CN214103699U

CN214103699U - Concealed myopia-preventing sitting posture corrector

Info

Publication number: CN214103699U
Application number: CN202021788641.5U
Authority: CN
Inventors: 史叶挺
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-09-03
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a hidden myopia prevention position of sitting unscrambler installs on the desk, and this hidden myopia prevention position of sitting unscrambler is including upset chin bracket and bed plate, and upset chin bracket articulates on the bed plate, and the bed plate is connected on the desk bottom surface. The turnover chin rest can rotate, and can be switched between a standing state and a laying state, and when the turnover chin rest is not used, the turnover chin rest can be laid down and folded, so that the whole turnover chin rest is placed along the outer edge of the bottom surface of the table or further rotated to be hidden under the table top. The utility model discloses can force the student to keep the correct position of sitting all the time during student's reading, writing, avoid student's eyes too near books, prevent excessively using eyes, effectively prevent myopia. The hidden myopia-preventing sitting posture corrector is connected with the table into a whole, the table is used as a carrying body, the table is used as a storage body, flexible conversion can be carried out according to needs, frequent disassembly and assembly on the table are avoided, the desk is not easy to lose, and great convenience is brought to use.

Description

Concealed myopia-preventing sitting posture corrector

Technical Field

The utility model relates to an eye protection article for students, in particular to a hidden myopia-preventing sitting posture corrector.

Background

The study pressure of students in China is large, the students are forced to use eyes for a long time by heavy classroom burden, so that the poor eyesight rate of the students in all ages is high, the students have an increasing trend every year, and the physical and mental health of the teenagers is seriously influenced. The cause of eye fatigue is closely related to the lighting condition and the eye habit. Many teenagers have incorrect sitting postures when reading and writing, so that the eyes are too close to the books, and the crystalline lens of the eyeball is tightened and focused for a long time to cause fatigue. Therefore, myopia prevention brackets which can force students to keep correct sitting postures are introduced in the market, but the structural design of the products in the market still has some defects, so that the products are inconvenient to use, and many teenagers are suspected to be troublesome to mount or easy to lose after being used for a period of time and finally are abandoned. The invention with publication number CN104905592A discloses a novel portable myopia-preventing adjustable ruler bracket in 2015, 9, 16, which comprises a wedge-shaped clamping, fixing and locking device, a height-adjustable bracket with a ruler and a supporting platform. The wedge-shaped clamping fixing and locking device can fix the bracket on a table top, and then the height-adjustable support with the ruler is adjusted to the optimal height according to different sitting postures of people. The locking high pin on the height-adjustable bracket with the scale is locked, and the support platform plays a role in positioning the chin of a person. In addition, the two sides of the support table are provided with light intensity alarms, and when the light is weak or strong, the light intensity alarms alarm to prompt a person to adjust the light at the moment, and then the person is suitable for reading continuously. Meanwhile, the bracket is provided with a timer, and two sounds are made every 45 minutes to prompt a person to have a rest, so that the eye fatigue is prevented. The invention has the functions of adjusting the sitting posture of a reader, correcting the distance between the reader and a reading material, giving an alarm by strong and weak light and prompting a user to have a rest at regular time. The coordination of the functions can effectively prevent the eyes of people from suffering from myopia during reading. However, the wedge-shaped clamping, fixing and locking device is fixed on a table top, cannot be stored and hidden in the table, and can be a great obstacle when not learning.

SUMMERY OF THE UTILITY MODEL

The hidden myopia-preventing sitting posture corrector in the prior art is usually of a detachable structure, needs to be fixed on a desk through a fixing device, is inconvenient to install, is easy to lose, influences the utilization rate, and overcomes the defect.

The technical scheme of the utility model is that: the hidden myopia preventing sitting posture corrector is installed on a desk and comprises a turnover chin bracket and a base plate, wherein the turnover chin bracket is hinged on the base plate, and the base plate is connected to the bottom surface of the desk. The turnover chin rest can rotate, and can be switched between a standing state and a laying state, when the turnover chin rest is not used, the turnover chin rest can be laid down and folded, so that the whole turnover chin rest is placed along the outer edge of the bottom surface of the table or further rotated to be hidden under the table top, a wider table top is provided, and the table can be conveniently used for other purposes; when the novel student's sitting posture correcting device is used, the turnover chin bracket is pulled out and unfolded to stand up, the turnover chin bracket supports the chin of a student at the moment, the student is prevented from lowering too much, the eyes are prevented from being too close to books, the student is forced to keep a correct sitting posture, and the myopia preventing effect is achieved. The hidden myopia-preventing sitting posture corrector is connected with a table into a whole, the table is used as a supporting body, the table is used as a storage body, flexible conversion can be carried out according to needs, the table is prevented from being special, the table is enabled to be multipurpose, frequent disassembly and assembly on the table are avoided, the desk is not easy to lose, and the use is greatly facilitated.

