Contact slide unit for a switching unit

Abstract

The disclosure relates to a contact slide unit for a switching unit, including a contact slide inside which a movable contact piece is guided, wherein the contact piece is biased from one side by a contact load spring. The disclosure also relates to a method for assembling the contact slide unit. The disclosure is characterized in that the movable contact piece is mounted in a winding interstice between two windings of the contact load spring.

Claims

1. A contact slide unit for a switching unit, the contact slide unit comprising: a contact slide; a moving contact piece guided within the contact slide, wherein the moving contact piece has a top side and a bottom side, and wherein the contact slide is positioned on the top side of the moving contact piece; and a contact load spring, wherein one side of the moving contact piece is acted on by the contact load spring, and wherein the moving contact piece is mounted in a turn gap between two turns of the contact load spring such that a first part of the contact load spring is positioned above the top side of the moving contact piece, a second part of the contact load spring is positioned below the bottom side of the moving contact piece, and the turn gap is positioned between the first part and the second part of the contact load spring.

2. The contact slide unit of claim 1, wherein turns of the contact load spring positioned above the top side of the moving contact piece are guided by a contour in the contact slide.

3. The contact slide unit of claim 2, wherein turns of the first part of the contact load spring positioned above the top side of the moving contact piece have a narrowing diameter extending in a direction away from the top side of the moving contact piece.

4. The contact slide unit of claim 2, further comprising: a spacer positioned in the contact load spring between a last turn on the bottom side of the moving contact piece and a first turn on the top side of the moving contact piece.

5. The contact slide unit of claim 4, wherein the spacer is level with a longitudinal edge of the moving contact piece.

6. The contact slide unit of claim 2, wherein the contour in the contact slide is conically tapered.

7. The contact slide unit of claim 6, wherein turns of first part of the contact load spring positioned above the top side of the moving contact piece have a narrowing diameter extending in a direction away from the top side of the moving contact piece.

8. The contact slide unit of claim 7, further comprising: a spacer positioned in the contact load spring between a last turn on the bottom side of the moving contact piece and a first turn on the top side of the moving contact piece.

9. The contact slide unit of claim 8, wherein the spacer is level with a longitudinal edge of the moving contact piece.

10. The contact slide unit of claim 9, wherein the moving contact piece has opposing projections.

11. The contact slide unit of claim 6, further comprising: a spacer positioned in the contact load spring between a last turn on the bottom side of the moving contact piece and a first turn on the top side of the moving contact piece.

12. The contact slide unit of claim 11, wherein the spacer is level with a longitudinal edge of the moving contact piece.

13. The contact slide unit of claim 1, wherein turns of the first part of the contact load spring positioned above the top side of the moving contact piece have a narrowing diameter extending in a direction away from the top side of the moving contact piece.

14. The contact slide unit of claim 1, further comprising: a spacer positioned in the contact load spring between a last turn on the bottom side of the moving contact piece and a first turn on the top side of the moving contact piece.

15. The contact slide unit of claim 14, wherein the spacer is level with a longitudinal edge of the moving contact piece.

16. The contact slide unit of claim 1, wherein the moving contact piece has opposing projections.

17. A circuit breaker comprising: a contact slide unit, the contact slide unit having: a contact slide; a moving contact piece guided within the contact slide, wherein the moving contact piece has a top side and a bottom side, and wherein the contact slide is positioned on the top side of the moving contact piece, and a contact load spring, wherein one side of the moving contact piece is acted on by the contact load spring, and wherein the moving contact piece is mounted in a turn gap between two turns of the contact load spring such that a first part of the contact load spring is positioned above the top side of the moving contact piece, a second part of the contact load spring is positioned below the bottom side of the moving contact piece, and the turn gap is positioned between the first part and the second part of the contact load spring.

18. A method for assembling a contact slide unit for a switching unit, the method comprising: providing a moving contact piece having a top side and a bottom side, inserting the moving contact piece into a turn gap in a contact load spring to provide a structural unit, wherein: a first part of the contact load spring is positioned above the top side of the moving contact piece, a second part of the contact load spring is positioned below the bottom side of the moving contact piece, the turn gap is positioned between the first part and the second part of the contact load spring, and one side of the moving contact piece is acted on by the contact load spring; and fitting the structural unit in a contact slide, wherein the contact slide is positioned on the top side of the moving contact piece.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantages and embodiments of the disclosure are explained in more detail in the following text with reference to an exemplary embodiment and with reference to the drawing, in which, schematically:

(2) FIG. 1 depicts a perspective sectional illustration of a contact slide unit with a contact slide and a moving switching piece, as well as a contact load spring, according to an embodiment.

