阅读说明：本技术 一种可提高调节能力的直线训练仪 (Can improve straight line training appearance of regulating power ) 是由 孙熠 张翠兰 肖祥伦 于 2021-06-28 设计创作，主要内容包括：本发明提供一种可提高调节能力的直线训练仪,涉及眼部训练技术领域。该可提高调节能力的直线训练仪,包括：固定架,所述固定架的底部四角固定安装有万向轮,所述固定架的内部固定安装有支撑板,所述支撑板的顶部固定安装有两个平行对称的限位器,触控屏幕控制正反调速电机,正反调速电机带动主皮带轮进行旋转,皮带在旋转的时候,通过滑杆带动杆带动滑杆进行旋转,使滑杆带动上侧滑轮和侧边滑轮在限位框的内部滑动,滑杆带动屏幕支架套筒进行移动,使移动移动标靶屏可以来回进行快慢、停顿和反向的往复移动,解决了标靶往复运动靠传感器传输信号,控制电机正反转,传感器本身和电机成本和要求较高,且容易出现故障的问题。(The invention provides a linear training instrument capable of improving adjusting capacity, and relates to the technical field of eye training. This can improve straight line training appearance of regulating power includes: the mount, the bottom four corners fixed mounting of mount has the universal wheel, the inside fixed mounting of mount has the backup pad, the top fixed mounting of backup pad has the stopper of two parallel symmetries, touch-control screen control positive and negative adjustable speed motor, positive and negative adjustable speed motor drives the main belt pulley and rotates, the belt is in rotatory time, it rotates to drive the pole through the slide bar, make the slide bar drive upside pulley and the inside slip of side pulley at spacing frame, the slide bar drives screen support sleeve and removes, it is fast and slow to make the removal to move the target screen and can make a round trip, pause and reverse reciprocating motion, target reciprocating motion has been solved and has leaned on sensor transmission signal, control motor is just reversing, sensor itself and motor cost are higher with the requirement, and the problem that breaks down easily.)

1. A linear training instrument capable of improving adjusting capacity is characterized by comprising: the lifting mechanism comprises a fixing frame (1), universal wheels (2) are fixedly mounted at four corners of the bottom of the fixing frame (1), a supporting plate (3) is fixedly mounted inside the fixing frame (1), two parallel and symmetrical limiting devices (4) are fixedly mounted at the top of the supporting plate (3), lifting mechanisms (5) are slidably connected inside the two limiting devices (4), a lifting frame (6) is slidably connected at the top of the lifting mechanism (5), a linear main machine (7) is fixedly mounted at the top of the lifting frame (6), and a distance adjusting assembly (8) is fixedly mounted on the linear main machine (7);

the straight line host (7) comprises a host shell (701) fixedly installed at the top of the lifting frame (6), a motor fixing plate (702) is fixedly installed at the bottom of the inner wall of the host shell (701), a positive and negative speed regulating motor (713) is fixedly installed on one side of the motor fixing plate (702) through screws, an auxiliary belt pulley installation fixing rod (705) is fixedly installed at the bottom of the inner wall of the host shell (701), two auxiliary belt pulley installation fixing rods (705) are rotatably connected with the top of the auxiliary belt pulley installation fixing rod (705) through a bearing (704) to form an auxiliary belt pulley (707), a main belt pulley (703) is fixedly installed at the output end of the positive and negative speed regulating motor (713), the main belt pulley (703) is in transmission connection with the two auxiliary belt pulleys (707) through a belt (718), a slide bar driving rod (708) is fixedly installed at the top of the belt (718), a slide bar (709) is fixedly installed at the top of the slide bar driving rod (708), the top swivelling joint of slide bar (709) has upside pulley (715), the equal swivelling joint in both sides of slide bar (709) has side pulley (716), the top fixed mounting of slide bar (709) has screen support sleeve (717), the outside cover of screen support sleeve (717) is equipped with slide bar linking bridge (710), the top fixed mounting of slide bar linking bridge (710) has mobile target screen (711), one side fixed mounting of host computer shell (701) has device frame (712), the positive fixed surface of host computer shell (701) installs touch screen (714), the bottom fixed mounting of host computer shell (701) inner wall has pulley backing plate (706), the equal fixed mounting in both sides of host computer shell (701) inner wall has spacing frame (719).

