CN86202909U - Magnifying glass reader - Google Patents

Abstract

The utility model discloses a magnifying glass reader, which is characterized in that the magnifying glass reader comprises a plurality of single reflex arc hemisphere which are crossed and connected in parallel together, a lens made of transparent materials, and a space frame which can freely adjust the distance between the amplifying lens and the periodical, letterings and images. The distance of the between the amplifying lens and the periodical, the lettering and the image is adjusted, which can satisfy with the magnification needed by people. The lettering and the image after amplified is stabile and uniform, and the reader can not influence the eyesight; the utility model can prevent the development of the nearsightedness, and is beneficial to the human health. The utility model has the advantage of easy use.

Description

Magnifying glass reader

The utility model belongs to the magnifier reader.

Existing magnifier reader has hand-held and Wearable (glasses) usually.If using hand magnifying glass reads, because magnifier is continuing move left and right continually, in the move left and right process, to produce simultaneously inevitably and move up and down, can make people's the visual field and sighting target produce a kind of wild effect like this, make people's eye strain like that when car and boat are read books and periodicals and cause bathomorphic generation or development just like taking; Wearable (glasses) magnifier reader, though overcome above-mentioned shortcoming, because the hyperplastic distance of magnifier from certain limit is arranged, so people the elderly particularly puts on when having to read books and periodicals, is put down when looking around again, inconvenience is arranged very.

Task of the present utility model provides the magnifier reader that the distance of a kind of space framework formula, enlarging lens and reading thing literal or image can freely be adjusted.During use, as long as the magnifier reader is placed on the books and periodicals, adjust the desirable enlargement factor of font after, just can be convenient for people to read ， And and guarantee that eyes can not produce fatigue and damage eyesight.

Fig. 1 is one-piece construction figure of the present utility model.Among the figure: (1) underframe.It is a rectangle frame, rectangular interior sky, and the length that full line literal on the books and periodicals title page slightly is longer than on its long limit can be by the selected plurality of specifications of the different length of full line literal on the various books and periodicals title pages; In the minor face size of empty rectangle, as required can by books and periodicals title page longitudinal length 1/3rd, two/first-class selectes.An any surface level of selected rectangular frame, on the intersection point of the center line of its four edges, each processes a screw that need not penetrate, and makes four guide upright posts of assembling and uses.The mid point of two minor faces about same surface level is processed a left-handed and dextrorotation screw that does not penetrate respectively again, makes to install the adjusting bolt and uses.Four edges is wide to should be about 1.5 times of selected maximum screwhole diameter.

The brachmorphy frame should have certain weight, and purpose is to utilize its weight to flatten the books and periodicals title page, makes enlarging lens and books and periodicals title page keeping parallelism, amplifies the back uniformity to guarantee literal.(2) guide upright post.Four guide upright posts preferably are formed from aluminium with metal.The upper end of guide upright post is that Ban Yuan Tou And has " one " word groove.The cup head bottom is a polished rod, and the polished rod part of four guide upright posts, length should equate that the length of polished rod part is determined according to the ultimate range between magnifier reader needs amplification multiple that is magnifier and the books and periodicals literal.Be assemblied in nearly two guide upright posts in front by the reader, the polished rod part should have the millimeter scale of level on relative reader's direction, amplifies meter as the sign of leveling eyeglass and the multiple of literal.

The guide upright post lower end is a screw thread, and the external diameter of threaded portion is less than the diameter of polished rod part, and formed like this step (seam) helps the rigging position that guarantees that guide upright post is correct.

