Terminal leading-out structure of relay and relay

Abstract

The utility model discloses a relay leading-out structure and a relay, the relay leading-out structure comprises a relay body and a leading-out wire, the inner side end of the leading-out wire is configured to be connected with a leading-out terminal in the relay body, and the outer side end of the leading-out wire is configured to penetrate out of the relay body to be connected with an external circuit. And the coil rack in the relay body is also provided with a wire limiting part, and the coil rack forms a limiting effect on the lead-out wire through the wire limiting part. The leading-out terminal of the relay is led out through the leading-out wire, the leading-out terminal of the relay can be rapidly connected with an external circuit through the leading-out wire, the wire limiting part is further arranged on the coil rack in the relay body, the leading-out wire can be stably limited through the wire limiting part, and the leading-out terminal of the relay can be rapidly connected with the external circuit through the leading-out wire. And the lead-out wire is prevented from shaking, throwing and other defects in the relay.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technology field, concretely relates to a terminal lead-out structure of relay and relay. BACKGROUND

[0002] Relay is a kind of electronic control device, it has control system (also called input loop) and controlled system (also called output loop), is usually applied to automatic control circuit. Relay is actually a " automatic switch " with smaller current to control larger current. Therefore in circuit plays automatic regulation, safety protection, conversion circuit etc. In some specific use scene, it requires that the lead-out terminal of relay can be connected with external circuit quickly, reliably and stably, however, current relay still cannot satisfy the requirement that lead-out terminal is connected with external circuit quickly and reliably and stably. SUMMARY

[0003] In view of the deficiency of prior art, the utility model provides a terminal lead-out structure of relay, and its main solution is that the existing relay cannot satisfy the technical problem that lead-out terminal is connected with external circuit quickly and reliably and stably.

[0004] To achieve the above purpose, the utility model is realized by the following technical schemes:

[0005] A kind of terminal lead-out structure of relay, including relay body and lead-out wire, the inner side end of lead-out wire is configured to be connected with the lead-out terminal inside relay body, the outer side end is configured to pass through relay body to be connected with external circuit, and coil holder inside relay body is further provided with wire limiting portion, and coil holder is limited to lead-out wire by wire limiting portion.

[0006] Further, the inner side end of lead-out wire is fixedly connected with lead-out terminal.

[0007] Further, the end of lead-out terminal is formed with horizontal bending part, and the through hole is formed in horizontal bending part, and the inner side end of lead-out wire is fixedly connected with lead-out terminal by tin soldering after passing through the through hole of horizontal bending part.

[0008] Further, circuit board is fixedly installed in relay body, and the inner side end of lead-out terminal and lead-out wire are respectively welded and fixed on circuit board, and realize the electrical connection between the two by circuit board.

[0009] Further, the outer side end of lead-out wire is connected with connector plug convenient for being connected with external circuit.

[0010] Further, lead-out terminal is auxiliary contact lead-out terminal of relay or coil lead-out terminal of relay.

[0011] Furthermore, the lead wire limiting part includes a wire clamping groove formed on the coil frame, and the lead wire is adapted to be clamped in the wire clamping groove and thus limited on the coil frame; preferably, the lead terminal is configured to be led out from one flange of the coil frame, and the wire clamping groove is configured to be formed on another flange of the coil frame, and the lead wire is adapted to be clamped in the wire clamping groove approximately in the middle.

[0012] Furthermore, a heat shrink tubing is fitted at the inner and outer sides of the housing where the lead wire passes through the relay body. The two heat shrink tubing abuts against the inner and outer walls of the housing sidewall, thereby preventing the lead wire from detaching and limiting its movement.

[0013] Furthermore, the wire limiting part includes two oppositely arranged wire clamping grooves, and the portion between the two wire clamping grooves forms a winding post. The lead wire is configured to wrap around the winding post at least once before passing through the housing of the relay body.

[0014] Based on the same inventive concept, this utility model also provides a relay, including any of the terminal lead-out structures described above.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] In the relay terminal lead-out structure and relay described in this utility model, the lead-out terminals of the relay are led out through lead-out wires. The lead-out wires enable the lead-out terminals of the relay to be quickly connected to external circuits. Furthermore, a wire limiting part is provided on the coil frame inside the relay body. The wire limiting part can stably limit the lead-out wires to prevent defects such as shaking or wire slippage inside the relay. It can also effectively prevent the lead-out wires from being damaged when the relay housing is installed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the terminal lead-out structure in Embodiment 1 of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the terminal lead-out structure in Embodiment 2 of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the terminal lead-out structure in Embodiment 3 of this utility model.

