JP2001046146A - Bar-shaped object pushing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bar-shaped object pushing tool which is easy to assemble although having cassette type functions, which has no troubles with its actuating property since a very slender bar-shaped object suited for drawing fine lines during rotating operations advances straight without rotating, which has a guide pipe provided between the bar-shaped object and a front shaft to make a bar-shaped object receiving part very thin, which prevents damage to the bar-shaped object by the impact of drop or the like by allowing only little clearance between the outer wall of the bar- shaped object and the inner wall of the guide pipe, and which has good operability. SOLUTION: This pushing tool has a front shaft 1 provided rotatably with respect to a rear shaft 2 and formed with a rotation stopping means 1b thereinside, and an intermediate shaft 3 provided in such a manner as to have its rear projected into the end shaft 1 and to rotate along with the rear shaft 2 and having a spiral means 3a formed on its inner periphery. The pushing tool also has a guide pipe 4 provided inside the intermediate shaft 3 and having formed thereon a guide groove 4c along the longitudinal direction of its rear and provided with an engagement means which engages the rotation stopping means 1b of the end shaft 1 to lock rotation, and a slider 5 being slidable within the guide pipe 4 but having its rotation locked and having a bar-shaped object receiving part 5a at its tip.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rod-shaped material dispensing tool for linearly dispensing rod-shaped cosmetics such as lipstick, eyebrow, eyeliner, etc., rod-shaped erasers, color cores for pencils, etc., by rotating them.

[0002]

2. Description of the Related Art Conventionally, as this kind of rod-like material feeding tool, for example, the one described in JP-A-10-77075 has been proposed. That is, according to this conventional example,
The rod holding part of the rod feeder consisting of the front shaft and the rear shaft

[0003]

However, in such a conventional rod feeding device, the slider is advanced while rotating along the spiral groove on the inner side of the front shaft by the rotary feeding operation, and the rod is also fed while rotating. Had been. That is, in this conventional example, the slider holding portion is engaged with the spiral groove in the front shaft rotatable with the rear shaft through the slit of the center shaft that rotates integrally with the rear shaft. When the shaft is operated to rotate, the slider is configured to advance while rotating about the leading shaft.

[0004] By the way, particularly in the case of a bar-shaped cosmetic such as an eyeliner, a very thin bar-shaped material is required in order to draw a delicate line that is soft and has good touch. However, since a commercially available product having a diameter of 2 to 3 mm is used, if a very fine bar having a diameter of about 1.2 mm is used as a conventional product, the bar may be dropped due to some impact. There was a risk of breakage or damage due to the inner wall of the front shaft. That is, since the rattle of the rod-shaped object is large due to the clearance with the inner wall such as the tip shaft, there is a possibility that the stored rod-shaped object may be broken or damaged by a slight impact. Further, when the operation is performed beyond the limit of the rotation operation necessary for the moving range of the slider, there is a possibility that the component may be damaged by the excessive rotation operation.

Therefore, despite the fact that the present invention has such a cassette-type function, it is easy to assemble and at the time of rotating operation, even if an extremely fine rod-shaped object suitable for drawing a thin line is used, the rod-shaped object can be formed. Since it travels straight without rotating, there is no problem in its operability, and a guide pipe is provided between the rod and the front shaft to make the rod receiving part extremely thin, and the outer wall of the rod and the inner wall of the guide pipe are connected. It is an object of the present invention to provide a rod-like material dispensing tool that has a very small clearance and prevents breakage of the rod-like material due to an impact such as dropping and has good dispensing operability.

[0006] Further, the conventional rod feeding device has a problem that, particularly when a fine core is attached, the receiving portion where the fine core is sandwiched by an impact due to dropping or the like is easily broken. Therefore, the present invention provides a buffering function by forming the rod-shaped object receiving portion with a metal cylinder having a slit so that the rod-shaped object attached to the receiving portion of the slider is not easily damaged even if it receives an impact during the feeding process. It is an object of the present invention to provide a rod-like material dispensing tool that is not particularly likely to break even with an extremely fine core.

