A high voltage DC relay with auxiliary contacts

Abstract

The present invention discloses a high-voltage DC relay with auxiliary contacts, including a housing, two main lead-out terminals, an active spring and a push rod component; the relay also includes two auxiliary lead-out terminals, an auxiliary dynamic spring and an insulating partition, the two auxiliary lead-out terminals are respectively mounted on the same side of the top of the housing corresponding to the connection line of the two main lead-out terminals and their respective bottoms are located inside the housing; the auxiliary dynamic spring is insulated and fixed to the dynamic component through the insulating partition to follow the movement of the dynamic component to achieve bridging of the two auxiliary lead-out terminals. The present invention can achieve the purpose of adding auxiliary contacts to the high-voltage DC relay to realize the monitoring of the action state of the main contacts, and will not increase the volume of the high-voltage DC relay product too much to meet the application of the product in small space volume occasions.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage direct current relays, in particular to a high-voltage direct current relay with auxiliary contacts. Background Art

[0002] A high-voltage DC relay in the prior art includes a contact part and a magnetic circuit part. The magnetic circuit part adopts a direct-acting magnetic circuit structure. The contact part is arranged at the upper part, and the magnetic circuit part is arranged at the lower part. The magnetic circuit part drives the movable spring part of the contact part to move through the push rod part. The movable spring part usually adopts a straight-type movable spring (also called a bridge-type movable spring). The load is connected and disconnected by the contact and separation of the straight-type movable spring and two static contact lead-out terminals (i.e., two load lead-out terminals). This type of high-voltage DC relay in the prior art is required to have auxiliary contacts when required by the application environment. This type of high-voltage DC relay with auxiliary contacts usually uses a straight-piece auxiliary spring, which is installed in the push rod component, and the projections of the straight-piece auxiliary spring and the active spring on the same horizontal plane are vertically intersected. In this way, the two auxiliary static contacts will be on both sides of the connecting line of the two main static contacts. This structure will increase the volume of the product due to the increase in auxiliary contacts. When the volume of the product is limited, such as high-voltage DC relays used in charging pile projects, it is difficult to add auxiliary contacts. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a high-voltage DC relay with auxiliary contacts. Through structural improvement, auxiliary contacts can be added to the high-voltage DC relay to monitor the operating state of the main contacts, while the volume of the high-voltage DC relay product will not be increased too much to meet the application of the product in occasions with small space volume.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a high-voltage DC relay with auxiliary contacts, including a cover, two main lead-out terminals, an active spring and a push rod component; the two main lead-out terminals are respectively installed on the top of the cover and their respective bottom ends are located inside the cover; the active spring is accommodated in the cover and matched below the two main lead-out terminals to achieve bridging between the two main lead-out terminals; the active spring and the push rod component are installed together and together form a moving assembly; the relay also includes two auxiliary lead-out terminals, an auxiliary moving spring and an insulating partition, the two auxiliary lead-out terminals are respectively installed on the top of the cover Corresponding to the same side of the connection line of the two main lead-out terminals and making their respective bottoms inside the cover shell; the auxiliary dynamic spring is insulated and fixed to the dynamic component through the insulating partition to achieve bridging the two auxiliary lead-out terminals with the movement of the dynamic component; the auxiliary dynamic spring includes a connecting portion fixed to the insulating partition, a contact portion used to cooperate with the bottom ends of the two auxiliary lead-out terminals and a main body portion between the connecting portion and the contact portion, the contact portion is arranged in the horizontal direction, the main body portion and the insulating partition are both arranged in the vertical direction, and the main body portion is outside one side of the insulating partition, and the other side of the insulating partition is connected to the dynamic component.

[0005] The auxiliary dynamic spring is a U-shaped structure, the bottom side of the U-shaped structure is set as the connecting part, the two side sides of the U-shaped structure are set as the main body, the ends of the two side sides of the U-shaped structure are set as the contact part, and the connecting part is on the top and the contact part is on the bottom.

