JP6986250B2 - Cartridges, cartridge holders, and cartridge-type cosmetic containers - Google Patents

Description

The present invention relates to a cartridge, a cartridge holder, and a cartridge type cosmetic container.

There is known a cartridge-type cosmetic container in which the cosmetic contained in the cartridge appears and disappears from the tip of the cartridge (see Patent Document 1). The cartridge-type cosmetic container described in Patent Document 1 holds an outer cylinder, a feeding mechanism having a sliding shaft that advances and retreats by a feeding operation, a cartridge filled with cosmetics inside, and cosmetics in the cartridge. It is equipped with a core chuck that allows cosmetics to appear and disappear from the tip of the cartridge, and a screw chuck that engages with the sliding shaft by mounting the cartridge.

In the cartridge type cosmetic container described in Patent Document 1, when the screw (132) of the cartridge is removed when the cartridge (131) is replaced, the chuck claw (119) of the screw chuck (117) expands and the inner surface of the chuck is expanded. The screw (118) of the sliding shaft (127) and the screw (128) of the sliding shaft (127) are disengaged. As a result, the sliding shaft (127) automatically retracts due to the tension of the spring (116), and the core chuck (134) and the presser (129) of the sliding shaft (127) are disengaged from each other.

Jikkenhei 3-49017 Gazette

In the cartridge-type cosmetic container described in Patent Document 1, for example, when a cartridge in use is replaced with a cartridge containing cosmetics of another color, the screw (132) of the cartridge (121) in use is removed. At the stage, the engagement between the core chuck (134) and the presser (129) of the sliding shaft (127) is not released. After removing the screw (132) of the cartridge (131) in use, the sliding shaft (127) retracts to the retreat limit together with the core chuck (134), and the engaging protrusion of the elastic piece (137) is recessed (133). ), The engagement between the core chuck (134) and the presser (129) of the sliding shaft (127) is released.

However, when the elastic piece (137), which has been bent inward in the cartridge (131) for a long time, does not expand, the engaging projection of the elastic piece (137) becomes a concave groove (133). The core chuck (134) that supports the cosmetic without engaging will come out of the cartridge (131). As a result, there is a problem that the cartridge (131) cannot be used from the next time even though it is in the middle of use.

An object of the present invention is to prevent a support member from falling off from a cartridge outer cylinder, and to remove a cartridge in use from the cartridge holder so that the cartridge can be replaced with another cartridge.

The present invention is a cartridge in which a feeding mechanism works by attaching to a cartridge holder having a built-in push rod, and the stored cosmetics advances and retreats in conjunction with the advance and retreat of the push rod. The cartridge outer cylinder having a through hole communicating with the opening on the end side and the support member accommodated in the cartridge outer cylinder so as to be movable in the axial direction and support the cosmetics are provided, and the support member is provided with a base end. Has a rod shaft portion connected to the tip of the push rod and a support portion provided at the tip of the rod shaft portion to support the cosmetic, and the outer diameter of the rod shaft portion is the outer diameter of the support portion. The diameter is smaller than the outer diameter, the axial length of the rod shaft portion is set to be longer than the stroke from the retracting limit to the advancing limit of the support member, and the through hole is the tip of the cartridge outer cylinder. A tip accommodating hole provided on the side and accommodating the cosmetics, and a tip accommodating hole provided in communication with the tip accommodating hole on the proximal end side of the cartridge outer cylinder, the tip of the push rod and the proximal end of the support member. A sliding hole in which the connecting portion slides in a state in which the connection cannot be disengaged, and a sliding hole that is provided in communication with the sliding hole on the base end side of the cartridge outer cylinder with respect to the sliding hole, and the push rod by the connecting portion. It has a proximal hole that enables disconnection between the distal end and the proximal end of the support member, the inner diameter of the sliding hole is smaller than the inner diameter of the distal end accommodating hole, and the inner diameter of the proximal end hole is a larger diameter than the inner diameter of the sliding hole, the inner diameter of the sliding hole, Ri diameter der than the outer diameter of the support portion, the support member has a rib, the cartridge barrel, said rib It has a groove portion that engages with the support member and is unable to rotate relative to the support member, and the groove portion is formed along the sliding hole .

The present invention is a cartridge-type cosmetic container including the cartridge and the cartridge holder, wherein the cartridge holder has a main body cylinder to which the cartridge outer cylinder is detachably attached to a front end portion and the main body cylinder. The rear end portion is provided with a drive body rotatably provided relative to the main body cylinder and an urging member for urging the push rod rearward, and the feeding mechanism is provided on the main body cylinder and has an inner circumference. A female screw member having a female screw formed therein and a male screw provided on the drive body and screwed to the female screw of the female screw member are formed on the outer periphery thereof, and the push rod is moved forward and backward by the relative rotation of the main body cylinder and the drive body. And have.

The present invention is a cartridge holder used by attaching to the cartridge, the main body cylinder to which the cartridge outer cylinder is detachably attached to the front end portion, and the main body cylinder to the rear end portion of the main body cylinder. The drive body provided so as to be relatively rotatable and the urging member for urging the push rod rearward are provided, and the feeding mechanism includes a female screw member provided on the main body cylinder and having a female screw formed on the inner circumference thereof, and the female screw member. A male screw provided on the drive body and screwed to the female screw of the female screw member is formed on the outer periphery thereof, and has the push rod that advances and retreats by the relative rotation of the main body cylinder and the drive body, and the push rod has a retract limit. When the connecting portion is located in the base end hole, the connecting portion is arranged in the sliding hole, and when the push rod is located in the forward limit, the connecting portion is arranged in the sliding hole.

According to the present invention, it is possible to remove a used cartridge from the cartridge holder and replace it with another cartridge while preventing the support member from falling off from the cartridge outer cylinder. Since the support member is prevented from falling off from the cartridge outer cylinder, the used cartridge can be removed from the cartridge holder and then the used cartridge can be attached to the cartridge holder again for use.

(A) is a front sectional view showing a state in which the push rod of the cartridge type cosmetic container according to the first embodiment of the present invention is located at the retracting limit, and FIG. 1 (b) is a front sectional view showing a state in which the push rod is located at the retracting limit. It is sectional drawing of AA in. It is a front sectional view which shows the state which the push rod of the cartridge type cosmetic container which concerns on 1st Embodiment of this invention is located at the advance limit, (b) is a sectional view of BB in FIG. 2 (a). It is a figure. (A) is a sectional view of the front surface of the cartridge according to the first embodiment of the present invention, (b) is a sectional view of the front surface of the cap, and (c) is a front view of the outer cylinder of the cartridge. Yes, (d) is a front view of the support member. (A) is a side view of the cartridge outer cylinder, (b) is a bottom view of the cartridge outer cylinder, (c) is a front view of the cartridge outer cylinder, and (d) is a cartridge outer cylinder. It is a cross-sectional view of the front of. (A) is a cross-sectional view of the front of the support member, (b) is a cross-sectional view of the front of the front support member, and (c) is a front view of the rear support member. (A) is a sectional view of the front surface of the cartridge holder, (b) is a sectional view taken along the line CC in FIG. 6 (a), and (c) is a sectional view taken along the line DD in FIG. 6 (a). Is. (A) is a cross-sectional view of the front surface of the main body outer cylinder, (b) is a plan view of the main body outer cylinder of FIG. 7 (a) as viewed from the front, and (c) is a side surface of the main body outer cylinder. FIG. 7 (d) is a plan view of the outer cylinder of the main body of FIG. 7 (c) as viewed from the front. (A) is a front view of the main body inner cylinder, (b) is a plan view of the main body inner cylinder of FIG. 8 (a) as viewed from the front, and (c) is a bottom view of the main body inner cylinder. Yes, (d) is a cross-sectional view of the front surface of the main body inner cylinder, (e) is a side view of the main body inner cylinder, and (f) is a front view of the main body inner cylinder of FIG. 8 (e). It is a plan view, and (g) is a cross-sectional view of a side surface of a main body inner cylinder. (A) is a front view of the female screw member, (b) is a plan view of the female screw member as viewed from the front, (c) is a bottom view of the female screw member, and (d) is a female screw member. It is a cross-sectional view of the front surface of the above, and (e) is a side view of a female screw member. (A) is a front view of the drive body, (b) is a plan view of the drive body as viewed from the front, and (c) is a cross-sectional view of the front of the drive body. (A) is a front view of the push rod, (b) is a plan view of the push rod as viewed from the front, and (c) is a cross-sectional view of the front of the push rod. It is a front view of a coil spring. (A) is a front view of the cushion member, (b) is a plan view of the cushion member as viewed from the front, and (c) is a cross-sectional view of the front of the cushion member. It is sectional drawing of the front which shows the state which the push rod of the cartridge type cosmetic container which concerns on 2nd Embodiment of this invention is located at the retracting limit. (A) is a front sectional view showing a state in which the push rod of the cartridge type cosmetic container according to the second embodiment of the present invention is located at the forward limit, and FIG. 15 (a) is a front sectional view showing a state in which the push rod is located at the forward limit. It is an enlarged sectional view of EE in FIG. 15C, and FIG. 15C is an enlarged view of a portion P in FIG. (A) is a side view of the cartridge outer cylinder, and (b) is a sectional view of the front surface of the cartridge outer cylinder. (A) is a front view of a support member, (b) is a cross-sectional view of the front of the support member, and (c) is a side view of the support member. (A) is a front view of a push rod, and (b) is a cross-sectional view of the front of the push rod. It is sectional drawing of the front which shows the state which the push rod of the cartridge type cosmetic container which concerns on 3rd Embodiment of this invention is located at the retracting limit. (A) is a front sectional view showing a state in which the push rod of the cartridge type cosmetic container according to the third embodiment of the present invention is located at the forward limit, and (b) is a front sectional view showing a state of FIG. 20 (a). It is an enlarged sectional view of FF in the above. (A) is a side view of the cartridge outer cylinder, (b) is a bottom view of the cartridge outer cylinder, (c) is a cross-sectional view of the front of the cartridge outer cylinder, and (d) is a cartridge. It is a top view which looked at the outer cylinder from the front. (A) is a front view of a support member, (b) is a cross-sectional view of the front of the support member, and (c) is a side view of the support member. (A) is a front view of the push rod, (b) is a plan view, a perspective view and a bottom view of the connecting member as viewed from the front, and (c) is a cross-sectional view of the front of the push rod. d) is a cross-sectional view of the connecting member.

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

(First Embodiment)
The cartridge type cosmetic container 100 according to the first embodiment of the present invention will be described with reference to the drawings. The cartridge-type cosmetic container 100 includes a cartridge holder 1 and a cartridge 2. For convenience of explanation, the tip side of the cartridge 2 in which the cosmetic 4 appears is the front side of the cartridge type cosmetic container 100, and the bottom 37 side of the drive body 30 of the cartridge holder 1 is the rear side of the cartridge type cosmetic container 100. The front-back direction of the formula cosmetic container 100 is defined. Regarding the cartridge 2, the front end side of the cartridge 2 in which the cosmetics 4 appear is the front side of the cartridge 2, and the side attached to the cartridge holder 1 is the rear side of the cartridge 2. Regarding the cartridge holder 1, the opening side of the main body cylinder 20 to which the cartridge 2 is mounted is the front side of the cartridge holder 1, and the bottom 37 side of the drive body 30 is the rear side of the cartridge holder 1.

An outline of the overall configuration of the cartridge type cosmetic container 100 will be described with reference to FIGS. 1 and 2. The cartridge type cosmetic container 100 is used by attaching the cartridge 2 containing the cosmetic 4 to the cartridge holder 1. The cartridge 2 includes a cartridge outer cylinder 10, a cosmetic 4 housed in the cartridge outer cylinder 10, a support member 70 housed in the cartridge outer cylinder 10 and supporting the cosmetic 4, and a cap 3 attached to the cartridge outer cylinder 10. And prepare.

The cartridge holder 1 is provided with a main body cylinder 20 to which the cartridge outer cylinder 10 is detachably attached to the front end portion and a drive body 30 provided at the rear end portion of the main body cylinder 20 so as to be coaxial and relative to the main body cylinder 20. A female screw member 50 provided on the main body cylinder 20 and having a female screw 53 formed on the inner circumference, and a push rod 60 having a male screw 61a provided on the drive body 30 and screwed on the female screw 53 of the female screw member 50 formed on the outer periphery thereof. A cushion member 80 provided coaxially with the main body cylinder 20 and a coil spring 7 as an urging member are provided.

The push rod 60 is a shaft-shaped member extending in the central axial direction (hereinafter, simply referred to as the axial direction) of the main body cylinder 20, and engages with the drive body 30 so that the base end portion rotates integrally with the drive body 30. However, the tip portion is arranged so as to be movable in the axial direction in the main body cylinder 20.

The cosmetic 4 in the cartridge 2 is fed and forwarded from the tip of the cartridge 2 by moving the push rod 60 back and forth by the feeding mechanism 8 provided in the cartridge holder 1. The feeding mechanism 8 has a female screw member 50 on which the female screw 53 is formed and a push rod 60 on which the male screw 61a is formed, and the push rod 60 is moved in the axial direction by screwing the female screw 53 and the male screw 61a.

The push rod 60 advances and retreats due to the relative rotation between the main body cylinder 20 and the drive body 30, and the cosmetic 4 contained in the cartridge outer cylinder 10 is transferred from the front end opening 11a on the tip end side of the cartridge outer cylinder 10 via the support member 70. Infest.

When the user rotates the drive body 30 in one direction (forward rotation) with respect to the main body cylinder 20, the push rod 60 moves forward in the axial direction (that is, moves forward), and the support member 70 connected to the push rod 60 is moved. The cosmetic 4 is extruded through the front end opening 11a of the cartridge 2. When the user rotates (reverses) the drive body 30 with respect to the main body cylinder 20, the push rod 60 moves backward in the axial direction (that is, retracts), and the support member 70 connected to the push rod 60 is moved. The cosmetic 4 protruding from the front end opening 11a of the cartridge 2 is pulled back to the front end opening 11a of the cartridge 2.

When the cosmetic 4 in the cartridge 2 is exhausted, the user can use the cartridge type cosmetic container 100 again by replacing the used cartridge 2 with a new cartridge 2. In addition, the user can replace the cartridge 2 in use with another cartridge 2 in use.

The cartridge 2 will be described in detail with reference to FIGS. 1 and 3 to 5. The cartridge 2 is attached to the cartridge holder 1 containing the push rod 60 so that the feeding mechanism 8 works, and the stored cosmetics 4 advance and retreat in conjunction with the advance and retreat of the push rod 60.

As shown in FIG. 1, the rear end portion of the cartridge 2 is attached to the front end portion of the main body cylinder 20 of the cartridge holder 1. As shown in FIG. 3, the cartridge 2 includes a cartridge outer cylinder 10 formed in a substantially cylindrical shape, and a support member 70 housed in the cartridge outer cylinder 10 and slidable inside the cartridge outer cylinder 10 in the axial direction. A cap 3 attached to the cartridge outer cylinder 10 is provided.

As shown in FIG. 4D, the cartridge outer cylinder 10 has a through hole 17 that penetrates the cartridge outer cylinder 10 in the front-rear direction so as to communicate the front end opening 11a on the distal end side and the rear end opening 11b on the proximal end side. Have. As shown in FIG. 3A, the through hole 17 accommodates the cosmetic 4 and the support member 70 that supports the cosmetic 4. The details of the configuration of the through hole 17 will be described later.

As shown in FIG. 4, the cartridge outer cylinder 10 has an outer shell portion 12 constituting the outer shell on the front side of the cartridge type cosmetic container 100, and an fitting portion 16 fitted into the main body cylinder 20 of the cartridge holder 1. A flange 14 is provided at the rear end of the outer shell portion 12. A front end opening 11a of the through hole 17 is formed at the front end of the outer shell portion 12. A rear end opening 11b of the through hole 17 is formed at the rear end of the fitting portion 16.

The fitting portion 16 is formed in a substantially cylindrical shape. The inner circumference of the fitting portion 16 is continuously formed on the inner circumference of the outer shell portion 12. A male screw 15 is formed on the outer periphery of the fitting portion 16 in the axial direction from the flange 14. The male screw 15 of the cartridge 2 is screwed into the female screw 43 (see FIG. 6A) of the main body cylinder 20 of the cartridge holder 1.

As shown in FIG. 3, a rib 13a and a fitting convex portion 13b are provided on the outer periphery of the outer shell portion 12. When the cap 3 is attached to the cartridge outer cylinder 10, the rib 13a engages with the knurl 3a provided on the inner circumference of the cap 3 and locks the cap 3 in the circumferential direction. When the cap 3 is mounted on the cartridge outer cylinder 10, the fitting protrusion 13b fits with the fitting recess 3b provided on the inner circumference of the cap 3 and locks the cap 3 in the axial direction.

The flange 14 is an annular flange member provided so as to project outward in the radial direction, and as shown in FIG. 1, when the cartridge outer cylinder 10 is attached to the main body cylinder 20, the main body cylinder 20 The position of the cartridge outer cylinder 10 in the axial direction in contact with the opening edge of the front end is defined. Further, the flange 14 contacts the opening edge of the rear end of the cap 3 when the cap 3 is attached to the cartridge outer cylinder 10, and defines the position of the cap 3 in the axial direction.

As shown in FIG. 3, the cap 3 is formed in a bottomed cylindrical shape with one end open. The cap 3 is attached to the outer shell portion 12 of the cartridge outer cylinder 10 to close the front end opening 11a. The cap 3 has a knurl 3a that engages with the rib 13a of the cartridge outer cylinder 10 and an annular fitting recess 3b that fits into the fitting protrusion 13b of the cartridge outer cylinder 10 on the inner circumference of the opening end. Is provided.

