DE9320735U1 - power strip - Google Patents

Description

Patent attorneys Tergau & Pohl, Nuremberg · ti · · feite 1 *..!!«

Description

&bgr; Multiple socket

8 The invention relates to a multiple socket for power plugs, in particular &bgr; a protective contact socket strip, with the features of the preamble of io claim 1.

12 Such multiple sockets are known from DE 36 41 153 A1.

is encapsulated within the housing shells made of insulating material

&kgr; arranged contact elements are designed as contact springs, which

15 contact pins of a plugged-in power plug and thereby electrical

16 tric contact. Other contact elements are protective contact brackets for

17 Contacting of a corresponding protective contact of the mains plug

18. This protective contact is connected to the protective conductor of the three-core power cable in this case. The contact elements are the same

20 voltage potentials are connected in one piece by rail-like conductors

21. Due to the one-piece production of the conductors and the associated

22 contact elements will save costly manufacturing time for other

23 If contact connections made by riveting or soldering are eliminated.

24 However, this time saving is offset by poor material utilization

25 as a result of a significant waste of material. In order to reduce the waste of the one-piece production of the conductors with the associated contact elements

27, DE 36 41 153 A1 defines a specific geometric

28 Arrangement of the contact elements within the housing shells proposed.

29 Multiple sockets of the type mentioned above are, however, provided for individual

30 rush according to market needs with different number and

31 Arrangement form of the plug sockets required. In the case of a one-piece design of the sz contact elements and the associated conductors of the same electrical potential

33 different combinations are configured for each socket type

34 of contact elements with their associated conductors. This requires

35 in turn increased tool and storage costs.

37 In order to eliminate this disadvantage and at the same time avoid complex electrical 33 contact connection techniques between contact connection elements and

October 27, 1994

Patent Attorneys Tergau & Pohl, Nuremberg * &idigr;&idigr; * * Page 2 ·,.;!«

&igr; To avoid using ladders, electrical contact of the separately

2 manufactured contact elements with the conductor during assembly of the con-

3 clock elements from US 4 830 626 basically known. The structural design

4 of the contact element known there and the socket-like insulating

5 housing is, however, completely unsuitable for multiple sockets of the type mentioned above. In addition, the electrical contact technology is inadequate. The 7 insulating sheath of the conductor is namely pushed into the sliding direction by needle-like extensions of the 7 contact element during its assembly.

9, so that only a point-like contact between the needle tips

10 and the surface of the conductor. This type of electrical contact

11 technology also causes a poor mutual fixation of con-

12 tact element and conductor in their final assembled state.

14 In contrast, an improved mutual mechanical fixation and

is electrical contact of contact element and conductor is from BROCKHAUS,

ie "Natural Sciences and Technology", Volume 4, NI-SN, Wiesbaden, 1983, p. 268,

17 ISBN 3-7653-0357-7 and known from EP 0 419 031 A1.

19 According to EP 0 419 031 A1, the contact elements and the conductors are in a

20 Insulating housing is integrated. However, this insulating housing is for voltage

21 power plugs of the type mentioned above are not suitable. Rather

22, various plug units are provided, which are connected by means of a plurality

23 differently dimensioned contact pins in recesses of the insulating

24 housing. A direct contact between the contact pins and the

25 contact elements is not possible. For electrical contacting of a contact

26 clock elements with a contact pin, the latter engages in the space between a

27 bent, rail-like metal strip, whereby the bent side surfaces of the metal strip clamp the contact pin between them. The

29 electrical contact between contact pin and contact element is created,

so that the contact element contacts the metal strip in a form-fitting and electrical

si contacting. The necessary design of the metal strips

32 and contact elements is structurally complex. In addition, the assembly of a

33 of such an insulating housing is very cumbersome. The intermediate

34 Metal strip between contact element and contact pin of a plug unit

35 also causes additional electrical contact resistance, so that the

36 electrical voltage to compensate for the voltage drop at this over-

37 switching resistances are reduced.

27 October 1994

·· ·* »I ·**· «* · · Patent Attorneys Tergau & Pohl, Nuremberg · &iacgr;! * · Page 3 ·,,! &idigr;.&iacgr;.

