CN201394118Y

CN201394118Y - Myopia preventing device for limiting elbow bending angle and controlling stadia distance

Info

Publication number: CN201394118Y
Application number: CN2009200235232U
Authority: CN
Inventors: 曹青澜
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-12
Filing date: 2009-03-12
Publication date: 2010-02-03
Anticipated expiration: 2019-03-12

Abstract

The utility model relates to a myopia preventing device for limiting the elbow bending angle and controlling the stadia distance, which controls the reading and writing distance through controlling the elbow joint bending degree. The utility model has a structure that two plates are respectively fixed on the upper arm and the fore arm; vertical small side plates are respectively arranged at both sides of one end of the plates near the elbow; the two plates are integrally hinged through mutual connection of side plates, and can rotate up and down; and the plates are all made of rigid materialssuch as plastics, metal or the like. A nylon hasp position limiting device is arranged at an elbow part at the plate bottom for limiting the displacement distance of the ends of the two plates duringrotation, so the integral rotating angle of the two plates is controlled, the bending degree of the arm is limited, and the short distance from the eyes to books during reading and writing is indirectly limited. The myopia preventing device can be fixed on one elbow usually used by users, can also be hidden in a clothes sleeve, and can limit the minimum stadia distance during reading and writing.The utility model has the advantages of simple structure, small size, low manufacture cost, convenient use and good myopia preventing effect.

Description

The myopia prevention device of restriction elbow angle of bend control sighting distance

Technical field

This utility model is a kind of by control elbow arthrogryposis degree, thereby controls the pre-myopia prevention device of reading and writing distance indirectly.

Background technology

At present, the teenager reading and writing posture is incorrect, is the major reason that causes myopia with the eye hypotelorism.Existing myopia prevention device adopts the form of stent support head or restriction health LBB often, directly limits the distance of eyes and books, reaches the purpose of control sighting distance.Such device volume is bigger, or can not move easily, or service condition is limited.User uses very inconvenient, and is uncomfortable, is difficult to adhere to use, and effect is bad.

Summary of the invention

The inventor is through observe finding, the people is when reading and writing, and eyes angle in books distance and the arm bending becomes positive correlation, and promptly sighting distance is more little, and the interior angle of arm bending is more little; Otherwise when sighting distance was big, the arm trend was stretched, and crooked interior angle is big more.The myopia prevention device of this utility model restriction elbow angle of bend control sighting distance is by restriction elbow arthrogryposis degree, thereby the minimum range of hands and health when having limited read-write reaches indirectly and controls the purpose of sighting distance greater than 30 centimetres of suitable distance.

The technical scheme that its technical problem that solves this utility model adopts is: two blocks of plates that are separately fixed at upper arm and forearm, this slab integral comprises near ancon one end both sides respectively the little side plate of holding up, the side plate height approximates ancon thickness, and distance is slightly larger than the elbow width between biside plate.Plate is made by hard materials such as plastics or metals.By mode interconnects side plate with rivet is hinged etc., make two boards integral body hinged, can rotate up and down.The ancon place is provided with the velcro stopping means at the bottom of the plate, end displacement distance when limiting the two boards unitary rotation, thus the whole corner of control two boards has also just limited the arm degree of crook, eyes are too small to the distance of books when avoiding reading and writing, and play the effect of pre-myopia prevention.

The beneficial effects of the utility model are that the myopia prevention device of restriction elbow angle of bend control sighting distance can be fixed on the elbow portion that the user custom is used a side arm, minimum sighting distance during restriction read-write easily, simple in structure, volume is little, and is easy to use, and the myopia prevention effect is better.When using the myopia prevention device of restriction elbow angle of bend control sighting distance, after setting correct status the velcro of ancon stopping means is buckled well, can make arm inwardly further bending again, but can stretch, so just guarantee that eyes and books distance no longer reduces.When not using, as long as the velcro of ancon stopping means is opened, elbow joint promptly can free bend, and arm reactivates freely.When the myopia prevention device of restriction elbow angle of bend control sighting distance uses, can also ensconce in the coat-sleeve after being fixed on the arm, others is difficult for discovering, and strip plays sleeve and buckles well the velcro of ancon stopping means and can normally bring into play the minimum read-write of restriction sighting distance during use; Not the time spent, the velcro of untiing the ancon stopping means recovers normal activity with regard to arm.

Description of drawings

Below in conjunction with drawings and Examples this utility model is further specified.

Fig. 1 is a structure chart of the present utility model.

Fig. 2 is the sketch map of an embodiment.

Among the figure 1.. the plate that is fixed on upper arm is 2.. the plate that is fixed on forearm 3.. the fixing band that velcro arranged is 4.. the velcro of stopping means 5.. hinged rivet

The specific embodiment

In Fig. 1,1. be fixed on the plate of upper arm and the plate that 2. is fixed on forearm by 5. hinged rivet is hinged, the plate that 1. is fixed on the plate of upper arm and 2. is fixed on forearm respectively has a fixing band that 3. velcro is arranged, and can be fixed on two boards on upper arm and the forearm.Elbow position, two boards bottom is provided with the 4. velcro of stopping means.

In embodiment illustrated in fig. 2, use the elbow portion of a side arm in user reading and writing custom, there is the fixing band of velcro 3. to walk around upper arm and forearm respectively, 1. 2. be fixed on the arm with the plate that is fixed on forearm the plate that is fixed on upper arm, at this moment, arm 5. can free bend by hinged rivet.After selecting the suitable angle of bend of elbow joint, 4. the velcro of plate bottom stopping means is buckled well, arm just can not be inwardly further crooked again, can be unaffected but stretch, certain range of activity is arranged.

Claims

1, a kind of myopia prevention device that limits elbow angle of bend control sighting distance, by control elbow arthrogryposis degree, thereby the pre-myopia prevention device of control reading and writing distance, it is characterized in that: two blocks of plates that are separately fixed at upper arm and forearm, plate respectively has the little side plate of holding up near ancon one end both sides, and the side plate height approximates ancon thickness, and distance is slightly larger than the elbow width between biside plate, interconnect by side plate and to make two boards integral body hinged, can rotate up and down; Plate is made by hard materials such as plastics or metals, the ancon place is provided with the velcro stopping means at the bottom of the plate, end displacement distance when limiting the two boards rotation, thereby the whole corner of control two boards, also just limited the arm degree of crook, eyes are too small to the distance of books when avoiding reading and writing.