2. The linear trainer capable of improving adjustability according to claim 1, wherein: elevating system (5) are including sliding connection at inside hand cranking bar (501) of two stopper (4), two sections opposite thread groove of screw thread are seted up to the surface of hand cranking bar (501), and the equal threaded connection in surface of two thread grooves has threaded sleeve (502), two the equal fixed mounting in both sides of threaded sleeve (502) has connecting rod (503), four the surface swivelling joint of connecting rod (503) has last alternately lifting arm (504), four the one end swivelling joint that threaded sleeve (502) was kept away from in connecting rod (503) has lower alternately lifting arm (505), go up alternately lifting arm (504) and lower alternately lifting arm (505) keep away from the equal swivelling joint in one end of threaded sleeve (502) has top wheel (506).

3. The linear trainer capable of improving adjustability according to claim 1, wherein: the movable target screen (711) comprises a U-shaped frame (7112) arranged at the top of the sliding rod connecting support (710), a liquid crystal display screen (7114) is rotatably connected inside the U-shaped frame (7112) through an elastic knob (7113), and a central target (7111) is marked on one side of the liquid crystal display screen (7114).

4. The linear trainer capable of improving adjustability according to claim 1, wherein: the top of the host shell (701) is fixedly provided with an upper machine cover, the center of the upper machine cover is provided with a strip-shaped through hole matched with the motion trail of the sliding rod connecting support (710), and the rear side of the host shell (701) is provided with a heat dissipation hole.

5. The linear trainer capable of improving adjustability according to claim 1, wherein: the sliding rod (709) is connected inside the limiting frame (719) in a sliding mode, the top of the upper side pulley (715) is connected with the top of the inner wall of the limiting frame (719) in a sliding mode, and the side pulley (716) is connected with one side of the inner wall of the limiting frame (719) in a sliding mode.

6. The linear trainer capable of improving adjustability according to claim 2, wherein: the four corners of the bottom of the lifting frame (6) are slidably inserted into the four corners of the top of the fixing frame (1), a lifting arm pulley groove matched with the top wheel (506) is formed in the lifting frame (6), and the top wheel (506) is slidably connected to the top of the supporting plate (3) at the bottom.

7. The linear trainer capable of improving adjustability according to claim 2, wherein: hand rocking bar (501) extend to the outside of mount (1), two all set up the waist shape through-hole with hand rocking bar (501) looks adaptation on stopper (4).

8. The linear trainer capable of improving adjustability according to claim 1, wherein: the distance adjusting assembly (8) is fixedly arranged on the device frame (712).

Technical Field

The invention relates to the technical field of eye training, in particular to a linear training instrument capable of improving the adjusting capacity.

Background

A linear training instrument capable of improving the adjusting capacity is characterized in that the eyeball generates inward rotation motion and outward rotation motion through the linear motion, slow and fast movement and stopping of a target among different visual distance points, so that the effects of strengthening eye muscles and improving the adjusting capacity are achieved. Through the auxiliary means and the focusing stimulation of the red light viewpoint, the photosensitive acuity of the retina is greatly improved, the optimal eye using track is constructed aiming at the strabismus and the heterophoria and the prism training mirror, and the symptom of the deviation of the eye position can be quickly changed.

The existing straight line training instrument capable of improving the adjusting capacity mainly has the following problems: the reciprocating motion of the target is realized by transmitting signals through the sensor to control the motor to rotate positively and negatively, the cost and the requirement of the sensor and the motor are high, and the fault is easy to occur.

Disclosure of Invention

The invention aims to provide a linear training instrument capable of improving the adjusting capacity, and solves the problems that in the background technology, the reciprocating motion of a target is realized by a sensor to transmit signals, the positive and negative rotation of a motor is controlled, the cost and the requirement of the sensor and the motor are high, and faults are easy to occur.

