JPS623268Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an ink absorber for a marking pen.

Conventionally, as a device for configuring an air flow passage in the batting inside the ink storage body of a marking pen, there is a method in which a hollow pipe is inserted as in Utility Model Publication No. 56-23105 by the present applicant, and a method in which a hollow pipe is inserted, as in Utility Model Publication No. 56-23105, also by the present applicant. 56
-3680 and Utility Model No. 58-79385, in which a part of the outer surface of the batting is recessed to form air circulation grooves, etc., have been proposed as representative examples.

However, products that insert hollow pipes have the disadvantage that if ink accidentally enters the hollow pipe, it is difficult to remove the ink, and products that form concave air circulation grooves have the disadvantage that the edges of the grooves are difficult to remove. There are disadvantages such as there is a risk of crushing and occlusion when the section receives external pressure, and processing is complicated.

The object of the present invention is to provide an ink storage body having an air flow passage that allows ink to be easily discharged even if ink enters the air flow passage, and is free from the risk of clogging even when subjected to external pressure.

The present invention is an ink absorbing body in which the filling is covered with a pipe or sheet made of synthetic resin, and the air pipe has a hollow air pipe in which a notch is opened in a part of the peripheral wall of the filling and communicates with both ends along the axial direction. The above object is achieved by the structure characterized in that the device is inserted in the state of being inserted.

In the illustrated embodiment, a small-diameter air pipe 3 made of synthetic resin and having a series of notches 2 along the axial direction in a part of the peripheral wall is attached to the side end of the batting 1 which has a circular cross-section. , which shows an ink storage body 5 which is both covered with a cellophane sheet 4 and cut into a required length.

It should be noted that the outer peripheral portion of the batting 1 may be covered with other sheets such as a polyester sheet, or with an extruded resin pipe.

The present invention is constructed as described above, and since the air pipe inserted into the ink storage body has a notch, even if ink enters the air pipe, capillary action will occur. As a result, the ink is sucked into the outside batting from the notch and is discharged.

Furthermore, since the air pipe is made of synthetic resin and has a ring shape, it is highly elastic and can easily return to its original shape even when subjected to external pressure.

Therefore, there is extremely little possibility that the inside of the air pipe will become clogged, and smooth air circulation is guaranteed, making it possible to provide an ink storage body with good ink circulation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view of an ink storage body, and FIG. 2 is a perspective view of an ink storage body.
- A sectional view taken along line A, Figure 3 is a perspective view of the ink absorber inserted and the film, Figure 4 is Figure 3 B-B
It is a sectional view along a line. 1... Batting, 2... Notch, 3... Air pipe, 4... Cellophane sheet, 5... Ink absorber, 6... Refill.

Claims (1)

[Scope of utility model registration request] In an ink storage body in which the filling is covered with a pipe or sheet made of synthetic resin, an air pipe is inserted in a hollow state into the inside of the filling, with a notch that communicates with both ends along the axial direction in a part of the peripheral wall. An ink absorber for marking pens, which is characterized by: