JP2017024317A - Friction body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a friction body which can be produced at low cost and is suitable to display a writing instrument and is suitable for portable use in which a writing instrument is hardly dropped off from the friction body.SOLUTION: There is provided a substantially plate-like friction body 1 made of a soft resin material which holds a plurality of writing instruments 2 having a clip in parallel, wherein the friction body 1 comprises at least: a holding part 4 which is held by the clip 3 of the writing instruments 2 and in which the plurality of the writing instruments 2 are arranged in parallel; an engagement part 6 which engages with a ball section 5 of the clip 4 to prevent falling-off of the writing instruments 2 from the holding part 4; a ring-shaped support part 7 into which a tip part of the writing instruments 2 is inserted; an upper frame 13 extended so as to include the upper end part of the writing instruments 2; and a recessed part 13a provided approximately in the middle of the upper frame 13.SELECTED DRAWING: Figure 1

Description

The present invention relates to a friction body capable of changing the color of thermochromic ink, and more particularly to a friction body suitable for display and carrying of writing instruments.

  In conventional writing instruments having thermochromic ink, it is known that the friction body for changing the color of the ink and decoloring is attached to a part of the writing instrument, but not attached to the writing instrument. A writing instrument set in which a friction body is housed in a dedicated container is disclosed.

Japanese Patent Laying-Open No. 2015-51562

Here, since the writing instrument set requires a dedicated container and separately contains the writing instrument and the friction body, the writing instrument set tends to be large and difficult to accommodate in a small bag or the like, and has a problem in portability. Yes.
Accordingly, an object of the present invention is to provide a friction body that does not require a dedicated container when carrying the writing instrument and the friction body, and is easy to carry the writing instrument and the friction body. It is another object of the present invention to provide a friction body that can be manufactured at low cost, and that the writing instrument is less likely to fall off the friction body and that the friction body is less likely to break.

The friction body according to the present invention made to solve the above problems is a substantially plate-like friction body made of a soft resin material, and is held by a clip of the writing instrument, and a plurality of writing instruments are arranged in parallel. And formed on the holding portion, engaged with the ball portion of the clip to prevent the writing instrument from falling off the holding portion, and formed below the holding portion or near the lower portion of the holding portion. A support part through which the tip of the writing instrument is inserted, an upper frame extending from both sides of the upper part of the holding part so as to contain the upper end part of the writing instrument, and a recess provided substantially in the middle of the upper frame It is provided with at least.

Thus, since it is a substantially plate-like friction body made of a soft resin material that holds a plurality of writing instruments provided with clips in parallel, it can be manufactured at low cost.
In addition, since an upper frame is provided from both sides of the upper portion of the holding portion so as to enclose the upper end portion of the writing instrument, and a recess is provided substantially in the middle of the upper frame, the recess is hung on the display hook. Writing instruments can be displayed easily.

On the other hand, when the clip is pushed in while holding the holding portion with the clip of the writing instrument, the ball portion of the clip is engaged with the locking portion. Moreover, the front-end | tip part (lower part) of a writing instrument is penetrated by the support part, and rocking | fluctuation of the lower part of a writing part is prevented.
In other words, the upper part of the writing instrument holds the holding part with the clip, and the ball part of the clip engages with the locking part and is fixed. On the other hand, the lower part of the writing part is engaged with the support part and is prevented from swinging. As described above, since the writing tool is attached to the friction body, the writing tool is unlikely to fall off, and the friction body is suitable for portable use.

Here, it is desirable that a hinge portion is provided in the vicinity of a boundary between the upper frame and the holding portion, and the upper frame is formed so as to be separable by the hinge portion.
The upper frame is necessary for display, but after purchasing a product, it interferes with the entry and exit of writing instruments. Therefore, the upper frame is formed so that it can be easily separated at the hinge portion.

Moreover, it is desirable to provide the lower frame extended so that the lower end part of the writing instrument might be included from the lower part both sides of the said holding | maintenance part.
Thus, since the lower frame is provided, contact of the lower end portion of the writing instrument is prevented, and falling off from the friction body is prevented.

As described above, according to the present invention, it is a friction body that can be manufactured at low cost and is suitable for exhibiting a writing instrument, and the writing instrument is difficult to fall off from the friction body, and the friction body is not easily damaged. A friction body suitable for carrying can be obtained.

