JP2528320Y2 - Knock type writing instrument - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION In the present invention, a writing body accommodated in a barrel is moved downward by a knocking operation so that a writing tip at a lower end thereof is projected from a lower end opening of the barrel. The present invention relates to a knock-type writing instrument in which the writing body is moved upward by eliminating the locked state so that the writing tip can be immersed in the inside of the barrel.

[0002]

2. Description of the Related Art Conventionally, as a writing instrument of this type, a writing body having a locking projection on a side surface is housed inside a shaft cylinder in a vertically movable manner and urged upward by a spring. The locking portion which is moved downward by the knocking operation and engages with the above-mentioned locking projection in a state in which the writing tip at the lower end thereof protrudes from the lower end opening of the barrel to prevent the writing body from moving upward is a side surface of the barrel. There is a knock-type writing instrument provided at the lower end of an elastically deformable clip attached to the part. These writing instruments have a structure in which the locking portion at the lower end of the clip is made movable in order to eliminate the locking state, so that the number of parts is increased and the cost is increased.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a knock-type writing instrument which simplifies a mechanism for eliminating the above-mentioned locking state, reduces the number of parts, and can be provided at low cost.

[0004]

In order to achieve the above object, a knock-type writing instrument according to the present invention comprises a writing body 2 provided with a locking projection 1 on a side surface thereof, which is vertically movable inside a shaft cylinder 3 and a spring. 4, the writing body 2 is moved downward by a knocking operation, and the writing tip 5 at the lower end thereof is knocked.
An elastic deformation in which a locking portion 7 for preventing the upward movement of the writing body 2 by engaging with the locking projection 1 in a state where it is projected from the lower end opening 6 of the barrel 3 is attached to the side surface of the barrel 3. In the knock-type writing instrument provided at the lower end of the possible clip 8, the upper end and the lower end are swingable alternately inward and outward at a position slightly below the lower end of the clip on the side surface of the barrel 3 with the substantially central portion as a fulcrum. A button 9 whose upper end is located inside the lower end of the clip 8 is provided.

[0005]

When the lower end of the button 9 is pushed inward, the upper end of the button 9 swings outward and pushes the lower end of the clip 8 outward to displace it. The state of engagement between the locking projections 2 and the locking projections 1 is released.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment shown in FIG.
First, the upper end of the barrel 3 is opened, a clip mounting portion 10 is provided on the side surface of the upper end, and an axial long groove 11 is opened below the clip mounting portion 10 on the side surface. A stopper 12 protrudes from inner edges on both sides, and a support shaft 13 for attaching a button described later is provided at a lower end of the long groove 11.

Next, a writing body 2 such as a refill for water-based ball pens protrudes a locking projection 1 having a top surface perpendicular to the axial direction and a bottom surface inclined at a side surface slightly above the center. Has been established. The writing body 2 is inserted into the inside of the barrel 3 from the upper end opening, and the locking projection 1 is fitted into the long groove 11 and
2 is located below. The stopper 12 inside the long groove 11 has a shape that can pass through the elastic deformation when the locking projection 1 goes from top to bottom, but cannot pass from bottom to top. The escape is prevented. The upper end of the writing body 2 protrudes from the upper end opening of the barrel 3, and a spring 4 is provided between a step 14 provided slightly above the lower end of the writing body 2 and a step 15 at the lower end of the barrel 3. Is interposed, and the cursive body 2 is urged upward. Therefore, when the writing body 2 is in the non-knocked state, the upper end of the locking projection 1 is in contact with the lower end of the stopper 12. At this time, the lower end tip 5 of the writing body 2 is immersed in the barrel 3.

Next, the clip 8 comprises a spring plate portion 16 and a holding member 17 attached to the lower end thereof.
Is fixed to the clip attaching portion 10 of the shaft cylinder 3, the inner surface of the holding body 17 is cut out, and a locking portion 7 is provided at the same location. The clip 8 is opposed to the long groove 11 of the shaft cylinder 3, and the holding body 17 is located slightly above the support shaft 13 in the long groove 11. When the writing body 2 is knocked at the upper end protruding portion and moved downward, the locking projection 1 comes into contact with the upper surface of the clipping body 17 of the clip 8 and then passes through the inner surface side thereof, and the locking portion 7 of the clipping body 17 is moved. When the knocking pressure is released, the spring is pushed back by the spring 4 and the locking projection 1 is moved downward.
Is held in contact with the locking portion 7 of the holding member 17 by holding the upper end of the holding member 17 in that state. At this time, the tip 5 at the lower end of the cursive 2
Is projected from the lower end port 6 of the barrel 3 and can be written.

Next, the button 9 has a substantially rectangular shape.
A cutout recess 18 is provided at substantially the center of the inner surface (the surface on the swelling side), and this cutout recess 18 is fitted to the support shaft 13, and the upper end is located on the inner surface side of the clip body 17 of the clip 8. I have arranged.
The upper and lower ends of the button 9 are swingable alternately inward and outward with the support shaft 13 as a fulcrum. Therefore, when the lower end portion of the button 9 is pushed inward, the upper end portion of the button 9 is displaced outward, so that the clip 17 of the clip 8 is pushed outward and similarly displaced. The stop portion 7 is disengaged from the locking projection 1 of the writing body 2 and the locked state is released, and the writing body 2 becomes free and moves upward again by the spring 4 to immerse the writing tip 5 into the inside of the barrel 3. .

If the writing implement is stored in a pocket of clothes or the like and is to be fixed by the clip 8 without pressing the button 9, the cloth piece of the pocket enters the inside of the clip 8. The locking state of the stop projection 1 is released, and the brush tip 5 of the writing body 2 is immersed inside the barrel 3, thereby preventing the brush tip 5 from being stained by the ink and the like.

[0011]

The present invention is as described above. The writing body 2 housed in the barrel 3 is moved downward by knocking operation so that the writing tip 5 at the lower end thereof protrudes from the lower end opening 6 of the barrel 3. Since the locked state can be eliminated by pressing the button 9, the structure is simplified, the number of components is reduced, and the device can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a state in which a locking projection of a writing body is locked with a clip.

FIG. 2 is a cross-sectional view of a state in which the locking state of the locking projection of the writing body and the clip is released.

FIG. 3 is a perspective view of a shaft cylinder.

FIG. 4 is a partially cutaway perspective view of a clip clip body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking protrusion 2 Writing body 3 Shaft 4 Spring 5 Brush tip 7 Locking part 8 Clip 9 Button 11 Long groove 12 Stopper 13 Support shaft 16 Spring plate part 17 Clamping body 18 Notch recess

Claims (1)

(57) [Scope of request for utility model registration] 1. A writing body 2 provided with a locking projection 1 on a side surface is housed inside a shaft cylinder 3 in a vertically movable manner and urged upward by a spring 4, and the writing body 2 is knocked. When the pen tip 5 at the lower end is moved downward to protrude from the lower end opening 6 of the barrel 3, the engaging part 7 that engages with the above-mentioned engaging projection 1 and prevents the writing body 2 from moving upward is pivoted. In the knock-type writing instrument provided at the lower end of the elastically deformable clip 8 attached to the side of the cylinder 3, the upper and lower ends of the side of the shaft cylinder 3 slightly below the lower end of the clip with the substantially central portion as a fulcrum. A knock-type writing implement, characterized in that a button 9 whose parts are swingable inward and outward alternately and whose upper end is located inside the lower end of the clip 8 is provided.