CN-224204080-U - Switch module

CN224204080UCN 224204080 UCN224204080 UCN 224204080UCN-224204080-U

Abstract

The utility model relates to the field of low-voltage appliances, in particular to a switch module, wherein a contact system and an arc extinguishing system of the switch module are arranged in a module shell, the contact system comprises a moving contact mechanism and a fixed contact group, each group of arc extinguishing systems comprises an arc extinguishing chamber and a buffer chamber which is arranged in the module shell and is arranged side by side with the arc extinguishing chamber along a first direction d1, a plurality of arc extinguishing grid plates of the arc extinguishing chamber are arranged side by side at intervals, an arc inlet and an exhaust outlet of the arc extinguishing chamber are oppositely arranged along a third direction d3, the buffer chamber is communicated with the arc inlet of the arc extinguishing chamber, the first direction d1 is perpendicular to the third direction d3, the module shell also comprises arc extinguishing chamber exhaust windows arranged on the side walls of the module shell, each arc extinguishing chamber is communicated with the external environment through one group of arc extinguishing chamber exhaust windows, and the switch module is good in safety.

Inventors

LU KEJUN
GUO SHAOJUN
ZHOU CHANGQING
LI LI

Assignees

上海正泰智能科技有限公司

Dates

Publication Date: 20260505
Application Date: 20240513

Claims (10)

1. The switch module comprises a module shell (2-0), a contact system arranged in the module shell (2-0) and at least one group of arc extinguishing systems matched with the contact system, wherein the contact system comprises a moving contact mechanism (23) and a fixed contact group which are matched for use; The arc extinguishing system is characterized in that each group of arc extinguishing systems further comprises a buffer chamber (2-1) arranged in the module shell (2-0), the arc extinguishing chambers (24) and the buffer chambers (2-1) are arranged side by side along a first direction d1, the buffer chambers (2-1) are communicated with arc inlets of the arc extinguishing chambers (24), the first direction d1 is perpendicular to a third direction d3, the module shell (2-0) further comprises arc extinguishing chamber exhaust windows (2-02) arranged on the side walls of the module shell, and each arc extinguishing chamber (24) is communicated with the external environment through one group of arc extinguishing chamber exhaust windows (2-02).
2. The switch module as claimed in claim 1, wherein the module case (2-0) further comprises buffer chamber exhaust windows (2-03) provided on side walls thereof, each buffer chamber (2-1) being in communication with the external environment through a set of buffer chamber exhaust windows (2-03).
3. The switching module according to claim 1, characterized in that the module housing (2-0) comprises at least one set of subspaces and at least one set of partitions (2-04) arranged therein, the subspaces being in one-to-one fit with the arc extinguishing system, each subspace being divided by a corresponding partition (2-04) into an arc extinguishing chamber mounting chamber (2-06) and a buffer chamber (2-1) arranged side by side in the first direction d1, the arc extinguishing chambers (24) of the arc extinguishing system being arranged in the corresponding arc extinguishing chamber mounting chamber (2-06).
4. The switch module as set forth in claim 3, wherein the arc extinguishing system further comprises at least one set of contact arc striking structures, the arc extinguishing chambers (24) are in one-to-one fit with the contact arc striking structures, the contact arc striking structures comprise static arc striking pieces matched with the static contact sets and movable arc striking parts (23-11) matched with the movable contacts (23-1) of the movable contact mechanisms (23), the static arc striking pieces are opposite to the movable arc striking parts (23-11) to form arc striking channels, one ends of the arc striking channels are matched with the static contact sets and the movable contacts (23-1) in opposite directions, and the other ends of the arc striking channels are matched with arc inlets of the arc extinguishing chambers (24), after the movable contact mechanisms (23) are disconnected with the static contact sets, one ends of the partition plates (2-04) are opposite to the corresponding movable arc striking parts (23-11) along a third direction d3 to form second channels, and the arc inlets of the arc extinguishing chambers (24) are communicated with the corresponding buffer chambers (2-1) through the corresponding second channels.
5. The switch module as set forth in claim 4, wherein the arc striking channel is a horn-shaped arc striking channel, a small opening end of the arc striking channel is relatively matched with the fixed contact group and the moving contact (23-1), and a large opening end of the arc striking channel is relatively matched with an arc inlet of the arc extinguishing chamber (24).
6. The switch module as set forth in claim 4, wherein the fixed contact group comprises a first fixed contact (21) and a second fixed contact (22), the moving contact mechanism (23) comprises a moving contact (23-1), the moving contact mechanism (23) moves to enable two ends of the moving contact (23-1) to be respectively closed and opened with the first fixed contact (21) and the second fixed contact (22), and the two arc extinguishing systems are respectively located on two sides of the moving contact mechanism (23) in a third direction d 3.
7. The switch module according to claim 6, wherein in the fixed contact group, the first fixed contact (21) and the second fixed contact (22) are arranged at intervals side by side along a third direction d3, the fixed contact group and the moving contact mechanism (23) are arranged side by side along the first direction d1, and the moving contact mechanism (23) is arranged in an integrally moving manner along the third direction d 3.
8. The switch module as claimed in claim 7, characterized in that the module housing (2-0) further comprises limit stops (2-05), the two sets of limit stops (2-05) being arranged on both sides of the moving contact mechanism (23) in a third direction d3, respectively, in sliding engagement therewith.
9. The switch module according to claim 8, characterized in that the contact system is located in the middle of the module housing (2-0) in a third direction d3, two groups of arc-extinguishing chambers (24) are arranged on both sides of the contact system in the third direction d3, two groups of buffer chambers (2-1) are arranged on both sides of the contact system in the third direction d3, respectively, and the end of the partition (2-04) close to the contact system is opposite to the middle of the corresponding limit stop (2-05).
10. The switching module according to claim 2, wherein the arc extinguishing chamber exhaust window (2-02) and the buffer chamber exhaust window (2-03) are disposed on a side wall of the module case (2-0) perpendicular to the third direction d3 and are disposed at a side-by-side interval along the first direction d 1.

