JPH041635B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is applicable to sports balls, especially lifting in soccer competitions, or the number of times the ball is kicked until it hits the ground or the length of time the ball stays in the air, such as in the traditional Japanese game of Kemari. Regarding the best exercise balls for competitive games.

Conventional technology One of the skills of soccer players has been ball lifting, an exercise in which one player places the ball on the top of the foot, knee, chest, forehead, etc., and holds the ball without letting it fall to the ground. When adopted as a game and compete for the number of kicks until the ball falls, the time the ball is held, and the time it stays in the air, the number of kicks must be counted by a human. In particular, it is impossible to convert technical difficulties such as ball retention time and flight time each time into points based on individual players' judgment unless a separate measurer is assigned. Furthermore, even if a measurer is assigned, the judgment of the difficulty of the technology is subject to subjectivity, making it difficult to objectively evaluate it. Furthermore, in the case of temari, which is a game for young children, it is difficult for the child to count the number of movements while exercising, and it would be extremely convenient if the number of movements could be automatically counted. In addition, conventional balls that emit a sound when kicking are found in toy balls for young children, but these use the sound when the air inside the ball blows out to make a whistle, or they have a bell inside the ball. It is impossible to change the sound generated depending on the situation, and it is not suitable for a game in which advanced lifting techniques are competed.

Purpose of the Invention The present invention has been made in view of the above circumstances, and includes an automatic external force counting means, a display means, and a sounding means built into the ball itself to automatically count the external force applied to the ball during kicking. At the same time, the difficulty of the exercise technique is converted into numerical values and displayed, and at the same time,
To realize an exercise ball that can notify you of the first time of soccer, the last time of soccer, and when a rule violation is committed with different notification sounds.

Structure of the Invention The exercise ball according to the present invention is made of either an impact sensor made of a vibrating electrode made of a weight and a spring, and a fixed electrode arranged around this electrode, or a piezoelectric element, and is configured to act on an external force applied to the ball. A detection means for detecting the contact, a calculation means for receiving a detection signal from the detection means and obtaining a numerical information signal related to the external force, a display means for displaying the numerical information signal from the calculation means, and a display means for displaying the numerical information signal by the calculation means. A circuit unit including a sound generating means for receiving the above numerical information signal and generating a notification sound corresponding to an external force, and a battery power source for driving each of the above means is formed on the surface of a ball having an air-tight tube while maintaining an air-tight state. The circuit unit is housed in a circuit unit housing section provided with a lid, and the circuit unit is covered with a lid member.

Embodiment In FIG. 1, reference numeral 1 indicates an exercise ball, and when used for lifting competitions, a ball having the same structure as a soccer ball can be used. 2 is an air injection valve, 3 is a circuit unit, 4 is a circuit unit storage part (hereinafter simply referred to as storage part) for storing the circuit unit 3, and 5 is a lid member for closing the opening of the storage part 4. As shown in the figure, the storage section 4
is arranged at a position facing the valve 2, and is adjusted so that the weights of the circuit unit 3 and the valve 2 are approximately equal. That is, generally the weight of the valve 2 is
Since the weight of the circuit unit 3 is about 15 g to 20 g, the balancer 6 is attached to the valve 2 side, and the weights of both are set to be substantially equal.

FIG. 2 shows the surface of the ball 1, and 5 is the aforementioned lid member, which has a display window 7 made of a transparent member and a sound emitting hole 8 made of a plurality of small holes. Numerical information displayed on the display panel constituting the circuit unit 3 can be visually recognized through the display window 7. Lid member 5
is made of an elastic material such as rubber or elastic synthetic resin, and at least the portion of the circuit unit 3 corresponding to the display panel is made of a transparent member. However, the entire lid member 5 is formed of an opaque material,
The numerical information displayed on the display panel may be read with the lid member 5 removed.

FIG. 3 shows the display contents that appear on the display window 7, and in the case of this embodiment, two types of information are displayed alternately, for example, at a one-second period. That is, the numerical values shown in Figure A represent the number of times of lifting, and the numerical values shown in Figure B represent the value obtained by adding the difficulty to the number of times of lifting and converting it into a score. Here, the difficulty refers to the height of the ball 1 in each kick, that is, the flight time, and this is converted into a signal by detecting the time interval from the first kick to the next kick. As this time interval increases, the score increases in a geometric progression, as shown in FIG.

