JP6045127B2 - Applicator - Google Patents

Description

  The present invention relates to a fluid applicator for applying a fluid such as ink or eyeliner (including the concept of writing), more specifically, before the start of use such as storage or sales. The present invention relates to a fluid applicator in which the supply of fluid to the tip is stopped in a state, and the fluid is made to conduct to the tip when the purchaser uses it.

  Conventionally, in an applicator provided with a coating part on the tip of the tip of the shaft body that has been internally stored with ink, when not in use, the stopper is held so that the coating liquid does not flow to the coating part. A technique is disclosed in which a coating liquid accommodated in the shaft body is communicated with the coating portion by press-fitting the shaft body into the shaft and can be applied (for example, Japanese Patent Publication No. 7-25259 (Patent Document 1)). No. 4321909 (: Patent Document 2), Japanese Patent No. 4530706 (: Patent Document 3), Japanese Patent Application Laid-Open No. 2001-88793 (: Patent Document 4)).

No. 7-25259 Japanese Patent No. 4321909 Japanese Patent No. 4530706 JP 2010-88793 A

However, since the applicator disclosed in Patent Documents 1 to 4 is fitted with the front shaft and the shaft body by undercut,
(i) There is a large difference in press-in / pull-out force due to coloring of the components (pigments, pearls, lubricating components).
(ii) The click feeling at the time of press-fitting the front shaft is poor, and the user may stop during the press-fitting and cause a seal failure.
(iii) Since the undercut of the front shaft is located on the inner surface side of the front shaft, there is a problem that it is difficult to check visually and molding defects are easily overlooked.
In addition, if you remove the vertical convex part that is an undercut, the inner diameter of the tip shaft can be controlled by a pin gauge, but the tip shaft and the shaft body can be easily slipped and rotated when installed, and they fit when used. May loosen.

  In view of the above circumstances, the present invention provides an applicator that can ensure reliable fitting without reducing the fitting force of the front shaft of the shaft body.

The present invention provides a fluid reservoir inside, a shaft main body that maintains a state in which the fluid discharge port is sealed with a stopper before the start of use, and a stopper that holds the coating portion and before the use starts. The temporary joining state that is not directly joined to the shaft main body is maintained, and on the other hand, when the stopper is removed at the start of use, the length of the stopper moves in the axial direction to join the shaft main body directly. The shaft is placed in a state of being in contact with the stopper of the shaft body by the movement of the tip shaft that is disposed inside the shaft and is finally joined to the shaft body. In a fluid applicator comprising a fluid conducting tube that enables the fluid to be supplied from the part to the application part,
On the outer peripheral surface of the front end portion of the shaft body, there are formed an axial groove, an annular convex portion for fitting in the circumferential direction, and a projection portion that is temporarily joined to the front shaft,
An annular recess for fixing and fixing a cap is formed on the outer peripheral surface of the front shaft, and the inner peripheral surface of the front shaft is locked to the annular convex portion of the shaft main body and is finally joined. The rib having a substantially trapezoidal cross-sectional shape along the axial direction is formed to protrude inward substantially over the entire circumference,
A longitudinal longitudinal rib is formed on a part of the rib,
When the front shaft is temporarily joined to the front end portion of the shaft body, the vertical rib is fitted in the axial groove,
On the other hand, the rib on the inner peripheral surface of the front shaft is fitted to the rear portion of the convex portion when the stopper is removed and the front shaft moves during the main joining from the temporarily joined state to the front end of the shaft body. And it is this applicator characterized by carrying out this joining by the relative rotation of the said front shaft and the said shaft main body being controlled.

In the applicator of the present invention, an annular rib that is finally joined to the shaft main body is formed on the inner periphery of the front shaft over substantially the entire periphery, so that the fitting force between the front shaft and the shaft main body has no rib. In this case, the fitting force is improved as compared with the case where the protrusions are formed intermittently.
Therefore, the click feeling at the time of inserting the front shaft becomes sufficient, and there is no possibility that the user stops during the press-fitting. Moreover, since the inner periphery of the front shaft can be visually recognized at various angles from the axial center direction by forming the rib on substantially the entire circumference, the rib can be easily visually recognized. Moreover, the fitting at the time of use does not become loose like a case without a rib.

The shape of the cross section along the axial direction of the ribs is substantially the trapezoid can be equal to ensure the area of the inner peripheral end surface of the rib, enhancing the fitting force. In the present invention, the substantially trapezoidal shape of the ribs does not necessarily require the corners of the trapezoid to have an edge shape, and may have an arc shape.

Further, the rib is not limited to the one formed completely over the entire circumference, and the rib in the longitudinal direction may be formed in part. In addition, even if a part of periphery is interrupted, a rib can be comprised in the range which does not produce a problem in fitting force.
Moreover, the groove of the rib can be eliminated by forming a protrusion on the surface of the shaft body that is temporarily joined to the tip shaft. Thereby, the fitting force can be further improved.

