KR930007215Y1 - Pressure type automatic lead supply device for description - Google Patents

Abstract

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Description

Extrusion Automatic Feeder for Description

1 is an exploded view of the present invention.

2 is an assembled cross-sectional view of FIG.

3 is a cross-sectional view showing a commercial state of the pencil lead cassette of FIG.

4 is a three-dimensional view showing the assembly of the pencil tube tip of FIG.

5 is a cross-sectional view taken along the line A-A of FIG.

6 is a sectional view along the line B-B in FIG.

7-11 is a view showing the operating state of the pencil tube tip of FIG.

12 is a partially cutaway perspective view illustrating an assembly of a pencil tube tip as another embodiment of the present invention.

13 is a cross-sectional view of FIG.

14 is a cross-sectional view taken along line C-C in FIG.

Figure 15 is a perspective view showing the assembly of the pencil tube tip as another embodiment of the present invention.

FIG. 16 is a cross sectional view of FIG.

17 is a perspective view showing the assembly of the pencil and the tip as another embodiment of the present invention.

FIG. 18 is an assembly cross-sectional view of FIG. 17. FIG.

19 is a perspective view showing the assembly of the pencil and the tip as another embodiment of the present invention.

FIG. 20 is an assembly cross-sectional view of FIG. 19. FIG.

21 is a cross-sectional view of the pencil sharpener of the present invention.

22 is a perspective view of FIG. 21;

Figure 23 is a view showing the operating state of the pencil sharpener of the present invention.

* Explanation of symbols for main parts of the drawings

1: appearance 2: inner tube

3: tightening ring 4: spring

5: pencil lead cassette 6: pencil lead

The present invention relates to an improved compression type automatic pencil lead supply device, that is, an automatic pencil, in which an inner tube is stretched every time an extrusion tube is extruded and opened by integrally forming a clamp and a pencil tube holding a pencil core, and the upper and lower clamps alternately. By using the pencil lead cassette to expand or support the pencil lead smoothly and store the pencil lead as a stretch tube directly, simplify the overall structure, simplify the production and assembly with fewer parts, and save the pencil lead. In addition, the cost is reduced, and the strength of the pencil lead is increased as the fastening ring and the clamp approach, and the pencil lead is saved, which is an advantage compared to any automatic pencil.

The conventional automatic pencil puts the inner tube for storing the pencil lead into the outer shell, and installs an elastic clamp at the front end of the inner tube, pulls up the elastic clamp into the upper sleeve by inserting the spring sleeve into the upper sleeve, and tightens the elastic clamp with the ring. Then, the anti-slip rubber ring and ring doffer are formed at the tip of the inside of the pencil tube, and when the inner tube is pushed in the direction of the pencil tip, the pencil core stuck to the work and the clamp is moved downward together with the elastic clamp. Since the force of the clamp is greater than the friction of the anti-slip rubber ring, the pencil lead comes out of the pencil tube. Then, when the ring is interrupted by the ring stopper, only the clamp is lowered to release the ring. The next time the inner tube is released, the pencil core is supported by the frictional force of the anti-slip rubber ring, and only the inner tube is pulled back by the force of the spring in the sleeve together with the elastic clamp. When the ring is disturbed by the sleeve, the clamp is tightened again. It is cut and a pencil lead is picked up and used.

In addition, in the conventional automatic pencil, a spiral is formed at the end of the pencil tip or the sleeve, and the pencil propaganda and the pencil tube are combined.

Since each part of the conventional automatic pencil is made separately and assembled, each part requires a high precision and costs a lot of assembly and manufacturing costs. Particularly, each part is combined with a spiral, and the precision is reduced when excessively tightened or loosened, and when the coupling part is deformed by an impact during use, the center of the pencil core is shifted and broken or blocked each time the pencil core is sent out.

In addition, since the distance between the clamp pin and the pencil tip that hold the pencil lead is long, the pencil lead that remains after use is long, which is very wasteful.

