Bearing assembly, fan and electronic equipment

Abstract

The utility model provides a bearing assembly, a fan and electronic equipment. The bearing assembly comprises a shaft, a bearing and a detection piece. The detection piece is electrically connected with the bearing; wherein the shaft can make contact with the detection piece to form electric connection or form disconnection at intervals, so that a first circuit formed by the shaft, the detection piece and the bearing forms connection or disconnection, and the connection and disconnection conditions of the first circuit are used for the detection piece to determine the rotation state of the shaft.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a bearing assembly, a fan and an electronic device. Background Art

[0002] When the fan makes an abnormal noise, after-sales personnel will analyze the fan as a whole to determine the specific cause of the abnormal noise so as to carry out repairs and provide a basis for subsequent product improvements. In the whole machine analysis, it is necessary to determine whether the abnormal noise is caused by bearing wear.

[0003] Currently, before judging the bearing wear condition, the fan needs to be disassembled first, and then measured with the naked eye or measuring tools such as feeler gauges.

[0004] However, when implementing the invention, the inventors found that disassembling the fan is rather cumbersome, time-consuming and labor-intensive, resulting in low efficiency of the detection work. Utility Model Content

[0005] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0006] A first aspect of the present application provides a bearing assembly, comprising:

[0007] Shafts, bearings, and testing parts;

[0008] The detection element is electrically connected to the bearing;

[0009] The movement of the shaft can contact the detection part to form an electrical connection or to form an open circuit, so that the first circuit formed by the shaft, the detection part and the bearing forms a passage or an open circuit, and the passage and open circuit conditions of the first circuit are used by the detection part to determine the rotation state of the shaft.

[0010] In some modified implementations of the first aspect of the present application, the detection member includes a first detection portion and a first conductive portion, the first conductive portion is disposed on the bearing, the first detection portion is electrically connected to the first conductive portion, the first detection portion is electrically connected to the bearing, and the bearing is electrically connected to the shaft;

[0011] The movement of the shaft can contact the first conductive part to form an electrical connection or interval to form a circuit break, so that the second circuit formed by the shaft, the first detection part, the first conductive part and the bearing forms a passage or a circuit break, and the passage and circuit break conditions of the second circuit are used by the first detection part to determine the rotation state of the shaft.

[0012] In some embodiments, the first conductive portion is annular and is disposed inside the bearing;

[0013] When the shaft rotates stably, the first conductive part and the shaft are spaced apart to form an open circuit;

[0014] When the shaft shakes, the inner side of the first conductive portion can be in unstable contact with the shaft to form an unstable path.

[0015] In some embodiments, there are a plurality of the first conductive parts, and the plurality of the first conductive parts are arranged at intervals along a circumferential track on the inner side of the bearing;

[0016] When the shaft rotates stably, the first conductive part and the shaft are spaced apart to form an open circuit;

[0017] When the shaft shakes, at least one of the first conductive parts can be in unstable contact with the shaft to form an unstable path.

[0018] In some embodiments, an insulating member is disposed between the first conductive portion and the bearing.

[0019] In some embodiments, the detection member includes a second detection portion and a second conductive portion, the second detection portion is electrically connected to the second conductive portion, and the second detection portion is electrically connected to the bearing;

[0020] Among them, during the movement of the shaft, it can contact with the second conductive part and the bearing to form an electrical connection or be separated to form a circuit break, so that the third circuit formed by the shaft, the second detection part, the second conductive part and the bearing forms a passage or a circuit break, and the passage and circuit break conditions of the third circuit are used by the second detection part to determine the rotation state of the shaft.

[0021] In some embodiments, when the shaft rotates stably, the shaft maintains a gap with the second conductive part and the bearing to form an open circuit; when the shaft rotates unstably, the shaft maintains an unstably contact with the second conductive part and the bearing to form an unstable path.

[0022] In some embodiments, when the shaft and the detection member are in stable contact to form a path, the shaft is determined to be stably rotating; when the shaft and the detection member are in unstable contact to form an unstable path, the shaft is determined to be shaking; or,

[0023] When the shaft and the detection member can stably maintain a gap to form an open circuit, it is determined that the shaft is stably rotating; when the shaft and the detection member are in unstable contact to form an unstable path, it is determined that the shaft is shaking.

