An insulating terminal structure for a relay

Abstract

The present invention discloses an insulating terminal structure for a relay, the insulating terminal structure comprises a first insulating terminal and a second insulating terminal; the first insulating terminal comprises a first supporting portion and a first lead pin vertically arranged on one side of the first supporting portion, the first insulating terminal is vertically embedded in the relay housing and the first lead pin is exposed on one side of the relay housing; the second insulating terminal comprises a second supporting portion and a second pin vertically arranged on the second supporting portion, the second insulating terminal is vertically embedded in the relay housing and the second pin is exposed in the relay housing; the first insulating terminal and the second insulating terminal are inserted into the relay housing in opposite directions. The insulating terminal structure of the present invention can not only effectively improve the production yield and pass rate of assembly, but also isolate the control circuit board and the output circuit, and the auxiliary housing plays an insulating role.

Description

Technical Field

[0001] The invention belongs to the technical field of relays, and in particular relates to an insulating terminal structure for a relay. Background Art

[0002] A relay is an electrical control device that is widely used in control circuits of household appliances, remote controls, communications, and automation. Its actual function is to control the large current in the output circuit through the small current in the control circuit. It is an automatic switch.

[0003] Most of the existing relays' dynamic spring lead pins and static spring lead pins are formed in one piece, and are formed by branching directly on the dynamic spring sheet and the static spring sheet. When the relay is assembled, the dynamic spring lead pin and the static spring lead pin penetrate the shell to complete the assembly. However, when assembling the relay shell, it is necessary to accurately insert the dynamic spring lead pin, the static spring lead pin, and the two pins of the coil lead terminal at the same time, for a total of four pins. If any of the four pins fails to penetrate the shell smoothly, the relay cannot be assembled smoothly, which can easily reduce the production yield and pass rate of the assembly. In addition, the voltage in the relay control circuit (i.e., PCB board) is usually small, while the voltage in the output circuit is usually large. A large amount of arc heat will be generated at the moment when the dynamic contact and the static contact are released. Especially when the relay works in a high temperature environment, the heat generated by the arc is quickly transferred to the dynamic spring lead pin and the static spring lead pin, and then transferred to the PCB board, causing a large adverse effect on the PCB board. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides an insulating terminal structure for a relay, which can not only effectively improve the production yield and pass rate of assembly, but also isolate the control circuit board and the output circuit, and assist the housing to play an insulating role.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An insulating terminal structure for a relay comprises a first insulating terminal and a second insulating terminal; the first insulating terminal comprises a first supporting portion and a first lead pin vertically arranged at one side of the first supporting portion, the first insulating terminal is vertically embedded in the top of a relay housing and the first lead pin is exposed at one side of the relay housing; the second insulating terminal comprises a second supporting portion and a second pin vertically arranged on the second supporting portion, the second insulating terminal is vertically embedded in the top of the relay housing and the second pin is exposed at the relay housing; the first insulating terminal and the second insulating terminal are inserted into the relay housing in opposite directions.

[0007] Furthermore, the first insulating terminal and the second insulating terminal are both embedded in the interlayer opened at the top of the relay housing. After being embedded in the interlayer at the top of the relay housing, the first insulating terminal and the second insulating terminal are in the same horizontal plane, and the first insulating terminal and the second insulating terminal are embedded in the top of the relay housing in opposite directions.

[0008] Furthermore, a first interlayer adapted to the first insulating terminal structure and a second interlayer adapted to the second insulating terminal structure are provided on the top of the relay housing, and the first interlayer and the second interlayer are on the top of the relay housing and in the same horizontal plane.

[0009] Furthermore, a first assembly end is provided at one end of the first support portion, and the first insulating terminal is embedded in the first interlayer perpendicular to the length direction of the relay housing through the first assembly end; a second assembly end is provided at one end of the second support portion, and the second insulating terminal is embedded in the second interlayer perpendicular to the length direction of the relay housing through the second assembly end.

[0010] Furthermore, first chamfers are provided on both sides of the head of the first assembly end portion, and second chamfers are provided on both sides of the head of the second assembly end portion.

[0011] Furthermore, the first insulating terminal also includes a first bent connection portion, the first pin is connected to one side of the first support portion through the first bent connection portion, the first bent connection portion is located on the side of the first support portion with a longer length, and the first insulating terminal is an integrated structure.

[0012] Furthermore, first protruding buckles are provided on both sides of the first supporting portion, and the first protruding buckles are located between the first pin and the first assembly end.

[0013] Furthermore, the second insulating terminal includes a second bent connecting portion, and the second pin is connected to the other end of the second supporting portion through the second bent connecting portion; third pins are also horizontally led out from both edges of the other end of the second supporting portion, and the third pin and the second supporting portion are embedded in the relay housing together; the second pin is located at the center position of the side of the second supporting portion with a smaller length; the second insulating terminal is an integrated structure.

[0014] Furthermore, a second buckle is provided on the second assembly end, and the second buckle is located between the second chamfers on both sides.

[0015] Furthermore, the first insulating terminal and the second insulating terminal are made of carbon structural steel.

[0016] Beneficial effects: Compared with the prior art, the insulating terminal structure of the present invention has the following advantages:

[0017] 1. The structural design is novel and easy to form. The first insulating terminal and the second insulating terminal are assembled with the relay housing in an external embedded manner. The first insulating terminal and the second insulating terminal do not penetrate the relay housing. The insulating terminals are vertically embedded in the relay housing, and the first insulating terminal and the second insulating terminal are simultaneously inserted into the interlayer opened at the top of the relay housing from opposite directions. The first insulating terminal and the second insulating terminal replace the dynamic spring lead pin and the static spring lead pin. The assembly method is simple and efficient. When assembling the relay, it is only necessary to ensure that the two coil lead terminal pins penetrate the housing smoothly, which is convenient for installation by automated process, can effectively improve the production yield and pass rate of assembly, and realize the rapid assembly of the relay;

[0018] 2. The first insulating terminal and the second insulating terminal are embedded in the relay housing to complete the assembly. After assembly, the supporting surfaces of the first insulating terminal and the second insulating terminal and the relay housing together form an area with high overall structural strength, which can significantly improve the overall strength of the housing;

[0019] 3. It can isolate the control circuit from the output circuit, and the auxiliary relay housing plays an insulating role; when the voltage in the output circuit is very large, a large amount of arc heat generated at the moment of release of the moving and static contacts will be sealed inside the relay housing. In severe cases, only the relay will be burned. Since the first insulating terminal and the second insulating terminal of the present invention are externally embedded in the relay housing, the arc heat cannot be transferred to the control circuit board through the insulating terminals, and will not have any effect on the control circuit board. It can effectively avoid the function of the control circuit in the control circuit board being affected, thereby isolating the control circuit from the output circuit, and the auxiliary relay housing plays the role of insulating heat conduction and insulating electricity conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the assembly of the insulating terminal and the relay housing of the present invention;

[0022] Figure 2 for Figure 1 Middle AA section view;

[0023] Figure 3 It is a structural schematic diagram of the relay housing of the present invention;

[0024] Figure 4 It is an assembly diagram of the relay of the present invention;

[0025] Figure 5 is a three-dimensional schematic diagram of the first insulating terminal of the present invention;

[0026] Figure 6 A three-dimensional schematic diagram of the second insulating terminal of the present invention;

[0027] Figure 7 is a schematic structural diagram of the first insulating terminal of the present invention;

[0028] Figure 8 A schematic structural diagram of the second insulating terminal of the present invention;

[0029] Fig. 9 A top view of the first insulating terminal according to Embodiment 2 of the present invention;

[0030] Fig.10 A top view of the second insulating terminal according to Embodiment 2 of the present invention;

[0031] Fig.11 This is a three-dimensional diagram of the first insulating terminal according to Embodiment 2 of the present invention;

[0032] Fig.12 This is a three-dimensional diagram of the second insulating terminal in embodiment 2 of the present invention.

[0033] In the figure: 1-relay housing, 2-first insulating terminal, 201-first supporting portion, 202-first lead pin, 203-first assembly end, 204-first chamfer, 205-first bent connecting portion, 206-first buckle, 3-second insulating terminal, 301-second supporting portion, 302-second lead pin, 303-second assembly end, 304-second chamfer, 305-third lead pin, 306-second bent connecting portion, 307-second buckle, 4-control circuit board, 5-output loop terminal, 6-coil lead terminal, 7-assembly hole, 11-first interlayer, 12-second interlayer. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Example 1

[0038] refer to Figures 1 to 8 , an insulating terminal structure for a relay, comprising a first insulating terminal 2 and a second insulating terminal 3; the first insulating terminal 2 comprises a first supporting portion 201 and a first lead pin 202 vertically arranged on one side of the first supporting portion 201, the first insulating terminal 2 is vertically embedded in the top of a relay housing 1 and the first lead pin 202 is exposed on one side of the relay housing 1; the second insulating terminal 3 comprises a second supporting portion 301 and a second pin 302 vertically arranged on the second supporting portion 301, the second insulating terminal 3 is vertically embedded in the top of the relay housing 1 and the second pin 302 is exposed on the relay housing 1; the first insulating terminal 2 and the second insulating terminal 3 are inserted into the relay housing 1 in opposite directions.

[0039] Further, refer to Figures 1 to 8 The first insulating terminal 2 and the second insulating terminal 2 are both inserted into the interlayer opened at the top of the relay housing 1. After the first insulating terminal 2 and the second insulating terminal 2 are inserted into the interlayer at the top of the relay housing 1, they are in the same horizontal plane, and the first insulating terminal 2 and the second insulating terminal 2 are inserted into the top of the relay housing 1 in opposite directions; the first insulating terminal 2 and the second insulating terminal 3 are simultaneously inserted into the interlayer opened at the top of the relay housing 1 from opposite directions and have an interference fit with the interlayer, replacing the dynamic spring lead-out pin and the static spring lead-out pin. The assembly method is simple and efficient. When assembling the relay, it is only necessary to ensure that the two coil lead-out terminal pins penetrate the shell smoothly, which is convenient for installation by automated process, can effectively improve the production yield and pass rate of assembly, and realize the rapid assembly of the relay.

[0040] Further, refer to Figures 1 to 8The top of the relay housing 1 is provided with a first interlayer 11 for matching the structure of the first insulating terminal 2 and a second interlayer 12 for matching the structure of the second insulating terminal 3, and the first interlayer 11 and the second interlayer 12 are at the top of the relay housing 1 and are in the same horizontal plane. The thickness of the first insulating terminal 2 is the same as the thickness of the first interlayer 11, and the width of the first insulating terminal 2 is slightly larger than the width of the first interlayer 11, so as to achieve an interference fit between the first insulating terminal 2 and the first interlayer 11. The thickness of the second insulating terminal 3 is the same as the thickness of the second interlayer 12, and the width of the second insulating terminal 3 is slightly larger than the width of the second interlayer 12, so as to achieve an interference fit between the second insulating terminal 3 and the second interlayer 12.

[0041] Furthermore, a first assembly end 203 is provided at one end of the first supporting portion 201, and the first insulating terminal 2 is embedded in the first interlayer 11 perpendicular to the length direction of the relay housing 1 through the first assembly end 203; a second supporting portion 301 is provided at one end with a second assembly end 303, and the second insulating terminal 3 is embedded in the second interlayer 12 perpendicular to the length direction of the relay housing 1 through the second assembly end 303, and the first insulating terminal 2 and the second insulating terminal 3 are embedded in the corresponding interlayers in the relay housing 1 to complete the assembly. After assembly, the supporting surfaces of the first insulating terminal 2 and the second insulating terminal 3 become part of the relay housing 1, and together with the relay housing 1, they form an area with higher overall structural strength, which not only significantly improves the overall strength of the relay housing 1 but also supports the relay housing 1.

[0042] It should be noted that the reference Figures 1 to 4 The relay of the present invention includes an electromagnetic relay. The insulating terminal of the relay equipped with the insulating terminal of the present invention is externally embedded. The first lead pin 202 and the second lead pin 302 of the first insulating terminal 2 and the second insulating terminal 3 do not penetrate the relay housing 1. The first insulating terminal 2 and the second insulating terminal 3 are directly embedded in the relay housing 1 perpendicular to the length direction of the housing. Finally, the assembly of the finished product is completed. The output circuit terminal 5 is located at the end of the relay housing 1 opposite to the first insulating terminal 2 and the second insulating terminal 3. Reference Figure 4, the first insulating terminal 2 and the second insulating terminal 3 of the present invention replace the dynamic spring lead pin and the static spring lead pin, the assembly method is simple and efficient, no glue sealing is required after assembly, and production time can be saved. When assembling the relay, it is only necessary to ensure that the pins of the two coil lead terminals 6 can smoothly penetrate the shell, which can effectively improve the production yield and pass rate of the assembly, and realize the rapid assembly of the relay; after the assembly is completed, the first lead pin 202, the second lead pin 302 and the pins of the two coil lead terminals 6 are inserted into the assembly hole 7 opened on the control circuit board 4, and are fixed on the control circuit board 4 through welding. When the voltage in the output circuit is very large, a large amount of arc heat generated at the moment of release of the dynamic and static contacts will be enclosed in the relay housing 1. In severe cases, the relay will only be burned. Since the first insulating terminal 2 and the second insulating terminal 3 of the present invention are externally embedded in the relay housing, the arc heat cannot be transferred to the control circuit board 4 through the first insulating terminal 2 and the second insulating terminal 3, and will not have any effect on the control circuit board 4. It can effectively avoid the function of the control circuit in the control circuit board 4 from being affected, thereby isolating the control circuit from the output circuit, and assisting the relay housing 1 in performing the functions of insulating heat conduction and insulating electricity conduction.

[0043] Further, refer to Figures 5 to 8 The first assembly end 203 has first chamfers 204 on both sides of the head, and the second assembly end 303 has second chamfers 304 on both sides of the head. The first chamfer 204 and the second chamfer 304 are chamfered at right angles, which is conducive to the first insulating terminal 2 and the second insulating terminal 3 being smoothly nested into the relay housing 1 and becoming a part of the relay housing 1, thereby strengthening the strength of the relay housing 1.

[0044] Further, refer to Figure 5 and Figure 7 The first insulating terminal 2 also includes a first bent connecting portion 205, and the first pin 202 is connected to one side of the first supporting portion 201 through the first bent connecting portion 205. The first bent connecting portion 205 is located on the side of the first supporting portion 201 with a longer length, and the first insulating terminal 2 is an integrated structure.

[0045] It should be noted that the reference Figure 5 and Figure 7The first insulating terminal 2 adopts an insulating terminal with an L-shaped structure. The first supporting portion 201 is a plate-like structure and is a horizontal supporting surface of the L-shaped insulating terminal. The first pin 202 is a vertical leg of the L-shaped insulating terminal. According to the position distribution of the assembly hole 7 on the control circuit board 4, the first pin 202 is connected to the side of the length direction of the first supporting portion 201 through the first bent connecting portion 205. The first pin 202 is perpendicular to the first supporting portion 201. The L-shaped first insulating terminal can meet the position requirements of the assembly hole 7 on the control circuit board 4, and at the same time, the first supporting portion 201 of the first insulating terminal 2 can be embedded in the first interlayer 11 of the relay housing 1 with a large area, becoming a part of the relay housing 1, thereby strengthening the strength of the relay housing.

[0046] Further, refer to Figure 6 and Figure 8 The second insulating terminal 3 includes a second bent connecting portion 306, and the second pin 302 is connected to the other end of the second supporting portion 301 through the second bent connecting portion 306; the second supporting portion 301 also has third pins 305 horizontally extending from both edges of the other end, and the third pin 305 and the second supporting portion 301 are embedded in the relay housing 1 together; the second pin 302 is located at the center position of the side with the smaller length of the second supporting portion 301; the second insulating terminal 3 is an integrated structure.

[0047] It should be noted that the reference Figure 6 and Figure 8 The second insulating terminal 3 is an insulating terminal with a T-shaped structure. The second supporting portion 301 and the third pin 305 are an integrated plate-like structure that constitutes the T-shaped horizontal cantilever surface of the second insulating terminal 3, which provides better support and reinforcement for the relay housing. The second pin 302 is a vertical leg of the T-shape. The second pin 302 is connected to the center position of the side with a smaller length (in the width direction) of the second supporting portion 301 through the second curved connecting portion 306, and is perpendicular to the second supporting portion 301. Figures 5 to 10 , the length of the first lead pin 202 in the first insulating terminal 2 is L1, the length of the second lead pin 302 in the second insulating terminal 3 is L2, and L1=L2.

[0048] Furthermore, the first insulating terminal and the second insulating terminal 3 are made of carbon structural steel or other metal materials with high strength and hardness. It should be noted that after the relay patch is welded to the control circuit board 4, the bonding strength between the first insulating terminal 2 and the second insulating terminal 3 and the control circuit board 4 is enhanced. When the vibration amplitude of the working environment of the relay is large, the insulating terminal of the present invention can better play a supporting and fixing role. The insulating terminal of the present invention is small in size, which can save raw material costs, and the lead pins of the insulating terminal do not penetrate the shell, and no glue sealing is required after assembly, which can save production time.

[0049] Example 2

[0050] refer to Figures 9 to 12 In this embodiment, based on the insulating terminal structure described in Example 1, first protruding buckles 206 are further provided on both sides of the first support portion 201, and the first protruding buckles 206 are located between the first pin 202 and the first assembly end 203; a second buckle 307 is further provided on the second assembly end 303, and the second buckle 307 is located between the second chamfers 304 on both sides; the first insulating terminal 2 is implemented with an interference fit with the first interlayer 11 through the first protruding buckle 206, and specifically, the first insulating terminal 2 is embedded in the first interlayer 11 When the first protruding buckle 206 slides on both sides of the first interlayer 11, the first insulating terminal 2 and the first interlayer 11 are interference fit; the width of the second insulating terminal 3 is slightly larger than the width of the second interlayer 12, and after the second insulating terminal 3 is embedded in the second interlayer 12, the second buckle 307 is tightly against one end of the second interlayer 12; the first protruding buckle 206 and the second buckle 307 make the first insulating terminal 2, the second insulating terminal 3 and the relay housing 1 more tightly assembled, preventing the first insulating terminal 2 and the second insulating terminal 3 from slipping out of the relay housing 1 due to external force.

