Contactor

Abstract

The utility model discloses a contactor, which comprises an outer insulating shell with a top opening; the insulating top cover is used for sealing and covering the top opening of the outer insulating shell; the inner insulating shell is arranged in the outer insulating shell and is used for limiting an arc extinguish chamber; the moving contact is movably arranged in the arc extinguish chamber; the first static contact is fixed to the inner insulating shell; and the second static contact is fixed to the inner insulating shell. One end of the first static contact and one end of the second static contact extend into the arc extinguish chamber and are used for being electrically contacted with the moving contact; at least one of the first static contact and the second static contact is provided with a flat welding end extending out of the insulating top cover, and the flat welding end is used for being welded to a circuit board so as to be electrically connected with the circuit board. The contactor provided by the utility model is suitable for being directly welded on a circuit board, is beneficial to saving the installation time of a customer, improves the installation efficiency, and can reduce the installation space of the contactor.

Description

TECHNICAL FIELD

[0001] The utility model relates to a contactor, especially a contactor suitable for being welded to a circuit board. BACKGROUND

[0002] In the prior art, direct current contactors play a crucial role in new energy vehicles and their charging equipment. They are widely used in charging piles and electric vehicles, ensuring the safe transmission of current and the stable operation of the system. In the application of charging piles, direct current contactors are installed on the direct current output side of direct current charging piles, charging stations or the output side of vehicle-mounted charging machines. When the contactor is closed, it is responsible for connecting the charging pile with the vehicle to realize the transmission of electric energy; when it is opened, it isolates the connection between the charging pile and the outside, providing safety protection. In the application of electric vehicles, direct current contactors are usually configured between the battery system and the inverter. When the system is running, it connects the power supply end and the load end, ensuring smooth transmission of current; when the system stops running or fails, it can quickly break the circuit, safely separating the energy storage system from the vehicle electrical system. In addition, in other auxiliary circuits of electric vehicles, direct current contactors also serve as important electrical control devices. In the prior art, the coil and the auxiliary contact generally use wires or connectors as the lead end, and the main contact generally uses internal threads or external studs as the lead end. Therefore, the existing contactors are not suitable for being directly welded to the circuit board and need to be connected to the circuit board through adapter terminals or adapter connectors, which increases the manufacturing cost of the contactor, reduces the installation efficiency of the contactor, and increases the installation space of the contactor. SUMMARY

[0003] The utility model aims to solve at least one aspect of the above-mentioned problems and defects existing in the prior art.

[0004] According to one aspect of the utility model, a contactor is provided. The contactor includes: an outer insulating shell having a top opening; an insulating top cover covering the top opening of the outer insulating shell; an inner insulating shell arranged in the outer insulating shell for defining an arc-extinguishing chamber; a movable contact movably arranged in the arc-extinguishing chamber; a first stationary contact fixed to the inner insulating shell; and a second stationary contact fixed to the inner insulating shell. One end of the first stationary contact and the second stationary contact extends into the arc-extinguishing chamber for electrical contact with the movable contact; at least one of the first stationary contact and the second stationary contact has a flat welding end extending from the insulating top cover, which is used for welding to a circuit board to electrically connect with the circuit board.

[0005] According to one exemplary embodiment of the present application, the first stationary contact includes: a terminal body, which is columnar and fixed to the inner insulating shell; and a connecting terminal, which is L-shaped and includes a horizontal plate and a vertical plate connected perpendicularly. A lower end of the terminal body extends into the arc extinguishing chamber for electrical contact with the movable contact, and a top of the terminal body is located outside the inner insulating shell. The horizontal plate of the connecting terminal is fixed to the top of the terminal body, and the vertical plate of the connecting terminal extends out of the insulating top cover and serves as a flat welding end for welding to the circuit board.

[0006] According to another exemplary embodiment of the present application, a threaded hole is formed in the top of the terminal body, and a connecting hole corresponding to the threaded hole is formed in the horizontal plate of the connecting terminal. The first stationary contact further includes: a bolt, which passes through the connecting hole in the horizontal plate of the connecting terminal and is threadedly connected into the threaded hole of the terminal body, so as to fasten the connecting terminal to the top of the terminal body.

[0007] According to another exemplary embodiment of the present application, the first stationary contact further includes: a lock washer, which is clamped between an operating head of the bolt and the horizontal plate of the connecting terminal, for preventing loosening of the bolt.

[0008] According to another exemplary embodiment of the present application, a riveting hole is formed in the horizontal plate of the connecting terminal, and a riveting column is formed on the top of the terminal body. The riveting column is riveted into the riveting hole, so as to rivet the connecting terminal to the top of the terminal body.

[0009] According to another exemplary embodiment of the present application, the horizontal plate of the connecting terminal is welded to the top of the terminal body, so as to fix the connecting terminal to the top of the terminal body.

[0010] According to another exemplary embodiment of the present application, the terminal body is an integral machining member, and the connecting terminal is an integral stamping member.

[0011] According to another exemplary embodiment of the present application, the second stationary contact includes: a columnar terminal, which is fixed to the inner insulating shell. A lower end of the columnar terminal extends into the arc extinguishing chamber for electrical contact with the movable contact, and an upper end of the columnar terminal extends out of the insulating top cover for electrical connection to the circuit board or busbar.

[0012] According to another exemplary embodiment of the present application, a threaded connecting hole adapted to connect with a threaded fastener is formed in the top of the columnar terminal, so that the columnar terminal can be fastened to the circuit board or busbar by the threaded fastener.

[0013] According to another exemplary embodiment of the present application, the inner insulating shell is a ceramic piece, and the terminal body and the cylindrical terminal are welded to the inner insulating shell by a brazing process.

[0014] According to another exemplary embodiment of the present application, the cylindrical terminal is an integral machined piece.

[0015] According to another exemplary embodiment of the present application, the second stationary contact is identical to the first stationary contact, such that the first and second stationary contacts can be used interchangeably.

[0016] According to another exemplary embodiment of the present application, the first stationary contact includes a first stationary terminal fixed to the inner insulating shell, a lower end of the first stationary terminal extending into the arc chamber for electrical contact with the movable contact, a top of the first stationary terminal being located outside the inner insulating shell, the first stationary terminal having a first flat upper end extending from the insulating top cover for use as a flat soldering end to be soldered to the circuit board.

