JPH0415518Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a writing instrument that prevents the writing part of the cursive from being exposed through the opening at the tip of the barrel when held in a pocket of clothing. This relates to the cursive writing mechanism.

(Prior Art) There are various types of writing body ejection and retraction mechanisms that cause the writing part of the writing body to emerge and retract from the tip opening of the barrel by moving the pushing member back and forth.

(Problem to be solved by the invention) A writing instrument equipped with this type of cursive body retraction mechanism is used when the cursive writing instrument is not exposed from the opening at the tip of the barrel, when the writing instrument is inserted into the pocket of clothes etc. In many cases, it is held, and at that time, the pressing part of the pressing member exposed outside the shaft cylinder is sometimes pressed. As a result, the cursive writing mechanism is activated and the writing part of the cursive is exposed from the opening at the tip of the barrel.
There is a disadvantage that the ink from the writing section stains clothing.

(Means for Solving Problems) The present invention provides the push member with a concave portion having an abutting portion on the side of the push portion, and provides the actuation blocking member with a protruding portion and a peripheral portion to prevent the actuation blocking member from protruding. The part is located near the contact part of the pushing member and faces the recessed part, and the outer part is exposed immovably in the longitudinal direction of the shaft cylinder through a through hole in the shaft cylinder provided at a position opposite to the clip, The problem is solved by interposing an elastic member between the pushing member and the actuation blocking member.

(Function) When the writing instrument is held in a clothing pocket or the like with its writing part recessed into the barrel, the operation blocking member moves in the direction in which the protruding part is recessed into the recessed part of the pushing member due to the fabric. However, when the writing instrument is held in a pocket or the like, the protrusion of the actuation blocking member is recessed into the recess of the push member. When the protruding part of the pushing member is pressed, the collision part of the recessed part collides with the protruding part, which acts as a safety device and prevents the pushing member from moving forward, so that the cursive body ejection mechanism does not operate, and the writing part of the cursive body Do not expose from the opening at the tip of the tube. When the writing instrument is taken out from a pocket or the like, the actuation blocking member moves in the opposite direction to the above-mentioned direction, the protrusion of the actuation blocking member escapes from the recessed part, and the writing body retraction mechanism can operate.

(Example) Embodiments of the invention are explained in the drawings.

In the embodiments shown in FIGS. 1 to 4, the cursive writing mechanism is configured as follows. Push member 1 is shaft cylinder 2
The shaft cylinder 2 is provided so as to be movable back and forth in the longitudinal direction, and consists of a pressing part 1b exposed from the rear end opening 2b of the shaft cylinder 2, and an actuating part 1a inserted into the shaft cylinder 2. Actuation part 1a
A locking member 4 resiliently sprung by a coil spring 3 is housed in a hole 1c formed at the tip of the shaft, and the locking portion 4a is exposed outside the shaft cylinder 2 through the long groove 2c of the shaft cylinder 2. .

The base 5d of the clip 5 is attached to the barrel 2 by the spring piece 6a of the clip fixing member 6 fixed to the inner surface of the rear end opening 2b of the barrel 2, and the front end 5a of the clip 5 is attached to the barrel 2. cutout 5
b from the engagement portion 4a of the locking member 4 to the tip opening 2a.
It is located on the side and contacts the outer surface of the shaft cylinder 2. When the rear end 5c of the clip 5 is pressed, it swings outward about the base 5d, and the front end 5a is separated from the outer surface of the shaft tube 2.

The distance between the locking part 4a of the locking member 4 and the notch part 5b of the clip 5 is such that the writing part 7a of the writing body 7 is
This corresponds to the amount of movement that can be exposed from the tip opening 2a.

The actuating part 1a of the pushing member 1 is provided with a recessed part 1f having a contact part 1e on the pushing part 1b side, on the side opposite to the clip 5 side from the mounting surface 1g on which the elastic member 9 made of rubber material is placed. . The actuation blocking member 10 has a protruding portion 10a and an outer side portion 10b with which the contact portion 1e of the pusher member 1 collides, and is elasticized by the elastic member 9 placed on the placement surface 1g of the pusher member 1, and the outer side The portion 10b is immovably exposed in the longitudinal direction of the shaft tube 2 from the through hole 2e of the shaft tube 2 provided at a position facing the clip 5, and the protrusion portion 10a is located near the abutting portion 1e and extends into the recessed portion 1f. They are facing each other.

The protruding portion 10a of the operation blocking member 10 is the pushing member 1
It is important to move the collision part 1e to a position where it can collide. When the operation blocking member 10 is hung in a pocket, when the outer side portion 10b is pressed by the cloth 11, it rotates clockwise toward the rear end opening 2b of the shaft tube 2.
The protruding portion 10a is recessed into the recessed portion 1f of the pushing member 1 (FIG. 4). In this state, even if the pressing part 1b of the pressing member 1 is pressed, the pressing member 1 stops because the collision part 1e collides with the protruding part 10a, and the writing body retraction mechanism does not operate.

The writing body 7 inserted into the barrel 2 is rebound toward the rear end opening 2b of the barrel 2 by the coil spring 8 provided between the step 7b and the step 2d inside the barrel 2. , the rear end surface of the writing body 7 is in contact with the tip end surface of the operating portion 1a of the push member 1. Then, the pushing member 1 is pushed toward the rear end opening 2b of the barrel 2, and the stepped portion 1d of the pushing member 1 collides with the end surface 6c of the clip fixing member 6, so that it does not fall out of the barrel 2.

It is the pressing part 1b of the pressing member 1 that brings it into the writing state.
By pressing the pressing member 1 and the writing 7
moves forward, and the tip 7a touches the front end opening 2a of the shaft tube 2.
be exposed from. At this time, the locking member 4 moves within the long groove 2c, and the locking portion 4a is attached to the notch 5 of the clip 5.
When reaching point b, the pushing member 1 and the writing body 7 are locked together, and the exposed state of the tip 7a is maintained.

To release the writing state, press the rear end 5c of the clip 5 to separate the tip 5a from the outer surface of the barrel 2, and the clip 5 of the locking portion 4a of the locking member 4
The lock at the notch 5b is released, and the pushing member 1 and the writing body 7 move backward and return to their original states, and the writing body 7
The tip end 7a of the shaft tube 2 is inserted into the front end opening 2a of the shaft tube 2.

In the embodiment of FIG.
It has a protruding part 10'a and an outer side part 10'b similarly to b, and further has a convex part 1 inside that protrudes outward.
0'c.

The resilient member 9' of the coil spring placed on the mounting surface 1g of the pushing member 1 is connected to the convex portion 1 of the operation blocking member 10'.
0'c inside, and the outer side 10'b is the shaft cylinder 2.
It is exposed immovably in the longitudinal direction of the shaft tube 2 through the through hole 2e, and the protruding portion 10'a faces the recessed portion 1f.

When the actuation prevention member 10' is hung in a pocket,
Similarly to the operation blocking member 10, the protrusion 10'a sinks into the recessed part 1f of the pushing member 1, and even if the pushing part 1b of the pushing member 1 is pressed, the pushing member 1 remains in the collision part 1e.
stops by colliding with the protrusion 10'a,
The cursive writing mechanism does not work.

The stepped member exposes the outer edge of the actuation blocking member from the through hole of the shaft cylinder, and has sufficient steppedness to smoothly move the actuation blocking member inward when the outer edge is pressed. It is fine as long as it is something.

(Effects of the invention) The present invention shows that when a writing instrument is hung in a pocket of clothing by using the clamping force of the clip, the operation blocking member that is moved inward by the fabric of the clothing that is clamped is Since the pushing member is prevented from moving forward, the writing body ejection/removal mechanism is not operated and the writing part of the writing instrument is not exposed outside the barrel, thereby preventing staining of clothing or the like by ink in the writing part.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of the front part of a writing instrument equipped with an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of the rear part of the same writing instrument, and Fig. 3 is a cross-sectional view taken along line 3-3 in Fig. 2. Figures 4 and 4 are longitudinal sectional views showing the operation of the operation blocking member in Fig. 2, and Fig. 5 is a longitudinal sectional view of a writing implement provided with another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Pushing member, 1b... Pressing part, 1e... Collision part, 1f... Recessed part, 2... Shaft cylinder, 2e... Through hole, 4... Locking member, 4a... Locking Part 5...
Clip, 5b... Notch, 7... Cursive, 9,
9'... Resilient member, 10, 10'... Operation blocking member, 10a, 10'a... Projection, 10b, 1
0'b...Outer area.

Claims (1)

[Scope of utility model registration request] A clip 5 that can swing toward and away from the side surface of the shaft cylinder 2
a pushing member 1 which is attached with a press member 1, has a pressing portion 1b exposed outside the shaft cylinder 2, and is movable in the longitudinal direction within the shaft cylinder 2;
A writing body retraction mechanism in a writing instrument, which has a locking member 4 that engages and disengages from the clip 5 when the tip end 7a of the writing body 7 in the barrel 2 comes out and retracts from the tip opening 2a of the barrel 2, and the push member 1 is provided with a concave portion 1f having a contact portion 1e on the pressing portion 1b side, and a protruding portion 10a.
and an operation blocking member 10,1 having a peripheral portion 10b.
0' is located near the contact part 1e of the pushing member 1, facing the concave part 1f, and the outer side part 10
b is exposed immovably in the longitudinal direction of the shaft tube 2 through a through hole 2e of the shaft tube 2 provided at a position facing the clip 5, and elastic members 9, A cursive body appearance mechanism in a writing instrument via 9'.