Motor support structure with metal inner sleeve

Abstract

The utility model relates to a motor support structure with a metal inner sleeve, which comprises a motor support, the motor support is provided with an annular bearing chamber and the metal inner sleeve sleeved in the bearing chamber, and the metal inner sleeve is provided with a mounting port for sleeving a bearing. According to the motor support structure with the metal inner sleeve disclosed by the utility model, the metal inner sleeve is coated in the bearing chamber on the basis of the original plastic support, and compared with the structure that a ball bearing is directly assembled in the bearing chamber of the plastic motor support of the existing product, the motor support structure with the metal inner sleeve has the advantages that the abrasion of the ball bearing to the plastic bearing chamber is reduced; compared with plastic, the metal inner sleeve is better in size control, not prone to deformation and capable of being tightly matched with the ball bearing after running for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor field especially relates to a motor support structure with metal inner sleeve. BACKGROUND

[0002] With the progress of science and technology and the improvement of living standards, people's appearance and function requirements of household appliances such as fans are also increasing. In order to pursue higher energy efficiency, fan motors gradually change from brush motors to brushless motors. At the same time, in order to realize more functions, the motor design also changes from the traditional shaft motor to the shaftless motor, which connects the functional accessories through the middle wire. However, the shaftless motor often produces abnormal noise after long-term operation, which not only affects the user's experience, but also is unacceptable to customers. One of the main reasons for the abnormal noise of this type of motor is that the bearing and the plastic bearing chamber of the support are worn out due to long-term operation, resulting in loosening. SUMMARY

[0003] The utility model provides a motor support structure with metal inner sleeve, aims at at least solve one of the technical problems existing in prior art.

[0004] The utility model discloses a motor support structure with metal inner sleeve, which comprises a motor support, a bearing chamber in the form of a ring is provided on the motor support, a metal inner sleeve is sleeved in the bearing chamber, and a mounting port for sleeving the bearing is formed on the metal inner sleeve.

[0005] Further, the bottom end of the bearing chamber is provided with a ring of annularly running steps, and the bottom end of the metal inner sleeve is in contact with the steps.

[0006] Further, the surface of the bearing chamber is upwardly provided with a ring of first extension portions, and the outer ring of the first extension portions is circumferentially provided with a plurality of reinforcing ribs integrally connected with the inner bottom surface of the motor support.

[0007] Further, the bottom end of the bearing chamber is provided with a ring of second extension portions, and the cross-sectional thickness of the second extension portions is greater than the thickness of the first extension portions.

[0008] Further, the outer ring of the metal inner sleeve is provided with at least a ring of protruding portions, wherein the protruding portions and the other parts of the outer ring of the metal inner sleeve are respectively in contact with the inner ring of the bearing chamber.

[0009] Further, the protruding portions are in the form of straight-line knurling protruding vertically and densely on the outer ring of the metal inner sleeve.

[0010] Further, the protruding parts are arranged on the outer ring of the metal inner sleeve at intervals, and a groove is arranged on the outer ring of the metal inner sleeve between adjacent protruding parts, wherein the pair of protruding part and groove are matched with the inner ring of the bearing chamber.

[0011] Further, the material of the motor support is plastic.

[0012] Further, the material of the metal inner sleeve is aluminum alloy or brass.

[0013] The beneficial effects of the utility model include:

[0014] The motor support structure has the advantages that the metal inner sleeve is arranged in the bearing chamber of the original plastic support, the structure design reduces the abrasion of the plastic bearing chamber by the ball bearing, the metal inner sleeve has better size control and is not easy to deform, and the metal inner sleeve can still keep fastening cooperation with the ball bearing after long-time operation.

[0015] In addition, additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a top view of the motor support structure with a metal inner sleeve according to an embodiment of the utility model.

[0017] Figure 2 is a longitudinal section view of the motor support structure with a metal inner sleeve according to an embodiment of the utility model.

[0018] Figure 3 is a first angle perspective view of the motor support structure with a metal inner sleeve according to an embodiment of the utility model.

[0019] Figure 4 is a second angle perspective view of the motor support structure with a metal inner sleeve according to an embodiment of the utility model.

[0020] Figure 5 is a bottom view of the motor support structure with a metal inner sleeve according to an embodiment of the utility model.

[0021] Figure 6 is a side view of the metal inner sleeve according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0023] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0024] Furthermore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and not for limiting the scope of the invention. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0025] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from one another. For example, without departing from the scope of this disclosure, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0026] Reference Figures 1 to 6 As shown, in some embodiments, this utility model discloses a motor bracket structure with a metal inner sleeve, which includes:

[0027] Reference Figures 1 to 4 The motor bracket 100 shown has an annular bearing chamber 110, which is used to assemble other components such as the motor stator. In some embodiments, the motor bracket 100 is made of plastic.

[0028] Continue to refer to Figures 2 to 4 As shown, a metal inner sleeve 200 is fitted inside the bearing housing 110, and the metal inner sleeve 200 has an installation port 210 for fitting a bearing. By setting an annular bearing housing on the motor bracket and fitting the metal inner sleeve therein, the structure of the motor bracket is optimized, and the overall stability and durability are improved.

