An auxiliary contact structure and a DC contactor

Abstract

This utility model provides an auxiliary contact structure and a DC contactor, relating to the field of contactor technology. The auxiliary contact structure includes a push rod assembly, a main contact group, and an auxiliary contact group. The push rod assembly includes a push rod and a mounting bracket, with the push rod connected to the mounting bracket. The main contact group includes a first moving contact bridge and a second moving contact bridge, both of which are mounted on the mounting bracket and spaced apart. The auxiliary contact group is mounted on the mounting bracket and located on the side of the mounting bracket away from the push rod. This auxiliary contact structure, by arranging the first and second moving contact bridges and the auxiliary contact group on opposite sides of the mounting bracket, improves the installation stability of the auxiliary contact group and accurately reflects the on / off state of the main circuit.

Description

Technical Field

[0001] This utility model relates to the field of contactor technology, and more specifically, to an auxiliary contact structure and a DC contactor. Background Technology

[0002] A DC contactor is a switching device controlled by electromagnetic principles. It is primarily used to connect or disconnect current loads in DC circuits, enabling automatic adjustment, safety assurance, and circuit switching functions within the circuit system. Typically, a DC contactor is equipped with main contacts and auxiliary contacts. The main contacts control the main circuit and are capable of carrying and breaking large currents; the auxiliary contacts are used for signal transmission in the control circuit and to indicate the on / off status of the main circuit, suitable for low-current operating environments.

[0003] In a double-gang DC contactor, the auxiliary contacts need to simultaneously indicate the operating status of two main circuits. However, existing double-gang DC contactors suffer from insufficient installation stability of the auxiliary contacts, which may lead to failure of the auxiliary contact conduction circuit, thus failing to accurately reflect the on / off status of the main circuits. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary contact structure and a DC contactor, which can improve the installation stability of the auxiliary contact and accurately reflect the on / off state of the main circuit.

[0005] The embodiments of this utility model are implemented as follows: In a first aspect, this utility model provides an auxiliary contact structure, comprising: A push rod assembly, the push rod assembly including a push rod and a mounting bracket, the push rod being connected to the mounting bracket; The main contact assembly includes a first moving contact bridge and a second moving contact bridge, both of which are disposed on the mounting bracket and are spaced apart. An auxiliary contact assembly is disposed on the mounting bracket and located on the side of the mounting bracket away from the push rod.

[0006] In an optional embodiment, both the first movable contact bridge and the second movable contact bridge extend along a first direction, and the first movable contact bridge and the second movable contact bridge are spaced apart along a second direction; the auxiliary contact group extends along the second direction and is spaced apart from the first movable contact bridge and the second movable contact bridge along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0007] In an optional embodiment, the auxiliary contact assembly includes an auxiliary bracket and an auxiliary moving spring, the auxiliary bracket being disposed on the mounting bracket and the auxiliary moving spring being disposed on the side of the auxiliary bracket away from the mounting bracket.

[0008] In an optional embodiment, the auxiliary support includes a base plate and a fixing block. The base plate is disposed on the mounting frame, the fixing block is disposed on the side of the base plate away from the mounting frame, and the auxiliary moving spring passes through the fixing block and is spaced apart from the base plate.

[0009] In an optional embodiment, the auxiliary bracket further includes a first side plate and a second side plate, the first side plate and the second side plate being spaced apart from the base plate and both located on the side of the base plate away from the mounting bracket, and the auxiliary moving spring being located between the first side plate and the second side plate.

[0010] In an optional embodiment, the auxiliary contact structure further includes a housing and a yoke plate, the housing being connected to the yoke plate, the push rod passing through the yoke plate, and the mounting bracket being disposed on the yoke plate and located inside the housing; the first moving contact bridge, the second moving contact bridge, the auxiliary bracket, and the auxiliary moving spring are all located inside the housing; The main contact group also includes two first stationary contacts and two second stationary contacts. The two first stationary contacts are both inserted through the housing, and the first moving contact bridge is used to connect and conduct the two first stationary contacts. The two second stationary contacts are both inserted through the housing, and the second moving contact bridge is used to connect and conduct the two second stationary contacts. The auxiliary contact group also includes two auxiliary contacts, both of which are disposed within the housing, and the auxiliary moving spring is used to connect and conduct the two auxiliary contacts.