[0024] A second aspect of the present application provides a fan, comprising:

[0025] The fan body includes bearings and shaft;

[0026] A detection member, the detection member being electrically connected to the bearing;

[0027] The movement of the shaft can contact the detection part to form an electrical connection or to form a disconnection, so that the first circuit formed by the shaft, the detection part and the bearing forms a passage or a disconnection, and the passage and disconnection conditions of the first circuit are used by the detection part to determine the rotation state of the shaft.

[0028] A third aspect of the present application provides an electronic device, including:

[0029] The fan on the second side;

[0030] A monitoring module is connected to the detection element signal of the fan, and the monitoring module can determine whether the shaft of the fan is operating normally based on the determination result of the detection element. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0032] Figure 1 The structure diagram of a bearing assembly according to an embodiment of the present application is schematically shown;

[0033] Figure 2 Schematically shows Figure 1 sectional view of

[0034] Figure 3 A schematic structural diagram of a bearing assembly according to another embodiment of the present application is shown;

[0035] Figure 4 Schematically shows Figure 3 Cross-sectional view of .

[0036] Description of Figure Numbers:

[0037] 1. Shaft; 2. Bearing; 3. First conductive part; 4. Second conductive part. DETAILED DESCRIPTION

[0038] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0039] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0040] Example 1

[0041] like Figure 1 and Figure 4 As shown, embodiment 1 of the present application provides a bearing assembly, comprising:

[0042] Shaft 1, bearing 2, detection parts;

[0043] The detection member is electrically connected to the bearing 2;

[0044] Among them, the movement of shaft 1 can contact the detection part to form an electrical connection or interval to form a circuit break, so that the first circuit formed by shaft 1, detection part and bearing 2 forms a path or a circuit break. The path and circuit break conditions of the first circuit are used by the detection part to determine the rotation state of shaft 1.

[0045] Specifically, there is a certain gap between the shaft 1 and the bearing 2, so that the shaft 1 can rotate and drive the fan blades connected thereto to rotate. The bearing 2 can provide support for the shaft 1, ensuring that the shaft 1 can rotate at a desired position, while reducing the wear of the shaft 1.

[0046] The detection member is used to determine the rotation state of the shaft 1 according to the path and disconnection of the first circuit. The detection member can be electrically connected to the bearing 2 by welding, or the detection member can be attached to the bearing 2 by insulating tape to achieve electrical connection. In order to ensure the stability of the electrical connection between the detection member and the bearing 2, the detection member is preferably welded to the bearing 2. The bearing 2, the detection member or the shaft 1 needs to be connected to a power source so that the movement of the shaft 1 can contact the detection member to form an electrical connection, so that the first circuit forms a path; or the movement of the shaft 1 can be separated from the detection member to form a disconnection, so that the first circuit forms a disconnection.

[0047] There are three ways to judge the rotation state of shaft 1: one is that when shaft 1 and the detection part are continuously spaced apart so that the first circuit forms a continuous open circuit, the detection part determines that shaft 1 rotates stably; when shaft 1 and the detection part are intermittently in contact so that the first circuit forms an unstable path, the detection part determines that shaft 1 shakes; second, when shaft 1 and the detection part maintain contact so that the first circuit forms a continuous path, the detection part determines that shaft 1 rotates stably; when shaft 1 and the detection part are intermittently in contact so that the first circuit forms an unstable path, the detection part determines that shaft 1 shakes; third, when shaft 1 and the detection part are periodically in contact so that the first circuit forms a periodic path, the detection part determines that shaft 1 rotates stably; when shaft 1 and the detection part are intermittently in contact so that the first circuit forms a non-periodic path, the detection part determines that shaft 1 shakes.

[0048] The detection member includes a conductive part, and there are three ways to set the conductive part: one is that the conductive part is set on the bearing 2, and when the shaft 1 rotates stably, the shaft 1 and the conductive part are continuously spaced to form a continuous open circuit in the first circuit, and when the shaft 1 shakes, the shaft 1 and the conductive part are intermittently in contact to form an unstable path in the first circuit; or, when the shaft 1 shakes, the shaft 1, the conductive part and the bearing 2 are intermittently in contact to form an unstable path in the first circuit; the second is that the conductive part is set on the shaft 1, and when the shaft 1 rotates stably, the inner side of the bearing 2 is continuously spaced from the conductive part to form a continuous open circuit in the first circuit, and when the shaft 1 shakes, the shaft 1 and the conductive part are intermittently in contact to form an unstable path in the first circuit; the third is that there are two conductive parts, and the two conductive parts are respectively set on the bearing 2 and the shaft 1, and when the shaft 1 rotates stably, the two conductive parts are periodically in contact to form a periodic path in the first circuit, and when the shaft 1 shakes, the two conductive parts are intermittently in contact to form a non-periodic path in the first circuit.

[0049] The bearing assembly provided in the present application electrically connects the detection piece with the bearing 2. Since the shaft 1 moves and can contact the detection piece to form an electrical connection or interval to form a circuit break, the first circuit formed by the shaft 1, the detection piece and the bearing 2 forms a path or a circuit break. The path and circuit break conditions of the first circuit are then used by the detection piece to determine the rotation state of the shaft 1. The entire detection process does not require disassembly of the fan, which reduces the tediousness of the detection work and improves the efficiency of the detection work. In addition, it avoids inaccurate detection results caused by traditional naked eye observation or manual measurement, thereby improving the reliability of the detection.

[0050] like Figure 2 As shown, in some embodiments, the detection member includes a first detection portion (not shown in the figure) and a first conductive portion 3, the first conductive portion 3 is disposed on the bearing 2, the first detection portion is electrically connected to the first conductive portion 3, the first detection portion is electrically connected to the bearing 2, and the bearing 2 is electrically connected to the shaft 1;

[0051] Among them, the movement of shaft 1 can contact with the first conductive part 3 to form an electrical connection or interval to form a circuit break, so that the second circuit formed by shaft 1, first detection part, first conductive part 3 and bearing 2 forms a passage or a circuit break, and the passage and circuit break conditions of the second circuit are used by the first detection part to determine the rotation state of shaft 1.

[0052] Specifically, when the shaft 1 and the first conductive part 3 are continuously spaced apart so that the second circuit forms a continuous open circuit, the detection component determines that the shaft 1 rotates stably; when the shaft 1 and the first conductive part 3 are intermittently in contact so that the second circuit forms an unstable path, the detection component determines that the shaft 1 is shaking. The bearing 2 and the shaft 1 can be electrically connected through a wire, one end of the wire is connected to the first end face of the shaft 1, and the other end of the wire can be connected to the inner side of the bearing 2, the outer side of the bearing 2, or the first end face of the bearing 2 or the second end face of the middle bearing 2. In order to simplify the overall structure and avoid the wire being wound around the shaft 1 during the rotation of the shaft 1, which causes the connection between the wire and the shaft 1 to be disconnected, it is preferred that the other end of the wire is connected to the first end face of the bearing 2, wherein the first end face of the bearing 2 and the first end face of the shaft 1 are located on the same side of the shaft 1 along the length direction.

[0053] The first detection part can be connected to the first conductive part 3 through a wire. The first detection part can be selected according to actual needs, for example, it can be one or more of a multimeter, an ammeter, an ohmmeter, an indicator light, and a sound alarm device.

[0054] like Figure 2 As shown, in some embodiments, the first conductive part 3 is annular and is disposed inside the bearing 2; the shaft 1 passes through the inside of the first conductive part 3;

[0055] When the shaft 1 rotates stably, the first conductive part 3 and the shaft 1 are spaced apart to form an open circuit; at this time, the first detection part can determine that the shaft 1 rotates stably;

[0056] When the shaft 1 shakes, the inner side of the first conductive part 3 can be in unstable contact with the shaft 1 to form an unstable path. At this time, the first detection part can determine that the shaft 1 is rotating stably.

[0057] Specifically, the first conductive part 3 can be close to one end of the bearing 2, or it can be set in the middle of the bearing 2 along the axis 1. Since the shaking degree of the two ends of the shaft 1 is greater than the shaking degree of the middle part of the shaft 1 during the shaking of the shaft 1, in order to improve the detection sensitivity, the first conductive part 3 is preferably set at a position close to one end of the bearing 2.

[0058] Providing the first conductive part 3 in a ring shape is more conducive to the manufacture of the first conductive part 3 and facilitates the welding of the first conductive part 3 and the bearing 2 .

[0059] In order to avoid wearing out the first conductive part 3 when the shaft 1 shakes and thus affecting the final detection result, the first conductive part 3 may be made of a wear-resistant metal material, such as high-carbon chromium steel or stainless steel.

[0060] In order to save materials and reduce production costs, in some embodiments, there are multiple first conductive parts 3, and the multiple first conductive parts 3 are arranged at intervals along a circumferential track on the inner side of the bearing 2; the shaft 1 passes through the inner side of the circumferential track;

[0061] When the shaft 1 rotates stably, the first conductive part 3 and the shaft 1 are spaced apart to form an open circuit. At this time, the first detection part can determine that the shaft 1 rotates stably.

