阅读说明：本技术 一种带电路板的密封型高压直流继电器 (Sealed high-voltage direct-current relay with circuit board ) 是由 唐锋 郝顶 谭忠华 陈旭东 吴京洧 于 2019-08-27 设计创作，主要内容包括：本发明公开了一种带电路板的密封型高压直流继电器,包括静触点引出端、内支撑罩、铁杯、线圈架、外壳、电路板和密封胶体层；两个静触点引出端分别装在内支撑罩的顶部；内支撑罩装在铁杯的上部,线圈架装在铁杯的底部；内支撑罩和铁杯一起装入外壳的内腔中,密封胶体层覆盖在内支撑罩和铁杯的上面,密封胶体层的边缘与外壳的内腔壁相接触；电路板设置在密封胶体层的上方,线圈架装有长条薄片型的线圈引出片,线圈引出片的上端穿过内支撑罩而与电路板焊接相固定并实现电连接,密封胶体层包覆于线圈引出片的在内支撑罩与电路板之间的其中一段。本发明的这种结构,可以避免现有技术中因电路板安装在由胶体层密封后的外壳腔内所造成的弊端。(The invention discloses a sealed high-voltage direct-current relay with a circuit board, which comprises a stationary contact leading-out end, an inner supporting cover, an iron cup, a coil rack, a shell, the circuit board and a sealing colloid layer, wherein the inner supporting cover is arranged on the inner side of the stationary contact leading-out end; two stationary contact leading-out ends are respectively arranged at the top of the inner support cover; the inner support cover is arranged at the upper part of the iron cup, and the coil rack is arranged at the bottom of the iron cup; the inner support cover and the iron cup are arranged in the inner cavity of the shell together, the sealing colloid layer covers the inner support cover and the iron cup, and the edge of the sealing colloid layer is contacted with the wall of the inner cavity of the shell; the circuit board is arranged above the sealing colloid layer, the coil frame is provided with a long strip sheet-shaped coil leading-out piece, the upper end of the coil leading-out piece penetrates through the inner support cover to be fixed with the circuit board in a welding mode and realize electric connection, and the sealing colloid layer is coated on one section of the coil leading-out piece between the inner support cover and the circuit board. The structure of the invention can avoid the defects caused by the circuit board arranged in the shell cavity sealed by the colloid layer in the prior art.)

1. A sealed high-voltage direct-current relay with a circuit board comprises a stationary contact leading-out end, an inner support cover, an iron cup, a coil frame, a shell, the circuit board and a sealing colloid layer; the inner support cover is provided with an inner cavity with a downward opening, and the two stationary contact leading-out ends are respectively arranged at the top of the inner support cover and extend the bottom end into the inner cavity of the inner support cover; the iron cup is provided with an inner cavity with an upward opening, the inner support cover is arranged at the upper part of the iron cup and forms a cavity together with the iron cup for accommodating the contact part, the push rod part and the magnetic circuit part of the relay; the coil rack is arranged at the bottom of the iron cup; the shell is provided with an inner cavity with an upward opening, the inner support cover and the iron cup are arranged in the inner cavity of the shell together, the sealing colloid layer covers the inner support cover and the iron cup, and the edge of the sealing colloid layer is in contact with the wall of the inner cavity of the shell; the method is characterized in that: the circuit board is arranged above the sealing colloid layer, the coil frame is provided with a long strip sheet type coil leading-out piece, the upper end of the coil leading-out piece penetrates through the inner support cover to be fixed with the circuit board in a welding mode and realize electric connection, and the sealing colloid layer is coated on one section of the coil leading-out piece between the inner support cover and the circuit board.

2. The sealed high-voltage direct-current relay with the circuit board according to claim 1, characterized in that: the coil rack is provided with a socket in an upward protruding way, and the lower end of the coil leading-out piece is inserted into the socket of the coil rack and connected with the enameled wire wound by the coil rack.

3. The sealed high-voltage direct-current relay with the circuit board according to claim 1, characterized in that: one section of the coil leading-out piece is also provided with an opening penetrating through the thickness direction of the strip thin sheet.

4. The sealed high-voltage direct-current relay with the circuit board according to claim 1, 2 or 3, characterized in that: furthermore, the installation structure also comprises an installation support, wherein the installation support is positioned on the sealing colloid layer and is fixed with the inner cavity wall of the shell in an interference fit manner, and the circuit board is arranged on the installation support.

5. The sealed high-voltage direct-current relay with the circuit board according to claim 1, characterized in that: the inner support cover is embedded in the upper part of the inner cavity of the iron cup and is in interference fit with the wall of the inner cavity of the iron cup.

6. The sealed high-voltage direct-current relay with the circuit board according to claim 1, characterized in that: the periphery of the top end of the inner support cover is provided with a border part protruding towards the horizontal direction, the side wall of the inner support cover is embedded into the iron cup and is in interference fit with the iron cup, and the border part of the inner support cover is lapped on the top end face of the opening part of the iron cup.

