CN2440382Y

CN2440382Y - Special desk and chair against myopia

Info

Publication number: CN2440382Y
Application number: CN 00254290
Authority: CN
Inventors: 李庆福
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-21
Filing date: 2000-09-21
Publication date: 2001-08-01
Anticipated expiration: 2010-09-21

Abstract

The utility model relates to a desk and chair against myopia, particularly the desk and chair against myopia for the special purpose of students. The utility model comprises a chair with a backrest. The back of the backrest is fixedly provided with an alarm box which is provided with an appliance switch and a warning device. The appliance switch is provided with a shoulder strap which is connected with one end of a tension spring, and the other end of the shoulder strap is hooked to the front of the backrest. The utility model can alarm and correct sitting posture at any time to prevent the myopia of eyes.

Description

The special-purpose pre-myopia prevention tables and chairs of student

The utility model relates to a kind of pre-myopia prevention tables and chairs, especially refers to the pre-myopia prevention tables and chairs of student's special use.

At present, when the student listens to the teacher, does one's assignment in school and family reviews lessons, health occurs through regular meeting and pull to desktop, cause eyes and books or operator near excessively, often this eyes myopia easily of going down.

In view of this, the purpose of this utility model provides the special-purpose pre-myopia prevention tables and chairs of a kind of student, utilizes a braces that the people back is pulled to back, when human body forwards tilt to a certain degree, braces is pulled forward to a certain degree, and warning horn can give a warning, and recovers correct sitting posture with the prompting human body.

The purpose of this utility model is achieved in that it comprises the chair with backrest, set firmly an alarm box in the backrest back, be provided with electric switch and attention device in this alarm box, on this electric switch, be provided with the braces that connects with the tension spring end, and this braces other end hung to the backrest front.

Described attention device is Vib. or speech sound device.

Owing to adopt such scheme: can warn at any time and correcting sitting postures, with the prevention hypometropia.

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

Fig. 1 the utility model exemplary embodiments synoptic diagram.

Fig. 2 the utility model exemplary embodiments circuit theory diagrams.

Among the figure:

1, chair 11, backrest 2, braces

21, hook 22, tension spring 3, alarm box

31, box body 32, battery 33, electric switch

34, attention device

Present embodiment comprises chair 1, braces 2 and alarm box 3, as shown in Figure 1, and wherein:

Chair 1 is conventional chair or the desk and chair with backrest 11, belongs to prior art.

One end of braces 2 connects a hook 21, and the other end connects a tension spring 22.

Alarm box 3 is fixed in backrest 11 back of chair 1, be provided with battery 32, electric switch 33 and attention device 34 in its box body 31, as: Vib. (having motor or the interior Vib. of pager that off-centre is got rid of the iron spindle nose) or speech sound device (voice sheet), to connect the caution of vibration or sound; Wherein an end of electric switch 33 is exposed at box body 31 outsides, and is connected with tension spring 22 1 ends, when braces 2 upwards spurs tension spring 22 elongations, electric switch 33 is closed, and is connected the attention device 34 on the circuit, as shown in Figure 2:

The operation of present embodiment and principle of work thereof:

When the people is sitting on the chair 1, take on the shirtfront that reclines from the braces 2 of backrest 11 back from the people right side, hang structure 21 with it and hang to lower left backrest 11 fronts, make human body have correct sitting posture to write or read a book; In case the person forwards (desk direction) tilts, braces 2 forwards spurs, tension spring 22 distortion is when human body tilts to a certain degree (approximately eyes from the desktop distance center less than 30cm), at this moment, tension spring 22 is moved by whole, pulling electric switch 33 closes circuit, and attention device 34 sends caution (sounding or vibration), make the people correct own sitting posture, to reach the effect of pre-myopia prevention.

Claims

1, the special-purpose pre-myopia prevention tables and chairs of a kind of student, comprise the have backrest chair (1) of (11), it is characterized in that: set firmly an alarm box (3) in backrest (11) back, be provided with electric switch (33) and attention device (34) in this alarm box (3), on this electric switch (33), be provided with the braces (2) that connects with tension spring (22) end, and this braces (2) other end hook (21) is hung to backrest (11) front.

2, by the special-purpose pre-myopia prevention tables and chairs of the described student of claim 1, it is characterized in that: described attention device (34) is Vib. or speech sound device.