Servo motor rotor structure with stable connection

Abstract

The utility model discloses a servo motor rotor structure with stable connection, which comprises a rotor body, mounting grooves, magnetic steel bodies and locking plates, the mounting grooves are arranged on the outer side wall of the rotor body, the magnetic steel bodies are arranged in the mounting grooves, mounting parts are arranged on the surface of the rotor body between the mounting grooves, and the locking plates are arranged on the mounting parts. The locking plates are arranged on the two sides of the mounting part, a first through hole is formed in one side of the interior of each locking plate, a second through hole is formed in the other side of the interior of each locking plate, a second threaded hole is formed in one side of the surface of the mounting part, and a first threaded hole is formed in the other side of the surface of the mounting part. According to the utility model, the structure of the mounting groove is optimized, the connection between the magnetic steel and the rotor is tighter, the magnetic steel can be conveniently locked and prevented from falling off from the side surface, and the stability of the connection between the magnetic steel and the rotor is improved.

Description

Technical Field

[0001] This utility model relates to the field of servo motor technology, specifically to a servo motor rotor structure with stable connection. Background Technology

[0002] A servo motor is a type of motor used in servo systems to control the operation of mechanical components. It is primarily used as an actuator in automatic control systems, converting voltage signals into torque and speed to drive the controlled object. The rotor speed of a servo motor is controlled by the input signal, enabling rapid response and exhibiting characteristics such as a small electromechanical time constant and high linearity. The magnets in a servo motor are mainly used to generate and control the magnetic field, thereby driving the motor. The material and performance of the magnets directly affect the motor's efficiency and precision. Magnets are typically mounted on the rotor using adhesive or clips, which generally results in limited stability and a risk of detachment.

[0003] Chinese patent CN204928397 discloses a servo motor rotor structure, including a rotor bracket and several magnets fixedly installed on the rotor bracket. The magnets are fixed to the rotor bracket in the following structural form: several straight grooves are formed on the outer circumferential surface of the rotor bracket, which are spaced apart along the circumferential direction. The length of each straight groove extends along the axial direction of the rotor bracket. The groove opening width of each straight groove is smaller than the groove bottom width. The magnets are inserted into the straight grooves along the length direction of the straight grooves and are fitted and fixed with the straight grooves.

[0004] The aforementioned servo motor rotor structure, while simple to assemble and inexpensive, enhances the connection stability between the magnet and the rotor support. However, it only uses straight slots to install the magnet, resulting in insufficient stability. The lack of limiting on both sides of the magnet makes it prone to displacement and subsequent detachment from the side. Therefore, we propose a servo motor rotor structure with a stable connection. Utility Model Content

[0005] The purpose of this invention is to provide a stable servo motor rotor structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stable servo motor rotor structure, comprising a rotor body, a mounting groove, a magnet body, and locking plates. The mounting grooves are all disposed on the outer side wall of the rotor body, and the magnet body is disposed inside the mounting groove. Mounting portions are provided on the surface of the rotor body between the mounting grooves. The locking plates are all disposed on both sides of the mounting portions, and a first through hole is provided on one side of the interior of each locking plate, and a second through hole is provided on the other side of the interior of each locking plate. A second threaded hole is provided on one side of the surface of the mounting portion, and a first threaded hole is provided on the other side of the surface of the mounting portion.

[0007] Preferably, the outer walls at both ends of the magnet body are provided with concave surfaces, and the outer wall of the mounting part at the concave surface is provided with a protrusion, and the protrusion fits tightly with the concave surface, so that the magnet body is tightly connected to the mounting groove and will not loosen.

[0008] Preferably, the top surfaces at both ends of the magnet body are provided with arc surfaces, and the outer wall of the mounting part at the position of the arc surface is provided with a lug, and the lug fits tightly with the arc surface, which facilitates the limiting of the magnet body and prevents the magnet body from coming out of the opening end of the mounting groove.

[0009] Preferably, a pivot is inserted through the center of the mounting part, and both ends of the pivot extend to the outside of the mounting part and are connected to the locking plate.

[0010] Preferably, one end of the locking piece is provided with a first blocking part, and the other end of the locking piece is provided with a second blocking part, and both the first blocking part and the second blocking part are tightly fitted to the magnet body.

[0011] Preferably, a first bolt is disposed inside the first through hole, and a second bolt is disposed inside the second through hole.