7. The sealed high-voltage direct-current relay with the circuit board according to claim 6, characterized in that: the inner side wall of the upper part of the shell is provided with a dispensing groove extending from top to bottom, and the sealing colloid layer covers the outer side edge of the contact part of the edge part of the inner support cover and the top end face of the opening part of the iron cup from the side.

Technical Field

The invention relates to the technical field of relays, in particular to a sealed high-voltage direct-current relay with a circuit board.

Background

A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is commonly used in automatic control circuits, and which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a sealed high-voltage direct-current relay with a circuit board, which can overcome the defects caused by the fact that the circuit board is arranged in a shell cavity sealed by a colloid layer in the prior art through structural improvement.

The technical scheme adopted by the invention for solving the technical problems is as follows: a sealed high-voltage direct-current relay with a circuit board comprises a stationary contact leading-out end, an inner support cover, an iron cup, a coil frame, a shell, the circuit board and a sealing colloid layer; the inner support cover is provided with an inner cavity with a downward opening, and the two stationary contact leading-out ends are respectively arranged at the top of the inner support cover and extend the bottom end into the inner cavity of the inner support cover; the iron cup is provided with an inner cavity with an upward opening, the inner support cover is arranged at the upper part of the iron cup and forms a cavity together with the iron cup for accommodating the contact part, the push rod part and the magnetic circuit part of the relay; the coil rack is arranged at the bottom of the iron cup; the shell is provided with an inner cavity with an upward opening, the inner support cover and the iron cup are arranged in the inner cavity of the shell together, the sealing colloid layer covers the inner support cover and the iron cup, and the edge of the sealing colloid layer is in contact with the wall of the inner cavity of the shell; the circuit board is arranged above the sealing colloid layer, the coil frame is provided with a long strip sheet type coil leading-out piece, the upper end of the coil leading-out piece penetrates through the inner support cover to be fixed with the circuit board in a welding mode and realize electric connection, and the sealing colloid layer is coated on one section of the coil leading-out piece between the inner support cover and the circuit board.

The coil rack is provided with a socket in an upward protruding way, and the lower end of the coil leading-out piece is inserted into the socket of the coil rack and connected with the enameled wire wound by the coil rack.

One section of the coil leading-out piece is also provided with an opening penetrating through the thickness direction of the strip thin sheet.

Furthermore, the installation structure also comprises an installation support, wherein the installation support is positioned on the sealing colloid layer and is fixed with the inner cavity wall of the shell, and the circuit board is arranged on the installation support.

The inner support cover is embedded in the upper part of the inner cavity of the iron cup and is in interference fit with the wall of the inner cavity of the iron cup.

The periphery of the top end of the inner support cover is provided with a border part protruding towards the horizontal direction, the side wall of the inner support cover is embedded into the iron cup and is in interference fit with the iron cup, and the border part of the inner support cover is lapped on the top end face of the opening part of the iron cup.

The inner side wall of the upper part of the shell is provided with a dispensing groove extending from top to bottom, and the sealing colloid layer covers the outer side edge of the contact part of the edge part of the inner support cover and the top end face of the opening part of the iron cup from the side.

Compared with the prior art, the invention has the beneficial effects that:

1. the circuit board is arranged above the sealing colloid layer, the coil frame is provided with the long-strip thin-sheet-shaped coil leading-out piece, the upper end of the coil leading-out piece penetrates through the inner support cover to be welded and fixed with the circuit board and realize electric connection, and the sealing colloid layer is coated on one section of the coil leading-out piece between the inner support cover and the circuit board. The structure of the invention can avoid the defects caused by the installation of the circuit board in the shell cavity sealed by the colloid layer in the prior art, and is convenient to maintain or replace when the circuit board breaks down, and the colloid layer can not be damaged during maintenance or replacement; secondly, heat generated by the electrical components of the circuit board during working can be dissipated outwards; and thirdly, because the glue is firstly dispensed to form the glue layer and then the circuit board is installed, the risk of damaging the circuit board due to the shrinkage of the glue does not exist in the drying process of the glue.

2. According to the invention, the opening penetrating through the thickness direction of the strip sheet type is further arranged in one section of the coil leading-out piece coated by the sealing colloid layer, so that on one hand, the bonding strength of the coil leading-out piece and the sealing colloid layer can be enhanced, on the other hand, the heat conduction volume of the coil leading-out piece and the sealing colloid layer is reduced, and when the coil leading-out piece is welded with a circuit board, the risk of cracking of the sealing colloid layer caused by local overheating can be reduced.

The invention is further explained in detail with the accompanying drawings and the embodiments; however, the sealed high-voltage direct-current relay with a circuit board according to the present invention is not limited to the embodiment.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a structural cross-sectional view of an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

FIG. 4 is an enlarged schematic view of section B of FIG. 2;

fig. 5 is a schematic configuration diagram of a coil drawing sheet of an embodiment of the present invention.

Detailed Description