DE7520978U - Adapter for a three-pole busbar - Google Patents

Description

Lüdenscheid, June 27th, 1975

UktaKheki, ° ™ *** W * > 23.27 P / Ho 8

ι Utility model registration

Hoffmeister -Leuchten KG,; 588 Lüdenscheid

"Adapter for a three-pole busbar" ^ r.)! . >

j The invention relates to an adapter for

an essentially U-shaped transverse

'' three-pole current

rail with one conductor each (Mp and R)

on the two side walls and a rope ladder on the floor or on a side wall,

; with one in the intake channel of the current

; rail insertable, protruding tongues

for the contacts with the bodies having the base part and one of the edges of the intake catjal overlap oil headboard, on which the busbar rests

\ gender the bottom protrudes a springy

the bolt that engages in the contact position of the adapter in the receiving channel is arranged.

In a known adapter of this type

7520978 10/30/75

the latch is resiliently formed on the base plate through two plate incisions and with provided with a bent actuating bar, through which the bolt against the deflection of the material can be bent back into the plane of the base plate, whereas he protrudes from the base plate without external influence and in the power rail inserted adapter causes the locking in the contact position. This to the Bottom plate molded bolt has the disadvantage that the adapter if inserted incorrectly easily remains in the busbar in a position in which the latch is not yet is locked into the receiving channel of the rail, especially since the locking is almost noiseless is going. However, if the locking position is not reached, so form between the Conductors of the busbar and the contact

After a short time, Schmoxstellen off »On Another disadvantage of this adapter is that the contact tongues are rigid, ie not resilient are designed so that they at least when turning the adapter into the latching position

75? 0978 10/30/75

In the last area of this turning process, scrape on the conductors of the busbar. This scratches the conductor surface, which also favors the training of Schroff positions.

The object of the present invention, loading r is to provide fine Adapter for three-pole power rails in which a safe, easily recognizable to the operator and audible snaps into place. In addition, it should be ensured that the contact tongues only come into contact with the conductors of the busbar when the adapter snaps into place and not, as in the case of the known adapter, at an acute angle to the conductors of the busbar, but through an angle essentially perpendicular to these conductors Approach movement.

According to the invention this object is achieved in that the bolt on the side wall of the Head part is slidably mounted and guided parallel to the base part and between

7520978 10/30/75

I i *

-A-

one on the inside of the bolt and one with the housing of the head part firmly connected part a clock spring pressing the latch into the latching position is inserted. Due to this bolt design, a significantly larger bolt stroke is in the locked position (2 to 10 mm,

ö especially 5 mm) possible for one only standing under the material suspension ^ bars (1 mm) ι because the elastic limit and the am Adapter available bending length in the latter case only a small bolt stroke allow·

According to the preferred embodiment of the invention it is provided that the two tongues for contact with the conductors (Mp, R) are designed as ends of pivotably mounted conductor fingers and an approach of the Latch is engaged with the conductor fingers such that the ends of the conductor fingers at a displacement of the bolt against the force of the clock spring in the base part will. The resulting cooperation of

7520978 10/30/75

-5-

Locking movement of the bolt with the pivoting movement of the Letlterfinc, - r ensures, that the tongues of the adapter do not come into contact with the conductors of the busbar as long as the latch does not go into the open » receiving gap of the busbar is engaged. This creates a sliding and, in particular, scraping contact between the tongues of the adapter and the conductors of the power rail when turning the doss adapter into the and avoided from the locking position

It is preferably provided that the conductor fingers are designed as unequal levers which are held in a stop position by springs, in particular spiral leg springs, in which the long lever arms are spread apart and the short lever arms have the smallest distance from one another. The formed on the lever arms contact blades are thus in the absence of exposure to an altitude of the bolt, that is when the latter is in engaged position, according to outsid / i in the contact position with the heads of

7520978 10/30/75

Busbar held, and only by lifting the latch against the force of the clock spring the ends of the long lever arms protruding from the base part against the Swiveled in by force of their springs.

Furthermore, according to the preferred embodiment

. ) form provided that on the approach of the slider a cam is formed, which at the ψ displacement of the bolt with the two

Conductor fingers, preferably their short lever arms, and causes the conductor fingers to pivot in the opposite pivoting direction, so that the lengths are moved towards one another and their contact with the conductors (Mp, R) of the busbar

~ _{ ne is interrupted. The parallel |

Axes of pivotable conductor fingers have curved, opposite one another short hebar, and the cam is arranged between these short lever arms in such a way that that the cam shift caused by the bolt stroke leads to an attack of the cam leads to the short lever arms of the contact finger, whereby the straight cam movement

7520978 10/30/75

Ji

movement in opposing pivoting movements of the ladder fingers ungeformt'vwijrd, so that the long lever arms of the ladder fingers be pivoted into the base part when the bolt is disengaged and pivoted out when it is engaged.

