JP5419729B2 - Multi-core writing instrument - Google Patents

Description

The present invention relates to a multi-core writing instrument in which a plurality of refills including a mechanical pencil refill are accommodated in a shaft cylinder, and a writing tip portion of a selected refill is projected and retracted from a tip opening of the shaft cylinder.

Conventionally, this type of multi-core writing instrument has a plurality of ball pen refills and a single mechanical pencil refill housed in a shaft cylinder, and the rear end of each refill is connected to an actuator that is springed back by a spring. Has been. The operating portion of the actuator protrudes from the outer peripheral surface of the shaft cylinder. When an arbitrary operating portion is slid forward, the writing tip portion of the refill protrudes from the tip opening of the shaft tube and can be written. Further, when the other operation unit is slid forward from this state, the protruding writing tip portion is immersed in the shaft tube. Accordingly, since a single writing instrument can be used as a mechanical pencil and a multicolored ballpoint pen, it becomes an extremely convenient writing instrument, and various types have been proposed and put into practical use.

JP 2003-39888 A

In the mechanical pencil, a core accommodating tube is connected to a chuck for gripping the core, and a plurality of cores are accommodated in the core accommodating tube. When the core gripped by the chuck is consumed and writing becomes impossible, the core in the core accommodating tube is sequentially gripped by the chuck and used for writing. A relatively large number of cores can be accommodated in the core accommodating tube. Therefore, it is not necessary to replenish the lead into the lead receiving tube very frequently.

However, a multi-core writing instrument in which a plurality of refills are accommodated in the shaft cylinder requires that each refill has a small diameter, and the number of cores that can be accommodated is reduced because the core accommodating tube of the mechanical pencil refill has a small diameter. . For this reason, it is necessary to supply the lead to the lead containing tube more frequently than a normal mechanical pencil. When the spare lead case is at hand Replenishment work is not much of a problem, but when you go out, there is no spare lead case at hand, and it is more likely to be unable to refill the lead than a normal mechanical pencil. There is.

Therefore, a first object of the present invention is to provide a multi-core writing instrument capable of performing a core replenishment operation without a spare core case at hand. Recently, electronic devices that input with a touch pen, such as an electronic notebook, have become widespread, but a second object is to provide a multi-core writing instrument that can also be used as a touch pen.

In order to achieve such an object, claim 1 is directed to the operation of an actuator projecting from the outer peripheral surface of the shaft cylinder, the rear ends of the plurality of refills including the mechanical pencil refill accommodated in the shaft cylinder being connected to the actuator. In a multi-core writing instrument that allows writing by projecting the writing tip of any refill by sliding the part forward, it guides each refill that moves back and forth to the guide piece arranged in the shaft cylinder. A holding hole is formed in addition to the guide hole to be held, and a spare core case in which a mechanical pencil spare core is accommodated is held in the holding hole.

Further, the front as well as to be connected to the rear end of the pre備芯case operating element in place of the refill, the lid plug preliminary lead case tip pen-like, pre-lead case the operating unit of the connected operating element And the lid stopper protrudes from the opening at the tip of the shaft tube so that it can be used as a touch pen for electronic equipment.

The spare lead case containing the spare lead is held in the guide hole holding hole and is built into the shaft cylinder. Therefore, when you go out, you can easily attach the lead to the mechanical pencil refill even if you do not have a spare lead case. The core holding tube can be replenished. In addition, since the lid plug at the tip of the spare core case is made into a pen-like shape, if this spare core case is replaced with a refill and connected to the actuator and the lid plug is projected from the tip opening of the shaft tube, it becomes a touch pen for electronic equipment. Can be used.

It is a front view of a multi-core writing instrument. It is a cross-sectional view of the solid施例. It is (A) sectional drawing and (B) bottom view of a guide piece. It is explanatory drawing of a spare core case. It is a cross-sectional view of the solid施例.

