JPH0732113Y2 - Writing instrument - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument that is compatible with other writing instrument parts and allows common parts.

[0002]

2. Description of the Related Art Various structures for fixing a clip to a barrel of a writing instrument are known and put into practical use. If the knock member protrudes from the tail end opening of the barrel, such as with a knock type ballpoint pen or mechanical pencil,
Since it is necessary to make effective use of the inside of the shaft cylinder, an annular fixing part is integrally formed at the base end of the clip, and the fixing cylinder having a collar part for decoration is inserted into the annular fixing part of the clip. In this state, it is often fitted in the tail end opening of the shaft cylinder, and the fixed portion of the clip is often held under pressure between the collar portion of the fixed cylinder and the tail end edge of the shaft cylinder. If such a clip fixing structure is adopted, the clip fixing member does not project into the shaft cylinder, and the inside of the fixed cylinder can be effectively used. At this time, in order to securely fix the fixed cylinder to the shaft cylinder and prevent the clip from falling off,
The locking projection is formed on the outer peripheral surface of the fixed cylinder, the locking hole is formed on the inner peripheral surface of the shaft cylinder, and the locking projection is engaged with the locking hole. The locking projection may be formed on the inner peripheral surface of the shaft cylinder, and the locking hole may be formed on the outer peripheral surface of the fixed cylinder.

Further, since the barrel is a large component of a design element, a decorative ring may be attached to the tail end or the tip of the barrel even if the clip is not attached. At that time, a structure similar to that of the fixed cylinder is fitted into the tail end opening and the tip opening of the shaft cylinder, and the flange portion is used as a ring. In many cases, a locking projection and a locking hole are formed on the inner peripheral surface, and the locking projection is engaged with the locking hole.

As described above, in order to engage the locking projection with the locking hole, the locking projection and the locking hole of the fixed cylinder and the shaft cylinder must be formed at the same position when assembled. I have to. Therefore, conventionally, the positions of the locking projections and the locking holes are individually designed only for the writing instrument and are not interchangeable. In addition, when the clip is attached, the vertical width of the fixed portion of the clip differs depending on the writing instrument, and thus the individual designs are made in this case as well, and there is no compatibility. Therefore, the standardization of parts has not progressed, which has been an obstacle to cost reduction.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a writing instrument in which a shaft cylinder and a fixed cylinder or a clip are compatible with each other and parts can be commonly used.

[0006]

The structure of the present invention and the operation thereof are as follows. A fixed cylinder having a flange for decoration is inserted into an annular fixing portion of a clip and fitted into a tail end opening of a shaft cylinder, and a fixing portion of the clip. In a writing instrument in which the collar is clamped by the collar portion of the fixed barrel and the tail end of the barrel, a locking protrusion is formed on the outer peripheral surface of the fixed barrel or the inner peripheral surface of the barrel, and the inner peripheral surface of the barrel or the fixed barrel is fixed. A first locking hole is formed on the outer peripheral surface of the cylinder, and a second locking hole is formed ahead of the first locking hole by a distance equal to the vertical width of the fixing portion of the clip, and the locking projection is formed. It is characterized by being engaged with the first locking hole.

That is, on the inner peripheral surface of the shaft cylinder, a second distance is equal to the vertical width of the fixing portion of the clip from the first locking hole with which the locking projection of the fixed cylinder is engaged when the clip is mounted. Since the locking hole is formed, when the clip is not attached, the locking protrusion of the fixed cylinder engages with the second locking hole. Therefore, although the collar portion of the fixed barrel serves as a decorative ring, the shaft barrel and the fixed barrel can be the same as the writing instrument having the clip, and the parts can be shared. The same effect can be obtained by forming the locking projections on the inner peripheral surface of the shaft cylinder and providing the first locking projections and the second locking projections on the fixed cylinder.

Further, even between writing instruments having different vertical widths of clip fixing portions, a plurality of locking holes having different axial positions are formed on the inner peripheral surface of the shaft cylinder or the fixed cylinder to fix the clip fixing portions. If the locking projection is engaged with one of the locking holes according to the vertical width of the shaft, the shaft cylinder and the fixed cylinder can be made common.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. In FIG. 1, a first locking hole 11 and a second locking hole 12 are provided at predetermined positions from the tail end edge of the synthetic resin cylinder 1.
Are formed. The first locking hole 11 and the second locking hole 12 may be through holes to form a double structure in which the shaft cylinder 1 is covered with a cosmetic outer cylinder. The clip 2 is integrally formed with an annular fixing portion 21 on the base end side thereof. The inner diameter of the fixed portion 21 is equal to the inner diameter of the barrel 1. Here, if the vertical width of the fixed portion 21 is L, the distance between the first locking hole 11 and the second locking hole 12 is also L. Similarly, the fixed cylinder 3 made of synthetic resin has an outer diameter equal to the inner diameters of the shaft cylinder 1 and the fixing portion 21, but has a collar portion 31 serving as a decorative ring formed at one end thereof and locked at a predetermined position on the outer peripheral surface. The protrusion 32 is formed. Locking protrusion 32
Has an inclined tip and has the same shape as one saw tooth. The first locking hole 11 and the second locking hole 1 are attached to the fixed cylinder 3.
2 may be formed to form the locking projection 32 on the barrel 1, but in this case, the locking projection 32 has a sawtooth shape with the tail end side inclined.

