JPS6345340Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a writing instrument in which the writing body is moved out and out of the opening of the barrel by rotating a clip member. A writing instrument having an improved clip member, characterized in that the contact portion of the clip member that rotates with the outer circumferential surface of the barrel is formed into two protrusions having surfaces that match the outer circumferential surface of the barrel. It is.

2. Description of the Related Art Writing instruments in which a writing body is moved in and out by rotation of a clip member have been widely known. In addition, in this type of writing instrument, the clip member rotatably attached to the barrel has the original function of clipping the writing instrument to clothing, etc., and also acts as a working medium for making the writing instrument appear and disappear. It also plays.

However, from the point of view of more securely attaching the writing instrument to clothing, etc., it is preferable to form the lower end of the clip piece that contacts the outer peripheral surface of the barrel into an uneven part as thin as possible. This leads to the problem of causing scratches on the outer peripheral surface of the shaft cylinder due to contact during operation.

The present invention attempts to solve these conflicting technical problems in this type of writing instrument with a relatively simple structure, and an embodiment thereof will be described below based on the drawings.

The clip member 1 is fixed at an eccentric position P of a rotary body 3 which is rotatably inserted into a cutout 2a of the barrel 2, and the writing body 4 does not come out or disappear from the barrel opening 2b.
This is achieved by rotating the clip member 1. That is, when the clip member 1 is rotated 180 degrees to the left or right with respect to the shaft tube 2 in FIG. The shaft cylinder opening 2b is equal to the difference between the part 5 farther from the eccentric position P and the part 6 closer to it.
The brush end 4a is exposed from the second
(see figure).

To retract the brush end 4a, it is sufficient to rotate the clip member 1 from the state shown in FIG. 2 to its original position.
As a result of this operation, the writing body 4 comes into contact with a portion 6 of the rotating body 3 near the eccentric position P, and the writing end 4a of the writing body 4 is retracted from the barrel opening 2b (see FIG. 1).

The clip member 1 consists of a clip piece 1a and a portion provided at the lower end of the clip piece 1a that contacts the outer peripheral surface 2c of the shaft cylinder.The lower end of the clip piece 1a that contacts the outer peripheral surface 2c of the shaft cylinder is provided with an appropriate interval. Two protruding pieces 7 are provided. Thus, the two protruding pieces 7 have contact portions 7a that contact the outer circumferential surface 2c of the shaft cylinder.
is formed on a surface that matches the outer circumferential surface 2c of the shaft cylinder.
The structure for attaching the protruding pieces 7 to the clip piece 1a may be determined as appropriate; for example, the protruding pieces 7 may be formed separately and attached to each other, or they may be integrally formed with the clip piece 1a. Good too.

In addition, it goes without saying that the distance between the two protruding pieces 7 and its wall thickness may be determined as appropriate as long as the writing instrument can be attached to clothing, etc.; Particularly from the viewpoint of making the garment more secure, it is advantageous to have a thin wall thickness.

As described above, the present invention is a writing instrument in which the clip member rotates with respect to the barrel and the writing body emerges and retracts from the opening of the barrel. Since the writing instrument is characterized by having two protruding pieces formed on the same surface, it is possible to securely attach the writing instrument to clothing, etc., and when the clip member rotates, it is possible to securely attach the writing instrument to clothing. , the outer circumferential surface of the shaft cylinder is no longer damaged by the contact part.

[Brief explanation of the drawing]

Figures 1 and 2 illustrate a writing instrument in which the present invention has been implemented. Figure 1 is a partially omitted cross-sectional view showing the writing instrument in a recessed state, and Figure 2 is a cross-sectional view showing the writing instrument in an exposed state. It is a sectional view with some parts omitted. 3 is an explanatory diagram of the clip member, FIG. 4 is a sectional view taken along line AA in FIG. 3, and FIG. 5 is a sectional view taken along line BB in FIG. 3. 1...Clip member, 1a...Clip piece, 2
...Axis tube, 2c...Outer peripheral surface, 3...Rotating body, 4...
...Cursive, 5... Part far from the eccentric position P, 6...
... Portion near eccentric position P, 7 ... Projection piece, 7a
...Contact part.

Claims (1)

[Scope of utility model registration request] In a writing instrument in which the writing body is moved in and out by rotating the clip member relative to the barrel, the lower end of the clip piece 1a is in contact with the outer circumferential surface 2c of the barrel 2, and the contact portion 7a is connected to the outer circumference of the barrel. A writing instrument characterized in that a clip member 1 having two protruding pieces 7 formed on a surface matching the surface 2c and spaced apart from each other is rotatably attached to the shaft tube 2.