Conductive device, motor, power assembly and vehicle

Abstract

The utility model discloses a conductive device, a motor, a power assembly and a vehicle. The conductive device comprises a fixed part, a movable part and an electric contact structure; the moving part can move in the first direction relative to the fixed part. And the electric contact structure is movably arranged on the fixed part and / or the movable part, and the electric contact structure can move in the second direction to electrically contact the electrified part when the movable part moves in the first direction. Therefore, under the condition that the electric contact structure is in the unfolded state, the electric contact structure is used for abutting against the electrified part, and at least one of the movable part and the fixed part is used for being connected with a shell of the motor, so that current flowing through the electrified part is transmitted to the shell through the conductive device, and current flowing through the bearing from the electrified part is reduced; and the electric corrosion of the bearing can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a conductive device and a motor. Background Art

[0002] The existing motor includes a housing and a rotating shaft. The outer diameter of the conductive device matches the diameter of the inner hole of the rotating shaft so as to be able to abut against the inner hole wall of the rotating shaft. In this way, the current flowing through the rotating shaft is transmitted to the housing via the conductive device.

[0003] The current motors have many specifications. The diameter of the inner hole of the motor shaft also has many specifications. However, the outer diameter of the existing conductive device is fixed. Thus, one conductive device can only be applied to one motor.

[0004] To this end, the utility model provides a conductive device and a motor to at least partially solve the above problems. Utility Model Content

[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the specific embodiments section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0006] In order to at least partially solve the above technical problems, the utility model provides a conductive device, the conductive device comprising:

[0007] Fixings;

[0008] A moving member, the moving member can move along a first direction relative to the fixed member;

[0009] The electrical contact structure is movably arranged on the fixed part and / or the movable part. When the movable part moves along the first direction, the electrical contact structure can move in the second direction to electrically contact the charged part. The first direction and the second direction form an angle.

[0010] According to the conductive device of the utility model, when the electric contact structure is in an expanded state, the electric contact structure is used to abut the charged part, and at least one of the movable part and the fixed part is used to connect the housing of the motor, so that the current flowing through the charged part is transmitted to the housing through the conductive device, thereby reducing the current flowing through the bearing from the charged part, thereby reducing the electrical corrosion of the bearing; in addition, the arrangement of the movable part, the fixed part and the electric contact structure can adjust the outer diameter of the electric contact structure, thereby being suitable for charged parts with different inner diameters. When the electric contact structure is worn, the outer diameter of the electric contact structure can also be adjusted so that the electric contact structure can continue to contact the charged part.

[0011] Optionally, the electrical contact structure includes a connecting portion and an electrical contact portion, the connecting portion is rotatably disposed on a fixed portion and / or a movable portion, the electrical contact portion is disposed on the connecting portion and is used to electrically contact a live portion, and the connecting portion can rotate and drive the electrical contact structure to move in the second direction to electrically contact the live portion when the movable portion moves along the first direction.

[0012] Optionally, the connecting portion includes:

[0013] A supporting rib, wherein a first end of the supporting rib is pivotally connected to the fixing member;

[0014] Umbrella rib assembly, the umbrella rib assembly includes:

[0015] A first rib member, a first end of the first rib member being connected to the electrical contact portion, and the first rib member being pivotally connected to the supporting rib;

[0016] A second rib member, a first end of the second rib member being pivotally connected to a second end of the first rib member;

[0017] A third umbrella rib member, wherein a first end of the third umbrella rib member is pivotally connected to the moving member, a second end of the third umbrella rib member is pivotally connected to the supporting umbrella rib, and the third umbrella rib member is also pivotally connected to the second end of the second umbrella rib member.

[0018] Optionally, the fixing part includes an umbrella disc portion and a fixing part, the umbrella disc portion is connected to the fixing part, the fixing part is used to be connected to a grounded shell, the umbrella disc portion and the fixing part are both circumferentially closed annular structures, the movable part is movably arranged in the fixing part and the umbrella disc portion along a first direction, and the umbrella disc portion is pivotally connected to the connecting part.

[0019] Optionally, the fixing portion is used to pass through a grounded housing, and the fixing portion has an external thread, and the external thread is used to be threadedly connected to the housing.

[0020] Optionally, the fixing member further comprises a rod portion, one end of the rod portion is connected to the fixing portion, and the other end of the rod portion is connected to the umbrella disc portion.

[0021] Optionally, there are multiple rod portions, and the multiple rod portions are arranged at intervals around the moving member in the circumferential direction.