Preferably, the turnover chin rest is of a telescopic structure and can keep a telescopic rear state, the turnover chin rest comprises a track rod and a sliding rod, the track rod is hinged to the base plate, and the sliding rod is connected to the track rod in a sliding mode. The sliding rod can be pulled out or retracted, the length of the turnover chin rest is changed, and therefore adaptability adjustment is conducted according to the height of a user, and the use is more comfortable.

Preferably, the track rod is provided with a sliding groove, the sliding rod is embedded in the sliding groove in a sliding mode, the sliding rod is in threaded connection with a locking screw, and the locking screw vertically penetrates through the sliding rod and can touch the bottom of the sliding groove. When the locking screw is screwed tightly, the tail end of the locking screw abuts against the bottom of the sliding groove, the sliding rod is pressed tightly by the reaction force of the bottom of the sliding groove, the sliding rod is locked by the friction force between the track rod and the sliding rod, and the adjusted length of the turning chin bracket is fixed. When the locking screw is loosened, the pressure of the tail end of the locking screw on the bottom of the sliding groove disappears, and the friction force between the track rod and the sliding rod is greatly reduced, so that the locking of the sliding rod is released.

As an alternative, a sliding groove is formed in the rail rod, the sliding rod is embedded in the sliding groove in a sliding mode, an elastic positioning pin is arranged on the rail rod, the elastic positioning pin penetrates through the outer wall of the rail rod in a sliding mode and enters the sliding groove, and a positioning hole which can be aligned and inserted by the elastic positioning pin is formed in the sliding rod. Set up a plurality of locating holes, when the elastic locating pin inserted different locating holes, the slide bar was locked on different positions, realized the length change of upset chin bracket. When the elastic positioning pin is pulled outwards, the elastic positioning pin moves out of the positioning hole, the locking of the sliding rod is released, and sliding is recovered.

Alternatively, the track rod is provided with a sliding groove, the sliding rod is embedded in the sliding groove in a sliding mode, a bayonet communicated with the inside of the sliding groove is arranged on the side face of the track rod, and an elastic check sheet with a clamping angle is arranged on the side face of the sliding rod and can be clamped with the bayonet. The elastic check sheet always has an outward springing trend, and when the elastic check sheet does not meet a bayonet, the elastic check sheet is restrained by the groove wall of the sliding groove and cannot be popped out, so that the sliding of the sliding rod in the sliding groove is not influenced; when the elastic non-return sheet reaches the position of the bayonet, the lateral restraint borne by the elastic non-return sheet disappears, the elastic non-return sheet is ejected outwards and is exposed out of the bayonet, and at the moment, the sliding rod cannot retract because the elastic non-return sheet is clamped with the bayonet, so the sliding rod can stay at the position of the bayonet, and the extension length of the sliding rod is determined. If the extension length of the sliding rod needs to be adjusted, the sliding rod is slid, and the elastic non-return sheet is stopped at the bayonet position.

Preferably, a torsion spring is arranged between the turnover chin rest and the base plate. The turning chin bracket can be automatically turned by selecting the torsional spring with proper force, and the turning chin bracket automatically stands after being moved out from the bottom surface of the desk, so that the desk is convenient and practical.

Preferably, a turnover limiting structure is arranged between the turnover chin rest and the base plate. The overturning limiting structure ensures that the overturning chin bracket cannot be overturned continuously after being erected, thereby generating enough supporting force.

Preferably, the sliding bar has a T-shaped structure or a rectangular frame structure. The sliding rod is made into a T shape, so that the structure is simpler, and the material is saved in the manufacturing process; the structure is more stable and the bearing capacity is stronger.

Preferably, the base plate is rotatably connected with a connecting seat, the connecting seat is fixed on the bottom surface of the table, the base plate can rotate in a plane parallel to the bottom surface of the table, and the chest stop lever is fixedly arranged on the base plate. Through the connecting seat, the base plate can rotate on the bottom surface of the table, and the turnover chin bracket and the chest stop lever can rotate to the bottom surface of the table along with the base plate to be hidden. When the chest stop lever is pulled out of the lower part of the table top, the chest stop lever forms separation between the chest of a user and the edge of the table top, so that the user is prevented from being too close to the edge of the table, and the user is forced to keep a straight and upright sitting posture.

