A relay terminal

Abstract

The utility model relates to the technical fields of electric connector, propose a kind of relay terminal block, including the terminal block main part being equipped with electrical cavity, the electrical component assembly being set in the electrical cavity of terminal block main part, terminal lug assembly and circuit board;Electrical component assembly and terminal lug assembly are respectively fixed integratedly arranged on circuit board, and electrical component assembly and terminal lug assembly are respectively electrically connected with circuit board and constitute a terminal module that is detachably installed in the electrical cavity of terminal block main part.By integrating electrical component assembly, terminal lug assembly is integratedly arranged on the same circuit board, the compactness of overall structure and assembly efficiency are significantly improved.The electrical cavity of terminal block main part uses modular layout, so that electrical component assembly, terminal lug assembly and circuit board form electrical connection and constitute a terminal module, the terminal module is installed on terminal block main part, convenient to realize modular assembly production, suitable for mass production, and convenient for maintenance operation.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical connectors, and specifically to a relay terminal block. Background Technology

[0002] Relay terminal blocks, as key connection components in electrical control systems, are widely used to enable rapid installation and signal transmission between relays and external circuits. Traditional relay terminal blocks (as described in Prior Art Document 1) typically employ an insulating housing to separate multiple chambers, each with independently mounted terminals, spring-loaded contacts, and relays. For example, Chinese Patent No. ZL201910816820.0 discloses a composite relay terminal block where the insulating housing forms three chambers via longitudinal partitions. Each chamber contains U-shaped terminals and a spring-loaded contact structure. The relay and thermal fuse are separately installed in different positions within the housing, achieving electrical connection via wires or crimped terminals.

[0003] However, existing technologies have the following drawbacks:

[0004] The structure is dispersed and the assembly is complicated: electrical components (such as relays and thermal fuses) and wiring terminals are arranged separately, relying on wire welding or crimping, which makes the assembly process cumbersome and the reliability of wiring is greatly affected by manual operation.

[0005] Inconvenient maintenance: The components and the housing are fixedly connected, and when damaged, the entire component needs to be replaced or the housing needs to be disassembled, resulting in high maintenance costs. Utility Model Content

[0006] This invention proposes a relay terminal block that significantly improves the overall structural compactness and assembly efficiency by integrating the electrical component assembly and terminal connection piece assembly onto the same circuit board. The electrical cavity of the terminal block body adopts a modular layout, allowing the electrical component assembly, terminal connection piece assembly, and circuit board to form an electrical connection module. This module is mounted on the terminal block body, facilitating modular assembly and production, making it suitable for mass production. Furthermore, the module can be directly removed from the terminal block body for maintenance, simplifying maintenance operations.

[0007] A relay terminal block designed for this purpose includes a terminal block body with an electrical cavity, an electrical component assembly, a terminal connection piece assembly, and a circuit board disposed within the electrical cavity of the terminal block body;

[0008] The electrical component assembly and the terminal connecting piece assembly are respectively fixedly integrated on the circuit board. The electrical component assembly and the terminal connecting piece assembly are respectively electrically connected to the circuit board and form a wiring module that is detachably installed in the electrical cavity of the terminal block body.

[0009] The main body of the terminal block includes a base and a bottom plate, and a gap forming an electrical cavity is provided between the base and the bottom plate;

[0010] A connecting buckle is provided between the base and the bottom plate. The base and the bottom plate are connected by a detachable fastening method through the connecting buckle. The wiring module is detachably installed between the base and the bottom plate.

[0011] The electrical component assembly and the terminal connecting piece assembly are respectively fixed to the circuit board by welding, and the corresponding metal welding points of the electrical component assembly and the terminal connecting piece assembly are electrically connected to the circuit board.

[0012] The main body of the terminal block is equipped with terminals, and the electrical component assembly and the terminal connecting piece assembly are respectively connected to the terminals via corresponding wires.

