JP2683670B2 - Bowling ball thumb punch - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a thumb-pulling device for a bowling ball, which can always be pulled out from a thumb hole at a constant timing when the bowling ball is thrown. Is.

(Prior Art) It is important to remove the thumb when the bowling ball is thrown, and the timing of this removal has a great influence on the rotation and speed of the ball. Of course, it is very difficult for the same person to pull out his thumb at a certain timing.
In addition, when you consume a large number of games for a long time, your thumb will swell (when it is terrible, the skin will be rolled up), catching, etc. will occur and it will affect the delicate timing. Adhere tape etc. to the inner wall and peel off the tape etc. according to the swelling or shave it so that it is not caught as much as possible, or stick an elastic body such as rubber to the inner wall of the ball hole and throw At times, it is designed to prevent swelling by reducing the burden on the thumb.

(Problems to be Solved by the Invention) However, it is very troublesome to attach a tape or the like to the inner wall of the ball hole and appropriately adjust it according to the degree of swelling of the thumb because it is performed during the game. However, if you adjust it incorrectly, you may lose the delicate feeling and destroy the score.Also, even if you protect the thumb by fixing rubber etc. to the inner wall of the hole, the feel of the thumb is soft. It was difficult to get a certain timing. Further, as mentioned above, even if the thumb is in a normal state, it is difficult to pull out the thumb at a constant timing when the same person pitches, and it is difficult to remove the thumb at a certain timing with considerable practice. Although you can acquire the technique to pull out with,
Since most of this timing is natural, the ball separation in the optimal state was not something that can be obtained by practice.

The present invention has been made in view of the above points, and a thumb of a bowling ball having a function of allowing the thumb (or one that is inserted into a finger hole instead of the thumb) to drop out at a certain timing without damaging the thumb. An object is to provide a removing device.

(Means for Solving the Problem) The gist of the present invention for achieving the above object is to attach a sensor (3) to the dominant arm, which constantly detects the swinging direction and angle of the arm and operates according to a set angle. A cover body (1) or a thumb substitute (8) to be attached to the thumb so that the thumb or a substitute for the thumb inserted into the thumb hole of the bowling ball (4) in association with the sensor (3) may come out of the thumb hole. Further, there is provided a device for removing the thumb of a bowling ball, which is provided with a detaching means interlocking with the sensor in the thumb hole portion.

(Operation) As described above, the thumb-pulling device for bowling balls of the present invention is
The sensor (3) attached to the dominant arm is set to operate at the arm angle (substantially vertical) that is the optimum timing for pulling out the thumb and when the arm is swung down forward, the thumb ( Insert the cover body (1) or thumb replacement (8) into the thumb hole of the bowling ball and insert the other middle finger,
If the ball is thrown with the ring finger inserted in each hole, the sensor (3) will be used even when the arm is swung backwards at the same angle.
Is not activated, and the sensor (3) is activated only when the arm raised next is swung down to reach the angle, and the cover body (1) attached to the thumb (or a substitute for the thumb (8)) and the thumb are attached. The cover body (1) (or the substitute for the thumb (8)) will automatically come out of the thumb hole of the bowling ball (4) in conjunction with the detaching means provided in the hole portion, and always at the optimum timing. You can skip the thumb. Also, sucker (1
0) can be used to allow the thumb to easily slip out of the thumb hole, that is, the suction cup (10) fixed to the arm side is adsorbed on the surface of the bowling ball (4), The sucker (10) is attached to the surface of the bowling ball behind the thumb hole and holds the bowling ball together with the middle finger and the ring finger. It is in a state of just being there. In this state, the ball is thrown, and when the sensor (3) is operated, that is, when the air is released, the suction force is lost due to the air being sent into the suction cup, so that the suction cup (10) is detached from the bowling ball surface, which causes the thumb to move. The thumb in the hole will also come out of the thumb hole naturally, and you can easily pull out the thumb from the thumb hole without removing the timing of releasing the thumb. (In this case, since the bowling ball is firmly held by the sucker (10), the middle finger, and the ring finger, it is possible to throw the ball without putting the thumb in the thumb hole, and the same timing as when the thumb comes out. Since the sucker (10) separates from the bowling ball, a reliable release point can be obtained.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a partial sectional view of FIG. 1, and FIGS. 3, 4 and 5 are partial sectional views showing another embodiment of the present invention.

