtooth shape in the circumferential direction.

  The side surface 44a on the other side in the circumferential direction of these convex portions 44 (the side abutting on the convex portion 36 of the operation cylinder 3 when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in the other direction) is formed in a mountain shape. It is inclined with respect to the outer peripheral surface. On the other hand, the side surface 44b on one side in the circumferential direction of the convex portion 44 (the side abutting on the convex portion 36 of the operation cylinder 3 when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in one direction) It is configured to incline in the same direction as the side surface 44a and enter the inner side in the circumferential direction.

  The soft portion 104 is softer than the moving screw cylinder 5 and the operation cylinder 3. Specifically, the soft portion 104 is formed of a material softer than POM (polyacetal) which is a material of the moving screw cylinder 5 and softer than ABS resin which is a material of the operation cylinder 3, Injection molded with a thermoplastic elastomer. As the thermoplastic elastomer, any of polyester, polystyrene, polyolefin, and the like can be used.

  As shown in FIG. 6, the hard portion 105 has a cylindrical shape, and the inner diameter thereof is made equal to the outer diameter of the small diameter portion 104 x of the soft portion 104. An annular convex portion 106 for engaging with the main body cylinder 2 in the axial direction is provided at the rear end portion of the outer peripheral surface of the hard portion 105. Further, an annular convex portion 107 is provided at the front end portion of the inner peripheral surface of the hard portion 105 to restrict the insertion direction with respect to the soft portion 104 (that is, to prevent the front and rear direction from being reversed). Yes.

  The hard portion 105 is harder than the soft portion 104. Specifically, the hard portion 105 is injection-molded with POM, ABS resin, or HDPE (high density polyethylene), and has a higher hardness than the soft portion 104. Then, as shown in FIG. 1, the hard portion 105 has a small-diameter portion of the soft portion 104 until the rear end surface 105a (see FIG. 8) contacts the step surface 104p with the annular convex portion 107 positioned on the front side. 104x is extrapolated, fitted and fixed (fixed).

  As shown in FIGS. 1, 5, and 6, the rotation-stop cylinder 4 including the soft portion 104 and the hard portion 105 is inserted into the main body cylinder 2 from the front side, and the annular convex portion 106 is the arc-shaped convex portion of the main body cylinder 2. The portion 2c is engaged in the axial direction. Further, the rotation stopper cylinder 4 has a rear side thereof extrapolated to the main body 31 of the operation cylinder 3, and a rear end surface of the rotation stopper cylinder 4 butted against an annular convex portion 32 (see FIG. 4). Thereby, the rotation stop cylinder 4 is clamped in the axial direction, is relatively rotatable with respect to the main body cylinder 2, and is engaged and mounted in the axial direction.

  At the same time, the rotation stopper cylinder 4 is engaged with the convex portion 44 of the soft portion 104 in contact with the convex portion 36 of the operation cylinder 3 in the rotation direction (circumferential direction). A predetermined engaging force is generated between the convex portion 44 and the convex portion 36 by, for example, an elastic force (flexibility) due to the flexibility of the soft portion 104. Thereby, the operation cylinder 3 and the rotation stop cylinder 4 can be synchronously rotated when they are relatively rotated in one direction, and can be synchronously rotated when a small rotational force is applied when they are relatively rotated in the other direction. At the same time, when a large rotational force is applied, relative rotation is possible (details will be described later).

  FIG. 7 is a perspective view showing a moving screw cylinder of the coating material extruding container of FIG. As shown in FIG. 7, the moving screw cylinder 5 is formed of, for example, POM and has a cylindrical shape. The front end portion 5x of the moving screw cylinder 5 is configured to be able to expand radially outward by a pair of slits 51 that extend in the axial direction from the front end and face each other. A plurality (four in this case) of convex portions 52 are provided at positions near the slit 51 on the front side of the outer peripheral surface of the front end portion 5x to adjust the outer diameter of the front end portion 5x.

  Further, a female screw 53 (see FIG. 13) that constitutes the second screwing portion 9 is provided in a region extending from the front end to a predetermined length on the inner peripheral surface of the front end portion 5x. Here, the pitch of the second screwing portion 9 is finer than the pitch of the first screwing portion 8, and the lead of the first screwing portion 8 (the main body cylinder 2 and the operation cylinder 3). The amount of propulsion per rotation relative to the second screw 9 is set larger than the lead of the second screwing portion 9.

  Further, an annular flange 54 is provided on the rear side of the outer peripheral surface of the central portion of the moving screw cylinder 5. A plurality of ridges 55 extending along the axial direction are provided on the outer peripheral surface of the flange portion 54 so as to be engaged with the knurling 2 a of the main body cylinder 2. Further, on the outer peripheral surface of the rear end portion of the moving screw cylinder 5, a protrusion 56 as a male screw constituting the first screwing portion 8 is provided. These ridges 56 are provided on a pair of opposed portions facing each other across the axis on the outer peripheral surface. That is, it is provided intermittently so as to extend in a spiral shape only at the facing portion.

  As shown in FIGS. 1 and 7, the moving screw cylinder 5 is inserted into the main body cylinder 2, and the protrusion 55 engages with the knurled 2 a of the main body cylinder 2, so that the main cylinder 2 is rotated in the rotational direction. It is engaged and mounted so as to be movable in the axial direction. The moving screw cylinder 5 is configured to be extrapolated to the shaft body 31 y of the operation cylinder 3, and the protrusion 56 at the rear end thereof is screwed with the protrusion 41 of the soft part 104 of the rotation stopper cylinder 4. Yes. Here, since the soft portion 104 is soft, the plurality of protrusions 56 are engaged with the plurality of protrusions 56 at the same time in order to fully exhibit the screwing action of the first screwing portion 8. .

  8 is a perspective view showing a moving body of the coating material extruding container shown in FIG. 1, and FIG. 9 is a cross-sectional perspective view taken along the line IX-IX in FIG. As shown in FIGS. 8 and 9, the moving body 6 pushes the piston 7 forward to advance and retracts backward to retract. The moving body 6 is formed of, for example, POM and has a bottomed cylindrical shape (bottomed cylindrical shape) whose front end is closed. The moving body 6 includes a flange portion 6a at a position behind the front end by a predetermined length. The flange portion 6a contacts the rear end surface of the piston 7 and presses the piston 7 forward when the main body tube 2 and the operation tube 3 are relatively rotated in one direction.

  Moreover, the moving body 6 has the external thread 6b of the 2nd screwing part 9 in the outer peripheral surface ranging from the rear side to the rear-end part from the collar part 6a. As shown in FIG. 9, on the inner circumferential surface of the moving body 6, projections 6 c that protrude radially and extend in the axial direction are provided at the circumferentially six positions in the circumferential direction so as to engage with the operation cylinder 3 in the rotational direction. Is provided.

  The moving body 6 of the present embodiment includes a cylindrical portion 6d provided on the front side of the flange portion 6a and a valve body portion 6e provided on the front side of the cylindrical portion 6d as constituting the front end portion thereof. ing. The cylindrical portion 6d has biplanar portions 6f and 6f formed on the outer peripheral surface thereof so as to face each other. The valve body portion 6e constitutes the valve mechanism 111 and comes into airtight contact with a valve seat portion 7b (described later) of the piston 7. The valve body portion 6e has a columnar shape having a diameter larger than that of the cylindrical portion 6d. The valve body 6e seals the cylindrical hole 6x of the moving body 6 at its front end.

  In addition, air A (see FIG. 1) is actively circulated in each of the two flat surfaces (outer surfaces) 6f and 6f in the cylindrical portion 6d when the valve mechanism 111 is open when the piston 7 moves forward. A through hole 6g extending to the inner peripheral surface of the cylindrical portion 6d and extending in the radial direction is formed. The through holes 6g have a circular cross section and are provided in pairs so as to face each other.

  In addition, the front surface of the flange portion 6a has a rectangular cross-section extending in the radial direction for positively circulating air A (see FIG. 1) when the valve mechanism 111 is open when the piston 7 moves forward. A groove 6h is formed. A pair of groove portions 6h are provided so as to be continuous with the two plane portions 6f and 6f and to face each other.

  As shown in FIGS. 1, 8, and 9, the moving body 6 is externally inserted between the shaft body 31 y of the operation cylinder 3 and the moving screw cylinder 5 from the rear end side. At this time, the moving body 6 has its male screw 6b screwed with the female screw 53 of the moving screw cylinder 5, and its protrusion 6c enters between the protrusions 37, 37 of the shaft 31y (see FIG. 4). By being engaged in the rotation direction, the operation cylinder 3 is mounted so as to be capable of synchronous rotation and axial movement.

  10 is a cross-sectional perspective view showing a piston of the coating material extruding container of FIG. As shown in FIG. 10, the piston 7 is formed of, for example, PP (polypropylene), HDPE, LLDPE (linear low density polyethylene), or the like. The piston 7 has a bell shape (shade shape) that is convex toward the front side, and has a concave portion 7a that opens to the rear side.

  On the inner peripheral surface of the recess 7 a, a valve seat portion 7 b that is in airtight contact with the valve body portion 6 e of the moving body 6 is provided as a component of the valve mechanism 111. The valve seat portion 7b protrudes inward in the radial direction and extends along the circumferential direction. This valve seat part 7b has the inclined surface 7c which the front side corner | angular part is notched as what improves airtightness with the valve body part 6e.

  Further, the piston 7 has a through hole 7d as the ventilation portion 110 that allows the front side of the piston 7 to communicate with the inside of the recess 7a. A pair of through holes 7d are provided so as to extend in the radial direction from the front surface of the piston 7 into the recess 7a and to face each other. In other words, the through hole 7d here communicates the space formed in the outer peripheral portion on the front side due to the shape of the piston 7 and the recess 7a. On the outer peripheral surface of the piston 7, an annular protrusion 7 e that comes into contact with the inner peripheral surface of the filling member 1 is provided to ensure airtightness (sealing property) with respect to the filling member 1.

  As shown in FIGS. 1 and 10, the piston 7 can be rotated relative to the moving body 6 and moved in the axial direction (moving within a predetermined range) by the recess 7 a being extrapolated to the front end of the moving body 6. Is possible). Thereby, the valve seat part 7b and the valve body part 6e are movable within a predetermined range along the axial direction and engaged with each other.

  As shown in FIG. 1, the filling member 1 discharges the coating material M filled in the filling region 1x from the front end portion according to the operation by the user. The filling member 1 is formed of PET (polyethylene terephthalate) resin, ABS resin, or the like, has a cylindrical shape, and an opening 1a at the front end thereof is an opening for causing the coating material M to appear. The opening 1a is formed by an inclined angle surface that is inclined at a predetermined angle with respect to the axial direction. The opening 1a 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 filling member 1, an annular convex concave portion 1 b for engaging with the annular concave and convex portion 2 b of the main body cylinder 2 in the axial direction is provided. Further, on the outer peripheral surface of the filling member 1, the protruding ridges 1 g extending in the axial direction are engaged with the knurls 2 a of the main body cylinder 2 in the rotational direction at the circumferentially equidistant positions on the rear side of the annular convex recess 1 b. Is provided.