[0062] When the shaft 1 shakes, at least one first conductive part 3 can be in unstable contact with the shaft 1 to form an unstable path. At this time, the first detection part can determine that the shaft 1 rotates stably.

[0063] Specifically, the spacing distances between the multiple first conductive parts 3 can be equal or unequal. The shape of the first conductive part is not further limited, for example, it can be a rectangular parallelepiped, a cylindrical shape, or other irregular shapes. In order to ensure the stability of the connection between the first conductive part 3 and the inner side of the bearing 2, the first side surface of the first conductive part 3 is fitted with the inner side of a part of the bearing 2, and the first side surface of the first conductive part 3 is connected to the inner side of the bearing 2.

[0064] The number of the first conductive parts 3 is not further linear, as long as it is ensured that when the shaft 1 shakes, at least one first conductive part 3 can be in unstable contact with the shaft 1 to form an unstable path. For example, the first conductive parts can be two, three, four, five, six, seven, eight or even more.

[0065] In some embodiments, an insulating member (not shown in the figures) is disposed between the first conductive portion 3 and the bearing 2 .

[0066] Specifically, the first conductive part 3 and the bearing 2 are connected to the two poles of the power supply through wires. Since the first detection part is electrically connected to the first conductive part 3 and the bearing 2, that is, the first conductive part 3, the first detection part and the bearing 2 can form a first sub-circuit with a continuous path. When the shaft 1 rotates stably, the shaft 1 and the first conductive part 3 are continuously spaced apart, and the current of the first sub-circuit is stable at this time; when the shaft 1 shakes, the shaft 1 and the first conductive part 3 are intermittently in contact, so that the first conductive part 3, the shaft 1 and the bearing 2 form a second sub-circuit with an unstable path. Since the first sub-circuit and the second sub-circuit are parallel circuits, the current in the first sub-circuit is also unstable at this time, so the first detection part on the first sub-circuit can indicate the on-off status of the second sub-circuit. At this time, the first detection part can use an ammeter or a power meter.

[0067] like Figure 3 and Figure 4 As shown, in some embodiments, the detection member includes a second detection portion (not shown in the figure) and a second conductive portion 4, the second detection portion is electrically connected to the second conductive portion 4, and the second detection portion is electrically connected to the bearing 2;

[0068] Among them, during the movement of the shaft 1, it can contact the second conductive part 4 and the bearing 2 to form an electrical connection or be separated to form a circuit, so that the third circuit formed by the shaft 1, the second detection part, the second conductive part 4 and the bearing 2 forms a passage or a circuit break. The passage and circuit break conditions of the third circuit are used by the second detection part to determine the rotation state of the shaft 1.

[0069] Specifically, when the shaft 1 is continuously spaced from the second conductive part 4 and the bearing 2 respectively so that the third circuit forms a continuous open circuit, the detection component determines that the shaft 1 rotates stably; when the shaft 1 is intermittently in contact with the second conductive part 4 and the bearing 2 so that the third circuit forms an unstable path, the detection component determines that the shaft 1 is shaking. At this time, the second conductive part 4 can be annular, and the annular second conductive part 4 is arranged on the second end face of the bearing 2, and the inner ring of the second conductive part 4 coincides with the inner ring of the bearing 2 along the length direction of the shaft 1; or, there can be multiple second conductive parts 4, and multiple second conductive parts 4 are arranged at intervals along a circular trajectory on the second end face of the bearing 2, and the first side surface of the second conductive part 4 close to the axis 1 line is arc-shaped, so that the first side of the second conductive part 4 can coincide with the inner ring of the bearing 2 along the length direction of the shaft 1. Or,

[0070] When the shaft 1 is in continuous contact with the second conductive part 4 and the bearing 2 respectively so that the third circuit forms a continuous path, the detection part determines that the shaft 1 rotates stably; when the shaft 1 is in intermittent contact with the second conductive part 4 and the bearing 2 so that the third circuit forms an unstable path, the detection part determines that the shaft 1 is shaking. At this time, the second conductive part 4 can be two metal sheets or conductive, wherein a metal sheet with a certain strength is preferred. The two metal sheets are respectively arranged on the two end faces of the bearing 2. When the shaft 1 rotates stably, the edges of the two end faces of the shaft 1 can respectively maintain stable contact with the two metal sheets to form a continuous path. When the shaft 1 rotates unstably, the shaft 1 is in unstable contact with the two metal sheets to form an unstable path.

