CN221830213U - Anti-myopia device for desk - Google Patents

Abstract

The utility model discloses a myopia prevention device for a desk, comprising a posture distance adjustment part for limiting the distance between the user's head and the desk, and a book adjustment part for adjusting the tilt state of a book. The posture distance adjustment part limits the distance between the user's head and the desk, ensuring that the distance between the student's eyes and the desk is not too short. At the same time, the book adjustment part that cooperates with the posture distance adjustment part adjusts the tilt state of the book, ensuring that the student is in a frontal view state when observing the book with his eyes.

Description

Anti-myopia device for desk

Technical Field

The utility model relates to the technical field of desks and chairs for students, in particular to a myopia prevention device for desks.

Background Art

In recent years, the myopia rate among students in my country's schools has increased year by year. According to relevant reports, the degree of myopia among students is becoming younger, and primary and junior high school students in some areas have become the hardest hit by myopia.

The main reasons for students' myopia are: first, students' eyes are too close to the desk, which makes the distance between students' eyes and books too short; second, students' perspective when observing books. When students' perspective is very large or very small, students will unconsciously get close to the desk and books, which makes the distance between students' eyes and books too short. For this reason, over the years, the incidence of students' myopia has increased significantly.

Therefore, there is an urgent need for a myopia prevention device that can be used in conjunction with a desk.

Utility Model Content

In view of the above problems, the utility model provides a desk anti-myopia device for adjusting the distance between students' eyes and books and adjusting the normal viewing angle when students observe books with their eyes.

The technical solution of the utility model is: a myopia prevention device for a desk, comprising a posture distance adjustment part for limiting the distance between a user's head and the desk, and a book adjustment part for adjusting the tilt state of a book.

The working principle of the above technical solution is as follows:

The posture distance adjustment part limits the distance between the user's head and the desk, ensuring that the distance between the student's eyes and the desk is not too short. At the same time, the book adjustment part that cooperates with the posture distance adjustment part adjusts the inclination of the book, ensuring that the student is in a straight-on perspective when observing the book with his eyes (similar to the direction of the front view of the book in drawing, the same below).

In a further technical solution, the posture distance adjustment part is mainly composed of a resisting column and a cushion, the bottom of the resisting column is detachably connected to the edge of the desk on the user's side, and the cushion is arranged on the resisting column close to the user's side. Through the coordinated design of the resisting column and the cushion, after the user sits on the stool next to the desk, it can directly prevent the user's body from tilting excessively toward the desk, and indirectly limit the user's head from tilting excessively toward the desk, or even fit on the desk, thereby ensuring that the distance between the student's eyes and the desk is not too short.

In a further technical solution, the book adjustment part is located on the rear side of the entire posture distance adjustment part, and is mainly composed of a learning platform and a viewing angle adjustment plate. A guide structure that slides up and down in the vertical direction is formed between the learning platform and the resisting column; a lifting structure is arranged between the bottom surface of the learning platform and the top surface of the desk; the upper surface of the learning platform is divided into a tool placement area and a book placement area along the direction from front to back of the desk, and the book placement area has a storage space with a top opening for users to store learning items; the viewing angle adjustment plate is located on the top opening of the storage space, and the edge of the viewing angle adjustment plate close to one side of the resisting column is hingedly connected to the corresponding edge of the top opening of the storage space, and a support adjustment structure for adjusting the inclination angle of the viewing angle adjustment plate is arranged between the viewing angle adjustment plate and the learning platform. Through the coordinated design of the learning platform and the viewing angle adjustment board, on the one hand, the design of the viewing angle adjustment board facilitates the adjustment of the inclination state of the book, ensuring that students are in a normal viewing angle when observing the book with their eyes; on the other hand, through the lifting and lowering adjustment of the learning platform, the large adjustment of the inclination angle of the viewing angle adjustment board is further reduced, thereby better achieving that students are in a normal viewing angle when observing the book with their eyes.

In a further technical solution, the lifting structure is mainly composed of a small hydraulic jack, the bottom of which is detachably connected to the desk, and the top of which is fixedly connected to the bottom surface of the learning platform. The small hydraulic jack is designed to cooperate with the guide structure to make the lifting and adjustment of the learning platform more stable. Of course, the lifting structure can also be replaced by other structures, such as a scissor structure.

In a further technical solution, the support adjustment structure is mainly composed of a support inclined plate and an inclined plate slot, one end of the support inclined plate is hingedly connected to the bottom surface of the viewing angle adjustment plate, and the learning platform is located on the corresponding two side edges of the top opening of the storage space, and multiple groups of the inclined plate slots that are compatible with the other end of the support inclined plate are opened, and the other end of the support inclined plate can be switched between any two groups of inclined plate slots. Through the design that the support adjustment structure is mainly composed of a support inclined plate and an inclined plate slot, the other end of the support inclined plate can be switched between any two groups of inclined plate slots, which facilitates the viewing angle adjustment plate to obtain a suitable angle, so that students can observe books with their eyes in a normal viewing angle.

