JPH0337749Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention uses the elastic force of the elastic member to press the pen tip that protrudes from the tip of the barrel against the coating surface, etc., and the valve interlocked with the pen tip. This invention relates to a pen nib of an applicator with a knob-type valve at the tip, which is opened by retreating against the force.

(Prior Art) As shown in FIGS. 6 and 7, the above-mentioned applicator with a knob-type valve is designed to prevent the tip of the pen tip 101 from coming apart or collapsing even when pressed repeatedly. As such, the pen tip 101
The shaft tube 102 is made of fiber bundles or resin rods that are relatively hard but have poor liquid receptivity.
A plurality of longitudinal protrusions 104 are provided on the inner surface of the front through-hole 103, and the protrusions 104 are arranged in sliding contact with the outer surface of the pen tip 101, or the through-hole 103 has a rectangular cross-sectional shape. A pen tip 101 having approximately the same diameter as the inscribed circle is arranged in sliding contact with the pen tip 101, and a gap 105 for air exchange is formed around the pen tip 101.

(Problem that the invention aims to solve) However, with conventional pens, the tip of the pen is hard and lacks flexibility, which is expected to provide reliable pressing and durability, resulting in a hard application feel. In addition to the problem that it is difficult to use, the pen tip has poor liquid-retaining properties, so when the tip is tapped or applied, the liquid that flows out from the valve travels over the surface of the pen tip, causing air exchange. Problems have also arisen, such as droplets leaking from gaps in the coating and dripping onto the coating surface, and so-called smearing, which occurs when the liquid runs out during coating.

(Structure of the invention) The present invention opens the valve by pressing the pen tip protruding from the tip of the barrel against the coating surface, etc., and retracting the valve interlocked with the pen tip against the elastic force of the elastic member. In the applicator with a knob type valve at the tip, the liquid in the liquid storage chamber is supplied to the pen tip, and the pen tip includes a cylindrical hard member having at least one split, and the hard member. and a porous body which is closely inserted into the interior with its tip exposed, and the liquid drawn out from the liquid storage chamber by the opening of the valve is collected from the opening.
Alternatively, a liquid is supplied to the elastic body from a liquid impregnated part provided in the hard member as necessary in addition to the above-mentioned portion, and the hard member
The gist of the present invention is a pen nib of an applicator with a knob-type valve at the tip, characterized in that the outer surface is arranged so as to be in close contact with a through-hole in front of a barrel but to be slidable.

(Example) Hereinafter, the present invention will be described in detail based on an example shown in the accompanying drawings.

In FIG. 1, reference numeral 1 is a shaft cylinder,
A liquid storage chamber 2 is provided within the barrel 1 in which liquids for makeup, writing, etc. are stored. Reference numeral 3 denotes an annular body having a valve hole in the center that communicates with the liquid storage chamber 2, and the annular body 3 is clamped between the front shaft 5 and the inward protrusion 6 of the shaft cylinder 1, and is attached to the shaft cylinder 1. Fixed location. Reference numeral 7 designates a valve having a conical valve portion 8 having an inclined outer surface at the rear and a concave hole 9 at the tip, and the valve 7 is stretched between the annular body 3 and the annular body 3. It is biased forward by a resilient member 10 such as a spring, and the valve portion 8 is placed in pressure contact with the valve hole 4.
11 is arranged in a space inside the front shaft 5, and is connected to the valve hole 4.
It is a liquid-containing material made of urethane, sponge, etc. that can store more liquid that flows out.

As shown in FIG. 2, the hard member 12 is made of a cylindrical hard member 13 made of resin, metal, etc., and a soft material capable of absorbing liquid, such as urethane or sponge.
The pen nib 12 is composed of a cylindrical porous body that is closely inserted into the valve 7 with its tip exposed, and the pen nib 12 connects the protrusion 15 at the rear end of the hard member 13 to the valve 7. It is fitted into the recessed hole 9 and can be retracted together with the valve 7, with its tip protruding from the tip of the front shaft 5. Here, the hard member 13 is arranged so that its outer surface is in close contact with the through hole 16 of the front shaft 5 and is slidable. Note that the protruding portion 15 of the hard member 13 and the recessed hole 9 of the valve 7 described above are not necessarily necessary, and even if the rear end of the hard member 13 and the front end of the valve 7 are simply brought into contact, the pen tip 12 and the valve 7 The two can be linked together and moved backwards as one. Furthermore, the hard member 13 has two longitudinal splits on the side surface, and a cutout 18 is provided at the rear of the split 17 to expose the rear part of the porous body 14 and increase the area impregnated with liquid. That is, the hard member 13 has an elastic forward expansion due to the split 17, making it easy to insert the porous body 14 closely, and as shown in FIG. By arranging the hard member 13 in the through hole 16 of the front shaft 5 so as to be able to slide freely and without a gap, a gap for air exchange is created on the outer surface of the porous body 12 at the split 17. It should be noted that the above-mentioned split 17 is useful if there is at least one, and the split width also depends on the viscosity of the liquid used. For example, when using a high viscosity liquid, the split width should be widened. It can be changed in various ways,
Furthermore, the notch 18 shown as an example of a liquid-impregnated part that may be appropriate is not necessarily necessary.
Alternatively, the split 17 may be extended rearward. Reference numeral 19 denotes a resistance portion provided on the front inner surface of the hard member 13, and the resistance portion 19
A predetermined resistance is applied to prevent the porous body 14 of the pen tip 12 from sinking into the hard member 13 due to compression by the tip notch or coming out from the hard member 13 due to lateral vibration during application. It is applied to the porous body 14, and its placement position is on the porous body 1 which is easily subjected to external force during tip pricking and application.
4 is preferable, and in the illustrated example, a serrated protrusion having an inclined surface on the rear side is annularly provided on the inner surface of the hard member 13.
As shown in FIG. 4, a concave groove is formed on the front inner surface of the hard member 13 by tapping or the like, or a pin, needle, etc. is inserted into the porous body 14 from the side of the hard member 13, etc. Various shapes and forms can be adopted.

