JPH0331004Y2 - - Google Patents

Description

[Detailed description of the invention] "Purpose of the invention" (Prior art) As shown in FIG. There is a battery pack 23 and a large battery pack 24 that has an approximately "L" shape in cross section, but in order to be able to charge these two types of battery packs with a common charger, conventionally, a common charger body 25 has been used. In the case of a small battery pack, a fixing member 27 as shown in FIG.
3a, and in the case of a large battery pack, the fixing member 27 is removed. There is also another method in which the direction of the battery pack to be loaded is changed.

(Problems to be Solved by the Invention) This is a problem in the type of charger that uses a fixing member as described above because the fixing member 27 must be attached or removed each time a large or small battery pack is charged. This is troublesome, and in the case of a type in which the direction of the battery pack can be changed, there are drawbacks such as loading the battery pack in the wrong direction and loading it in a troublesome manner.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional charger, and by providing a retractable engaging member in the common filling port, it is possible to accurately lock and fix a small battery pack when loading it, and also to make it possible to accurately lock and fix a small battery pack when loading it. To provide a battery charging device which does not cause any hindrance when loading a battery pack.

"Structure of the invention" (Means for solving the problems) The battery pack charging device according to the invention is
A common battery loading port is formed in the charger body so that a large battery pack and a small battery pack can be loaded interchangeably, and a common battery loading port is provided in the battery loading port via a spring means so that the battery pack can be inserted and retracted freely. an engaging member configured to engage and hold the side edge of the small battery pack when the battery pack is loaded, and to be buried by being pressed by the large battery pack when the large battery pack is loaded. ing.

(Function) When a small battery pack is loaded into the battery loading port, the locking part of the engaging member engages with the engaging part formed on the side surface of the battery pack and is properly fixed. When the battery pack is loaded, the retractable engaging member is pressed by the battery pack and buried, causing no problem.

(Embodiment) An embodiment of the battery pack charging device according to the present invention will be described based on FIGS. 1 to 5.
The charger main body 1 includes a normal small battery pack 2 and a large battery pack 3 having a bent portion 3a on the rear end side and having an approximately "L" shape in cross section.
A common battery loading port 4 is provided so that the batteries can be loaded interchangeably. The battery loading port 4 has a stepped bottom portion 5, so that the cross-sectional shape of the loading port is approximately L-shaped, and the large battery pack 3 can be loaded therein. At this time, the bent portion 3a fits into the recess 4a.

An engaging member 6 is disposed on the side wall surface 5a of the bottom portion 5 on the side of the recess 4a through a spring means 7, and is retractable. It is configured to engage with and hold the side edge 2a of the large battery pack 3, and to be buried by being pressed by the bottom surface of the large battery pack 3 when the large battery pack 3 is loaded.

To explain in detail the structure and arrangement means of the fixing member 6 described above, the fixing member 6 has a plate shape, and locking claws 6a are formed near both sides of the upper edge, and in the center of the upper edge. The spring seat 6b is bent. Further, on the lower side of the locking claw 6a, there is a side wall surface 5a.
An elastic stopper 6c is secured to the upper part of the recess 5d.
is formed to prevent the fixing member from coming off.

Guide grooves 8 are formed on both sides of the wall surface 4b of the battery loading port 4 along the side wall surface 5a of the bottom section 5, and by inserting both sides of the fixing member 6 into the guide grooves 8, the fixing member 6 can be moved up and down. It is arranged so that it can slide freely. Cutouts 5b and 5c corresponding to the locking pawl 6a and spring seat 6b are formed on the upper surface of the bottom portion 5, respectively, and the recess 5d is formed below the cutout 5b.
Further, a spring hole 9 into which the coil spring 7 is inserted is bored in the notch 5c. When assembling, the coil spring 7 is inserted into the spring hole 9 and the fixing member 6 is inserted into the guide groove 8, and the elastic stopper 6c is engaged by the upper part of the recess 5d as shown in FIG. 3C. It can be stopped at the position where it is stopped. As a result, the amount of upward protrusion of the fixing member 6 is restricted, so that the fixing member 6 protrudes from the upper surface of the bottom portion 5 by a predetermined amount, and the fixing member 6 is also prevented from coming off. In addition, in the figure, 11 is a charging terminal exposed on the bottom surface part 5.

Next, to explain an example of operation, as shown in FIG. 4, when the small battery pack 2 is loaded into the battery loading port 4, the locking pawl 6a of the fixing member 6 engages with the engaging portion 2a of the battery pack 2. It is fixed accurately. Furthermore, when the large battery pack 3 is loaded into the battery loading port 4, the entire fixing member 6 is pressed and buried under the bottom surface of the large battery pack 3, and the upper edge of the fixing member is flush with the top surface of the bottom part 5, so there is no problem when loading. It will not be a hindrance.

"Effects of the Invention" According to the battery pack of the present invention, when a small battery pack is loaded into the battery loading port, the engaging member engages with the engaging part formed on the side surface of the battery pack, thereby ensuring accurate operation. The engaging member, which is fixed and retractable when a large battery pack is loaded, is pressed and buried by the battery pack, and does not pose any problem during loading.

In this way, large or small battery packs can be easily loaded as replacements, and unlike conventional chargers, there is no need to consider the orientation of the battery pack or to attach or detach the fixing adapter each time. do not have.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the battery pack charging device according to the present invention, FIG. 1 is a side view of the battery pack, FIG. 2 is an overall plan view, and FIG. 3A is a main part. Exploded perspective view, Figure 3B is a partially cutaway perspective view of the main part, Figure 3C is a sectional view when the elastic stopper is engaged, Figure 4 is a sectional view when the small battery pack is loaded, Figure 5 is the large battery pack. FIG. 3 is a cross-sectional view when the pack is loaded. FIG. 6 is a side view showing an example of loading a battery pack into a portable wireless communication device, and FIG. 7 is a sectional view showing a conventional charger. 1: Charger body, 2: Large battery pack,
3: Small battery pack, 4: Battery loading port, 5: Bottom part, 6: Fixing member, 7: Spring means.

Claims (1)

[Scope of utility model registration request] A battery loading port is formed in the charger body so that a large battery pack and a small battery pack can be loaded interchangeably, and a battery loading port is provided in the battery loading port so as to be freely retractable via a spring means. The engaging member is configured to engage and hold the side edge of the small battery pack when the battery pack is loaded, and to be buried by being pressed by the large battery pack when the large battery pack is loaded. A battery pack charging device characterized by: