阅读说明：本技术 一种视力预防训练仪 (Vision prevention training instrument ) 是由 徐斌 于 2021-07-12 设计创作，主要内容包括：本发明提出了一种视力预防训练仪,涉及视力预防技术领域。一种视力预防训练仪,包括壳体和透光通道,透光通道内间隔设有棱镜和物镜；壳体设有用于驱动物镜沿透光通道往复移动的驱动组件；壳体设有电源、扬声模块、处理器和存储模块,电源、扬声模块、存储模块、驱动组件均与处理器电连接；存储模块用于储存音频数据并传输到处理器；处理器用于接收音频数据并传输到扬声模块；处理器用于控制驱动组件驱动物镜沿透光通道往复移动。采用本发明,能够对使用者的眼部睫状肌和眼外肌反复锻炼,提高使用者眼部视觉功能的调节能力,有效预防近视眼；而且通过恢复睫状肌和晶状体弹性及自身调节能力,对于近视眼患者,可提升裸眼视力。(The invention provides a vision prevention training instrument, and relates to the technical field of vision prevention. A vision prevention training instrument comprises a shell and a light transmission channel, wherein prisms and objective lenses are arranged in the light transmission channel at intervals; the shell is provided with a driving component for driving the objective lens to move back and forth along the light transmission channel; the shell is provided with a power supply, a loudspeaking module, a processor and a storage module, and the power supply, the loudspeaking module, the storage module and the driving assembly are all electrically connected with the processor; the storage module is used for storing audio data and transmitting the audio data to the processor; the processor is used for receiving the audio data and transmitting the audio data to the loudspeaker module; the processor is used for controlling the driving component to drive the objective lens to move back and forth along the light-transmitting channel. By adopting the invention, the ciliary muscle and the extraocular muscle of the eye of the user can be repeatedly exercised, the adjusting capability of the visual function of the eye of the user is improved, and the myopia is effectively prevented; and the elasticity and the self-adjusting capability of ciliary muscles and crystalline lenses are recovered, so that the eyesight of the naked eyes of the myopic eye patient can be improved.)

1. The utility model provides a vision prevention training appearance which characterized in that: the lens comprises a shell, wherein the shell is provided with a light-transmitting channel penetrating through the shell, and prisms and objective lenses are arranged in the light-transmitting channel at intervals; the prism is a concave lens, the objective lens is a convex lens, and the prism is arranged on the shell; the shell is provided with a driving assembly for driving the objective lens to reciprocate along the light-transmitting channel, and the objective lens is arranged on the driving assembly; the shell is provided with a power supply, a loudspeaking module, a processor and a storage module, and the power supply, the loudspeaking module, the storage module and the driving assembly are all electrically connected with the processor;

the storage module is used for storing audio data and transmitting the audio data to the processor;

the processor is used for receiving the audio data and transmitting the audio data to the speaker module; the processor is used for controlling the driving component to drive the objective lens to move back and forth along the light-transmitting channel;

the loudspeaker module is used for receiving the audio data transmitted by the processor and sending out voice;

the power supply is used for supplying electric energy.

2. A vision prevention training machine as defined in claim 1 wherein: the driving assembly comprises a mirror sleeve, a driving motor and a screw rod arranged on a transmission shaft of the driving motor; the driving motor is arranged on the shell and is electrically connected with the processor, and the objective lens is arranged on the lens sleeve; the mirror sleeve is provided with a screw hole matched with the screw rod, and the screw rod penetrates through the screw hole.

3. A vision prevention training machine as defined in claim 2 wherein: the motor driving device further comprises a limiting plate, one end of the limiting plate is arranged on the driving motor, and the other end of the limiting plate is provided with a mounting plate; one end of the screw rod, which is far away from the driving motor, is rotatably arranged on the mounting plate.

4. A vision prevention training machine as defined in claim 3 wherein: the side wall of the mirror sleeve close to the limiting plate is a plane and is abutted to the limiting plate.

5. A vision prevention training machine as defined in claim 1 wherein: an ocular is arranged in the light-transmitting channel and is arranged in the shell; the objective lens is arranged between the eyepiece and the prism.

6. A vision prevention training machine as defined in claim 1 wherein: the speaker module is an earphone, and the earphone is electrically connected with the processor.

