JPS6246464Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention includes a piston that is slidably provided in the application material storage chamber in the barrel, and the piston is moved forward to apply the cosmetic liquid.
The present invention relates to an applicator that supplies a coating material such as ink to a pen tip.

Conventionally, as this type of applicator, the Utility Model 50-10925
As disclosed in the above publication, by rotating a rear shaft that is rotatable with the front shaft, a threaded rod that rotates and slides at the same time as the rear shaft is advanced along the screw hole of the front shaft. It is known that a piston at the tip of the screw rod supplies the coating material in the front shaft to the nib at the tip of the front shaft. However, while this applicator has the advantage of being able to reliably supply the coating material in the front shaft to the pen tip with the moving piston, it is necessary to move the rear shaft to the front shaft in order to supply the coating material to the pen tip during use. However, since it has to be rotated, it is troublesome to hold the barrel differently or operate it with both hands, and it is also difficult to adjust the amount of coating material supplied to the nib by rotating the rear barrel. It was inconvenient.

This idea was created in view of the problems mentioned above.
The appropriate amount of coating material in the coating material storage chamber can be supplied to the pen tip with an extremely simple operation of simply holding the operating knob that appears from the side of the barrel and rotating it at a predetermined angle in the circumferential direction with respect to the axis with your fingertips. The purpose of the present invention is to provide an applicator with a

The present invention will be described in detail below based on embodiments shown in the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1 is a front shaft, and a pen tip 2 having a capillary action made of synthetic fiber bundle, natural fiber bundle, urethane, sponge, etc. is attached to the tip of the front shaft 1. A fixed tube 3 is fixed by press-fitting, gluing, or the like. The inside of the front shaft 1 is a storage chamber 4 for coating materials such as cosmetic liquid and ink, and a piston 6 that presses an O-ring 5 fitted on the outer edge of the chamber 4 against the inner wall is slidable therein. It is located in Reference numeral 7 denotes a rear shaft having a support hole 8 formed in the front portion through which a screw rod 9, which will be described later, is inserted;
is connected and fixed to the rear end of the front shaft 1. Reference numeral 9 denotes a screw rod whose front end is connected to the piston 6. The screw rod 9 has a spiral groove 9a formed on its outer surface, and a tail plug fixed to the support hole 8 and the rear part of the rear shaft 7. The guide hole 11 provided at the center of the guide hole 10 restricts the direction of movement of the guide hole 10 and is slidably disposed. 12 is the spiral groove 9a of the screw rod 9
The ratchet wheel 12 has a spiral groove 12a of the same pitch and is engaged with the screw rod 9, and the ratchet wheel 12 has a plurality of pawls 13 (12 in the figure) on its outer surface. Ratchet wheel 12
1 is shown in which the spring 14 tensioned between the front part of the rear shaft 7 and the front part of the rear shaft 7 is used to bias the shaft backward and come into contact with the opening of the guide hole 11 to be in a steady position. Alternatively, the position of the ratchet wheel 12 may be determined by interposing a cylindrical member at the spring 14 position. Reference numeral 15 denotes an operating knob that is partially exposed from the side surface of the rear shaft 7 and is arranged to be rotatable in the circumferential direction with respect to the axis at a predetermined angle,
Legs 15a protruding inward of the rear shaft 7 of the operating knob 15
A pin 16 is installed on the pin 16, and an oscillator 17, whose part engages with the pawl 13 of the ratchet wheel 12, is pivoted so as to be able to oscillate in only one direction (direction of arrow X). There is.

Reference numeral 18 denotes a telescopic leaf spring having a curved portion 18a at its center, and the leaf spring 18 is connected to the operating knob 1.
The operation knob 15 disposed between the leg 15a of the rear shaft 7 and the locking portion 7a of the rear shaft 7 is biased in the direction of the arrow Y.

Next, the action will be explained.

If the operating knob 15 is rotated circumferentially about the axis at a predetermined angle in the direction of the arrow X against the elastic force of the leaf spring 18 from the state shown in FIG. Child 17 does not swing in the Y direction, so claw 1
3, the ratchet wheel 12 is rotated by the same angle in the X direction. Since the ratchet wheel 12 and the screw rod 9 are engaged by a spiral, the rotation of the ratchet wheel 12 moves the screw rod 9 forward by an amount proportional to the rotation of the ratchet wheel 12, and the piston 6 connected to the screw rod 9 moves forward. Application material storage chamber 4
The coating material inside is supplied to the pen tip 2.

The oscillator 17 that engages with the claw 13 of the ratchet wheel 12 can swing in the direction of the arrow X, and when the operation knob 15 returns in the Y direction, the engaging portion tilts and disengages from the claw 13. Therefore, if the fingers are removed from the operation knob 15 in the state shown in FIG. 3, the operation knob can be returned to the state shown in FIG. 2 without any hindrance by the repulsive force of the leaf spring 18. When the operation knob 15 returns, some load is applied to the ratchet wheel 12.
In the illustrated example, the end of the leaf spring 18 is engaged with the engagement portion 7.
Since the ratchet wheel 12 projects inward from a and engages with the ratchet wheel 13, even if a load is applied to the ratchet wheel 12, it is possible to prevent the ratchet wheel 12 from rotating in reverse.

As described above, in the present invention, a piston is slidably provided in the coating material storage chamber in the barrel that communicates with the pen tip at the tip of the barrel, and a ratchet wheel having a plurality of pawls is mounted on a screw rod connected to the piston. A part of the operation knob is exposed from the side of the shaft cylinder, and a part of it is exposed from the side of the shaft cylinder, and a part of the operation knob is pivoted to the oscillator that can swing in one direction and engages with the pawl in the circumferential direction with respect to the axis at a predetermined angle. Since the operating knob is arranged so that it can be rotated, it is extremely easy to operate by simply holding the operating knob exposed from the side of the barrel and rotating it in the circumferential direction around the axis at a predetermined angle with your fingertips. The piston, which moves forward in proportion to the rotation angle of the pen, can reliably supply an appropriate amount of the coating material in the coating material storage chamber to the pen tip.

In the illustrated example, the leaf spring 18 is used as a means for returning the operation knob 15, but
If the operation knob 15 is returned with a fingertip, the leaf spring 18 is not necessarily necessary.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line A--A in FIG. 1, and FIG. 3 is an explanatory diagram of the operation. 1... Front shaft, 2... Pen tip, 4... Application material storage chamber, 6... Piston, 7... Rear shaft, 9... Screw rod, 9a... Spiral groove, 12... Ratchet wheel, 12a ……
Spiral groove, 13...claw, 15...operation knob, 17...
...oscillator.

Claims (1)

[Scope of utility model registration request] A piston is slidably provided in a coating material storage chamber in the barrel that communicates with the pen tip at the tip of the barrel, and a ratchet wheel having a plurality of claws is spirally engaged with a screw rod connected to the piston, An operation knob to which an oscillator that can swing in one direction and engages with the pawl is pivotally mounted is partially exposed from the side surface of the shaft cylinder and arranged so as to be rotatable in the circumferential direction with respect to the axis at a predetermined angle. An applicator.