US 11,081,296 B2Granted

Stationary contact assembly and corresponding switch contact

AssigneeSchneider Electric Industries SAS

InventorsHaifeng Tian, Patrick Larcher

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Abstract

Embodiments of the present disclosure provide a stationary contact assembly and a corresponding switch contact. The stationary contact assembly comprises: a stationary contact body (21); a stationary contact point (23) placed on the stationary contact body (21); and an arc-guiding member (25) fixed on the stationary contact body (21) and including an arc guiding portion (251), the arc guiding portion (251) comprising a first end (A) and a second end (B) that are opposite to each other, the first end (A) being close to the stationary contact point (23), a direction form the first end (A) to the second end (B) defining a main movement direction (F) of arc. The arc guiding portion (251) of the arc-guiding member (25) comprises an arc-guiding section (2511) at the first end (A), the arc-guiding section is adapted to guide the arc away from the stationary contact point (23) into the arc guiding portion (251), and the stationary contact point (23) is close to or in contact with the arc-guiding section (2511) in the main movement direction (F) of the arc. The stationary contact assembly of the embodiments of the present disclosure has an improved arc-guiding member that can guide the arc to quickly leave the contact point, enhance the mechanical strength of the stationary contact and reduce the production cost of the contact.

Claims15

Dependent claims

A stationary contact assembly comprising:

a stationary contact body;
a stationary contact point placed on the stationary contact body;
and
an arc-guiding member fixed on the stationary contact body and comprising an arc guiding portion, the arc guiding portion comprising a first end and a second end opposite to each other, the first end being close to the stationary contact point, a direction from the first end to the second end defining a main movement direction of an arc,
the arc guiding portion of the arc-guiding member comprising an arc-guiding section at the first end, the arc-guiding section being adapted to guide the arc away from the stationary contact point into the arc guiding portion, and
the stationary contact point being close to or in contact with the arc-guiding section in the main movement direction of the arc,
wherein the arc-guiding member further comprises a mounting portion adapted to fix the arc-guiding member onto the stationary contact body,
wherein the mounting portion is connected to the arc guiding portion, an opening is formed at a connection of the mounting portion and the arc guiding portion, and the opening is adapted to allow the stationary contact body to pass therethrough so that the stationary contact point is close to the arc-guiding section at the opening, and
wherein the mounting portion is formed with a support platform on a side adjacent to the opening, and the support platform supports the stationary contact body at the opening.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/387,796Filed 18 Apr 2019
Priority: CN 201820563270.719 Apr 2018
Published: US 2019/0333721 A131 Oct 2019
Granted: 3 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H01H 9/34
Means for extinguishing or preventing arc between current-carrying parts: stationary parts for restricting or subdividing the arc, e.g. barrier plate
H01H 9/46
Means for extinguishing or preventing arc between current-carrying parts: using arcing horns
H01H 9/446
Using blow-out magnet: using magnetisable elements associated with the contacts
H01H
Electric switches