Relay load connection structure and relay

Abstract

The invention discloses a relay load connection structure and a relay, the relay load connection structure comprises a relay body provided with a static spring pin and a movable spring pin, the static spring pin and the movable spring pin are respectively connected with a leading-out sheet, and the relay body is configured to be connected with an external load through the two leading-out sheets. The static spring pin and the movable spring pin of the relay body are respectively connected with one lead-out sheet, and an external load is directly connected and conducted with the static spring pin and the movable spring pin of the relay body through the two lead-out sheets, so that the current of the external load in a working state does not pass through the PCB, the problem of serious heating of the PCB is not caused, and the service life of the PCB is prolonged. And meanwhile, the influence of other heating components on the PCB on the relay is also reduced.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and specifically to a relay load connection structure and a relay. Background Technology

[0002] With the rapid development of industries such as photovoltaics, wind power, and new energy vehicles, the requirements for the current-carrying capacity of circuit boards are becoming increasingly stringent. In traditional relay designs, the stationary and moving spring pins are connected to the circuit board (PCB), and then the circuit board is connected to the external load for conduction. As a result, the load current must flow through the circuit board, leading to significant heat generation. To solve this problem, circuit board design often requires increasing the current-carrying area of ​​the copper foil and adding heat dissipation measures. This not only greatly increases design costs but often fails to achieve significant results. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a relay load connection structure, which mainly solves the technical problem of severe overheating of the circuit board caused by load current passing through it.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] A relay load connection structure includes a relay body with a stationary spring pin and a moving spring pin, with a lead-out piece connected to the stationary spring pin and the moving spring pin respectively, and the relay body is configured to be connected to an external load through the two lead-out pieces.

[0006] Furthermore, the lead-out chip includes a pin connection portion, a load connection portion, and a first extension portion connected between the pin connection portion and the load connection portion.

[0007] Furthermore, one of the two leads is connected to the stationary spring pin to form a stationary spring lead structure, and the other lead is connected to the moving spring pin to form a moving spring lead structure. Solder joints for connecting the load are formed on the load connection parts of both the stationary spring lead structure and the moving spring lead structure.

[0008] Furthermore, the two leads are configured to be connected to an external load via wires.

[0009] Furthermore, a wire terminal is formed on the load connection portion of the moving spring lead-out sheet structure and / or the stationary spring lead-out sheet structure.

[0010] Furthermore, the lead-out section also includes a PCB board connection portion and a second extension portion connecting the PCB board connection portion and the pin connection portion.

[0011] Furthermore, the pin connection part is a solder snap-fit ​​structure or a crimp terminal structure adapted to the stationary spring pin and the moving spring pin.

[0012] Furthermore, it also includes a base support bracket, on which a relay mounting slot is provided, and the relay body is adaptedly mounted and fixed in the relay mounting slot.

[0013] Furthermore, the base support bracket is provided with lead-out piece fixing parts for fixing the two lead-out pieces, and the two lead-out pieces are connected to the base support bracket through the corresponding lead-out piece fixing parts.

[0014] Furthermore, the base support bracket is made of plastic.

[0015] Furthermore, the lead-out piece is configured to narrow from the first extension section to the second extension section, so that the lead-out piece is wider at the top and narrower at the bottom. The lead-out piece fixing part is an insertion protrusion integrally formed on the base support bracket. The lead-out piece is provided with an insertion notch for insertion and engagement with the corresponding insertion protrusion. The two lead-out pieces are laterally inserted and engaged with the corresponding insertion protrusion through their respective insertion notches, thereby being fixedly connected to the base support bracket.

[0016] Furthermore, two vertically arranged insertion protrusions are provided on each of the two opposite outer sides of the base support bracket, and a tapered oblique edge is provided on one side of the second extension section of the lead-out piece, while two insertion notches are provided on the other side.

[0017] Furthermore, the inner side of the insertion notch is provided with a retaining clip to increase the locking and fastening of the connection.

[0018] Based on the same inventive concept, the present invention also provides a relay, including the above-described relay load connection structure.

[0019] Furthermore, by setting a first extension section and a second extension section on the lead-out piece, the relay body splits into two circuits from the stationary spring pin and the moving spring pin. One circuit corresponding to the first extension section is configured to be connected to the load, while the other circuit corresponding to the second extension section is configured to be connected to the PCB board.

[0020] Furthermore, a current-limiting resistor R1 is connected in series in the circuit connected to the PCB board, thereby limiting the current of the circuit to 1A or less.

