Built-in bypass type motor soft starter

Abstract

The utility model discloses a built-in bypass type motor soft starter which is good in stability, convenient in wiring and not easy in screw falling. According to the technical scheme, the wiring terminal block comprises a base and an upper cover covering the upper end of the base, and wiring terminal blocks are integrally formed at the two ends of the base and the two ends of the upper cover. The wiring terminal strip comprises front terminal seats which are integrally formed at two ends of the upper cover, rear terminal seats which are integrally formed at two ends of the base, and a group of wiring terminal assemblies which are arranged in the front terminal seats and the rear terminal seats; the wiring terminal assembly comprises a wiring frame, a wiring screw which is in threaded connection with the top of the wiring frame, and a wiring gasket which is arranged in the wiring frame.

Description

Technical Field

[0001] This utility model belongs to the field of soft starters, specifically relating to a built-in bypass motor soft starter. Background Technology

[0002] An integrated bypass motor soft starter is a device used to control the starting process of an asynchronous motor. It achieves smooth acceleration by gradually increasing the voltage during motor startup, thereby reducing starting current and mechanical shock. Traditional integrated bypass motor soft starters have terminal blocks at both ends, with external wires fixed to the terminal blocks by screws, making wiring inconvenient. Directly mounting traditional terminal blocks onto the motor soft starter suffers from poor stability, complicated wiring, and the risk of screws coming loose. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a built-in bypass motor soft starter with good stability, convenient wiring and screws that are not easy to fall off.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a base and an upper cover covering the upper end of the base. The base and the upper cover are integrally formed with terminal blocks at both ends. The terminal blocks include a front terminal block integrally formed at both ends of the upper cover, a rear terminal block integrally formed at both ends of the base, and a set of terminal assemblies disposed in the front terminal block and the rear terminal block. The terminal assembly includes a wiring frame, a wiring screw screwed to the top of the wiring frame, and a wiring washer disposed in the wiring frame. The front end of the front terminal block is provided with a screwdriver hole communicating with the wiring screw, and the diameter of the screwdriver hole is smaller than the outer diameter of the wiring screw. The rear terminal block is provided with a wiring port communicating with the wiring frame, and the inner cavity is provided with a positioning groove. The front end of the wiring frame is slidably disposed in the positioning groove.

[0005] The rear terminal block is provided with a terminal block socket above the wiring port. The base is provided with a terminal block. The upper end of the terminal block passes through the wiring frame and is inserted into the terminal block socket. The lower end is integrally formed with a PIN pin that is soldered to the PCB board.

[0006] The inner walls on both sides of the front terminal block are provided with at least two first positioning ribs that abut against the rear sides of the wiring frame, and the inner walls on both sides of the positioning groove are provided with two second positioning ribs that abut against the front sides of the wiring frame.

[0007] The wiring pad is tile-shaped and has a groove in the middle.

[0008] The bottom of the wiring frame has a hole.

[0009] The lower end of the rear terminal block is provided with screws for fixing the PCB board.

[0010] The base has heat dissipation vents at both ends, and a set of rivet posts is provided on one of the heat dissipation vents, through which a fan is installed.

[0011] The front end of the positioning groove is provided with a first positioning slope, and the wiring frame is provided with a second positioning slope that positions and cooperates with the first positioning slope.

[0012] The advantages of the built-in bypass motor soft starter of this utility model are as follows: 1. When rotating the wiring screw, the wiring frame can slide very stably in the terminal block. After the wiring frame presses the wire, the wire directly forms a circuit with the PCB board through the terminal block, making wiring more convenient; 2. The wiring screw will not fall off the terminal block.

[0013] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the built-in bypass motor soft starter of this utility model;

[0015] Figure 2 This is a cross-sectional view of the built-in bypass motor soft starter of this utility model;

[0016] Figure 3 This is a structural schematic diagram of the base of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the front cover of this utility model;

[0018] Figure 5 This is a structural schematic diagram of the terminal block assembly of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the gasket of this utility model. Detailed Implementation

[0020] Reference Figure 1-6As shown, the built-in bypass motor soft starter of this utility model includes a base 1 and an upper cover 2 covering the upper end of the base 1. Terminal blocks 3 are integrally formed at both ends of the base 1 and the upper cover 2. Typically, the upper terminal block 3 is the power input terminal, and the lower terminal block 3 is the power output terminal. The terminal blocks 3 include a front terminal block 4 integrally formed at both ends of the upper cover 2, a rear terminal block 5 integrally formed at both ends of the base 1, and a set of terminal assembly 6 disposed within the front terminal block 4 and the rear terminal block 5. The terminal assembly 6 includes a wiring frame 7, a wiring screw 8 screwed to the top of the wiring frame 7, and a wiring washer 9 disposed within the wiring frame 7. The front end of the front terminal block 4 has a screwdriver hole 10 communicating with the wiring screw 8, and the diameter of the screwdriver hole 10 is smaller than the outer diameter of the wiring screw 8. The rear terminal block 5 has a wiring port 12 communicating with the wiring frame 7, and the inner cavity of the rear terminal block 5 has a positioning groove 13. The front end of the wiring frame 7 is slidably disposed in the positioning groove 13. The rear terminal block 5 has a wiring strip socket 22 above the wiring port 12. The base 1 has a wiring strip 18. The upper end of the wiring strip 18 passes through the wiring frame 7 and is inserted into the wiring strip socket 22 to fix the upper end of the wiring strip 18. The upper and lower ends of the wiring strip 18 are integrally formed with PIN pins 26 that are soldered to the PCB board 25. The PIN pins 26 are inserted into the pin holes on the PCB board 25 for soldering. During wiring, the external wire is inserted into the wiring frame 7 through the wiring port 12. Then, the wiring screw 8 is rotated clockwise. Since the diameter of the screwdriver hole 10 is smaller than the outer diameter of the wiring screw 8, the rear end of the wiring screw 8 abuts against the edge of the screwdriver hole 10 during rotation, thereby causing the wiring frame 7 to move upward and pressing the wire against the wiring washer 9 and the terminal block 18. When the wiring screw 8 is rotated counterclockwise, its front end abuts against the terminal block 18, thereby causing the wiring frame 7 to move downward and releasing the wire.

[0021] Preferably, the inner walls on both sides of the front terminal block 4 are provided with two first positioning ribs 11 that abut against the rear sides of the wiring frame 7, and the inner walls on both sides of the positioning groove 13 are provided with two second positioning ribs 14 that abut against the front sides of the wiring frame 7. This ensures the stability of the wiring frame 7 during movement, and at the same time, the contact area between the first positioning ribs 11, the second positioning ribs 14 and the wiring frame 7 is small, resulting in less resistance to movement.

[0022] Preferably, the terminal pad 9 is tile-shaped, and a groove 15 is provided in the middle of the terminal pad 9. The tile-shaped terminal pad 9 can better wrap around the wire, and the groove 15 improves the anti-slip effect.

[0023] Preferably, the bottom of the wiring frame 7 is provided with a hole 16. Wires can pass through the hole 16 into the wiring frame 7 to improve the versatility of wiring.

[0024] Preferably, the lower end of the rear terminal block 5 is provided with screws 17 for fixing the PCB board 25, so as to facilitate the fixing of the PCB board 25.

[0025] Preferably, the base 1 has heat dissipation vents 19 at both ends, and one end of the heat dissipation vent 19 is provided with a set of riveting posts 20, through which a fan 21 is mounted. This improves heat dissipation performance and facilitates the installation of the fan 21.

[0026] Preferably, the front end of the positioning groove 13 is provided with a first positioning slope 23, and the wiring frame 7 is provided with a second positioning slope 24 that positions and cooperates with the first positioning slope 23. The positioning cooperation between the second positioning slope 24 and the first positioning slope 23 is used to position the wiring frame 7 after it is inserted into place, thereby improving stability.

[0027] As stated above, this is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A built-in bypass type motor soft starter, comprising a base (1) and an upper cover (2) covering the upper end of the base (1), characterized in that: The base (1) and the top cover (2) are integrally formed with terminal blocks (3). The terminal blocks (3) include a front terminal block (4) integrally formed with the top cover (2), a rear terminal block (5) integrally formed with the base (1), and a set of terminal assembly (6) disposed in the front terminal block (4) and the rear terminal block (5). The terminal assembly (6) includes a wiring frame (7), a wiring screw (8) screwed to the top of the wiring frame (7), and a wiring washer (9) disposed in the wiring frame (7). The front end of the front terminal block (4) is provided with a screwdriver hole (10) communicating with the wiring screw (8), and the diameter of the screwdriver hole (10) is smaller than the outer diameter of the wiring screw (8). The rear terminal block (5) is provided with a wiring port (12) communicating with the wiring frame (7), and the inner cavity is provided with a positioning groove (13). The front end of the wiring frame (7) is slidably disposed in the positioning groove (13). The rear terminal block (5) is provided with a wiring strip socket (22) above the wiring port (12). The base (1) is provided with a wiring strip (18). The upper end of the wiring strip (18) passes through the wiring frame (7) and is inserted into the wiring strip socket (22). The lower end is integrally formed with a PIN pin (26) that is soldered to the PCB board (25).

2. The built-in bypass motor soft starter according to claim 1, characterized in that: The inner walls of the front terminal block (4) are provided with at least two first positioning ribs (11) that abut against the rear sides of the wiring frame (7), and the inner walls of the positioning groove (13) are provided with two second positioning ribs (14) that abut against the front sides of the wiring frame (7).

3. The built-in bypass motor soft starter according to claim 1, characterized in that: The wiring pad (9) is tile-shaped and has a groove (15) in the middle.

4. The built-in bypass motor soft starter according to claim 3, characterized in that: The bottom of the wiring frame (7) is provided with a hole (16).

5. The built-in bypass motor soft starter according to claim 1, characterized in that: The lower end of the rear terminal block (5) is provided with screws (17) for fixing the PCB board (25).

6. The built-in bypass motor soft starter according to claim 1, characterized in that: The base (1) has heat dissipation vents (19) at both ends, and a set of rivet posts (20) is provided on one end of the heat dissipation vent (19), through which a fan (21) is installed.

7. The built-in bypass motor soft starter according to claim 1, characterized in that: The positioning groove (13) has a first positioning inclined surface (23) at its front end, and the wiring frame (7) has a second positioning inclined surface (24) that positions and cooperates with the first positioning inclined surface (23).

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