[0012] Preferably, the first bolt and the second bolt pass through the first through hole and the second through hole respectively and are threadedly connected to the first threaded hole and the second threaded hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The magnet body is pushed into the mounting groove from the front of the rotor body. The magnet body is tightly embedded in the mounting groove, and the concave surface of the magnet body engages tightly with the protrusion on the outer wall of the mounting part, so that the magnet body and the mounting groove are tightly connected and will not loosen. The lug on the top of the mounting part engages tightly with the arc surface on the top of the magnet body and limits the magnet body, preventing the magnet body from coming out of the opening end of the mounting groove. By optimizing the structure of the mounting groove, the connection between the magnet body and the rotor body is made tighter. Rotating the locking plate causes the rotating shaft to drive the two sets of locking plates to rotate synchronously. The first and second blocking parts at both ends of the locking plate are rotated to the sides of the magnet body, respectively. Then, the first bolt and the second bolt are passed through the first through hole and the second through hole and screwed into the corresponding first and second threaded holes on the surface of the mounting part to fix the locking plate. The locking plate limits the sides of the magnet body through the first and second blocking parts. This design makes it easy to lock the magnet body and prevent it from falling off from the side, thereby improving the stability of the connection between the magnet body and the rotor body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the locking state structure of the locking plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the rotor body structure of this utility model;

[0019] Figure 5 This is a partially enlarged side view of the mounting section of this utility model.

[0020] In the figure: 1. Rotor body; 2. Mounting groove; 3. Magnet body; 4. Concave surface; 5. Protrusion; 6. Arc surface; 7. Mounting part; 8. Shaft; 9. Locking plate; 10. First blocking part; 11. First through hole; 12. Lug; 13. Second threaded hole; 14. Second blocking part; 15. Second through hole; 16. First threaded hole; 17. First bolt; 18. Second bolt. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-5 The present invention provides an embodiment of a stable servo motor rotor structure, comprising a rotor body 1, a mounting groove 2, a magnet body 3, and a locking plate 9. The mounting grooves 2 are all disposed on the outer side wall of the rotor body 1, the magnet body 3 is disposed inside the mounting grooves 2, and mounting portions 7 are provided on the surface of the rotor body 1 between the mounting grooves 2.

[0024] All locking plates 9 are provided on both sides of the mounting part 7, and a first through hole 11 is provided on one side of the interior of the locking plate 9, and a second through hole 15 is provided on the other side of the interior of the locking plate 9. A second threaded hole 13 is provided on one side of the surface of the mounting part 7, and a first threaded hole 16 is provided on the other side of the surface of the mounting part 7.

[0025] The outer walls at both ends of the magnet body 3 are provided with concave surfaces 4, and the outer wall of the mounting part 7 at the concave surface 4 is provided with protrusions 5, and the protrusions 5 are in close contact with the concave surfaces 4.

[0026] The top surfaces at both ends of the magnet body 3 are provided with arc surfaces 6, and the mounting part 7 at the position of the arc surface 6 is provided with lugs 12, and the lugs 12 are tightly fitted with the arc surface 6.

[0027] Specifically, the magnet body 3 is pushed into the mounting groove 2 from the front of the rotor body 1. The magnet body 3 is tightly embedded in the mounting groove 2. At the same time, the concave surface 4 on the surface of the magnet body 3 is tightly engaged with the protrusion 5 on the outer wall of the mounting part 7, so that the magnet body 3 is tightly connected to the mounting groove 2 and will not loosen. The lug 12 on the top of the mounting part 7 is tightly engaged with the arc surface 6 on the top of the magnet body 3 and limits the magnet body 3, preventing the magnet body 3 from coming out of the opening end of the mounting groove 2. This design optimizes the structure of the mounting groove 2, making the connection between the magnet body 3 and the rotor body 1 more compact.

[0028] A pivot 8 passes through the center of the mounting part 7, and both ends of the pivot 8 extend to the outside of the mounting part 7 and are connected to the locking piece 9.

[0029] One end of the locking plate 9 is provided with a first blocking part 10, and the other end of the locking plate 9 is provided with a second blocking part 14, and both the first blocking part 10 and the second blocking part 14 are tightly fitted with the magnet body 3.

[0030] A first bolt 17 is installed inside the first through hole 11, and a second bolt 18 is installed inside the second through hole 15;

[0031] The first bolt 17 and the second bolt 18 pass through the first through hole 11 and the second through hole 15 respectively and are threadedly connected to the first threaded hole 16 and the second threaded hole 13.

