JP2019150357A - Ball bladder and ball using the same - Google Patents

Abstract

To provide a ball bladder having an outer surface on which a pocket is provided so that a sensor device including sensors, communication means composed of a board and an antenna, and a power supply is to be stored; and a ball having a sensor device incorporated using the ball bladder.SOLUTION: A ball bladder according to the present invention is made by integrally vulcanizing a spherical rubber tube together with a reinforcement layer provided on an outer peripheral surface thereof, the rubber tube made by covering with a cover rubber a recess provided at a position on the outer surface side facing an air injection valve of the rubber tube. The recess is formed into a pocket in which a sensor device including at least a triaxial sensor, communication means, and a power supply is to be stored.SELECTED DRAWING: Figure 1

Description

  The present invention incorporates a sensor device including sensors such as a triaxial acceleration sensor, a triaxial geomagnetic sensor and a triaxial gyro sensor, a communication means, and a power source into a ball such as a volleyball, a handball or a basketball having a valve for injecting air. The present invention relates to an inner bag for a ball and a ball incorporating a sensor device using the same.

  A proposal to improve, improve or correct the skill of exercise using the ball by incorporating the sensor device into the ball and obtaining information such as the ball position information, flight direction, speed or acceleration, rotation direction or rotation speed There are various methods.

  For example, Patent Document 1 discloses a method of monitoring a ball used for exercise, which includes detecting a movement of the ball at a first time using a sensor module connected to the ball; Determining that the movement of the ball corresponds to a predetermined activation movement; entering the activation state of the sensor module in response to determining that the movement of the ball corresponds to the predetermined activation movement; and Detecting a movement of the ball at a second time point using a state sensor module has been proposed.

  Patent Document 2 includes a position information receiving unit that acquires position information, a motion detection unit that outputs a motion signal according to a motion state, a communication unit that communicates with the outside, and a processing unit, There has been proposed a ball characterized in that the processing unit acquires the position information and transmits it to the outside from the communication unit when it is determined that the processing unit is in a stationary state based on the motion signal.

  Patent Documents 3 and 4 propose a sphere rotation measuring device that can estimate the rotation speed and direction of a sphere flying with a simple configuration without being affected by the acceleration due to centrifugal force. . In this rotation measurement device, it is ideal to place the triaxial acceleration sensor that measures the rotation speed and rotation direction at the center of gravity of the ball, but even if an error occurs, it is less than 1 cm in radius, more preferably within 5 mm in radius. It is desirable to provide in a radius area. And in the Example using a rotation measuring device, the example of what divided | segmented the soft-type baseball ball or the volleyball into two and packed the sensor protected with the foaming polystyrene in the hollow part is described.

  In Patent Document 5, an inner bag of an inflatable ball having a shape substantially corresponding to the shape of the ball and provided with an electric wiring, the electric wiring is transformed into the inner bag. There has been proposed an inner bag that is arranged inside the inner bag partially along the skin of the inner bag with play so that damage to the electrical wiring is avoided even sometimes. This inner bag is said to be able to prevent damage to the electric wiring even in a ball to which a large external force such as a kick force of a soccer ball acts.

  Patent Document 6 discloses a basketball having a bladder that is inflated by injecting air from a valve, provided at a position off the center of the basketball, and an extended lip portion that is assembled integrally with the ladder, and a rechargeable type A pocket structure comprising a body portion having a cavity portion for accommodating a battery and a motion sensor, and the pocket structure is formed of a flexible member, and a groove groove is formed around the lower portion of the expansion lip portion. A basketball has been proposed that includes a holding member for fixing the rechargeable battery or the motion sensor. In this basketball, it is said that the pocket structure is compressed by the air in the ladder to securely fix the motion sensor accommodated therein, and vibration transmitted from the outer surface of the basketball can be reduced.

JP 2013-221942 JP 2016-16327 A JP 2010-256068 A JP 2012-58066 A JP 2010-125333 A U.S. Patent No. 8517870

  As shown in Patent Document 1 or 2, various proposals have been made to improve or improve the exercise skill of a person who exercises using a ball incorporating a sensor device, but how the sensor device is incorporated into the ball. There are few proposals that specifically describe whether or not However, as shown in Patent Document 3 or 4, the sensor is covered with a foam material and fixed to the center of the ball, and as shown in Patent Document 5, an antenna, a cable, or the like is provided in a tunnel extending on the inner surface of the inner bag of the ball. As shown in Patent Document 6, the pocket structure that is integrated with the ladder as shown in Patent Document 6 specifically shows how the sensor is incorporated in the ball. In particular, Patent Document 5 or 6 describes the configuration in detail.

  By the way, volleyball, basketball, soccer ball, football or the like has a ball inner bag (bladder) that forms the inside of the ball and into which air is injected through an air valve. Used. For this reason, a heat-cured rubber tube made of butyl rubber or the like is generally used as an inner bag for a ball, which is elastic, hardly leaks air, and has an excellent texture. However, since the heat vulcanization is performed by heating the rubber tube at 150 to 180 ° C., as shown in Patent Documents 3 to 6, in order to incorporate the sensor device inside the ball inner bag, the ball inner bag After cleaving and inserting the sensor device, it must be sealed. Such treatment causes problems such as air leakage and deteriorates productivity.

  In view of such a conventional problem, the present invention accommodates sensors such as an acceleration sensor and a geomagnetic sensor on the outer surface side of the ball inner bag, and a sensor device including a communication means including a substrate and an antenna and a power source. It is an object of the present invention to provide a ball inner bag provided with a pocket and a ball incorporating a sensor device using the ball inner bag.

  The ball inner bag according to the present invention has a spherical rubber tube in which a concave portion provided on the outer surface facing the air injection valve of the rubber tube is covered with a cover rubber. The inner bag for balls is integrally heat vulcanized with a layer, and the recess is a pocket for accommodating a sensor device having at least a triaxial sensor, a communication means, and a power source.

  Using the inner bag for the ball, the cover rubber portion is cleaved, the sensor device is accommodated in the pocket, the clogged portion is closed, and then a skin layer is provided on the outer peripheral surface, whereby the ball incorporating the sensor device is obtained. Can be produced.

  In addition, the sensor device is provided by sequentially providing a buffer layer and a skin layer on the outer peripheral surface after the cover rubber portion is cleaved using the inner bag for the ball, the sensor device is accommodated in the pocket, and the cleaved portion is closed. Can be produced.

  The concave portion of the ball is preferably a ball filled with a cushioning material made of rubber, foamed plastic, gel, air, or a mixture thereof.

  Since the inner bag for a ball according to the present invention is provided with a pocket for housing the sensor device on the outer surface side thereof, it is possible to provide a highly confidential and productive ball incorporating the sensor device.

It is sectional drawing which shows the structure of the inner bag for balls which concerns on this invention. It is sectional drawing of the ball | bowl using the inner bag for balls | bowl of FIG. It is sectional drawing of the other Example of the ball | bowl which concerns on this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a drawing showing a configuration of an inner bag for a ball according to the present invention. As shown in FIG. 1, the rubber tube 11 is provided with a recess 111 on the outer surface facing the air injection valve 14, and the recess 111 is covered with a cover rubber 112. The spherical rubber tube 11 is provided with a reinforcing layer 12 on the outer peripheral surface thereof. The ball inner bag 10 according to the present invention is formed by integrally heat vulcanizing a rubber tube 11 reinforced with the reinforcing layer 12. The recess 111 is a pocket 15 in which a sensor device having at least a triaxial sensor, a communication means, and a power source is accommodated.

  In the ball inner bag 10, the rubber tube 11 or the cover rubber 112 is made of a material such as butyl rubber or latex rubber. The reinforcing layer 12 can be formed by winding a reinforcing thread such as polyester or nylon around a spherical rubber tube 11. The rubber tube 11 reinforced with the reinforcing layer 12 and integrated is heat vulcanized. The thermal vulcanization is performed by a general method, and the temperature can be 150 to 180 ° C.

