Externally attached relay protection assembly

Abstract

The utility model discloses an externally attached relay protection assembly, which belongs to the field of relays, and comprises a distribution box and a relay positioned in the distribution box, and the input end or the output end of the relay is provided with a circuit parallel assembly. Compared with the prior art, the utility model has the advantages that the circuit parallel connection assembly is arranged on the wiring end of the relay, a plurality of wiring terminals are connected through branches on the shunt conducting strip, and the upper surfaces of the wiring terminals are fixed through the lower piezoelectric patch, so that the current transmission of the lower piezoelectric patch is isolated; and an insulating interlayer is adhered to the upper part of the lower piezoelectric patch, and an L-shaped pressing fixing plate is mounted above the insulating interlayer, so that the L-shaped pressing fixing plate and the inner wall of the convex groove form a buckling structure, and opening and closing of the lower piezoelectric patch are completed.

Description

Technical Field

[0001] This utility model relates to the field of relays, specifically to an external relay protection component. Background Technology

[0002] In the process of connecting existing circuits, in order to protect various devices and switches in the circuit, several external relays are usually installed in the circuit for protection. These external relays are usually installed in front of the distribution box, in the middle of the control circuit, and in front of the load, depending on the requirements.

[0003] To protect the safety of control circuits and relays, external relays are usually installed inside a distribution box. The distribution box isolates the control circuits from the influence of the external environment, and the controllers of each circuit are connected in series or parallel to the input and output terminals of the external relays.

[0004] During circuit connection, it is common for multiple wires to be connected to the same relay terminal at the same time. If there are only two or three wires, multiple terminals can be connected to the same input port at the same time. However, if there are too many terminals, it will be difficult to connect the terminals. Utility Model Content

[0005] The technical problem this invention aims to solve is that the wiring port size of existing external relay protection components is limited, making it difficult to connect multiple terminals simultaneously.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: an external relay protection component, including a distribution box and a relay located inside the distribution box. The input or output end of the relay is provided with a circuit parallel component. The circuit parallel component includes a shunt conductive sheet connected to the input or output end of the relay by a bolt structure, a protective shell wrapped around the shunt conductive sheet, a lower pressure plate located above the branch of the shunt conductive sheet, an insulating layer adhered above the lower pressure plate, and an L-shaped lower pressure fixing plate located above the insulating layer. One side of the protective shell is provided with a convex groove located above the branch of the shunt conductive sheet, and the lower pressure plate, the insulating layer, and the L-shaped lower pressure fixing plate are all located inside the convex groove.

[0007] As an improvement, the inner wall of the convex groove is provided with several limiting components to restrict the rebound of the L-shaped pressing and fixing plate. The limiting components include a hollow pin passing through the side wall of the convex groove, a pressure spring located between the bottom surface of the hollow pin and the bottom surface of the side hole of the convex groove, and a limiting pin passing through the central groove of the hollow pin and the side of the convex groove.

[0008] As an improvement, the upper surface of the hollow pin is provided with a sloping surface to facilitate the downward pressing of the L-shaped pressing and fixing plate.

[0009] As an improvement, the bottom surface of the lower piezoelectric sheet is provided with protrusions corresponding to the annular terminals.

[0010] As an improvement, the L-shaped pressing fixing plate is made of insulating material, and the L-shaped pressing fixing plate is connected to the side wall of the convex groove through a pin structure.

[0011] As an improvement, the insulating layer is made of ABS plastic.

[0012] The advantages of this utility model compared with the prior art are as follows: This device has a circuit parallel assembly installed on the relay terminal, which connects multiple terminals through the branching on the current shunt conductive sheet, and fixes the upper surface of the terminal through the lower pressure sheet. In order to isolate the transmission of current of the lower pressure sheet, an insulating layer is glued on the upper part of the lower pressure sheet, and an L-shaped lower pressure fixing plate is installed on the upper part of the insulating layer, so that it forms a snap-fit ​​structure with the inner wall of the convex groove, thereby completing the opening and closing of the lower pressure sheet. Attached Figure Description

[0013] Figure 1 This is a general structural diagram of an external relay protection component according to this utility model.

[0014] Figure 2 This is a circuit parallel component structure diagram of an external relay protection component according to this utility model.

[0015] Figure 3 This is a cross-sectional view of the circuit parallel component of an external relay protection component according to this utility model.

[0016] Figure 4 This is an exploded view of the circuit parallel component of an external relay protection component according to this utility model.

[0017] Figure 5 yes Figure 4 A magnified view of part A.

[0018] As shown in the figure: 1. Distribution box; 2. Relay; 3. Circuit parallel assembly; 31. Shunt conductive sheet; 32. Protective shell; 321. Convex groove; 33. Lower pressure sheet; 331. Convex post; 34. Insulating layer; 35. L-shaped lower pressure fixing plate; 4. Limiting assembly; 41. Hollow pin; 411. Inclined slope; 42. Pressure spring; 43. Limiting pin. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] As per the instruction manual Figure 1 , 2As shown, it includes a distribution box 1 and a relay 2 located inside the distribution box 1. The input or output terminal of the relay 2 is provided with a circuit parallel assembly 3, wherein the circuit parallel assembly 3 is fixed by screws on the terminal of the relay 2, thereby forming a terminal block that can be disassembled at any time.