Description

Switch module Technical Field The utility model relates to the field of piezoelectric devices, in particular to a switch module. Background The prior switch module comprises a module shell, a contact system and an arc extinguishing chamber, wherein the contact system and the arc extinguishing chamber are arranged in the module shell, the contact system comprises a moving contact mechanism and a fixed contact group, the moving contact mechanism is integrally arranged in a moving way to be closed and opened with the fixed contact, the module shell is provided with an arc extinguishing chamber exhaust window matched with the arc extinguishing chamber, and gas in the arc extinguishing chamber is exhausted out of the module shell. When the contact system is disconnected, a large amount of high-temperature and high-pressure gas can be generated in the arc extinguishing chamber, the high-temperature and high-pressure gas can not be discharged in time due to the fact that the exhaust window of the arc extinguishing chamber is singly used, and explosion of the switch module can occur. In addition, the switch module lacks a necessary structure for guiding the moving contact mechanism, which causes the moving contact mechanism to deviate from a correct path during the action process, thereby affecting the reliability. Disclosure of Invention The utility model aims to overcome at least one defect in the prior art and provide a switch module which is good in safety. In order to achieve the above purpose, the utility model adopts the following technical scheme: The switch module comprises a module shell, a contact system arranged in the module shell and at least one group of arc extinguishing systems matched with the contact system, wherein the contact system comprises a moving contact mechanism and a fixed contact group which are matched, each group of arc extinguishing systems comprises an arc extinguishing chamber, each arc extinguishing chamber comprises a plurality of arc extinguishing grid sheets which are arranged side by side at intervals, and an arc inlet and an exhaust outlet of each arc extinguishing chamber are oppositely arranged along a third direction d 3; Each group of arc extinguishing systems further comprises a buffer chamber arranged in the module shell, the arc extinguishing chambers and the buffer chambers are arranged side by side along a first direction d1, the buffer chambers are communicated with an arc inlet of each arc extinguishing chamber, the first direction d1 is perpendicular to a third direction d3, the module shell further comprises arc extinguishing chamber exhaust windows arranged on the side walls of the module shell, and each arc extinguishing chamber is communicated with the external environment through one group of arc extinguishing chamber exhaust windows. Further, the module case further includes buffer chamber exhaust windows provided on sidewalls thereof, each buffer chamber being in communication with an external environment through a set of buffer chamber exhaust windows. Further, the module case includes at least one set of subspace and at least one set of baffle of setting in it, and subspace and arc extinguishing system one-to-one cooperation, and every subspace is separated into explosion chamber installation cavity and the buffer chamber that set up side by side along first direction d1 by corresponding baffle, and the explosion chamber of arc extinguishing system sets up in the explosion chamber installation cavity that corresponds. Further, the arc extinguishing system further comprises at least one group of contact arc striking structures, the arc extinguishing chamber is matched with the contact arc striking structures one to one, the contact arc striking structures comprise static arc striking pieces matched with the static contact groups and movable arc striking parts matched with the movable contacts of the movable contact mechanisms, the static arc striking pieces are opposite to the movable arc striking parts to form arc striking channels, one ends of the arc striking channels are matched with the static contact groups and the movable contacts relatively, the other ends of the arc striking channels are matched with arc inlets of the arc extinguishing chamber relatively, after the movable contact mechanisms are disconnected with the static contact groups, one ends of the partition plates are opposite to the corresponding movable arc striking parts along a third direction d3 to form second channels, and the arc inlets of the arc extinguishing chambers are communicated with the corresponding buffer chambers through the corresponding second channels. Further, the arc striking channel is a horn-shaped arc striking channel, the small opening end of the arc striking channel is matched with the fixed contact group and the moving contact relatively, and the large opening end of the arc striking channel is matched with the arc inlet of the arc extinguishing chamber relat