[0011] In an optional embodiment, the mounting bracket includes a first bracket, a second bracket, and a mounting base, wherein the first bracket and the second bracket are spaced apart from each other on the mounting base, and the push rod is connected to the mounting base; The first movable contact bridge is disposed on the side of the first bracket close to the mounting base, and the second movable contact bridge is disposed on the side of the second bracket close to the mounting base; the auxiliary contact group is disposed on both the first bracket and the second bracket, and is located on the side of the first bracket and the second bracket away from the mounting base.

[0012] In an optional embodiment, the first bracket, the second bracket, and the mounting base are integrally formed.

[0013] In an optional embodiment, the first movable contact bridge is slidably engaged with the first bracket, and the push rod assembly further includes a first elastic element, the two ends of which are respectively connected to the first movable contact bridge and the mounting base; The second movable contact bridge is slidably engaged with the second bracket, and the push rod assembly further includes a second elastic element, the two ends of which are respectively connected to the second movable contact bridge and the mounting base.

[0014] In an optional embodiment, the first bracket includes a first latching portion, a second latching portion, and a first mounting portion, wherein the first latching portion and the second latching portion are spaced apart from each other in the first mounting portion; the second bracket includes a third latching portion, a fourth latching portion, and a second mounting portion, wherein the third latching portion and the fourth latching portion are spaced apart from each other in the second mounting portion. The mounting base has a first slot, a second slot, a third slot, and a fourth slot arranged at intervals. The end of the first engaging portion away from the first mounting portion is disposed in the first slot, the end of the second engaging portion away from the first mounting portion is disposed in the second slot, the end of the third engaging portion away from the second mounting portion is disposed in the third slot, and the end of the fourth engaging portion away from the second mounting portion is disposed in the fourth slot. The first movable contact bridge is disposed on the side of the first mounting portion near the mounting base, and the second movable contact bridge is disposed on the side of the second mounting portion near the mounting base; the auxiliary contact group is disposed on both the first mounting portion and the second mounting portion, and is located on the side of the first mounting portion and the second mounting portion away from the mounting base.

[0015] Secondly, this utility model provides a DC contactor, including the auxiliary contact structure described in any of the foregoing embodiments.

[0016] The beneficial effects of this utility model embodiment include: The auxiliary contact structure includes a push rod assembly, a main contact group, and an auxiliary contact group. The push rod assembly includes a push rod and a mounting bracket, with the push rod connected to the mounting bracket. The main contact group includes a first moving contact bridge and a second moving contact bridge, both of which are mounted on the mounting bracket and spaced apart. The auxiliary contact group is mounted on the mounting bracket, located on the side of the mounting bracket furthest from the push rod. By mounting the auxiliary contact group, the first moving contact bridge, and the second moving contact bridge on the mounting bracket, respectively on opposite sides of the mounting bracket, the installation stability of the auxiliary contact is improved. Furthermore, the simultaneous operation of the main contact group and the auxiliary contact group does not interfere with each other, ensuring the normal operation of the contactor and accurately reflecting the on / off state of their respective circuits.

[0017] The DC contactor includes an auxiliary contact structure that has all the beneficial effects of such an auxiliary contact structure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a DC contactor provided in an embodiment of the present utility model; Figure 2 A schematic diagram of the auxiliary contact structure provided in an embodiment of this utility model; Figure 3 This is a partial structural diagram of the auxiliary contact structure provided in an embodiment of the present utility model; Figure 4 This is a partial structural schematic diagram of a DC contactor provided in an embodiment of the present utility model; Figure 5 An exploded view of a portion of the structure of the auxiliary contact assembly provided in an embodiment of this utility model; Figure 6 An exploded view of a portion of the auxiliary contact structure provided in an embodiment of this utility model; Figure 7 This is a schematic diagram of the structure of the first support and the second support provided in an embodiment of the present utility model; Figure 8 This is a schematic diagram of the mounting base provided in an embodiment of the present utility model.

[0020] Icons: 1000 - DC contactor; 100 - Auxiliary contact structure; 10 - Push rod assembly; 11 - Push rod; 12 - Mounting bracket; 121 - First bracket; 122 - Second bracket; 123 - Mounting seat; 13 - First elastic element; 14 - Second elastic element; 20 - Main contact group; 21 - First moving contact bridge; 22 - Second moving contact bridge; 23 - First stationary contact; 24 - Second stationary contact; 30 - Auxiliary contact group; 31 - Auxiliary bracket ; 311-Base plate; 312-Fixing block; 313-First side plate; 314-Second side plate; 32-Auxiliary moving spring; 321-First bending part; 322-Second bending part; 33-Auxiliary contact; 34-Auxiliary contact point; 40-Cover; 50-Yoke plate; 61-Upper magnetic conductor; 62-Lower magnetic conductor; 200-Electrical housing; 300-Electromagnetic mechanism; 400-Connector; 500-Adapter; 600-Circuit board. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] As described in the background section, for a double-gang DC contactor, the auxiliary contacts need to simultaneously indicate the operating status of both main circuits. However, existing double-gang DC contactors suffer from insufficient installation stability of their auxiliary contacts, which may lead to failure of the auxiliary contact conduction circuit, thus failing to accurately reflect the on / off status of the main circuits.

[0028] Based on this, please refer to Figures 1-8 The present invention provides an auxiliary contact structure 100 and a DC contactor 1000, which can effectively improve the technical problems mentioned above. That is, it can improve the installation stability of the auxiliary contact and accurately reflect the on / off state of the main circuit.

[0029] It should be noted that the first direction mentioned below refers to... Figures 1-8 The X direction is shown in the figure, and the second direction is... Figures 1-8 The Y direction shown in the figure, the third direction is Figures 1-8 The Z direction is shown in the figure. The auxiliary contact structure 100 and the DC contactor 1000 will be described in detail below.

[0030] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the DC contactor 1000 provided in this embodiment, combined with... Figure 1 The DC contactor 1000 includes an auxiliary contact structure 100 and an electrical housing 200, with the auxiliary contact structure 100 disposed within the electrical housing 200.

[0031] For details, please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the auxiliary contact structure 100 provided in this embodiment. Figure 3 This is a partial structural diagram of the auxiliary contact structure 100 provided in this embodiment. (In conjunction with...) Figure 2 and Figure 3 The auxiliary contact structure 100 includes a push rod assembly 10, a main contact group 20, and an auxiliary contact group 30. The push rod assembly 10 includes a push rod 11 and a mounting bracket 12, with the push rod 11 connected to the mounting bracket 12. The main contact group 20 includes a first moving contact bridge 21 and a second moving contact bridge 22, both of which are disposed on the mounting bracket 12 and spaced apart. The auxiliary contact group 30 is disposed on the mounting bracket 12 and located on the side of the mounting bracket 12 away from the push rod 11.

[0032] As is easily understood, push rod 11 can move mounting bracket 12, thereby simultaneously moving the first moving contact bridge 21, the second moving contact bridge 22, and the auxiliary contact group 30, realizing the simultaneous on / off operation of the auxiliary contact group 30 and the main contact group 20. That is, when the main contact group 20 is conducting, the auxiliary contact group 30 is also conducting, accurately reflecting the on / off state of the main circuit. Furthermore, by setting the auxiliary contact group 30, the first moving contact bridge 21, and the second moving contact bridge 22 on the mounting bracket 12, respectively located on opposite sides of the mounting bracket 12, the installation stability of the auxiliary contact 33 can be improved, and the simultaneous operation of the main contact group 20 and the auxiliary contact group 30 does not affect each other, ensuring the normal operation of the contactor and accurately reflecting the on / off state of their respective circuits.

[0033] Please refer to Figure 4 , Figure 4 This is a partial structural diagram of the DC contactor 1000 provided in this embodiment, combined with... Figures 1-4 The DC contactor 1000 also includes an electromagnetic mechanism 300, which is disposed within the electrical housing 200. As will be readily apparent to those skilled in the art, the electromagnetic mechanism 300 includes a core, a coil, and an armature. When the coil is energized, it generates a magnetic field, which, under electromagnetic influence, drives the armature to move, thereby pushing the push rod 11 to move. Simultaneously, through the mounting bracket 12, it drives the first moving contact bridge 21, the second moving contact bridge 22, and the auxiliary contact group 30 to move, thereby realizing the breaking operation of the main contact group 20 and the auxiliary contact group 30.

[0034] Please continue to combine Figure 2 and Figure 3 Both the first movable contact bridge 21 and the second movable contact bridge 22 extend along a first direction, and are spaced apart along a second direction. The auxiliary contact group 30 extends along the second direction and is spaced apart from the first movable contact bridge 21 and the second movable contact bridge 22 along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0035] By extending both the first moving contact bridge 21 and the second moving contact bridge 22 along the first direction, it is convenient for the two first stationary contacts 23 to engage with the two ends of the first moving contact bridge 21 in the first direction, and for the two second stationary contacts 24 to engage with the two ends of the second moving contact bridge 22 in the first direction. Simultaneously, extending the auxiliary contact group 30 along the second direction, so that after engaging with the first moving contact bridge 21 and the second moving contact bridge 22, forms an "H"-shaped structure on opposite sides of the mounting frame 12, further improving the installation stability of the auxiliary contact group 30 and enhancing the accuracy of the on / off state of the main circuit.

[0036] Please refer to Figure 5 , Figure 5 This is an exploded view of a portion of the structure of the auxiliary contact assembly 30 provided in this embodiment, combined with... Figure 3 and Figure 5 The auxiliary contact assembly 30 includes an auxiliary support 31 and an auxiliary moving spring 32. The auxiliary support 31 is disposed on the mounting frame 12, and the auxiliary moving spring 32 is disposed on the side of the auxiliary support 31 away from the mounting frame 12.

[0037] Combination Figure 2 , Figure 3 and Figure 5 The auxiliary contact structure 100 also includes a cover 40 and a yoke plate 50. The cover 40 is connected to the yoke plate 50. The push rod 11 passes through the yoke plate 50. The mounting bracket 12 is set on the yoke plate 50 and is located inside the cover 40. The first moving contact bridge 21, the second moving contact bridge 22, the auxiliary bracket 31 and the auxiliary moving spring 32 are all located inside the cover 40.

[0038] It should be noted that by setting the cover 40 and the yoke plate 50, the two can cooperate to form an arc-extinguishing chamber, which can cover and separate the electric arc generated by the main contact group 20 and the auxiliary contact group 30, thus protecting other components of the DC contactor 1000.

[0039] Furthermore, the main contact group 20 also includes two first stationary contacts 23 and two second stationary contacts 24. Both first stationary contacts 23 pass through the housing 40, and a first moving contact bridge 21 connects and conducts the two first stationary contacts 23. Both second stationary contacts 24 pass through the housing 40, and a second moving contact bridge 22 connects and conducts the two second stationary contacts 24. The auxiliary contact group 30 also includes two auxiliary contacts 33, both of which pass through the housing 40. An auxiliary moving spring 32 connects and conducts the two auxiliary contacts 33.

[0040] It should be noted that the DC contactor 1000 provided in this embodiment is a double-connector DC contactor 1000, that is, it has two sets of main contacts, and each set of main contacts has two main contacts, corresponding to two first stationary contacts 23 and two second stationary contacts 24. Furthermore, the electromagnetic mechanism 300, by driving the push rod 11 to move relative to the yoke plate 50, can simultaneously drive the first moving contact bridge 21, the second moving contact bridge 22, and the auxiliary moving spring 32 on the auxiliary support 31 to move, so that the two ends of the first moving contact bridge 21 contact the two first stationary contacts 23 respectively, and the two ends of the second moving contact bridge 22 contact the two second stationary contacts 24 respectively, thereby realizing the conduction of the two main circuits; of course, it also makes the two ends of the auxiliary moving spring 32 contact the two auxiliary contacts 33 respectively, realizing the conduction of the auxiliary circuit, so that the auxiliary contact group 30 can accurately reflect the on / off state of the main circuit.

[0041] In addition, it should be noted that in this embodiment, both the auxiliary bracket 31 and the auxiliary moving spring 32 extend along the second direction, which can further improve the installation stability and enhance the conduction effect of the auxiliary moving spring 32.

[0042] Combination Figure 2 and Figure 5 In order to improve the contact and conduction effect between the auxiliary moving spring 32 and the auxiliary contact 33, the auxiliary contact group 30 also includes two auxiliary contacts 34. The two auxiliary contacts 34 are respectively disposed at both ends of the auxiliary moving spring 32 and are used to contact the two auxiliary contacts 33 respectively.

[0043] Please continue to combine Figure 5 The auxiliary support 31 includes a base plate 311 and a fixing block 312. The base plate 311 is disposed on the mounting frame 12, and the fixing block 312 is disposed on the side of the base plate 311 away from the mounting frame 12. The auxiliary moving spring 32 passes through the fixing block 312 and is spaced apart from the base plate 311.

[0044] As is easily understood, the installation and fixation of the auxiliary moving spring 32 can be conveniently achieved by setting the fixing block 312. Since the auxiliary moving spring 32 has a certain degree of elasticity, by spaced the auxiliary moving spring 32 and the base plate 311 apart, the auxiliary moving spring 32 can undergo elastic deformation after contacting the auxiliary contact 33, thus improving the contact stability between the two. Furthermore, when the coil of the electromagnetic mechanism 300 is de-energized, the auxiliary moving spring 32 can also return to its initial state under the action of elastic force.

[0045] To improve the elasticity of the auxiliary moving spring 32, a first bent portion 321 and a second bent portion 322 are respectively provided at both ends of the auxiliary moving spring 32. Specifically, in this embodiment, the first bent portion 321 and the second bent portion 322 are located between the two auxiliary contacts 34.

[0046] Furthermore, in order to provide arc isolation for the auxiliary contact 33, the auxiliary bracket 31 also includes a first side plate 313 and a second side plate 314. The first side plate 313 and the second side plate 314 are spaced apart on the base plate 311 and are both located on the side of the base plate 311 away from the mounting bracket 12. The auxiliary moving spring 32 is located between the first side plate 313 and the second side plate 314.

[0047] Please refer to Figure 6 , Figure 6 This is an exploded view of a portion of the auxiliary contact structure 100 provided in this embodiment, combined with... Figure 3 and Figure 6The mounting bracket 12 includes a first bracket 121, a second bracket 122, and a mounting base 123. The first bracket 121 and the second bracket 122 are spaced apart from each other on the mounting base 123, and the push rod 11 is connected to the mounting base 123. A first movable contact bridge 21 is disposed on the side of the first bracket 121 near the mounting base 123, and a second movable contact bridge 22 is disposed on the side of the second bracket 122 near the mounting base 123. An auxiliary contact group 30 is disposed on both the first bracket 121 and the second bracket 122, and is located on the side of the first bracket 121 and the second bracket 122 away from the mounting base 123. Specifically, in this embodiment, the auxiliary bracket 31 is disposed on both the first bracket 121 and the second bracket 122.

[0048] In other words, under the pushing action of the push rod 11, the first bracket 121 and the second bracket 122 can be moved simultaneously through the mounting base 123, thereby simultaneously driving the first stationary contact 23, the second stationary contact 24 and the auxiliary moving spring 32 on the auxiliary bracket 31 to move stably, so that the auxiliary contact 33 can accurately reflect the on / off state of the main circuit.

[0049] To achieve a buffering effect during the breaking process of the main contact assembly 20, in this embodiment, the first moving contact bridge 21 is slidably engaged with the first support 121, and the push rod assembly 10 further includes a first elastic element 13, with both ends of the first elastic element 13 connected to the first moving contact bridge 21 and the mounting base 123, respectively. The second moving contact bridge 22 is slidably engaged with the second support 122, and the push rod assembly 10 further includes a second elastic element 14, with both ends of the second elastic element 14 connected to the second moving contact bridge 22 and the mounting base 123, respectively.

[0050] It should be noted that in this embodiment, the first bracket 121, the second bracket 122, and the mounting base 123 are integrally formed; that is, the first bracket 121, the second bracket 122, and the mounting base 123 are injection molded into an integral structure through injection molding, which can improve the overall structural strength of the mounting bracket 12 and improve the installation efficiency of the contact structure.

[0051] Of course, in other embodiments, the first bracket 121 and the second bracket 122 can also be detachably connected to the mounting base 123, which can facilitate assembly with the main contact group 20.

[0052] Optionally, the first bracket 121 and the second bracket 122 can be respectively engaged with the mounting base 123. For details, please refer to... Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the first support 121 and the second support 122 provided in this embodiment. Figure 8 This is a schematic diagram of the mounting base 123 provided in this embodiment. (In conjunction with...) Figures 6-8The first bracket 121 includes a first latching portion, a second latching portion, and a first mounting portion, with the first latching portion and the second latching portion spaced apart from each other in the first mounting portion; the second bracket 122 includes a third latching portion, a fourth latching portion, and a second mounting portion, with the third latching portion and the fourth latching portion spaced apart from each other in the second mounting portion.