The support member 70 is a member that supports the cosmetics 4, is inserted into the through hole 17 that penetrates the cartridge outer cylinder 10 in the axial direction, and moves axially in the through hole 17 as the push rod 60 advances and retreats. ..

As shown in FIG. 5A, the support member 70 includes a front support member (tip side support member) 70F that constitutes the front side portion of the support member 70, and a rear side support member that constitutes the rear side portion of the support member 70. (Base end side support member) 70R and.

As shown in FIG. 5B, the front support member 70F has a bottomed cylindrical support cylinder 72 having an open front end and a fitting cylinder portion 71 extending rearward from the bottom 74 of the support cylinder 72. And have. The fitting cylinder portion 71 is formed in a cylindrical shape, and an opening communicating with the inside of the fitting cylinder portion 71 is formed in the bottom portion 74 of the support cylinder portion 72.

The fitting cylinder portion 71 has an annular fitting recess 71a on the inner circumference in the vicinity of the support cylinder 72. A knurl 71b extending in the axial direction is formed on the inner circumference of the fitting cylinder portion 71 from the central portion in the front-rear direction of the fitting cylinder portion 71 to the rear end opening 71c.

As shown in FIG. 5C, the rear support member 70R includes a columnar shaft body 75, a shaft body portion 78 extending in the axial direction at the tip (front end) of the shaft body 75, and a shaft body 75. It has a plurality of bend pieces 77 provided at the base end (rear end) of the above.

The tip portion of the shaft body 75 is a portion fitted into the front support member 70F, and an annular fitting convex portion 79a is provided on the outer periphery of the vicinity of the tip end of the shaft body 75. A plurality of ribs 79b extending rearward in the axial direction are formed on the outer periphery of the shaft body 75 from the rear of the fitting convex portion 79a over a predetermined length. A plurality of ribs 75a extending forward in the axial direction are formed on the outer periphery of the shaft body 75 over a predetermined length from the base end (rear end) of the shaft body 75.

The shaft body portion 78 extends forward in the axial direction from the tip of the shaft body 75. The shaft body portion 78 has a cylindrical columnar portion 78b and a head 78a provided at the tip of the columnar portion 78b. The head 78a has a truncated cone shape in which the diameter increases from the tip of the cylindrical portion 78b toward the tip of the head 78a.

When the tip end portion of the rear side support member 70R is inserted from the rear end opening 71c of the front side support member 70F and the fitting convex portion 79a and the fitting concave portion 71a are fitted, as shown in FIG. 5A. , The front support member 70F and the rear support member 70R are connected. Since the rib 79b engages with the knurl 71b, the relative rotation of the front support member 70F and the rear support member 70R is restricted.

By connecting the front side support member 70F and the rear side support member 70R, a rod shaft portion 175 extending in the axial direction from the bottom portion 74 of the support cylinder 72 is formed. The rod shaft portion 175 is composed of a fitting cylinder portion 71 of the front side support member 70F and a shaft main body 75 of the rear side support member 70R. The axial length of the rod shaft portion 175 is longer than the axial length of the support cylinder 72. The rod shaft portion 175 extends axially from the bottom portion 74 of the support cylinder 72, and has a contact surface 76 at the rear end, which is in contact with the tip of the push rod 60. As will be described later, the contact surface 76 is pushed by the push rod 60, and the support member 70 advances together with the push rod 60, so that the cosmetic 4 supported by the support cylinder 72 is paid out from the front end opening 11a.

The rod shaft portion 175 and the support cylinder 72 provided at the tip of the rod shaft portion 175 are concentric. The outer diameter dimension of the rod shaft portion 175, that is, the outer diameter dimension DRf of the fitting cylinder portion 71 and the outer diameter dimension DRr of the shaft body 75 are smaller than the outer diameter dimension DT of the support cylinder portion 72, respectively (DT> DRf, DT>. DRr). The magnitude relationship between the outer diameter dimension DRf of the fitting cylinder portion 71 and the outer diameter dimension DRr of the shaft body 75 is DRf> DRr.

As shown in FIGS. 1 and 5A, the cosmetic 4 is fixed to the inner peripheral surface of the support cylinder 72, and the outer peripheral surface of the cosmetic 4 is maintained in a state of being supported by the support cylinder 72. That is, the cosmetic 4 is held by the support cylinder 72. Since the columnar portion 78b of the shaft body portion 78 projects from the bottom portion 74 of the support cylinder 72 to the inside of the support cylinder 72, the entire shaft body portion 78 is embedded in the cosmetics 4. The head 78a provided at the tip of the shaft body 78 has a larger diameter than the columnar portion 78b, and the cosmetic 4 is caught on the tapered surface which is the outer peripheral side surface of the shaft body 78 when the cosmetic 4 is carried back. This prevents the cosmetic 4 from coming off in the axial direction.

As shown in FIG. 5, the plurality of bend pieces 77 are coupled to the rear end (that is, the contact surface 76) of the rod shaft portion 175 and extend substantially in the axial direction from the rear end of the rod shaft portion 175. More specifically, the plurality of bend pieces 77 extend so as to gradually open outward from the proximal end side toward the distal end side, that is, to move away from the central axis of the support member 70 toward the distal end side.

The bend piece 77 includes a bend piece main body portion 77c extending from the rear end of the rod shaft portion 175, and a protrusion 77b protruding inward from the inner peripheral surface of the tip end portion of the bend piece main body portion 77c.

In the present embodiment, the four bend pieces 77 are provided at intervals of 90 degrees in the circumferential direction about the central axis of the support member 70, and the pair of bend pieces 77 facing each other are paired toward the tip. It is inclined with respect to the central axis of the support member 70 so that the dimension between the bend piece main body portions 77c becomes large.

The outer peripheral surface of the plurality of bend pieces 77 is located radially outward of the outer peripheral surface of the rod shaft portion 175. Here, the dimension between the tips of the pair of bend piece main bodies 77c facing each other, that is, the maximum external dimension between the pair of bend piece main bodies 77c is defined as the opening / closing external dimension DB (see FIG. 5A). The opening / closing portion outer diameter dimension DB is larger than the outer diameter dimensions DRf and DRr of the rod shaft portion 175 and smaller than the outer diameter dimension DT of the support cylinder 72 (DRr <DRf <DB <DT).

The plurality of bend pieces 77 are elastic members that elastically deform between an open state that is radially outwardly open (see FIG. 1) and a closed state that is radially inwardly closed (see FIG. 2). The plurality of bend pieces 77 function as an opening / closing portion that can be opened / closed by elastic deformation, and is a portion connected to the tip of the push rod 60. The bend piece 77 is a fixed end whose base end is coupled to the rod shaft portion 175, whose tip is a free end, and is in an open state when no external force is applied.

The open / closed state of the bend piece 77 is controlled by the inner peripheral surface of the through hole 17. The bend piece 77 is elastically deformed (bent) by the inner peripheral surface of the through hole 17 to be in a closed state. The tip of the bend piece 77 is located on the central axis side of the support member 70 when it is in the closed state and as compared to when it is in the open state. At the base end of the support member 70, a recess 77p (see FIG. 2) into which the fitting portion 67 (see FIG. 11) at the tip of the push rod 60, which will be described later, is fitted is formed. The contact surface 76 corresponds to the bottom surface of the recess 77p, and the inner peripheral surface of the plurality of bend pieces 77 corresponds to the side surface of the recess 77p.

As shown in FIG. 2, the rod shaft portion 175 refers to a portion between the support cylinder 72 and the bend piece 77. The axial length of the rod shaft portion 175, that is, the axial length from the outer surface of the bottom portion 74 of the support cylinder 72 to the contact surface 76, is the axial length LR1 from the backward limit (see FIG. 1) of the support member 70 to the forward limit. The stroke (movement amount) up to (see FIG. 2) is set to a length of SP1 or more (LR1 ≧ SP1).

As described above, the support member 70 has a function of supporting the cosmetic 4 and a function of being connected to the tip of the push rod 60. As shown in FIG. 5, in the present embodiment, the front support member 70F having the support cylinder 72 for supporting the cosmetic 4 and the rear support member 70R having the bend piece 77 have different functions according to their respective functions. Molded from different materials. Further, in the present embodiment, the cartridge outer cylinder 10 is molded from a material different from the front support member 70F and the rear support member 70R.

The cartridge outer cylinder 10 is formed of, for example, ABS resin or ASA resin having excellent impact resistance and rigidity. Therefore, the cosmetic 4 and the support member 70 housed inside the cartridge outer cylinder 10 can be appropriately protected.

The front support member 70F is formed of a material that is more flexible than the material of the cartridge outer cylinder 10 and the material of the rear support member 70R and has excellent chemical resistance (acid resistance and alkali resistance). As the material of the front support member 70F, for example, polyethylene (PE) having a lower flexural modulus than the material of the cartridge outer cylinder 10 and the rear support member 70R is adopted.

On the other hand, the rear support member 70R is molded by, for example, polyacetal (POM) as a material having higher tensile strength and bending strength than the material of the front support member 70F, excellent wear resistance, and self-lubricating property. Will be done.

As will be described later, the bend piece 77 provided on the rear support member 70R is closed when inserted into the sliding hole 17b and is connected to the fitting portion 67 of the push rod 60, and the fitting portion 67 of the push rod 60 is connected. At the same time, it moves back and forth in the sliding hole 17b. That is, the bend piece 77 slides back and forth in the sliding hole 17b as the push rod 60 advances and retreats. In the present embodiment, since the bend piece 77 is formed of a material having excellent self-lubricating property, the bend piece 77 can smoothly move back and forth inside the sliding hole 17b. As a result, the operability of the cartridge type cosmetic container 100 is improved.

Further, since the bend piece 77 is formed of a material having excellent wear resistance, the bend piece 77 is prevented from being worn down due to contact with the inner peripheral surface of the sliding hole 17b even after repeated use, and as a result, the bend piece 77 is prevented from being worn down. , The life of the cartridge 2 can be improved.

Further, when the push rod 60 retracts in the sliding hole 17b, a strong tensile force acts on the bend piece 77 from the fitting portion 67, but in the present embodiment, the tensile strength and the bending strength are high. The bend piece 77 is formed from the material. Therefore, even if the bend piece 77 is easily deformed with the base end portion of the bend piece 77 as a fulcrum by reducing the thickness of the bend piece 77, the base end portion of the bend piece 77 or the like is formed. It can be prevented from being damaged.

With reference to FIGS. 3 and 4, the through hole 17 in which the cosmetic 4 and the support member 70 are housed will be described in detail. As shown in FIG. 4D, the through holes 17 are, in order from the tip end side (front end side) to the proximal end side (rear end side) of the cartridge outer cylinder 10, the tip accommodating holes 17a and the sliding holes 17b. , Has a proximal hole 17c.

The sliding hole 17b is a through hole for connecting the tip of the push rod 60 and the base end of the support member 70 by the connecting portion 99. In the sliding hole 17b, the connecting portion 99 slides in a state where the connection cannot be released. The tip accommodating hole 17a is a through hole in which the cosmetic 4 is accommodating. The base end hole 17c is a through hole formed to a size that allows the connection between the tip of the push rod 60 and the base end of the support member 70 by the connecting portion 99 to be released. The tip accommodating hole 17a and the sliding hole 17b are communicated with each other, and the sliding hole 17b and the base end hole 17c are communicated with each other.

The tip accommodating hole 17a is provided on the tip side of the cartridge outer cylinder 10. The tip accommodating hole 17a is a circular opening into which the support cylinder 72 and the cosmetic 4 slide.

The base end hole 17c is provided between the rear end opening 11b and the sliding hole 17b so as to communicate the rear end opening 11b and the sliding hole 17b. The proximal hole 17c has a proximal cavity portion 17i provided on the proximal end side in the proximal end hole 17c, and a tapered hole 17f provided between the proximal end cavity portion 17i and the sliding hole 17b. The tip accommodating hole 17a, the sliding hole 17b, the tapered hole 17f, and the proximal cavity portion 17i each have a concentric circular cross section or a substantially circular cross section.

The sliding hole 17b is a through hole provided on the base end side of the cartridge outer cylinder 10 and in which a substantially cylindrical opening / closing portion composed of a plurality of bend pieces 77 slides in a reduced diameter state. The sliding hole 17b is a through hole for advancing and retreating the connecting portion 99 between the base end of the support member 70 and the tip of the push rod 60 in a state where the connection cannot be released, and communicates with each of the tip accommodating hole 17a and the base end hole 17c. It is provided. The base end hole 17c can expand the diameter of a substantially tubular opening / closing portion composed of a plurality of bend pieces 77 behind the sliding hole 17b, that is, on the base end side of the cartridge outer cylinder 10 with respect to the sliding hole 17b. Area.

As shown in FIGS. 3 and 4, the tip accommodating hole 17a accommodates the support cylinder 72 and the cosmetic 4 supported by the support cylinder 72. The inner diameter dimension DL1 of the tip accommodating hole 17a is slightly larger than the outer diameter dimension DT of the support cylinder 72 (DL1> DT). Therefore, a slight gap is formed between the inner peripheral surface of the tip accommodating hole 17a and the outer peripheral surface of the support cylinder 72. On the outer peripheral surface of the support cylinder 72, a plurality of protrusions 73 protruding outward in the radial direction are provided at equal intervals in the circumferential direction. The support cylinder 72 slides in the tip accommodating hole 17a in the axial direction in a state where the protrusion 73 is in contact with the inner peripheral surface of the tip accommodating hole 17a.

The inner diameter dimension DL1 of the tip accommodating hole 17a is larger than the inner diameter dimension DS of the sliding hole 17b (DL1> DS). Since the inner diameter DS of the sliding hole 17b is smaller than the inner diameter DL1 of the tip accommodating hole 17a, a step portion 17d is formed between the tip accommodating hole 17a and the sliding hole 17b. The inner diameter DS of the sliding hole 17b is slightly larger than the outer diameter DRf of the rod shaft portion 175 of the support member 70 (DS> DRf). Further, the inner diameter DS of the sliding hole 17b is smaller than the outer diameter DT of the support cylinder 72 (DS <DT). That is, the stepped portion 17d, which is the opening edge portion of the sliding hole 17b, functions as a regulating portion that regulates the movement of the support cylinder 72 to the proximal end side of the cartridge outer cylinder 10.

The inner diameter dimension DL2 of the proximal end cavity portion 17i of the proximal end hole 17c is larger than the inner diameter dimension DS of the sliding hole 17b (DL2> DS). A tapered hole 17f whose diameter gradually decreases from the proximal cavity portion 17i toward the sliding hole 17b is provided between the proximal cavity portion 17i and the sliding hole 17b. The tapered surface of the tapered hole 17f is continuous with the inner peripheral surface of the sliding hole 17b at the front end and continuous with the inner peripheral surface of the proximal cavity portion 17i at the rear end.

An uneven portion (flat knurl) 18 extending in the axial direction is formed on the inner peripheral surface of the sliding hole 17b by knurling. As shown in FIGS. 4 (b) and 4 (d), the uneven portion 18 has a wavy cross section in which peaks and valleys are alternately arranged in the circumferential direction, and the entire sliding hole 17b. It is formed continuously over.

In the present embodiment, the inner diameter DS of the sliding hole 17b refers to the diameter of a virtual circular cross section connecting the tops of a plurality of peaks of the uneven portion 18 in the sliding hole 17b. The rib 75a of the rod shaft portion 175 described above is fitted into the valley portion, that is, the groove portion of the uneven portion 18.

As described above, the through hole 17 controls the open / closed state of the bend piece 77 by its inner peripheral surface. As shown in FIG. 4D, in the present embodiment, the inner diameter DS of the sliding hole 17b is smaller than the opening / closing outer dimension DB (see FIG. 3D) (DS <DB). Therefore, when the bend piece 77 is located in the sliding hole 17b, the bend piece main body portion 77c of the plurality of bend pieces 77 is pressed inward by the top of the mountain portion of the uneven portion 18 in the sliding hole 17b. It is in a closed state (see FIG. 2 (b)).

The inner diameter dimension DL2 of the proximal end cavity portion 17i of the proximal end hole 17c is larger than the opening / closing portion outer dimension DB (see FIG. 3D) (DL2> DB). Therefore, when the tip of the bend piece 77 is located in the proximal cavity portion 17i, the tips of the plurality of bend pieces 77 are not in contact with the inner peripheral surface of the through hole 17, and are in an open state. It should be noted that when the tip of the bend piece 77 is located in the proximal cavity portion 17i, it is sufficient that the plurality of bend pieces 77 are in an open state and the connection between the push rod 60 and the support member 70 can be released. The tips of the plurality of bend pieces 77 may be in contact with the inner peripheral surface of the through hole 17. In this case, the inner diameter dimension DL2 of the proximal cavity portion 17i is slightly smaller than the opening / closing portion outer diameter dimension DB (see FIG. 3D) (DL2 <DB).

The rib 75a of the rod shaft portion 175 engages with the valley portion, that is, the groove portion of the uneven portion 18 of the through hole 17, so that the support member 70 cannot move in the circumferential direction with respect to the cartridge outer cylinder 10, that is, relative rotation is impossible. Become. As a result, the top surface 62 of the push rod 60 advances and retreats while rotating with respect to the contact surface 76 of the support member 70, the rotational force due to friction is transmitted to the rod shaft portion 175, and the support member 70 is inside the cartridge outer cylinder 10. Relative rotation can be prevented by engaging the rib 75a with the groove portion.

The procedure for assembling the cartridge 2 will be described with reference to FIGS. 3 to 5.

