Exposed wiring terminal and application structure thereof

Abstract

The utility model discloses an exposed wiring terminal, which comprises a plastic framework, a plurality of locking screws, a plurality of locking hoops, a plurality of static conducting sheets and a waterproof ring, a plurality of mounting grooves are uniformly arranged on one side of the plastic framework at intervals, and the plurality of locking screws, the plurality of locking hoops and the plurality of static conducting sheets correspond to the plurality of mounting grooves. The plurality of static conducting sheets are correspondingly arranged in the mounting grooves, any three static conducting sheets are respectively welded with a PE / L relay and an N relay on the power control circuit board, the locking hoop is embedded in the mounting grooves and is used for wiring operation, one end of the plastic framework is provided with a wire inlet, a cable wire extends into the locking hoop through the wire inlet, and the cable wire extends into the locking hoop through the wire inlet. The locking screw penetrates through the plastic framework and the locking hoop to lock and fix the cable, the waterproof ring is arranged on the side wall of the side, provided with the mounting groove, of the plastic framework, and the plastic framework is connected with the charging pile shell through a bolt and presses the waterproof ring. According to the utility model, the design cost of the charging pile can be effectively reduced, waterproof reliability is improved, and on-site installation procedures are effectively reduced. The utility model also discloses an application structure of the exposed wiring terminal.

Description

Technical Field

[0001] The utility model relates to an exposed type wiring terminal and an application structure thereof, belonging to the technical field of electrical components. Background Art

[0002] As the number of electric passenger car users continues to increase globally, AC charging stations for electric vehicles are becoming increasingly popular. Consumers are also becoming more and more demanding on the price of AC charging stations, prompting manufacturers to launch simple and cost-effective AC charging station products.

[0003] Traditional AC charging piles all have a main user interface, namely the input power interface. Figure 1 According to the standard GB / T 18487.1-2023, Mode 3 and Connection Method C, power interface types can be divided into outgoing cable type and exposed terminal type. The traditional outgoing cable type uses cables pre-wired by the AC charging pile manufacturer. During installation, the installer connects the cables to the user's distribution box according to the correct connection method. The exposed terminal type uses wiring terminals on the AC charging pile. The installer needs to prepare a separate cable to connect to the distribution box.

[0004] For charging piles with an outlet design, the presence of this cable increases the cost of the pile, making connection difficult for users who already have wiring installed or who are far from the distribution box. Traditional designs with built-in terminal blocks require cables to be connected between the power circuit board and the terminals, increasing material costs. Furthermore, installation requires opening the AC charging pile casing, which increases the number of steps and can easily lead to waterproofing failures later due to improper installation. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that traditional outlet-type charging piles are expensive and prone to wiring difficulties, and traditional charging piles with built-in terminal blocks require cables to be connected between the power circuit board inside the pile and the terminals, which increases material costs. In addition, the AC charging pile casing needs to be opened during installation, which has many steps and is prone to waterproof failure due to improper installation.

[0006] In order to solve the above technical problems, the utility model provides an exposed terminal block and its application structure, which can effectively reduce design costs, improve waterproof reliability and effectively reduce on-site installation procedures.

[0007] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0008] In the first aspect, the utility model provides an exposed terminal block, including a plastic frame, a locking screw, a locking clamp, an electrostatic conductor and a waterproof ring. A plurality of mounting grooves are evenly spaced on one side of the plastic frame. The locking screw, locking clamp and electrostatic conductor are arranged in correspondence with the mounting grooves. Multiple electrostatic conductors are arranged in correspondence with the mounting grooves, and any three electrostatic conductors are welded and fixed to the PE relay, L relay and N relay on the power control circuit board respectively. The locking clamp is embedded in the mounting groove for wiring operation and electrical connection with the electrostatic conductor. One end of the locking screw passes through the plastic frame and the locking clamp, extends into the locking clamp and is threadedly connected to the plastic frame. An inlet is provided on the end of the plastic frame away from the locking screw, and the cable wiring extends into the locking clamp through the inlet. The waterproof ring is arranged on the side wall of the plastic frame on the side where the mounting groove is opened. The plastic frame is connected to the charging pile shell by bolts and the waterproof ring is pressed.

[0009] Preferably, the plastic frame is a plug-in type fence terminal seat, the electrostatic conductor is an L-shaped copper sheet of the fence terminal, and the locking clamp is a wiring frame.