[0020] Figure 4 This is a partial structural cross-sectional view of the terminal lead-out structure of Embodiment 3 of this utility model.

[0021] Label Explanation:

[0022] 1. Lead wire, 2. Lead terminal, 3. Coil frame, 4. Circuit board, 5. Housing, 6. Heat shrink tubing, 21. Horizontal bend, 31. Wire slot, 32. Wire winding post, 211. Through hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] 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.

[0025] Example 1

[0026] Please refer to the appendix. Figure 1 One embodiment of this utility model provides a terminal lead-out structure for a relay, including a relay body and a lead wire 1. The inner end of the lead wire 1 is configured to connect to the lead-out terminal 2 inside the relay body, and the outer end is configured to extend out of the relay body to connect to an external circuit. Furthermore, a wire limiting part is provided on the coil frame 3 inside the relay body, which limits the lead wire 1. It is understood that in this embodiment, the relay's lead-out terminal is led out through the lead wire 1. The lead wire 1 allows the relay's lead-out terminal to be quickly connected to an external circuit. The wire limiting part on the coil frame 3 inside the relay body stably limits the lead wire 1, preventing defects such as shaking or wire slippage within the relay.

[0027] Please refer to the appendix. Figure 1 In one preferred embodiment, the inner end of the lead wire 1 is fixedly connected to the lead terminal 2. Preferably, the end of the lead terminal 2 has a horizontal bend 21, and a through hole 211 is provided on the horizontal bend 21. The inner end of the lead wire 1 passes through the through hole 211 of the horizontal bend 21 and is fixedly connected to the lead terminal 2 by soldering. By forming the horizontal bend 21 by horizontally bending the end of the lead terminal 2, the inner end of the lead wire 1 is easier to solder and fix to the lead terminal, improving the convenience of the soldering operation.

[0028] Please refer to the appendix. Figure 1In one preferred embodiment, a connector plug (not shown) is connected to the outer end of the lead wire 1 to facilitate connection with an external circuit. Thus, the connection efficiency between the lead wire 1 and the external circuit can be greatly improved by using the connector plug. This is achieved simply by providing a plug structure compatible with the connector plug at the connection point of the external circuit. For example, a male connector plug can be connected to the outer end of the lead wire 1, and a corresponding female plug can be provided at the connection point of the external circuit. Quick connection is achieved by interlocking the male and female plugs.

[0029] In this embodiment, the lead-out terminal 2 is an auxiliary contact lead-out terminal of the relay or a coil lead-out terminal of the relay. However, those skilled in the art should understand that in other embodiments, the lead-out terminal 2 may also be a temperature sensor or other structure with lead-out terminals installed inside the relay, and is not limited to the auxiliary contact lead-out terminal or coil lead-out terminal disclosed in this embodiment.

[0030] Please refer to the appendix. Figure 1 In one preferred embodiment, the wire limiting portion includes a wire-clamping groove 31 formed on the coil frame 3. The lead-out terminal 2 is configured to extend from one flange of the coil frame 3, and the wire-clamping groove 31 is configured to extend from the other flange of the coil frame 3. The lead-out wire 1 is fitted into the wire-clamping groove 31 approximately in the middle, thereby limiting its position on the coil frame 3. In this embodiment, preferably, the wire limiting portion includes two opposing wire-clamping grooves 31, and the portion between the two wire-clamping grooves 31 forms a winding post 32. The lead-out wire 1 is configured to wrap around the winding post 32 at least once before exiting the housing 5 of the relay body. In this embodiment, by winding the lead-out wire 1 around the winding post 32, the pull-out resistance of the lead-out wire 1 can be improved, and the external pulling force on the lead-out wire 1 can be prevented from directly acting on the connection position between the lead-out wire 1 and the lead-out terminal 2, thus ensuring the reliability of the connection position between the inner end of the lead-out wire 1 and the lead-out terminal 2.

[0031] Please refer to the appendix. Figure 1 One embodiment of this utility model also provides a relay, including any of the terminal lead-out structures described above.

[0032] Example 2

[0033] Please refer to the appendix. Figure 2The difference between this embodiment and Embodiment 1 is that a circuit board 4 is fixedly installed inside the relay body. The inner ends of the lead-out terminal 2 and the lead-out wire 1 are respectively soldered and fixed to the circuit board 4, and the electrical connection between them is achieved through the circuit board 4. It can be understood that in this embodiment, the inner end of the lead-out wire 1 and the lead-out terminal 2 are not directly soldered together, but are connected by a transfer soldering through the circuit board 4 fixed inside the relay body. In this way, when an external force pulls on the lead-out wire 1, its pulling force will act on the circuit board 4, rather than directly on the lead-out terminal 2 of the relay, effectively improving reliability.