  The filling member 1 is inserted between the main body cylinder 2 and the moving screw cylinder 5 from the rear side, and the annular concavo-convex portion 2b of the main body cylinder 2 is engaged with the annular concavo-convex portion 1b in the axial direction. The knurled 2 a of the main body cylinder 2 is engaged with the strip 1 g in the rotation direction, and thus is engaged with and attached to the main body cylinder 2 in the axial direction and the rotation direction, and is integrated with the main body cylinder 2. In addition, the piston 7 is inserted into the rear end portion of the filling member 1 so as to be airtightly adhered. That is, the piston 7 is inserted in the filling member 1 and is slidable in the axial direction while being in close contact with the filling member 1 so as to be airtight.

  Further, in the coating material extruding container 100, the coil spring 14 as an elastic member having a predetermined elastic force is provided between the rear end surface of the filling member 1 and the flange portion 54 (see FIG. 7) of the moving screw cylinder 5 in the main body cylinder 2. Are attached so as to be coaxially interposed, and the moving screw cylinder 5 is urged rearward in the axial direction. Thereby, when the moving screw cylinder 5 moves forward by a certain amount and the screwing action of the first screwing part 8 is released, the moving screw cylinder 5 is set so that the first screwing part 8 is screwed back. It will be energized.

  Incidentally, the screwing return here means a stage in which the protrusion 56 as the male screw of the first screwing portion 8 returns until it comes into contact with the side surface of the screw thread of the protrusion 41 as the female screw. (same as below). As the coil spring 14, for example, a resin spring produced by injection molding of a cylindrical shape with a part cut away using a resin such as POM or PP (polypropylene), or a spring made of stainless steel wire in a coil shape is adopted. Can do.

  Next, an example of the manufacturing procedure of the coating material extruding container 100 will be described. FIG. 11 is a diagram for explaining a procedure for manufacturing the coating material extruding container.

  As shown in FIG. 11, first, the front end portion of the moving body 6 is inserted into the recess 7 a of the piston 7, and the piston 7 is mounted so that the moving body 6 can move in the axial direction within a predetermined range. Further, the moving screw cylinder 5 is extrapolated to the moving body 6 from the rear side, and the female screw 53 of the moving screw cylinder 5 is screwed into the male screw 6 b on the outer peripheral surface of the moving body 6. Then, the coil spring 14 is extrapolated from the front side to the moving screw cylinder 5 so as to be positioned around the moving screw cylinder 5 to obtain a temporary assembly.

  Subsequently, the rotation stop cylinder 4 is extrapolated from the front side to the main body 31 of the operation cylinder 3, and is inserted into the main body cylinder 2 from the rear side. Further, the temporary assembly is inserted into the main body cylinder 2 from the front side, and the protrusions 41 on the inner peripheral surface of the rotation stopper cylinder 4 are screwed into the protrusions 56 on the outer peripheral surface of the moving screw cylinder 5. The moving body 6 is extrapolated to the shaft body 31y. As a result, the main assembly 40 is obtained.

  On the other hand, the opening 1 a of the filling member 1 is closed with the seal member 13 and turned upside down. In this state, a predetermined amount of the melt coating material M <b> 1 is discharged from the nozzle 19 into the filling member 1. Thereby, it fills so that the melt application material M1 may contact | adhere from the front-end | tip of the filling member 1 to the middle part (what is called direct filling). Subsequently, after the melt application material M1 is cooled and solidified to become the application material M, the main body side assembly 40 is attached to the filling member 1 filled with the application material M. Specifically, the front end side of the main assembly 40 is extrapolated from above, and the filling member 1 is engaged and attached to the main body cylinder 2 while the piston 7 is hermetically inserted into the filling member 1.

  At this time, since the inner peripheral surface of the filling member 1 is in sliding contact with the outer peripheral surface of the piston 7 (especially the annular protrusion 7e), a sliding resistance acting on the piston 7 acts on the piston 7 as shown in FIG. As described above, the piston 7 moves rearward with respect to the moving body 6, whereby the valve mechanism 111 is opened (the valve body portion 6 e and the valve seat portion 7 b are disengaged). Then, after that, the sealing member 13 is removed to obtain the coating material extruding container 100 in the initial state.

  Here, when the filling member 1 and the main assembly 40 are assembled, the piston 7 is airtightly intimately contacted with the filling member 1 as described above. Therefore, there is a concern that it remains as it is between the coating material M in the filling member 1 and the piston 7 and remains as a wasted space in the filling region 1x. As a result, there is a concern that the remaining air becomes a raised bottom portion of the filling region 1x and the filling amount of the coating material M is reduced.

  In this respect, in this embodiment, as described above, the through hole 7d as the ventilation portion 110 is formed in the piston 7, and the valve mechanism 111 is opened when the filling member 1 and the main assembly 40 are assembled. Thus, air flow through the through hole 7d is allowed. Therefore, at the time of such assembly, the air on the coating material M in the filling member 1 can be caused to flow into the recess 7a through the through hole 7d and escape to the rear side in the container via the valve mechanism 111. It is possible to prevent a waste space from being generated and the filling amount of the coating material M from being reduced.

  Further, since the groove 6h and the through-hole 6g are formed in the moving body 6, the air released through the valve mechanism 111 is actively circulated outside the container through the groove 6h and the through-hole 6g. (Details will be described later).

  In addition, strictly controlling the filling amount of the melt coating material M1 and making them coincide with each other without the presence of the air A between the coating material M and the piston 7 in the initial state after assembly, It is extremely difficult. Further, if a large amount of the melt coating material M1 is filled, the coating material M may be pushed out by the piston 7 during assembly and may appear uselessly from the opening 1a. In this regard, in the coating material extruding container 100 in the initial state, the coating material M is filled halfway from the front end to the rear end of the filling member 1 so that a small amount of air A exists between the coating material M and the piston 7. Therefore, at the time of assembly, the coating material M is prevented from being pushed out by the piston 7 and appearing from the filling member 1.

  Incidentally, when the filling member 1 filled with the coating material M is assembled to the main assembly 40 in this way, it is a soft semi-solid coating material, a thin and brittle coating material, a soft or gel coating material. However, it is safely protected by the filling member 1. Here, if the coating material M is, for example, soft or gel-shaped, it is easy to be in close contact with the filling member 1, which is convenient for retracting the coating material M.

  Next, an example of operation | movement of the coating material extrusion container 100 is demonstrated. 12 is a partially enlarged view of the coating material extrusion container of FIG. 1, FIG. 13 is a partially enlarged view of the coating material extrusion container of FIG. 2 (a), and FIG. 14 is a drawing of the coating material extrusion container of FIG. FIG.

[When feeding]
In the initial state of the coating material extruding container 100 shown in FIGS. 1 and 11, a small amount of air A exists between the coating material M filled in the filling region 1 x and the piston 7. Then, when the cap C is removed by the user and the main body cylinder 2 and the operation cylinder 3 are relatively rotated in one direction which is the feeding-out direction, the convex portion 44 of the rotation stop cylinder 4 becomes the convex portion 36 of the operation cylinder 3. The operation cylinder 3 and the rotation stop cylinder 4 are synchronously rotated by abutting and locking (solid engagement) in the rotation direction. Therefore, the moving screw cylinder 5, the operation cylinder 3, and the rotation stopper cylinder 4 rotate relative to each other, and the first screwing portion 8 constituted by the protrusion 56 of the movement screw cylinder 5 and the protrusion 41 of the rotation stopper cylinder 4. The screwing action works, and the moving screw cylinder 5 moves forward by the cooperation of the rotation stop portion formed by the protrusion 55 of the moving screw cylinder 5 and the protrusion 1g of the filling member 1.

  At the same time, the filling member 1 and the moving screw cylinder 5 and the moving body 6 rotate relative to each other, and the second screwing portion 9 constituted by the female screw 53 of the moving screw cylinder 5 and the male screw 6b of the moving body 6 is provided. The screwing action works, and the moving body 6 also moves forward by the cooperation of the rotation stop portion constituted by the protrusion 37 of the shaft body 31 y and the protrusion 6 c of the moving body 6 in the operation cylinder 3. That is, the moving body 6 moves forward with the moving screw cylinder 5 and simultaneously moves forward alone.

  As a result, the movable body 6 moves forward by a predetermined amount with respect to the piston 7, and as shown in FIGS. 2A and 13, the flange portion 6 a abuts against the rear end surface of the piston 7 to press the piston 7 forward. 7 moves forward. At this time, the valve body portion 6e and the valve seat portion 7b are separated and disengaged, and the valve mechanism 111 is opened. Therefore, in the air A between the coating material M and the piston 7, the piston 7 From the through-hole 7d into the recess 7a and escapes well to the rear side in the container via the valve mechanism 111. As a result, the air A is immediately lost, and the coating material M is pushed forward and advanced (feeded out) in a state of being in close contact with the front surface of the piston 7, and the coating material M appears from the opening 1a.

  The air A released to the rear side through the valve mechanism 111 is circulated outward in the radial direction through the groove 6 h of the moving body 6 and passes through the slit 51 (see FIG. 7) of the moving screw cylinder 5. Then, it is circulated into the cylinder 6x of the movable body 6 through the through-hole 6g of the movable body 6, and then discharged from the gap E between the filling member 1 and the main body cylinder 2 to the outside.

  Subsequently, when the relative rotation in one direction is continued, the moving body 6 and the piston 7 move forward in a state where the air flow in the through hole 7d is opened in the valve mechanism 111, and the coating material M is further pushed out from the opening 1a. As a result, the protrusion 56 of the moving screw cylinder 5 is disengaged from the front end of the protrusion 41 of the rotation stopper cylinder 4, the screwing action of the first screwing portion 8 is released, and the moving screw cylinder 5 is moved forward. To reach.

  When the relative rotation in one direction continues, only the screwing action of the second screwing part 9 works while the first screwing part 8 is urged by the coil spring 14 so that the screwing is restored. In 111, the moving body 6 and the piston 7 further move forward with the air flow through the through-hole 7d opened, and the coating material M appears to be further pushed out from the opening 1a. Thereafter, the moving body 6 and the piston 7 The forward limit is reached (see FIG. 3).

  Incidentally, in the state where the moving screw cylinder 5 is in the forward limit, the moving screw cylinder 5 is urged rearward by the elastic force of the reduction of the coil spring 14, so that the main body cylinder 2 and the operating cylinder are moved in the other direction, which is the retraction direction. 3 is relatively rotated, the protrusion 56 of the moving screw cylinder 5 immediately enters the tip of the protrusion 41 of the rotation stopper cylinder 4 adjacent to the rotation direction, and the first screwing portion 8 is immediately screwed back. .