[0013] The electrical component assembly includes a relay, which has relay pins that are soldered and fixed to the circuit board;

[0014] The main body of the terminal block includes a base, on which an open slot for mounting a relay is provided.

[0015] The electrical component assembly includes a temperature fuse, which has fuse pins that are welded and fixed to the circuit board, and a receiving groove on the base for accommodating the temperature fuse.

[0016] The terminal connecting piece assembly includes a first terminal connecting piece and an elastic piece disposed on the first terminal connecting piece;

[0017] The first terminal connecting piece is provided with a first terminal solder foot that is inserted into the circuit board and soldered and fixed on the circuit board. One or both ends of the bottom of the first terminal connecting piece are bent to form the first terminal solder foot.

[0018] The first terminal connecting piece is provided with a limiting groove. The elastic piece includes a positioning piece positioned on the bottom wall of the limiting groove and a conductive piece inclinedly disposed on the positioning piece. One end of the conductive piece is connected to the positioning piece, and the other end of the conductive piece abuts against the top wall of the limiting groove of the first terminal connecting piece.

[0019] A wire-clamping groove is formed between the conductive sheet and the inner top wall of the limiting groove for clamping the wire harness.

[0020] The main body of the terminal block has a wire-passing hole corresponding to the wire slot.

[0021] The main body of the terminal block includes a base, a wire hole is provided on the base, and the base is provided with a receiving groove corresponding to the first terminal connecting piece and the elastic piece. The terminal connecting piece assembly formed by the first terminal connecting piece and the elastic piece is positioned on the receiving groove.

[0022] The base is provided with a pressure block at the insertion end of the first terminal connecting piece and the elastic piece. The base is provided with a slot for inserting the pressure block. The pressure block is provided with a pin that is inserted into the receiving groove. The wire harness is inserted between the first terminal connecting piece and the elastic piece along the wire hole. The wire harness is limited between the pin and the inner side of the receiving groove.

[0023] The terminal connector assembly includes a second terminal connector, which has a second terminal pin that is inserted into the circuit board and soldered to the circuit board.

[0024] The beneficial technical effects of this utility model are as follows:

[0025] By integrating electrical component assemblies and terminal connection assemblies onto the same circuit board, the overall structural compactness and assembly efficiency are significantly improved. The electrical cavity of the terminal block body adopts a modular layout, allowing the electrical component assemblies, terminal connection assemblies, and circuit board to form a wiring module. This wiring module is installed on the terminal block body, facilitating modular assembly and production, suitable for mass production. Furthermore, the wiring module can be directly removed from the terminal block body for maintenance, simplifying maintenance operations. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a relay terminal block according to an embodiment of the present invention.

[0027] Figure 2 This is an exploded three-dimensional structural diagram of the relay terminal block according to an embodiment of the present invention.

[0028] Figure 3 This is an exploded perspective view of the relay terminal block in another embodiment of the present invention.

[0029] Figure 4 This is a three-dimensional cross-sectional structural diagram of a relay according to an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the electrical component assembly, terminal connecting piece assembly and circuit board electrically connected according to an embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the assembly structure between the first terminal connecting piece and the elastic piece in one embodiment of the present invention.

[0032] Figure 7 This is a schematic diagram of the solder joint structure of a circuit board according to an embodiment of the present invention.

[0033] Figure 8 This is a three-dimensional structural diagram of the base according to an embodiment of the present invention.

[0034] Figure 9This is a three-dimensional structural diagram of the second terminal connecting piece according to an embodiment of the present invention.

[0035] Figure 10 This is a three-dimensional cross-sectional structural diagram of the assembly between the base and the pressure block in one embodiment of the present invention.

