A moving spring assembly and a relay

Abstract

The utility model discloses a kind of moving spring assembly and relay, including moving spring leaf body and lead-out sheet, moving spring leaf body includes main body section, the one end of main body section is equipped with connecting section, the other end is equipped with contact point installation section, contact point installation section is installed with moving contact, lead-out sheet is oppositely arranged with main body section, lead-out sheet has connecting end and lead-out end, moving spring leaf body is connected with the connecting end of lead-out sheet by connecting section to make moving spring leaf body and lead-out sheet connection form backfolding structure, the lead-out end of lead-out sheet is provided with lead, and the closing action direction of moving spring leaf body is configured as the direction of swing away from lead-out sheet.This utility model can generate electromagnetic force between main body section and lead-out sheet for resisting electric repulsion under the closed state of moving spring assembly and static spring assembly, solve the problem that contact is easy to bounce back, so as to avoid the risk of arc produced by moving contact and static contact forming break in short-circuit moment.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a moving spring assembly and a relay. Background Technology

[0002] When a large current (short-circuit current) passes through the contact components of a relay, a strong electro-repulsive force will be generated at the contact circuit. This electro-repulsive force may cause the moving contact to spring away, causing it to open when it should not, thus resulting in a malfunction of the moving contact. More seriously, the arc generated when the moving contact springs away may burn out the relay. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a moving spring assembly. When a short-circuit current passes through the moving spring assembly, an electromagnetic force is generated between the lead-out piece and the main body of the moving spring body to resist the electro-repulsive force between the contacts.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A movable spring assembly includes a movable spring body and a lead-out piece. The movable spring body includes a main body segment, one end of which is provided with a connecting segment, and the other end is provided with a contact mounting segment. A movable contact is mounted on the contact mounting segment. The lead-out piece is disposed opposite to the main body segment and has a connecting end and a lead-out end. The movable spring body is connected to the connecting end of the lead-out piece through the connecting segment, thereby connecting the movable spring body and the lead-out piece to form a folded structure. The lead-out end of the lead-out piece is provided with a pin, and the closing action direction of the movable spring body is configured to deflect away from the lead-out piece.

[0005] Furthermore, the connecting end and the lead-out end are formed at both ends of the lead-out piece, the lead-out piece starts from the connecting segment and extends in the length direction of the main body segment, and the extension length of the lead-out piece is configured to be greater than 1 / 2 of the length of the main body segment.

[0006] Furthermore, the extended end of the lead-out piece is configured to be close to the connection point between the main body segment and the contact mounting segment.

[0007] Furthermore, point A is defined as the connection point between the main body segment and the contact mounting segment, and point B is defined as the position corresponding to the extension end of the main body segment and the lead-out piece. A card slot for connecting with the relay push card is provided between points A and B on the main body segment.

[0008] Furthermore, an outward folding structure is provided between the main body section and the connecting section. The outward folding structure keeps the main body section and the lead-out piece apart. When the moving spring assembly and the stationary spring assembly of the relay are in the open state, the main body section is configured to be close to the lead-out piece with a gap and remain parallel or approximately parallel. When the moving spring assembly and the stationary spring assembly are in the closed state, the main body section is configured to be tilted relative to the lead-out piece. This allows an electromagnetic force to be generated between the main body section and the lead-out piece when a short-circuit current passes through them, which increases the contact pressure to resist the electro-repulsive force between the contacts.

[0009] Furthermore, the contact mounting section is configured to bend relative to the main body section toward the stationary spring assembly away from the relay, in order to increase the breaking gap between the moving contact of the moving spring assembly and the stationary contact of the stationary spring assembly.

[0010] Furthermore, the contact mounting section includes a first bent section connected to the free end of the main body section and a second bent section connected to the end of the first bent section. The first bent section is configured to bend relative to the main body section toward the side away from the stationary spring assembly, and the second bent section is configured to bend relative to the first bent section toward the side closer to the stationary spring assembly. The moving contact is mounted on the second bent section.

[0011] Furthermore, the bending angle of the first bending segment relative to the main body segment is defined as α1, and the bending angle of the second bending segment relative to the first bending segment is defined as α2, where α1 > α2.

[0012] Furthermore, α1 = 10°~40°, α2 = 5°~30°.