In order to achieve the purpose, the invention is realized by the following technical scheme: a linear trainer capable of improving adjustability, comprising: the lifting mechanism comprises a fixing frame, universal wheels are fixedly mounted at four corners of the bottom of the fixing frame, a supporting plate is fixedly mounted inside the fixing frame, two parallel and symmetrical limiting devices are fixedly mounted at the top of the supporting plate, lifting mechanisms are slidably connected inside the two limiting devices, a lifting frame is slidably connected at the top of the lifting mechanism, a linear main machine is fixedly mounted at the top of the lifting frame, and a distance adjusting assembly is fixedly mounted on the linear main machine;

the linear host comprises a host shell fixedly arranged at the top of the lifting frame, a motor fixing plate is fixedly arranged at the bottom of the inner wall of the host shell, a forward and reverse speed regulating motor is fixedly arranged at one side of the motor fixing plate through screws, auxiliary belt pulley mounting fixing rods are fixedly arranged at the bottom of the inner wall of the host shell, the tops of the two auxiliary belt pulley mounting fixing rods are rotatably connected with auxiliary belt pulleys through bearings, a main belt pulley is fixedly arranged at the output end of the forward and reverse speed regulating motor and is connected with the two auxiliary belt pulleys through belt transmission, a slide bar driving rod is fixedly arranged at the top of the belt, a slide bar is fixedly arranged at the top of the slide bar driving rod, an upper side pulley is rotatably connected at the top of the slide bar, side pulleys are rotatably connected at two sides of the slide bar, and a screen support sleeve is fixedly arranged at the top of the slide bar, the telescopic outside cover of screen support is equipped with the slide bar linking bridge, the top fixed mounting of slide bar linking bridge has the removal target screen, one side fixed mounting of host computer shell has the device frame, the positive fixed surface of host computer shell installs the touch screen, the bottom fixed mounting of host computer shell inner wall has the pulley backing plate, the equal fixed mounting in both sides of host computer shell inner wall has spacing frame.

Adopt above-mentioned technical scheme: the speed and the frequency of the positive and negative rotation are adjusted on the positive and negative speed regulating motor, when a switch is turned on through a touch screen, the touch screen controls the rotation speed, the positive and negative rotation or the negative rotation of the positive and negative speed regulating motor and sets the running time and the pause time of the positive and negative speed regulating motor, the positive and negative speed regulating motor drives a main belt pulley to rotate, the positive and negative speed regulating motor is electrically connected with the touch screen, the main belt pulley drives two auxiliary belt pulleys to rotate through a belt, the two auxiliary belt pulleys rotate on an auxiliary belt pulley mounting fixed rod through a bearing, when the belt rotates, the slide bar is driven by the slide bar driving rod to drive the slide bar to rotate, the slide bar drives the upper side pulley and the side pulley to slide in the limiting frame, friction is reduced, the slide bar is smooth to slide, the slide bar drives the screen support sleeve to move, and the moving target screen can move back and forth to perform fast and slow movement, pause movement and reverse reciprocating movement.

Further, elevating system includes the inside hand pole of sliding connection at two stoppers, two sections opposite thread groove of screw thread are seted up to the surface of hand pole, and the equal threaded connection in surface of two thread grooves has the thread bush, two the equal fixed mounting in thread bush's both sides has a connecting rod, four the surface swivelling joint of connecting rod has upper crisscross lifting arm, four the one end swivelling joint that the thread bush was kept away from to the connecting rod has lower crisscross lifting arm, the upper crisscross lifting arm has the top wheel with the equal swivelling joint of the one end that the thread bush was kept away from to lower crisscross lifting arm.

Adopt above-mentioned technical scheme: when adjusting the height, rotatory hand rocker, hand rocker drives the thread groove and rotates, hand rocker is spacing in the inside of stopper, hand rocker can only reciprocate, the thread groove drives two screw sleeve and removes, make screw sleeve drive the criss-cross lifting arm and expand with criss-cross lifting arm down, hand rocker removes in the inside of stopper simultaneously, when criss-cross lifting arm and criss-cross lifting arm expand, the inside in the lifting arm pulley groove of seting up in the inside of lifting frame is slided to the top wheel on the criss-cross lifting arm on the upper surface, the top wheel on the criss-cross lifting arm slides at the top of backup pad down, make the lifting frame remove, make sharp host computer remove, make the roll adjustment assembly remove.

Furthermore, the mobile target screen comprises a U-shaped frame arranged at the top of the sliding rod connecting support, the inside of the U-shaped frame is rotatably connected with a liquid crystal display screen through an elastic knob, and one side of the liquid crystal display screen is marked with a center staring target.

Adopt above-mentioned technical scheme: the mobile target screen comprises a U-shaped frame arranged at the top of the sliding rod connecting support, the inside of the U-shaped frame is rotatably connected with a liquid crystal display screen through an elastic knob, and one side of the liquid crystal display screen is marked with a center staring target.