[0006] The auxiliary dynamic spring is a U-shaped structure, the bottom side of the U-shaped structure is set as the contact part, the two side sides of the U-shaped structure are set as the main body, the ends of the two side sides of the U-shaped structure are set as the connecting part, and the connecting part is on the top and the contact part is on the bottom.

[0007] The auxiliary dynamic spring is a mouth-shaped structure, the upper side of the mouth of the mouth-shaped structure is set as the connecting part, the two side sides of the mouth of the mouth-shaped structure are set as the main body, and the bottom side of the mouth of the mouth-shaped structure is set as the contact part.

[0008] The main body of the auxiliary dynamic spring is further provided with a bending portion protruding in a direction away from a side of the insulating partition.

[0009] The connecting portion of the auxiliary dynamic spring is embedded in the insulating spacer by injection molding so that the connecting portion of the auxiliary dynamic spring is fixed to the insulating spacer.

[0010] The connecting portion of the auxiliary dynamic spring is bent into a horizontal or vertical shape and buried in the insulating partition.

[0011] The connecting portion of the auxiliary dynamic spring is also provided with a first through hole, so that the plastic body can enter the first through hole during injection molding, thereby increasing the connection strength between the auxiliary dynamic spring and the insulating partition.

[0012] The connecting portion of the auxiliary dynamic spring is fixed to the insulating partition by interference fit or hot riveting on one side of the insulating partition. At least one first bulge is provided on one side of the insulating partition. The connecting portion of the auxiliary dynamic spring is set to a vertical shape, and at least one second through hole is provided in the connecting portion. The second through hole of the auxiliary dynamic spring is stuck in the first bulge of the insulating partition and fixed by interference fit or hot riveting.

[0013] The push rod component includes a U-shaped bracket, a first fixing plate and a push rod. One end of the push rod is combined with the first fixing plate to form a push rod head by injection molding. The other end of the push rod is connected to the magnetic circuit part as a tail. The two ends of the U-shaped bracket are downwardly connected to the first fixing plates extending to both sides of the push rod head. The active spring is installed in the U-shaped bracket through the main spring. One end of the main spring pushes the active spring toward the inner side of the top of the U-shaped bracket, and the other end of the main spring rests on the push rod head.

[0014] The other side of the insulating partition is fixed to the active spring via a second fixing plate, the second fixing plate is horizontally arranged, one end of the second fixing plate is fixed to the insulating partition, and the other end of the second fixing plate is fixed to the bottom surface of the active spring by riveting.

[0015] The active spring is provided with a second convex burl extending downward, and the other end of the second fixing plate is provided with a third through hole, and the second convex burl of the active spring is fitted in the third through hole of the second fixing plate and fixed by riveting.

[0016] One end of the second fixing plate is embedded in the insulating partition by injection molding so that one end of the second fixing plate is fixed to the insulating partition.

[0017] The other side of the insulating partition is formed into a whole with the plastic body part of the push rod head by integral injection molding.

[0018] The other side of the insulating partition is fixed to the top of the U-shaped bracket through a third fixing plate, the third fixing plate is horizontally arranged, one end of the third fixing plate is fixed to the insulating partition, and the other end of the third fixing plate is fixed to the top of the U-shaped bracket by riveting.

[0019] The other end of the third fixing plate is provided with a third convex burl protruding downward, the top of the U-shaped bracket is provided with a fourth through hole, and the third convex burl of the third fixing plate fits in the fourth through hole of the U-shaped bracket and is fixed by riveting.

[0020] The top of the U-shaped bracket is also provided with a boss protruding upward, and the fourth through hole of the U-shaped bracket is arranged at the boss, so that the riveted part of the third convex burl of the third fixing plate makes way for the active spring.

[0021] One end of the third fixing plate is embedded in the insulating partition by injection molding so that one end of the third fixing plate is fixed to the insulating partition.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The present invention adopts the method of installing two auxiliary lead-out terminals on the same side of the connection line corresponding to the two main lead-out terminals at the top of the housing and making the bottom of each terminal inside the housing; and the auxiliary dynamic spring is fixed to the dynamic component through the insulating partition to achieve bridging the two auxiliary lead-out terminals with the movement of the dynamic component; the auxiliary dynamic spring includes a connecting portion for fixing with the insulating partition, a contact portion for matching with the bottom ends of the two auxiliary lead-out terminals, and a main body portion between the connecting portion and the contact portion, the contact portion is arranged in the horizontal direction, the main body portion and the insulating partition are arranged in the vertical direction, and the main body portion is outside one side of the insulating partition, and the other side of the insulating partition is connected to the dynamic component. This structure of the present invention can achieve the purpose of adding auxiliary contacts in the high-voltage DC relay to realize the monitoring of the operating state of the main contacts, and will not increase the volume of the high-voltage DC relay product too much to meet the application of the product in small space volume occasions.

[0024] 2. The present invention adopts the U-shaped structure or the mouth-shaped structure to design the auxiliary dynamic spring, which has the characteristics of simple structure and convenience in arranging the main body of the auxiliary dynamic spring along the vertical direction to reduce the volume space occupied by the auxiliary dynamic spring. At the same time, it is also convenient to connect with the insulating partition.

[0025] 3. The present invention adopts a method of providing a bending portion protruding toward a side away from the insulating partition on the main body of the auxiliary dynamic spring, thereby increasing the rigidity of the auxiliary dynamic spring and improving the stability of the contact portion bent into a horizontal shape in contact with the bottom end of the auxiliary lead-out terminal.

[0026] 4. The present invention adopts the method of fixing the other side of the insulating partition to the active spring by riveting through the second fixing plate, or fixing the other side of the insulating partition to the top of the U-shaped bracket by riveting through the third fixing plate, or forming the other side of the insulating partition into a whole with the plastic body part of the push rod head by integral injection molding, so that the auxiliary dynamic spring can move with the movement of the moving component and has the effect of reliable connection and effective isolation of strong and weak electricity.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the high-voltage DC relay with auxiliary contacts of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a three-dimensional shape of a first embodiment of the present invention;

[0029] Figure 2 A structural cross-sectional view of the first embodiment of the present invention (a cross-sectional view along the line connecting the two main lead-out terminals);

[0030] Figure 3 A structural cross-sectional view of the first embodiment of the present invention (a middle cross-sectional view along a line perpendicular to the connection between the two main lead-out terminals);

[0031] Figure 4 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring, the insulating partition and the dynamic component in cooperation with each other according to the first embodiment of the present invention;

[0032] Figure 5 A top view of the auxiliary dynamic spring, the insulating partition and the dynamic assembly in cooperation with each other according to the first embodiment of the present invention;

[0033] Figure 6 A front view of the auxiliary dynamic spring, the insulating partition and the dynamic component in cooperation with each other according to the first embodiment of the present invention;

[0034] Figure 7 is along Figure 6 The cross-sectional view of line AA in the figure;

[0035] Figure 8 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring, the insulating partition and the U-shaped bracket in cooperation with each other according to the first embodiment of the present invention;

[0036] Fig. 9 A side view of the auxiliary dynamic spring, the insulating partition and the U-shaped bracket in cooperation with each other according to the first embodiment of the present invention;

[0037] Fig.10 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring, the insulating partition and the third fixing plate in cooperation with each other according to the first embodiment of the present invention;

[0038] Fig.11 A side view of the auxiliary dynamic spring, the insulating partition and the third fixing plate in cooperation with each other according to the first embodiment of the present invention;

[0039] Fig.12 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring according to the first embodiment of the present invention;

[0040] Fig.13 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring, the insulating partition and the dynamic component in cooperation with each other according to the second embodiment of the present invention;

[0041] Fig.14 A side view of the auxiliary dynamic spring, the insulating partition and the dynamic component in cooperation with each other according to the second embodiment of the present invention;

[0042] Fig.15 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring, the insulating partition and the push rod head in the second embodiment of the present invention;

[0043] Fig.16 A side view of the auxiliary dynamic spring, the insulating partition and the push rod head in cooperation with each other according to the second embodiment of the present invention;

[0044] Fig.17 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring according to the second embodiment of the present invention;

[0045] Fig.18 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring, the insulating partition and the dynamic component in coordination with each other according to the third embodiment of the present invention;

[0046] Fig.19 A side view of the auxiliary dynamic spring, the insulating partition and the dynamic assembly in cooperation with each other according to the third embodiment of the present invention;

[0047] Fig. 20 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring, the insulating partition and the active spring in the third embodiment of the present invention;

[0048] Fig.21 A side view of the auxiliary dynamic spring, the insulating partition and the active spring in cooperation with each other according to the third embodiment of the present invention;

[0049] Fig. 22 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring, the insulating partition and the second fixing plate in cooperation with each other according to the third embodiment of the present invention;

[0050] Fig.23 A schematic diagram of the three-dimensional shape of the auxiliary dynamic spring according to the third embodiment of the present invention. DETAILED DESCRIPTION

[0051] Embodiment 1

[0052] See also Figures 1 to 12As shown, a high-voltage DC relay with auxiliary contacts of the present invention comprises an upper shell 11, a base 12, a cover 2, two main lead-out terminals 3, an active spring 4, a push rod component 5 and a magnetic circuit portion 6, wherein the cover 2 is a ceramic cover; the two main lead-out terminals 3 are respectively mounted on the top of the cover 2 and their respective bottom ends are located in the cover 2; the active spring 4 is accommodated in the cover 2 and is fitted under the two main lead-out terminals 3 to achieve bridging the two main lead-out terminals 3; when the active spring 4 is pushed by the push rod component 5 When the relay is pushed and contacts the two main lead-out terminals 3, the current flows in from one of the main lead-out terminals 3, passes through the active spring 4 and flows out from the other main lead-out terminal 3; the active spring 4 and the push rod component 5 are assembled together to form a moving assembly 50; the active spring 4 is mounted on the upper part of the push rod component 5, and the lower part of the push rod component 5 is connected to the magnetic circuit part 6; the relay also includes two auxiliary lead-out terminals 71, an auxiliary dynamic spring 72 and an insulating partition 73, and the two auxiliary lead-out terminals 71 are respectively mounted on The top of the housing 2 corresponds to the same side of the connection line of the two main lead-out terminals 3 and makes the bottom of each of them inside the housing 2; the auxiliary dynamic spring 72 is insulated and fixed to the moving component 50 through the insulating partition 73 to achieve bridging the two auxiliary lead-out terminals 71 with the movement of the moving component 50; when the active spring 4 contacts the two main lead-out terminals 3, the auxiliary dynamic spring 72 also contacts the two auxiliary lead-out terminals 71, and the signal collection of the auxiliary lead-out terminals 71 can realize the monitoring of the action status of the main contacts; the auxiliary The auxiliary spring 72 includes a connecting portion 721 for fixing to the insulating partition 73, a contact portion 723 for cooperating with the bottom ends of the two auxiliary lead-out terminals 71, and a main body portion 722 between the connecting portion 721 and the contact portion 723. The contact portion 723 is arranged in the horizontal direction, the main body portion 722 and the insulating partition 73 are both arranged in the vertical direction, and the main body portion 722 is outside one side of the insulating partition 73, and the other side of the insulating partition 73 is connected to the moving component 50.

[0053] In this embodiment, the auxiliary dynamic spring 72 is a U-shaped structure, the bottom side of the U-shaped structure is set as the contact portion 723, the two side sides of the U-shaped structure are set as the main body 722, and the ends of the two side sides of the U-shaped structure are set as the connecting portion 721, and the connecting portion 721 is on the top and the contact portion 723 is on the bottom.

[0054] In this embodiment, the connecting portion 721 is also bent from a vertical main body portion 722 into a horizontal shape.

[0055] In this embodiment, a reinforcing sheet 7211 is connected between the ends of both side edges of the U-shaped structure.

[0056] In this embodiment, the main body 722 of the auxiliary dynamic spring 72 is further provided with a bending portion 7221 protruding in a direction away from a side of the insulating partition 73 .

[0057] In this embodiment, the connection portion 721 of the auxiliary dynamic spring is embedded in the insulating spacer 73 by injection molding so that the connection portion 721 of the auxiliary dynamic spring is fixed to the insulating spacer 73 .

[0058] In this embodiment, the connecting portion 721 of the auxiliary dynamic spring is bent into a horizontal shape and embedded in the insulating partition 73 .

[0059] In this embodiment, the connecting portion 721 of the auxiliary dynamic spring is further provided with a first through hole 7212 to allow the plastic body to enter the first through hole 7212 during injection molding, thereby increasing the connection strength between the auxiliary dynamic spring 72 and the insulating partition 73 .

[0060] In this embodiment, the push rod component 5 includes a U-shaped bracket 51, a first fixing plate 52 and a push rod 53. One end of the push rod 53 is combined with the first fixing plate 52 through injection molding to form a push rod head 54. The other end of the push rod is connected to the magnetic circuit part 6 as a tail. The two ends of the U-shaped bracket 51 are downwardly connected to the first fixing plate 52 extending to both sides of the push rod head. The active spring 4 is installed in the U-shaped bracket 51 through the main spring 41. One end of the main spring 41 pushes the active spring 4 toward the inner side of the top of the U-shaped bracket 51, and the other end of the main spring 41 is against the push rod head 54.

[0061] In this embodiment, the other side of the insulating partition 73 is fixed to the top of the U-shaped bracket 51 through a third fixing plate 74. The third fixing plate 74 is horizontally arranged, one end of the third fixing plate 74 is fixed to the insulating partition 73, and the other end of the third fixing plate 74 is fixed to the top of the U-shaped bracket 51 by riveting.

[0062] In this embodiment, the other end of the third fixing plate 74 is provided with a third protrusion 741 protruding downward, and the top of the U-shaped bracket 51 is provided with a fourth through hole 511. The third protrusion 741 of the third fixing plate 74 fits in the fourth through hole 511 of the U-shaped bracket 51 and is fixed by riveting.

[0063] In this embodiment, the top of the U-shaped bracket 51 is also provided with a boss 512 protruding upward, and the fourth through hole 511 of the U-shaped bracket is provided at the boss 512, so that the riveted part of the third convex bulge 741 of the third fixing plate makes way for the active spring 4.

[0064] In this embodiment, one end of the third fixing piece 74 is embedded in the insulating partition 73 by injection molding so that one end of the third fixing piece 74 is fixed to the insulating partition 73 .

[0065] A high-voltage DC relay with auxiliary contacts of the present invention adopts the method of installing two auxiliary lead-out terminals 71 on the same side of the connection line corresponding to the two main lead-out terminals 3 at the top of the cover 2 respectively and making their respective bottoms inside the cover 2; and the auxiliary dynamic spring 72 is insulated and fixed to the moving component 50 through the insulating partition 73 to achieve bridging the two auxiliary lead-out terminals 71 with the movement of the moving component 50; the auxiliary dynamic spring 72 includes a connecting portion 721 for fixing to the insulating partition, a contact portion 723 for matching with the bottom ends of the two auxiliary lead-out terminals and a main body portion 722 located between the connecting portion and the contact portion, the contact portion 723 is arranged in the horizontal direction, the main body portion 722 and the insulating partition 73 are both arranged in the vertical direction, and the main body portion 722 is located outside one side of the insulating partition 73, and the other side of the insulating partition 73 is connected to the moving component 50. The structure of the present invention can not only achieve the purpose of adding auxiliary contacts to the high-voltage DC relay to monitor the operating state of the main contacts, but also will not increase the volume of the high-voltage DC relay product too much to meet the application of the product in small space situations.

[0066] A high-voltage DC relay with auxiliary contacts of the present invention adopts an auxiliary dynamic spring 72 designed as a U-shaped structure, which has the characteristics of simple structure and convenience in vertically arranging the main body 722 of the auxiliary dynamic spring to reduce the volume space occupied by the auxiliary dynamic spring 72 of the product. At the same time, it is also convenient to connect with the insulating partition 73.

[0067] A high-voltage DC relay with auxiliary contacts of the present invention adopts a method in which a main body 722 of an auxiliary dynamic spring 72 is also provided with a bending portion 7221 protruding in a direction away from the insulating partition, thereby increasing the rigidity of the auxiliary dynamic spring 72 and improving the stability of the contact portion 723 bent into a horizontal shape in contact with the bottom end of the auxiliary lead-out terminal 73.

[0068] A high-voltage DC relay with auxiliary contacts of the present invention adopts a method of fixing the other side of the insulating partition 73 to the top of the U-shaped bracket 51 by riveting through the third fixing plate 74, so that the auxiliary dynamic spring 72 can move with the movement of the moving component 50, and has the effect of reliable connection and effective isolation of strong and weak electricity.

[0069] Embodiment 2

[0070] See also Figures 13 to 17As shown, a high-voltage DC relay with auxiliary contacts of the present invention is different from the embodiment 1 in that the auxiliary dynamic spring 72 is a mouth-shaped structure, the upper side of the mouth of the mouth-shaped structure is set as the connecting part 721, the two side sides of the mouth of the mouth-shaped structure are set as the main body 722, and the bottom side of the mouth of the mouth-shaped structure is set as the contact part 723.

[0071] In this embodiment, the connecting portion 721 of the auxiliary dynamic spring 72 and the insulating partition 73 are fixed to each other on one side of the insulating partition by means of hot riveting. Three first protrusions 731 are provided on one side of the insulating partition 73. The connecting portion 721 of the auxiliary dynamic spring is set to a vertical shape, and at least one second through hole 7213 is provided in the connecting portion 721. The second through hole 7213 of the auxiliary dynamic spring is stuck in the first protrusion 731 of the insulating partition and fixed by means of hot riveting.

[0072] In this embodiment, the other side of the insulating partition 73 is integrally formed with the plastic body of the push rod head 54 by integral injection molding.

[0073] A high-voltage DC relay with auxiliary contacts of the present invention adopts an auxiliary dynamic spring 72 designed as a mouth-shaped structure, which has the characteristics of simple structure and convenience in arranging the main body of the auxiliary dynamic spring along the vertical direction to reduce the volume space occupied by the auxiliary dynamic spring. At the same time, it is also convenient to connect with the insulating partition.

[0074] A high-voltage DC relay with auxiliary contacts of the present invention forms a whole with the other side of the insulating partition and the plastic body part of the push rod head by integral injection molding, so that the auxiliary dynamic spring can move with the movement of the moving component and has the effect of reliable connection and effective isolation of strong and weak electricity.

[0075] Embodiment 3

[0076] See also Figures 18 to 23 As shown, a high-voltage DC relay with auxiliary contacts of the present invention is different from the embodiment 1 in that the auxiliary dynamic spring 72 is a U-shaped structure, the bottom side of the U-shape of the U-shaped structure is set as the connecting part 721, the two side sides of the U-shaped structure are set as the main body 722, the ends of the two side sides of the U-shaped structure are set as the contact part 723, and the connecting part 721 is on the top and the contact part 723 is on the bottom.

[0077] In this embodiment, the connecting portion 721 of the auxiliary dynamic spring is bent into a vertical shape and embedded in the insulating partition 73 .

[0078] In this embodiment, the other side of the insulating partition 73 is fixed to the active spring 4 through a second fixing plate 75. The second fixing plate 75 is horizontally arranged, one end of the second fixing plate 75 is fixed to the insulating partition 73, and the other end of the second fixing plate 75 is fixed to the bottom surface of the active spring 4 by riveting.

[0079] In this embodiment, the active spring 4 is provided with a second convex bulge 42 protruding downward, and the other end of the second fixing plate 75 is provided with a third through hole 751. The second convex bulge 42 of the active spring is fitted in the third through hole 751 of the second fixing plate and fixed by riveting.

[0080] In this embodiment, one end of the second fixing piece 75 is embedded in the insulating partition by injection molding so that one end of the second fixing piece 75 is fixed to the insulating partition 73 .

[0081] A high-voltage DC relay with auxiliary contacts of the present invention adopts the method of fixing the other side of the insulating partition to the active spring by riveting through a second fixing plate, so that the auxiliary dynamic spring can move with the movement of the dynamic component and has the effect of reliable connection and effective isolation of strong and weak electricity.

[0082] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent equivalent embodiment without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high-voltage DC relay with auxiliary contacts, comprising a housing, two main lead-out terminals, an active spring and a push rod component; the two main lead-out terminals are respectively mounted on the top of the housing and their respective bottom ends are located inside the housing; the active spring is accommodated in the housing and fits under the two main lead-out terminals to achieve bridging between the two main lead-out terminals; the active spring and the push rod component are assembled together and together form a moving assembly; characterized in that: The relay further comprises two auxiliary lead-out terminals, an auxiliary dynamic spring and an insulating partition. The two auxiliary lead-out terminals are respectively mounted on the same side of the top of the housing corresponding to the connection line of the two main lead-out terminals and their respective bottoms are located inside the housing. The auxiliary dynamic spring is insulated and fixed to the moving component through the insulating partition so as to bridge the two auxiliary lead-out terminals with the movement of the moving component. The auxiliary dynamic spring comprises a connecting portion for fixing to the insulating partition, a contact portion for matching with the bottom ends of the two auxiliary lead-out terminals and a main body portion between the connecting portion and the contact portion. The contact portion is arranged in the horizontal direction. The main body and the insulating partition are both arranged vertically, and the main body is outside one side of the insulating partition, and the other side of the insulating partition is connected to the dynamic component; the insulating partition is arranged in a first vertical plane on one side of the active spring, and the auxiliary dynamic spring is arranged on the side of the insulating partition away from the active spring, the main body of the auxiliary dynamic spring is arranged in a second vertical plane, the first vertical plane is parallel to the second vertical plane, and the projection of the insulating partition in a direction perpendicular to the first vertical plane can cover the projection of the main body of the auxiliary dynamic spring in a direction perpendicular to the second vertical plane, so as to isolate the auxiliary dynamic spring from the dynamic component.

2. The high voltage DC relay with auxiliary contacts according to claim 1, characterized in that: The auxiliary dynamic spring is a U-shaped structure, the bottom side of the U-shaped structure is set as the connecting part, the two side sides of the U-shaped structure are set as the main body, the ends of the two side sides of the U-shaped structure are set as the contact part, and the connecting part is on the top and the contact part is on the bottom.

3. The high voltage DC relay with auxiliary contacts according to claim 1, characterized in that: The auxiliary dynamic spring is a U-shaped structure, the bottom side of the U-shaped structure is set as the contact part, the two side sides of the U-shaped structure are set as the main body, the ends of the two side sides of the U-shaped structure are set as the connecting part, and the connecting part is on the top and the contact part is on the bottom.

4. The high voltage DC relay with auxiliary contacts according to claim 1, characterized in that: The auxiliary dynamic spring is a mouth-shaped structure, the upper side of the mouth of the mouth-shaped structure is set as the connecting part, the two side sides of the mouth of the mouth-shaped structure are set as the main body, and the bottom side of the mouth of the mouth-shaped structure is set as the contact part.

5. The high voltage DC relay with auxiliary contacts according to claim 2, 3 or 4, characterized in that: The main body of the auxiliary dynamic spring is further provided with a bending portion protruding in a direction away from a side of the insulating partition.

6. The high voltage DC relay with auxiliary contacts according to claim 2, 3 or 4, characterized in that: The connecting portion of the auxiliary dynamic spring is embedded in the insulating spacer by injection molding so that the connecting portion of the auxiliary dynamic spring is fixed to the insulating spacer.

