热继模块及接触器

Abstract

本实用新型属于低压电器技术领域，公开一种热继模块及接触器。热继模块包括热继壳体、热继线路板和电流检测器件，热继壳体包括热继主壳体和设置于热继主壳体下端的延伸壳体，热继主壳体与安装壳体可拆卸连接，延伸壳体朝向基座延伸；热继线路板包括热继主线路板和延伸线路板，热继主线路板设置于热继主壳体内，延伸线路板与热继主线路板连接且延伸线路板的一部分延伸至延伸壳体内；电流检测器件设置于延伸线路板靠近基座的一端。该热继模块能够集成于接触器内，降低了整体体积；电流检测器件能够检测接线板的电流是否在要求范围内，实现对接触器的过载保护，通过电流检测器件直接检测接触板的电流，避免了外部接线，提高了安装效率。

Claims

1. A thermal relay module applied to a contactor, the contactor comprising a base (2) and a mounting housing (3) provided on the base (2), a terminal block being provided in the base (2), characterized in that, The thermal relay module (1) includes: A heat relay housing (11) is disposed inside the mounting housing (3). The heat relay housing (11) includes a main heat relay housing (111) and an extension housing (112) disposed at the lower end of the main heat relay housing (111). The main heat relay housing (111) is detachably connected to the mounting housing (3). The extension housing (112) extends toward the base (2). The thermal relay circuit board (12) includes a thermal relay main circuit board (121) and an extension circuit board (122). The thermal relay main circuit board (121) is disposed inside the thermal relay main housing (111), and the extension circuit board (122) is connected to the thermal relay main circuit board (121) and extends into the extension housing (112) in part. A current sensing device (13) is disposed on the end of the extension circuit board (122) near the base (2), and the current sensing device (13) is configured to detect the current of the terminal board.

2. The thermal relay module of claim 1, wherein, The mounting surface of the current sensing device (13) facing the extension circuit board (122) is perpendicular to the magnetic flux direction of the terminal block or forms an acute angle greater than 10°.

3. The thermal relay module of claim 1, wherein, A groove (1121) is provided at one end of the extended housing (112) away from the main heat relay housing (111), and the end of the extended circuit board (122) away from the main heat relay circuit board (121) is limited to the groove (1121). The two sides of the extended housing (112) are provided with limiting ribs (1122), and the extended circuit board (122) is sandwiched between the two limiting ribs (1122).

4. The thermal relay module of claim 1, wherein, The base (2) is provided with a limiting groove (231) corresponding to the extension shell (112), and the extension shell (112) is limited within the limiting groove (231).

5. The thermal module of claim 1, wherein, The mounting housing (3) has symmetrically distributed stepped surfaces (31) on both sides along its width direction; The main housing (111) of the heat relay is provided with buckles (1111) on both opposite sides, and the two buckles (1111) are respectively located on the stepped surfaces (31) on both sides of the mounting housing (3).

6. The thermal module of claim 1, wherein, The thermal relay module (1) further includes a thermal relay cover plate (14) for sealing the thermal relay main housing (111), and the thermal relay cover plate (14) is provided with a first communication port; The thermal relay main circuit board (121) is provided with a thermal relay signal connector (1211), which is located in the first communication port.

7. A contactor characterized by, include: A base (2) is provided with a wiring board inside the base (2). The wiring board includes an input wiring board (24) and an output wiring board (25) distributed at both ends of the base (2) along the length direction of the base (2). The mounting housing (3) is disposed on the base (2), and the mounting housing (3) has three receiving cavities (32); The control module (4), the electromagnetic module, and the thermal relay module (1) according to any one of claims 1-6 are respectively disposed in three of the three accommodating cavities (32), the accommodating cavity (32) for accommodating the thermal relay module (1) being close to the input terminal block (24) or the output terminal block (25), and the thermal relay module (1) is used to detect the current of the input terminal block (24) or the output terminal block (25).

8. The contactor of claim 7, wherein, The contactor also includes a main cover plate (5), which covers the two accommodating cavities (32) other than the accommodating cavity (32) that accommodates the thermal relay module (1). The main cover plate (5) is provided with two second communication ports. The control circuit board (41) of the control module (4) is provided with a power supply connector (411) and a control signal connector (412), which are located in two second communication ports respectively.

9. The contactor of claim 8, wherein, The control circuit board (41) is provided with a buffer (42), and the main cover plate (5) presses against the buffer (42).

10. The contactor of claim 7, wherein, The control circuit board (41) of the control module (4) is provided with signal lines; The thermal relay module (1) has a quick-connect port (1212) on its main circuit board (1212), and the signal line is detachably connected to the quick-connect port (1212).

Images