It is explanatory drawing of the whole cross section of the applicator using the rotary delivery container which concerns on the 1st Embodiment of this invention, Comprising: (a) is an applicator in the state with which the stopper was mounted | worn before use start, (b) These are each explanatory drawings of the applicator of the state from which the stopper removed after use start. It is explanatory drawing which contrasts the front axis | shaft of the applicator which concerns on a comparative example, and the front axis | shaft of the applicator which concerns on 1st Embodiment, (a) is a cross section of the front axis | shaft which concerns on a comparative example, (b) is the same. The longitudinal section, (c) is the rear view, (d) is the transverse section of the front shaft according to the first embodiment, (e) is the longitudinal section, and (f) is the rear view. It is explanatory drawing of the front axis | shaft of the applicator which concerns on 1st Embodiment, Comprising: (a) is an expanded longitudinal cross-sectional view around a rib, (b) is a longitudinal cross-sectional view of a front axis. It is explanatory drawing which contrasts the structure of each front-end part in the shaft main body which concerns on a comparative example, and the shaft main body which concerns on 1st Embodiment, Comprising: (a) is the whole longitudinal cross-sectional view of both shaft main bodies, (b) is a comparison. The front view of the front end of the shaft body according to the example, (c) is a side enlarged view of the front end, and (d) is the view from the front of the front end of the shaft body according to the embodiment. (E) is a side enlarged view of the front end portion. (A), (b) is the side view of a screw rod, and XX sectional drawing. (A)-(c) is explanatory drawing of a piston body, (a) is a front perspective view of a piston body, (b) is a back perspective view, (c) is a longitudinal cross-sectional view. (A)-(d) is explanatory drawing of the knock type delivery container which concerns on the 2nd Embodiment of this invention, Comprising: (a) is the external appearance figure of the whole knock type delivery container of a crown crown non-pressing state, (B) is a longitudinal sectional view of the feeding container, (c) is an overall external view of the state rotated 90 ° axially from (a), and (d) is 90 ° axially from (b). Sectional drawing of the state rotated is shown. The cross-sectional enlarged view of the knock mechanism part of the crown-shaped non-pressing state in the knock type delivery container shown in FIG. 7 is shown. The cross-sectional enlarged view of the knock mechanism part of the canopy pressing state of the knock type feeding container of FIG. 7 is shown. (A)-(f) is operation | movement explanatory drawing of the knock mechanism part of the said knock type delivery container. (A)-(e) is explanatory drawing of a rotary body, (a) is a front perspective view of a rotary body, (b) is a back perspective view, (c) is a side view, (d) is a longitudinal cross-sectional view. (E) is a front view. (A)-(h) is explanatory drawing of a crown, (a) is a front perspective view of a crown, (b ) is a side view, (c) is a back perspective view, (d) is a front view. (E) is a side view different from (b), (f) is a rear view, (g) is a front perspective view different from (a), and (h) is a longitudinal sectional view. (A)-(d) is explanatory drawing of a screw body, (a) is a front perspective view of a screw body, (b) is a back perspective view, (c) is a longitudinal cross-sectional view, (d) is a screw part. It is an expanded sectional view of the periphery. (A), (b) is the perspective view and longitudinal cross-sectional view of a shaft main body. (A)-(g) is explanatory drawing of a cam body, (a) is a rear perspective view, (b) is a front perspective view, (c) is a longitudinal cross-sectional view, (d) is a side view, e) is a side view different from (d), (f) is a longitudinal sectional view, and (g) is a rear view. It is a figure which shows the meshing state of a crown and a cam body.

Hereinafter, the applicator according to the present invention will be described based on the embodiments shown in the drawings.
1-6 is explanatory drawing of the applicator using the rotary delivery container which concerns on 1st Embodiment. Some comparative examples are also described. Drawing 1 is an explanatory view of the whole section of an applicator using the rotary delivery container concerning a 1st embodiment. FIG. 2 is an explanatory diagram comparing the front shaft according to the comparative example and the front shaft according to the embodiment. FIG. 3 is an explanatory diagram of a front shaft according to the embodiment. FIG. 4 is an explanatory diagram comparing the structure of the distal portion with respect to the shaft body according to the comparative example and the shaft body according to the embodiment. FIG. 5 is an explanatory diagram of a screw rod. FIG. 6 is an explanatory view of the piston body.

  The applicator according to the first embodiment is provided with a fluid reservoir (container) 24 inside, and as shown in FIG. 1 (a), the outlet of the fluid is plugged before use. The shaft main body 10 that maintains the sealed state and the temporarily bonded state that is temporarily bonded to the shaft main body 10 via the stopper (also referred to as a plug body) 26c before the start of use while holding the application portion are maintained. As shown in FIG. 1 (b), when the stopper 26c is removed at the start of use, the spindle 20 moves in the axial direction by the length of the stopper 26c and enters the state of the main joining directly joined to the shaft body 10. And a seal ball (plug) 24b of the shaft main body 10 that is disposed inside the front shaft 20 and moved when the front shaft 20 is finally joined to the shaft main body 10 to remove the bottle. The fluid from the storage unit 24 to the neck (application unit) 22 Joint 14 which allows the sheet, pipe fittings 16, but according to the applicator of the fluid comprising a fluid conduit, such as pipe 18.

  The applicator according to the first embodiment is a rotary feeding container. As shown in FIG. 1, the crown 12 </ b> A disposed at the rear end of the shaft body 10 is arranged in the circumferential direction with respect to the shaft body 10. It is a container which can draw out the fluid contents in the storage part 24 by rotating relatively.

  The applicator is fixed to the shaft main body 10, a crown 12 </ b> A rotatably fitted to the rear end of the shaft main body 10, a drive cylinder 52 that transmits the rotational force of the crown 12 </ b> A by the user to the screw rod 30, and the shaft main body 10. Then, the screw body 54 is engaged with the threaded rod 30, the threaded rod 30 is rotatably engaged with the piston body 50 at the tip, and the piston body 50 is slid within the storage portion 24 of the shaft body 10. The rotation of the crown 12A is transmitted to the screw rod 30 through the drive cylinder 52, and the screw rod 30 and the piston body 50 are advanced by the rotation of the screw rod 30 through the female screw of the nut-like screw body 54. The contents are fed out from the storage unit 24.

  As shown in FIG. 4, the shaft body 10 has a front end portion 10 a with a reduced diameter, but a concave and convex stepped fitting portion 10 b is formed at the rear end portion of the inner peripheral surface, and slightly behind the center portion. The rib 10c projects inward and extends in the axial direction. When the screw body 54 is attached to the shaft body 10, the screw body 54 is inserted forward from the open rear end of the shaft body 10, and is advanced while being attached to the groove portion on the outer periphery of the screw body 54 on the rib 10c. Go in.

  As shown in FIG. 1, the crown can 12 </ b> A has a cylindrical operation portion that is closed by fitting a lid at the rear end thereof, and is rotatably fitted to the rear end portion of the shaft tube 10 (inside the fitting portion 10 b). And is exposed). A drive cylinder 52 is fitted into the crown 12A and fixed in the rotational direction, and a screw body 54 is mounted in the drive cylinder 52 so as to be fixed in the rotational direction and relatively movable in the axial direction.