The front support member 70F is inserted into the through hole 17 from the front end opening 11a of the cartridge outer cylinder 10 by using a jig or the like. The rear support member 70R is inserted into the through hole 17 from the rear end opening 11b of the cartridge outer cylinder 10 by using a jig or the like. By inserting the front support member 70F from the front end opening 11a and inserting the rear support member 70R from the rear end opening 11b, the front support member 70F and the rear support member 70R can be connected.

The front support member 70F and the rear support member 70R may be connected in advance, and then the support member 70 may be inserted through the front end opening 11a. In this case, the support member 70 is inserted until the bottom portion 74 of the support cylinder 72 abuts on the stepped portion 17d of the through hole 17. That is, the retreat limit of the support member 70 is defined by the bottom portion 74 and the step portion 17d of the support cylinder 72.

When the support member 70 is inserted from the front end opening 11a, the bend piece 77 is in the open state when it is located in the tip accommodating hole 17a, but is closed when it is inserted up to the sliding hole 17b. The bend piece 77 is closed when it is located in the sliding hole 17b, but when it is inserted into the tapered hole 17f from the sliding hole 17b, it gradually expands outward along the tapered surface of the tapered hole 17f. When it is inserted up to the proximal cavity 17i, it returns to the open state.

The bottom portion 74 of the support cylinder 72 is in contact with the stepped portion 17d provided in the through hole 17, and the stepped portion 17d restricts the rearward movement of the support cylinder 72. Therefore, even if an external force toward the rear is applied to the support member 70, the support member 70 is prevented from falling off from the rear end opening 11b of the cartridge outer cylinder 10.

In the present embodiment, the outer diameter DT of the support cylinder 72 that supports the cosmetic 4 is made larger than the outer diameters DRf and DRr of the rod shaft portion 175 extending from the support cylinder 72, so that the support cylinder has a larger diameter. The bottom portion 74 of the 72 comes into contact with the stepped portion 17d, and the support member 70 is prevented from falling off from the rear end opening 11b of the cartridge outer cylinder 10. That is, in the present embodiment, the support cylinder 72 formed to have a diameter larger than that of the rod shaft portion 175 functions as a means for preventing the support member 70 from falling off to the rear end opening 11b of the cartridge outer cylinder 10. The position of the support member 70 when the bottom portion 74 of the support cylinder 72 abuts on the step portion 17d and the position of the support cylinder 72 is defined in the tip accommodating hole 17a is defined as the retreat limit of the support member 70.

A plurality of protrusions 73 provided on the outer peripheral surface of the support cylinder 72 are pressed against the inner peripheral surface of the tip accommodating hole 17a of the cartridge outer cylinder 10. Therefore, when the front end opening 11a of the cartridge 2 is directed directly downward, the support member 70 is prevented from falling off from the front end opening 11a of the cartridge outer cylinder 10 due to its own weight.

After the support member 70 is attached to the cartridge outer cylinder 10, the heated and melted liquid cosmetic 4 is poured from the front end opening 11a of the cartridge outer cylinder 10 into the tip accommodating hole 17a to cool and solidify the cosmetic 4. The cosmetic 4 becomes a stick-shaped cosmetic core by solidifying. The cosmetic 4 is fixed to the inner peripheral surface of the support cylinder 72 and the outer peripheral surface of the shaft body portion 78. By adhering the cosmetic 4 not only to the support cylinder 72 but also to the outer peripheral surface of the shaft body portion 78, the adhesive force of the cosmetic 4 to the support member 70 can be improved.

Most of the cosmetics 4 filled in the cartridge outer cylinder 10 by such a method are soft such as gel. Therefore, when the user uses the cartridge type cosmetic container 100, if the cosmetic 4 is excessively taken out from the front end opening 11a, the cosmetic core may be broken. Therefore, in the present embodiment, the pitch of the male screw 61a of the push rod 60 is set to a pitch at which the push rod 60 can be finely moved, so that when the user uses the cartridge type cosmetic container 100, the cosmetic 4 is provided from the front end opening 11a. Prevents over-delivery.

As described above, a slight gap is formed between the outer peripheral surface of the support cylinder 72 and the inner peripheral surface of the tip accommodating hole 17a. Therefore, when the cosmetic 4 is filled into the tip accommodating hole 17a from the front end opening 11a, air can be released to the rear as well. As a result, the melted liquid cosmetic 4 can be smoothly poured into the tip accommodating hole 17a, and the working time can be shortened. It also prevents the formation of voids (cavities) that occur when air remains inside the cosmetics.

In this embodiment, the support cylinder 72 is formed of a material having excellent flexibility. Therefore, the support cylinder 72 housed in the tip accommodating hole 17a with the protrusion 73 pressed against the inner peripheral surface of the tip accommodating hole 17a is curved so that the outer peripheral surface slightly undulates. A part of the outer peripheral surface of the support cylinder 72 is in contact with the inner peripheral surface of the tip accommodating hole 17a. Therefore, the contact area between the support member 70 and the tip accommodating hole 17a can be increased as compared with the case where only the protrusion 73 is brought into contact with the tip accommodating hole 17a. As a result, when the molten liquid cosmetic 4 is poured into the tip accommodating hole 17a, the liquid cosmetic 4 slides from the gap between the outer peripheral surface of the support cylinder 72 and the inner peripheral surface of the tip accommodating hole 17a. It is possible to prevent the vehicle from entering the moving hole 17b or the base end hole 17c and leaking from the rear end opening 11b.

The cartridge 2 is a single unit as a cartridge 2 containing the cosmetic 4 in a state where the cap 3 is attached to the cartridge outer cylinder 10 in which the support member 70 is inserted and the cosmetic 4 is housed (see FIG. 3A). Sold at. Further, the cartridge type cosmetic container 100 (see FIG. 1) in which the cartridge 2 is attached to the cartridge holder 1 may be sold. Further, the cartridge holder 1 may be sold as a single unit.

The cartridge holder 1 to which the cartridge 2 is attached and used will be described in detail with reference to FIGS. 6 to 13. Here, as shown in FIG. 6, the position of the push rod 60 in the state before the cartridge 2 is attached to the main body cylinder 20 of the cartridge holder 1 is referred to as an “initial position”.

As shown in FIG. 6, the main body cylinder 20 includes a main body outer cylinder 21 to which a drive body 30 is attached so as to be relatively rotatable, and a main body inner cylinder 40 inserted inside the main body outer cylinder 21.

As shown in FIG. 7, the main body outer cylinder 21 is formed in a substantially cylindrical shape having a front end opening 22 and a rear end opening 29. The main body cylinder 40 (see FIG. 8) is inserted into the inside of the main body outer cylinder 21 from the front end opening 22. The drive body 30 (see FIG. 10) is inserted inside the main body outer cylinder 21 from the rear end opening 29.

The main body outer cylinder 21 has an annular fitting recess 23 that fits with the main body inner cylinder 40 on the inner circumference in the vicinity of the front end opening 22. The main body outer cylinder 21 has an annular fitting recess 28 that rotatably fits with the drive body 30 on the inner circumference in the vicinity of the rear end opening 29.

The outer cylinder 21 of the main body is provided with a proximity guide portion (first guide portion) 25 and a guide wall portion 26 on the inner circumference thereof. The proximity guide portion 25 is formed so as to project inward in the radial direction at substantially the center of the outer cylinder 21 in the axial direction. The guide wall portion 26 is formed so as to project inward in the radial direction in the region from the substantially center of the front end opening 22 and the proximity guide portion 25 to the proximity guide portion 25.

The guide wall portion 26 engages with a guide portion 45 (see FIG. 8), which will be described later, provided on the outer periphery of the inner cylinder 40 of the main body. The guide wall portion 26 and the guide portion 45 define the position of the main body inner cylinder 40 in the circumferential direction with respect to the main body outer cylinder 21, and the relative rotation between the main body outer cylinder 21 and the main body inner cylinder 40 becomes impossible. In this way, the guide wall portion 26 guides the main body inner cylinder 40 so as not to rotate when the main body inner cylinder 40 is inserted inside the main body outer cylinder 21.

A pair of proximity guide portions 25 are provided so as to face each other in the radial direction. Each proximity guide portion 25 has an inclined surface 25a that is inclined with respect to the axial direction. The inclined surface 25a of the proximity guide portion 25 comes into contact with the rear end surface 55b (see FIG. 9) of the blade portion 55, which will be described later, of the female screw member 50 when the cartridge outer cylinder 10 is attached to the main body cylinder 20. Since the inclined surface 25a is inclined with respect to the axial direction, the female screw member 50 moves in the axial direction together with the cartridge outer cylinder 10 and moves toward the center in the radial direction.

As shown in FIG. 10, the drive body 30 has a circular opening 30a extending in the front-rear direction, and has a bottomed substantially cylindrical shape in which the front end is opened and the rear end is closed by the bottom 37. It is formed. The drive body 30 has an fitting portion 31 that is fitted into the outer cylinder 21 of the main body, and a knob portion 32 that is continuously formed in the fitting portion 31 and is picked and used by the user.

The fitting portion 31 is formed in a substantially cylindrical shape. On the outer periphery of the vicinity of the base end of the fitting portion 31 (near the knob portion 32), a fitting convex portion 34 that fits into the fitting concave portion 28 (see FIG. 7) of the main body outer cylinder 21 is formed in an annular shape. Further, an annular O-ring groove 33 is formed on the outer periphery of the fitting portion 31 in front of the fitting convex portion 34. By attaching the O-ring 6 (see FIG. 6) to the O-ring groove 33, it is possible to impart an appropriate resistance to the relative rotation between the main body outer cylinder 21 and the drive body 30, and it is possible to improve the operability by the user. ..

The knob portion 32 is formed to have a larger diameter than the fitting portion 31. The knob portion 32 is formed to have substantially the same diameter as the outer diameter of the main body outer cylinder 21. As a result, when the drive body 30 is assembled to the main body outer cylinder 21, the outer peripheral surface of the main body outer cylinder 21 and the outer peripheral surface of the grip portion 32 become substantially flush with each other (see FIG. 6).

The drive body 30 is provided with a plurality of grooves 35 that are non-rotatably engaged with the push rod 60.

The groove 35 is provided on the inner peripheral surface of the opening 30a and extends axially from the bottom portion 37 of the drive body 30 to the front end opening 39. When the groove 35 engages with the rib 63b (see FIG. 11) of the flange portion 63 of the push rod 60, which will be described later, the relative rotation between the drive body 30 and the push rod 60 becomes impossible. In this embodiment, four grooves 35 are provided.

As shown in FIG. 11, the push rod 60 is formed in a substantially columnar shape. The push rod 60 is housed inside the main body cylinder 20 and the drive body 30 (see FIG. 6). The push rod 60 includes a rod shaft 61 provided coaxially with the main body cylinder 20 and the drive body 30, a top surface 62 provided at one end of the rod shaft 61, a flange portion 63 provided at the other end of the rod shaft 61, and a flange portion. It has a cavity 64 that is axially recessed from 63.

On the outer circumference of the rod shaft 61, a male screw 61a into which the female screw 53 (see FIG. 9) of the female screw member 50 is screwed is formed. The cosmetic 4 (see FIGS. 1 and 2) contained in the cartridge 2 is extruded little by little and used. Therefore, the pitch of the male screw 61a is set to a pitch at which the push rod 60 can be finely moved.

When the push rod 60 is extended forward by the relative rotation between the main body cylinder 20 and the drive body 30, the top surface 62 of the push rod 60 presses the support member 70, and the cosmetic 4 in the cartridge outer cylinder 10 is ejected from the front end opening 11a. Extruded. The top surface 62 of the push rod 60 is the contact surface 76 of the support member 70 of the cartridge 2 from the state before the start of use (see FIG. 1) to the use limit state (see FIG. 2) in which the push rod 60 is extended to the maximum. Contact (see FIG. 5). Therefore, the stroke (movement amount) from the backward limit to the forward limit of the push rod 60 is equal to the stroke (movement amount) from the backward limit to the forward limit of the support member 70. In the state before the start of use (see FIG. 1), there may be a slight gap between the top surface 62 of the push rod 60 and the contact surface 76 of the support member 70. In this case, the stroke (movement amount) from the retreat limit to the forward limit of the push rod 60 is larger than the stroke (movement amount) from the retreat limit to the forward limit of the support member 70.

The flange portion 63 is formed in the shape of a disk having a larger diameter than the rod shaft 61. The flange portion 63 has a spring mounting surface 63a on which the coil spring 7 is mounted, and a rear end surface 63c formed on the opposite side of the spring mounting surface 63a. The flange portion 63 moves in the drive body 30 in the axial direction (see FIGS. 1 and 2).

A plurality of ribs 63b slidably engaged with the groove 35 of the drive body 30 (see FIGS. 6 (c) and 10) are formed on the outer periphery of the flange portion 63. As described above, when the rib 63b engages with the groove 35 of the drive body 30, the relative rotation between the push rod 60 and the drive body 30 becomes impossible. Therefore, when the user picks and rotates the grip portion 32 of the drive body 30, the push rod 60 rotates in synchronization with the drive body 30.

At the tip of the push rod 60, a fitting portion 67 connected to a bend piece 77 (see FIG. 5) of the support member 70 of the cartridge 2 is provided. In the present embodiment, the connecting portion 99 is configured by the bend piece 77 provided at the base end of the support member 70 and the fitting portion 67 provided at the tip of the push rod 60 (see FIGS. 1 and 2). ..

The fitting portion 67 has a cylindrical portion 67b having a cylindrical shape and a head portion 67a having a truncated cone shape. The diameter of the cylindrical portion 67b is smaller than the diameter of the rod shaft 61 and smaller than the diameter of the bottom surface of the head portion 67a. Since the diameter of the bottom surface of the head portion 67a is larger than the diameter of the columnar portion 67b, the bottom surface of the head portion 67a is defined as the step portion 67c. The method of connecting and disconnecting the tip of the push rod 60 and the base end of the support member 70 will be described later.

As shown in FIG. 6, the coil spring 7 is arranged between the flange portion 63 of the push rod 60 and the cushion member 80, and the push rod 60 is inserted inside the coil spring 7. As shown in FIG. 12, the coil spring 7 is an elastic member formed in a spiral shape, and its natural length is the spring mounting surface 63a of the push rod 60 and the spring receiver of the cushion member 80 in the initial state shown in FIG. It is longer than the distance between the recess 83.

When the cartridge 2 is attached to the cartridge holder 1, the distance between the spring mounting surface 63a of the push rod 60 and the spring receiving recess 83 of the cushion member 80 is the longest in the initial state of FIG. 1, and the push rod 60 is forward. It becomes shorter as it is delivered to. That is, as shown in FIGS. 1 and 2, when the cartridge 2 is attached to the cartridge holder 1, the coil spring 7 is in a compressed state, and the flange portion 63 and the cushion member 80 are separated from each other. The push rod 60 and the cushion member 80 are urged. That is, the coil spring 7 is an urging member that urges the push rod 60 to the rear and the cushion member 80 to the front. The natural length (free length) of the elastic body means the length of the elastic body when no load is applied to the elastic body.

As shown in FIG. 13, the cushion member 80 has a cylindrical first cylindrical portion 81 and a cylindrical second cylindrical portion 82 having a diameter smaller than that of the first cylindrical portion 81. The first cylindrical portion 81 has a circular through hole 81h having a diameter substantially the same as the diameter of the coil spring 7, and the rear end portion of the second cylindrical portion 82 is located at the front end portion of the through hole 81h. The second cylindrical portion 82 has a circular through hole 82h having a diameter substantially the same as the outer diameter of the rod shaft 61 of the push rod 60. The through hole 82h of the second cylindrical portion 82 and the through hole 81h of the first cylindrical portion 81 communicate with each other, and the push rod 60 is inserted into the through hole 81h and the through hole 82h.

The second cylindrical portion 82 is coupled to the front end of the first cylindrical portion 81. The first cylindrical portion 81 includes a fitting portion 86 to be fitted into the drive body 30 at the rear portion. The front portion of the first cylindrical portion 81 is housed inside the main body outer cylinder 21 (see FIG. 7) in a state of protruding from the front end opening 39 (see FIG. 10) of the drive body 30.

A spring receiving recess 83 in which one end of the coil spring 7 is arranged is formed between the outer peripheral edge portion of the rear end of the second cylindrical portion 82 and the inner peripheral surface of the front end of the first cylindrical portion 81. When the urging force of the coil spring 7 acts on the spring receiving recess 83, the cushion member 80 is urged in a direction away from the flange portion 63 of the push rod 60 (in the direction of the front end opening 41 of the main body inner cylinder 40).

On the outer periphery of the fitting portion 86, a plurality of ribs 84 extending in the axial direction over the entire axial length of the fitting portion 86, and a protrusion 85 formed so as to project radially outward from the rib 84 are provided. Be done.

The rib 84 slidably engages with the groove 35 of the drive body 30 (see FIG. 10), disabling the relative rotation between the drive body 30 and the cushion member 80. Therefore, when the user picks up and rotates the drive body 30, the cushion member 80 rotates in synchronization with the drive body 30. Since the rib 84 engages with the groove 35 extending in the axial direction, the rib 84 does not restrain the axial movement of the cushion member 80 with respect to the drive body 30.

As shown in FIG. 10, a protrusion 38 is formed on the inner surface of the groove 35 in the vicinity of the front end opening 39 of the drive body 30. When the fitting portion 86 is inserted into the drive body 30, the protrusion 85 of the cushion member 80 gets over the protrusion 38 of the groove 35.