  Further, when only the screwing action of the second screwing part 9 works and the movable body 6 and the piston 7 move forward, the first screwing part 8 released from the screwing is screwed back by the urging force of the coil spring 14. Since it is biased in the direction, the engagement and disengagement between the ridges 41 and 56 are repeated (that is, the ridges 41 and 56 are repeatedly brought into contact with and separated from each other). A click feeling is given to the user every time the engagement and disengagement are performed, and the pushing of the coating material M is sensed by the user. At this time, as described above, since the protrusion 41 is softer than the protrusion 56 (has flexibility), the click sound (volume) of the generated click feeling is reduced, and the click sound Is considered profound in the bass.

  Further, in the state where the moving body 6 and the piston 7 are in the forward limit, the second threaded portion 9 remains screwed although the protrusion 6 c of the moving body 6 is disengaged from the protrusion 37 of the operation cylinder 3. Then, the moving body 6 is pulled backward by the coil spring 14 through the second screwing portion 9 and the moving screw cylinder 5. Therefore, when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in the other direction in such a forward limit state, the protrusions 6c and 37 are immediately engaged with each other to act as a rotation stop, and the moving body 6 and the piston 7 moves back immediately.

[When rewinding]
On the other hand, as shown in FIGS. 2B and 14, for example, after use, when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in the other direction, a small rotational force is applied to the operation cylinder 3 and the rotation stop cylinder 4. Is added, the side surface 44a (see FIG. 5) of the convex portion 44 of the rotation stopper cylinder 4 is brought into contact with the side surface 36a (see FIG. 4) of the convex portion 36 of the operation cylinder 3, and is engaged in the circumferential direction with a predetermined engagement force. Since the operation cylinder 3 and the rotation stopper cylinder 4 are synchronously rotated, the moving screw cylinder 5, the operation cylinder 3 and the rotation stopper cylinder 4 are relatively rotated, and the screwing action of the first screwing portion 8 works to move. The screw cylinder 5 moves backward.

  At the same time, the filling member 1 and the moving screw cylinder 5 and the moving body 6 rotate relative to each other, and the moving action of the second screwing portion 9 works to move the moving body 6 backward. In other words, the moving body 6 is retracted along with the moving screw cylinder 5 and is also retracted alone.

  At this time, the movable body 6 moves backward by a predetermined amount with respect to the piston 7, the valve body portion 6e engages with the valve seat portion 7b, pulls the piston 7 rearward, and the piston 7 moves backward. That is, a tensile force acting backward on the piston 7 is applied by the moving body 6. At the same time, since the inner circumferential surface of the filling member 1 is in sliding contact with the outer circumferential surface of the piston 7, a sliding resistance acting on the front side acts on the piston 7. Therefore, the valve body portion 6e and the valve seat portion 7b operate so as to be pressed against each other, and the valve body portion 6e and the valve seat portion 7b are engaged in an airtight manner.

  Here, since the valve seat portion 7b has the inclined surface 7c as described above, the inclined surface 7c of the valve seat portion 7b is engaged with the valve body portion 6e so as to come into wedge contact, so that the valve body portion 6e and the valve seat are engaged. The portion 7b is strongly airtight with each other. As a result, the valve mechanism 111 is closed and the flow of air through the through hole 7d is closed, that is, the flow of air from the through hole 7d to the recess 7a is blocked.

  Therefore, when the piston 7 and the moving body 6 are retracted in this way, the pressure reducing action (the action of maintaining the sealed state) in the filling member 1 is exerted satisfactorily and reliably, and the coating material M is tightly adhered to the front surface of the piston 7. In this state, as the piston 7 moves backward, the coating material M is pulled back in the filling member 1 and moved back (returned), and is immersed from the opening 1a.

  Subsequently, when the relative rotation in the other direction is continued, the moving body 6 and the piston 7 are further retracted in a state where the air flow in the through hole 7d is closed in the valve mechanism 111, and the pressure reducing action in the filling member 1 As the piston 7 is retracted, the coating material M is pulled back in the filling member 1 and further retracted, and the flange portion 54 of the moving screw cylinder 5 comes into contact with the front end surface of the rotation stopper cylinder 4, so that the first screwing portion 8 The screwing action is stopped, and the moving screw cylinder 5 reaches the retreat limit.

  Subsequently, the main body cylinder 2 and the operation cylinder 3 are relatively rotated in the other direction with a larger operation rotational force than before the screwing action of the first screwing portion 8 is stopped, and the operation cylinder 3 and the rotation stopper cylinder 4 are rotated largely. When a force is applied, the convex portion 44 slides over the side surface 36a of the convex portion 36 to get over the convex portion 36, and the operation cylinder 3 and the rotation stopper cylinder 4 are relatively rotated (so-called “idle rotation”). The Therefore, the movable body 6 and the piston 7 are further retracted in a state where the air flow in the through-hole 7d is closed in the valve mechanism 111, and the coating material M is filled with the filling member according to the retraction of the piston 7 by the decompression action in the filling member 1. It is pulled back in 1 and retreats further.

  Then, when the relative rotation in the other direction is continued by an operation rotational force larger than that before the stop, the moving body 6 and the piston 7 are further retracted in the state where the air flow in the through hole 7d is closed in the valve mechanism 111, The application material M is pulled back in the filling member 1 by the pressure reducing action in the filling member 1 as the piston 7 moves backward, and further retracts, and the rear end of the moving body 6 reaches the bottom surface of the main body 31 of the operation cylinder 3 and moves. The body 6 and the piston 7 reach the backward limit.