[0017] According to another exemplary embodiment of the present application, the second stationary contact includes a second stationary terminal fixed to the inner insulating shell, a lower end of the second stationary terminal extending into the arc chamber for electrical contact with the movable contact, a top of the second stationary terminal being located outside the inner insulating shell, the second stationary terminal having a second flat upper end extending from the insulating top cover for soldering to the circuit board.

[0018] According to another exemplary embodiment of the present application, the first and second stationary terminals are integral machined terminals, respectively.

[0019] According to another exemplary embodiment of the present application, the second stationary contact is identical to the first stationary contact, such that the first and second stationary contacts can be used interchangeably.

[0020] According to another exemplary embodiment of the present application, the contactor further includes a pair of auxiliary contacts disposed in the arc chamber for detecting whether the movable contact has been moved to a closed position in electrical contact with the first and second stationary contacts, and a pair of auxiliary terminals fixed to the insulating top cover and electrically connected to the pair of auxiliary contacts, respectively, the auxiliary terminals being flat and extending from the insulating top cover for soldering to the circuit board.

[0021] According to another exemplary embodiment of the present application, the auxiliary contact has a lead end extending out of the inner insulating shell, and the auxiliary terminal is electrically connected to the lead end of the auxiliary contact via a wire to be electrically connected to the auxiliary contact.

[0022] According to another exemplary embodiment of the present application, the contactor further comprises a magnetic conducting cylinder arranged in the outer insulating shell below the inner insulating shell, and a coil assembly arranged in the magnetic conducting cylinder and comprising a coil former and a coil wound on the coil former, two wire ends of the coil extending through the inner insulating shell and out of the insulating top cover for being soldered to the circuit board.

[0023] According to another exemplary embodiment of the present application, the contactor further comprises a plurality of mounting terminals fixed to the outer side of the peripheral wall of the top of the outer insulating shell, the mounting terminals being flat for being soldered to the circuit board to fix the outer insulating shell to the circuit board.

[0024] According to another exemplary embodiment of the present application, a plurality of connecting lugs are formed on the outer side of the peripheral wall of the top of the outer insulating shell, and the plurality of mounting terminals are fixed to the plurality of connecting lugs respectively, and the outer insulating shell is injection molded on the plurality of mounting terminals so that the outer insulating shell and the plurality of mounting terminals are integrated.

[0025] According to another exemplary embodiment of the present application, a plurality of connecting lugs are formed on the outer side of the peripheral wall of the top of the outer insulating shell, and through holes allowing threaded fasteners to pass through are formed on the connecting lugs so that the outer insulating shell can be fastened to the circuit board by the threaded fasteners.

[0026] In the foregoing exemplary embodiments of the present application, the stationary contact of the contactor is adapted to be directly soldered to the circuit board, which is advantageous for saving customer installation time, improving installation efficiency, and reducing installation space of the contactor.

[0027] Other objects and advantages of the present application will be more clearly understood from the following description taken in conjunction with the accompanying drawings, in which: BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 Fig. 1 shows a perspective view of a contactor according to an exemplary first embodiment of the present application;

[0029] Figure 2 Fig. 2 shows a longitudinal sectional view of the contactor according to the exemplary first embodiment of the present application;

[0030] Figure 3shows a perspective view of a contactor according to an exemplary first embodiment of the present application, with the outer insulating shell and the insulating top cover removed;

[0031] Figure 4 shows an exploded view of a contactor according to an exemplary first embodiment of the present application, with the outer insulating shell and the insulating top cover removed;

[0032] Figure 5 shows a cross-sectional view of a first stationary contact of a contactor according to an exemplary first embodiment of the present application;

[0033] Figure 6 shows an exploded view of a first stationary contact of a contactor according to an exemplary first embodiment of the present application;

[0034] Figure 7 shows a perspective view of a contactor according to an exemplary second embodiment of the present application;

[0035] Figure 8 shows a longitudinal cross-sectional view of a contactor according to an exemplary second embodiment of the present application;

[0036] Figure 9 shows a perspective view of a contactor according to an exemplary second embodiment of the present application, with the outer insulating shell and the insulating top cover removed;

[0037] Figure 10 shows an exploded view of a contactor according to an exemplary second embodiment of the present application, with the outer insulating shell and the insulating top cover removed;

[0038] Figure 11 shows a cross-sectional view of a first stationary contact of a contactor according to an exemplary second embodiment of the present application;

[0039] Figure 12 shows an exploded view of a first stationary contact of a contactor according to an exemplary second embodiment of the present application;

[0040] Figure 13 shows a perspective view of a contactor according to an exemplary third embodiment of the present application;

[0041] Figure 14 shows a longitudinal cross-sectional view of a contactor according to an exemplary third embodiment of the present application;

[0042] Figure 15 shows a perspective view of a contactor according to an exemplary third embodiment of the present application, with the outer insulating shell and the insulating top cover removed;

[0043] Figure 16 An exploded schematic diagram showing a contactor according to an exemplary third embodiment of the present invention, wherein the outer insulating shell and the insulating top cover are removed;

[0044] Figure 17 A cross-sectional view showing a first stationary contact of a contactor according to an exemplary third embodiment of the present utility model;

[0045] Figure 18 A perspective schematic diagram showing a contactor according to an exemplary fourth embodiment of the present utility model;

[0046] Figure 19 A longitudinal sectional view showing a contactor according to an exemplary fourth embodiment of the present invention;

[0047] Figure 20 A perspective schematic diagram showing a contactor according to an exemplary fourth embodiment of the present invention, wherein the outer insulating shell and the insulating top cover are removed;

[0048] Figure 21 An exploded schematic diagram showing a contactor according to an exemplary fourth embodiment of the present invention, wherein the outer insulating shell and the insulating top cover are removed;

[0049] Figure 22 A cross-sectional view showing a first stationary contact of a contactor according to an exemplary fourth embodiment of the present invention. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be further described in detail below through examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall concept of the present invention and should not be construed as limiting the present invention.

[0051] In addition, in the following detailed description, for ease of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments can be practiced without these specific details. In other cases, well-known structures and devices are shown in diagrammatic form to simplify the accompanying drawings.