[0053] Mounting base 123 has a first slot, a second slot, a third slot and a fourth slot arranged at intervals. The end of the first engaging part away from the first mounting part is located in the first slot, the end of the second engaging part away from the first mounting part is located in the second slot, the end of the third engaging part away from the second mounting part is located in the third slot, and the end of the fourth engaging part away from the second mounting part is located in the fourth slot.

[0054] The first movable contact bridge 21 is disposed on the side of the first mounting portion near the mounting base 123, and the second movable contact bridge 22 is disposed on the side of the second mounting portion near the mounting base 123. The auxiliary contact group 30 is disposed on both the first and second mounting portions, and is located on the side of the first and second mounting portions away from the mounting base 123. Specifically, in this embodiment, the auxiliary bracket 31 is connected to both the first and second mounting portions.

[0055] Combination Figure 3 and Figure 6 The auxiliary contact structure 100 also includes an upper magnetic conductor 61 and a lower magnetic conductor 62. The upper magnetic conductor 61 and the lower magnetic conductor 62 are respectively provided on both sides of the first moving contact bridge 21, and the upper magnetic conductor 61 and the lower magnetic conductor 62 are respectively provided on both sides of the second moving contact bridge 22. One of the upper magnetic conductors 61 is connected to the first support 121, and the other upper magnetic conductor 61 is connected to the second support 122.

[0056] Additionally, please combine Figure 1 and Figure 4 The DC contactor 1000 also includes a connector 400, an adapter 500, and a circuit board 600. The connector 400, adapter 500, and circuit board 600 are all disposed inside the electrical housing 200. One end of the adapter 500 is connected to two auxiliary contacts 33 at the same time, and the other end of the adapter 500 is connected to the circuit board 600. The connector 400 is connected to the circuit board 600.

[0057] In summary, the embodiments of this utility model provide an auxiliary contact structure 100 and a DC contactor 1000. The auxiliary contact structure 100 includes a push rod assembly 10, a main contact group 20, and an auxiliary contact group 30. The push rod assembly 10 includes a push rod 11 and a mounting frame 12, with the push rod 11 connected to the mounting frame 12. The main contact group 20 includes a first moving contact bridge 21 and a second moving contact bridge 22, both of which are disposed on the mounting frame 12 and spaced apart. The auxiliary contact group 30 is disposed on the mounting frame 12 and located on the side of the mounting frame 12 away from the push rod 11. By setting the auxiliary contact group 30, the first moving contact bridge 21 and the second moving contact bridge 22 on the mounting frame 12 and placing them on opposite sides of the mounting frame 12, the installation stability of the auxiliary contact 33 can be improved. On the other hand, the simultaneous operation of the main contact group 20 and the auxiliary contact group 30 can be ensured without affecting each other, thus guaranteeing the normal operation of the contactor and accurately reflecting the on / off state of their respective circuits.

[0058] The DC contactor 1000 includes an auxiliary contact structure 100, which has all the functions and benefits of the auxiliary contact structure 100.

[0059] The above description is merely a specific embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An auxiliary contact structure, characterized by, include: A push rod assembly (10) includes a push rod (11) and a mounting bracket (12), wherein the push rod (11) is connected to the mounting bracket (12); The main contact group (20) includes a first moving contact bridge (21) and a second moving contact bridge (22). The first moving contact bridge (21) and the second moving contact bridge (22) are both disposed on the mounting frame (12), and the first moving contact bridge (21) and the second moving contact bridge (22) are spaced apart. as well as An auxiliary contact assembly (30) is disposed on the mounting bracket (12) and located on the side of the mounting bracket (12) away from the push rod (11).

2. The auxiliary contact structure of claim 1, wherein The first movable contact bridge (21) and the second movable contact bridge (22) are both arranged to extend along a first direction, and the first movable contact bridge (21) and the second movable contact bridge (22) are spaced apart along a second direction; the auxiliary contact group (30) extends along the second direction, and is spaced apart from the first movable contact bridge (21) and the second movable contact bridge (22) along a third direction; The first direction, the second direction, and the third direction are perpendicular to each other.

3. The auxiliary contact structure of claim 1, wherein The auxiliary contact assembly (30) includes an auxiliary bracket (31) and an auxiliary moving spring (32). The auxiliary bracket (31) is disposed on the mounting frame (12), and the auxiliary moving spring (32) is disposed on the side of the auxiliary bracket (31) away from the mounting frame (12).

4. The auxiliary contact structure according to claim 3, characterized in that, The auxiliary support (31) includes a base plate (311) and a fixing block (312). The base plate (311) is disposed on the mounting frame (12). The fixing block (312) is disposed on the side of the base plate (311) away from the mounting frame (12). The auxiliary moving spring (32) passes through the fixing block (312) and is spaced apart from the base plate (311).

5. The auxiliary contact structure of claim 4, wherein, The auxiliary bracket (31) further includes a first side plate (313) and a second side plate (314). The first side plate (313) and the second side plate (314) are spaced apart from the base plate (311) and are both located on the side of the base plate (311) away from the mounting bracket (12). The auxiliary moving spring (32) is located between the first side plate (313) and the second side plate (314).

6. The auxiliary contact structure of claim 3, wherein The auxiliary contact structure (100) further includes a cover (40) and a yoke plate (50). The cover (40) is connected to the yoke plate (50). The push rod (11) passes through the yoke plate (50). The mounting bracket (12) is disposed on the yoke plate (50) and located inside the cover (40). The first moving contact bridge (21), the second moving contact bridge (22), the auxiliary bracket (31), and the auxiliary moving spring (32) are all located inside the cover (40). The main contact group (20) further includes two first stationary contacts (23) and two second stationary contacts (24). The two first stationary contacts (23) are both disposed through the housing (40), and the first moving contact bridge (21) is used to connect and conduct the two first stationary contacts (23). The two second stationary contacts (24) are both disposed through the housing (40), and the second moving contact bridge (22) is used to connect and conduct the two second stationary contacts (24). The auxiliary contact group (30) also includes two auxiliary contacts (33), both of which are disposed in the housing (40), and the auxiliary moving spring (32) is used to connect and conduct the two auxiliary contacts (33).

7. The auxiliary contact structure of claim 1, wherein The mounting bracket (12) includes a first bracket (121), a second bracket (122), and a mounting base (123). The first bracket (121) and the second bracket (122) are spaced apart from each other on the mounting base (123). The push rod (11) is connected to the mounting base (123). The first movable contact bridge (21) is disposed on the side of the first bracket (121) near the mounting base (123), and the second movable contact bridge (22) is disposed on the side of the second bracket (122) near the mounting base (123); the auxiliary contact group (30) is disposed on both the first bracket (121) and the second bracket (122), and is located on the side of the first bracket (121) and the second bracket (122) away from the mounting base (123).

8. The auxiliary contact structure of claim 7, wherein, The first bracket (121), the second bracket (122), and the mounting base (123) are integrally formed.

9. The auxiliary contact structure of claim 7, wherein, The first bracket (121) includes a first snap-fit ​​portion, a second snap-fit ​​portion, and a first mounting portion, wherein the first snap-fit ​​portion and the second snap-fit ​​portion are spaced apart from each other in the first mounting portion; the second bracket (122) includes a third snap-fit ​​portion, a fourth snap-fit ​​portion, and a second mounting portion, wherein the third snap-fit ​​portion and the fourth snap-fit ​​portion are spaced apart from each other in the second mounting portion. The mounting base (123) has a first slot, a second slot, a third slot, and a fourth slot arranged at intervals in sequence. The end of the first engaging part away from the first mounting part is disposed in the first slot, the end of the second engaging part away from the first mounting part is disposed in the second slot, the end of the third engaging part away from the second mounting part is disposed in the third slot, and the end of the fourth engaging part away from the second mounting part is disposed in the fourth slot. The first movable contact bridge (21) is disposed on the side of the first mounting part near the mounting base (123), and the second movable contact bridge (22) is disposed on the side of the second mounting part near the mounting base (123); the auxiliary contact group (30) is disposed on both the first mounting part and the second mounting part, and is located on the side of the first mounting part and the second mounting part away from the mounting base (123).

10. A direct current contactor characterized by, Includes the auxiliary contact structure (100) as described in any one of claims 1-9.

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