An electric motor with a mechanical brake

Abstract

A motor with a mechanical brake includes a brake disc fixed to a rotating shaft and outside the motor end cover. A brake block is mounted on a rotating connecting frame facing the brake disc. The rotating connecting frame is semi-circular, with one end hinged to the motor end cover and the other end connected to a tension spring and a brake cable. The tension spring and brake cable are located on the left and right sides of the rotating connecting frame, respectively, with the tension spring and brake block on the same side. One end of the brake cable has a positioning pin connected to a positioning bracket on the upper part of the rotating connecting frame, and the other end of the brake cable passes through a fixed base and is fitted with an iron block. An electromagnet is mounted on the fixed base, and when energized, the electromagnet attracts and positions the iron block. This motor structure limits the speed of the rotating shaft by using a brake disc on the rotating shaft and controlling the brake block on the rotating connecting frame to move closer to or away from the brake disc using a brake cable and tension spring. The brake cable is tightened or loosened using an electromagnetic mechanism. The structure is simple and easy to operate.

Description

Technical Field

[0001] This utility model relates to a motor with a mechanical brake. Background Technology

[0002] An electric motor (commonly known as a "motor") is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Electric motors are widely used in household appliances, the automotive industry, robotics, and other fields, such as washing machines, spin dryers, digital cameras, windshield wipers, and outdoor robots. During operation, if the motor's speed is too high, it is prone to overheating and burning out. Therefore, a speed-limiting braking device is urgently needed to control the motor's speed. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a motor with a mechanical brake.

[0004] To achieve the above objectives, this utility model provides a motor with a mechanical brake, including a brake disc, which is fixed on the rotating shaft and outside the motor end cover;

[0005] A brake block is mounted on the side of a rotating connecting frame facing the brake disc. The rotating connecting frame is semi-circular. One end of the rotating connecting frame is hinged to the motor end cover, and the other end of the rotating connecting frame is connected to a tension spring and a brake cable. The tension spring and the brake cable are respectively located on the left and right sides of the rotating connecting frame. The tension spring is located on the same side as the brake block and is mounted on a base plate. The base plate is located below the rotating connecting frame and is fixed to the motor end cover.

[0006] One end of the brake line is provided with a positioning pin and connected to the positioning bracket on the upper part of the rotating connecting frame. The other end of the brake line passes through the fixed seat and is mounted on an iron block. An electromagnet is provided on the fixed seat. The electromagnet is located on the side of the iron block away from the brake line. When the electromagnet is energized, it attracts and positions itself with the iron block.

[0007] As a further improvement of this utility model, the rotating connecting frame is provided with an arc-shaped flange in the middle, and the brake block is installed on the side of the arc-shaped flange facing the brake disc.

[0008] As a further improvement of this utility model, a positioning hole is machined on the positioning bracket, and the positioning pin is inserted into the positioning hole for positioning.

[0009] As a further improvement of this utility model, a groove is machined in the positioning hole, the inner diameter of the positioning hole matches the outer diameter of the positioning pin shaft, and the width of the groove matches the outer diameter of the brake line.

[0010] As a further improvement of this utility model, an integrated spring seat is provided on the right side of the base plate, and the two ends of the tension spring are respectively connected to the spring seat and the spring connection hole on the rotating connecting frame.

[0011] As a further improvement of this utility model, the brake cable is provided with a cable sleeve, the base plate is provided with a limiting bracket, the two ends of the cable sleeve abut against the limiting bracket and the fixing seat respectively, and a U-shaped groove is machined on the limiting bracket, the width of the U-shaped groove matching the outer diameter of the brake cable.

[0012] As a further improvement of this utility model, the base plate is also provided with an integrated first hook and a second hook for fastening and positioning the pipeline sleeve, and the first hook and the second hook are arranged in opposite directions.

[0013] The beneficial effects of this utility model are as follows:

[0014] This device limits the speed of the rotating shaft by setting a brake disc on the rotating shaft and using a brake cable and a tension spring to control the brake block on the rotating connecting frame to move closer to or away from the brake disc. The brake cable is tightened or loosened by an electromagnetic mechanism. The structure is simple and easy to operate. Attached Figure Description

[0015] Figure 1 This is a front view of an electric motor with a mechanical brake according to the present invention.

[0016] Figure 2 This is a side view of an electric motor with a mechanical brake according to the present invention.

[0017] Figure 3 This is the front view of the rotating connecting frame 5;

[0018] Figure 4 This is a side view of the rotating connecting bracket 5;

[0019] Figure 5 This is the front view of positioning plate 6;

[0020] Figure 6 This is a side view of the positioning plate 6;

[0021] Figure 7 This is a structural diagram of the limiting bracket at position 62;

[0022] Figure 8 This is a schematic diagram of the structure at the first hook 63.

[0023] In the diagram: 1. Motor end cover; 2. Shaft; 3. Brake disc; 4. Brake block; 5. Rotating connecting frame; 51. Arc-shaped flange; 52. Spring connecting hole; 53. Positioning bracket; 54. Positioning hole; 541. Slot; 6. Base plate; 61. Spring seat; 62. Limiting bracket; 621. U-shaped groove; 63. First hook; 64. Second hook; 7. Pull spring; 8. Brake cable; 81. Positioning pin; 82. Iron block; 9. Pipe sleeve; 10. Fixing seat; 11. Electromagnet. Detailed Implementation

[0024] like Figure 1 , Figure 2 As shown, the present invention provides a motor with a mechanical brake, including a brake disc 3, which is fixed on the rotating shaft 2 and the outside of the motor end cover 1.

[0025] Brake block 4 is installed on the side of the rotating connecting frame 5 facing the brake disc 3. The rotating connecting frame 5 has an arc-shaped flange 51 in the middle. Brake block 4 is installed on the side of the arc-shaped flange 51 facing the brake disc 3. The rotating connecting frame 5 is semi-circular (see...). Figure 3 One end of the rotating connecting frame 5 is hinged to the motor end cover 1, and the other end of the rotating connecting frame 5 is connected to the tension spring 7 and the brake cable 8. The tension spring 7 and the brake cable 8 are respectively located on the left and right sides of the rotating connecting frame 5. The tension spring 7 is located on the same side as the brake block 4. The tension spring 7 is installed on the base plate 6. The base plate 6 is located below the rotating connecting frame 5 and is fixed to the motor end cover 1. An integrated spring seat 61 is provided on the right side of the base plate 6 (see...). Figure 5 , Figure 6 The two ends of the tension spring 7 are respectively connected to the spring seat 61 and the spring connection hole 52 on the rotating connecting bracket 5;

[0026] One end of the brake line 8 is equipped with a positioning pin 81, which is connected to the positioning bracket 53 on the upper part of the rotating connecting frame 5. The positioning bracket 53 is machined with a positioning hole 54. The positioning pin 81 is inserted into the positioning hole 54 for positioning. The positioning hole 54 is machined with a groove 541 (see Figure 7 The inner diameter of the positioning hole 54 matches the outer diameter of the locating pin 81 shaft, and the width of the slot 541 matches the outer diameter of the brake line 8 (see...). Figure 4 The other end of the brake cable 8 passes through the fixing seat 10 and is then mounted on the iron block 82. An electromagnet 11 is mounted on the fixing seat 10, located on the side of the iron block 82 away from the brake cable 8. When energized, the electromagnet 11 attracts and positions itself against the iron block 82. A tubing sleeve 9 is fitted over the brake cable 8. A limiting bracket 62 is mounted on the base plate 6. Both ends of the tubing sleeve 9 abut against the limiting bracket 62 and the fixing seat 10, respectively. A U-shaped groove 621 is machined on the limiting bracket 62, the width of which matches the outer diameter of the brake cable 8. The base plate 6 also has an integrated first hook 63 and a second hook 64 for securing and positioning the tubing sleeve 9 (see...). Figure 8The first hook 63 and the second hook 64 are set in opposite directions.