[0052] According to one general inventive concept, a contactor is provided. The contactor includes: an outer insulating shell having a top opening; an insulating top cover capping the top opening of the outer insulating shell; an inner insulating shell disposed in the outer insulating shell for defining an arc chamber; a movable contact movably disposed in the arc chamber; a first stationary contact fixed to the inner insulating shell; and a second stationary contact fixed to the inner insulating shell. One end of the first stationary contact and the second stationary contact extends into the arc chamber for electrically contacting the movable contact; at least one of the first stationary contact and the second stationary contact has a flat solder end extending from the insulating top cover, the flat solder end being for soldering to a circuit board for electrically connecting with the circuit board.

[0053] First embodiment

[0054] Figures 1 to 6 A first embodiment according to the present application is shown. In this embodiment, Figure 1 A perspective view of a contactor according to an exemplary first embodiment of the present application is shown; Figure 2 A longitudinal cross-sectional view of a contactor according to an exemplary first embodiment of the present application is shown; Figure 3 A perspective view of a contactor according to an exemplary first embodiment of the present application is shown, wherein the outer insulating shell 60 and the insulating top cover 61 are removed; Figure 4 An exploded view of a contactor according to an exemplary first embodiment of the present application is shown, wherein the outer insulating shell 60 and the insulating top cover 61 are removed; Figure 5 A cross-sectional view of the first stationary contact 1 of a contactor according to an exemplary first embodiment of the present application is shown; Figure 6 An exploded view of the first stationary contact 1 of a contactor according to an exemplary first embodiment of the present application is shown.

[0055] As Figures 1 to 6As shown in the utility model of one exemplary embodiment, a contactor is disclosed. The contactor comprises an outer insulating shell 60, an insulating top cover 61, an inner insulating shell 7, a movable contact 3, a first stationary contact 1 and a second stationary contact 2. The outer insulating shell 60 has a top opening. The insulating top cover 61 covers the top opening of the outer insulating shell 60. The inner insulating shell 7 is disposed in the outer insulating shell 60 for defining an arc-extinguishing chamber 70. The movable contact 3 is movably disposed in the arc-extinguishing chamber 70. The first stationary contact 1 is fixed to the inner insulating shell 7. The second stationary contact 2 is fixed to the inner insulating shell 7. One end of the first stationary contact 1 and the second stationary contact 2 extends into the arc-extinguishing chamber 70 for electrically contacting the movable contact 3. At least one of the first stationary contact 1 and the second stationary contact 2 has a flat soldering end 1a extending from the insulating top cover 61, which is used for soldering to a circuit board (not shown) for electrically connecting with the circuit board. For example, a slot corresponding to the flat soldering end 1a is formed on the circuit board, and the flat soldering end 1a can be inserted into the slot on the circuit board and soldered to the circuit board.

[0056] As Figures 1 to 6 shown in the illustrated embodiment, the first stationary contact 1 comprises a terminal body 10 and a connecting terminal 11. The terminal body 10 is columnar and fixed to the inner insulating shell 7. The connecting terminal 11 is L-shaped, and the connecting terminal 11 comprises a horizontal plate 111 and a vertical plate 112 connected perpendicularly. The lower end of the terminal body 10 extends into the arc-extinguishing chamber 70 for electrically contacting the movable contact 3, and the top of the terminal body 10 is located outside the inner insulating shell 7. The horizontal plate 111 of the connecting terminal 11 is fixed to the top of the terminal body 10, and the vertical plate 112 of the connecting terminal 11 extends from the insulating top cover 61 to serve as the flat soldering end 1a soldered to the circuit board.

[0057] As Figures 1 to 6 shown in the illustrated embodiment, a threaded hole 10c is formed on the top of the terminal body 10, and a connecting hole 11c corresponding to the threaded hole 10c is formed on the horizontal plate 111 of the connecting terminal 11. The first stationary contact 1 further comprises a bolt 12 passing through the connecting hole 11c on the horizontal plate 111 of the connecting terminal 11 and threadedly connected into the threaded hole 10c of the terminal body 10 to fasten the connecting terminal 11 to the top of the terminal body 10.

[0058] As Figures 1 to 6 shown in the illustrated embodiment, the first stationary contact 1 further comprises a lock washer 13 clamped between the operating head 121 of the bolt 12 and the horizontal plate 111 of the connecting terminal 11 for preventing the bolt 12 from loosening.

[0059] As Figures 1 to 6 shown in the illustrated embodiment, the terminal body 10 is an integral machining member, and the connecting terminal 11 is an integral stamping member.

[0060] As Figures 1 to 6 shown in the illustrated embodiment, the second stationary contact 2 includes a post terminal 20 fixed to the inner insulating shell 7. A lower end of the post terminal 20 extends into the arc chamber 70 for electrical contact with the movable contact 3, and an upper end of the post terminal 20 extends out of the insulating top cover 61 for electrical connection to a circuit board or bus bar (not shown, e.g., a copper bar).

[0061] As Figures 1 to 6 shown in the illustrated embodiment, a threaded connection hole 2a adapted for connection with a threaded fastener (not shown, e.g., a bolt) is formed on a top of the post terminal 20, so that the post terminal 20 can be fastened to the circuit board or bus bar by the threaded fastener.

[0062] As Figures 1 to 6 shown in the illustrated embodiment, the inner insulating shell 7 is typically a ceramic piece, and the terminal body 10 and the post terminal 20 are typically soldered to the inner insulating shell 7 using a soldering process.

[0063] As Figures 1 to 6 shown in the illustrated embodiment, the post terminal 20 is a one-piece machined piece.

[0064] However, it is noted that the second stationary contact 2 of the present application is not limited to the illustrated embodiment, for example, in another exemplary embodiment of the present application, the second stationary contact 2 can be identical to the first stationary contact 1, so that the first stationary contact 1 and the second stationary contact 2 can be used interchangeably.

[0065] As Figures 1 to 6 shown in the illustrated embodiment, the contactor further includes a pair of auxiliary contacts (not shown) and a pair of auxiliary terminals 4. The pair of auxiliary contacts are disposed in the arc chamber 70 for detecting whether the movable contact 3 has been moved to a closed position in electrical contact with the first and second stationary contacts 1, 2. The pair of auxiliary terminals 4 are fixed to the insulating top cover 61 and are respectively electrically connected to the pair of auxiliary contacts. The auxiliary terminals 4 are flat and extend out of the insulating top cover 61 for soldering to a circuit board.

