CN220529629U

CN220529629U - Myopia-preventing chair for learning

Info

Publication number: CN220529629U
Application number: CN202322251003.XU
Authority: CN
Inventors: 于竺瓒
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-02-27
Anticipated expiration: 2033-08-21

Abstract

The utility model relates to the technical field of student learning tools, in particular to a myopia-preventing chair for learning; the seat cushion comprises a seat cushion, a backrest, supporting legs, a handle and a limiting assembly, wherein the rear end of the upper wall of the seat cushion is vertically and fixedly connected with the backrest, the four corners of the lower wall of the seat cushion are fixedly connected with the supporting legs, the left side wall and the right side wall of the backrest are both rotationally connected with the handle, and one end, far away from the backrest, of the handle is detachably connected with the seat cushion; the limiting assembly comprises a limiting plate, a telescopic rod and an arc clamping plate, one end of the limiting plate is rotationally connected with one of the handles, the other end of the limiting plate is connected with the other handle through a bolt, the upper wall of the limiting plate is vertically and fixedly connected with the telescopic rod, and one end, far away from the limiting plate, of the telescopic rod is fixedly connected with the arc clamping plate; set up the limiting plate between the handle, the limiting plate upper wall still is equipped with the arc cardboard, and accessible limiting plate, arc cardboard limit middle school student bow, low head study to make the position of sitting standard, prevent middle school student because the myopia that the position of sitting incorrectly leads to.

Description

Myopia-preventing chair for learning

Technical Field

The utility model relates to the technical field of student learning tools, in particular to a myopia-preventing chair for learning.

Background

At present, most of the day of middle school students spends in the class, and along with improper sitting postures for a long time, myopia of the middle school students can be caused, and problems such as vision damage and spinal injuries are caused.

The chair that present school provided for middle school student just is ordinary chair, including back, cushion and supporting leg, and middle school student sits on this kind of chair, and when unconscious, the health just leans forward, and eyes will be nearer to the distance of books, and middle school student's lesson is many in addition, and long-term a large amount of homework of coping with, and the time of going on, the eyesight just can decline, and present myopia recovery can only go on through the operation, and the risk is great, so improve on the chair, play myopia prevention effect and be crucial.

Therefore, there is a need to provide a chair for preventing myopia for learning, which corrects sitting postures of middle school students and prevents myopia of middle school students compared with the prior art.

Disclosure of Invention

The utility model solves the technical problems in the prior art, and provides a myopia-preventing chair for learning.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a study is with chair of myopia prevention, includes cushion, back, supporting leg, handle and spacing subassembly, the perpendicular fixed connection of cushion upper wall rear end the back, cushion lower wall four corners department fixed connection supporting leg, back left side lateral wall, right side lateral wall all rotate connect the handle, the handle keep away from back one end with the cushion detachable connection;

the limiting assembly comprises a limiting plate, a telescopic rod and an arc-shaped clamping plate, one end of the limiting plate is rotationally connected with one of the handles, the other end of the limiting plate is connected with the other handle through a bolt, the upper wall of the limiting plate is vertically and fixedly connected with the telescopic rod, and the telescopic rod is far away from the one end of the limiting plate and fixedly connected with the arc-shaped clamping plate.

Further, the handle includes left handle and right handle, left handle rotates to be connected on the left side lateral wall of back, right handle rotates to be connected on the back right side lateral wall, left handle upper wall is equipped with the spout, the inside slider that slides of spout, the slider upper wall rotates to be connected the limiting plate.

Further, a plurality of first threaded holes are formed in the side wall, far away from the right handle, of the left handle, bolts penetrate through the first threaded holes, and the bolts are in threaded connection with the sliding blocks; the upper wall of the right handle is provided with a plurality of second threaded holes, one end, far away from the sliding block, of the limiting plate is provided with a second fastening bolt in a penetrating mode, and the second fastening bolt is connected with the right handle through the second threaded holes.

Further, the number of the first threaded holes is the same as that of the second threaded holes, and the first threaded holes and the second threaded holes are arranged in a one-to-one correspondence manner.

Further, the lower wall of the left handle is rotatably connected with a first folding rod, and the first folding rod is detachably connected with the seat cushion; the lower wall of the right handle is rotatably connected with a second folding rod, and the second folding rod is detachably connected with the cushion.

Still further, the cushion is close to left handle one side lateral wall, is close to right handle one side lateral wall is all embedded to be equipped with the electro-magnet, first folding lever is close to cushion one side lateral wall is embedded to be equipped with magnet, the second folding lever is close to cushion one side lateral wall is embedded to be equipped with magnet, the left electro-magnet of cushion corresponds the setting with the magnet that first folding lever set up, the electro-magnet on cushion right side corresponds the setting with the magnet that the second folding lever set up.