7. A vision prevention training machine as defined in claim 6 wherein: the earphone comprises a casing, a plurality of earphones, a connecting rod and a sliding rod, wherein the number of the earphones is two, the earphones are oppositely arranged, the connecting rod and the sliding rod are arranged between any earphone and the casing, one end of the connecting rod is connected with the earphones, and the connecting rod is provided with a sliding hole; one end of the sliding rod is connected with the shell, and the other end of the sliding rod is slidably arranged in the sliding hole.

8. A vision prevention training machine as defined in claim 7 wherein: a guide strip is arranged in the sliding hole and fixed on the connecting rod; the side wall of the sliding rod is provided with a guide sliding chute matched with the guide strip; the guide strip is arranged in the guide sliding groove in a sliding manner.

9. A vision prevention training machine as defined in claim 7 wherein: the sliding rod is provided with an elastic limiting piece, and the side wall of the connecting rod is provided with a plurality of limiting grooves matched with the limiting piece at intervals along the sliding direction of the sliding rod; one end of the limiting piece is embedded into the limiting groove.

10. A vision prevention training machine as defined in claim 9 wherein: the side wall of the limiting sheet close to the limiting groove is arc-shaped; the limiting piece is provided with a connecting piece; the connecting piece is fixed on the sliding rod through the locking bolt.

Technical Field

The invention relates to the technical field of vision prevention, in particular to a vision prevention training instrument.

Background

Vision refers to the ability of the retina to resolve images. Vision refers to the ability to resolve small or distant objects and subtle parts, the ability of the eye to recognize distant objects or objects is called distance vision, and the ability to recognize close small objects or objects is called near vision. In the health examination, the distant vision is mainly examined. Under certain conditions, the smaller the object that the eye can resolve, the greater the visual acuity, and the basic feature of vision is to discern the magnitude of the distance between two points. The vision can be divided into static vision, dynamic vision and night vision. Static vision refers to vision detected when both a person and an observed object are in a static state, and dynamic vision refers to the ability of eyes to capture, decompose and perceive images of a moving object when observing the moving object. When the vehicle is driven in a high-speed environment, the physiological state of the human body is also changed, and the physiological state is specifically shown as follows: the dynamic vision of the eye is reduced.

The quality of vision is determined by the amount of ability of the retina to resolve images, however, when the refractive medium of the eye (e.g., cornea, lens, vitreous, etc.) becomes cloudy or refractive errors (including myopia, hyperopia, astigmatism, etc.) exist, vision of the eye declines even when the retina functions well. Refractive media opacities of the eye can be treated surgically and refractive errors require correction by lenses.

Due to the popularization of the existing electronic equipment, a plurality of people stare at the electronic screen for a long time, the eyes are easy to be tired, the eye vision function adjusting capability is poor, and the eyes are easy to become myopia.

Disclosure of Invention

The invention aims to provide a vision prevention training instrument which can repeatedly exercise ciliary muscles and extraocular muscles of eyes of a user, improve the adjusting capability of the visual function of the eyes of the user and effectively prevent myopia; and the elasticity and the self-adjusting capability of ciliary muscles and crystalline lenses are recovered, so that the eyesight of the naked eyes of the myopic eye patient can be improved.

The embodiment of the invention is realized by the following steps:

the embodiment of the application provides a vision prevention training instrument, which comprises a shell, wherein the shell is provided with a light-transmitting channel penetrating through the shell, and a prism and an objective lens are arranged in the light-transmitting channel at intervals; the prism is a concave lens, the objective lens is a convex lens, and the prism is arranged on the shell; the shell is provided with a driving component for driving the objective lens to reciprocate along the light-transmitting channel, and the objective lens is arranged on the driving component; the shell is provided with a power supply, a loudspeaking module, a processor and a storage module, and the power supply, the loudspeaking module, the storage module and the driving assembly are all electrically connected with the processor; the storage module is used for storing audio data and transmitting the audio data to the processor; the processor is used for receiving the audio data and transmitting the audio data to the loudspeaker module; the processor is used for controlling the driving component to drive the objective lens to reciprocate along the light-transmitting channel; the loudspeaker module is used for receiving the audio data transmitted by the processor and sending out voice; the power supply is used for supplying electric energy.

Further, in some embodiments of the present invention, the driving assembly includes a mirror sleeve, a driving motor, and a screw rod disposed on a transmission shaft of the driving motor; the driving motor is arranged on the shell and is electrically connected with the processor, and the objective lens is arranged on the lens sleeve; the mirror sleeve is provided with a screw hole matched with the screw rod, and the screw rod penetrates through the screw hole.

