JPH04100895U - writing instrument cap - Google Patents

Abstract

(57) [Structure] In a writing instrument cap consisting of an inner cap 2 and an outer cap 1, a flange 4 is integrally provided below the opening end 3 of the inner cap, and the flange 4 has a slit 7 provided on the axis of the rib 6. It is further separated by an outer cap 1 and an annular space 15. [Effect] Because the brim, the slit that divides the brim, and the annular space 15 are provided, air circulation is possible when the cap is swallowed, and the pen tip may be accidentally inserted into the air circulation hole.
The cap can be attached and removed without breaking or scratching the pen tip.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to caps for writing instruments such as felt-tip pens, ballpoint pens, and felt-tip pens. It is something to do.

0002

[Conventional technology]

Conventionally, caps for writing instruments such as felt-tip pens, ballpoint pens, and felt-tip pens have been broadly categorized. Then, it can be divided into those with clips and those without clips, and further thicker. There are thick ones and thin ones. Now, when children or infants use writing instruments, they may accidentally put the cap in their mouth and drink it. There is a danger of being swallowed. In case of accidental swallowing, there is no clip. This cap is extremely dangerous as it does not allow any air flow passage.

0003 In order to improve these drawbacks, (a) Unexamined Japanese Patent Publication No. 1-157898, (b) U.S. Pat. Kaihei 1-169384, (c) Kaihei 1-169385, (d) Kaihei 1-1693 No. 86, (e) British Published Patent No. 2174374, (f) Utility Model Publication No. 2-58981 (g) German Published Patent No. 3817248, (ch) German Published Patent No. 382 No. 1195 etc. are known. Although (a) is different from the present invention, an air flow passage is provided on the outer surface of the cap. The outer diameter of the YAP increases and the amount of material required increases, resulting in an increase in cost. Furthermore, since the hole is long, it is difficult to mold it. (b) is the second component of the inner cap, which increases the cost and , when putting the cap over the pen nib, the pen nib is between the inner cap and the cap. It may get in there and scratch the pen tip. In (c), a groove is provided on the outer surface of the inner cap in the axial direction, so the thickness of the cap is reduced. It becomes thicker and costs increase. (d) has the same drawbacks as (b). (E) is close to the opening end of the cap, so if you accidentally put the pen tip into the hole, It will scratch the tip. (f) and (g) are incorrect because the air vent is near the inner cap opening. I accidentally put the pen tip in and scratched the pen tip. (H) has a structure that protects the pen core, but the air vent is movable by sliding the mold. Since it is made by

0004

[Problem that the invention attempts to solve]

This invention provides an air flow path in the conventional writing instrument cap, and also prevents the pen tip from being misplaced. Provides a cap that can be attached and removed without damaging the pen tip by inserting it into the hole in the air flow path. It is something to do.

[0005]

[Means to solve the problem]

An inner cap 2 having a sealing part 5 inside the outer cap 1 is connected and held by ribs. In the writing instrument cap, a flange 4 is continuously provided below the opening end 3 of the inner cap 2. The collar 4 is divided by a slit 7 provided on the axis of the rib 6, and A writing instrument key characterized by being separated by an outer cap 1 and an annular space 15. It is a cap.

[0006]

[Effect]

The space between the ribs 6 and 6' that connect and hold the outer cap 1 and the inner cap 2, Air 9 flows through the slit 7 and annular space formed between the collar 4 and the outer cap 1. Air 9 can be reliably circulated through 15. Furthermore, even if the pen tip 10 of a writing instrument is inserted through the open end 8 of the outer cap 1, the flange 4 has a taper from the outside to the inside, and the pen tip 10 moves along the taper into the inner cap. is inserted into the top 2. Even if the pen tip 10 touches the slit 7, the slit 7 is thinner than the pen tip 10. The tip is tapered in the same direction as the pen core insertion, so the pen tip 10 It will not scratch the surface.

[0007]

【Example】

The present invention will be specifically explained using examples. In Figures 1, 2, and 3, 1 is an outer cap, and inside it is an inner cap. 2 are installed and both are continuously held by ribs 6. The inner cap 2 is , has a sealed portion 5 at its tip and an open end 3 at its rear end. Here, the number of ribs 6 may be determined as appropriate, and is provided above the open end 3. Furthermore, the flanges 4 and 4' are integrally provided below the opening end 3 of the inner cap 2. However, its outer peripheral side surface is not connected to the outer cap 1 through the annular space 15. Further, the slit 7 divides the collar into a collar 4 and a collar 4'. Tsuba 4 and inner cap 2 are It can be separate or integrated. The slit 7 has the same slit width as the thickness t of the rib 6 (0. 3 m/m or more), and the maximum value is the diameter of the pen tip 10 and the contact with the slit 7. The dimensions are appropriately determined so as not to damage the pen tip 10.

[0008] Further, the number of ribs 6 and the number of slits 7 are the same. The reason for this is that the core pin from the open end side forming the slit 7 due to the mold configuration is shown in FIG. The tip 14 of the rib 6 is connected to the rear end surface of the rib 6 by the core pin 13 from the sealing part 5. This is because it forms the whole. As mentioned above, the writing instrument cap of the present invention can be integrally molded, and also has a pen tip of 10. Protection and air 9 circulation can be ensured. Materials such as polypropylene and Thermoplastic resins such as iron, duracon, etc., urea, phenol, polybutyl lids Thermosetting resins such as Latte, etc. can be used.

[0009]

【effect】

The present invention is structured as described above. (b) When putting the cap on the nib of the writing instrument, the nib touches the collars 4 and 4', You will be guided into the inner cap. In the unlikely event that the pen tip touches slit 7, Also, since the brim 4 and 4' are tapered, the nib 10 will slide into the inner cap. The width of the slit 7 is smaller than the diameter of the pen tip 10, so the pen No scratches on the tip. (b) Even if accidentally swallowed, an air flow path can be secured by the annular space 15 and the slit 7. Ru. (c) Since the cap has a simple structure, it is possible to securely provide air circulation holes and keep the mold safe. It can be manufactured at low cost.

0010

[Brief explanation of drawings]

[Figure 1] Plan view of the present invention

[Figure 2] I0I sectional view of the present invention

[Figure 3] Rear view of the present invention

[Figure 4] Mold diagram of A0A' cross section of the present invention

[Explanation of symbols]

1 Outer cap 2 Inner cap 3 Open end 4・4´ Tsuba 5 Sealed part 6 ribs 7 slit 8 Opening end 10 Pen tip 15 Annular space

Claims (1)

[Scope of utility model registration request] In a writing instrument cap in which an inner cap 2 having a sealing part 5 inside an outer cap 1 is connected and held by a rib, a flange 4 is provided continuously below the open end 3 of the inner cap 2, and the flange 4 has a rib 6. A writing instrument cap characterized in that it is divided by a slit 7 provided on the axis of the writing instrument, and is further separated from the outer cap 1 by an annular space 15.