JPH0617579Y2 - Writing instrument or applicator having a valve device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a writing instrument or an applicator having a valve device for adjusting the supply amount of ink or coating liquid.

(Problems to be solved by the conventional technology and device) Conventionally, the ink tank or the coating liquid tank and the valve device are composed of separate parts, so that the number of parts is large, the assembly is complicated, and the manufacturing process is complicated. There was a problem that it was complicated and costly.

The present invention is intended to solve such problems.

(Means for Solving Problems) In order to solve the above problems, a writing instrument or an applicator having a valve device of the present invention is provided with an ink or coating liquid tank 7
On the other hand, a cylindrical spring bearing, which is a component of the valve device, is integrally formed with a part of the peripheral wall thereof having a slit for conducting ink or coating liquid from the tank 7 to the inside of the valve. .

(Operation) In the present invention, since the spring bearing, which is one of the components of the valve device, is integrally molded with the tank, the number of parts of the valve device is reduced and it is necessary to assemble the valve device to the tank after completion. Since the valve device is completed by directly assembling the valve seat and the valve stem into the tank, the number of steps is reduced and the manufacturing process is simplified as a whole.

(Embodiment) FIG. 1 shows a vertical cross section of an applicator according to a first embodiment of the present invention. In the applicator, a front shaft 2 is screwed to a front end of an outer shaft 1 and a joint portion thereof is formed. A front end flange portion of the coating liquid introducing pipe 3 and a stopper 4 abutting on the front surface thereof are sandwiched and fixed, and a front shaft inner hole portion of the front surface of the stopper 4 has an outer surface serving as an air displacement passage. A brush core 6 having a holder 5 provided with 5a on its outer surface is fitted, and a cartridge type coating solution tank 7 equipped with a valve device is provided in the inner hole of the outer shaft 1 so that the coating solution can be knocked. It is configured to be connected to the introduction pipe 3. The coating liquid tank 7 is constructed as follows. That is, a plastic inner shaft 9 integrally formed with the spring bearing 8 is formed at the front part of the inner hole, and a tail plug 10 is fitted to the rear end opening of the inner shaft 9 to form a coating liquid filling part 11 at the rear part of the inner hole. At the same time, the valve rod 12 is inserted into the inner hole of the spring bearing 8 while being pressed forward by the spring 13, and the valve rod 12 abuts on the front inner hole of the spring bearing 8 of the inner shaft 9. The valve seat 14 and the packing 15 which are closed are inserted, and the fixed tube 16 is screwed to the front end opening of the inner shaft to form the coating liquid tank 7. The coating liquid tank 7 is connected by fitting the coating liquid introducing pipe 3 into the fixed pipe 16, packing 15, and inner hole portion of the valve seat 14, and is attached to the front shaft 2 when not in use. Cap 17 with tail plug 10
The valve seat 14 moves forward relative to the valve rod 12 which is axially moved by being fitted into the rear end face recess 10a and knocked to collide with the coating liquid introducing pipe 3 to stop, and the coating is performed. It is for circulating the liquid.

Next, FIG. 2 is a longitudinal sectional view of the writing instrument according to the embodiment of FIG. 2 of the present invention. The writing instrument has a spring bearing 8'at the front portion of the inner hole.
A tail plug 10 'is press-fitted and fixed to a rear end opening of a shaft cylinder 18 integrally formed with the ink cylinder portion 19 to form a rear portion of the inner hole and a valve rod 12' in the inner hole portion of a spring receiver 8 '.
The valve seat 14 'and the sponge 20 are inserted in the inner hole portion of the shaft cylinder 18 in front of the spring bearing 8', and the front end port of the shaft cylinder 18 is fitted with the front shaft. 2'is screwed and the pen core 21 is inserted in the center hole of the tip shaft 2'and the sponge 20.
Is inserted and connected to the valve rod 12 ', and the pen core 21 is knocked to open the valve seat 14'.

FIG. 3 is a vertical cross section of a writing instrument according to a third embodiment of the present invention. In the writing instrument, a spring receiver 8 ″ is formed integrally with the inner hole portion continuously from the front end opening edge of the ink tank shaft 22. The valve seat 14 ″ is configured to be press-fitted and fixed in the inner hole portion of the spring receiver 8 ″, and the sponge 20 ′ is fixed in the front shaft 2 ″ and the front shaft 2 ″ is screwed to the ink tank shaft 22. It is abutted against the valve seat 14 ″ by being pressed. Valve stem 1
The structural functions of the 2 ", the spring 13" and the pen core 21 'are similar to those of the second embodiment.

(Effects of the Invention) The present invention has the above-described configuration and operation,
Since the spring bearing, which is one element of the valve device, is integrally formed with the ink tank shaft or the coating liquid tank shaft, there is an effect that the manufacturing and assembling of parts are facilitated and the process is simplified as a whole. In particular, the above effect is remarkable when the spring bearing has a cylindrical shape and a complicated shape having a slit in a part of its peripheral wall.

[Brief description of drawings]

1 is a vertical sectional view of an applicator according to a first embodiment of the present invention, FIG. 2 is a vertical sectional view of a writing implement according to a second embodiment of the present invention, and FIG. 3 is a vertical sectional view of a writing implement according to a third embodiment of the present invention. , Fig. 4 is Fig. 1 A-A
It is a line sectional view. 1 ... Outer shaft, 2, 2 ', 2 "... Leader shaft, 3 ... Coating liquid introduction pipe, 4 ... Stopper, 5 ... Holder, 5a ... Groove, 6 ...
... Brush, 7 ... Coating liquid tank, 8, 8 ', 8 "... Spring receiver, 9 ... Inner shaft, 10, 10' ... Tail plug, 10a ...
Recessed portion, 11 ... Coating liquid filling portion, 12, 12 ', 12 "...
... valve rod, 13, 13 ', 13 "... spring, 14,
14 ', 14 "... valve seat, 15 ... packing, 16 ...
Fixed tube, 17 ... Cap, 18 ... Shaft cylinder, 19 ... Ink tank part, 20, 20 '... Sponge, 21, 2
1 '... Pen core, 22 ... Ink tank shaft.

Claims (1)

[Scope of utility model registration request] 1. A shape having a cylindrical shape, which is a component of a valve device, for a tank 7 of ink or coating liquid, and having a slit for conducting ink or coating liquid from the tank 7 to the inside of the valve in a part of its peripheral wall. Writing implement or applicator having a valve device formed by integrally molding the spring receiver.