Further, in some embodiments of the present invention, the driving motor further includes a limiting plate, one end of the limiting plate is disposed on the driving motor, and the other end of the limiting plate is disposed with a mounting plate; and one end of the screw rod, which is far away from the driving motor, is rotatably arranged on the mounting plate.

Further, in some embodiments of the present invention, the side wall of the lens sleeve close to the position-limiting plate is a flat surface and abuts against the position-limiting plate.

Further, in some embodiments of the present invention, an eyepiece is disposed in the light-transmitting channel, and the eyepiece is disposed in the housing; the objective lens is arranged between the eyepiece and the prism.

Further, in some embodiments of the present invention, the speaker module is an earphone, and the earphone is electrically connected to the processor.

Further, in some embodiments of the present invention, two earphones are oppositely disposed, a connecting rod and a sliding rod are disposed between any one of the earphones and the housing, one end of the connecting rod is connected to the earphones, and the connecting rod is provided with a sliding hole; one end of the sliding rod is connected with the shell, and the other end of the sliding rod is arranged in the sliding hole in a sliding mode.

Further, in some embodiments of the present invention, a guide bar is disposed in the sliding hole, and the guide bar is fixed to the connecting rod; the side wall of the sliding rod is provided with a guide sliding chute matched with the guide strip; the guide strip is arranged on the guide sliding groove in a sliding manner.

Further, in some embodiments of the present invention, the sliding rod is provided with an elastic limiting piece, and the side wall of the connecting rod is provided with a plurality of limiting grooves at intervals along the sliding direction of the sliding rod, wherein the limiting grooves are matched with the limiting piece; one end of the limiting sheet is embedded into the limiting groove.

Further, in some embodiments of the present invention, the side wall of the position-limiting piece adjacent to the position-limiting groove is arc-shaped; the limiting sheet is provided with a connecting sheet; the connecting piece is fixed on the sliding rod through the locking bolt.

Compared with the prior art, the embodiment of the invention at least has the following advantages or beneficial effects:

the embodiment of the invention provides a vision prevention training instrument, which comprises a shell, wherein the shell is provided with a light-transmitting channel penetrating through the shell, and prisms and objective lenses are arranged in the light-transmitting channel at intervals; the prism is a concave lens, the objective lens is a convex lens, and the prism is arranged on the shell; the shell is provided with a driving component for driving the objective lens to reciprocate along the light-transmitting channel, and the objective lens is arranged on the driving component; the shell is provided with a power supply, a loudspeaking module, a processor and a storage module, and the power supply, the loudspeaking module, the storage module and the driving assembly are all electrically connected with the processor; the storage module is used for storing audio data and transmitting the audio data to the processor; the processor is used for receiving the audio data and transmitting the audio data to the loudspeaker module; the processor is used for controlling the driving component to drive the objective lens to reciprocate along the light-transmitting channel; the loudspeaker module is used for receiving the audio data transmitted by the processor and sending out voice; the power supply is used for supplying electric energy.

When the lens is actually used, the shell is worn on the head of a user, the prism is close to the eyes of the user, the prism is the concave lens, the objective lens is the convex lens, so that light reflected by an external object passes through the light-transmitting channel and the objective lens to form an image on the prism, and the external object can be seen by the eyes of the user.

The user stares at an external object, drives the objective lens to reciprocate along the light-transmitting channel through the driving component, adjusts the focal length of the objective lens, enables the object image seen by the user to be clear and blurred, then clear, and repeats the steps in such a circulating way, so that ciliary muscles and extraocular muscles of the user can be repeatedly exercised, the adjusting capability of the visual function of the eyes of the user is improved, and the myopia is effectively prevented; and the elasticity and the self-adjusting capability of ciliary muscles and crystalline lenses are recovered, so that the eyesight of the naked eyes of the myopic eye patient can be improved.

The power supply, the loud-speaking module, the storage module and the driving assembly are all electrically connected with the processor through the arrangement of the power supply, the loud-speaking module, the processor and the storage module; the processor is used for controlling the driving component to drive the objective lens to reciprocate along the light-transmitting channel; the power supply is used for supplying electric energy. The storage module is used for storing audio data, such as related soothing music and the like. The audio data are transmitted to the processor, and the processor is used for receiving the audio data and transmitting the audio data to the loudspeaker module; the loudspeaking module is used for receiving the audio data transmitted by the processor and sending out voice, so that voice signals such as music and the like can be sent out, physical and mental relaxation of a user is guided through a sound wave healing technology, the psychological state is adjusted, physical and mental tension is relieved, positive belief is built in the brain of the user, dopamine secretion is enhanced, the increase of an axis of the eye is inhibited, and accordingly myopia is effectively prevented and controlled.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a training apparatus according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating a positional relationship among a prism, an objective lens, and an eyepiece according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a driving assembly according to an embodiment of the present invention;

FIG. 4 is an exploded view of a connecting rod and a sliding rod provided in accordance with an embodiment of the present invention;

fig. 5 is a top view of a spacing piece according to an embodiment of the invention.

