JPS6327731Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a sounding ball that generates sound upon receiving an external impact.

<Prior art> Conventional balls with a sound-producing function include, for example, a hollow ball with a bell in it and a structure in which the bell rings as the ball moves (Utility Model Application No. 49-65349), a sound generator, and a battery. There is a known structure (Japanese Patent Publication No. 40-3081) in which the ball is placed at the center of the ball and is operated via a switch provided on the surface of the ball. A ball is also known in which a belly button is provided on the inner wall of the ball and at the same time a balancing protrusion is provided on the inner wall at a position symmetrical to the belly button to prevent the center of gravity of the ball from moving from the center of the ball (Japanese Utility Model Application No. 73162/1983).

<Problems to be solved by the invention> The ball disclosed in the above-mentioned Japanese Utility Model Publication No. 49-65349 makes sounds in response to various movements of the ball, such as when kicking or rotating, and the sensitivity cannot be adjusted. Since it is possible to do so, there is a disadvantage in that the sounding motion is irregular and, conversely, it kills the interest in exercise. Furthermore, since the bell is inserted into the hollow ball and rolls around, there is a problem that the feel during use is not necessarily good. In addition, in the ball disclosed in Japanese Patent Publication No. 40-3081, the weight of the sound generating device is estimated to be quite large, which is thought to have an adverse effect on the movement of the ball, and even if the ball has a hollow structure, the ball surface It is necessary to form a small hole for sound emission that communicates with the inside of the ball, and therefore there are problems such as the fact that it is impossible to give it the same resilience as a ball that has rubber elasticity and is filled with compressed air. be.

Further, in the technique disclosed in Japanese Utility Model Application Publication No. 51-73162, a balancing protrusion is simply provided to balance the weight, and no circuit means for generating sound is disclosed.

The present invention was developed in view of the above circumstances, and includes an external impact detection means for a ball having an air-sealed tube in which compressed air is sealed through an air injection valve and imparted with rebound resilience. The circuits necessary for sound generation, such as the sound signal generation circuit means, the sound generation means, and the battery power supply means, are integrated into a unit, and the weight is such that it does not substantially affect the movement of the ball.
This is placed on the inner surface of the tube facing the valve to maintain weight balance, and a small, lightweight switch with excellent mechanical strength is used as the external impact detection means.

<Means for Solving the Problems> The present invention provides a ball having an air-sealed tube in which compressed air is sealed through an air injection valve and imparted with rebound resilience as a ball, and the inner surface of the tube is A storage section formed in a position opposite to the valve to maintain an air-tight state of the tube, a lid member having a sound emitting hole that covers the opening of the storage section, and an external impact for detecting an impact applied to the ball. a detecting means, an integrated circuit sounding signal generating circuit means for receiving a detection signal from the external impact detecting means and generating a sounding signal, a sounding means for generating a sounding signal in response to a sounding signal from the sounding signal generating circuit means; The external impact detection means, the sound generation signal generation circuit means, and the battery power supply means for driving the sound generation means are provided, and the external impact detection means, the sound generation signal generation circuit means, the sound generation means, and the battery power supply means are arranged in the storage section. The sound-producing ball is configured such that the weight of the storage portion containing the respective means is such that it does not substantially affect the rebound resilience of the ball and is set to be substantially equal to the weight of the valve. The external impact detection means is composed of a cylindrical electrode, a spherical electrode supported by a spring body in the inner space of the cylindrical electrode, and a spring fixing portion that insulates the spring body and the cylindrical electrode. It is something.

<Operation> When an external impact of a predetermined intensity or higher is applied to the ball due to a kicking action or the like, the spherical electrode swings and comes into contact with the cylindrical electrode, and an impact detection signal is generated. In response to this detection signal, the sound generation signal generating circuit means is activated. The sound generation means is driven by the sound generation signal outputted from the sound generation signal generating circuit means to generate sound. The circuit unit is disposed on the inner surface of the tube at a position opposite to the air injection valve and has a weight substantially equal to that of the valve portion, so that the center of gravity of the ball coincides with the center of gravity, and the ball bounces. etc., to exercise normally.