[0066] As Figures 1 to 6 shown in the illustrated embodiment, the auxiliary contacts have lead ends 41 extending out of the inner insulating shell 7, and the auxiliary terminals 4 are electrically connected to the lead ends 41 of the auxiliary contacts via wires 42 for electrical connection with the auxiliary contacts.

[0067] As Figures 1 to 6As shown in the illustrated embodiment, the contactor further includes a magnetic conducting cylinder 8 and a coil assembly. The magnetic conducting cylinder 8 is disposed in the outer insulating shell 60 and below the inner insulating shell 7. The coil assembly is disposed in the magnetic conducting cylinder 8 and includes a coil former 51 and a coil 50 wound on the coil former 51. Two wire ends 5 of the coil 50 pass through the inner insulating shell 7 and extend out of the insulating top cover 61 for soldering to a circuit board.

[0068] As shown in the illustrated embodiment, the contactor further includes a plurality of mounting terminals 63 fixed to the outer side of the peripheral wall of the top of the outer insulating shell 60. The mounting terminals 63 are flat for soldering to a circuit board to fix the outer insulating shell 60 to the circuit board. Figures 1 to 6

[0069] As shown in the illustrated embodiment, a plurality of connecting lugs 62 are formed on the outer side of the peripheral wall of the top of the outer insulating shell 60, and the plurality of mounting terminals 63 are fixed to the plurality of connecting lugs 62, respectively. The outer insulating shell 60 is injection molded onto the plurality of mounting terminals 63 so that the outer insulating shell 60 and the plurality of mounting terminals 63 are integrated. Figures 1 to 6

[0070] However, the present application is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present application, a plurality of connecting lugs 62 are formed on the outer side of the peripheral wall of the top of the outer insulating shell 60, and through holes are formed in the connecting lugs 62 to allow threaded fasteners to pass through, so that the outer insulating shell 60 can be fastened to a circuit board by the threaded fasteners.

[0071] Second embodiment

[0072] Figures 7 to 12 A second embodiment according to the present application is shown. In this embodiment, Figure 7 A perspective view of a contactor according to an exemplary second embodiment of the present application is shown; Figure 8 A longitudinal sectional view of a contactor according to an exemplary second embodiment of the present application is shown; Figure 9 A perspective view of a contactor according to an exemplary second embodiment of the present application is shown, with the outer insulating shell 60 and the insulating top cover 61 removed; Figure 10 An exploded view of a contactor according to an exemplary second embodiment of the present application is shown, with the outer insulating shell 60 and the insulating top cover 61 removed; Figure 11 A sectional view of a first stationary contact 1 of a contactor according to an exemplary second embodiment of the present application is shown; Figure 12 An exploded view of a first stationary contact 1 of a contactor according to an exemplary second embodiment of the present application is shown.

[0073] As​​Figures 7 to 12 As shown, in an exemplary embodiment of the present invention, a contactor is disclosed. The contactor includes: an outer insulating shell 60, an insulating top cover 61, an inner insulating shell 7, a moving contact 3, a first static contact 1 and a second static contact 2. The outer insulating shell 60 has a top opening. The insulating top cover 61 covers the top opening of the outer insulating shell 60. The inner insulating shell 7 is arranged in the outer insulating shell 60 to define an arc extinguishing chamber 70. The moving contact 3 is movably arranged in the arc extinguishing chamber 70. The first static contact 1 is fixed to the inner insulating shell 7. The second static contact 2 is fixed to the inner insulating shell 7. One end of the first static contact 1 and the second static contact 2 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3. At least one of the first static contact 1 and the second static contact 2 has a flat welding end 1a extending from the insulating top cover 61, and the flat welding end 1a is used to be welded to a circuit board (not shown) to be electrically connected to the circuit board. For example, a slot for the flat soldering terminal 1 a is formed on the circuit board, and the flat soldering terminal 1 a can be inserted into the slot on the circuit board and soldered to the circuit board.

[0074] like Figures 7 to 12 As shown, in the illustrated embodiment, the first static contact 1 includes: a terminal body 10 and a connecting terminal 11. The terminal body 10 is columnar and is fixed to the inner insulating shell 7. The connecting terminal 11 is L-shaped, and the connecting terminal 11 includes a horizontal plate 111 and a vertical plate 112 vertically connected. The lower end of the terminal body 10 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3, and the top of the terminal body 10 is located outside the inner insulating shell 7. The horizontal plate 111 of the connecting terminal 11 is fixed to the top of the terminal body 10, and the vertical plate 112 of the connecting terminal 11 extends from the insulating top cover 61 and serves as a flat welding end 1a for welding to the circuit board.

[0075] like Figures 7 to 12 As shown, in the illustrated embodiment, a rivet hole 11a is formed on the horizontal plate 111 of the connecting terminal 11, and a rivet column 10a is formed on the top of the terminal body 10, and the rivet column 10a is riveted into the rivet hole 11a to rivet the connecting terminal 11 to the top of the terminal body 10.

[0076] like Figures 7 to 12 As shown, in the illustrated embodiment, the terminal body 10 is an integral machined part, and the connecting terminal 11 is an integral stamped part.

[0077] like Figures 7 to 12 As shown, in the illustrated embodiment, the second static contact 2 includes a columnar terminal 20, which is fixed to the inner insulating shell 7. The lower end of the columnar terminal 20 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3, and the upper end of the columnar terminal 20 extends from the insulating top cover 61 for electrical connection to a circuit board or a busbar (not shown, for example, a copper busbar).

[0078] As Figures 7 to 12 shown, in the illustrated embodiment, a threaded connection hole 2a adapted to be connected with a threaded fastener (not shown, for example, a bolt) is formed on the top of the columnar terminal 20, so that the columnar terminal 20 can be fastened to a circuit board or a bus bar by the threaded fastener.

[0079] As Figures 7 to 12 shown, in the illustrated embodiment, the inner insulating shell 7 is generally a ceramic piece, and the terminal body 10 and the columnar terminal 20 are generally welded to the inner insulating shell 7 by a brazing process.