It is still another object of the present invention to provide a rod-like material dispensing tool having improved dispensing operability in which parts of the rod-like material dispensing tool are not damaged by an excessive rotation operation beyond a limit. I do.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a rod feeder provided rotatably with respect to a rear shaft and having a detent means formed therein, and a rear portion protruding from the front shaft. A central shaft which rotates together with the rear shaft and has a spiral means formed on the inner periphery thereof, a guide groove formed inside the central shaft in a longitudinal direction of a rear portion, and engaged with the detent means of the front shaft on the outside. The guide pipe is provided with an engagement means whose rotation is locked and a slider slidable in this guide pipe but locked in rotation and having a rod-shaped object receiving portion at the tip end.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a rod-shaped object feeding device according to an embodiment of the present invention. These figures show an example in which a bar-shaped object feeding device for feeding out a bar-shaped cosmetic such as an eyeliner according to an embodiment of the present invention in a straight line by a rotation operation, particularly a bar-shaped object having a circular cross section, is used. FIG. 1 is a vertical cross-sectional view of a rod-like material feeding device showing a state in which the rod-like material is stored. This rod-shaped object feeding device is composed of an exterior member including a front shaft 1 having an opening 1a at the tip thereof for feeding the rod-shaped object, and a bottomed rear shaft 2 rotatably provided with respect to the front shaft 1. It is formed in a shape.

First, FIGS. 2 to 5 show the structure of the front shaft 1.
The front portion of the front shaft 1 has a tapered portion whose diameter gradually decreases toward the opening 1a at the tip, and a detent member having a hexagonal cross section as shown in FIG. Is formed. That is, the polygonal portion 1b is engaged with the polygonal outer wall 4a at the tip of the guide pipe 4 to be described later to prevent the slider 5 from rotating.
Are provided in the longitudinal direction of the inner periphery of the distal end portion. An inclined surface 1c is formed following the rear end of the polygonal inner wall 1b, which is a detent means. The detent means may be a combination of a key and a key groove in addition to the combination of the polygon inside and the wall.

A fitting recess 1 is provided at the center of the shaft 2.
As shown in FIG. 5, a pair of mounting fitting projections 1e are formed on the outer side of the rear portion of the front shaft 1 so as to be rotatable with respect to the rear shaft 2 so as to facilitate attachment and detachment. ing. In addition, the front shaft 1 is moved to the rear shaft 2 by the fitting protrusion 1e.
, It is easy to rotate each other, and it is easy to attach / detach to / from the rear shaft 2. An annular groove 1f to which an O-ring 6 described later is attached is formed at a rear position slightly separated from the fitting recess 1d. Further, a locking window 1g for facilitating assembly is formed near the rear end separated from the annular groove 1f. Reference numeral 1h in the figure denotes an annular groove formed on the inner periphery of the rear part of the front shaft 1.

Next, the rear shaft 2 in which the rear portion of the front shaft 1 is rotatably assembled will be described. FIG. 6 is an enlarged longitudinal sectional view of the rear shaft 2, and FIG. 7 is an enlarged sectional view taken along the line CC. In FIG. 6, a fitting groove 2a is formed on the inner periphery of the front end of the rear shaft 2 with the rear end and bottom. And, six engaging ribs 2b (FIG. 7) gradually lowering rearward are provided at equal intervals on the inner side of the rear portion. Incidentally, these engaging ribs 2b can be used if the strength is permissible.
If the height of b is made as low as possible, the thickness of the rear shaft 2 is less uneven, so that sink marks and the like are less likely to occur.

FIGS. 8 to 10 show the configuration of a cylindrical center shaft 3 which is located inside the front end of the rear shaft 2 and which rotates integrally with the rear shaft 2. As shown in FIGS. The rear end 3 is provided to be locked with the rear shaft 2. First, a spiral groove 3a as a spiral means is formed on the inner periphery of the center shaft 3.
A pair of locking projections 3b are provided on the outer side of the rear end of the center shaft 3 so as to engage with the above-described engagement ribs 2b of the rear shaft 2 and function as rotation stoppers. Note that this locking projection 3
As for b, the guide part 3c is formed in the end part as shown in FIG. When the center shaft 3 is incorporated into the rear shaft 2, the guide protrusion 3 c is provided with the locking projections 3 b that are connected to the six engagement ribs 2
It has an action of inducing insertion so as to be easily inserted between b.