  In the rotary feed container, a joint 14, a pipe joint 16, a pipe 18, a tip shaft 20, and a head 22 are attached to the front end 10 a of the shaft body 10. The storage part 24 of the shaft body 10 contains a fluid of contents (in the embodiment, a coating liquid such as fluid cosmetics), and the fluid fed from the storage part 24 passes through the pipe 18 and the neck 22. It is discharged to the tip and can be applied by the neck 22. Further, the cap 26 is formed so that it can be attached (fitted) to the front shaft 20 so as to cover the head 22 and the front shaft 20 after use.

In FIG. 1, reference numeral 24a is an agitation ball for agitating the contents in the reservoir 24 by reciprocating motion, and 24b is a seal ball.
Reference numeral 26a denotes an inner cap in the cap 26, and 26b denotes a spring for biasing the inner cap rearward.
Reference numeral 26c indicates that the joint 14, the pipe joint 16, the pipe 18, the front shaft 20, and the head 22 are positioned at a position where the flow path of the coating liquid from the content pipe 18 to the head 22 is closed when not in use. For this purpose, the stopper is a ring-shaped portion mounted between the rear end of the front shaft 20 and the front surface of the stepped portion of the front end portion 10a of the shaft body 10. The stopper 26c has a part of the ring-shaped part cut off, and a knob piece is integrally formed on the opposite side of the cut-off part. It can be removed from between the rear end of the front shaft 20 and the front end portion 10 a of the shaft body 10.

As shown in FIG. 1A, when not in use, the seal ball 24 b is fitted and sealed in the inner diameter portion of the joint 14 so that the contents do not flow into the pipe 18.
On the other hand, as shown in FIG. 1B, when used, the user pulls out the stopper 26c from the shaft body 10 and pushes the front shaft 20 to the rear end side, so that the rear end small diameter portion of the pipe joint 16 becomes the seal ball. The seal ball 24b is removed from the inner diameter portion of the joint 14 and abuts into the storage portion 24, and the fluid of the contents in the storage portion 24 enters the pipe 18 from the inner diameter portion of the joint 14 and the pipe joint 16. The fluid is supplied to the neck 22 from the inside and can be applied to the target portion.
Note that the present invention is not limited to the use of a seal ball for sealing the joint. For example, a thin film can be provided integrally with the joint 14 as a sealing member to replace the sealing ball 24b.

  As shown in FIGS. 1 and 4, the shaft body 10 has a front end portion 10 a having a smaller diameter than the storage portion 24 formation portion when viewed in the axial direction, and has a cylindrical shape in the front end portion 10 a. The joint 14 and the pipe joint 16 are fitted in a state covered with the rear portion of the front shaft 20. In the front part of the tip shaft 20, a tip 22 of a brush-tip shape in which a large number of fibers are bundled or formed of an open cell body is sandwiched as an application part (applying body) in front of the pipe joint 16. In addition, the application part can employ | adopt appropriate structures other than this kind of head.

  The joint 14 has a generally cylindrical shape with a flange-like tip that expands to the outer periphery and a rear end that has a small hole (an insertion hole for the seal ball 24b) on the inner periphery. 10a, a pipe joint 16 is inserted into the joint 14 from the front, and a pipe 18 for liquid induction is inserted and supported in the pipe joint 16 from the reservoir 24 toward the head 22 Has been. A cap 26 is fitted to the front end portion 10a so as to cover the head 22 and the front shaft 20.

  As shown in FIGS. 1 and 5, the screw rod 30 is a rod-like long body having a cross-sectional shape that fits the modified cross-sectional hole on the inner periphery of the drive cylinder 52 and having an external thread 30 a on the outer peripheral portion. The front end portion is formed with a fitting portion 30b that protrudes in the radial direction like a flange, and the piston body 50 is fitted into the fitting portion 30b.

  As shown in FIG. 6, the piston body 50 includes a main body 50a that is in sliding contact with the inner wall of the reservoir 24, a hollow cylindrical portion 50b that extends rearward from the main body 50a, and an uneven fitting portion 50c in the hollow cylindrical portion 50b. It has. The fitting portion 50c of the piston body 50 is configured to fit (insert) the fitting portion 30b at the tip of the screw rod 30 into the fitting portion 50c of the piston body 50, thereby restricting forward and backward movement so as to be relatively rotatable. In this state, the piston body 50 is disposed in the storage portion 24 of the shaft body 10 so as to be able to advance and retract.

  As shown in FIGS. 1 and 5, the drive cylinder 52 of the crown 12 </ b> A is provided with a modified cross-sectional hole such as an oval type, and a screw body 54 having an internal thread formed on the inner periphery is fixed to the shaft body 10, A screw rod 30 having a cross-sectional shape that matches the modified cross-sectional hole of the drive cylinder 52 and has an external thread 30a formed on the outer periphery thereof is screwed into the threaded portion of the screw body 54 and passed through the modified cross-sectional hole of the drive cylinder 52. In this state, the screw rod 30 is rotated by the rotation of the drive cylinder 52. By this rotation, the piston body 50 moves forward in the storage portion 24 and supplies the contents of the fluid such as cosmetics to the neck 22 that is the application body in the front shaft 20.

Here, as shown in FIGS. 2 (d) to 2 (f) and FIG. 3, the front shaft 20 has a generally cone shape with a tapered tip than the rear portion. Ribs 56 to be temporarily joined are formed over substantially the entire circumference.
The shape of the cross section along the axial direction of the rib 56 is a substantially trapezoid. The shape of the cross section of the rib 56 is not limited to a trapezoidal shape with corners being edges, but may be a shape obtained by chamfering a corner or an arc shape.

  In the front shaft 20, the inner periphery of the tip portion is formed in a cylindrical inner periphery shape that accommodates the neck 22, and the engagement step portion 20 a for fitting the pipe joint 16 is formed in the inner periphery of the center portion. An annular recess for fitting and fixing the cap 26 is formed on the outer peripheral surface of the front shaft 20.

