JP3378919B2 - On-board charging device for electric assist bicycle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted charging device for an electric assist bicycle.

[0002]

2. Description of the Related Art Conventionally, in an electric assisted bicycle, a battery for supplying electric power to an electric motor for assisting the bicycle is mounted on each part of a bicycle frame as disclosed in, for example, Japanese Patent Laid-Open No. 358986/1992. There is. Further, in Japanese Laid-Open Patent Publication No. 9-16749, a combined body in which a battery case that can be coupled and separated from each other and a charger for the battery case are coupled to each other is detachably stored in an electrically connected state in an outer box. A battery storage device for a vehicle has been proposed.

Conventionally, the battery capacity of an electrically assisted bicycle has been targeted mainly at the housewives, who are the main users.
From the range of activities of daily life centered on that shopping, for example, when going back and forth 2 km, running about 4 to 5 km a day, it will be about 30 km in a week, and from that range, from 28 km It has a cruising range of 30km for general driving.

[0004]

Even with the mileage of 30 km, there are various road conditions and driving conditions such as a large slope, a small slope, continuous slopes, strong headwinds, and selection of driving modes. However, since the cruising range changes, power may be consumed unexpectedly, and the battery may run out of power in the middle. Therefore, if you set a charger, you can connect it to the outlet of the power supply while you are out, or at the destination or the relay place, charge the battery mounted on the bicycle, restore the power, and improve so that you can run again. It is a thing. However, it costs much to set the charger integrally, and the weight is heavy when the charger is always set integrally.

The present invention provides power supply only by the battery section,
The connection and opening of the battery part and the charger can be easily done with one touch, and the physical connection is reinforced by the connection of the charging / discharging terminals of the electrical connection, so that the connection of the battery part and the charger can be made reliable and strong, and the structure is simple. The purpose is to provide at low cost.

[0006]

An electrically assisted bicycle in which a charger is connected between a battery case and a seat supporting the battery case by a connecting means to be mounted on a vehicle so that the battery section can be charged. In the on-vehicle charger for a vehicle, the lower end of the battery case and the upper end of the charger are fitted into each other unevenly, and at the same time, the charging / discharging terminals arranged on the corresponding surfaces of the lower end of the battery case and the upper end of the charger electrically, together physically coupled, engaging one another by an engagement pawl provided in the charger and the engaging portion provided in the battery unit, opened, the battery unit and disconnect the charger electrically and physically to the seat An electrically assisted bicycle characterized by being connected to electrically assisted traveling, and connecting a charger to a battery part to be electrically and physically connected to a seat so that electrically assisted traveling can be performed in a standby state where charging can be performed anywhere. for In the Noshiki charging device.

The engaging claw may be covered and housed in the receiving seat in a state where the battery case and the charger, which are connected to each other, are mounted on the vehicle.

The engagement claw may be covered by the vehicle body frame member in a state where the battery case and the charger, which are coupled to each other, are mounted on the vehicle body.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A vehicle-mounted vehicle for an electrically assisted bicycle, in which a battery charger is connected between a battery case and a seat that supports the battery case by a connecting means so that the battery can be charged. In the case of a battery charger, the lower end of the battery case and the upper end of the charger are mated with each other, and at the same time, the charging / discharging terminals arranged on the corresponding surfaces of the lower end of the battery case and the upper end of the charger electrically and physically. with binding to the locking together by an engagement pawl provided in the charger and the engaging portion provided in the battery unit, power-assisted bicycle vehicle charging apparatus which is characterized in that opening.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An on-vehicle charging device for an electrically assisted bicycle according to the present invention will be described below with reference to an embodiment shown in the drawings.
Is a side view of the electric assisted bicycle 1, in which the main frame 2 is equipped with the electric assisted unit 3, and although not shown, the electric motorized drive system is provided with a drive system from the electric motor, a controller for controlling the electric motor, and the like. However, the drive system from the electric motor is linked to the crankshaft 4, detects the pedaling force of the pedal 5 and transmits the assist output to the crankshaft 4, thereby reducing the running labor thereof at a constant rate (for example, 1/4). Reduce by ~ 1/2).

In the battery unit 6 to be mounted, a battery body 6a for accumulating the electric power set in consideration of various conditions as described above is housed in the battery unit case 6b.
In this embodiment, electric power is supplied to the electric motor of the electric assist unit 3.

Similarly, in the embodiment shown in FIG. 1, the battery case 6b has a stand pipe 7 integral with the main frame 2.
An engaging groove 9 which is fitted and supported from above on an engaging support bracket 8 having an upper part and a lower part attached behind it is provided on the front surface, and the lower end surface of the battery case 6b has a lower end surface of the electrically assisted bicycle 1. A connector 1 that is fitted to a cup-shaped receiving seat 10 attached to a main frame 2 and is connected to terminals 11a and 11b provided on the inner bottom surface of the cup-shaped receiving seat 10.
2 is provided so that electrical connection with the electric assist unit 3 is possible at the same time as the fitting.

