DE1515504A1 - Electrical work device with several electrical components - Google Patents

Description

Dipi.-lng.G.Schliebs

Patent attorney Darmstadt Büchnerstraße 14 Telephone 7 0928

Postal checking account: Frankfurt a. M. 111157 Bank details: Deutsche Bank AG., Darmstadt Telegrams: inventron

To the

German Patent Office

b) Munich 2

Museum Island 1

38/65

File number New patent application My reference _{number S b / Ann Day 20.9.I965}

Applicant Braun Aktiengesellschaft, Prankfurt (Main)

Notification of

Electrical work device with several electrical components

The invention relates to wiring in electrical equipment having multiple electrical components, and in particular in electrical equipment with a motor drive, such as those used in the home or workshop.

In electronics has the technology of integrated circuits led to such a reduction in the dimensions of entire assemblies that the wiring of such assemblies with each other or with conventional singular circuit elements (components) forced to new considerations because the space required by conventional cable harnesses is as large as that of all the assemblies of one Device. Primarily for the purposes of communications and computing electronics flexible conductor foil implemented in printed circuit technology has been developed, i.e. on thin carriers of sheet thickness applied conductor multiples, to which the assemblies and circuit elements in the usual

909830/0496

Letter dated September 20, 1965 sheet 2 DipL-lng. Q. Sehltebs

to the German Patent Office, Munich 38/65. Patent attorney

Way to be soldered on or plugged in. De ** expression "printed Circuit "is intended here for all manufacturing processes apply (radio mentor I965 * page 685)

It has now been found that the new type of wiring can also be used in conventional high-voltage electrical engineering, in which not miniaturization, but rationalization and lowering costs in the production of large quantities are the problem. Electrical tools usually have a drive motor, a heating element, etc., a single or multi-pole one on electrical components Two-position or multi-position switch, a voltage selection switch, connections for the power supply (e.g. Plug contacts) and often a lighting or display (incandescent or glow lamp). Other components such as thermostats, Overcurrent protection switches, speed controllers, etc. can be added. The electrical components sit together with mechanical components for power transmission (clutch, gearbox) and work tools in a dedicated distribution loosely or individually attached, sometimes combined to form smaller assemblies, in one housing.

The invention now proposes in such electrical working devices the electrical components by means of a printed on a flexible non-conductive support To connect the circuit to each other in an electrically conductive manner. The application limits are where cross-section and Length of the individual line cause an electrical resistance, which from the point of view of the efficiency and / or the heating of the flexible carrier is no longer permissible.

Jo That is why the invention also provides for soldered connections to avoid the conductor foil with the individual electrical components, because the materials are thermally high during soldering are loaded, and instead to use clamp, rivet or plug connections. Are particularly advantageous

909830/0496

Letter of 2 September 1966 5 sheet 5 Dlpl.-Ing. G. Schllebs

to the German Patent Office, Munich 38/65 patent attorney

Snap-fastener connections, which are preferably attached to larger (heavier) or components permanently installed in the housing will.

The invention enables automated and thus rational production and a substantial saving in labor, because cable harnesses had to be made from individual lines that were cut to length, one at a time stripped, tinned, bent and bundled and were very sensitive until they were installed in the device. In contrast a conductor foil is produced in a machine process on foils that are only punched out in one operation, if necessary cut and punched, also pre-bent. Smaller components of the working device are in a device inserted - and in fact spread out in one plane and in an arrangement that is less different from the later spatial one Assignment of the parts in the device as from the lengths and the subsequent location of the electrical conductor connections between them and is determined by manufacturing aspects - and firmly connected to the conductor foil. The resulting "Assembly" is then placed in the housing - and it receives its final spatial configuration and by means of the connections on the conductor foil with the remaining components already firmly mounted therein by plug-in or Terminal connections electrically interconnected. Conversely, the device can be dismantled just as quickly, which is good for maintenance, Troubleshooting and repair service is of great benefit.

The previously known printed circuits in the form of rigid circuit boards do not have these advantages. she set a layered order of the components and groups

j3o ahead, as they probably do in electronic devices, but not can be prescribed in electrical work equipment, in which the work purpose is dominant, and are mostly thanks to their mechanical strength they are even carriers of components. Spatial compartments can only be used by several

J'5 panels will be realized through each other again Cable spaces need to be connected.

9 O 9 8 3 O / O U 9 6

Letter dated 20.9 * 1965 sheet 4 DlpL-lng. Q. Schllebs

_{to the} German Patent Office, Munich 58/65 patent attorney

In the following the invention is based on an application example electric dry shaver explained.

Show in the drawing

1 shows a schematic representation of the individual parts of a dry shaving apparatus;

Fig. 2 shows the conductor foil for the electrical wiring and

3 shows a perspective view of the opened housing.

The individual parts of an electric dry shaver are the oscillating armature motor with the two coils 1 and 2 a laminated iron core J5 and the double-armed drive lever 5 * mounted on a bolt 4 on one side the oscillating armature 6 and, on the other hand, the coupling with the one belonging to the cutting system of the apparatus Cutter head 7 carries. The plug contact 9 for the power line, the switch Io and the voltage selector are distributed in the housing 8 11 for switching from Ho to 220 volts.

The wiring of the electrical components is shown in FIG. 2. This shows a printed circuit type with linear conductors 12 covered with plastic film IJ reinforced connection points, namely points 14 for the plug of the power line, points I5 for the single-pole Switch Io and points l6 for the two-pole voltage selector 11. The circuit components are attached to the connection points connected with hollow rivets. Four connections are with the hat-shaped nut parts I7 of snaps equipped.

Fig. 3 shows how the assembly from the components 9, Io and 11 and conductor foil 12, I5 according to FIG. 2 in the housing shell δ

909830 / & 49.6.

Letter from September 20, 1965 ^sheets> 5 DlpL-lng. Q. Schilebe

to the German Patent Office, Munich 58/65 patent attorney

is used, in which the oscillating armature motor is already installed. The two coils 1 and 2 of the armature winding are in place of soldering lugs with the father parts 18 of snaps loaded, which in a narrow, under the bandage of the coil inserted molding strip. The conductor foil 12,13 has now assumed a three-dimensional shape (the coil 1 is not yet connected); Fig. 2 shows the development . In order to facilitate the spatial deformation, the conductor foil is, for example, by a deep-reaching Slit 2o cut (Fig. 2).

909830/0496

Claims (2)

Letter from 2o. 9.1965 Sheet 6 mpu ^ Wfti Q. Schlteb * to the German Patent Office, Munich 38/65. Patent attorney 1615504 patent claims 1. Electrical work device with several electrical and mechanical components in one housing, thereby characterized in that the electrical components (1,2; 9, lo, ll) by means of a per se known, printed on a flexible support (Ij5) Circuit (12) (conductor foil) are connected to one another in an electrically conductive manner. 2. Electrical tool according to claim 1, characterized in that the individual electrical components to the conductor foil (12,15) by means of rivets, clamps or plug connections (14,15 * 16) are connected. j5. Electrical working device according to claim 1 or 2, characterized in that larger (Heavier) electrical components, especially those permanently installed in the housing, by means of push-button connections (17,18) are connected. 909830/0496 _B AD OWG ^ W-