JPH03182221A - Charging device for charging type electrical appliance - Google Patents

Abstract

PURPOSE:To prevent the natural fall of a charging device, and also to suppress the overheating of a transformer by providing a connecting terminal by which the projected part of the charging device is connected to a power-supply terminal for supplying electricity to a charging circuit when it has been inserted into the opening of the socket of a central cleaner. CONSTITUTION:The socket 2 of a central cleaner 1 is arranged on an indoor wall or the like, and when a hose 3 is inserted, it constitutes an air intake passage, and also supplies a power-supply voltage to a motor-dirven suction tool 6 at the end of the hose 3 via power-supply terminals 4, 5 in the vicinity of the opening in the inside of the socket 2. In such a condition that the projected part 8 of a charging device 7 has been inserted into the socket 2, the connecting terminals 9, 10 on the charging device 7 side are connected to the power-supply terminals 4, 5 on the socket 2 side, thereby a power-supply voltage is supplied to a charging circuit 11. Thus, since the projected part 8 being inserted into the socket 2 is constituted on the charging device 7 side, the falling-down of the charging device 7 from the socket 2 can be prevented. Further, since the heat generated by a transformer which has been housed in the inside of the opening of the socket 2 is cooled by the intake air flow of the central cleaner 1, the overheating of the transformer can be suppressed.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a charger for a rechargeable electrical appliance.

2. Description of the Related Art A conventional charger for a rechargeable electric appliance will be described with reference to FIG. In FIG. 4, a rechargeable electric appliance 21
has a built-in rechargeable battery 22, and a charger 23 charges this rechargeable battery 22.

The charger 23 is inserted into a household power outlet 25 using a parallel plug 24, and the charger 23 is connected to a built-in transformer 2.
6, a low voltage is generated and the charging battery 22 is charged via the charging circuit 27. In this way, by using the transformer 26, the circuit is simple and moreover, power can be supplied safely.

Furthermore, once charging of the charging battery 22 is completed.

Next, the charger 23 is temporarily unnecessary until the charging battery 22 needs to be charged.

Problems to be Solved by the Invention In the configuration of a charger for such a conventional rechargeable electric appliance,
Since the charger 23 is held only by the contact pressure between the parallel plug 24 of the charger 23 and the household power outlet 25, the difference in household power supply may occur due to the weight of the transformer etc. built into the charger 23. The charger 23 could sometimes come off from the inlet 25, resulting in a risk of injury and the impact of falling, resulting in poor charging operation due to breakage of the transformer windings, etc. In addition, the charger 23 is often left plugged into the outlet 25 even after charging of the charging battery 22 is completed, and heat is constantly generated in the primary winding of the transformer 26 inside the charger 23. There was also a risk of fire.

The present invention solves the above-mentioned conventional problems, and is capable of charging rechargeable electric appliances by preventing them from falling naturally from outlets for supplying power, and by suppressing overheating of transformers. The purpose is to provide equipment.

Means for Solving the Problems In order to solve the above 11M, a charger for a rechargeable electric appliance of the present invention is a charger for charging a rechargeable battery built into a rechargeable electric appliance, and is installed on an indoor wall or the like. It has a protruding part that can be inserted into the opening of the central cleaner's outlet, which can be connected to the power supply terminal that drives the electric suction tool at the end of the hose, and can be used for cleaning. The charging device further includes a connection terminal that is connected to the power supply terminal and supplies power to the charging circuit when the protrusion is inserted into the opening of the insertion port.

Furthermore, in addition to the above configuration, the charger for a rechargeable electric appliance according to the present invention is provided with a protrusion inserted into the opening of the outlet of the central cleaner, interposed between the connection terminal and the charging circuit, and an electric suction It is equipped with a transformer that generates a power supply voltage that is different from the power supply voltage of the equipment.

Operation With the above configuration, the rechargeable battery of the rechargeable electric appliance is charged by inserting the protrusion formed on the charger into the opening of the outlet of the central cleaner, so that the protrusion is inserted deeply and securely into the outlet. This prevents the charger from easily falling out of the socket. In addition, especially if the power supply voltage of the electric suction device and the power supply voltage of the charger are different and the charger requires a transformer, the transformer can be placed in the protrusion.

Since it is inserted into the opening of the central cleaner's outlet, the transformer that is built into the conventional charger can be stored within the opening of the outlet, reducing the thickness of the charger and allowing it to be removed from the outlet. The weight of the parts is also reduced, which eliminates the risk of the charger falling off. In addition, the heat generated by the transformer is cooled by the intake air flow of the central cleaner, so even if it is left plugged in after charging is complete, the transformer will not overheat and will be safe.