The protrusion 85 is located on the side opposite to the front end opening 39 of the drive body 30 with respect to the protrusion 38 of the drive body 30 in a state where the fitting portion 86 is inserted into the drive body 30. Therefore, when the cushion member 80 moves in the direction of coming off the drive body 30, the protrusion 38 of the drive body 30 locks the protrusion 85 of the cushion member 80 to prevent the cushion member 80 from coming off the drive body 30. ..

As shown in FIG. 8, the main body inner cylinder 40 is formed in a substantially cylindrical shape having a front end opening 41 and a rear end opening 48. The fitting portion 16 (see FIGS. 3 and 4) of the cartridge outer cylinder 10 is inserted into the inside of the main body inner cylinder 40 through the front end opening 41. The female screw member 50 (see FIG. 9) is inserted into the inner cylinder 40 of the main body through the rear end opening 48.

The main body cylinder 40 has a female screw 43 formed in the axial direction from the front end opening 41 on the inner circumference, a guide portion 45 formed in a concave shape on the outer circumference, and a separation guide formed on the inner circumference in the vicinity of the rear end opening 48. It has a portion (second guide portion) 44 and. The main body cylinder 40 has an annular fitting convex portion 42 that fits into the fitting recess 23 (see FIG. 7) of the main body outer cylinder 21 on the outer periphery in the vicinity of the front end opening 41.

The female screw 43 is formed corresponding to the male screw 15 (see FIGS. 3 and 4) of the cartridge outer cylinder 10. The cartridge outer cylinder 10 is fixed to the main body inner cylinder 40 by screwing the female screw 43 and the male screw 15 (see FIGS. 1 and 2).

The guide portion 45 extends in the axial direction from the rear end surface 47 of the inner cylinder 40 of the main body. The guide portion 45 is formed at a position corresponding to the guide wall portion 26 (see FIG. 7) of the main body outer cylinder 21 and engages with the guide wall portion 26. As a result, the relative rotation between the main body outer cylinder 21 and the main body inner cylinder 40 becomes impossible.

The separation guide portions 44 are formed in pairs corresponding to the proximity guide portions 25 (see FIG. 7) of the outer cylinder 21 of the main body. The separation guide portion 44 is formed in parallel with the proximity guide portion 25. The separation guide portion 44 is located closer to the front end opening 22 of the main body outer cylinder 21 than the proximity guide portion 25 with a predetermined gap between it and the proximity guide portion 25. This gap is formed in a size that allows the blade portion 55 (see FIG. 9), which will be described later, of the female screw member 50 to be inserted.

Each separation guide portion 44 has an inclined surface 44a inclined with respect to the axial direction and a side surface 44b extending along the axial direction, and is formed in a convex shape protruding inward in the radial direction.

The inclined surface 44a of the separation guide portion 44 is the front end surface of the blade portion 55 of the female screw member 50 when the cartridge outer cylinder 10 is removed from the main body cylinder 20 and the female screw member 50 moves in the axial direction by the urging force of the coil spring 7. It touches 55a. Since the inclined surface 44a is inclined with respect to the axial direction, the female screw member 50 moves forward in the axial direction due to the urging force of the coil spring 7 and moves in the radial direction so as to be away from the center.

The main body cylinder 40 has a protruding wall portion 46 protruding from the inner peripheral surface of the main body inner cylinder 40, and a stepped portion 49 provided on the inner circumference of the main body inner cylinder 40. The protrusion 46 is formed so as to project inward in the radial direction. Recesses 46a are formed on both sides of the protrusion 46 in the circumferential direction. The step portion 49 is formed by the separation guide portion 44 and is located on the opposite side of the inclined surface 44a.

As shown in FIGS. 6 and 9, the female screw member 50 has a main body 51 arranged so as to cover a part of the outer peripheral surface of the push rod 60 in the circumferential direction, and an insertion portion having a hole 52a into which the push rod 60 is inserted. 52 and. A part of the insertion portion 52 is formed continuously from the main body portion 51 in the axial direction.

As shown in FIG. 6, the cushion member 80 described above is arranged between the female screw member 50 and the coil spring 7 inside the outer cylinder 21 of the main body. The front end surface (front end surface of the second cylindrical portion 82) 89a (see FIG. 13) of the cushion member 80 is in contact with the rear end surface (rear end surface of the insertion portion 52) 50b (see FIG. 9) of the female screw member 50, and the cushion member 80 The spring receiving recess 83 is in contact with the front end of the coil spring 7. Therefore, the coil spring 7 urges the female screw member 50 axially forward via the cushion member 80. The urging force of the coil spring 7 acts on the rear end surface 50b of the female screw member 50 via the cushion member 80, so that the female screw member 50 is separated from the flange portion 63 of the push rod 60 together with the cushion member 80 (inside the main body). It is urged in the direction of the front end opening 41 of the cylinder 40).

As shown in FIG. 1, the front end surface (front end surface of the main body 51) 50a (see FIG. 9) of the female screw member 50 is after the cartridge outer cylinder 10 when the cartridge outer cylinder 10 is attached to the main body cylinder 20. It is in contact with the end surface (rear end surface of the fitting portion 16) 19b (see FIGS. 3 and 4). That is, the female screw member 50 is pressed by the cartridge outer cylinder 10 when the cartridge outer cylinder 10 is attached to the main body cylinder 20, and the cushion member 80 and the cartridge outer cylinder 10 are compressed while the coil spring 7 is compressed via the cushion member 80. Moves backward in the axial direction with.

The coil spring 7 urges the female screw member 50 via the cushion member 80 in the axial direction forward, that is, in the direction of the front end opening 41 of the main body inner cylinder 40 (the direction opposite to the pressing direction by the cartridge outer cylinder 10). Therefore, the female screw member 50 is a cushion member due to the forward urging force of the coil spring 7 when the cartridge outer cylinder 10 is removed from the main body cylinder 20 and the pressure on the female screw member 50 by the cartridge outer cylinder 10 is released. Move forward with 80.

As shown in FIG. 9, the main body 51 has a base 51a whose cross section is formed in an arc shape, and a pair of extending portions 51b extending in parallel with each other from both ends in the circumferential direction of the base 51a. The extending portion 51b is provided with an open end surface 56a and an outer surface 56b.

The outer surface 56b of the extending portion 51b faces the side surface 44b of the separation guide portion 44 of the main body inner cylinder 40 (see FIG. 6B). As a result, the relative rotation between the inner cylinder 40 of the main body and the female screw member 50 becomes impossible.

The tip of the extending portion 51b is inserted into the recess 46a of the main body inner cylinder 40 so that the opening end surface 56a faces the bottom surface of the recess 46a of the main body inner cylinder 40 (see FIG. 6B). The extending portion 51b has a length in which a predetermined gap is formed between the opening end surface 56a and the bottom surface of the recess 46a in a state where the base portion 51a is in contact with the inner peripheral surface of the main body inner cylinder 40 (FIG. 6 (b). )reference). That is, the female screw member 50 can move in the radial direction with respect to the inner cylinder 40 of the main body within the range of the predetermined gap in the state where the push rod 60 is not inserted through the insertion portion 52 (see FIG. 6B). ).

The hole 52a of the insertion portion 52 has a substantially elliptical cross section, and the long axis of the substantially elliptical shape is formed along the outer surface 56b of the extending portion 51b. Therefore, the female screw member 50 can move in the radial direction even when the push rod 60 is inserted through the insertion portion 52.

The female screw member 50 has a protrusion 51d formed so as to project from the outer periphery of each extending portion 51b, a female screw 53 formed to the inner circumference of the base portion 51a, and a blade formed to protrude from the outer periphery of each extending portion 51b. It has a portion 55 and.

The protrusion 51d is formed in the vicinity of the front end surface 50a. In a state where the urging force of the coil spring 7 is not acting on the female screw member 50, the protrusion 51d is placed on the step portion 49 (see FIG. 8) of the main body inner cylinder 40. As a result, it is possible to prevent the female screw member 50 from falling off from the rear end opening 48 side of the main body inner cylinder 40 during the assembly work, and the cartridge holder 1 can be easily assembled.

The female screw 53 is formed on the same lead as the lead of the male screw 61a of the push rod 60. When the inner peripheral surface of the base portion 51a comes into contact with the rod shaft 61 of the push rod 60, the female screw 53 is screwed with the male screw 61a. The push rod 60 and the female screw member 50 rotate relative to each other in a state where the female screw 53 is screwed with the male screw 61a, so that the push rod 60 advances and retreats in the axial direction with respect to the female screw member 50.

In the cartridge holder 1, the main body 51 of the female screw member 50 is formed in a shape that is interrupted in the circumferential direction (a shape that is not continuous in the circumferential direction), so that the main body portion is different from the case where the female screw member is formed in a cylindrical shape. An opening is formed between both ends of the 51 in the circumferential direction. When forming a female screw on a cylindrical female screw member, it is necessary to remove the screw while rotating the mold.

On the other hand, in the present embodiment, since the openings are formed between both ends of the main body 51 in the circumferential direction, the mold for forming the female screw 53 is formed from the opening of the main body 51 when the female screw member 50 is molded. Can be released. That is, in the present embodiment, when forming the female screw 53 on the female screw member 50, it is not necessary to remove the screw while rotating the mold. Therefore, the female screw member 50 can be molded more easily.

In the cartridge holder 1 of the present embodiment, the main body 51 of the female screw member 50 has a shape that is interrupted in the circumferential direction, and the cross section of the hole 52a of the insertion portion 52 has a substantially elliptical shape. The push rod 60 can be inserted into the insertion portion 52 in a state of being separated from the insertion portion 52. That is, the push rod 60 can be inserted into the insertion portion 52 without screwing the male screw 61a and the female screw 53. Therefore, when assembling the female screw member 50 to the rod shaft 61, it is not necessary to rotate the push rod 60 and the female screw member 50 relative to each other. Therefore, regardless of the size of the lead of the male screw 61a, the female screw member 50 can be easily assembled to the rod shaft 61 of the push rod 60 even when the lead of the male screw 61a is small as in the embodiment.

The blade portion 55 is inserted between the proximity guide portion 25 (see FIG. 7) of the main body outer cylinder 21 and the separation guide portion 44 (see FIG. 8) of the main body inner cylinder 40. That is, in the state where the cartridge holder 1 is assembled, the blade portion 55 has a front end surface 55a facing the inclined surface 44a of the separation guide portion 44 and a rear end surface 55b facing the inclined surface 25a of the proximity guide portion 25. Is provided.

When the cartridge outer cylinder 10 is attached to the main body cylinder 20, the female screw member 50 is pushed by the cartridge outer cylinder 10 and compresses and contracts the coil spring 7 via the cushion member 80 to move backward together with the cushion member 80. Moving. At this time, the rear end surface 55b of the blade portion 55 is slidably in contact with the inclined surface 25a of the proximity guide portion 25 of the main body outer cylinder 21.

As shown in FIG. 7, in the inclined surface 25a of the proximity guide portion 25, the end portion 25b on the female screw 53 side of the female screw member 50 with respect to the push rod 60 is opposite to the female screw 53 in the state where the cartridge holder 1 is assembled. It is inclined so as to be located on the front end opening 22 side of the side end portion 25c. Therefore, when the cartridge outer cylinder 10 is attached to the main body cylinder 20, the female screw member 50 is pressed by the cartridge outer cylinder 10 and moves backward in the axial direction, and is guided in a direction in which the female screw 53 is brought closer to the male screw 61a. To. As described above, in the proximity guide portion 25, when the cartridge outer cylinder 10 is attached to the main body cylinder 20 and the female screw member 50 is pressed by the cartridge outer cylinder 10, the female screw member 50 is screwed in the direction in which the female screw 53 and the male screw 61a are screwed. To guide you.

When the female screw member 50 moves in the direction in which the female screw 53 and the male screw 61a are screwed together, the inner peripheral surface of the base portion 51a of the female screw member 50 comes into contact with the rod shaft 61 of the push rod 60, and the female screw 53 is screwed with the male screw 61a. (See FIG. 1). That is, the female screw 53 is screwed with the male screw 61a of the rod shaft 61 by pressing the female screw member 50 by the cartridge outer cylinder 10 when the cartridge outer cylinder 10 is attached to the main body inner cylinder 40.

As shown in FIG. 8, the protruding wall portion 46 of the main body inner cylinder 40 is provided in a region facing the female screw 53. The protruding wall portion 46 comes into contact with the rod shaft 61 on the side opposite to the female screw 53 when the cartridge outer cylinder 10 is attached to the main body cylinder 20 and the female screw member 50 is guided by the proximity guide portion 25 (see FIG. 1). Therefore, the protruding wall portion 46 limits the movement of the push rod 60 in the direction in which the female screw 53 of the female screw member 50 and the male screw 61a of the push rod 60 are unscrewed (hereinafter, also referred to as “screw release direction”). .. That is, the protruding wall portion 46 restricts the push rod 60 from moving in the direction away from the female screw 53.

Since the movement of the push rod 60 in the screwing release direction is restricted by the protruding wall portion 46, the rod shaft 61 is difficult to separate from the main body portion 51 of the female screw member 50, and the screw between the male screw 61a and the female screw 53 is not easily weakened. Therefore, the push rod 60 can move forward and backward more reliably with the relative rotation between the main body cylinder 20 and the drive body 30, and the cosmetic 4 can be more reliably drawn out and backed out from the cartridge outer cylinder 10.

The protruding wall portion 46 does not need to be formed so as to always be in contact with the rod shaft 61 when the cartridge outer cylinder 10 is attached to the main body cylinder 20, and the female screw 53 and the male screw 61a are completely screwed together. In this state, a gap may be formed between the protruding wall portion 46 and the rod shaft 61. This gap is formed to such a size that the screw between the female screw 53 and the male screw 61a is not released even if the rod shaft 61 moves in the screw release direction.

Since the protrusion 46 is provided in the region facing the female screw 53, the rod shaft 61 hardly separates from the main body 51 of the female screw member 50 even if the push rod 60 is tilted with respect to the rotation center axis. Therefore, it is possible to prevent the male screw 61a and the female screw 53 from being unscrewed only by the protruding wall portion 46 of the main body inner cylinder 40.

Since the cartridge holder 1 has a protruding wall portion 46 in which the inner cylinder 40 of the main body of the main body cylinder 20 restricts the movement of the push rod 60 in the screw release direction, the female screw 53 of the female screw member 50 and the male screw 61a of the push rod 60 are screwed. A plurality of female screw members 50 are not required for fitting. Since the coil spring 7 urges one female screw member 50, the female screw member has a larger urging force than usual as in the case where a plurality of female screw members are used (for example, the technique described in Japanese Patent Application Laid-Open No. 2014-161637). It does not work. Therefore, even if the top of the thread of the female screw 53 of the female screw member 50 comes into contact with the top of the thread of the male screw 61a of the push rod 60, it does not become difficult to insert the cartridge outer cylinder 10 into the main body cylinder 20.

Therefore, the cartridge outer cylinder 10 can be inserted to a predetermined position of the main body cylinder 20, and the movement of the push rod 60 in the screwing release direction can be restricted by the protruding wall portion 46. As a result, the push rod 60 can move forward and backward more reliably with the relative rotation of the main body cylinder 20 and the drive body 30, and the cosmetic 4 can be more reliably drawn out and backed out from the cartridge outer cylinder 10.

If the cartridge type cosmetic container includes a plurality of female screw members, one female screw member may be displaced from the other female screw member, and the female screw members may partially abut against each other. In such a case, since a larger force than usual acts on the contact portion, it is difficult to return the plurality of female screw members to the correct positions at the same time by the urging force of the coil spring.

Since the cartridge holder 1 according to the present embodiment includes one female screw member 50, a larger force than usual does not act on the female screw member 50. Therefore, even if the female screw member 50 is tilted with respect to the axial direction, the female screw member 50 can be returned to the correct position by the urging force of the coil spring 7. Therefore, the cartridge outer cylinder 10 can be inserted to a predetermined position of the main body cylinder 20, and the movement of the push rod 60 in the screwing release direction can be restricted by the protruding wall portion 46.

When the cartridge outer cylinder 10 is removed from the main body cylinder 20, the female screw member 50 moves axially forward together with the cushion member 80 by the urging force of the coil spring 7. At this time, the front end surface 55a (see FIG. 9) of the blade portion 55 slidably contacts the inclined surface 44a (see FIG. 8) of the separation guide portion 44 of the main body inner cylinder 40.

As shown in FIG. 8, in the inclined surface 44a of the separation guide portion 44, the end portion 44c of the female screw member 50 on the female screw 53 side is opposite to the female screw 53 with respect to the push rod 60 in the state where the cartridge holder 1 is assembled. It is inclined so as to be located on the front end opening 41 side with respect to the side end portion 44d. Therefore, when the cartridge outer cylinder 10 is removed from the main body cylinder 20, the female screw member 50 is urged by the coil spring 7 via the cushion member 80 to move forward in the axial direction, and the female screw 53 is moved forward from the male screw 61a. It is guided in the direction of separation. In this way, the separation guide portion 44 guides the female screw member 50 in the direction in which the screw between the female screw 53 and the male screw 61a is released when the pressure on the female screw member 50 by the cartridge outer cylinder 10 is released.

When the female screw 53 is separated from the male screw 61a and the screw between the female screw 53 and the male screw 61a is released, the push rod 60 receives a force regardless of the relative rotation between the push rod 60 and the female screw member 50, so that the female screw member It becomes movable in the axial direction with respect to 50. Therefore, by removing the cartridge outer cylinder 10 from the main body cylinder 20, the push rod 60 can be easily moved to the initial position (see FIG. 6).

