JP2607654Y2 - Stick feeding tool - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial applications] This invention is based on the black and color pencils of pencils,
The present invention relates to a rod-shaped material dispensing device capable of dispensing a rod-shaped material gradually consumed by use of a crayon core, an eraser, a cosmetic lipstick or an eyebrow core as needed, and automatically discharging the remaining loss core.

[0002]

2. Description of the Related Art Conventionally, as this kind of rod-shaped material feeding device, for example, a color pencil feeding device of a color pencil as shown in FIG. 20 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]

The present invention has solved the above-mentioned drawbacks of the conventional rod feeding device, which has a simple structure and is extremely easy to assemble. Even if you operate it, it is possible to carry out operation,
An object of the present invention is to provide a rod-like material feeding device capable of easily discharging a loss core remaining in a holder.

[0006]

In order to achieve the above object, according to the present invention, an opening is provided at both ends and a screw is internally provided.
An outer cylinder with a swivel guide and a rotatable interior of this outer cylinder
In the axial direction with a guide portion formed at its tip.
Provided on the inner cylinder with a guide slit, and on the outer cylinder and the inner cylinder
The inner cylinder is rotatable with respect to the outer cylinder.
Locking means for locking, and a rotary operation provided at the rear end of the inner cylinder.
Operating means, and the guide slit fitted in the inner cylinder and
Hollow rod-shaped holder with a slit engaging projection for engaging with
And slidably inserted into the rod holder and
A first engaging means for engaging the spiral guide means of the outer cylinder;
Slider to prevent sliding of the slider.
Second engagement means for engaging a rider with the rod holder
And, at the disengagement position,
And engagement release means for releasing the engagement with the
In the rod-shaped material feeding tool, the rod-shaped material holder has a polygonal hole at a position separated from a rear end, and the slider has a rod portion having a cross section similar to the polygonal hole,
And when the slider is incorporated into the stick-shaped piece holder, formed to the orientation and cross-section and the polygonal shape of the sides of each corner of the polygonal shape of the polygonal shape of the hole and the slider of the stick-shaped piece holder does not match together they are, the sticks projections the slider and sticks the sticks holder reaches the introducing portion is made to match the sides and corners of being rotated both polygonal shape of the guide slit of the inner sleeve of the holder stick-shaped material propelling tool engagement holder Ru is canceled is obtained.

[0007]

When the rear rotation operation portion is rotated in one direction, the projection of the slider fitted in the inner cylinder is guided along the spiral groove formed on the inner circumference of the outer cylinder together with the rotation of the inner cylinder. Then, the slider and the hollow rod-shaped object holder in which the slider is engaged are slid inside the inner cylinder and moved forward, whereby the rod-shaped object is gradually pushed forward. Further, when the slider and the holder are advanced and reach the disengagement position, the engagement between the slider and the holder is released, and only the slider advances in the holder and projects the loss core remaining in the holder to automatically move the slider. Let it be discharged.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment 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.
The outer cylinder 6 has a leading part 6a formed integrally therewith, has a front end having a small hole 6b for feeding out a rod-like object described later, and a rear end of the outer cylinder 6. Has an opening formed therein. A spiral groove 7 is formed on the inner peripheral surface of the outer cylinder 6, and a loose fitting groove 6c is formed on the entire inner periphery of the rear part. . The inner cylinder 8 is rotatably inserted into the outer cylinder 6. More specifically, this inner cylinder 8
A loose fitting projection 8a is formed at a position corresponding to the loose fitting groove 6c of the outer cylinder 6 on the outer periphery of the rear part. A large-diameter rotary operation unit 9 is integrally formed at the rear end of the inner cylinder 8, and a stopper step 9 is provided at the front edge of the rotary operation unit 9.
a is formed. Due to such a configuration, when the inner cylinder 8 is set on the outer cylinder 6, the loose fitting projection 8a is rotatably fitted in the loose fitting groove 6c, but is mounted in the axially locked state.

Further, a guide slit 10 is formed in the inner cylinder 8 in the axial direction, and a leading portion of the guide slit 10 is bent to form a guide portion 10a.
The leading end of Oa is cut out to form a split groove 10b. Also, a slit 10 formed in the axial direction of the inner cylinder 8
Inside, a rod-like material holder 11 having a hollow structure for holding the rod-like material is mounted slidably in the axial direction.