7. The high voltage DC relay with auxiliary contacts according to claim 6, characterized in that: The connecting portion of the auxiliary dynamic spring is bent into a horizontal shape or a vertical shape and buried in the insulating partition.

8. The high voltage DC relay with auxiliary contacts according to claim 6, characterized in that: The connecting portion of the auxiliary dynamic spring is also provided with a first through hole, so that the plastic body can enter the first through hole during injection molding, thereby increasing the connection strength between the auxiliary dynamic spring and the insulating partition.

9. The high voltage DC relay with auxiliary contacts according to claim 2, 3 or 4, characterized in that: The connecting portion of the auxiliary dynamic spring is fixed to the insulating partition by interference fit or hot riveting on one side of the insulating partition. At least one first bulge is provided on one side of the insulating partition. The connecting portion of the auxiliary dynamic spring is set to a vertical shape, and at least one second through hole is provided in the connecting portion. The second through hole of the auxiliary dynamic spring is stuck in the first bulge of the insulating partition and fixed by interference fit or hot riveting.

10. The high voltage DC relay with auxiliary contacts according to claim 1, characterized in that: The push rod component includes a U-shaped bracket, a first fixing plate and a push rod. One end of the push rod is combined with the first fixing plate to form a push rod head by injection molding. The other end of the push rod is connected to the magnetic circuit part as a tail. The two ends of the U-shaped bracket are downwardly connected to the first fixing plates extending to both sides of the push rod head. The active spring is installed in the U-shaped bracket through the main spring. One end of the main spring pushes the active spring toward the inner side of the top of the U-shaped bracket, and the other end of the main spring rests on the push rod head.

11. The high voltage DC relay with auxiliary contacts according to claim 10, characterized in that: The other side of the insulating partition is fixed to the active spring via a second fixing plate, the second fixing plate is horizontally arranged, one end of the second fixing plate is fixed to the insulating partition, and the other end of the second fixing plate is fixed to the bottom surface of the active spring by riveting.

12. The high voltage DC relay with auxiliary contacts according to claim 11, characterized in that: The active spring is provided with a second convex burl extending downward, and the other end of the second fixing plate is provided with a third through hole, and the second convex burl of the active spring is fitted in the third through hole of the second fixing plate and fixed by riveting.

13. The high voltage DC relay with auxiliary contacts according to claim 11, characterized in that: One end of the second fixing plate is embedded in the insulating partition by injection molding so that one end of the second fixing plate is fixed to the insulating partition.

14. The high voltage DC relay with auxiliary contacts according to claim 10, characterized in that: The other side of the insulating partition is formed into a whole with the plastic body part of the push rod head by integral injection molding.

15. The high voltage DC relay with auxiliary contacts according to claim 10, characterized in that: The other side of the insulating partition is fixed to the top of the U-shaped bracket through a third fixing plate, the third fixing plate is horizontally arranged, one end of the third fixing plate is fixed to the insulating partition, and the other end of the third fixing plate is fixed to the top of the U-shaped bracket by riveting.

16. The high voltage DC relay with auxiliary contacts according to claim 15, characterized in that: The other end of the third fixing plate is provided with a third convex burl protruding downward, the top of the U-shaped bracket is provided with a fourth through hole, and the third convex burl of the third fixing plate fits in the fourth through hole of the U-shaped bracket and is fixed by riveting.

17. The high voltage DC relay with auxiliary contacts according to claim 16, characterized in that: The top of the U-shaped bracket is also provided with a boss protruding upward, and the fourth through hole of the U-shaped bracket is arranged at the boss, so that the riveted part of the third convex burl of the third fixing plate makes way for the active spring.

18. The high voltage DC relay with auxiliary contacts according to claim 15, characterized in that: One end of the third fixing plate is embedded in the insulating partition by injection molding so that one end of the third fixing plate is fixed to the insulating partition.

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