DE20303488U1 - Power supply connection box for household electrically operated devices has removable suppressor and rectifier units - Google Patents

Abstract

A connection box for electrical devices in households (white goods) has a housing (3) in a device wall recess with a spring contact holding a connection cable (8) and connected to the device side through the spring contacts and partly through a suppressor and/or rectifier unit which is removably connected to the housing module.

Description

Mains connection socket for electrically operated devices

The present invention relates to a mains connection box for electrically operated devices, in particular household appliances from the white goods sector, with a housing which can be arranged in a recess in the device wall and which has input contacts which can be connected to a mains connection cable and output contacts which can be connected to counter contacts on the device and which can be at least partially supplied with electrical energy via the input contacts and at least partially via an interference suppression and/or rectification device.

Mains connection sockets for electrically operated devices are known in the prior art in numerous designs and are used primarily for household appliances from the white goods sector, for example washing machines, tumble dryers, dishwashers, electric stoves and similar household appliances, for connecting them to a power supply network.

In order to avoid malfunctions and/or damage to devices that can be connected to a power supply network via a power socket caused by interference in the electrical power supply, for example overvoltages or overcurrents, interference suppression devices, for example so-called mains filters, are known which are connected in the lines of a power cable to be suppressed or on the side of the power socket between the input and output contacts of a power socket to be suppressed. Furthermore,

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Rectifying devices are known which are connected in the lines of a mains connection cable or on the side of the mains connection box between the input and output contacts of a mains connection box in order to be able to connect devices which can be operated with direct current to a power supply network which usually supplies alternating current.

As a rule, interference suppression and/or rectification devices must be installed manually in the existing power sockets when the power sockets are assembled, which is extremely time-consuming, labor-intensive and costly. Furthermore, the external dimensions of the housings of the existing power sockets, in particular their height, are disadvantageously larger when interference suppression and/or rectification devices are used. Furthermore, if the interference suppression and/or rectification devices are defective, the existing power sockets must be replaced as a whole, since the interference suppression and/or rectification devices cannot usually be exchanged or replaced separately.

Furthermore, in the case of the previously known mains connection boxes, the use of interference suppression and/or rectification devices means that it is not possible to assemble the mains connection boxes with a mains connection cable in accordance with the state of the art according to DE 202 04 069 LM ₁ , which discloses a mains connection box in which the pre-assembly of the mains connection box with a mains connection cable is simplified by the use of input contacts of the mains connection box designed as insulation displacement contacts in that a connection between the input contacts of the mains connection box and the lines of the mains connection cable can be made semi- or fully automatically by simply clamping the lines of the mains connection cable into the input contacts of the mains connection box designed as insulation displacement contacts, and this is not possible with reasonable effort.

In view of this state of the art, the invention is based on the object of providing a mains connection box of the type mentioned at the outset, which can be manufactured in a simple manner, inexpensively, in particular semi- or fully automatically, while avoiding the disadvantages described.

To technically solve this problem, the present invention proposes a power connection box of the type mentioned at the outset, in which the interference suppression and/or rectification device is a module which can be detachably connected to the housing and which at least partially forms the input contacts and the output contacts.

The inventive design of the interference suppression and/or rectification device as a module that can be detachably connected to the housing of the power connection box and that at least partially forms the input and output contacts of the power connection box allows for simple and cost-effective production of pre-assembled power connection boxes. In addition, if the interference suppression and/or rectification device module is defective, it can be easily replaced or exchanged. Since the input and output contacts of the power connection box are at least partially formed by the interference suppression and/or rectification device module, the assembly of input and output contacts on the power connection box is at least partially unnecessary, thereby further simplifying the production of power connection boxes according to the invention.

The module can advantageously be connected to the housing in a plug-in manner. In a preferred embodiment of the invention, the module can be locked to the housing, for which purpose in a first specific embodiment of the invention the module has locking and/or guide elements and the housing has locking and/or guide element receptacles that are correspondingly adapted to the locking and/or guide elements, or in a second specific embodiment of the invention the module has locking and/or guide element receptacles and the housing has locking and/or guide element receptacles that are correspondingly adapted to the locking and/or guide element receptacles. In a preferred embodiment of the invention, the input contacts formed on the side of the module are guide elements that are guided in guide slots formed on the side of the housing as guide element receptacles.

Advantageously, the module can be connected to the housing on the device side, which allows the height of the power connection socket to be minimized, particularly outside the device using the power connection socket.