[0080] As Figures 7 to 12 shown, in the illustrated embodiment, the columnar terminal 20 is an integral machined piece.

[0081] However, please note that the second stationary contact 2 of the utility model is not limited to the illustrated embodiment, for example, in another exemplary embodiment of the utility model, the second stationary contact 2 can be exactly the same as the first stationary contact 1, so that the first stationary contact 1 and the second stationary contact 2 can be used interchangeably.

[0082] As Figures 7 to 12 shown, in the illustrated embodiment, the contactor further comprises a pair of auxiliary contacts (not shown) and a pair of auxiliary terminals 4. The pair of auxiliary contacts are arranged in the arc extinguishing chamber 70 and are used to detect whether the movable contact 3 has been moved to a closed position in electrical contact with the first and second stationary contacts 1, 2. The pair of auxiliary terminals 4 are fixed to the insulating top cover 61 and are respectively electrically connected to the pair of auxiliary contacts. The auxiliary terminals 4 are flat and extend from the insulating top cover 61 and are used to be welded to a circuit board.

[0083] As Figures 7 to 12 shown, in the illustrated embodiment, the auxiliary contacts have lead ends 41 extending from the inner insulating shell 7, and the auxiliary terminals 4 are electrically connected to the lead ends 41 of the auxiliary contacts via wires 42 to be electrically connected with the auxiliary contacts.

[0084] As Figures 7 to 12 shown, in the illustrated embodiment, the contactor further comprises a magnetic conducting cylinder 8 and a coil assembly. The magnetic conducting cylinder 8 is arranged in the outer insulating shell 60 and is located below the inner insulating shell 7. The coil assembly is arranged in the magnetic conducting cylinder 8 and comprises a coil skeleton 51 and a coil 50 wound on the coil skeleton 51. Two wire ends 5 of the coil 50 pass through the inner insulating shell 7 and extend from the insulating top cover 61 and are used to be welded to a circuit board.

[0085] As Figures 7 to 12 shown, in the illustrated embodiment, the contactor further comprises a plurality of mounting terminals 63 fixed to the outer side of the peripheral wall of the top of the outer insulating shell 60. The mounting terminals 63 are flat and are used to be welded to a circuit board to fix the outer insulating shell 60 to the circuit board.

[0086] As Third embodiment shown in the illustrated embodiment, a plurality of connecting lugs 62 are formed on the outside of the peripheral wall of the top portion of the outer insulating shell 60, and a plurality of mounting terminals 63 are fixed to the plurality of connecting lugs 62, respectively. The outer insulating shell 60 is injection molded onto the plurality of mounting terminals 63, so that the outer insulating shell 60 and the plurality of mounting terminals 63 become an integral piece.

[0087] However, the present application is not limited to the illustrated embodiment, for example, in another exemplary embodiment of the present application, a plurality of connecting lugs 62 are formed on the outside of the peripheral wall of the top portion of the outer insulating shell 60, and a through hole is formed on the connecting lug 62 to allow a threaded fastener to pass through, so that the outer insulating shell 60 can be fastened to the circuit board by the threaded fastener.

[0088] Figures 13 to 17

[0089] Figure 13 shows a perspective view of a contactor according to a third embodiment of the present application. In this figure, Figure 14 shows a perspective view of a contactor according to a third embodiment of the present application; Figure 15 shows a longitudinal sectional view of a contactor according to a third embodiment of the present application; Figure 16 shows a perspective view of a contactor according to a third embodiment of the present application, wherein the outer insulating shell 60 and the insulating top cover 61 are removed; Figure 17 shows an exploded view of a contactor according to a third embodiment of the present application, wherein the outer insulating shell 60 and the insulating top cover 61 are removed; Figures 13 to 17 shows a sectional view of the first stationary contact 1 of a contactor according to a third embodiment of the present application.

[0090] As Figures 13 to 17As shown, in an exemplary embodiment of the present invention, a contactor is disclosed. The contactor includes: an outer insulating shell 60, an insulating top cover 61, an inner insulating shell 7, a moving contact 3, a first static contact 1 and a second static contact 2. The outer insulating shell 60 has a top opening. The insulating top cover 61 covers the top opening of the outer insulating shell 60. The inner insulating shell 7 is arranged in the outer insulating shell 60 to define an arc extinguishing chamber 70. The moving contact 3 is movably arranged in the arc extinguishing chamber 70. The first static contact 1 is fixed to the inner insulating shell 7. The second static contact 2 is fixed to the inner insulating shell 7. One end of the first static contact 1 and the second static contact 2 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3. At least one of the first static contact 1 and the second static contact 2 has a flat welding end 1a extending from the insulating top cover 61, and the flat welding end 1a is used to be welded to a circuit board (not shown) to be electrically connected to the circuit board. For example, a slot for the flat soldering terminal 1 a is formed on the circuit board, and the flat soldering terminal 1 a can be inserted into the slot on the circuit board and soldered to the circuit board.

[0091] like Figures 13 to 17 As shown, in the illustrated embodiment, the first static contact 1 includes: a terminal body 10 and a connecting terminal 11. The terminal body 10 is columnar and is fixed to the inner insulating shell 7. The connecting terminal 11 is L-shaped, and the connecting terminal 11 includes a horizontal plate 111 and a vertical plate 112 vertically connected. The lower end of the terminal body 10 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3, and the top of the terminal body 10 is located outside the inner insulating shell 7. The horizontal plate 111 of the connecting terminal 11 is fixed to the top of the terminal body 10, and the vertical plate 112 of the connecting terminal 11 extends from the insulating top cover 61 and serves as a flat welding end 1a for welding to the circuit board.

[0092] like Figures 13 to 17 As shown, in the illustrated embodiment, the horizontal plate 111 of the connection terminal 11 is welded to the top of the terminal body 10 to fix the connection terminal 11 to the top of the terminal body 10 .

[0093] like Figures 13 to 17 As shown, in the illustrated embodiment, the terminal body 10 is an integral machined part, and the connecting terminal 11 is an integral stamped part.