[0010] In the second aspect, the utility model provides an application structure of an exposed terminal block, including the above-mentioned exposed terminal block and a charging pile, a line incoming compartment is provided on the outer wall of one side of the shell of the charging pile, and a side of the power control circuit board provided with a PE relay, an L relay and an N relay extends into the line incoming compartment, the exposed terminal block is welded to the power control circuit board through the electrostatic guide plate, and the plastic frame is in contact with the inner wall of the line incoming compartment through the waterproof ring.

[0011] Preferably, the incoming wire bin is arranged close to the bottom wall of the shell of the charging pile, and a wire insertion port connected to the incoming wire bin is opened on the bottom wall of the charging pile shell. The wire insertion port is located on one side of the opening of the incoming wire bin and is provided with an open groove, and a cable strip is detachably provided on the side wall of the opening groove.

[0012] Preferably, the charging pile is provided with a waterproof cover on the outer wall of the opening of the line compartment in a detachable manner through a snap structure.

[0013] Preferably, an incoming line mark is provided on the inner wall of the incoming line bin.

[0014] The utility model provides an exposed terminal block and its application structure, which has the following advantages:

[0015] AC charging piles that use this onboard exposed terminal design not only save the cost of three 10cm to 20cm long, 6 square (calculated at 7kW) cables between the power circuit board inside the pile and the pile terminal (including cable processing and assembly costs); they also reduce the number of nodes in the high-current loop and the heat generated by the node contact resistance, lowering the temperature inside the AC charging pile and increasing the service life of the charging pile. Furthermore, they effectively reduce the number of installation procedures and labor hours at the charging pile installation site, directly reducing installation costs. In summary, AC charging piles that use this onboard exposed terminal design reduce costs, improve product reliability, and extend product service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the control and guidance circuit schematic diagram of standard mode 3 connection method C;

[0017] Figure 2 This is a circuit schematic diagram of the application structure of an exposed terminal block of the utility model;

[0018] Figure 3 This is a schematic structural diagram of an exposed terminal block according to the utility model;

[0019] Figure 4 This is a front view of an exposed terminal block according to the present invention;

[0020] Figure 5 This is a schematic diagram of the exploded structure of an exposed terminal block of the utility model.

[0021] Figure 6 This is a schematic diagram of the application structure of an exposed terminal block according to the utility model;

[0022] Figure 7 This is an exploded structural diagram of the utility model that mainly embodies the exposed terminal block and its application structure connection relationship;

[0023] In the picture:

[0024] 1-Exposed terminal block; 11-Plastic frame; 111-Mounting slot; 112-Wire inlet; 12-Locking screw; 13-Locking clamp; 14-Electrostatic guide; 15-Waterproof ring; 2-Charging pile; 21-Wire inlet compartment; 22-Wire plug port; 23-Opening slot; 3-Cable pressure strip; 4-Wire inlet mark; 5-Waterproof cover. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this utility model, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts are within the scope of protection of this utility model.

[0026] Reference Figures 1-4 The utility model provides an exposed terminal block, including a plastic frame 11, a locking screw 12, a locking clamp 13, an electrostatic guide plate 14 and a waterproof ring 15. The plastic frame 11 is a plug-in type fence terminal seat, the electrostatic guide plate 14 is an L-shaped copper plate of the fence terminal, and the locking clamp 13 is a wiring frame.

[0027] A plurality of mounting grooves 111 are evenly spaced on one side of the plastic frame 11. In this embodiment, there are preferably three mounting grooves 111. A plurality of locking screws 12, locking clamps 13 and electrostatic guides 14 are installed corresponding to the mounting grooves 111. The three electrostatic guides 14 are correspondingly inserted into the mounting grooves 111 and are respectively welded to the PE relay, L relay and N relay on the power control circuit board. The locking clamp 13 is embedded in the mounting groove 111 for cable wiring operation and connection with the electrostatic guide 1 4, one end of the locking screw 12 passes through the plastic frame 11 and the locking clamp 13, extends into the locking clamp 13 and is threadedly connected to the plastic frame 11, and an inlet 112 is provided at the end of the plastic frame 11 away from the locking screw 12. The cable connection extends into the locking clamp 13 through the inlet 112. The waterproof ring 15 is bonded and fixed to the side wall of the plastic frame 11 on one side of the mounting groove 111. The plastic frame 11 is connected to the outer shell of the charging pile 2 by bolts and the waterproof ring 15 is pressed.