&igr; The invention is based on the object of improving the internal structure of a multiple

2 socket of the type mentioned above and thereby a co-

3 to enable cost-effective production with simple storage. This

4 is solved by the combination of features of claim 1.

e The invention uses the aforementioned insulation displacement technology.The

7 Contacting Pushing the contact elements onto the conductors avoids

8 agile joining techniques, such as riveting or soldering. Complex bending and

9 Punching operations - especially in the one-piece production of a conductor and

10 of its contact springs - are also eliminated. On the one hand, this reduces the time

11 production costs are significantly reduced, on the other hand this means

12 also a significant saving in materials, since only a small amount of

13 cut occurs. When conductors are mentioned here, they can be designed as protective conductors &eegr; and conductor tracks. The contact elements mentioned can be designed as protective contact brackets, contact springs or flat terminals.

17 A further advantage is that the individual contact elements of the

18 Multiple sockets can be easily installed using automatic assembly machines

19 In addition, a possibly mechanically damaged contact element

20 can be easily replaced. Until now, due to the contacting used,

21 technology in case of damage e.g. of a protective contact bracket the protective conductor with

22 all protective contact brackets can be replaced. Furthermore, the invention offers

23 the advantage that with essentially the same production facilities, completely

24 differently shaped multiple sockets with different numbers of

25 plug sockets and also different numbers of protective contact brackets

26. The latter can be advantageous if both power plugs with

27 should be usable both with and without protective contact.

29 It is advantageous to design the conductor according to claim 2. This creates µ namely a permanent mechanical stability of the conductor.

32 Alternatively, the conductor according to claim 3 may be a fixed in its extended position

33 and thus by the preferably cutting contact at least on tension

34 and bending resistant wire. It goes without saying that the

35 Wire in its extended position provides the required mechanical stability, in particular

36 must have special tensile strength. The design of the conductor as

37 rail or as a wire has the advantage that time-consuming and costly bending

38 and punching operations on the conductors are eliminated. The rail or the wire can

27 October 1994

Patent attorneys Tergau & Pohl, Nuremberg * &iacgr;&idigr;&idigr;; §eit$ 4 *···*··«

) are fixed within the housing without additional processing steps

2 will be.

4 The mechanical stability of the conductor is ensured by a fixation according to claim

5 4 additionally supported. This bearing compensates for the compressive forces acting on the conductor &bgr; during the sliding on of the contact elements.

7 A positive fixation of the conductor cross-section ensures a secure hold

β of the conductor in its insertion position. The positive fixing

β of the conductor can be achieved, for example, by placing the conductor in a corresponding

io is inserted into the appropriately dimensioned conductor slot of the retaining projection.

ti In this way, displacement forces acting on the conductor can be compensated

12 When we talk about retaining projections, these can be

13 retaining pins, terminal fixation and contact spring fixation.

Claim 5 creates sufficient space for a longer delay

ie of the contact terminals and takes into account their longitudinal expansion in sliding

17 order.

19 The positional fixation of the ladder according to claim 6 advantageously avoids

a manufactured components for fixing the conductors within the housing.

22 The one-piece manufacture of the contact terminals according to claim 7 is particularly

23 particularly noteworthy. It ensures a good mechanical hold of the

24 contact elements and avoids electrical contact between

25 terminal lug and contact element negatively influencing transition resistance-2&bgr; resistance.

28 The U-legs of the slot according to claim 8 form, so to speak, the

29 Guide the travel path of the contact element during its sliding onto the conductor or its removal from the conductor. This enables a

This ensures reliable sliding of the contact elements, which is useful for example for

32 automatic production is very important. The U-base limits the travel

33 in the sliding direction. The surface shape of the U-base and the

34 adjacent U-leg is adapted to the conductor in such a way that the electrically

35 contacting frictional engagement is created and is permanently maintained.

37 A design of the slot of a contact terminal according to claim 9

38 facilitates the precise sliding of the contact terminal to its clamping con-

27 October 1S94

Patent attorneys Tergau & Pohl, Nuremberg · J! J *· §eit$ ij *·** ····

takthaltung or insulation displacement contacting also by a production machine.

4 In the previous versions, the multiple

5 socket bare rails or bare wires as conductors. The conductors are in-

6 inside the socket is therefore uninsulated. In the area of the insertion opening for the

7 Power cable in the multiple socket, the individual wires are insulated from each other &bgr; and covered by a common insulation. The common

&bgr; Insulation ends approximately in the area of the clamp attached as strain relief.