[0094] like Figures 13 to 17 As shown, in the illustrated embodiment, the second static contact 2 includes a columnar terminal 20, which is fixed to the inner insulating shell 7. The lower end of the columnar terminal 20 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3, and the upper end of the columnar terminal 20 extends from the insulating top cover 61 for electrical connection to a circuit board or a busbar (not shown, for example, a copper busbar).

[0095] like Figures 13 to 17As shown in the illustrated embodiment, a threaded connection hole 2a adapted to be connected with a threaded fastener (not shown, for example, a bolt) is formed on the top of the columnar terminal 20, so that the columnar terminal 20 can be fastened to a circuit board or a bus bar by the threaded fastener.

[0096] As shown in the illustrated embodiment, the inner insulating shell 7 is generally a ceramic piece, and the terminal body 10 and the columnar terminal 20 are generally welded to the inner insulating shell 7 by a brazing process. Figures 13 to 17

[0097] As shown in the illustrated embodiment, the columnar terminal 20 is an integral machined piece. Figures 13 to 17

[0098] However, it should be noted that the second stationary contact 2 of the utility model is not limited to the illustrated embodiment, for example, in another exemplary embodiment of the utility model, the second stationary contact 2 can be completely identical to the first stationary contact 1, so that the first stationary contact 1 and the second stationary contact 2 can be used interchangeably.

[0099] As shown in the illustrated embodiment, the contactor further comprises a pair of auxiliary contacts (not shown) and a pair of auxiliary terminals 4. The pair of auxiliary contacts are arranged in the arc extinguishing chamber 70 and are used to detect whether the movable contact 3 has been moved to a closed position in electrical contact with the first and second stationary contacts 1, 2. The pair of auxiliary terminals 4 are fixed to the insulating top cover 61 and are respectively electrically connected to the pair of auxiliary contacts. The auxiliary terminals 4 are flat and extend from the insulating top cover 61 and are used to be welded to a circuit board. Figures 13 to 17

[0100] As shown in the illustrated embodiment, the auxiliary contacts have lead ends 41 extending from the inner insulating shell 7, and the auxiliary terminals 4 are electrically connected to the lead ends 41 of the auxiliary contacts via wires 42 to be electrically connected with the auxiliary contacts. Figures 13 to 17

[0101] As shown in the illustrated embodiment, the contactor further comprises a magnetic conducting cylinder 8 and a coil assembly. The magnetic conducting cylinder 8 is arranged in the outer insulating shell 60 and is located below the inner insulating shell 7. The coil assembly is arranged in the magnetic conducting cylinder 8 and comprises a coil skeleton 51 and a coil 50 wound on the coil skeleton 51. Two wire ends 5 of the coil 50 pass through the inner insulating shell 7 and extend from the insulating top cover 61 and are used to be welded to a circuit board. Figures 13 to 17

[0102] As shown in the illustrated embodiment, the contactor further comprises a plurality of mounting terminals 63 fixed to the outer side of the peripheral wall of the top of the outer insulating shell 60. The mounting terminals 63 are flat and are used to be welded to a circuit board to fix the outer insulating shell 60 to the circuit board. Fourth embodiment

[0103] ​​​​​​As Figures 18 to 22 In the illustrated embodiment, a plurality of connecting lugs 62 are formed on the outer side of the peripheral wall of the top portion of the outer insulating case 60, and a plurality of mounting terminals 63 are fixed to the plurality of connecting lugs 62, respectively. The outer insulating case 60 is injection molded onto the plurality of mounting terminals 63, so that the outer insulating case 60 and the plurality of mounting terminals 63 become an integral piece.

[0104] However, the present application is not limited to the illustrated embodiment, and for example, in another exemplary embodiment of the present application, a plurality of connecting lugs 62 are formed on the outer side of the peripheral wall of the top portion of the outer insulating case 60, and through holes are formed in the connecting lugs 62 to allow threaded fasteners to pass therethrough, so that the outer insulating case 60 can be fastened to a circuit board by the threaded fasteners.

[0105] Figure 18

[0106] Figure 19 A perspective view of a contactor according to a fourth embodiment of the present application is shown. In this figure, Figure 20 A perspective view of a contactor according to a fourth embodiment of the present application is shown. In this figure, Figure 21 A perspective view of a contactor according to a fourth embodiment of the present application is shown. In this figure, Figure 22 A perspective view of a contactor according to a fourth embodiment of the present application is shown. In this figure, Figures 18 to 22 A perspective view of a contactor according to a fourth embodiment of the present application is shown. In this figure, Figures 18 to 22 A perspective view of a contactor according to a fourth embodiment of the present application is shown. In this figure,

[0107] As Figures 18 to 22As shown, in an exemplary embodiment of the present invention, a contactor is disclosed. The contactor includes: an outer insulating shell 60, an insulating top cover 61, an inner insulating shell 7, a moving contact 3, a first static contact 1 and a second static contact 2. The outer insulating shell 60 has a top opening. The insulating top cover 61 covers the top opening of the outer insulating shell 60. The inner insulating shell 7 is arranged in the outer insulating shell 60 to define an arc extinguishing chamber 70. The moving contact 3 is movably arranged in the arc extinguishing chamber 70. The first static contact 1 is fixed to the inner insulating shell 7. The second static contact 2 is fixed to the inner insulating shell 7. One end of the first static contact 1 and the second static contact 2 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3. At least one of the first static contact 1 and the second static contact 2 has a flat welding end 1a extending from the insulating top cover 61, and the flat welding end 1a is used to be welded to a circuit board (not shown) to be electrically connected to the circuit board. For example, a slot for the flat soldering terminal 1 a is formed on the circuit board, and the flat soldering terminal 1 a can be inserted into the slot on the circuit board and soldered to the circuit board.

[0108] like Figures 18 to 22 As shown, in the illustrated embodiment, the first static contact 1 includes: a terminal body 10 and a connecting terminal 11. The terminal body 10 is columnar and is fixed to the inner insulating shell 7. The connecting terminal 11 is L-shaped, and the connecting terminal 11 includes a horizontal plate 111 and a vertical plate 112 vertically connected. The lower end of the terminal body 10 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3, and the top of the terminal body 10 is located outside the inner insulating shell 7. The horizontal plate 111 of the connecting terminal 11 is fixed to the top of the terminal body 10, and the vertical plate 112 of the connecting terminal 11 extends from the insulating top cover 61 and serves as a flat welding end 1a for welding to the circuit board.

