JPH0512934Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a charger for charging rechargeable batteries used in electric toys and the like.

2. Description of the Related Art Recently, electric toys equipped with a storage battery and a small motor operated by the battery, such as a running toy sewing machine, have become popular as toys for children. Naturally, this toy requires the storage battery to be replaced, but it is undesirable in terms of handling, and there is a tendency to use rechargeable batteries. Charging is required in this case as well, but with chargers for this purpose, storage batteries are frequently damaged due to charging mistakes due to incorrect operation, and charging mistakes are extremely important. There is a demand for a type that is easy to handle and inexpensive.

In view of these demands, it is an object of the present invention to provide a charger with a simple configuration and low cost, which has the advantage of completely and automatically preventing charging errors.

The present invention provides a charger in which a container capable of storing dry batteries is provided with an electric circuit connected to the dry batteries and including a manual switch, and a charging connector is connected to this electric circuit via a conductive wire. A conductive plate that can come into contact with one pole of the dry battery, and a conductive plate or a coil spring that can come into contact with and separate from the other pole of the dry battery are removably arranged opposite each other in the container, and the dry battery is placed in the container so that the electrode thereof is in a predetermined position. A charger characterized in that one of the conductive plates is installed in an insertion/removal part for inserting a dry battery electrode formed by a protrusion or a battery support plate so that a current-carrying circuit is formed only when the charger is stored in the direction shown in FIG. It is.

The present invention will be explained in detail below using illustrated embodiments. In the embodiment shown in FIGS. 1 to 3, 1 is a container made of plastic, 2 is a push button switch, 3 is a charging connector, and 4 is a conductive wire coated with vinyl chloride. This container 1 includes a storage part 1a that can store one or more dry batteries 5 in series, and a lid part 1 that is fitted and locked into the storage part 1a.
The storage part 1a has a structure in which a switch 2 is provided at one end in the longitudinal direction of the case, and a recess 6 at the opposite end into which the protrusion of the positive electrode of a dry battery 5 can be inserted and removed. is formed by two protrusions 7, 7, and a conductive plate 8 having a spring action and serving as a terminal is fitted and locked in a groove formed in these protrusions. The switch 2 is shown in FIGS. 4 to 7.
As shown in the figure, a button-shaped member having a long-diameter head at one end of the cylindrical body is arranged so as to be slidable along a circular hole formed in the center of an annular body 9 provided at one end of the storage part 1a. A plate spring-shaped conductive plate 10 serving as one terminal is attached to the inner wall of the housing portion 1a with machine screws 11 so as to always come into contact with the head regardless of whether the switch 2 is pressed.

A conductive wire 4 is connected to each of the conductive plates 8 and 10, the ends of which are connected to the terminals of the connector 3, and an electric circuit including the connector 3, the conductive plate 8, the dry battery 5, and the conductive plate 10 is connected to the switch 2. The container 1 is configured so that it can be opened and closed by.

In this embodiment, the distance between the two conductive plates 8, 10 is set to be slightly larger than the total length of the two dry batteries 5, 5, so that it is difficult to store and take out these dry batteries in and out of the storage section 1a. This can be done very easily, but by placing protrusions near the conductive plate 10 so as to prevent direct contact between the negative electrode of the dry battery 5 and the conductive plate 10 when the switch 2 is not pressed so that they face each other in the housing 1a. It is also possible to provide a spring coil which is disposed on the inner wall of the battery and which also functions as a conductive member surrounding each projection 7, and the dry battery is clamped and fixed by this coil and the projection.

In this embodiment, as shown in FIG. 2, the dry battery is stored with its positive electrode facing the conductive plate 8, and the switch
When pressed, the head contacts the negative electrode of the dry battery 5 via the conductive plate 10, pushing the dry battery 5 toward the conductive plate 8, as shown in FIGS. 6 and 7. In this way, the conductive plate 10, the two dry batteries, and the conductive plate 8 are in a contact energized state, and a charging operation can be performed by connecting the connector 3 in advance to a charging connector (not shown) of the storage battery to be charged.

