Motor bearing bracket and motor
By using the precision matching design of plastic connectors and metal inserts in the brushless motor bearing bracket, the problems of low accuracy and high cost of bearing brackets are solved, and the precision matching of bearing brackets and equipment fixtures is achieved, reducing the risk of production damage and reducing costs.
Patent Information
- Application Number
- CN201910817748.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-08-30
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2039-08-30
AI Technical Summary
The bearing bracket design of existing brushless motors has low accuracy, which leads to problems such as easy damage to the bearings in production and high cost.
The connection and metal insert are designed with plastic materials. Holes of different diameters are provided between the connector and the insert to achieve precise coordination, reducing the risk of damage to the bearing during production, and the production cost is low.
It realizes precise coordination between bearing brackets and equipment fixtures, reduces the risk of damage to bearings during production, and reduces production costs, and has broad market application prospects.
Smart Images
Figure CN110957840B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of brushless motors, and more particularly to a motor bearing bracket and a motor. Background Art
[0002] Existing brushless motor bearing housings generally use two designs: an all-metal design, which offers high precision but is expensive. The other uses a plastic component with a metal insert. These metal inserts are often through-holes. During motor assembly, the mating surface between the bearing bracket and the equipment or tooling remains plastic, but this surface typically has a precision of ±0.05mm, resulting in low precision and significant vibration, which can easily damage the bearing during production. Therefore, a motor bearing bracket solution is necessary. Summary of the Invention
[0003] In response to the shortcomings in the prior art, the purpose of the present invention is to provide a motor bearing bracket, whose bearing bracket assembly can be precisely matched with the equipment fixture, reducing the risk of bearing damage during production, and has low production costs and broad market application prospects.
[0004] In order to achieve these objects and other advantages according to the present invention, a motor bearing support is provided, wherein the motor bearing support comprises at least one bearing support assembly, the bearing support assembly comprising:
[0005] a first connecting member defining a first placement hole penetrating the first connecting member in an axial direction of the motor bearing, and
[0006] A first insert is arranged in the first placement hole, and the first insert defines a second placement hole for accommodating a bearing and a second through hole for accommodating an equipment fixture, wherein the aperture of the second placement hole is larger than the aperture of the second through hole.
[0007] Preferably, a first support wall extends horizontally from the top of the first connector, a first through hole is provided in the middle of the first support wall, a second support wall extends horizontally from the top of the first insert, and a second through hole is provided in the middle of the second support wall.
[0008] Preferably, the diameter of the first through hole is larger than the diameter of the second through hole.
[0009] Preferably, a bearing is fixed in the second placement hole, and the bearing is sleeved on the surface of the rotor shaft.
[0010] Preferably, both upper and lower ends of the rotor shaft are fixedly connected to the equipment fixture.
[0011] Preferably, the equipment fixture is engaged with the first insert via a second supporting wall located at the periphery of the second through hole.
[0012] Preferably, the first connecting member is made of plastic, and the first insert is a metal insert.
[0013] The present invention also provides a motor, comprising the above-mentioned motor bearing bracket, which is arranged inside the motor.
[0014] The present invention has at least the following beneficial effects: The present invention provides a motor bearing bracket and a motor, wherein the bearing bracket assembly can be precisely matched with the equipment jig, thereby reducing the risk of bearing damage during production, and has low production costs and broad market application prospects.
[0015] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic structural diagram of a motor bearing bracket according to an embodiment of the present invention;
[0017] Figure 2 A cross-sectional view of a motor bearing bracket according to an embodiment of the present invention;
[0018] Figure 3 FIG. 1 is an exploded cross-sectional view of a bearing support assembly according to an embodiment of the present invention. DETAILED DESCRIPTION
[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings. The foregoing and other purposes, features, aspects and advantages of the present invention will become more apparent so that those skilled in the art can implement them with reference to the text of the specification. In the accompanying drawings, for the sake of clarity, shapes and sizes may be exaggerated, and the same reference numerals will be used in all figures to indicate the same or similar parts. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, top, bottom, etc. are based on the orientation or positional relationship shown in the accompanying drawings. In particular, "height" is equivalent to the size from top to bottom, "width" is equivalent to the size from left to right, and "depth" is equivalent to the size from front to back. These relative terms are for the sake of convenience of explanation and are generally not intended to require a specific orientation. Terms related to attachment, connection, etc. (e.g., "connection" and "attachment") refer to the relationship between these structures being directly or indirectly fixed or attached to each other through an intermediate structure, as well as the relationship of movable or rigid attachment, unless otherwise explicitly stated.
[0020] As an embodiment of the present invention, refer to Figures 1 to 3 The present invention provides a motor bearing support, which includes at least one bearing support assembly 11, and the bearing support assembly 11 includes:
[0021] The first connecting member 111 is defined with a first placement hole 1111 penetrating the first connecting member along the axial direction of the motor bearing, and
[0022] The first insert 112 is arranged in the first placement hole, and the first insert is defined by a second placement hole 1123 for accommodating a bearing and a second through hole 1122 for accommodating an equipment fixture, wherein the aperture of the second placement hole is larger than the aperture of the second through hole.