When the lock groove 13 formed on the outer surface of the lower end of the battery case 6b is fitted in the cup-shaped seat 10, for example, the main frame 2 of the electrically assisted bicycle 1 is used.
It is provided so that the lock can be locked by the lock pin 16 of the lock lock 15 fixed to the frame side.

Next, an on-vehicle charging device 18 for an electrically assisted bicycle according to the present invention will be described with reference to an embodiment shown in the drawings. The charger 17 is provided between the lower surface of the battery case 6b and the cup-shaped seat 10. Is located in. That is, the lower portion 17b of the charger 17 is formed in a shape that fits into the inner wall surface 10a of the cup-shaped receiving seat 10 and is fitted to an appropriate depth.
The connector 25 on the outer surface of the lower portion is provided so as to be automatically fitted and electrically connected to the terminals 11a and 11b provided on the inner bottom surface 10b of the cup-shaped seat 10 when it is fitted. The lock pin 16 of the locking lock 15 is fitted into the lock groove 19 of the charger 17 through the through hole 14 so that the charger 17 can be locked on the cup-shaped seat 10.

An upper portion of the charger 17 is formed with a recessed fitting connecting edge 20 conforming to the shape of the lower outer surface of the battery case 6b to be mounted, and an engaging portion 21 opening to the bottom bottom surface of the battery case 6b. A pair of engaging claws 22 and 22 which are fitted in 21 are formed to project from the upper surface 17a, and when the pair of engaging claws 22 and 22 are pressed from the outside to the inside,
A spring plate 23 for supporting the pair of engaging claws 22, 22, respectively.
23 is curved inward as a center to release the engagement between the engaging claws 22 and 22 and the engaging portions 21 and 21 of the battery case 6b,
The battery unit 6 is provided so as to be opened. The engaging claw 22 and the spring plate 23 are integrally provided as shown in FIG. As shown in FIG. 2, the base end of the spring plate 23 is fixed to the inner wall of the charger 17 with screws.

An upper surface 17a on the inner side of the recessed fitting connecting edge 20 of the charger 17 has terminals 24a, 24b for coupling with the connector 12 opening at the lower end of the battery case 6b.
24c and 24d. Of these, the terminal 24a,
24b is the terminals 11a and 11b of the cup-shaped catch 10
The terminals 24c and 24d are also output terminals of the charger 17 together with the terminal 24a.

On the lower portion 17b of the charger 17, as described above, the terminal 1 provided on the inner bottom surface 10b of the cup-shaped seat 10.
Since it is provided with the connector 25 that is coupled to the 1a and 11b, the electric power of the battery section 6 is supplied to the electric motor of the electrically assisted bicycle 1 through the charger 17.

Since the charger 17 is provided with a connector 26 for connecting to a power source, if a cord 27 is connected to the connector 26, the charger 17 automatically starts charging, and at the same time, the charging indicator lamp 28 lights up to charge the battery. The charging indicator lamp 28 is turned off when charging is completed anywhere within a short time, for example, when charging is completed. Then, the electric assist traveling can be performed again.

When the charger 17 and the battery section case 6b of the battery section 6 are connected, the engaging claws 22 and 22, as shown in FIG. 4, upwardly move the upper edges of both side surfaces of the cup type seat 10. When the cover portions 10c and 10c are extended to form the cover portions 10c and 10c, they are hidden in the cover portions 10c and 10c, so that the engagement cannot be released.

Further, as shown in FIG. 5, the engagement pawls 2 for connecting the part of the frame 29 to be connected to the main frame 2 of the electrically assisted bicycle 1 battery portion 6b and charger 17
It may be formed on the closing cover portion 29a that covers the outside of the second and second members 22. Although not shown, the closing cover portion may be provided by a member attached to the frame connected to the main frame 2.

As shown in FIG. 6, the battery case 6b
Inside, the terminal 24c of the charger 17 and the thermistor 30 are arranged from the connector 12 to the battery body 6a and connected to the negative pole, and similarly, the terminal 24d and the fuse 31 are connected to the positive pole. Similarly, the terminal 24a is connected to the negative electrode of the battery body 6a and the terminal 24b
Are connected to the positive electrodes via fuses 32, respectively.

Terminals 24a arranged on the upper and lower surfaces of the charger 17,
24b, 24c, 24d and the connector 25 electrically connect the power supply circuit from the battery part 6 to the terminals 11a, 11b of the cup-shaped seat 10 and connect the charging circuit from the charger 17 to the battery part 6. . Further, the battery unit 6 can be directly connected to the cup-shaped receiving seat 10 by removing the charger 17.