Furthermore, a power supply is arranged in the cushion and connected with the electromagnet, a first button is arranged on the side wall of the backrest, and the first button controls the electrifying and the de-electrifying of the electromagnet.

Further, the supporting legs comprise two front supporting legs, two rear supporting legs and two lower supporting legs, the two front supporting legs and the two rear supporting legs are respectively and fixedly connected to four corners of the lower wall of the cushion, and the front supporting legs and the lower wall of the rear supporting legs which are positioned on the same side are fixedly connected with one lower supporting leg;

the front support leg comprises a front upper telescopic leg, a front lower telescopic leg and a first fastening bolt, wherein the front upper telescopic leg is connected with the front lower telescopic leg in a sliding manner, and the front upper telescopic leg and the front lower telescopic leg are fixed through the first fastening bolt;

the rear supporting leg comprises a rear upper telescopic leg, a rear lower telescopic leg and a fourth fastening bolt, the rear upper telescopic leg is connected with the rear lower telescopic leg in a sliding manner, and the rear upper telescopic leg and the rear lower telescopic leg are fixed through the fourth fastening bolt.

Further, a supporting plate is fixedly connected between the two lower supporting legs, the upper wall of the supporting plate is fixedly connected with an air cylinder, and the extending end of the air cylinder is fixedly connected with the lower wall of the cushion.

Further, the telescopic link includes movable rod, dead lever, third fastening bolt and spring, the dead lever is inside to slide and is connected the movable rod, the movable rod upper wall with arc cardboard is connected, the dead lever lower wall with the limiting plate is connected, the spring upper end with movable rod lower wall fixed connection, the spring lower extreme with dead lever inside lower wall fixed connection, the movable rod with the dead lever passes through third fastening bolt is fixed.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The limiting plate is arranged between the handles, the arc-shaped clamping plate is further arranged on the upper wall of the limiting plate, and middle school students can be limited to bend down and learn with low head through the limiting plate and the arc-shaped clamping plate, so that sitting postures are standard, and myopia of the middle school students caused by incorrect sitting postures is prevented.

(2) The limiting plate can slide relative to the handle, and the front supporting leg and the rear supporting leg are telescopic, so that the limiting plate is beneficial to middle school students or other users with different shapes and heights to use, and has high adaptability.

Drawings

Fig. 1 is a right side view of the overall structure of the present utility model.

Fig. 2 is a front view of the left and right handles of the present utility model in a folded state.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a front view of the left and right handles of the present utility model in an operating state.

Fig. 5 is an enlarged view at B in fig. 4.

Fig. 6 is a bottom view of the left and right handles of the present utility model.

Fig. 7 is a sectional view showing the internal structure of the telescopic rod of the present utility model.

Fig. 8 is a cross-sectional view showing the internal structure of the front support leg of the present utility model.

Reference numerals illustrate:

1. a backrest; 101. a first button; 102. a second button; 2. a cushion; 21. an electromagnet; 3. front support legs; 31. front upper telescoping legs; 32. front lower telescoping legs; 33. a first fastening bolt; 34. a first limiting block; 4. rear support legs; 5. a left handle; 51. a chute; 52. a first threaded hole; 53. a slide block; 54. a first storage tank; 55. a first folding bar; 551. a magnet; 6. a right handle; 61. a second threaded hole; 62. a second storage tank; 63. a second folding bar; 7. a lower support leg; 8. a cylinder; 9. a limiting plate; 91. a second fastening bolt; 10. a support plate; 11. an arc-shaped clamping plate; 12. a magic tape; 13. a telescopic rod; 131. a movable rod; 132. a fixed rod; 133. a third fastening bolt; 134. a spring; 135. a second limiting block; 14. a rotating lever; 15. and a rubber pad.