Icon: 1-a prism; 2-an objective lens; 3-ocular lens; 4-a shell; 5-an earphone; 6-driving a motor; 7-a screw; 8-a mirror sleeve; 9-a limiting plate; 10-mounting a plate; 11-a connecting rod; 12-a slide bar; 13-a slide hole; 14-a guide strip; 15-a guide chute; 16-a limiting piece; 17-a limit groove; 18-a connecting piece; 19-locking the bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or vertical, but may be slightly inclined. Such as "horizontal" simply means that its orientation is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" represents at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

Referring to fig. 1 to 5, the present embodiment provides a training instrument for preventing eyesight, which includes a housing 4, wherein the housing 4 is provided with a light-transmitting channel penetrating through the housing 4, and a prism 1 and an objective lens 2 are disposed in the light-transmitting channel at an interval; the prism 1 is a concave lens, the objective lens 2 is a convex lens, and the prism 1 is provided in the housing 4; the housing 4 is provided with a driving assembly for driving the objective lens 2 to reciprocate along the light-transmitting channel, and the objective lens 2 is arranged on the driving assembly; the housing 4 is provided with a power supply, a speaker module, a processor and a storage module, and the power supply, the speaker module, the storage module and the driving assembly are all electrically connected with the processor; the storage module is used for storing audio data and transmitting the audio data to the processor; the processor is used for receiving the audio data and transmitting the audio data to the loudspeaker module; the processor is used for controlling the driving component to drive the objective lens 2 to reciprocate along the light-transmitting channel; the loudspeaker module is used for receiving the audio data transmitted by the processor and sending out voice; the power supply is used for supplying electric energy.

During practical use, the shell 4 is worn on the head of a user, the prism 1 is close to the eyes of the user, the prism 1 is a concave lens, the objective lens 2 is a convex lens, light reflected by an external object passes through the light-transmitting channel and passes through the objective lens 2 to form an image on the prism 1, and the external object can be seen by the eyes of the user.

The user stares at an external object, the objective lens 2 is driven by the driving component to move back and forth along the light-transmitting channel, the focal length of the objective lens 2 is adjusted, the object seen by the user is imaged from clear to fuzzy and then clear, and the process is repeated in a circulating way, so that ciliary muscles and extraocular muscles of the user can be repeatedly exercised, the adjusting capability of the visual function of the eyes of the user is improved, and the myopia is effectively prevented; and the elasticity and the self-adjusting capability of ciliary muscles and crystalline lenses are recovered, so that the eyesight of the naked eyes of the myopic eye patient can be improved.

The power supply, the loud-speaking module, the storage module and the driving assembly are all electrically connected with the processor through the arrangement of the power supply, the loud-speaking module, the processor and the storage module; the processor is used for controlling the driving component to drive the objective lens 2 to reciprocate along the light-transmitting channel; the power supply is used for supplying electric energy. The storage module is used for storing audio data, such as related soothing music and the like. The audio data are transmitted to the processor, and the processor is used for receiving the audio data and transmitting the audio data to the loudspeaker module; the loudspeaking module is used for receiving the audio data transmitted by the processor and sending out voice, so that voice signals such as music and the like can be sent out, physical and mental relaxation of a user is guided through a sound wave healing technology, the psychological state is adjusted, physical and mental tension is relieved, positive belief is built in the brain of the user, dopamine secretion is enhanced, the increase of an axis of the eye is inhibited, and accordingly myopia is effectively prevented and controlled.

Alternatively, the processor of the present embodiment may employ an AT89S51 chip. The AT89S51 is a low-power-consumption and high-performance CMOS8 bit processor, and a universal 8 bit central processing unit and an ISP Flash storage unit are integrated in a chip, so that received information can be timely and effectively processed. It should be noted that the processor may be an integrated circuit chip having signal processing capability. The processor may be a general purpose processor including a central processing unit, a network processor, etc.; but may also be a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. And is not limited to the AT89S51 chip in this embodiment. Optionally, the power supply of this embodiment is a rechargeable lithium battery, and the storage module may adopt articles such as a memory card.

Optionally, one side of the prism 1 close to the eyes of the user is a plane, and the other side is a concave surface.

As shown in fig. 1 to 5, in some embodiments of the present invention, the driving assembly includes a mirror sleeve 8, a driving motor 6, and a screw 7 disposed on a transmission shaft of the driving motor 6; the driving motor 6 is disposed in the housing 4 and electrically connected to the processor, and the objective lens 2 is disposed in the lens housing 8; the lens sleeve 8 is provided with a screw hole matched with the screw rod 7, and the screw rod 7 penetrates through the screw hole.

The objective lens 2 is convenient to mount by arranging the lens sleeve 8; through setting up driving motor 6, so accessible driving motor 6 drive screw 7 rotates, so makes mirror sleeve 8 remove along screw 7, the operation of being convenient for.

As shown in fig. 1 to 5, in some embodiments of the present invention, the driving motor further includes a limiting plate 9, one end of the limiting plate 9 is disposed on the driving motor 6, and the other end of the limiting plate 9 is disposed on a mounting plate 10; one end of the screw 7, which is far from the driving motor 6, is rotatably provided on the mounting plate 10.

According to the invention, the mounting plate 10 is arranged, so that the screw 7 is convenient to mount, and the screw 7 rotates more stably after being mounted.

As shown in fig. 1 to 5, in some embodiments of the present invention, the side wall of the mirror sleeve 8 close to the position limiting plate 9 is flat and abuts against the position limiting plate 9.

According to the invention, the side wall of the mirror sleeve 8 close to the limit plate 9 is a plane and is abutted against the limit plate 9, so that in the process that the mirror sleeve 8 slides along the screw 7, the mirror sleeve 8 is abutted against the limit plate 9, the mirror sleeve 8 is prevented from rotating relative to the screw 7, and the mirror sleeve 8 can only move along the screw 7.

As shown in fig. 1-5, in some embodiments of the present invention, an eyepiece 3 is disposed in the light-transmitting channel, and the eyepiece 3 is disposed in the housing 4; the objective lens 2 is provided between the eyepiece 3 and the prism 1.

According to the invention, by arranging the ocular 3, one opening of the light-transmitting channel can be sealed through the ocular 3, and the other opening of the light-transmitting channel is sealed through the prism 1, so that impurities such as external dust and the like are prevented from entering the light-transmitting channel to influence the imaging effect of the objective lens 2 and the prism 1.

As shown in fig. 1-5, in some embodiments of the present invention, the speaker module is an earphone 5, and the earphone 5 is electrically connected to the processor.

The invention sets the speaker module as the earphone 5, so that the user can conveniently wear the earphone 5 on the head for listening to the music and other related voice information.

As shown in fig. 1 to 5, in some embodiments of the present invention, the earphones 5 are two and oppositely disposed, a connecting rod 11 and a sliding rod 12 are disposed between any one of the earphones 5 and the housing 4, one end of the connecting rod 11 is connected to the earphones 5, and the connecting rod 11 is provided with a sliding hole 13; one end of the slide rod 12 is connected to the housing 4, and the other end of the slide rod 12 is slidably disposed in the slide hole 13.

The position of the headset 5 may be different when the headset 5 is worn by different users; according to the invention, the connecting rod 11 and the sliding rod 12 are arranged, and the other end of the sliding rod 12 is slidably arranged in the sliding hole 13, so that the sliding rod 12 can be slid according to different users to adjust the length between the connecting rod 11 and the sliding rod 12, and the earphone 5 can be conveniently worn at the ear position of the user. Optionally, a graduated scale is arranged on the sliding rod 12 of the present embodiment, so that the user can conveniently check the sliding distance.

As shown in fig. 1 to 5, in some embodiments of the present invention, a guide bar 14 is disposed in the slide hole 13, and the guide bar 14 is fixed to the connecting rod 11; the side wall of the sliding rod 12 is provided with a guide sliding chute 15 matched with the guide strip 14; the guide bar 14 is slidably disposed in the guide chute 15.

The invention is provided with the guide strip 14 and the guide chute 15; the guide bar 14 is slidably disposed in the guide sliding groove 15, so as to guide the sliding of the sliding rod 12, so that the sliding rod 12 can move along the extending direction of the guide bar 14, and the sliding rod 12 is prevented from deviating when sliding.