  By the way, when the projecting portion 44 of the rotation stop cylinder 4 gets over the projecting portion 36 of the operation cylinder 3 when the moving body 6 is further retracted only by the screwing action of the second screwing section 9, a click feeling is generated. That is, when the moving body 6 is further retracted, engagement and disengagement (engagement and disengagement) of the convex portions 44 and 36 are repeated, and the user feels a click each time such engagement and disengagement occurs. Will be granted. Thereby, a click feeling of 8 times per one rotation of the relative rotation is generated, and the backward movement of the piston 7 and the moving body 6 is detected. At this time, as described above, since the convex portion 44 is softer than the convex portion 44 (has flexibility), the click sound of the generated click feeling is reduced and the click sound is in the low frequency range. It is supposed to be profound.

  Further, in the state where the moving body 6 and the piston 7 are in the retreat limit state, the front end portion 5x is expanded by the slit 51 even if an excessive rotational force is applied to the second screwing portion 9 due to subsequent relative rotation in the other direction. Thus, the screwing action of the second screwing portion 9 is released.

[Storage]
On the other hand, during storage (that is, when the main body cylinder 2 and the operation cylinder 3 are not relatively rotated and the piston 7 is stopped), the tensile force and sliding resistance by the moving body 6 act on the piston 7. Therefore, the valve body portion 6e and the valve seat portion 7b are disengaged or contacted in a non-airtight manner, so that the valve mechanism 111 is opened and the air flow through the through hole 7d is opened.

  As described above, in the coating material extruding container 100 of the present embodiment, the air between the coating material M and the piston 7 is opened because the valve mechanism 111 opens the flow of air in the through hole 7d when the piston 7 moves forward. A can be missed. Therefore, it is possible to suppress the adverse effect on the forward movement of the piston 7 due to the air A. For example, there is a time lag between the forward movement of the piston 7 and the appearance of the coating material M due to the high compressibility of the air A. Can be suppressed, and the coating material M can be extruded with high accuracy. On the other hand, when the piston 7 is retracted, the air circulation in the through hole 7d is closed by the valve mechanism 111, so that the sealed state between the piston 7 and the coating material M can be suitably maintained. Therefore, it is possible to reliably exert the suction action by the reduced pressure, and the coating material M can be pulled back with high accuracy.

  Further, as described above, since the air A between the coating material M and the piston 7 can escape during the forward movement, the coating material M unintentionally enters or exits from the opening 1a due to a temperature change of the air A. Can be suppressed. As a result, the durability required for the coating material extruding container 100 (for example, product abnormality does not occur in an ambient environment of 5 ° C. to 40 ° C.) can be reliably ensured.

  Furthermore, as described above, since the flow of the air in the through hole 7d is opened by the valve mechanism 111 when the coating material extruding container 100 is assembled, it is possible to suppress the filling area 1x from being raised and bottomed by the air A, It is also possible to prevent a useless space from being generated in the filling member 1 to reduce the filling amount of the coating material M.

  By the way, in general, in the coating material extruding container 100, for example, when the coating material M contracts due to an extreme temperature drop, a gap is formed around the coating material M in the filling member 1. When the piston 7 moves backward, air may flow between the coating material M and the piston 7 from the outside. Even when air flows between the coating material M and the piston 7 for some reason as described above, in the present embodiment, the air A can be released when the piston 7 moves forward, so that the subsequent temperature stabilization When the piston 7 is retracted in the normal state, the suction action can be reliably exerted.

  Further, in the present embodiment, as described above, when the piston 7 is stopped when the coating material extruding container 100 is being stored, the valve mechanism 111 opens the flow of air through the through hole 7d to apply the coating material M. Since the air A between the piston 7 and the piston 7 is released, for example, the coating material M is prevented from unexpectedly appearing due to expansion of the temperature of the air A or continuous temperature change due to long-term storage. It becomes possible to do.

  In the present embodiment, as described above, the groove portion 6h extending along the radial direction is formed on the front surface of the flange portion 6a of the moving body 6. Therefore, when the flange portion 6a is in contact with the rear end surface of the piston 7 with the valve mechanism 111 being opened when the piston 7 moves forward, the air A between the coating material M and the piston 7 is removed from the groove portion 6h. Thus, the movable body 6 can be actively released to the outside in the radial direction.

  In the present embodiment, as described above, the through hole 6g is formed in the cylindrical portion 6d of the moving body 6. Therefore, in a state where the valve mechanism 111 is opened when the piston 7 moves forward, the air A between the coating material M and the piston 7 is actively released to the space in the moving body 6 through the through hole 6g. be able to.

  In the present embodiment, as described above, the through hole 7d as the ventilation portion 110 communicates the space formed in the outer peripheral portion on the front side of the piston 7 with the recess 7a. Therefore, it is possible to distribute the air A that is particularly likely to remain between the coating material M and the piston 7 so as to escape. The ventilation portion may be a through-hole extending in the axial direction at the axial center position of the front surface of the piston 7, and the configuration and number of the ventilation portions 110 may include, for example, the shape of the piston 7, the viscosity of the coating material M, and the like. It is possible to set appropriately according to the nature of the.

  Further, when the moving body 6 is in the shape of a bottomed cylinder as in the present embodiment, when the moving body 6 is resin-molded, the internal pin is supported in a cantilevered manner on the rear end side, so that bending occurs. There is concern. In this respect, in this embodiment, since the through hole 6g is formed on the front end side of the moving body 6, the internal pin is moved on the front end side using the through hole 6g when the moving body 6 is molded with resin. Since it can be supported, it is possible to prevent bending and to improve molding accuracy.