In addition, when the pencil lead is used up to replenish the pencil lead, each time the pencil lead comes out, the finger is dirty, and the container of the purchased pencil lead is a waste because the use value is lost when the pencil lead is gone.

The present invention has been devised in view of the above-mentioned shortcomings, and reduces the number of assembly parts, simplifies structural coupling, and facilitates operation, while minimizing the pencil lead remaining after use without cutting the pencil lead.

The external front end of the extrusion automatic feeder for description of the present invention is formed by continuously forming the lower elastic clamps which always support the pencil cores (for example, pencils, colored pencils, cosmetic brushes, etc.) integrally, and form inner tubes on the exterior. At the same time, pull the upper block clamp with a fastening ring to pick up the pencil lead, and insert a commercial pencil lead cassette which stores the pencil lead into the exterior by combining it with the inner tube and push the compression tube as the compression tube. It is used to release or support pencil lead by opening operation.

In the structure of the present invention, for example, if the compression tube for storing the pencil lead for description such as dictation, drawing, makeup, etc. is pushed downward, the upper block clamp goes down with the pencil lead by tightening the ring, The tightening ring is released to the lower clamp of the outer tip, and only the upper clamp continues to descend to release the tightening of the ring to open the pencil core for drawing. Next, when the force to press the compression tube is released, the spring force raises the upper convex clamp of the inner tube together with the ring, and the descriptive pencil lead does not move while being caught by the lower clamp of the exterior. If the tightening ring is supported on the upper part of the exterior, the upper clamp is retightened to enable the use of the descriptive pencil lead.

The present invention, as shown in Figure 1-6, the outer tube (1), the inner tube (2), the fastening ring (3), the spring (4), the pencil core cassette tube (5), (for example, pencils, colored pencils, cosmetics It is composed of a built-in pencil lead (6).

The lower end of the facade 1 is a conical tube wall having two openings and formed with two corresponding lower clamps 11, the lower clamp 11 being formed with the lower end gradually reduced from the base 12, The inner side each forms a clamp shoe 13 to form an elastic clamp, and the opposing face has a concave surface 14 for picking up the pencil lead, and always picks up the pencil lead 6.

In addition, the lower end of the exterior (1) forms a ring portion 15 on the inside of the base 12 of the lower clamp 11 to stop the tightening ring (3) and at the same time serves to support the spring (4).

The inner diameter 22 of the tube rod 21 of the inner tube 2 is slightly larger than the outer diameter of the pencil core 6, and the tube rod 21 having an upper end arced so that only one pencil core 6 does not block is passed. Through the inside of the ring hole 22 of the ring part 15 in the exterior 1, the upper part of the pipe rod 21 installs the correlation part 24 larger than the diameter of the pipe rod 21 in succession, and the correlation part 24 The center portion of the c) forms a protrusion 23 slightly smaller than the inner diameter of the outer shell 1 so as to slide with the inner wall of the outer shell 1.

The lower end of the tube rod 21 is formed of a long container 25 narrower than the width of the clamp shoe 13 as the vertex portion 251 and an upper convex clamp swelling outwardly and having elasticity. Located between the clamps 11, the clamp shoe 13 is placed in the middle of the long container 25.

And the lowest end of the tube rod 21 is followed by the long container 25 and the upper convex clamp 26, the exit sleeve 27 of the tip of the pencil lead protrudes from the front end of the appearance (1).

The tightening ring is disposed between the clamps 11 and 16 of the outer shell 1, and inserts the tube rod 21 of the inner tube 2, the diameter of which is smaller than the maximum outer diameter of the convex portion 26, It is slightly larger than the outer diameter of the tube rod 21 and has a trapezoidal inclined surface corresponding to the inclination of the convex clamp 26.

The spring 4 is located between the upper surface of the ring portion 15 of the exterior 1 and the bottom surface of the correlator 24 of the inner tube 2, and normally the inner tube convex clamp 26 and the tightening ring 3 are attached. At the same time pushing up to the bottom of the ring portion 15, the convex clamp 26 is tightened by the ring 3 to tighten the pencil lead at a certain position as shown in Figure 7 to fix.

The pencil lead cassette tube 5 stores the pencil lead, and the outer diameter of the opening 51 at the bottom thereof is closely bonded to the inner diameter of the outer shell 1 so as to slide in the outer shell 1, and the inner diameter of the inner tube 2 is correlated. It fits and fits together with the outer diameter of the part 24, and the pencil core built in so that the inside of the cassette tube 5 can communicate with the hole 22 of the inner tube 2 is used.

The pencil core cassette tube (5) forms a fan club (54) with a long U-shaped container (53) and a short U-shaped concave slope (55) below the pipe wall close to the apex end (52), and inside the clip (54) bottom. The edge is provided with a gap 56 between the U-shaped concave slope 55 at the arc portion 541 so that the automatic pencil can be held in the pocket or the like with the clip 54.

And the pencil lead cassette (5) is a pencil lead is commercially available in the form of the cap tube 57, the new cassette is used every time the use of the pencil lead and at the same time the length of the appearance (1) is shortened to reduce the manufacturing cost and manufacturing cost do.

In the present invention, as shown in Figs. 7-11, the spring 4 always lifts the inner tube 2. At this time, the outer diameter of the upper convex clamp 26 is larger than the inner diameter of the ring (3) can be pulled up to the bottom of the ring portion 15 at the same time as the inner pipe (2) is pulled upwards, the inner pipe, When (2) rises again, the upper convex clamp 26 is compressed by tightening of the ring 3, the ascension of the inner tube 2 which picks up the pencil lead is stopped, and the pencil lead is fixed. In this case, the shoe 13 of the two lower clamps 11 of the exterior 1 picks up the pencil lead 6 at the lower end of the middle portion 25 of the convex clamp 26, and the pencil lead is inserted through the sleeve 27. Keep stable (see Figure 7).

Next, when the pencil lead cassette 5 is pushed down, the force of picking up the pencil lead of the upper convex clamp 26 by the tightening force of the fastening ring 3 is greater than the force of picking up the pencil lead of the lower clamp shoe 13. 26) and the fastening ring 3 lower the pencil lead down as it is (see Fig. 8). At this time, if the lowering of the ring 3 is hindered by the inner wall of the clamp 11 of the exterior 1, only the inner tube 2 descends, and the tightening ring 3 releases the tightening of the upper convex clamp 26, Subsequently, when the upper end 251 of the long container 25 is pressed to the position of the lower clamp shoe 13, the convex clamp 26 is slightly expanded because the width of the long container is narrower than the width of the clamp shoe 13. The grip is released and at the same time the pencil lead 6 is supported by the force of the lower clamp shoe 13, and the pencil lead and part of the inner tube 2 reach the lowest point (see FIG. 9).

Next, when the pencil core cassette tube 5 is released, the spring 4 pushes the inner tube 2 to the opposite side and simultaneously pulls up the tightening ring 3. In this case, since the upper convex clamp 26 is released while the tightening ring 3 has not yet reached the bottom of the ring part 15, the pencil lead 6 is picked up by the clamp shoe of the exterior 1 so that the inner tube ( 2) only rises (see FIG. 10). Subsequently, when the tightening ring 3 is prevented from rising to the bottom of the ring part 15, the tightening ring 3 tightens the upper convex clamp 26 of the inner tube 2 which is raised again to pick up the pencil lead 6 (11th). See also).

12-14 is another embodiment of the present invention, the lower end of the exterior (1) is an arc-shaped conical tube (11a) cut off the tip to form a fan-shaped opening corresponding to the hole of the lower end to form a lower clamp (13a) Also, the groove 1a is perpendicular to both clamps 13a and the outer shell 1 is axially elongated. The sleeve 27 of the inner tube 2 is inserted at the same time while providing elasticity to the lower clamp 13a. After insertion and insertion, the lower clamp 13a is located in the elongated container 25 of the upper convex clamp 26 of the inner tube 2.