Embodiment One embodiment of the present invention will be described below with reference to the drawings.

Figure ■ shows 1 that is inserted into the outlet of the central cleaner.
FIG. 2 is a sectional view showing the plug-in state of the charger in the first embodiment of the present invention. In FIGS. 1 and 2, the outlet 2 of the central cleaner 1 is placed on an indoor wall, etc., and constitutes an intake path by inserting a hose 3. Power supply voltage is supplied to the electric suction tool 6 at the tip of the hose 3 via power terminals 4 and 5. On the other hand, the protrusion 8 of the charger 7 is inserted into the opening of the outlet 2 of the central cleaner 1,
When the protrusion 8 of the charger 7 is inserted into the outlet 2, the connection terminal 9°10 on the charger 7 side is connected to the power terminal 4 on the outlet 2 side.
5, thereby supplying power supply voltage to the charging circuit 11. By configuring the charger 7 with the protrusion 8 that is inserted into the socket 2, the charger 7 is prevented from falling from the socket 2, unlike a conventional parallel plug. As described above, the charging battery 13 of the rechargeable electric appliance 12 can be safely charged using the charger 7.

FIG. 3 is a sectional view showing the inserted state of the charger in the second embodiment of the present invention, and parts having the same functions and effects as those in the first embodiment are given the same reference numerals and explained. Omitted. In FIG. 3, the power supply voltage supplied from the power supply terminal 4.5 of the outlet 2 is for driving the electric suction tool 6, and therefore may not necessarily match the power supply voltage in the charging circuit of the charger. Therefore, as in the conventional case, a transformer 14 is used to convert the voltage. In this case, transformer 1
4 is disposed within a protrusion 16 formed on the charger 15, and connects the connection terminals 9 and 10 of the charger 15 and the charging circuit 17.
interposed between. This allows the central cleaner 1
When the protrusion 16 of the charger 15 is inserted into the outlet 2 of the transformer 14, the charger 15 will not fall off due to the weight of the transformer 14, unlike in the conventional case. Since the air is cooled by the intake air flow of the central cleaner 1, the battery 19 of the rechargeable electric appliance 18 can be safely charged using the charger 15.

Effects of the Invention As described above, according to the present invention, in order to insert the protrusion provided on the charger into the opening of the outlet of the central cleaner,
Not only can the charger be prevented from falling off like in the past, and there is no danger of injury, but also breakage of transformer windings due to impact from falling can be eliminated. In addition, if the power supply voltage of the electric suction device and the power supply voltage of the charger match,
Cost reductions are expected as no transformer is required. moreover.

If a transformer is required, the transformer can be placed inside the protrusion that is inserted into the socket, so there is no need for the charger to fall off due to the weight of the transformer, and it can be placed in the central cleaner. The intake air flow can cool the transformer, reducing the risk of fire.

[Brief explanation of drawings]

Figure 1 shows what is inserted into the outlet of the central cleaner.
An external view of the charger for the rechargeable electric appliance according to the embodiment of the present invention, FIG. 2 shows the state when the charger for the rechargeable electric appliance according to the first embodiment of the present invention is inserted into the outlet of the central cleaner. 3 is a sectional view showing the state when the charger of the rechargeable electric appliance according to the second embodiment of the present invention is inserted into the outlet of the central cleaner, and FIG. FIG. ■...Central cleaner, 2...Inlet, 3...
- Hose, 4, 5... Power terminal, 6... Electric suction tool, 7°15... Charger, 8, 16... Projection, 9.
lO... Connection terminal. 11.17...Charging circuit, 12.18...Rechargeable electric appliance, 13°19...Rechargeable battery, 14...Transformer.

Claims (1)

[Scope of Claims] 1. A charger for charging a rechargeable battery built into a rechargeable electric appliance, which is installed on an indoor wall, etc., and forms an intake path by inserting a cleaning hose, and also connects the end of the hose. It has a protrusion that is connected to a power terminal that drives an electric suction tool and is inserted into an opening of an outlet of a central cleaner that can be cleaned, and when the protrusion is inserted into the opening of the outlet, A charger for a rechargeable appliance having a connection terminal connected to a power supply terminal to supply power to a charging circuit. 2. A claim in which a transformer is installed in the protruding part that is inserted into the opening of the central cleaner's outlet, which is interposed between the connection terminal and the charging circuit and generates a power supply voltage that is different from the power supply voltage of the electric suction device. A charger for the rechargeable electric appliance according to item 1.