Alternatively, the bed plate is fixed on the bottom of the table, on which a chest bar is hinged that can be turned over to the bottom of the table. The chest stop lever can be rotated to the bottom surface of the desk to be hidden. When the chest stop lever is pulled out of the lower part of the table top, the chest stop lever forms separation between the chest of a user and the edge of the table top plate, so that the user is prevented from being too close to the edge of the table, and the user is forced to keep a straight and upright sitting posture.

The utility model has the advantages that:

effectively prevent myopia. The utility model discloses can force the student to keep the correct position of sitting all the time during student's reading, writing, avoid student's eyes too near books, prevent excessively using eyes, effectively prevent myopia.

Is convenient for use and storage. The hidden myopia-preventing sitting posture corrector is connected with a table into a whole, takes the table as a carrying body and also takes the table as a storage body, can be flexibly converted according to needs, is free from being frequently assembled and disassembled on the table, is not easy to lose, and is greatly convenient to use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the present invention when it is stored under the bottom of a desk;

fig. 3 is a schematic view of a usage state of the present invention;

fig. 4 is another schematic structural diagram of the present invention;

fig. 5 is a schematic structural view of the present invention in embodiment 3;

fig. 6 is a schematic structural view of the present invention in embodiment 5.

In the figure, 1-overturn chin rest, 2-base plate, 3-track rod, 4-sliding rod, 5-locking screw, 6-elastic positioning pin, 7-positioning hole, 8-torsion spring, 9-connecting seat, 10-elastic non-return sheet, 11-chest stop rod, 12-table, 13-sliding groove and 14-bayonet.

Detailed Description

The present invention will be further described with reference to the following detailed description of the embodiments.

Example 1:

as shown in fig. 1 to 3, the hidden myopia-preventing sitting posture corrector is installed on a table 12, and comprises a turning chin bracket 1 and a base plate 2, wherein the turning chin bracket 1 is hinged on the base plate 2, the base plate 2 is connected on the bottom surface of the table, the base plate 2 is rotatably connected with a connecting seat 9 in a shape like a Chinese character ji through a pin shaft, the connecting seat 9 is fixed on the bottom surface of the table through a screw, and the base plate 2 can rotate in a horizontal plane and is parallel to the bottom surface of the table. Upset chin bracket 1 is extending structure and can keep flexible back state, and upset chin bracket 1 includes track pole 3 and slide bar 4, and track pole 3 articulates on bed plate 2, and slide bar 4 sliding connection is on track pole 3. The track rod 3 is provided with a sliding chute 13, the sliding chute 13 is a T-shaped groove, the sliding rod 4 comprises a main rod body and a sliding core made of nylon, the cross section of the sliding core is also T-shaped, the main rod body is fixed on the sliding core, so that the sliding rod 4 is embedded in the sliding chute 13 in a sliding manner, the sliding core of the sliding rod 4 is in threaded connection with a locking screw 5, and the locking screw 5 vertically penetrates through the sliding core of the sliding rod 4 and can touch the bottom of the sliding chute 13. A torsion spring 8 is arranged between the turnover chin bracket 1 and the base plate 2. An overturning limiting structure is arranged between the overturning chin bracket 1 and the base plate 2 and comprises a bottom end plate, the rear end of the bottom end plate is welded at the bottom end of the track rod 3, so that the bottom end plate and the track rod 3 form an L shape, and the front end of the bottom end plate is connected to the base plate 2 through a hinge. The turning chin bracket 1 is of a T-shaped structure as a whole, and a cross rod is fixed at the top end of the sliding rod 4. The base plate 2 is integrally provided with a T-shaped chest stop lever 11.

