DE1817653A1 - Charger for electrical devices - Google Patents

Description

DSETEK JANDER DR.-1NQ. MANFKED BÖNINq

PATENT LAWYERS

1 BER LI N 33 (DAHLEM) HUTTENWEG 15 Telephone 03 11/7613 03 Telegrams: Consideration Berlin

738/13 008

December 30, 1968

Patent application

of the company

SPBKHI EAxJD CORPORATION I29O Avenue of the Americas New York 19, iüY., U.S.A.

II'-

Electrical device charger "

The invention relates to an ijade device for electrical devices, in particular dry razors, with rechargeable power source.

They are portable electrical devices for a wide variety of uses known in the household who have refillable energy supplies. Examples of such devices are electric dry razors

903831/0949

['■, ■ Is hack k unto Berlin We', I 1/4 ϊ 84 Berliner Bank AG, Depositen kasse 1

DIPL..INO- DIETEKJANDER DR.-INO. MANFRED BONINC

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devices with rechargeable batteries, small electric vacuum cleaners and electric brushes. The well-known electric Devices have a charging device either in their housing or in a special charging frame or a similar component and it is possible with them to close an electrical circuit between the batteries and the charger, to recharge the batteries periodically and to provide them with the energy supply that is required to run the motor to drive the device properly via a battery-motor circuit.

In known devices of the type in question, problems arise when the batteries are not sufficiently charged. At the. In the example of a battery-operated shaving device, this means that a shaving operation cannot be completed. Rather, the user has to recharge the shaver and cannot use it during the charging time. The known devices require a comparatively long time to charge the batteries to such an extent that they can deliver the energy required for a shave. The time it takes to fully charge the batteries is of course even longer. As a result of the circumstances described, devices of the type in question cannot be used for a comparatively long time if the batteries are not recharged at regular intervals. It is therefore desirable to develop a charger which allows the batteries to be charged in a short period of time to an extent sufficient to allow the user at least one complete shave before fully recharging the batteries over an extended period of time.

The invention is based on the object of a charging device to develop} the account of the above-mentioned wishes

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BATH

© R.-IIMQ. MAWFflE © PATENT LAWYERS

contributes ο This object is achieved in that the invention Charging device has means for adjusting the size of the electrical power available for charging.

The charging device according to the invention has the advantage that it allows 5 to change the size of the charging energy, and so the Creates the possibility of charging batteries in different lengths of time.

In a preferred embodiment of the invention, the Means for adjusting the size of the charging power formed by resistors and / or capacitors

A particularly advantageous charging device with a rectifier for converting an alternating voltage fed to its inputs is characterized in that it has branch lines in its charging circuit having a first and a second resistor and that these branch lines are parallel to increase the charging power are switchable «. Is it recommended here? when the resistance a branch line that can be switched off via a switch is formed at least in part by a lamp, which makes it possible to recognize when charging with increased charging speed.

The invention is illustrated below with reference to two exemplary embodiments explained in more detail. Show eg

Pig.l a simplified schematic diagram of a with rechargeable Battery operated electric dry shaver with a charging device for generating direct current for recharging the batteries of the shaver;

Pig.2 the schematic representation of a -ueitung with which the Hasier device can be connected to the charging device according to i "ig.l}

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909831/0949

DIPL.-INQ. DIETERJANDER DR..INQ. MANFRED BONINC PATENT LAWYERS

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3? Ig.3 a simplified schematic circuit diagram of the electrical circuits of the base unit and the charger and

Figure 4 is a simplified modified circuit diagram of another Embodiment of the invention.

The invention is explained using a dry shaving device, since it is of particular importance for such a device. As is well known Dry razors, which are provided with rechargeable batteries, are very often used when traveling. Especially when traveling but the owner of the device is often under time pressure, and the non-functionality of his device therefore prepares him regularly a particularly unpleasant surprise. With the creation of a tendon loader, here's how to get easy will see, a particularly serious disadvantage is eliminated. It goes without saying that the invention also offers advantages with other devices of a similar type ·.

In Pig. 1 is generally battery operated with 10 Denotes a shaving device, while 11 represents a charging device for this device.