[0021] As per the instruction manual Figure 3 , 4 As shown in Figure 5, the parallel circuit assembly 3 includes a shunt conductive sheet 31 connected to the input or output end of the relay 2 by a bolt structure, a protective shell 32 wrapped around the shunt conductive sheet 31, a lower pressure plate 33 located above the branch of the shunt conductive sheet 31, an insulating layer 34 attached above the lower pressure plate 33, and an L-shaped lower pressure fixing plate 35 located above the insulating layer 34. In order to facilitate the connection between the shunt conductive sheet 31 and the relay 2, threaded through holes corresponding to the screws of the relay 2 are provided on both sides of the shunt conductive sheet 31 to facilitate the adjustment of the direction of the branch of the shunt conductive sheet 31. The shunt conductive sheet 31 can be bent freely to reduce the possibility of electric shock to the protruding part of the shunt conductive sheet 31.

[0022] To facilitate the fixing of the lower voltage plate 33 when connecting to the ring terminal, the bottom surface of the lower voltage plate 33 is provided with a protrusion 331 corresponding to the ring terminal. The insulating layer 34 is mostly made of ABS plastic (ABS plastic has high impact resistance, good heat resistance, high surface smoothness, and is easy to process, and is widely used in home appliances, electronics, packaging, medical devices and other fields).

[0023] To prevent the pressure plate 33 and the insulating layer 34 from falling off during use, a convex groove 321 is provided on one side of the protective shell 32 above the branch of the current shunt conductive plate 31. The pressure plate 33, the insulating layer 34, and the L-shaped pressure fixing plate 35 are all located inside the convex groove 321. To avoid electric shock, the L-shaped pressure fixing plate 35 is made of insulating material and is connected to the side wall of the convex groove 321 by a pin structure. The L-shaped pressure fixing plate 35 is connected to the side hole of the convex groove 321 by a pin, so that the L-shaped pressure fixing plate 35 forms a snap-fit ​​structure to control the position of the current shunt conductive plate 31, thereby facilitating the removal and placement of the wiring terminals.

[0024] To prevent the L-shaped pressing plate 35 from rotating due to external force, the inner wall of the convex groove 321 is provided with several limiting components 4 to restrict the rebound of the L-shaped pressing plate 35. The limiting components 4 include a hollow pin 41 passing through the side wall of the convex groove 321, a pressure spring 42 located between the bottom surface of the hollow pin 41 and the bottom surface of the side hole of the convex groove 321, and a limiting pin 43 passing through the central groove of the hollow pin 41 and the side of the convex groove 321. The hollow pin 41 moves back and forth along the limiting pin 43. Through the elastic force of the pressure spring 42, the hollow pin 41 is always in the extended state, thereby preventing the L-shaped pressing plate 35 from rotating in the opposite direction due to external force.

[0025] In order to ensure that the L-shaped pressing and fixing plate 35 can slide smoothly into the convex groove 321 when it is pressed down, the upper surface of the hollow pin 41 is provided with a slope 411 to facilitate the pressing down of the L-shaped pressing and fixing plate 35.

[0026] In a specific implementation of this invention, the terminal block is placed between the pressure plate 33 and the shunt conductive plate 31, and the center hole of the terminal block is secured on the protrusion 331. Then, the L-shaped pressure fixing plate 35 is rotated to fix it under the hollow pin 41. During the rotation of the L-shaped pressure fixing plate 35, the pressure plate 33 is pressed down, which fixes the terminal block, thereby completing the connection of multiple sets of terminals at the same wiring position.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An external relay protection assembly, comprising a distribution box (1) and a relay (2) located inside the distribution box (1), characterized in that: The input or output end of the relay (2) is provided with a circuit parallel assembly (3). The circuit parallel assembly (3) includes a shunt conductive sheet (31) connected to the input or output end of the relay (2) by a bolt structure, a protective shell (32) wrapped around the shunt conductive sheet (31), a lower pressure sheet (33) located above the branch of the shunt conductive sheet (31), an insulating layer (34) attached above the lower pressure sheet (33), and an L-shaped lower pressure fixing plate (35) located above the insulating layer (34). One side of the protective shell (32) is provided with a convex groove (321) located above the branch of the shunt conductive sheet (31), and the lower pressure sheet (33), the insulating layer (34), and the L-shaped lower pressure fixing plate (35) are all located inside the convex groove (321). The inner wall of the convex groove (321) is provided with a plurality of limiting components (4) for limiting the rebound of the L-shaped pressing fixing plate (35). The limiting components (4) include a hollow pin (41) passing through the side wall of the convex groove (321), a pressure spring (42) located between the bottom surface of the hollow pin (41) and the bottom surface of the side hole of the convex groove (321), and a limiting pin (43) passing through the central groove of the hollow pin (41) and the side of the convex groove (321).

2. The external relay protection assembly according to claim 1, characterized in that: The upper surface of the hollow pin (41) is provided with a sloping slope (411) to facilitate the downward pressing of the L-shaped pressing fixing plate (35).

3. The external relay protection assembly according to claim 1, characterized in that: The bottom surface of the lower piezoelectric sheet (33) is provided with a protrusion (331) corresponding to the annular terminal.

4. An external relay protection assembly according to claim 1, characterized in that: The L-shaped pressing fixing plate (35) is made of insulating material, and the L-shaped pressing fixing plate (35) is connected to the side wall of the convex groove (321) by a pin structure.

5. An external relay protection assembly according to claim 1, characterized in that: The insulating layer (34) is made of ABS plastic.

Images