FIG. 1 is a perspective view showing an embodiment of a friction body according to the present invention. FIG. 2 is a perspective view of FIG. 1 viewed from the back side. FIG. 3 is a cross-sectional view taken along line AA in FIG. 4 is a cross-sectional view taken along line BB in FIG. FIG. 5 is a perspective view showing a modified example of the support portion.

Hereinafter, an embodiment of a friction body according to the present invention will be described in detail with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing an embodiment of a friction body according to the present invention, and FIG. 2 is a perspective view of FIG. 1 viewed from the back side. 3 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line BB in FIG. FIG. 5 is a perspective view showing a modification of the support portion. Note that “discoloration” in the present invention indicates that the handwriting of the thermochromic ink written on the paper or the like changes. This includes discoloration of handwriting and decolorization that makes handwriting invisible.

In the figure, reference numeral 1 denotes a friction body, and the friction body 1 is formed so as to be substantially plate-shaped by a soft resin material and configured to accommodate three writing instruments 2 arranged in parallel. Yes.
The friction body 1 is clamped by the clip 3 of the writing instrument 2, engages with the holding part 4 in which the writing instrument 2 is arranged in parallel, and the ball part 5 of the clip 3, and the writing instrument 2 is dropped from the holding part 4. And a ring-shaped support portion 7 through which the tip of the writing instrument 2 is inserted.

In the upper half of the holding portion 4, a curved portion 9 that follows the shape of the shaft portion of the writing instrument 2 is formed. The curved portion 9 formed in the upper half of the holding portion 4 functions as a guide groove (guide portion) that guides the movement of the writing instrument 2 when the writing instrument 2 is stored as shown in FIG.
Further, the curved portion 9 has a function as an isolation wall for preventing the writing tools 2 from colliding with each other after the writing tool 2 is accommodated in the friction body 1.

Further, on the back side of these curved portions 9 (the upper half of the holding portion 4), as shown in FIG. 2, the movement of the clip 3 is guided, and the clip is accommodated and accommodated finally. A groove 8 is formed. And the locking hole 6 which the above-mentioned ball | bowl part 5 of the clip 3 engages is formed in the front-end | tip part of these clip accommodation grooves 8. FIG.

On the other hand, a rectangular plane portion 10 is formed in the lower half of the holding portion 4. As shown in FIGS. 1 and 3, the front surface of the flat portion 10 is formed on a flat surface having no step with the curved portion 9. The flat surface portion 10 is in contact with a substantially intermediate portion of the shaft portion of the writing instrument 10.

Further, a ring-shaped support portion 7 into which the tip end portion of the writing instrument is inserted is provided at the lower end portion of the holding portion 4.
The ring-shaped support portion 7 has a function of supporting the tip portion of the writing instrument 2 by inserting and engaging the tip portion of the writing instrument 2 through the hole 7 a and preventing the writing instrument 2 from swinging.

Further, flange portions 11 are formed on both side edges of the holding portion 4, and are extended from both sides of the upper portion of the flange portion 11 (from both upper sides of the holding portion 4) so as to include the upper end portion of the writing instrument 2. A substantially U-shaped upper frame 13 is formed.
Near the boundary between the upper frame 13 and the holding part 4 (flange part 11), a bendable (foldable) hinge part 14 is formed. The hinge portion 14 is formed by a thin portion.
Therefore, by cutting the hinge portion 14 (thin portion), the upper frame 13 and the holding portion 4 (flange portion 11) can be easily separated, and the upper frame 13 can be removed from the writing friction body 1.
In addition, a recess 13 a is provided substantially in the middle of the upper frame 13. The writing instrument 2 can be easily displayed by hanging the recess 13a on a display hook.

Similarly to the above-described upper frame 13, the lower frame 12 extends substantially from both sides of the lower portion of the flange portion 11 (from both lower portions of the holding portion 4) so as to include the lower end portion of the writing instrument 2. Is formed.
The lower frame 12 prevents the writing tool 2 from falling off the friction body 1 due to the lower end of the writing tool 2 coming into contact with something.
That is, when the lower end portion of the writing instrument 2 comes into contact with something and a pushing force acts on the writing instrument 2, the writing instrument 2 may move upward and fall off the friction body 1. The lower frame 12 is provided in order to prevent such falling off, and prevents the lower end portion of the writing instrument 2 from coming into contact with the other.

