A disc motor structure

Abstract

The utility model discloses a disc type motor structure, include: rotor ring shell, its right side fixed mounting has front end cover, its left side fixed mounting has rear end cover, and the bottom fixed connection of rear end cover has L shape fixed support, motor shaft, transversely set up in rotor ring shell, and its one end is provided with the axle hole, and its outside left side fixedly sheathed has rear bearing, and the rear end cover movably sheathed is set in rear bearing outside, the motor shaft outside right side fixedly sheathed has front bearing, and the front end cover movably sheathed is set on front bearing, stator bushing, fixed mounting in the motor shaft outside, its outside right side fixedly sheathed has bushing end plate, and its outside left side fixedly is provided with A end flange. The utility model integrates one side and exports the shaft as fixed support and excitation, brake, encoder lead wire and exports the disc type servo motor application mode from fixed end center, and simultaneously has brake, rotary variable control positioning system etc.

Description

Technical Field

[0001] This utility model relates to the field of disc motor technology, specifically a disc motor structure. Background Technology

[0002] Currently, domestic disc-type external rotor motors (such as single motors for electric bicycles) all have shafts at both ends and are fixed at both ends. They do not have braking, resolving, or other control and positioning systems at the same time. There is a lack of disc-type servo motors with a shaft on one side as a fixed support and excitation, braking, and encoder leads led out from the center of the fixed end. In response to this, we propose a disc motor structure. Utility Model Content

[0003] The purpose of this invention is to provide a disc motor structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a disc motor structure, comprising:

[0005] The rotor ring housing has a front end cover fixedly installed on its right side and a rear end cover fixedly installed on its left side. An L-shaped fixed support is fixedly connected to the bottom of the rear end cover.

[0006] The motor shaft is horizontally arranged inside the rotor ring housing. One end of the shaft has a central hole. A rear bearing is fixedly fitted on the left side of the shaft, and a rear end cover is movably fitted on the outside of the rear bearing. A front bearing is fixedly fitted on the right side of the motor shaft, and a front end cover is movably fitted on the front bearing. The diameter of the rear bearing is 1.2 times the distance between the front and rear bearings.

[0007] The stator bushing is fixedly installed on the outside of the motor shaft. A bushing end plate is fixedly installed on the right side of the outside, an A-end flange is fixedly installed on the left side of the outside, and a B-end flange is fixedly installed on the right side of the outside. Both the A-end flange and the B-end flange have six screw holes at equal intervals in a ring on one side, and the same fixing screw is installed in two opposite screw holes.

[0008] The brake stator is located on the right side of the B-end flange and is threadedly connected to six fixing screws. Its own lead wire passes through the stator bushing clearance and the shaft hole and exits from the rear end cover.

[0009] The brake rotor has a protruding edge integrally provided on the left side center of the front end cover, and the brake rotor is fixedly fitted on the outside of the protruding edge.

[0010] A resolver stator tray is embedded on the right side of the front cover. A resolver stator is installed inside the tray. The resolver stator’s own lead wire passes through the hollow shaft and exits from the rear cover.

[0011] The resolver rotor tray is fixedly mounted on the right side of the front cover by multiple screws, and the resolver rotor is fixedly mounted on its inner side by multiple screws.

[0012] Preferably, the stator bushing is movably sleeved on the outside of the motor shaft, and two keyways are symmetrically opened on the outside of the motor shaft. Two connecting keys are fixedly connected to the inside of the stator bushing, and the connecting keys are movably engaged in the corresponding keyways. Both sides of the stator bushing are movably contacted by retaining rings engaged in the two keyways. The connecting keys and retaining rings cooperate with the keyways to fix the stator bushing on the motor shaft.

[0013] Preferably, the motor shaft is a tubular structure with multiple sections of different diameters, and the diameter of the rear bearing is larger than that of the front bearing.

[0014] Preferably, the rear bearing is the main load-bearing bearing, and the front bearing is the auxiliary bearing.