[0021] The above technical solution has the following advantages or beneficial effects:

[0022] In the relay load connection structure and relay described in this invention, a lead-out piece is connected to the stationary spring pin and the moving spring pin of the relay body, respectively. The external load is directly connected to the stationary spring pin and the moving spring pin of the relay body through the two lead-out pieces. In this way, the current of the external load in the working state does not pass through the PCB board, which will not cause the PCB board to overheat. At the same time, it also reduces the impact of other heat-generating components on the PCB board on the relay. Furthermore, the lead-out pieces are designed with a structure that is wider at the top and narrower at the bottom. The upper part is designed with a wider structure to carry the large current of the load. While ensuring sufficient current-carrying area to reduce heat generation, it can also increase the heat dissipation performance of the lead-out pieces. The lower part is designed with a narrower structure to reduce the heat conduction cross section. This can reduce the heat generated by the large current of the relay and the load flowing through the lead-out pieces from being transferred to the PCB board through heat conduction. In addition, the insertion notch on the lead-out pieces can also reduce the heat conduction area to a certain extent, further reducing the heat conduction to the PCB board. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the installation structure of the relay according to Embodiment 1 of the present invention.

[0024] Figure 2 This is a three-dimensional structural diagram of the relay according to Embodiment 1 of the present invention.

[0025] Figure 3 This is a three-dimensional structural diagram of the stationary spring lead-out sheet structure according to Embodiment 1 of the present invention.

[0026] Figure 4 This is a three-dimensional structural schematic diagram of the moving spring lead-out sheet structure according to Embodiment 1 of the present invention.

[0027] Figure 5 This is a three-dimensional structural diagram of the base support bracket according to Embodiment 1 of the present invention.

[0028] Figure 6 This is a schematic diagram of the relay circuit connection according to Embodiment 1 of the present invention.

[0029] Figure 7 This is a three-dimensional structural schematic diagram of the stationary spring lead-out sheet structure according to Embodiment 2 of the present invention.

[0030] Figure 8 This is a three-dimensional structural schematic diagram of the moving spring lead-out sheet structure of Embodiment 2 of the present invention.

[0031] Labeling Explanation: 1. Relay body, 2. Lead-out piece, 3. Wire, 4. Base bracket, 5. PCB board, 11. Stationary spring pin, 12. Moving spring pin, 21. Pin connection part, 22. Load connection part, 23. First extension section, 24. PCB board connection part, 25. Second extension section, 26. Insertion notch, 41. Relay mounting slot, 42. Insertion protrusion, 221. Solder joint, 222. Wire clamp terminal, 261. Clip. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] In the description of this invention, 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 invention 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 invention.

[0034] Example 1

[0035] Please refer to the appendix. Figure 1 To be continued Figure 6 One embodiment of the present invention provides a relay load connection structure, including a relay body 1 with a stationary spring pin 11 and a moving spring pin 12. A lead-out piece 2 is connected to the stationary spring pin 11 and the moving spring pin 12 respectively, and the relay body 1 is configured to connect to an external load via the two lead-out pieces 2. It is understood that in this embodiment, a lead-out piece 2 is connected to the stationary spring pin 11 and the moving spring pin 12 of the relay body 1 respectively, and the external load is directly connected to the stationary spring pin 11 and the moving spring pin 12 of the relay body 1 via the two lead-out pieces 2. Thus, the current of the external load during operation does not pass through the PCB board 5, preventing severe overheating of the PCB board 5, and also reducing the impact of other heat-generating components on the PCB board 5 on the relay.

[0036] Please refer to the appendix. Figure 1 To be continued Figure 4In one preferred embodiment, the lead-out piece 2 includes a pin connection portion 21, a load connection portion 22, and a first extension portion 23 connecting the pin connection portion 21 and the load connection portion 22. Preferably, one of the two lead-out pieces 2 is connected to the stationary spring pin 11 to form a stationary spring lead-out piece structure, and the other lead-out piece 2 is connected to the moving spring pin 12 to form a moving spring lead-out piece structure. Solder joints 221 for connecting the load are formed on the load connection portions 22 of both the stationary spring lead-out piece structure and the moving spring lead-out piece structure. Preferably, the two lead-out pieces 2 are configured to be connected to an external load via wires 3; furthermore, wire terminals 222 are formed on the load connection portions 22 of the moving spring lead-out piece structure and / or the stationary spring lead-out piece structure. In this embodiment, the wire 3 can be firmly clamped and fixed by the wire clamping terminal 222, and then the wire 3 is soldered to the lead piece 2 by the solder joint 221, so that the external load is connected to the stationary spring pin 11 and the moving spring pin 12 of the relay body 1.