When the dry battery 5 is stored in the opposite direction, since there is no protrusion on the negative electrode side of the dry battery, the negative electrode comes into contact with the conductive plate 8 even if the switch 2 is pressed (protrusion 7 interferes). Can not.

In this way, this charger can perform charging operation only when the dry battery 5 is stored in the specified direction under normal conditions as shown in Figure 2. Therefore, the trouble of damage to the storage battery due to reverse insertion of the dry battery can be avoided without fail. It is something that can be prevented.

Next, in the embodiment shown in Figs. 8 to 16, the container 1 is constructed by combining a storage section 1a for the dry battery 5 with a lid section 1b, as in the previous embodiment.
A rubber ring 21 is attached to the conductive wire 4, and serves as an outlet for preventing the conductive wire 4 from being damaged.
Reference numeral 23a denotes a protrusion that is fitted into the holes 22b and 23b, and is used as an engagement portion between the storage portion 1a and the cover portion 1b, and is provided at a corresponding position. Reference numeral 24 denotes the storage portion 1a.
The battery support plate 24 is fitted into a recess formed on the annular body 9 side of the battery support plate 24a. The support plate 24 has a hole 24a for inserting and removing the protrusion of the positive electrode of the battery 5 at the center thereof, and a small screw 11 is attached to the surface of the switch 2 side.
The conductive plate 10 is disposed so as to face the insertion hole 24a and to be deformed by the pressure of the switch 2 so that a part of it moves into the insertion hole 24a.

Further, the storage portion 1a has an insertion hole 2 for the conductive wire 4.
5 and a recess 26 that serves as a guide groove formed by protrusions 27 and 28, and is formed so that a conductive coil spring 29 to which a conductive wire is connected can be fitted into the recess 26. . 30 in the diagram
31 is a linear protrusion formed on the bottom surface near the side wall of the storage portion 1a, and 31 is a protrusion formed on the inclined surface of the side wall. As a result, the conductive wire is fitted and locked between the protrusion 30 and the inclined surface. A locking groove 32 is formed for locking the conductive wire, and since projections 31 are dotted on the inclined surface so as to face the locking groove 32, locking and disconnecting the conductive wire can be done extremely easily and reliably. It has the advantage that it does not get in the way at all when taking in and out the dry battery, and to lock the conductive wire, it is only necessary to push it into the locking groove.

Note that the switch 2 and the battery support plate 24 are
Those shown in FIGS. 8 and 19, and FIGS. 20 and 21 are used. 33 is the machine screw 11
The insertion hole 34 is a locking groove for locking the conductive wire 4. When the dry cell battery 5 is stored as shown in Fig. 17 and the switch 2 is pressed, the conductive plate 10 is moved as shown in Fig. 19.
The conductive plate 10 deforms as shown by the dotted chain line and comes into contact with the protrusion of the positive electrode of the dry battery 5 inserted into the insertion/removal hole 24a.
The two dry batteries and the coil spring 29 are energized, and the rechargeable battery mounted on the toy can be charged via the connector 3.

In this case, since the coil spring 29 is provided, the dry battery is clamped and fixed between the support plate 24 and the coil spring 29, so that the dry battery does not wobble and can be easily inserted and removed.

Furthermore, when the dry battery 5 is stored in the container 1 in the opposite direction to the above, since the support plate 24 is interposed on the negative electrode side, contact between the conductive plate 10 and the negative electrode does not occur even if the manual switch 2 is pressed. Therefore, charging is not possible.

As described above, in each of the examples, the container 1 is made of plastic and is lightweight and easy to manufacture.Since the dry batteries are stored in series, the container 1 has a small diameter and is small enough that even children can easily grasp it. The switch is a push-button type and can be operated with a single touch, making it easy to handle.There are no obstructions around the battery compartment, making it easy to take it in and out.The structure is simple and durable because it does not use a complicated mechanism. Excellent in
It is difficult to break down even if handled roughly, has a simple appearance, and can be manufactured at low cost.