[0015] Preferably, both sides of the rotor ring outer shell are provided with multiple threaded grooves at equal intervals in an annular shape, and hexagonal socket bolts are screwed into the threaded grooves. The front end cover and the rear end cover are provided with multiple bolt holes in an annular shape on opposite sides, and the bolt holes are movably fitted onto the corresponding hexagonal socket bolts.

[0016] Preferably, the left side of the brake stator has six threaded grooves that are threaded to the corresponding fixing screws; the brake stator is fixed to the motor shaft by the six fixing screws, the A-end flange, the B-end flange and the stator bushing.

[0017] Preferably, a first bearing chamber is provided on the right side of the rear end cover and is fitted onto the outside of the rear bearing, and a second bearing chamber is provided on the left side of the protruding edge and is fitted onto the outside of the front bearing.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model integrates a disc servo motor application method with one side output shaft as a fixed support and the excitation, braking and encoder leads leading out from the center of the fixed end, and also has braking, resolver control and positioning systems. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a disc motor structure proposed in this utility model;

[0021] Figure 2 This is a front view schematic diagram of a disc motor structure proposed in this utility model.

[0022] Figure 3 for Figure 2 A partial sectional view of the structure;

[0023] Figure 4 This is a three-dimensional cross-sectional structural diagram of a disc motor structure proposed in this utility model;

[0024] Figure 5 This is a side sectional view of a disc motor structure proposed in this utility model.

[0025] In the diagram: 1. Motor shaft; 2. Stator bushing; 3. Connecting key; 4. Snap ring; 5. Fixing screw; 6. Bushing end plate; 7. Brake stator; 8. Rear bearing; 9. Front bearing; 10. Rear end cover; 11. Rotor ring housing; 12. Front end cover; 13. Brake rotor; 14. Resolver stator; 15. Resolver stator tray; 16. Resolver rotor; 17. Resolver rotor tray. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-5 As shown, the disc motor structure proposed in this embodiment includes:

[0028] The rotor ring housing 11 has a front end cover 12 fixedly installed on its right side and a rear end cover 10 fixedly installed on its left side. An L-shaped fixed support is fixedly connected to the bottom of the rear end cover 10.

[0029] The motor shaft 1 is horizontally arranged inside the rotor ring housing 11. One end of the shaft has a central hole. A rear bearing 8 is fixedly fitted on the left side of the shaft. The rear end cover 10 is movably fitted on the outside of the rear bearing 8. A front bearing 9 is fixedly fitted on the right side of the motor shaft 1. The front end cover 12 is movably fitted on the front bearing 9. The diameter of the rear bearing 8 is 1.2 times the distance between the front bearing 9 and the rear bearing 8.

[0030] Stator bushing 2 is fixedly installed on the outside of motor shaft 1. Bushing end plate 6 is fixedly installed on the right side of its outer side, A end flange is fixedly installed on the left side of its outer side, and B end flange is fixedly installed on the right side of its outer side. Six screw holes are opened in a ring at equal intervals on one side of both A end flange and B end flange, and the same fixing screw 5 is installed in the two opposite screw holes.

[0031] The brake stator 7 is located on the right side of the B-end flange and is threadedly connected to six fixing screws 5. Its own lead wire passes through the stator bushing 2 clearance and the shaft hole and exits from the rear end cover 10.

[0032] The brake rotor 13 has a protruding edge integrally provided at the middle of the left side of the front end cover 12, and the brake rotor 13 is fixedly fitted on the outside of the protruding edge.

[0033] A resolver stator tray 15 is embedded on the right side of the front end cover 12, and a resolver stator 14 is installed inside it. The resolver stator 14 has its own lead wires passing through the hollow shaft and exiting from the rear end cover 10.

[0034] The resolver rotor tray 17 is fixedly mounted on the right side of the front cover 12 by multiple screws, and the resolver rotor 16 is fixedly mounted on its inner side by multiple screws.

