Balance wheel motor rotor shell structure
By adopting a structure combining an outsourcing plastic layer, an insourcing plastic layer and a metal magnetic ring in the rotor shell of the balance motor, the problem of increasing the weight of the magnetic ring caused by the increase in the outer diameter in the prior art is solved, and the inertia reduction and cost reduction are achieved. for smaller size motors.
Patent Information
- Application Number
- CN202421044370.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-14
AI Technical Summary
When the outer diameter of the existing balance motor rotor shell structure increases, the volume and weight of the magnetic ring increases, which increases the cost of the motor and the types of parts in stock, and cannot effectively reduce the moment of inertia.
The structure is adopted that combines the outer-clad plastic layer, shell, inner-clad plastic layer and metal magnetic ring. The use of magnetic ring is reduced through the connection structure between the inner-clad plastic layer and the shell. Plastic materials and saddle-shaped, conical, triangular or linear convex connecting structure to improve contact area and stability.
Reduces moment of inertia in the rotor housing, reduces cost and reduces the motor's stock parts for smaller balance motors.
Smart Images
Figure CN222321218U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor equipment, in particular to a rotor housing structure of a pendulum motor. Background Art
[0002] The rotor shells used in the current logistics industry's pendulum motors mostly adopt a three-layer structure of an outer plastic layer, a shell, and a magnetic ring. If the outer diameter of this structure increases, the volume of the magnetic ring will increase accordingly while the outer plastic layer and the shell wall thickness remain unchanged. Since the magnetic ring is made of metal, the corresponding weight will increase, which will increase the motor's moment of inertia and increase the power while the angular acceleration remains unchanged, thereby increasing the cost from a performance perspective; secondly, it will increase the types of magnetic rings, resulting in an increase in inventory parts. In view of this, we propose a pendulum motor rotor shell structure to solve the existing problem. Utility Model Content
[0003] The purpose of the utility model is to provide a rotor housing structure of a balance wheel motor to solve the problems raised in the above background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A rotor shell structure of a balance wheel motor comprises an outer plastic coating layer, a shell body, an inner plastic coating layer, a magnetic ring and a permanent magnet. The outer ring surface of the shell body is fixedly coated with the outer plastic coating layer, the inner ring surface of the shell body is fixedly coated with the inner plastic coating layer, the inner ring surface of the inner plastic coating layer is fixedly connected to the magnetic ring, and the inner ring surface of the magnetic ring is fixedly installed with a permanent magnet.
[0006] Furthermore, the outer plastic coating layer and the inner plastic coating layer are both made of plastic materials.
[0007] Furthermore, a connection structure is provided on the contact surface between the inner plastic-coating layer and the shell, and the connection structure is integrally injection-molded with the inner plastic-coating layer.
[0008] Furthermore, the connection structure is a plurality of saddle-shaped protrusions evenly distributed on the outer annular surface of the inner plastic-coated layer.
[0009] Furthermore, the connection structure is a plurality of conical protrusions evenly distributed on the outer annular surface of the inner plastic coating layer.
[0010] Furthermore, the connection structure is a plurality of triangular structures evenly distributed on the outer annular surface of the inner plastic coating layer.
[0011] Furthermore, the connection structure is a plurality of linear protrusions evenly distributed on the outer annular surface of the inner plastic coating layer, and the linear protrusions are perpendicularly staggered with each other.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model changes the metal magnetic ring into a structure in which an inner plastic layer and a metal magnetic ring are combined. This structure reduces the rotational inertia of the rotor housing and reduces the cost in terms of performance. At the same time, the structure in which the inner plastic layer and the metal magnetic ring are combined can also be used as the rotor housing of a smaller-sized pendulum motor, reducing the inventory of motor parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0014] Figure 2 It is a front cross-sectional structural schematic diagram of the utility model;
[0015] Figure 3 The surface of the inner plastic layer is a trapezoidal schematic diagram;
[0016] Figure 4 The surface of the inner plastic layer is a triangle schematic diagram;
[0017] Figure 5 The schematic diagram of the inner plastic layer surface being knurled;
[0018] In the figure: 1. outer plastic layer; 2. shell; 3. inner plastic layer; 4. magnetic ring; 5. permanent magnet; 6. inner plastic layer with trapezoidal surface; 7. inner plastic layer with triangular surface; 8. inner plastic layer with knurled surface. DETAILED DESCRIPTION
[0019] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0020] Example 1
[0021] A rotor shell structure of a balance wheel motor comprises an outer plastic coating layer, a shell body, an inner plastic coating layer, a magnetic ring and a permanent magnet. The outer ring surface of the shell body is fixedly coated with the outer plastic coating layer, the inner ring surface of the shell body is fixedly coated with the inner plastic coating layer, the inner ring surface of the inner plastic coating layer is fixedly connected to the magnetic ring, and the inner ring surface of the magnetic ring is fixedly installed with a permanent magnet.
