JP3221783B2 - Stick feeding tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a black or colored pencil,
The present invention relates to a rod feeding device capable of feeding a rod which gradually wears out by using a crayon core, an eraser, a cosmetic lipstick or an eyebrow core as necessary, and automatically discharging the remaining loss core.

[0002]

2. Description of the Related Art Conventionally, as this kind of rod-like material dispensing device, for example, a color pencil dispensing device of a color pencil as shown in FIG. 19 has been proposed. This writing instrument has a structure in which a mechanism composed of a spiral wire 3 attached to the tip of a rotary operation unit 2 and a color core holder 4 mounted in the wire 3 is rotatably fitted in the outer cylinder 1. Is adopted. Reference numeral 5 in the drawing is a leading tool that is screwed into a thread groove 1a formed on the inner peripheral surface of the leading end of the outer cylinder 1.

In this color core feeding device, when the rotary operation part 2 is rotated in one direction, the spiral wire 3 is also rotated, but the rotation preventing projection 4a of the color core holder 4 inserted in the spiral wire 3 is provided. Are locked in the guide grooves 1b formed in the inner wall of the outer cylinder 1 in the axial direction, so that the color core holder 4 is prevented from rotating. However, the color core holder 4 has three engaging members 4b, which are used to form the spiral wire 3b.
, And moves in the axial direction along the spiral wire 3. As a result, the color core attached to the tip of the color core holder 4 is gradually fed out from the opening at the tip of the leading tool 5 of the outer cylinder 1. When the rotary operation unit 2 is turned in the opposite direction, the color core is moved in the retreating direction.

[0004] In the conventional color-core feeding device configured as described above, the leading tool 5 is screwed with the guide groove 1b formed in the axial direction for the engagement of the detent 4a of the holder 4 for preventing rotation. Screw groove 1a and an annular groove 1c for allowing the annular ridge 2a of the rotary operation portion 2 to rotatably engage with the outer cylinder 1 must be formed on the inner peripheral surface of the outer cylinder 1. Was. For this reason, the structure becomes complicated and it takes time and effort to assemble. Further, since the spiral wire 3 is used, the spiral pitch tends to vary, and the operability of feeding out the rod-like material is not good. Further, when the rod-shaped material is consumed and becomes a loss core, there is a disadvantage that the loss core is buried in the holder 4 and is difficult to take out when replacing with a new core.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the conventional rod-like material dispensing tool, and has a simple structure, extremely easy assembling, good dispensing operability, and a good inside of the holder. The present invention is to provide a rod-like material feeding tool that can easily discharge the loss core remaining in the rod.

[0006]

According to the present invention, there is provided an outer cylinder having openings at both ends and having spiral guide means formed therein, and a rotatable interior of the outer cylinder. And an inner cylinder having an axial guide slit formed with a guide portion at the front end thereof, a leading tool provided at the tip of the inner cylinder, and a rotating operation provided at a rear end of the inner cylinder. and parts, a hollow holder with the outer peripheral portion of the slit engaging projections to and engaged with the guide slits is fitted in the inner cylindrical, the helical groove engagement protrusion to be engaged with the spiral groove of the outer tube A rod comprising a slider provided on an outer peripheral portion, an engaging means for engaging the slider with the holder, and a disengaging means for disengaging the holder and the slider at the disengaged position. In the article feeding tool , the preceding tool is
The rotation operation part is formed integrally with the tip of the inner cylinder,
The hollow holder is fitted to the rear end of the inner cylinder,
A polygonal hole at a position separated from the slider;
Has a rod section with a cross section similar to this polygonal hole,
And when the slider is incorporated in the holder,
The polygonal hole of the holder and the polygonal cross section of the slider
Are formed in directions where the sides and corners of each polygon do not match
At the same time, the protrusion of the holder is guided by the slit of the inner cylinder.
When it reaches the guide, the holder is rotated and both polygons
The sides and corners are matched and the slider and holder engage
Is released, whereby a rod-shaped object feeding tool is obtained.

[0007]

When the rear rotating operation portion is rotated in one direction, the projection of the slider fitted in the inner cylinder is guided along the spiral groove formed in the inner wall of the outer cylinder together with the rotation of the inner cylinder. Then, both the slider and the hollow rod-shaped object holder in which the slider is engaged, slide inside the inner cylinder and move forward, thereby pushing out the rod gradually little by little. Further, when the slider and the holder are advanced to reach the disengagement position, the engagement between the slider and the holder is released, and the slider advances in the holder to project and discharge the loss core remaining in the holder. .

