A training device for myopia prevention and control recovery

Abstract

The utility model relates to myopia prevention and control training technical field discloses a kind of training device for myopia prevention and control recovery, including main support and eyesight training card, the upper and lower two sides symmetry fixed mounting of main support outer wall left end is equipped with two first prism light transmission optical lens, the outer wall sliding sleeve joint of main support is equipped with limit cover, the outer wall fixedly connected with two second prism light transmission optical lens of limit cover, two the second prism light transmission optical lens symmetry distribution in the upper and lower sides of limit cover, the back of main support is equipped with limit groove, the inside of limit groove is equipped with screw rod.The utility model is by using the cooperation of main support, first prism light transmission optical lens, second prism light transmission optical lens and eyesight training card, user can carry out eyesight training in family or classroom environment, relieve eyesight fatigue, prevent eyesight decline, it is more convenient to operate, without professional medical equipment, conducive to promotion, to facilitate the training of myopia prevention and control.

Description

Technical Field

[0001] This utility model relates to the field of myopia prevention and control training technology, and more specifically to a training device for myopia prevention and recovery. Background Technology

[0002] Myopia, or nearsightedness, is a type of refractive error that causes blurred vision when parallel light rays focus in front of the retina after passing through the eye's refractive system. While the exact causes are not yet fully understood, it is often related to genetic factors and poor eye habits. With the increasing demand for vision health in modern society, traditional myopia prevention and control methods typically require specialized medical environments and equipment, are complex to implement, and are not widely adopted, thus requiring improvement. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a training device for myopia prevention and recovery, so as to solve the problems existing in the background art.

[0004] This utility model provides the following technical solution: a training device for myopia prevention and recovery, comprising a main support and a vision training card. Two No. 1 prism optical lenses are symmetrically fixedly installed on the upper and lower sides of the left end of the outer wall of the main support. A limit cover is slidably sleeved on the outer wall of the main support. Two No. 2 prism optical lenses are fixedly connected to the outer wall of the limit cover. The two No. 2 prism optical lenses are symmetrically distributed on the upper and lower sides of the limit cover. A limit groove is opened on the back of the main support. A lead screw is provided inside the limit groove. The two ends of the lead screw are rotatably installed on both sides of the inner wall of the limit groove through bearings.

[0005] Furthermore, a positioning block is slidably connected inside the limiting groove, and the internal thread of the positioning block is connected to the outer wall of the lead screw. One side of the positioning block is fixedly connected to one side of the inner wall of the limiting cover.

[0006] Furthermore, a worm and a worm wheel are provided on one side inside the limiting groove. The worm and the worm wheel mesh with each other, and the bottom end of the worm is rotatably mounted on one side of the bottom of the inner wall of the limiting groove through a bearing.

[0007] Furthermore, the upper part of the outer wall of the worm gear is rotatably mounted on one side of the top of the main support via a bearing, and a knob is fixedly connected to the top of the worm gear.

[0008] Furthermore, a handle is fixedly connected to the right end of the main support, and the handle is integrally formed with the main support.

[0009] Furthermore, the vision training card has multiple sets of E-shaped markings at different angles.

[0010] The technical effects and advantages of this utility model are as follows: 1. This utility model, through the combination of a main support frame, a first-prism optical lens, a second-prism optical lens, and a vision training card, allows users to conduct vision training in a home or classroom environment, relieving eye fatigue and preventing vision decline. It is relatively easy to operate, requires no professional medical equipment, and is easy to promote, thus facilitating myopia prevention and control training.

[0011] 2. This utility model, through the cooperation of a limiting groove, knob, worm gear, worm wheel, lead screw, positioning block and limiting cover, facilitates the movement of the second prism optical lens, thereby adjusting the distance between the second prism optical lens and the first prism optical lens, making it convenient for users to conduct binocular vision training through the second prism optical lens and the first prism optical lens. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the vision training card structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the back structure of the main support, the first prism optical lens, and the second prism optical lens of this utility model.

[0015] Figure 4 This is an enlarged schematic diagram of the structure at point A of this utility model.

[0016] The attached diagram is labeled as follows: 1. Main support; 2. Prism lens No. 1; 3. Prism lens No. 2; 4. Limiting cover; 5. Limiting groove; 51. Knob; 52. Worm gear; 53. Worm wheel; 54. Lead screw; 55. Positioning block; 6. Handle; 7. Vision training card. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The training device for myopia prevention and recovery involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] Example 1: like Figure 1-4As shown, a training device for myopia prevention and recovery includes a main support 1 and a vision training card 7. Two first-order prism optical lenses 2 are symmetrically fixed on the upper and lower sides of the left end of the outer wall of the main support 1. A limit cover 4 is slidably sleeved on the outer wall of the main support 1. Two second-order prism optical lenses 3 are fixedly connected to the outer wall of the limit cover 4. The two second-order prism optical lenses 3 are symmetrically distributed on the upper and lower sides of the limit cover 4. A handle 6 is fixedly connected to the right end of the main support 1. The handle 6 is integrally formed with the main support 1. The vision training card 7 is provided with multiple sets of E-shaped markings at different angles.

