CN112021790B

CN112021790B - Myopia prevention chair for middle school students

Info

Publication number: CN112021790B
Application number: CN202010654902.2A
Authority: CN
Inventors: 陈慷宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2022-11-29
Anticipated expiration: 2040-07-09
Also published as: CN112021790A

Abstract

The invention relates to a myopia-preventing chair for middle school students, which comprises a base, a lifting mechanism, a chair framework, a seat board body and a head infrared sensor, wherein the chair framework comprises a transverse supporting rod and a vertical back-rest rod, a back rest is assembled on the back-rest rod, the transverse supporting rod is connected with the seat board body, the seat board body comprises a supporting plate, a seat board and a balance detection device, the supporting plate is assembled on the transverse supporting rod, elastic support legs are respectively installed at four corners of the supporting plate, the seat board is assembled on the elastic support legs, and the balance detection device and the head infrared sensor are connected with a controller. The head infrared sensor faces the direction of a user, when the user leans forward or lowers the head, the infrared sensor senses the head and feeds the head back to the controller, and the controller sends a prompt; when the sitting posture is not standard, the stress and the pressure of the sitting plate are not uniform, the controller gives out a prompt and records; the multi-directional monitoring and reminding device can monitor and remind the sitting posture of the student in a multi-directional manner, and effectively prevent the myopia of the student.

Description

Myopia prevention chair for middle school students

Technical Field

The invention relates to the technical field of teaching aids, in particular to a myopia prevention chair for middle school students.

Background

At present, students have a great number of school businesses and are subjected to long-term desk-bending learning, due to the development of networks, online education is increasingly abundant, more students are at home on line and have class, the students need to face computers for a long time, the eyesight is seriously reduced, in order to prevent the students from lowering heads or leaning forward, a limiting rod is generally added on the front side of the face of the students, the use of the students is influenced, the students sit for a long time, the students can raise legs of two-man or one leg of the students is stressed, the body is inclined, the sitting posture is not standard, the spine is bent, and the healthy growth of the children is not facilitated.

Disclosure of Invention

In order to overcome the defects, the invention aims to provide a myopia prevention chair for middle school students.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a middle school student uses myopia prevention chair, includes base, elevating system, seat skeleton, bedplate body, head infrared inductor, be in the same place through elevating system and seat skeleton fixed connection on the base, the seat skeleton is established to the L type, including horizontal bracing piece, vertical back pole, be equipped with the back on the back pole, link to each other with the bedplate body on the horizontal bracing piece, the bedplate body includes backup pad, seat, balanced detection device, the backup pad assembly is on horizontal bracing piece, and the elasticity stabilizer blade is installed respectively in the four corners of backup pad, and the elasticity stabilizer blade adopts spring or elasticity rubber post etc. and is equipped with the seat on the elasticity stabilizer blade, balanced detection device, head infrared inductor are connected with the controller, head infrared inductor is through establishing second horizontal pole one end, and the second horizontal pole assembles on first horizontal pole through the damping pivot, and first horizontal pole assembles on the back through the damping pivot, first horizontal pole, second horizontal pole adopt the telescopic link, and the controller is connected with the reminiscences.

Specifically, the balance detection device adopts a pressure sensor, and each elastic supporting leg is provided with the pressure sensor.

Specifically, the balance detection device adopts a bubble level meter which is assembled on the lower surface of the seat plate.

Specifically, the cladding has the cushion on the seat, and the cushion top is equipped with the recess, and the cushion is kept away from one side symmetry of back and is equipped with the recess, with thigh position looks adaptation.

Specifically, the back includes two back units of mutual symmetry, and the back unit is fixed in the both sides of slider through the elastic connection knee respectively, the slider assembly is on the back pole, and the outside of back pole is equipped with one row of spacing tooth's socket, and the groove opening of spacing tooth's socket is the upwards direction to one side, the inside of slider is fixed and is equipped with the installation axle, and the connecting rod cup joints at installation epaxially, can rotate around the installation axle, and the upper end of connecting rod is equipped with spacing hook, is equipped with first torsional spring between installation axle and the connecting rod, and the precompression of first torsional spring makes the connecting rod extrude to spacing tooth's socket direction, the outside of connecting rod is equipped with the control and draws the handle, and the control draws the through-hole that passes the slider to expose outside the slider, and under no exogenic action, spacing hook and spacing tooth's socket cooperation are in the same place together

Specifically, the base is provided with a pedal mechanism, the pedal mechanism comprises two pedal plates arranged side by side, one side of each pedal plate is provided with a rotating shaft, the rotating shafts are assembled on the base through bearings, a second torsion spring is assembled between each rotating shaft and the base, the end of each rotating shaft is fixedly connected with the detection end of the torque measurer, and the connection end of each torque measurer is fixed on the base.

Specifically, an infrared sensor is arranged on the pedal plate and connected with the controller.

The invention has the following beneficial effects: the head infrared sensor faces the direction of the user, when the user leans forwards or lowers the head, the infrared sensor feeds back the head to the controller after sensing, and the controller sends out a prompt; when the sitting posture is not standard, the stress and the pressure of the sitting plate are not uniform, the controller gives out a prompt and records; the multi-directional monitoring and reminding device can monitor and remind the sitting posture of the student in a multi-directional manner, and effectively prevent the myopia of the student.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic view of a chair back structure according to embodiment 1 of the present invention.

Fig. 3 is a schematic view of a connection structure of a seat back and a back bar according to embodiment 1 of the present invention.

Fig. 4 is a schematic structural view of a support plate according to embodiment 1 of the present invention.

Fig. 5 is a schematic structural diagram of embodiment 2 of the present invention.

Fig. 6 is a schematic structural view of a footrest in embodiment 2 of the present invention.

Fig. 7 is a schematic structural view of a rotating shaft end portion in embodiment 2 of the present invention.

In the figure, 1 a base, 2 a lifting mechanism, 3 backrest rods, 301 limiting tooth grooves, 4 backrest units, 401 elastic connection bent rods, 402 sliding blocks, 403 control pull handles, 404 connecting rods, 405 installation shafts, 406 limiting hooks, 407 first torsion springs, 5 supporting plates, 6 seat plates, 7 seat cushions, 8 head infrared sensors, 801 first cross rods, 802 second cross rods, 9 foot pedals, 901 rotating shafts, 902 torsion springs, 903 torque measuring devices, 904 connection ends and 10 foot infrared sensors are arranged.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 4, the myopia prevention chair for middle school students comprises a base 1, a lifting mechanism 2, a seat framework, a seat plate body and a head infrared sensor 8, wherein the base 1 is fixedly connected with the seat framework through the lifting mechanism 2, the seat framework is set to be of an L shape and comprises a transverse support rod (not shown in the figure) and a vertical back rod 3, a backrest is assembled on the back rod 3, the transverse support rod is connected with the seat plate body, the seat plate body comprises a support plate, a seat plate and a balance detection device, the support plate is assembled on the transverse support rod, elastic support legs 501 are respectively installed at four corners of the support plate 5, the elastic support legs 501 adopt springs or elastic rubber columns and the like, a seat plate 6 is assembled on the elastic support legs 501, the balance detection device and the head infrared sensor 8 are connected with a controller, the head infrared sensor 8 is arranged at one end of a second cross rod 802, the second cross rod 801 is assembled on a first cross rod 801 through a damping rotating shaft, the first cross rod is assembled on the backrest 801 through a damping vibrator, the first cross rod and the second cross rod adopt a reminder 802, the reminder is connected with a reminder lamp or a telescopic rod or a warning lamp.

Specifically, the balance detection device adopts a pressure sensor 502, each elastic support leg 501 is provided with the pressure sensor 502, when a user sits in an irregular posture, the stress pressure of the sitting plate 6 is uneven, the pressure sensors 502 at the four corners can transmit to the controller, and the controller sends out a prompt and records the prompt.

Specifically, balanced detection device adopts the bubble spirit level, and the assembly of bubble spirit level is at the lower surface of seat, and when 6 atress pressures were inhomogeneous of seat, seat 6 can incline, and the bubble spirit level passes the controller with the signal of telecommunication, when exceeding the threshold value of settlement, when detecting disequilibrium, the controller sent the warning.

Specifically, seat 6 is gone up the cladding and is had cushion 7, and cushion 7 top is equipped with the recess, and the cushion is kept away from one side symmetry of back and is equipped with the recess, with thigh position looks adaptation.