[0008]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 3 show a first embodiment of the present invention, in which an outer cylinder 6 has openings at both ends thereof, and a spiral groove 7 is formed on the inner peripheral surface. The inner cylinder 8 is rotatably inserted from the rear end opening of the outer cylinder 6, and the distal end of the inner cylinder 8 in which the male screw portion 9 is formed projects from the distal opening of the outer cylinder 6. Note that a rotation operation unit 10 is integrally formed on the top of the inner cylinder 8, and a part of the rotation operation unit 10 extends forward of the outer cylinder 6 to form a clip 11.

Further, a guide slit 12 is formed in the inner cylinder 8 in the axial direction, and a leading portion of the guide slit 12 is bent to form a guide portion 13.
Is cut out to form a split groove 14. In addition, a holder 15 having a hollow structure for holding a rod-shaped object is provided in a slit 12 formed in the axial direction of the inner cylinder 8.
Mounted movably in the axial direction.

This point will be described in detail.
Is formed with a guide groove 17 having an axial direction and a curved portion 16 formed at a rear portion thereof, and an open end 18 extending from the rear end of the curved portion 16 to the outside. A slit engaging projection 19 is formed on the outer surface of the holder 15 so as to engage with the slit 12 formed in the inner cylinder 8.
The guide groove engaging projection 21 of the slider 20 is slidably engaged in the guide groove 17 of the holder 15. The slider 20 includes a front rod portion 22 and a rear slider body 23. The outer peripheral portion of the slider body 23 engages with the spiral groove 7 formed on the inner periphery of the outer cylinder 6. The spiral groove engaging projection 24 is provided. In the figure, reference numeral 25 denotes a leading tool in which a female screw portion 26 screwed to the male screw portion 9 at the tip of the inner cylinder 8 is formed inside.

[0011] The bar-shaped object feeding device having the above-mentioned structure is easily assembled in the following order. First, the open end 18 at the rear end of the guide groove 17 of the holder 15 is widened, and the rod portion 22 of the slider 20 is assembled into the holder 15. After that, the holder 15 and the slider 20 are pushed in and inserted into the slits 12 of the inner cylinder 8 using the split grooves 14 formed at the tip of the inner cylinder 8. Next, these mechanisms are inserted through the rear frontage of the outer cylinder 6, and the female thread 26 of the leading tool 25 is inserted into the male thread 9 formed at the tip of the inner cylinder 8 protruding from the tip opening of the outer cylinder 6. Screw and assemble.

Next, the operation of the rod-shaped object feeding device according to this embodiment will be described. At the time of use, in order to feed out the rod-shaped material, the user rotates and rotates in one direction by gripping the rotation operation unit 10 or the clip 11 provided at the rear end of the inner cylinder 8. Then, the projection 24 of the slider 20 according to the rotation of the inner cylinder 8 is guided in the spiral groove 7 formed on the inner wall of the outer tube 6, the curve portion of the guide groove 17 of the projection 21 of the slider 20 is holder 15 While being engaged with the holder 16, the holder 15 slides in the axial direction in the slit 12 formed in the inner cylinder 8 by the projection 19 to move forward, and gradually pushes the held bar-like object forward. After use, if the rotation operation unit 10 or the clip 11 is rotated in the opposite direction to the above,
The rod-like object is retracted and stored in the outer cylinder 6 by the operation reverse to the above.

Next, the operation of discharging the loss core, which is a feature of the present invention, will be described with reference to FIG. First, FIG. 3A shows a case where the holder 15 and the slider 20 are at the so-called uppermost point, that is, the slider 20 is located at the upper end of the slit 12 in the inner cylinder 8. At this time, the guide groove engaging projection 21 of the slider 20 is located at the curved portion 16 in the guide groove 17 of the holder 15, and the engagement relationship between the slider 20 and the holder 15 is maintained.

Subsequently, the rotary operation unit 10 is rotated, and the slider 20 and the holder 15 are moved forward.
When the engagement release position (b) is reached, the guide groove engagement projection 21 of the slider 20 is disengaged from the curved portion 16 of the guide groove 17 of the holder 15 and enters the linear guide groove 17 to release the engagement. Is done. At this time, the slit engagement projection 19 of the holder 15 moves to the curved guiding portion 13 formed at the tip of the linear guide slit 12 of the inner cylinder 8, and the slider 20 starts moving forward in the holder 15. .

Finally, when reaching the so-called lowermost point shown in FIG.
Penetrates through the holder 15, so that the rod-like object supported by the holder 15 is completely dropped and discharged.

FIGS. 4 to 13 are views showing a second embodiment of the present invention. In this embodiment, the leading tool 25 is formed integrally with the inner cylinder 8. On the other hand, a rear end of the inner cylinder 8 is open, and a rotation operation unit 101 having a shape described later is fitted to the open end. That is, the guide slit 12 is formed in the axial direction of the inner cylinder 8, and the leading end of the leading tool 25 side has the guiding slit 1 in which the guide slit 12 has a curved shape.
Three. The leg 102 of the operation unit 101 is inserted and fitted into the open end of the guide slit 12 to reinforce the rear end of the inner cylinder 8.

A hollow holder 151 having a slit engaging projection 191 is slidably engaged with the inner cylinder 8 by the projection 191 in the guide slit 12 of the inner cylinder 8. Note that the holder 151 has a regular hexagonal hole formed at a position separated from both ends, as is apparent from FIGS. 7 and 8. To be more specific, the hexagonal corner is formed in such a direction that the hexagonal corner is located at the center of the projection 191 formed on the outer peripheral portion in the radial direction.

Further, a slider 201 is slidably inserted into the holder 151. The slider 201 includes a front rod portion 221 and a rear slider body 231 having a spiral groove engaging projection 241.
The projection 241 is engaged with the spiral groove 7 formed on the inner periphery of the outer cylinder 6. Thus, the slider 201 is also free to slide in the axial direction. The slider 201 has a front rod portion 221 having a regular hexagonal cross section, as shown in FIGS. 9 and 12. More specifically, the hexagonal side in the radial direction is the slider 20.
The holder 151 is formed so as to have a direction different from that of the hexagonal hole of the holder 151 in a direction corresponding to the protrusion 241 formed on the outer peripheral portion of the holder 151.

Further, the rod-shaped object feeding device having the above structure can be easily assembled in the following order. First, the split groove 152 formed over the entire axial direction of the holder 151 is pushed and spread, and the hexagonal rod portion 221 at the tip of the slider 201 is expanded.
Into the hole at the rear of the holder 151. As described above, a hole 153 having a hexagonal cross section having a direction different from the hexagonal side of the rod portion 221 is formed at a position separated from both ends of the holder 151. Therefore, the rod portion 22
Since the tip of 1 does not coincide with the hexagonal hole 153 of the holder 151, it comes into contact with the periphery of the hole 153 and cannot advance further inside the hollow holder 151, and both are assembled in this state.

Next, the holder 151 and the slider 20
1 is inserted from the rear end opening of the inner cylinder 8. Then, the outer cylinder 6
At the rear end, the leg of the rotary operation unit 101 is pushed in accordance with the open end of the slit 12 of the inner cylinder 8 to attach and assemble the rotary operation member 101. Finally, the rod-shaped object may be loaded into the holder 151. However, since the holder 151 has the split groove 152 formed therein, even if the outer shape of the rod-shaped object varies, the split groove 152 can be easily and surely expanded if the inner diameter of the holder 151 is made slightly smaller in advance. It can be set on the rod holder 151.

The operation of this embodiment will be described below with reference to the operation explanatory diagram of FIG. First, when the operating portion 101 at the rear end of the rod-like material feeding tool to which the rod-like material is attached is rotated in advance, the slider 201, the holder 151, and the rod-like material have a spiral in which the protrusion 241 of the slider 201 is formed on the inner peripheral portion of the outer cylinder 6. motion in accordance with the groove 7, the sticks also is advanced as shown in Figure 13 (a) because the advancing guide slit 12 which protrusion 191 is formed in the inner cylinder 8 of the holder 151 by this movement.