In a further technical solution, the resisting column is a hollow structure with an opening at the top, and is provided with a lifting support rod that is telescopic and locked along the height direction of the resisting column, and a head support pad is provided on the top of the lifting support rod. Through the design of the lifting support rod and the head support pad, and the coordinated design of the resisting column and the cushion, the user's body is directly blocked from excessively tilting toward the desk, and the user's head is indirectly restricted from excessively tilting toward the desk, and the user's head is further directly blocked from excessively tilting toward the desk.

In a further technical solution, magnets are evenly embedded in the viewing angle adjustment plate, and a pressure strip used to match the magnets in the viewing angle adjustment plate and to fix the book is provided on the upper surface of the viewing angle adjustment plate. By evenly embedding a plurality of magnets in the viewing angle adjustment plate and designing the pressure strip used to match the magnets, the book can be stably placed on the viewing angle adjustment plate.

In a further technical solution, the upper surface of the viewing angle adjustment plate is configured as a stepped surface. The design of the stepped surface further facilitates the book to be stably placed on the viewing angle adjustment plate.

The beneficial effects of the utility model are:

1. The posture distance adjustment part limits the distance between the user's head and the desk, ensuring that the distance between the student's eyes and the desk is not too short. At the same time, the book adjustment part that cooperates with the posture distance adjustment part adjusts the inclination of the book, ensuring that the student is in a straight-viewing perspective when observing the book with his eyes.

2. Through the coordinated design of the resisting column and the cushion, after the user sits on the stool next to the desk, it can directly prevent the user's body from tilting excessively toward the desk, and indirectly limit the user's head from tilting excessively toward the desk, or even fit the head onto the desk, thereby ensuring that the distance between the student's eyes and the desk is not too short.

3. Through the coordinated design of the learning platform and the viewing angle adjustment board, on the one hand, the design of the viewing angle adjustment board facilitates the adjustment of the inclination state of the book, ensuring that students are in a normal viewing angle when observing the book with their eyes; on the other hand, through the lifting and lowering adjustment of the learning platform, the large adjustment of the inclination angle of the viewing angle adjustment board is further reduced, so as to better achieve that students are in a normal viewing angle when observing the book with their eyes.

4. The design of a small hydraulic jack and a guide structure makes the lifting and adjustment of the learning platform more stable. Of course, the lifting structure can also be replaced by other structures, such as a scissor structure.

Through the design that the support adjustment structure is mainly composed of a support inclined plate and an inclined plate slot, the other end of the support inclined plate can be switched between any two sets of inclined plate slots, which facilitates the viewing angle adjustment plate to obtain a suitable angle, thereby enabling students to observe books with their eyes in a normal viewing angle.

5. Through the design of the lifting support rod and the head support pad, and the coordinated design of the resisting column and the cushion, it can directly prevent the user's body from tilting excessively toward the desk, and indirectly limit the user's head from tilting excessively toward the desk, while further directly preventing the user's head from tilting excessively toward the desk.

6. By evenly embedding a number of magnets in the viewing angle adjustment board and designing a pressure strip used in conjunction with the magnets, the book can be stably placed on the viewing angle adjustment board.

7. The stepped surface design makes it easier for books to be stably placed on the viewing angle adjustment board.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an anti-myopia device for a desk according to Embodiment 1 of the present utility model.

FIG. 2 is a side view of FIG. 1 .

Description of reference numerals:

1—desk; 2—resistance column; 3—cushion; 4—learning platform; 5—viewing angle adjustment plate; 6—guide structure; 7—storage space; 8—hinge connection; 9—small hydraulic jack; 10—support inclined plate; 11—inclined plate slot; 12—lifting support rod; 13—head support pad; 14—pressure strip; 15—step surface.

DETAILED DESCRIPTION

The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

Embodiment 1:

As shown in FIG. 1-2 , a device for preventing myopia for a desk includes a posture distance adjustment part for limiting the distance between the user's head and the desk 1 , and a book adjustment part for adjusting the tilt state of a book.

The working principle of the above technical solution is as follows:

The posture distance adjustment part limits the distance between the user's head and the desk 1, ensuring that the distance between the student's eyes and the desk 1 is not too short. At the same time, the book adjustment part that cooperates with the posture distance adjustment part adjusts the inclination of the book, ensuring that the student is in a straight-on perspective when observing the book with his eyes (similar to the direction of the front view of the book in drawing, the same below).

