CN2248049Y

CN2248049Y - Vision health pen

Info

Publication number: CN2248049Y
Application number: CN 95246456
Authority: CN
Inventors: 林文
Original assignee: Individual
Current assignee: Zhuang Chunshu
Priority date: 1995-11-13
Filing date: 1995-11-13
Publication date: 1997-02-26
Anticipated expiration: 2005-11-13

Abstract

The utility model relates to an eyesight health care pen. The utility model is characterized in that a double-concave part is arranged at a tip sleeve of a penholder, a plastic core sleeve of a cartridge is connected with a restoring spring and a movable slot sleeve with a bulge, a line board for controlling the work of a relay and the relay with a star-shaped wafer are arranged in the penholder, and a pair of infrared probes which face to the direction of human eyes are arranged at the tail of the penholder. When the utility model is used for writing, emitted infrared beams are used as detecting signals which are reflected and received and are enlarged and compared with an electronic control circuit to judge whether sitting positions of a human body and the distance of both eyes are correct, and people can write when the eyes always keep the optimum distance (about 15 to 30 centimeters). The utility model has the functions of eyesight health protection and hunchback prevention for children.

Description

Vision health protection pen

This utility model relates to a kind of writing implement, particularly a kind of health care pen that helps protecting children's vision.

Existing as children institute generally the instrument of writing of use pencil or ball pen etc. are arranged, propelling pencil for example, pen core length can make things convenient for adjusting automatically, needn't cut pen with pocket knife.But above-mentioned tool comprises that propelling pencil only has writing function, can not help student's eyes to keep normalized distance from writing, thereby cause myopia or other visual disorders.

The purpose of this utility model is a kind of vision health protection pen that helps preventing myopia of student of design, rectifies that to write sitting posture correct thereby can remind at any time, makes eyes keep normalized distance from writing, thereby helps protecting children's vision health.

This utility model is realized by the following technical solutions: it comprises penholder, pen core chuck, sharp overlapping (also claiming nib), is located at the plastics core retainer plate 4 formation (see figure 1)s that point overlaps inner chamber, it is characterized in that: a, be provided with the double recess of putting as fixedly hold a pen (hold pen) at tip sleeve position, on the plastics core retainer plate 4 of pen core, be socketed with loose slot cover 5, be set with back-moving spring 6 on loose slot cover 5, the tail end of loose slot cover 5 is provided with projection (block); B, be provided with one at the penholder inner chamber and have " " electronic automatic control circuit (wiring board) of the relay of shape contact 12 and control relay operate as normal (promptly control contact 12 adhesives and loosen); the position of contact 12 on penholder is to be contained in to be positioned at a side that deviates from eyes; when normally writing (relay is not worked), and the projection of contact 12 can be touched mutually with the projection that loose slot overlaps 5 tail ends; C, be provided with a pair of infrared probe towards the human eye direction at the penholder afterbody, this probe is made up of infrared emission tube D and infrared receiver tube D '.

Vision health protection pen of the present utility model; though its profile is similar to common lettering pen tool; but it can make detectable signal through the reflection reception by the emission infrared ray when writing; amplify through the electronic control circuit (intending patent protection separately) that is contained in penholder inside again; relatively; whether sitting posture or the eyes of judging human body are correct apart from desktop; when in case the too close desktop of eyes writes; 12 adhesives move down electronic circuit board with regard to control relay task driven contact; make that to move retraction point cover (nib) behind the pen core inner and can not write; remove inhuman eyes and keep best Writing distance (about about 15-30cm); can recover to write; therefore; this utility model tool had both had writing function, also had protection children's vision health and the function that prevents hunchback.

Below in conjunction with accompanying drawing concrete structure of the present utility model and operation principle are described in further detail.

Fig. 1 is a kind of assembly structure sketch map (profile) of this utility model vision health protection pen.Fig. 2 be loose slot cover tail end projection (projection) with it corresponding touch "

" three kinds of working state schematic representations of shape contact;

Fig. 3 is the electrical schematic diagram of the electronic control circuit plate of control relay operate as normal in this utility model.