  The inner bag 10 is provided with the recess 111 on the outer surface side of the rubber tube 11 as described above, and the structure of the recess 111 accommodates at least a triaxial sensor, a communication means, and a sensor device having a power source. It is formed to be a pocket 15 that can be. That is, the recess 111 is provided with a structure that takes into account the configuration, shape, and protection of the sensor device. If necessary, the rubber tube 11 can be reinforced with the reinforcing rubber 113 to reinforce the main body 110 of the recess 111. In order to form the required pocket 15 in which the sensor device is accommodated, it is preferable that the shape or structure of the recess 111 is preliminarily heat vulcanized so that the structure of the pocket 15 can be secured. For example, a dummy can be embedded in the recess 111 and heat vulcanized.

  The ball inner bag 10 formed by heat vulcanization is easier to secure the sphericity of the ball than the conventional one in which the ball inner bag is opened and the sensor device is inserted. The inner bag 10 can be used as an inner bag for a normal volleyball, basketball, soccer ball or football.

  The thermally vulcanized inner bag 10 for balls can tear the cover rubber 112 and accommodate the sensor device in the pocket 15. The direction of cleavage is in the direction of the reinforcing yarn. After the sensor device is accommodated in the pocket 15, the cleavage portion is sealed with adhesive or a rubber patch. The pocket 15 can be a space portion formed by the recessed portion, can be a predetermined space portion provided in the recessed portion 111, and is formed from a frame member that fixes a sensor device further provided in the recessed portion 111. Can be.

  As shown in FIG. 2, the inner bag 10 for the ball in which the sensor device is accommodated is provided with a skin layer 20 on the outer peripheral surface thereof to form a ball 100 in which the sensor device is incorporated. The ball 100 can further be provided with a buffer layer inside the skin layer 20.

  The ball 100 according to the present invention can be used for various types of motion, and in order to reduce the load that propagates to the sensor device from vibration and impact force generated in the ball 100 during motion, the concave portion of the ball inner bag 10 according to the present invention 111 can be formed as follows. That is, the required recess material can be filled in the recess 111. As the cushioning material, rubber, foamed plastic, gel or air, or a mixture thereof can be used. Then, by filling the recess 111 with gas or liquid, the recess 111 can be set to a predetermined pressure. In addition, a case in which the sensor device is held at a predetermined pressure and sealed can be accommodated in the pocket 15.

  In the rubber tube 11 shown in FIG. 2, a main body portion 110 corresponding to the bottom portion of the concave portion 111 of the ball inner bag 10 is formed in a smooth shape. The rubber tube 11 can receive the load applied to the sensor device integrally with the rubber tube 11. In addition, the shape of the concave portion 111 of the ball inner bag 10 can be cylindrical as shown in FIG. In the case of this example, the sensor device can be accommodated in the cylindrical pocket 15 formed in the recess 111, and a large volume of filler can be filled around the sensor device.

  The ball inner bag 10 according to the present invention and the ball 100 incorporating the sensor device using the same have been described above. The ball inner bag 10 according to the present invention is excellent in sealing performance and productivity because the main body portion 110 of the rubber tube 11 is not cleaved, and can secure sphericity. Further, the ball inner bag 10 according to the present invention can be provided with a rubber patch around the position of the valve 14 facing the recess 111 as necessary in order to balance the sensor device accommodated in the pocket 15. .

10 ball inner bag
11 Rubber tube
110 Body part
111 recess
112 Cover rubber
113 Reinforcing rubber
12 Reinforcing layer
14 Valve
15 pockets
20 Skin layer
100 balls

Claims (4)

The spherical rubber tube in which the concave portion provided on the outer surface facing the air injection valve of the rubber tube is covered with the cover rubber is integrally heat vulcanized together with the reinforcing layer provided on the outer peripheral surface thereof. An inner bag for a ball,
The concave portion is an inner bag for a ball that is a pocket in which a sensor device having at least a triaxial sensor, a communication means, and a power source is accommodated.   A ball formed by cleaving the cover rubber portion of the inner bag for a ball according to claim 1, housing the sensor device in the pocket, closing the cleaved portion, and then providing a skin layer on the outer peripheral surface.   A ball formed by tearing a cover rubber part of the inner bag for a ball according to claim 1 and housing the sensor device in the pocket, and blocking the cleaved part, and subsequently providing a buffer layer and a skin layer on the outer peripheral surface.   The ball according to claim 2 or 3, wherein the recess is filled with a cushioning material made of rubber, foamed plastic, gel, air, or a mixture thereof.

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