JP2016037010A - Pencil holder and pencil box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pencil holder that can reduce generation of scuffs on cut surfaces of pencils while securing sufficient force for holding the pencils.SOLUTION: A pencil holder 1 comprises a plurality of pencil caps 3, in which each pencil cap 3 has a fitted part 31 to be fitted to barrels 71 of pencils 7a and 7b, and a contact part 32, positioned in front of the fitted part 31, to which cut surfaces 72a and 72b of the pencils 7a and 7b contact, and the contact part 32 has an inclined surface 321 with a plurality of inclination angles θ1 and θ2 corresponding to cutting angles θ3 and θ4 of the pencils 7a and 7b, where the inclination angles θ1 and θ2 gradually become smaller as approaching a front side.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a pencil holder having a plurality of pencil caps and a pencil case having a pencil holder.

  Conventionally, as disclosed in Patent Document 1, a pencil cap that covers a front end portion of a pencil so as to protect the core of the cut pencil is known. A pencil holder provided with a plurality of pencil caps is also known. The pencil holder is typically attached to a pencil case and holds a plurality of pencils in the pencil case.

JP 2007-45090 A

  In the pencil cap described in Patent Document 1, the cutting surface is fitted to the cap, not the axial tube portion of the pencil. In this case, the pencil holding force is weakened, and the pencil may fall off the cap. Moreover, since the inclination angle of the inner surface of the cap is different from the cutting angle of the pencil, the cutting surface is in line contact with the inner surface of the cap. In this case, since a local force is applied to the contact portion of the cutting surface, scratches are likely to occur on the cutting surface.

  Therefore, the present invention has been made in view of the above problems, and a pencil holder that can reduce the occurrence of scratches on the cutting surface of the pencil while ensuring a sufficient holding force of the pencil, An object is to provide a writing instrument provided with a pencil holder.

  In the first aspect of the present invention, in the pencil holder provided with a plurality of pencil caps, each pencil cap is positioned in front of the fitting portion, the fitting portion that fits the axial tube portion of the pencil, and the pencil The cutting surface of which is in contact, and the contact portion has an inclined surface having a plurality of inclination angles corresponding to the cutting angle of the pencil, and the inclination angle is reduced toward the front. A pencil holder is provided.

  In the first aspect of the present invention, it is preferable that each pencil cap further has a viewing hole that is positioned in front of the contact portion and formed so that the core cut by the pencil can be seen.

  In a second aspect of the present invention, there is provided a pencil case comprising the pencil holder of the first aspect of the present invention.

  According to this invention, since the cap for pencils has a fitting part fitted with the axial cylinder part of a pencil, sufficient holding power of a pencil is ensured. The pencil cap has an abutting portion with which the pencil cutting surface abuts. As a result, the pencil barrel is prevented from being pushed forward of the cap, so that the pencil holding force is not excessive. Furthermore, the contact portion has an inclined surface having a plurality of inclination angles corresponding to the cutting angle of the pencil. As a result, the cutting surface of the pencil comes into surface contact with the inclined surface, and the force applied to the cutting surface is dispersed, so that the generation of scratches on the cutting surface of the pencil is reduced. Therefore, according to the present invention, a pencil holder capable of reducing the occurrence of scratches on the cutting surface of the pencil while securing a sufficient holding force of the pencil, and a writing instrument including the pencil holder are provided.

FIG. 1 is a perspective view of a pencil holder according to an embodiment of the present invention. FIG. 2 is a front sectional view showing the internal shape of the pencil holder of FIG. 1, and two pencils are inserted into the pencil holder. FIG. 3 is a front view of the pencil holder of FIG. 1, in which two pencils are inserted.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. These embodiments do not limit the present invention, and constituent elements of these embodiments include those that can be easily replaced by those skilled in the art and those that are substantially the same.

  FIG. 1 is a perspective view of a pencil holder 1 according to an embodiment of the present invention. The pencil holder 1 includes six pencil caps 3 (hereinafter simply referred to as “caps 3”). The cap 3 has a hollow, generally cylindrical shape with one end closed. Adjacent caps 3 are connected to each other, and the six caps 3 are aligned in a row on the same plane. The pencil holder 1 is made of, for example, a resin such as polypropylene (PP), polyethylene (PE), ABS resin, or an elastomer, and is integrally formed by injection molding or the like. Each cap 3 is inserted with a pencil whose tip is cut, and the pencil holder 1 can simultaneously hold six pencils. The number of caps 3 of the pencil holder 1 may be two or more other numbers.