In FIG. 1, a shaft cylinder 10 includes a rear shaft 11 and a front shaft 12, and the rear shaft 11 and the front shaft 12 are screwed to be freely attached and detached. A grip 13 made of a soft synthetic resin is attached to the outer surface of the front shaft 12. A plurality of axial window holes 14 are formed at the rear end portion of the rear shaft 11, and the operation portions 61 of the actuator 60 protrude from the window holes 14. In this embodiment, since one mechanical pencil refill and two ball pen refills each containing red and black ink are accommodated, three window holes 14 are formed at intervals of 90 degrees. A knock cover 80 integrally formed with a clip 81 is fitted to the knock member 70 protruding from the tail end opening of the rear shaft 11. When the knock cover 80 is knocked when used as a mechanical pencil, a core is formed. Can be paid out.

A guide piece 50 shown in FIG. 3 is held in the rear shaft 11. The guide piece 50 is formed with three guide holes 51 and one holding hole 52 at equal intervals. A projection 53 having a flat top is formed in the holding hole 52. The ballpoint pen refill 20 and the mechanical pencil refill 30 are respectively inserted into the guide holes 51, and the tail ends of the refills 20 and 30 are detachably connected to the actuator 60. The operating element 60 is springed back by a spring 62, and when an arbitrary operation unit 61 is slid forward against the spring force of the spring 62, a writing tip of a refill connected to the operating element 60 is obtained. Is projected from the distal end opening 16 of the shaft tube 10 so that writing can be performed, and when the other operation unit 61 is slid forward, the projected tip end of the projecting portion is immersed in the shaft tube 10. Is the same.

As shown in FIG. 4, the spare core case 40 has a pipe shape that is the same size as the other refills 20 and 30, and is filled with a plug 42 made of a soft synthetic resin on the tail end side to serve as the bottom. . The lid plug 41 made of a hard synthetic resin is in the shape of a pen with a bullet-shaped tip, and a spare core G is accommodated therein and the lid plug 41 is fitted into the pipe tip. The spare lead case 40 is inserted into the holding hole 52 of the guide piece 50 until the tail end of the spare lead case 40 comes into contact with the tip of the rib 71 of the knock member 70, but the protrusion 53 formed in the holding hole 52 has the spare lead case 40. Held in pressure contact.
When supplying the lead to the mechanical pencil refill 30, the front shaft 12 is separated from the rear shaft 11, and the mechanical pencil refill 30 and the spare lead case 40 are pulled out from the operating hole 60 and the holding hole 52 of the guide piece 50, respectively. The spare core G may be replenished to the core housing tube of the mechanical pencil refill 30 and can be easily replenished even when there is no replacement core case at hand.

Since the spare lead case 40 is the same size as the refills 20 and 30, the spare lead case 40 can be connected to the actuator 60 instead of the ballpoint pen refill 20, for example. At this time, as shown in FIG. 4, the lid plug 41 of the spare core case 40 is at the same level as the writing tip of the refills 20 and 30, so that the operation unit 61 of the actuator 60 to which the spare core case 40 is connected is provided. When sliding and advancing, the pen-shaped lid stopper 41 protrudes from the tip opening 16 of the shaft tube 10 and can be used as a touch pen for electronic equipment, thereby providing a versatile multi-core writing instrument.

10 shaft cylinder 11 rear shaft 12 front shaft 13 grip 14 window hole 20 ball pen refill 30 mechanical pencil refill.
40 Spare core case 41 Cover plug 50 Guide piece 51 Guide hole 52 Holding hole 60 Actuator 61 Operation part 62 Spring 70 Knock member 80 Knock cover 81 Clip

Claims (1)

The back end of a plurality of refills including mechanical pencil refills contained in the shaft cylinder is connected to the actuator, and an arbitrary refill can be written by sliding the operation part of the actuator protruding from the outer peripheral surface of the shaft forward. In the multi-core writing instrument that allows writing with the tip protruding from the tip opening of the barrel,
A holding hole is formed in addition to the guide hole for guiding each refill moving back and forth to the guide piece disposed in the shaft cylinder, and a preliminary core case in which a preliminary core for a mechanical pencil is accommodated is held in the holding hole ,
The rear end of the spare core case can be connected to the actuator in place of the refill, and the lid plug at the front end of the spare core case has a pen-like shape. A multi-core writing instrument, characterized in that it can be used as a touch pen .

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