[0034] Example 3

[0035] Please refer to the appendix. Figure 3 Appendix Figure 4 The difference between this embodiment and Embodiment 2 is that a heat-shrink tubing 6 is respectively fitted inside and outside the housing 5 through which the lead wire 1 passes. The two heat-shrink tubing 6 abut against the inner and outer walls of the housing 5, thereby preventing the lead wire 1 from detaching and limiting its position. In this embodiment, since the heat-shrink tubing 6 is fitted inside and outside the housing 5 through which the lead wire 1 passes, the heat-shrink tubing 6 will tighten and fix itself to the lead wire 1 after heating. Furthermore, by the two heat-shrink tubing 6 being clamped onto the inner and outer walls of the housing 5, the lead wire 1 can be effectively prevented from detaching and limited, and the shaking of the lead wire 1 can be reduced. Preferably, the lead wire 1 can be clamped and limited by the wire clamping groove 31 on the coil frame 3, without the need for winding before leading out. This reduces the winding process, improves assembly efficiency, and is conducive to realizing automated product assembly.

[0036] 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 terminal lead-out structure of a relay characterized by comprising: The relay body and the lead-out wire (1) are included, the inner side end of the lead-out wire (1) is configured to be connected with the lead-out terminal (2) inside the relay body, the outer side end is configured to pass through the relay body to be connected with the external circuit, and the coil holder (3) inside the relay body is further provided with a wire limiting part, and the coil holder (3) forms a limiting action on the lead-out wire (1) through the wire limiting part.

2. The terminal lead-out structure of a relay according to claim 1, characterized in that: The inner side end of the lead-out wire (1) is fixedly connected with the lead-out terminal (2).

3. The terminal lead-out structure of a relay according to claim 2, characterized in that: The end of the lead-out terminal (2) is formed with a horizontal bending part (21), and a through hole (211) is formed in the horizontal bending part (21), and the inner side end of the lead-out wire (1) passes through the through hole (211) of the horizontal bending part (21) and is fixedly connected with the lead-out terminal (2) through soldering.

4. The terminal lead-out structure of a relay according to claim 1, characterized in that: The circuit board (4) is fixedly installed inside the relay body, and the lead-out terminal (2) and the inner side end of the lead-out wire (1) are respectively welded and fixed on the circuit board (4), and the electrical connection between the two is realized through the circuit board (4).

5. The terminal lead-out structure of a relay according to claim 1, characterized by: The outer side end of the lead-out wire (1) is connected with a connector plug convenient for connecting with the external circuit.

6. The terminal lead-out structure of a relay according to claim 1, characterized by: The lead-out terminal (2) is an auxiliary contact lead-out terminal of the relay or a coil lead-out terminal of the relay.

7. The terminal lead-out structure of a relay according to any one of claims 1 to 6, characterized in that: The wire limiting part includes a wire clamping groove (31) formed on the coil holder (3), and the lead-out wire (1) is adaptively clamped in the wire clamping groove (31) and is limited on the coil holder (3).

8. The terminal lead-out structure of a relay according to claim 7, characterized by: The lead-out terminal (2) is configured to be led out from one flange part of the coil holder (3), and the wire clamping groove (31) is configured to be formed on the other flange part of the coil holder (3), and the lead-out wire (1) is adaptively clamped in the wire clamping groove (31) at the approximate middle part.

9. The terminal lead-out structure of a relay according to claim 7, characterized by: A heat shrink tube (6) is respectively sleeved at the inner and outer side positions of the lead-out wire (1) penetrating through the shell (5) of the relay body, and the two heat shrink tubes (6) are respectively abutted on the inner and outer wall surfaces of the side wall of the shell (5), thereby forming a anti-disengagement limiting action on the lead-out wire (1).

10. The terminal lead-out structure of a relay according to any one of claims 1 to 6, characterized by: The wire limiting part includes two oppositely arranged wire clamping grooves (31), and the part between the two wire clamping grooves (31) forms a winding column (32), and the lead-out wire (1) is configured to at least wind around the winding column (32) for one turn before penetrating out of the shell (5) of the relay body.

11. A relay characterized by: The terminal lead-out structure of the relay according to any one of claims 1 to 10 is included.

Images