In a further embodiment of the invention, the input contacts can be connected to the power cable by means of a plug that can be detachably attached to the housing, the plug advantageously being pluggable and/or clampable in the housing. In a preferred embodiment of the invention, a plug receptacle is formed on the side of the housing for pluggable and/or clampable attachment of the plug. Advantageously, the lines of the power cable with the plug can be used as a semi- or fully-automatic pre-assembled component, so that the pre-assembly of power connection boxes according to the invention with a power connection cable can be further simplified. Power connection cables pre-assembled with a plug can be stored in the same way as the interference suppression and/or rectification device modules, for example as part of automated production in a bar magazine or the like, sorted for further automated assembly of power connection boxes according to the invention. The power cable and the interference suppression and/or rectification device modules, which are pre-assembled with a plug, can then be installed extremely easily and mechanically as part of the further assembly of the power connection boxes according to the invention, for example by plugging them onto or into the locking and/or guide elements or locking and/or guide element receptacles provided on the side of the housing. In addition, the power cable and the interference suppression and/or rectification device module can be exchanged or replaced in the simplest way in the event of damage or servicing.

Advantageously, the housing is made of an electrically insulating material, preferably plastic.

Further details, features and advantages of the invention are explained in more detail below with reference to the embodiment shown in the figures.

Fig. 1 shows a schematic perspective view of a power connection box according to the invention arranged in a device wall recess of a device wall with a closed housing;

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Fig. 2 shows a schematic perspective view of the mains connection box according to Fig. 1 from the device side;

Fig. 3 shows a schematic perspective exploded view of the power connection box according to the invention;

Fig. 4 shows a schematic perspective exploded view of the power connection box according to Fig. 3 from the device side;

Fig. 5 shows a schematic perspective exploded view of the power connection box according to Fig. 3 with connected interference suppression and/or rectification module and

Fig. 6 shows a schematic perspective view of the power connection box according to Fig. 3 and Fig. 5 with the power cable plug connected.

The power socket 1 shown in Figures 1 to 6 has a housing 2 with a cover 3, which is made of an electrically insulating material, in this case plastic. The power socket 1 is arranged in a device wall recess 7 of a device wall 6 of a household appliance. For this purpose, the plastic housing 2 of the power socket 1 has locking lugs 10, which, when the power socket 1 is mounted, engage or cut behind the device wall 6 of the household appliance through the device wall recess 7 and thus fasten the housing 2 of the power socket 1 to the device wall 6 of the household appliance, as can be seen in particular from Figure 2.

The cover 3 of the power connection box 1 is pivotably attached to the housing 2. For this purpose, the cover 3 has bearing pins which correspond to bearing receptacles 12 on the side of the housing 2. As can be seen from Fig. 1, the cover 3 has receptacles 14 opposite the pivot axis formed by the bearing pins of the cover 3 and the bearing receptacles 12 of the housing 2 of the power connection box 1, which correspond to locking lugs 13 formed on the side of the housing 2 and serve to close the housing 2 by means of the cover 3. Between the receptacles 14 of the

The cover 3 has a recess for the power cable 8 to pass through. A corresponding recess is provided on the side of the housing 2 between the locking lugs 13 for locking the cover 3, as can be seen in Fig. 3. Adjacent to the recess for the power cable 8 to pass through, the housing 2 has a strain relief 17 for the power cable 8.

The power cable 8 has several lines 9, which are or can be connected to spring contacts 4 and 4', which in this case are designed as insulation displacement contacts, via a plug 18 that can be plugged onto the spring contacts 4 and 4'. The housing 2 for the plug 18 has a chamber-like housing 16, which in this case extends essentially perpendicular to the direction of extension of the power cable 8 and in which the plug 18 with the lines 9 of the power cable 8 connected to it can be plugged or clamped, for example in the context of automated or partially automated production.

The spring contacts 4' of the power connection box 1 are arranged in the chamber housing 16 of the housing 2 and are connected to corresponding output contacts 5' provided on the device side of the housing 2 and arranged in a chamber housing 15 protruding from the housing 2.

The spring contacts 4 are formed on the side of the interference suppression and/or rectification device module identified in Figures 3 to 6 with the reference number 20, which can be connected to the housing 2 on the device-side of the housing 2 of the power connection box 1 via a detachable plug/snap connection, for example as part of an automated or partially automated production. The housing 2 has guide slots 25 in the chamber housing 16, through which the spring contacts 4 formed on the side of the interference suppression and/or rectification device module 20 are guided or can be guided (see Fig. 5 and Fig. 3). The module 20 has a housing 23 and a housing cover 24, which are connected to one another in a plug-in manner. The spring contacts 4 and the output contacts 5 are mounted in the housing 23 of the module 20, whereby the output contacts 5 are arranged on the device side of the housing 23 of the module in chamber housings 21 and 22 respectively and the spring contacts 4

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protrude from the housing 23 on the side of the housing 23 opposite the output contacts 5 (see Fig. 3 and Fig. 4).

