Load terminal lead-out structure and relay

Abstract

This utility model discloses a load terminal lead-out structure and a relay, including a lead-out piece and a bridging current-carrying element. The lead-out piece includes a first lead-out portion, a second lead-out portion, and a third lead-out portion connected in sequence. The second lead-out portion has a first clearance notch for at least avoiding the side wall of the relay base. The bridging current-carrying element is disposed on the current-carrying portion of the second lead-out portion and located on one side of the thickness direction of the second lead-out portion. The bridging current-carrying element and the second lead-out portion are configured to be connected by at least two connection points, with the two connection points furthest apart located on opposite sides of the width direction of the first clearance notch. By configuring the two connection points on opposite sides of the width direction of the first clearance notch, this utility model makes the effective current-carrying area of ​​the bridging current-carrying element larger, and increases the current-carrying cross-sectional area of ​​the second lead-out portion through the bridging current-carrying element, thereby helping to reduce temperature rise.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a load terminal lead-out structure and a relay. Background Technology

[0002] A current magnetic latching relay includes a lead-out structure and a base. The lead-out structure needs to extend from the side wall of the base. Therefore, the lead-out structure usually needs to be provided with a clearance notch to avoid the side wall of the base. This results in a small current-carrying cross-section of the lead-out structure at the clearance notch, leading to severe temperature rise. Existing technologies have proposed methods to improve current carrying capacity and reduce temperature rise by fixing auxiliary components to the reduced-area current-carrying portion, but these methods are not very effective at reducing temperature rise. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a load terminal lead-out structure, which mainly solves the technical problem of poor cooling and heating effects of existing lead-out components.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A load terminal lead-out structure for use in a relay includes a lead-out piece and a bridging current-carrying member. The lead-out piece includes a first lead-out portion, a second lead-out portion, and a third lead-out portion connected in sequence. The second lead-out portion has a first clearance notch for at least avoiding the side wall of the relay base. The bridging current-carrying member is disposed on the current-carrying portion of the second lead-out portion and is located on one side of the thickness direction of the second lead-out portion. The bridging current-carrying member and the second lead-out portion are configured to be bridged and connected through at least two connection positions, and the two connection positions with the furthest distance are located on both sides of the width direction of the first clearance notch.

[0006] Furthermore, the bridging current-carrying component and the second lead-out portion are configured to be connected by two connection points. The distance between the two connection points is defined as D, and the width of the first clearance notch is L1. Then, D is greater than L1.

[0007] Furthermore, the bridging current-carrying component is made from the cutting waste generated during the processing of the first clearance notch; the width of the bridging current-carrying component is greater than the width of the first clearance notch;

[0008] Furthermore, a second clearance notch is provided on the second lead-out portion. The second clearance notch is adjacent to and connected to the first clearance notch. The second clearance notch can also be used to avoid the drive components inside the relay. The bridging current-carrying element is made from the cutting waste generated when processing the first clearance notch and the second clearance notch.

[0009] Furthermore, a connection position is formed by riveting or welding, thereby enabling the bridging current-carrying component to be fixedly connected to the side of the second lead-out portion in the thickness direction.

[0010] Furthermore, when a connection position for fixing the bridging current-carrying component is formed by riveting, a riveting protrusion structure is provided in one of the second lead-out portion and the bridging current-carrying component, and a riveting hole structure adapted to the riveting protrusion structure is provided in the other. The riveting protrusion structure and the corresponding riveting hole structure are riveted together to form a connection position for fixing the bridging current-carrying component to the second lead-out portion.

[0011] Furthermore, a riveting protrusion is provided on the second lead-out part, and a riveting hole is provided on the bridging current-carrying component. The riveting protrusion and the corresponding riveting hole are riveted together to form a connection position.

[0012] Furthermore, the rivet holes are countersunk holes.

[0013] Furthermore, when a connection position for fixing the bridging current-carrying component is formed by riveting, a riveting hole structure is provided on both the second lead-out portion and the bridging current-carrying component, and a connection position for fixing the bridging current-carrying component to the second lead-out portion is formed by riveting the rivets with the corresponding riveting holes on the second lead-out portion and the bridging current-carrying component.

[0014] Furthermore, the height of the portion of the second outlet used for current carrying is defined as H1, and the height of the first clearance gap is defined as H2, then H2 is configured to be greater than H1; the height of the second clearance gap is defined as H3, then H3 is configured to be less than H2.

[0015] Based on the same inventive concept, this utility model also provides a relay, including a relay base and any of the above-described load terminal lead-out structures, wherein a base clearance groove for avoiding the second lead-out portion is provided on the side wall of the relay base; the relay includes a moving spring assembly with a moving contact, the load terminal lead-out structure is a stationary spring lead-out piece, and the load terminal lead-out structure is provided with a stationary contact corresponding to the moving contact.

[0016] Furthermore, the moving spring assembly includes a moving spring with a moving contact and a moving spring lead-out piece, wherein the moving spring lead-out piece is formed by the load terminal lead-out structure.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] Through experimentation and research, the inventors discovered that the reason why the existing technology of using fixed auxiliary components to increase the current-carrying area of ​​the lead-out piece and reduce the temperature rise is not effective is that the position where the auxiliary component is fixed to the lead-out piece is within the area on the lead-out piece where the current-carrying area needs to be increased. After adding the auxiliary component, the effective current-carrying area is between the position where the auxiliary component is fixed to the lead-out piece. When this effective current-carrying area cannot cover all the areas where the current-carrying area needs to be increased, the addition of the auxiliary component still has an insignificant effect on reducing the temperature rise of the lead-out piece and is difficult to meet the actual needs. In the load terminal lead-out structure described in this utility model, because a first clearance notch is provided on the second lead-out portion to avoid the side wall of the relay base, its current-carrying cross-sectional area during operation is reduced compared to the remaining portion without the clearance notch, resulting in a large temperature rise. By bridging the current-carrying component to the second lead-out portion, it is beneficial to increase the current-carrying cross-sectional area at the second lead-out portion, thus improving the problem of large temperature rise. Furthermore, since the portion between the two connection positions of the bridging current-carrying component is the effective current-carrying area, and the portion of the second lead-out portion corresponding to the first clearance notch is the minimum current-carrying cross-sectional area, by covering the entire minimum current-carrying cross-sectional area, the problem of insufficient current-carrying effect in the minimum current-carrying cross-sectional area on the second lead-out portion can be improved as much as possible. This results in a larger effective current-carrying area of ​​the bridging current-carrying component, and by increasing the current-carrying cross-sectional area of ​​the second lead-out portion through the bridging current-carrying component, it is even more beneficial to reduce the temperature rise. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the lead sheet according to an embodiment of the present invention.

[0020] Figure 2 This is a front view of the lead-out sheet according to an embodiment of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the bridging current-carrying component according to an embodiment of the present utility model.

[0022] Figure 4 This is a schematic diagram of the assembly structure of the lead-out piece and the bridging current-carrying component according to an embodiment of the present invention.

[0023] Figure 5 This is a three-dimensional structural diagram of the relay base according to an embodiment of the present utility model.

[0024] Figure 6 This is a schematic diagram of the assembly structure of the relay base and the load terminal lead-out structure according to an embodiment of the present invention.

[0025] Label Explanation:

[0026] 1. Lead-out piece, 2. Bridging current-carrying component, 3. Relay base, 11. First lead-out part, 12. Second lead-out part, 13. Third lead-out part, 21. Riveting hole, 31. Base clearance groove, 121. First clearance notch, 122. Second clearance notch, 123. Riveting protrusion. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] 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.

[0029] Please refer to the appendix. Figure 1 To be continued Figure 6One embodiment of this utility model provides a load terminal lead-out structure applied to a relay, including a lead-out piece 1 and a bridging current-carrying member 2. The lead-out piece 1 includes a first lead-out portion 11, a second lead-out portion 12 and a third lead-out portion 13 connected in sequence. The second lead-out portion 12 has a first clearance notch 121 for at least avoiding the side wall of the relay base 3. The bridging current-carrying member 2 is disposed on the current-carrying portion of the second lead-out portion 12 and is located on one side of the thickness direction of the second lead-out portion 12. The bridging current-carrying member 2 and the second lead-out portion 12 are configured to be bridged and connected through at least two connection positions, and the two connection positions with the farthest interval are located on both sides of the width direction of the first clearance notch 121. In one preferred embodiment, the bridging current-carrying component 2 and the second lead-out portion 12 are preferably connected by two connection points. The distance between the two connection points is defined as D, and the width of the first clearance notch 121 is L1. Then D is greater than L1. The bridging current-carrying component 2 is made from the cutting waste generated when processing the first clearance notch 121. Preferably, the width of the bridging current-carrying component 2 is greater than the width of the first clearance notch 121. By making the bridging current-carrying component 2 longer, it can be better ensured that the current-carrying area is greater than the width of the first clearance notch 121, so as to better improve the current-carrying cross-section and reduce the temperature rise. It is understandable that in this embodiment, since the first clearance notch 121 is opened on the second lead-out portion 12 to avoid the side wall of the relay base 3, its current-carrying cross-sectional area during operation is reduced compared to the remaining part without the clearance notch, which leads to the problem of temperature rise. By bridging the current-carrying member 2 to the second lead-out portion 12, it is beneficial to increase the current-carrying cross-sectional area at the position of the second lead-out portion 12 and improve the problem of large temperature rise. Furthermore, since the part between the two connection positions of the bridging current-carrying member 2 is the effective current-carrying area, and the part of the second lead-out portion 12 corresponding to the first clearance notch 121 is the minimum current-carrying cross-sectional area, by covering the entire minimum current-carrying cross-sectional area, the problem of insufficient current-carrying effect of the minimum current-carrying cross-sectional area on the second lead-out portion 12 can be improved as much as possible, making the effective current-carrying area of ​​the bridging current-carrying member larger, and by increasing the current-carrying cross-sectional area of ​​the second lead-out portion 12 through the bridging current-carrying member 2, it is more conducive to reducing temperature rise.