In addition, in the present invention, a conductive plate with the same area as the front end surface of the switch 2 on the dry battery side is attached, and a spring is provided on the surface of the battery support plate 24 on the switch 2 side so that the switch 2 is always opposite to the dry cell battery. The conductive plate may be configured to be pressed toward the side, and the electric circuit may be disconnected or disconnected by displacement of the conductive plate. In addition, the container 1 may be configured to store dry batteries in parallel instead of in series, or may be configured to store only one battery. Alternatively, the container 1 may be divided into two in the longitudinal direction, and the pilot lamp may be placed so that it can be seen from the outside, for example, to ensure that the batteries are stored in the correct direction. The lamp may be turned on only occasionally.

The present invention includes a manual switch and a conductive plate that can come into contact with one pole of a dry cell battery, and a conductive plate or a coil spring that can come into contact with and separate from the other pole of the dry cell battery. ,
In order to form a current-carrying circuit only when the dry battery is housed in the container with its electrode in a predetermined direction, one of the conductive plates is attached to the insertion/removal part for inserting the dry battery electrode formed by the protrusion or the battery support plate. By arranging the battery, the dry cell conduction mechanism consisting of a manual switch, conductive plate, and connector can be easily installed and installed in the container, and the positive electrode of the battery can be placed in a regular position, making it possible to prevent the battery from being inserted backwards due to malfunction. In this case, current does not flow in the opposite direction to the specified direction to the storage battery being charged, so there are no charging mistakes and damage to the storage battery can be reliably prevented, and it is easy to handle, and the charging operation can be performed completely and is extremely simple. It has practical benefits such as being suitable for mass production as a charger with a unique shape.

[Brief explanation of drawings]

1 to 7 show an embodiment of the present invention,
Figure 1 is a perspective view, Figure 2 is a plan view showing the correct storage state of dry batteries, Figure 3 is an electrical circuit diagram, and Figure 4 is an electrical circuit diagram.
5 is a perspective view of the main parts forming the electric circuit, FIG. 5 is a perspective view of the switch, FIGS. 6 and 7 are explanatory diagrams of the operation of the switch, and FIGS. 8 to 21 show other embodiments. 8 is a perspective view, FIG. 9 is a front view of the storage section, FIGS. 10, 11, and 12 are a right side view, a left side view, and a plan view, respectively.
Figure 3 is a front view of the lid, Figures 14, 15, and 16 are its right side view, left side view, and plan view, respectively. Figure 17 is a plan view showing the correct storage state of the dry battery, and Figure 18 is a top view of the lid. The figure is a plan view of the switch, Figure 19 is a sectional view thereof, Figure 20 is a surface view of the battery support plate,
FIG. 21 is a back view thereof. 1... Container, 1a... Storage section, 1b... Lid section,
2... Switch, 3... Connector, 4... Conductive wire, 5... Dry battery, 6... Recess, 7... Protrusion, 8
... Conductive plate, 9 ... Annular body, 10 ... Conductive plate, 1
1... Machine screw, 21... Rubber ring, 24... Battery support plate, 24a... Insertion/removal hole, 29... Coil spring, 30, 31... Protrusion, 32... Locking groove.

Claims (1)

[Claims for Utility Model Registration] (1) An electric circuit connected to the dry battery 5 and including a manual switch 2 is provided in a container 1 capable of storing a dry battery 5, and a conductive wire 4 is connected to the electric circuit for charging. In the charger to which the connector 3 is connected, a conductive plate 10 that can come into contact with the manual switch 2 and one pole of the dry battery 5, and a conductive plate 8 or a coil spring 29 that can come into contact with and separate from the other pole of the dry battery 5 are attached to the container 1. Dry batteries formed of protrusions 7 or battery support plates 24 are arranged removably and facing each other in the container 1, and a conductive circuit is formed only when the dry batteries 5 are housed in the container 1 with their electrodes oriented in a predetermined direction. A charger characterized in that one of the conductive plates 8 and 10 is installed in an insertion/removal section for inserting an electrode. (2) The container 1 is the battery support plate 2 of the dry battery 2.
Utility model registration claim 1, which has a locking recess into which a conductive wire is fitted, and a projection 30 is provided with a locking groove 32 for locking a conductive wire.
Charger as described in section.