This point will be described in detail.
A guide groove 12 having a curved portion 12a formed at the rear portion is formed in the axial direction, and an open portion 12b extending from the rear end of the curved portion 12a to the outside is formed. This holder 1
A slit engaging projection 11a is formed on the outer side of 1 so as to engage with a guide slit 10 formed in the inner cylinder 8. A guide groove engaging projection 13a of the slider 13 is slidably engaged in the guide groove 12 of the holder 11. The slider 13 has a front elongated rod portion.
13b and a slider main body 13c having a large diameter at the rear portion. On the outside of the slider main body 13c, a spiral groove engaging projection 13d that engages with the spiral groove 7 formed on the inner periphery of the outer cylinder 6 is provided. Is provided.

[0011] The bar-shaped object feeding device having the above-mentioned structure is easily assembled in the following order. First, the open portion 12b at the rear end of the guide groove 12 of the holder 11 is expanded, and the rod portion 13b having the guide groove engagement projection 13a of the slider 13 is attached to the holder 1.
Incorporate within 1. After that, the holder 11 and the slider 13 are pushed in and inserted into the guide slits 10 of the inner cylinder 8 using the split grooves 10b formed at the tip of the inner cylinder 8. Next, these mechanisms are inserted through the rear opening of the outer cylinder 6, and the loose fitting grooves 6 formed on the inner periphery of the rear of the outer cylinder 6 are formed.
The loose fitting projection 8a is rotatably engaged with c to 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 pay out the rod-like material, one part of the outer cylinder 6 including the leading part is grasped with one hand, and the rotating operation part 9 is grasped in one direction with the other hand. Rotate. Then, according to the rotation of the inner cylinder 8, the engagement projection 13 d of the slider 13 is guided by the spiral groove 7 formed on the inner periphery of the outer cylinder 6, and the guide groove projection 13 a of the slider 13 is moved to the guide groove 12 of the holder 11. Curved portion 12a
The holder 11 is engaged with the slit engaging projection 11
a, slides in the axial direction in the slit 10 formed in the inner cylinder 8 to move forward, and pushes the held bar-like object little by little forward. After use, if the rotation operation unit 9 is rotated in the opposite direction to the above, the rod-like object is retracted and stored in the outer cylinder 6 by the reverse operation.

Next, with reference to FIG. 3, the operation of discharging the remaining loss core after the rod-like material such as the core, which is a feature of the present invention, is consumed will be described. First, FIG. 3A shows a case where the holder 11 and the slider 13 are at the so-called highest point, that is, the slider 13 is located at the upper end of the slit 10 in the inner cylinder 8. At this time, the guide groove engaging projection 13a of the slider 13
Is located at a curved portion 12 a in the guide groove 12 of the holder 11, and the slider 13 is kept engaged with the holder 11.

Subsequently, the rotary operation unit 9 is rotated, and the slider 13 and the holder 11 are moved forward, and
When the engagement release position (b) is reached, the guide groove engagement protrusion 13a of the slider 13 is disengaged from the curved portion 12a of the guide groove 12 of the holder 11, enters a linear portion, and is released from engagement. . At this time, the slit engaging projection 11a of the holder 11 moves to the curved guiding portion 11a formed at the tip of the linear guide slit 10 of the inner cylinder 8, and the slider 13 starts to move forward in the holder 11. .

[0015] When finally reaches the so-called bottom point shown in FIG. 3 (c), the so rod portion 13a of the slider 13 penetrates the holder 11, the stick-shaped material which is supported on the holder 11 is completely Dropped and discharged. The inner cylinder 8
May be formed, for example, two opposing slits may be formed on the inner cylinder 8, and these slits 10 may have a high strength if both ends in the axial direction are closed. Has excellent effects. In this case, for example, in the first embodiment, since there is no split groove, the holder 1
Instead of inserting the slider 1 and the slider 13 from the tip of the inner cylinder 8, the guide slit 10 may be pushed open from the lateral direction of the inner cylinder 8 provided with a plurality of guide slits 10 and fitted.