[0109] like Figures 18 to 22 As shown, in the illustrated embodiment, the first static contact 1 includes a first static terminal 100, which is fixed to the inner insulating housing 7. The lower end of the first static terminal 100 extends into the arc extinguishing chamber 70 for electrical contact with the moving contact 3, and the top of the first static terminal 100 is located outside the inner insulating housing 7. The first static terminal 100 has a first flat upper end 110, which extends from the insulating top cover 61 and serves as a flat welding terminal 1a for welding to a circuit board.

[0110] like Figures 18 to 22 As shown, in the illustrated embodiment, the second static contact 2 includes a second static terminal 200. The second static terminal 200 is fixed to the inner insulating housing 7. The lower end of the second static terminal 200 extends into the arc extinguishing chamber 70 for electrical contact with the movable contact 3, and the top of the second static terminal 200 is located outside the inner insulating housing 7. The second static terminal 200 has a second flat upper end 210, which extends from the insulating top cover 61 for soldering to the circuit board.

[0111] like Figures 18 to 22 As shown, in the illustrated embodiment, the first static terminal 100 and the second static terminal 200 are respectively integrally machined terminals. In the illustrated embodiment, the inner insulating shell 7 is typically a ceramic component, and the first static terminal 100 and the second static terminal 200 are typically welded to the inner insulating shell 7 using a brazing process.

[0112] like Figures 18 to 22 As shown, in the illustrated embodiment, the second static contact 2 is identical to the first static contact 1 , so that the first static contact 1 and the second static contact 2 can be used interchangeably.

[0113] like Figures 18 to 22 As shown, in the illustrated embodiment, the contactor further includes a pair of auxiliary contacts (not shown) and a pair of auxiliary terminals 4. The pair of auxiliary contacts is disposed in the arc extinguishing chamber 70 and is used to detect whether the movable contact 3 has moved to the closed position, where it is in electrical contact with the first and second stationary contacts 1 and 2. The pair of auxiliary terminals 4 is secured to the insulating cover 61 and electrically connected to each of the pair of auxiliary contacts. The auxiliary terminals 4 are flat and extend from the insulating cover 61 for soldering to a circuit board.

[0114] like Figures 18 to 22 As shown, in the illustrated embodiment, the auxiliary contact has a lead end 41 extending from the inner insulating shell 7 , and the auxiliary terminal 4 is electrically connected to the lead end 41 of the auxiliary contact via a wire 42 to be electrically connected to the auxiliary contact.

[0115] like ​ As shown, in the illustrated embodiment, the contactor further includes a magnetic cylinder 8 and a coil assembly. The magnetic cylinder 8 is disposed within an outer insulating shell 60 and below an inner insulating shell 7. The coil assembly is disposed within the magnetic cylinder 8 and includes a coil bobbin 51 and a coil 50 wound around the coil bobbin 51. The two terminals 5 of the coil 50 pass through the inner insulating shell 7 and extend from the insulating top cover 61 for soldering to a circuit board.

[0116] like ​ As shown, in the illustrated embodiment, the contactor further includes a plurality of mounting terminals 63, which are fixed to the outer side of the peripheral wall of the top of the outer insulating shell 60. The mounting terminals 63 are flat and are used to be soldered to the circuit board to fix the outer insulating shell 60 to the circuit board.

[0117] like ​ As shown, in the illustrated embodiment, a plurality of connection ears 62 are formed on the outer side of the peripheral wall of the top of the outer insulating shell 60, and a plurality of mounting terminals 63 are respectively fixed to the plurality of connection ears 62. The outer insulating shell 60 is injection molded onto the plurality of mounting terminals 63, so that the outer insulating shell 60 and the plurality of mounting terminals 63 become an integral part.

[0118] However, the utility model is not limited to the illustrated embodiments, for example, in another exemplary embodiment of the utility model, a plurality of connecting ears 62 are formed on the outer side of the peripheral wall of the top of the outer insulation shell 60, and through holes allowing threaded fasteners to pass through are formed on the connecting ears 62, so that the outer insulation shell 60 can be fastened to the circuit board by the threaded fasteners.

[0119] Those skilled in the art can understand that the above-described embodiments are all exemplary, and those skilled in the art can make improvements on them, and the structures described in various embodiments can be freely combined without structural or principle conflicts, and these changes shall fall within the protection scope of the utility model.

[0120] Although the utility model has been described in conjunction with the drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the utility model, and cannot be understood as a limitation of the utility model.

[0121] Although some embodiments of the general concept of the utility model have been shown and described, those skilled in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general concept of the utility model, and the scope of the utility model is limited by the claims and their equivalents.

[0122] It should be noted that the wording "comprising" does not exclude other elements or steps, and the wording "a" or "an" does not exclude a plurality. In addition, any element reference of the claims shall not be understood as limiting the scope of the utility model.

Claims

1. A contactor, characterized in that: include: an outer insulating shell (60) having a top opening; an insulating top cover (61) for covering the top opening of the outer insulating shell (60); An inner insulating shell (7) is disposed in the outer insulating shell (60) and is used to define an arc extinguishing chamber (70); A moving contact (3) movably arranged in the arc extinguishing chamber (70); A first static contact (1) fixed to the inner insulating shell (7); and The second static contact (2) is fixed to the inner insulating shell (7), One end of the first static contact (1) and the second static contact (2) extends into the arc extinguishing chamber (70) for electrical contact with the moving contact (3). At least one of the first static contact (1) and the second static contact (2) has a flat welding end (1a) extending from the insulating top cover (61), and the flat welding end (1a) is used for welding to a circuit board to be electrically connected to the circuit board.

2. The contactor according to claim 1, characterized in that: The first static contact (1) comprises: a terminal body (10) having a columnar shape and fixed to the inner insulating shell (7); and The connecting terminal (11) is L-shaped and includes a horizontal plate (111) and a vertical plate (112) connected vertically. The lower end of the terminal body (10) extends into the arc extinguishing chamber (70) for electrical contact with the moving contact (3), and the top of the terminal body (10) is located outside the inner insulating shell (7). The horizontal plate (111) of the connecting terminal (11) is fixed to the top of the terminal body (10), and the vertical plate (112) of the connecting terminal (11) extends from the insulating top cover (61) and serves as a flat welding end (1a) welded to the circuit board.