[0036] Figure 11 This is a structural diagram showing the disassembled assembly of the base, bottom plate, electrical component assembly, terminal connecting piece assembly, and circuit board according to an embodiment of the present invention. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0038] See Figures 1-11 A relay terminal block includes a terminal block body 1 with an electrical cavity, an electrical component assembly 2 disposed in the electrical cavity of the terminal block body 1, a terminal connecting piece assembly 3, and a circuit board 4;

[0039] The electrical component assembly 2 and the terminal connecting piece assembly 3 are respectively fixedly integrated on the circuit board 4. The electrical component assembly 2 and the terminal connecting piece assembly 3 are respectively electrically connected to the circuit board 4 and form a detachable wiring module installed in the electrical cavity of the terminal block body 1.

[0040] By integrating the electrical component assembly 2 and the terminal connection piece assembly 3 onto the same circuit board 4, the overall structural compactness and assembly efficiency are significantly improved. The electrical cavity of the terminal block body 1 adopts a modular layout, allowing the electrical component assembly 2, the terminal connection piece assembly 3, and the circuit board 4 to form an electrical connection and constitute a wiring module. This wiring module is installed on the terminal block body 1, facilitating modular assembly and production, making it suitable for mass production. Furthermore, the wiring module can be directly removed from the terminal block body for maintenance, simplifying maintenance operations.

[0041] The main body 1 of the terminal block includes a base 5 and a bottom plate 6, and a gap forming an electrical cavity is provided between the base 5 and the bottom plate 6;

[0042] A connecting buckle 7 is provided between the base 5 and the bottom plate 6. The base 5 and the bottom plate 6 are detachably fastened together by the connecting buckle 7. The wiring module is detachably installed between the base 5 and the bottom plate 6.

[0043] The base 5 and the bottom plate 6 are detachably fastened together via connecting clips 7, forming a flexible assembly electrical cavity structure. This design simplifies the installation process of the wiring module; simply place the electrical component assembly 2 and the terminal connecting piece assembly 3 integrated on the circuit board 4 into the gap between the base 5 and the bottom plate 6, and they can be fixed by fastening. The split structure allows for quick opening of the housing during maintenance without destructive disassembly.

[0044] In this embodiment, both the base 5 and the bottom plate 6 are provided with buckle holes for engaging with the connecting buckle 7.

[0045] The electrical component assembly 2 and the terminal connecting piece assembly 3 are respectively fixed to the circuit board 4 by welding, and the corresponding metal welding points of the electrical component assembly 2 and the terminal connecting piece assembly 3 are electrically connected to the circuit board 4.

[0046] Electrical component assembly 2 and terminal connector assembly 3 are directly fixed to circuit board 4 by welding, eliminating the risk of loosening of electrical component assembly 2 and terminal connector assembly 3 on circuit board 4 and ensuring electrical connection between electrical component assembly 2, terminal connector assembly 3 and circuit board 4. The metal welding points form a low-impedance path, ensuring efficient current transmission.

[0047] The main body 1 of the terminal block is equipped with a terminal block 11. The electrical component assembly 2 and the terminal connecting piece assembly 3 are respectively connected to the terminal block 11 through corresponding wires 10. The terminal block 11 is connected to the electrical component assembly 2 and the terminal connecting piece assembly 3 through the wires 10, realizing flexible docking between the external circuit and the internal module.

[0048] The electrical component assembly 2 includes a relay 8, which has relay pins 8.1 that are soldered and fixed to the circuit board 4;

[0049] The main body 1 of the terminal block includes a base 5, and the base 5 is provided with an open slot 5.1 for installing the relay 8.

[0050] The relay 8 is soldered and fixed to the circuit board 4 via relay pin 8.1, forming an electrical connection with the circuit board 4. The opening slot 5.1 of the base 5 provides precise positioning and mechanical support for the relay 8, preventing relative displacement of the relay 8 within the base 5.

[0051] The electrical component assembly includes a temperature fuse 9, which has fuse pins 9.1 that are welded and fixed to the circuit board 4, and a receiving groove 5.2 on the base 5 for accommodating the temperature fuse 9.