The coil spring 7 urges the push rod 60 in the direction in which the flange portion 63 is separated from the female screw member 50, that is, in the rearward in the axial direction. Therefore, for example, when the cosmetic 4 is used up (see FIG. 2) and the cartridge outer cylinder 10 is removed from the main body cylinder 20, the screwing between the female screw 53 and the male screw 61a is released, and the push rod 60 has the urging force of the coil spring 7. Moves backward in the axial direction. Therefore, the push rod 60 can be moved more reliably to the initial position (see FIG. 6).

The procedure for assembling the cartridge holder 1 will be described with reference to FIGS. 6 to 13.

First, the front end surface 50a of the female screw member 50 is passed through the rear end opening 48 of the main body inner cylinder 40, and the female screw member 50 is inserted inside the main body inner cylinder 40. At this time, the recess 46a and the extending portion 51b of the female screw member 50 are engaged with each other so that the bottom surface of the concave portion 46a of the main body inner cylinder 40 and the open end surface 56a of the female screw member 50 face each other (see FIG. 6B). ..

When the female screw member 50 is further inserted into the inner cylinder 40 of the main body, the protrusion 51d of the female screw member 50 gets over the step portion 49 of the inner cylinder 40 of the main body. By inserting the female screw member 50 into the main body inner cylinder 40 until the protrusion 51d gets over the step portion 49, it is possible to prevent the female screw member 50 from falling off from the rear end opening 48 of the main body inner cylinder 40.

Next, the rear end surface 47 of the main body inner cylinder 40 to which the female screw member 50 is assembled is passed through the front end opening 22 of the main body outer cylinder 21, and the main body inner cylinder 40 and the female screw member 50 are inserted inside the main body outer cylinder 21. At this time, the positions of the guide portion 45 of the main body inner cylinder 40 and the guide wall portion 26 of the main body outer cylinder 21 are aligned. When the main body cylinder 40 is further inserted inside the main body outer cylinder 21, the fitting recess 23 of the main body outer cylinder 21 and the fitting convex portion 42 of the main body inner cylinder 40 are fitted, and the main body inner cylinder 40 becomes the main body outer cylinder. It is assembled to 21.

By inserting the main body cylinder 40 into the main body outer cylinder 21, the blade portion 55 of the female screw member 50 is arranged between the proximity guide portion 25 of the main body outer cylinder 21 and the separation guide portion 44 of the main body inner cylinder 40. .. As described above, since the main body cylinder 20 has the main body outer cylinder 21 and the main body inner cylinder 40 housed in the main body outer cylinder 21 and rotating in synchronization with the main body outer cylinder 21, the blade portion 55 of the female screw member 50 is provided. It can be easily arranged between the proximity guide portion 25 of the main body outer cylinder 21 and the separation guide portion 44 of the main body inner cylinder 40.

Next, the push rod 60 is inserted inside the coil spring 7 from the top surface 62 side of the push rod 60, and the coil spring 7 is placed on the spring mounting surface 63a of the push rod 60. After that, the push rod 60 is inserted inside the drive body 30. At this time, the rib 63b of the flange portion 63 and the groove 35 of the drive body 30 are engaged with each other (see FIG. 6C).

Next, the top surface 62 of the push rod 60 is passed through the rear end opening 81b and the front end opening 81a of the cushion member 80 in this order, and the push rod 60 is inserted into the cushion member 80. With the push rod 60 inserted in the cushion member 80, the rear end surface 89b of the cushion member 80 is passed through the front end opening 39 of the drive body 30, and the fitting portion 86 of the cushion member 80 is inserted into the opening 30 a of the drive body 30.

When the cushion member 80 is inserted into the drive body 30 until the protrusion 85 of the cushion member 80 gets over the protrusion 38 of the drive body 30, the cushion member 80 becomes the drive body 30 due to the locking between the protrusion 85 and the protrusion 38. It becomes difficult to get out of. As a result, the coil spring 7 is sandwiched between the spring mounting surface 63a of the push rod 60 and the spring receiving recess 83 of the cushion member 80, and the coil spring 7 can be prevented from popping out from the drive body 30.

The O-ring 6 is attached to the O-ring groove 33 of the drive body 30. The O-ring 6 may be attached to the O-ring groove 33 before the push rod 60 is inserted inside the drive body 30, or may be attached to the O-ring groove 33 after the push rod 60 is inserted inside the drive body 30. May be good.

Next, the fitting portion 31 of the drive body 30 is inserted into the inside of the main body outer cylinder 21 through the top surface 62 of the push rod 60, the cushion member 80, and the tip of the drive body 30 from the rear end opening 29 of the main body outer cylinder 21. As shown in FIG. 6, the drive body 30 is assembled to the main body outer cylinder 21 by fitting the fitting convex portion 34 of the drive body 30 and the fitting concave portion 28 of the main body outer cylinder 21.

At this time, since the cartridge 2 is not attached to the cartridge holder 1, the female screw member 50 is separated from the proximity guide portion 25 of the main body outer cylinder 21 and the main body inner cylinder 40 is separated by the urging force of the coil spring 7. It touches the guide portion 44. In the female screw member 50, the female screw 53 is guided in a direction away from the male screw 61a by the separation guide portion 44, and the female screw 53 and the male screw 61a are not screwed together. Therefore, the push rod 60 moves in the axial direction with respect to the female screw member 50 by receiving a force regardless of the relative rotation between the push rod 60 and the female screw member 50.

The push rod 60 is urged rearward in the axial direction (return direction) by the coil spring 7. Therefore, the push rod 60 is housed inside the main body cylinder 20 and the drive body 30 in a state where the rear end surface 63c of the push rod 60 is in contact with the inner surface of the bottom portion 37 of the drive body 30.

By the above procedure, the cartridge holder 1 is completed.

The procedure for attaching the cartridge 2 to the cartridge holder 1 will be described with reference to FIGS. 1, 3 and 6.

First, the rear end surface 19b of the cartridge outer cylinder 10 is passed through the front end opening 41 of the main body inner cylinder 40 of the cartridge holder 1, and the fitting portion 16 of the cartridge outer cylinder 10 is inserted inside the main body inner cylinder 40. When the fitting portion 16 is inserted inside the main body inner cylinder 40 while the male screw 15 of the cartridge outer cylinder 10 is screwed into the female screw 43 of the main body inner cylinder 40, the rear end surface 19b of the cartridge outer cylinder 10 becomes the front end surface 50a of the female screw member 50. Is pressed, and the rear end surface 50b of the female screw member 50 presses the front end surface 89a of the cushion member 80.

The cushion member 80 moves in the axial direction while compressing and contracting the coil spring 7. As a result, the female screw member 50 moves in the axial direction.

Due to the movement of the female screw member 50, the front end surface 55a of the blade portion 55 of the female screw member 50 is separated from the inclined surface 44a of the separation guide portion 44 of the main body inner cylinder 40, and the rear end surface 55b of the blade portion 55 is the main body outer cylinder 21. It is in contact with the inclined surface 25a of the proximity guide portion 25. In the proximity guide portion 25, the female thread 53 of the female thread member 50 guides the female thread member 50 in a direction close to the male thread 61a, so that the female thread member 50 retracts, so that the female thread 53 and the male thread 61a are screwed together.

Since the protrusion 46 limits the movement of the push rod 60 in the screwing release direction, the female screw member 50 is pushed close to the push rod 60 by the proximity guide portion 25 of the outer cylinder 21 of the main body, and the push rod 60 is pushed by the female screw member 50. However, the push rod 60 does not move. Therefore, the screw between the male screw 61a and the female screw 53 is not easily weakened.

As described above, the attachment of the cartridge 2 to the cartridge holder 1 is completed, and the cartridge type cosmetic container 100 is completed (see FIG. 1).

Mainly, a method of using the cartridge type cosmetic container 100 will be described with reference to FIGS. 1 and 2. FIG. 1 shows a state before the start of use of the cartridge holder 1 and shows a state of the cartridge type cosmetic container 100 in which the push rod 60 is located at the retracting limit. FIG. 2 shows the state of the cartridge type cosmetic container 100 in which the push rod 60 is located at the forward limit.

As shown in FIG. 1, in the state where the push rod 60 is located at the retracting limit, the connecting portion 99 between the tip of the push rod 60 and the base end of the support member 70 is arranged at the initial connection portion. The initial connection portion is a portion where the connection between the tip of the push rod 60 (fitting portion 67 in the present embodiment) and the base end of the support member 70 (bend piece 77 in the present embodiment) can be released.

When the connecting portion 99 is located at the initial connecting portion (disconnectable portion), the tip of the bend piece 77 is arranged in the base end hole 17c in the through hole 17, and the bend piece 77 is in an open state. , The fitting portion 67 of the push rod 60 and the bend piece 77 of the support member 70 are not connected. As shown in FIG. 1, the position of the push rod 60 when the flange portion 63 of the push rod 60 abuts on the bottom portion 37 of the drive body 30 and the retreat of the push rod 60 is restricted is defined as the retreat limit of the push rod 60.

When the user rotates the drive body 30 in one direction (forward rotation) with respect to the main body cylinder 20, the push rod 60 rotates in one direction with respect to the female screw member 50 together with the drive body 30. Since the female screw 53 and the male screw 61a are screwed together, when the push rod 60 rotates in one direction with respect to the female screw member 50, the push rod 60 advances with respect to the main body cylinder 20.

When the push rod 60 advances, the contact surface 76 of the support member 70 of the cartridge 2 is pushed by the top surface 62 of the push rod 60, and the support member 70 advances together with the push rod 60 in the through hole 17 of the cartridge outer cylinder 10. The cosmetic 4 contained in the cartridge outer cylinder 10 is extruded from the front end opening 11a. Since the rib 75a of the support member 70 is fitted in the groove portion of the uneven portion 18 of the through hole 17, the support member 70 advances with respect to the cartridge outer cylinder 10 without rotating. That is, the push rod 60 pushes the support member 70 forward while rotating with respect to the support member 70.

As shown in FIG. 2, when the push rod 60 is advanced by the feeding mechanism 8, the support member 70 is pushed by the push rod 60, and the bend piece 77 is inserted into the sliding hole 17b of the through hole 17, the bend piece 77 is inserted. Bends when it comes into contact with the inner peripheral surface of the sliding hole 17b, resulting in a closed state. That is, the pressing force inward from the inner peripheral surface of the sliding hole 17b acts on the tip end side of the bend piece 77, so that the bend piece 77 is elastically deformed with the base end side as a fulcrum and becomes a closed state.

As a result, the bend piece 77 provided at the base end of the support member 70 and the fitting portion 67 provided at the tip of the push rod 60 are connected in the sliding hole 17b. In the closed state, the plurality of bend pieces 77 are elastically deformed until the protrusion 77b provided on the inner peripheral surface of the bend piece 77 comes into contact with the outer peripheral surface of the fitting portion 67, and sandwiches the fitting portion 67. The fitting portion 67 is fitted in the recess 77p formed by the plurality of bend pieces 77 and the contact surface 76.

The bend piece 77, which is an opening / closing portion, is elastically deformed by coming into contact with the inner peripheral surface of the through hole 17, and is in a closed state. The connected state is called the unconnected state. The connecting portion 99 is arranged in the sliding hole 17b, and the bend piece 77 is closed and fitted to the fitting portion 67, so that the connection cannot be released. When the connecting portion 99 is arranged in the sliding hole 17b, the bend piece 77 is restrained by the inner peripheral surface of the sliding hole 17b, so that the closed state of the bend piece 77 is maintained.

In the unconnected state, the support member 70 moves back and forth in the through hole 17 of the cartridge outer cylinder 10 as the push rod 60 advances and retreats. Therefore, the connecting portion 99 between the base end of the support member 70 and the tip of the push rod 60 moves back and forth with the stroke of the push rod 60 in a state where the sliding hole 17b cannot be disconnected.

In the unconnected state, when the user rotates the drive body 30 to the other side (reverse rotation) with respect to the main body cylinder 20, the push rod 60 rotates to the other side with respect to the female screw member 50 together with the drive body 30. When the push rod 60 rotates to the other side with respect to the female screw member 50, the push rod 60 retracts with respect to the main body cylinder 20. When the push rod 60 retracts, the protrusion 77b of the bend piece 77 is pulled by the step portion 67c of the fitting portion 67 of the push rod 60, the support member 70 retracts in the through hole 17 of the cartridge outer cylinder 10, and the outside of the cartridge. The cosmetic 4 protruding outward from the cylinder 10 is returned into the through hole 17.

When the use is continued and the drive body 30 is rotated in the forward direction to advance the push rod 60, the flange portion 63 of the push rod 60 comes into contact with the rear end surface 89b of the cushion member 80, and the forward movement of the push rod 60 is restricted. As shown in FIG. 2, the position of the push rod 60 when the advance of the push rod 60 is restricted is defined as the forward limit of the push rod 60.

As described above, the axial length LR1 of the rod shaft portion 175 is set to a length equal to or greater than the stroke SP1 from the retreat limit to the forward limit of the support member 70. Therefore, as shown in FIG. 2, when the push rod 60 is located at the forward limit, the connecting portion 99 between the tip of the push rod 60 and the base end of the support member 70 is arranged in the sliding hole 17b. Become. Since the tip (free end) of the bend piece 77 is arranged in the sliding hole 17b and is constrained by the inner peripheral surface of the sliding hole 17b, when the push rod 60 is located at the forward limit, the connecting portion 99 The connection cannot be released. In the state where the push rod 60 is located in the forward limit, the support member 70 is also in the forward limit. When the push rod 60 and the support member 70 are located at the forward limit, the cosmetic 4 cannot be delivered, so that the user can recognize that the cartridge 2 has reached the usage limit state.

The procedure for removing the used cartridge 2 from the cartridge holder 1 will be described.

The user rotates the drive body 30 in the reverse direction with respect to the main body cylinder 20 in advance, and retracts the push rod 60 to the retreat limit. Since the push rod 60 and the support member 70 are connected to each other, the support member 70 also moves rearward in the axial direction together with the push rod 60.

When the user rotates the drive body 30 in the reverse direction with respect to the main body cylinder 20, the push rod 60 moves rearward in the axial direction, so that the connecting portion 99 escapes rearward from the sliding hole 17b and is initially connected (connected). It moves into the base end hole 17c constituting the releaseable part). When the tip (free end) of the bend piece 77 is located in the proximal cavity portion 17i, the bend piece 77 is released from the restraint by the inner peripheral surface of the sliding hole 17b and is opened by its elastic force. As a result, the connection between the base end of the support member 70 (bend piece 77 in this embodiment) and the tip of the push rod 60 (fitting portion 67 in this embodiment) can be released.

In the present embodiment, when the push rod 60 is located at the retracting limit, the protrusion 77b of the bend piece 77 of the support member 70 is arranged outside the step portion 67c of the fitting portion 67 of the push rod 60. , The bend piece 77 is open to the outside. Therefore, in the state where the push rod 60 is located in the retracting limit, the fitting portion 67 and the bend piece 77 are in a state of being relatively movable in the axial direction without contacting each other.

In this state, when the user relatively rotates the cartridge outer cylinder 10 and the main body cylinder 20 so as to release the screwing between the male screw 15 of the cartridge outer cylinder 10 and the female screw 43 of the main body inner cylinder 40, the cartridge is removed. The cylinder 10 can be separated from the main body cylinder 20. As the cartridge outer cylinder 10 and the main body cylinder 20 are relatively rotated, the female screw member 50 moves axially forward together with the cartridge 2 due to the urging force of the coil spring 7.

When the female screw member 50 moves forward in the axial direction due to the urging force of the coil spring 7, the rear end surface 55b of the blade portion 55 of the female screw member 50 separates from the inclined surface 25a of the proximity guide portion 25 of the main body outer cylinder 21, and the female screw member 50. The front end surface 55a of the blade portion 55 of the main body comes into contact with the inclined surface 44a of the separation guide portion 44 of the main body inner cylinder 40. The separation guide portion 44 guides the female thread member 50 in the direction in which the female thread 53 of the female thread member 50 is separated from the male thread 61a. Therefore, when the female thread member 50 advances, the screwing between the female thread 53 and the male thread 61a is released. ..

This completes the removal of the used cartridge 2 from the cartridge holder 1. Since the procedure for removing the used cartridge 2 from the cartridge holder 1 is the same as the procedure for removing the used cartridge 2, the description thereof will be omitted.

In the above description, the drive body 30 is rotated in the reverse direction with respect to the main body cylinder 20 to retract the push rod 60 to the retracting limit, and then the male screw 15 of the cartridge outer cylinder 10 and the female screw 43 of the main body inner cylinder 40 are screwed together. The example in which the cartridge 2 is removed from the cartridge holder 1 has been described. However, as a method different from the above method, while the connecting portion 99 cannot be released, the male screw 15 of the cartridge outer cylinder 10 and the female screw 43 of the main body inner cylinder 40 are released from the screw, and the cartridge 2 is inserted into the cartridge holder. It may be removed from 1.

As shown in FIG. 2, when the push rod 60 is located at the forward limit and the cartridge 2 has reached the usage limit state, the connection portion 99 between the base end of the support member 70 and the tip end of the push rod 60 cannot be disconnected. It is said that. When the user relatively rotates the cartridge outer cylinder 10 and the main body cylinder 20, the female screw member 50 moves axially forward together with the cartridge 2 due to the urging force of the coil spring 7, and the female screw 53 and the male screw 61a are screwed together. Is released.