Further, the top of the host shell is fixedly provided with an upper cover, the center of the upper cover is provided with a strip-shaped through hole matched with the motion trail of the sliding rod connecting support, and the rear side of the host shell is provided with a heat dissipation hole.

Adopt above-mentioned technical scheme: the sliding rod connecting support can slide on the upper cover at the top of the host shell, and the host can be lowered to dissipate heat.

Furthermore, the slide bar is connected inside the limiting frame in a sliding mode, the top of the upper side pulley is connected with the top of the inner wall of the limiting frame in a sliding mode, and the side pulley is connected with one side of the inner wall of the limiting frame in a sliding mode.

Adopt above-mentioned technical scheme: the slide bar drives the pole and drives the slide bar and rotate, makes the slide bar drive upside pulley and side pulley and slide in the inside of spacing frame, reduces the friction, lets the gliding more smooth of slide bar.

Furthermore, the four corners of the bottom of the lifting frame are slidably inserted into the four corners of the top of the fixing frame, a lifting arm pulley groove matched with the top wheel is formed in the lifting frame, and the top wheel is slidably connected to the top of the supporting plate at the bottom.

Adopt above-mentioned technical scheme: the lifting frame is limited at the top of the fixing frame, and the top wheel can reduce friction, so that the lifting frame is smoother.

Further, the hand rocking rod extends to the outside of mount, two all set up the waist shape through-hole with hand rocking rod looks adaptation on the stopper.

Adopt above-mentioned technical scheme: the hand-operated rod is rotated, the hand-operated rod drives the thread groove to rotate, and the hand-operated rod is limited in the limiter.

Furthermore, the distance adjusting assembly is fixedly arranged on the device frame.

The invention provides a linear training instrument capable of improving the adjusting capacity. The method has the following beneficial effects:

when the speed and the frequency of positive and negative rotation are adjusted on the positive and negative speed regulating motor, when a switch is opened through a touch screen, the touch screen controls the rotating speed of the positive and negative speed regulating motor, the positive and negative speed regulating motor rotates positively or reversely and sets the running time and the pause time of the positive and negative speed regulating motor, the positive and negative speed regulating motor drives the main belt pulley to rotate, the positive and negative speed regulating motor is electrically connected with the touch screen, the main belt pulley drives the two auxiliary belt pulleys to rotate through a belt, the two auxiliary belt pulleys rotate on the auxiliary belt pulley mounting fixing rod through a bearing, when the belt rotates, the slide rod is driven by the slide rod to rotate, the slide rod drives the upper side pulley and the side pulley to slide in the limiting frame, the friction is reduced, the slide rod slides more smoothly, the slide rod drives the screen support sleeve to move, and the moving target screen can move back and forth, The reciprocating motion of pause and reverse direction solves the problems that the reciprocating motion of the target depends on the sensor to transmit signals, the motor is controlled to rotate forward and backward, the cost and the requirement of the sensor and the motor are high, and faults are easy to occur;

when adjusting the height, the hand rocker rotates, the hand rocker drives the thread groove to rotate, the hand rocker is limited in the stopper, the hand rocker can only move up and down, the thread groove drives two thread sleeves to move, the thread sleeves drive the upper cross lifting arm and the lower cross lifting arm to expand, the hand rocker simultaneously moves in the stopper, when the upper cross lifting arm and the lower cross lifting arm expand, the top wheel on the upper cross lifting arm slides in the lifting arm pulley groove formed in the lifting frame, the top wheel on the lower cross lifting arm slides at the top of the supporting plate, the lifting frame moves, the linear host moves, the distance adjusting assembly moves, the height of a user can be adjusted according to the height, a stool does not need to be exchanged during adjustment, only the hand rocker needs to be rotated, and the operation is simple, convenient and rapid.

Liquid crystal display can positive and negative two sides rotation, openly can play and set for the picture, move picture and video, can insert USB and copy and transmit audio frequency and video file and play, the reverse side is pure physical design, when need not use specific picture, with its rotation can, this mark target screen main function is the object of catching when as eyes training, make eyes follow its removal and reach the training effect, when rotatory, not hard up elasticity knob, rotatory U-shaped frame, make the U-shaped frame rotatory in the inside of U-shaped frame, after the rotation is accomplished, screw up the elasticity knob and fix liquid crystal display.