[0022] Optionally, the conductive device further includes a sealing member, which is disposed between the fixed portion and the movable portion.

[0023] Optionally, the electrical contact structure has a retracted state, and when the electrical contact structure is in the retracted state, an outer diameter of the electrical contact structure is smaller than an outer diameter of the fixing portion.

[0024] Optionally, the electrical contact is configured as an electrically conductive fiber piece.

[0025] Optionally, the electrical contact structure further includes a cylindrical portion, and the electrical contact portion and the connecting portion extend into the cylindrical portion.

[0026] Optionally, there are multiple supporting ribs, and the multiple supporting ribs are arranged at intervals around the moving part in the circumferential direction;

[0027] There are multiple umbrella rib assemblies, and the multiple umbrella rib assemblies correspond one-to-one to the multiple supporting umbrella ribs.

[0028] The utility model also provides a motor, which comprises the above-mentioned conductive device.

[0029] According to the motor of the utility model, the motor includes the aforementioned conductive device, and when the electric contact structure is in an expanded state, the electric contact structure is used to abut the live part, and at least one of the movable part and the fixed part is used to connect the housing of the motor, so that the current flowing through the live part is transmitted to the housing through the conductive device, thereby reducing the current flowing through the bearing from the live part, thereby reducing the electrical corrosion of the bearing; in addition, the arrangement of the movable part, the fixed part and the electric contact structure can adjust the outer diameter of the electric contact structure, thereby being suitable for live parts with different inner diameters. When the electric contact structure is worn, the outer diameter of the electric contact structure can also be adjusted so that the electric contact structure can continue to contact the live part.

[0030] The utility model also provides a power assembly, which includes the above-mentioned motor.

[0031] According to the powertrain of the utility model, the powertrain includes the aforementioned motor, and the motor includes the aforementioned conductive device. When the electric contact structure is in an expanded state, the electric contact structure is used to abut the live part, and at least one of the moving part and the fixed part is used to connect the housing of the motor, so that the current flowing through the live part is transmitted to the housing through the conductive device, reducing the current flowing through the bearing from the live part, thereby reducing the electrical corrosion of the bearing; in addition, the arrangement of the moving part, the fixed part and the electric contact structure can adjust the outer diameter of the electric contact structure, thereby being suitable for live parts with different inner diameters. When the electric contact structure is worn, the outer diameter of the electric contact structure can also be adjusted so that the electric contact structure can continue to contact the live part.

[0032] The utility model also provides a vehicle, which comprises the above-mentioned power assembly.

[0033] According to the vehicle of the utility model, the vehicle includes the aforementioned powertrain, the powertrain includes the aforementioned motor, the motor includes the aforementioned conductive device, when the electric contact structure is in an expanded state, the electric contact structure is used to abut the live part, at least one of the moving part and the fixed part is used to connect the motor housing, so that the current flowing through the live part is transmitted to the housing through the conductive device, reducing the current flowing through the bearing from the live part, thereby reducing the electrical corrosion of the bearing; in addition, the arrangement of the moving part, the fixed part and the electric contact structure can adjust the outer diameter of the electric contact structure, thereby being suitable for live parts with different inner diameters, and when the electric contact structure is worn, the outer diameter of the electric contact structure can also be adjusted so that the electric contact structure can continue to contact the live part. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to make the advantages of the utility model more easily understood, the utility model briefly described above will be described in more detail by referring to the specific embodiments shown in the accompanying drawings. It can be understood that these drawings only depict typical embodiments of the utility model and should not be considered as limiting the scope of protection thereof. The utility model is described and explained with additional characteristics and details through the accompanying drawings.

[0035] Figure 1 It is a cross-sectional schematic diagram of a conductive device arranged on a motor according to a preferred embodiment of the utility model;

[0036] Figure 2 for Figure 1 The conductive device is arranged at A of the motor, which is a partial enlarged schematic diagram;

[0037] Figure 3 for Figure 1 A three-dimensional schematic diagram of the electrical contact portion of the conductive device, the connecting member and the first umbrella rib member connected together; and

[0038] Figure 4 for Figure 1 A schematic cross-sectional view of a stereoscopic diagram of the electrical contact portion of the conductive device, the connecting member and the first umbrella rib member being connected together.

