JPH0872462A - Grip structure of writing implement and applicator - Google Patents

Abstract

PURPOSE: To select the position of a grip part by a simple operation and to fix it surely by changing the condition of engagement between the screw part of the surface of a shaft cylinder and the inward protruding parts of the inner surface of the grip part at any position. CONSTITUTION: A screw part 6 is formed on the surface of a shaft cylinder 1, and more than one inward protruding part 8 is formed on the inner surface of a cylindrical grip part 7. The protruding parts 8 are engaged with the screw part 6, and the grip part 7 is made possible to turn on the outer surface of the cylinder 1 and also to move in the longitudinal direction. In this operation, irrespective of the position of the grip part 7, the condition of engagement between one of the protruding parts 8 and the screw part 6 of the cylinder 1 is made different from that between one of the other protruding parts 8 and the screw part 6 of the cylinder 1. In this way, the position of the grip part 7 is moved in the longitudinal direction by a simple operation, selected, and fixed surely so that the holding part 7 is not moved by the writing pressure during writing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grip portion structure for an applicator such as a writing instrument and a makeup implement, which is capable of moving, selecting and fixing the position of the grip portion in the longitudinal direction of a barrel by a relatively simple operation. It is about.

[0002]

2. Description of the Related Art As the prior art, the actual development of Sho 62-306
No. 87 is mentioned. According to the invention, "a plurality of engagement grooves provided in a shaft cylinder and at least one engagement piece having an engagement protrusion capable of engaging with the engagement groove, and the engagement ring, It is a writing instrument grip device including a fastening ring that can be fastened to the fastening ring while suppressing the outward deformation of the joint piece.

[0003]

In the prior art, the user operates a locking ring and a fastening ring, which are gripping parts, and moves them in the longitudinal direction of the shaft cylinder so that the user grips the gripping position (the gripping part from the tip of the writing). It has the advantage of being able to select (distance to), but that operation was troublesome.

[0004]

SUMMARY OF THE INVENTION The present invention provides a writing tool and a gripping section structure for an applicator that can move, select and fix the position of the gripping portion in the longitudinal direction of the barrel by a relatively simple operation. A screw part is formed on the surface of the shaft cylinder, and at least a plurality of inward projections formed on the inner surface of the cylindrical gripping part are engaged with the screw part to rotate to the outer surface of the shaft cylinder. It is arranged so as to be movable in the longitudinal direction, and at any grip position, one of the inward protrusions and the threaded portion of the barrel are engaged with each other, and at least the other inward direction. The gripping structure in a writing instrument and an applicator in which the engagement state of one of the protrusions and the screw part of the shaft cylinder is different is defined as the first gist, and a screw part is formed on the surface of the shaft cylinder to form a cylindrical gripping part. The screw part formed on the inner surface of the shaft is screwed onto the screw part to form the outer surface of the barrel. It is arranged so as to be rotatable and movable in the longitudinal direction, and the angle of the screw thread of the screw part of the barrel is different from the angle of the screw thread of the screw part of the grip part. The second gist is the grip structure of the writing tool and the applicator in which the crest part is engaged with the inclined surface of the valley part of the other screw thread in a biting manner, and the screw part is formed on the surface of the barrel to form a cylindrical grip A screw part formed on the inner surface of the screw part is screwed onto the screw part and is arranged so as to be rotatable on the outer surface of the barrel and movable in the longitudinal direction, and the top part of at least one screw thread of the screw part. The third gist is a grip part structure in a writing tool and an applicator in which the other part is engaged with the valley part of the screw thread in a biting manner. The screw part is screwed onto the screw part so that it can be rotated to the outer surface of the barrel and moved in the longitudinal direction. A groove is formed in at least one of the top of the screw thread of the screw part of the barrel and the top of the thread of the screw part of the grip part, and the top part is screw thread of the other screw part. A fourth aspect of the present invention is a gripping part structure of a writing tool and an applicator which are pressed into engagement with the valley part of the tool.

