JP2009012194A - Writing instrument with built-in double head refill - Google Patents

Abstract

Two types of pen tip functions are exhibited by separating a cursive refill from a shaft tube and replacing the other pen tip portion arranged behind the cursive refill with the tip of the shaft tube.
A writing instrument is configured such that a pen tip part can be projected and retracted by a rotation feeding mechanism, and a writing body refill provided with pen tip parts (a pen tip or an input stylus pen) at both ends in a shaft cylinder is detachably attached. The pen tip portions at both ends of the cursive refill are provided with locking portions that respectively lock the two pen tip portions.
[Selection] Figure 1

Description

  The present invention relates to a writing instrument (or an input pen) having a cursive refill that is detachably attached to a shaft cylinder, and forms pen nibs at both ends of the cursive refill, and the two pen nibs. The cursive refill is separated from the shaft tube, and the other pen tip portion disposed behind the cursive refill is provided at the tip of the shaft tube. By replacing, two types of pen tip functions are exhibited.

As an example, there is known a composite writing instrument in which a plurality of writing body refills are arranged in parallel to a shaft cylinder to exhibit two or more types of pen tip functions.
JP 2001-328393 A JP-A-11-188992

However, in the case of the composite writing instrument described above, the mechanism for selecting a desired cursive refill from a plurality of cursive refills becomes complicated, and the mechanism has a shaft in comparison with a writing instrument incorporating only one cursive refill. The drawback was that the outer diameter of the tube had to be increased.
In addition, the writing instrument is equipped with an electrical switch (or sensor) that detects the writing pressure of the cursive refill and turns it on / off, and it can detect the XY coordinates by incorporating a device that receives sound waves and light transmitted from the transmitter. When used in a system that stores and outputs handwriting in combination with a device (reception device), or a writing instrument with a built-in transmitter that emits light or vibrates in conjunction with writing, and an XY coordinate detection device that uses a digitizer In combination, in a writing instrument (or input pen) system equipped with a writing pressure detection mechanism, it is difficult to form a space containing a plurality of cursive refills because many electronic circuits are built in the shaft cylinder. In addition, in many cases, a device (transmitting device) that sends a signal to the receiving device is attached near the pen tip, and the shaft can be used without interfering with a plurality of cursive refills. It would be extremely difficult to place in.

According to the present invention, a writing instrument (or an input pen) having a cursive refill that is detachably attached to a shaft cylinder is formed with pen nibs at both ends of the cursive refill, and the two nibs are locked. There are two types by separating the cursive refill from the shaft tube and replacing the other pen tip portion arranged at the back of the cursive refill with the tip of the shaft tube. The pen tip function is surely and concisely demonstrated without using a complicated mechanism.
Moreover, when this invention is applied to an electronic pen, when using a stylus pen, a cursive refill can be easily inserted and removed from a shaft cylinder.

  The present invention relates to a writing instrument (or an input pen) having a cursive refill that is detachably attached to a shaft cylinder, and forms pen nibs at both ends of the cursive refill, and the two pen nibs. The cursive refill is separated from the shaft tube, and the other pen tip portion disposed behind the cursive refill is provided at the tip of the shaft tube. The gist is to exhibit two types of pen tip functions by replacing them.

1 to 4 show an example of the present invention.
This embodiment is a rotary pay-out type writing instrument, and has a mechanism in which the writing body refill 12 appears and disappears at the tip of the shaft cylinder 1 by the relative rotation of the rear shaft 3 and the front shaft 2.
The configuration and operation of the cam cylinder 6, the rotor 7, and the slider 8 are substantially the same as those in the prior art. A rotor 7 is inserted and fitted into the cam cylinder 6 so as to be rotatable but not movable back and forth. Further, a slider 8 is inserted into the cam cylinder 6, and the slider 8 is also slidably inserted into the rotor 7. Further, an elastic member 11 made of a coil spring or the like is disposed in front of the cam cylinder 6. The front end portion of the elastic member 11 is in contact with and locked to a spring receiving portion 10 a of a spring receiving 10 fixed to the front portion of the cam cylinder 6. On the other hand, the rear end portion of the elastic member 11 is in contact with and locked to a spring receiving portion 9 c formed at the rear of the refill receiver 9 via a cylindrical portion of the refill receiver 9. That is, the refill receiver 9 is urged rearward by the elastic member 11, and the slider 8 is also urged rearward through the refill receiver 9.