When the female screw 53 and the male screw 61a are unscrewed, the push rod 60 can move in the axial direction with respect to the female screw member 50 by receiving a force regardless of the relative rotation between the push rod 60 and the female screw member 50. Will be. After the female screw 53 and the male screw 61a are unscrewed, the user separates the cartridge outer cylinder 10 from the main body cylinder 20 so that the distance between the cartridge outer cylinder 10 and the main body cylinder 20 becomes large. The user moves the cartridge outer cylinder 10 forward with respect to the main body cylinder 20, for example. At this time, since the support member 70 is connected to the push rod 60, even if the cartridge outer cylinder 10 is moved forward so as to be separated from the main body cylinder 20, the support member 70 is moved by the push rod 60 located at the forward limit. The support member 70 does not move forward because it is regulated. Further, when the cartridge outer cylinder 10 moves forward and the bottom portion 74 of the support cylinder 72 abuts on the step portion 17d, that is, when the support member 70 is located at the retracting limit, the connecting portion 99 is placed in the base end hole 17c of the through hole 17. To position.

When the connecting portion 99 is arranged in the base end hole 17c, the restraint on the bend piece 77 from the inner peripheral surface of the through hole 17 is released, the bend piece 77 is opened by its elastic force, and the bend piece 77 and the push rod are opened. The connection with the fitting portion 67 of 60 can be released. Therefore, the user unscrews the male screw 15 of the cartridge 2 and the female screw 43 of the cartridge holder 1 with respect to the cartridge type cosmetic container 100 in the usage limit state shown in FIG. 2, and the cartridge 2 is put into the cartridge holder. By performing a series of operations of pulling away from 1, the used cartridge 2 can be removed from the cartridge holder 1. The cartridge 2 in use can also be removed from the cartridge holder 1.

When the connection between the push rod 60 and the support member 70 by the connecting portion 99 is released and the cartridge 2 is removed from the cartridge holder 1, the push rod 60 moves backward in the axial direction due to the urging force of the coil spring 7, and is shown in FIG. It automatically returns to the indicated initial position.

In the process of removing the cartridge 2 from the cartridge holder 1, the bottom portion 74 of the support cylinder 72 abuts on the stepped portion 17d, and the stepped portion 17d restricts the rearward movement of the support member 70, so that the support member 70 is a cartridge. It is surely prevented from falling off from the rear end opening 11b of the outer cylinder 10.

According to the above first embodiment, the following effects are obtained.

(1) When the cartridge 2 of the present embodiment is used by being attached to the cartridge holder 1 having a built-in push rod 60, the feeding mechanism 8 works, and the stored cosmetics 4 advance and retreat in conjunction with the advance and retreat of the push rod 60. It is a cartridge. The cartridge outer cylinder 10 has a through hole 17 that communicates the front end opening 11a on the distal end side and the rear end opening 11b on the proximal end side. The support member 70 is housed in the cartridge outer cylinder 10 so as to be movable in the axial direction.

The support member 70 has a rod shaft portion 175 whose base end is connected to the tip of the push rod 60, and a support cylinder (support portion) 72 provided at the tip of the rod shaft portion 175 to support the cosmetics 4. The outer diameter of the rod shaft portion 175 is smaller than the outer diameter of the support cylinder 72 (DT> DRf> DRr), and the axial length LR1 of the rod shaft portion 175 is from the retreat limit to the forward limit of the support member 70. The length of the stroke is set to SP1 or more (LR1 ≧ SP1).

The through hole 17 is provided on the tip end side of the cartridge outer cylinder 10 and is provided in communication with the tip accommodating hole 17a for accommodating the cosmetics 4 and the tip accommodating hole 17a on the base end side of the cartridge outer cylinder 10, and is a push rod. A sliding hole 17b in which the connecting portion 99 between the tip of the 60 and the base end of the support member 70 slides in a state where the connection cannot be released, and a sliding hole 17b on the base end side of the cartridge outer cylinder 10 with respect to the sliding hole 17b. It has a base end hole 17c which is provided so as to communicate with the connection portion 99 and enables the connection between the tip end of the push rod 60 and the base end of the support member 70 by the connecting portion 99. The inner diameter of the sliding hole 17b is smaller than the inner diameter of the tip accommodating hole 17a (DS <DL1), and the inner diameter of the base end hole 17c is larger than the inner diameter of the sliding hole 17b (DL2> DS). The inner diameter of the sliding hole 17b is smaller than the outer diameter of the support cylinder 72 (DS <DT).

As described above, in the present embodiment, the inner diameter of the sliding hole 17b is smaller than the outer diameter of the support cylinder 72, the stepped portion 17d is formed in the through hole 17, and the support member 70 is opened at the rear end on the proximal end side. It is prevented from falling off to 11b. When the user removes the used cartridge 2 that has been used during use or to the limit of use from the cartridge holder 1, when the drive body 30 is rotated in the reverse direction with respect to the main body cylinder 20, the support member 70 is axially rearward together with the push rod 60. Move to. As a result, the connection portion 99 can be released from the sliding hole 17b and moved to the initial connection portion (connection disconnectable portion) in the base end hole 17c, whereby the connection by the connection portion 99 can be released.

Further, when the user removes the used cartridge 2 that has been used during use or to the limit of use from the cartridge holder 1, the cartridge outer cylinder 10 is moved to the main body cylinder 20 without rotating the drive body 30 in the reverse direction with respect to the main body cylinder 20. Even when it is removed from the above, the connection by the connection portion 99 can be released by moving the connection portion 99 into the base end hole 17c.

Further, in the process of removing the cartridge 2 from the cartridge holder 1, the support member 70 does not come out from the rear end opening 11b on the proximal end side.

That is, according to the present embodiment, the cartridge 2 in use can be removed from the cartridge holder 1 and replaced with, for example, a cartridge 2 in use of another color without dropping the support member 70. Since the support member 70 is prevented from falling off from the cartridge outer cylinder 10, the cartridge 2 in use is removed from the cartridge holder 1, and then the cartridge 2 in use is attached to the cartridge holder 1 again for use. Can be done.

Further, according to the present embodiment, in the unconnected state, the cartridge outer cylinder 10 is suddenly detached from the main body cylinder 20 due to an erroneous operation by the user, and the support member 70 is pulled backward while being connected to the push rod 60. Even so, the step portion 17d prevents the support member 70 from coming out of the cartridge outer cylinder 10.

(2) The support member 70 has a rib 75a, and the cartridge outer cylinder 10 has an uneven portion 18 that engages with the rib 75a and prevents relative rotation with the support member 70. Here, when the rib 75a is not provided, the rotational force due to the friction of the push rod 60 is transmitted to the support member 70, and the support member 70 and the cosmetic 4 rotate with respect to the cartridge outer cylinder 10. Since the cosmetic 4 moves back and forth while twisting in the cartridge outer cylinder 10, the cosmetic 4 may break. On the other hand, in the present embodiment, the rib 75a and the uneven portion 18 prevent the cosmetic 4 from rotating relative to the cartridge outer cylinder 10, so that the core of the cosmetic 4 can be prevented from breaking.

(3) The connecting portion 99 is composed of a plurality of bend pieces (opening / closing portions) 77 provided at the base end of the support member 70 and which can be opened / closed by elastic deformation, and a fitting portion 67 provided at the tip of the push rod 60. .. When the connecting portion 99 is arranged in the sliding hole 17b, the bend piece 77 is closed and fitted to the fitting portion 67, so that the connection cannot be released. When the connecting portion 99 escapes rearward from the sliding hole 17b and is arranged in the proximal hole 17c constituting the initial connecting portion (disconnectable portion), the bend piece 77 is opened and becomes the push rod 60. The connection with the support member 70 can be released. When the bend piece 77 is located in the base end hole 17c, it is opened by its elastic force and the connection is released. Therefore, the cartridge 2 can be separated from the cartridge holder 1 without requiring a large force. Can be done.

(4) The support member 70 is made of a material different from the front support member (tip side support member) 70F and the front side support member 70F, and is connected to the front side support member 70F. It has 70R and. The front support member 70F has a support cylinder 72 that supports the outer peripheral surface of the cosmetic 4, and the rear support member 70R has a shaft body portion 78 that is embedded in the cosmetic 4. The shaft body portion 78 has a columnar portion 78b projecting from the bottom portion 74 of the support cylinder 72 to the inside of the support cylinder 72, and a head portion 78a provided at the tip of the columnar portion 78b and having a diameter larger than that of the columnar portion 78b. Since the support member 70 is composed of two members, the front support member 70F and the rear support member 70R, each member can be molded of a resin material having different characteristics. This makes it possible to manufacture a high-performance support member 70 that takes advantage of the characteristics of the cartridge-type cosmetic container 100.

Further, since the support member 70 is composed of two members, for example, the front support member 70F is inserted from the front end opening 11a of the cartridge outer cylinder 10 using a jig or the like, and the rear end opening 11b of the cartridge outer cylinder 10 is inserted. The rear support member 70R can be inserted to connect the front support member 70F and the rear support member 70R.

Therefore, when assembling the cartridge 2, it is not necessary to insert the plurality of bend pieces 77 from the front end opening 11a of the cartridge outer cylinder 10 and let them pass through the sliding holes 17b. Therefore, since all of the plurality of bend pieces 77 can be the cartridge 2 having a sufficient opening angle in the base end hole 17c, the user can smoothly fit the cartridge 2 having the plurality of bend pieces 77. It can be attached to the cartridge holder 1 provided with the attachment portion 67.

On the other hand, when the support member 70 is formed by integral molding, it is necessary to insert a plurality of bend pieces 77 from the front end opening 11a of the cartridge outer cylinder 10. In this case, some of the plurality of bend pieces 77 may not be opened at a sufficient opening angle in the proximal hole 17c. If the cartridge 2 is attached to the cartridge holder 1 without noticing the bend piece 77 having an insufficient opening angle, the fitting portion 67 cannot be inserted into the inner circumference of the bend piece 77. Therefore, from the viewpoint of mountability to the cartridge holder 1, in the assembling work of the cartridge 2, the work of opening the bend piece 77 having an insufficient opening angle to the outside occurs, which takes time and effort for the assembling work.

In the present embodiment, it is not necessary to insert the plurality of bend pieces 77 through the front end opening 11a of the cartridge outer cylinder 10 and pass them through the sliding holes 17b, so that the cartridge 2 can be easily assembled. Further, in the assembled cartridge 2, the bend piece 77 is maintained at a sufficient opening angle, so that the user can surely attach the cartridge 2 to the cartridge holder 1.

(5) The support member 70 includes a shaft body portion 78 provided inside the support cylinder 72. The shaft body portion 78 has a columnar portion 78b extending axially forward from the bottom portion 74 of the support cylinder 72, and a head portion 78a provided at the tip of the columnar portion 78b. Since the diameter of the head 78a is larger than the diameter of the columnar portion 78b, it is possible to effectively prevent the cosmetic 4 from coming out of the support cylinder 72 when the cosmetic 4 is carried back.

(6) The bend piece 77, which is an opening / closing portion that can be opened / closed by elastic deformation, is provided at the base end of the support member 70. Therefore, by using the cartridge type cosmetic container 100 for a long period of time, even if the bend piece 77 deteriorates due to repeated elastic deformation, only the cartridge 2 needs to be replaced.

(7) The female screw 53 of the female screw member 50 is a male screw when the cartridge 2 is attached to the main body cylinder 20 and the female screw member 50 is pressed by the end portion of the cartridge 2 and retracts against the urging force of the coil spring 7. Screw with 61a. On the other hand, when the cartridge 2 is removed from the main body cylinder 20, the female screw member 50 advances by the urging force of the coil spring 7, so that the female screw 53 of the female screw member 50 and the male screw 61a of the push rod 60 are released from screwing. Therefore, the cartridge 2 can be easily attached to and detached from the cartridge holder 1 without any special operation for screwing the male screw 61a and the female screw 53 or releasing the screwing.

(8) The protruding wall portion 46 of the main body cylinder 20 has a function as a limiting portion that restricts the movement of the push rod 60 in the direction in which the female screw 53 and the male screw 61a are unscrewed. Therefore, a plurality of female screw members are not required when screwing the female screw 53 of the female screw member 50 and the male screw 61a of the push rod 60.

Since the coil spring 7 urges one female screw member 50, a larger urging force than usual is applied to the female screw member 50 as in the case where a plurality of female screw members are used (for example, the technique described in Japanese Patent Application Laid-Open No. 2014-161637). Does not work. Therefore, even if the top of the thread of the female screw 53 of the female screw member 50 comes into contact with the top of the thread of the male screw 61a of the push rod 60, it does not become difficult to insert the cartridge 2 into the main body cylinder 20.

Therefore, the cartridge 2 can be inserted to a predetermined position of the main body cylinder 20, and the movement of the push rod 60 in the screwing release direction can be restricted by the protruding wall portion 46. As a result, the push rod 60 moves forward and backward more reliably with the relative rotation of the main body cylinder 20 and the drive body 30, and the cosmetic 4 can be more reliably delivered from the cartridge 2.

Further, by using one female screw member 50, the diameter of the cartridge holder 1 can be reduced as compared with the case where a plurality of female screw members are inserted into the main body cylinder.

(Modification 1 of the first embodiment)
In the above embodiment, an example in which the support member 70 is composed of two members has been described, but the present invention is not limited thereto. The support member 70 may be formed by a single member. In this case, when the support member 70 is assembled to the cartridge outer cylinder 10, a plurality of bend pieces 77 are inserted from the front end opening 11a of the cartridge outer cylinder 10 and passed through the sliding hole 17b. When the support member 70 is configured to connect the front side support member 70F and the rear side support member 70R as in the above embodiment, when the cartridge 2 is assembled, a plurality of bend pieces 77 pass through the sliding holes 17b. Since it is not necessary to make the cartridge 2, the cartridge 2 can be easily assembled.

(Modification 2 of the first embodiment)
In the above embodiment, when the bend piece 77 is located in the proximal cavity portion 17i, the protrusion 77b of the bend piece 77 of the support member 70 is arranged outside the step portion 67c of the fitting portion 67 of the push rod 60. As described above, an example in which the bend piece 77 opens outward has been described, but the present invention is not limited thereto. The opening amount may be smaller than that of the above embodiment. For example, when the bend piece 77 is located in the proximal cavity portion 17i, the protrusion 77b of the bend piece 77 of the support member 70 may be arranged inside the step portion 67c of the fitting portion 67 of the push rod 60. .. Since the coil spring 7 urges the push rod 60 downward with a strong force, if the bend piece 77 has high flexibility, the cartridge outer cylinder 10 can be removed from the main body cylinder 20 to connect the support member 70 and the push rod 60. You can break the connection.

(Modification 3 of the first embodiment)
In the above embodiment, an example in which the front support member 70F is formed of polyethylene (PE) and the rear support member 70R is formed of polyacetal has been described, but the present invention is not limited thereto. The front support member 70F and the rear support member 70R can be molded from various materials. Further, the front support member 70F and the rear support member 70R may be molded of the same material.

(Second embodiment)
Hereinafter, the cartridge type cosmetic container 200 according to the second embodiment of the present invention will be described. In the figure, the same or corresponding parts as those of the first embodiment are designated by the same reference numbers, and the differences will be mainly described.

As shown in FIGS. 14 and 15, the cartridge type cosmetic container 200 includes a cartridge holder 201 and a cartridge 202.

The cartridge 202 according to the second embodiment will be described. In the first embodiment, an example in which a liquid cosmetic is poured into the cartridge outer cylinder 10 and solidified has been described. On the other hand, in the second embodiment, a cosmetic core is molded in advance using a cosmetic charge mold (not shown), and the molded solid cosmetic 204 is press-fitted into the support cylinder 72.

In the first embodiment, the support member 70 is composed of two members, a front support member 70F and a rear support member 70R (see FIG. 5). On the other hand, in the second embodiment, as shown in FIG. 17, the support member 270 is a single member and does not have a shaft body portion 78.

Further, in the first embodiment, a plurality of bend pieces 77 are provided at the rear end of the support member 70 at equal intervals in the circumferential direction (see FIG. 5). On the other hand, in the second embodiment, as shown in FIG. 17, a single bend piece 277 is provided at the rear end of the support member 270.

In the first embodiment, the base end hole 17c of the through hole 17 is formed in such a size that the plurality of bend pieces 77 are opened when the plurality of bend pieces 77 are arranged (see FIG. 1). .. On the other hand, in the second embodiment, as shown in FIGS. 14 and 16, the base end hole 217c of the through hole 217 is a single bend piece 277 when a single bend piece 277 is arranged. Is formed to a size that opens.

The support member 270 is a cylinder extending continuously from a cylindrical rod shaft portion 275, a support cylinder 72 provided at the tip (front end) of the rod shaft portion 275, and a base end (rear end) of the rod shaft portion 275. It has a bend piece 277 provided in the portion.

The rod shaft portion 275 refers to a portion between the support cylinder 72 and the bend piece 277. The rod shaft portion 275 extends axially from the support cylinder 72, and its axial length, that is, the axial length from the outer surface of the bottom portion 74 of the support cylinder 72 to the tip surface of the bend piece 277. The LR2 is set to a length equal to or greater than the stroke (movement amount) SP2 from the backward limit (see FIG. 14) to the forward limit (see FIG. 15) of the support member 270.

The support cylinder 72 is formed in a bottomed cylindrical shape concentric with the rod shaft portion 275, and the bottom portion 74 is coupled to the rod shaft portion 275. The bottom portion 74 of the support cylinder 72 is formed with an opening that communicates with the inside of the rod shaft portion 275.

The cosmetics 204 are fixed to the inner peripheral surface of the support cylinder 72, and the state of being supported by the support cylinder 72 is maintained. That is, the cosmetics 204 are held by the support cylinder 72. The rear end surface 257b of the support member 270 is a portion that comes into contact with the tip of the push rod 260. As will be described later, the rear end surface 257b is pushed by the push rod 260, and the support member 270 advances together with the push rod 260, so that the cosmetics 204 supported by the support cylinder 72 is paid out from the front end opening 11a.

The bend piece 277 is an inner portion of the slit 277a formed in a substantially U shape on the side surface near the rear end of the support member 270. The bend piece 277 has a fixed end on the rear end surface 257b side and a free end on the tip. The bend piece 277 is an elastic member that elastically deforms between a closed state that is closed inward in the radial direction (see FIG. 15) and an open state that is open outward in the radial direction (see FIG. 14). The bend piece 277 functions as an opening / closing portion that can be opened / closed by elastic deformation, and is a portion connected to the tip of the push rod 260.

A protrusion 277b that protrudes outward in the radial direction is formed on the outer peripheral surface of the tip of the bend piece 277. When the bend piece 277 is located in the sliding hole 17b, the protrusion 277b comes into contact with the inner peripheral surface of the sliding hole 17b, so that the bend piece 277 is elastically deformed (bent) and closed inward in the radial direction. It becomes a closed state. When the bend piece 277 is located in the base end hole 217c, the protrusion 277b is not in contact with the inner peripheral surface of the through hole 217, and the bend piece 277 is in an open state that is open outward in the radial direction as compared with the closed state. Become. When the bend piece 277 is located in the base end hole 217c, it is sufficient that the bend piece 277 is opened and the connection between the push rod 260 and the support member 270 can be released, so that the bend piece 277 penetrates. It may be in contact with the inner peripheral surface of the hole 217.

In the first embodiment, the rib 75a provided on the outer peripheral surface of the base end portion of the rod shaft portion 175 is fitted into the valley portion of the uneven portion 18 of the through hole 17, so that the circumference of the support member 70 with respect to the cartridge outer cylinder 10 is peripheral. The configuration was such that movement (rotation) in the direction was restricted. On the other hand, in the second embodiment, the cylindrical member constituting the rod shaft portion 275 is provided with a rib 275a extending in the axial direction from the base end thereof to the bottom portion 74 of the support cylinder 72. When the rib 275a engages with the valley portion, that is, the groove portion of the uneven portion 18 of the sliding hole 17b, the support member 270 with respect to the cartridge outer cylinder 210 cannot move in the circumferential direction, that is, relative rotation (FIG. 15 (b)). )reference).

The push rod 260 built in the cartridge holder 201 according to the second embodiment will be described. As shown in FIG. 18, the fitting portion 267 of the push rod 260 is provided at the cylindrical portion 267b, the truncated cone-shaped head 267a provided at the front end of the columnar portion 267b, and the rear end of the columnar portion 267b. It has an annular flange portion 267d and. The diameter of the cylindrical portion 267b is smaller than the diameter of the rod shaft 61 and smaller than the diameter of the head head 267a. Since the diameter of the bottom surface of the head 267a is larger than the diameter of the cylindrical portion 267b, the bottom surface of the head 267a is referred to as the step portion 267c.

The flange portion 267d is provided at the rear end of the columnar portion 267b so as to project radially outward from the columnar portion 267b. A recess 267p into which the bend piece 277 is fitted is formed at the tip of the push rod 260. The outer peripheral surface of the cylindrical portion 267b corresponds to the bottom surface of the concave portion 267p. The front surface of the flange portion 267d facing the step portion 267c and the step portion 267c corresponds to a pair of side surfaces of the recess 267p.

In the first embodiment, when the push rod 60 advances, the top surface 62 of the push rod 60 pushes the contact surface 76 of the support member 70, and the support member 70 advances. On the other hand, in the second embodiment, when the push rod 260 advances, the flange portion 267d of the push rod 260 pushes the rear end surface 257b of the support member 270, and the support member 270 advances.

In the first embodiment, when the push rod 60 is retracted, the step portion 67c of the push rod 60 pulls the protrusion 77b of the bend piece 77, and the support member 70 is retracted. On the other hand, in the second embodiment, when the push rod 260 retracts, the step portion 267c of the push rod 260 pulls the tip portion of the bend piece 277, and the support member 270 retracts.

That is, in the first embodiment and the second embodiment, the portion that pushes the support members 70 and 270 when the push rods 60 and 260 move forward, and the support members 70 and 270 when the push rods 60 and 260 move backward. The arrangement of the parts to be pulled is reversed.

Mainly, a method of using the cartridge type cosmetic container 200 will be described with reference to FIGS. 14 and 15. FIG. 14 is a state before the start of use of the cartridge holder 201, and shows a state of the cartridge type cosmetic container 200 in which the push rod 260 is located at the retracting limit. FIG. 15 shows the state of the cartridge type cosmetic container 200 in which the push rod 260 is located at the forward limit.

As shown in FIG. 14, in the state where the push rod 260 is located in the retracting limit, the connecting portion 299 between the tip of the push rod 260 and the base end of the support member 270 is arranged at the initial connection portion. The initial connection portion is a portion where the connection between the tip of the push rod 260 (fitting portion 267 in the present embodiment) and the base end of the support member 70 (bend piece 277 in the present embodiment) can be released.

When the connecting portion 299 is located at the initial connecting portion (disconnectable portion), the tip (free end) of the bend piece 277 is arranged in the base end hole 217c in the through hole 217 and is in an open state. , The fitting portion 267 of the push rod 260 and the bend piece 277 of the support member 270 are not connected.

When the user rotates the drive body 30 in one direction (forward rotation) with respect to the main body cylinder 20, the push rod 260 rotates in one direction with respect to the female screw member 50 together with the drive body 30. Since the female screw 53 and the male screw 61a are screwed together, when the push rod 260 rotates in one direction with respect to the female screw member 50, the push rod 60 advances with respect to the main body cylinder 20.

As the push rod 260 advances, the rear end surface 257b of the support member 270 of the cartridge 202 is pushed by the flange portion 267d of the push rod 260, and the support member 270 advances together with the push rod 260 in the through hole 217 of the cartridge outer cylinder 210 to advance the cartridge. The cosmetics 204 contained in the outer cylinder 210 are extruded from the front end opening 11a.

As shown in FIG. 15, when the push rod 260 is advanced by the feeding mechanism 8, the support member 270 is pushed by the push rod 260, and the bend piece 277 is inserted into the sliding hole 17b of the through hole 217, the bend piece 277 is inserted. Bends when it comes into contact with the inner peripheral surface of the sliding hole 17b, resulting in a closed state. That is, the pressing force from the inner peripheral surface of the sliding hole 17b toward the inside acts on the tip end side of the bend piece 277, so that the bend piece 277 is elastically deformed with the base end side as a fulcrum and becomes a closed state.

As a result, the bend piece 277 provided at the base end of the support member 270 and the fitting portion 267 provided at the tip end of the push rod 260 are connected in the sliding hole 17b. In the closed state, the bend piece 277 is elastically deformed inward so that the top surface of the tip portion faces the step portion 267c. The bend piece 277 is fitted into the recess 267p formed by the cylindrical portion 267b, the head portion 267a and the flange portion 267d of the fitting portion 267.

The connecting portion 299 is arranged in the sliding hole 17b, and the bend piece 277 is closed and fitted to the fitting portion 267, so that the connection cannot be released.

In the unconnected state, the support member 270 moves back and forth in the through hole 217 of the cartridge outer cylinder 210 as the push rod 260 advances and retreats. Therefore, the connecting portion 299 between the base end of the support member 270 and the tip end of the push rod 260 moves back and forth with the stroke of the push rod 260 in a state where the sliding hole 17b cannot be disconnected.

As described above, the axial length LR2 of the rod shaft portion 275 is set to a length equal to or greater than the stroke SP2 from the retreat limit to the forward limit of the support member 270. Therefore, as shown in FIG. 15, when the push rod 260 is located at the forward limit, the connecting portion 299 between the tip of the push rod 260 and the base end of the support member 270 is arranged in the sliding hole 17b. Become. Since the tip (free end) of the bend piece 277 is arranged in the sliding hole 17b and is restrained by the inner peripheral surface of the sliding hole 17b, when the push rod 260 is located at the forward limit, the connecting portion 299 The connection cannot be released. In the state where the push rod 260 is located in the forward limit, the support member 270 is also in the forward limit. When the push rod 260 and the support member 270 are located at the forward limit, the cosmetics 204 cannot be delivered, so that the user can recognize that the cartridge 202 has reached the usage limit state.

The procedure for removing the used cartridge 202 from the cartridge holder 201 is the same as that in the first embodiment. For example, the user rotates the drive body 30 in the reverse direction with respect to the main body cylinder 20 in advance, and retracts the push rod 260 to the retreat limit as shown in FIG. Since the push rod 260 and the support member 270 are connected to each other, the support member 270 moves backward in the axial direction together with the push rod 260.

When the user rotates the drive body 30 in the reverse direction with respect to the main body cylinder 20, the push rod 260 moves rearward in the axial direction, so that the connecting portion 299 escapes rearward from the sliding hole 17b and is initially connected (connected). It moves into the proximal hole 217c constituting the releaseable portion). When the tip (free end) of the bend piece 277 is located in the base end hole 217c, the bend piece 277 is released from the restraint by the inner peripheral surface of the sliding hole 17b, and is opened by the elastic force of the support member. The connection between the base end of 270 (bend piece 277 in this embodiment) and the tip of the push rod 260 (fitting portion 267 in this embodiment) can be released.

In the present embodiment, when the push rod 260 is positioned at the retracting limit, the protrusion 277b of the bend piece 277 of the support member 270 is arranged outside the step portion 267c of the fitting portion 267 of the push rod 260. , The bend piece 277 is open to the outside. Therefore, in the state where the push rod 260 is located at the retracting limit, the fitting portion 267 and the bend piece 277 are in a state of being relatively movable in the axial direction without contacting each other.

In this state, when the user relatively rotates the cartridge outer cylinder 10 and the main body cylinder 20 so as to release the screwing between the male screw 15 of the cartridge outer cylinder 210 and the female screw 43 of the main body inner cylinder 40, the cartridge 202 Can be removed from the cartridge holder 1.

In the process of removing the cartridge 202 from the cartridge holder 201, the bottom portion 74 of the support cylinder 72 abuts on the stepped portion 17d, and the stepped portion 17d restricts the rearward movement of the support member 270. Therefore, the support member 270 is a cartridge. It is surely prevented from falling off from the rear end opening 11b of the outer cylinder 210.

According to such a second embodiment, the same effects as those of (1) to (3) and (6) to (8) described in the first embodiment are obtained.

(Modification 1 of the second embodiment)
In the second embodiment described above, an example in which the bend piece 277, which is an opening / closing portion, is provided on the base end side of the support member 270 and the fitting portion 267 is provided on the tip end side of the push rod 260 has been described. Not limited to. The bend piece 277, which is an opening / closing portion, may be provided on the tip end side of the push rod 260, and the fitting portion 267 may be provided on the base end side of the support member 270.

(Third embodiment)
Hereinafter, the cartridge type cosmetic container 300 according to the third embodiment of the present invention will be described. In the figure, the same or corresponding parts as those of the second embodiment are designated by the same reference numbers, and the differences will be mainly described.

As shown in FIGS. 19 and 20, the cartridge type cosmetic container 300 includes a cartridge holder 301 and a cartridge 302.

The cartridge 302 according to the third embodiment will be described. In the second embodiment, the proximal hole 217c of the through hole 217 has a tapered hole 217f (see FIG. 16). On the other hand, in the third embodiment, as shown in FIG. 21, the base end hole 317c of the through hole 317 does not have the tapered hole 217f.

As shown in FIG. 21, the tip accommodating hole 317a accommodating the cosmetics 204 is provided with a protrusion 317 m that protrudes inward in the radial direction from the inner peripheral surface thereof. A plurality of protrusions 317m (four in the present embodiment) are provided at equal intervals in the circumferential direction. The protrusion 317m is fitted with the annular recess 372b (see FIG. 22) provided in the support cylinder 372, whereby the support member 370 is axially locked.

In the second embodiment, a bend piece 277, which is an opening / closing portion that can be opened / closed by elastic deformation, is provided at the base end of the support member 270 (see FIG. 17). On the other hand, in the third embodiment, as shown in FIG. 23, a connecting member 390 as an opening / closing portion that can be opened / closed by elastic deformation is provided at the tip of the push rod 360.

In the second embodiment, a fitting portion 267 into which the bend piece 277 is fitted is provided at the tip of the push rod 260 (see FIG. 18). On the other hand, in the third embodiment, as shown in FIG. 22, a fitting portion 377 to which the connecting member 390 is fitted is provided at the base end of the support member 370.

As shown in FIG. 22, the fitting portion 377 is a cylindrical columnar portion 377b projecting outward in the axial direction from the bottom surface 375c of the bottomed cylindrical rod shaft portion 375, and a hemisphere provided at the tip of the columnar portion 377b. It has a shaped head 377a and. The diameter of the cylindrical portion 377b is smaller than the diameter of the rod shaft portion 375 and smaller than the diameter of the head portion 377a.

The rod shaft portion 375 refers to a portion between the support cylinder 372 and the fitting portion 377. The axial length of the rod shaft portion 375, that is, the axial length from the outer surface of the bottom portion 74 of the support cylinder 372 to the bottom surface 375c of the rod shaft portion 375, is the receding limit of the support member 370 (see FIG. 19). The stroke (movement amount) from to the forward limit (see FIG. 20) is set to a length of SP3 or more.

In the third embodiment, the outer peripheral surface of the columnar portion 377b, the bottom surface 377c of the head portion 377a, and the bottom surface 375c of the rod shaft portion 375 form a fitting convex portion 93 (see FIG. 23) of the connecting member 390 described later. It forms a recess 377p to be fitted.

An annular recess 372b recessed inward is provided on the outer peripheral surface of the support cylinder 372. A protrusion 317m provided in the through hole 317 of the cartridge outer cylinder 310 described above is fitted in the annular recess 372b.

The push rod 360 built in the cartridge holder 301 according to the third embodiment will be described. As shown in FIG. 23, a connecting member 390 is attached to the tip of the push rod 360. A mounting portion 367 to which the connecting member 390 is mounted is formed at the tip of the rod shaft 61.

As shown in FIGS. 23 (a) and 23 (c), the mounting portion 367 is composed of three disc portions concentric with the rod shaft 61. The three discs constituting the mounting portion 367 are arranged so as to sandwich the small-diameter disc portion 367b between the medium-diameter disc portion 367a located at the tip (front end) of the push rod 360 and the large-diameter disc portion 367c. Will be done. The diameter of the medium-diameter disk portion 367a is larger than the diameter of the small-diameter disk portion 367b, and the diameter of the large-diameter disk portion 367c is larger than the diameter of the medium-diameter disk portion 367a.

An annular recess 367d is formed in the mounting portion 367 by the outer peripheral side surface of the small diameter disc portion 367b, the rear end surface of the medium diameter disc portion 367a, and the front end surface of the large diameter disc portion 367c.

As shown in FIGS. 23 (b) and 23 (d), the connecting member 390 is a bottomed cylindrical member having a front end surface 92 side as a bottom portion and a base end surface 97 side as an opening portion 98. A circular opening is formed at the bottom of the connecting member 390. The inner peripheral surface of the circular opening constitutes the tip surface of the fitting convex portion 93 protruding inward from the front end of the cylindrical portion of the connecting member 390. An annular recess 94 recessed outward in the radial direction is formed on the inner peripheral surface of the connecting member 390 on the proximal end side.

In the connecting member 390, a slit 95 extending in the axial direction is formed from the tip end surface 92 to the base end surface 97. By forming the slit 95, the connecting member 390 has a C-shaped cross section.

The connecting member 390 is formed of an elastic member that can be opened and closed by elastic deformation. The connecting member 390 is in a closed state when the dimension between the pair of end faces constituting the slit 95 is less than a predetermined distance. As shown in FIG. 23 (b), the connecting member 390 is in a closed state when no external force is applied. The connecting member 390 is opened by elastically deforming so that the pair of end faces constituting the slit 95 are at least a predetermined distance.

In the present embodiment, when the connecting member 390 is fitted to the fitting portion 377, when a pulling force that causes the connecting member 390 and the fitting portion 377 to separate from each other acts, the connecting member 390 elastically deforms. It becomes an open state. When the connecting member 390 is in the open state, the distance between the pair of end faces constituting the slit 95 is larger than in the closed state, so that the connecting member 390 and the fitting portion 377 can be separated. .. That is, when the connecting member 390 is opened, the connection between the base end of the support member 370 and the tip of the push rod 360 can be released.

Further, when the connecting member 390 and the fitting portion 377 are separated, when a pushing force is applied so as to insert the fitting portion 377 from the circular opening of the tip surface 92 of the connecting member 390, the connecting member 390 is applied. Is elastically deformed and becomes an open state. Therefore, the fitting portion 377 can be attached to the connecting member 390 by pushing the fitting portion 377 into the circular opening of the tip surface 92 of the connecting member 390.

The medium-diameter disk portion 367a at the tip of the mounting portion 367 is fitted into the annular recess 94 of the connecting member 390, and the portion between the annular recess 94 of the connecting member 390 and the base end surface 97 is the annular recess of the mounting portion 367. Fits to 367d. As a result, the connecting member 390 is attached to the attachment portion 367.

The connecting member 390 can be easily attached to the attachment portion 367 by elastically deforming the connecting member 390 so as to open the base end side.

Mainly, a method of using the cartridge type cosmetic container 300 will be described with reference to FIGS. 19 and 20. FIG. 19 shows a state before the start of use of the cartridge holder 301, and shows a state of the cartridge type cosmetic container 300 in which the push rod 360 is located at the retracting limit. FIG. 20 shows the state of the cartridge type cosmetic container 300 in which the push rod 360 is located at the forward limit.