[0027] This device limits the speed of the rotating shaft by setting a brake disc on the rotating shaft and using a brake cable and a tension spring to control the brake block on the rotating connecting frame to move closer to or away from the brake disc. The brake cable is tightened or loosened by an electromagnetic mechanism. The structure is simple and easy to operate.

[0028] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;

[0029] When the motor starts normally, the electromagnet is continuously energized. After being energized, the electromagnet generates magnetism and attracts and positions the iron block at one end of the brake cable, thereby tightening the brake cable. The brake cable drives the rotating connecting frame and the brake block to flip away from the brake disc, and the brake block disengages from the brake disc. The tension spring forms elastic tension, and then the motor starts again, and the shaft drives the brake disc to rotate synchronously. When it is necessary to limit the speed of the shaft, simply de-energize the electromagnet. After the electromagnet loses power, it loses its magnetism and disengages from the iron block. Under the elastic restoring force of the tension spring, the rotating connecting frame flips towards the brake disc, and the brake block contacts the surface of the brake disc, thus achieving speed limiting of the shaft.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electric motor with mechanical brake, characterized in that, include: Brake disc (3), the brake disc (3) is fixed on the rotating shaft (2) and outside the motor end cover (1); Brake block (4), the brake block (4) is installed on the side of the rotating connecting frame (5) facing the brake disc (3), the rotating connecting frame (5) is semi-circular, one end of the rotating connecting frame (5) is hinged to the motor end cover (1), the other end of the rotating connecting frame (5) is connected to a tension spring (7) and a brake cable (8), the tension spring (7) and the brake cable (8) are respectively located on the left and right sides of the rotating connecting frame (5), the tension spring (7) is located on the same side as the brake block (4), the tension spring (7) is installed on the base plate (6), the base plate (6) is located below the rotating connecting frame (5) and fixed to the motor end cover (1); One end of the brake line (8) is provided with a positioning pin (81) which is connected to the positioning bracket (53) on the upper part of the rotating connecting frame (5). The other end of the brake line (8) passes through the fixed seat (10) and is fitted with an iron block (82). An electromagnet (11) is provided on the fixed seat (10). The electromagnet (11) is located on the side of the iron block (82) away from the brake line (8). When the electromagnet (11) is energized, it attracts and positions itself with the iron block (82).

2. The electric motor with mechanical brake according to claim 1, characterized in that: The rotating connecting frame (5) has an arc-shaped flange (51) in the middle, and the brake block (4) is installed on the side of the arc-shaped flange (51) facing the brake disc (3).

3. The electric motor with mechanical brake according to claim 1, characterized in that: Positioning holes (54) are machined on the positioning bracket (53), and the positioning pin (81) is inserted into the positioning holes (54) for positioning.

4. The electric motor with mechanical brake according to claim 3, characterized in that: A slot (541) is machined inside the positioning hole (54). The inner diameter of the positioning hole (54) matches the outer diameter of the shaft of the positioning pin (81), and the width of the slot (541) matches the outer diameter of the brake line (8).

5. The electric motor with mechanical brake according to claim 1, characterized in that: The base plate (6) has an integrated spring seat (61) on the right side, and the two ends of the tension spring (7) are respectively connected to the spring seat (61) and the spring connection hole (52) on the rotating connecting frame (5).

6. The electric motor with mechanical brake according to claim 1, characterized in that: The brake line (8) is covered with a cable sleeve (9), and a limiting bracket (62) is provided on the base plate (6). The two ends of the cable sleeve (9) abut against the limiting bracket (62) and the fixing seat (10) respectively. A U-shaped groove (621) is machined on the limiting bracket (62), and the width of the U-shaped groove (621) matches the outer diameter of the brake line (8).

7. An electric machine with mechanical brake according to claim 6, characterized in that: The base plate (6) is also provided with an integrated first hook (63) and second hook (64) for fastening and positioning the pipeline sleeve (9), and the first hook (63) and the second hook (64) are arranged in opposite directions.

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