[0052] The temperature fuse 9 is soldered to the circuit board 4 via fuse pin 9.1, achieving electrical integration with the circuit board 4. The receiving groove 5.2 of the base 5 provides physical protection for the temperature fuse 9, preventing damage from external forces. The soldering and fixing of the fuse pin 9.1 prevents the temperature fuse 9 from becoming loose or having poor contact with the circuit board 4, ensuring the real-time temperature sensing of the temperature fuse 9 and quickly triggering the protection action.

[0053] The terminal connecting piece assembly 3 includes a first terminal connecting piece 12 and an elastic piece 13 disposed on the first terminal connecting piece 12;

[0054] The first terminal connecting piece 12 is provided with a first terminal solder foot 12.1 that is inserted into the circuit board 4 and soldered and fixed on the circuit board 4. One or both ends of the bottom of the first terminal connecting piece 12 are bent to form the first terminal solder foot 12.1.

[0055] The first terminal connecting piece 12 is provided with a limiting groove 12.2. The elastic piece 13 includes a positioning piece 13.1 positioned on the bottom wall of the limiting groove 12.2 and a conductive piece 13.2 inclinedly disposed on the positioning piece 13.1. One end of the conductive piece 13.2 is connected to the positioning piece 13.1, and the other end of the conductive piece 13.2 abuts against the top wall of the limiting groove 12.2 of the first terminal connecting piece 12.

[0056] A wire clamping groove 14 for clamping the wire harness is formed between the conductive sheet 13.2 and the inner top wall of the limiting groove 12.2;

[0057] The main body 1 of the terminal block is provided with a wire hole 15 corresponding to the wire slot 14.

[0058] The first terminal connecting piece 12 and the elastic piece 13 form a wire-holding groove 14. The conductive piece 13.2 of the elastic piece 13 provides continuous elasticity to ensure the wire harness is securely held in place and prevent it from coming loose. The wire-passing hole 15 guides the wire harness insertion. The bending design of the first terminal solder foot 12.1 increases the soldering area and improves mechanical strength.

[0059] The main body 1 of the terminal block includes a base 5, a wire hole 15 is provided on the base 5, and the base 5 is provided with a receiving groove 5.3 corresponding to the first terminal connecting piece 12 and the elastic piece 13. The terminal connecting piece assembly 3 formed by the first terminal connecting piece 12 and the elastic piece 13 is positioned on the receiving groove 5.3.

[0060] The receiving groove 5.3 of the base 5 provides rigid support for the first terminal connecting piece 12 and the elastic piece 13. The alignment design of the wire hole 15 and the receiving groove 5.3 simplifies the wire harness insertion operation.

[0061] The base 5 is provided with a pressure block 16 corresponding to the insertion end of the first terminal connecting piece 12 and the elastic piece 13. The base 5 is provided with a slot 5.4 for inserting the pressure block 16. The pressure block 16 is provided with a pin 16.1 inserted into the receiving groove 5.3. The wire harness is inserted between the first terminal connecting piece 12 and the elastic piece 13 along the wire hole 15. The wire harness is limited between the pin 16.1 and the inner side of the receiving groove 5.3.

[0062] The pressure block 16 is inserted into the slot 5.4 through the pin 16.1 to limit the wire harness. The wire harness is limited vertically between the first terminal connecting piece 12 and the elastic piece 13, and the wire harness is limited horizontally between the pin 16.1 and the inner side of the receiving groove 5.3.

[0063] The terminal connector assembly 3 includes a second terminal connector 17, which has a second terminal solder pad 17.1 that is inserted into the circuit board 4 and soldered and fixed on the circuit board 4.

[0064] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A relay terminal block, characterized in that: It includes a terminal block body (1) with an electrical cavity, an electrical component assembly (2) disposed in the electrical cavity of the terminal block body (1), a terminal connecting piece assembly (3) and a circuit board (4); The electrical component assembly (2) and the terminal connecting piece assembly (3) are respectively fixedly integrated on the circuit board (4). The electrical component assembly (2) and the terminal connecting piece assembly (3) are respectively electrically connected to the circuit board (4) and form a detachable wiring module installed in the electrical cavity of the terminal block body (1).