10 steering terminal. From there, the individual wires run insulated to the

11 flat terminals. By using insulation displacement technology for contact

12 By means of the arrangement of the contact terminals according to claim 10, it is possible to continue conductors insulated in this way within the multiple socket. It is therefore unnecessary to strip the conductor wires laid in the multiple socket beforehand. It must only be ensured that the common insulation sheath for all conductor wires has been stripped in such a way that the individual conductor wires are laid in a length approximately corresponding to the length of the multiple socket.

is length must be released. For multi-core cables, for example, the

&iacgr;&ogr; individual wires are insulated by default. These insulated cables only need

a and are cut at their contact points by the cutting

21 clamp contacts cut open in such a way that the cutting contact with the

22 insulation sheath comes into contact with the conductor wire, causing the

23 electrical contact with the conductor wire. The advantage here is that the

24 conductors in the socket interior like the strings of a stringed instrument

25 and are therefore mechanically well tensioned. This allows

26 of sliding the contact terminals on the conductors acting displacement

27 forces are adequately compensated. The cross-section of the conductor acts

28 as a kind of mechanical resistance for the contact clamp during

29 its sliding on, so that the insulation displacement technology is particularly

Can be used for 30 days.

32 Since the insulated conductors are only cut at their contact points,

33 do not require any special measures outside the contact points to

34 Avoidance of short circuits between the individual conductors

35 Such insulated conductors are available as mass-produced parts at low cost. They can be purchased in almost unlimited lengths and can be easily connected to other conductors - just like the rails or uninsulated wires mentioned above.

27 October 1S94

Patent Attorneys Tergau & Pohl, Nuremberg ^# Il i "»

&igr; can be obtained. In this way, it is possible to use the insulation displacement technology 2 for contacting the contact terminals with all its advantages.

4 It is known that cable manufacturers supply two- or three-core cables in accordance with

s corresponding pre-assembled connectors, which are used in the installation

6 tion industry as part of an installation device. This

7 connection cables pre-assembled with the plug are due to their

&bgr; large quantities of mass-produced parts and accordingly

9 low cost. The invention takes advantage of this availability by

10 characteristics of claim 11 in a particularly advantageous manner.

11 while conventionally the connecting cables with the individual contact terminals

12 interconnecting conductors are connected, for example, by clamping, the individual wires of the supply lines can, according to the invention, form the conductors running inside the housing of the multiple socket. They only require appropriate fixing there. The otherwise necessary

16 agile clamping elements, such as flat clamps, are no longer required, which

17 parts and cost savings. The inherent insulation of the wires significantly reduces the risk of short circuits between the individual voltage potentials. In addition, due to the insulation displacement contacts, it

20 ation of the contact terminals of the multiple socket is not an obstacle to production

23 Claim 12 ensures that the contact elements remain securely in their

24 Slide-on position. When we talk about fixing projections,

25 These can be designed as terminal fixation, contact spring fixation, retaining bar, fixing pin or fixing bar.

28 Claims 13 and 14 relate to particular embodiments of fixing

29 projections. These designs improve the storage safety of the contact elements in their pushed-on position.

32 It is advantageous to design the fixing projections according to claims 15 and 16.

33. Such fixing projections ensure that the contact

34 elements before closing the housing and compensate for

35 displacement forces acting on the contact elements. The fixing projections enclose the contact elements to a certain extent. Such enclosures

37 protect the contact elements from mechanical damage or

38 unintentional electrical contact with electrically conductive parts.

27 October 1994

Patent attorneys Tergau & Pohl, Nuremberg

&igr; The protective function of the enclosures can be improved by

2 are formed by self-contained surrounding walls.

* These enclosures enable the design of contact springs according to

5 Claim 17. This design ensures a safe stay

β of the contact spring in its push-on position before the housing shells

7 of the multiple socket are stacked on top of each other.

&bgr; It is advantageous to provide a housing shell according to claim 18 with a web strip

10. This bar increases the mechanical stability of the housing

11 shell. In addition, their arrangement within the housing shell creates a

12 electrical contact protection between contact elements or conductors arranged close to each other. Since the holding and fixing projections are also on the

μm housing shell, the mechanical stability of the housing

15 shell is further improved if several holding and/or fixing projections

which are connected to the web strip.

18 According to claim 19, certain fixing projections and retaining projections

ig has a dual function by fixing the position of a conductor and a

20 contact elements. This allows a spatially close arrangement of the

21 conductors and the contact elements. The housing shell can therefore be smaller

22. In addition, the number of the housing shell to be connected

23 forming projections are kept to a minimum, which also facilitates the manufacture of the housing

24 seschale simplified.

26 The subject matter of the invention is illustrated in the figures

27 examples are explained in more detail. They show:

29 Fig. 1 is a vertical section through a one-sidedly connectable,

µm socket strip designed multiple socket according to the

si section l-l in Fig. 2;

32 Fig. 2 is a plan view in the direction of arrow II corresponding to Fig. 1 of the opened

33 net power strip;

34 Fig. 3 an enlarged view of the socket strip corresponding to S ₅ Fig. 1;

see Fig. 4 an enlarged partial view of the power strip corresponding to 37 Fig. 2;

27 October 199*

Patent attorneys Tergau & Pohl, Nuremberg ·*&idigr;&iacgr; · _# *· feiig § '..J !···

&igr; Fig. 5 a side view of a contact spring with molded contact

2 clamp;

3 Fig. 6 a side view of a flat terminal with molded contact terminal;

s Fig. 7 is a plan view in the direction of arrow VII of the flat plate shown in Fig. 6.

6 clamp;

7 Fig. 8 the side view of a protective contact bracket with molded con-

8 clock terminal;

&iacgr;&ogr; The single-sided power strip 1 according to Fig. 1 and Fig. 2

11 multiple socket contains a housing base designed as

12 Housing shell 2 and a cover designed as a housing cover

13 designed housing shell 3. The housing base 2 and the housing cover 3 are designed as essentially rectangular shells according to Fig. 1 and Fig. 2. Other shell shapes, e.g. circular ones, are also conceivable.

17 The protective conductor 4 and the conductor tracks 5,6 are located as elongated

is wires inside the housing shell 2. The protective conductor 4 and the line

19 tracks 5,6 are advantageous embodiments of the claims mentioned

20 conductors. The conductors 4,5,6 are located at certain distances along their length.

21 stretching into the conductor slots 7. The conductor slots 7 are

22 Components of retaining pins 8, of terminal fixings 9 and of contact

23 spring fixings 10. The conductor slots 7 have a U-shape as shown in Fig. 3. The

24 U-base and the adjoining U-leg areas envelop

25 form-fitting the cross-section of the protective conductor 4 or the conductor tracks

26 5,6. The conductor slots 7 run essentially in the sliding direction 11.

27 The slot opening of the conductor slot 7 is in the sliding direction 11 in the direction

28 onto the housing cover 3 in a funnel-like manner.

30 The retaining pin 8 has a square cross-section as shown in Fig. 2. Transverse to

31 of the conductor slot opening running in the longitudinal direction of the conductor is this

32 Conductor slot opening bisecting one in the holding pin 8 in sliding direction

33 recess protruding into the device 11. The contact

34 terminal 12 of the protective contact bracket 13. A contact terminal 12 is

35 is also formed on the contact spring 14 and the flat terminal 15.

The protective contact bracket 13, contact spring 14 and flat terminal 15 are advantageous

37 embodiments of the contact elements mentioned in the claims.

27 October 109*

Patent Attorneys Tergau & Pohl, Nuremberg * I! 1 " ! ^ite &,. · ·.

&igr; The contact terminal 12 is an integral part of each contact element

2 mentes and contains two essentially in the sliding direction 11

3 extending contact arms 16. The contact arms 16 form according to Fig. 5, Fig. 6 and

4 Fig. 8 the legs of a U-shaped, extending in the sliding direction 11

5 kenden slot 17. The slot width is so the cross section of the bare

6 conductors 4,5,6 adapted so that the contact terminal 12 the corresponding conductor

7 electrically contacted by means of a frictional connection. The legs of the

s U-shaped contactor of a contact terminal 12 are at their free ends in

o Sliding direction 11 through a funnel-shaped widened slot opening

10 and 18. This makes it easier to slide the contact elements

11 elements 13,14,15 on the ladder 4,5,6.

is Alternatively, the legs of the U-shaped slot 17 of the contact

i4 terminal 12 can also be designed as cutting edges. The advantage here is that

is separately manufactured bare protective conductor 4 and bare conductor tracks 5,6

ie can be dispensed with and the insulated wires of the power cable are conductors 4,5,6

&eegr; are.

19 The contact elements 13,14,15 are in their sliding position in Fig. 4.

20 iung. The contact spring 14 in Fig. 4 contains two opposing symmetrical

21 metric parts. It is divided in its central area by two circular arcs

22 are marked with their concave sides facing each other.

23 These sub-areas complement each other to form an oval contact area 19, which

24 at least partially electrically contacts a contact pin (not shown here) of a power plug moved in the sliding direction 11. The 2&bgr; contact area 19 is in its extension in the sliding direction 11 (Fig. 5) in

27 towards the housing cover 3. This facilitates the

28 Inserting the contact pin into the contact area 19. While one end

29 of the oval contact area 19 is extended by the contact terminal 12, μ the other lateral extension of the contact area 19 consists of two si spring clips 20. The spring clips 20 are directed outwards towards the contact area 19

32 and each one is connected by a longitudinal extension

33 sliding direction 11 running bracket web 21. The bracket

34 web 21 is shaped as a polygon in the plan view in Fig. 4. The contact spring 14

35 is supported in its pushed-on position by means of the bracket webs 21 against the inner walls of the contact spring fixing 10. The contact spring 14 is

37 a symmetrical part with an axis of symmetry transverse to the longitudinal extension

38 of the ladder 4,5,6.

October 27, 1884

Patent Attorneys Tergau & Pohl, Nuremberg ·**·***! *I I Page HO it

&zgr; The contact spring fixation 10 is formed on the bottom of the housing shell 2 and

3 extends into the interior of the housing. The circumferentially self-contained

α Enclosure walls of the contact spring fixation 10 form a housing which

5 the contact spring 14 is positively enclosed. The contact spring fixation 10 forms

6 thus the enclosure of the contact spring 14. The contact spring fixation 10 contains

7 also the conductor slot 7 (Fig. 3) for inserting the conductor track 6. The

βgr; conductor track 6 receiving contact spring fixings 10 are in the area of

&bgr; contact terminal side surrounding walls through the web strip 22 in one piece

&iacgr;&ogr; connected to each other. The web strip 22 is on the bottom of the housing shell 2

11 and has a larger diameter than the contact spring fixings 10.

12 lower installation height. It runs parallel to the ladders 4,5,6 and is located between

13 see the protective conductor 4 and the conductor track 6. In the area of the flat

14 clamps, the web strip 22 forms part of the clamp fixations 9.

The web strip 22 increases the mechanical stability of the housing shell 2. Its

&eegr; special arrangement within the housing shell 2 also causes a

The improved contact protection between the electrically separated

ig contact elements 13,14,15 and conductors 4,5,6.

zi The terminal fixings 9 are like the contact spring fixings 10 on the floor

sz are formed on the housing shell 2 and protrude into the interior of the housing.

23 The terminal fixings 9 are designed like a housing. The flat terminals

24 men 15 are positively located within this housing-like clamp fixing

25 ments 9. A side wall of the terminal fixation 9 is tangent to the contact 2&bgr; terminal 12 of the flat terminal 15 and contains the conductor in this area.

27 slot 7 for inserting conductors 4,5,6.

2β The U-base of the conductor slot 7 of a retaining projection 8,9,10 is located

µm at a distance above the bottom of the housing shell 2, so that the

si parallel to each other in the retaining projections 8,9,10 inserted conductors 4,5,6 in

32 at a distance above this housing shell base.

34 A plurality of retaining webs 23 are attached to the bottom of the housing shell 2.

35 and fixing pins 24 are formed. The holding webs 23 and the fixing pins 24 run in Fig. 3 essentially in the sliding direction 11. The holding webs 23

37 are in their extension in the longitudinal direction of the strip compared to a base area

38 before 25 of the protective contact bracket 13 widened (Fig. 4) and run parallel to

27 October 1994

Patent Attorneys Tergau & Pohl, Nuremberg *"ll I *· * Sfeite3i _# j · ₍

&igr; the longitudinal extension of the conductors 4,5,6. The retaining webs 23 touch with their

2 The free end facing away from the housing bottom forms the base area 25 of a protective

3 contact brackets 13 and support this in its sliding position.

s The fixing pin 24 has a circular cross-section in the direction of arrow II and

&bgr; engages in the base surface 25 of the protective contact bracket 13 in a form-fitting manner.

7 For this purpose, the base 25 contains a circular tenon opening 26.

&bgr; The fixing pin area penetrating the pin opening 26 has in arrow—

9 direction II a smaller cross-sectional diameter than that between the

10 Base area 25 and the bottom of the housing shell 2 lying area of the

11 Fixing pin 24.

is Since the protective contact bracket 13, with the exception of the molded

µm contact terminal 12 is a symmetrical part, the base area

15 before 25 a second pin opening 26 (Fig. 4). On the connecting line of the

At the centres of the tenon openings 26 there is a circular

&eegr; Screw hole 27. Below the screw hole 27 is between

i8 see the base 25 and the bottom of the housing shell 2 (Fig. 3) a

ig this base molded pin with an internal thread 28.

21 The connector housing 29 is part of the housing shell 2 shown in Fig. 3.

22 covered housing shell 3, i.e. the housing cover. The connector pot 29

23 contains a pot bottom running parallel to the bottom of the housing shell 2.

24 the 30. At the side edges of the pot base 30 there are side walls 36 that are perpendicular to 2s this and run in the sliding direction 11

26. The side walls 36 connect the pot base 30 with the rest of the parallel

27 to the bottom of the housing shell 2 running part of the housing shell 3. It

28 each contain a bracket opening 37 in the pot bottom area to

29 Free ends of the protective contact bracket 13 when mounting inside the plug

30 kertopfes 29. The pot base 30 has in the direction of arrow II

31 see a circular outline. Accordingly, the

32 the pot bottom 30 adjacent side walls 36 to form a hollow cylinder.

33 the side walls of the plug housing 29 are two guide cheeks 38 (Fig. 1)

34. In the direction of arrow II, the guide cheeks 38 are formed as projections of the

35 Side walls 36 are formed in the direction of the plug socket center. The guide cheeks 38 have a substantially rectangular outline in Fig. 1. 37 Their long sides are arranged parallel to the sliding direction 11. The guide cheeks 38 are each directly connected to the

27 October 18S4

Patent Attorneys Tergau & Pohl, Nuremberg · j; ; *! I Page32ii _# ;

&igr; pot bottom 30. The longitudinal extension of the guide cheeks 38

2 long of the sliding direction 11 is slightly smaller than that of the side walls 36

3 of the connector housing 29. The guide cheeks 38 are spaced apart between the

4 facing each other long sides. This creates between

5 the two guide cheeks 38 a rail-like travel path 39 along the

6 Slide-on direction 11 for a guide lug formed on the power plug.

7 The two guide cheeks 38 together form a guide cheek pair.

8 The guide cheek pair 38 is angled by approximately 90° in the direction of arrow II.

9 is set opposite a free end of the protective contact bracket 13 within the

10 connector pot 29. Inside the connector pot 29 are

11 two pairs of guide cheeks opposite each other. The second pair of guide cheeks is

12 cannot be seen due to the sectional view in Fig. 1.

14 Above the internal thread 28 and the screw opening 27 is the

There is a hole 31 centrally in the pot base 30.

ie On the surface of the pot facing the bottom of the housing shell 2

17 base 30, fixing bars 32,33 are formed. The fixing bars 32,33 run in

is Fig. 3 in the sliding direction 11. Its extension is aligned so that

19 the free ends of the fixing elements pointing to the bottom of the housing shell 2

20 webs 32 touch the protective contact bracket 13 at its base 25 and

21 the fixing webs 33 with the corresponding free ends the contact spring 14 tan-

22 yaw.

24 A side wall of the housing shell 2 contains an insertion opening 34 (Fig. 4)

26 for inserting a power cable not shown in the drawings. This power cable is connected to a

27 Clamp terminal 35 clamped for strain relief.

2β To establish the electrical contact between the contact elements

30 ten 13,14,15 with the corresponding conductors 4,5,6 the contact elements

31 elements 13,14,15 along the sliding direction 11 into their sliding position

32. The two-armed contact clamp 12 clamps the cross-section

33 of the bare conductors 4,5,6 with electrically contacting frictional connection between

34 join in.

35 If the conductors 4,5,6 are separately inserted rails or wires, the flat terminals 15 provide the electrical connection between

37 the conductors 4,5,6 and the cores of the power cable. For this purpose, the abiso-

38 The enamelled ends of the wires are clamped to the flat terminals 15. Using

27 October 1994

Patent attorneys Tergau & Pohl, Nuremberg .**··*· ·· ; Page 33.I .

&igr; the insulation displacement technology, the wires of the power cable form the conductors 4,5,6. &zgr; The flat terminals 15 and separately manufactured conductors 4,5,6 are then superfluous.

s The retaining bars 23 and the fixing pin 24 limit the sliding of the

6 protective contact bracket 13 in the sliding direction 11. While the fixing pin 24

&tgr; the protective contact bracket 13 is fixed in place, the retaining bars 23 support it

&bgr; The contact spring 14 is due to its resilient support against the inner

10 walls of the contact spring fixation 10 also before closing the

11 Power strip 1 fixed in place.

13 To securely lock the housing shells 2,3 after they have been placed on top of each other,

14, a fastening screw penetrates the hole 31 and the

is screw opening 27 and is screwed to the internal thread 28. Since this structure for screwing is located in the area of all plug pots 29, a secure closure of the housing is guaranteed .

ie After closing the housing, the contact elements 13,14 are

µm the fixing webs 32,33 are additionally fixed in position. The contact elements 13,14 have

21 Therefore, when inserting or removing a power plug, only a very small

22 small play along the sliding direction 11. The contact elements 13,14

23 therefore remain safely in their sliding position.

25 The previously described retaining pins 8, terminal fixing 9 and contact spring

2β xierung 10 are advantageous embodiments of the claims mentioned

27 retaining projections.

28 The previously described clamp fixing 9, contact spring fixing 10, retaining

29 web 23, fixing pin 24 and fixing webs 32,33 are advantageous embodiments of the fixing projections mentioned in the claims.

32 The guide cheeks 38 facilitate the fixing of the power plug directly

33 before inserting it into the connector housing 29. To do this, the two

34 protective contact plugs molded guide lugs in the rail-

35 39 of the two pairs of guide cheeks. During the process of pushing on the power plug, the guide cheeks 38 facilitate

37 also guides the power plug. The guide cheeks 38 are designed in such a way that the inner contour of the plug housing 29 matches the outer contour of the

27 October 1984

Patent Attorneys Tergau & Pohl, Nuremberg ,"..*"« «j ; &phgr;&iacgr;&Igr;&bgr;34&iacgr;&idigr;♦

&igr; safety plug is fitted in a form-fitting manner. This ensures that

2 that certain types of connectors requiring special technical and/or constructional

3 requirements - e.g. circular plugs without the contour of a

* Protective contact plug - not inserted into a plug socket 29

s can.

7 The contact areas 19 of all contact springs 14 are arranged in a line parallel

β to the longitudinal extension of the power strip 1. This arrangement of the

&bgr; contact springs 14 is advantageously designed for angled plugs

10 mains plug. The right-angled contact pins protrude from the

11 The power cable connection area of the power plug extends transversely to the longitudinal

12 tion of the socket strip 1 when the mains plug is inserted into a plug socket 29. This means that neither of the two immediately adjacent plug sockets 29 is covered by the angled plug. This means that several angled plugs can be inserted into immediately adjacent plug sockets 29 without causing mutual obstructions. This enables the

&eegr; maximum possible utilization of power strip 1.

27 October 1S94

Patent attorneys Tergau & Pohl, Nuremberg

List of reference symbols Power strip 35 clamp clamp Housing shell 36 Side wall 1 Housing shell 37 bracket opening 2 Protective conductor 38 Guide cheek 3 Conductive pathway 39 Travel 4 Conductive pathway 5 Conductor slot 6 Retaining pin 7 Clamp fixation 8th Contact spring fixation 9 Slide direction 10 Contact terminal 11 Protective contact bracket 12 Contact spring 13 Flat terminal 14 Contact arm 15 slot 16 Slot opening mouth 17 Contact area 18 Spring clip 19 Ironing board 20 Bridge strip 21 Holding bridge 22 Fixing pin 23 Floor space 24 Tenon opening 25 Screw opening 26 inner thread 27 Plug pot 28 Pot bottom 29 drilling 30 Fixing bar 31 Fixing bar 32 Insertion opening 33 34

27 October 1934

Claims (1)