[0039] Description of Reference Numerals

[0040] 110: moving part 120: fixed part

[0041] 121: Umbrella plate 122: Fixing part

[0042] 123: Rod 130: Connecting part

[0043] 131: Support ribs 140: Umbrella rib assembly

[0044] 142: Electrical contact part 143: Connecting piece

[0045] 144: first umbrella rib 145: second umbrella rib

[0046] 146: third rib 147: tubular portion

[0047] 148: Extension part 150: Rotating shaft

[0048] 151: Inner hole wall 160: Outer shell

[0049] 161: threaded hole 170: seal

[0050] 180: Nut 190: First bearing

[0051] 191: Second bearing 192: Third bearing

[0052] 193: Motor shaft 194: Motor stator

[0053] 195: Motor rotor 200: Electrical contact structure

[0054] 201: Curved structure 202: Flat structure DETAILED DESCRIPTION

[0055] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, some technical features known in the art are not described to avoid confusion with the present invention.

[0056] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower" and similar expressions used herein are only for the purpose of illustration and are not intended to be limiting.

[0057] In this document, ordinal numbers such as “first” and “second” cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order.

[0058] In order to thoroughly understand the implementation of the utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the utility model is described in detail below, but in addition to these detailed descriptions, the utility model can also have other implementations.

[0059] The utility model provides a conductive device. The conductive device can be used for a motor. The conductive device contacts the rotating shaft 150 of the charged motor and the grounded housing 160, so that the current flows through the rotating shaft 150, the conductive device and the housing 160 in sequence, and the current flowing through the bearing connecting the housing 160 and the rotating shaft 150 is reduced, thereby reducing the electrical corrosion of the bearing.

[0060] It is understood that in an embodiment not shown, the conductive device can also be used for a powered rotating shaft, for example, a main shaft of a reducer connected to a motor shaft.

[0061] Please refer to Figure 1 and Figure 2 , the conductive device includes a moving member 110. The moving member 110 may be a rod-shaped structure. The axial direction of the moving member 110 is a first direction D1. The axial direction of the moving member 110 is parallel to the axial direction of the rotating shaft 150. For example, the moving member 110 and the rotating shaft 150 are coaxially arranged. The moving member 110 is a conductive member made of a conductive material, such as a metal member.

[0062] It should be noted that this article takes the example of the conductive device being arranged on the motor for explanation.

[0063] The conductive device further includes a fixing member 120. The fixing member 120 is a conductive member made of a conductive material, such as a metal member. The fixing member 120 is disposed on the movable member 110. For example, the fixing member 120 is sleeved on the outer periphery of the movable member 110. Along the axial direction of the movable member 110, the fixing member 120 can move relative to the movable member 110.

[0064] It is understood that in an embodiment not shown, the fixing member 120 may be connected to the moving member 110. The fixing member 120 can move relative to the moving member 110 along the axial direction of the moving member 110. For example, the moving member 110 is provided with a mounting groove extending along the axial direction of the moving member 110. The fixing member 120 can be arranged in the mounting groove. The fixing member can move along the extension direction of the mounting groove.

[0065] like Figure 2 As shown, the conductive device also includes an electrical contact structure 200. The rotating shaft 150 may have an inner hole, and the electrical contact structure 200 is arranged in the inner hole. It can be understood that in an embodiment not shown, the electrical contact structure 200 may also be arranged on the radial outside of the rotating shaft 150 and electrically contact the radial outer wall of the rotating shaft 150. The electrical contact structure 200 is a conductive member made of conductive material. The electrical contact structure 200 is arranged on a fixed member and a movable member. The electrical contact structure 200 can move in a second direction D2 to electrically contact the rotating shaft 150 as a live component. The first direction D1 and the second direction D2 intersect, for example, are perpendicular, i.e., the radial direction of the movable member 110.

[0066] In this way, when the moving member 110 moves along the first direction D1, the electric contact structure 200 moves in the second direction D2 and electrically contacts the charged part. Among them, since the electric contact structure 200 needs to move in the second direction D2 to be able to electrically contact the charged part, when the charged part and the electric contact structure 200 are worn, the electric contact structure 200 needs to move in the second direction D2 so that the electric contact structure 200 always electrically contacts the charged part; and the second direction D2 is different from the first direction D1, and it is often difficult to directly drive the electric contact structure 200 to move in the second direction D2. Therefore, this solution is to drive the electric contact structure 200 to move in the second direction D2 by setting the movable and controllable moving member 110 in the first direction D1, so that the electric contact structure 200 can always electrically contact the charged part.