[0032] Specifically, rotating the locking plate 9 causes the rotating shaft 8 to drive the two sets of locking plates 9 to rotate synchronously, rotating the first blocking part 10 and the second blocking part 14 at both ends of the locking plate 9 to both sides of the magnet body 3, respectively. (Refer to the attached diagram.) Figure 2 , 3 ;

[0033] Then, the first bolt 17 and the second bolt 18 are passed through the first through hole 11 and the second through hole 15 respectively and screwed into the corresponding first threaded hole 16 and second threaded hole 13 on the surface of the mounting part 7 to fix the locking piece 9. The locking piece 9 limits the two sides of the magnet body 3 through the first blocking part 10 and the second blocking part 14. This design makes it easy to lock the magnet body 3 and prevent it from falling off from the side, thereby improving the stability of the connection between the magnet body 3 and the rotor body 1.

[0034] In use, the embodiments of this application are as follows: First, the magnet body 3 is pushed into the mounting groove 2 from the front of the rotor body 1. The magnet body 3 is tightly embedded in the mounting groove 2. At the same time, the concave surface 4 of the magnet body 3 tightly engages with the protrusion 5 on the outer wall of the mounting part 7, so that the magnet body 3 is tightly connected to the mounting groove 2 and will not loosen. The lug 12 at the top of the mounting part 7 tightly engages with the arc surface 6 at the top of the magnet body 3 and limits the magnet body 3, preventing the magnet body 3 from coming out of the opening end of the mounting groove 2. This design optimizes the structure of the mounting groove 2, making the connection between the magnet body 3 and the rotor body 1 tighter. Then, rotating the locking plate 9 causes the rotating shaft 8 to drive the two sets of locking plates 9 to rotate synchronously, rotating the first blocking part 10 and the second blocking part 14 at both ends of the locking plate 9 to the two sides of the magnet body 3, respectively. (Refer to the attached drawing.) Figure 2 , 3 Then, the first bolt 17 and the second bolt 18 are passed through the first through hole 11 and the second through hole 15 respectively and screwed into the corresponding first threaded hole 16 and second threaded hole 13 on the surface of the mounting part 7 to fix the locking piece 9. The locking piece 9 limits the two sides of the magnet body 3 through the first blocking part 10 and the second blocking part 14. This design makes it easy to lock the magnet body 3 and prevent it from falling off from the side, thereby improving the stability of the connection between the magnet body 3 and the rotor body 1.

[0035] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A stable servo motor rotor structure, characterized in that, The device includes a rotor body (1), a mounting groove (2), a magnet body (3), and a locking plate (9). The mounting groove (2) is located on the outer side wall of the rotor body (1). The magnet body (3) is located inside the mounting groove (2). The surface of the rotor body (1) between the mounting grooves (2) is provided with a mounting part (7). The locking plate (9) is located on both sides of the mounting part (7). One side of the inside of the locking plate (9) is provided with a first through hole (11), and the other side of the inside of the locking plate (9) is provided with a second through hole (15). One side of the surface of the mounting part (7) is provided with a second threaded hole (13), and the other side of the surface of the mounting part (7) is provided with a first threaded hole (16).

2. The stable servo motor rotor structure according to claim 1, characterized in that: The outer sidewalls at both ends of the magnet body (3) are provided with concave surfaces (4), and the outer sidewall of the mounting part (7) at the concave surface (4) is provided with protrusions (5), and the protrusions (5) are in close contact with the concave surfaces (4).

3. The stable servo motor rotor structure according to claim 1, characterized in that: The top surfaces at both ends of the magnet body (3) are provided with arc surfaces (6), and the mounting part (7) at the position of the arc surface (6) is provided with lugs (12), and the lugs (12) are in close contact with the arc surface (6).

4. The stable servo motor rotor structure according to claim 1, characterized in that: A pivot (8) passes through the center of the mounting part (7), and both ends of the pivot (8) extend to the outside of the mounting part (7) and are connected to the locking piece (9).

5. The stable servo motor rotor structure according to claim 1, characterized in that: One end of the locking piece (9) is provided with a first blocking part (10), and the other end of the locking piece (9) is provided with a second blocking part (14), and both the first blocking part (10) and the second blocking part (14) are tightly fitted to the magnet body (3).

6. The stable servo motor rotor structure according to claim 1, characterized in that: A first bolt (17) is provided inside the first through hole (11), and a second bolt (18) is provided inside the second through hole (15).

7. The stable servo motor rotor structure according to claim 6, characterized in that: The first bolt (17) and the second bolt (18) pass through the first through hole (11) and the second through hole (15) respectively and are threadedly connected to the first threaded hole (16) and the second threaded hole (13).

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