CN208118762U - A kind of Paper book cover of symmetric double eye-splice-type fastening cornerite - Google Patents

Abstract

A kind of Paper book cover of symmetric double eye-splice-type fastening cornerite,When packet book first along perpendicular broken line vertical tabs towards Paper book cover interior folding,Overlap to two symmetrical petal tongues together,Then along lateral fold line transverse flap towards interior folding,Followed by respectively oblique broken line II and oblique broken line III towards the direction of vertical tabs and transverse flap fold,Make the angle of one 45 ° of formation between oblique broken line II and oblique broken line III,Obtain 45 ° of ∠,∠67.5°,67.5 ° of ∠ of isosceles triangle ABC,Two panels petal tongue is using the perpendicular bisector AD on the side BC of isosceles triangle ABC as symmetry axis mirror image,Two symmetrical petal tongues are inserted into respectively in corresponding notch slot again,When insertion once by the slightly bending of tongue barb,It is flattened again after insertion,At this moment tongue barb is crushed under vertical tabs and just past the range of notch slot,Petal tongue can be made tightly to be stuck in notch slot in this way,It will not be caused to slit from notch slot because of flipbook.

Description

A kind of Paper book cover of symmetric double eye-splice-type fastening cornerite

Technical field

The utility model relates to school supply and stationery fields, specifically design about a kind of structure of Paper book cover.

Background technique

When every season of starting to school all is Paper book cover fast sale, the Paper book cover angle wrapping structure that stationer's is sold is stereotyped, big Same small difference, many students lose purchase enthusiasm to this kind of Paper book cover.

Dull mediocre Paper book cover pattern allows many students that would rather select packet book of oneself cutting a sheet of paper.

By above-mentioned investigation, a kind of angle wrapping structure firm stable is designed, while having both certain folding difficulty and causing student The Paper book cover for interest of starting has Development volue.

Summary of the invention

The utility model provides a kind of Paper book cover with symmetric double eye-splice-type fastening cornerite, has on the back cover of Paper book cover Convenient for checking the head of same day number of weeks, material can select the paper for covering books or brown paper of 120g or so.

In order to solve the above-mentioned technical problem, which includes notch slot, lateral fold line, perpendicular broken line, oblique broken line, petal Tongue, five-petaled flowers disk, rivet, round turntable, perpendicular tabs, cross break piece, spine extend tabs, subject frame, tongue barb, spine, Spine broken line, back cover, cover, hollow out cheese, number of weeks.

Above-mentioned Paper book cover has α=β=γ=δ=22.5 ° when being fully deployed, angle α is made of oblique broken line I and oblique broken line II, folder Angle beta is made of oblique broken line II and perpendicular broken line, and angle γ is made of perpendicular broken line and oblique broken line III, and angle δ is by oblique broken line III and tiltedly Broken line IV is constituted.

Above-mentioned Paper book cover has Φ=θ=45 ° when being fully deployed, angle Φ is made of lateral fold line and oblique broken line I, and angle theta is by cross Broken line and oblique broken line IV are constituted.

Above-mentioned Paper book cover, wherein spine extends tabs and can both cut away, and can also retain, be filled with admiration after reservation into Paper book cover The folded upper and lower ends to reinforce spine.

Above-mentioned Paper book cover, wherein spine portion has three spine broken lines, is applicable to the books of different-thickness.

Above-mentioned Paper book cover, wherein in subject name can be filled in the subject frame of five-petaled flowers shape.

Above-mentioned Paper book cover makes two symmetrical flowers wherein perpendicular tabs is folded along perpendicular broken line to Paper book cover center Valve tongue overlaps to together, then cross break piece is folded along lateral fold line to Paper book cover center, then oblique broken line II to perpendicular folding Piece direction folds, and oblique broken line III is folded to cross break piece direction, the angle between oblique broken line II and oblique broken line III is 45 °, shape At the isosceles triangle ABC of 45 ° of a ∠, 67.5 ° of ∠, 67.5 ° of ∠, two panels petal tongue is with the side BC of isosceles triangle ABC On perpendicular bisector AD be symmetry axis mirror image.

Above-mentioned Paper book cover, wherein two symmetrical petal tongues are inserted into respectively in corresponding notch slot, when insertion, is needed Once the slightly bending of tongue barb, tongue barb is flattened again after waiting insertion, at this moment tongue barb is crushed on perpendicular tabs Below and just past the range of notch slot, petal tongue can be made tightly to be stuck in notch slot in this way, it will not It is caused to slit from notch slot because of flipbook.

Above-mentioned Paper book cover prints five-petaled flowers disk in the back cover of Paper book cover, is printed on 5 days workaday number of weeks above, circle turns Disk is fixed on five-petaled flowers disk by rivet, can be manually rotated round turntable, and the number of weeks of some day can penetrate round turntable On hollow out cheese show that and remaining number of weeks can not then be seen, this head was convenient for the clearly prompt same day Number of weeks.

