Outward rotation type micro generator structure

Abstract

The utility model provides an external rotation type micro generator structure. The external rotation type micro generator structure comprises a shaft center, a bearing support and a bearing set. The bearing support is sleeved on the axle center. The bearing set is sleeved on the bearing support and comprises a first bearing and a second bearing. The first bearing and the second bearing are arranged on the outer side of the bearing support in the axial direction of the axis. Therefore, not only can the high tension of the belt be borne, but also the noise during operation can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a generator structure, in particular to an outer-rotor micro-generator structure. BACKGROUND

[0002] In the prior art, the outer-rotor micro-generator is a kind of energy conversion device widely used in small equipment, which converts mechanical energy into electrical energy through rotary motion to meet the needs of low-power consumption equipment. This device is simple in structure and occupies less space, easy to install in various equipment, so it has been widely used in the field of automation equipment and other fields.

[0003] However, the outer-rotor micro-generator structure of the prior art often shortens the service life when dealing with high-tension belt load due to the limited bearing capacity of a single bearing. When the bearing is in an over-stressed state for a long time, the friction between the internal rotating components intensifies, thereby accelerating wear and tear, which may further cause the bearing to operate unstably, and even cause the phenomenon of jamming. In addition, the single bearing may lack sufficient support rigidity under high load conditions, which may easily cause deformation or deviation, thereby affecting the stability of the equipment.

[0004] At the same time, due to insufficient structural rigidity, abnormal vibration and noise may occur during operation, and the vibration may cause a resonance effect of the overall equipment, further causing the operation process to become more unstable. Therefore, there is still a lack of a technology that can effectively solve the above problems in the current market to meet the application requirements of efficient and stable operation and low noise. UTILITY MODEL CONTENT

[0005] The purpose of the present disclosure is to provide an outer-rotor micro-generator structure, which can not only improve the bearing capacity and cope with high-tension belt load by increasing the number of bearings and adding a bearing bracket, but also effectively reduce the noise during operation, thereby improving the stability of the equipment.

[0006] According to an embodiment of the structural embodiment of the present disclosure, an outer-rotor micro-generator structure is provided, which comprises a shaft, a bearing bracket, and a bearing set. The bearing bracket is sleeved on the shaft. The bearing set is sleeved on the bearing bracket and comprises a first bearing and a second bearing. The first bearing and the second bearing are respectively arranged on an outer side of the bearing bracket along an axial direction of the shaft.

[0007] Other embodiments of the foregoing embodiment are as follows: The foregoing bearing bracket comprises a first ring portion and a limiting ring portion. The limiting ring portion is connected to the first ring portion and is used for abutting the first bearing.

[0008] Other embodiments of the foregoing embodiment are as follows: The outer diameter of the limiting ring portion is greater than the outer diameter of the first ring portion.

[0009] Other implementations of the aforementioned embodiment include the following: the first bearing and the second bearing are disposed on the first ring portion.

[0010] Other implementations of the aforementioned embodiment include the following: the first bearing and the second bearing are in abutment with each other.

[0011] Other implementations of the aforementioned embodiment include the following: the bearing holder further comprises a second ring portion. The second ring portion is connected to the limiting ring portion relative to the first ring portion. The bearing set further comprises a third bearing. The third bearing is disposed on the second ring portion along the axial direction of the shaft.

[0012] Other implementations of the aforementioned embodiment include the following: the third bearing is in abutment with the limiting ring portion.

[0013] Other implementations of the aforementioned embodiment include the following: the limiting ring portion has an outer diameter greater than that of the second ring portion.

[0014] Other implementations of the aforementioned embodiment include the following: the outer rotating micro-turbine structure further comprises a riveting seat. The riveting seat is disposed on the shaft, and comprises a protruding portion. The protruding portion is in abutment with the second bearing and an end surface of the bearing holder.

[0015] Other implementations of the aforementioned embodiment include the following: the outer rotating micro-turbine structure further comprises a shaft sleeve. The shaft sleeve is disposed on the bearing set, and comprises an inner annular surface. The inner annular surface has a distance from the bearing holder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of an outer rotating micro-turbine structure according to an embodiment of the present disclosure;

[0017] Figure 2 is an exploded view of an outer rotating micro-turbine structure according to Figure 1 ;

[0018] Figure 3 is a cross-sectional view of an outer rotating micro-turbine structure according to Figure 1 ;

[0019] Figure 4 is a partial enlarged view of an outer rotating micro-turbine structure according to Figure 3 ;

[0020] In the drawings, the following reference signs are used:

[0021] 100: outer rotating micro-turbine structure

[0022] 110: shaft

[0023] 120: bearing holder

[0024] 121: first ring portion

[0025] 122: second ring portion

[0026] 123: limiting ring portion

[0027] 124: end face

[0028] 130: bearing set

[0029] 131: first bearing

[0030] 132: second bearing

[0031] 133: third bearing

[0032] 140: riveting seat

[0033] 141: convex portion

[0034] 150: rotor

[0035] 160: stator

[0036] 170: magnet

[0037] 180: shaft sleeve

[0038] 181: inner annular face

[0039] D: distance DETAILED DESCRIPTION

[0040] Embodiments of the present disclosure will be described below with reference to the accompanying drawings. For the sake of clear description, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the present disclosure. That is, in some embodiments of the present disclosure, these practical details are not necessary. In addition, for the sake of simplifying the drawings, some conventional structures and elements will be drawn in a simple schematic manner in the drawings; and repeated elements can be indicated using the same reference numerals.

[0041] Moreover, when an element (or unit or module etc.) is referred to as being "connected" to or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present. Like references relate to like elements throughout the specification and drawings of this disclosure, and the use or mention of "first" or "second" or "third" etc. terminology with respect to a use or application of the element does not generally limit the element to the corresponding use or application, but instead the first, second or third element is merely named as such for the sake of description and is not intended to limit the element or its associated use or application.

[0042] Referring to Figure 1 , Figure 2 and Figure 3 , wherein Figure 1 is a perspective view illustrating an outer-rotor micro-generator structure 100 according to an embodiment of the present disclosure; Figure 2 is an exploded view illustrating the outer-rotor micro-generator structure 100 according to Figure 1 ; and Figure 3 is a cross-sectional view illustrating the outer-rotor micro-generator structure 100 according to Figure 1 . In the present embodiment, the outer-rotor micro-generator structure 100 includes a shaft 110, a bearing support 120, and a bearing set 130.

[0043] The shaft 110 is a core component of the outer-rotor micro-generator structure 100, responsible for supporting the operation of the internal components of the generator and connected to the external drive to transmit a power. The shaft 110 needs to withstand the torque load from the external drive while maintaining the coordinated operation of the components of the generator, thereby ensuring the high efficiency and stability of the generator.

[0044] The bearing support 120 is a hollow tube and is sleeved on the shaft 110. The bearing support 120 includes a first ring portion 121, a second ring portion 122, and a limiting ring portion 123. The first ring portion 121 and the second ring portion 122 are opposite to each other and are connected between the first ring portion 121 and the second ring portion 122 by the limiting ring portion 123. By adding the bearing support 120, the stability of the overall structure can be effectively improved, and the noise problem in the operation process can be improved. Compared with the prior art, the bearing set 130 is no longer in direct contact with the shaft 110, which helps to reduce the transmission of friction and vibration. The noise generated during operation can be effectively reduced, especially in the case of long-time operation, to avoid the resonance phenomenon caused by vibration, thereby prolonging the service life.

[0045] In the present embodiment, the outer diameter of the limiting ring portion 123 is greater than the outer diameter of the first ring portion 121 and the outer diameter of the second ring portion 122. This arrangement helps to limit the movement of the bearing set 130, preventing it from shifting or falling off, thereby ensuring that the bearing set 130 maintains a stable relative position during operation. The role of the limiting ring portion 123 is to ensure that the bearing set 130 remains stable during operation, preventing unnecessary displacement and reducing friction and wear caused by shifting, thereby improving the overall stability of the structure.

[0046] The bearing set 130 is sleeved on the bearing support 120 and includes a first bearing 131 and a second bearing 132. The first bearing 131 and the second bearing 132 are respectively arranged on an outer side of the bearing support 120 along an axial direction of the shaft 110. In this way, by arranging multiple bearings, the load from the high-tension belt can be effectively shared, significantly improving the load-carrying capacity of the outer-rotating micro-generator structure 100. Compared with a single bearing, multiple bearings not only can withstand greater tension, but also can effectively reduce wear and vibration caused by excessive load.

[0047] In the present embodiment, the first bearing 131 and the second bearing 132 are annularly arranged on the first ring portion 121 of the bearing support 120, and the first bearing 131 abuts against the limiting ring portion 123 of the bearing support 120. In this way, the stability and positional accuracy of the first bearing 131 during operation are ensured, avoiding shifting in a high-load or high-tension environment.

[0048] In the present embodiment, the first bearing 131 and the second bearing 132 abut against each other, forming a close configuration. In this way, it helps to improve the stability between the two bearings, reducing the relative displacement caused by the rotation of the shaft 110 or changes in load, especially when higher loads are applied, improving the stability of the overall structure.

[0049] In the present embodiment, the bearing set 130 can further include a third bearing 133. The third bearing 133 is sleeved on the second ring portion 122 along the axial direction of the shaft 110 and abuts against the limiting ring portion 123 of the bearing support 120. The outer diameter of the third bearing 133 is greater than the outer diameter of the first bearing 131 and the outer diameter of the second bearing 132, but not limited thereto. Since the first bearing 131 and the second bearing 132 are annularly arranged on the first ring portion 121 of the bearing support 120, and the third bearing 133 is annularly arranged on the second ring portion 122 of the bearing support 120, this arrangement helps to more evenly share the load from different directions, thereby effectively reducing local stress concentration, improving the stability of overall operation and prolonging the service life.