Detailed Description

The technical solutions of the present utility model will be clearly described below with reference to the accompanying drawings, and it is obvious that the described embodiments are not all embodiments of the present utility model, and all other embodiments obtained by a person skilled in the art without making any inventive effort are within the scope of protection of the present utility model. It should be noted that, the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1, 2, 3 and 6, the utility model provides a myopia-preventing chair for learning, which comprises a backrest 1, a cushion 2, supporting legs, handles and a limiting component, wherein the rear end of the upper wall of the cushion 2 is vertically and fixedly connected with the backrest 1, the supporting legs comprise a front supporting leg 3, a rear supporting leg 4 and a lower supporting leg 7, the front end of the lower wall of the cushion 2 is vertically and fixedly connected with two front supporting legs 3, the rear end of the lower wall of the cushion 2 is vertically and fixedly connected with two rear supporting legs 4, the two front supporting legs 3 are positioned at two corners of the front end of the lower wall of the cushion 2, the two rear supporting legs 4 are positioned at four corners of the rear end of the lower wall of the cushion 2, namely, the front supporting legs 3 and the lower walls of the rear supporting legs 4 positioned on the same side are fixedly connected with the same lower supporting leg 7, the lower supporting legs 7 are arranged in parallel with the cushion 2, and rubber pads 15 are sleeved at two ends of the lower supporting legs 7; fixedly connected with magic subsides 12 on the back supporting leg 4, the magic subsides 12 include first bonding strip and second bonding strip, and first bonding strip one end fixed connection is on the back supporting leg 4, and second bonding strip one end also fixed connection is on the back supporting leg 4, and first bonding strip other end bonds with the second bonding strip other end.

The handle comprises a left handle 5 and a right handle 6, the left side wall of the backrest 1 is rotationally connected with the left handle 5, the right side wall of the backrest 1 is rotationally connected with the right handle 6, a first storage groove 54 is formed in the side, far away from the backrest 1, of the lower wall of the left handle 5, one end, far away from the backrest 1, of the inner side wall of the first storage groove 54 is rotationally connected with a first folding rod 55, and the first folding rod 55 is perpendicular to the left handle 5 when being rotated out to a maximum angle from the inside of the first storage groove 54; the lower wall of the right handle 6 is provided with a second storage groove 62 at one side far away from the backrest 1, one end of the inner side wall of the second storage groove 62 far away from the backrest 1 is rotationally connected with a second folding rod 63, and the second folding rod 63 is perpendicular to the right handle 6 when being rotated out to the maximum angle from the inside of the second storage groove 62. One end of the limiting component is rotationally connected to the upper wall of the left handle 5, and the other end of the limiting component is detachably connected with the upper wall of the right handle 6.

A rotating rod 14 is fixedly connected between the left handle 5 and the right handle 6, the rotating rod 14 is arranged through the backrest 1, the rotating rod 14 is arranged in parallel with the seat cushion 2, and the left handle 5 and the right handle 6 synchronously rotate through the rotating rod 14.

A lower supporting leg 7 is arranged below the left handle 5, a lower supporting leg 7 is also arranged below the right handle 6, a supporting plate 10 is fixedly connected between the two lower supporting legs 7, the upper wall of the supporting plate 10 is arranged in parallel with the cushion 2, the upper wall of the supporting plate 10 is vertically and fixedly connected with an air cylinder 8, the extending end of the air cylinder 8 is fixedly connected with the lower wall of the cushion 2, a second button 102 is arranged on the side wall of the backrest 1, and the second button 102 is used for controlling the start and stop of the air cylinder 8.

As shown in fig. 2, fig. 3, fig. 4, fig. 5, the spacing subassembly includes limiting plate 9, arc cardboard 11, telescopic link 13 and slider 53, left side handle 5 upper wall is equipped with spout 51, spout 51 extends along the length direction of left side handle 5 and sets up, the slider 53 is connected in the inside slip of spout 51, slider 53 upper wall rotates and connects limiting plate 9, the intermediate position vertical fixed connection telescopic link 13 of gag lever post upper wall, telescopic link 13 keeps away from gag lever post one end fixed connection arc cardboard 11, left side handle 5 is kept away from right handle 6 one side lateral wall interval and is equipped with a plurality of first screw holes 52, the position that all corresponds spout 51 of first screw hole 52 sets up, the slider 53 is close to the position of first screw hole 52 also is equipped with the screw hole, the bolt passes arbitrary first screw hole 52 and slider 53 threaded connection, can make slider 53 fix on left side handle 5, left side handle 5 is kept away from slider 53 one end and wears to be equipped with second fastening bolt 91, second fastening bolt 91 sets up vertical left side handle 5 upper wall, right side handle 6 upper wall sets up along the length direction interval of right side handle 6, second screw hole 61 and the same with the setting up of first screw hole 52 one-to-one.

