JP2967229B2 - Nib cleaning device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nib cleaning apparatus for cleaning an elongated cylindrical nib such as a Lot Ring (registered trademark) nib.

(Prior Art) In general, in a writing instrument such as a lot ring (registered trademark) having an elongated cylindrical nib, the ink that is in contact with the inner peripheral surface of the nib is solidified to thereby solidify the inner peripheral surface of the nib. Since a solidified ink layer is formed in the pen tip, the ink flow path in the pen tip becomes thinner with the passage of time, and the ink flow path in the pen tip may be blocked.

Therefore, it is necessary to periodically clean the inside of the pen tip of the writing implement to remove the solidified ink film. As a method of cleaning the pen tip of the writing instrument, ink is removed from the inside of the writing instrument, the pen tip is taken out of the writing instrument, water is injected into the pen tip, and water in the pen tip is removed. In some cases, the removed pen tip is attached to the writing implement.

(Problems to be Solved by the Invention) However, since the inner diameter of the pen tip is very small, the flow rate of the pressurized water flowing into the pen tip becomes small, so that the solid ink layer formed in the pen tip is formed. It takes a long time to remove the pen and the water accumulated in the pen tip is difficult to evaporate, so that it takes time to dry the inside of the pen tip.
As a result, much time is required for the cleaning operation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pen tip cleaning device capable of cleaning an elongated cylindrical pen tip such as a Lotling (registered trademark) pen tip in a short time.

(Means for Solving the Problems) The present invention relates to a pen tip cleaning apparatus for cleaning an elongated cylindrical pen tip such as a Lot Ring (registered trademark) pen tip, which is provided with a frame, and attached to the frame. A vibrator having a plate-shaped piezoelectric ceramic having electrodes formed on both end surfaces perpendicular to the polarization axis, a fixed portion fixed to one end surface of the piezoelectric ceramic, and integrally connected to the fixed portion; and A diaphragm having a vibrating portion protruding outward from one end face of the piezoelectric ceramic.

The resonance frequency of the vibrating portion of the vibrating plate is substantially equal to the resonant frequency of the vibrator, and the length of the vibrating portion along the projecting direction is an odd multiple of a quarter wavelength of the vibration generated in the vibrating plate. Preferably, it is approximately equal to the length dimension.

It is preferable that a length dimension along a direction orthogonal to the protruding direction of the vibrating portion gradually decreases in the protruding direction.

(Operation) When cleaning a cylindrical pen tip provided on a writing instrument such as a Lotling (registered trademark), the pen tip comes into contact with a tip of a vibrating portion of the diaphragm, and the vibrator has a resonance frequency equal to the resonance frequency. An AC signal of a frequency is applied. The piezoelectric ceramic is excited, and the diaphragm receives the vibration of the piezoelectric ceramic. Since the fixed portion of the diaphragm is fixed to the piezoelectric ceramic, the vibrating portion of the diaphragm is vibrated,
Vibration is transmitted to the pen tip, and after several tens of seconds, the ink layer is separated from the inner peripheral surface of the pen tip by the vibration and pushed out to the outside after a few tens of seconds. As a result, clogging of the ink flow path in the pen tip can be eliminated in a short time.

The length of the vibrating plate along the direction in which the vibrating portion protrudes is substantially equal to the length of the vibrating plate generated on the vibrating plate that makes the quarter wavelength an odd-number multiple. Since the tip of the vibration wave coincides with the antinode of the vibration wave, the largest vibration is generated at the tip of the vibrating portion of the vibration plate, and the vibration is given to the pen tip. As a result, the solid ink layer in the pen tip can be efficiently removed.

Since the length dimension along the direction orthogonal to the protruding direction of the vibrating part gradually decreases in the protruding direction, the energy of the vibration generated in the vibrating part is concentrated on the tip of the vibrating part. Earlier, greater vibration is applied, which facilitates the release of the solid ink layer within the pen tip.