In addition, the terminals 24 arranged on the upper surface of the charger 17
a, 24b, 24c, 24d and cup type seat 10
The terminals 11a, 11b provided on the inner bottom surface 10b of the plate are provided in a row so that their respective plate surfaces face each other at required intervals.

[0024]

As described above, the vehicle-mounted charging device for an electrically assisted bicycle according to the present invention can be used as a single battery unit by appropriately removing the charger. , Which can be connected to an outlet of a power source, and can charge a battery unit mounted on an electrically assisted bicycle to restore power.

Further, as described above, the terminals provided on the upper surface of the charger and the inner bottom surface of the receiving seat are arranged in a row so that the plate surfaces face each other at a required interval, so that the size is reduced and the connector is made smaller. By strengthening the engagement by the engaging claws of the battery unit and the charger by connecting to, it is possible to achieve a strong connection that can withstand vibration and the like as a whole.

The on-vehicle charging device for an electrically assisted bicycle according to the present invention is capable of supplying power only by the battery part, easily connecting and disconnecting the battery part and the charger with one touch, and connecting the charging / discharging terminals for electrical connection. The physical connection is reinforced, the connection between the battery section and the charger is ensured and strong, and the structure is simple and can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a side view of an electrically assisted bicycle equipped with an embodiment of the in-vehicle charging device for an electrically assisted bicycle of the present invention.

FIG. 2 is a perspective view of the vehicle-mounted charging device for an electrically assisted bicycle according to the embodiment, which is disassembled into a battery unit, a charger, a cup-shaped seat and a lock for locking.

FIG. 3 is a perspective view of an engagement claw and a spring plate arranged on an upper portion of the charger.

[4] Some of the side walls of the cup-shaped seat to extend upward perspective view showing an embodiment of forming a closure cover section covering the outside of the engagement pawls for coupling the charger and the battery portion is there.

[5] The portion of the frame connected to the main frame of the power-assisted bicycle in a perspective view illustrating an embodiment of forming a closure cover section that covers the outer engaging <br/> pawl connecting the charger and the battery portion is there.

FIG. 6 is also a circuit diagram showing a power supply connection circuit for an assist motor of an electrically assisted bicycle in the vehicle-mounted charging device for an electrically assisted bicycle according to the present invention, in which the terminals of the battery section, the charger, and the cup-shaped seat are connected. FIG. 3 is a block connection diagram showing a charging connection circuit for connecting a commercial power plug to a charger and connecting to a battery section.

[Explanation of symbols]

1 Electric assist bicycle 2 mainframe 3 Electric assist unit 4 crankshaft 5 pedals 6 Battery section 6a Battery body 6b Battery case 7 Standpipe 8 Engagement support bracket 9 engagement groove 10 cup type seat 10a inner wall surface 10b inner bottom 10c cover 11a terminal 11b terminal 12 connectors 13 Lock groove 14 through holes 15 Lock for lock 16 lock pins 17 charger 17a upper surface 17b lower part 18 In-vehicle charging device for electric assist bicycle 19 Lock groove 20 Recessed fitting connection edge 21 Engagement part 22 Engaging claw 23 Spring board 24a terminal 24b terminal 24c terminal 24d terminal 25 connector 26 connectors 27 codes 28 Charge indicator 29 frames 29a Closure cover part 30 thermistor 31 Hughes 32 fuse

Continuation of the front page (56) References JP-A-11-8941 (JP, A) JP-A-10-112358 (JP, A) JP-A-8-268361 (JP, A) JP-A-9-123967 (JP , A) JP-A-9-16749 (JP, A) JP-A-4-358986 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B62J 9/00 B62M 11/00

Claims (3)

(57) [Claims] 1. An in-vehicle charging system for an electrically assisted bicycle, wherein a battery charger is connected between a battery case and a seat that supports the battery case by a connecting means to be mounted on a vehicle so that the battery section can be charged. In the battery charger, the lower end of the battery case and the upper end of the charger fit into each other, and at the same time, they are electrically and physically connected by the charging / discharging terminals arranged on the corresponding surfaces of the lower end of the battery case and the upper end of the charger. with each other engaging the an engagement pawl provided in the charger and the engaging portion provided in the battery unit, opened, and electrically and physically connecting the battery unit to the seat to remove the charger electric to In-vehicle charging for an electrically assisted bicycle characterized by assisted traveling and connecting a charger to a battery part to electrically and physically connect to a seat so that the vehicle can be electrically charged in a standby state where charging can be performed anywhere. apparatus. 2. The vehicle-mounted type for an electrically assisted bicycle according to claim 1, wherein the engagement claw is covered and stored in a receiving seat in a state where the battery case and the charger, which are combined, are mounted on the vehicle. Charging device. 3. The on-vehicle charging device for an electrically assisted bicycle according to claim 1, wherein the engagement claw is covered by the vehicle body frame member in a state in which the battery case and the charger, which are coupled to each other, are mounted on the vehicle body frame member.