3. The contactor according to claim 2, wherein: A threaded hole (10c) is formed on the top of the terminal body (10), and a connecting hole (11c) corresponding to the threaded hole (10c) is formed on the horizontal plate (111) of the connecting terminal (11); The first static contact (1) further comprises: A bolt (12) passes through a connection hole (11c) on a horizontal plate (111) of the connection terminal (11) and is threadedly connected to a threaded hole (10c) of the terminal body (10) to fasten the connection terminal (11) to the top of the terminal body (10).

4. The contactor according to claim 3, characterized in that: The first static contact (1) further comprises: An anti-loosening washer (13) is clamped between the operating head (121) of the bolt (12) and the horizontal plate (111) of the connecting terminal (11) to prevent the bolt (12) from loosening.

5. The contactor according to claim 2, wherein: A rivet hole (11a) is formed on the horizontal plate (111) of the connecting terminal (11), and a rivet column (10a) is formed on the top of the terminal body (10). The rivet column (10a) is riveted into the rivet hole (11a) to rivet the connecting terminal (11) to the top of the terminal body (10).

6. The contactor according to claim 2, characterized in that: The horizontal plate (111) of the connection terminal (11) is welded to the top of the terminal body (10) to fix the connection terminal (11) to the top of the terminal body (10).

7. The contactor according to claim 2, characterized in that: The terminal body (10) is an integral machined part, and the connecting terminal (11) is an integral stamped part.

8. The contactor according to any one of claims 2 to 7, characterized in that: The second static contact (2) comprises: A columnar terminal (20) is fixed to the inner insulating shell (7), The lower end of the columnar terminal (20) extends into the arc extinguishing chamber (70) for electrical contact with the moving contact (3), and the upper end of the columnar terminal (20) extends from the insulating top cover (61) for electrical connection to the circuit board or busbar.

9. The contactor according to claim 8, characterized in that: A threaded connection hole (2a) suitable for connection with a threaded fastener is formed on the top of the column terminal (20), so that the column terminal (20) can be fastened to the circuit board or the busbar through the threaded fastener.

10. The contactor according to claim 8, characterized in that: The inner insulating shell (7) is a ceramic part, and the terminal body (10) and the columnar terminal (20) are welded to the inner insulating shell (7) through a brazing process.

11. The contactor according to claim 8, characterized in that: The columnar terminal (20) is an integral machined part.

12. The contactor according to any one of claims 2 to 7, characterized in that: The second static contact (2) is completely identical to the first static contact (1), so that the first static contact (1) and the second static contact (2) can be used interchangeably.

13. The contactor according to claim 1, wherein: The first static contact (1) comprises: A first static terminal (100) is fixed to the inner insulating shell (7), The lower end of the first static terminal (100) extends into the arc extinguishing chamber (70) for electrical contact with the moving contact (3), and the top of the first static terminal (100) is located outside the inner insulating shell (7). The first static terminal (100) has a first flat upper end (110), which extends from the insulating top cover (61) and serves as a flat welding end (1a) welded to the circuit board.

14. The contactor according to claim 13, characterized in that: The second static contact (2) comprises: A second static terminal (200) is fixed to the inner insulating shell (7), The lower end of the second static terminal (200) extends into the arc extinguishing chamber (70) for electrical contact with the moving contact (3), and the top of the second static terminal (200) is located outside the inner insulating shell (7). The second static terminal (200) has a second flat upper end (210), and the second flat upper end (210) of the second static terminal (200) extends from the insulating top cover (61) and is used for being welded to the circuit board.

15. The contactor according to claim 14, characterized in that: The first static terminal (100) and the second static terminal (200) are respectively one-piece machined terminals.

16. The contactor according to claim 14, characterized in that: The second static contact (2) is completely identical to the first static contact (1), so that the first static contact (1) and the second static contact (2) can be used interchangeably.

17. The contactor according to claim 1, characterized in that Also includes: a pair of auxiliary contacts, disposed in the arc extinguishing chamber (70), for detecting whether the movable contact (3) has been moved to a closed position in electrical contact with the first and second stationary contacts (1, 2); and a pair of auxiliary terminals (4), fixed to the insulating top cover (61) and electrically connected to the pair of auxiliary contacts, The auxiliary terminal (4) is flat and extends out from the insulating top cover (61) and is used for being welded to the circuit board.

18. The contactor according to claim 17, characterized in that: The auxiliary contact has a lead end (41) extending from the inner insulating shell (7), and the auxiliary terminal (4) is electrically connected to the lead end (41) of the auxiliary contact via a wire (42) to be electrically connected to the auxiliary contact.

19. The contactor according to claim 1, wherein: Also includes: A magnetic conductive cylinder (8) is arranged in the outer insulating shell (60) and located below the inner insulating shell (7); and The coil assembly is arranged in the magnetic conductive cylinder (8), and comprises a coil frame (51) and a coil (50) wound on the coil frame (51). The two connection terminals (5) of the coil (50) pass through the inner insulating shell (7) and extend out of the insulating top cover (61) for being soldered to the circuit board.

20. The contactor according to claim 1, wherein: Also includes: A plurality of mounting terminals (63) are fixed to the outer side of the peripheral wall of the top of the outer insulating shell (60), The mounting terminal (63) is flat and is used for being welded to the circuit board to fix the outer insulating shell (60) to the circuit board.

21. The contactor according to claim 20, characterized in that: A plurality of connection ears (62) are formed on the outer side of the peripheral wall of the top of the outer insulating shell (60), and the plurality of mounting terminals (63) are respectively fixed to the plurality of connection ears (62); The outer insulating shell (60) is injection-molded onto the plurality of mounting terminals (63), so that the outer insulating shell (60) and the plurality of mounting terminals (63) become an integral piece.

22. The contactor according to claim 20, characterized in that: A plurality of connection ears (62) are formed on the outer side of the peripheral wall of the top of the outer insulating shell (60), and through holes are formed on the connection ears (62) for allowing threaded fasteners to pass through, so that the outer insulating shell (60) can be fastened to the circuit board by the threaded fasteners.

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