FIGS. 4 to 13 show a second embodiment of the present invention. The inner cylinder 8 has a bent portion 20a as a guiding portion at its front end, but has a guide slit 20. A hollow rod-shaped object holder 21 having a slit engagement projection 21a is provided on the guide slit 20 by the projection 21a.
Are slidably engaged with each other. 7 and 8, the holder 21 has a regular hexagonal hole formed at an intermediate position apart from both ends. To be more specific, the hexagon is formed in such a direction that the hexagonal corner is located at the center of the protrusion 21a formed on the outer peripheral portion in the radial direction.

Further, a slider 23 is slidably inserted into the holder 21. This slider 23
Consists of a front rod portion 23a and a rear slider body 23c having a spiral groove engaging projection 23d. The projection 23d is engaged with the spiral groove 7 formed on the inner periphery of the outer cylinder 6. . Slider 23 in this manner has also been freely slide in the axial direction. This slider 23 is similar to the slider 23 shown in FIGS.
As shown in FIG. 12, the front rod portion 23a is formed in a regular hexagonal cross section. More specifically, the hexagonal side is formed in such a direction that the sides of the hexagon in the radial direction are located corresponding to the protrusions 23d formed on the outer peripheral portion of the slider 23, that is, the directions are different from the hexagonal holes of the holder 21. ing.

Further, the rod-shaped object feeding device having the above structure is easily assembled in the following order. First, the split groove 21 b formed over the entire axial direction of the holder 21 is pushed open, and the hexagonal rod portion 23 a at the front end of the slider 23 is inserted into a hole at the rear of the holder 21. Note that this holder 21
As described above, a hexagonal hole 21c having a hexagonal cross section having a direction different from that of the hexagonal side of the rod portion 23a is formed at an intermediate position separated from both ends of the rod portion 23a. Accordingly, since the tip of the rod portion 23a does not coincide with the hexagonal hole 21c of the holder 21, the rod portion 23a comes into contact with the periphery of the hole 21c and cannot be further advanced in the hollow holder 21, and both are assembled in this state. It is.

Next, the holder 21 and the slider 23 are inserted from the rear end opening of the inner cylinder 8. Finally, the rod-shaped material may be loaded into the holder 21. However, the holder 21
Is formed with a groove 21b, so that even if the outer shape of the rod-shaped object varies, the inner diameter of the holder 21 can be slightly reduced beforehand so that the groove 21b can be expanded and easily and reliably. Can be set to

The operation of this embodiment will be described below with reference to the operation explanatory diagram of FIG. First, when the rotary operation part 9 at the rear end of the rod-like material feeding tool to which the rod-like substance is attached in advance is rotated, the slider 23, the holder 21 and the rod-like substance
23d moves in accordance with the spiral groove 7 formed in the inner peripheral portion of the outer cylinder 6, and this movement causes the protrusion 21a of the holder 21 to move.
Moves forward in the guide slit 20 formed in the inner cylinder 8, so that the rod-like object also moves forward as shown in FIG.

As described above, since the guide slit 20 has the bent portion 20a as a guiding portion at the tip portion as described above, the projection 21a of the holder 21 is
0a, the holder 21 is rotated, and FIG.
A hexagonal hole 21c of the holder 21 as shown in FIG.
And the hexagonal rod portion 23a of the slider 23 are matched. Then, the engagement of the slider 23 which has been engaged with the holder 21 until now is released, and the rod portion 23a of the slider 23 penetrates through the holder 21, so that the rod-like material supported by the holder 21 is discharged.

By the way, if the pitch of the spiral groove formed on the inner periphery of the outer cylinder 6 is touched, if the pitch is coarsened, the inclination of the spiral groove becomes gentle, the molding is easy, and even if the rotary operation part is slightly rotated, the comparison is made. It is possible to pay out many target rods. In this case, when the outer cylinder is drawn and formed, it is possible to rotate and form the molded product without rotating the core pin, so that the number of shots also increases. However, when the pitch of the spiral groove is made coarse, there is a danger that the rod-shaped object will return if an excessive pressure is applied to the rod-shaped object during use. On the other hand, if the pitch of the spiral groove is made smaller, the outer cylinder must be pulled out while rotating the core pin during molding, which results in a problem that it takes time and costs. Therefore, in order to prevent the rod-like object from returning easily even if the pitch is coarsened, the slider 23 may be modified as follows.