2. The relay terminal block according to claim 1, characterized in that: The main body (1) of the terminal block includes a base (5) and a bottom plate (6), and a gap is provided between the base (5) and the bottom plate (6) to form an electrical cavity; A connecting buckle (7) is provided between the base (5) and the bottom plate (6). The base (5) and the bottom plate (6) are detachably fastened together by the connecting buckle (7). The wiring module is detachably installed between the base (5) and the bottom plate (6).

3. The relay terminal block according to claim 1, characterized in that: The electrical component assembly (2) and the terminal connecting piece assembly (3) are respectively fixed on the circuit board (4) by welding, and the corresponding metal welding points of the electrical component assembly (2) and the terminal connecting piece assembly (3) are electrically connected to the circuit board (4).

4. The relay terminal block according to claim 1, characterized in that: The main body (1) of the terminal block is provided with terminals (11), and the electrical component assembly (2) and the terminal connecting piece assembly (3) are respectively connected to the terminals (11) through corresponding wires (10).

5. The relay terminal block according to claim 4, characterized in that: The electrical component assembly (2) includes a relay (8), which has relay pins (8.1) that are soldered and fixed to the circuit board (4). The main body (1) of the terminal block includes a base (5), and the base (5) is provided with an open slot (5.1) for installing a relay (8).

6. The relay terminal block according to claim 4, characterized in that: The electrical component assembly includes a temperature fuse (9), which has fuse pins (9.1) that are welded and fixed to the circuit board (4), and a receiving groove (5.2) for accommodating the temperature fuse (9) on the base (5).

7. The relay terminal block according to claim 4, characterized in that: The terminal connecting piece assembly (3) includes a first terminal connecting piece (12) and an elastic piece (13) disposed on the first terminal connecting piece (12). The first terminal connecting piece (12) is provided with a first terminal solder foot (12.1) that is inserted into the circuit board (4) and soldered and fixed on the circuit board (4). One or both ends of the bottom of the first terminal connecting piece (12) are bent to form the first terminal solder foot (12.1). The first terminal connecting piece (12) is provided with a limiting groove (12.2). The elastic piece (13) includes a positioning piece (13.1) positioned on the bottom wall of the limiting groove (12.2) and a conductive piece (13.2) inclinedly disposed on the positioning piece (13.1). One end of the conductive piece (13.2) is connected to the positioning piece (13.1), and the other end of the conductive piece (13.2) abuts against the top wall of the limiting groove (12.2) of the first terminal connecting piece (12). A wire clamping groove (14) for clamping the wire harness is formed between the conductive sheet (13.2) and the inner top wall of the limiting groove (12.2). The main body (1) of the terminal block is provided with a wire hole (15) corresponding to the wire slot (14).

8. The relay terminal block according to claim 7, characterized in that: The main body (1) of the terminal block includes a base (5), a wire hole (15) is provided on the base (5), and the base (5) is provided with a receiving groove (5.3) corresponding to the first terminal connecting piece (12) and the elastic piece (13). The terminal connecting piece assembly (3) formed by the first terminal connecting piece (12) and the elastic piece (13) is positioned on the receiving groove (5.3).

9. The relay terminal block according to claim 8, characterized in that: The base (5) is provided with a pressure block (16) at the insertion end of the first terminal connecting piece (12) and the elastic piece (13). The base (5) is provided with a slot (5.4) for inserting the pressure block (16). The pressure block (16) is provided with a pin (16.1) inserted into the receiving groove (5.3). The wire harness is inserted between the first terminal connecting piece (12) and the elastic piece (13) along the wire hole (15). The wire harness is limited between the pin (16.1) and the inner side of the receiving groove (5.3).

10. The relay terminal block according to claim 7, characterized in that: The terminal connector assembly (3) includes a second terminal connector (17), which has a second terminal solder foot (17.1) that is inserted into the circuit board (4) and soldered and fixed on the circuit board (4).

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