<Example> In Fig. 1, 1 is a sounding ball according to the present invention, which is a ball having a structure in which compressed air is sealed through an air injection valve, such as a soccer ball, a handball, a dodge ball, etc., and can be of any size and surface. It can be any shape. 2 is an air injection valve,
Reference numeral 3 denotes a circuit unit provided on the surface facing the valve 2, 4 a storage part for storing the circuit unit 3, and 5 a lid member that presses and supports the circuit unit 3 after it is stored in the storage part 4. be. The total weight of the circuit unit 3 (including the battery), the storage section 4, and the lid member 5 is set to be approximately equal to the weight of the valve 2 portion, so that the center of the ball and the center of gravity coincide. Specifically, the circuit unit 3 includes an integrated circuit,
The use of small elements such as piezoelectric speakers reduces the size and weight, and the total weight including the storage section 4 is approximately 20.
It can be kept to about 30g or about 30g. On the other hand, since the weight of the valve 2 is usually about 8 g,
A balancer (not shown) weighing about 12g to 22g is added. Usually children's play balls, e.g.
Dotsuji balls for children weigh between 200g and 380g.
The increase in weight is approximately 32g to 52g.
Children's play is virtually unaffected. Further, since a normal soccer ball weighs about 500 g to 700 g, the above-mentioned increased weight is less than one-tenth of the weight of the ball, and has almost no effect on its movement.

FIG. 2 shows the structure before the circuit unit 3 is installed, and FIG. 3 shows the structure after it is installed, where 6 is the ball body, 4 is the storage part, and 5 is an elastic lid member made of a rubber material. . The circuit unit 3 includes a circuit board 7, a circuit section 8 which includes an integrated waveform shaping circuit and an oscillation circuit and functions as a sound generation signal generating circuit means, a piezoelectric speaker 9 which operates as a sound generation means,
and an impact sensor 10 functioning as external impact detection means, and each of these parts is integrally molded with resin 11. Furthermore, this circuit unit 3
has a battery case 13 in which a battery 12 is housed, and this case 13 is closed by a resin spring member 14. Here, the circuit section 8 is fixed to the inner surface (lower surface in the figure) of the substrate 7, while the piezoelectric speaker 9 and impact sensor 10 are fixed to the outer surface (upper surface in the figure). However, the impact sensor 10 can also be attached to the inner surface of the substrate 7. 36 is a sounding section of the piezoelectric speaker 9. However, this piezoelectric speaker 9
It is also possible to use an electromagnetic sounding body, a micro speaker, etc. instead. In particular, piezoelectric speakers and electromagnetic sounding bodies have low current consumption of approximately 1 mA and several mA, respectively, making them suitable for battery operation. Moreover, the battery 12 is
One electrode is brought into direct contact with the inner surface of the substrate 7,
The other electrode is connected to the substrate 7 from its side. The impact sensor 10 fixed to the substrate 7 includes a cylindrical electrode 15 made of a conductive metal such as aluminum or copper, and a coil spring 16 mounted inside the cylindrical electrode 15, as shown in FIG. 4A, for example. The cylindrical electrode 15 is composed of a spherical electrode 17 made of conductive metal such as iron, and a spring fixing portion 18 that fixes a coil spring 16 and insulates the cylindrical electrode 15 from the coil spring 16. The coil spring 16 is made of conductive metal and also serves as an electrical lead wire to the outside. Spring fixing part 18
is formed of an insulating resin such as Teflon, and has a threaded groove cut around its periphery, and is fixed by screwing this threaded portion into a similar threaded groove provided on the cylindrical electrode 15. Terminals 19, 19 are connected to the tips of the cylindrical electrode 15 and the coil spring 16, and are electrically connected to the circuit section 8 via the substrate 7. The impact sensor 10 utilizes the fact that when an impact is applied to the ball, the spherical electrode 17 swings and comes into contact with the cylindrical electrode 15 and conducts.This sensitivity is determined by the spring constant of the coil spring 16 or the spherical electrode 1.
Since it changes depending on the weight and size of 7, the sensitivity can be adjusted by appropriately adjusting these values. In this embodiment, the sensitivity is adjusted so that it operates only when a fairly large external impact is applied to the ball, such as when the ball is kicked or when it bounces a lot. Note that the structure of the impact sensor 10 is as follows:
The one shown in Figure 4B can also be adopted. In this example,
Instead of the coil spring 16, a linear or plate-shaped spring 20 is used. Its operation is as follows: Shock sensor 1
When an external force is applied to the cylindrical electrode 15 in the lateral direction in the figure, the spherical electrode 17 comes into contact with the cylindrical electrode 15 as shown by the broken line. For practical purposes, such a structure is sufficient.

