JPS5829564Y2 - Charger for battery packs and battery pack loading equipment - Google Patents

Description

[Detailed explanation of the invention] Devices that are powered by secondary batteries and require spare batteries, such as portable radios that are frequently used, are generally used when going out and carrying the radio. While you're there, you'll need to charge your spare batteries in preparation for the next use.

In this case, in order to make the battery part easy to handle, the secondary battery is mainly housed in a case made of synthetic resin, and the power supply part is made with the charging and discharging contacts exposed. (referred to as a battery pack).

The battery pack and the device loaded with the battery pack (hereinafter referred to as the device) can be easily integrated or detached using springs, etc., and the electrical connection can be made/disconnected when they are attached or detached. It is configured as follows.

Furthermore, the charging contacts of electric and deaf packs are generally exposed to the outside even when they are loaded into equipment.

As a charger for devices configured as above,
It is desired that the structure be such that both the battery pack alone or the device loaded with the battery pack can be easily charged by a single charger by simply placing the battery pack on the charger.

In order to meet this demand, various efforts have been made in the past. For example, as shown in FIG. There are some devices that are formed so that their longitudinal directions intersect with each other.

In other words, in this example, as shown in FIG.
By inserting the battery pack 2 into the insertion hole 4, the charging contacts 6, 6' of the battery pack 2 come into contact with the charging contacts 7, 7' of the charger main body 1 shown in FIG. 3, and charging can be performed.

In addition, when charging only the battery pack 2, insert the battery pack 2 into the insertion hole 5 of the charger body 1 as shown in FIG.
When inserted into the charging contact 6. of the battery pack 2. C is the third
Since it comes into contact with the charging contacts 8, 8' of the charger main body 1 shown in the figure, charging can be performed.

In addition, the electrical connection is as shown in Fig. 4.
The charging contacts 7゜7' and 8,8' are charged in parallel.
Connected to circuit 9.

Although the above example has been devised, the shape and dimensions of the charger main body 1 become large because the device 3 and the battery pack 2 are inserted into the insertion hole 4.5 in an intersecting manner, and the charger main body 1 This tends to create a large amount of unnecessary space inside the device, and since charging contacts must be formed in parallel, the number of contacts increases, the shape is complicated, and assembly time is required.

The present invention has been devised to solve the above-mentioned conventional problems, and the present invention will be explained below based on drawings showing embodiments thereof.

5 to 8, 11 is a charger body, and this charger body 11 is a single battery pack 12 or a battery pack 1.
One recess 14 is formed into which any of the devices 13 loaded with 2 can be inserted.

Reference numeral 15 denotes a pair of ribs formed on opposing inner walls of the recess 14 so as to protrude inward and face each other in the vertical direction.

Reference numeral 16 denotes a pair of grooves that fit into the pair of ribs 15, and the pair of grooves 16 are formed on opposing side surfaces of the battery pack 12 so as to face each other in the vertical direction.

FIG. 5 shows a state where the battery pack 12 alone is attached to the recess 14 of the charger main body 11. In this case, a pair of grooves 16 formed in the battery pack 12 and a recess 14 formed on the charger side are shown. By fitting with the pair of ribs 15, the battery pack 12 is erected and the contacts are positioned.

FIG. 6 shows a state in which a single battery pack 12a with grooves 16a located at the side edges is mounted in a recess 14 of a charger main body 11 having a pair of ribs 15. When charging only the battery pack 12, as shown in FIG.
When inserting a alone, a pair of ribs 1 on the side of the charger body 11
5 and the pair of grooves 16a on the battery pack 12a side, the battery pack 12a itself enters reliably into the recess 14, and the pair of charged contacts 17, 17a provided on the bottom surface of the battery pack 12a are inserted into the recess. Since it comes into contact with a pair of charging contacts 18 and 18a provided on the inner bottom surface of the battery 14, charging is performed.