  On the outer sides of the caps 3 at both ends, fitting protrusions 5 that protrude in the alignment direction of the caps 3 are provided. The pencil holder 1 can be attached to the pencil case by fitting the fitting protrusion 5 into a fitting hole provided in a pencil case (not shown). Thus, the pencil holder 1 can hold the pencil in the pencil case. The pencil holder 1 can be attached to and detached from the pencil case.

  FIG. 2 is a front sectional view showing the internal shape of the pencil holder 1 of FIG. 1, and two pencils 7 a and 7 b are inserted into the pencil holder 1. As shown in FIG. 2, the pencil cap 3 has a fitting portion 31 to be fitted to the shaft tube portion 71 of the pencils 7 a and 7 b, a front portion of the fitting portion 31, and pencil cutting surfaces 72 a and 72 b. Has a contact portion 32 that contacts with each other, and a protection portion 33 that is positioned in front of the contact portion 32 and protects the cores 73a and 73b of the pencils 7a and 7b. In this specification, the side where the pencil of the cap is inserted is defined as the “rear” side of the pencil holder and the cap, and the side opposite to the side where the pencil of the cap is inserted along the axial direction (longitudinal direction) of the cap Is defined as the “front” side of the pencil holder and cap.

  In order to facilitate the insertion of the pencils 7a and 7b into the cap 3, the inner diameter of the rear end of the fitting part 31 is larger than the outer diameter of the shaft cylinder part 71 of the pencils 7a and 7b. The inner surface of the fitting part 31 has a tapered shape, and the inner diameter of the fitting part 31 gradually decreases toward the front. Since the inner diameter of the front end of the fitting part 31 is smaller than the outer diameter of the shaft cylinder part 71 of the pencils 7a and 7b, the fitting part 31 is fitted with the shaft cylinder part 71 of the pencils 7a and 7b. As a result, a sufficient holding force of the pencils 7a and 7b can be ensured.

  When the cap has only a simple tapered fitting portion, if the force for inserting the pencil into the cap is too strong, the axial tube portion of the pencil is pushed forward of the cap. As a result, since the shaft tube portion is more firmly fitted to the fitting portion, the pencil holding force becomes excessive. In this case, the pencil cannot be pulled out of the cap, or there is a risk of injury due to the reaction when the pencil is pulled out of the cap. In the pencil holder 1, this problem can be solved by the following configuration.

  The contact portion 32 of the cap 3 has an inclined surface 321 having a plurality of inclination angles. In the present embodiment, the inclined surface 321 has two inclination angles θ1 and θ2, where θ1 is 15 ° and θ2 is 23 °. θ2 is larger than θ1, and the inclination angle of the inclined surface 321 decreases toward the front. Pencils 7a and 7b cut by main automatic pencil sharpeners on the market have cutting angles of θ3 and θ4, respectively. θ3 is 15 ° and is equal to θ1. θ4 is 23 ° and is equal to θ2. That is, the inclined surface 321 has a plurality of inclination angles corresponding to the cutting angle of the pencil. The inclined surface 321 may have three or more inclination angles corresponding to the cutting angle of the pencil. Also in this case, the inclination angle decreases toward the front.

  As shown in FIG. 2, when the pencil 7a having a cutting angle of θ3 is inserted into the cap 3, the cutting surface 72a of the pencil 7a contacts the inclined surface 321a having an inclination angle of θ1. On the other hand, when the pencil 7b having the cutting angle of θ4 is inserted into the cap 3, the cutting surface 72b of the pencil 7b comes into contact with the inclined surface 321b having the inclination angle of θ2. This prevents the shaft cylinder portion 71 of the pencils 7a and 7b from being pushed into the front of the cap 3, and the holding force of the pencils 7a and 7b is not excessive. Moreover, since the inclination angles θ1 and θ2 of the inclined surfaces 321a and 321b correspond to the cutting angles θ3 and θ4 of the pencils 7a and 7b, the cutting surfaces 72a and 72b are in surface contact with the inclined surfaces 321a and 321b, and the cutting surface 72a. , 72b is distributed. For this reason, generation | occurrence | production of the damage | wound on the cutting surfaces 72a and 72b of the pencils 7a and 7b is reduced.