In addition, as above-mentioned, since this friction body 1 is substantially plate-shaped by the injection molding of a single material (soft resin material) as mentioned above, it can be manufactured at low cost. Moreover, the support part 7 is inclined with respect to the axis part axis line of the writing instrument 2, thereby facilitating die cutting.

Examples of the soft resin material constituting the friction body 1 include thermosetting rubber such as silicone rubber, nitrile rubber, ethylene propylene rubber, and ethylene propylene diene rubber, and thermoplastic elastomer such as styrene elastomer, olefin elastomer, and polyester elastomer. You may comprise a rubber elastic material, the mixture of 2 or more types of rubber elastic materials, and the mixture of a rubber elastic material and a synthetic resin so that a Taber abrasion amount may be 10 mg or more. Further, a mixture of a polypropylene resin and a styrenic thermoplastic elastomer, or a mixture of a polypropylene resin and a polypropylene thermoplastic elastomer is subjected to a Taber abrasion under an abrasion test (ASTM D1044) load 9.8 N, 1000 rpm environment defined in JIS K7204. It is preferable that the Taber wear amount on the wear wheel CS-17 of the testing machine is 10 mg or more. Furthermore, it is desirable that the friction body 1 has a durometer D hardness defined in JIS K6203 of 30 or more. Thereby, a predetermined hardness can be ensured.

Next, a case where the writing instrument 2 is attached to the friction body 1 will be described.
First, the upper frame 13 is bent downward from the hinge portion 14, and the writing instrument 2 is placed on the bending portion 9 and the flat portion 10. Then, the clip 3 is pushed downward while engaging the edge of the clip receiving groove 8.

On the other hand, the shaft portion of the writing instrument 2 moves while being guided by the bending portion 9, and the tip end portion of the writing instrument 2 passes through the hole 7 a of the support portion 7 and reaches the vicinity of the lower frame 12. At this time, the ball portion 5 of the clip 3 is locked in the locking hole 6 and the clip 3 is completely stored in the clip receiving groove 8.
In this way, by attaching a plurality of writing instruments 2 to the friction body 1, the writing instruments 2 are held in parallel.

Further, in order to take out the writing instrument 2 attached to the friction body 1, the writing instrument 2 is pulled upward, contrary to the above-described storing operation. That is, by pulling up the writing instrument 2 upward, the engagement between the ball portion 5 of the clip 3 and the locking hole 6 is released, and the writing instrument 2 is taken out from the friction body 1.

Furthermore, this friction body 1 is used for both display and carrying. That is, at the time of display at a store or the like, the cutout portion 13a of the upper frame 13 can be hung on the display hook. Moreover, by cutting the hinge part 14 and removing the upper frame 13, it can be set as the friction body 1 with which the writing instrument 2 is easy to attach or detach, and can be used conveniently for carrying.
Even when the upper frame 13 is not removed, it can be used as a portable device.

  The writing instrument 2 is a writing instrument capable of obtaining a handwriting with thermochromic ink. The thermochromic ink maintains a predetermined color (first color) at room temperature (for example, 25 ° C.) and changes to another color (second color) when the temperature is raised to a predetermined temperature (for example, 65 ° C.). After that, when the ink is cooled to a predetermined temperature (for example, −10 ° C.), the ink has a property of returning to the original color (first color) again. In general, the second color may be colorless, and the stroke drawn with the first color (for example, red) may be heated to be colorless. Accordingly, the frictional body 9 rubs against the paper surface or the like on which the drawn line is written to generate frictional heat, thereby changing the drawn line to colorless. Of course, the second color may be a color other than colorless. More specifically, the thermochromic microcapsule pigment used as the color material of the thermochromic ink includes a microencapsulated thermochromic composition containing at least a leuco dye, a color developer, and a color change temperature adjusting agent. It is done. The reversible thermochromic microcapsule pigment has an average particle diameter of 0.1 to 5.0 μm, preferably 0.5 to 2 μm. The reversible thermochromic microcapsule pigment is preferably added in an amount of 4 to 30% by weight based on the total amount of the ink composition. The average particle size was measured using a particle size measuring device N4Plus (manufactured by COULTER). At the time of measurement, the sample was diluted with water until the recommended concentration of N4Plus was reached, and the measurement was performed at a temperature condition of 25 ° C.