The construction of the shaver is known. The device has a housing 15 in which a motor M driven by a DC motor Shaving head 14 is housed. A pair of rechargeable Batteries B in the housing 13 are used to power the motor M. With the help of the manually operated switch KS, the circuit between the batteries B and the motor M close. The shaver also loosely fitted in a recess Provided input contact pins ST1, ST2 and ST3.

In the circuit diagram according to Figure 3, MR is the rotor of the drive motor M,

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DIETER JANDER DR-INQ. MANFKEB BONlNQ

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while PMi ^{1 represents} the permanent magnetic ^ field of this motor. The switch KS has two resting contacts KS1 and KS2 and a moving contact KS3. The contact KS3 can be connected by hand from a normal middle open position either with one or the other of the two contacts KS1 or KS2. One pole of the rotor MR is connected to the negative terminal of the rechargeable batteries B connected in series. The other terminal of the motor rotor MR is connected to the movable contact KS3 of the switch KS. The positive pole of the batteries B is connected to the resting contact KS2 of the switch KS. The resting contact KSl is connected to the input terminal STl.

As can be seen from FIG. 1, the charging device 11 has a housing 15 in which a full-wave rectifier RS, a lamp L and a manually operated switch KSO are arranged. A supply line 16 runs into the housing 15. It has a plug which is provided with contact pins Ti and 12, which can be plugged into a common household alternating current socket. Output socket connections CTi, 0T2 and CT3 are also arranged on the housing 15 and can be connected to the input connections ST1, ST2 and ST3. The ^ usgangsanschlüase GTi, GT2 and OT3 and the input terminals {STi, ST2 and ST3 are constructed asymmetrically to ensure that the shaving wirdc always properly inserted into the loader

The electrical parts of the charging device 11 are connected to one another as shown in FIG. The transformer TR of the charging device 11 has a primary winding TRP or a secondary winding TRS _0. The primary winding TRP is connected to the input connection T2 and via a fuse i ¹ to the input connection T1. The secondary winding TRS of the transformer Tft is equipped with a full-wave rectifier ES and a middle

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DIPL.-INO- DiETERJANDER DR.-INQ. MANFRED BONINQ PATENT LAWYERS

tap connected to the output terminal CT3 via conductor 4-0. The full wave rectifier ES is also available via conductors 20 and with the output connections GT1 and CT2 in connection. Will the transformer TR energy supplied, 30 he supplies alternating current a certain size to the input of the rectifier RE. This converts the alternating current into pulsating direct current. The rectifier output can be charged via conductors 30 and 4O for the purpose of charging the Batteries B connected to output terminals CT2 and CI3 will. But it can also be accessed via ladder 20 and 4-0 with the Connect output terminals GTi and OT3 so as to make one of the Batteries B allow independent drive of the rotor MR of the motor.

As can be seen from what has already been said at the beginning, an essential feature of the invention is to provide means which allow the magnitude of the direct current that is available at the output connections CT2 and GT3 for charging the batteries B to be varied. Appropriate for this purpose are in the charging device control means, to which a of H _a nd operable switch KSC (lig.l) belongs, having two stationary contacts and KSGi KSC2 (Pig.3) and a movable contact arm. The first means to increase the line resistance in the form of a voltage-lowering resistor R1 are located between the contact KSGi and the output terminal CT2. Second means influencing the line resistance are formed by a lamp L, which is in series with the contact KSG2 and the output terminal CT2 and parallel to the resistor Rl. A resistor R2 also bridges the lamp L,

In Fig.2 a flexible two-wire cable PC is shown. This cable has at one end a plug device PF with connecting ^{sleeves Pi 1} I and PP2, which with the input terminals ST1 and

909831/0949

DlVLMMQ. IiIETEKJANDER DR.-8NQ. MAhJFREO BONlNQ

PATENT LAWYERS ". _Q

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ST3 of the shaving device 10 can be connected. In addition, the cable is provided with a plug-in device PM, which connector pins PMl and 3? M2 besitstj, with the help of which it is connected to the initial socket GTl and GT3 of the charger can be connected. The pecking devices P2P and PM on the opposite one Connections of the cable are connected by two conductors in the cable PC

aan once at ₉ that the shaver 10 is to be powered by its batteries B after it has been removed from the charger, the switch KS (Pig.3) is moved into a position in which the movable © contact KS3 with the resting Contact KS2 'is pre-cut »In this way, a connection is established between the batteries B via the rotor MR of the motor M and the shaving head 14 is driven.

Ils Next was aagonomman ₉ that the Basi © rgsrät 10 angefeiabea independent of the batteries B ο intended for this purpose on to the cable PG (Fig.2) si7isela © n the shaving apparatus 10 and the loading device 11 '. As a result, ÖliQ iiaselaliisss PPI and PI2 äQ2 Steokvo2? Rioh1mng Pl with the Kontaktstift®]! ^ l and PM2 of the plug-in device PM and via this © with the output connections GTl and GE3 of the lad® device vQEtaaaQn. Is the supply line 16 of the charging device 11 with © in © 2? Haugihaltssteekdose connected, via which, for example, alternating current from 110 ToIt is conducted to the Singangastifte T1 and T2. The alternating voltage comes through the Iran formats? TR sum input of the ü-leichriehters EE, whereby the transformer TE sugeführea the height of the asm rectifier BB. Stromes bs Grenzto Ber G-laiehrichter ES converts the alternating voltage into pulsating & lexehBpannraig of a relatively low voltage. This equal voltage reaches Woqt conductors 20 and 4® from the output terminals OT1 and ÖT3 (5 ^! _{Ig o} 3) to the charging device Ue

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DIPL.-INq. DIETERJANDER DR.-INQ. MANFRED BONING PATENT LAWYERS

If the manually operated switch KS of the shaver is closed in such a way that the contact KS3 and the contact KSl come into connection with one another, the rotor MR of the motor is at a standstill directly via the conductors 20 and 4O, the cable PC and the Input connections ST1 and ST3 of the shaver with the output of the rectifier RE in connection. The rotor MR of the device is thereby powered independently of the batteries B.

Next, assume that the batteries B are to be charged by an external AC power source. To do this too reach, the cable PC from the shaver 10 and the charger 11 released and the switch KS dea shaver 10 transferred to its normally open position. Then you bet the shaver 10 in the loading device 11. Here, the Contact pins STi, ST2 and ST3 in the output connections CT1, CT2 and CT3 introduced. If the charging device 11 is connected to an alternating current source, as previously described, then occurs from the output of the rectifier RE through the resistor Rl and over the conductors 3 °, 40 voltage to the output connections GT2 and OT3, wherein the resistor Rl limits the size of the output direct current power to a first predetermined value. It may it should be noted that no current flows through the conductor 20 when the switch KS of the shaver lO is in his Open division is located. Under the conditions described is the rectifier RE via the conductors 3O, 4O and the connections CT2 - SI2 as well as CT3 - ST3 with the batteries B in connection. The resistor Rl has a fixed ohmic value that the charging speed of the batteries B to a predetermined level limited, which is chosen so that the batteries B can remain in the charger for an unlimited period of time.

Assume next that the shaver 10 of the

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909831/0949 ßAD original

D! PL .. | NQ. DIETERJANDER DR..INO.MANFRED BONINCJ PATENT LAWYERS

Batteries B are to be powered and it is determined that the batteries are too weak to power the motor M and that therefore a charge of the batteries sufficient to allow at least one shave to perform the desired rapid charge is desired the shaving device is in turn inserted into the charging device 11 and the switch KSG of the charging device is moved into a position in which it connects the contacts KSCl and KSC2 (FIG. 3). When the switch KSC is closed in this way, the lamp L and the resistor R2 are parallel to the voltage-reducing resistor Rl ₀ "The consequence of the parallel connection of the lamp L, the resistor R2 and the resistor Rl is that the total resistance of the branch lines of the line 3 ^ is reduced. The lamp L and the resistor R2 have certain ohmic values in order to increase the current conducted to the output terminals CT2 and CT3 in the parallel connection with the resistor R1. In this way, the charging speed of the batteries B is increased to a predetermined value and the batteries are charged more quickly than in the first described charging method. the batteries B obtained in this way in a very short time a sufficiently large charge .zumindest to the motor M of the shaving apparatus to be driven as long as that a shaving carried λ leads are can when the shaving implement 10 is separated from the charging device 11. During the accelerates When charging is complete, the L lamp lights up and indicates to the user that the device is being charged quickly

