JPH0417142Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a tracking visual acuity training device, and particularly to a device for training visual acuity for tracking an object that is in continuous motion. It is.

Note that in this specification, the visual acuity for tracking an object that is in continuous motion is particularly referred to as tracking visual acuity.

(Prior art) A disk 1 as shown in FIG. 5 is provided, and a large number of black lines 2 are written on its outer circumferential surface as visual identification marks. Eye training devices that force people to stare at the black line 2 have already been used in the past. This method is used in fields such as ophthalmology as a method for measuring the strength of the tracking visual acuity of the eye, while the identification display such as the black line 2 moves in a fixed direction.

By the way, in the modern world of sports, especially in the field of ball games, training the eyes to follow the movement of the ball and training the eyesight to track the ball is a must in order to lead to an advantage in the ball game. This is something that must be done, and is essential training for athletes. However, if we take baseball as an example, the trajectory of the ball thrown by a pitcher is complex and diverse, and in order to develop tracking vision for this, it is necessary to use a conventional device that moves only in a certain direction with an identification display. However, it is impossible to achieve any effect.

(Problem to be solved by the invention) This invention was made to solve the above-mentioned problems of the prior art. The purpose of this invention is to provide a training device for tracking visual acuity that can be reproduced very easily and with great fidelity through a simple configuration.

(Means for Solving the Problems) As a means for solving the above problems, this invention is based on a disk that is forced to rotate together with the shaft around the axis by introducing rotational force from the outside to the shaft, and a circular disk. It has a bearing body that rotatably supports the shaft of the plate, and a joint handle for connecting the bearing body to a stationary base located below the bearing body, and the joint handle has a rotary drive body interposed in the middle. By introducing a driving force from the outside, it is possible to rotate the structure consisting of the disk, shaft, and bearing body located above the joint handle with respect to the stationary base, and also Due to its flexibility, the structure can be tilted or restored at any angle with respect to the stationary base, and visual identification can be made at approximately regular intervals on the outer circumferential surface of the disk. It is characterized in that the indication is written.

(Example) Next, an example of this invented device will be specifically described based on the drawings. FIGS. 1 to 4 show one embodiment of the invention, and numeral 3 denotes a disk, which is provided with a shaft 4, and is supported by a bearing body 5 on both sides of the shaft 4 so that the disk 3 and the shaft 4 can rotate. . Reference numeral 6 denotes a variable speed reduction motor, which is attached to the bearing body 5, and whose rotor is connected to one end of the shaft 4. When energized, rotational force is introduced into the shaft 4, thereby rotating the disc 3. Force rotation.

Reference numeral 7 denotes a joint handle, which has a bellows-like structure as a whole, thereby providing flexibility. 8 is a stationary base, and 9 is a variable speed reduction motor.
The joint handle 7 supports the disk 3, shaft 4, bearing body 5, and deceleration motor 6 located above it, and connects the structure made of these to the stationary base 8 below via the deceleration motor 9.

Due to this configuration, the flexibility of the joint handle 7 allows the structure to be tilted at an arbitrary angle with respect to the stationary base 8 or restored.
FIG. 3 shows the structure tilted in this manner.

In this embodiment, an example is shown in which the joint handle 7 is configured in a bellows-like manner over the entire length, thereby imparting flexibility through bending. Needless to say, it is possible to apply a structure that allows bending at the front and back of the structure, or other known bendable structures.

The deceleration motor 9 is interposed between the joint handle 7 and the stationary base 8, and can rotate the joint handle 7 and the above-mentioned structure located above it with respect to the stationary base 8 when energized. . FIG. 3 shows the rotation procedure.

On the outer peripheral surface 10 of the disk 3, white spheres 11 are drawn at approximately regular intervals as visual identification marks. The part of the empty space 12 other than the white ball 11 is painted dark black, so when the disk 3 is gently rotated in a certain direction, a state in which the white balls appear and disappear one after another is realized. By tracking with the gaze, it is possible to reproduce the action of the motor nerves of a baseball batter when he stands at bat and tries to determine the trajectory of the pitcher's pitched ball.

Reference numeral 13 denotes a control stand on which a power on/off switch 14 and control handles 15 and 16 for the deceleration motors 6 and 9, respectively, are arranged.

The operation of the present device having the above configuration will be explained. First, the training target for tracking visual acuity was trained using the disc 3.
A of the disc 3 is placed at an appropriate distance along the radial direction, then the switch 14 of the control stand 13 is turned on, and the control handle 15 is then used to move the disc 3 to the A position.
Start the rotation in the direction of the arrow (or the direction of the A' arrow) and adjust the rotation speed, or use the control handle 16 to start the rotation of the joint 7 in the direction of the B arrow (or
Start the rotation (in the direction of the arrow B') and adjust the rotation speed.

The control handles 15 and 16 can be operated individually or together, depending on the situation. FIG. 4 shows the operation when the two handles are operated simultaneously with the upper part of the joint handle 7 tilted by an angle θ, and as a result, the locus of movement of the white ball 11 is The movement in the direction of arrow A and the movement in the direction of arrow B are combined to manifest a locus of movement indicated by arrow P. In baseball pitching, this corresponds to the trajectory of a pitch with a left curve, and is suitable for training the tracking visual acuity for hitting pitches with a left curve. Of course, in order to manifest such a state of motion of the white ball,
Appropriate interlocking adjustment between the control handles 15 and 16 is necessary, but according to the device of the present invention, such adjustment is fully possible and can be achieved by the method of realizing the left-curve trajectory described above. , and a wide range of other ball motion trajectories can be easily realized. Moreover, A
By appropriately combining the rotational speeds of the arrows (and A') and B (and B') in their respective directions,
It is also possible to conduct training for pitching by a particular pitcher.

FIG. 5 shows another embodiment in which the identification mark on the outer peripheral surface of the disk is indicated by a black line 2. Furthermore, FIG. 6 is an explanatory diagram regarding training of the tracking visual acuity to track the black line 2 when the black line 2 is moved in the direction of the arrow A in the figure. In order to perceive this with visual acuity, the eye must move not in the direction of arrow A, but in the direction opposite to arrow A, that is, in the direction of arrow d. By moving, the relative speed of movement of the black line becomes [speed in the direction of arrow A due to the rotation of the disk] - [speed of eye movement in the direction of arrow d], and the black line moves according to visual acuity. 2 becomes easier to understand. To this end, as shown in the figure, the above object can be achieved by rotating the entire face in the direction of arrow D, which is the opposite direction to arrow A.

(Effect of the invention) Since the tracking visual acuity training device according to this invention is constructed as described above, it is extremely easy to combine the speed of movement of the ball in ball games, etc. and all kinds of trajectories of movement. It can be reproduced accurately and with great fidelity, and is highly effective in training tracking visual acuity.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the proposed device, Fig. 2 is a front view of its main parts, Fig. 3 is a front view for explaining the action of the main parts, and Fig. 4 is the action of the proposed device. FIG. 5 is a perspective view of the essential parts of another embodiment of the present device, and FIG. 6 is an explanatory diagram of the effect of the example shown in FIG. 1, 3... Disc, 2... Black line, 4... Axis, 5...
... Bearing body, 6, 9 ... Deceleration motor, 7 ... Joint handle, 8 ... Stationary base, 10 ... Outer peripheral surface, 11 ...
White ball, 12... Blank space, 13... Control stand, 1
4... Switch, 15, 16... Control handle.

Claims (1)

[Scope of utility model registration request] A disc that is forced to rotate together with the shaft around the axis by applying a rotational force to the shaft from the outside; a bearing body that rotatably supports the shaft of the disc; and the bearing body is located below the bearing body. The joint handle is provided with a joint handle for connecting to a stationary base, and the joint handle has a rotary drive body interposed in the middle, and by introducing driving power from the outside, the above-mentioned disk and shaft located above the joint handle are provided. In addition, the structure made of the bearing body can be rotated relative to the stationary base, and the flexibility of the joint allows the structure to be tilted at any angle relative to the stationary base or restored. A tracking visual acuity training device, characterized in that visual identification marks are written on the outer peripheral surface of the disk at approximately regular intervals.