[0028] Reference Figure 1 The application structure of the exposed terminal block of the present invention consists of an exposed terminal block 1 and a charging pile 2. An incoming wire compartment 21 is integrally injection-molded on the outer wall of one side of the shell of the charging pile 2. One side of the power control circuit board provided with PE relay, L relay and N relay extends into the incoming wire compartment 21. The exposed terminal block 1 is welded to the power control circuit board through an electrostatic guide 14. The plastic frame 11 contacts the inner wall of the incoming wire compartment 21 through a waterproof ring 15. The plastic frame 11 is fixed to the inner wall of the feed bin by two bolts on the shell of the charging pile 2, and the waterproof ring 15 is pressed at the same time, thereby effectively achieving waterproofing and exposing the exposed terminal block 1 in the incoming wire compartment 21.

[0029] Furthermore, the incoming wire bin 21 is arranged near the bottom wall of the shell of the charging pile 2, and a wire socket 22 connected to the incoming wire bin 21 is opened on the bottom wall of the shell of the charging pile 2. The wire socket 22 is located on one side of the opening of the incoming wire bin 21 and is provided with an opening groove 23. The cable strip 3 is detachably installed on the side wall of the opening groove 23 by screws.

[0030] Furthermore, the charging pile 2 is located on the outer wall of the opening of the incoming line compartment 21, and a waterproof cover 5 is detachably installed through a snap-on structure. This is a prior art and will not be elaborated on. An incoming line mark 4 is provided on the inner wall of the incoming line compartment 21. When in use, the user opens the waterproof cover 5 at the bottom of the AC charging pile 2. The cover adopts a snap-on structure for easy disassembly. The user cable is connected to the exposed terminal 1 according to the line sequence mark, the three locking screws 12 are tightened, the cable strip 3 is tightened, and the cover is installed to complete the wiring, which is convenient and quick.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be considered as the scope of protection of the present invention. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the present invention, which are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An exposed terminal block, characterized in that: The invention comprises a plastic frame (11), a locking screw (12), a locking hoop (13), an electrostatic conductive sheet (14) and a waterproof ring (15); a plurality of mounting grooves (111) are evenly spaced on one side of the plastic frame (11); a plurality of the locking screws (12), the locking hoop (13) and the electrostatic conductive sheet (14) are arranged corresponding to the mounting grooves (111); the plurality of electrostatic conductive sheets (14) are arranged correspondingly in the mounting grooves (111); and any three electrostatic conductive sheets (14) are respectively welded and fixed to the PE relay, the L relay and the N relay on the power control circuit board; the locking hoop (13) is embedded in the mounting groove (111). The inner portion is used for wiring operation and electrical connection with the electrostatic conductor (14); one end of the locking screw (12) is penetrated by the plastic frame (11) and the locking clamp (13) is inserted into the locking clamp (13) and is threadedly connected to the plastic frame (11); an end of the plastic frame (11) away from the locking screw (12) is provided with an inlet (112); the cable connection is inserted into the locking clamp (13) through the inlet (112); the waterproof ring (15) is provided on a side wall of the plastic frame (11) on which the mounting groove (111) is provided; the plastic frame (11) is connected to the outer shell of the charging pile (2) by bolts and the waterproof ring (15) is pressed.

2. The exposed terminal according to claim 1, characterized in that: The plastic frame (11) is a plug-in type fence terminal seat, the electrostatic guide plate (14) is an L-shaped copper plate of the fence terminal, and the locking clamp (13) is a wiring frame.

3. An application structure of an exposed terminal block, characterized in that: The invention comprises an exposed terminal block (1) and a charging pile (2) as described in any one of claims 1 to 2, wherein a line inlet compartment (21) is provided on the outer wall of one side of the shell of the charging pile (2), a side of a power control circuit board provided with a PE relay, an L relay and an N relay extends into the line inlet compartment (21), the exposed terminal block (1) is welded to the power control circuit board through the electrostatic guide (14), and the plastic frame (11) contacts the inner wall of the line inlet compartment (21) through the waterproof ring (15).

4. The application structure of an exposed terminal block according to claim 3, characterized in that: The incoming wire bin (21) is arranged close to the bottom wall of the shell of the charging pile (2); a wire insertion port (22) communicating with the incoming wire bin (21) is provided on the bottom wall of the shell of the charging pile (2); an opening slot (23) is provided on one side of the opening of the incoming wire bin (21); and a cable pressure strip (3) is detachably provided on the side wall of the opening slot (23).

5. The application structure of an exposed terminal block according to claim 3, characterized in that: A waterproof cover plate (5) is detachably provided on the outer wall of the charging pile (2) at the opening of the incoming line compartment (21) via a snap-fit structure.

6. The application structure of an exposed terminal block according to claim 3, characterized in that: An incoming wire mark (4) is provided on the inner wall of the incoming wire bin (21).

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