FIGS. 14 to 17 show an improved slider 3.
The slider body 33c constituting the rear part of the slider 33 is partially cut to form a notch 33e as shown in the drawing, whereby the slider body 33c is an elastically deformable portion. This portion is compressed and deformed when an excessive pressure is applied to the rod during use. Then, since the slider 33 is structurally constituted by the elongated rod portion 33a and the wide slider body 33c, the slider 33 is deformed in the inner cylinder 8 and is displaced as shown by a dotted line in FIGS. . As a result, the slider body 3
The corner of 3c abuts the inner wall of the inner cylinder 8 to provide a stopper function. Note that the basic operation of discharging the rod-shaped material in this modified example is the same as the operation of the above-described second embodiment, and a description thereof will be omitted.

[0024]

[Effect of invention] This invention, since the configuration of as described above, there very easy easy to assemble structure, good feeding operability, and automatically drainable rod-shaped material propelling device 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-shaped object feeding device of FIG. 1, showing a state where a rod-shaped object holder and a slider are located at a front portion and a rear portion, respectively;

FIG. 3 is an explanatory diagram of the operation 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 the rod-shaped object feeding device of FIG. 4, showing a state where a rod-shaped object 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 rod holder of the rod feeding device of FIG. 4;

8 is a sectional view taken along line AA of the rod holder of FIG. 7;

FIG. 9 is a plan 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 front view of the slider of FIG. 9 with a part cut away.

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

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

FIG. 14 is a plan view showing another modification of the slider.

FIG. 15 is a left side view of the slider of FIG. 14;

FIG. 16 is a front view of the slider of FIG.

17 is a sectional view of the slider of FIG. 16 taken along line CC.

FIG. 18 is an explanatory diagram showing a deformed state of the slider of FIG. 14 at the time of excessive writing pressure.

FIG. 19 is an explanatory diagram of main parts showing a deformed state of FIG. 18;

FIG. 20 is an explanatory view in which a part of a conventional color pencil lead-out device is omitted.

[Explanation of symbols]

 Reference Signs List 6 outer cylinder 6c loose fitting groove (locking means) 7 spiral groove (spiral guiding means) 8 inner cylinder 8a loose fitting projection (locking means) 9 rotation operation part (rotation operation means) 10 guide slit 10a guide part 11 rod holder 11a Slit engagement projection 12 Guide groove 12a Curved portion (engagement release means) 13 Slider 13a Guide groove engagement projection (second engagement means) 13d Spiral groove engagement projection (first engagement means)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-61188 (JP, A) Jikken 39-9604 (JP, Y1) Jikken 47-30508 (JP, Y1) (58) Field (Int.Cl. ⁷ , DB name) B43K 23/016 A45D 40/06 B43K 21/10 B43L 19/00 B43M 11/00

Claims (2)

(57) [Scope of request for utility model registration] 1. An outer cylinder having openings at both ends and having spiral guide means formed therein, and an axial guide rotatably provided in the outer cylinder and having a guide portion formed at a front end thereof. An inner cylinder having a slit, locking means provided on the outer cylinder and the inner cylinder, the inner cylinder being rotatable with respect to the outer cylinder, but locking in the axial direction, and a rotation operating means provided at a rear end of the inner cylinder And a hollow rod holder having a slit engagement projection fitted in the inner cylinder and engaged with the guide slit,
A slider having first engaging means slidably inserted into the rod-shaped object holder and engaging with the spiral guide means of the outer cylinder; a slider for regulating the sliding of the slider; A second engaging means for engaging the object holder, and a disengaging means for disengaging the rod-shaped object holder and the slider at the disengaged position; The rod holder has a polygonal hole at a position separated from the rear end, the slider has a rod portion having a cross section similar to the polygonal hole, and the slider is incorporated in the rod holder. When the polygonal hole of the rod 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, the protrusion of the rod holder is Guide slit of inner cylinder Stick-shaped material propelling device, characterized in that the engagement of the slider and the rod-shaped piece holder sides and the corners is made to match both polygonal shape reaches the guiding portion the stick-shaped material holder is rotated is released. 2. The rod-shaped material feeding device according to claim 1, wherein a rear portion of the slider is formed as an elastically deformable portion deformed against excessive rearward pressure.