The chamber housings 21 and 22 on the side of the module 20 and the chamber housings 15 and 16 on the side of the housing 2 of the power connection box 1 serve in this case not only to protect the input and output contacts 4, 5 and 4', 5', but also to guide the mating contacts of the plug (not shown here). In addition, the chamber housings 21 and 22 and 15 and 16 guide and/or clamp the module 20 to the housing 2 and the plug 18.

As can be seen from Fig. 1, the mains connection box 1 has a grounding lug 19 as a further output contact, which protrudes laterally from the housing 2 of the mains connection box 1 and rests on the device wall 6 of the household appliance or can be fastened to it by means of screws.

The housing 2, the module 20 and the housing cover 3 are stored as loose goods. The plug 18 and the power cable 8 connected to it are stored as separately pre-assembled components of the power connection box 1, each sorted in a bar magazine and are successively assembled for pre-assembly by detachably plugging the module 20 and the plug 18 connected to the power cable 8 into the housing 2 of the power connection box and, after inserting the strain relief 17, finally connecting the cover 3 of the housing 2 to it by clamping the bearing mounts 12 onto the bearing pins, as shown in Figures 5 and 6.

The embodiment of the invention shown in the figures serves merely to explain the invention and is not limitative of it.

Reference symbols list

1 power socket

2 Housing (Power socket 1)

3 Housing cover (power connection box 1) 4.4' spring contact

5, 5' output contact

6 Equipment wall

7 Device wall recess

8 Power cable

9 Cable (power cable 8)

10 Latching lug power connection socket

12 Bearing holder

13 Lid locking lug

14 Recording

15 chamber housing (output contact 5')

16 chamber housing (connector 18)

17 Strain relief (power cable 8)

18 plugs (power cable 8)

19 Earth connection lug

20 Module (interference suppression and/or rectification device)

21 Chamber housing (output contact 5)

22 Chamber housing (output contact 5)

23 Housing (Module 20)

24 Housing cover (module 20)

25 Guide slot (spring contact 4)

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Claims (10)

1. Mains connection box ( 1 ) for electrically operated devices, in particular household appliances from the white goods sector, with a housing ( 2 , 3 ) which can be arranged in a device wall recess ( 7 ), which has spring contacts ( 4 , 4 ') which can be connected to a mains connection cable ( 8 ) and output contacts ( 5 , 5 ') which can be connected to mating contacts on the device and which can be at least partially supplied with electrical energy via the spring contacts ( 4 , 4 ') and at least partially via an interference suppression and/or rectification device, characterized in that the interference suppression and/or rectification device is a module ( 20 ) which can be detachably connected to the housing ( 2 , 3 ) and which at least partially forms the spring contacts ( 4 ) and the output contacts ( 5 ). 2. Mains connection box ( 1 ) according to claim 1, characterized in that the module ( 20 ) can be plugged into the housing ( 2 , 3 ). 3. Mains connection box ( 1 ) according to claim 1 or claim 2, characterized in that the module ( 20 ) can be locked to the housing ( 2 , 3 ). 4. Mains connection box ( 1 ) according to one of claims 1 to 3, characterized in that the module ( 20 ) has locking and/or guide elements and the housing ( 2 , 3 ) has locking and/or guide element receptacles correspondingly adapted to the locking and/or guide elements or the module ( 20 ) has locking and/or guide element receptacles and the housing ( 2 , 3 ) has locking and/or guide elements correspondingly adapted to the locking and/or guide element receptacles. 5. Mains connection box ( 1 ) according to claim 4, characterized in that the spring contacts ( 4 ) formed on the side of the module ( 20 ) are guide elements which are guided in guide slots ( 25 ) formed on the side of the housing ( 2 , 3 ). 6. Mains connection box ( 1 ) according to one of claims 1 to 5, characterized in that the module ( 20 ) can be connected to the housing ( 2 ) on the device side. 7. Mains connection box ( 1 ) according to one of claims 1 to 6, characterized in that the spring contacts ( 4 , 4 ') can be connected to the mains connection cable ( 8 ) by means of a plug ( 18 ) which can be detachably fastened in the housing ( 2 , 3 ). 8. Mains connection box ( 1 ) according to claim 7, characterized in that the plug ( 18 ) can be plugged and/or clamped into the housing ( 2 ). 9. Mains connection box ( 1 ) according to claim 8, characterized in that, on the side of the housing ( 2 ), a plug receptacle ( 16 ) is formed for plugging and/or clamping fastening of the plug ( 18 ). 10. Mains connection box ( 1 ) according to one of claims 1 to 9, characterized in that the housing ( 2 , 3 ) is made of an electrically insulating material, preferably of plastic.