  Incidentally, in this embodiment, the following effects are also exhibited. That is, as described above, when the moving body 6 moves forward or backward only by the second screwing portion 9, a click feeling is given to the user. At the same time, since the protrusion 41 is softer than the protrusion 56, the click sound can be made heavy while reducing (relaxing) the click sound of the click feeling. Therefore, it is possible to make the click sound high-value-added and high-value-added, and to produce a high-quality click feeling.

  Next, a second embodiment of the present invention will be described. In the description of the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 15 is a partially enlarged longitudinal sectional view showing a state when the piston of the coating material extruding container according to the second embodiment of the present invention is retracted, and FIG. 16 is a perspective view showing a part of the moving body of the coating material extruding container of FIG. 17 and 17 are cross-sectional perspective views taken along line XVII-XVII in FIG. As shown in FIG. 15, the coating material extruding container 200 of the present embodiment is different from the first embodiment in that a moving body 206 is provided instead of the moving body 6 (see FIG. 1).

  As shown in FIGS. 16 and 17, the moving body 206 includes a valve body portion 201. The valve body 201 constitutes the valve mechanism 111, and has a cylindrical shape with a diameter larger than the diameter of the cylindrical portion 6d. On the outer peripheral surface of the valve body 201, the cylindrical portion 6d side is an inclined surface 201a that is inclined so as to decrease in diameter as it goes rearward. That is, the valve body portion 201 is continuous with the cylindrical portion 6d through the inclined surface 201a. The inclined surface 201a has an inclination angle equal to that of the inclined surface 7c so as to be more airtightly engaged with the inclined surface 7c of the valve seat portion 7b. Moreover, the cylindrical part 6d has a disk-shaped partition part 202 inside thereof, whereby the cylindrical hole 206x of the moving body 206 is sealed at its front end.

  A through hole 204 extending in the radial direction is formed in the flange portion 6a so as to correspond to the groove portion 6h and the through hole 6g. The through-hole 204 is for allowing air A (see FIG. 1) to flow when the valve mechanism 111 is open when the piston 7 moves forward, and from the outer peripheral surface of the flange 6a to the inner peripheral surface of the cylindrical hole 206x. At the same time, it opens to the front surface of the flange 6a. A pair of the through holes 204 are provided so as to be continuous with the two plane portions 6f and 6f and to face each other. In such a moving body 206, when formed by injection molding, after the inner mold (core part) inside the cylinder of the valve body part 201 is released first, the valve body part 201 and the cylindrical part 6d. The outer mold (cavity portion) outside the mold is released by forcible removal or the like, so that the inclined surface 201a has no parting line.

  In the coating material extruding container 200 of the present embodiment configured as described above, when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in one direction, the collar 6a is moved behind the piston 7 by the advancement of the moving body 6. The piston 7 is pushed forward by coming into contact with the end face, and the piston 7 moves forward. At this time, the valve body portion 6e and the valve seat portion 7b are separated and disengaged, and the valve mechanism 111 is opened. Therefore, in the air A between the coating material M and the piston 7, the piston 7 From the through-hole 7d to the recess 7a, and escapes well to the rear side in the container via the valve mechanism 111.

  Then, the air A released to the rear side through the valve mechanism 11 is circulated outwardly in the radial direction through the through hole 204 of the moving body 206 and passes through the slit 51 (see FIG. 7) of the moving screw cylinder 5. Then, it is discharged to the outside through the gap E between the filling member 1 and the main body cylinder 2 and is circulated into the cylinder hole 6 x of the moving body 6 through the through hole 204.

  On the other hand, when the main body cylinder 2 and the operation cylinder 3 are rotated relative to each other in the other direction, the valve body 201 is engaged with the valve seat 7b of the piston 7 as the moving body 206 moves backward as shown in FIG. The piston 7 is pulled rearward, the piston 7 moves backward, and the sliding resistance to the front side acts on the piston 7. Therefore, the valve body part 201 and the valve seat part 7b operate so as to be pressed against each other, and the valve body part 201 and the valve seat part 7b are engaged in an airtight manner.

  Here, since the valve seat portion 7b has the inclined surface 7c and the valve body portion 201 has the inclined surface 201a as described above, the inclined surfaces are in contact with each other. Therefore, the valve body portion 201 and the valve seat portion 7b Are firmly sealed to each other. As a result, the valve mechanism 111 is closed and the flow of air in the through hole 7d is closed, that is, the flow of air from the through hole 7d to the recess 7a is blocked. Further, as described above, since the moving body 206 is formed so that there is no parting line on the inclined surface 201a, the inclined surfaces 7c and 201a can be brought into contact with each other with high accuracy, so that the valve mechanism 111 is closed. Sometimes it is possible to further seal the valve body 201 and the valve seat 7b.

  As described above, the coating material extruding container 200 of the present embodiment also exhibits the above-described effect that the coating material can be accurately extruded and pulled back. Further, in the present embodiment, as described above, when the valve mechanism 111 is closed, the valve seat portion 7b is brought into contact with the inclined surface 7c and the inclined surface 201a of the valve body portion 201 is in contact with the inclined surfaces (contact between the inclined surfaces). Therefore, the airtight effect of the valve mechanism 111 can be enhanced.

  Next, a third embodiment of the present invention will be described. In the description of the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 18 is a partially enlarged longitudinal sectional view showing a state during storage of the coating material extruding container according to the third embodiment of the present invention. As shown in FIG. 18, the coating material extruding container 300 of this embodiment is different from the first embodiment in that a coil spring 214 is further provided.