[0023] Furthermore, a first support wall 1112 extends horizontally from the top of the first connector 111, with a first through hole 1113 defined in the middle of the first support wall 1112. A second support wall 1121 extends horizontally from the top of the first insert 112, with a second through hole 1122 defined in the middle of the second support wall 1121. The diameter of the first through hole 1111 is larger than that of the second through hole 1122.
[0024] As a preferred embodiment of the present invention, the first insert 112 is processed by a CNC machining center, and the machining accuracy of the second through hole 1122 can generally reach 0.01 mm, and can reach 0.005 mm by fine machining.
[0025] Furthermore, a bearing 13 is fixedly connected to the second placement hole 1123, and the bearing 13 is sleeved on the surface of the rotor shaft 12. The upper and lower ends of the rotor shaft 12 are fixedly connected to the equipment fixture 14.
[0026] Furthermore, the device fixture 14 is secured to the first insert 112 via a second support wall 1121 located outside the second through-hole 1122. The fit between the device fixture 14 and the first insert 112 is an internal clearance fit. The gap between the device fixture 14 and the first connector 111 is D, which is 0.5-1 mm.
[0027] Furthermore, the first connecting member 111 is made of plastic, and the first insert 112 is a metal insert, which is easy to manufacture and has low cost.
[0028] The present invention also provides a motor, comprising the above-mentioned motor bearing bracket, which is arranged inside the motor.
[0029] Furthermore, the above-mentioned motor bearing bracket has at least one bearing bracket assembly 11, and the bearing bracket assembly 11 includes: a first connecting member 111, which is defined by a first placement hole 1111 passing through the first connecting member along the axial direction of the motor bearing, and a first insert 112 arranged in the first placement hole, the first insert is defined by a second placement hole 1123 for accommodating the bearing and a second through hole 1122 for accommodating the equipment fixture, wherein the aperture of the second placement hole is larger than the aperture of the second through hole.
[0030] Furthermore, the first connecting member 111 is made of plastic, and the first insert 112 is a metal insert, which is easy to manufacture and has low cost.
[0031] Furthermore, a first support wall 1112 extends horizontally from the top of the first connector 111, with a first through hole 1113 defined in the middle of the first support wall 1112. A second support wall 1121 extends horizontally from the top of the first insert 112, with a second through hole 1122 defined in the middle of the second support wall 1121. The diameter of the first through hole 1111 is larger than that of the second through hole 1122.
[0032] Furthermore, a bearing 13 is fixedly connected to the second placement hole 1123, and the bearing 13 is sleeved on the surface of the rotor shaft 12. The upper and lower ends of the rotor shaft 12 are fixedly connected to the equipment fixture 14.
[0033] Furthermore, the device fixture 14 is secured to the first insert 112 via a second support wall 1121 located outside the second through-hole 1122. The fit between the device fixture 14 and the first insert 112 is an internal clearance fit. The gap between the device fixture 14 and the first connector 111 is D, which is 0.5-1 mm.
[0034] In summary, the bearing bracket assembly of the above-mentioned motor can be precisely matched with the equipment fixture, reducing the risk of bearing damage during production, and has low production costs, and has broad market application prospects.
[0035] The number of devices and processing scales described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the present invention will be readily apparent to those skilled in the art.
[0036] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Further modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.
Claims
1. A motor bearing bracket, characterized in that: The motor bearing support comprises at least one bearing support assembly (11), wherein the bearing support assembly (11) comprises: A first connecting member (111) is defined with a first placement hole (1111) penetrating the first connecting member along the axial direction of the motor bearing, and a first insert (112) disposed in the first placement hole, the first insert defining a second placement hole (1123) for accommodating a bearing and a second through hole (1122) for accommodating a device fixture, wherein the aperture of the second placement hole is larger than the aperture of the second through hole; A bearing (13) is fixedly connected in the second placement hole (1123), and the bearing (13) is sleeved on the surface of the rotor shaft (12); The upper and lower ends of the rotor shaft (12) are both fixedly connected to the equipment fixture (14); The equipment jig (14) is engaged with the first insert (112) via a second support wall (1121) located on the periphery of the second through hole (1122); The first connecting piece (111) is made of plastic, and the first insert (112) is a metal insert.
2. The motor bearing bracket according to claim 1, characterized in that: A first support wall (1112) extends horizontally from the top of the first connecting member (111), a first through hole (1113) is provided in the middle of the first support wall (1112), a second support wall (1121) extends horizontally from the top of the first insert (112), and the second through hole (1122) is provided in the middle of the second support wall (1121).
3. The motor bearing bracket according to claim 2, characterized in that: The aperture of the first through hole (1111) is larger than the aperture of the second through hole (1122).
4. A motor, characterized in that: It comprises a motor bearing bracket according to any one of claims 1 to 3, which is arranged inside the motor.
Citation Information
Patent Citations
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