The lid member 5 is made of an elastic material such as rubber, and is fitted into an opening 21 provided in the ball body 6.
A layer made of the same material as the ball skin layer is provided on the surface of the lid member 5 to improve the aesthetic appearance and the tactile feel. Reference numeral 22 denotes a reinforcing member provided in the opening 21 portion, which is made of rubber or the like, and has a ring-shaped groove 2 on its inner wall.
3 is provided. A ring-shaped protrusion 24 is formed on the side wall of the lid member 5, and by engaging with the ring-shaped groove 23, the lid member 5 is firmly fixed to the ball body 6. Reference numeral 25 denotes a sound emitting hole bored at a position corresponding to the sound emitting part 36 of the piezoelectric speaker 9, and the sound emitting hole 25 has a shape and size larger than at least the sound emitting part 36. That is, as shown in FIG. 2, the relationship between the diameter d of the sound emitting portion 36 and the diameter D of the sound emitting hole 25 must be D≧d. As a result, the sound emitted from the sound emitting section 36 is
The sound is emitted onto the ball surface without being absorbed by the sound emitting hole 25. It is even more effective to widen the sound emitting hole 20 toward the outside.

The accommodating portion 4 is for tightening the circuit unit 3, which is made of a bag made of an elastic material such as rubber, which is attached to the inner surface of the inner tube 26. The ball body 6 is
Butyl rubber inner tube 2 which is the innermost layer
6. Consisting of a thread-wound layer 27 that regulates the dimensions of the ball, reinforces it, and imparts elasticity, a middle layer 27 made of a highly elastic rubber material such as natural rubber, and a skin layer 29 made of natural leather, synthetic leather, or rubber pieces. Ru.

FIG. 5 shows the surface structure of the lid member 5, and 25 is a sound emitting hole that emits the sound emitted from the piezoelectric speaker 9 and the sound to the outside. The diameter of this cover member 5 is set to a value slightly smaller than that of the circuit unit 3, and this range can be about 1.0 cm to about 1.5 cm.

FIG. 6 shows an example circuit diagram, and circuit diagram 8 shows:
It includes a waveform shaping circuit 30 and an oscillation circuit 31. These circuits can be powered by the battery 12.
Since the power consumption in the circuit section 8 when the speaker is not in operation is very small, a power switch is not necessary. battery 12
As the battery, lithium batteries, general silver oxide batteries, mercury batteries, alkaline manganese batteries, etc., which can obtain high voltage, are used. These devices are suitable for the present invention because they are lightweight, weighing approximately 1 to 3 g, and have a large electrical capacity. The impact detection signal from the impact sensor 10 is applied to the waveform shaping circuit 30 and is waveform-shaped to obtain a waveform signal P1 shown in FIG. This detection signal P1 is input to the next-stage oscillation circuit 31, which outputs predetermined pulses, for example, a plurality of pulses P2 having different pulse widths and pulse intervals, in a short period of time for each input signal P1. This pulse train may be set arbitrarily, and the pulse width and interval may be constant. This pulse train P
2 is applied to the piezoelectric speaker 9 to generate an intermittent sound. In this way, with the ball according to the embodiment, the predetermined intermittent sound is emitted only when a strong external force is applied, such as when the ball is kicked or when the ball falls to the ground from a considerable height. Incidentally, the waveform shaping circuit 30 and the oscillation circuit 31 can be constructed from a one-chip LSI. Also, instead of an oscillation circuit that emits continuous or intermittent sounds as a sound generation means,
It is also possible to use a melody signal generation circuit that generates melody sounds for a certain period of time, for example, from several seconds to several tens of seconds. Furthermore, for speech synthesis, which has been put into practical use recently.
If an LSI is used, it is possible to use an LSI in combination with a counter to make audible notifications such as "once", "twice", etc. each time an external force is detected, and various sounds can be selected from these sounding means. As the melody signal generation circuit or audio signal generation circuit, commercially available melody ICs or voice synthesis LSIs can be used, and these have low power consumption and can withstand battery operation. be. An example of the circuit is shown in FIG. In the figure, 35 is for melody IC or voice synthesis
In the case of a melody IC, a different song can be played each time an external force is detected, and in the case of an LSI for speech synthesis, a counter can be used in both LSIs to play a different song.
By writing information regarding predetermined words into the ROM, it is possible to pronounce them as "once", "twice", etc. as described above. The other circuit components are the same as those shown in FIG. In addition, the above melody
In the case of an IC or a voice synthesis LSI, the impact sensor 10 is used for a predetermined period, for example, 30 seconds (this period is arbitrarily set depending on the competition), when it is presumed that the movement with the ball or the competition has ended. It is designed to be automatically reset when no signal is input.