[0067] Specifically, when the electrical contact structure 200 is disposed inside the motor and electrically contacts the inner hole wall of the inner hole of the rotating shaft 150 or the radial outer wall of the rotating shaft 150, the electrical contact structure 200 needs to move in the radial direction of the rotating shaft 150 to electrically contact the rotating shaft 150; moving the moving member 110 along the axial direction of the moving member 110 can drive the electrical contact structure 200 to rotate, so that the electrical contact structure 200 moves in the second direction D2, and then the electrical contact structure 200 is unfolded or retracted. In this way, the electrical contact structure 200 has an unfolded state and a retracted state. When the electrical contact structure 200 is in the unfolded state, the electrical contact structure 200 is unfolded. When the electrical contact structure 200 is in the retracted state, the electrical contact structure 200 is retracted. The outer diameter of the electrical contact structure 200 in the unfolded state (that is, the outer diameter of the electrical contact portion 142 described later) is greater than the outer diameter of the electrical contact structure 200 in the retracted state. Compared with the radial movement of the electrical contact structure 200 inside the motor, the axial movement of the moving part 110 along the rotating shaft 150 is obviously more controllable. Therefore, this embodiment controls the axial movement of the moving part 110 on the rotating shaft 150 so that the electrical contact structure 200 can move in the radial direction of the rotating shaft 150, so that the electrical contact structure 200 can always electrically contact the rotating shaft 150.

[0068] It should be noted that the movement of the electrical contact structure 200 in the second direction D2 does not mean that the electrical contact structure 200 moves completely along the second direction D2, but means that the displacement of the electrical contact structure 200 can be decomposed into a partial displacement in the second direction D2; for example, when the second direction is a vertical direction, the electrical contact structure 200 can move in an oblique upward direction, and the oblique upward direction can be decomposed into a vertical direction movement.

[0069] When the electric contact structure 200 is in the unfolded state, the electric contact structure 200 is used to abut against the inner hole wall 151 (an example of a live part) of the inner hole of the motor, thereby electrically contacting the rotating shaft 150. At least one of the moving part 110 and the fixed part 120 is used to connect the housing 160 of the motor. The resistance of the conductive device is less than the resistance of the bearing. In this way, the current flowing through the rotating shaft 150 is preferentially transmitted to the housing 160 through the conductive device, reducing the current flowing from the rotating shaft 150 through the bearing, thereby reducing the electrical corrosion of the bearing.

[0070] In addition, the outer diameter of the electrical contact structure 200 can be adjusted by adjusting the position of the moving member 110. In this way, the conductive device can be applied to the rotating shaft 150 with different inner diameters. Moreover, after the conductive device is used for a certain period of time and the electrical contact portion 142 described later is worn, the outer diameter of the electrical contact structure 200 can be adjusted by adjusting the position of the moving member 110, so that the electrical contact structure 200 can continue to contact the inner hole wall 151 of the rotating shaft 150.

[0071] In the present embodiment, when the electric contact structure 200 is in the expanded state, the electric contact structure 200 is used to abut against the inner hole wall 151 of the rotating shaft 150 of the motor, and at least one of the moving part 110 and the fixed part 120 is used to connect to the outer shell 160 of the motor, so that the current flowing through the rotating shaft 150 is transmitted to the outer shell 160 through the conductive device, thereby reducing the current flowing through the rotating shaft 150 through the bearing, thereby reducing the electrical corrosion of the bearing; in addition, the arrangement of the moving part 110, the fixed part 120 and the electric contact structure 200 can adjust the outer diameter of the electric contact structure 200, thereby being suitable for rotating shafts 150 with different inner diameters. When the electric contact structure 200 is worn, the outer diameter of the electric contact structure 200 can also be adjusted so that the electric contact structure 200 can continue to contact the inner hole wall 151 of the rotating shaft 150.

[0072] Optionally, the electrical contact structure 200 includes a connecting portion 130. The connecting portion 130 is disposed in the inner hole. The connecting portion 130 is a conductive member made of a conductive material. The connecting portion 130 is mounted on the fixed member and the movable member. The connecting portion 130 can move in the second direction D2.

[0073] Thus, moving the moving member 110 along the axial direction of the moving member 110 can drive the connecting portion 130 to rotate, so that the connecting portion 130 moves in the second direction D2, thereby switching the electrical contact structure 200 between the deployed state and the retracted state.

[0074] like Figure 2 As shown, the electrical contact structure 200 further includes an electrical contact portion 142. The electrical contact portion 142 may be a conductive member made of a conductive material. The electrical contact portion 142 is disposed on the connecting portion 130. In this way, the connecting portion 130 can drive the electrical contact portion 142 to move.

[0075] That is, when the moving member 110 moves along the first direction D1 , the connecting portion 130 can rotate and drive the electrical contact portion 142 to move in the second direction D2 to electrically contact the charged part.

[0076] When the electrical contact structure 200 is in the expanded state, the electrical contact portion 142 is used to abut against the inner hole wall 151 of the inner hole of the motor, thereby electrically contacting the rotating shaft 150. Therefore, when the electrical contact portion 142 is worn, the electrical contact structure 200 can be continuously used by replacing a new electrical contact portion 142.

[0077] Preferably, the connecting portion 130 includes a supporting rib 131 and a rib assembly 140. A first end of the supporting rib 131 is pivotally connected to the fixing member 120. One end of the rib assembly 140 is pivotally connected to one end of the moving member 110. The rib assembly 140 is pivotally connected to a second end of the supporting rib 131. The pivot positions of the rib assembly 140 and the supporting rib 131 are located between the two ends of the rib assembly 140. The electrical contact portion 142 is provided on the rib assembly 140.

[0078] Thus, moving the moving member 110 along the axial direction of the moving member 110 can drive the supporting ribs 131 to move, thereby rotating the rib assembly 140 and further driving the electrical contact structure 200 to move between the unfolded state and the retracted state.

[0079] Specifically, the rib assembly 140 includes a first rib member 144, a second rib member 145, and a third rib member 146. The first end of the first rib member 144 is connected to the electrical contact portion 142 via a connecting member 143. The first rib member 144 is pivotally connected to the second end of the supporting rib 131. The pivot position of the first rib member 144 and the supporting rib 131 is located between the two ends of the first rib member 144.

[0080] The first end of the second rib member 145 is pivotally connected to the second end of the first rib member 144 away from the electrical contact portion 142. The first end of the third rib member 146 is pivotally connected to the moving member 110. The second end of the third rib member 146 is pivotally connected to the supporting rib 131. The second end of the third rib member 146 is located between the two ends of the supporting rib 131. The third rib member 146 is also pivotally connected to the second end of the second rib member 145. The second end of the second rib member 145 is located between the two ends of the third rib member 146. As a result, the strength of the rib assembly 140 is large.

[0081] It can be understood that in an embodiment not shown, the electrical contact structure is movably arranged on the fixing member. Specifically, the connecting portion is installed on the fixing member. At this time, one end of the moving member located in the rotating shaft has an annular flange. The annular flange extends outwardly and protrudes along the radial direction of the moving member. The connecting portion only includes the supporting rib. One end of the supporting rib is pivotally connected to the fixing member. The electrical contact portion is arranged at the free end of the supporting rib. The length direction of the supporting rib is inclined to the first direction D1. The first end of the supporting rib is further away from the nut member relative to the second section. The supporting rib abuts against the outer periphery of the annular flange (for example, the supporting rib abuts against the outer periphery of the annular flange by an elastic member). In this way, the outer periphery of the annular flange abuts against the portion between the two ends of the supporting rib. In this way, when the moving member is moved along the first direction D1, under the action of the annular flange on the supporting rib, the supporting rib can be turned over, thereby moving the connecting portion between the unfolded position and the retracted position.

[0082] It can be understood that in another embodiment not shown, the electrical contact structure is movably arranged on the moving member. Specifically, the connecting portion is installed on the moving member. At this time, the fixing member has an annular flange. The annular flange extends outwardly in the radial direction of the fixing member and protrudes. The connecting portion only includes the first umbrella rib member described later. One end of the first umbrella rib member is pivotally connected to the moving member. The electrical contact portion is arranged at the free end of the first umbrella rib member. The length direction of the first umbrella rib member is inclined to the first direction D1. The first end (automatic end) of the first umbrella rib member is closer to the nut member relative to the second end. The first umbrella rib member abuts against the outer periphery of the annular flange (for example, the first umbrella rib member abuts against the outer periphery of the annular flange through an elastic member). In this way, the outer periphery of the annular flange abuts against the portion between the two ends of the first umbrella rib member. In this way, when the moving member is moved along the first direction D1, under the action of the annular flange on the first umbrella rib member, the first umbrella rib member can be turned over, thereby moving the connecting portion between the unfolded position and the retracted position.

[0083] Preferably, if Figure 2 As shown, the fixing member 120 includes a disk portion 121 and a fixing portion 122. The disk portion 121 and the fixing portion 122 are both circumferentially closed annular structures. The disk portion 121 is connected to the fixing portion 122. The fixing portion 122 is used to be inserted into the outer shell 160. The fixing portion 122 is used to be connected to the outer shell 160. The moving member 110 is movably inserted into the fixing portion 122 along the axial direction of the moving member 110. The disk portion 121 is pivotally connected to the supporting ribs 131. The moving member 110 is movably inserted into the disk portion 121 along the axial direction of the moving member 110. As a result, the fixing member 120 has a simple structure and high strength. The outer shell 160 is grounded.