Specifically, the backrest comprises two backrest units 4 which are symmetrical to each other, the backrest units 4 are respectively fixed on two sides of a sliding block 402 through elastic connecting bent rods 401, the sliding block 402 is assembled on the backrest rod 3, a row of limiting tooth grooves 301 are formed in the outer side of the backrest rod 3, the groove openings of the limiting tooth grooves 301 are in an inclined upward direction, an installation shaft 405 is fixedly arranged inside the sliding block 402, a connecting rod 404 is sleeved on the installation shaft 405 and can rotate around the installation shaft 405, a limiting hook 406 is arranged at the upper end of the connecting rod 404, a first torsion spring 407 is arranged between the installation shaft 405 and the connecting rod 404, the connecting rod 404 is pressed towards the limiting tooth grooves 301 by the pre-pressure of the first torsion spring, a control pull handle 403 is arranged outside the connecting rod 404, the control pull handle 403 passes through a through hole of the sliding block 402 and is exposed outside the sliding block 402, the limiting hook 406 and the limiting tooth grooves 401 are matched together under the absence of external force, so that the sliding block 402 is fixed in a fixed position, when the position of the backrest needs to be adjusted, the control pull handle 403 is pulled outwards, the connecting rod 404 overcomes the elastic force of the limiting hook 406, the limiting hook 301 is pulled upwards or downwards, and is adjusted to be fixed in a proper position, and then the backrest is released correspondingly.

Example 2

As shown in fig. 5, 6, and 7, in the myopia prevention chair for middle school students, the base in embodiment 1 is provided with a pedal mechanism, the pedal mechanism includes two foot pedals 9 arranged side by side, one side of each of the foot pedals 9 is provided with a rotating shaft 901, the rotating shaft 901 is assembled on the base 1 through a bearing, a second torsion spring 902 is assembled between the rotating shaft 901 and the base 1, an end of the rotating shaft 901 is fixedly connected with a detection end of a torque measurer 903, and a connection end 904 of the torque measurer 903 is fixed on the base 1 for measuring the torque of the foot pedals 9, and determining whether the forces applied to the two foot pedals 9 are consistent, if not, the forces applied to the two legs are not uniform, and the sitting posture is not correct.

Specifically, an infrared sensor 10 is disposed on the pedal plate 9 for detecting whether a foot is placed on the pedal plate 9.

The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention, which is similar or similar to the technical solutions of the present invention.

The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims

1. The utility model provides a middle school student are with myopia prevention chair, includes base, elevating system, seat skeleton, bedplate body, be in the same place through elevating system and seat skeleton fixed connection on the base, the seat skeleton is established to the L type, including horizontal bracing piece, vertical back pole, be equipped with back, its characterized in that on the back pole: the seat board body comprises a supporting plate, a seat board and a balance detection device, the supporting plate is assembled on the transverse supporting rod, elastic supporting legs are respectively installed at four corners of the supporting plate, the seat board is assembled on the elastic supporting legs, the balance detection device and the head infrared sensor are connected with a controller, the head infrared sensor is arranged at one end of a second cross rod, the second cross rod is assembled on a first cross rod through a damping rotating shaft, the first cross rod is assembled on a backrest through the damping rotating shaft, and the controller is connected with a reminder;

the base is provided with a pedal mechanism, the pedal mechanism comprises two pedal plates arranged side by side, one side of each pedal plate is provided with a rotating shaft, the rotating shafts are assembled on the base through bearings, a second torsion spring is assembled between each rotating shaft and the base, the end of each rotating shaft is fixedly connected with the detection end of the torque measurer, and the connection end of each torque measurer is fixed on the base.

2. The myopia prevention chair for middle school students according to claim 1, wherein: the balance detection device adopts a pressure sensor, and each elastic supporting leg is provided with the pressure sensor.

3. The myopia prevention chair for middle school students according to claim 1, wherein: the balance detection device adopts a bubble level meter which is assembled on the lower surface of the seat plate.

4. The myopia prevention chair for middle school students according to claim 1, wherein: the seat plate is coated with a seat cushion, a groove is formed in the upper portion of the seat cushion, and grooves are symmetrically formed in one side, away from the backrest, of the seat cushion and are matched with the positions of thighs.

5. The myopia prevention chair for middle school students according to claim 1, wherein: the back includes two back units of mutual symmetry, and the back unit is fixed in the both sides of slider through the elastic connection knee respectively, the slider assembly is on the back pole, and the outside of back pole is equipped with one row of spacing tooth's socket, and the groove opening of spacing tooth's socket is the oblique direction of going up, the inside of slider is fixed and is equipped with the installation axle, and the connecting rod cup joints at installation epaxial, can rotate around the installation axle, and the upper end of connecting rod is equipped with spacing hook, is equipped with first torsional spring between installation axle and the connecting rod, and the precompression of first torsional spring makes the connecting rod extrude to spacing tooth's socket direction, the outside of connecting rod is equipped with the control and draws the handle, and the control draws the through-hole that passes the slider to expose at the slider outside, and under no exogenic action, spacing hook and spacing tooth's socket fit together.

6. The myopia prevention chair for middle school students according to claim 1, wherein: an infrared sensor is arranged on the pedal and connected with the controller.