In the third embodiment, by attaching the cartridge 302 to the cartridge holder 301, the fitting portion 377 is inserted into the connecting member 390 provided at the tip of the push rod 360. As a result, the fitting convex portion 93 of the connecting member 390 is fitted into the concave portion 377p formed by the cylindrical portion 377b, the head portion 377a, and the rod shaft portion 375 of the fitting portion 377, and the base end of the support member 370 and the push rod are fitted. The tip of 360 is connected. In the state where the support member 370 and the push rod 360 are connected, the connecting member 390 is in the closed state. The connecting member 390 is elastically deformed and opened when the fitting portion 377 is inserted into the circular opening of the tip surface 92 of the connecting member 390.

As shown in FIG. 19, in the state where the push rod 360 is located at the retracting limit, the connecting portion 399 between the tip of the push rod 360 and the base end of the support member 370 is arranged at the initial connection portion. The initial connection portion is a portion where the connection between the tip of the push rod 360 (connecting member 390 in the present embodiment) and the base end of the support member 370 (fitting portion 377 in the present embodiment) can be released.

When the connecting portion 399 is located at the initial connecting portion (disconnectable portion), the connecting member 390 is arranged in the base end hole 317c in the through hole 317. When the user unscrews the male screw 15 of the cartridge 302 and the female screw 43 of the cartridge holder 301 in this state, the fitting portion 377 is pulled out from the connecting member 390, and the connecting member 390 and the fitting portion 377 are connected. Is released. When the fitting portion 377 is pulled out, the connecting member 390 is elastically deformed and becomes an open state.

As shown in FIG. 19, when the user rotates the drive body 30 in one direction (forward rotation) with respect to the main body cylinder 20 in a state where the connection portion 399 is located at the initial connection portion, the drive body 30 is rotated together with the drive body 30. The push rod 360 rotates in one direction with respect to the female screw member 50. Since the female screw 53 and the male screw 61a are screwed together, when the push rod 360 rotates in one direction with respect to the female screw member 50, the push rod 360 advances with respect to the main body cylinder 20.

As the push rod 360 advances, the bottom surface 375c of the rod shaft portion 375 in the support member 370 of the cartridge 302 is pushed by the tip surface 92 of the connecting member 390, and the support member 370 is pushed together with the push rod 360 in the through hole 317 of the cartridge outer cylinder 310. The cosmetic 204 contained in the cartridge outer cylinder 310 is pushed out from the front end opening 11a.

As shown in FIG. 20, when the push rod 360 is advanced by the feeding mechanism 8, the support member 370 is pushed by the push rod 360, and the connecting member 390 is inserted into the sliding hole 17b of the through hole 317, the connecting member 390 is inserted. Is constrained by the inner peripheral surface of the sliding hole 17b so as to be prevented from being opened.

Specifically, when the connecting portion 399 is arranged in the sliding hole 17b, a pushing force acts on the connecting member 390 from the mounting portion 367, or a pulling force acts on the connecting member 390 from the fitting portion 377. Then, the connecting member 390 is elastically deformed so as to open outward. When the connecting member 390 is elastically deformed so as to open outward, a pressing force inward from the inner peripheral surface of the sliding hole 17b acts on the outer peripheral surface of the connecting member 390. Since a binding force acts on the connecting member 390 by the inner peripheral surface of the sliding hole 17b, the connecting member 390 has a dimension between the pair of end faces constituting the slit 95 of the connecting member 390 so as to be less than a predetermined distance. The amount of elastic deformation is suppressed and the closed state is maintained.

As a result, the connecting portion 399 composed of the fitting portion 377 provided at the base end of the support member 370 and the connecting member 390 provided at the tip of the push rod 360 slides in the sliding hole 17b in a state where the connection cannot be released. It will move.

In the present embodiment, the connecting portion 399 is composed of a connecting member (opening / closing portion) 390 provided at the tip of the push rod 360 and capable of opening / closing by elastic deformation, and a fitting portion 377 provided at the base end of the support member 370. .. When the connecting portion 399 is arranged in the sliding hole 17b, the connecting member 390 is restrained by the inner peripheral surface of the sliding hole 17b, so that the closed state of the connecting member 390 is maintained.

In the unconnected state, the support member 370 moves back and forth in the through hole 317 of the cartridge outer cylinder 310 as the push rod 360 advances and retreats. Therefore, the connecting portion 399 between the base end of the support member 370 and the tip end of the push rod 360 moves back and forth with the stroke of the push rod 360 in a state where the sliding hole 17b cannot be disconnected.

As described above, the axial length LR3 of the rod shaft portion 375 is set to a length equal to or longer than the stroke SP3 from the retreat limit to the forward limit of the support member 370. Therefore, as shown in FIG. 20, when the push rod 360 is located at the forward limit, the connecting portion 399 between the tip of the push rod 360 and the base end of the support member 370 is arranged in the sliding hole 17b. Become. Since the connecting member 390 is arranged in the sliding hole 17b and is restrained by the inner peripheral surface of the sliding hole 17b, the connecting portion 399 cannot be disconnected when the push rod 360 is located at the forward limit. .. In the state where the push rod 360 is located in the forward limit, the support member 370 is also in the forward limit. When the push rod 360 and the support member 370 are located at the forward limit, the cosmetics 204 cannot be delivered, so that the user can recognize that the cartridge 302 has reached the usage limit state.

The procedure for removing the used cartridge 302 from the cartridge holder 301 will be described.

As shown in FIG. 20, when the push rod 360 is located at the forward limit and the cartridge 302 reaches the usage limit state, the connection portion 399 between the base end of the support member 370 and the tip end of the push rod 360 cannot be disconnected. It is said that. When the user rotates the cartridge outer cylinder 10 and the main body cylinder 20 relative to each other so as to release the screwing between the male screw 15 of the cartridge outer cylinder 10 and the female screw 43 of the main body inner cylinder 40, the female screw 53 of the female screw member 50 is rotated. And the male screw 61a of the push rod 360 are unscrewed.

When the female screw 53 and the male screw 61a are unscrewed, the push rod 360 moves backward in the axial direction due to the urging force of the coil spring 7, and is positioned at the retracting limit as shown in FIG. Since the push rod 360 and the support member 370 are connected to each other, the support member 370 moves backward in the axial direction together with the push rod 360. Since the support member 370 is restricted from moving backward by the step portion 17d, the push rod 360 and the support member 370 are positioned at the retracting limit when the bottom portion 74 of the support cylinder 372 abuts on the step portion 17d. ..

Since the push rod 360 moves rearward in the axial direction due to the urging force of the coil spring 7, the connecting portion 399 escapes rearward from the sliding hole 17b and is inside the base end hole 317c constituting the initial connecting portion (disconnectable portion). Move to. At this time, the connecting member 390 is not in contact with the inner peripheral surface of the through hole 317 and is not restrained from the outside. Therefore, if the support member 370 is pulled forward together with the cartridge outer cylinder 310, the slit 95 Since the connecting member 390 is elastically deformed so as to open, the fitting portion 377 of the support member 370 can be removed from the connecting member 390.

Therefore, the user rotates the cartridge outer cylinder 310 and the main body cylinder 20 relative to each other to release the screwing between the male screw 15 of the cartridge outer cylinder 310 and the female screw 43 of the main body inner cylinder 40, and the cartridge 302 and the cartridge holder 301. The cartridge 302 can be removed from the cartridge holder 301 by further separating the cartridge 302 from the cartridge holder 301. Since the procedure for removing the used cartridge 302 from the cartridge holder 301 is the same as the procedure for removing the used cartridge 302, the description thereof will be omitted.

According to such a third embodiment, in addition to the same effects as in (1), (2), (7), and (8) described in the first embodiment, the following effects are exhibited.

(9) In the third embodiment, when the cartridge 302 is attached to the cartridge holder 301, the push rod 360 and the support member 370 are connected by the connecting portion 399 in the base end hole 317c. When connecting the push rod 360 to the support member 370, the connecting member 390 provided at the tip of the push rod 360 is pressed against the fitting portion 377 of the support member 370, so that the connecting member 390 is opened and the connecting member 390 and the connecting member 390 are opened. The fitting portion 377 is connected.

However, the cosmetic 204 of the third embodiment is hard because of the molded core, and unlike the soft cosmetic 4 of the first embodiment, the cosmetic 204 adheres to the inner peripheral surface of the tip accommodating hole 317a. Not. Therefore, when the cartridge 302 is attached to the cartridge holder 301 and the push rod 360 and the support member 370 are to be connected, the connecting member 390 is pressed against the fitting portion 377, so that the support member 370 is the cartridge outer cylinder 310. There is a possibility that the push rod 360 and the support member 370 cannot be connected to each other because the push rod 360 moves forward in the axial direction.

Therefore, in the third embodiment, the support cylinder 372 is provided with an annular recess 372b, the through hole 317 is provided with a protrusion 317m, and when the support member 370 is located at the retracting limit, the annular recess 372b and the protrusion 317m are provided. And were made to fit. This prevents the support member 370 from moving axially forward with respect to the cartridge outer cylinder 310 in the process of attaching the cartridge 302 to the cartridge holder 301 in order to connect the push rod 360 and the support member 370. The connecting member 390 and the fitting portion 377 can be reliably connected.

(10) Further, since the connecting member 390 is opened and closed without difficulty by inserting the fitting portion 377, the connecting member 390 is not damaged even if the cartridge type cosmetic container 300 is used for a long period of time. There is no need to replace the connecting member 390.

(Modification 1 of the third embodiment)
In the third embodiment described above, an example in which the connecting member 390 is detachably provided at the tip of the push rod 360 has been described, but the present invention is not limited thereto. The connecting member 390 may be welded to the tip of the push rod 360 or integrally molded so as to be non-detachable.

The following modifications are also within the scope of the present invention, and the configurations shown in the modifications and the configurations described in the above-described embodiments may be combined, or the configurations described in the above-mentioned different embodiments may be combined, and the following differences may occur. It is also possible to combine the configurations described in the modified example.

(Modification 1)
In the above embodiment, an example in which the bend pieces 77, 277 and the connecting member 390 are provided as an opening / closing portion that can be opened / closed by elastic deformation has been described, but the present invention is not limited thereto. For example, in the first embodiment, a plurality of rod-shaped members may be provided instead of the plurality of bend pieces 77. The rod-shaped member is not opened and closed by elastic deformation, but the base end side is rotatably attached with a pin or the like, and the rod-shaped member is opened and closed with the pin as a fulcrum. Similar to the bend piece 77, a protrusion 77b is provided at the tip of the rod-shaped member. As described above, various configurations can be adopted for the opening / closing portion. As described above, a configuration is adopted in which the base end of the support member 70, 270, 370 and the tip of the push rod 60, 260, 360 are connected by an elastically deformable opening / closing portion (77,277,390). Therefore, the configuration of the connecting portion can be simplified, which is more preferable.

(Modification 2)
The configuration of the feeding mechanism 8 and the configurations of the opening / closing portion (bend piece 77, 277, connecting member 390) and the fitting portion 67, 267, 377 are not limited to those described above, and various configurations can be adopted.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiments. No.

1,201,301: Cartridge holder 2,202,302: Cartridge 4,204: Cosmetics 8: Feeding mechanism 10,210,310: Cartridge outer cylinder 11a: Front end opening (opening on the tip side of the cartridge outer cylinder)
11b: Rear end opening (opening on the base end side of the cartridge outer cylinder)
17,217,317: Through holes 17a, 317a: Tip accommodating holes 17b: Sliding holes 17c, 217c, 317c: Base end holes 17d: Steps 20: Main body cylinder 30: Drive body 43: Female thread 50: Female thread member 53: Female thread 60, 260, 360: Push rod 61a: Male thread 67, 267, 377: Fitting part 70, 270, 370: Support member 70F: Front side support member (tip side support member)
70R: Rear support member (base end support member)
72,372: Support cylinder (support part)
75a, 275a: Ribs 175,275,375: Rod shaft portion 77,277: Bend piece (opening / closing part) 390: Connecting member (opening / closing part)
78: Shaft body 78a: Head 78b: Cylindrical part (pillar part)
99,299,399: Connecting part 100,200,300: Cartridge type cosmetic container

Claims (7)

It is a cartridge in which the feeding mechanism works by attaching it to the cartridge holder with a built-in push rod, and the stored cosmetics advance and retreat in conjunction with the advance and retreat of the push rod.
A cartridge outer cylinder having a through hole that communicates the opening on the tip side and the opening on the base end side,
A support member, which is housed in the cartridge outer cylinder so as to be movable in the axial direction and supports the cosmetic, is provided.
The support member is
A rod shaft portion whose base end is connected to the tip of the push rod,
It has a support portion provided at the tip of the rod shaft portion and supports the cosmetics, and has.
The outer diameter of the rod shaft portion is smaller than the outer diameter of the support portion.
The axial length of the rod shaft portion is set to be longer than the stroke from the retreat limit to the forward limit of the support member.
The through hole is
A tip accommodating hole provided on the tip side of the cartridge outer cylinder and accommodating the cosmetics,
A sliding hole provided on the base end side of the cartridge outer cylinder so as to communicate with the tip accommodating hole, and a connecting portion between the tip of the push rod and the base end of the support member slides in a state in which the connection cannot be disengaged.
It is provided in communication with the sliding hole on the base end side of the cartridge outer cylinder with respect to the sliding hole, and the connection between the tip of the push rod and the base end of the support member by the connecting portion can be released. With a base hole,
The inner diameter of the sliding hole is smaller than the inner diameter of the tip accommodating hole.
The inner diameter of the base end hole is larger than the inner diameter of the sliding hole.
The inner diameter of the sliding hole, Ri diameter der than the outer diameter of the support portion,
The support member has ribs
The cartridge outer cylinder has a groove portion that engages with the rib to prevent relative rotation with the support member.
The cartridge is characterized in that the groove portion is formed along the sliding hole. In the cartridge according to claim 1,
The connecting portion is provided at one of the base end of the support member and the tip of the push rod and can be opened and closed by elastic deformation, and the fitting provided at the other of the base end of the support member and the tip of the push rod. Consists of parts,
The base end of the support member and the tip of the push rod are connected when the opening / closing portion is closed and fitted to the fitting portion, and the connection is released when the opening / closing portion is opened. It becomes possible,
When the connecting portion is arranged in the sliding hole, the opening / closing portion is restrained by the inner peripheral surface of the sliding hole, so that the closed state of the opening / closing portion is maintained.
A cartridge characterized in that when the connecting portion escapes from the sliding hole and is located in the proximal hole, the opening / closing portion is released from the restraint. In the cartridge according to claim 2,
When the connecting portion is arranged in the sliding hole, the opening / closing portion is closed and fitted to the fitting portion, so that the connection cannot be released.
When the connecting portion escapes from the sliding hole and is arranged in the base end hole, the opening / closing portion is opened and the connection between the push rod and the support member can be released. Cartridge. In the cartridge according to claim 3,
The support member has a distal end side support member and a proximal end side support member made of a material different from the distal end side support member and connected to the distal end side support member.
The tip-side support member has the support portion that supports the cosmetic, and has the support portion.
The base end side support member is
The opening / closing portion connected to the tip of the push rod,
It has a pillar portion protruding from the support portion toward the opening on the tip end side of the cartridge outer cylinder, and a shaft body portion provided at the tip end of the pillar portion and having a head having a diameter larger than that of the pillar portion. death,
The shaft body portion is a cartridge characterized by being embedded in the cosmetic. The cartridge according to any one of claims 1 to 4,
With the cartridge holder
It is a cartridge type cosmetic container equipped with
The cartridge holder is
The main body cylinder to which the cartridge outer cylinder can be detachably attached to the front end,
A drive body provided at the rear end of the main body cylinder so as to be rotatable relative to the main body cylinder,
A urging member for urging the push rod rearward,
The feeding mechanism is
A female screw member provided on the main body cylinder and having a female screw formed on the inner circumference,
A cartridge characterized in that a male screw provided on the drive body and screwed to the female screw of the female screw member is formed on the outer periphery thereof, and has a push rod that advances and retreats by a relative rotation between the main body cylinder and the drive body. Formula cosmetic container. A cartridge holder used by being attached to the cartridge according to claim 1.
The main body cylinder to which the cartridge outer cylinder can be detachably attached to the front end,
A drive body provided at the rear end of the main body cylinder so as to be rotatable relative to the main body cylinder,
A urging member for urging the push rod rearward,
The feeding mechanism is
A female screw member provided on the main body cylinder and having a female screw formed on the inner circumference,
A male screw provided on the drive body and screwed to the female screw of the female screw member is formed on the outer periphery thereof, and has the push rod which advances and retreats by the relative rotation of the main body cylinder and the drive body.
When the push rod is located in the retreat limit, the connecting portion is arranged in the proximal hole.
A cartridge holder characterized in that the connecting portion is arranged in the sliding hole when the push rod is located in the forward limit. In the cartridge holder according to claim 6,
The connecting portion has an opening / closing portion provided at the tip of the push rod and which can be opened / closed by elastic deformation, and a fitting portion provided at the base end of the support member.
The base end of the support member and the tip of the push rod are connected when the opening / closing portion is closed and fitted to the fitting portion, and the connection is released when the opening / closing portion is opened. It becomes possible,
When the connecting portion is arranged in the sliding hole, the opening / closing portion is restrained by the inner peripheral surface of the sliding hole, so that the closed state of the opening / closing portion is maintained.
A cartridge holder characterized in that when the connecting portion escapes from the sliding hole and is located in the base end hole, the opening / closing portion is released from the restraint.

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