As shown in fig. 1-5, in some embodiments of the present invention, the sliding rod 12 is provided with a resilient limiting piece 16, and the side wall of the connecting rod 11 is provided with a plurality of limiting grooves 17 at intervals along the sliding direction of the sliding rod 12, which are engaged with the limiting piece 16; one end of the stopper piece 16 is fitted into the stopper groove 17.

According to the invention, the limiting piece 16 is arranged, so that after the sliding rod 12 slides to a proper position, one end of the limiting piece 16 is embedded into the corresponding limiting groove 17, and thus the limiting piece 16 prevents the sliding rod 12 from freely sliding, so that the sliding rod 12 can stably stay at the position. Because the limiting piece 16 has elasticity, when the sliding rod 12 needs to be moved, the user pulls or pushes the sliding rod 12 to deform the limiting piece 16 and move the limiting piece out of the limiting groove 17 at the position. Optionally, the limiting sheet 16 of this embodiment is a metal sheet, and the metal sheet has elasticity, so as to be conveniently restored after deformation.

As shown in fig. 1 to 5, in some embodiments of the present invention, the side wall of the stopper piece 16 adjacent to the stopper groove 17 is arc-shaped; the limiting sheet 16 is provided with a connecting sheet 18; the connecting piece 18 is fixed on the sliding rod 12 through the locking bolt 19.

According to the invention, the side wall of the limiting sheet 16 close to the limiting groove 17 is arc-shaped, so that the sliding of the limiting sheet 16 is facilitated, and the resistance force applied during the sliding is reduced. According to the invention, by arranging the connecting piece 18 and the locking bolt 19, the connecting piece 18 is conveniently fixed on the sliding rod 12 through the locking bolt 19, and further, the limiting piece 16 is conveniently installed.

In summary, the embodiment of the present invention provides a training apparatus for preventing eyesight, which includes a housing 4, wherein the housing 4 is provided with a light-transmitting channel penetrating through the housing 4, and the light-transmitting channel is provided with a prism 1 and an objective lens 2 at an interval; the prism 1 is a concave lens, the objective lens 2 is a convex lens, and the prism 1 is provided in the housing 4; the housing 4 is provided with a driving assembly for driving the objective lens 2 to reciprocate along the light-transmitting channel, and the objective lens 2 is arranged on the driving assembly; the housing 4 is provided with a power supply, a speaker module, a processor and a storage module, and the power supply, the speaker module, the storage module and the driving assembly are all electrically connected with the processor; the storage module is used for storing audio data and transmitting the audio data to the processor; the processor is used for receiving the audio data and transmitting the audio data to the loudspeaker module; the processor is used for controlling the driving component to drive the objective lens 2 to reciprocate along the light-transmitting channel; the loudspeaker module is used for receiving the audio data transmitted by the processor and sending out voice; the power supply is used for supplying electric energy.

During practical use, the shell 4 is worn on the head of a user, the prism 1 is close to the eyes of the user, the prism 1 is a concave lens, the objective lens 2 is a convex lens, light reflected by an external object passes through the light-transmitting channel and passes through the objective lens 2 to form an image on the prism 1, and the external object can be seen by the eyes of the user.

The user stares at an external object, the objective lens 2 is driven by the driving component to move back and forth along the light-transmitting channel, the focal length of the objective lens 2 is adjusted, the object seen by the user is imaged from clear to fuzzy and then clear, and the process is repeated in a circulating way, so that ciliary muscles and extraocular muscles of the user can be repeatedly exercised, the adjusting capability of the visual function of the eyes of the user is improved, and the myopia is effectively prevented; and the elasticity and the self-adjusting capability of ciliary muscles and crystalline lenses are recovered, so that the eyesight of the naked eyes of the myopic eye patient can be improved.

The power supply, the loud-speaking module, the storage module and the driving assembly are all electrically connected with the processor through the arrangement of the power supply, the loud-speaking module, the processor and the storage module; the processor is used for controlling the driving component to drive the objective lens 2 to reciprocate along the light-transmitting channel; the power supply is used for supplying electric energy. The storage module is used for storing audio data, such as related soothing music and the like. The audio data are transmitted to the processor, and the processor is used for receiving the audio data and transmitting the audio data to the loudspeaker module; the loudspeaking module is used for receiving the audio data transmitted by the processor and sending out voice, so that voice signals such as music and the like can be sent out, physical and mental relaxation of a user is guided through a sound wave healing technology, the psychological state is adjusted, physical and mental tension is relieved, positive belief is built in the brain of the user, dopamine secretion is enhanced, the increase of an axis of the eye is inhibited, and accordingly myopia is effectively prevented and controlled.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.