(Embodiment) FIG. 1 is a perspective view showing a pen tip cleaning apparatus of the present invention, and FIG.
FIG. 3 is a diagram showing a use state of the pen tip cleaning device of FIG. 1, FIG.
FIG. 4 is a plan view showing a vibrator and a diaphragm used in the pen tip cleaning device of FIG. 1, and FIG. 4 is a side view showing the vibrator and the diaphragm of FIG.

The nib cleaning device 10 includes a frame 12, as shown in FIG. A rectangular bottom plate 14, four side plates 16 each rising vertically from the corresponding edge of the bottom plate 14 and being connected thereto, and covering an opening defined by each side plate 16;
It has a cover plate 18 which cooperates with the bottom plate 14 and each side plate 16 to define an internal accommodation space. One of the side plates 16 is provided with an elongated hole 20 penetrating in the thickness direction. The long hole 20 is located substantially at the center of the side plate 16 and extends parallel to the bottom plate 14.

A vibrator 22 is mounted in the frame 12. Vibrator
22 has a piezoelectric ceramic 24 as shown in FIG. 3 and FIG. In the present embodiment, the piezoelectric ceramic 24 is formed of a rectangular plate, its length is 30 mm, its width is 25 mm, and its thickness is 5 m.
m. Both surfaces of the piezoelectric ceramic 24 are perpendicular to the thickness direction, and the polarization axis direction coincides with the thickness direction. Piezoelectric ceramic 24
Is made of TDK91A (product name).

An electrode 26 is formed on one surface of the piezoelectric ceramic 24, and an electrode 28 is formed on the other surface. Each electrode 26, 28 extends over the entire surface of the corresponding piezoelectric ceramic 24. The material of each of the electrodes 26 and 28 is gold. A terminal P made of copper foil is attached to the electrode 26, and a terminal Q made of copper foil is attached to the electrode 28 in the same manner. The other surface of the piezoelectric ceramic 24 is fixed to the bottom surface 14 of the frame 12. The resonance frequency of the piezoelectric vibrator 22 is about 57 KHz. In this embodiment, a plate-shaped piezoelectric ceramic is used, but a columnar piezoelectric ceramic can be used instead.

The diaphragm 30 is attached to one surface of the piezoelectric ceramic 24. The material of the diaphragm 30 is made of phosphor bronze. In the present embodiment, the diaphragm 30 includes a rectangular fixing portion 32 and an isosceles triangular vibrating portion 34 whose one edge is integrally connected to one edge along the longitudinal direction of the fixing portion 32. Consists of Fixed part 32
Has a length of 25 mm, a width of 10 mm, and a thickness of 0.1 mm. The length of one edge connected to the fixing portion 32 of the vibrating portion 34 is 10 mm, and the length from the one edge to the opposing top is 17.5 mm;
Its thickness is 0.1 mm. An adhesive 36 is attached to the electrode 26 on one surface of the piezoelectric ceramic 24 such that the longitudinal direction thereof is in the width direction of the piezoelectric ceramic 24 and one surface thereof is opposed to one surface of the piezoelectric ceramic 24. It is glued. Adhesive 36
Is an epoxy resin adhesive. Vibrating part 34 is piezoelectric ceramic
24 protrudes outward in the longitudinal direction from one surface thereof, and protrudes to the outside of the frame 12 through the elongated hole 20.

As shown in FIG. 2, the terminal P of the vibrator 22
Cable 40 to the driving means 38 for generating an AC signal to be applied to the
Terminal Q is connected to the driving means 38 by a cable 42.
Connected by

Rotting (registered trademark) 44 slender cylindrical nib 46
It is preferable to attach the tip of the pen tip 46 to the cleaning liquid in the cleaning tank 48 in order to enhance the cleaning effect as shown in FIG. The cleaning liquid is alcohol. Next, the pen tip cleaning device 10 is driven. The AC signal generated by the driving means is applied to the vibrator 22 via cables 40 and 42,
2 is excited. The frequency of the applied AC signal is equal to the resonance frequency of the vibrator 22, and its value is about 57 KHz.