That is, an annular projection 3d is provided integrally with the rear portion of the locking projection 3b. An annular locking portion 3e is provided at a predetermined distance from the annular projection 3d. On the front surface of 3e, a forwardly inclined portion is formed. The annular projection 3d and the annular locking portion 3e are assembled so as to sandwich a rear portion of the window 1g formed in the front shaft 1 as shown in FIG. Then, once assembled, the front shaft 1 and the center shaft 3 are locked by the annular locking portion 3e at the rear end edge of the window hole 1g, so that even if the front shaft 1 is pulled, the center shaft 3 does not come off. In FIG. 9, reference numeral 3f denotes a rear end opening of the center shaft 3.

FIGS. 11 to 13 show the structure of a hollow guide pipe 4 having a hexagonal outer wall 4a (engaging means) formed on the outer periphery at the tip end as shown in FIG. ing. An annular stopper 4b is formed on the outer periphery of the center, and a pair of elongated guide grooves 4c are formed in the longitudinal direction behind the annular stopper 4b. In the drawing, reference numeral 4d denotes a rear end of the guide pipe 4.

FIGS. 14 to 17 show a slider 5 or a part thereof. The slider 5 is a metal (brass) cylindrical body which forms a rod-shaped slider body 5b made of synthetic resin and a receiving portion 5a. And a rod-shaped receiving portion 5a attached to the tip of the slider body 5b. That is, the tip end of the slider body 5b has a hemispherical portion 5ba, and a caulking groove 5bb is formed in a portion separated from the hemispherical portion 5ba. In addition, since the hemispherical surface portion 5ba is provided at the tip of the slider body 5b, there is an advantage that a round and bent metal cylindrical body can be easily attached. Further, a step 5bc is formed behind the caulking groove 5bb. Note that the tip of the slider body 5b is not necessarily formed in the hemispherical portion 5ba, but may be chamfered in a planar shape.

The rear end of the metal cylinder for the receiving portion 5a is located on the step 5bc, and the metal cylinder corresponding to the caulking groove 5bb can be easily attached by caulking. The cross section of the metal cylinder is C-shaped (FIG. 16). As an optimal example, the thickness of the metal cylinder is 0.1 mm, and the gap formed over the entire length of the cylinder having a C-shaped cross section is 0.2 mm. In this manner, the receiving portion 5a for mounting a rod having a diameter of 1.2 mm.
As a result, the cross section can be formed into an ideal perfect circle, which is advantageous from the viewpoint of working deformation and preventing rattling. In other words, roundness is maintained by making the gap 5a approximately 8 to 10 times larger than the outer diameter of the rod-shaped object in consideration of the wall thickness. Usually, the thickness of the cylindrical body is approximately 0.05 to 0.25 mm, and the gap formed in the longitudinal direction of the cylindrical body having the C-shaped cross section may be approximately 0.1 to 0.3 mm. .

When the rod-shaped object is attached to the receiving portion 5a made of such a metal cylinder, the gap 5aa
Therefore, there is an effect that the receiving portion 5a of the metal cylindrical body can be expanded and the rod-shaped object can be easily attached. In addition, even when a fine core is loaded, the rod-shaped object is securely held by the receiving portion 5a after being attached, and the rod-shaped object is not easily broken even when subjected to an impact due to dropping. Ingenuity has been made for. That is, the rod-shaped object receiving portion 5a
When a side impact force is applied in a state in which the rod-shaped object is loaded in the space, a clearance 5aa is formed in the peripheral wall of the rod-shaped object receiving portion 5a in the longitudinal direction, so that the lateral force acts to escape. Thus, there is also an advantage that breakage of the rod is prevented.

Further, split grooves 5c are formed in the longitudinal direction of the rear end of the slider 5 so as to face each other, and a pair of screw pieces 5d projecting laterally are provided between the split grooves 5c. ing. Further, a slider 5 that holds a rod-shaped object having a circular cross section and slides inside the central shaft 3 is provided in the central shaft 3.