In another embodiment, the posture distance adjustment part is mainly composed of a resisting column 2 and a cushion 3, the bottom of the resisting column 2 is detachably connected to the edge of the desk 1 on the user's side (for example, the bottom of the resisting column 2 is set in an L shape, and a first connecting hole is provided on the bottom surface of the L shape, and the corresponding edge of the desk 1 on the user's side is provided with a second connecting hole of the same specification and number as the first connecting hole, and the first connecting hole and the second connecting hole are connected together by bolts and nuts), and the cushion 3 is set on the resisting column 2 close to the user's side, and the cushion 3 has a buffering effect, and the user is more comfortable leaning on the cushion 3. Through the coordinated design of the resisting column 2 and the cushion 3, after the user sits on the stool next to the desk 1, it can directly prevent the user's body from tilting excessively in the direction of the desk 1, and indirectly limit the user's head from tilting excessively in the direction of the desk 1, or even fit on the desk 1, thereby ensuring that the distance between the student's eyes and the desk 1 is not too short.

In another embodiment, the book adjustment part is located at the rear side of the entire posture distance adjustment part, which is mainly composed of a learning platform 4 and a viewing angle adjustment plate 5. A guide structure 6 for sliding up and down in the vertical direction is formed between the learning platform 4 and the resisting column 2. Specifically, a dovetail-shaped protrusion is provided on the side of the learning platform 4 close to the resisting column 2, and a dovetail groove matching the dovetail-shaped protrusion is provided on the resisting column 2. The dovetail-shaped protrusion is combined with the dovetail groove to realize sliding up and down in the vertical direction; a lifting structure is provided between the bottom surface of the learning platform 4 and the top surface of the desk 1; the upper surface of the learning platform 4 is raised along the desk 1 from the front to the back. The direction to the rear is divided into a tool placement area (where learning tools such as pencil cases and compasses can be placed) and a book placement area. The book placement area has a storage space 7 with a top opening for users to store learning items (used to store paper items, separated from books to avoid wrinkles, such as A4 paper and exercise books); the viewing angle adjustment plate 5 is located on the top opening of the storage space 7, and the edge of the viewing angle adjustment plate 5 close to one side of the blocking column 2 is hingedly connected 8 to the corresponding edge of the top opening of the storage space, and a support adjustment structure for adjusting the tilt angle of the viewing angle adjustment plate 5 is provided between the viewing angle adjustment plate 5 and the learning platform 4. Through the coordinated design of the learning platform 4 and the viewing angle adjustment plate 5, on the one hand, the design of the viewing angle adjustment plate 5 facilitates the adjustment of the tilt state of the book, ensuring that the student is in a normal viewing angle when observing the book with his eyes; on the other hand, through the lifting and lowering adjustment of the learning platform 4, the large adjustment of the tilt angle of the viewing angle adjustment plate 5 is further reduced, so that the student can better achieve a normal viewing angle when observing the book with his eyes.

In another embodiment, the lifting structure is mainly composed of a small hydraulic jack 9, the bottom of which is detachably connected to the desk 1, and the top of which is fixedly connected to the bottom surface of the learning platform 4. The small hydraulic jack 9 is designed to cooperate with the guide structure 6 to make the lifting and adjustment of the learning platform 4 smoother. In order to save space, the small hydraulic jack 9 can also be installed on the bottom surface of the desk 1, and the part supporting the lifting extends upward until it is fixedly connected (for example, welded) to the bottom surface of the learning platform 4. In addition, the maximum lifting height of the small hydraulic jack 9 is still less than the height of the guide structure 6. Of course, the lifting structure can also be replaced by other structures, such as a scissors structure, or multiple sets of screw rod assemblies for lifting.

In another embodiment, the support adjustment structure is mainly composed of a support inclined plate 10 and an inclined plate slot 11, one end of the support inclined plate 10 is hingedly connected to the bottom surface of the viewing angle adjustment plate 5, and the learning platform 4 is located on the corresponding two side edges of the top opening of the storage space, and multiple groups of the inclined plate slots 11 that are adapted to the other end of the support inclined plate 10 are opened (a group of inclined plate slots 11 is two, which respectively limit the two sides of the other end of the support inclined plate 10), and the other end of the support inclined plate 10 can be switched between any two groups of inclined plate slots 11. Through the design that the support adjustment structure is mainly composed of the support inclined plate 10 and the inclined plate slot 11, the other end of the support inclined plate 10 can be switched between any two groups of inclined plate slots 11, which facilitates the viewing angle adjustment plate 5 to obtain a suitable angle, so that students can observe books with their eyes in a normal viewing angle.

