CN2266515Y

CN2266515Y - Left-hand ball pen

Info

Publication number: CN2266515Y
Application number: CN 96206456
Authority: CN
Inventors: 刘子伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-16
Filing date: 1996-03-16
Publication date: 1997-11-05
Anticipated expiration: 2006-03-16

Abstract

The utility model relates to a left-hand ball pen, which mainly solves that the existing knob type ball pen often generate a problem that a pen core is retracted during the process of using. A spiral body is provided with a spiral groove in left rotating direction, which causes that when a protrusion on a knob slides along the spiral groove in counter-clockwise direction, the pen core is driven to move downwards along axis direction. The utility model has a good application foreground in the field of the ball pen.

Description

The levoform ball pen

The utility model relates to ball pen, especially a kind of levoform ball pen.

At present; existing knob type ball pen is the dextrorotation formula; be that clockwise direction rotates ball pen; pen core exposes and can use; but because the ball pen user gets used to using the right hand more; in use can produce the moment of rotation in the counterclockwise direction, so the pen core awkward situation of withdrawing occurs through regular meeting to ball pen.

Pen core was difficult for the levoform ball pen of withdrawal when the purpose of this utility model was a kind of the use is provided.

The technical solution of the utility model: be equipped with the helicla flute of left hand direction on the conveyor screw, make projection on the turn-knob when helicla flute counterclockwise slides, drive pen core and do vertically and move downward.

Advantage of the present utility model, because the helicla flute on the existing knob type ball pen conveyor screw is the dextrorotation direction, and adopt left hand direction on the conveyor screw of the present utility model, so right hand user is not prone to the situation of pen core withdrawal when using the knob type ball pen, be more convenient for using.

Narrate embodiment of the present utility model in conjunction with the accompanying drawings.

Fig. 1 is a schematic appearance of the present utility model;

Fig. 2 is for there being the A-A cutaway view of double spiral groove on the conveyor screw;

Fig. 3 is for there being the A-A cutaway view of single helical groove on the conveyor screw;

Fig. 4 is the front view that the turn-knob of double spiral groove is arranged;

Fig. 5 is the spirochetal front view that double spiral groove is arranged;

Fig. 6 is the front view that the turn-knob of single helical groove is arranged;

Fig. 7 is the spirochetal front view that single helical groove is arranged.

When the utility model was implemented, the helicla flute on the conveyor screw can be single groove or double flute, and corresponding turn-knob upper process can one or two.

Improvement part of the present utility model only is the helicla flute on the conveyor screw, and all the other structures are same as the prior art to be penholder 7 inside by formations such as pen core fixed cover 2, drive sleeve 3, turn-knob 4 (or 4 '), conveyor screw 5 (or 5 '), springs 9.During use counterclockwise the turn ball pen projection 6 on the turn-knob 4 (or 4 ') (or 6 ') is slided along helicla flute 1 (or 1 '), do vertically and move downward thereby drive pen core 8, up to entering groove 10.Because the helicla flute that the utility model conveyor screw adopts is a left hand direction, so when right hand user used to pen with the moment of counterclockwise rotating, the projection on the turn-knob can not produce to slide again and make the pen core retraction.

Claims

1, a kind of levoform ball pen that is made of conveyor screw, turn-knob etc. is characterized in that: be equipped with the helicla flute of left hand direction on the conveyor screw, make projection on the turn-knob drive pen core when helicla flute counterclockwise slides and do vertically and move downward.