The first folding rod 55 is provided with a magnet 551 embedded in the side wall of one side close to the seat cushion 2, the electromagnet 21 is embedded in the side wall of one side close to the left handle 5 of the seat cushion 2, a power supply is arranged in the seat cushion 2 and connected with the electromagnet 21, the side wall of the backrest 1 is provided with a first button 101, and the first button 101 controls the power on and power off of the electromagnet 21; when the left handle 5 is perpendicular to the backrest 1 and the first folding rod 55 is rotated out to the maximum angle from the first storage groove 54, the magnet 551 corresponds to the position of the electromagnet 21, the first button 101 is pressed to enable the electromagnet 21 to be electrified, the electromagnet 21 attracts the magnet 551, the first folding rod 55 is fixedly connected with the seat cushion 2, so that the left handle 5 is fixedly connected with the seat cushion 2, the electromagnet 21 is embedded at one end of the seat cushion 2 close to the right handle 6, the magnet 551 is embedded at one side wall of the second folding rod 63 close to the seat cushion 2, the electromagnet 21 is connected with the magnet 551 after being electrified, the right handle 6 is fixed on the side wall of the seat cushion 2, and the first button 101 simultaneously controls the electrifying and de-electrifying conditions of the electromagnets 21 embedded at the left side and the right side of the seat cushion 2.

As shown in fig. 1 and 7, the front supporting leg 3 includes a front upper telescopic leg 31, a front lower telescopic leg 32 and a first fastening bolt 33, the front upper telescopic leg 31 is slidably connected with the front lower telescopic leg 327, the upper wall of the front upper telescopic leg 31 is fixedly connected with the lower wall of the seat cushion 2, the lower wall of the front lower telescopic leg 327 is fixedly connected with the lower supporting leg 7, the upper end of the front lower telescopic leg 327 is integrally connected with a first limiting block 34, the first limiting block 34 is used for preventing the front lower telescopic leg 327 from completely sliding out from the interior of the front upper telescopic leg 31, the lower end of the side wall of the front upper telescopic leg 31 is provided with the first fastening bolt 33 in a penetrating manner, the first fastening bolt 33 is in threaded connection with the front upper telescopic leg 31, and the first fastening bolt 33 is screwed tightly, so that the front lower telescopic leg 327 can be extruded, and the front lower telescopic leg 327 and the front upper telescopic leg 31 can be fixed. The back supporting leg 4 includes back upper telescoping leg, back lower telescoping leg and fourth fastening bolt, and back upper telescoping leg inside slides and connects back lower telescoping leg, and back lower telescoping leg upper end an organic whole is connected with the stopper, and back upper telescoping leg passes through fourth fastening bolt with back lower telescoping leg and fixes.

As shown in fig. 3 and 8, the telescopic rod 13 includes a movable rod 131 and a fixed rod 132, the inside of the fixed rod 132 is slidingly connected with the movable rod 131, the lower wall of the fixed rod 132 is fixedly connected with a limiting rod, the upper wall of the movable rod 131 is fixedly connected with the arc clamping plate 11, the lower end of the movable rod 131 is integrally connected with a second limiting block 135, the second limiting block 135 is used for preventing the movable rod 131 from completely sliding out of the inside of the fixed rod 132, the lower wall of the movable rod 131 is fixedly connected with a spring 134, the lower end of the spring 134 is fixedly connected with the lower wall of the inner wall of the fixed rod 132, a third fastening bolt 133 is penetrated through the side wall of the fixed rod 132, the third fastening bolt 133 is in threaded connection with the side wall of the fixed rod 132, the third fastening bolt 133 is always positioned at the upper end of the second limiting block 135, and the third fastening bolt 133 is screwed, so that the movable rod 131 can be prevented from sliding relative to the fixed rod 132.

The utility model provides a working principle of a myopia-preventing chair for learning, which comprises the following steps: when the chair is in use, the left handle 5 and the right handle 6 are rotated to be vertically arranged with the backrest 1, the first folding rod 55 and the second folding rod 63 are respectively rotated out to the maximum angle from the first storage groove 54 and the second storage groove 62, the first button 101 is pressed to electrify the electromagnet 21, the first folding rod 55 and the second folding rod 63 are fixed with the side wall of the seat cushion 2, the position of the sliding block 53 in the sliding groove 51 is adjusted according to the form of the chair, when the chair is adjusted to the proper position, the bolts are screwed, the sliding block 53 is fixed in the sliding groove 51, the limiting plate 9 is rotated, the second fastening bolt 91 on the limiting plate 9 is screwed into the second threaded hole 61 of the right handle 6, the limiting plate 9 is fixed, the arc clamping plate 11 is attached to the lower part of a user, the limiting plate 9 and the arc clamping plate 11 are arranged, the user can be prevented from bending down, the sitting posture of the chair is kept well, and myopia caused by the user can be prevented from sitting incorrectly for a long time. Before use, the height of the chair can be adjusted through the air cylinder 8, the first fastening bolt 33 is unscrewed, the second button 102 is pressed, the air cylinder 8 is started, when the chair is adjusted to a proper height, the second button 102 is pressed again, the movement of the air cylinder 8 is stopped, and the first fastening bolt 33 is screwed again. The chair provided by the utility model can be suitable for students in different shapes and different heights or other users.