Therefore, the fixed cylinder 3 is fixed to the shaft cylinder 1 and the fixed portion.
When inserted in 21, the shaft cylinder 1 and the fixed cylinder 3 are slightly elastically deformed in the process, and the locking projection 32 moves forward while sliding on the inner peripheral surface of the shaft cylinder 1 to engage with the first locking hole 11. To meet. Therefore, the fixing portion 21 is pinched by the tail end edge of the shaft cylinder 1 and the collar portion 31 of the fixed cylinder 3, and the clip 2 is firmly held. Although mechanical components such as a ballpoint pen and a mechanical pencil are built in the barrel 1, their illustration is omitted.

Next, as shown in FIG. 2, when the clip is not used, the fixed cylinder 3 is directly inserted into the tail end opening of the shaft cylinder 1. In this process, the locking projection 32 engages with the first locking hole 11, but since the tip of the locking projection 32 is inclined, when the fixed cylinder 3 is further inserted, the locking projection 32 is first locked. Hole 11
It comes off and engages with the second locking hole 12. At this time, the first
Since the distance between the locking hole 11 and the second locking hole 12 is equal to the vertical width of the fixed portion 21, the collar portion 31 of the fixed barrel 3 abuts the tail end edge of the shaft barrel 1, and the collar portion 31 is decorated. Play the role of. As shown in FIG. 3, the fixed barrel 3 may be inserted from the front end opening of the shaft barrel 1. In this case, the front port 4 is fixed to the fixed barrel 3.
Thus, the same barrel 1 with or without the clip 2
The fixed cylinder 3 can be used. That is, the shaft cylinder 1 and the fixed cylinder 3 can be made compatible with other writing instruments.

Further, when attaching the clips 2 having different vertical widths of the fixing portion 21, although not shown, the locking holes are provided according to the kind of the clips, and the locking projection is locked by any one of the clips. By engaging with the holes, the shaft cylinder 1 and the fixed cylinder 3 can be made common regardless of the vertical width dimension of the fixing portion 21 of the clip 2.

[0013]

As described above, according to the present invention, the fixed cylinder having the decorative collar is inserted into the annular fixing portion of the clip and fitted into the tail end opening of the shaft cylinder to fix the clip. In a writing instrument in which the portion is clamped by the collar portion of the fixed barrel and the tail end edge of the shaft barrel, a locking protrusion is formed on the outer peripheral surface of the fixed barrel or the inner peripheral surface of the barrel to fix the inner peripheral surface of the barrel or the fixed body. A plurality of locking holes are formed on the outer peripheral surface of the cylinder, and the vertical width of the fixing part of the clip is different,
When the clip is not used, the locking projection engages with one of the locking holes, so the shaft tube and the fixed tube are compatible with other writing tools, and parts can be shared. Becomes

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is an explanatory diagram in which the embodiment of the present invention is applied to another writing instrument.

FIG. 3 is an explanatory diagram in which the embodiment of the present invention is applied to another writing instrument.

[Explanation of symbols]

1 Shaft cylinder 2 Clip 3
Fixed cylinder 4 Front port 11 First locking hole 12
Second locking hole 21 Fixed part 31 Collar part 32
Locking protrusion

Claims (2)

[Scope of utility model registration request] 1. A fixed cylinder having a flange portion for decoration is inserted into an annular fixing portion of a clip and fitted into a tail end opening of a shaft cylinder, and the fixing portion of the clip is the flange portion of the fixed cylinder and the shaft cylinder. In the writing instrument pinched by the tail edge of the, the locking protrusion is formed on the outer peripheral surface of the fixed cylinder or the inner peripheral surface of the shaft cylinder, and the first engagement is formed on the inner peripheral surface of the shaft cylinder or the outer peripheral surface of the fixed cylinder. A stop hole is formed, and a second lock hole is formed ahead of the first lock hole by a distance equal to the vertical width of the fixing portion of the clip, and the lock protrusion is engaged with the first lock hole. A writing instrument characterized by matching. 2. A fixed cylinder having a flange portion for decoration is inserted into an annular fixing portion of the clip and fitted into a tail end opening of the shaft cylinder, and the fixing portion of the clip is the flange portion of the fixed cylinder and the shaft cylinder. In the writing instrument pinched by the tail edge of the, the locking projection is formed on the outer peripheral surface of the fixed cylinder or the inner peripheral surface of the shaft cylinder, and the axial line is formed on the inner peripheral surface of the shaft cylinder or the outer peripheral surface of the fixed cylinder. A writing instrument characterized in that a plurality of locking holes having different directional positions are formed, and the locking projection is engaged with any one of the locking holes according to the vertical width of the fixing portion of the clip.