FIG. 4 shows the circuit unit 3 removed from the ball 1. The lid member 5 has a protrusion 9 on its side wall, and the protrusion 9 engages the groove 10 formed on the ball 1 side. By matching, the lid member 5 is supported and fixed to the ball 1. 7 and 8 are the aforementioned display window and sound emitting hole, respectively. In the circuit unit 3, 11 is a molded body made of synthetic resin, 12 is a soft elastic thin film made of rubber or the like adhered to the surface of this molded body 11, and 13 is a display from which the display surface of a display panel 14, which will be described later, is exposed. window,
15 is a piezoelectric buzzer corresponding to the sound emitting hole 8 of the lid member 5; 16 is a hole having a switch 17 (FIG. 5) having multiple functions such as a power switch and a counting reset switch; 18, 18 are , screw 19,
19 is a hole to be inserted. 20 is a semicircular recess formed on the side surface of the molded body 11, and a screw 19 is inserted therein.
protrudes into the recess 20 and is screwed into a screw hole 23 formed in a protrusion 22 formed in a case 21 made of hard synthetic resin or light metal provided on the ball 1. The recessed portion 20 and the convex portion 22 have substantially the same surface shape, and are also used for positioning the circuit unit 3 within the case 21 and for preventing rotation.

FIG. 5 shows the structure of the circuit unit 3.
The display panel is preferably a thin, low power consumption type display panel such as a reflective liquid crystal display panel or an electrochromic display panel. In addition, it is also possible to use a light emitting diode or an electroluminescent display panel as the display panel. Here, as a liquid crystal display panel, if spacer particles are mixed in the liquid crystal and the entire panel has a flexible structure,
The impact resistance of the panel can be improved. Furthermore, when an electrochromic display panel is used, its strength can be improved by using a solid electrolyte and making the entire panel a solid structure. 24 is
Board 2 is an LSI that constitutes a microcomputer.
It is fixed on 5. 26 is a connector made of conductive rubber or the like that connects the wiring on the substrate 25 and the wiring on the display panel 14. 15 is a piezoelectric buzzer fixed on the substrate 25; 17 is a switch; 12
is a soft elastic thin film. The switch 17 has a conventionally well-known structure, for example, a contact provided on a substrate 25 is covered with a cap-shaped conductive rubber, and the cap-shaped conductive rubber is pressed with a thin rod through the hole 16 to bring it into contact with the contact. Structures can be used. The multiple functions of the switch 17 can be distinguished by the number of operations, and is designed so that one operation turns the power on and off, and two consecutive operations resets the count. A battery 27 is pressed toward the substrate 25 by a spring electrode 28 fixed to the molded body 11. 29 is an impact sensor that detects external force applied to the ball 1, and includes a coiled spring electrode 30 and a weight electrode 31 fixed to the end thereof.
A vibrating electrode 32 and a cylindrical fixed electrode 33 surrounding the vibrating electrode 32 are formed. 3
4 is a boosting coil for increasing the sound pressure of the sound generated by the piezoelectric buzzer 15.

FIG. 6 shows how the circuit unit 3 is attached to the ball 1. In the figure, the storage section 4 contains the ball 1
It is integrally molded with the air-tight tube 35 constituting the innermost layer of the tube or is bonded to the air-tight tube 35 while maintaining a sealed state. The storage portion 4 can be made of the same rubber material as the tube 35, for example, butyl rubber. Reference numeral 21 denotes a storage case made of hard synthetic resin or light metal such as aluminum, and its side surface is buried in the storage section 4. The storage case 21 includes the aforementioned convex portions 22, 22 and screw holes 23, 23 (fourth
) is formed, to which the circuit unit 3 is fixed with screws 19, 19. To explain the structure of the ball 1 side, 35 is the aforementioned tube, 36 is a thread-wound layer formed by covering the outer periphery of this tube 35, 37 is a middle layer made of rubber, and 38 is a skin made of natural leather or synthetic leather. It is a layer.

In FIGS. 7 and 8, reference numeral 29 denotes the aforementioned impact sensor, which receives an external force applied to the ball 1 and generates an impact pulse P1. 39 is a waveform shaping circuit that inputs this pulse P1, and a battery power supply 27
is driven to obtain an impact pulse P2.
CP indicates a clock pulse waveform output from an oscillator 40 (FIG. 9), which will be described later.