A modified embodiment of the invention is shown in FIG. In this embodiment, the rotor MR of a motor and the permanent magnet are located in the electric circuit of the shaver PMF as well as the rechargeable batteries B and the • Input connections IT1 and ΙΪ2. A switch SV / is via a

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DIPL..INQ. DIETERJANDER DR..INQ. MANFRED BONINQ PATENT LAWYERS

movable contact arm SWl with the positive pole of the batteries B and via a resting contact SW2 with a terminal of the Rotor connected to MR. The other terminal of the rotor MR is connected to the negative terminal of the batteries B.

To the L _a dekreis include input terminals Ti and T2, a fuse 3? and a full-wave bridge rectifier VE for converting the AC supply voltage into DC voltage for the ^ output connections OT1 and 0Ϊ2. A capacitor Ci is arranged between the input of the rectifier VE and the input connection Ti. A resistor R3 bridges the capacitor Ci. The resistor R3 and the capacitor Ci have a certain size in order to limit the AC power supplied to the rectifier VE from an external voltage source to a firmly defined level.

The size of the alternating current power supplied to the rectifier VE and thus also the size of the direct current power reaching the output connections OT1 and 0T2 can be changed by means specifically provided for this purpose. For this purpose, an L · switch CW is attached between the input connection T1 and the rectifier VE, which switch has a movable contact CW1 and a stationary contact CW2. A second capacitor C2 can be connected in parallel to the first capacitor C1 via the contact CW2 of the switch.

To charge the batteries B of the second charger via the To charge connections T1 and T2, the input connections ITi and IT2 of the shaving device are connected to the output connections OTi and OT2 of the charger connected. This way becomes a Charging circuit made from the input terminals Tl and T2 via the capacitor Ci and the rectifier VE a rectifier

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DIPL..SNO. © BETER JANÖER DR. ·! NQ. MANFRE © BONlNQ PATENT LAWYERS

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power ^{output% r} orb. © stiimat © r size gum. charging the batteries emits®

If the speed of the batteries B is to be increased, the switch GW is actuated to close the contact © GW1 and OW2 su. As a result, the capacitors 02 and O1 as well as the resistor R5 are connected in parallel. The Polge iat that ^ S äer Gesamtwidarstaadj, which is shared ₉ to the sum rectifier VS directed alternating current is reduced.

Capacitor Ci nnä d ©? Resistor R3 have a certain ⁹ SChQB. Value ο as a result of parallel connection with dom

Koad © aeator 02 b @ i closed switch GV / is the on Siagaag äQe 6-laißh3? Leh © Es Vl occurring © power increased and the © ÄuflacliaQit ä @ T B.att © 2? I © a B guf a predetermined amount reduced ο If the basiorgosät is to be taken into account, the © Siagaagsansiohlüss © 3ISl and Χ "Ϊ2 by deji lusgangsaasohliissea & .θτ Isao.evoi-sahmig 021 mid 022 gQseparated. Sana wisd the switch SY / operated ₉ iaa daa Koatsikt SW2 au iselali © ß © n mad eiaan SteomlcrQis awischsa doa Batt ^ rion B des Hot or S.EE iss Motors h © x

The -irosaiisgegaagQn © Β © @ cReibung aaoht clearly that the invention according to the © Ladevossdehtung 2ahl2? © ieh8 offers advantages · advantage bsstsht in it _? that di® means to "change the dem

aag dar iai © vos? £ i © h * feiiag sugsfühEten IsQistuag are extremely coapact and economical- _o Bie ^ nwsaduag an iampe L as resistance, which can be switched to resistance H ₉ has dsn gusätaliohQn advantage that aann, if there is aiifgelaöon with higher wind speed, there is an optical analogy to the increased wind speed

t MBsSP

909831/0949

Claims (17)