[0037] Please refer to the appendix. Figure 1 To be continued Figure 6 In one preferred embodiment, the lead-out piece 2 further includes a PCB board connection portion 24 and a second extension 25 connecting the PCB board connection portion 24 and the pin connection portion 21. In this embodiment, by providing a second extension 25 connected to the PCB board 5 on the lead-out piece 2, the relay body 1 branches out two circuits from the stationary spring pin 11 and the moving spring pin 12. One circuit is used to connect to the load (the current of this circuit is 32A or more), and the other circuit is used to connect to the PCB board. In a preferred embodiment, a current-limiting resistor R1 is connected in series in the circuit connected to the PCB board 5 to limit the current of this circuit to 1A or less. Thus, after the PCB board connection portions 24 of the two lead-out pieces 2 are soldered and fixed to the PCB board 5, the PCB board connection portions 24 can serve to fix the relay. At the same time, signal detection can also be performed through the PCB board connection portions 24.

[0038] Please refer to the appendix. Figure 1 To be continued Figure 4 In one preferred embodiment, the pin connection portion 21 is a solder snap-fit ​​structure adapted to the stationary spring pin 11 and the moving spring pin 12. In this embodiment, the snap-fit ​​structure of the pin connection portion 21 of the two lead-out pieces 2 can be snapped onto the corresponding stationary spring pin 11 and moving spring pin 12, and then a firm connection and conduction are achieved by soldering.

[0039] Please refer to the appendix. Figure 5In one preferred embodiment, the device further includes a base bracket 4, on which a relay mounting slot 41 is provided, and the relay body 1 is adaptedly mounted and fixed in the relay mounting slot 41. In this embodiment, preferably, the base bracket 4 has a semi-enclosed structure, so that the relay body 1 can be semi-enclosed and fixed on the base bracket 4, and the semi-enclosed structure is also conducive to heat dissipation of the relay body.

[0040] Please refer to the appendix. Figure 1 To be continued Figure 5 In one preferred embodiment, the base support bracket 4 is provided with lead-out piece fixing parts for fixing the two lead-out pieces 2. The two lead-out pieces 2 are connected to the base support bracket 4 through the corresponding lead-out piece fixing parts. Preferably, the base support bracket 4 is a plastic base support bracket. Further, the lead-out pieces 2 are configured to narrow from the first extension section 23 to the second extension section 25, so that the lead-out pieces 2 are wider at the top and narrower at the bottom. The lead-out piece fixing part is an insertion protrusion 42 integrally formed on the base support bracket 4. The lead-out pieces 2 are provided with insertion notches 26 for insertion and engagement with the corresponding insertion protrusions 42. The two lead-out pieces 2 are laterally inserted and engaged with the corresponding insertion protrusions 42 through their respective insertion notches 26, thereby being fixedly connected to the base support bracket 4. In this embodiment, by fixing the two lead-out pieces 2 to the outer side of the base bracket 4, on the one hand, the base bracket 4 separates the lead-out pieces 2 from the relay body 1, thereby reducing the impact of heat from the lead-out pieces 2 on the relay body 1. On the other hand, the outer side of the base bracket 4 also facilitates heat dissipation and improves the heat generation problem of the lead-out pieces 2. Thus, without changing the original structure of the relay body 1, the heat generation problem of the PCB board 5 can be solved by adding the base bracket 4, and the assembly of the relay body on the PCB board 5 can also be guaranteed. Furthermore, the lead-out pieces 2 are designed with a wider upper part and a narrower lower part. The wider upper part is designed to carry the large current of the load, which increases the heat dissipation performance of the lead-out pieces while ensuring sufficient current carrying area to reduce heat generation. The narrower lower part reduces the heat conduction cross section, which reduces the heat generated by the relay and the large current flowing through the lead-out pieces from being transferred to the PCB board through heat conduction. In addition, the insertion notch 26 on the lead-out pieces 2 can also reduce the heat conduction area to a certain extent, further reducing the heat conduction to the PCB board.

[0041] Please refer to the appendix. Figure 1 To be continued Figure 5In one preferred embodiment, two vertically arranged insertion protrusions 42 are provided on each of the two opposite outer sides of the base bracket 4. The second extension 25 of the lead-out piece 2 has a tapered, beveled edge on one side and two insertion notches 26 on the other side. Preferably, the inner side of the insertion notches 26 is provided with a retaining clip 261 to increase the locking tightness. However, those skilled in the art should understand that in other embodiments, the lead-out piece 2 can also be fixedly connected to the base bracket 4 by other fixing structures, and is not limited to the specific implementation disclosed in this embodiment, such as using a snap-fit ​​connection structure.

[0042] Please refer to the appendix. Figure 1 To be continued Figure 6 An embodiment of the present invention also provides a relay, including the relay load connection structure described above.