Furthermore, when the battery pack 12a is loaded into the device 13, the groove 16a is secured in the loaded state as shown in FIG. When inserted, the pair of ribs 15 on the side of the charger body 11 and the pair of grooves 16a of the battery pack 12a engage with each other, so that the device 13 loaded with the battery pack 12a is securely inserted into the recess 14, and the battery pack 12a Just like when charging a single battery, the charging contacts 17, 17a of the battery pack 12a come into contact with the charging contacts 18.degree. 18a of the recess 14, so that charging is performed.

The charging circuit at this time is shown in FIG. 9, where 19 is a charging system circuit.

In addition, in the above embodiment, the battery pack 12° 12a
Although a pair of grooves 16, 16a are formed on the sides and a pair of ribs 15 are formed in the recess 14 on the charger main body 11 side, as shown in FIG. Even if a pair of ribs 15 are formed on the battery pack 12 side and a pair of grooves 16 are formed in the recess 14 on the charger main body 11 side, the same effect as in the above embodiment can be obtained.

As described above, the present invention provides the following various practical effects.

(1) The desired purpose can be achieved by providing only one pair of charging contacts on the charger body for both a single battery pack and a device loaded with a battery pack, which simplifies the structure and facilitates manufacturing. You can get a charger.

(2) Conventional chargers have orthogonal recesses so that they can charge either a single battery pack or a device loaded with a battery pack. Dead space will remain, but
In the present invention, it is sufficient to have a recess that is large enough to accommodate a device loaded with a battery pack, and the charger can be miniaturized by the amount of lateral protrusion required in the past.

(3) When charging only the battery pack by inserting it into the recess of the charger body, the present invention uses a pair of ribs or a pair of grooves provided vertically opposite each other on the opposing inner walls of the recess. Since a pair of grooves or a pair of ribs that are vertically opposed to each other on opposite sides of the battery pack are fitted together, the battery pack itself will not fall over in the recess. This improves usability, and also reliably prevents the battery pack from shifting in its recess, preventing contact between the charging contacts and the charged contacts due to the battery pack shifting. This eliminates the possibility of the batteries becoming separated, and therefore charging can be performed in a stable state at all times.

Moreover, the combination of ribs and grooves prevents reverse insertion as shown in Fig. 11 when only the battery pack is inserted into the recess for charging. Therefore, reverse charging due to reverse insertion can be prevented. There will be no more occurrences.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional charger and battery pack loading equipment.
Figure 2 is a perspective view of a conventional charger and battery pack;
The figure is a plan view of a conventional charger, Figure 4 is a schematic electrical circuit diagram of a conventional charger, and Figures 5 and 6 show an embodiment of the present invention in which a battery pack is attached to a charger. 7 is a perspective view of the charger and battery pack alone, FIG. 8 is a perspective view of the charger and battery pack loading equipment,
Fig. 9 is a schematic diagram of the electric circuit of the charger, Fig. 10 is a partial cross-sectional plan view showing a battery pack attached to a charger according to another embodiment of the present invention, and Fig. 11 is a schematic diagram of the charger. FIG. 3 is a perspective view showing an example of preventing incorrect insertion of a single battery pack. 11, 11a, 1lb...charger body,
12゜12a, 12b, 12c...Battery pack, 13
---Equipment, 14---Concavity, i5, 15at15b.
...Rib, 16.16a, 16b, 16c...Groove,
17° 17a...Charging contact, 1B, 18a...Charging contact.

Claims (1)

[Scope of utility model registration request] In order to be able to charge either a single battery pack or a device loaded with a battery pack, a recess into which the battery pack can be inserted is provided in the main body of the charger, and the inner bottom of this recess has the battery nozzle. A pair of charging contacts is provided at a position where a pair of charging contacts provided on the recess are in contact with each other, and further, at least when the battery NO rack body is inserted into the recess, a pair of charging contacts are provided in a direction perpendicular to the opposing inner walls of the recess. A pair of ribs or a pair of grooves provided opposite each other and a pair of grooves or two pairs of ribs provided opposite each other in a vertical direction on opposite sides of the battery pack are fitted into each other. A battery pack and a charger for battery pack loading equipment.