DE3136503A1 - DEVICE PLUG - Google Patents

Description

- 3 ^-:: ··. . I · ..: · .. · *: HOEGER, STELLRECHT-efPÄ ^ TN ER .L 3 13650

PATENT LAWYERS

UHLANOSTRASSE 14 c - d 7000 Stuttgart 1

A 44 844 b Applicant: TI Russell Hobbs Limited

k- 168 Grindly Lane, Blythe Bridge

Sep 11, 1981 Stoke on Trent

Staffordshire, ST11 9LN United Kingdom

Description of device plug

The invention relates to a device plug with a housing and with electrical connections in the interior of the housing. A device plug is to be understood as a plug that can be detachably connected to an electrical device in turn via a cable or a flexible supply line with "· ■ is connected to a normal plug that can be plugged into a wall socket or the like, so that the device can be connected to the plug * ker the supply line and the device plug, for example, a mains voltage can be fed.

Such device plugs are usually used for electrical devices such as electric water pots, coffee machines, irons etc. used.

Handling device plugs with wet hands can be dangerous can even be fatal, especially if there are cracks in the housing of the device plug that lead to a Falling or improper use of the same can be attributed. When the device plug is connected to the The device is disconnected without its connection to the wall socket or the power supply being interrupted / in addition, there is a risk of it falling into a wash basin or sink, which is particularly dangerous then is when the grounding of the sink or the wash basin is poor

4 -

A 44 844 b

k - 168 -A-

11. Sept 1981

or if there is no grounding at all.

The invention is based on the object, starting from State of the art and the problems outlined above to specify a device plug in which the user a warning is given when the device plug is connected to the mains or generally to a supply voltage source.

This object is achieved in a device connector of the type described at the outset according to the invention in that the housing has at least one translucent area and that a light source inside the housing is arranged so that it lights up when at least one of the electrical connections is a power supply

ί voltage is applied, and that the lighting of the light source

through the translucent area on the

<■ 'outside of the housing is visible.

The decisive advantage of the device plug according to the invention is that the user by lighting up the LichtquolLo made it clear that the device plug is still connected to the network.

In the device plug according to the invention, the light source is preferably designed as a neon lamp, and it is particularly it is favorable if there is a resistor in series with the lamp or the light source.

Extensive details and advantages of the invention

A 44 844 b

k - 168 - 5 -

Sept 11, 1981

explained in more detail below with reference to drawings and / or are the subject of subclaims. Show it:

Fig. 1 is a plan view of a preferred embodiment. form of a device plug according to the invention with the upper part of the housing removed;

FIG. 2 is a plan view of the device plug according to FIG. 1 with the housing closed and the same

Fig. 3 is an end view of the left end of the device connector according to FIG. 2.

In detail, FIGS. 1 to 3 of the drawing show a device plug with a housing 10 made of a plastic material is poured or injected. The housing 10 has a lower part 11 and a removable upper part 12, which is fastened to the lower part 11 by means of a screw 13. The housing 10 is essentially rectangular in plan view and has connections for a phase conductor, one Neutral conductor and a protective conductor. The connections 14 to are aligned with associated openings 17, 18 and 19 in the one end of the housing 10. The other end of the housing is for receiving a three-wire flexible cable educated. Usually there is a three-connector at the other end of this line (not shown) Plug pins or connections, whereby this plug can be plugged into a wall socket.

The upper part 12 has a transparent or translucent window 21, which is for example through a plastic lens which can be colored yellow or red

* A 44 844 b

■ f *. k - 168 - 6 -

Sept 11, 1981

and is fixed in an opening in the upper part. It exists but also the possibility of producing the entire upper part 12 from transparent or translucent material.

A neon lamp 22 is connected in series with a resistor 23 between the phase conductor and the neutral conductor or between

:. ':, "■' the connections 14 and 15. The resistor 23 is from

: Surrounded by a transparent plastic cover in order to prevent the lamp 22 from producing a short circuit between the two connections 14 and 15. The neon lamp 22 is mounted in the housing 10 in the vicinity of the window 21 _r ^r ■ so that the lamp 22 in the supply of energy to the device

-: the plug lights up, which warns a user that

ⁱ : that the device plug is connected and disconnected from the mains

must be separated before working on it, with the

I. Disconnection from the mains by pulling out the plug on the other End of line 20 from its associated socket

r can be done.

In addition, it becomes clear to the user that if a device fails, despite the neon lamp 22 being lit, the

v line, but the device itself is disturbed.

In a modified embodiment of the device connector described above, the base part and the cover can be welded together, for example by means of an ultrasonic welding 'y method. Still exists

the possibility of injection molding or casting the cover part in one piece.

Claims (7)

HOEGER, STELLRECH-T - & - "FARTNEft: 31365 PATENT LAWYERS> UHLANDSTRASSE 14 c · D 7000 STUTTGART 1 "* A 44 844 b Applicant: TI Russell Hobbs Limited k- 168 Grindly Lane, Blythe Bridge Sep 11, 1981 Stoke on Trent Staffordshire, ST11 9LN United Kingdom Claims Device plug with a housing and with electrical connections inside the housing, characterized in that that the housing (10) has at least one transparent area (21) and that inside of the housing (10) a light source (22) arranged in this way is that it lights up when a supply voltage is applied to at least one of the electrical connections (14) is applied, and that the illumination of the light source (22) through the translucent area (21) through the outside of the housing (10) is visible. 2. Device plug according to claim 1, characterized in that a neon lamp (22) is provided as the light source. 3. Device plug according to claim 1 or 2, characterized in that the light source (22) inside the housing (10) is electrically connected to the phase conductor connection (14) and the neutral conductor connection (15). 4. Device plug according to claim 3, characterized in that a resistor in series with the light source (22) (23) is switched. 5. Device plug nac. Claim 4, characterized in t that the resistor is surrounded by a sheath of electrically iso- "lierendem material. r A 44 844 b T. - k - 168 - 2 - "Sept. 11, 1981 6. Device plug according to one of claims 1 to 5, characterized in that the translucent area as transparent or translucent window (21) is formed, which in an opening of the housing (10) is fixed. 7. Device plug according to one of claims 1 to 6, characterized in that the housing (10) has a base part (11), a releasably connected upper part (12) and in its interior a phase conductor connection (14), a Neutral conductor connection (15) and a ground conductor connection (16) having associated openings (17, 18, 19) are aligned in one end of the housing (10), and that the other end of the housing (10) is designed to receive a three-core flexible supply line (20) ^iSt *