JP3497609B2 - Helmet with built-in battery and helmet charging device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a helmet incorporating a rechargeable battery and a charging device for charging the battery incorporated in the helmet by using electromagnetic induction.

[0002]

2. Description of the Related Art For example, in a helmet of a motorcycle or the like, electronic equipment such as a wireless headphone, a radio, a cordless telephone, a display device for displaying a driving state of a vehicle, etc. is attached to make it multifunctional and convenient. Power supply for electronic equipment is required. The helmet with an indicator light described in JP-A-57-161109 has a storage battery, a transformer for charging the storage battery, a rectifier, and a socket for connecting to a commercial power source.

An electric motorcycle equipped with a helmet compartment is
JP-A-4-260886, JP-A-6-27866
It is known from Japanese Patent Publication No. 7 and the like.

[0004]

However, in the configuration of charging with a commercial power source, it is necessary to incorporate a transformer in the helmet, which increases the weight of the helmet. A charging cord such as an extension cord is required to supply commercial power. Having a charging cord is annoying. Also,
If the socket connected to the commercial power source is wet with rainwater or the like, it is necessary to dry it before charging.

If the AC adapter is used to charge the battery with a DC power source, it is not necessary to provide a transformer in the helmet, but the charging terminal portion becomes poorly contacted due to dirt or the like, or the insulation deteriorates due to rainwater or the like. It is necessary to devise the structure to prevent it.

In some motorcycles, a helmet storage portion is provided below the seat, and it is convenient if the helmet storage portion can be charged while the helmet is stored.

The present invention has been made to solve the above problems, and a first object thereof is to provide a helmet capable of charging a built-in battery without using a charging cord. A second object is to provide a charging device capable of charging a built-in battery in a state where a helmet is stored in a helmet storage portion of an electric motorcycle.

[0008]

In order to solve the above-mentioned problems, the helmet with a built-in battery according to claim 1 can be charged.
Battery and power from this battery
It is a helmet that contains electronic devices that
Power receiving coil provided on the lower surface of the opening and electromagnetic induction function
Rectifies the AC power generated in the power receiving coil by
And an AC-DC converter for charging the battery,
AC power is supplied to the power supply coil and this power supply coil.
Prepare a charger equipped with a charging power supply circuit and the charger side
Between the power feeding coil and the power receiving coil on the helmet side
Characterized by electromagnetically coupling and charging the battery
And

The helmet charging device according to claim 2 is
A power supply coil is provided in the helmet compartment of the motorcycle, and a charging power supply circuit that supplies AC power to the power supply coil is provided on the motorcycle side, and the power supply coil and the power receiving coil provided on the helmet side are electromagnetic. It is characterized in that the battery provided on the helmet side is charged by being combined. The helmet charging device according to claim 3 is the above-mentioned.
In the configuration, the power receiving coil is the main body opening of the helmet.
It is characterized in that it is provided on the lower surface.

[0010]

[Action] battery built helmet according to claim 1, f
With the power supply coil of the charger provided in a place other than
In the meantime, since the battery is charged by rectifying the AC power generated in the power receiving coil by the electromagnetic induction action, the battery built in the helmet can be charged without using the charging cord.

The helmet charging device according to claim 2 is
Since the power supply coil is provided in the helmet storage portion of the motorcycle, the helmet side battery can be charged in the state where the helmet storage portion stores the helmet. According to claim 3
The helmet charging device is located on the underside of the helmet body opening.
Electricity for power supply between the provided power receiving coil
Magnetic coupling is formed.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a structural view of a helmet with a built-in battery according to claim 1. This helmet with built-in battery 1
The helmet body 2 includes an electronic device 3, a rechargeable battery (secondary battery) 4, an AC-DC converter 5, and a power receiving coil 6.
And equipped with.

The power receiving coil 6 is provided on the lower surface of the opening of the helmet body 2. Both ends of the power receiving coil 6 are AC-
It is connected to the DC converter 5. This AC-DC converter 5
Includes a rectifying / smoothing circuit that rectifies and smoothes the AC induced electromotive voltage generated in the power receiving coil 6, and a battery charging circuit that charges the battery 4 based on the DC voltage obtained by the rectifying and smoothing. The battery charging circuit includes a resistor or a constant current circuit so that the charging current of the battery 4 becomes substantially constant. The battery charging circuit may include an overcurrent prevention circuit and an overcharge prevention circuit.

When a power switch (not shown) is operated in the ON state, electric power is supplied from the battery 4 to the electronic equipment (eg, wireless headphones, radio, cordless telephone, vehicle operating status display, etc.) 3.

The charger 10 includes a power feeding coil 11 and a charging power supply circuit 1 for supplying AC power to the power feeding coil 11.
2 is provided. When the helmet 1 with a built-in battery is placed on the charger 10 so that the power receiving coil 6 and the power feeding coil 11 can be electromagnetically coupled to each other and AC power is supplied to the power feeding coil 11, the power feeding coil 11 is induced by electromagnetic induction. Since the electromotive force is generated, the battery 4 can be charged via the AC-DC converter 5.

FIG. 2 is a structural view of the helmet charging device according to the second aspect. The helmet charging device 20 has a structure in which a helmet storage portion 23 formed below a seat 22 of the motorcycle 21 can charge a battery built in the helmet side with the helmet 1 with a built-in battery stored therein. For this reason, the power feeding coil 11 is provided at the bottom of the helmet storage section 23. Helmet compartment 2
The power feeding coil 11 is arranged at a position facing a power receiving coil (not shown) wound around the opening of the helmet 1 with a built-in battery housed inside 3.