More specifically, a pair of engagement screw pieces 5d formed in accordance with the inclination of the spiral groove 3a of the center shaft 3 are integrally provided at the rear end of the slider 5. Therefore,
The slider 5 is set on the center shaft 3 and the front shaft 1 or the rear shaft 2
Is rotated, the engagement screw 5d engages in the spiral groove 3a of the center shaft 3 via the guide groove 4c of the guide pipe 4, and acts to rotate the slider 5 and slide back and forth. However, the polygonal outer wall 4a of the guide pipe 4 with which the screw piece 5d of the slider 5 is engaged is the polygonal inner wall 1b of the leading axis.
And slides back and forth but is prevented from rotating, so that the rear portion of the slider 5 slides back and forth without rotating in the center shaft 3.

That is, the rear end of the slider 5 is integrally provided with a pair of engagement screw pieces 5d formed in accordance with the inclination of the spiral groove 3a of the center shaft 3. Therefore, the engagement screw 5d
Is the guide groove 4 of the guide pipe 4 engaged with the front shaft 1.
When the slider 5 is set on the center shaft and the front shaft 1 or the rear shaft 2 is rotated, the slider 5 slides back and forth without rotating inside the center shaft 3.

As described above, the slider 5 is formed with a pair of split grooves 5c opposed from the rear end.
When the slider 5 is at the uppermost position or at the lowermost position, the split groove 5c is used when the rotation is further forced.
There is an advantage that the slider 5 idles due to the inward bending of c.

In FIG. 1, reference numeral 6 denotes an O-ring made of an elastic material such as rubber.
, There is an advantage in that the front shaft 1 and the rear shaft 2 have a solid feeling and a luxury feeling in the mutual rotation.

In order to better understand the configuration of the rod-shaped object feeding device according to the above embodiment, the assembling procedure will be described as follows. That is, first, the slider 5 is connected to the guide pipe 4.
The first assembly is completed by inserting the assembly into the spiral groove 3a of the center shaft 3 by inserting the assembly into the guide groove 4c.

Next, the assembled assembly of the central shaft 3, the guide pipe 4 and the slider 5 is inserted into the front shaft 1. That is, the annular projection 3d and the annular locking portion 3e of the center shaft 3 are assembled so as to sandwich the rear portion of the window 1g formed in the front shaft 1. Then, once assembled, the front shaft 1 and the center shaft 3 are locked by the annular locking portion 3e at the rear end edge of the window hole 1g, so that even if the front shaft 1 is pulled, the center shaft 3 does not come off. The center shaft 3 and the slider 5 are aligned with the polygonal outer wall 4a of the guide pipe 4 at the front end of the polygonal inner wall 1b.
When they are completely pushed in, they are engaged with each other by the engagement structure and rotate together.

Thereafter, the O-ring 5 is mounted on the annular recess 1f of the front shaft 1, and the rear shaft 2 is fitted on the front shaft 1 while covering the front shaft 1 constituting the front shaft assembly, thereby completing the assembly. In this case, when the guiding portion 3c at the end of the engaging protrusion 3b of the center shaft constituting the leading shaft assembly is incorporated into the rear shaft 2, the engaging protrusion 3
b has an action of guiding the rear shaft 2 to be easily inserted between the six engagement ribs 2b. The assembling work including the mounting of the rod-shaped object is performed in a well-managed factory such as a clean room or the like, and is extremely clean and safe because ordinary users cannot assemble without permission.

Hereinafter, the operation of the rod-shaped object feeding device according to the embodiment of the present invention will be described. First, a rod-shaped object is stored in the tip shaft 1 when used (the state shown in FIG. 1).
Then, the front shaft 1 is rotated with the rear shaft 2. Then, the rotation of the center shaft 3 with respect to the rear shaft 2 is locked by the engagement between the engagement ribs 2b and the engagement protrusions 3b. Since the screw 5d of the slider 5 is guided by the spiral groove 3a of the center shaft 3 and penetrates and engages in the guide groove 4c of the guide pipe 4 which rotates integrally with the front shaft, the guide groove is formed. 4c and slides back and forth.