When using this example, liquid is supplied to the pen tip 12 by pressing the tip of the pen tip 12, which protrudes from the tip of the front shaft 5, against a coating surface or the like. During this pressing, the porous body 14 exposed from the hard member 13 is slightly deformed, but since the hard member 13 is immediately pressed against the coating surface, the pen tip 12 retreats, and the valve 7 that interlocks with the pen tip 12 is moved back.
The valves also move back together against the elastic force of the elastic member 10 to open the valve. When the valve 7 is opened, the front shaft 5 passes through the valve hole 4.
The liquid in the liquid storage chamber 2 that has flowed out is stored in the liquid-containing chamber 11 in the front shaft 5, and also in the hard member 13.
The porous body 14 is impregnated through the cracks 17 and the notches 18.

Regarding application after the tip notch, the liquid impregnated into the porous body 14 by the tip notch is applied to the porous body 1.
By applying the product with the tip 4, it is possible to achieve a good application feel. The liquid stored in the liquid-containing body 11 and the space in the front shaft 5 is sequentially replenished into the porous body 14 from the split 17 and the notch 18 as the liquid is consumed, so that these stored liquids are not consumed. Continuous application is possible until

As mentioned above, the pen tip 12 and the through hole 1 of the front shaft 5
6, there is only a gap for air exchange due to the split 17 of the hard member 13, that is, the outer surface of the hard member 13 excluding the split 17 is in close contact with the inner surface of the through hole 16, and is porous. Since the body 14 has excellent liquid-retaining properties and can quickly absorb liquid, the liquid supplied to the nib 12 at the time of knocking the tip and at the time of application leaks through the surface of the nib 12 and is applied. It will not drip onto the surface.

In addition, in the embodiment described above, the portion 17 of the hard member 13
Although a straight one in the longitudinal direction is shown, the shape can be one that becomes gradually narrower in the front, one that is curved or bent, and as shown in Fig. A vertical groove 20 perpendicular to the split 17 may be provided, and the vertical groove 20 may be used as a substitute for the notch 18 or may be used to temporarily store liquid.

(Effects) As described above, in the present invention, by pressing the pen tip protruding from the tip of the barrel against the coating surface, the valve interlocked with the pen tip is moved back against the elastic force of the elastic member and opened. In an applicator with a knob-type valve at the tip of which the liquid in the liquid storage chamber is supplied to the pen tip by valving, the pen tip includes a cylindrical hard member having at least one split, and the hard member. It is composed of a porous body that is closely inserted into the member with its tip exposed, and the liquid drawn out from the liquid storage chamber when the valve is opened is
Liquid is supplied to the elastic body from the split or from a liquid-impregnated part provided in the hard member as necessary other than the split, and the hard member has its outer surface connected to the front side of the shaft cylinder. It is arranged so that it fits tightly into the through hole but can slide freely.
When supplying liquid to the pen tip, the tip can be reliably and permanently applied by using the hard member of the nib, and the application after the tip is also done can be done by using a porous body that exposes the tip from the hard member. The coating can be applied with a very good feel, and there is only a gap for air exchange around the pen tip due to the hard material, so that the liquid that is supplied to the pen tip when knocking the tip and during coating. Because it is quickly absorbed by a porous material with excellent liquid-retaining properties, it is possible to prevent the liquid from leaking along the nib surface, and the tip can be applied with a stable liquid outflow. It is possible to provide a pen tip suitable as a knob-type applicator with a valve.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view, Fig. 2 is an external perspective view of the pen nib, Fig. 3 is a sectional view taken along the line A-A in Fig. 1, and Fig. 4 is a longitudinal sectional view of the pen nib showing a modification of the resistance part. 5 is a side view of a pen nib showing a modified example of the split, FIG. 6 is a longitudinal cross-sectional view showing a conventional example, and FIG. 7 is a cross-sectional view taken along the line X--X in FIG. 6. 1... Shaft cylinder, 2... Liquid storage chamber, 7... Valve, 1
0... Resilient member, 12... Pen tip, 13... Hard member, 14... Porous body, 16... Through hole, 17
...Discount.

Claims (1)

[Scope of utility model registration request] By pressing the pen tip 12 that protrudes from the tip of the barrel 1 against the application surface, the valve 7 that interlocks with the pen tip 12 is opened by retreating against the elastic force of the elastic member 10, and the liquid is removed. In an applicator with a tip knob type valve that supplies the liquid in the storage chamber 2 to the pen tip 12, the pen tip 12 has at least one portion.
7 and the hard member 1
and a porous body 14 that is closely inserted into the liquid storage chamber 2 with its tip exposed inside the valve.
The liquid drawn from the elastic body 14 is supplied to the elastic body 14 from the split 17 or from a liquid impregnated part provided in the hard member 13 as necessary other than the split 17, and The pen tip of the applicator with a knob type valve at the tip is characterized in that the hard member 13 is arranged so that its outer surface is in close contact with the through hole 16 in front of the barrel 1 but is slidable.