[0071] In some embodiments, the detection member includes a third detection portion and a third conductive portion, the third conductive portion is disposed on the shaft 1, the third conductive portion is electrically connected to the shaft 1, the third detection portion is electrically connected to the bearing 2, and the bearing 2 is electrically connected to the shaft 1;

[0072] Among them, the movement of shaft 1 can make the third detection part contact with the third conductive part to form an electrical connection or interval to form a circuit break, so that the fourth circuit formed by shaft 1, third detection part, third conductive part and bearing 2 forms a passage or a circuit break, and the passage and circuit break conditions of the fourth circuit are used by the detection part to determine the rotation state of shaft 1.

[0073] Specifically, when the third detection part and the third conductive part are continuously spaced to form a continuous open circuit in the fourth circuit, the detection part determines that the shaft 1 rotates stably; when the third conductive part and the third conductive part are intermittently in contact to form an unstable path in the fourth circuit, the detection part determines that the shaft 1 shakes.

[0074] Specifically, the third detection part is connected to the inner side of the bearing 2 through a wire, and the third conductive part can be annular, and the annular third conductive part is arranged on the circumference of the shaft 1. When the shaft 1 rotates stably, the third conductive part and the wire are kept apart to form an open circuit; when the shaft 1 shakes, the third conductive part and the third detection part are in unstable contact through the wire to form an unstable path; or,

[0075] There are multiple third conductive parts, and the multiple third conductive parts are arranged at intervals on the outside of the shaft 1 along a circular trajectory; when the shaft 1 rotates stably, the third conductive parts and the wires maintain a distance to form an open circuit; when the shaft 1 shakes, at least one third conductive part can form an unstable path by making unstable contact with the third detection part through the wire.

[0076] The bearing 2 and the shaft 1 can be electrically connected through a wire, or, because in some bearing 2 components, there is a gap between the bearing 2 and the shaft 1 when the shaft 1 rotates normally, the third detection part and the third conductive part are separated to form a continuous open circuit in the fourth circuit; when the shaft 1 shakes, the bearing 2 and the shaft 1 can contact each other, and the third detection part is in contact with the third conductive part at the same time to form an electrical connection, so that the shaft 1, the third detection part, the third conductive part and the bearing 2 form a fourth circuit with a passage. At this time, the bearing 2 and the shaft 1 do not need to be electrically connected through a wire, that is, the contact condition of the shaft 1, the bearing 2 and the third detection part affects the on-off condition of the fourth circuit.

[0077] In some embodiments, when the shaft 1 and the detection member can stably contact to form a path, the shaft 1 is determined to be stably rotating; when the shaft 1 and the detection member are unstably contacted to form an unstable path, the shaft 1 is determined to be shaking; or,

[0078] When the shaft 1 and the detection member can stably maintain a distance to form an open circuit, it is determined that the shaft 1 rotates stably; when the shaft 1 and the detection member are in unstable contact to form an unstable path, it is determined that the shaft 1 shakes.

[0079] Specifically, stable contact also includes periodic stable contact. At this time, the detection member includes a fourth detection part and two fourth conductive parts, one fourth conductive part is arranged on the inner side of the bearing 2, and the other fourth conductive part is arranged on the outer side of the shaft 1. One end of the fourth detection part is connected to the bearing 2, and the other end of the fourth detection part is connected to one of the fourth conductive parts. Each rotation of the shaft 1 can make the two fourth conductive parts contact and spaced, and the two fourth conductive parts form a path when in contact. Since the time for each rotation of the shaft 1 is equal, the two fourth conductive parts form periodic stable contact, and the shaft 1 is determined to rotate stably. Otherwise, the shaft 1 is determined to shake.

[0080] Example 2

[0081] Embodiment 2 of the present application provides a fan, including:

[0082] The fan body includes a bearing 2 and a shaft 1;

[0083] A detection member, the detection member is electrically connected to the bearing 2;

[0084] Among them, the movement of shaft 1 can contact the detection part to form an electrical connection or interval to form a circuit break, so that the first circuit formed by shaft 1, detection part and bearing 2 forms a path or a circuit break, and the path and circuit break conditions of the first circuit are used by the detection part to determine the rotation state of shaft 1.