Description of the drawings:

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the lift mechanism of the present invention;

FIG. 3 is a side perspective view of the mount of the present invention;

FIG. 4 is a schematic diagram of the internal structure of the linear host according to the present invention;

FIG. 5 is a schematic view of the connection of the slide bar drive rod and the slide bar of the present invention;

FIG. 6 is a schematic view of the internal structure of the connecting device of the present invention;

FIG. 7 is a perspective view of a moving target screen of the present invention;

FIG. 8 is a front perspective view of the present invention;

fig. 9 is a perspective view of the stopper of the present invention.

1. A fixed mount; 2. a universal wheel; 3. a support plate; 4. a stopper; 5. a lifting mechanism; 501. a hand lever; 502. a threaded sleeve; 503. a connecting rod; 504. an upper cross lift arm; 505. a lower cross lift arm; 506. a top wheel; 6. a lifting frame; 7. a linear host; 701. a host housing; 702. a motor fixing plate; 703. a primary pulley; 704. a bearing; 705. the auxiliary belt pulley is provided with a fixed rod; 706. a pulley backing plate; 707. an auxiliary belt pulley; 708. the sliding rod drives the rod; 709. a slide bar; 710. the sliding rod is connected with the bracket; 711. moving the target screen; 7111. center staring; 7112. a U-shaped frame; 7113. tightening and loosening the knob; 7114. a liquid crystal display screen; 712. a device frame; 713. a positive and negative speed regulating motor; 714. a touch screen; 715. an upper side pulley; 716. side pulleys; 717. a screen support sleeve; 718. a belt; 719. a limiting frame; 8. the roll adjustment assembly.

Detailed Description

As shown in fig. 1 and fig. 3, 8 and 9: a linear trainer capable of improving adjustability, comprising: the device comprises a fixed frame 1, universal wheels 2 are fixedly installed at four corners of the bottom of the fixed frame 1, a supporting plate 3 is fixedly installed inside the fixed frame 1, two parallel and symmetrical limiting devices 4 are fixedly installed at the top of the supporting plate 3, lifting mechanisms 5 are slidably connected inside the two limiting devices 4, lifting frames 6 are slidably connected to the tops of the lifting mechanisms 5, a linear main machine 7 is fixedly installed at the tops of the lifting frames 6, and a distance adjusting assembly 8 is fixedly installed on the linear main machine 7;

when the training device is used, a teenager user places eyes on the distance adjusting assembly 8, the degree and the pupil distance suitable for the teenager user are adjusted according to the myopia degree and the pupil distance of the teenager user, the user can see the target clearly, the switch of the linear host 7 is turned on, and training is started.

As shown in fig. 4-6: the linear main engine 7 comprises a main engine shell 701 fixedly installed at the top of the lifting frame 6, a motor fixing plate 702 is fixedly installed at the bottom of the inner wall of the main engine shell 701, a forward and reverse speed regulating motor 713 is fixedly installed at one side of the motor fixing plate 702 through screws, an auxiliary belt pulley installation fixing rod 705 is fixedly installed at the bottom of the inner wall of the main engine shell 701, the tops of the two auxiliary belt pulley installation fixing rods 705 are rotatably connected with an auxiliary belt pulley 707 through a bearing 704, a main belt pulley 703 is fixedly installed at the output end of the forward and reverse speed regulating motor 713, the main belt pulley 703 is in transmission connection with the two auxiliary belt pulleys 707 through a belt 718, a slide bar driving rod 708 is fixedly installed at the top of the belt 718, a slide bar 709 is fixedly installed at the top of the slide bar driving rod 708, an upper side pulley 715 is rotatably connected at the top of the slide bar 709, side pulleys 716 are rotatably connected at two sides of the slide bar 709, and a screen support sleeve 717 is fixedly installed at the top of the slide bar 709, a sliding rod connecting support 710 is sleeved on the outer side of the screen support sleeve 717, a movable target screen 711 is fixedly installed on the top of the sliding rod connecting support 710, a device frame 712 is fixedly installed on one side of the main machine shell 701, a touch screen 714 is fixedly installed on the front surface of the main machine shell 701, a belt pulley backing plate 706 is fixedly installed on the bottom of the inner wall of the main machine shell 701, limiting frames 719 are fixedly installed on both sides of the inner wall of the main machine shell 701, an upper machine cover is fixedly installed on the top of the main machine shell 701, and the center of the upper cover is provided with a bar-shaped through hole matched with the motion trail of the sliding rod connecting support 710, the rear side of the host shell 701 is provided with a heat dissipation hole, a sliding rod 709 is connected inside the limiting frame 719 in a sliding manner, the top of the upper pulley 715 is connected with the top of the inner wall of the limiting frame 719 in a sliding manner, a side pulley 716 is connected with one side of the inner wall of the limiting frame 719 in a sliding manner, and the distance adjusting assembly 8 is fixedly mounted on the device frame 712.