FIG. 9 shows an example of a signal processing circuit, 41 is an AND gate into which pulse P2 is input; 42
is a number counter to which the output of this AND gate 41 is added, and 43 is a comparator which takes the output of this number counter 42 as one input and the signal corresponding to number 1 as the other input, and when both inputs match. That is, when the output of the number counter 42 is 1, H
Outputs a (high) level signal. This H level signal is applied to the first stage circuit 44 of the electronic sound generation circuit 44 and drives it. The electronic sound generation circuit 44 is divided into four stages, the first stage circuit 44 is a continuous sound signal with a fixed time width, the second stage circuit 44 is an instantaneous single sound signal, and the third stage circuit 44 is an intermittent sound signal. The sound signal, fourth stage circuit 44 outputs a continuous sound signal having a fixed time width. These four-stage circuits 44 to 44
Each output signal from the electronic sound generation circuit 44 consisting of the following is applied to the driver circuit 41 via the OR gate 45, and causes the buzzer 15 to sound. 47 is an AND gate which has two inputs: the output of the AND gate 41, the output of the comparator 43, and a signal obtained by inverting it via the inverter 48; its output is sent to the second stage circuit 44 of the electronic sound generation circuit 44 is input to. 40
is an oscillator that generates a clock pulse CP, and this pulse CP is inputted to a counting terminal of a time counter 50 via an AND gate 49. Reference numeral 51 denotes a set/reset circuit which successively outputs a reset signal and a set signal immediately after the input of the pulse P2, which are added to the time counter 50. The time counter 50 first clears its counting contents by a reset signal, and then becomes ready for counting by a subsequent set signal. The reset and set signals are output in synchronization with the clock pulse CP. 52 is an arithmetic circuit that receives the output of the time counter 50 and executes the following predetermined arithmetic operation.

Y=(α・Ti)〓 …(1) Here, α and β are constants, α>10, β≧1. Also, Ti is from the i-th pulse P2 to (i
+1) is the period up to the pulse P2,
It is within the range of 0.25sec≦Ti<3.0sec. The value of Y represents the score, and as the value of the period Ti is large, the value increases in a geometric progression. The curve is shown in FIG. 53 is a latch circuit, 5
Reference numeral 4 denotes an adder which adds the result of the calculation by the calculation circuit 52 and the contents stored in the latch circuit 53, and the result is held in the latch circuit 53. In this way, the latch circuit 53 holds the sum of the scores up to the i-th score, and is calculated via the adder 54 every time the i+1-th score is output from the calculation circuit 52. 55 is the output pulse of the oscillator 40
A frequency divider that receives CP and divides the frequency into a 1Hz signal, 5
Reference numeral 6 denotes a display content switching circuit to which this 1Hz signal switching signal is input, and the score information signal from the latch circuit 53 and the number information signal from the number counter 42 are input as other input signals. The frequency information signal is output alternately at a 1Hz cycle. 57 is a driver circuit that receives the number information signal or the score information signal and obtains a display drive signal;
14 is a display panel. 59 is a comparator which inputs the time signal Ti from the time counter 50 as an input signal and inputs the time signal To set as the maximum period as a reference signal, and when the relationship Ti<To is satisfied, it is in a normal state. It makes a judgment and obtains an L (low) level signal at its output. In this embodiment, this time To is set to "3 seconds". This is due to the following reasons. In other words, in general, in ball lifting competitions, the period from the first impact to the second impact corresponds to the height of the ball that was kicked up, and the ball must be held high. Since this requires a high degree of skill, this period To cannot be infinitely long, and judging from the skill level of a normal player, it is based on the assumption that the limit is about 3 seconds. This comparator 59
The output of the third stage circuit 44 of the electronic sound generation circuit 44
At the same time, the signals are input to AND gates 41 and 49 via NOR gate 60. If the pulse P2 is not output even after the time To has elapsed after the pulse P2 is output, the output of the comparator 59 changes to H level, the output of the NOR gate 60 is inverted to L level, and the AND gates 41 and 49 Be cut off. In such a case, an electronic sound (intermittent sound) is used to indicate that the time is over, a rule has been violated, etc. In this case, it is necessary to control so that the contents of the time counter 50 counted until time To is reached after the last pulse P2 is output are not transferred to the arithmetic circuit 52. This is set
Using the signal from the reset circuit 51, only when the i+1st pulse P2 arrives, performs calculation based on the contents of the time counter 50 counted during the period from the i-th pulse generation time to the i+1th pulse generation time. This can be achieved by configuring it to do so.