[0030] Please refer to the appendix. Figure 1 To be continued Figure 4In one preferred embodiment, a second clearance notch 122 is also provided on the second lead-out portion 12. The second clearance notch 122 is adjacent to and communicates with the first clearance notch 121. The second clearance notch 122 can also be used to avoid the drive component (which can be the push card structure of the relay) inside the relay. Preferably, the bridging current-carrying element 2 is made from the cutting waste generated when processing the first clearance notch 121 and the second clearance notch 122. It can be understood that in this embodiment, by processing the cutting waste generated when cutting the first clearance notch 121 and the second clearance notch 122 into the bridging current-carrying element 2, waste can be utilized and production costs can be reduced.

[0031] Please refer to the appendix. Figure 1 To be continued Figure 4 In one preferred embodiment, the connection position is formed by riveting or welding, thereby fixing the bridging current-carrying component 2 to the side surface in the thickness direction of the second lead-out portion 12. When the connection position for fixing the bridging current-carrying component 2 is formed by riveting, a riveting protrusion structure is provided in one of the second lead-out portion 12 and the bridging current-carrying component 2, and a riveting hole structure adapted to the riveting protrusion structure is provided in the other. The riveting protrusion structure and the corresponding riveting hole structure are riveted together to form the connection position for fixing the bridging current-carrying component 2 to the second lead-out portion 12. In one preferred embodiment, preferably, a riveting protrusion 123 is provided on the second lead-out portion 12, and a riveting hole 21 is provided on the bridging current-carrying component 2. The riveting protrusion 123 and the corresponding riveting hole 21 are riveted together to form the connection position. Preferably, the riveting hole 21 is a countersunk hole structure. In this embodiment, by designing the riveting hole 21 as a countersunk hole structure, the end of the riveting protrusion 123 will not protrude from the surface of the riveting hole 21 when the riveting protrusion 123 is riveted to the riveting hole 21. This effectively avoids the protrusion structure affecting the push card and the side wall of the relay base 3 after riveting. Correspondingly, the push card and the side wall of the base do not need to be provided with a wide clearance groove to avoid the protrusion structure, making the fit between the lead-out piece 1 and the bridging current-carrying component 2 and the push card and the relay base 3 more compact, and the sealing performance on the side wall of the relay base 3 is better controlled. In addition, when the connection structure is formed by welding, the distance between the two farthest connection positions is allowed to be equal to the width of the first clearance notch 121.

[0032] Furthermore, those skilled in the art should understand that in other embodiments, when the connection position for fixing the bridging current-carrying component 2 is formed by riveting, riveting hole structures can also be provided on both the second lead-out portion 12 and the bridging current-carrying component 2. The connection position for fixing the bridging current-carrying component 2 to the second lead-out portion 12 is formed by riveting the rivets with the corresponding riveting holes on the second lead-out portion 12 and the bridging current-carrying component 2. The height of the current-carrying portion of the second lead-out portion 12 is defined as H1, and the height of the first clearance notch 121 is defined as H2, then H2 is configured to be greater than H1; preferably, the height of the second clearance notch 122 is defined as H3, then H3 is configured to be less than H2.

[0033] Please refer to the appendix. Figure 1 To be continued Figure 6 One embodiment of this utility model also provides a relay, including a relay base 3 and a load terminal lead-out structure of any of the above embodiments. A base clearance groove 31 for avoiding the second lead-out portion is provided on the side wall of the relay base 3. The relay includes a moving spring assembly with a moving contact, and the load terminal lead-out structure is a stationary spring lead-out piece, and the load terminal lead-out structure is provided with a stationary contact corresponding to the moving contact; the moving spring assembly includes a moving spring with a moving contact and a moving spring lead-out piece, and the moving spring lead-out piece is formed by the load terminal lead-out structure. It can be understood that in this embodiment, the base clearance groove 31 on the relay base 3 cannot be too deep. If the base clearance groove 31 is too deep, it will reduce the strength of the side wall of the relay base 3, making it easy for the side wall of the relay base 3 to warp and deform at both sides of the groove during injection molding. In this embodiment, by configuring H2 to be greater than H1, the height of the base clearance groove 31 can be prevented from being too large, ensuring that the strength of the corresponding side wall of the relay base 3 is not greatly affected. In this embodiment, the groove depth of the base clearance groove 31 on the side wall of the relay base 3 should not exceed half of the total height of the side wall of the relay base 3, and preferably the groove depth is one-third of the total height of the side wall of the relay base 3. In this way, while ensuring the strength of the side wall of the relay base 3, the groove depth of the first clearance notch 121 on the second lead-out portion 12 can be minimized as much as possible, so that the second lead-out portion 12 at the middle position of the lead-out piece 1 has a relatively large current-carrying cross-sectional area. Furthermore, by configuring H3 to be less than H2, the height of the bridging current-carrying component can be roughly matched with H1, and further cutting of the bridging current-carrying component in the height direction is avoided, reducing material waste and ensuring that the current-carrying area of ​​the lead-out piece is not reduced too much.