In addition to the ribs 56, guide ribs 58 are formed in the rear inner periphery of the front shaft 20 so as to project inward in the direction along the axial direction.
A groove 10a1 is formed in the axial direction on the outer periphery of the front end portion 10a of the shaft body 10, and a convex portion 10a2 for fitting in the circumferential direction is formed in an annular shape. When the front shaft 20 is fitted to the shaft main body 10, the vertical rib 58 is fitted into the groove 10a1, the relative rotation of the front shaft 20 and the shaft main body 10 is restricted, and the rib 56 is the convex. The front shaft 20 is surely prevented from coming off by being fitted into the portion 10a2 and finally joined.
The rear part of the front shaft 20 is larger in diameter than the rib 56 and extends rearward to form a bowl-like shape, and the enlarged part covers the stepped portion of the front end 10a of the shaft body 10, Protrusions that contact and support the stepped portion are arranged in an array on the rear side of the bowl.

  In order to compare the fitting force of the rib 56 (the pull-out resistance against the shaft main body 10 which is improved by the rib 56 compared to the conventional case, the difficulty of coming off), FIGS. 2 (a) to 2 (c) show comparative examples. Indicates the tip axis. The front shaft of this comparative example has discontinuous protrusions 60 and 60 arranged on the inner periphery of the rear portion of the front shaft 20. The protrusions 60 and 60 are undercuts whose circumferential length is shorter than the distance between the arranged protrusions 60 and 60 in the circumferential direction.

Thus, compared with the undercut fitting of the protrusion 60 according to the comparative example, according to the rib 56 of the embodiment shown in FIGS. Is small, the click feeling is sufficient, and it is difficult for the user to cause a sealing failure that stops the press-fitting in the middle, and it is easy to look through the opening at the rear end of the front shaft at the time of forming the front shaft.
The rib 56 according to the present invention may have a partial groove and may not be a rib that extends over the entire circumference. In that case, it is preferable that the length of the partial groove along the circumferential direction is shorter than the length of the rib 56 and has the same cross-sectional shape.

Further, as shown in FIGS. 4D and 4E, a protrusion 62 is formed on the surface of the front end portion 10a of the shaft body 10 that is temporarily joined to the tip shaft 20. The protrusion 62 has the shape of a spherical side surface shape, so that there is no glide force caught overcame front barrel 20 inner surface of the rib 56 at the time of front barrel 20 fitted and the front barrel 20 the inner surface of the ribs 56, previously easily fitted to the shaft 20 to the front end portion 10a of the shaft body 10, and there is no need to cut a groove in the rib 56, higher than in the case fitting force of the ribs 56 themselves because there is no groove Ru Yes groove Become.

FIGS. 7-16 is explanatory drawing of the applicator using the knock type delivery container which concerns on 2nd Embodiment. In addition, in the figure, the same code | symbol is attached | subjected to the location similar to 1st Embodiment.
FIG. 7 is an explanatory view using the knock-type feeding container according to the second embodiment, and FIG. 8 is an enlarged cross-sectional view of the knock mechanism portion of the knock-type feeding container shown in FIG. FIG. 9 is an enlarged cross-sectional view of the knock mechanism portion of the knock-type feeding container of FIG. 10 (a) to 10 (f) are operation explanatory views of the knock mechanism portion of the knock-type feeding container.

  11A to 11E are explanatory views of a rotating body, FIGS. 12A to 12H are explanatory views of a crown, and FIG. 11A is a front perspective view of the crown, and FIG. (C) is a rear perspective view, (d) is a front view, (e) is a side view different from (b), (f) is a rear view, and (g) is different from (a). (H) is a longitudinal cross-sectional view. FIGS. 13A to 13D are explanatory views of the screw body. 14A and 14B are a perspective view and a longitudinal sectional view of the shaft body. FIGS. 15A to 15G are explanatory views of the cam body. FIG. 16 is a view showing a state in which the crown and the cam body are engaged with each other.

  As shown in FIG. 7, the knock-type feeding container according to the embodiment feeds the contents in the storage unit 24 by pressing the crown 12 disposed at the rear end of the shaft body 10 forward in the axial direction. A knock mechanism A for converting the pressing force of the crown 12 by a user's knocking operation into a rotational force, a screw body 28 fixed to the shaft body 10, and a screw on the screw body 28. The screw rod 30 is rotated by the rotational force converted by the knock mechanism A, and the screw rod 30 is advanced through the screw body 28 to repeat the contents. It has a structure to take out.

  In the knock type feeding container, a joint 14, a pipe joint 16, a pipe 18, a tip shaft 20, and a head 22 are attached to the front end portion 10a of the shaft body 10, and the contents in the shaft body 10 (in the embodiment, Fluids such as fluid cosmetics) The contents fed from the storage unit 24 pass through the pipe 18 and are discharged to the tip of the ear 22. Further, the cap 26 can be attached after use. In FIG. 7, reference numeral 24a denotes a stirring ball for stirring the contents in the storage unit 24 by reciprocating motion, 26a denotes an inner cap, 26b denotes a spring for biasing the inner cap, 26c denotes a pipe 18 for the contents when not in use. It is a stopper that closes the distribution to the following. When the pipe 18 is not used, the seal ball 24b is in close contact with the inner diameter of the joint 14 so that the contents do not flow into the pipe 18 when the pipe 18 is not used. By pulling out the main body 10 and pushing the front shaft 20 toward the rear end side, the seal ball 24b is removed from the inner diameter portion of the joint 14, and the contents can flow into the pipe 18 and be applied.

  Further, as shown in FIGS. 7 and 14, the shaft body 10 has a front end portion 10a having a small diameter in a step shape when viewed in the axial direction, and a cylindrical joint 14 and a pipe joint 16 are provided in the front end portion 10a. It is inserted in a state covered with the rear part of the front shaft 20, and a large number of fibers are bundled as an application body at the front of the pipe joint 16 in the front part of the front shaft 20, or a brush-shaped head 22 made of an open cell body. Is pinched. The application body can adopt an appropriate configuration other than this type of neck.

  The joint 14 has a substantially cylindrical shape with an enlarged diameter at the tip, and is fitted into the front end portion 10a of the shaft body 10, and a pipe joint 16 is inserted into the pipe 14 from the front into the forward opening of the joint 14. A liquid guiding pipe 18 is inserted and supported from the reservoir 24 toward the neck 22. A cap 26 is fitted to the front end portion 10a so as to cover the head 22 and the front shaft 20.