When the vibrator 22 is excited, the diaphragm 30 is vibrated by a cantilever having the fixed portion 32 as a fixed end. The vibration of the vibration part 34 is a bending vibration having a wavelength λ. 1 of the vibrating part 34
Since the length dimension from one edge to the top opposite to the edge and the wavelength λ satisfy the following expression (1), the top of the tip of the vibrating section 34 corresponds to the antinode of vibration. The largest vibration displacement occurs at the top of the tip.

Here, n is an odd number.

Next, the tip of the pen tip 46 of the lot ring (registered trademark) 44 is brought into contact with the top end of the vibrating section 34. The pen tip 46 receives the vibration of the vibrating section 34 and is vibrated. The solid ink layer formed on the inner peripheral surface of the pen tip 46 is separated from the inner peripheral surface by the vibration, and is pushed out of the pen tip 46 into the cleaning tank 48. Also, alcohol penetrates into the pen tip 46,
The alcohol assists the peeling of the solid ink layer.

About 15 seconds after applying vibration to the pen tip 46, the solid ink layer is removed outside the pen tip 46, so that clogging of the ink flow path of the pen tip 46 can be easily and quickly eliminated. it can.

(Effects of the Invention) According to the present invention, since the removal of the solid ink layer formed in the pen tip can be promoted by bringing the pen tip into contact with the diaphragm, clogging of the ink flow path can be prevented. It can be easily and quickly resolved.

Further, the length dimension of the vibrating plate along the protruding direction of the vibrating portion is almost equal to the length dimension that makes a quarter wavelength of the vibrating wave generated in the vibrating plate an odd number times, so that the vibrating plate has Since the tip of the vibrating part coincides with the antinode of the vibration wave, the largest vibration occurs at the tip of the vibrating part of the vibrating plate, and the vibration is given to the pen tip. As a result, the solid ink layer in the pen tip can be efficiently removed.

Furthermore, since the length dimension along the direction orthogonal to the protruding direction of the vibrating part gradually decreases in the protruding direction, the energy of the vibration generated in the vibrating part is concentrated on the tip of the vibrating part. The pen tip is subjected to greater vibration, which promotes peeling of the solid ink layer in the pen tip.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the pen tip cleaning apparatus of the present invention, FIG. 2 is a view showing a use state of the pen tip cleaning apparatus of FIG. 1, and FIG. 3 is a pen tip cleaning apparatus of FIG. FIG. 4 is a plan view of the vibrator and the diaphragm used in the apparatus, and FIG. 4 is a side view of the vibrator and the diaphragm of FIG. 10 pen cleaning device, 12 frame, 22 vibrator, 24
... piezoelectric ceramics, 26, 28 ... electrodes, 30 ... diaphragm, 32 ... fixed part, 34 ... vibrating part, 46 ... pen tip.

Claims (3)

(57) [Claims] 1. A nib cleaning apparatus for cleaning an elongated cylindrical nib such as a Lot Ring (registered trademark) nib, comprising: a frame; and both end faces attached to the frame and perpendicular to a polarization axis. A vibrator having a plate-shaped piezoelectric ceramic having electrodes formed thereon, a fixed portion fixed to one end face of the piezoelectric ceramic, and one end face of the piezoelectric ceramic integrally connected to the fixed portion and connected to the fixed portion. A vibrating plate having a vibrating portion protruding outward; 2. The vibration frequency of the vibrating portion of the vibrating plate is substantially equal to the resonant frequency of the vibrator, and the length of the vibrating portion along the projecting direction is one quarter of the vibration generated in the vibrating plate. 2. The nib cleaning apparatus according to claim 1, wherein the length is substantially equal to a length dimension obtained by multiplying the wavelength by an odd number. 3. The nib cleaning apparatus according to claim 2, wherein a length dimension of the vibrating portion along a direction orthogonal to the protruding direction becomes gradually smaller in the protruding direction.