FIG. 9 shows a modified example of the circuit unit 3,
It has a waterproof structure. Reference numeral 32 denotes an envelope made of metal or water-resistant resin, the inside of which is filled with silicone resin 33, in which the substrate 7, circuit section 8, impact sensor 10, etc. are buried. The screw member 14 is also made of water-resistant resin, and a waterproof gasket 34 is provided to prevent moisture from entering the battery storage case 13. The piezoelectric speaker 9 also has a waterproof structure.

<Effects of the invention> The present invention integrates the circuits necessary for sound production, such as an external impact detection means, a sound generation signal generation circuit, a sound generation means, and a power source, and also achieves low power consumption and is small and lightweight to the extent that it can be driven by a small battery. By making this into a unit circuit and placing it on the inner surface of the tube opposite to the above-mentioned air-sealed valve having an air-filled valve to achieve balance, it is possible to substantially influence the movement of the ball. It is possible to have a structure that does not affect The present invention also uses a cylindrical electrode and a spherical electrode supported by a spring body in the space inside the cylindrical electrode as an external impact detection means, and uses the signal caused by the contact of the electrode as a detection signal, so that it is possible to detect an impact. It is possible to reduce the size and weight of the sensor and improve its mechanical strength.

[Brief explanation of drawings]

The figures show an embodiment of the present invention; FIG. 1 is a sectional view of the ball, FIG. 2 is an exploded sectional view of essential parts, and FIG.
4A is a sectional view showing the impact sensor; FIG. 4B is a sectional view showing a modification thereof; FIG.
6 and 8 are circuit diagrams, FIG. 7 is a signal waveform diagram, and FIG. 9 is a sectional view showing a modified example of the circuit unit. DESCRIPTION OF SYMBOLS 1...Ball, 2...Valve, 3...Circuit unit, 4...Storage part, 5...Lid member, 8...Circuit part, 9...Piezoelectric speaker, 10, 10'...Shock sensor, 11 ... Resin, 30 ... Waveform shaping circuit,
31...Oscillation circuit, 35...Melody IC or voice synthesis LSI.

Claims (1)

[Scope of utility model registration request] A ball having an air-sealed tube that is filled with compressed air through an air injection valve and given rebound resilience as a ball, and maintains the air-sealed state of the tube at a position facing the valve on the inner surface of the tube. a lid member having a sound emitting hole that covers the opening of the storage portion, an external impact detection means for detecting an impact applied to the ball, and a detection signal received from the external impact detection means. , a sound generation signal generation circuit means which is an integrated circuit for generating a sound generation signal, a sound generation means which generates sound in response to a sound generation signal from the sound generation signal generation circuit means, the external impact detection means, the sound generation signal generation circuit means and the sound generation means. The external impact detection means, the sound signal generation circuit means, the sound generation means, and the battery power supply means are housed in the storage section, and the storage section that houses each of the above means. The sounding ball has a weight that does not substantially affect the rebound resilience of the ball and is set substantially equal to the weight of the bulb, and the external impact detection means includes a cylindrical electrode and A sounding ball comprising: a spherical electrode supported by a spring body in the inner space of the cylindrical electrode; and a spring fixing portion that insulates the spring body and the cylindrical electrode.