[0022] The present invention provides an inner plastic coating layer between the housing and the magnetic ring, and the rotational inertia of the rotor housing can be reduced through the inner plastic coating layer.
[0023] The outer plastic-coating layer and the inner plastic-coating layer are both made of plastic materials.
[0024] A connection structure is provided on the contact surface between the inner plastic-coating layer and the shell, and the connection structure is integrally injection-molded with the inner plastic-coating layer.
[0025] The connection structure can increase the contact area between the inner plastic layer and the shell, and improve the stability of the structure.
[0026] The connection structure is a plurality of saddle-shaped protrusions evenly distributed on the outer annular surface of the inner plastic-coated layer.
[0027] Example 2
[0028] The structure of this embodiment is substantially the same as that of the embodiment 1, and the difference lies in that the connection structure is a plurality of conical protrusions evenly distributed on the outer annular surface of the inner plastic coating layer.
[0029] Example 3
[0030] The structure of this embodiment is substantially the same as that of embodiment 1 or 2, and the difference lies in that the connection structure is a plurality of triangular structures evenly distributed on the outer annular surface of the inner plastic coating layer.
[0031] Example 4
[0032] The structure of this embodiment is substantially the same as that of one of embodiments 1-3, and the difference lies in that the connection structure is a plurality of linear protrusions evenly distributed on the outer annular surface of the inner plastic coating layer, and the linear protrusions are perpendicularly staggered with each other.
[0033] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.
Claims
1. A rotor housing structure of a balance wheel motor, characterized in that: The invention comprises an outer plastic coating layer (1), and inwardly therefrom are a shell (2), an inner plastic coating layer (3), a magnetic ring (4) and a permanent magnet (5); the outer ring surface of the shell is fixedly coated with the outer plastic coating layer, the inner ring surface of the shell is fixedly coated with the inner plastic coating layer, the inner ring surface of the inner plastic coating layer is fixedly connected to the magnetic ring, and the inner ring surface of the magnetic ring is fixedly installed with a permanent magnet.
2. The rotor housing structure of a balance motor according to claim 1, characterized in that: The outer plastic-coating layer and the inner plastic-coating layer are both made of plastic materials.
3. The rotor housing structure of a balance motor according to claim 2, characterized in that: A connection structure is provided on the contact surface between the inner plastic-coating layer and the shell, and the connection structure is integrally injection-molded with the inner plastic-coating layer.
4. The rotor housing structure of a balance motor according to claim 3, characterized in that: The connection structure is a plurality of saddle-shaped protrusions evenly distributed on the outer annular surface of the inner plastic-coated layer.
5. The rotor housing structure of a balance motor according to claim 3, characterized in that: The connection structure is a plurality of conical protrusions evenly distributed on the outer annular surface of the inner plastic coating layer.
6. The rotor housing structure of a balance wheel motor according to claim 3, characterized in that: The connection structure is a plurality of triangular structures evenly distributed on the outer ring surface of the inner plastic coating layer.
7. The rotor housing structure of a balance motor according to claim 3, characterized in that: The connection structure is a plurality of linear protrusions evenly distributed on the outer annular surface of the inner plastic coating layer, and the linear protrusions are vertically staggered with each other.