[0043] Example 2

[0044] Please refer to the appendix. Figure 7 and attached Figure 8 The difference between this embodiment and Embodiment 1 lies only in that the pin connection portion 21 is a crimped terminal structure adapted to the stationary spring pin 11 and the moving spring pin 12. However, those skilled in the art should understand that in other embodiments, the pin connection portion 21 can also adopt other existing connection structures to connect with the stationary spring pin 11 and the moving spring pin 12, and is not limited to the specific implementation methods disclosed in the embodiments of this application. As long as a stable connection and conduction between the pin connection portion 21 and the corresponding stationary spring pin 11 or moving spring pin 12 can be achieved, it is acceptable.

[0045] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 therein. 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 the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

Claims

1. A relay load connection structure, characterized in that: The relay body (1) includes a stationary spring pin (11) and a moving spring pin (12), and a lead-out piece (2) is connected to the stationary spring pin (11) and the moving spring pin (12) respectively. The relay body (1) is configured to be connected to an external load through the two lead-out pieces (2).

2. The relay load connection structure according to claim 1, characterized in that: The lead-out piece (2) includes a pin connection portion (21), a load connection portion (22), and a first extension portion (23) connected between the pin connection portion (21) and the load connection portion (22).

3. The relay load connection structure according to claim 2, characterized in that: The lead-out piece (2) also includes a PCB board connection part (24) and a second extension (25) connected between the PCB board connection part (24) and the pin connection part (21).

4. The relay load connection structure according to claim 2, characterized in that: One of the two lead-out pieces (2) is connected to the stationary spring pin (11) to form a stationary spring lead-out piece structure, and the other lead-out piece (2) is connected to the moving spring pin (12) to form a moving spring lead-out piece structure. Solder joints (221) for connecting the load are formed on the load connection parts (22) of both the stationary spring lead-out piece structure and the moving spring lead-out piece structure.

5. The relay load connection structure according to claim 2, characterized in that: The two leads (2) are configured to be connected to an external load via wires (3); Preferably, a wire terminal (222) is also formed on the load connection portion (22) of the moving spring lead-out sheet structure and / or the stationary spring lead-out sheet structure.

6. The relay load connection structure according to claim 2, characterized in that: The pin connection part (21) is a solder snap-fit ​​structure or a crimp terminal structure that is compatible with the stationary spring pin (11) and the moving spring pin (12).

7. The relay load connection structure according to any one of claims 3 to 6, characterized in that: It also includes a base support bracket (4), on which a relay mounting slot (41) is provided, and the relay body (1) is adaptedly mounted and fixed in the relay mounting slot (41).

8. The relay load connection structure according to claim 7, characterized in that: The base support bracket (4) is provided with lead-out piece fixing parts for fixing the two lead-out pieces (2), and the two lead-out pieces (2) are connected to the base support bracket (4) through the corresponding lead-out piece fixing parts; Preferably, the base support bracket (4) is made of plastic.

9. The relay load connection structure according to claim 8, characterized in that: The lead-out piece (2) is configured to narrow from the first extension section (23) to the second extension section (25), so that the lead-out piece (2) is wider at the top and narrower at the bottom. The lead-out piece fixing part is an insertion protrusion (42) integrally formed on the base bracket (4). The lead-out piece (2) is provided with an insertion notch (26) for insertion and engagement with the corresponding insertion protrusion (42). The two lead-out pieces (2) are laterally inserted and engaged with the corresponding insertion protrusion (42) through their respective insertion notches (26) and thus fixedly connected to the base bracket (4).

10. The relay load connection structure according to claim 9, characterized in that: Two vertically arranged insertion protrusions (42) are provided on each of the two opposite outer sides of the bottom support bracket (4). The second extension section (25) of the lead-out piece (2) has a tapered oblique edge on one side and two insertion notches (26) on the other side. Preferably, the inner side of the insertion notch (26) is provided with a snap-fit ​​clip (261) to increase the snap-fit ​​tightness.

11. A relay, characterized in that: Includes the relay load connection structure as described in any one of claims 3 to 10.

12. The relay according to claim 11, characterized in that: By setting a first extension section (23) and a second extension section (25) on the lead-out piece (2), the relay body (1) is divided into two circuits from the stationary spring pin (11) and the moving spring pin (12). One circuit corresponding to the first extension section (23) is configured to be connected to the load, while the other circuit corresponding to the second extension section (25) is configured to be connected to the PCB board (5). Preferably, a current-limiting resistor R1 is connected in series in the circuit connected to the PCB board (5) to limit the current of the circuit to 1A or less.

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