DE7834456U1 - Protective conductor terminal block for top hat rails - Google Patents

Description

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Speaker & Schuh AG, CH-5001 Aarau

Protective conductor terminal block for top hat rails

So-called top hat rails are described, for example, in standard sheet DIN 46 277 sheets 2 and 3. You can at yourself have edge flanges of the same width of different widths. For this reason, protective conductor terminal blocks are according to DE-AS 23 64 971 cannot be used universally because a horizontal clamping force occurs which would deform the rail if there were no internal counter-attack on it. The clamp is therefore limited to a single rail profile as well as dangerous for the rails.

Similar disadvantages are also given with a clamp according to DE-OS 26.19 506.

A terminal according to DE-AS 24 61 331 is true in terms of Width of the edge flanges can be used more universally, but their design is complicated, as is the case with the terminal according to DE-OS 26 1 9 506 and laborious. It also requires increased assembly effort. Your screw can only be operated from one side.

A terminal according to CH-PS 532 253 has the disadvantage that it a reinforcement for the screw is required on the hook. The screw can only be operated from one side. There is the Risk of rail damage by over-tightening the screw.

The invention is based on the object of the terminal block

to be improved according to the preamble of claim 1 so that they can be used on top-hat rails with edge flanges of different widths and the risk of rail damage is at least greatly reduced, without compromising the contact.

A protective conductor terminal block according to claim 1 solves this problem in a simple manner, the simple placement and the secure hold of the clamp on the rail can be guaranteed and through the special design and arrangement of the clamping lever and the arrangement of its actuating screw ensure both secure contact and adequate safety can be reached by rail.

The terminal block can advantageously be in an insulating housing be accommodated, which is at least not uncomplicated in certain known terminals.

Said clamping lever is designed with one arm. It therefore does not develop any compression forces in the rail plane, especially its pivot point is stationary. The required pressing forces can be achieved by selecting the appropriate length of the force arm of the screw guaranteed and yet limited. The clamping lever can be electrically connected to the clamping body in a simple manner be connected. It is usually made of metal.

The foot of the clamp is usually made entirely of metal.

The invention will be explained in more detail below with reference to the schematic drawing, for example. Show it:

1 shows a partially sectioned and broken side view of an inventive device placed on a top-hat rail Terminal block,

Fig. 2 is a section along line II-II in Fig. 1 through the

Foot and the clamping lever, and

Fig. 3 is a section along line III-III in Fig. 1 through the Foot and the clamping lever.

In the insulating housing 1, a clamping body 2, 3 is held, which in a manner not described in detail with the shaft 4 of the metal Foot 5 is electrically and mechanically connected. The foot 5 surrounds with its hook 6 the edge flange 1 01 of the top hat rail 100, while it rests with its support leg 7 on the rail flange 1 02 above. This is the location of the defined throughout the terminal.

A firm hold and secure electrical contact are guaranteed the clamping lever 8, the walls 8 'and 8 "of which partially enclose the foot 5 between them, and its hook 9 the rail flange 1 02 engages under.

The lever walls 8 ¹ and 8 "are connected to the hook 9 through the web 1 14, at the pivot point 13 through the web 15 and at the threaded hole 1 0 for the screw 11 through the tabs 1 6 and 17 mitei-I nander.

$ The tab 130 protruding from the wall 8 'serves as a measuring

§ ser-like bearing of the clamping lever on the underside of the foot 5 ί When tightening screw 1 1, its end is supported at the top

| ^; on the shaft 4 of the foot 5 and pulls the clamping lever 8 upwards so that it pivots around the point 13 with its hook 9 (;: at the bottom of the rail flange 102, whereby it moves slightly; · ■ outwards in the hook area so that no compression forces can arise in the rail plane.

The line of action 12 of the screw goes between the hook

;;, ^: 9 and pivot point 13 through it.

['' ■ The closer the line of action 12 is to the pivot point 13, the more

■ '■, · the effect on the hook is less 9 ·

p; The stationary arrangement of the pivot point 1 3 helps

■ 'to counteract damage to the rail.

Summary (Fig. 1)

An economical and safe one for the top-hat rail (100) Protective conductor terminal block has a metal clamping body (2, 3) and a metal puss (5) connected to it. Of the Foot (5) engages under a rail flange (101) with a hook (6) and rests with a support leg (7) on the other rail flange (102), which is gripped from below by the hook (9) of a clamping lever (8). The clamping lever (8) is on the foot (5) a stationary pivot point (13) mounted pivotably. He is can be tensioned by the screw (11), the line of action (12) of the The screw runs between the hook (9) and the pivot point (13) .

Claims (8)

sL-ri; ■ -., anti ■: ·: · -: · :. '- -' 'Roses:. · .: 7 /! 1st AUfJ. 2Ö,, "., D-8000 Munich 2 - 1 - · Protection claims 1. Protective conductor terminal block for DIN rails, with a metal clamp body, a metal puss electrically connected to it, which has a hook to reach under the one Flange and a support leg for resting on the other face of a top hat rail lying at ground potential, as well as a pivotable clamping lever which cooperates with the support leg and can be actuated by a screw Hook for reaching under the relevant DIN rail flange, characterized in that the line of action (12) of the screw (11) between the clamping lever hook (9) and the pivot point (13) of the clamping lever (8) runs. 2. Terminal block according to claim 1, characterized in that that the line of action (12) of the screw (11) closer to the pivot point (13) than the hook (9) of the clamping lever (8). 3 Terminal block according to Claim 1 or 2, characterized in that that the clamping lever (8) is designed angularly. 4. Terminal block according to claim 3, characterized in that the screw (11) in a threaded bore (10) of the clamping lever (8) is supported sitting from above on the foot (5). 5. Terminal block according to claim 4, characterized in that the clamping lever (8) has two walls (8 ', 8 ") between which part of the foot (5) is included. 6. Terminal block according to claim 5, characterized in that the two walls (8 ', 8 ") of the clamping lever (8) when Clamping lever hooks (9) have a connection (14). 7. Terminal block according to claim 6, characterized in that the two lever walls (8 ¹ , 8 ") also have connections (16, 17; 15) at the point of application (10) of the screw (11) and at the pivot point (13). 8. Terminal block according to one of claims 1 to 7, characterized in that it has an insulating housing (1).