JPH0747059B2 - Electric ball striking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Object of the Invention (Field of Industrial Application) The present invention relates to a power transmission structure of an electric ball striking device for play.

(Prior Art) The content and configuration of the prior art will be described with reference to FIG. FIG. 6 is a schematic diagram of a main part configuration of an example of an electric ball striking device according to a conventional technique.

In this example, the electric motor 4 is used as a drive source, and the cam 16 fixed to the output shaft 4-1 of the electric motor 4 and the firing rod 1 are used.
A transmission pin 1-at the tip of an arm (1) 1-2 integrally formed with
3, the rotation of the output shaft 4-1 of the electric motor 4, in this example, CCW (counterclockwise) rotation, causes the arm (1) 1-2 around the launching rod support shaft 7, and hence the arm (1) 1-2. Since the integral firing rod 1 turns in the CW (clockwise) direction, the firing part 1-1 provided in the vicinity of the tip of the firing rod 1 is formed on a play panel (not shown). 10 (indicated by a broken line) is separated from the play ball 9 which was in contact with the elastic unit 1-1 as indicated by a broken line in the figure, and the rotation of the electric motor 4 further advances. At the same time when the transmission pin 1-3 is separated from the pressing surface 16-1 of the cam 16, the pulling force of the coil spring 14 connected to the tip of another arm (2) 1-4 integrally formed with the firing rod 1. As a result, the firing rod 1 and thus the repulsion section 1-1 instantly approaches the game ball 9 and repels it.

The firing frequency of the play ball 9 is determined by the rotation speed of the electric motor 4, but the impact force on the play ball 9 depends on the returning speed of the firing part 1-1, that is, the launch rod 1, as is apparent from the above-described operation. As a means for adjusting this, a tension adjusting knob 15 is fixedly disposed at one end of the coil spring 14.

In the configuration of this example, since power transmission for launching the game ball 9 is entirely based on mechanical connection, mutual arrangement of the respective parts is complicated, and adjustment of the relative relationship position becomes complicated. There were many points to be improved in the environmental influences such as vibration, shock and noise as a game machine, such as vibration from the player and impact from the launch rod 1 side being transmitted to each other.

(Problems to be Solved by the Invention) An object of the present invention is to obtain an electric ball striking device that simplifies the mechanism of power transmission and has high reliability, and can reduce the occurrence of vibration and impact.

(2) Configuration of the Invention (Means for Solving Problems) In the electric ball striking device of the present invention, a disc-shaped drive-side permanent magnet that is surface-polarized into multiple poles is fixed to its output shaft, It is possible to rotate as many driven permanent magnets that are magnetized as many poles as the driving permanent magnets so as to face the driving permanent magnets coaxially with each other with a gap therebetween. A yoke member made of a magnetic material is provided on one side, and the size of the gap between the two permanent magnets is arranged so as to be variable, and is either a separate member concentric with the driven side permanent magnet or the driven side yoke. A firing rod is integrally formed with the firing rod, and a magnetic shield member for adjusting the magnetic coupling force between the permanent magnet and the permanent magnet is inserted into and removed from the space between the permanent magnets.

(Operation) In the above-mentioned configuration, the drive side and the driven side have a non-contact structure, so that the configuration is simplified, and in addition, an effect such as a reduction in vibration, shock and noise is brought about.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional view showing a drive portion of an example of an electric ball striking device according to the present invention.

A drive side permanent magnet 2-1 having a yoke 3 is disposed and fixed to the output shaft 4-1 of the drive motor 4. On the other hand, the driven permanent magnet 2-2 has a yoke 3 on its back surface, and is rotatable by a bearing 6 mounted on a mounting plate 5 so as to face the driving permanent magnet 2-1 with a gap 8 therebetween. It is fixedly arranged on a rod support shaft 7 which is pivotally supported. The firing rod 1 is fixed to the rod support shaft 7 integrally with the driven permanent magnet 2-2.

The two permanent magnets 2-1 and 2-2 are arranged so that their magnetized surfaces face each other, but in the example shown in FIG. Side permanent magnet 2-1 N
The pole (S pole) attracts the S pole (N pole) of the driven side permanent magnet 2-2 to each other, and when the drive side permanent magnet 2-1 turns as the electric motor 4 rotates, it is driven by the action of the above-mentioned attraction force. The side permanent magnet 2-2 also rotates in synchronization.