With the above configuration, the cam cylinder 6 and the rotor 7, the slider 8, the refill receiver 9, the elastic member 11, and the spring receiver 10 constitute a single member to constitute a rotation feeding unit.
An inner rib 9b is formed on the inner surface of the rear portion of the refill receiver 9, and a cursive refill 12 is press-fitted and fixed to the inner rib 9b.
Further, a screw portion 6 b is formed on the front outer surface of the cam cylinder 6 of the rotary feeding unit, and is screwed into the screw portion 2 a of the front shaft 2. In other words, the rotation feeding unit and the front shaft 2 are integrated by this screwing. The crown 4 stop is fixed to the rear part of the rotor 7, but is fixed by press-fitting the press-fitting portion 7 b of the rotor 7 into the knurled portion 5 b formed in the crown cap 5. A screw portion 5 a is formed at the rear end portion of the head crown stopper 5, and the screw portion 5 a is screwed and bonded and fixed to the screw portion 4 a of the head crown 4.
A decorative ring 13 is press-fitted and bonded to the rear portion of the rear shaft 3.

The cursive refill 12 has a ballpoint pen tip 12a inserted into and fixed to one end of a cylinder 12c that stores ink, and a stylus pen tip 12b that does not require ink ejection inserted into and fixed to the other end.
An air circulation groove 12f is formed on the stylus nib 12b side so that the air pressure in the cylinder 12c is the same as the environment.
The ballpoint pen tip portion 12a and the stylus pen tip portion 12b are provided with locking portions 12d and 12e, respectively, and are in contact with the locking portion 9a provided in the refill receiver 9.
When the pen tip of the cursive refill 12 is replaced, first, the front shaft 2 and the front shaft 2 are unscrewed so that the front of the cursive refill 12 is exposed in front of the rear shaft 3. In this state, the cursive refill 12 is removed from the refill receptacle 9, the pen tip portion is inverted, the back of the cursive refill 12 is again inserted into the refill receptacle 9, and the rear shaft 3 is screwed. Replacement of the nib is completed.

5 to 10 show a second example of the present invention.
In this embodiment, the writing instrument is equipped with an electrical switch (or sensor) that detects the writing pressure of the cursive refill and turns it on / off, and transmits sound waves and light transmitted from a transmitter attached near the pen tip. It is a writing instrument used in a system that stores and outputs handwriting in combination with a receiving device.

  An inner shaft 16 in which a cursive refill 12 is slidably disposed is provided on the inner side of the barrel 1 including the transmitter cover 14, the front shaft 2, the rear shaft 3 and the tail plug 15. The middle shaft 16 is formed with a space for incorporating a sensor box 17 in which an electric device for detecting the writing pressure of the cursive refill 12 to turn on / off the power is modularized. The sensor box 17 includes a guide portion 17a that slidably guides the rear portion of the cursive folder 18 provided at the rear end of the cursive body, and a contact portion that determines a sliding stroke when the electric device senses the pen pressure. 17 b is formed, and a resilient portion 17 c that biases the cursive refill 12 forward in the longitudinal axis when not writing is provided.

A guide portion 18a and a locking portion 18b are formed behind the cursive folder 18 to prevent the cursive folder 18 from falling off the sensor box 17.
Further, the writing body folder 18 slides backward by writing pressure, and can press the pressure sensor 19 via the elastic portion 17c to detect the writing state.
At this time, excessive writing pressure can be prevented from being applied to the pressure-sensitive sensor 19 by the cursive folder contact portion 18c being in contact with the sensor box contact portion 17b.
The cursive folder 18 is provided with a locking portion 18 d that locks the pen tip portion located behind the cursive refill 12.

