DE3325331A1 - Arrangement for electrically operated, rechargeable small apparatuses - Google Patents

Abstract

For electrically operated rechargeable small apparatuses, especially for small vacuum cleaners, the charging apparatus 8 contains only one transformer 6, preferably a short-circuit-resistant transformer, while the rectifier device 7 is arranged in the housing 1 of the small apparatus, which housing 1 can be separated from the charging apparatus 8. <IMAGE>

Description

Arrangement for electrically operated, rechargeable small devices

The present invention relates to an arrangement for Electrically operated, rechargeable small devices, in particular for small vacuum cleaners, with a current collector through which a DC motor can be supplied with electrical energy.

Electrically operated, rechargeable Kleinge.räte are well known in various embodiments. This includes radios, lamps, small vacuum cleaners, razors and similar devices. Insofar as these devices are operated by accumulators, ie by so-called current collectors, it is necessary to take measures to recharge these current collectors after the current has been drawn or to keep them in a charged state. So-called charging devices are used for this. Since the voltage is in the low-voltage range for reasons of expediency, in particular with regard to the battery voltage, known charging devices preferably contain a transformer as a voltage converter and a rectifier arrangement for rectifying the alternating current transformer. Some of these charging devices are completely housed in the K1 ο i ri ^ device or are enclosed outside of this by their own housing. Hei do Maßrmhmeri have their advantages and disadvantages. I ¹ Mi r the interruption dor Ι, ικίοη i η r ί oh tu ng in the small device speaks that no additional! The device is required. The small device can be connected directly to the power supply network via a plug line to charge its batteries.

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getting closed. Through the unloading of the loading unit, u η κ in a special (, a charger is the electrically operable, like ederaul'l adhare small device in llinhlick soxvohl noticeably relieved of the load on the ileal need as well as on the weight.

The problem with the use of chargers is rather the fact that that by confusing the pluggable charging connections, incorrect states are possible, which can lead to to blockages of the charging process or to short circuits can come.

The object of the present invention is to provide an arrangement for electrically operated, rechargeable small devices, with Help of which the current collector or those arranged in the small device are easily rechargeable.

My arrangement which corresponds to these requirements is according to the invention characterized in that a charger with only one transformer is arranged as a separate structural unit is, and that the rectifier device in with the low volt connections of the charger releasably connectable housing of the Small appliance is arranged.

One equipped according to these features according to the invention The arrangement is characterized in that the small device is removed from the space-consuming and weight-intensive transformer in a known manner is relieved. In this arrangement, however, it is now essential that the rectifier arrangement corresponds to the small appliance and thus the pole connections of the b ^ w. the current transformer clearly is permanently assigned. The assignment of the device connections to the connections of the charger is unproblematic; on a mix-up the connections no longer need to be taken into account. In addition, this arrangement of the rectifier device within the small device this sockets in the area of the connection are short-circuit-proof. A particularly complex measure

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against bridging of the connection poles by electrically conductive, Objects placed on the outside need not be hit.

In the context of the invention it would be possible to use a rectifier device to be used in Graetz circuit. However, the arrangement according to the invention is preferably designed in such a way that that the rectifier device is formed by a rectifier in one of the current paths between the one connector pole and the current collector. This is only only every second half-wave used for the charging process; the long loading times that are normally available however, it is completely sufficient to carry out the charging process.

If a short-circuit-proof safety transformer is also used for the charger, it is also a particularly complex one Measure to secure contact not necessary.

If the rectifier path is homopolar to the switch path, via which the motor circuit can be opened and closed, and iss, the motor-side switching contact of this Switch route made accessible, there is a further advantage of the arrangement according to the invention, namely that by applying voltage to the free contact connection and to the switch connection point of the motor - for test purposes, for example - Can be operated without the current collector being connected to the supply voltage and thus being charged.

Malfunctions in the device., Dio by (lon current transformer their Have a cause or which are conditioned by don Mo (, or thus easy to each other uri l.orseh i dreary wonlon.

An exemplary embodiment constructed according to the features of the invention is described in more detail below with reference to a drawing.

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The figure shows a circuit arrangement for operating a Iiii Γ thermo tors for a K I e i ns vacuum cleaner through a current collector and ο i no Au Γ I adovorr i ch 1.1 in κ for this current collector.

Iti a. Symbolically dash-dotted, illustrated housing 1 of the KI ο i tis tnubsuugers are essential functional components i I c under use I. a (Jl eic: hs trom-1'ΊΊ ektromotor 2, a StromsatnmJor 3 with three /. and a switch 5 that can be actuated via a push button h . As long as the push button h is actuated, the circuit via the current collector 3 and the motor 2 is closed, ie the motor 2 is driven by the current output by the current collector 3.

The energy dissipated in the current collector 3 is restored filled up by connection to an external power supply using a transformer 6, the primary winding of which designed for connection to ο i π existing power supply network, is and ο i nen "(J I e ichr i eh tor 7. The transformer 6 is housed in an ο own power supply housing K, while the rectifier 7 part of the housing 1 of the small Vacuum cleaner housed circuitry is. By a plug connection 9 is the transformer 6 of the power supply unit 8 releasably connected to the circuit arrangement accommodated in the housing 1. Because the transformer 6 changes current supplies to the connector 9 is a contact reversal without any risk of puncture disorder or Possible damage.

Because the rectifier element 7 is arranged on the side of the current collector 3 on which the switching contact ^r > is located, via which the circuit to the electric motor 2 can be closed, there is a possibility of applying current to the electric motor 2 for testing purposes, without the current collector being connected and being charged. For this purpose, the actuating button 4 above the switch 5 is simply pulled off

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so that the switching contact of the switch 5 on the motor side is accessible will. If a DC voltage is now applied to this and to the free contact of the plug connection 9, without the switch 5 is closed, so only the motor circuit closed.

The sufficient state of charge of the current collector 3 is signaled via a light-emitting diode line 10.

Claims (3)

Τ /, Ι ' Sponsorship talks ^ Arrangement for electrically powered, rechargeable small devices, especially for small vacuum cleaners, with a current collector over which a direct current motor with electrical Energy can be supplied, characterized in that a charger with only one Transformer (6) is arranged as a separate structural unit (8) and that the (M eichrichter-device (7) in with the low-voltage connections of the charger releasably connectable housing (1.) of the small device is arranged. 2. Arrangement according to claim 1, characterized in that the G1eichrichter-ELnrichtung (7) by a single rectifier is formed in one of the current paths between the one connector pole (9) and the current collector (3). 3. Arrangement according to one of claims 1 or 2, characterized in that that a short-circuit proof safety transformer (6) is used. Λ. Arrangement according to one of claims 1 to 3, characterized., that the rectifier section (7) has the same polarity as the switch section (5) »via which the motor circuit (2) can be opened and closed, and that the motor-side switching contact of this switch path (5) is made accessible. COPY