JP2581871Y2 - Anti-slip device for writing instruments - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-slip device for a writing instrument such as a ball-point pen and a mechanical pencil.

[0002]

2. Description of the Related Art A fingertip on the tip side of a writing instrument such as a ball-point pen or the like is provided with irregularities so that the writing instrument can be easily held. You may feel pain. For this reason, it has recently been practiced to dispose a rubber elastic body on the finger contact portion. However, the work of attaching the elastic body to the finger contact portion is quite complicated, and in order to avoid the complexity, an elastic material is required. Means is adopted in which the body is formed into a cylindrical shape and the fingertip portion of the writing instrument main body is fitted into the cylindrical body.

[0003]

In the above-mentioned conventional example, the elastic tubular body is simply fitted into the finger holding portion. However, the fitted state cannot be maintained due to the temporal change of the elastic tubular body. The elastic tubular body moves (mainly pivots around the main body), which originally made the writing work convenient, but on the contrary the writing work became inconvenient.

The present invention has been made in view of such a normal situation.

[0005]

A protruding or concave edge is formed on the outer peripheral surface of the fingertip on the tip side of the writing instrument main body, and a concave or protruding edge is formed on the inner peripheral surface of an elastic cylinder made of an elastic material such as rubber. An edge is provided at least partially along each axis direction, and the concave edge or the protruding edge of the finger contact portion is engaged with the protruding edge or the concave edge of the elastic cylinder so that the finger is attached to the elastic cylinder. This section is sandwiched.

[0006]

1 to 3 show a first embodiment of the present invention, FIGS. 1 to 3 show a second embodiment, and FIGS. 4 to 6 show a second embodiment of the present invention. FIG. 2 is a sectional view taken along the line bb of FIG. 1A, FIG. 3 is a sectional view taken along the line bb of FIG. 1, FIG. 4 is a partially cutaway front view, and FIG. 4 is a sectional view taken along the line cc of FIG.
It is a line sectional view.

In the drawing, reference numeral 1 denotes a writing instrument main body, 2 denotes a fingertip on the tip side of the main body 1, 3 denotes a tip member screwed to the tip of the main body 1, 4
Denotes an elastic cylinder made of a rubber material, and the elastic cylinder 4 may be made of a synthetic resin.

[0008]

First Embodiment In the first embodiment shown in FIGS. 1 to 3, the outer diameter of the fingertip 2 is made smaller than the outer diameter of the main body 1 so that
At the rear end portion of the outer peripheral surface 2 ′, a pair of ridges 7, 7 along the axial direction of the finger contact portion 2 are provided at opposing positions. A pair of recessed edges 8, 8 are provided at the upper position of the extension so as to correspond to the ridges 7, 7 and the recessed edges 8, 8, respectively. The elastic cylinder 4 provided with the rims 9, 9 or the ridges 10, 10 is fitted into the finger cylinder 2 so that the finger cylinder 2 is inserted into the elastic cylinder 4, Recessed edges 9, 9 of the elastic cylindrical body 4 are provided on the protruding edges 7, 7, and protruding edges 1 are provided on the concave edges 8, 8.
The elastic member 4 is interposed between the distal end member 3 and the main body 1 by screwing the distal end member 3 to the distal end of the main body 1.

[0009]

The [Second Embodiment] FIG. 4 to that of the second embodiment shown in FIG. 6, the outer diameter of the finger hold 2 forms the outer diameter and the same diameter of the main body 1, the rear end of the finger hold 2 side One protruding edge 7 and one protruding edge 8 are provided at the tip, and the corresponding protruding edge 9 and protruding edge 1 are provided.
0 is provided on the elastic cylinder 4 side, and the remaining points are almost the same as in the first embodiment.

[0010]

[Effect of the Invention] Since the present invention has the configuration as described above,
Since the elastic cylinder does not rotate with respect to the main body,
Writing work can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing the first embodiment with the inside thereof omitted;

FIG. 2 is a cross-sectional view taken along line 1a-a.

FIG. 3 is a sectional view taken along the line bb in FIG. 1;

FIG. 4 is a partially cutaway front view of the second embodiment with the inside omitted.

FIG. 5 is a sectional view taken along the line c-c in FIG. 4;

FIG. 6 is a sectional view taken along line 4d-d of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Writing implement main body 2 Finger contact part 4 Elastic cylinder 7 Ridge edge 8 Recessed edge 9 Recessed edge 10 Ridge edge

Claims (1)

(57) [Scope of request for utility model registration] 1. A projection or a concave edge on an outer peripheral surface of a finger contact portion on a distal end side of a writing implement main body, and a concave or a convex edge on an inner peripheral surface of an elastic cylindrical body made of an elastic material such as rubber. Are also provided partially along the respective axial directions, and the concave edge or the protruding edge of the finger contact portion is engaged with the protruding edge or the concave edge of the elastic cylinder so as to sandwich the finger contact portion between the elastic cylinder. The anti-slip device for writing implements.