An embodiment applied to a writing instrument will be described below, but the same applies to an applicator such as a makeup implement. FIG. 1 is an embodiment in which the present invention is applied to a ballpoint pen, and reference numeral 1 is a barrel body (which is generally called a leading member) 2 and a barrel body fixed to the leading barrel 2 by appropriate means. 3 is a barrel made of metal or synthetic resin, and a barrel 5 having a writing portion (ball) 4 at its tip is housed in the barrel 1 (ink is contained therein). There is. A screw portion 6 is formed on the surface of the barrel body 3 of the barrel 1. Reference numeral 7 is a cylindrical grip portion arranged on the outer surface of the shaft cylinder 1, and an inward protrusion portion 8 is formed on the inner surface of the grip portion 7, and the inward protrusion portion 8 is attached to the screw portion 6. It's like engaging. In this example, as shown in FIG. 2, the inward protruding portion 8 has a plurality of protrusions (three in the drawing) formed in a circumferential shape at equal intervals in a substantially middle portion of the grip portion 7. The forming position may be formed in the front part and / or the rear part of the grip part 7, or the position may be shifted instead of the circumferential shape, and the number of protrusions may be increased. . Further, the number of inward projecting portions 8 is arbitrary as long as a plurality of inward projecting portions 8 are formed, but when the screw portion 6 is a two-thread screw, two,
In addition, when the screw portion 6 is a three-thread screw, there are three,
It is preferable to match the number of protrusions with the number of threads of the screw.
A preferred combination is two inward projections and two threads
There are three inward projections and three threads.

Further, the relationship between the screw portion 6 of the barrel 1 and the inward protruding portion 8 will be described in detail with reference to FIG. FIG. 3 shows an example in which three inward projecting portions 8 are formed. One inward projecting portion 8 and the screw portion 6 are engaged with each other (a in the figure, relatively weak engagement), and others. The two inward protruding portions 8 and the screw portion 6 are formed so as to have different engagement states (b, c in the drawing, relatively strong engagement). That is, this means that the frictional resistances of B in FIG. By doing so, when the grip portion 7 is rotated, moved in the longitudinal direction, the position is selected, and the grip portion 7 is gripped to make a writing, a writing pressure is applied. The writing pressure is supported by the relatively strong engagement, and the movement of the grip portion 7 can be prevented. The inward protruding portion 8 and the screw portion 6
The engagement states with a, b, and c in the figure may be different from each other, or, for example, by changing the screw pitch, the engagement state with Is relatively strong, and at other gripping part positions, the engaging condition of (b) in the figure is relatively strong, etc., and one or more inward protrusions are engaged with the screw part. The engagement state may be changed, and if necessary, at least two types of engagement states may always exist at any grip portion position.

The grip portion 7 will be described in more detail. The same applies to the following examples. Examples of the material include soft ones such as styrene-butadiene elastomer, olefin elastomer, styrene elastomer, polyamide elastomer, polyester elastomer, polyurethane elastomer, urethane, EVA (ethylene vinyl acetate copolymer), and silicone resin. , A
S resin, ABS resin, POM resin, PS (polystyrene) resin, PET (polyethylene terephthalate) resin, PBT (polybutylene terephthalate) resin, PP
Various hard materials such as resin, PMMA (polymethacryl) resin, polymethylpentene, PC (polycarbonate) resin, PA (polyamide) resin and PVC (vinyl chloride) resin can be used. A soft material and a hard material may be appropriately combined and used as a two-layer molded product of different materials. Preferred combinations are a styrene elastomer and a POM resin, and a styrene elastomer and ABS in consideration of moldability and the like. It is a resin. It is useful to appropriately combine and use a soft material and a hard material from the viewpoint that a delicate gripping feeling can be exhibited.

In addition to the above, brass, phosphor bronze, wood, etc. can be used as the material. Further, the surface of the grip portion 7 preferably has anti-slip properties in order to retain the anti-slip effect due to sweat or the like at the time of writing, and "having anti-slip properties" means, for example, a thermoplastic elastomer, Although it is made of a material that has non-slip properties such as silicon resin or wood, and it is a material that does not have anti-slip properties, its surface is chemically, mechanically, or physically treated. With knurls, lattices, etc., or with many small protrusions, the surface of which is covered with cloth, the surface of which has a non-slip property such as thermoplastic elastomer or silicone resin. It means both the treated one, the one whose outer shape is gradually enlarged from the middle part toward the front part, and the one which is provided with anti-slip property by painting or the like. Furthermore,
The grip portion 7 may be colorless or colored.

The operation of the example of FIG. 1 will be described. When the grip portion 7 is gripped and the barrel 1 is rotated, as a result, the grip portion 7 moves in the longitudinal direction. Therefore, the grip portion 7 is rotated at a desired position (a distance from the grip portion to the writing portion 4). Stop. After that, when gripping and writing the grip portion 7, the engagement state of one of the inner protruding portions 8 and the screw portion 6 and the engagement of at least one of the other inner protruding portions 8 and the screw portion 6 Since the states are different from each other, the gripping portion 7 is supported by the strong engaging portion in the engaged state, absorbs the writing pressure, serves as a fixing means, and the grip portion 7 does not move backward.

Incidentally, as a fixing means at the time of writing, at least one of the other inward projecting portions 8 and the screw portion 6 may have different engagement states, but if more secure fixing is desired, In addition to the engagement between the inwardly projecting portion 8 and the screw portion 6, as shown in FIG. 4, an outwardly projecting portion 2a may be formed on the front barrel 2 to serve as a fixing assisting means. The projection 2a has a plurality of projections formed in a circumferential shape in the figure, but it may be formed as an annular projection, a projection that is long in the longitudinal direction, or a dot-shaped projection, or the front barrel 2 It can be used in various ways such as by forming it separately from (for example, by forming a ring member by fixing it to a tip). Further, instead of this projection 2a, or a similar projection may be formed on the surface of the barrel body 3 which is in contact with the grip 7 together with the projection 2a.

Further, as a further example of the fixing assisting means, as shown in FIG. 5, an inward projection for engaging the inner surface of the grip portion 7 with the outer surface of the shaft cylinder 1 (screw portion 6 in the figure). Forming the portion 7a, the shape of such a protrusion 7a is as follows.
For example, those that form a plurality of protrusions in a circle, those that form an annular protrusion, those that form long protrusions or dot-like protrusions in the longitudinal direction, and the internal cross-sectional shape of the grip portion 7 is a pentagon, hexagon, etc. Various shapes such as engaging the outer surface of the barrel 1 at approximately the middle portion of each side, and forming the screw without engaging the screw portion 6 of the barrel 1 at the forming position. Various types can be adopted, such as forming the rear portion of the grip portion 7 so as to be engaged with the shaft cylinder main body 3 which is not provided, or forming the front portion of the grip portion 7 so as to be engaged with the front shaft cylinder 2. When the protrusion 7a is formed on the front portion and / or the rear portion of the grip portion 7, a large number of annular grooves or annular protrusions may be formed on the front barrel 2 and / or the barrel body 3 that engage with the protrusion 7a. Further, as the number of the protrusions 7a, one example is shown in the drawing, but the number is arbitrary, but more preferably a plurality, more preferably three. The protrusions 2a and 7a are provided on the grip 7
A frictional resistance is generated between the inner surface of the shaft 1 and the outer surface of the barrel 1 and functions as a fixing means (movement preventing means) for the grip portion 7 during writing.

In addition, in FIG. 1, description has been made of a writing tool applied to a ballpoint pen. However, in addition to the ballpoint pen, it can be applied to various writing tools such as a mechanical pencil, a fountain pen and a marking pen. It is particularly suitable for a writing instrument that does not need a cap. The reason is that when applied to a writing instrument such as a water-based ballpoint pen that causes a problem in use when the ink is dried, it is generally necessary to attach the cap to the front barrel. This is because there is a problem in terms of reliable attachment / detachment of the cap or it is necessary to devise a fastening structure. The same applies to the following examples. The same applies to the applicator.

FIG. 6 shows another embodiment of the grip portion according to the present invention. The difference from the embodiment of FIG.
Is formed on the inner surface of the screw portion 9 of the shaft cylinder 1 and the screw portion of the grip portion 7 and the screw shape of the screw portion 6 of the shaft cylinder 1 are devised. . 7 to 10 show specific examples of the screw shapes of the grip portion 7 and the screw portion 6 of the barrel 1.

In the example of FIG. 7, the thread angle of the thread portion 6 of the barrel 1 and the thread angle of the thread portion 9 of the grip portion 7 are made different, and one thread portion of the thread portion is different from the other. By engaging the inclined surface of the valley portion of the screw thread in a biting manner, the engaging force between the two is increased, and during writing, the writing pressure is absorbed, which serves as a fixing means and moves the grip portion 7 rearward. Is to prevent. In the figure, the thread crest of the threaded portion 6 of the barrel 1 is engaged with the inclined surface of the trough of the threaded portion 9 of the gripping portion 7 in a biting manner. The thread ridges of the screw section 9 of No. 7 may be engaged with the inclined surface of the valley section of the thread of the screw section 6 of the barrel 1 in a biting manner. Further, in this example, it is preferable that one material is hard and the other material is soft in order to engage the crest portion of one screw thread with the inclined surface of the trough portion of the other screw thread in a biting manner. .

In the example of FIG. 8, the screw portion 9 of the grip portion 7
By engaging the top part of the screw thread of the screw thread with the valley part of the screw thread of the screw part 6 of the barrel 1 to increase the engagement force between them, the writing pressure is absorbed at the time of writing, and the fixing means. Therefore, the gripper 7 is prevented from moving rearward. In the figure, the top of the screw thread of the screw portion 9 of the grip portion 7 is engaged with the trough of the screw thread of the screw portion 6 of the shaft cylinder 1 in a biting manner. The top of the screw thread of No. 6 may be engaged with the trough of the screw thread of the screw section 9 of the grip section 7 in a biting manner. Also in this example, similarly to the example of FIG. 7, it is preferable that one material is hard and the other material is soft.

In the example of FIG. 9, a groove 6a is formed at the top of the screw thread of the screw portion 6 of the shaft cylinder 1, and the top of the screw thread having the groove 6a is formed on the screw thread of the screw portion 9 of the grip portion 7. It engages with the valley portion by press contact, absorbs the writing pressure during writing, and serves as a fixing means to prevent the grip portion 7 from moving rearward. In the drawing, a groove 6a is formed at the top of the screw thread of the screw portion 6 of the shaft cylinder 1, and the top of the screw thread having the groove 6a is pressure-contacted with the valley portion of the screw thread of the screw portion 9 of the grip portion 7. Although they are engaged with each other, a groove is formed at the top of the screw thread of the screw portion 9 of the grip portion 7, and the top portion of the screw thread having the groove is press-fitted to the valley portion of the screw thread of the screw portion of the barrel. As shown in FIG. 10, the grooves 6a may be formed on both the tops of the threads of the threaded portion 6 of the barrel 1 and the tops of the threads of the threaded portion 9 of the grip 7. May be. Also in this example, similarly to the example of FIG. 7, it is preferable that one material is hard and the other material is soft.

Incidentally, in the example of FIGS. 7 to 10, as in the above-described embodiment, a protrusion can be formed as a fixing assisting means for the gripping portion during writing.