The specific configuration of each part will be described below.
[Knock mechanism A that converts pressing force into rotational force]
As shown in FIGS. 7 and 8, the knock mechanism A that converts the force generated by pressing the crown 12 into a rotational force includes a rotating body 36 having a first cam surface 32 and a second cam surface 34. The screw body 28 having the first fixed cam surface 38 and the cam body 42 having the second fixed cam surface 40 are main components.

[Rotating body 36]
As shown in FIGS. 7 and 11, the rotating body 36 is disposed such that the crown 12 can rotate and the axial movement is restricted, and the first cam surface 32 facing forward and the second cam facing backward. The surface 34 is formed in an annular shape, and is disposed on the shaft body 10 so as to be rotatable and movable in the axial direction.

As shown in FIG. 11, the rotating body 36 has a generally hollow cylindrical annular shape, and has a step portion in which a convex step toward the front is formed on the front surface at the front end portion in the axial direction. A first cam surface 32 having 33 is formed, and an odd-shaped cross-sectional hole 46 such as an oval shape is formed in the inner diameter portion. A second cam surface 34 facing rearward is formed on the rearward facing surface of the annular portion whose diameter is increased stepwise on the outer peripheral portion of the axially central portion of the rotating body 36. In addition, a flange-like uneven fitting portion 36 a is formed on the outer periphery of the rear end portion of the rotating body 36.
It is possible to provide not only the first cam surface 32 but also the second cam surface 34 with a stepped portion having the same step as the stepped portion.

  As shown in FIG. 12, the crown 12 has a substantially cylindrical container shape with one axial end closed, and an uneven stepped locking portion 12 a is formed on the inner periphery of the rear part. When the rear end portion of the rotating body 36 is pushed in from the front end opening of the top crown 12, the fitting portion 36a is fitted into the locking portion 12a. The dimensions of the fitting portion 36a and the locking portion 12a are formed so that the crown 12 restricts the movement of the rotating body 36 in the axial direction. Moreover, the crown-shaped projection part 12b protruded toward the front from the front side end surface of the crown 12 (along the axial direction) is formed. Although the number of crown projections 12b is two in parallel in the drawing, it is not particularly specified.

[Screw body 28]
As shown in FIGS. 7 and 13, the screw body 28 is a substantially hollow cylindrical body having a front end portion reduced in a step shape and a rear end portion enlarged in a step shape. The front end portion is a cylindrical portion 28a having a stepped diameter, and has a screw portion 48 having a female screw formed on the inner diameter portion, and the rear surface of the cylindrical portion 28a with the screw portion 48 is in the middle of the slope. A first fixed cam surface 38 provided with a stepped portion 39 that is recessed forward is formed.

  The rear end portion 28b of the screw body 28 is enlarged in a flange shape, and is a portion for inserting the crown 12 so that it can be rotated and moved forward and backward. A portion adjacent to the front of the rear end portion 28b is axially provided. Along the slit 28c is formed so as to communicate with the inside and outside of the plurality of screw bodies 28, and a fitting portion 28d formed with irregularities on the outer peripheral portion is formed. Further, a plurality of groove portions 28e along the axial direction are formed in the front outer peripheral portion. A rib 28f for positioning a spring member 44, which will be described later, in the radial direction is formed in the front inner periphery of the screw body 28 so as to protrude inward and extend in the axial direction.

[Shaft body 10]
As shown in FIG. 14, the shaft main body 10 has a front end portion 10 a with a reduced diameter, but a concave and convex stepped fitting portion 10 b is formed at the rear end portion of the inner peripheral surface, slightly behind the center portion. The rib 10c projects inward and extends in the axial direction. When attaching the screw body 28 to the shaft body 10, the screw body 28 is inserted forward from the open rear end of the shaft body 10, and the rib 10c is advanced and fitted into the groove 28e. go.

Then, the fitting portion 10b is pressed and fitted over the concavity and convexity of the fitting portion 28d of the screw body 28, and at this time, the diameter-expanded portion of the rear end portion 28b of the screw body 28 is the shaft main body 10. Proceed until it hits the rear edge. Since the rib 10c is tightly attached to the groove 28e and the fitting portion 10b is tightly attached to the fitting portion, the screw body 28 is fixed in the rotational direction and the axial direction with respect to the shaft main body 10, so that there is a mounting relationship.
The space in front of the screw body 28 of the shaft main body 10 constitutes a content storage section 24.

[Cam body 42]
As shown in FIG. 15, the cam body 42 has a substantially hollow cylindrical shape, a second fixed cam surface 40 is formed on the front end surface, and a protruding portion 42 a extends in the axial direction on the outer peripheral side surface from the center portion to the rear portion. Has been. Further, the rear end surface of the cam body 42 is at a position substantially perpendicular to the protrusion 42a (the position in the rotational direction about the axis of the cam body 42 has a 90 ° angle difference from the protrusion 42a). The cam body groove 42b is formed by cutting toward the front side. In the cam body 42, the position of the cam body groove 42b in the rotational direction with respect to the protrusion 42a is not specified unless it is a position in contact with the protrusion 42a.

As shown in FIGS. 7 and 8, the cam body 42 is inserted into the screw body 28 while being movably fitted on the outer periphery of the rotating body 36, and the protrusion 42 a is inserted into the slit 28 c of the screw body 28. Then, the screw body 28 is fitted into the rear end portion 28b. As a result, the cam body 42 is fixed to the screw body 28 so as not to move in the rotational direction and the axial direction, and the screw body 28 is fixed to the shaft body 10 as described above. 42 is also fixed to the shaft body 10 in the rotational direction and the axial direction. Further, as shown in FIG. 16, the cam body groove 42b is loosely fitted into the crown projection 12b of the crown 12 so that the crown 12 is fixed to the shaft body 10 in the rotational direction and the axial direction. The structure does not rotate with respect to the body 42 and can move forward and backward (rotation prevention means). Therefore, the crown 12 has a structure that does not rotate with respect to the shaft body 10 and can move forward and backward.
Note that a step similar to the step 39 of the first fixed cam surface 38 may be provided on the second fixed cam surface 40 of the cam body 42 described above.
Further, the crown canopy 12b is play-fitted into the cam body groove 42b of the cam body 42 to prevent the crown crown 12 and the cam body 42 from rotating as a means for preventing the crown 12 from rotating. The phenomenon that the crown 12 and the rotating body 36 rotate together can be avoided, and the cam operation failure caused by the screw body 28 and the rotating body 36 at the time of knocking can be prevented. Although the crown 12 is prevented from rotating with respect to the shaft main body 10 via the cam body 42, a rotation preventing means is formed between the rear portion of the screw body 28 and the shaft main body 10. Are also within the scope of the present invention.