[0034] 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 load terminal lead-out structure, applied to a relay, characterized in that: The device includes a lead-out piece (1) and a bridging current-carrying member (2). The lead-out piece (1) includes a first lead-out portion (11), a second lead-out portion (12) and a third lead-out portion (13) connected in sequence. The second lead-out portion (12) has a first clearance notch (121) for at least avoiding the side wall of the relay base (3). The bridging current-carrying member (2) is provided on the current-carrying part of the second lead-out portion (12) and is located on one side of the thickness direction of the second lead-out portion (12). The bridging current-carrying member (2) and the second lead-out portion (12) are configured to be connected by at least two connection positions, and the two connection positions with the farthest interval are located on both sides of the width direction of the first clearance notch (121).

2. The load terminal lead-out structure according to claim 1, characterized in that: The bridging current carrier (2) and the second lead-out part (12) are configured to be connected by two connection positions. The distance between the two connection positions is defined as D, and the width of the first clearance notch (121) is L1. Then D is greater than L1.

3. The load terminal lead-out structure according to claim 2, characterized in that: The bridging current-carrying component (2) is made from the cutting waste generated during the processing of the first clearance notch (121).

4. The load terminal lead-out structure according to claim 3, characterized in that: The second lead-out part (12) is also provided with a second clearance notch (122). The second clearance notch (122) is arranged adjacent to and connected to the first clearance notch (121). The second clearance notch (122) can also be used to avoid the drive component in the relay. The bridging current-carrying element (2) is made from the cutting waste generated when processing the first clearance notch (121) and the second clearance notch (122).

5. The load terminal lead-out structure according to claim 1, characterized in that: The connection position is formed by riveting or welding, thereby making the bridging current carrier (2) and the side of the second lead-out part (12) fixedly connected in the thickness direction.

6. The load terminal lead-out structure according to claim 5, characterized in that: When a connection position for fixing the bridging current carrier (2) is formed by riveting, a riveting protrusion structure is provided in one of the second lead-out portion (12) and the bridging current carrier (2), and a riveting hole structure adapted to the riveting protrusion structure is provided in the other. The riveting protrusion structure and the corresponding riveting hole structure are riveted together to form a connection position for fixing the bridging current carrier (2) to the second lead-out portion (12).

7. The load terminal lead-out structure according to claim 6, characterized in that: A riveting protrusion (123) is provided on the second lead-out part (12), and a riveting hole (21) is provided on the bridging current-carrying component (2). The riveting protrusion (123) and the corresponding riveting hole (21) are riveted together to form a connection position.

8. The load terminal lead-out structure according to claim 7, characterized in that: The rivet hole (21) is a countersunk hole structure.

9. The load terminal lead-out structure according to claim 5, characterized in that: When a connection position for fixing the bridging current carrier (2) is formed by riveting, a riveting hole structure is provided on both the second lead-out part (12) and the bridging current carrier (2), and a connection position for fixing the bridging current carrier (2) to the second lead-out part (12) is formed by riveting the rivets with the corresponding riveting holes on the second lead-out part (12) and the bridging current carrier (2).

10. The load terminal lead-out structure according to claim 1, characterized in that: Define the height of the portion of the second lead-out section (12) used for carrying current as H1, and define the height of the first clearance gap (121) as H2, then H2 is configured to be greater than H1.

11. The load terminal lead-out structure according to claim 10, characterized in that: Define the height of the second clearance gap (122) as H3, then H3 is configured to be less than H2.

12. A relay, characterized in that: The relay includes a relay base (3) and a load terminal lead-out structure as described in any one of claims 1 to 11. A base clearance groove (31) for avoiding the second lead-out part (12) is provided on the side wall of the relay base (3). The relay includes a moving spring assembly with a moving contact. The load terminal lead-out structure is a stationary spring lead-out piece, and the load terminal lead-out structure is provided with a stationary contact corresponding to the moving contact.

13. The relay according to claim 12, characterized in that: The moving spring assembly includes a moving spring with a moving contact and a moving spring lead-out piece, wherein the moving spring lead-out piece is formed by the load terminal lead-out structure.

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