61 is a comparator which takes the time signal Ti from the time counter 50 as an input signal and inputs the time signal Ts set as the minimum period as a reference, and Ti≧
When the relationship Ts is satisfied, it is determined that it is in a normal state and an L level signal is obtained at its output. In this embodiment, this time Ts is set to "0.25 seconds". This is due to the following reasons. In other words, if the period of impact is extremely short, if the bounce of the ball has naturally attenuated after falling to the ground, or if the intention is to increase the number of kicks by keeping the height of the ball extremely low. This is because this is considered to be the case, and the criterion time is set to "0.25 seconds". If the time Ti is smaller than this reference time Ts, the comparator 61
The output of NOR gate 6 changes to H level.
The output of 0 is inverted to L level, and the AND gate 4
1,49 is blocked. As a result, both the number counter 42 and the time counter 50 stop their counting operations.

Incidentally, the arrow indicated by R in the figure indicates a reset signal, which is generated when the above-mentioned switch 17 is operated and when the power is turned on.

Next, the operation of the circuit will be explained. In the initial state, all the circuits are in a reset state, and since the outputs of comparators 59 and 61 are both at L level, the output of NOR gate 60 is H, and therefore AND gates 41 and 49 are in an open state. In such a state, if a first impact pulse P2 is generated by applying an external force such as a kick to the ball 1, this pulse P2 is generated by the AND gates 41 and 4.
9 to the number counter 42 and time counter 50, respectively. When the number counter 42 counts 1, the two inputs of the comparator 43 both become 1.
, and an H level signal is obtained at its output. This H
The level signal activates the first stage circuit 44 of the electronic sound generation circuit 44, and a continuous sound having a fixed time width is emitted. This electronic sound means the start. The count signal of the number counter 42 is applied to the driver circuit 57 through a display content switching circuit 56 which is switched at a 1 Hz cycle, and the number 1 is displayed on the display panel 14 at a 1 second cycle.

Next, when the second impact pulse P2 is input, the content of the number counter 42 changes to 2. At this time, since the two inputs of the comparator 43 do not match, its output changes to L level, and therefore the inverter 48
The output is H, and the two inputs of the AND gate 47 are both H.
As a result, H is obtained as the output. This H level signal causes the second stage circuit 44 of the electronic sound generation circuit 44 to
is activated, and a momentary single sound is emitted. This means that external force is applied for the second time or later. When the second impact pulse P2 is input to the time counter 50, the count up to the time of inputting this pulse is input to the next stage arithmetic circuit 52,
Score conversion as described above is performed. Since the content stored in the latch circuit 53 is initially zero, this calculation result is stored in the latch circuit 53 via the adder 54, and this score information is provided to the display panel 14 via the display content switching circuit 56. Thus,
The numerical value 2, which is the content of the number counter 42, and the score are alternately displayed on the display panel 14 at one second intervals. Thereafter, each time the impact pulse P2 is applied, the contents of the number counter 42 are as follows.
The contents of the time counter 50 are incremented by 1, and the contents of the time counter 50 are processed through the arithmetic circuit 52 and accumulated in the latch circuit 53 as score information.

After impact pulse P2 occurs, time To (3 seconds)
If the next pulse P2 does not arrive during this period, the output of the comparator 59 changes to H, and the AND gates 41, 49
, the number counter 42 and the time counter 5
At the same time as prohibiting the sending of the count signal to 0, the third stage circuit 44 of the electronic sound generation circuit 44 is activated to emit a continuous sound having a fixed time width. This electronic sound is
It means running out of time or breaking the rules.

On the other hand, when the game ends and the ball falls to the ground,
When the bounce is attenuated, the pulse interval of the impact pulse P2 becomes gradually shorter, and when this interval becomes less than the time Ts (0.25 seconds),
The output of the comparator 61 changes to H, and the NOR gate 60
The AND gates 41 and 49 are closed via the .
As a result, the counting of the number counter 41 and the time counter 50 is prohibited in the same manner as described above, and at the same time, the fourth stage circuit 44 of the electronic sound generation circuit 44 is activated, and a continuous sound having a fixed time width is emitted. This electronic sound means the competition is over.

In this way, the competition is based on the number of times of lifting that is alternately displayed on the display panel 14 and the score obtained by adding the difficulty level to the number of times of lifting.