[0050] In this embodiment, the outer-rotor micro-generator structure 100 can further include a riveting seat 140. The riveting seat 140 is sleeved on the shaft 110, and is used to fix the combination between the shaft 110 and a rotor 150. The riveting seat 140 includes a convex portion 141 (indicated in Figure 4 ). The convex portion 141 abuts against an end face 124 of the bearing support 120 and the second bearing 132. Not only does it make the shaft 110 and the rotor 150 firmly connected, but also effectively supports and fixes other internal components, such as the first bearing 131 and the second bearing 132. In this way, it ensures that each component maintains accurate positioning during operation, avoiding the impact on performance due to displacement or instability.

[0051] Please continue to refer to Figure 2 . The outer-rotor micro-generator structure 100 can further include a stator 160 and a magnet 170. The stator 160 and the magnet 170 are both arranged in a ring shape. The magnet 170 surrounds the outer periphery of the stator 160. The rotor 150 is sleeved outside the magnet 170 and covers the stator 160 and the magnet 170. In detail, the rotor 150, the stator 160 and the magnet 170 are tightly fitted to form the core power and energy conversion structure. The stator 160 is responsible for generating an alternating electromagnetic field, the magnet 170 provides a stable magnetic field, and the rotor 150 rotates with the interaction of the alternating magnetic field of the stator 160 and the magnetic field of the magnet 170. Through the synergistic effect of the three, the conversion between electrical energy and mechanical energy is realized.

[0052] Please refer to Figure 3 and Figure 4 , wherein Figure 4 is a partial enlarged schematic view of the outer-rotor micro-generator structure 100 according to Figure 3 . The outer-rotor micro-generator structure 100 further includes a shaft sleeve 180. The shaft sleeve 180 is sleeved on the bearing set 130. The shaft sleeve 180 includes an inner annular surface 181, and the inner annular surface 181 has a distance D with the bearing support 120. In this way, a sufficient gap is provided to avoid friction or unnecessary contact. Not only can it effectively reduce friction loss and reduce energy consumption, but also can improve the power transmission efficiency during rotation. In addition, the shaft sleeve 180 can also buffer potential interference caused by thermal expansion or the action of the shaft 110, ensuring that each component maintains good coordination during operation.

[0053] In summary, the outer-rotor micro-generator structure of the present disclosure has the following advantages: first, through the multi-bearing arrangement, the load from the high-tension belt is effectively shared, improving the carrying capacity and stability of the overall structure; second, the arrangement of the bearing support improves the noise during operation; and third, the outer diameter of the limiting ring portion is greater than the outer diameters of the first ring portion and the second ring portion, enhancing the stability of the structure and ensuring that the first bearing, the second bearing and the third bearing do not displace.

[0054] While the present disclosure has been disclosed in terms of implementations, it will be apparent to those having ordinary skill in the art that many variations and modifications are possible without departing from the scope of the present disclosure, as it is to be understood that the scope of the disclosure is to be accorded the broadest interpretation of the appended claims to encompass all equivalent technical or structural solutions.

Claims

1. An externally rotating micro generator structure, characterized in that, Include: One axis; A bearing bracket, fitted onto the shaft; and A bearing assembly, sleeved on the bearing bracket, and comprising: A first bearing; and The second bearing; The first bearing and the second bearing are respectively arranged on one side of the bearing bracket along one axial direction of the axis.

2. The externally rotating micro generator structure as described in claim 1, characterized in that, The bearing support comprises: The first ring section; and A limiting ring portion is connected to the first ring portion and is abutted by the first bearing.

3. The externally rotating micro generator structure as described in claim 2, characterized in that, The outer diameter of the limiting ring is larger than the outer diameter of the first ring.

4. The externally rotating micro generator structure as described in claim 2, characterized in that, The first bearing and the second bearing are arranged in a ring around the first ring portion.

5. The externally rotating micro generator structure as described in claim 1, characterized in that, The first bearing and the second bearing abut against each other.

6. The externally rotating micro generator structure as described in claim 2, characterized in that, The bearing bracket further includes a second ring portion, which is opposite to the first ring portion and connected to the limiting ring portion; The bearing assembly further includes a third bearing, which is sleeved on the second ring portion along the axial direction of the shaft.

7. The externally rotating micro generator structure as described in claim 6, characterized in that, The third bearing abuts against the limiting ring.

8. The externally rotating micro generator structure as described in claim 6, characterized in that, The outer diameter of the limiting ring is larger than the outer diameter of the second ring.

9. The externally rotating micro generator structure as described in claim 1, characterized in that, Also includes: A rivet seat is sleeved on the shaft and includes a protrusion that abuts against one end face of the second bearing and the bearing bracket.

10. The externally rotating micro generator structure as described in claim 1, characterized in that, Also includes: A bushing is fitted onto the bearing assembly and includes an inner annular surface, wherein there is a distance between the inner annular surface and the bearing support.

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