[0013] Based on the same inventive concept, this utility model also provides a relay, including a stationary spring assembly and any of the above-described moving spring assemblies. The stationary spring assembly and the moving spring assembly are arranged correspondingly. When the moving spring assembly and the stationary spring assembly form a closed state, the main body segment swings away from the lead plate and thus tilts relative to the lead plate. This causes the current direction of the main body segment and the lead plate to be opposite when a short-circuit current passes through the main body segment and the lead plate, and an electromagnetic force can be generated between the main body segment and the lead plate to increase the contact pressure and resist the electro-repulsive force between the contacts.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] In the moving spring assembly and relay described in this utility model, since the lead-out piece is arranged side by side with the main body in the same horizontal direction and the moving spring body and the lead-out piece are connected to form a folded structure, the moving spring body in the moving spring assembly will tilt relative to the lead-out piece after swaying and will contact the corresponding stationary spring assembly to conduct. When conducting, the current flowing through the main body of the lead-out piece is in the opposite direction and has a certain angle. Therefore, an electromagnetic force can be generated between the main body and the lead-out piece to increase the contact pressure to resist the electro-repulsive force between the contacts, solving the problem of easy contact bounce, and avoiding the risk of arcing caused by the moving contact and stationary contact breaking apart at the moment of short circuit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the moving spring body according to an embodiment of the present invention.

[0017] Figure 2 yes Figure 1 A magnified view of section C in the image.

[0018] Figure 3 This is a side view of the structure of the moving spring assembly according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the assembly structure of the moving spring assembly on the relay base according to an embodiment of the present invention (contact disconnection state).

[0020] Figure 5 This is a schematic diagram of the internal structure of the relay according to an embodiment of the present invention.

[0021] Figure 6 yes Figure 5 A magnified view of section D in the image.

[0022] Figure 7 This is a schematic diagram of the assembly structure of the moving spring assembly on the relay base (contact closed state) according to an embodiment of this utility model.

[0023] Label Explanation:

[0024] 1. Moving spring body, 2. Lead-out piece, 3. Push clip, 4. Stationary spring assembly, 11. Main body section, 12. Connecting section, 13. Contact mounting section, 14. Moving contact, 15. Outward folding structure, 21. Pin, 111. Snap-in slot, 131. First bending section, 132. Second bending section. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0027] Please refer to the appendix. Figure 1 To be continued Figure 7 An embodiment of this utility model provides a moving spring assembly, including a moving spring body 1 and a lead-out piece 2. The moving spring body 1 includes a main body segment 11, one end of which is provided with a connecting segment 12, and the other end is provided with a contact mounting segment 13. A moving contact 14 is mounted on the contact mounting segment 13. The lead-out piece 2 is disposed opposite to the main body segment 11 and has a connecting end and a lead-out end. The moving spring body 1 is connected to the connecting end of the lead-out piece 2 through the connecting segment 12, thereby connecting the moving spring body 1 and the lead-out piece 2 to form a folded structure. The lead-out end of the lead-out piece 2 is provided with a pin 21, and the closing action direction of the moving spring body 1 is configured to deflect away from the lead-out piece 2. It is understood that in this embodiment, since the lead-out piece 2 is arranged side by side with the main body section 11 in the same horizontal direction and the moving spring body 1 and the lead-out piece 2 are connected to form a folded structure, the moving spring body 1 in the moving spring assembly will tilt relative to the lead-out piece 2 after it wobbles and will contact and conduct with the corresponding stationary spring assembly 4. When conducting, the current flowing through the main body section 11 of the lead-out piece 2 is in opposite directions and has a certain angle. Therefore, an electromagnetic force can be generated between the main body section 11 and the lead-out piece 2 to increase the contact pressure to resist the electric repulsion between the contacts, solve the problem of easy contact bounce, and avoid the risk of arcing caused by the moving contact 14 and the stationary contact breaking apart at the moment of short circuit.