In this case, the leading edge of the center shaft 3 does not move forward because it is locked by a stopper 4b provided on the intermediate outer periphery of the guide pipe 4, and as a result, the rod-like object held by the slider 5 is moved forward by the front shaft. It can be used by protruding from the opening 1a at one end.

The slider 5 has a split groove 5c at its rear end.
Is formed, even if the front shaft 1 is rotated too much with respect to the rear shaft 2 more than necessary after the slider 5 is moved to the front end or the rearmost end, the slider 5 idles and is slid back and forth more than necessary. There is no.

When the rod-shaped material becomes unusable due to wear due to use, the front shaft 1, the center shaft 3, the guide pipe 4
Since the slider 5 (bar-like material holding mechanism) to which the remaining bar-like material is attached is entirely unitized, the entirety is detached from the rear shaft 2 and a new rod-like material cassette is mounted on the rear shaft 2 from the front. I just need.

That is, when the front shaft 1 and the rear shaft 2 are respectively held in different hands and pulled in different directions, the fitting projection 1e and the fitting groove which constitute the means for fitting the front shaft 1 and the rear shaft 2 are formed. 2a is disengaged. A window 1g is formed in the side wall of the front shaft 1, and an annular projection 3d locked in the window 1g is provided on the outer wall of the center shaft 3. Therefore, even if the front shaft 1 is pulled as described above, the front shaft 1 does not come off from the center shaft 3. As a result, the rod-shaped object holding mechanisms other than the rear shaft 2, that is, the front shaft 1, the center shaft 3, the guide pipe 4, and the slider 5 can all be integrally removed together as a cassette. Therefore, in this case, there is an advantage that the bar can be replaced with a new one without directly touching a stick such as a cosmetic.

FIG. 17 is a perspective view showing a modification of the receiving portion 5a shown in FIG. 16. The setting to the slider body 5b is performed by press-fitting, caulking after setting, or circumferential caulking. In this case, the cylinder constituting the rod-shaped object receiving portion 5a is formed by cutting a metal pipe in advance, and thereafter, a plurality of slits 5ab (gap) are formed from the leading edge toward the rear. Therefore, also in this modified example, a sufficient shock-absorbing function can be exerted against an impact when the rod-shaped object is set in the same manner.

Also, in the case of the receiving portion 5a shown in FIG. 16, an example has been described in which only a cylindrical body is formed in advance from a single metal sheet, and is set at the tip of the slider body 5b and then caulked. If the metal sheet is cut out and ribs are formed (inward protrusions) at the same time, the sheet can be attached only by pushing it into the slider body 5b, so that time is saved. In this case, the upper and lower ends of the metal sheet can be chamfered in advance. In this manner, if the ribs are formed in advance and chamfered, it is possible to surely remove the burrs, burrs and the like at the corners which hinder the operation of the slider in the state of the metal sheet.

[0034]

As described above, the structure of the rod feeding device according to the present invention is as described above. Therefore, even when an extremely thin rod is used, the rod is protected by the extremely thin receiving portion, and the inner wall of the guide pipe is formed. There is little clearance between the rod and the outer wall of the rod, and there is no backlash of the rod, so that there is no danger of the rod being broken or damaged by an impact due to a drop or the like, and there is an effect of improving the operability of the rod.

Further, according to the present invention, the rod-like object loaded in the receiving portion of the slider does not rotate despite the rotation operation of the front shaft, but proceeds straight in the front shaft, so that the extremely thin rod-like material and the cross-section of the cross-section which are easily broken. It is most suitable for non-circular rods, and has the effect of facilitating assembling and preventing parts from being damaged due to idling of the slider even by excessive rotation beyond the limit.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view in which a part of a rod-shaped object feeding device according to an embodiment of the present invention is omitted.

FIG. 2 is an enlarged front view of a front shaft.