[Spring member 44]
As shown in FIGS. 7 and 8, in the screw body 28, a side surface opposite to the second cam surface 34 of the annular projecting portion of the front outer periphery of the rotating body 36, and a first fixed cam surface of the screw body 28. A spring member 44 is disposed between the portion surrounding the portion 38. The spring member 44 is brought into a meshed state by bringing the second cam surface 34 of the rotating body 36 into contact with the second fixed cam surface 40 in a state where the pressure on the crown 12 is released. Thus, there is a function of urging the rotating body 36 backward. The spring member 44 can be smoothly fed out by removing burrs on the spring end surface and smoothing it by barrel processing.

[Screw rod 30, piston body 50]
As shown in FIG. 5, the screw rod 30 is a rod-like long body having a cross-sectional shape that matches the deformed cross-sectional hole 46 of the rotating body 36 and a male screw 30 a formed on the outer peripheral portion. At the front end portion, a fitting portion 30b that protrudes in the radial direction like a flange is formed. A piston body 50 slidable with the shaft body 10 and moves integrally with the screw rod 30 in the axial direction is fitted to the tip of the screw rod 30.

  As shown in FIGS. 7 and 6, the piston body 50 includes a main body 50 a slidably contacting the inner wall of the storage portion 24, a hollow cylindrical portion 50 b extending rearward from the main body 50 a, and uneven fitting in the hollow cylindrical portion 50 b. The joint part 50c is provided. The fitting portion 50c of the piston body 50 restricts the movement in the front-rear direction so as to be relatively rotatable by fitting the fitting portion 30b at the tip of the screw rod 30 to the fitting portion 50c of the piston body 50. In this state, the piston body 50 is disposed in the storage portion 24 of the shaft body 10 so as to be able to advance and retract.

  As shown in FIG. 7, the rotary body 36 is provided with an odd-shaped cross-sectional hole 46 such as an oval shape, and a screw body 28 having a screw portion 48 formed of an internal thread and a first fixed cam surface 38 is fixed to the shaft body 10. The screw rod 30 having a cross-sectional shape matching the modified cross-sectional hole 46 of the rotating body 36 and having an external thread 30a formed on the outer periphery thereof is screwed into the threaded portion of the screw body 28, and the modified cross-sectional hole of the rotating body 36 is formed. The threaded rod 30 is rotated by the rotation of the rotating body 36 in the state of passing through 46. By this rotation, the piston body 50 moves forward in the storage portion 24 and supplies liquid contents such as cosmetics to the neck 22 that is an application body in the front shaft 20.

  The first fixed cam surface 38 and the second fixed cam surface 40 face the first cam surface 32 and the second cam surface 34, respectively, and are fixed to the shaft body 10 in the axial direction and the rotational direction. Has been.

  Details of each of the first fixed cam surface 38 and the second fixed cam surface 40, and the first cam surface 32 and the second cam surface 34 will be described with reference to FIG. In FIG. 10, only one tooth is shown for the first cam surface 32 and the second cam surface 34 for convenience of illustration, but in the embodiment, a plurality of teeth are formed as shown in FIG. Yes. Of course, the number of the other teeth may be one or more as long as one tooth of the facing cam surface is continuous without a gap.

  Specifically, the first cam surface 32 of the rotator 36 is concave forward on a slope inclined forward (downward in front view in FIG. 10) with respect to a predetermined rotation direction of the rotator (leftward in front view in FIG. 10). The first fixed cam surface 38 of the screw body 28 has a stepped stepped portion 39 on the front side of a slope 38a1 inclined forward with respect to a predetermined rotation direction of the rotating body 36. . The first cam surface 32 of the rotating body 36 and the first fixed cam surface 38 of the screw body 28 have first teeth 32a and 38a having inclined surfaces 32a1 and 38a1 inclined in a predetermined rotation direction of the rotating body 36. A plurality of step portions 33 and 39 are provided in the intermediate portions of the respective first teeth of the first cam surface 32 and the first fixed cam surface 38, which are formed in the predetermined rotation direction at the same pitch. It has been.

  Further, the second cam surface 34 of the rotating body 36 and the second fixed cam surface 40 of the cam body 42 are rearward (see FIG. 10) with respect to a predetermined rotational direction of the rotating body 36 (left direction in front view in FIG. 10). In FIG. 10, a plurality of second teeth 34a and 40a having inclined surfaces 34a1 and 40a1 inclined in the front direction (in the front view) are formed at the same pitch in a predetermined rotation direction.

  In the embodiment, the pitches of the first cam surface 32 and the first fixed cam surface 38 and the second cam surface 34 and the second fixed cam surface 40 are also formed to be the same. When the number of teeth on the facing cam surface is different, one of the first cam surface 32 and the first fixed cam surface 38 and one of the second cam surface 34 and the second fixed cam surface 40 have teeth. It is sufficient if the pitch is the same.

  When the user knocks the crown 12, the first cam surface 32 is engaged with the first fixed cam surface 38 with the first cam surface 32 of the rotating body 36 by the pressing force. When the surface 32 is guided along the inclined surface 38a1 inclined forward of the teeth 38a of the first fixed cam surface 38 (see FIGS. 10B to 10C), the rotating body 36 moves forward. And it rotates in a predetermined direction. Specifically, the tip of the step 33 of the first cam surface 32 slides on the slope 38a1 of the first fixed cam surface 38.