Then, the inner tube 2 and the fastening ring 3 are inserted into the outer shell 1, and then subjected to ultrasonic heat treatment at an appropriate position of the outer shell 1 and heat extruded from the outside to form the ring portion 15a on the inner wall of the outer shell 1. ) And stops the fastening ring (3) and the spring (4). 15 and 16 is another embodiment of the present invention to form a spiral coupling portion (1a) in the outer diameter of the ring portion 15 of the appearance (1) instead of 12 to 14, arc-shaped conical tube (11b) And a clamp protrusion 13a having a concave surface 14a at the lower end of the inner wall of the conical tube 11b, and always picks up the pencil lead 6 in the long container 25 of the inner tube 2, The groove 16b is formed to give elasticity to the clamp 13a.

17 and 18 degrees as another embodiment of the present invention to facilitate the mounting of the conical tube (11b) and the inner tube (2) by making the groove (16b) longer instead of 15 to 16 degrees, and the appearance (1) Spiral coupling portion (1b) is formed on the inner wall of the lower end, the groove (16b) is contracted by the engagement with the arc-shaped conical tube (11c) and at the same time narrowed between the lower clamp (13a) to give elasticity to the clamp appropriately pencil core Let's pick up.

Article 19. 20 degrees is a further embodiment of the present invention, which forms a helical coupling portion 1c at the outer diameter of the clamp base 12 of the outer casing 1, and the inner wall surface is in close contact with the outer side of the elongated clamp 11d. The clamp shoe 13b contracts by engaging with (10), and the pencil lead is picked up.

21-23 are used for coarse pencil lead (0.5 mm or more) as another embodiment. In other words, the inner tube 2 protrudes out of the outer shell 1 rather than the protruding portion 23 to form a compression tube, and the recess 28 is formed at its top end to incorporate the pencil sharpener 8.

The pencil sharpener 8 forms a deep cone hole 821 and a shallow cone hole 822 which share a bottom surface larger than the diameter of the pencil core 6 in the cylinder 81 and form a V between the holes 821 and 822. The container 83 which inserts the knife 84 which has the female blade 85 is formed.

V-shaped knife 85 is molded by press cutting and does not need to be sharply ground separately. When cutting the pencil lead 6, the pencil lead is inserted into the conical hole, and the sharpener 8 is alternately rotated in the forward and reverse directions, and the degree of sharpening the pencil lead is changed by changing the inclination angle as shown in FIG.

The present invention has the following advantages over the prior art as can be seen above.

(1) Since the conventional automatic pencil has many parts, high precision is required and manufacturing cost and assembly cost are high.

Since the clamp that picks up the pencil lead of the present invention is molded integrally with the exterior, the clamp lead can be accurately picked up so as not to break the pencil lead. In addition, the cost is reduced by reducing the assembly of parts.

(2) In the present invention, since the pencil lead cassette is used as the compression tube and the rod of the pencil as it is, the length and the length of the automatic pencil and the inner tube are shortened, and the manufacture of the mold is easy, and the cost and materials are reduced.

(3) In this design, since the pencil lead cassette is used by inserting it directly, it is not necessary to take out the pencil lead by hand every time the pencil lead is used, such as Joa, and it is convenient and hygienic because it does not dirty the fingers.

(4) Since the clamping distance of the pencil lead and the inner tube of the inner core of the present invention is shorter than before, and the position of the clamp is closer to the tip of the pencil lead, the force of holding the pencil lead becomes stronger and the pencil lead is easily broken as in the prior art. There is no work, and the length remaining after using the pencil lead is short, so there is little waste of pencil lead.