[0029] The aforementioned motor bracket structure consists of a metal inner sleeve encased in plastic inside the bearing housing, based on the original plastic bracket. Compared to the existing plastic motor bracket structure where the bearing housing is directly fitted with ball bearings, this structural design reduces wear on the plastic bearing housing caused by the ball bearings. Moreover, the metal inner sleeve is easier to control in terms of size and less prone to deformation than plastic, and can maintain a tight fit with the ball bearings even after long-term operation.

[0030] Continue to refer to Figure 2 As shown, the bottom end of the bearing chamber 110 is provided with a ring-shaped step 111. The bottom end of the metal inner sleeve 200 contacts the step 111. The ring-shaped step supports the metal inner sleeve 200. The ring-shaped step at the bottom end of the bearing chamber contacts the bottom end of the metal inner sleeve, which enhances the stability of the structure and reduces wear caused by poor contact.

[0031] Reference Figure 1 Combination Figure 2 As shown, the bearing housing 110 has a first extension 112 extending upwards on its surface. The outer circumference of the first extension 112 is provided with multiple reinforcing ribs 113 integrally connected to the inner bottom surface of the motor bracket 100. The design of the first extension and reinforcing ribs on the bearing housing surface enhances the structural strength of the motor bracket and improves its load-bearing capacity. (Refer to...) Figures 1 to 4 As shown, the bottom end of the bearing housing 110 is provided with a second extension 114. The cross-sectional thickness of the second extension 114 is greater than the thickness of the first extension 112. Similarly, the cross-sectional thickness of the second extension is greater than that of the first extension, which improves the durability and impact resistance of the motor bracket.

[0032] Continue to refer to Figure 2 Combination Figure 6 As shown, the outer ring of the metal inner sleeve 200 has at least one protrusion 220, and the protrusion 220 and other parts of the outer ring of the metal inner sleeve 200 respectively cooperate and abut against the inner ring of the bearing chamber 110. (Continue referring to...) Figure 6 As shown, specifically, the protrusions 220 are densely and vertically distributed on the outer ring of the metal inner sleeve 200, forming a straight-knurled shape. The protrusions 220 are spaced apart on the outer ring of the metal inner sleeve 200, and grooves 230 are provided on the outer ring of the metal inner sleeve 200 between adjacent protrusions 220. A pair of protrusions 220 and grooves 230 respectively cooperate and abut against the inner ring of the bearing chamber 110. If the motor bracket is made of plastic, and the metal inner sleeve with a ring of protrusions is plastic-coated, preferably the protrusions are in the shape of straight-knurled lines on the outer ring, the fit between the motor bracket and the metal inner sleeve is more stable.

[0033] In some embodiments, the metal inner sleeve 200 is made of aluminum alloy or brass, which improves the strength and corrosion resistance of the metal inner sleeve, and allows for the selection of appropriate materials based on cost and performance requirements.

[0034] The above description is merely a preferred embodiment of this utility model. This utility model is not limited to the above-described embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this disclosure, as long as they achieve the same technical effect, should be included within the scope of protection of this disclosure and fall under the protection scope of this utility model. Within the protection scope of this utility model, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A motor bracket structure with a metal inner sleeve, characterized in that, include: A motor bracket (100) is provided with an annular bearing chamber (110). A metal inner sleeve (200) is fitted inside the bearing housing (110), and the metal inner sleeve (200) has an installation port (210) for fitting the bearing.

2. The motor bracket structure with a metal inner sleeve according to claim 1, characterized in that, The bearing housing (110) has a ring-shaped step (111) at its bottom end, and the bottom end of the metal inner sleeve (200) is in contact with the step (111).

3. The motor bracket structure with a metal inner sleeve according to claim 2, characterized in that, The bearing housing (110) has a first extension (112) on its surface facing upwards. The outer circumference of the first extension (112) is provided with a plurality of reinforcing ribs (113) that are integrally connected to the inner bottom surface of the motor bracket (100).

4. The motor bracket structure with a metal inner sleeve according to claim 3, characterized in that, The bearing housing (110) has a second extension (114) at the bottom end, and the cross-sectional thickness of the second extension (114) is greater than the thickness of the first extension (112).

5. The motor bracket structure with a metal inner sleeve according to claim 1, characterized in that, The outer ring of the metal inner sleeve (200) is provided with at least one protrusion (220). The protrusion (220) and other parts of the outer ring of the metal inner sleeve (200) respectively cooperate and abut against the inner ring of the bearing chamber (110).

6. The motor bracket structure with a metal inner sleeve according to claim 5, characterized in that, The protrusions (220) are densely and vertically distributed on the outer ring of the metal inner sleeve (200) in a straight knurled shape.

7. The motor bracket structure with a metal inner sleeve according to claim 5, characterized in that, The protrusions (220) are spaced apart on the outer ring of the metal inner sleeve (200), and grooves (230) are provided on the outer ring of the metal inner sleeve (200) between adjacent protrusions (220). Among them, the pair of protrusions (220) and grooves (230) respectively cooperate with and abut against the inner ring of the bearing chamber (110).

8. The motor bracket structure with a metal inner sleeve according to claim 1, characterized in that, The motor bracket (100) is made of plastic.

9. The motor bracket structure with a metal inner sleeve according to claim 1, characterized in that, The metal inner sleeve (200) is made of aluminum alloy or brass.

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