In another embodiment, the resisting column 2 is a hollow structure with an opening at the top, and is provided with a lifting support rod 12 which is telescopic and locked along the height direction of the resisting column 2 (for example, a plurality of fixing holes arranged along the height are provided on the resisting column 2; a plurality of through holes arranged along the height and matching the specifications of the fixing holes are provided on the lifting support rod 12; when the lifting support rod 12 is extended or retracted to a suitable position, each fixing hole and the through hole corresponding to the fixing hole are passed through connecting parts such as latches or bolts in turn to limit and fix the height direction. Of course, the locking of the resisting column 2 and the lifting support rod 12 can also be achieved by other existing mature technical methods.), and a head support pad 13 is provided on the top of the lifting support rod 12. Through the design of the lifting support rod 12 and the head support pad 13, and the coordinated design of the resisting column 2 and the cushion 3, the user's body is directly blocked from tilting excessively toward the desk 1, and the user's head is indirectly restricted from tilting excessively toward the desk 1, which further directly blocks the user's head from tilting excessively toward the desk 1.

In another embodiment, magnets (not shown) are uniformly embedded in the viewing angle adjustment plate 5, and a pressure strip 14 used in conjunction with the magnets in the viewing angle adjustment plate 5 and used to fix the book is provided on the upper surface of the viewing angle adjustment plate 5. The design of a plurality of magnets uniformly embedded in the viewing angle adjustment plate 5 and the pressure strip 14 used in conjunction with the magnets facilitates the book to be stably placed on the viewing angle adjustment plate 5 (under the action of the magnetic suction, the book is pressed by the magnetic force between the pressure strip 14 and the magnet). Of course, other existing mature methods can also be used to fix the book. For example, a piano sheet music page-turning clip.

In another embodiment, the upper surface of the viewing angle adjustment plate 5 is configured as a stepped surface 15. The stepped surface 15 further facilitates the book to be stably placed on the viewing angle adjustment plate 5.

The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims (6)

1. A myopia prevention device for a desk is characterized by comprising a gesture distance adjusting part for limiting the distance between the head of a user and the desk and a book adjusting part for adjusting the inclination state of a book;

The gesture distance adjusting part mainly comprises a resisting cylinder and a back cushion, wherein the bottom of the resisting cylinder is detachably connected to the edge of the desk, which is positioned on one side of a user, and the back cushion is arranged on the resisting cylinder, which is close to one side of the user;

The book adjusting part is positioned at the rear side of the whole gesture distance adjusting part and mainly comprises a learning platform and a visual angle adjusting plate,

A guide structure which slides up and down along the vertical direction is formed between the learning platform and the resisting column body;

A lifting structure is arranged between the bottom surface of the learning platform and the top surface of the desk;

The upper surface of the learning platform is divided into an appliance placement area and a book placement area along the front-to-back direction of the desk, and the book placement area is provided with a storage space with an open top and used for storing learning objects for a user;

The visual angle adjusting plate is positioned on the top opening of the storage space, the edge of the visual angle adjusting plate, which is close to one side of the resisting column body, is hinged with the corresponding opening edge of the top opening of the storage space, and a supporting and adjusting structure for adjusting the inclination angle of the visual angle adjusting plate is arranged between the visual angle adjusting plate and the learning platform.

2. The myopia prevention apparatus for a desk according to claim 1, wherein the lifting structure is mainly composed of a small hydraulic jack, the bottom of the small hydraulic jack is detachably connected to the desk, and the top of the small hydraulic jack is fixedly connected to the bottom surface of the learning platform.

3. The myopia prevention device for a desk according to claim 1, wherein the supporting and adjusting structure mainly comprises a supporting inclined plate and an inclined plate clamping groove, one end of the supporting inclined plate is hinged with the bottom surface of the viewing angle adjusting plate, the learning platform is provided with a plurality of groups of inclined plate clamping grooves which are arranged on the edges of two corresponding sides of the top opening of the storage space and are matched with the other end of the supporting inclined plate, and the other end of the supporting inclined plate can be converted between any two groups of inclined plate clamping grooves.

4. The myopia prevention apparatus according to claim 1, wherein the supporting column is a hollow structure with an opening at the top, a lifting support rod is sleeved in the supporting column, and the lifting support rod is telescopic and locked along the height direction of the supporting column, and a head support pad is arranged at the top of the lifting support rod.

5. The myopia prevention apparatus for a desk according to claim 1, wherein magnets are uniformly embedded in the viewing angle adjusting plate, and a pressing strip which is used in cooperation with the magnets in the viewing angle adjusting plate and is used for fixing books is arranged on the upper surface of the viewing angle adjusting plate.

6. The myopia prevention apparatus according to claim 5, wherein the upper surface of the viewing angle adjusting plate is configured as a stepped surface.