(3) FIG. 2 depicts a perspective illustration of a moving contact piece, according to an embodiment.

(4) FIG. 3 depicts a perspective illustration of a structural unit including a moving contact piece and a contact load spring, according to an embodiment.

(5) FIG. 4 depicts a perspective illustration of a contact load spring, according to an embodiment.

DETAILED DESCRIPTION

(6) FIG. 1 depicts a contact slide unit with a contact slide 1 and a moving contact piece 2 guided therein. The contact slide 1 may be U-shaped with a central region 3, which has four side edges, a top side, and a bottom side, and two lateral guides 4 arranged opposite one another. The lateral guides 4 lead into the central region 3. A conically tapering contour 5 may be arranged on the inner side of the central region 3 of the contact slide 1, the contour proceeding from the top side in the direction of the moving contact piece 2.

(7) The top side 6 of the moving contact piece 2 has a contact pad 7 on each side next to the contact slide 1. The bottom side 8 of the moving contact piece 2 is mounted on a contact load spring 9. The last turn of the contact load spring 9 below the moving contact piece 2 transitions into a spacer 10, which may be level with the moving contact piece 2. The spacer 10 transitions into the first turn of the contact load spring 9 on the top side 6 of the moving contact piece 2. Accordingly, the moving contact piece 2 is mounted or clamped in a turn gap of the contact load spring 9. The turns above the moving contact piece 2 may be formed with a narrowing diameter. The conically formed contour 5, for example, engages with the turn above the moving contact piece 2 with the result that the turns are fixed and guided.

(8) FIG. 2 illustrates the geometry of the moving contact piece 2. The moving contact piece 2 may be web-shaped with a top side 6, on which a contact pad 7 is arranged in each of the two end regions 11, 12. The end regions 11, 12 of the moving contact piece 2 may be embodied to be easily bent downward. Projections 15, 16, which may be embodied to be quarter-concentric, are arranged on the longitudinal edges 13, 14 of the moving contact piece 2. The projections 15, 16 may be rotated by 180 with respect to one another, arranged on opposing longitudinal edges 13, 14.

(9) FIG. 3 illustrates a structural unit including a moving contact piece 2 and a contact load spring 9. This assembled structural unit including the moving contact piece 2 and the contact load spring 9 is used in the contact slide 1 as a complete component.

(10) FIG. 4 illustrates the contact load spring 9. The contact load spring 9 includes two structural units. The first structural unit includes the lower part 17 of the contact load spring 9, which has numerous turns that may have the same diameter and thus forms a cylindrical body. The second structural unit of the contact load spring 9 includes the upper part 18. The upper part 18 has only a few turns, which may have a narrowing diameter. The lower part 17 is connected to the upper part 18 of the contact load spring 9 by a spacer 10. The spacer 10 makes the enlarged turn gap, for example, of the contact load spring 9 possible, with the result that the moving contact piece 2 may be inserted and clamped in the turn gap.

(11) The contact slide unit is characterized in that a possibility has been found whereby the moving contact piece is positioned in a rotationally secure manner by way of a simple modification to the geometry of the contact load spring. No additional parts are required for this. The assembly processes may also proceed as previously.

(12) Although the disclosure has been illustrated and described in detail by the exemplary embodiments, the disclosure is not restricted by the disclosed examples and the person skilled in the art may derive other variations from this without departing from the scope of protection of the disclosure. It is therefore intended that the foregoing description be regarded as illustrative rather than limiting, and that it be understood that all equivalents and/or combinations of embodiments are intended to be included in this description.

(13) It is to be understood that the elements and features recited in the appended claims may be combined in different ways to produce new claims that likewise fall within the scope of the present disclosure. Thus, whereas the dependent claims appended below depend from only a single independent or dependent claim, it is to be understood that these dependent claims may, alternatively, be made to depend in the alternative from any preceding or following claim, whether independent or dependent, and that such new combinations are to be understood as forming a part of the present specification.