[0085] Specifically, in order to facilitate the detection of the fan and reduce the cost of the fan, the detection component can select an indicator light or a sound alarm. In order to reduce noise and improve the user experience, the detection component preferably has an indicator light. The indicator light is set on the casing of the fan. When the first circuit is connected, the indicator light lights up. When the first circuit is broken, the indicator light goes out. The rotation state of shaft 1 is determined by the on and off of the indicator light.

[0086] Example 3

[0087] Embodiment 3 of the present application provides an electronic device, including:

[0088] The fan of embodiment 2,

[0089] The monitoring module is connected to the detection element signal of the fan, and the monitoring module can determine whether the shaft of the fan is operating normally based on the determination result of the detection element.

[0090] Specifically, the monitoring module can determine whether the abnormal sound of the electronic device is caused by the shaking of the fan shaft 1, providing more reliable technical support for the determination of the abnormal sound of the electronic device.

[0091] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A bearing assembly, characterized in that: include: Shafts, bearings, and testing parts; The detection element is electrically connected to the bearing; The movement of the shaft can contact the detection part to form an electrical connection or to form a disconnection, so that the first circuit formed by the shaft, the detection part and the bearing forms a passage or a disconnection, and the passage and disconnection conditions of the first circuit are used by the detection part to determine the rotation state of the shaft.

2. The bearing assembly according to claim 1, characterized in that: The detection member includes a first detection part and a first conductive part, the first conductive part is arranged on the bearing, the first detection part is electrically connected to the first conductive part, the first detection part is electrically connected to the bearing, and the bearing is electrically connected to the shaft; The movement of the shaft can contact the first conductive part to form an electrical connection or interval to form a circuit break, so that the second circuit formed by the shaft, the first detection part, the first conductive part and the bearing forms a passage or a circuit break, and the passage and circuit break conditions of the second circuit are used by the first detection part to determine the rotation state of the shaft.

3. The bearing assembly according to claim 2, characterized in that: The first conductive part is annular and is arranged inside the bearing; When the shaft rotates stably, the first conductive part and the shaft are spaced apart to form an open circuit; When the shaft shakes, the inner side of the first conductive portion can be in unstable contact with the shaft to form an unstable path.

4. The bearing assembly according to claim 2, characterized in that: There are a plurality of the first conductive parts, and the plurality of the first conductive parts are arranged at intervals along a circumferential track on the inner side of the bearing; When the shaft rotates stably, the first conductive part and the shaft are spaced apart to form an open circuit; When the shaft shakes, at least one of the first conductive parts can be in unstable contact with the shaft to form an unstable path.

5. The bearing assembly according to claim 2, characterized in that: An insulating member is provided between the first conductive portion and the bearing.

6. The bearing assembly according to claim 1, characterized in that The detection member comprises a second detection portion and a second conductive portion, the second detection portion is electrically connected to the second conductive portion, and the second detection portion is electrically connected to the bearing; Among them, during the movement of the shaft, it can contact with the second conductive part and the bearing to form an electrical connection or be separated to form a circuit break, so that the third circuit formed by the shaft, the second detection part, the second conductive part and the bearing forms a passage or a circuit break, and the passage and circuit break conditions of the third circuit are used by the second detection part to determine the rotation state of the shaft.

7. The bearing assembly according to claim 6, characterized in that When the shaft rotates stably, the shaft maintains a distance from the second conductive part and the bearing to form an open circuit; when the shaft rotates unstably, the shaft is in unstably contact with the second conductive part and the bearing to form an unstable path.

8. The bearing assembly according to claim 1, characterized in that In the case where the shaft and the detection member are in stable contact to form a path, it is determined that the shaft is stably rotating; in the case where the shaft and the detection member are in unstable contact to form an unstable path, it is determined that the shaft is shaking; or When the shaft and the detection member can stably maintain a gap to form an open circuit, it is determined that the shaft is stably rotating; when the shaft and the detection member are in unstable contact to form an unstable path, it is determined that the shaft is shaking.

9. A fan, characterized in that: include: The fan body includes bearings and shaft; A detection member, the detection member being electrically connected to the bearing; The movement of the shaft can contact the detection part to form an electrical connection or to form a disconnection, so that the first circuit formed by the shaft, the detection part and the bearing forms a passage or a disconnection, and the passage and disconnection conditions of the first circuit are used by the detection part to determine the rotation state of the shaft.

10. An electronic device, characterized in that: include: The fan according to claim 9, A monitoring module is connected to the detection element signal of the fan, and the monitoring module can determine whether the shaft of the fan is operating normally based on the determination result of the detection element.

Images