  In the protection part 33 of the cap 3, cores 73a and 73b of the pencils 7a and 7b cut out. The inner surface of the protection part 33 has a taper shape, the inner diameter of the rear end of the protection part 33 is equal to the inner diameter of the front end of the contact part 32, and the inner diameter of the protection part 33 gradually decreases toward the front. Further, the front end portion of the protection portion 33 is closed. This can prevent the finger from coming into contact with the cores 73a and 73b in the cap 3 and damaging them.

  A slit 34 extending in the longitudinal direction of the cap 3 is formed on the outer surface of the fitting portion 31. Commercially available pencils have various cross-sectional shapes such as a circle, a triangle, a quadrangle, a pentagon, and a hexagon. A pencil having a triangular or hexagonal cross-sectional shape whose maximum outer dimension is larger than a circle tends to have an excessive fitting force with the fitting portion of the cap. In the present embodiment, the slit 34 is appropriately opened according to the cross-sectional shape of the pencil, so that the variation in fitting force due to the difference in cross-sectional shape can be reduced.

  FIG. 3 is a front view of the pencil holder 1 of FIG. 1, and two pencils 7 c and 7 d are inserted into the pencil holder 1. As shown in FIG. 3, the cap 3 further has a viewing hole 35 that is located in front of the abutting portion 32 and formed so that the cores 73 c and 73 d of the pencils 7 c and 7 d that are cut can be seen. The viewing hole 35 is formed on the outer surface of the protection part 33. Since the state of the cores 73 c and 73 d can be confirmed from the peep hole 35, a pencil suitable for use can be easily and quickly selected without pulling out the pencils 7 c and 7 d from the cap 3.

  The position of the pencil lead depends on the pencil cutting angle and the lead reduction. For this reason, the peeping hole 35 extends in the longitudinal direction of the cap 3, and the length in the longitudinal direction is the length of the cap 3 in the longitudinal direction so that the cores in all states of the pencils having different cutting angles can be seen. Longer than 1/3. On the other hand, the length in the short direction of the peep hole 35 is longer than the radial length of the core so that the core can be seen, and shorter than the radial length of the cap 3 so as to prevent contact between the core and the finger. For this reason, in the pencil holder 1, the state of the lead in the cap 3 can be confirmed while preventing the finger from being damaged by the lead.

  As shown in FIG. 2, a through hole 36 extending in the longitudinal direction of the cap 3 is further formed on the outer surface of the protection portion 33. The through hole 36 is located in front of the slit 34 and is separated from the peep hole 35 by 180 ° in the circumferential direction of the cap 3. When the pencil holder 1 is molded by injection molding, the core pin disposed inside the cap 3 is formed by the cavity disposed at the position of the through hole 36 and the cavity disposed at the position of the peep hole 35. Runout during molding is suppressed. Thereby, generation | occurrence | production of the molding defect of the pencil holder 1 can be reduced.

  As shown in FIG. 3, convex portions 37 projecting radially outward are formed on the outer surfaces of the fitting portion 31 and the contact portion 32. The convex portion 37 is located behind the peep hole 35 and is separated from the slit 34 by 180 ° in the circumferential direction of the cap 3. The convex portion 37 represents a schematic diagram of a pencil with the tip cut off, and guides the user in the insertion direction of the pencil.

DESCRIPTION OF SYMBOLS 1 Pencil holder 3 Pen cap 31 Fitting part 32 Contact part 321, 321a, 321b Inclined surface 33 Protection part 34 Slit 35 Peep hole 36 Through-hole 37 Convex part 5 Fitting protrusion 7a, 7b, 7c, 7d Pencil 71 Axis Cylindrical part 72a, 72b Cutting surface 73a, 73b, 73c, 73d Core θ1, θ2 Inclination angle θ3, θ4 Cutting angle

Claims (3)

In a pencil holder with a plurality of pencil caps,
Each pencil cap
A mating portion that mates with the axial tube portion of the pencil;
It is located in front of the fitting portion, and has a contact portion with which the cutting surface of the pencil contacts,
The pencil holder, wherein the contact portion has an inclined surface having a plurality of inclination angles corresponding to the cutting angle of the pencil, and the inclination angle decreases toward the front.   2. The pencil holder according to claim 1, wherein each pencil cap further includes a viewing hole that is positioned in front of the abutting portion and formed so that a core cut by the pencil can be seen.   A pencil case comprising the pencil holder according to claim 1.

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