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1. WO2021001468 - RELAY WITH SPRING-BASED CONTACT SYSTEM

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

Claims

1. A relay with a spring-based contact system (3), the spring-based contact system (3) comprising:

at least two pairs of contacts (4, 5), each of which comprises one fixed contact piece (4.1; 5.1), which is attached to a first current-carrying component with a fixed location relative to the housing (6), and one contact piece (4.2; 5.2) that is movable relative to the fixed contact piece (4.1; 5.1), wherein the movable contact pieces (4.2; 5.2) are movably coupled with a slide (1) , so the contact pairs (4, 5) are openable and closable relative to each other;

a planar contact piece carrier (7) with the movable contact pieces (4.2; 5.2) attached on, the planar contact piece carrier (7) extending in its longitudinal section along its longitudinal axis (7.3) from a first end (7.1) up to a second end (7.2) and on the first end attached to a second current-carrying component with a fixed location relative to the housing (14), wherein the second end (7.2) of the contact piece carrier (7) is coupled with the slide (1), wherein the movable contact pieces (4.2; 5.2) are arranged and attached transversely to the longitudinal axis (7.3) side by side at the contact piece carrier and are movable independently from each other, and wherein the fixed contact pieces (4.1, 5.1) are arranged transversely to the longitudinal axis (7.3) side by side;

characterized in that the spring-based contact system (3) has at least one lead contact (5) and one lag contact (4) and a geometric offset for delayed opening or closing of the at least two pairs of contacts (4, 5) .

2. The relay with spring-based contact system according to claim 1, characterized in that the slide (1) holds the contact piece carrier (7) both from above and below in order to effect a movement for opening or closing the at least two pairs of contacts (4, 5) in the direction of motion and transversely to the longitudinal axis (7.3).

3. The relay with spring -based contact system according to one of the claims 1 or 2, characterized in that the contact piece carrier (7) is split into two spring legs (8, 9), to each of which one movable contact piece (4.2, 5.2) is attached.

4. The relay with spring -based contact system according to claim 2 or 3, characterized in that the contact piece carrier (7) is held from below by a lifting surface (11) of the slide (1) in order to lift the movable contact pieces (4.2, 5.2), wherein the geometric offset is produced in the form of step (2) on the lifting surface (11) of the slide (1) in such a way that one partial lifting surface (12) for a first movable contact piece (4.2) and one partial lifting surface (13) for a second movable contact piece (5.2) are on different levels in the direction of motion of the lifting movement.

5. The relay with spring -based contact system according to one of the claims 1 to 3, characterized in that the geometric offset in the form of a step (2) on the contact piece carrier (7) is produced in such a way that the two sections of the contact piece carrier (7) actuated by the mechanical coupling element are on different levels in the direction of motion.

6. The relay with spring -based contact system according to one of the claims 1 to 3, characterized in that the geometric offset is produced in the form of fixed contact pieces (4.1, 5.1) that are offset in the direction of motion of the movable contact pieces (4.2, 5.2) and thereby positioned on different levels.

7. The relay with spring -based contact system according to one of the claims 1 to 6, characterized in that the contact piece carrier (7) is constructed as a two-layer unit and comprises two straight layers (15, 16).

8. The relay with spring-based contact system according to one of the claims 1 to 7,

characterized in that the contact piece carrier (7) is constructed as a two-layer unit, comprising a first, straight layer (15) and a second layer (16), wherein the second layer (16) is also straight with the exception of one curve section (17) that projects outwards from its plane and stretches transversely to the longitudinal axis across the entire width of the contact piece carrier (7).

9. The relay with spring-based contact system according to one of the claims 1 to 8, characterized in that at least one overtravel spring (18) made of steel or a different spring material is attached to the second current-carrying component (14) as an additional spring element that applies a spring force to the contact piece carrier (7) and from there applies a spring force to the contact piece carrier (7) in the section on whose reverse side at least one of the movable contact pieces (4.2, 5.2) is located.

10. The relay with spring-based contact system according to claim 9, characterized in that the contact piece carrier (7) is produced from a material with a copper content of > 99.9% and does not necessarily have to possess spring characteristics.