FIG. 3 shows a state in which the power thus transmitted acts on the launch rod 1 and the game ball 9 which are integral with the driven side permanent magnet 2-2. The firing rod 1 is magnetized to the pole and is fixed between the N1 pole and the S1 pole, and the rod stopper 11 that limits the operating range of the firing rod 1 is located at a position approximately 60 degrees from the initial position of the firing rod 1. It is provided in.

When the drive-side permanent magnet 2-1 rotates according to the rotation of the electric motor 4, the driven-side permanent magnet 2-2 also moves in the same direction (see the same figure).
Therefore, the firing rod 1 also turns until it hits the rod stopper 11.

The state of this turning operation will be explained with reference to FIG. 4 as to the change in the relative relationship between the two permanent magnets. As described above, the launch rod 1 that hits the rod stopper 11 is rapidly reversed by the repulsive force of both permanent magnets. Then, it returns to the initial position, and the repulsion section 1-1 arranged near the tip thereof repels the game ball 9 accommodated in the end section of the launch rail 10. As described above, FIG. 4 shows how the two permanent magnets are magnetically interlocked with each other, and each shows an example in which 6 poles are magnetized.

The right side is the drive side permanent magnet 2-1 seen from the electric motor side.
Therefore, the magnetized surface is shown from the back.

On the other hand, the left side shows the driven side permanent magnet 2-2, which is a magnetized surface viewed from the front.

Each of (a) to (f) shows how the driven side permanent magnet 2-2 moves as the driving side permanent magnet 2-1 moves.

First, (a) shows each magnetic pole of the drive side permanent magnet 2-1 in the initial state.
The magnetic poles N and S and the magnetic poles S and N of the driven side permanent magnet 2-2 face each other at the same position so as to be attracted to each other.

As described above, the rotating direction of the drive-side permanent magnet 2-1 is CW rotation when viewed from the electric motor 4 side in the example, but in (b), the permanent magnet 2-1 is half the magnetic pole width, which is approximately 30 degrees. The permanent magnet 2-2 also turns in the CW direction by 30 degrees.

Further, in (c), the permanent magnet 2-2 also turns 30 degrees, and the permanent magnet 2-2 also turns in synchronization with the movement of the permanent magnet 2-1, but in this state, the permanent magnet 2-2 is fixed integrally with this. Since the firing rod 1 arranged hits the rod stopper 11, the CW is no more than this.
It cannot be turned in the direction and is forcibly stopped here without following the continuous operation of the permanent magnet 2-1.

(D) shows the state at the time when the change in this state is small, and although the permanent magnet 2-1 is further rotated 30 degrees in the CW direction, the permanent magnet 2-2 is at the position of (c). Is. Further, the permanent magnet 2-1 continues to rotate in the CW direction, and from (c), one pole of the magnetic pole is advanced by 60 degrees (e).
However, even in this state, since the firing rod 1 and the rod stopper 11 are in contact with each other, the permanent magnet 2-2 has both permanent magnets 2-2.
The positional deviation between -1 and 2-2 is equivalent to the magnetic pole width.
It becomes degree.

As shown in (e) and (e '), when reaching this point, the two permanent magnets 2-1 and 2-2 have the same poles facing each other and repel each other.

The drive side permanent magnet 2-1 continuously turns in the CW direction by the electric motor 4, but the driven side permanent magnet 2-2 is able to turn to either direction due to the repulsive force at the moment shown in (e). It is in a state.

However, the permanent magnet 2-2 cannot rotate in the CW direction because the firing rod 1 which is integral with the permanent magnet 2-2 is blocked by the rod stopper 11, and therefore the permanent magnet 2-1 continues to rotate and slightly goes too far as shown in (f). Then, the magnetic attraction force is instantaneously reversed by one magnetic pole, and the state returns to the state of (f '), that is, the initial state of (a).

Corresponding to the continuous rotation of the driving permanent magnet 2-1 in the same direction, the driven permanent magnet 2-2 repeats the reciprocating operation between the initial state and the rod stopper 11.