FIG. 3 is a longitudinal sectional view of a front shaft of FIG. 2;

FIG. 4 is a sectional view taken along the line AA of the front axis of FIG. 2;

FIG. 5 is a sectional view taken along the line BB of the front axis of FIG. 2;

FIG. 6 is an enlarged vertical sectional view of a rear shaft.

FIG. 7 is an enlarged sectional view taken along the line CC of the rear axis of FIG. 6;

FIG. 8 is an enlarged front view of a center shaft.

FIG. 9 is a sectional view of the center axis of FIG. 8;

FIG. 10 is an enlarged sectional view taken along line DD of the center axis in FIG. 8;

FIG. 11 is an enlarged front view of a guide pipe.

FIG. 12 is a longitudinal sectional view of the guide pipe of FIG. 11;

FIG. 13 is a cross-sectional view of the guide pipe of FIG. 11 taken along line EE.

FIG. 14 is an enlarged front view of the receiving portion of the slider taken as a virtual line.

FIG. 15 is an enlarged side view of the slider.

FIG. 16 is an enlarged perspective view of a receiving portion of the slider.

FIG. 17 is a perspective view showing a modification of the receiving portion before attachment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front shaft 1a Opening 1b Polygonal inner wall (rotation prevention means) 1c Bevel 1d Fitting recess 1e Fitting protrusion 1f Annular recess 1g Window hole 2 Rear shaft 2a Fitting groove 2b Engaging rib 3 Center shaft 3a Spiral groove (spiral means) 3b locking projection 3c guiding portion 3d annular projection 3e annular locking portion 3f rear end opening 4 guide pipe 4a polygonal outer wall (engaging means) 4b stopper 4c guide groove 4d rear end 5 slider 5a receiving portion 5aa gap 5ab Slit 5ac Rib 5b Slider body 5ba Semi-spherical part 5bb Caulking groove 5c Split groove 5d Screw piece 6 O-ring

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65D 83/00 B65D 83/00 C (72) Inventor Yoshihide Mitani 138 Kawarai, Kawagoe-shi, Saitama F-term (reference) in the Suzukawagoe factory 2C353 HC02 HG01 HJ02 HJ05 MA03 MA06 MC09 3E014 AC05

Claims (8)

[Claims] 1. A front shaft provided rotatably with respect to a rear shaft and having a detent means formed inside, a rear portion protruding from the front shaft, rotating with the rear shaft, and a spiral means on an inner periphery. A guide provided with a formed center shaft and a guide groove formed inside the center shaft and formed with a guide groove in a longitudinal direction of a rear portion, and provided with an engagement unit on the outside which is engaged with the rotation preventing unit of the front shaft to lock rotation. A rod feeding device comprising a pipe and a slider slidable in the guide pipe but locked in rotation and having a rod receiving portion at a tip end thereof. 2. The rod-shaped object feeding device according to claim 1, wherein an engagement projection provided outside a rear end of the slider is engaged with the spiral means of the center shaft through a guide groove of the guide pipe. 3. The rod-shaped object feeding device according to claim 1, wherein the rod-shaped object receiving portion of the slider is a cylindrical body attached to a mounting portion at a tip end of the slider body. 4. The cylindrical body has a thickness of about 0.05 to 0.25.
The rod-shaped object feeding device according to claim 3, wherein a gap formed in the longitudinal direction of the cylindrical body having a C-shaped cross section is approximately 0.1 to 0.3 mm. 5. The rod-shaped object feeding device according to claim 1, wherein the detent means of the front shaft is a polygon inner wall, and the engagement means of the guide pipe is a polygon outer wall corresponding to the polygon inner wall. 6. The rod-shaped material dispensing tool according to claim 1, wherein a locking means is constituted by a locking projection provided outside the center shaft and a plurality of locking ribs provided inside the rear shaft. . 7. The rod-shaped feeding device according to claim 1, wherein a split groove is formed at a rear end portion of the slider so that the slider idles at an uppermost position and a lowermost position. 8. The rod-shaped material feeding device according to claim 1, wherein a window hole is formed in a side wall of the front shaft, and a locking projection locked in the window hole is provided on an outer wall of the center shaft.