Auxiliary contact assembly and relay

Abstract

The utility model relates to an auxiliary contact assembly and a relay. The relay comprises an insulating base, an auxiliary moving contact piece and an auxiliary static contact, the auxiliary moving contact piece comprises a moving contact section and a connecting section which are distributed in the first direction, the moving contact section is connected with the insulating base through the connecting section and used for making contact with the auxiliary static contact, and the size of the moving contact section in the second direction is firstly decreased and then increased in the first direction. The size of the movable contact section in the second direction is firstly reduced and then increased along the first direction, so that the movable contact section is of a structure with two wide ends and a narrow middle part in the first direction, the overall flexibility of the movable contact section can be improved, and transmission of contact stress between the auxiliary movable contact piece and the auxiliary static contact to a connecting part of the auxiliary movable contact piece and the insulating seat is slowed down; stress is prevented from being concentrated near the connecting part of the auxiliary movable contact piece and the insulating seat, so that the risk that the connecting root of the auxiliary movable contact piece and the insulating seat is broken is reduced, the auxiliary movable contact piece is prevented from being broken and losing efficacy, and the service life of the relay is prolonged.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to an auxiliary contact assembly and a relay. Background Technology

[0002] A relay is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity reaches a specified requirement.

[0003] A high-voltage DC relay is a type of relay. Some high-voltage DC relays include an auxiliary contact assembly, a main stationary contact, and a moving assembly. The auxiliary contact assembly includes an auxiliary moving contact, an auxiliary stationary contact, and an insulating base. The auxiliary stationary contact is fixed to one side of the insulating base. The auxiliary moving contact is connected to the moving assembly through the insulating base. The insulating base and the auxiliary moving contact are driven by the moving assembly, causing the auxiliary moving contact to move towards or away from the auxiliary stationary contact, thereby closing or opening the auxiliary moving contact with the auxiliary stationary contact.

[0004] In related technologies, when the auxiliary moving contact is pressed against the auxiliary stationary contact, the auxiliary moving contact is prone to breakage at the root where it connects to the insulating base. Utility Model Content

[0005] Therefore, it is necessary to provide an auxiliary contact assembly and relay to address the above problems and reduce the risk of breakage of the auxiliary moving contact.

[0006] On one hand, an auxiliary contact assembly is provided, including an insulating base, an auxiliary moving contact piece, and an auxiliary stationary contact. The auxiliary moving contact piece includes a moving contact segment and a connecting segment distributed along a first direction. The moving contact segment is connected to the insulating base through the connecting segment. The moving contact segment is used to contact the auxiliary stationary contact. The size of the moving contact segment in a second direction first decreases and then increases along the first direction. The second direction is perpendicular to the first direction.

[0007] In one embodiment, there are two movable contacts, and the connecting segment connects the two movable contacts.

[0008] In one embodiment, the movable contact segment has a first end and a second end at opposite ends in the first direction. The first end is connected to the connecting segment, and the second end is used to contact the auxiliary stationary contact. The movable contact segment has at least one notch at the portion between the first end and the second end, and the notch is recessed toward the inside of the movable contact segment.

[0009] In one embodiment, the movable contact segment has two notches located between the first end and the second end, with the two notches located on opposite sides of the movable contact segment.

[0010] In one embodiment, the two notches on the same moving contact segment are distributed sequentially along the second direction.

[0011] In one embodiment, the movable contact has a contact portion on one side in a third direction for contacting the auxiliary stationary contact, the third direction being perpendicular to the first direction and the second direction respectively, and the movable contact further includes a bent portion connecting the first end and the second end.

[0012] In one embodiment, the notch has an arc-shaped structure.

[0013] In one embodiment, the insulating base includes a base body and a protrusion disposed on one side of the base body, the movable contact segment is disposed on one side of the base body, and the connecting segment is connected to the protrusion.

[0014] In one embodiment, the connecting segment is integrally formed with the protrusion.

[0015] In one embodiment, the dimension of the connecting segment in the second direction is greater than the dimension of the moving contact segment in the second direction.

[0016] On the other hand, a relay is also provided, including the auxiliary contact assembly described above.

[0017] In one embodiment, a moving component is also included, wherein the auxiliary moving contact piece in the auxiliary contact assembly is connected to the moving component via the insulating base.

[0018] In one embodiment, the device further includes an insulating cover and a main stationary contact. The moving component is located on one side of the main stationary contact. The moving component includes an active contact and a contact support. The main stationary contact is disposed on the insulating cover. The active contact is disposed in the contact support. The auxiliary contact assembly is located on the side of the active contact facing the main stationary contact. The auxiliary stationary contact of the auxiliary contact assembly is disposed on the insulating cover. The insulating base is connected to the contact support.

[0019] In one embodiment, the device further includes an insulating cover and a main stationary contact fixed on the insulating cover. The moving assembly is located on one side of the main stationary contact. The moving assembly includes an active contact and a contact support. The active contact is disposed in the contact support. The auxiliary contact assembly is located on the side of the active contact away from the main stationary contact. The insulating base is connected to the end of the contact support away from the main stationary contact.

[0020] The aforementioned auxiliary contact assembly is configured such that the size of the moving contact segment in the second direction first decreases and then increases along the first direction, making the moving contact segment have a structure that is wide at both ends and narrow in the middle in the first direction. This can improve the overall flexibility of the moving contact segment, reduce the transmission of contact stress between the auxiliary moving contact and the auxiliary stationary contact to the connection part between the auxiliary moving contact and the insulating base, prevent stress concentration near the connection part between the auxiliary moving contact and the insulating base, thereby reducing the risk of the auxiliary moving contact breaking at the root of the connection with the insulating base, preventing the auxiliary moving contact from breaking and failing, and helping to extend the service life of the relay.

[0021] Furthermore, by setting a notch in the part of the moving contact segment located between the first end and the second end, it is beneficial to make the size of the moving contact segment in the second direction decrease first and then increase along the first direction, thereby reducing the processing difficulty of the auxiliary moving contact piece.

[0022] Furthermore, setting two notches on opposite sides of the moving contact helps to balance the stress on the moving contact and further reduce stress transmission.

[0023] Furthermore, the connecting section is connected to the protrusion, and the protrusion provides support for the auxiliary moving contact. During use, the relative position of the connecting section and the insulating base remains almost unchanged. The moving contact can move away from or closer to the base body. The protrusion protrudes from one side of the base body, so that the insulating base has a recess on one side of the protrusion. This recess provides movement space for the moving contact, so that the moving contact has sufficient elastic deformation space, and thus smoothly closes or disconnects with the auxiliary stationary contact. Attached Figure Description

[0024] Figure 1 This is a perspective view of a relay at one angle in some embodiments of this application.

[0025] Figure 2 for Figure 1 The relay shown is a cross-sectional view along the AA direction.

[0026] Figure 3 This is a perspective view of a relay after the insulating cover has been removed in some other embodiments of this application.

[0027] Figure 4 for Figure 3 The diagram shows the installation structure of the auxiliary moving contact and the insulating base in the relay.

[0028] Figure 5 This is a perspective view of a relay with its insulating cover removed, as described in some embodiments of this application.

[0029] Figure 6 for Figure 5 The diagram shows the structure of the relay's support arm, insulating base, auxiliary moving contact, and push rod.

[0030] Figure 7This is a structural diagram of the auxiliary moving contact in some embodiments of this application.

[0031] Figure 8 This is a diagram showing the installation structure of the auxiliary moving contact and the insulating base in some embodiments of this application.

[0032] In the picture:

[0033] 100. Auxiliary contact assembly; 1. Auxiliary moving contact piece; 101. Moving contact segment; 1011. Notch; 1012. First end; 1013. Bending part; 1014. Auxiliary moving contact; 1015. Second end; 102. Connecting section; 2. Insulating base; 201. Protrusion; 202. Base body; 3. Auxiliary stationary contact; 4. Insulating cover; 5. Contact bracket; 501. Fixing plate; 502. Support arm; 6. Main stationary contact; 7. Spring; 8. Spring seat; 9. Push rod; 10. Moving iron core; 11. Yoke plate; 12. Active contact. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0040] See Figure 1 , Figure 2 , Figure 3 and Figure 5 , Figure 1 A perspective view of a relay at one angle is shown in some embodiments of this application. Figure 2 It shows Figure 1 The relay shown is a cross-sectional view along the AA direction. Figure 3 A perspective view of the relay after removing the insulating cover according to other embodiments of this application is shown. Figure 5 This application provides a perspective view of a relay after the insulating cover has been removed, as described in some embodiments of the present application. The relay includes an auxiliary contact assembly 100, main stationary contacts 6, and a moving assembly. Two main stationary contacts 6 are provided. The moving assembly includes an active contact 12 and a pushing component. The two main stationary contacts 6 are respectively used to contact the active contact 12, and the active contact 12 can move closer to or further away from the main stationary contacts 6.

[0041] See Figure 4 , Figure 7 and Figure 8 , Figure 4 It shows Figure 3 The diagram shows the installation structure of the auxiliary moving contact and the insulating base in the relay. Figure 7 The present application shows a structural diagram of the auxiliary moving contact piece according to some embodiments. Figure 8 This diagram illustrates the installation structure of the auxiliary moving contact and the insulating base according to some embodiments of this application. The auxiliary contact assembly 100 includes an insulating base 2, an auxiliary moving contact 1, and an auxiliary stationary contact 3. The auxiliary stationary contact 3 is disposed on one side of the insulating base 2. The auxiliary moving contact 1 includes a moving contact segment 101 distributed along a first direction and a connecting segment 102. The moving contact segment 101 is connected to the insulating base 2 through the connecting segment 102. The moving contact segment 101 is used to contact the auxiliary stationary contact 3. The dimension of the moving contact segment 101 in a second direction first decreases and then increases along the first direction, and the second direction is perpendicular to the first direction. It should be noted that the first direction is the length direction of the auxiliary moving contact 1, i.e., the X direction in the figure, and the second direction is the width direction of the auxiliary moving contact 1, i.e., the Y direction in the figure.

[0042] In the auxiliary contact assembly 100 of this application, the size of the moving contact 101 in the second direction (i.e., the Y direction) first decreases and then increases along the first direction (i.e., the X direction), so that the moving contact 101 has a structure that is wide at both ends and narrow in the middle in the first direction. This can improve the overall flexibility of the moving contact 101, reduce the transmission of contact stress between the auxiliary moving contact 1 and the auxiliary stationary contact 3 to the connection part between the auxiliary moving contact 1 and the insulating base 2, prevent stress concentration near the connection part between the auxiliary moving contact 1 and the insulating base 2, thereby reducing the risk of the auxiliary moving contact 1 breaking at the root of the connection with the insulating base 2, avoiding failure due to breakage of the auxiliary moving contact 1, and helping to extend the service life of the relay.

[0043] In some embodiments, reference is made to Figure 7 The auxiliary moving contact 1 includes two moving contact segments 101, and a connecting segment 102 is connected between the two moving contact segments 101. The auxiliary contact assembly 100 includes two auxiliary stationary contacts 3, and the auxiliary stationary contacts 3 correspond one-to-one with the moving contact segments 101. The moving contact segments 101 are used to contact the corresponding auxiliary stationary contacts 3.

[0044] See Figure 7 and Figure 8The movable contact 101 has a first end 1012 and a second end 1015 at its two opposite ends in the first direction (i.e., the X direction). The first end 1012 is connected to the connecting section 102, and the second end 1015 is used to contact the auxiliary stationary contact 3. At least one notch 1011 is provided in the portion of the movable contact 101 between the first end 1012 and the second end 1015, and the notch 1011 is recessed towards the inside of the movable contact 101. Providing the notch 1011 in the portion of the movable contact 101 between the first end 1012 and the second end 1015 is beneficial for making the size of the movable contact 101 in the second direction decrease first and then increase along the first direction, thus reducing the processing difficulty of the auxiliary movable contact 1.

[0045] In some embodiments, see Figure 7 and Figure 8 The movable contact 101 is provided with two notches 1011 at the part between the first end 1012 and the second end 1015. The two notches 1011 are located on opposite sides of the movable contact 101. Providing two notches 1011 on opposite sides of the movable contact 101 helps to balance the stress on the movable contact 101 and further reduce stress transmission.

[0046] Preferably, the two notches 1011 on the same moving contact 101 are distributed sequentially along the second direction, so that the two notches 1011 on the same moving contact 101 are directly opposite each other along the second direction. This effectively improves the overall flexibility of the moving contact 101, thereby improving the fatigue resistance of the auxiliary moving contact 1. In other examples, the two notches 1011 on the same moving contact 101 can also be staggered.

[0047] In other embodiments, the portion of the movable contact 101 located between the first end 1012 and the second end 1015 may also be provided with one, three or four notches 1011, and there is no specific limitation on the number of notches 1011 on the same movable contact 101.

[0048] Reference Figure 7 and Figure 8 Preferably, the notch 1011 is provided with an arc-shaped structure. By providing an arc-shaped notch 1011, the stress on the auxiliary movable contact 1 near the notch 1011 is smaller during the forming or stamping process, thereby reducing the risk of breakage of the auxiliary movable contact 1 during the processing stage and facilitating the production of the auxiliary movable contact 1. In addition, since the sidewall of the arc-shaped notch 1011 has a smooth transition without sharp edges, stress concentration at the sharp edges within the notch 1011 can be avoided, which could lead to breakage of the auxiliary movable contact 1.

[0049] Of course, in actual implementation, the shape of the notch 1011 can be flexibly adjusted as needed. For example, the shape of the notch 1011 can be set as a rectangle, triangle, rhombus, trapezoid or other irregular shape. There are no specific restrictions on the shape of the notch 1011.

[0050] See Figure 4 and Figure 8 In some embodiments, the insulating base 2 includes a base body 202 and a protrusion 201 protruding from one side of the base body 202. A movable contact 101 is disposed on one side of the base body 202, and a connecting section 102 is connected to the protrusion 201. By connecting the connecting section 102 to the protrusion 201, the protrusion 201 provides support for the auxiliary movable contact 1. During use, the relative position of the connecting section 102 and the insulating base 2 remains almost unchanged, and the movable contact 101 can move away from or closer to the base body 202. The protrusion 201 protrudes from one side of the base body 202, forming a recess on one side of the protrusion 201. This recess provides movement space for the movable contact 101, allowing it sufficient elastic deformation space to smoothly close or disconnect with the auxiliary stationary contact 3.

[0051] Specifically, the connecting section 102 and the protrusion 201 are integrally formed, so that the insulating base 2 and the auxiliary moving contact 1 form an integral structure, which facilitates the assembly of the auxiliary moving contact 1 and the insulating base 2, and the auxiliary moving contact 1 is not easy to fall off the insulating base 2.

[0052] See Figure 8 In some embodiments, in order to enhance the connection strength between the auxiliary moving contact 1 and the insulating base 2, the dimension D1 of the connecting segment 102 in the second direction (i.e., the Y direction) can be set to be greater than the dimension D2 of the moving contact 101 in the second direction (i.e., the Y direction), that is: D1 > D2. This is beneficial to increase the bonding area between the connecting segment 102 and the insulating base 2 and reduce the risk of the auxiliary moving contact 1 falling off.

[0053] See Figure 4 The moving contact 101 has a contact portion on one side in the third direction for contacting the auxiliary stationary contact 3. This third direction is perpendicular to both the first and second directions. In this embodiment, the third direction is the thickness direction of the auxiliary moving contact 1, i.e. Figure 6 The Z direction in the middle. It should be noted that "the side of the moving contact 101 in the third direction" means that the moving contact 101 is located on a surface in the third direction.

[0054] In this embodiment, each of the two moving contact segments 101 has an auxiliary moving contact 1014 on its second end 1015. The moving contact segment 101 contacts the auxiliary stationary contact 3 through the auxiliary moving contact 1014. The auxiliary moving contact 1014 protrudes from the moving contact segment 101 along a third direction, that is, the contact part is the auxiliary moving contact 1014. Of course, in other embodiments, the contact part can also be a flat part or a concave part. There is no specific limitation on the structure of the contact part. Any structure that can be used to contact the auxiliary stationary contact 3 is acceptable.

[0055] See Figure 4 , Figure 7 and Figure 8 The moving contact section 101 also includes a bent portion 1013 connected between the first end 1012 and the second end 1015. The bent portion 1013 can further buffer the contact stress between the auxiliary moving contact piece 1 and the auxiliary stationary contact 3, and prevent the stress from being transmitted towards the connecting section 102, thereby further reducing the risk of the auxiliary moving contact piece 1 breaking.

[0056] In the relay of this application, see Figure 1 , Figure 2 , Figure 3 and Figure 5 In the auxiliary contact assembly 100, the auxiliary moving contact 1 is connected to the moving assembly via an insulating base 2. The auxiliary stationary contacts 3 are spaced apart and fixedly disposed on one side of the moving assembly. When the moving assembly moves, it drives the insulating base 2 and the auxiliary moving contact 1 to move, causing them to move away from or towards the auxiliary stationary contacts 3, thus closing or opening the auxiliary moving contact 1 and the auxiliary stationary contacts 3. For a relay with this structure, see [reference needed]. Figure 6 Since the size of the moving contact segment 101 of the auxiliary moving contact 1 decreases and then increases in the second direction along the first direction, the overall flexibility of the moving contact segment 101 is good, which reduces the risk of the auxiliary moving contact 1 breaking at the connection root with the insulating base 2, thus helping to extend the service life of the relay.

[0057] The relay also includes an insulating cover 4 and a yoke plate 11. The insulating cover 4 is disposed on the yoke plate 11, and a cavity exists between the insulating cover 4 and the yoke plate 11. The moving component includes an active contact 12, a contact bracket 5, and a pushing component. The main stationary contact 6 is fixed on the insulating cover 4. The active contact 12, the insulating base 2, the auxiliary moving contact piece 1, and the contact bracket 5 are all disposed in the cavity. The moving component is located on one side of the main stationary contact 6, and the active contact 12 is disposed in the contact bracket 5. In this embodiment, the contact bracket 5 has a U-shaped structure. The contact bracket 5 includes a fixed plate 501 and two support arms 502. The two support arms 502 are respectively connected to opposite ends of the fixed plate 501. The active contact 12 is disposed on the side of the fixed plate 501 away from the main stationary contact 6, and the active contact 12 is located between the two support arms 502.

[0058] Relays in some embodiments, see Figures 1 to 3 The auxiliary contact assembly 100 is located on the side of the active contact 12 facing the main stationary contact 6. The auxiliary stationary contact 3 of the auxiliary contact assembly 100 is disposed on the insulating cover 4, and the insulating base 2 is connected to the contact support 5. In this embodiment, the insulating base 2 is connected to the side of the fixing plate 501 in the contact support 5 away from the active contact 12. The pushing component in this embodiment includes a push rod 9, a moving iron core 10, a spring 7, and a spring seat 8. The moving iron core 10 is located on the side of the yoke plate 11 facing away from the insulating cover 4, and can move towards or away from the yoke plate 11. A coil is wound around the outside of the moving iron core 10. The spring seat 8 is an insulating component and is located on the side of the yoke plate 11 facing the insulating cover 4. One end of the push rod 9 is connected to the moving iron core 10, and the other end passes through the yoke plate 11 and is connected to the spring seat 8. The spring 7 is located between the two support arms 502, and the opposite ends of the spring 7 are respectively connected to the active contact 12 and the spring seat 8. The ends of the two support arms 502 away from the fixed plate 501 are both connected to the spring seat 8. The auxiliary stationary contact 3 and the main stationary contact 6 are fixed to the same end of the insulating cover 4, and the yoke plate 11 and the auxiliary stationary contact 3 or the main stationary contact 6 are respectively located at opposite ends of the insulating cover 4. When the coil on the moving iron core 10 is energized, the moving iron core 10 becomes magnetic. Under the action of magnetic force, the moving iron core 10 moves toward the yoke plate 11, causing the push rod 9 to move toward the main stationary contact 6. The movement of the push rod 9 causes the spring seat 8, the contact support 5, and the active contact 12 to move toward the main stationary contact 6. Since the insulating seat 2 is mounted on the fixed plate 501, when the contact support 5 moves, it also causes the insulating seat 2 and the auxiliary moving contact 1 to move, thus closing the auxiliary moving contact 1 and the auxiliary stationary contact 3. When the coil on the moving iron core 10 is de-energized, the magnetism of the moving iron core 10 disappears, and the push rod 9 causes the spring seat 8 and the contact support 5 to reset, thereby resetting the insulating seat 2, the auxiliary moving contact 1, and the active contact 12, thus separating the auxiliary moving contact 1 from the auxiliary stationary contact 3.

[0059] In other embodiments, see Figure 5 and Figure 6The auxiliary contact assembly 100 is located on the side of the active contact 12 away from the main stationary contact 6. The insulating base 2 is connected to the end of the contact support 5 away from the main stationary contact 6. The auxiliary stationary contact 3 is at least partially located between the main stationary contact 6 and the active contact 12. In this embodiment, the auxiliary contact assembly 100 is located on the side of the active contact 12 away from the fixing plate 501. The ends of the two support arms 502 away from the fixing plate 501 are both connected to the insulating base 2 of the auxiliary contact assembly 100. In this embodiment, one end of the auxiliary stationary contact 3 is fixed on the yoke plate 11, and the other end is located between the active contact 12 and the auxiliary moving contact piece 1. Of course, in other embodiments, one end of the auxiliary stationary contact 3 can also be fixed on the insulating cover 4. The pushing component includes a push rod 9, a moving iron core 10, and a spring 7 located between two support arms 502. The spring 7 is connected to the active contact 12 and the insulating seat 2, respectively. In this embodiment, the insulating seat 2 is located on the side of the yoke plate 11 facing the insulating cover 4, and the insulating seat 2 can move relative to the yoke plate 11. The moving iron core 10 is located on the side of the yoke plate 11 away from the insulating cover 4, and the moving iron core 10 can move towards or away from the yoke plate 11. A coil is wound around the outside of the moving iron core 10. One end of the push rod 9 is connected to the moving iron core 10, and the other end passes through the yoke plate and is connected to the insulating seat 2. The spring 7 is located between the two support arms 502, and the opposite ends of the spring 7 are connected to the active contact 12 and the insulating seat 2, respectively. The ends of the two support arms 502 away from the fixed plate 501 are both connected to the insulating seat 2. The relay in this embodiment has a basically the same structure as the relay in the previous embodiment, except that the insulating base 2 replaces the spring base in this embodiment. The insulating base 2 provides support for the auxiliary moving contact 1, the spring 7, and the contact support 5. When the push rod 9 moves, it drives the insulating base 2 and the auxiliary moving contact 1 to move, causing the auxiliary moving contact 1 and the auxiliary stationary contact 3 to close or open at the end away from the yoke plate 11. Furthermore, the movement of the insulating base 2 also drives the contact support 5 and the spring 7 to move. The working principle of the relay in this embodiment is basically the same as that in the previous embodiment, and will not be repeated here.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An auxiliary contact assembly, comprising: The auxiliary contact assembly comprises an insulating base, an auxiliary movable contact and an auxiliary stationary contact, the auxiliary movable contact comprises movable contact segments and a connecting segment distributed along a first direction, the movable contact segments are connected with the insulating base through the connecting segment, the movable contact segments are used to contact with the auxiliary stationary contact, the size of the movable contact segments in a second direction decreases first and then increases along the first direction, the second direction is perpendicular to the first direction.

2. The auxiliary contact assembly of claim 1, wherein, The movable contact segments are two, and the connecting segment is connected between the two movable contact segments.

3. The auxiliary contact assembly of claim 1, wherein, The movable contact segments have a first end and a second end at opposite ends in the first direction, the first end is connected with the connecting segment, the second end is used to contact with the auxiliary stationary contact, at least one notch is arranged at a position between the first end and the second end of the movable contact segments, and the notch is recessed towards the inner side of the movable contact segments.

4. The auxiliary contact assembly of claim 3, wherein, The movable contact segments have two notches at a position between the first end and the second end, and the two notches are respectively located at opposite sides of the movable contact segments.

5. The auxiliary contact assembly of claim 4, wherein, The two notches on the same movable contact segment are sequentially distributed along the second direction.

6. The auxiliary contact assembly of claim 3, wherein, The movable contact segments have a contact part on one side in a third direction for contacting with the auxiliary stationary contact, the third direction is perpendicular to the first direction and the second direction, and the movable contact segments further comprise a bending part connected between the first end and the second end.

7. The auxiliary contact assembly of any of claims 3-6, wherein, The notch has an arc structure.

8. The auxiliary contact assembly of claim 1, wherein, The insulating base comprises a base body and a protruding part protruding from one side of the base body, the movable contact segments are arranged on one side of the base body, and the connecting segment is connected with the protruding part.

9. The auxiliary contact assembly of claim 8, wherein, The connecting segment is integrally formed with the protruding part.

10. The auxiliary contact assembly of claim 1, wherein, The size of the connecting segment in the second direction is greater than the size of the movable contact segments in the second direction.

11. A relay characterized by comprising: The auxiliary contact assembly comprises the auxiliary contact assembly of any one of claims 1-10.

12. The relay of claim 11, wherein, The auxiliary contact assembly further comprises a movable assembly, and the auxiliary movable contact in the auxiliary contact assembly is connected with the movable assembly through the insulating base.

13. The relay of claim 12, wherein, The auxiliary contact assembly further comprises an insulating cover and a main stationary contact, the movable assembly comprises a main movable contact and a contact support, the main stationary contact is arranged on the insulating cover, the main movable contact is arranged in the contact support, the auxiliary contact assembly is located on a side of the main movable contact facing the main stationary contact, the auxiliary stationary contact of the auxiliary contact assembly is arranged on the insulating cover, and the insulating base is connected with the contact support.

14. The relay of claim 12, wherein, The auxiliary contact assembly further comprises an insulating cover and a main stationary contact fixed on the insulating cover, the movable assembly comprises a main movable contact and a contact support, the main movable contact is arranged in the contact support, the auxiliary contact assembly is located on a side of the main movable contact away from the main stationary contact, and the insulating base is connected with an end of the contact support away from the main stationary contact.

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