The abutment of the launch rod 1 to the rod stopper 11 resists the magnetic coupling of the permanent magnets 2-1 and 2-2.
The impact is much smaller than mechanical restraint.

In addition, FIG. 5 shows the drive side permanent magnet 2-1 and the driven side permanent magnet 2.
2 is an explanatory view of a means for adjusting the magnetic attraction force between the two permanent magnets, the distance L between the two permanent magnets may be changed, or the magnetic shield member 12 made of a magnetic material in the space 8 between the two permanent magnets. May be interposed.

The magnetic shield member 12 is arranged in parallel with the opposing surfaces of the permanent magnets 2-1 and 2-2, and the area of the insertion portion in the void 8 is changed to adjust the magnetic shield effect. Then, the coupling force between the permanent magnets 2-1 and 2-2 is increased or decreased.

As shown in the same figure, the magnetic flux Φ outside the range in which the magnetic shield member 12 is present always maintains the coupled state, whereas in the portion where the magnetic shield member 12 below is inserted, the magnetic shield Φ before and after the magnetic shield member 12 is inserted. The magnetic flux is shielded as shown by the solid and broken lines in the figure.

As described above, the strength of power transmission can be adjusted by increasing / decreasing the magnetic coupling by inserting / removing the magnetic shield member 12.

(3) Effects of the Invention Since the electric ball striking device of the present invention has the above-mentioned configuration, the mechanism of power transmission is simple and highly reliable, and the occurrence of vibrations and impacts can be reduced. There is.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part of an example of an electric ball striking device according to the present invention, and FIG. 2 is a perspective view showing a state in which a drive-side permanent magnet and a driven-side permanent magnet, which are power transmission components of the example, face each other. 3 and 4 are a sectional view (a) and a front view (b) showing the operation of the driven-side permanent magnet and the firing rod, and FIG. 4 is an explanatory view in which the interlocking state of both permanent magnets is disassembled into steps. FIG. 5 is an explanatory view of a means for adjusting the magnetic attraction force between both permanent magnets, and FIG. 6 is a schematic view of the main part configuration of an example of the prior art. DESCRIPTION OF SYMBOLS 1 ... Launching rod, 1-1 ... Ejecting part, 1-2 ... Arm (1), 1-
3 ... Transmission pin, 1-4 ... Arm (2), 2-1 ... Drive side permanent magnet, 2-2 ... Driven side permanent magnet, 3 ... Yoke, 4 ... Electric motor, 4-1 ... Output shaft, 5 ... Mounting Plate, 6 ... Bearing, 7 ... Rod support shaft, 8 ... Void, 9 ... Play ball, 10 ... Launch rail, 11 ... Rod stopper, 12 ... Magnetic shielding member, 13 ... Repulsion part stopper, 14 ... Coil spring, 15 ... Tension adjustment knob, 16 ... cam,
16-1 ... Pressing surface of cam.

Claims (5)

[Claims] 1. An electric ball striking machine for play having an electric motor and a launching rod connected to the electric motor, wherein an output shaft of the electric motor is a disk-shaped permanent drive side permanent magnet which is surface-polarized into multiple poles. The driven side permanent magnets are rotatably arranged in the same number as the driving side permanent magnets so that the magnets are fixed and the driving side permanent magnets are coaxially face-to-face with each other through a gap. An electric ball striking device is characterized in that the launching rod is fixedly arranged so as to be concentric with the driven side permanent magnet so as to be concentrically rotatable. 2. The electric ball striking device according to claim 1, wherein at least one of the driving-side and driven-side permanent magnets is provided with a yoke member made of a magnetic material. 3. The electric ball striking device according to claim 1, wherein the launch rod is integrally formed with the driven-side yoke member. 4. The position of at least one of the drive-side and driven-side permanent magnets is axially variable, and the size of the gap between the two is variable. The electric ball striking device according to the first to third aspects. 5. A magnetic shielding member made of a magnetic material is provided in a space between the drive-side and driven-side permanent magnets so as to be insertable and removable, and the magnetic shield is provided. The electric ball striking device according to item 4.