In the present embodiment, a plurality of ribs having the pen tip taper portions 12g and 12h as the locking portions 12d and 12e are provided as locking portions 18d for locking the pen tip portion.
The cursive refill 12 is tightly attached by a refill clip 20 attached to the cursive folder 18 to prevent the curling refill 12 from falling off the barrel 1.
A slide 21 is provided on the shaft cylinder as a sliding piece, is slidably disposed on the outer peripheral surface of the shaft cylinder 1, and an expanded portion 21 a is formed in front of the refill clip 20.
When the cursive refill 12 is extracted and the pen tip is replaced, the slide widening portion 21 a expands the refill clip 20 attached to the cursive folder 18 by moving the slide 21 backward in the longitudinal direction. The curled refill 12 is released from the tightness, and the cursive refill 12 is separated from the writing instrument by its own weight, and the pen tip portion is reversed and attached again.

As the nib used for the curly refill, a stylus nib or the like that does not require transfer to a paper surface such as a metal ballpoint pen tip or ink is preferable as the nib, but the type of nib is particularly limited. It is not a thing.
Although not shown, when the tapered portion of the pen tip portion is used as a locking portion, for example, when a ballpoint pen tip is used on one side and a stylus pen tip is used on the other side, a tapered portion having substantially the same shape is provided on the ballpoint pen and the stylus. By lengthening the tip length with a stylus, it is also possible to lengthen the protruding length of the pen tip from the shaft cylinder with the stylus.
Further, the two pen tip locking portions may be provided with a locking member for locking the pen tip portion at another location in accordance with the shape of each pen tip.
A black ballpoint pen tip may be arranged on one side and a red ballpoint pen tip may be placed on the other side. In this case, the ink ratio in the refill cylinder can be appropriately distributed according to the use frequency.
In this embodiment, the pressure sensor is shown as an electrical device that detects the writing pressure of the cursive body and turns it on / off, but a tact switch or the like may be used in one direction.

It is a partial half sectional view which shows the non-writing state of the 1st example of this invention. It is a cursive refill partial half sectional view of the 1st example of the present invention. It is a principal part expanded partial half sectional view of the 1st example of this invention. It is a principal part disassembled perspective view regarding the rotation delivery mechanism of the 1st example of this invention. It is a partial half sectional view which shows the non-writing state of the 2nd example of this invention. It is a cursive refill partial half sectional view of the 2nd example of the present invention. It is a principal part expanded partial half sectional view of the 2nd example of this invention. It is principal part AA sectional drawing which shows the cursive refill mounting | wearing of the 2nd example of this invention. It is principal part AA sectional drawing which shows the cursive refill mounting | wearing release of the 2nd example of this invention. It is a principal part disassembled perspective view of the 2nd example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 Front shaft 2a Screw part 3 Rear shaft 4 Head crown 4a Screw part 5 Head crown stopper 5a Screw part 5b Knurl part 6 Cam cylinder 6a Cam groove 6b Screw part 7 Rotor 7a Cam surface 7b Press-fit part 8 Slider 8a Slider projection 9 Refill receiver 9a Locking portion 9b Inner rib 9c Spring receiving portion 10 Spring receiver 10a Spring receiving portion 11 Elastic member 12 Curtain refill 12a Ballpoint pen tip 12b Stylus pen tip 12c Cylindrical body 12d Locking portion 12e Locking part 12f Air circulation groove 12g Pen tip taper part 12h Pen tip taper part 13 Decoration ring 14 Transmitter cover 15 Tail plug 16 Center shaft 17 Sensor box 17a Guide part 17b Abutting part 17c Bounce part 18 Curtain folder 18a Guide Part 18b Locking part 18c Abutting part 18d Locking part 19 Pressure sensor 20 Refill clip 21 Ride 21a expanding portion 22 battery 23 ultrasonic wave emitting element 24 infrared transmitter element

Claims (4)

In a writing instrument having a cursive refill that is detachably attached to the shaft cylinder, a pen tip portion is formed at both ends of the cursive refill, and a locking portion for locking the two pen tip portions is provided. Writing instrument with built-in double head refill. 2. The writing instrument with a built-in double-head refill according to claim 1, wherein the writing instrument is a writing instrument equipped with an electrical device for detecting on-off of the writing pressure of the cursive refill. The writing instrument incorporating a double-headed refill according to claim 1 or 2, wherein at least one of the two nib portions of the cursive refill is a stylus nib that does not leave a handwriting. 4. A writing instrument incorporating the double-headed refill according to claim 1 or 3, wherein a part of the storage frame that can release the grip of the refill holder is exposed on the outer surface of the shaft cylinder.