When the chair is transported or stored, the first button 101 is pressed, the power supply of the electromagnet 21 is disconnected, the first folding rod 55 and the second folding rod 63 are respectively rotated into the first storage groove 54 and the second storage groove 62, then the bolts between the limiting plate 9 and the right handle 6 are rotated to enable the bolts to move upwards, the limiting plate 9 is rotated to a position parallel to the left handle 5, the left handle 5 is rotated to a position parallel to the backrest 1, the right handle 6 and the left handle 5 are synchronously rotated, finally the left handle 5, the limiting plate 9 and the lower support legs 7 corresponding to the left handle 5 are fixed together through the magic tape 12, and the lower support legs 7 corresponding to the right handle 6 and the right handle 6 are fixed together, so that the chair is convenient to store and transport.

Finally, it should be noted that the above description is only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and that the simple modification and equivalent substitution of the technical solution of the present utility model can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present utility model.

Claims

1. The myopia-preventing chair for learning is characterized by comprising a cushion, a backrest, supporting legs, a handle and a limiting assembly, wherein the rear end of the upper wall of the cushion is vertically and fixedly connected with the backrest, four corners of the lower wall of the cushion are fixedly connected with the supporting legs, the left side wall and the right side wall of the backrest are both rotationally connected with the handle, and one end of the handle far away from the backrest is detachably connected with the cushion;

2. The myopia prevention chair according to claim 1, wherein the handles comprise a left handle and a right handle, wherein the left handle is rotatably connected to the left side wall of the backrest, the right handle is rotatably connected to the right side wall of the backrest, the left handle upper wall is provided with a sliding groove, the sliding groove is internally slidably connected with a sliding block, and the sliding block upper wall is rotatably connected with the limiting plate.

3. The myopia prevention chair according to claim 2, wherein the side wall of the left handle far from the right handle is provided with a plurality of first threaded holes, and bolts are penetrated in the first threaded holes and are in threaded connection with the sliding blocks; the upper wall of the right handle is provided with a plurality of second threaded holes, one end, far away from the sliding block, of the limiting plate is provided with a second fastening bolt in a penetrating mode, and the second fastening bolt is connected with the right handle through the second threaded holes.

4. A chair for preventing myopia for learning according to claim 3, wherein the number of the first screw holes and the second screw holes is the same, and the first screw holes and the second screw holes are arranged in one-to-one correspondence.

5. The myopia prevention chair according to claim 2, wherein the lower wall of the left handle is rotatably connected with a first folding rod, and the first folding rod is detachably connected with the seat cushion; the lower wall of the right handle is rotatably connected with a second folding rod, and the second folding rod is detachably connected with the cushion.

6. The chair of claim 5, wherein the seat cushion is adjacent to the left side wall and the right side wall, the first folding bar is adjacent to the seat cushion side wall, the second folding bar is adjacent to the seat cushion side wall, the electromagnet on the left side of the seat cushion is arranged corresponding to the magnet arranged on the first folding bar, and the electromagnet on the right side of the seat cushion is arranged corresponding to the magnet arranged on the second folding bar.

7. The chair for preventing myopia for learning according to claim 6, wherein a power supply is arranged in the seat cushion, the power supply is connected with the electromagnet, a first button is arranged on the side wall of the backrest, and the first button controls the power-on and power-off of the electromagnet.

8. The myopia prevention chair according to claim 1, wherein the support legs comprise two front support legs, two rear support legs and two lower support legs, the two front support legs and the two rear support legs are respectively and fixedly connected to four corners of the lower wall of the seat cushion, and the front support legs and the lower walls of the rear support legs on the same side are fixedly connected with one lower support leg;

9. The chair for preventing myopia for learning according to claim 8, wherein a support plate is fixedly connected between the two lower support legs, the upper wall of the support plate is fixedly connected with a cylinder, and the extending end of the cylinder is fixedly connected with the lower wall of the cushion.

10. The chair for preventing myopia for learning according to claim 1, wherein the telescopic rod comprises a movable rod, a fixed rod, a third fastening bolt and a spring, wherein the movable rod is slidably connected inside the fixed rod, the upper wall of the movable rod is connected with the arc-shaped clamping plate, the lower wall of the fixed rod is connected with the limiting plate, the upper end of the spring is fixedly connected with the lower wall of the movable rod, the lower end of the spring is fixedly connected with the lower wall inside the fixed rod, and the movable rod is fixed with the fixed rod through the third fastening bolt.