In the present invention, various modifications other than those described above are possible. For example, if an antibacterial material is added to the material of the grip, the occurrence of mold or the like on the surface of the grip due to adsorption of sweat. It is useful in the sense of preventing. As such an antibacterial material, commercially available materials (for example, Amenitop of Matsushita Electric Industrial Co., Ltd., Biocomposite Powder of Koa Glass Co., Ltd., etc.) may be used.

[0019]

According to the present invention, the engagement state between the screw portion formed on the surface of the barrel and the inwardly projecting portion of the inner surface of the grip portion or the screw portion is devised. (EN) Provided is a writing tool which can be moved and selected in a longitudinal direction by a relatively simple operation, and which can be securely fixed without moving due to a writing pressure during writing, and a gripping portion structure in an applicator. It has the effect of being able to do so.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing a first embodiment with a part omitted.

FIG. 2 is a partially cutaway perspective view showing a main part of FIG.

FIG. 3 is a diagram illustrating an engagement state between an inward protruding portion of a grip portion and a screw portion of the grip portion.

FIG. 4 is a partial vertical cross-sectional view showing another embodiment with a part omitted.

FIG. 5 is a partially cutaway perspective view showing another embodiment of the grip portion.

FIG. 6 is a partial vertical cross-sectional view showing another embodiment with a part omitted.

FIG. 7 is a diagram illustrating an engagement state between a screw portion of the grip portion and a screw portion of the grip portion in FIG.

FIG. 8 is a diagram illustrating an engagement state between a screw portion of another grip portion and a screw portion of the grip portion.

FIG. 9 is a diagram illustrating an engagement state between a screw portion of another grip portion and a screw portion of the grip portion.

FIG. 10 is a diagram for explaining an engagement state between a screw portion of another grip portion and a screw portion of the grip portion.

[Explanation of symbols]

 1 Shaft Cylinder 2 Front Shaft Cylinder 2a Projection 3 Shaft Cylinder Body 4 Writing Part 5 Middle Shaft 6 Screw Part 6a Groove 7 Gripping Part 7a Projection 8 Inward Projection 9 Screw Part

Claims (4)

[Claims] 1. A screw portion is formed on a surface of a shaft cylinder, and at least a plurality of inward projections formed on an inner surface of a cylindrical gripping portion are engaged with the screw portion to be rotatable on an outer surface of the shaft cylinder. It is arranged so as to be movable in the longitudinal direction, and at any grip position, the engagement state of one of the inward protrusions with the screw portion of the shaft cylinder and at least one of the other inward protrusions.
Structure of the writing instrument and the applicator in which the engagement state between the shaft and the threaded portion of the barrel is different. 2. A screw part is formed on the surface of the shaft cylinder, and the screw part formed on the inner surface of the cylindrical gripping part is screwed onto the screw part so as to be rotatable on the outer surface of the shaft cylinder and movable in the longitudinal direction. The angle of the screw thread of the screw portion of the shaft cylinder and the angle of the screw thread of the screw portion of the gripping portion are different, and the thread portion of the screw thread is different from that of the valley portion of the other screw thread. A gripping part structure in a writing instrument and an applicator engaged with an inclined surface in a biting manner. 3. A screw part is formed on the surface of the shaft cylinder, and the screw part formed on the inner surface of the cylindrical gripping part is screwed onto the screw part so as to be rotatable to the outer surface of the shaft cylinder and movable in the longitudinal direction. And a grip portion structure in a writing instrument and an applicator, in which at least one screw thread crest of the screw portion is engaged with a trough portion of the other screw thread in a biting manner. 4. A screw part is formed on the surface of the shaft cylinder, and the screw part formed on the inner surface of the cylindrical gripping part is screwed onto the screw part so as to be rotatable on the outer surface of the shaft cylinder and movable in the longitudinal direction. A groove is formed on at least one of the top of the screw thread of the threaded portion of the shaft cylinder and the top of the thread of the threaded portion of the grip portion, and the top of the thread of the other threaded portion is formed. A gripping part structure in a writing instrument and an applicator that are pressed into engagement with a valley.