Guide upright post is the axis of guide that magnifier reader magnifier moves up and down, and is again the axis of guide of the compression spring of supporting magnifier, also is four root posts that constitute space framework formula magnifier reader.(3) setting nut.Be processed with straight decorative pattern or reticulate pattern on the face of cylinder of setting nut, one is left-handed, one is dextrorotation, cooperates with the left-handed of the magnifier reader left side and the right and dextrorotation bolt respectively, uses with distance and leveling enlarging lens that the right-hand man regulates between magnifier and books and periodicals literal simultaneously for the user.(4) regulate bolt.About revolve each one of stud bolt, revolve screw and be connected (as employing single ended bolt and the available welding of being connected of underframe) respectively with about limit, underframe left and right sides middle part.It cooperates with setting nut, plays a part common with setting nut.(5) enlarging lens.Make with optical glass or transparent material.It forms the magnifier with a plurality of reflex arcs by the crossing, And connection of the hemisphere of several simple reflex arches one, than the bireflection arc magnifier economical with materials that reaches same imaging purpose.

Enlarging lens also is a rectangle, what have crossing hemisphere one side is a smooth frame on every side, so that embed in the groove of rectangle picture frame, on the periphery of eyeglass, six screw axis line positions of corresponding underframe, through hole is all arranged, and the diameter of through hole is determined according to the diameter of determined guide upright post polished rod part and the diameter of adjusting bolt respectively.Because they are to be enclosed within respectively on guide upright post and the adjusting bolt in assembling, so, the through hole that cooperates with guide upright post, should be loosening clearance fit, after the assembling, must not influence the ability of its supporting magnifier because of cooperating the too tight load that bigger friction force increases spring that produces; With the unthreaded hole that the adjusting bolt cooperates, it cooperates requirement lower, as long as after assembling, through hole does not get final product with regulating bolt generation friction, otherwise will abrade screw thread.(6) picture frame.The most handy aluminum of picture frame is done.Front and back two parts by interface interlace are put together.Around its inboard is bathtub construction, and the smooth periphery of enlarging lens is with regard in the embedded groove, and groove width should be determined according to the thick of lens periphery, requires not produce loosening being advisable after the eyeglass embedding.Picture frame is a rectangle, and size equates that with underframe the width of periphery is also consistent with underframe.Simultaneously, the same with enlarging lens, six through holes are arranged on periphery, on the position in hole and the eyeglass the corresponding one by one ， And of through hole on same axial line, and the equal and opposite in direction of corresponding aperture.(7) spring.Can in standard component, select general compression helical spring for use, but require can freely pass through the lead polished rod part of principal post of internal diameter, and external diameter should be slightly larger than the diameter that passes through the guide upright post through hole on the picture frame.The drift of spring is slightly larger than the length of guide upright post polished rod part, as long as when its pressure can be adjusted to needed maximum amplification with magnifier.

The assembling of magnifier reader:

Earlier four guide upright posts are passed the through hole (cup head is consistent with the minute surface direction with a plurality of reflex arcs) on four jiaos in the magnifier respectively, on column, pack into spring then respectively, be fixed on the underframe one by one again; About two stud bolts that revolve are passed from the through hole at magnifier the right and left middle part respectively, be rotated with on underframe respectively again.

The utility model has the advantages that the multiple of magnifying text and image can freely be adjusted literal that is exaggerated after the adjustment and image stability, uniformity according to user's needs, the reader can not affect one's power of vision, the generation or the development of eye capable of preventing myopia are of value to health, and it is also convenient to use; When widely applying this reader, can dwindle printing font size general on the books and periodicals, save a large amount of paper, the collection of also being convenient to books and periodicals with carry, have good economic effect and social effect.

Claims (3)

1, a kind of magnifier reader is made up of optical material with bireflection arc and frame, but it is characterized in that the space framework of the enlarging lens made by several transparent materials with reflex arc and free adjustment magnifier and sighting target distance constitutes.

2,, it is characterized in that enlarging lens intersects one in parallel by several hemisphere and forms according to the described magnifier reader of claim 1.

According to the described magnifier reader of claim 1, it is characterized in that 3, four guide upright posts that are fixed on the underframe all are with spring, wherein by reader's two millimeter scales that level is arranged nearby.

Images