As described above, the guide slit 12 is formed with the curved guiding portion 13 at the tip portion as described above, so that when the projection 191 of the holder 151 reaches the guiding portion 13, the holder 151 is rotated, and FIG. As shown in (b), the hexagonal hole 153 of the holder 151 and the hexagonal rod 221 of the slider 201 are aligned. Then, the engagement of the slider 201 which has been engaged with the holder 151 is released, and the rod portion 221 of the slider 201 passes through the inside of the holder 151, so that the rod-like material supported by the holder 151 is discharged.

FIGS. 14 to 18 are views showing a third embodiment. Unlike the above-described second embodiment, the leading tool 251 and the inner cylinder 6 are separately provided as in the first embodiment. Is formed. However, in this embodiment, a simple fitting structure is adopted because the structure of the leading tool 251 is special as described later without using the screwing structure in the first embodiment. As is clear from FIG. 14, the width of the guide slit 12 formed in the axial direction of the inner cylinder 8 is increased at one end at one end to form a wide guiding portion 131.

FIG. 15 is a sectional view of the leading tool 251.
An annular groove 252 for fitting with the ridge 81 of the inner cylinder 8 is formed in the rear inner periphery of the leading tool 251. Further, the leading tool 251 is provided with the leg 2 that fits into the guide slit 12 of the inner cylinder 8.
53 is provided. The leg portion 253 engages with the open end of the distal end of the guide slit 12 of the inner cylinder 8 to reinforce the structure of this portion and form a curved portion of the guide slit 12.

FIGS. 16 and 17 show a slider 202 and a slider body 232 at the rear of the slider 202.
Is cut to form an elastic deformation portion 233,
This portion is compressed and deformed when excessive stick pressure is applied to the rod during use. Then, since the slider 202 is structurally constituted by the elongated rod portion 221 and the wide slider body 232, the slider 202 is deformed in the inner cylinder 8 and is displaced as shown by a dotted line in FIG. The corner at the rear end of the main body 232 contacts the inner wall of the inner cylinder 8 to provide a stopper function. Since the basic operation of the core <br/> emissions that put in this embodiment is similar to the second embodiment and a description thereof will be omitted.

Further, in any of the above embodiments,
A number of guide slits 12 formed in the inner cylinder 8 may be formed, for example, two opposing slits on the inner cylinder 8, and all of these slits 12 may be closed if both ends in the axial direction are closed. There is an excellent effect in terms of strength. In this case, for example, since the split groove 14 in the first embodiment does not exist, the holder 15 and the slider 20 are not fitted from the front end of the inner cylinder, but from the lateral direction of the inner cylinder 8 provided with a plurality of guide slits 12. The guide slit 12 may be pushed open and fitted.

[0027]

Effects of the Invention The present invention, since the configuration of as described above, the structure is a very easy easy to assemble, good feeding operability and stick-shaped material propelling device to automatically ejected available-loss core Can be provided.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view of the rod-like object feeding device according to the first embodiment of the present invention, showing a state in which a holder and a slider are located at a front portion and a rear portion, respectively.

FIG. 3 is an operation explanatory view of the rod-shaped object feeding device according to the first embodiment of the present invention.

FIG. 4 is an exploded perspective view in which a part of a rod-shaped object feeding device according to a second embodiment of the present invention is omitted.

FIG. 5 is a cross-sectional view of a rod-shaped object feeding device according to a second embodiment of the present invention, showing a state in which a holder and a slider are located at a front portion and a rear portion, respectively.

FIG. 6 is a front view of an inner cylinder of the rod-shaped object feeding device of FIG. 4;

FIG. 7 is a cross-sectional view of a holder of the rod-shaped object feeding device of FIG. 4;

8 is a cross-sectional view of the holder of FIG. 7 taken along line AA.

FIG. 9 is a front view of a slider of the rod-shaped object feeding device of FIG. 4;

FIG. 10 is a left side view of the slider of FIG. 9;

11 is a sectional view of the slider of FIG. 9 taken along line BB.

FIG. 12 is a sectional view taken along line CC of the slider of FIG. 9;

FIG. 13 is a view for explaining the operation of the rod-shaped object feeding device according to the second embodiment of the present invention.

FIG. 14 is a front view of a tip of an inner cylinder of a rod-shaped object feeding device according to a third embodiment of the present invention.

FIG. 15 is a sectional view of a leading end of a rod-shaped object feeding device according to a third embodiment of the present invention.

FIG. 16 is a front view of a slider of a rod-shaped object feeding device according to a third embodiment of the present invention, and a sectional view taken along line DD of FIG.