Patent attorneys Tergau & Pohl, Nuremberg
&igr; 94812 3 27 October 1994 &bgr; Claims &thgr; 1. Multiple socket for mains plugs, especially earthed sockets 10 senleiste, 11 - with contact elements encapsulated in an insulating housing (13,14,15) 12 – for the electrical voltage supply and is — for the electrical connection in the area of individual plug sockets (29) &eegr; voltage extraction, and is - with in the direction of their longitudinal extension in the housing fixed position The conductors (4,5,6) for connecting contact elements (13,14,15) are the same &igr;? electric potential with each other, is characterized by 19 that the contact elements (13,14,15) of the same electrical potential each so individually according to the insulation displacement technique on the conductors (4,5,6) 2i are postponed. 23 2. Multiple socket for mains plug according to claim 1, 24 characterized by 25 that a conductor (4,5,6) is designed as a dimensionally stable rail. 27 3. Multiple socket for mains plug according to claim 1, 28 characterized by 29 that a conductor (4,5,6) is a wire fixed in its extended position. si 4. Multiple socket for mains plug according to one or more of the previous 32 claims, 33 characterized by 34 that the conductor (4,5,6) in the area of its contact with the contact elements (13,14,15) 35 clamp contacts on retaining projections (8,9,10) protruding from a housing shell (2) against its sliding direction (11) 37 is fixed, preferably positively in conductor slots (7) of a holding device 38 jumps (8,9,10). 27 October 1904 (Ui\ANV92648.TXT) Patent attorneys Tergau & Pohl, Nuremberg a 5. Multiple socket for mains plug according to one or more of the previous 3 outgoing claims, 4 characterized by 5 that the conductors (4,5,6) run at a distance above the bottom of a housing shell (2). s 6. Multiple socket for mains plug according to one or more of the previous 9 claims, 10 characterized by 11 that a conductor (4,5,6) is fixed in position to a housing shell (2) by injection molding or encapsulation with the Geiz housing material. &igr;* 7. Multiple socket for mains plug according to claim 1, is characterized by ie - that a contact element (13,14,15) carries a connection lug in one piece &eegr; and/or is - that the connection lug is designed as a two-armed contact terminal (12). zo 8. Multiple socket for mains plug according to claim 7, 21 characterized by 22 that the contact terminal (12) is designed essentially U-shaped, wherein the contact arms (16) are provided with a 24 Slot (17) between the U-legs form. ze 9. Multiple socket for mains plug according to one or more of the previous 27 claims, 28 characterized by 29 that the slot (17) of a contact terminal (12) for slot opening 30 mouth (18) is widened like a funnel. 32 10. Multiple socket for mains plug according to one or more of the previous 33 claims, 34 characterized by 35 - that the conductors (4,5,6) run approximately parallel to each other in the longitudinal direction of the strings of a stringed instrument, 37 - that each conductor (4,5,6) has an insulating sheath and October 27, 1994(U.Wft82648."DCT) * ,,'. '. ,* \ \ .' ·. ***, Patent Attorneys Tergau & Pohl, Nuremberg ,**»·· &igr; - that the contact arms (16) on their inner flanks cut out for 2 cutting the insulating sheath when sliding on the contact element 3 ments (13,14,15) onto the conductor (4,5,6). s 11. Multiple socket for mains plug according to one or more of the 6 claims arising from 7 characterized by &bgr; that the conductors (4,5,6) are the wires of a pre-assembled connecting cable 9 are. 10 11 12. Multiple socket for mains plug according to one or more of the preceding 12 claims, 13 characterized by 14 - that the contact elements (13,14,15) are acted upon by a housing shell (2,3) in the sliding direction and ie - that the loading areas from the housing shell (2,3) into the &igr;? There are fixing projections (9,10,23,24,32,33) protruding from the housing interior. ie 13. Multiple socket for mains plug according to claim 12, 20 characterized by 21 that fixing projections (23,24,32,33) are pre-tensioned on the contact elements 22 elements (13,14). 24 14. Multiple socket for mains plug according to claim 12 or 13, 26 characterized by 26 a positive engagement between fixing projections (9,10,24) and contact 27 elements (13,14,15). 29 15. Multiple socket for mains plug according to claim 14, so characterized by si that fixing projections (9,10) comprise contact elements (14,15). 33 16. Multiple socket for mains plug according to claim 15, 34 characterized by 35 that the enclosure is form-fitting. 27. Ofrtober 1S04 (Ui\ANV92648.TXT) *..J *. »* &iacgr;&Idigr; .* *. Patent attorneys Tergau & Pohl, Nuremberg &igr; 17. Multiple socket for mains plug according to claim 15 or 16, &zgr; characterized by 3 that the contact elements designed as contact springs (14) are 4 Provide spring support for the enclosure using the fixing projections (10). &bgr; 18. Multiple socket for mains plug according to one or more of the preceding T related claims, 8 characterized by &thetas; a &iacgr;&ogr; - substantially parallel to the conductors (4,5,6), 11 - between them and is - web strip (22) molded onto a housing shell (2). 14 19. Multiple socket for mains plug according to one or more of the preceding 15 claims, ie characterized by &eegr; that the holding projections (9,10) for the conductors (4,5,6) and the fixing 18 jumps (9,10) for the contact elements (14,15) formed by equal parts 19 are. 27. C&tobar 1934 (U:\ANte2648.7XT) *. _# J*. ·*£!,· * ·