[0051] The above are preferred embodiments of the present invention. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An insulating terminal structure for a relay, characterized in that: It comprises a first insulating terminal (2) and a second insulating terminal (3) externally embedded in a relay housing; the first insulating terminal (2) and the second insulating terminal (3) are simultaneously inserted into an interlayer opened at the top of the relay housing from opposite directions, replacing a dynamic spring lead-out pin and a static spring lead-out pin; The first insulating terminal (2) comprises a first supporting portion (201) and a first lead pin (202) vertically arranged on one side of the first supporting portion (201), the first insulating terminal (2) being vertically embedded in the top of the relay housing (1) and the first lead pin (202) being exposed on one side of the relay housing (1); The second insulating terminal (3) comprises a second supporting portion (301) and a second lead pin (302) vertically arranged on the second supporting portion (301), the second insulating terminal (3) is vertically embedded in the top of the relay housing (1) and the second lead pin (302) is exposed outside the relay housing (1); The first insulating terminal (2) and the second insulating terminal (3) are inserted into the relay housing (1) in opposite directions; When the relay is assembled, the first lead pin (202), the second lead pin (302) and the pins of the two coil lead terminals (6) are inserted into the assembly holes (7) provided on the control circuit board (4) and fixed on the control circuit board (4) by welding.

2. An insulating terminal structure for a relay according to claim 1, characterized in that: The first insulating terminal (2) and the second insulating terminal (3) are both inserted into an interlayer opened at the top of the relay housing (1); after being inserted into the interlayer at the top of the relay housing (1), the first insulating terminal (2) and the second insulating terminal (3) are located at the same horizontal plane, and the first insulating terminal (2) and the second insulating terminal (3) are inserted into the top of the relay housing (1) in opposite directions; and the first insulating terminal (2) and the second insulating terminal (3) are both interference fit with the interlayer.

3. An insulating terminal structure for a relay according to claim 1 or 2, characterized in that: The top of the relay housing (1) is provided with a first interlayer (11) for matching the structure of the first insulating terminal (2) and a second interlayer (12) for matching the structure of the second insulating terminal (3), and the first interlayer (11) and the second interlayer (12) are located at the same horizontal plane at the top of the relay housing (1); the thickness of the first insulating terminal (2) is the same as that of the first interlayer (11), and the thickness of the second insulating terminal (3) is the same as that of the second interlayer (12).

4. The insulating terminal structure for a relay according to claim 3, characterized in that: A first assembly end (203) is provided at one end of the first support portion (201), and the first insulating terminal (2) is inserted into the first interlayer (11) perpendicularly to the length direction of the relay housing (1) through the first assembly end (203); a second assembly end (303) is provided at one end of the second support portion (301), and the second insulating terminal (3) is inserted into the second interlayer (12) perpendicularly to the length direction of the relay housing (1) through the second assembly end (303).

5. The insulating terminal structure for a relay according to claim 4, characterized in that: First chamfers (204) are provided on both sides of the head of the first assembly end portion (203), and second chamfers (304) are provided on both sides of the head of the second assembly end portion (303).

6. The insulating terminal structure for a relay according to claim 4, characterized in that: The first insulating terminal (2) further comprises a first bent connection portion (205), the first lead pin (202) being connected to one side of the first support portion (201) via the first bent connection portion (205), the first bent connection portion (205) being located on the side of the first support portion (201) having a longer length, and the first insulating terminal (2) being an integrated structure.

7. An insulating terminal structure for a relay according to claim 4, characterized in that: First protruding buckles (206) are also provided on both sides of the first supporting portion (201), and the first protruding buckles (206) are located between the first lead-out pin (202) and the first assembly end (203).

8. The insulating terminal structure for a relay according to claim 4, characterized in that: The second insulating terminal (3) comprises a second bent connection portion (306), and the second lead pin (302) is connected to the other end of the second support portion (301) via the second bent connection portion (306); third pins (305) are also horizontally led out from both edges of the other end of the second support portion (301), and the third pins (305) and the second support portion (301) are embedded in the relay housing (1) together; the second lead pin (302) is located at the center of the side of the second support portion (301) with a smaller length; the second insulating terminal (3) is an integrated structure.

9. The insulating terminal structure for a relay according to claim 4, characterized in that: The second assembly end (303) is also provided with a second buckle (307), and the second buckle (307) is located between the second chamfers (304) on both sides.

10. The insulating terminal structure for a relay according to claim 1, characterized in that: The first insulating terminal and the second insulating terminal (3) are made of carbon structural steel.

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