17 is a partial sectional view of the slider of FIG. 16 and its EE
It is a line sectional view.

FIG. 18 is an explanatory diagram showing a deformed state of the slider of FIG. 16 at the time of excessive writing pressure.

FIG. 19 is an explanatory view in which a part of a conventional color pencil lead feeding tool is omitted.

[Explanation of symbols]

 Reference Signs List 6 outer cylinder 7 spiral groove 8 inner cylinder 10 rotation operation section 12 guide slit 13 guide section 15 holder 16 curved section 17 guide groove 19 slit engagement projection 20 slider 24 spiral groove engagement projection

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Jikken 39-9604 (JP, Y1) Jikken 47-30508 (JP, Y1) Jikgyo 3-56398 (JP, Y2) (58) Field (Int.Cl. ⁷ , DB name) B43K 21/10 A45D 40/06 B43K 23/016 B43L 19/00

Claims (7)

(57) [Claims] 1. A spiral guide having openings at both ends and having a spiral guide therein.
An outer cylinder having a step formed therein and a rotatably provided inside the outer cylinder.
Axial guide slide with a guide portion formed at its tip
Inner cylinder having a socket, and a tip provided at the tip of the inner cylinder
A rotary operation unit provided at the rear end of the inner cylinder;
A slit fitted in the cylinder and engaged with the guide slit.
A hollow holder provided with an engagement projection on an outer peripheral portion;
With a spiral groove engaging projection on the outer peripheral portion for engaging with the spiral groove of
Engagement between the rider, the slider and the holder
Means and the slide in the disengaged position.
And a disengagement means for disengaging the rod.
In the article feeding tool, the leading tool is formed integrally with a front end of the inner cylinder, the rotation operation portion is fitted to a rear end of the inner cylinder, and the hollow holder is separated from the rear end. The slider has a rod portion having a cross section similar to that of the polygonal hole, and when the slider is incorporated in the holder, the polygonal hole of the holder is provided. And the polygonal cross section of the slider is formed in a direction in which the sides and angles of the respective polygons do not coincide with each other, and when the projection of the holder reaches the guide portion of the slit of the inner cylinder, the holder is rotated. A bar-shaped object dispensing tool wherein the sides and corners of both polygons are made coincident with each other to disengage the slider from the holder. 2. A rear end of the guide slit of the inner cylinder has a opened open end, according to claim 1, wherein the rotating operation unit is characterized by including a leg portion that mates with the open end Rod feeder. The method according to claim 3, wherein said holder, stick-shaped material propelling device of claim 1, split groove for insertion of the slider is characterized by comprising formed in the axial direction. 4. A spiral guide having openings at both ends and having a spiral guide therein.
An outer cylinder having a step formed therein and a rotatably provided inside the outer cylinder.
Axial guide slide with a guide portion formed at its tip
Inner cylinder having a socket, and a tip provided at the tip of the inner cylinder
A rotary operation unit provided at the rear end of the inner cylinder;
A slit fitted in the cylinder and engaged with the guide slit.
A hollow holder provided with an engagement projection on an outer peripheral portion;
With a spiral groove engaging projection on the outer peripheral portion for engaging with the spiral groove of
Engagement between the rider, the slider and the holder
Means and said holder in the disengaged position and the slide Lee
And a disengagement means for disengaging the rod.
In the article feeding tool, the rotation operation portion is provided integrally with a rear end of the inner cylinder, the hollow holder has a polygonal hole at a position separated from the rear end, and the slider has It has a rod part with a cross section similar to this polygonal hole,
And when the slider is incorporated in the holder, the polygonal hole of the holder and the polygonal cross section of the slider are formed so that the sides and angles of the respective polygons do not coincide with each other. projections you characterized in that the engagement of the slider and the holder the holder is caused to coincide with the sides and corners of being rotated both polygons reaches the induction portion of the slit of the inner tube is released rod-shaped material propelling device. 5. The stick-shaped material propelling device according to claim 4, characterized in that by forming a wide portion leading portion is wider on one side of the slit. 6. The rod-shaped object feeding device according to claim 4 , wherein the front tool has a slit reinforcing leg extending rearward from a rear end. 7. A rod-shaped object feeding device according to claim 4 , wherein a rear portion of said slider is formed as an elastically deformable portion which is deformed against excessive rearward pressure.