  At this time, as shown in FIG. 10 (d), the stepped portion 33 provided on the first cam surface 32 is fitted into the stepped portion 39 provided on the first fixed cam surface 38. That is, the stepped portion 33 of the teeth 32a of the first cam surface 32 moves into the recess of the stepped portion 39 of the first fixed cam surface 38a, and the stepped portion 33 fits into the recessed portion of the stepped portion 39. When the rotational end surface (wall surface 32a2) of the step portion 33 of the tooth 32a of the first cam surface 32 comes into contact with the wall surface 38a2 at the counter rotational end of the first fixed cam surface 38, a striking sound, that is, a knocking sound is generated. And the user holding the feeding container can get a sense of knocking on the fingers.

On the other hand, when the second cam surface 34 of the rotating body 36 is engaged with the second fixed cam surface 40 by the release of the pressing, the second cam surface 34 is inclined to the inclined surface 40a1 inclined to the rear of the teeth 40a. By being guided along (see FIGS. 10E to 10F), the rotating body 36 moves backward and rotates in a predetermined rotation direction.
The knock mechanism A is configured to rotate by each cam as in the above operation, and the screw rod 30 is rotated by the rotation of the rotating body 36.

  Here, in a state where the first cam surface 32 of the rotating body 36 is engaged with the first fixed cam surface 38 (see FIG. 10D), the second fixed cam surface 40 rotates. The phase is set so as to be out of phase with respect to one tooth of the first fixed cam surface 38 in the direction, while the second cam surface 34 on the rotating body 36 side meshes with the second fixed cam surface 40. In this state (see FIG. 10F), the first cam surface 32 on the rotating body 36 side and the first fixed cam surface 38 are out of phase with respect to one tooth of the cam in the rotation direction. Set in a relationship.

  Further, in a state where the pressure is released, the rotating body 36 is moved rearward so that the second cam surface 34 of the rotating body 36 is brought into contact with the second fixed cam surface 40 to be engaged. A biasing spring member 44 is provided.

  That is, the knock-type feeding container is formed in an annular shape inside the hollow portion of the screw body 28, and has a first cam surface 32 that meshes with the first fixed cam surface 38 at the front portion and a second portion. The rotating body 36 is formed in the rear part, and the rotating body 36 is provided behind the screw body 28 between the rotating body 36 and the screw body 28. A spring member 44 that biases the cam body 42, and a cam body 42 that includes a second fixed cam surface 40 that meshes with the second cam surface 34 of the rotating body 36 and is fixed to the rear portion of the screw body 28. The rotating body 36 is sandwiched from the front and rear by the screw body 28 and the cam body 42, and the rotating body 36 is biased toward the cam body 42 by the spring member 44.

  Then, the screw rod 30 having an outer diameter portion with a screw and having an irregular cross section is screwed into the screw portion 48 of the screw body 28, and the screw rod 30 and the rotary body 36 are formed by the irregular cross sectional hole 46 of the rotary body 36. Is movable in the axial direction and locked in the rotational direction, and a piston body 50 that is slidable with the shaft main body 10 and moves integrally with the screw rod 30 in the axial direction is fitted to the tip of the screw rod 30. .

  Further, the crown 12 is disposed at the rear portion of the rotating body 36 in a state where the crown 12 is rotatable and locked in the axial direction.

  As shown in FIG. 10, in a state where the first cam surface 32 of the rotating body 36 is engaged with the first fixed cam surface 38, the second cam surface 34 on the rotating body 36 side and the first cam surface The two fixed cam surfaces 40 are set to have a phase shifted relationship with respect to one tooth of the cam in the rotation direction, and the second cam surface 34 of the rotating body 36 meshes with the second fixed cam surface 40. In this state, the first cam surface 32 on the rotating body 36 side and the first fixed cam surface are set to have a phase shifted with respect to one tooth of the cam in the rotation direction.

  Next, the operation of the above-described embodiment will be described.

  In the knock type feeding container, the first cam surface 32 and the second cam surface 34 of the rotating body 36, the first fixed cam surface 38 of the screw body 28, and the second fixed cam surface 40 of the cam body 42. The outline of the mutual operation is shown in FIGS.

  In an initial state where the crown 12 shown in FIGS. 7 and 8 is not knocked (pressed), the rotating body 36 is pressed against the cam body 42 by the spring member 44 as shown in FIG. The second cam surface 34 and the second fixed cam surface 40 of the cam body 42 are in mesh with each other. In this state, the second cam surface 34 of the rotating body 36 is collinear with the first cam surface 32 in parallel to the axial direction, and the first fixed cam surface 38 of the screw body 28. Is a state in which the phase is shifted.

  Next, as shown in FIG. 9, the crown 12 is pressed in the axial direction to start knocking.

  When knocking is started, the state changes from FIG. That is, the crown 12 and the rotating body 36 start moving forward integrally while compressing the spring member 44, and the second cam surface 34 of the rotating body 36 moves from the second fixed cam surface 40 of the cam body 42. Go away.

  When knocking continues, as shown in FIG. 10B, the first cam surface 32 of the rotating body 36 comes into contact with the first fixed cam surface 38 of the screw body 28 in a state of being out of phase.

  As shown in FIG. 10 (c), when further pressed from this abutted state, the inclined surface 38 a 1 of the tooth 38 a of the first fixed cam surface 38 of the screw body 28 is moved to the first cam surface 32 of the rotating body 36. The inclined surface 32a1 of the tooth 32a slides, and the rotating body 36 reaches a position where the wall portion 32a2 of the tooth 32a comes into contact with the wall portion 38a2 of the tooth 38a of the first fixed cam surface 38 (shown in FIG. 10 (d)). Moves forward while rotating in a predetermined direction. At this time, since the rotating body 36 is rotatably attached to the crown 12, the crown 12 itself does not rotate.

  Along with the rotation of the rotator 36 at the time of knocking, a screw rod 30 that passes through the deformed cross-sectional hole 46 disposed at the tip of the rotator 36 and that is regulated in the rotation direction and freely movable in the axial direction is provided. It rotates integrally with the rotating body 36. Since the screw rod 30 is screwed with the screw body 28 and the screw portion 48, the screw rod 30 moves forward together with the piston body 50 and feeds the contents of the storage portion 24.