Claims (6)

The lower end forms two openings in the conical tube wall to form two corresponding clamps, which gradually shrink as they go from the clamp base to the lower end, and the inner side of the tip has a clamp shoe 13, and the opposite face Clamp exterior (1), which has a concave surface for picking up the core features and always picks up the core features, and the tube rod passes through the hole of the ring portion 15 inside the exterior, and the hole and the tube rod through the core features in the center The contact end of 21 has an arc shape and forms a protrusion sliding intimately with the inner diameter of the exterior, and as the lower end becomes a vertex, it has a long container 25 narrower than the width of the clamp shoe 13 and convex to the outside to have elasticity. A shim stored inside is formed by an upper convex clamp 26, having a clamp shoe 13 at the bottom of the exterior in a long container, exposing the outlet sleeve 27 of the tip of the pencil core from the tip of the exterior 1 Between the inner tube 2 for protecting the shape and used for dictation, depiction, makeup, etc., between the upper portion of the upper convex clamp 26 and the ring portion 15 of the outer shell 1 via the tube rod 21 of the inner tube. The diameter of the clamping ring (3) smaller than the maximum outer diameter of the convex portion and slightly larger than the outer diameter of the tube rod, and is located between the outer ring portion (15) and the protrusion of the inner tube, and always the inner tube (2) and the ring (3) to the upper part to support the ring to the ring part to tighten the convex clamp 26 and pick up the pencil core in the tube, and the outer diameter of the opening is in close contact with the outer diameter of the inner tube, and the inner diameter is the apex of the inner tube. Combining with the outer diameter, it also serves as a compression tube of the automatic feeding device, and the inside is composed of a pencil core cassette tube (5) for supplying the pencil core to the automatic feeding device through the hole of the pencil core of the inner tube. Put out, dictation, description, makeup, etc. Extrusion auto feeder used for the use of The lower surface of the outer surface is an arc-shaped conical tube cut at its tip, and forms a lower clamp 11 in the shape of a fan opening corresponding to the hole at the lower end thereof, and is perpendicular to both clamps and is long in the axial direction of the outer surface. A groove is formed, the elasticity of the clamp is inserted, and the sleeve of the inner tube 2 is inserted, and the lower clamp 11 of the outer tube 1 is placed in a long container of the convex clamp of the inner tube, and always has a pencil core having a different length and outer diameter. And the ring portion 15 is heat treated with ultrasonic waves and heat-compressed from the outside to be formed on the inner wall of the outer appearance (1). The inner tube (2) of claim 1, wherein the lower end of the outer tube forms a spiral coupling portion at an outer diameter of the portion (15) and engages with the arc-shaped conical tube, and forms a clamp protrusion having a concave surface at the lower end of the inner wall of the conical tube. A descriptive extrusion automatic feeder which always picks up a pencil lead in a long container and forms a long groove to give elasticity to the lower clamp (11). 2. The lower end of the outer shell according to claim 1, wherein the lower end of the outer tube makes the groove longer and slightly increases the distance between the outer diameter of the conical tube and the clamp to facilitate mounting of the inner tube 2, and spirals to the lower inner wall of the outer tube (1). Extrusion automatic feeding device for forming a coupling portion, the groove shrinks upon engagement with the arcuate conical tube, and the lower clamp (11) is reduced and the pencil lead is picked up. The clamp base of claim 1, wherein the clamp base of the outer casing 1 forms a lower outer joining portion, and the outer wall of the outer casing engages with the lower outer shell in close contact with the outer side of the elongated clamp so that the clamp shoe 13 always contracts to pick up the pencil lead. Also, when the inner tube (2) is pushed downward by the engagement of the inner tube wall and the fastening ring (3) of the outer clamp, the extrusion automatic feeding device for the description that the pencil lead advances. 2. The long container 25 of the inner tube 2 is narrower than the width of the lower clamp shoe 13 as it becomes a peak, and the lower clamp 11 is long when the inner tube 2 is pushed downward. An extruded automatic feeding device for depiction in which the upper block clamp 26 is enlarged by the container 25 so that the force of picking up the pencil lead of the upper convex clamp 26 is released and the lower clamp shoe 13 picks up the pencil lead.