  The coil spring 214 is an elastic member having a predetermined elastic force in the axial direction, and is disposed in the concave portion 7a of the piston 7, and is interposed between the bottom portion of the concave portion 7a and the valve body portion 6e. The coil spring 214 biases the moving body 6 rearward in the axial direction so that the moving body 6 moves rearward with respect to the piston 7 during storage. In other words, the piston 7 is urged forward in the axial direction so that the piston 7 moves forward relative to the moving body 6 during storage. Here, the predetermined elastic force of the coil spring 214 is set to an elastic force that allows the moving body 6 to advance relative to the piston 7 when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in one direction.

  As described above, the coating material extruding container 300 of the present embodiment also exhibits the above-described effect that the coating material can be accurately extruded and pulled back.

  In the present embodiment, during storage, the moving body 6 is moved backward with respect to the piston 7 by the coil spring 214, so that the valve body portion 6e and the valve seat portion 7b operate so as to be pressed against each other. The portion 6e and the valve seat portion 7b are hermetically engaged, the valve mechanism 111 is closed, and the air flow in the through hole 7d is closed. Therefore, since the sealing state between the coating material M and the piston 7 can be maintained during storage, it is possible to prevent the coating material M from volatilizing. In addition, in order to maintain the coating material M for a long time, when the coating material M contains a large amount of volatile solution materials (cyclomethicone, methyltrimethicone, isododecane, isohexadecane, water, etc.), such an effect becomes remarkable.

  The preferred embodiment of the present invention has been described above, but the coating material extrusion container according to the present invention is not limited to the above-described embodiment, and is modified without changing the gist described in each claim, or It may be applied to other things.

  For example, in the above embodiment, the container front part (main body cylinder 2) and the container rear part (operation cylinder 3) are relatively rotated to move the piston 7 forward and backward, but other parts such as the container middle part are relatively rotated. Thus, the piston 7 may be moved forward and backward, or the piston 7 may be moved forward and backward by a knocking action. In short, the present invention may be any coating material extruding container in which the pushing portion moves forward and backward. .

  Further, in the above embodiment, when the main body cylinder 2 and the operation cylinder 3 are relatively rotated in one direction / other direction, the screwing action of the first screwing part 8 works and at the same time the second screwing part 9. However, it may be configured such that only the screwing action of the second screwing part 8 works after only the screwing action of the first screwing part 8 works. . Moreover, this invention may have only any one of the 1st or 2nd screwing parts 8 and 9. FIG.

  Moreover, in the said embodiment, although the valve body parts 6e and 201 and the valve-seat part 7b are provided as the valve mechanism 111, the valve mechanism 111 is not limited to this, The air in a ventilation part is advanced at the time of advance of an extrusion part. It is only necessary to have a configuration in which the flow of air is opened and the flow of air in the ventilation portion is closed when the extrusion portion is retracted.

  The above-described male screw and female screw are not limited to a screw thread or a screw groove, but are a thread group or a screw groove, such as a group of protrusions arranged intermittently or a group of protrusions arranged spirally and intermittently. It may be one that performs a similar function.

  Further, 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, For coating material extrusion containers using liquid coating materials such as massage oil, ink for liquids such as square plug loosening liquid, foundation, concealer, skin cream, marking pens, writing instruments, etc. However, it is of course applicable.

  DESCRIPTION OF SYMBOLS 1 ... Filling member, 6 ... Moving body, 6e, 201 ... Valve body part, 6a ... Gutter part, 6g ... Through-hole, 6h ... Groove part, 7 ... Piston (extrusion part), 7a ... Recessed part, 7b ... Valve seat part, 7d: through hole (vent), 100, 200 ... coating material extrusion container, 110 ... vent, 111 ... valve mechanism, 204 ... through hole (groove), A ... air, M ... coating material.

Claims (6)

An application material extrusion container, comprising: a filling member filled with a coating material; and an extruding portion that is inserted into the filling member and intimately contacts the filling member so as to be airtight. ,
A ventilation part for circulating air between the coating material and the extrusion part in the filling member;
And a valve mechanism that opens the air flow in the ventilation portion when the extrusion portion moves forward and closes the air flow in the ventilation portion when the extrusion portion moves backward. Extrusion container.   The said valve mechanism opens the distribution | circulation of the said air in the said ventilation part at the time of the stop of the said extrusion part, The coating material extrusion container of Claim 1 characterized by the above-mentioned.   The said valve mechanism closes the distribution | circulation of the said air in the said ventilation part at the time of the stop of the said extrusion part, The coating material extrusion container of Claim 1 characterized by the above-mentioned. A moving body for moving the push-out portion forward and backward;
The extrusion part has a recess opening on the rear side,
The ventilation portion is a through hole that communicates the front side of the extrusion portion with the inside of the recess,
The moving body has its front end inserted in the recess,
The said valve mechanism has a valve seat part provided in the inner surface of the said recessed part of the said extrusion part, and a valve body part provided in the said front-end part of the said moving body, The 1-3 characterized by the above-mentioned. The coating material extrusion container as described in any one of these. The moving body has a bottomed cylindrical shape whose front side is closed, and includes a flange portion that comes into contact with a rear end surface of the pushing portion when the pushing portion advances.
The coating material extruding container according to claim 4, wherein a groove portion extending along a radial direction is formed on a front surface of the flange portion.   The coating material extruding container according to claim 5, wherein a through-hole is formed in an outer surface of the front end portion of the movable body so as to circulate the air into the movable body when the push-out portion moves forward.

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