[0019] In this embodiment, the handle 6 allows the user to easily hold the main support 1. Vision training can be performed by rotating and alternating the upper and lower prism lenses 2 and 3. The front of prism lenses 2 and 3 is a convex lens, and the back is a concave lens. The convex lens is primarily used to correct farsightedness, which is caused by a weak refractive power of the eye, resulting in near objects not forming a clear image on the retina. The convex lens focuses light behind the retina, thus improving farsighted vision. The concave lens is primarily used to correct nearsightedness, which is caused by an excessive refractive power of the eye, resulting in distant objects not forming a clear image on the retina. The concave lens focuses light in front of the retina, thus improving nearsighted vision. By practicing the reverse combination of the convex and concave lenses in prism lenses 2 and 3, the user can improve the accommodative function of the ciliary muscle and the six extraocular muscles.

[0020] Example 2: like Figure 1-4 As shown, a limiting groove 5 is provided on the back of the main body support 1. A lead screw 54 is provided inside the limiting groove 5. The two ends of the lead screw 54 are rotatably mounted on both sides of the inner wall of the limiting groove 5 through bearings. A positioning block 55 is slidably connected inside the limiting groove 5. The internal thread of the positioning block 55 is connected to the outer wall of the lead screw 54. One side of the positioning block 55 is fixedly connected to one side of the inner wall of the limiting cover 4. A worm 52 and a worm wheel 53 are provided on one side inside the limiting groove 5. The worm 52 and the worm wheel 53 mesh with each other. The bottom end of the worm 52 is rotatably mounted on one side of the bottom of the inner wall of the limiting groove 5 through bearings. The top of the outer wall of the worm 52 is rotatably mounted on one side of the top of the main body support 1 through bearings. A knob 51 is fixedly connected to the top of the worm 52.

[0021] In this embodiment, the knob 51 allows the user to easily rotate the worm gear 52, which drives the worm wheel 53 and the lead screw 54 to rotate. The lead screw 54 can drive the positioning block 55 to slide inside the limiting groove 5. The positioning block 55 also drives the limiting cover 4 to move outside the main support 1. The limiting cover 4 simultaneously drives the two second-stage prism optical lenses 3 to move, thereby adjusting the distance between the second-stage prism optical lens 3 and the first-stage prism optical lens 2, making it convenient for the user to perform vision training through the second-stage prism optical lens 3 and the first-stage prism optical lens 2.

[0022] In summary, as Figure 1-4 As shown, this training device for myopia prevention and recovery involves placing the vision training card 7 40 centimeters away from the eye and attaching it to a wall or bookshelf with glue. The user also wears prevention glasses. For example, when training the right eye, the user covers the left eye or closes the eye directly. The user holds the handle 6 and the main support 1 to place the upper second prism optical lens 3 in front of the user's right eye. The user observes the "E" mark on the vision training card 7 through the upper second prism optical lens 3, and after clearly seeing and reading the direction of the "E" mark, pauses for 1-2 seconds. Then, the user flips the main support 1 and uses the lower second prism optical lens 3 to observe the next set of "E" marks on the vision training card 7. This process is repeated for left eye training, where the user covers the right eye or closes the eye directly. The method is the same as the right eye training steps described above. For simultaneous binocular training, the user can rotate the worm gear 52 via the knob 51. The worm gear 52 drives the worm wheel 53 and the lead screw 54 to rotate. The lead screw 54 drives the positioning block 55 to slide inside the limiting groove 5. The positioning block 55 moves the two second-order prism optical lenses 3 through the limiting cover 4, thereby adjusting the distance between the second-order prism optical lens 3 and the first-order prism optical lens 2. The user can then train by simultaneously looking at the E-mark on the vision training card 7 through the upper second-order prism optical lens 3 and the first-order prism optical lens 2. Then, the main support 1, the first-order prism optical lens 2, and the second-order prism optical lens 3 are flipped over, and the user can train by using the lower second-order prism optical lens 3 and the first-order prism optical lens 2 in the same way.

[0023] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A training device for myopia prevention and recovery, comprising a main support (1) and a vision training card (7), characterized in that, Two first-order prism optical lenses (2) are symmetrically fixed on the upper and lower sides of the left side of the outer wall of the main support (1). A limit cover (4) is slidably sleeved on the outer wall of the main support (1). Two second-order prism optical lenses (3) are fixedly connected to the outer wall of the limit cover (4). The two second-order prism optical lenses (3) are symmetrically distributed on the upper and lower sides of the limit cover (4). A limit groove (5) is opened on the back of the main support (1). A lead screw (54) is provided inside the limit groove (5). The two ends of the lead screw (54) are rotatably installed on both sides of the inner wall of the limit groove (5) through bearings.

2. The training device for myopia prevention and recovery according to claim 1, characterized in that: The limiting groove (5) is slidably connected to a positioning block (55), the positioning block (55) is threadedly connected to the outer wall of the lead screw (54), and one side of the positioning block (55) is fixedly connected to one side of the inner wall of the limiting cover (4).

3. The training device for myopia prevention and recovery according to claim 1, characterized in that: The limiting groove (5) has a worm (52) and a worm wheel (53) on one side. The worm (52) and the worm wheel (53) mesh with each other. The bottom end of the worm (52) is rotatably mounted on one side of the bottom of the inner wall of the limiting groove (5) through a bearing.

4. The training device for myopia prevention and recovery according to claim 3, characterized in that: The worm (52) is rotatably mounted on one side of the top of the main support (1) via a bearing on the upper part of the outer wall of the worm (52), and a knob (51) is fixedly connected to the top of the worm (52).

5. A training device for myopia prevention and recovery according to claim 1, characterized in that: A handle (6) is fixedly connected to the right end of the main support (1), and the handle (6) and the main support (1) are integrally formed.

6. A training device for myopia prevention and recovery according to claim 1, characterized in that: The vision training card (7) has multiple sets of E-shaped markings at different angles.

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