  The knock is released from this state.

  The spring member 44 disposed inside the screw body 28 pushes up the rotating body 36 to release the knocking. At this time, the second cam surface 34 of the rotating body 36 has a second cam surface 42 of the cam body 42. Since the arrangement pitch of the teeth 40a of the fixed cam 40 is out of phase, the second cam surface 34 starts to rotate and move backward in a predetermined rotational direction.

  When the knock release is further continued, as shown in FIG. 10 (e), the second cam surface 34 of the rotating body 36 comes into contact with the second fixed cam surface 40 of the cam body 42, and as shown in FIG. 10 (f). Further, the tooth 34a slope 34a1 of the second cam surface 34 of the rotating body 36 slides on the tooth 40a slope 40a1 of the second fixed cam surface 40 of the cam body 42 by the pushing force of the spring member 44. The wall portion 34a2 of the tooth 34a of the second cam surface 34 retreats while rotating to a position where the wall portion 40a2 of the tooth 40a of the second fixed cam surface 40 abuts. Also during this rotation, the screw rod 30 is rotated as described above to move forward with the piston body 50, and the contents are fed out.

  By repeating the above knocking operation, when the first cam surface and the first fixed cam surface are engaged with each other, knock-on occurs, the axial knocking operation and the releasing operation are converted into rotational force, and the screw rod 30 is rotated. Then, by pushing out the piston body 50, the contents can be fed out quantitatively.

  In addition, since the initial rotation depends on the strength of the rotational force depending on the pressing force, it is easy to deal with a case where a certain force or more is required for the initial rotation due to sticking of the piston body 50 or the like.

  Note that the knock-type feeding container of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

  In the embodiment, each component is preferably a resin molded product, and it is preferable that the shaft body is made of PP, the rotating body is POM, the cam body is ABS, the screw body is ABS, and the crown is made of PC.

  In the embodiment, the first cam surface 32 of the rotating body 36 and the first fixed cam surface 38 of the screw body 28, and the second cam surface 34 of the rotating body and the second fixed cam surface of the cam body 42 are used. Both of the 40 teeth formed a plurality of teeth at the same pitch, but the present invention is not limited to such a configuration. One of the first cam surface and the first fixed cam surface is formed with a plurality of first teeth having a slope inclined forward with respect to a predetermined rotation direction of the rotating body at the same pitch in the predetermined rotation direction. One of the cam surface and the second fixed cam surface is formed by forming a plurality of second teeth having inclined surfaces inclined rearward with respect to a predetermined rotation direction of the rotating body at the same pitch in the predetermined rotation direction. It is also within the scope of the present invention that either one of the opposing cam surfaces is formed with a plurality of teeth and the other is a cam having one or more teeth.

DESCRIPTION OF SYMBOLS 10 Shaft main body 10a Shaft main body front end part 10b Fitting part 10c Rib 12A Crown (1st Embodiment)
12 crown (second embodiment)
12a Locking portion 12b Crown crown portion 14 Joint 16 Pipe joint 18 Pipe 20 Lead shaft 22 Ear neck 24 Reservoir 24a Stirring ball 24b Seal ball 26 Cap 26a Inner cap 26b Inner cap rear urging spring 26c Stopper 28 Screw body ( Second embodiment)
28a Cylindrical portion 28b at the front end of the screw body Rear end portion 28c of the screw body Slit 28d Fitting portion 28e Groove portion 28f Rib 30 Screw rod 30a Male screw 30b Fitting portion 32 First cam surface 32a First cam surface teeth 32a1 Tooth slope of the first cam surface 32a2 Tooth wall portion 33 Step portion 34 Second cam surface 34a Second cam surface tooth 34a1 Second cam surface tooth slope 34a2 Second cam surface tooth Wall 36 of the rotating body 36a Fitting portion 38 First fixed cam surface 38a First fixed cam surface tooth 38a1 First fixed cam surface tooth slant 38a2 First fixed cam surface tooth wall 39 Step 40 Second fixed cam surface 40a Second fixed cam surface tooth 40a1 Second fixed cam surface tooth slant 40a2 Second fixed cam surface tooth wall 42 Cam body 42a Projection 42b Cam body Groove 44 spring member 46 irregular cross-section hole 48 Threaded portion 50 piston body 50a body 50b cylindrical portion 50c fitting portion 52 drive sleeve 54 threaded body of the body (first embodiment)
56 Ribs 58 Vertical ribs 60 Protrusions 62 Protrusions A Knock mechanism for converting pressing force into rotational force

Claims (1)

A shaft body that has a fluid reservoir inside and maintains the fluid discharge port sealed with a stopper before the start of use, and a shaft body that holds the applicator and uses a stopper before the start of use. The temporary joining state that is not directly joined to the shaft is maintained. On the other hand, when the stopper is removed at the start of use, it moves in the axial direction by the length of the stopper and enters the state of the main joining directly joined to the shaft body. After the shaft and the shaft disposed inside the shaft are brought into contact with the plug of the shaft main body by movement when the main shaft is joined to the shaft main body, the container is removed from the reservoir portion by removing the bottle. In a fluid applicator comprising a fluid conducting tube that enables the fluid to be supplied to
On the outer peripheral surface of the front end portion of the shaft body, there are formed an axial groove, an annular convex portion for fitting in the circumferential direction, and a projection portion that is temporarily joined to the front shaft,
An annular recess for fixing and fixing a cap is formed on the outer peripheral surface of the front shaft, and the inner peripheral surface of the front shaft is locked to the annular convex portion of the shaft main body and is finally joined. The rib having a substantially trapezoidal cross-sectional shape along the axial direction is formed to protrude inward over substantially the entire circumference,
A longitudinal longitudinal rib is formed on a part of the rib,
When the front shaft is temporarily joined to the front end portion of the shaft body, the vertical rib is fitted in the axial groove,
On the other hand, the rib on the inner peripheral surface of the front shaft is fitted to the rear portion of the convex portion when the stopper is removed and the front shaft moves during the main joining from the temporarily joined state to the front end of the shaft body. And the applicator characterized by carrying out this joining by the relative rotation of the said front shaft and the said shaft main body being controlled.

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