CN2088039U

CN2088039U - Nearsightedness-preventing pen

Info

Publication number: CN2088039U
Application number: CN 91201618
Authority: CN
Inventors: 李兰舫; 何柏乾
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-01-26
Filing date: 1991-01-26
Publication date: 1991-11-06

Abstract

The utility model belongs to an improved writing instrument, in particular to a propelling pencil and a ball-point pen. The utility model is characterized in that the 'an inch' point of a pen holder is provided with a movable control tab; the diameter of the place corresponding to a movable pen core is thickened to form a stopping and clamping block. When the pencil is held correctly, the control tab is bent inward to support the stopping and clamping block by holding power, so writing can be continued regularly, or the pen core can be recessed in the pen holder under the counterforce of writing and writing can not be continued. The utility model can rigidly control the distance of grasping pens for children, having positive effect on protecting the vision.

Description

Nearsightedness-preventing pen

The utility model relates to a kind of improved writing appliance, particularly a kind of movable ball pen and pencil.

As everyone knows, China primary and secondary students' rate of myopia was growing on and on over past ten years.And the major reason that causes myopia is bad eye hygiene, bad read-write posture." three one " reality of the one-inch of carrying out in the teaching, a fist, a chi is the good measure of pre-myopia prevention.In " three one ", " one-inch " is crucial, only accomplishes " one-inch ", just may realize " fist ", " chi ".Disclose a kind of health care pen write among the Chinese patent application 88205709.X and be provided with the finger nest, formed " one-inch " and be accustomed in the hope of students being held a pen feel comfortably cool at distance nib 33.3mm place.Discovery is established and is referred to that nest can not prevent the pen holding posture less than " one-inch " effectively in actual the use, and this scheme is unsatisfactory.

The purpose of this utility model be for overcome deficiency in the above-mentioned technology provide a kind of only locate to hold a pen at " one-inch " just can write, otherwise can not write and use to carry and all feel Nearsightedness-preventing pen easily.

Solution of the present utility model is following consideration: establish control strip at penholder from the place of holding a pen of pen " one-inch ", and this control strip upper end and penholder one, all the other limits and penholder have the slit state that becomes to overhang.The overstriking of corresponding site diameter forms the locking card shelves on movable refill in addition.During use such as finger be held on the control strip, then control strip is because of the stressed just inwardly curved card shelves that withstand, movable refill just can not shunk back and can normally write.Be not held on the control strip as finger, then control strip does not bend, and the reaction force that writes is enough to make movable refill to be shunk back in the penholder, so that can't write, and reaches the purpose of warning, and pen core can be appeared again under the gravity effect.

Fig. 1 is the overall schematic of Nearsightedness-preventing pen; Fig. 2 is the Nearsightedness-preventing pen control strip location drawing; Fig. 3 is magnetic-type retraction pen core fixed mechanism schematic diagram; Fig. 4 is the A-A cutaway view of Fig. 1.

Below in conjunction with accompanying drawing is that example is further described the utility model with the propelling pencil.

Among Fig. 1, the 1st, penholder, available plastics or metal are made, and locate to establish a bar shaped control strip 2 at penholder from nib " one-inch ", and the bar shaped control strip can assemble up separately.Control strip 2 upper ends and penholder 1 one in this example, all there is the slit on its excess-three limit with penholder 1, makes it be in the state (see figure 2) that overhangs.The length of control strip 2 can curve inwardly to suitable with little power that it is held a pen.Movable refill 3 forms locking card shelves 4 with the position diameter overstriking that control strip 2 adapts.Control strip 2 can be established two or three as required, and the angle between per two is advisable about 120 °, in order to holding a pen.

For ease of carrying, the utility model has been considered pen core retraction fixed mechanism.This retraction fixed mechanism by fixator 5 with jump ring 6 and the (see figure 4) that scrobicular ring 7 is formed on the pen core 3.Need not the time, as long as the pressure cap 8 of drawing pen core 3 ends, make whole Zhi Bixin rise to jump ring 6 and block scrobicular ring 7 and get final product.As long as press lower pressing cap 8, make scrobicular ring 7 break away from jump ring 6 and can recover to use.Also have a scheme to be, fixator 5 usefulness iron are made, and other has the permanent magnetism collar 9, admittedly be placed in (see figure 3) on the pen core.When not using, as long as pen is inverted, under the deadweight effect, pen core is promptly poured in the penholder, fixator 5 and the collar 9 adhesives.Press lower pressing cap 8, can recover again to use.

For the purpose of easy to use, the pen core 3 of shrinking back into penholder 1 can be appeared again automatically, be provided with pen core 3 mechanism that appears again automatically at a tail again in this example, this mechanism is the fixator 5 by penholder 1 tail end, bulge loop 10 on the movable refill 3 and the spring 11 that is placed on the pen core 3 are formed, on the spring 11 with fixator 5, contact with bulge loop 10 down.Nib just in time all exposes at ordinary times, and control strip just in time can withstand locking card shelves 4 when holding a pen.Not right when pen holding posture, when nib was retracted in the penholder, as long as nib one leaves paper, pen core was promptly appeared again under the elastic force effect, than appearing again by deadweight conveniently.

On the penholder of control strip 2 lower ends, establish a limit again and refer to protruding circle 12, with unconscious action of holding down in preventing to write.

Propelling pencil refill changes movable refill for ball-point pen into, and structure is also identical.

The distance that holds a pen has been controlled in the utility model strictness, has prevented the wrong custom that holds a pen, and uses easy to carryly, to protecting children's eyesight good effect is arranged.

Claims

1, a kind of Nearsightedness-preventing pen comprises penholder 1, movable refill 3, it is characterized in that penholder 1 place of holding a pen is provided with control strip 2, described control strip 2 upper ends and penholder 1 one, and all the other limits and penholder 1 leave the slit state that becomes to overhang; The overstriking of corresponding site diameter forms locking card shelves 4 on the described movable refill 3.

2, Nearsightedness-preventing pen as claimed in claim 1 is characterized in that being provided with pen core retraction fixed mechanism, this fixed mechanism by fixator 5 with jump ring 6 and the scrobicular ring 7 on the pen core 3 formed.

3, Nearsightedness-preventing pen as claimed in claim 1 is characterized in that pen core retraction fixed mechanism can also be that fixator 5 is iron, is installed with the permanent magnetism collar 9 on the pen core.

4, Nearsightedness-preventing pen as claimed in claim 1 or 2, it is characterized in that its tail is provided with the pen core mechanism that appears again automatically, this mechanism is made up of bulge loop 10 on a tail fixator 5, the movable refill 3 and the spring 11 that is placed on the pen core, on the spring 11 with fixator 5, contact with bulge loop 10 down.

5, Nearsightedness-preventing pen as claimed in claim 1 or 2 is characterized in that being provided with a limit and refers to protruding circle 12 on the penholder of control strip 2 lower ends.

6, Nearsightedness-preventing pen as claimed in claim 3 is characterized in that being provided with a limit and refers to protruding circle 12 on the penholder of control strip 2 lower ends.

7, Nearsightedness-preventing pen as claimed in claim 4 is characterized in that being provided with a limit and refers to protruding circle 12 on the penholder of control strip 2 lower ends.