When the speed and the frequency of forward and reverse rotation are adjusted on the forward and reverse speed regulation motor 713, when the switch is turned on through the touch screen 714, the touch screen 714 controls the rotation speed, forward rotation or reverse rotation of the forward and reverse speed regulation motor 713 and sets the operation time and the pause time of the forward and reverse speed regulation motor 713, the forward and reverse speed regulation motor 713 drives the main belt pulley 703 to rotate, the forward and reverse speed regulation motor 713 is electrically connected with the touch screen 714, the main belt pulley 703 drives the two auxiliary belt pulleys 707 to rotate through the belt 718, the two auxiliary belt pulleys 707 rotate on the auxiliary belt pulley mounting fixing rod 705 through the bearing 704, when the belt 718 rotates, the slide bar 708 drives the slide bar 709 to rotate through the slide bar, so that the slide bar 709 drives the upper side pulley 715 and the side pulley 716 to slide inside the limit frame 719, friction is reduced, the slide bar 709 slides more smoothly, and the screen support sleeve 717 is driven by the slide bar 709 to move, the moving target screen 711 can move back and forth in fast, slow, pause and reverse directions.

As shown in fig. 1, the lifting mechanism 5 includes a hand lever 501 slidably connected inside the two stoppers 4, two thread grooves with opposite threads are formed in the outer surface of the hand lever 501, the outer surfaces of the two thread grooves are both connected with a thread sleeve 502, connecting rods 503 are fixedly mounted on both sides of the two thread sleeves 502, the outer surfaces of the four connecting rods 503 are rotatably connected with upper crossed lifting arms 504, one ends of the four connecting rods 503 far away from the thread sleeve 502 are rotatably connected with lower crossed lifting arms 505, one ends of the upper crossed lifting arms 504 and one ends of the lower crossed lifting arms 505 far away from the thread sleeve 502 are both rotatably connected with top wheels 506, the hand lever 501 extends to the outside of the fixing frame 1, and waist-shaped through holes matched with the hand lever 501 are formed in the two stoppers 4.

When the height is adjusted, the hand rocker 501 is rotated, the hand rocker 501 drives the threaded groove to rotate, the hand rocker 501 is limited in the limiter 4, the hand rocker 501 only can move up and down, the threaded groove drives the two threaded sleeves 502 to move, the threaded sleeves 502 drive the upper cross lifting arm 504 and the lower cross lifting arm 505 to expand, the hand rocker 501 simultaneously moves in the limiter 4, when the upper cross lifting arm 504 and the lower cross lifting arm 505 expand, the top wheel 506 on the upper cross lifting arm 504 slides in the lifting arm pulley groove formed in the lifting frame 6, the top wheel 506 on the lower cross lifting arm 505 slides at the top of the supporting plate 3, the lifting frame 6 moves, the linear main engine 7 moves, and the distance adjusting assembly 8 moves.

The movable target screen 711 comprises a U-shaped frame 7112 installed at the top of the sliding rod connecting bracket 710, a liquid crystal display screen 7114 is rotatably connected inside the U-shaped frame 7112 through a tightening knob 7113, and a central target 7111 is marked at one side of the liquid crystal display screen 7114.

As shown in fig. 7, the lcd 7114 can be rotated in both sides, the front side can play setting pictures, motion pictures and videos, the USB can be inserted to copy and transmit audio and video files, the back side is a pure physical design, when no specific picture is needed, the picture can be rotated, the main function of the target screen is as an object captured during eye training, the eyes can move along with the picture to achieve the training effect, when the picture is rotated, the tightening and loosening knob 7113 is loosened, the U-shaped frame 7112 is rotated inside the U-shaped frame 7112, and after the rotation is completed, the tightening and loosening knob 7113 is tightened to fix the lcd 7114.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.