Although the initial purpose is achieved by the circuit configuration as described above, similar processing can actually be performed by a microcomputer. This will be explained using the program flowchart shown in FIG. When a start is applied, such as by turning on the power, the calculation section, storage section, etc. are first reset.
Subsequently, it is determined whether or not the impact pulse P2 has been input, and if the pulse P2 is present, a start sound, which is a continuous sound, is emitted. Subsequently, the time counter starts counting time. In the next step, the counting time Ti is compared with the longest reference time To, and if it is determined that Ti≧To, it is determined that the time has exceeded, and a rule violation is indicated by generating an intermittent electronic sound. After the electronic sound is generated, the state returns to the initial state. Furthermore, if the second impact pulse P2 is input within the period when the condition Ti<To is satisfied, the time counter stops counting, and the counting time Ti is compared with the minimum reference time Ts. If it is determined that Ti≧Ts is normal, a single electronic sound will be emitted, and if it is determined that the competition is over, the number of times completed and the score will be displayed, and at the same time a sound will be sounded to notify the end of the competition. is issued and returns to the initial state. As described above, when it is determined that Ti≧Ts and the number of times has been counted, the score is subsequently calculated. This is done using the above-mentioned equation (1), and then the integration is performed. This is shown in the following equation.

Y= _N 〓 ⁱ⁼¹ (α・Ti)〓 (2) The score Y thus calculated and the number of impacts N are displayed alternately on the display panel. After such processing, the contents of the time counter are reset and the process returns to the step of starting time counting again. Such processing is repeatedly executed according to the input of the impact pulse, and the number of times is added and the score is calculated.

FIG. 12 shows a circuit unit 3' according to a modified example of the embodiment of the present invention, in which a piezoelectric element is used as an impact sensor in place of the impact sensor 29 having a mechanical structure. As shown in the figure, the piezoelectric buzzer 15' according to this example has a two-stage structure.
63a is a sounding part made of a stainless steel SUS plate 64a and a ceramic plate 65a that acts as a piezoelectric element, and 63b is a stainless steel plate 64.
b and a ceramic plate 65b, both of which are built into a synthetic resin case 66. 34 is a booster coil 62 for increasing the sound pressure of the sound generated by the sounding section 63a;
is a transistor chip that shapes the waveform of the impact pulse obtained at the impact sensor portion 63b;
These elements are embedded within the mold body 11. Since the other components are the same as those shown in FIG. 5, their explanation will be omitted.

FIG. 13 shows a circuit block diagram when a piezoelectric element is used as an impact sensor. One end of the impact sensor portion 63b is connected to a ground terminal, and the other end is connected to a waveform shaping circuit 67 via a capacitor 66. There is. This waveform shaping circuit 67 can be configured with one stage of the transistor 62 described above. 14th
The figure shows an impact pulse P1 emitted from the impact sensor portion 63b when an impact is applied to the ball and its waveform-shaped output pulse P2. CP is the clock pulse mentioned above. The impact pulse P2 is processed by the signal processing circuit shown in FIG. 9 and as shown in the program flowchart shown in FIG.

In the embodiments described above, the lifting of a soccer player was targeted, but a similar structure can also be incorporated in a volleyball. That is, an exercise in which several players form a circle and repeatedly pass the volleyball without letting it fall to the ground is commonly seen as a recreational activity or as a practice for unskilled players, but according to the present invention, the number of passes and the number of passes are The score is displayed taking into account the flight time, and at the same time, a notification sound is emitted every time you pass, making this type of exercise more interesting. In this case, the above-mentioned times To and Ts
needs to be set appropriately depending on the type of exercise.

Effects of the Invention According to the present invention, the ball itself has a built-in detection means for detecting an external force applied to the ball, and a means for counting and displaying this detection signal, so that players can exercise by themselves. There is no need to count the number of times, and you can concentrate on the competition. Furthermore, according to the present invention, since the height of the kicked ball is converted into a score and displayed, it becomes possible to objectively evaluate the athletic technique, and it can be used, for example, as a means of evaluating the lifting technique of soccer players. can. Furthermore, the ball according to the present invention emits a certain notification sound when kicking a ball, and a different notification sound when a game is over or when a rule violation is detected, which increases the interest of the user and makes it easier for young children to play. A ball suitable for various purposes can be realized. Furthermore, lifting competitions or kemari-like competitions using the ball according to the present invention include:
It does not require a large playing area and can be played by just one person, making it an easy sport to enjoy. Furthermore, according to the present invention, the circuit unit is placed under the surface of the ball while maintaining the air-tight state of the air-tight tube, that is, in a state where the circuit unit is isolated from the inside of the tube without exposing a part of the circuit unit inside the tube. Since the ball is stored in the ball, it is possible to obtain a degree of sealing that is comparable to that of conventional balls.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the ball according to the embodiment of the present invention;
The figure is a front view of the ball, FIGS. 3A and 3B are display state diagrams of the display panel, FIG. 4 is a perspective view showing an exploded state, and FIG. 5 is a diagram of the circuit unit shown in FIG.
6 is a sectional view of FIG. 4 when the circuit unit is attached to the ball, FIGS. 7 and 13 are block diagrams of the shock sensor and its surrounding circuitry, and FIGS. 8 and 14 are A signal waveform diagram, FIG. 9 is a signal processing circuit diagram, FIG. 10 is a program flowchart, FIG. 11 is a curve diagram showing the relationship between score Y and time Ti, and FIG. 12 is a modification of the embodiment of the present invention. FIG. 3 is a cross-sectional view of a circuit unit according to an example. 1...Ball, 3...Circuit unit, 14...
Display panel, 15, 15'...Piezoelectric buzzer, 24
...LSI, 29...Shock sensor.

