JPS6094397A - Writing utensil - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention makes it possible to freely apply writing pressure on a writing instrument using pressure from the palm surface, effectively reducing the amount of effort required to grasp the writing shaft, and reducing the amount of effort required to 1M. The purpose of this invention is to disclose a writing instrument structure that is less sensitive.

Therefore, for various writing instruments in the past, certain limits were placed on the diameter of the shaft due to various reasons such as gripping and use, and the pressing ability of the writing instrument against the writing instrument surface was limited. When using the writing instrument, a gripping force greater than one can imagine is required, and this may result in a gradual decrease in writing pressure or stiffness as the writing instrument is continuously used.
This was thought to be a factor in optic nerve fatigue.

In particular, the inconvenience of heat is noticeable in ballpoint pens, mechanical pencils, pencils, etc., which require much pressure when writing, and in general fountain pens, etc. The same type of inconvenience is caused by continuous use over a long period of time.

The writing instrument according to the present invention has been proposed in particular in view of the inconveniences of conventional writing instruments, and it is possible to reduce the pressure on the writing surface during writing from the surface of the palm rather than from the fingers gripping it. Rather than simply holding the writing instrument, the fingertips are designed to effectively prevent the occurrence of grip fatigue during continuous use, and to easily and reliably ensure the writing condition based on the same writing pressure. It is designed to ensure that

The writing instrument according to the present invention has a scale part that comes into contact with the gripping palm surface of the writing instrument on the circumferential side of the writing instrument shaft, in particular, in order to achieve the desired effect of improving the quality of the writing instrument. In view of this, the following specific embodiments and considerable design changes accompanying these embodiments are planned.

Hereinafter, a typical embodiment of the writing instrument according to the present invention will be described with reference to the attached drawings. (1) is a general writing instrument shaft, (2) is a writing instrument core, and (3) is a writing instrument core. This is an example of a general ballpoint pen showing a head cap.

Of course, the present invention is not limited to this illustrated example of a ballpoint pen, and can be applied to all writing means such as a knock-type ballpoint pen, a pencil, a general pencil, a general ink pen, and a permanent type. However, it was planned to be structured effectively.

A contact writing pressure rod (4) is provided on the circumferential side of the writing instrument (1), and when using the writing instrument, the palm of the hand is pressed so as to press the lead (2) against the writing surface with a predetermined pressure. The rod (4) is positioned on the surface.

In addition, from the viewpoint of smooth and effective use of the writing instrument, this rod (4) should be installed from No. 1 (part (4) a) to the free end (4).
) b is tilted gently in the direction of the core (2), and the scale part (4 ) C, and the weighing portion (4) d, which is more gently sloped than the weighing portion (4) C, was separately planned to have a curved rod shape that closely abuts the pear 1 character surface.

Also, in principle, this rod (4) is to be molded integrally with the shaft (1), and not only molding by injection molding but also integral adhesive processing of the rod (4) is planned.

Next, in the embodiment shown in FIG. 2, the rod (4) and the shaft (1) are made of a different material, particularly soft PVC, various synthetic rubbers such as butyl rubber, and other materials with elasticity and flexibility. The writing instrument is made of a material that has the same properties, and further prevents the feeling of fatigue during continuous use of the writing instrument, and also gives the writing instrument the property of being able to freely change the application of writing pressure.

Further, in the embodiment shown in FIG. 3, the rod (5) is prepared as a separate material from the shaft (1) of the writing instrument, and the pivot (5) a of this rod (5) is formed. It is designed to be used as a general writing instrument as well as to be stored and carried, and the rod (5) has a drawer and a protrusion so that it can withstand use as a contact writing pressure rod.

In addition, the rod (5) is made into a pipe-shaped piece with a split (5) b on the - side, making it soft in contact with the palm surface, and both pieces (5) c of the split (5) b. , (5) When folding, hold the shaft (1) with c.(5)
This is to prevent unexpected splashing out. In addition, with the intention of improving the storage condition of the rod (5) with respect to the shaft (1), a recess (1) a is provided on the circumferential surface of the shaft (1), and the rod (5) is configured to be accommodated in this recess (1) a. It was planned that the edge of the recess (1)a would be the edge of the lowering end of the rod (5).

Furthermore, in the embodiment shown in FIG. 4, the rod (6) pivotally attached to the support (1) is used in an upright position from the direction of the core (2). The stopper (6)a holding the stopper (6)a can be freely retracted from @b (1) together with the rod (6), and the rib (6)b supports the pull-out position of the par (6)a. This is how it was done.