With reference to Fig. 1, Fig. 2, wherein: 1, pen core (available disposable pen core), 2, pen core chuck, 3, point cover (also claiming nib), 4, plastics core retainer plate (being used for clamping pen core chuck), 5, loose slot cover, 5-1 loose slot cover tail end projection (also claiming projection), 6, point cover double recess, 7, back-moving spring, 8, step connector (connecting point cover and penholder uses), 9, the reseting pressuring spring of removable cover sheet head end, 10, relay base (copper sheet), 11, movable cover plate (being installed in the penholder leading portion), 12, on the relay "

" the shape contact, 12-1 contact front end projection, 13, relay J; 14, contact pin (hinged usefulness), 15, contact resets and use extension spring, 16, the reseting pressuring spring at removable cover sheet tail end place; 17, penholder, 18, circuit board, 19, aneroid battery; 20, the battery plastics cover, 21, the copper tooth in the battery plastics cover, 22, conductive contact blade (being fixed on the tail medicated cap); 23, the contact spring, 24, the tail medicated cap, 25, power lead (being connected); 26, infrared emission tube D, 27, red line receiving tube D ＇ with the copper tooth.

With reference to accompanying drawing as can be known, this utility model also has following technical characterictic when specific design is made:

One, described loose slot cover 5 is provided with guide rail, establishes in the step connector 8 of guide groove in loose slot cover 5 is set in, and can move forward and backward along guide groove in this step connector.Be convenient to like this guarantee that loose slot overlaps the projection of afterbody and the protruding centering of relay contact is touched.

Two, the afterbody of the contact 12 of described relay is movably articulated in the afterbody of relay base 10, simultaneously is equipped with one at the tail end of contact and resets with extension spring 15.

Three, also be provided with the movable cover plate 11 that can touch mutually with contact on the penholder shell of relay contact 12 lateral surface, the two ends of this activity cover plate are equipped with reseting pressuring

spring

9 and 16 respectively.

Four, the inner chamber at penholder 17 also is provided with battery plastics cover 21, is connected with tail medicated cap 24 at the penholder tail end, and interlocking has conductive contact blade 22 and spring 23 to constitute power supply (switch) circuit on the tail medicated cap.

With reference to Fig. 3, the electronic control circuit on this utility model circuit board 18 is by the vibration radiating circuit, receives amplifying circuit, comparison circuit, drive circuit and power supply (on-off circuit) formation, and vibration radiating circuit wherein is by V ₁A (the 1st, 2,3 feet of LM324 integrated package), resistance R ₇, R ₈, R ₉, R ₁₀, R ₁₁Audion Q ₁, infrared emission tube D and capacitor C ₆Constitute, during circuit working, the AC signal of the 38KHZ that vibration is sent is through Q ₁Promote D and launch infrared signal; Reception amplifying circuit wherein is by V ₁D (LM324 integrated package the 12nd, 13,14 feet), resistance R ₃, R ₄, R ₅, R ₆Infrared receiver tube D ＇, capacitor C ₂, C ₃, C ₄And C ₅Constitute, during circuit working, the signal that D ＇ receives is through C ₃Be coupled to operational amplifier V ₁D the 13rd foot is given current rectifying and wave filtering circuit after amplifying; Detect the signal of telecommunication, after the output of 14 feet, through c with people's eyes variable in distance ₂Be coupled to comparison circuit; Comparison circuit wherein is by comparator V ₁C (LM324 integrated package the 8th, 9,10 feet), resistance R ₁, R ₂, VR ₁₂, diode D ₁, D ₂, D ₃And capacitor C ₁Constitute, during circuit working, through C ₂The AC signal that Rhizoma Nelumbinis is closed is by D ₁, D ₂, C ₁, R ₁The current rectifying and wave filtering circuit that constitutes obtains a DC voltage, is defeated by comparator V ₁The 10th foot of C is simultaneously through R ₁, VR ₁₂, D ₃Bleeder circuit has been obtained reference voltage and has been defeated by comparator V ₁C the 9th foot, both signals after relatively are by V ₁(the 10th foot voltage is during greater than the 9th foot voltage for C the 8th foot output, high level of the 8th foot output, otherwise, low level of the 8th foot output), when the voltage signal with people's eyes variable in distance reaches threshold values, relatively upset, relay J adhesive, when holding the voltage signal that continues less than threshold values always, time-delay 1.1R ₂C ₁Recover after the time constant; Drive circuit wherein is by relay J and audion Q ₂Constitute.During circuit working, through comparison circuit V ₁When the signal of C the 8th foot output is high level, Q ₂Saturation conduction, relay J adhesive at this moment (can not write), otherwise, Q ₂End J do not work (recovery is write).