DlPL-INQ. DIETER JANDER DR.-INQ. MANFRED BDNINbS 17653 PATENTANWÄLTE Patent application for SPBEEY EAKD COEPOEATION I29O Avenue of the Americas New York 19, N.Y. ,UNITED STATES. 1 BERLIN 33 (DAHLEM) HOTTENWEG 15 Telephone 03 11/76 13 03 Telegram ·: Contlderatlon Berlin 738/13 008 DB December 30, 1968 Patent claims 1) Charging device for electrical devices, especially dry shavers, with a rechargeable power source, characterized in that it has means for adjusting the size of the Charge has available electrical power. 2) Loading device according to claim 1, characterized net that the means for adjusting the size of the charging power formed by resistors and / or capacitors. 3) Charging device according to claim 2 with a rectifier for converting an alternating voltage supplied to its inputs, marked by the fact that they are in their load circuit Branch lines with different resistances and these branch lines can be connected in parallel to increase the charging power are. 4) Charging device according to claim 3, characterized in that a first branch line is constantly connected to the rectifier (EE) and an output terminal (CT2) is connected. - 2 - 9 0 9 8 31/0949 Postal check account Berlin West 1743 84 Berliner Bank AG., Deposit kasse 1 DIPL..INQ. DIETER JANDER DR.-INQ / MANFRED BDNINCJ PATENT LAWYERS lo I / 000 5) loading device according to claim 4 »characterized, that a second branch line via a switch (KSG) to the rectifier (EB) and the output connection (CT2) connectable 6) loading device according to claim 5, characterized in, that the resistance in the branch line which can be switched off is formed at least in part by a lamp (L). 7) Loading device according to claim 3> characterized in that that a first branch line is constantly connected to an input terminal (Tl) and the rectifier (VE). 8) Loading device according to claim 7, characterized in e t that a second branch line can be connected via a switch (GW) to the rectifier ("VE) and the input connector. 9) Loading device according to claim 8, characterized in that that in; each branch line at least one capacitor (Cl, O2) is arranged. 10) Loading device according to claim 5, characterized in that the switch has a movable contact part and two static contacts (KSCl, KSC2). 11) Charging device according to one of claims 4 to 1O _S, characterized in that the resistance in the branch line which cannot be switched off determines the size of the normal charging current « 12) Loading device according to claim 5 or 8, characterized in that g e k e η η - - 3 - 9 0 9 8 3 1 / O 9 4 9 _βΛθ DIPL..INQ. DIETER JANDER DR.-INQ. MANFRED BONINQ, PATENT LAWYERS 1 Q 1 * 7 C Γ Ο Io I / bod 1H indicates that the switch (KSC, OW) can be operated by hand and is normally in the open position. 13) charging device according to claim 9 »characterized in that parallel to the branch line which can be switched off arranged capacitor (Cl) another resistor (& 3) is arranged » 14) Loading device according to claim 6, characterized in that parallel to the disconnectable Branch line arranged lamp (L) another resistor (R2) is arranged 15) Loading device according to one of claims 1 to 14 »characterized in that it has connecting sleeves (GT1, CT2, CT3) for a rechargeable battery (B) and a motor (M) that can be driven by these batteries Device has 16) Charging device according to one of claims 3 to 15 »characterized in that aie three output connections (GTi, CT2, ÖT3), of which at the Charger connected device two (GT2, CT3) with two input connections (ST2, ST3) of the electrical device which are connected to the two poles of the chargeable Battery (B) are connected »and of which two others Exit connections (CT1, CT3) with other Singangsanaohlttseen (STl, ST3) can be connected in order to drive the motor (M) directly with the current supplied by the leiehriciiter. 17) Loading device according to Inepruah 16, thereby ge k β η η » ~ 4 _ 909831/0949 DIFL.4NC DIETERJANDER DR.-INQ. MANFRED BONINQ PATENT LAWYERS 'is ze i c h η et that a two-core auxiliary cable (PC) is used to connect the output terminals (CTL, CI3) to the input terminals (STl, ST3). OHIGiNAL INSPECTED 909831/0949