Next, in the embodiment shown in Fig. 5, the shaft (1) and the rod (7) are prepared as separate pieces, and these can be attached and used as needed. There is a split groove (7) at the base of the rod (7) that communicates each opening.
)A is provided integrally with the shaft cylinder (7)b, and a tightening ring (7)c is attached from the double direction of this cylinder (7)b.
The shaft (1) and the rod (7) are fitted together to form an integral connection. In order to further ensure the fastening of the tube (7)b, the fitting surface (7)b'' of the ring (7)c in the tube (7)b was fixed to the edge of the tube (7)b. The wall thickness is gradually increased inwardly, and when the ring (7) c is fitted, the groove (7)
) Part a can be tightened more reliably.

Further, in the embodiment shown in FIG. 6, the rod (8) itself, which is a separate member, is rotatable, and the mounting tube (8) is rotatable.
8) Pivotally attach the rod (8) to (8) b, and attach the rod (8) to a.
) A split (8) c is provided on both sides of the lower part of a, and a male screw (8) d is provided on the 0 part of this split (8), and a female thread is attached to this cotton 4 = J ring (8) e. Screw on the shaft (1)
The rods (8) are fixedly attached at various locations.

Furthermore, in the embodiment shown in FIG. 7, one cylinder (9) a is attached to the base of the rod (9), with the intention of attaching the rod (8), and in particular, ensuring reliable attachment and removal. Prepare this cylinder (9)
A is made into a cylinder with a female screw, and an M screw (1) b is provided on the outer periphery of the shaft (+).

The embodiment shown in FIG. 9 then includes a rod (10)
For installation, attach the base (10) a to the thick part, and the (1) meat hRR portion (10) a NiIAJNr (1
0)b, (1o)b are provided, and the groove (10)b is raised on the circumferential side of the holder (1) so that a retaining hole (IQ)c is continuously provided deep inside the lower surface of the groove (10)b. Nail (1)c
, (1) c is adapted to be removably engaged.

In addition, the embodiment shown in figure ``@''fIrJ7 in the description J- allows the person using the writing instrument to comprehensively take into consideration the writing instrument he/she uses, finger size, palm size, desired writing pressure, etc. The feature is that the abutment rod and pressure rod can be installed and used in the most ideal position, and the position can be adjusted according to the degree of fatigue due to continuous use. This allows for arbitrary modifications. Furthermore, in such a configuration, since the writing instrument body and the mounting were constructed separately from the contact pressure rod used, the existing writing instrument body could be used as is. Furthermore, in the event that the writing instrument in use becomes unusable due to wear and tear of the ink, the writing instrument has the feature that the contact pressure rod can be easily attached to another writing instrument and used.

The writing instrument according to the present invention is expected to have specific effects on the above-mentioned objects due to the characteristic structure described above, and is particularly suitable for continuous use of hard-lead ballpoint pens, mechanical pencils, or pencils. This has been particularly effective in preventing fatigue, and by reducing the amount of writing pressure applied, it has improved writing efficiency and made it possible to create beautiful sentences with accurate writing pressure.

In the past, creating carbon transfer slips using this type of ballpoint pen, etc. required both the writing pressure required for writing with a ballpoint pen and the writing pressure required for transfer, and this required a unique writing method. This increased the burden on the heel of the wrist and was thought to be the cause of a decrease in grip strength or a unique grip. Further, the continuous operation of applying the unique pressure of the pen causes stiffness in the wrists, upper arms, and shoulders, which has been considered to be the cause of headaches and decreased visual acuity.

The writing instrument according to the present invention is capable of eliminating such inconveniences when writing by simply suppressing the abutting writing pressure rod on the palm surface.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a writing instrument according to the present invention;
FIGS. 2 to 7 are perspective views showing other embodiments, FIG. 8 is a perspective view showing the state of use, and FIG. 9 is a cutaway side view of still another embodiment. In the figure, (1)...axis, (2)...core, (3)...
・Cap, (4) to (lO)... Indicates a rod. Figure l Figure 2 Figure 3

Claims (5)

[Claims] (1) A writing instrument characterized in that a scale portion that comes into contact with the gripping palm surface of the writing instrument is protruded from the circumferential side of the writing instrument shaft. (2) The writing instrument according to claim 1, characterized in that the scale portion is pivotally attached to the writing instrument shaft so as to be freely foldable. (3) A writing instrument according to claim 1, characterized in that the scale section described in item jiiii is an elastic flexible scale section. (4) The writing instrument according to claim 1, wherein the scale portion is detachably attached to the writing instrument shaft. (5) The writing instrument according to claim 1, wherein the rod portion is such that the protruding end of the scale portion is gently inclined from the shaft head of the writing instrument toward the shaft end. .