  The leuco dye that can be used is not particularly limited as long as it is an electron donating dye and functions as a color former. Specifically, from the point of obtaining an ink having excellent color development characteristics, conventionally known ones such as triphenylmethane, spiropyran, fluoran, diphenylmethane, rhodamine lactam, indolylphthalide, leucooramine, It can be used alone (one kind) or in a mixture of two or more kinds (hereinafter simply referred to as “at least one kind”). Specifically, 6- (dimethylamino) -3,3-bis [4- (dimethylamino) phenyl] -1 (3H) -isobenzofuranone, 3,3-bis (p-dimethylaminophenyl) -6 -Dimethylaminophthalide, 3- (4-diethylaminophenyl) -3- (1-ethyl-2-methylindol-3-yl) phthalide, 3- (4-diethylamino-2-ethoxyphenyl) -3- (1 -Ethyl-2-methylindol-3-yl) -4-azaphthalide, 1,3-dimethyl-6-diethylaminofluorane, 2-chloro-3-methyl-6-dimethylaminofluorane, 3-dibutylamino-6 -Methyl-7-anilinofluorane, 3-diethylamino-6-methyl-7-anilinofluorane, 3-diethylamino-6-methyl-7-xylidinofluor Lan, 2- (2-chloroanilino) -6-dibutylaminofluorane, 3,6-dimethoxyfluorane, 3,6-di-n-butoxyfluorane, 1,2-benz-6-diethylaminofluorane, 1 , 2-Benz-6-dibutylaminofluorane, 1,2-Benz-6-ethylisoamylaminofluorane, 2-methyl-6- (Np-tolyl-N-ethylamino) fluorane, 2- (N -Phenyl-N-methylamino) -6- (Np-tolyl-N-ethylamino) fluorane, 2- (3'-trifluoromethylanilino) -6-diethylaminofluorane, 3-chloro-6 -Cyclohexylaminofluorane, 2-methyl-6-cyclohexylaminofluorane, 3-di (n-butyl) amino-6-methoxy-7-anilinofluorane 3,6-bis (diphenylamino) fluorane, methyl-3 ′, 6′-bisdiphenylaminofluorane, chloro-3 ′, 6′-bisdiphenylaminofluorane, 3-methoxy-4-dodecoxystyrino And quinoline, and the like, and at least one of them can be used.

  These leuco dyes have a lactone skeleton, a pyridine skeleton, a quinazoline skeleton, a bisquinazoline skeleton, and the like, and develop color when these skeletons (rings) are opened. It is preferable to use a leuco dye that changes from colored to colorless by heat.

  The developer that can be used is a component having the ability to develop the leuco dye, such as a phenol resin compound, a salicylic acid metal chloride, a salicylic acid resin metal salt compound, a solid acid compound, etc. Is mentioned. Specifically, o-cresol, tertiary butyl catechol, nonylphenol, n-octylphenol, n-dodecylphenol, n-stearylphenol, p-chlorophenol, p-bromophenol, o-phenylphenol, hexafluorobisphenol, p N-butyl hydroxybenzoate, n-octyl p-hydroxybenzoate, resorcin, dodecyl gallate, 2,2-bis (4′-hydroxyphenyl) propane, 4,4-dihydroxydiphenyl sulfone, 1,1-bis (4′-hydroxyphenyl) ethane, 2,2-bis (4′-hydroxy-3-methylphenyl) propane, bis (4-hydroxyphenyl) sulfide, 1-phenyl-1,1-bis (4′-hydroxy Phenyl) ethane, 1,1-bis (4′- Droxyphenyl) -3-methylbutane, 1,1-bis (4′-hydroxyphenyl) -2-methylpropane, 1,1-bis (4′-hydroxyphenyl) n-hexane, 1,1-bis (4 '-Hydroxyphenyl) n-heptane, 1,1-bis (4'-hydroxyphenyl) n-octane, 1,1-bis (4'-hydroxyphenyl) n-nonane, 1,1-bis (4'-) Hydroxyphenyl) n-decane, 1,1-bis (4′-hydroxyphenyl) n-dodecane, 2,2-bis (4′-hydroxyphenyl) butane, 2,2-bis (4′-hydroxyphenyl) ethyl Propionate, 2,2-bis (4′-hydroxyphenyl) -4-methylpentane, 2,2-bis (4′-hydroxyphenyl) hexafluoropropane, 2,2-bis (4′-hydride) Kishifeniru) n- heptane, 2,2-bis (at least one 4'-hydroxyphenyl) n- nonane and the like.

  The amount of the developer to be used may be arbitrarily selected according to the desired color density and is not particularly limited, but is usually 0.1 to 1 part by mass of the leuco dye described above. It is preferable to select within a range of about 100 parts by mass.

  The color change temperature adjusting agent is a substance that controls the color change temperature in the coloration of the leuco dye and the developer, and conventionally known ones can be used. For example, alcohols, esters, ketones, ethers, acid amides, azomethines, fatty acids, hydrocarbons and the like can be mentioned.

  Specifically, bis (4-hydroxyphenyl) phenylmethane dicaprylate (C7H15), bis (4-hydroxyphenyl) phenylmethane dilaurate (C11H23), bis (4-hydroxyphenyl) phenylmethane dimyristate (C13H27) Bis (4-hydroxyphenyl) phenylethane dimyristate (C13H27), bis (4-hydroxyphenyl) phenylmethane dipalmitate (C15H30), bis (4-hydroxyphenyl) phenylmethane dibehenate (C21H43), bis And at least one of (4-hydroxyphenyl) phenylethylhexylidene dimyristate (C13H27) and the like.

As described above, the friction body 1 is formed of a soft resin material in a substantially plate shape, so that sufficient strength can be obtained even though the writing instrument 2 is extremely easy to attach and detach. Can be carried and will not be damaged. Moreover, it can be manufactured at a low cost.
Further, the holding part 4 is sandwiched by the clip 3, the ball part 5 of the clip 3 is locked to the locking part (locking hole) 6, and the lower part of the writing part 2 is engaged with the support part 7. Since the swinging is prevented, the writing instrument 2 is unlikely to fall off the friction body 1.

Moreover, since the front-end | tip part of the writing instrument 2 is protected by the lower frame 12, even if it receives impacts, such as dropping, the writing instrument 2 is hard to drop from a friction body.
Furthermore, since the upper frame 13 is separably formed in the hinge part 14, the upper frame 13 can be removed and it is suitable for carrying.

In addition, in the said embodiment, although the case where the ring-shaped support part 7 was provided integrally with the holding | maintenance part 4 was demonstrated, this invention is not limited to this, For example, as shown in FIG. You may divide this up and down.
That is, as shown in FIG. 5, the upper ring portion 20 is provided integrally with the holding portion 4, and the lower ring portion 21 is moved more toward the tip side of the writing instrument 2 than the upper ring portion 20 and provided integrally with the lower frame 12. May be.
By doing in this way, since the core used for shaping | molding the ring-shaped support part 7 becomes unnecessary, the structure of a metal mold | die becomes simple and it can aim at cost reduction.

Further, if advertisements, advertisements, and other characters related to the writing instrument 2 are placed on the back side of the flat portion 10 shown in the above embodiment (the side opposite to the side on which the writing instrument 2 is in contact), an advertising effect can be obtained.
Further, by forming the friction body 1 transparently or translucently without containing a colorant, the entire writing instrument 2 can be visually recognized, and the advertising effect of the writing instrument 2 can be increased.

DESCRIPTION OF SYMBOLS 1 Friction body 2 Writing instrument 3 Clip 4 Holding part 5 Ball part 6 Locking hole (locking part)
7 Supporting portion 8 Clip receiving groove 9 Bending portion 10 Flat portion 11 Flange portion 12 Lower frame 13 Upper frame 14 Hinge portion

Claims (3)

A substantially plate-like friction body made of a soft resin material capable of changing color of a thermochromic ink,
A holding part that is sandwiched by a clip of a writing instrument and in which a plurality of writing instruments are arranged in parallel;
A locking portion that is formed on the holding portion, engages with the ball portion of the clip, and prevents the writing instrument from falling off the holding portion,
A support part that is formed in the lower part of the holding part or in the vicinity of the lower part of the holding part, and through which the tip of the writing instrument is inserted;
An upper frame extending so as to enclose the upper end of the writing instrument from both upper sides of the holding part;
A friction body comprising at least a recess provided substantially in the middle of the upper frame. The friction body according to claim 1, wherein a hinge portion is provided near a boundary between the upper frame and the holding portion, and the upper frame is formed so as to be separable at the hinge portion. The friction body according to claim 1 or 2, further comprising a lower frame extending from both sides of the lower portion of the holding portion so as to include a lower end portion of the writing instrument.