Conveniently, the ends of the long (arms of the ladder fingers forming the Contacts roughly angled in opposite directions Turned direction. They are thus approximately perpendicular from the base part and come through a substantially perpendicular movement towards the conductors (Mp, R) in contact with them.

Preferably, the tongue for the earth conductor is a bottom-side emerging from the base part, perpendicular to the bottom surface of the base part move "! I stored, in Direction of the bottom surface of the busbar resiliently pretensioned contact fingers, This the Earthing of the power consumer connected to the adapter ensuring the contact finger is just like the contact tongues

7520978 10/30/75

iiafl ι «· · ·

-8th-

resiliently biased in the contact direction, but the displacement of the contact finger is not coupled with the displacement of the bolt, so that the Brdkontakt is given before the adapter snaps into place. Since | the contact fingers and i applies in any case perpendicular to the surface arranged on the bottom surface of the busbar ground conductor (J come the disadvantages set forth above a scraping contact is here in elimination · \

The conductor finger and the contact finger in the; Headboard come with sockets and screws Provide connection of lead wires. In the case of the conductor fingers, it is advantageous to use the sockets Molded bearing pins. The contact fingers provided with suitable holes are ^ pushed onto these pins and pivoted about them.

According to the preferred embodiment of the erfindungsgercässer Adapter is also provided that the head part essentially consists of a base part on the underside and the side the base plate supporting the ledger guide,

7520978 10/30/75

ii
k 1 t

-9-

a cover plate that can be screwed to the base plate and a bow-shaped side wall part which is held between the base and cover plate and which is screwed to one another and enclosing the locking guide between its ends. The separate detached sidewall part facilitates internal mounting of the adapter and in particular ^J sondere the connection of the short ^T on wires ι leading to the carried by the adapter power consumers.

In the drawing, the subject matter of the invention is based on a preferred exemplary embodiment shown. They show: FIG. 1, an end view of the adapter Sockelteilι pushed into the busbar with only the latch of the underside of the rail of the front busbar leg (not shown) is applied)

2 shows an end view of the adapter with the base part completely pushed into the busbar} with the bottom plate of the adapter of the underside of the front busbar not shown in addition to the latch.

7520978 10/30/75

thigh rests;

Pig. 3 shows a side view of the adapter with the base part completely inserted into the busbar and the latch locked into the receiving gap, the front busbar leg not being shown
4 shows a partial section of the adapter along the line II-II of FIG. 2, where the side wall part and cover plate and parts of the base are omitted;

Fig. 5 is a section along the line III-III of 3, the side wall part and cover plate as well as parts of the base of the adapter again being omitted;

FIG. 6 shows a section similar to FIG. 5, but with the latch engaged in the receiving slot of the busbar; FIG.
7 shows the two stepped ladder fingers with retracted cams and spread long lever arms on an enlarged scale, and FIG. 8 shows the two pivotable ladder fingers with short lever arms spread by the cam in the outer end position (switching position).

FIGS. 1 to 3 show a busbar

7520978 10/30/75

41

-11-

in longitudinal section with the front leg omitted so that a conductor Mp is visible.

The adapter consists of a bottom plate 2 HIIT molded-Sxozkk base part ^2a and the end face object formed bolt guide 2 ~, a cover plate 3, a Seitenwan- dung part 4 inserted between the bottom plate 2 and top plate 3 and a displaceably mounted in the bolt guide 2 bar 5. In the 1 and 3 the laterally protruding contact tongues 6 ^{a of} the conductor fingers 6 are also visible, which are in contact with the conductors Mp, R in the latched position of the adapter shown in FIG. 3, but in the ones shown in FIGS Adapter layers have no contact with these conductors.

From Fig. 4 it can be seen that between a shoulder 5 ^{a of} the bolt 5 and one with the bottom plate 2 ··. firmly connected insert part 7 a coil spring 8 is used, which presses the slide 5 resiliently into the latching position shown in FIG. At the approach 5 ^{a of} the bolt 5, a cam 5 is formed which, when the bolt 5 is shifted in the

7520978 10/30/75

in the bolt guide 2 rait dan ladder fingers δ Can come into engagement, as atps the fig, 5 and 6 can be clearly seen.

Fig, 5 shows the adapter fully inserted in the conductor rail 1 Sokkelteil 2 ^a, but the bolt 5 check in the disengaged position is · Xn W this position presses the cam 5, the short lever arms of the lead fingers 6 against the force of the coiled leg spring 8 outside, so that the long arms of the conductor fingers 6 with the contact tongues 6 ^a bent outwards at an angle are pivoted inwards and cannot have any contact with the conductors Mp, R. In FIG. 6, however, the adapter has been rotated into the snap-in position and the bolt 5 has locked into the socket of the power rail. The cam 5 has moved out of engagement with the short arms of the conductor fingers 6, so that dle-S se moves towards one another under the action of the springs 8 and the tongues 6 ^{a are} spread apart and in contact with the conductors Mp ₁ R of the busbar 1 succeeded. Xin this position also stands

1 *

i
■ ι ι

I.
i · · ι

-13-

the resilient forgetting $ 86 & contact finger 2 ^C

in contact with the earth conductor E of the busbar «

7 and 8 show the design of the conductor fingers and the cam 5 on an enlarged scale, FIG. • j latching position (x) and Fig. 8 the bin latching 0

position (y). The conductor fingers 6; are as double-arm to the center of gravity 11

; * ··. · Swiveling levers, whose long ·

j ι

j Lever arms 6 with the formation of the contact _:

tongues 6 ^a are bent at an angle in opposite »directions. The contact fingers $:

each carry two brackets bent at an angle 6

each with a hole 6 ^e . The sockets 9 with the clamping screws 10 for the connection of the l-> conductor wires are immovably mounted in the base plate 2. On the side opposite the clamping opening, they carry a pin 9 ^a , onto which the conductor fin 6 with the two opposing bores 6 ^{e are} pushed so that the pins 9 ^a serve as pivot bearings for the conductor fingers 6,

] each of a two-legged clock spring 12

be pivoted.

7520978 30.io.75

, -14-

The adapter ensures easy locking in the Aufηahmeschlitz of the power rail and, by coupling the latching process with the pivoting movement of the contact tongues, offers the advantage that the current is drawn off is only possible when the adapter is engaged and any contact is avoided in which the contact tongues of the adapter have a scraping effect on the conductor of the busbar.

7520978 10/30/75

Claims (8)

Protection claims 1. Adapter for a three-pole busbar with a substantially U-shaped cross-section, each with a conductor (Hp ₁ R) on the two side walls and an earth conductor on the bottom or on one side wall, with a protruding tongue that can be inserted into the suspension channel of the busbar for the contacts with the conductors having a base part and a head part which crosses the edges of the receiving channel and on the underside of which the busbar rests a resiliently protruding bolt which latches into the receiving channel in the contact position of the adapter, characterized in that the bolt (5) on the side wall of the head part parallel to the base part (2 ^a ) displaceably mounted and guided and between a projection (5 ^a ) formed on the inside of the bolt (5) and a part connected to the housing (2, 3, 4) of the head part ( 7) a clock spring (8) pressing the latch (5) into the locked position is inserted. 7520978 10/30/75 2. Adapter according to claim 1, characterized in that the two tongues (6a) for contact with the conductors (Mp, R) are designed as ends of pivotably mounted conductor fingers (6) and a shoulder (5 ^a ) rnit the conductor fingers (6) are in engagement, that the ends of the conductor fingers (6) when the bolt (5) is displaced against the Be swiveled into the base part (2) by force of the clock spring (8). 3. Adapter according to claim 1 and 2, characterized in that the ladder stirrups (ψ) are designed as unequal-armed levers which ϊ are held in a stop position by leg springs (12) in which the long lever arms (6) are spread and the short ones Lever arms (6) have the smallest distance from each other. 4. Adapter according to claim 2 or 3, characterized in that the extension (5 ^a ) of the Latch (5) a cam (5) is formed, . ', which when moving the lever (5) 752C978 jO.10.75 -17- with the two conductor fingers (67, default a. wise their short lever arms (6), comes into engagement and causes the pivoting of the conductor fingers (6) in the opposite pivoting direction, so that the tongues (6 ^a ) are moved towards each other and their contact with the conductors (Mp, R) of the busbar ( 1) is interrupted. 5. Adapter according to one of claims 1 to 4, characterized in that the ends of the long arms (6} of the conductor fingers (6) with the formation of the contact tongues (6 ^a ) are bent approximately at an angle in the opposite direction. 6. Adapter according to one of claims 1 to 5, characterized in that the conductor finger (6) -v- and the contact finger (2 ^C ) in the head part with sockets (9) and screws {10) are provided for connecting lead wires. 7. Adapter according to one of claims 1 to 6, characterized in that the head part in the 7520978 10/30/75 ti · Il I »ί ι <: • lyilll t * 1 6th -18- For the applicant ^ patent attorney: j / essentially of an underside of the base part (2 ^a) and laterally the bolt guide (2) supporting bottom plate (2), a screwed to the bottom plate (2) cover plate (3) and a bow-shaped, verechraubten between the nQKLteinander base and cover plate (2 and . 3) and between its ends the locking guide (2) ) enclosing side wall part (4) | consists. 8. Adapter according to one of claims 1 to 7, characterized} that the tongue for the earth conductor (E) a bottom side from the base part (2 ^l ) exiting, vertically fier base plate (2) displaceably mounted, in the direction of the bottom surface of the Busbar (1) is spring-loaded contact finger (2 ^C ). 7520978 10/30/75