[0028] Please refer to the appendix. Figure 1 To be continued Figure 7In one preferred embodiment, the connecting segment 12 is connected to one end of the lead-out piece 2, and the other end of the lead-out piece 2 is provided with a pin 21. An outward folding structure 15 is provided between the main body segment 11 and the connecting segment 12, which keeps the main body segment 11 and the lead-out piece 2 at a distance. When the moving spring assembly and the stationary spring assembly 4 of the relay are in the open state, the main body segment 11 is configured to be close to the lead-out piece 2 with a gap and remain parallel or approximately parallel. When the moving spring assembly and the stationary spring assembly 4 are in the closed state, the main body segment 11 is configured to be tilted relative to the lead-out piece 2, so that when a short-circuit current passes through the main body segment 11 and the lead-out piece 2, an electromagnetic force can be generated between the main body segment 11 and the lead-out piece 2 to increase the contact pressure and resist the electro-repulsive force between the contacts. It is understood that in this embodiment, because the outward folding structure 15 (folding outwards towards the side away from the lead-out piece 2) allows the main body segment 11 and the lead-out piece 2 to maintain a gap, after the moving spring body 1 returns to its original position, the moving spring body 1 does not directly contact the lead-out piece 2 (a reset positioning structure that cooperates with the moving contact of the moving spring assembly is provided in the relay to limit the reset movement limit position of the moving spring body 1), effectively avoiding the risk of bending or even breaking of the main body segment 11 and the end of the lead-out piece 2 due to frequent contact, thus improving the structural stability of the moving spring body 1. In addition, since the moving spring assembly and the stationary spring assembly 4 of the relay are in a disconnected state, the main body segment 11 is configured to be close to the lead-out piece 2 with a gap and remain parallel or approximately parallel. In this way, the installation space of the moving spring assembly on the relay base can be reduced to a certain extent, which is beneficial to realizing the miniaturization design of the relay.

[0029] Please refer to the appendix. Figure 1 To be continued Figure 5 In one preferred embodiment, the connection point between the main body segment 11 and the contact mounting segment 13 is defined as point A, and the position corresponding to the extension end of the lead-out piece 2 on the main body segment 11 is defined as point B. A card slot 111 for connecting with the push card 3 of the relay is provided at the position between points A and B on the main body segment 11.

[0030] Please refer to the appendix. Figure 1 To be continued Figure 7In one preferred embodiment, the contact mounting section 13 is configured to bend relative to the main body section 11 toward the direction away from the relay's stationary spring assembly 4, thereby increasing the breaking gap between the moving contact 14 of the moving spring assembly and the stationary contact of the stationary spring assembly 4, and improving the high-voltage withstand performance of the relay. A connecting end and a lead-out end are formed at both ends of the lead-out piece 2, which extends from the connecting section 12 along the length of the main body section 11, and the extension length of the lead-out piece 2 is configured to be greater than half the length of the main body section 11. The extension end of the lead-out piece 2 is configured to be close to the connection point between the main body section 11 and the contact mounting section 13. This configuration provides sufficient space for the contact mounting section 13 to bend toward the stationary spring assembly 4 away from the relay. Furthermore, the outward folding structure 15 allows the moving contact 14 to make frontal contact with the stationary contact of the stationary spring assembly 4, avoiding contact on the tilted side.

[0031] Please refer to the appendix. Figure 1 To be continued Figure 7 In one preferred embodiment, the contact mounting section 13 includes a first bent section 131 connected to the free end of the main body section 11 and a second bent section 132 connected to the end of the first bent section 131. The first bent section 131 is configured to be bent relative to the main body section 11 toward the side away from the stationary spring assembly 4, and the second bent section 132 is configured to be bent relative to the first bent section 131 toward the side closer to the stationary spring assembly 4. The moving contact 14 is mounted on the second bent section 132. The bending angle of the first bent section 131 relative to the main body section 11 is defined as α1, and the bending angle of the second bent section 132 relative to the first bent section 131 is defined as α2, where α1 > α2. α1 = 10° to 40°, α2 = 5° to 30°.

[0032] Please refer to the appendix. Figure 1 To be continued Figure 7 An embodiment of this utility model also provides a relay, including a stationary spring assembly 4 and any of the moving spring assemblies described above. The stationary spring assembly 4 and the moving spring assembly are correspondingly arranged. When the moving spring assembly and the stationary spring assembly 4 are in a closed state, the main body segment 11 is tilted away from the lead-out piece 2 and thus tilted relative to the lead-out piece 2. This makes the current direction of the main body segment 11 and the lead-out piece 2 opposite when a short-circuit current passes through the main body segment 11 and the lead-out piece 2, and an electromagnetic force can be generated between the main body segment 11 and the lead-out piece 2 to increase the contact pressure and resist the electro-repulsive force between the contacts.