Using method process of the present utility model is as follows:

With reference to accompanying drawing 1, at the penholder afterbody aneroid battery 19 is housed, as working power.When not writing, power supply is not switched on, and circuit is not worked (relay J is not worked yet), at this moment, " " the protruding 12-1 of shape contact 12 front ends is arranged in the top (seeing a figure of Fig. 2) of overlapping 5 tail ends projection 5-1 with loose slot, at this moment pen can not write.When desiring to write, (should keep correct sitting posture), screw plastics tail medicated cap 24 clockwise, conductive contact blade 22, the spring 23 of civilian dress on the tail medicated cap touches power supply (aneroid battery) negative pole, (because of eyes and infrared transmitting tube distance greater than 15cm, relay is not worked), hold the sharp concave-concave place 6 of overlapping respectively with thumb and forefinger, movable cover plate 11 on penholder 17 leading portions touches (pressurized) naturally and locates in tiger like this, under the pressure of tiger place skin, movable cover plate 11 compresses inward, and with relay 13 on " " shape contact 12 touches (pressure), makes also compression inward of contact 12, and the projection of contact 12 and the projection (piece) that loose slot overlaps 5 tail ends are on the same straight line, constitutes the state that contacts (b that sees Fig. 2 schemes), makes pen core can not contract inward (can normally write).Work as abnormal sitting posture, when especially the distance between eyes and the infrared emission tube D was less than 15cm, infrared receiver tube D ' received the reflected signal of transmitting tube D, amplified comparison process through control circuit, made Q ₂Saturation conduction makes relay J get electric work again, and contact 12 adhesives are sunk, and causes the projection of contact 12 to be lower than the projection (seeing the c figure of Fig. 2) that loose slot overlaps 5 tail ends, and both contact state and disappear, and pen core 1 can be set back in the point cover 3 when writing, and so just can't write.Have only when eyes and infrared emission tube D distance greater than the above normalized distance of 15cm from the time, the infrared signal amplitude that infrared receiver tube D ' receives is less than threshold values, Q ₂Do not work by J, make " " projection of shape contact 12 and the projection that loose slot overlaps 5 tail ends return on the same straight line again, both contact state at formation, and under the effect of back-moving spring 6, pen core stretches out normal position, point cover outside again, can write again simultaneously.The used pen core of this utility model can adopt disposable propelling pencil pen core or refill for ball-point pen.

Claims

1, a kind of vision health protection pen comprises penholder (17), pen core chuck (2), point cover (3), plastics core retainer plate (4), it is characterized in that:

A, be provided with as the double recess (6) that fixedly holds a pen a little at tip sleeve position, be socketed with loose slot cover (5) on the plastics core retainer plate (4) of pen core, put at loose slot and be set with back-moving spring (7), the tail end that loose slot overlaps is provided with projection (5-1);

B, be provided with one at the penholder inner chamber and have " " relay J (13), and the electronic automatic control circuit plate (18) of control relay operate as normal of shape contact (12); the position of relay contact (12) on penholder is to be contained in to be positioned at a side that deviates from eyes; when normally writing, and the projection of contact (12) can be touched mutually with the projection of loose slot cover (5) tail end;

C, be provided with a pair of infrared probe towards the human eye direction at the penholder afterbody, this probe is made up of infrared emission tube D and infrared receiver tube D '.

2, vision health protection pen according to claim 1 is characterized in that described loose slot cover (5) is provided with guide rail, establishes in loose slot cover (5) is set in the step connector (8) of guide groove, and can move forward and backward along guide groove in this step connector.

3, vision health protection pen according to claim 1 is characterized in that the afterbody of the contact (12) of relay is movably articulated in the afterbody of relay base (10), simultaneously is equipped with one at the tail end of contact and resets with extension spring (15).

4, vision health protection pen according to claim 1 is characterized in that also being provided with the movable cover plate (11) that can touch mutually with contact on the penholder shell of the lateral surface of relay contact (12), the two ends of this activity cover plate are equipped with reseting pressuring spring (9) and (16) respectively.

5, vision health protection pen according to claim 1 is characterized in that also being provided with battery plastics cover (21) at the inner chamber of penholder, is connected with tail medicated cap (24) at the penholder tail end, and interlocking has conductive contact blade (22) and spring (23) to constitute power switch circuit on the tail medicated cap.