[0035] In this embodiment, the stator bushing 2 is movably sleeved on the outside of the motor shaft 1. Two keyways are symmetrically opened on the outside of the motor shaft 1. Two connecting keys 3 are fixedly connected to the inside of the stator bushing 2. The connecting keys 3 are movably engaged in the corresponding keyways. Both sides of the stator bushing 2 are movably contacted by retaining rings 4 engaged in the two keyways. The connecting keys 3 and retaining rings 4 cooperate with the keyways to fix the stator bushing 2 on the motor shaft 1.

[0036] In this embodiment, the motor shaft 1 is a multi-segment tubular structure with different diameters, and the diameter of the rear bearing 8 is larger than that of the front bearing 9; the rear bearing 8 is the main bearing, and the front bearing 9 is the auxiliary bearing; both sides of the rotor ring housing 11 are provided with multiple threaded grooves at equal intervals in an annular shape, and hexagonal socket head caps are screwed into the threaded grooves; the front cover 12 and the rear cover 10 are provided with multiple bolt holes in an annular shape on the opposing sides, and the bolt holes are movably fitted onto the corresponding hexagonal socket head caps.

[0037] In this embodiment, the left side of the brake stator 7 is provided with six threaded grooves that are respectively threaded to the corresponding fixing screws 5. The brake stator 7 is fixed to the motor shaft 1 by the six fixing screws 5, the A-end flange, the B-end flange, and the stator bushing 2. The fixing screws 5 are used to prevent the brake stator 7 from radially displacing on the stator bushing 2, and the bushing end plate 6 is used to prevent the brake stator 7 from axially displacing on the stator bushing 2, thereby forming a complete stator by the motor shaft 1, the stator bushing 2, and the brake stator 7. The right side of the rear end cover 10 is provided with a first bearing chamber that is sleeved and clamped on the outside of the rear bearing 8, and the left side of the protruding edge is provided with a second bearing chamber that is sleeved and clamped on the outside of the front bearing 9. This serves to position the rear bearing 8 and the front bearing 9 on the outside.

[0038] It should be noted that: the center distance between the rear bearing 8 and the front bearing 9 is 74mm, the outer diameter of the rear bearing 8 is 90mm, and the angle between the mounting center point of the front bearing 9 and the outer diameter of the rear bearing 8 is 62 degrees. (This is the key to ensuring the strength of the single-sided fixed structure, which directly affects the structural stability and service life during use.)

[0039] Working principle: During assembly, the rear bearing 8 and the front bearing 9 are respectively placed on the motor shaft 1, the stator bushing 2 is placed on the motor shaft 1, and the connecting key 3 is slid into the corresponding keyway. The two retaining rings 4 are respectively inserted into the two keyways from both sides to restrict the stator bushing 2. The brake stator 7 is fixed to the right side of the stator bushing 2 using six fixing screws 5 in conjunction with the screw holes on the A-end flange and the B-end flange. The brake rotor 13 is fixedly placed on the outside of the protruding edge in the middle of the left side of the front end cover 12. The first bearing chamber on the rear end cover 10 is placed on the outside of the rear bearing 8, and the rear end cover 10 is fixed to the rotor ring shell 11 with the corresponding internal hex bolts. All leads are passed through the hollow right end of the shaft on the motor shaft 1 and led out from one side of the rear end cover 10. The second bearing chamber on the front end cover 12 is placed on the front bearing 9, and the front end cover 12 is fixed to the rotor ring shell 11 with the corresponding internal hex bolts. Assembly is complete.

[0040] The brake stator 7 is fixed to the motor shaft 1 by six fixing screws 5, an A-end flange, a B-end flange, and a stator bushing 2. The fixing screws 5 are used to prevent radial displacement of the brake stator 7 on the stator bushing 2, and the bushing end plate 6 is used to prevent axial displacement of the brake stator 7 on the stator bushing 2. This forms a complete stator by integrating the motor shaft 1, stator bushing 2, and brake stator 7. The motor shaft 1 features a design with a central hole, allowing the brake stator 7 and resolver stator 14 to be connected. The lead wires pass through the central hole and exit from a single end of the rear end cover 10 for application, achieving excitation... The application effect of the magnetic, braking, and encoder leads being led out from the center of the fixed end on one side, combined with the fixed support form of a single L-shaped fixed support on the bottom left side, achieves the effect of single-sided fixed support. Since the main load of the disc servo motor is radial force when it is working, the single-end fixed support of the bottom using the wide L-shaped fixed support meets the application requirements. The disc servo motor application method integrates one side output shaft as fixed support and the excitation, braking, and encoder leads being led out from the center of the fixed end, and also has braking, resolver control and positioning systems.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A disc motor structure, comprising a rotor ring housing (11), characterized in that: include: The rotor ring housing (11) has a front end cover (12) fixedly installed on its right side and a rear end cover (10) fixedly installed on its left side. The motor shaft (1) is horizontally arranged inside the rotor ring shell (11). One end of the shaft has a central hole. A rear bearing (8) is fixedly fitted on the left side of the shaft. The rear end cover (10) is movably fitted on the outside of the rear bearing (8). A front bearing (9) is fixedly fitted on the right side of the motor shaft (1). The front end cover (12) is movably fitted on the front bearing (9). The diameter of the rear bearing (8) is 1.2 times the distance between the front bearing (9) and the rear bearing (8). Stator bushing (2) is fixedly installed on the outside of motor shaft (1); The brake stator (7) has its own lead wire passing through the stator bushing (2) clearance and shaft hole and exiting from the rear end cover (10); The brake rotor (13) has a protruding edge integrally provided on the left side of the front end cover (12), and the brake rotor (13) is fixedly fitted on the outside of the protruding edge. The resolver stator tray (15) is fitted on the right side of the front cover (12); The resolver rotor tray (17) is fixedly mounted on the right side of the front cover (12) by multiple screws, and the resolver rotor (16) is fixedly mounted on its inner side by multiple screws.

2. The disc motor structure according to claim 1, characterized in that: The stator bushing (2) is movably sleeved on the outside of the motor shaft (1). Two keyways are symmetrically opened on the outside of the motor shaft (1). Two connecting keys (3) are fixedly connected to the inside of the stator bushing (2). The connecting keys (3) are movably engaged in the corresponding keyways. Both sides of the stator bushing (2) are movably contacted by retaining rings (4) engaged in the two keyways. The stator bushing (2) is fixedly fitted with a bushing end plate (6) on the right side of its outer side. An A-end flange is fixedly installed on the left side of its outer side, and a B-end flange is fixedly installed on the right side of its outer side. Six screw holes are opened in a ring at equal intervals on one side of the A-end flange and the same fixing screw (5) is installed in the two opposite screw holes. The brake stator (7) is located on the right side of the B-end flange and is threadedly connected to the six fixing screws (5). A resolver stator (14) is installed inside the resolver stator tray (15). The resolver stator (14) has its own lead wires passing through the hollow shaft and exiting from the rear end cover (10).

3. The disc motor structure according to claim 1, characterized in that: The motor shaft (1) is a tubular structure with multiple sections of different diameters, and the diameter of the rear bearing (8) is larger than that of the front bearing (9).

4. The disc motor structure according to claim 1, characterized in that: The rear bearing (8) is the main bearing, and the front bearing (9) is the auxiliary bearing.

5. The disc motor structure according to claim 1, characterized in that: Both sides of the rotor ring shell (11) are provided with multiple threaded grooves at equal intervals in an annular shape. The threaded grooves are threaded with internal hexagonal bolts. The front cover (12) and the rear cover (10) are provided with multiple bolt holes in an annular shape on opposite sides. The bolt holes are movably fitted onto the corresponding internal hexagonal bolts. The bottom of the rear cover (10) is fixedly connected with an L-shaped fixed support.

6. The disc motor structure according to claim 1, characterized in that: The left side of the brake stator (7) has six threaded grooves that are threaded to the corresponding fixing screws (5).

7. The disc motor structure according to claim 1, characterized in that: The right side of the rear end cover (10) is provided with a first bearing chamber that is sleeved and fastened to the outside of the rear bearing (8), and the left side of the protruding edge is provided with a second bearing chamber that is sleeved and fastened to the outside of the front bearing (9).

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