Claims (1)

[Scope of Claims] 1. A ball having an air-tight tube; A circuit unit storage portion formed on the surface of the ball while maintaining the air-tight state of the tube; A weight fixed to the end of the spring body, which resists external force. An impact impactor having a mechanical structure comprising a vibrating electrode that vibrates when a vibration is applied thereto, and a fixed electrode disposed around and adjacent to the vibrating electrode, and in which the vibration of the vibrating electrode causes the electrode to come into contact with the fixed electrode. A detection means for detecting an external force applied to the ball, which is made of either a sensor or a piezoelectric element, a calculation means for receiving a detection signal from the detection means and obtaining a numerical information signal related to the external force, and the numerical information obtained by the calculation means. A circuit unit including a display means for receiving a signal and displaying the numerical information, a sounding means for receiving the numerical information signal from the calculating means and generating a notification sound corresponding to an external force, and a battery power source for driving each of the above means; An exercise ball comprising: a removable lid member that covers an opening portion of the storage portion; the circuit unit is stored in the circuit unit storage portion and covered with the lid member. 2. The circuit unit storage section is arranged on a surface of the air-tight tube facing the air injection valve,
2. The exercise ball according to claim 1, wherein the total weight of said circuit unit and said circuit unit storage portion is set to be substantially equal to the weight of said valve. 3. The patent characterized in that the lid member has a transparent area at least in a portion corresponding to the display means of the circuit unit, so that the display by the display means can be seen through when the lid member is attached to the ball. An exercise ball according to claim 1. 4. The calculating means includes a number counter for counting the number of times an external force is applied to the ball, and the content of the number counter is displayed on the display means, and the sounding means is operated each time the content of the number counter changes. An exercise ball according to claim 1, characterized in that: 5. The calculation means includes a time counter that counts the time interval between two external forces applied to the ball, and the display means displays score information calculated based on the contents of the time counter. An exercise ball according to claim 1. 6 The calculation means includes a number counter that counts the number of external forces applied to the ball, and a number counter that counts the number of external forces applied to the ball.
Claim 1, further comprising a time counter for counting time intervals between two external forces, wherein the contents of the number counter and the time counter are each converted into points and displayed on the display means. exercise ball. 7. The exercise ball according to claim 6, wherein the display means is comprised of one type of display device and alternately displays the score information of the number counter and the time counter at a predetermined period. 8. The calculation means includes means for multiplying the contents of the time counter by a different coefficient depending on the magnitude of the contents of the time counter, and the display means displays the numerical value multiplied by the coefficient as a score. Claims 5, 6, or 8
Exercise ball as described in section. 9 The calculation means calculates the number of times the number counter and the time counter when the content of the time counter exceeds the minimum time set based on the bounce of the ball and the maximum time set based on the flight time of the ball. 7. The exercise ball according to claim 6, further comprising prohibition means for prohibiting the counting operation. 10 The calculation means includes a number counter for counting the number of times an external force is applied to the ball, and the sounding means operates and sounds each time the content of the number counter changes, and when the content of the number counter is 1. 2. The exercise ball according to claim 1, wherein only one notification sound is generated that is different from other notification sounds. 11 The calculation means includes a number counter that counts the number of external forces applied to the ball, and a number counter that counts the number of external forces applied to the ball.
It includes a time counter that counts the time interval of two external forces, and when the content of the time counter is less than or equal to the minimum time set based on the bounce of the ball and exceeds the maximum time set based on the flight time of the ball. 2. An exercise ball according to claim 1, wherein said sound generating means generates a notification sound different from other notification sounds based on said detection signal.