CN2274485Y - Headwear visual acuity therapeutic instrument - Google Patents
Headwear visual acuity therapeutic instrument Download PDFInfo
- Publication number
- CN2274485Y CN2274485Y CN 96224719 CN96224719U CN2274485Y CN 2274485 Y CN2274485 Y CN 2274485Y CN 96224719 CN96224719 CN 96224719 CN 96224719 U CN96224719 U CN 96224719U CN 2274485 Y CN2274485 Y CN 2274485Y
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- CN
- China
- Prior art keywords
- matrix
- switch
- rotating shaft
- sides
- limit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a headwear visual acuity therapeutic instrument which comprises a basal body in the shape of an endless belt. The utility model is characterized in that the front end of the basal body is movably connected with an eye covering plate, and control circuits are arranged in both sides. When the head of a user slopes down about 20 DEG, a motor rotates forward, and the eye covering plate turns down and covers the line of sight; only when the head of the user rises and goes back to the normal position, the motor rotates backward, and the eye covering plate turns up to restore the line of sight, so the user is forced to keep normal distance of the line of sight. The utility model has the advantages of simple structure, low cost, no noise or influence on surrounding environment, convenient use, good effect, economical use and practicality.
Description
This utility model relates to a kind of human eyesight protector, particularly a kind of vision normalizer of wearing.
People are reading a book, when writing, too closely will have a strong impact on the vision of eyes as the distance of eyes and books.For reminding, protect particularly student's vision of people; devices such as many pre-myopia prevention warnings have appearred in the prior art; but their complex structures; the cost height, and alarm sound influences surrounding, and user is only played suggesting effect; have only initiatively and correct; the competence exertion effect, effect is undesirable, uses inconvenient.
The purpose of this utility model is in order to overcome above-mentioned weak point, and provide a kind of simple in structure, cost is low, silent, easy to use, the effective vision normalizer of wearing.
The vision normalizer of wearing of the present utility model comprises endless belt shape matrix, it is characterized in that in hoodwink plate of matrix front end flexible connection, the both sides control circuit being housed.
Fig. 1 is this utility model structural representation;
Fig. 2 is limit switch installation site figure;
Fig. 3 is a two-way admittance switch junctions composition;
Fig. 4 is the control circuit circuit diagram.
Now illustrated embodiment is made detailed description to this utility model in conjunction with the accompanying drawings.
The matrix 1 of wearing the vision normalizer is endless belt shape plastic body, and two sides and front are separately installed with removable cover, on the both sides that its rear end opening connects corresponding snap-fastener is housed respectively.Hoodwink plate 2 inboard limits are the arc limit that matches with matrix 1 front end face, fix a rotating shaft 3 by two, arc limit, rotating shaft 3 is snapped in the connection circular hole in matrix 1 front end face by matrix 1 front removable cover, fix a worm gear 4 on rotating shaft 3 one ends, worm screw 5 engagements on worm gear 4 and the DC micromotor D output shaft that is installed in the matrix 1.In the control circuit, the positive plate of dc source E is connected in series behind the on and off switch K and connects limit switch K
6, lower position switch K
5One end, K
6Other end serial connection reversal switch K
3The back also meets positive turn-off pass K
1, direct current generator D one end, K
5The other end is connected in series positive turn-off and closes K
2The back also meets the direct current generator D other end, reversal switch K
4One end, K
4The other end also meets K
1The other end, power supply E negative pole.Limit switch K
5, K
6Be chip switch, be installed in the dual-side of matrix 1 front end face respectively, the corresponding position in rotating shaft 3 is fixed with respectively hits post.K
1, K
3, K
2, K
4Be produced in two two-way admittance pipes, the conducting body is an insulator, and the two ends inwall is manufactured with the two-stage nitration metal contact layer of being separated by respectively, is equipped with slidably metal bar in the conduction pipe inner chamber.Conduction pipe, power supply E, K switch are fixed in matrix 1 both sides, the K exposing surface.
This utility model is owing to adopt above design, and when user head downward-sloping about 20 was spent, the metal bar in the conduction pipe is slide-actuating switching K forward
1, K
2The contact, motor D is just changeed, and hoodwink plate 2 is turned down and is blocked sight line, along with rotating shaft 3 is rotated, hits post with K
5Disconnection, K
6Closure, the motor D stall.Have only when lifting the recovery normal position on the user head, the metal bar in the conduction pipe slides backward the connection K switch
3, K
4The contact, the motor D counter-rotating, hoodwink plate 2 just can roll up the recovery sight line, forces user to keep normal optical range.Simple in structure, cost is low, silent, does not influence surrounding, and is easy to use, effective, economical and practical.
Claims (1)
1, a kind of vision normalizer of wearing, comprise that two sides and front are separately installed with the endless belt shape matrix (1) of removable cover, it is characterized in that matrix (1) front end flexibly connects a hoodwink plate (2), control circuit is housed in the both sides, the inboard limit of hoodwink plate (2) is the arc limit that matches with matrix (1) front end face, fix a rotating shaft (3) by two, arc limit, rotating shaft (3) is snapped in the interior connection circular hole of matrix (1) front end face by matrix (1) front removable cover, fix a worm gear (4) on rotating shaft (3) one ends, worm gear (4) and the worm screw (5) that is installed on the interior direct current generator D output shaft of matrix (1) mesh, in the control circuit, the positive plate of power supply E is connected in series behind the on and off switch K and connects limit switch K
6, lower position switch K
5One end, K
6Other end serial connection reversal switch K
3The back also meets positive turn-off pass K
1, direct current generator D one end, K
5The other end is connected in series positive turn-off and closes K
2The back also meets the direct current generator D other end, reversal switch K
4One end, K
4The other end also meets K
1The other end, power supply E negative pole, limit switch K
5, K
6Be chip switch, be installed in the dual-side of matrix (1) front end face respectively, the corresponding position in rotating shaft (3) is fixed with respectively hits post, K
1, K
3, K
2, K
4Be produced in two two-way admittance pipes, the conducting body is an insulator, and the two ends inwall is manufactured with the two-stage nitration metal contact layer of being separated by respectively, is equipped with slidably metal bar in the conduction pipe inner chamber, conduction pipe, power supply E, K switch are fixed in matrix (1) both sides, the K exposing surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 96224719 CN2274485Y (en) | 1996-10-05 | 1996-10-05 | Headwear visual acuity therapeutic instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 96224719 CN2274485Y (en) | 1996-10-05 | 1996-10-05 | Headwear visual acuity therapeutic instrument |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2274485Y true CN2274485Y (en) | 1998-02-18 |
Family
ID=33903604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 96224719 Expired - Fee Related CN2274485Y (en) | 1996-10-05 | 1996-10-05 | Headwear visual acuity therapeutic instrument |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2274485Y (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103584947A (en) * | 2013-11-06 | 2014-02-19 | 谭荣兵 | Myopia and humpback prevention instrument for teenagers and children |
CN104622610A (en) * | 2015-02-11 | 2015-05-20 | 东南大学 | Sitting posture correction device based on infrared visual range monitoring |
-
1996
- 1996-10-05 CN CN 96224719 patent/CN2274485Y/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103584947A (en) * | 2013-11-06 | 2014-02-19 | 谭荣兵 | Myopia and humpback prevention instrument for teenagers and children |
CN104622610A (en) * | 2015-02-11 | 2015-05-20 | 东南大学 | Sitting posture correction device based on infrared visual range monitoring |
CN104622610B (en) * | 2015-02-11 | 2016-08-17 | 东南大学 | Sitting-posture correction device based on infrared line-of-sight monitoring |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |