Plastic package integrated single-bearing motor
By introducing a limiting post and a sliding groove structure into the encapsulated single-bearing motor, the wear and fatigue problems of the bearing during bidirectional rotation are solved, achieving higher operational stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-04-03
AI Technical Summary
When existing encapsulated single-bearing motors rotate in both directions, the bearings are subjected to complex radial and axial forces, leading to wear and fatigue, which affects the stability of use.
A plastic-encapsulated integrated single-bearing motor was designed, which adopts a limiting post and a sliding groove structure. The limiting block slides in the sliding groove to restrict the reverse rotation of the rotor module, thereby reducing wear and fatigue.
It effectively prevents the rotor module from rotating in the opposite direction, reduces wear and fatigue, and improves the stability of the motor bearings.
Smart Images
Figure CN224083345U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of motor technology, specifically to a plastic-encapsulated integrated single-bearing motor. Background Technology
[0002] A plastic-encapsulated single-bearing motor is a type of plastic-encapsulated motor. It refers to a motor that uses plastic encapsulation technology to completely encapsulate the stator core, windings, and other components of the motor with engineering plastic, and uses only one bearing to support the rotor. Like ordinary motors, it operates based on the principle of electromagnetic induction. When current flows through the motor windings, a rotating magnetic field is generated. This magnetic field interacts with the rotor, causing the rotor to rotate under the influence of electromagnetic force, thus converting electrical energy into mechanical energy.
[0003] Currently, when we use motor bearings, we can change the direction of the rotating magnetic field by changing the phase sequence of the three-phase current flowing into the stator winding. This allows the bearing to be used for forward and reverse rotation according to the phase sequence. However, when rotating in both directions, the bearing has to bear radial and axial forces in two directions, making the stress situation more complex. This causes the contact stress distribution between the rolling elements and the raceway to change continuously, which aggravates wear and fatigue, and ultimately affects the stability of the motor bearing.
[0004] Therefore, it is necessary to provide a molded, integrated single-bearing motor to solve the above problems. Utility Model Content
[0005] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a plastic-encapsulated integrated single-bearing motor, which achieves the effect of limiting the position of the motor bearing, thereby solving the problem that the bearing will frequently reverse under the condition of motor operation error.
[0006] The technical solution adopted by this application to solve its technical problem is: a plastic-encapsulated integrated single-bearing motor, including a motor bearing assembly, the motor bearing assembly including an outer housing, the outer housing being a cylindrical structure, a rotor module and a stator module being disposed inside the outer housing, a bearing ring being fixedly installed inside the outer housing, a rolling element being disposed between the bearing ring and the rotor module, a plurality of sets of sliding grooves being formed on the rolling element, an elastic element being fixedly installed inside the plurality of sets of sliding grooves, a limit post being fixedly installed on the elastic element, one side of the sliding groove being a normal equidistant size, and the other side being a structure that gradually tapers inward.
[0007] Furthermore, a limiting groove is formed near the slide groove of the rolling element, and a limiting block is fixedly installed on the limiting post. The limiting block can be adapted at the slide groove, and the movement of the limiting post will cause the limiting block to slide synchronously at the slide groove.
[0008] Furthermore, the rolling element has several sets of balls inside, and the balls of the rolling element can roll on the raceway between the rotor module and the bearing ring.
[0009] Furthermore, one end of the outer casing is provided with a rear end cover, the rear end cover has several sets of fixing holes, and both ends of the rear end cover are protruding parts.
[0010] Furthermore, a wire clamp is fixedly installed on the rear end cover, which is used to fix and organize the wires.
[0011] Furthermore, a front cover is installed on one side of the outer casing, and a threaded opening can be provided on the front cover.
[0012] The beneficial effects of this application are:
[0013] This application provides a plastic-encapsulated integrated single-bearing motor that converts electrical current into mechanical energy between the rotor module and the bearing ring, allowing the rotor module to rotate inside the bearing ring for a driving effect. As the rotor module rotates inside the bearing ring, its outer side contacts the outer side of a limiting post. If operator error causes reverse rotation, the limiting post will move at the groove, thus blocking the outer side of the rotor module. This prevents the rotor module from rotating in the opposite direction inside the bearing ring, reducing stress complexity, wear, and fatigue, and improving the overall stability of the motor bearing assembly. Attached Figure Description
[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:
[0015] Figure 1 This is an overall schematic diagram of a plastic-encapsulated integrated single-bearing motor according to this application;
[0016] Figure 2 for Figure 1 Schematic diagram of the rear end cover of the motor bearing assembly;
[0017] Figure 3 for Figure 1 Exploded view of the bearing assembly of the electric motor;
[0018] Figure 4 for Figure 3 Schematic diagram of the limiting post of the motor bearing assembly;
[0019] Figure 5 for Figure 4 Explosion diagram of the middle limiting post;
[0020] The following are the labeling elements in the figure:
[0021] 10. Motor bearing assembly; 11. Rear end cover; 12. Outer housing; 13. Front end cover; 14. Wire clamp; 15. Fixing hole; 16. Rotor module; 17. Stator module; 18. Bearing ring; 19. Rolling element; 110. Slide groove; 111. Elastic element; 112. Limiting post; 113. Limiting block; 114. Limiting groove. Detailed Implementation
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0024] like Figure 1-5 As shown, this application provides a molded integrated single-bearing motor, including a motor bearing assembly 10. The motor bearing assembly 10 is molded as a single unit, so that the motor bearing assembly 10 as a whole can form a relatively closed space, effectively preventing dust, moisture, oil and other impurities from entering the motor bearing assembly 10. The motor bearing assembly 10 is used to set a bearing at one end or a certain place of the motor to support the rotating shaft. Compared with the traditional double-bearing motor, the single-bearing motor eliminates one bearing and related bearing housing and other components, making the motor structure more compact and simple, while also reducing material costs and manufacturing costs.
[0025] The motor bearing assembly 10 includes an outer housing 12, which is a cylindrical structure. Inside the outer housing 12 are a rotor module 16 and a stator module 17. The outer housing 12 also serves as an external barrier for the motor, protecting the rotor module 16 and stator module 17 from external physical impacts, dust, moisture, oil, and other contaminants. The rotor module 16 and stator module 17 can work together. The stator module 17 can be made of stacked silicon steel sheets, providing a magnetic circuit for the windings. When current is applied to the windings, a magnetic field is generated, and the windings rotate under the force generated by the magnetic field of the stator module 17, thus realizing the conversion of electrical energy into mechanical energy.
[0026] Meanwhile, a bearing ring 18 is fixedly installed inside the outer casing 12. A rolling element 19 is provided between the bearing ring 18 and the rotor module 16. The rolling element 19 has several sets of balls (not shown in the figure) inside. The rotor module 16 provides support and positioning for the shaft, enabling the shaft to rotate stably. The bearing ring 18 mainly plays a supporting role, and it can bear the load transmitted from the rotor module 16. The balls of the rolling element 19 can roll on the raceway between the rotor module 16 and the bearing ring 18, converting sliding friction into rolling friction, thereby reducing frictional resistance and improving rotational efficiency and service life.
[0027] One end of the outer casing 12 is provided with a rear end cover 11, which has several sets of fixing holes 15. The rear end cover 11 is used to fix and support the internal components of the motor bearing assembly 10, and the fixing holes 15 can be used to connect with other components of the motor bearing assembly 10. At the same time, both ends of the rear end cover 11 are protruding parts, which can conduct heat for the entire motor bearing assembly 10. When the motor bearing assembly 10 is installed in a certain position through the rear end cover 11, the position can be a metal position. When the motor bearing assembly 10 is working, the heat generated will be discharged by the protruding parts at both ends of the rear end cover 11, and the protruding parts at both ends will contact the external metal material, so that the rear end cover 11 can quickly transfer heat into the metal material.
[0028] A wire clamp 14 is fixedly installed on the rear cover 11. The wire clamp 14 is used to fix and organize the wires, so that the wires can be arranged in an orderly manner, preventing the wires from shifting or wearing due to vibration and other factors during the operation of the motor bearing assembly 10, and ensuring the stability and safety of the electrical connection.
[0029] A front cover 13 is installed on one side of the outer housing 12. The front cover 13 provides mounting support for the internal components of the motor bearing assembly 10, ensuring that these components maintain the correct positional relationship when the motor bearing assembly 10 is running. At the same time, threaded openings can be provided on the front cover 13, which can facilitate the assembly and disassembly of components. The threaded openings can also be used to install some accessories, such as sensors, junction boxes, etc., to meet the different functional requirements of the motor bearing assembly 10.
[0030] A single bearing needs to withstand all radial and axial forces during motor operation, resulting in a large load and making it prone to wear and fatigue. Therefore, the components inside the motor bearing assembly 10 need to be used in compliance with regulations as much as possible.
[0031] The rolling element 19 has several sets of sliding grooves 110, and an elastic element 111 is fixedly installed inside the sliding groove 110. A limiting post 112 is fixedly installed on the elastic element 111. The elastic element 111 can continuously push out the limiting post 112, and the limiting post 112 can contact the rotor module 16. Importantly, one side of the sliding groove 110 is of normal equidistant size, while the other side has a structure that gradually narrows inward. When the rotor module 16 rotates clockwise normally, the rotor module 16 will bring the contacting limiting post 112 into the normal-sized interior of the sliding groove 110, and the rotor module 16 can work normally. However, if the current flows in the opposite direction due to operator error, the rotor module 16 may rotate counterclockwise, which will lead to excessive wear of the parts. To avoid this situation:
[0032] When the rotor module 16 is rotating, it will contact the limiting post 112 to the other side of the narrow space. The limiting post 112 will gradually approach the outside of the rolling element 19. When the limiting post 112 gradually contacts the rolling element 19, it will increase the contact area between the rotor modules 16. Thus, the rotor module 16 will be limited by the limiting post 112, and the rotor module 16 will not rotate, thereby protecting the structure.
[0033] The rolling element 19 has a limiting groove 114 near the slide groove 110, and a limiting block 113 is fixedly installed on the limiting post 112. The limiting block 113 can fit into the slide groove 110. When the limiting post 112 moves, the limiting block 113 will slide synchronously in the slide groove 110. Thus, the limiting post 112 can be limited by the limiting block 113 during use, which can prevent the limiting post 112 from tilting up during use, thereby improving stability.
[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A plastic-encapsulated integrated single-bearing motor, comprising a motor bearing assembly (10), characterized in that: The motor bearing assembly (10) includes an outer housing (12), which is a cylindrical structure. The outer housing (12) contains a rotor module (16) and a stator module (17). A bearing ring (18) is fixedly installed inside the outer housing (12). A rolling element (19) is provided between the bearing ring (18) and the rotor module (16). Several sets of sliding grooves (110) are provided on the rolling element (19). An elastic element (111) is fixedly installed inside the several sets of sliding grooves (110). A limit post (112) is fixedly installed on the elastic element (111). One side of the sliding groove (110) is of normal equidistant size, while the other side is a structure that gradually shrinks inward.
2. The molded integrated single-bearing motor according to claim 1, characterized in that: The rolling element (19) has a limiting groove (114) near the slide groove (110), and a limiting block (113) is fixedly installed on the limiting post (112). The limiting block (113) can be adapted to the slide groove (110). When the limiting post (112) moves, the limiting block (113) will slide synchronously in the slide groove (110).
3. The molded integrated single-bearing motor according to claim 1, characterized in that: The rolling element (19) has several sets of balls inside, and the balls of the rolling element (19) can roll on the raceway between the rotor module (16) and the bearing ring (18).
4. The molded integrated single-bearing motor according to claim 1, characterized in that: One end of the outer casing (12) is provided with a rear end cover (11), and the rear end cover (11) is provided with a number of fixing holes (15), and the two ends of the rear end cover (11) are protruding parts.
5. A molded integrated single-bearing motor according to claim 4, characterized in that: A wire clamp (14) is fixedly installed on the rear cover (11), and the wire clamp (14) is used to fix and organize the wires.
6. A molded integrated single-bearing motor according to claim 4, characterized in that: A front cover (13) is installed on one side of the outer casing (12), and a threaded opening can be made on the front cover (13).