The motorcycle shown in FIG. 2 is an electric motorcycle that travels by driving the motor provided in the power swing unit 25 with the electric power of the traveling battery 24.
A charger 26 for charging the traveling battery 24 using a commercial power source is provided. Then, the charging power supply circuit 1 for supplying AC power to the power feeding coil 11 in the charger 26.
There are two. The charging power supply circuit 12 only needs to be provided on the motorcycle 1 side, and for example, the charging power supply circuit 12 may be provided integrally with the power feeding coil 11 at the bottom of the helmet storage section 23.

FIG. 3 is a circuit block diagram of the helmet charging device according to the second aspect. The charger 26 includes a traveling battery charging circuit 27 and a charging power supply circuit 12. The traveling battery charging circuit 27 is a transformer for converting commercial power supplied through a charging cord 29 having an AC plug 28, and a rectifying / smoothing circuit for outputting a DC power that has been rectified / smoothed with a transformer output. And a charging control circuit or the like for charging the traveling battery 24 under a predetermined voltage / current condition based on the smoothed DC power supply. The traveling battery charging circuit 27 has a circuit configuration capable of supplying the charging power supply circuit 12 with the DC power supply 27a which is the output of the rectifying and smoothing circuit. As shown in FIG. 2, the charging cord 29 having the AC plug 28 is stored in a cord storage chamber provided on the side of the charger 26 by using a curl cord. It is possible to connect to a commercial power outlet by pulling out the cord 29 for use.

The charging power supply circuit 12 for supplying AC power to the power supply coil 11 is operated by the DC power supply 27a when the traveling battery charging circuit 27 is supplied, and is supplied by the DC power supply 27a. If not, the power is supplied from the traveling battery 24 to operate. Therefore, charging of the traveling battery 24,
It is possible to efficiently charge the battery 4 on the helmet 1 side at the same time.

When a charging switch or the like (not shown) is operated to charge the battery 4 on the helmet 1 side, the charging power supply circuit 12 generates AC power having a predetermined frequency, and the generated AC power is supplied to the power supply coil 11. Supply. The charging power supply circuit 12 monitors the current supplied to the power supply coil 11, and when the detected current is less than or equal to a predetermined value, determines that the helmet 1 with a built-in battery does not exist, and sends the power to the power supply coil 11. The power supply of is stopped. In addition, after the current of a predetermined value or more is detected and it is determined that the helmet 1 with a built-in battery is present and charging is started,
The current supplied to the power feeding coil 11 is monitored, and when the detected current is substantially close to the predetermined value for the predetermined time, it is determined that the battery 4 on the helmet side is fully charged, and the power feeding coil is determined. The power supply to 11 is stopped. Even when it is determined that the battery is fully charged, power may be intermittently supplied to the power supply coil 11 to perform additional charge.

By disposing the cylindrical magnetic body 30 which is inscribed in the opening of the helmet 1 with a built-in battery across the power receiving coil 6 and the power feeding coil 11, the power receiving coil 6 and the power feeding coil 11 are connected. The positional relationship may be restricted to a predetermined range and the electromagnetic coupling between the power receiving coil 6 and the power feeding coil 11 may be increased to improve the power transmission efficiency.

In FIGS. 2 and 3, the traveling battery 24 is used.
As an example of an electric motorcycle equipped with, a battery 4 on the side of the helmet 1 is provided with an electromagnetic induction effect by receiving power supply from the traveling battery 24 or a commercial power source for charging the traveling battery 24. However, in a motorcycle or the like that does not include a battery, the battery 4 on the helmet 1 side is charged using the electromagnetic induction action based on the power generation output of the engine generator in the engine operating state. May be.

[0023]

As described above, since the helmet with a built-in battery according to claim 1 is configured to charge the battery by rectifying the AC power generated in the power receiving coil by the electromagnetic induction action, the charging cord is The battery built into the helmet can be charged without using it.

In the helmet charging device according to the second aspect, since the power feeding coil is provided in the helmet storage portion of the motorcycle, the helmet side battery can be charged while the helmet storage portion stores the helmet.

[Brief description of drawings]

FIG. 1 is a structural diagram of a helmet with a built-in battery according to claim 1.

FIG. 2 is a structural diagram of a helmet charging device according to claim 2;

FIG. 3 is a circuit block configuration diagram of a helmet charging device according to claim 2.

[Explanation of symbols]

1 Helmet with built-in battery 2 helmet body 3 electronic devices 4 battery 5 AC-DC converter 6 Power receiving coil 11 Power supply coil 12 Charging power supply circuit 20 Helmet charging device 23 Helmet storage

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Claims (3)

(57) [Claims] 1. In a helmet containing a rechargeable battery and an electronic device driven by the electric power from the battery, a power receiving coil provided on the lower surface of the helmet opening , and a power receiving coil by an electromagnetic induction action. An AC-DC converter that rectifies the generated AC power and charges the battery, and supplies the power supply coil and the AC power to the power supply coil.
A charger including a charging power supply circuit is prepared, and the power feeding coil on the charger side and the helmet side
The battery is electromagnetically coupled to the power receiving coil.
A helmet with a built-in battery, which charges the battery. 2. A provided with a power supply coil to the helmet storage unit of the motorcycle, the charging power supply circuit for supplying the AC power to the feeding coil provided on the motorcycle side, coil and f for the supply <br/> electrostatic A helmet charging device, characterized in that a battery provided on the helmet side is charged by electromagnetically coupling with a power receiving coil provided on the lummet side. 3. The main body of the helmet is used for the power receiving coil.
It is provided on the lower surface of the mouth part, and it is characterized by the above-mentioned.
Helmet charging device.