In the drawings, (1) is a cover body, which is usually different in polarity from the magnet body provided on the inner wall portion (2) of the thumb hole of the bowling ball (4), and the cover body (1) is attracted by an attractive force. Although it will not be detached if it is inserted into the inner wall of the thumb hole (2), the cover body (1) becomes anti-polar when the sensor is activated and becomes the same pole as the magnet body provided on the inner wall of the thumb hole (2), and repulsive force is exerted. Will be immediately released by. It should be noted that it is also possible to use a detaching means by the attraction and repulsion of positive electricity and negative electricity. (3) is a sensor, which is attached to the dominant arm (the pitching side) to constantly detect the swinging direction and angle of the arm, and operates according to the set angle (the angle of the arm at which the timing for pulling out the thumb is optimal). Make sure that the swing of is activated in the forward direction. That is, the set angle is ± 0, the forward direction is + θ, the backward direction is −θ, and ± 0 from the −θ side.
It will be activated when it reaches. The setting angle of the sensor (3) can be arbitrarily set by a scale or the like, and the timing can be changed appropriately. As another embodiment, as shown in FIG. 3, a protruding piece (5) is attached to the tip of the cover body (1).
Is attached by a rotary shaft (6) (a notch (7) is provided to allow the protruding piece (5) to rotate and move into the cover body (1)), and the inner wall of the thumb hole (2) is attached. A configuration in which the cover body (1) can be locked with the protruding piece (5) protruding, and the rotary shaft (6) rotates and automatically enters the cover body (1) when the sensor (3) operates. There is something. In this case, when the cover body (1) is attached to the thumb and inserted into the thumb hole, the protruding piece (5) hits the inner wall portion (2) of the thumb hole and is forced into the cover body (1). It can be easily inserted, and when the insertion is completed, the protruding piece (5) again projects and the cover body (1) does not come out. Since the protruding piece (5) automatically rotates into the cover body (1) by rotating, the protruding piece (5) can be removed from the finger hole without being caught. Also, as shown in FIG. 4, insert a rod-shaped substitute (8) to replace the thumb into the thumb hole,
Means may be provided such that the substitute (8) slides when the sensor (3) is actuated, enters and leaves the holder (9). Further, as shown in FIG. 5, a suction cup (10) which can be adsorbed on the surface of the bowling ball (4) may be used to separate the sensor (3) at the time of operation.
It suffices to provide an air insertion hole (11) for feeding air into the suction cup (10) so that air is fed in when the sensor (3) is activated and the suction force is removed to remove the air. The means for removing the cover body (1) and the alternative (8) from the bowling ball (4) from the thumb hole is not particularly limited, and the cover body (1) and the alternative body (8) can be removed immediately (that is, when the sensor (3) is activated) immediately. Any means can be used so that the thumb part can be removed. Further, the cover body (1) may be shaped so that it can be directly attached and fixed to the thumb, or it may be fixed and fixed to the styli.
The substitute (8) may be fixed to an appropriate position with a band or the like.

(Effects of the Invention) As described above, according to the present invention, the cover body does not hurt the thumb, and the cover body automatically separates from the finger hole at the optimal timing for pulling out the thumb. The important timing for pulling out the thumb is always obtained in an optimum state, which is an extremely useful invention for athletes and the like, and has a great effect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention. Figure 2 shows the first
FIG. 3, 4 and 5 are partial sectional views showing another embodiment of the present invention. FIG. 6 is a partial side view showing the suction state of the suction cup (10). 1 ... Cover body, 2 ... Thumb hole inner wall portion, 3 ... Sensor, 4 ... Bowling ball, 5 ... Projection piece, 6 ... Rotation axis, 7 ... Notch portion, 8 ... Alternative, 9: Holder,
10 …… Sucker, 11 …… Air insertion hole

Claims (2)

(57) [Claims] 1. A sensor (3) which constantly detects the swinging direction and angle of an arm and operates according to a set angle is attached to a dominant arm, and is inserted into a thumb hole of a bowling ball (4) in association with the sensor (3). A cover body (1) or a thumb substitute (8) to be attached to the thumb so that the thumb or the substitute of the thumb is pulled out from the thumb hole, and a detaching means interlocking with the sensor is provided in the thumb hole portion. A device for removing the thumb of a bowling ball. 2. A sensor (3) that constantly detects the swinging direction and angle of the arm and operates according to the set angle is attached to the dominant arm, and a suction cup (10) fixed to the arm side is adsorbed on the surface of the bowling ball (4). The bowling ball (4) is held by the sucker (10) and the middle finger and the ring finger, and the sucker (10) sends air into the sucker when the sensor (3) is activated to eliminate the suction force and thereby the bowling ball. A device for removing a thumb of a bowling ball, which is provided so as to separate from the bowl (4), and is provided with a means for facilitating the removal of the thumb inserted into the thumb hole when the sucker (10) is separated from the bowling ball (4). .