The beneficial effects of the utility model are embodied in the structure using symmetric double eye-splice-type fastening cornerite, have centainly It folds difficulty and forms interest, the enthusiasm of starting of student can be excited, in addition have on Paper book cover convenient for prompt same day number of weeks Head.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the structure principle chart when book angle of the utility model is fully deployed.

Fig. 2 is the first structure principle chart when the book angle of the utility model folds.

Fig. 3 is the third structure principle chart when the book angle of the utility model folds.

Fig. 4 is the 4th kind of structure principle chart when the book angle of the utility model folds.

Fig. 5 is the structure principle chart after the book angle of the utility model is wrapped completely.

Fig. 6 is the structure principle chart of the head convenient for prompt same day number of weeks of the utility model.

1. notch slots in figure, 2. lateral fold lines, 3. perpendicular broken lines, 4. oblique broken line I, 5. oblique broken line II, 6. petal tongues, 7. are tiltedly Broken line III, 8. oblique broken line IV, 9. five-petaled flowers disks, 10. rivets, 11. round turntables, 12. perpendicular tabs, 13. cross break pieces, 14. spines Extend tabs, 15. subject frames, 16. tongue barbs, 17. spines, 18. spine broken lines, 19. back covers, 20. covers, 21. hollow out cakes Shape, 22. number of weeks.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawing.

As shown in Figure 1, the Paper book cover of symmetric double eye-splice-type fastening cornerite consists of the following parts：Notch slot（1）, it is horizontal Broken line（2）, perpendicular broken line（3）, oblique broken line I（4）, oblique broken line II（5）, petal tongue（6）, oblique broken line III（7）, oblique broken line IV （8）, five-petaled flowers disk（9）, rivet（10）, round turntable（11）, perpendicular tabs（12）, cross break piece（13）, spine extend tabs（14）, Subject frame（15）, tongue barb（16）, spine（17）, spine broken line（18）, back cover（19）, cover（20）, hollow out cheese（21）, Number of weeks（22）.

Wherein oblique broken line I（4）With oblique broken line II（5）Between angle be α, oblique broken line II（5）Perpendicular broken line（3）Between folder Angle is β, erects broken line（3）With oblique broken line III（7）Between angle be γ, oblique broken line III（7）With oblique broken line IV（8）Between folder Angle is δ, then has α=β=γ=δ=22.5 °；Lateral fold line（2）With oblique broken line I（4）Between angle be Φ, lateral fold line（2）And bias Line IV（8）Between angle be θ, then have Φ=θ=45 °.

Wherein spine extends tabs（14）It can cut away, can also fold and retain to Paper book cover center.

Wherein spine（17）On have three spine broken lines（18）To be suitable for the books of different-thickness.

It is wherein in the subject frame of five-petaled flowers shape（15）In can fill in subject name.

As shown in Fig. 2, perpendicular tabs（12）Along perpendicular broken line（3）To Paper book cover center fold, at this moment two symmetrically Petal tongue（6）It can overlap to together.

As shown in figure 3, then cross break piece（13）Along lateral fold line to（2）Paper book cover center folds.

As shown in figure 4, then oblique broken line II（5）To perpendicular tabs（12）Direction folds, oblique broken line III（7）To cross break Piece（13）Direction folds, oblique broken line II（5）With oblique broken line III（7）Between angle be 45 °, form 45 ° of ∠, ∠ 67.5 °, 67.5 ° of ∠ of isosceles triangle ABC, two panels petal tongue（6）With vertically dividing equally on the side BC of isosceles triangle ABC Line AD is symmetry axis mirror image.

As shown in figure 5, two symmetrical petal tongues（6）It is inserted into corresponding notch slot respectively（1）In, it needs when insertion Tongue barb（16）Slightly bending once, waits after being inserted into again tongue barb（16）Flattening, at this moment book angle is wrapped completely.

As shown in fig. 6, in the back cover of Paper book cover（19）On be printed on five-petaled flowers disk（9）, it is printed on 5 days workaday weeks above Number, round turntable（11）Pass through rivet（10）It is fixed to five-petaled flowers disk（9）On, it can be manually rotated round turntable（11）, some day Number of weeks can penetrate round turntable（11）On hollow out cheese（21）It shows, and remaining number of weeks can not then be seen See.

Claims (2)

1. a kind of Paper book cover of symmetrical double-socket type fastening cornerite, it is characterized in that cornerite part uses symmetric double eye-splice-type structure, The symmetrical petal tongue of two of them is inserted into corresponding notch slot, and tongue barb is crushed below vertical tabs And just past the range of notch slot so that petal tongue is tightly stuck in notch slot, will not because of flipbook and It is caused to slit from notch slot.

2. the Paper book cover of symmetrical double-socket type fastening cornerite according to claim 1, it is characterized in that in the back cover of Paper book cover On be printed on five-petaled flowers disk, be printed on five days workaday number of weeks above, round turntable is fixed on five-petaled flowers disk by rivet, Round turntable is rotated, the number of weeks of some day can be shown through the hollow out cheese on round turntable, and remaining week It is several, it can not see, this head is conducive to the number of weeks for clearly prompting the same day.