[0033] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A movable spring assembly, characterized in that: The device includes a movable spring body (1) and a lead-out piece (2). The movable spring body (1) includes a main body section (11). One end of the main body section (11) is provided with a connecting section (12), and the other end is provided with a contact mounting section (13). A movable contact (14) is mounted on the contact mounting section (13). The lead-out piece (2) is arranged opposite to the main body section (11). The lead-out piece (2) has a connecting end and a lead-out end. The movable spring body (1) is connected to the connecting end of the lead-out piece (2) through the connecting section (12), thereby connecting the movable spring body (1) and the lead-out piece (2) to form a folded structure. The lead-out end of the lead-out piece (2) is provided with a pin (21), and the closing action direction of the movable spring body (1) is configured to deflect away from the lead-out piece (2).

2. The moving spring assembly according to claim 1, characterized in that: The connecting end and the lead-out end are formed at both ends of the lead-out piece (2). The lead-out piece (2) starts from the connecting segment (12) and extends in the length direction of the main body segment (11). The extension length of the lead-out piece (2) is configured to be greater than 1 / 2 of the length of the main body segment (11).

3. The moving spring assembly according to claim 2, characterized in that: The extended end of the lead-out piece (2) is configured to be close to the connection point between the main body section (11) and the contact mounting section (13).

4. The moving spring assembly according to claim 3, characterized in that: Point A is defined as the connection point between the main body segment (11) and the contact mounting segment (13), and point B is defined as the position corresponding to the extension end of the main body segment (11) and the lead-out piece (2). A card slot (111) for connecting with the relay push card (3) is provided between points A and B of the main body segment (11).

5. The moving spring assembly according to claim 1, characterized in that: An outward folding structure (15) is provided between the main body section (11) and the connecting section (12). The outward folding structure (15) keeps the main body section (11) and the lead-out piece (2) apart. When the moving spring assembly and the stationary spring assembly (4) of the relay are in the open state, the main body section (11) is configured to be close to the lead-out piece (2) with a gap and to remain parallel or approximately parallel. When the moving spring assembly and the stationary spring assembly (4) are in the closed state, the main body section (11) is configured to be tilted relative to the lead-out piece (2). When a short-circuit current passes through the main body section (11) and the lead-out piece (2), an electromagnetic force can be generated between the main body section (11) and the lead-out piece (2) to increase the contact pressure and resist the electro-repulsive force between the contacts.

6. The moving spring assembly according to any one of claims 1 to 5, characterized in that: The contact mounting section (13) is configured to bend relative to the main body section (11) toward the stationary spring assembly (4) away from the relay, so as to increase the breaking gap between the moving contact (14) of the moving spring assembly and the stationary contact of the stationary spring assembly (4).

7. The moving spring assembly according to claim 6, characterized in that: The contact mounting section (13) includes a first bent section (131) connected to the free end of the main body section (11) and a second bent section (132) connected to the end of the first bent section (131). The first bent section (131) is configured to be bent relative to the main body section (11) toward the side away from the stationary spring assembly (4), and the second bent section (132) is configured to be bent relative to the first bent section (131) toward the side closer to the stationary spring assembly (4). The moving contact (14) is mounted on the second bent section (132).

8. The moving spring assembly according to claim 7, characterized in that: The bending angle of the first bending segment (131) relative to the main body segment (11) is defined as α1, and the bending angle of the second bending segment (132) relative to the first bending segment (131) is defined as α2, where α1 > α2.

9. The moving spring assembly according to claim 7, characterized in that: α1＝10°～40°，α2＝5°～30°。 10. A relay, characterized in that: The assembly includes a stationary spring assembly (4) and a moving spring assembly as described in any one of claims 1 to 9. The stationary spring assembly (4) is provided corresponding to the moving spring assembly. When the moving spring assembly and the stationary spring assembly (4) are in a closed state, the main body section (11) is tilted away from the lead-out piece (2) and tilted relative to the lead-out piece (2). When a short-circuit current passes through the main body section (11) and the lead-out piece (2), the current directions of the main body section (11) and the lead-out piece (2) are opposite, and an electromagnetic force can be generated between the main body section (11) and the lead-out piece (2) to increase the contact pressure and resist the electro-repulsive force between the contacts.

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