When the hidden myopia-preventing sitting posture corrector is not used, the turnover chin bracket 1 can be laid down and folded to be attached to the base plate 2, then the turnover chin bracket 1 is rotated in the horizontal plane, so that the turnover chin bracket 1 and the base plate 2 rotate together for at least 90 degrees, and the turnover chin bracket 1 is hidden under the bottom surface of the desk 12, thereby providing a wider desktop and being convenient for the desk to be used for other purposes; when the hidden myopia-preventing sitting posture corrector needs to be used, the bottom surface of the desk 12 of the turnover chin bracket 1 is pulled out downwards and unfolded to be upright, the chest stop lever 11 is also rotated out from the bottom surface of the desk 12 along with the turnover chin bracket 1, the turnover chin bracket 1 can support the chin of a student, the student is prevented from lowering too much, the eyes are prevented from being too close to books, the chest stop lever 11 supports the chest of the student, the chest of the student is kept at a fist distance with the desk edge, the student is forced to keep the correct sitting posture, and the myopia-preventing effect is achieved. The length of the overturning chin bracket 1 can be adjusted according to needs, when the locking screw 5 is loosened, the tail end of the locking screw 5 has no pressure on the bottom of the sliding groove, the friction force between the track rod 3 and the sliding rod 4 is small, and the sliding rod 4 is in a non-locking state and can freely slide, so that the position of the sliding rod 4 on the track rod 3 is changed, and the length adjustment of the overturning chin bracket 1 is realized; then, the locking screw 5 is screwed, the tail end of the locking screw 5 abuts against the bottom of the sliding groove 13, the reaction force of the bottom of the sliding groove 13 enables the sliding rod 4 to press the top of the sliding groove, the sliding rod is locked through the friction force between the track rod 3 and the sliding rod 4, and the adjusted length of the turnover chin bracket 1 is fixed.

Example 2:

as shown in fig. 4, the track rod 3 is provided with a sliding slot, the cross section of the sliding slot is rectangular and has four slot walls, the sliding rod 4 is embedded in the sliding slot in a sliding manner, the side surface of the track rod 3 is provided with four bayonets 14 leading to the inside of the sliding slot, the side surface of the sliding rod 4 is provided with an elastic non-return sheet 10 with a clamping angle, the elastic non-return sheet 10 is hinged on the sliding rod 4, and a V-shaped spring sheet is arranged between the elastic non-return sheet 10 and the sliding rod 4. One side of the elastic non-return sheet 10 facing the pulling-out direction is provided with a bevel edge, one side of the elastic non-return sheet 10 facing the retraction direction is provided with a straight edge which can be clamped with the bayonet 14, and the bevel edge and the straight edge form the clamping angle. A pair of pivot aerial plates is fixed at the rear end of the base plate 2, a pair of ear seat plates is fixed on two sides of the bottom end of the track rod 3, the ear seat plates are located on the outer sides of the pivot aerial plates, the track rod 3 and the base plate 2 are hinged through a pivot which penetrates through all the pivot aerial plates and the ear seat plates, and the torsion spring 8 is sleeved on the pivot. The overturning limiting structure is a limiting plane positioned at the top of the pivot overhead plate, and when the track rod 3 is erected, the bottom end face of the track rod 3 is attached to the limiting plane, so that the track rod 3 is prevented from overturning by more than 90 degrees. The rest is the same as example 1.

If the extension length of the sliding rod 4 needs to be adjusted, the sliding rod 4 is pulled outwards, so that the elastic backstop 10 stays at the proper position of the bayonet 14. At the position of the bayonet 14, the lateral restraint borne by the elastic non-return sheet 1 disappears, the elastic non-return sheet is ejected outwards and is exposed out of the bayonet 14, at the moment, the flat straight edge of the elastic non-return sheet 10 is clamped with the inner edge of the bayonet 14, and the sliding rod 4 cannot retract, so that the elastic non-return sheet can stay at the position of the bayonet 14 to determine the extending length of the sliding rod 4. If the sliding rod 4 needs to be retracted, the elastic backstop 10 can be pushed and retracted into the bayonet 14, and the clamping between the flat edge of the elastic backstop 10 and the bayonet 14 is released. If the sliding rod 4 is continuously drawn outwards, the inclined edge of the elastic check sheet 10 is pushed by the inner edge of the bayonet 14, so that the elastic check sheet 10 is folded, and the outward drawing of the sliding rod 4 is not influenced.

Example 3:

as shown in fig. 5, a sliding groove is formed on the track rod 3, the sliding rod 4 is slidably embedded in the sliding groove, an elastic positioning pin 6 is arranged on the track rod 3, the elastic positioning pin 6 vertically slides through the outer wall of the track rod 3 and enters the sliding groove, and a positioning hole 7 which can be inserted by the elastic positioning pin 6 in a contraposition manner is formed in the sliding rod 4. The base plate 2 is fixed on the bottom surface of the table, and a chest stop lever 11 which can be turned to the bottom of the table in the horizontal plane is hinged on the base plate 2. The track rod 3 is connected with the outer end of the base plate 2, and the chest stop lever 11 is connected with the bottom surface of the base plate 2 through damping hinges. The sliding rod 4 is T-shaped and comprises a straight rod and a cross rod, and the cross rod is hinged to the free end of the main rod body through a pin shaft. Crossbar chest bars 11 are also T-shaped. The rest is the same as example 1.

The sliding bar 4 can only be turned in a vertical plane parallel to the table edge. When the hidden myopia-preventing sitting posture corrector is not used, the cross rod of the sliding rod 4 is rotated by 90 degrees, the straight rod and the cross rod are gathered into a line, the turnover chin rest 1 is integrally rotated and laid down to be parallel to the bottom surface of the desk and stay below the desk edge, and the cross rod chest stop lever 11 is also rotated to the bottom surface of the desk 12 in the horizontal plane, so that the influence on the use of the desk is avoided. When the hidden myopia-preventing sitting posture corrector needs to be used, the turnover chin bracket 1 is turned over vertically, the cross rod of the sliding rod 4 is also rotated by 90 degrees and unfolded to be horizontal, and the chest stop rod 11 of the cross rod is turned outwards. Adjust the height of slide bar 4 as required, when elastic locating pin 6 inserted different locating holes 7, slide bar 4 was locked on different positions, realized the length change of upset chin rest 1. When the elastic positioning pin 6 is pulled outwards, the elastic positioning pin 6 moves out of the positioning hole 7, the locking of the sliding rod 4 is released, and sliding is recovered.

Example 4:

the turning chin rest 1 has a rectangular frame structure and is composed of a pair of rail bars 3, a pair of slide bars 4, and a crosspiece bar connected between the two slide bars 4. The rest is the same as example 1.

Example 5:

the base plate 2 is not provided with a chest bar 11 as shown in fig. 6. The rest is the same as example 1.

Example 6:

the sliding groove on the track rod 3 is a dovetail groove. The rest is the same as example 1.

Claims

1. Hidden myopia prevention position of sitting unscrambler, install on the desk, characterized by is including upset chin bracket (1) and bed plate (2), upset chin bracket (1) articulates on bed plate (2), bed plate (2) are connected on the desk bottom surface, upset chin bracket (1) is extending structure and can keep flexible back state, upset chin bracket (1) includes track pole (3) and slide bar (4), track pole (3) articulate on bed plate (2), slide bar (4) sliding connection is on track pole (3).

2. The hidden myopia-preventing sitting posture corrector as claimed in claim 1, wherein the track rod (3) is provided with a sliding groove, the sliding rod (4) is slidably embedded in the sliding groove, the sliding rod (4) is in threaded connection with a locking screw (5), and the locking screw (5) vertically penetrates through the sliding rod (4) and can touch the bottom of the sliding groove.

3. The hidden myopia-preventing sitting posture corrector as claimed in claim 1, wherein the rail rod (3) is provided with a sliding groove, the sliding rod (4) is slidably embedded in the sliding groove, the rail rod (3) is provided with an elastic positioning pin (6), the elastic positioning pin (6) slidably penetrates through the outer wall of the rail rod (3) and enters the sliding groove, and the sliding rod (4) is provided with a positioning hole (7) into which the elastic positioning pin (6) can be inserted in an aligned manner.

4. The concealed myopia-preventing sitting posture corrector according to claim 1, wherein the rail rod (3) is provided with a sliding groove, the sliding rod (4) is slidably embedded in the sliding groove, a bayonet (14) communicated with the inside of the sliding groove is arranged on the side surface of the rail rod (3), an elastic non-return sheet (10) with a bayonet angle is arranged on the side surface of the sliding rod (4), and the elastic non-return sheet (10) can be clamped with the bayonet (14).

5. The hidden myopia-preventing sitting posture corrector as claimed in claim 1, wherein a torsion spring (8) is provided between the turning chin bracket (1) and the base plate (2).

6. The hidden myopia-preventing sitting posture corrector as claimed in claim 1, wherein a turn-over limit structure is provided between the turn-over chin rest (1) and the base plate (2).

7. The concealed myopia-preventing posture corrector of claim 1, wherein the slide bar (4) has a T-shaped configuration or a rectangular frame configuration.

8. The hidden myopia-preventing sitting posture corrector as claimed in any one of claims 1 to 7, wherein the base plate (2) is rotatably connected with the connecting base (9), the connecting base (9) is fixed on the bottom surface of the table, the base plate (2) can rotate in a plane parallel to the bottom surface of the table, and the chest stop lever (11) is fixed on the base plate (2).

9. The concealed myopia-preventing sitting posture corrector according to any one of claims 1 to 7, wherein the base plate (2) is fixed to the bottom surface of the table, and the base plate (2) is hinged with a chest stop lever (11) which can be turned over to the bottom of the table.