[0084] Further, the fixing portion 122 has an external thread. The housing 160 has a threaded hole 161. The fixing portion 122 is threadedly connected to the threaded hole 161. Thus, it is convenient to connect the fixing member 120 to the housing 160.

[0085] Preferably, the fixing member 120 further includes a rod portion 123. One end of the rod portion 123 is connected to the fixing portion 122. The other end of the rod portion 123 is connected to the umbrella plate portion 121. Thus, the arrangement of the rod portion 123 reduces the weight of the fixing member 120, relative to the structure of the fixing member 120 connecting the umbrella plate portion 121 and the fixing portion 122 being a circumferentially closed annular structure.

[0086] Furthermore, there are multiple (for example, 6) rods 123. The multiple rods 123 are arranged at intervals in the circumferential direction around the axis of the moving member 110. Thus, the connection between the fixing portion 122 and the umbrella disc portion 121 is firm.

[0087] Preferably, please continue to refer to Figure 2 The conductive device further includes a sealing member 170. The sealing member 170 is a hole sealing member. The sealing member 170 is disposed between the fixed portion 122 and the moving member 110 to seal the gap between the fixed portion 122 and the moving member 110.

[0088] Preferably, please refer to Figure 2 When the electrical contact structure 200 is in the retracted state, the outer diameter of the electrical contact structure 200 is smaller than the outer diameter of the fixing portion 122. Therefore, when it is necessary to disassemble and replace the conductive device, the electrical contact structure 200 is in the retracted state, and the fixing portion 122 is screwed out to pull out the conductive device without removing the housing 160, which facilitates the replacement of the conductive device.

[0089] Preferably, if Figure 2 As shown, the conductive device also includes a nut member 180. The moving member 110 has an external thread. The nut member 180 is arranged outside the housing 160. The other end of the moving member 110 extends outside the housing 160. The other end of the moving member 110 is threadedly connected to the nut member 180. Thus, by twisting the nut member 180, the moving member 110 can be moved along the axial direction of the moving member 110, thereby adjusting the position of the moving member 110 along the axial direction of the moving member 110, and then the electrical contact structure 200 is moved between the retracted state and the deployed state.

[0090] Optionally, the electrical contact part 142 may be a conductive fiber part. For example, the electrical contact part 142 is a carbon fiber part. Thus, the electrical contact part 142 has strong wear resistance and a long service life of the conductive device.

[0091] Furthermore, if Figures 2 to 4As shown, the electrical contact structure 200 further includes a connector 143. The connector 143 includes a cylindrical portion 147 and an extended portion 148. The extended portion 148 is connected to the cylindrical portion 147. The axial direction of the extended portion 148 and the cylindrical portion 147 are parallel.

[0092] Specifically, the edge extension portion 148 includes an arc structure 201 and a flat plate structure 202. The arc structure 201 and the cylindrical portion 147 are coaxially arranged. The arc structure 201 is connected to the cylindrical portion 147. The plane where the flat plate structure 202 is located is parallel to the axial direction of the cylindrical portion 147.

[0093] The electrical contact portion 142 extends into one end of the cylindrical portion 147. The first rib member 144 described later extends into the other end of the cylindrical portion 147. The edge extension portion 148 is located at the outer peripheral side of the electrical contact portion 142. At this time, the flat plate structure 202 can be bent and deformed toward the arc structure 201 to compress the outer peripheral surface of the electrical contact portion 142. Thus, the installation of the electrical contact portion 142 is facilitated.

[0094] Please continue to refer to Figure 2 There are multiple (e.g., 8) supporting ribs 131. The multiple supporting ribs 131 are arranged at intervals in the circumferential direction around the axis of the moving member 110. Thus, the strength of the connecting portion 130 is large.

[0095] There are multiple (e.g., 8) umbrella rib assemblies 140. The multiple umbrella rib assemblies 140 correspond to the multiple supporting umbrella ribs 131 one by one. The multiple umbrella rib assemblies 140 are arranged circumferentially at intervals around the axis of the moving member 110. As a result, the strength of the connecting portion 130 is large. In addition, the multiple umbrella rib assemblies 140 are circumferentially spaced to contact the inner hole wall 151 of the rotating shaft 150 through the electrical contact portion 142, increasing the contact area between the electrical contact portion 142 and the inner hole wall 151, and can conduct electricity more effectively.

[0096] The rib assembly 140 is used to contact the electrical contact portion 142 with the inner hole wall 151. Since the inner diameter of the rotating shaft 150 is relatively small, the linear speed of the inner hole wall 151 of the rotating shaft 150 is relatively small, which can reduce the wear on the electrical contact portion 142 and improve the wear resistance of the electrical contact portion 142.

[0097] Preferably, at least two marking portions (not shown) are provided on the outer peripheral surface of the moving member 110. At least two marking portions are arranged in sequence along the axial direction of the moving member 110. Each marking portion corresponds to a different outer diameter of the electrical contact structure 200. When the marking portion is located at the outer end surface of the housing 160, the outer diameter of the current electrical contact structure 200 is the outer diameter corresponding to the current marking portion.

[0098] Specifically, the marking portion includes a first marking portion and a second marking portion. The first marking portion corresponds to the first outer diameter of the electrical contact structure 200. The second marking portion corresponds to the second outer diameter of the electrical contact structure 200. The first outer diameter is smaller than the second outer diameter. When the first marking portion is located at the outer end surface of the housing 160, the outer diameter of the current electrical contact structure 200 is the first outer diameter. When the second marking portion is located at the outer end surface of the housing 160, the outer diameter of the current electrical contact structure 200 is the second outer diameter.

[0099] In this way, the corresponding marking portion can be selected according to the diameter of the inner hole of the rotating shaft 150. At this time, the diameter of the inner hole of the rotating shaft 150 corresponds to the marking portion one by one. The diameter of the inner hole of the rotating shaft 150 corresponds to the outer diameter of the electrical contact structure 200 one by one. The electrical contact portion 142 can abut against the inner hole wall 151 of the rotating shaft 150, and the diameter of the inner hole of the rotating shaft 150 corresponds to the outer diameter of the current electrical contact structure 200. Therefore, the marking portion corresponding to the diameter of the inner hole of the current rotating shaft 150 is located at the outer end surface of the housing 160, so that the electrical contact portion 142 can abut against the inner hole wall 151 of the rotating shaft 150, which is convenient for installation.

[0100] In addition, different marking parts can correspond to different use time periods. For example, the use time period includes a first use time period and a second use time period. The first marking part corresponds to the first use time period.

[0101] The second marking portion corresponds to the second use time period. The first use time period is adjacent to the second use time period.

[0102] The first marking portion and the second marking portion are adjacent to each other. The first use time period is before the second use time period.

[0103] After the conductive device currently installed on the rotating shaft 150 is used for the first use period (at this time, the first marking portion is located at the outer end surface of the housing 160 so that the electrical contact portion 142 abuts against the inner hole wall 151 of the rotating shaft 150), the electrical contact portion 142 is worn and leaves the inner hole wall 151 of the rotating shaft 150. At this time, the electrical connection between the electrical contact portion 142 and the rotating shaft 150 is disconnected. At this time, the nut member 180 can be adjusted to move the moving member 110, thereby moving the second marking portion to the outer end surface of the housing 160, thereby adjusting the outer diameter of the electrical contact structure 200, thereby causing the electrical contact portion 142 to abut against the inner hole wall 151 of the rotating shaft 150.

[0104] The utility model also provides a motor, which comprises the above-mentioned conductive device.

[0105] In this embodiment, the motor includes the aforementioned conductive device. When the electrical contact structure 200 is in the expanded state, the electrical contact structure 200 is used to abut against the inner hole wall 151 of the motor's rotating shaft 150. At least one of the movable part 110 and the fixed part 120 is used to connect to the motor's outer shell 160. In this way, the current flowing through the rotating shaft 150 is transmitted to the outer shell 160 through the conductive device, thereby reducing the current flowing through the rotating shaft 150 through the bearing, thereby reducing the electrical corrosion of the bearing; in addition, the arrangement of the movable part 110, the fixed part 120 and the electrical contact structure 200 can adjust the outer diameter of the electrical contact structure 200, thereby being suitable for rotating shafts 150 with different inner diameters. When the electrical contact structure 200 is worn, the outer diameter of the electrical contact structure 200 can also be adjusted so that the electrical contact structure 200 can continue to contact the inner hole wall 151 of the rotating shaft 150.

[0106] like Figure 1 As shown, the motor includes a housing 160, a first bearing 190, a rotating shaft 150, a second bearing 191, a third bearing 192, a motor rotor 195, a motor stator 194, a motor shaft 193 and a fourth bearing (not shown). The housing 160 includes a housing body, a motor rear end cover plate (not shown) and a motor front end cover plate (not shown).

[0107] The housing body is connected to the rear end cover plate of the motor. The rear end cover plate of the motor is connected to the front end cover plate of the motor and the housing body. The fixing portion 122 is threadedly connected to the housing body. The rotating shaft 150 is connected to the housing body through the first bearing 190. The rotating shaft 150 is connected to the rear end cover plate of the motor through the second bearing 191. The motor shaft 193 is connected to the rear end cover plate of the motor through the third bearing 192. The motor shaft 193 is connected to the front end cover plate of the motor through the fourth bearing. The motor shaft 193 and the rotating shaft 150 are roughly coaxial. The motor rotor 195 is sleeved on the outer periphery of the motor shaft 193. The motor stator 194 is sleeved on the outer periphery of the motor rotor 195. The motor shaft 193 is connected to the rotating shaft 150.

[0108] The housing body has the aforementioned threaded hole 161. In this way, since the resistance of the conductive device is smaller than the resistance of the bearings (the first bearing 190, the second bearing 191, the third bearing 192 and the fourth bearing), the current on the motor shaft 193 is directly transferred to the housing body through the conductive device after passing through the rotating shaft 150, thereby preventing the current from flowing through the bearings and reducing the electrical corrosion of the bearings.

[0109] The utility model also provides a power assembly, which includes the above-mentioned motor.

[0110] In this embodiment, the power assembly includes the aforementioned motor, and the motor includes the aforementioned conductive device. When the electrical contact structure 200 is in the expanded state, the electrical contact structure 200 is used to abut against the inner hole wall 151 of the motor's rotating shaft 150, and at least one of the moving part 110 and the fixed part 120 is used to connect the motor's outer shell 160. In this way, the current flowing through the rotating shaft 150 is transmitted to the outer shell 160 through the conductive device, thereby reducing the current flowing through the rotating shaft 150 through the bearing, thereby reducing the electrical corrosion of the bearing; in addition, the setting of the moving part 110, the fixed part 120 and the electrical contact structure 200 can adjust the outer diameter of the electrical contact structure 200, thereby being suitable for rotating shafts 150 with different inner diameters. When the electrical contact structure 200 is worn, the outer diameter of the electrical contact structure 200 can also be adjusted so that the electrical contact structure 200 can continue to contact the inner hole wall 151 of the rotating shaft 150.

[0111] The utility model also provides a vehicle, which comprises the above-mentioned power assembly.

[0112] In this embodiment, the vehicle includes the aforementioned powertrain, the powertrain includes the aforementioned motor, the motor includes the aforementioned conductive device, and when the electrical contact structure 200 is in the expanded state, the electrical contact structure 200 is used to abut against the inner hole wall 151 of the rotating shaft 150 of the motor, and at least one of the moving part 110 and the fixed part 120 is used to connect to the outer shell 160 of the motor, so that the current flowing through the rotating shaft 150 is transmitted to the outer shell 160 through the conductive device, reducing the current flowing through the rotating shaft 150 through the bearing, thereby reducing the electrical corrosion of the bearing; in addition, the setting of the moving part 110, the fixed part 120 and the electrical contact structure 200 can adjust the outer diameter of the electrical contact structure 200, and thus be suitable for rotating shafts 150 with different inner diameters. When the electrical contact structure 200 is worn, the outer diameter of the electrical contact structure 200 can also be adjusted so that the electrical contact structure 200 can continue to contact the inner hole wall 151 of the rotating shaft 150.

[0113] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

[0114] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "component" and the like appearing herein may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" and the like appearing herein may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

Claims

1. A conductive device, characterized in that: The conductive device comprises: Fixings; A moving member, wherein the moving member is movable along a first direction relative to the fixed member; An electrical contact structure is movably arranged on the fixed part and / or the movable part. When the movable part moves along the first direction, the electrical contact structure can move in the second direction to electrically contact the charged part. The first direction forms an angle with the second direction.

2. The conductive device according to claim 1, characterized in that The electrical contact structure includes a connecting portion and an electrical contact portion, wherein the connecting portion is rotatably arranged on the fixed portion and / or the movable portion, and the electrical contact portion is arranged on the connecting portion and is used to electrically contact the live portion. When the movable portion moves along the first direction, the connecting portion can rotate and drive the electrical contact structure to move in the second direction to electrically contact the live portion.

3. The conductive device according to claim 2, characterized in that: The connecting portion comprises: A supporting rib, wherein a first end of the supporting rib is pivotally connected to the fixing member; An umbrella rib assembly, the umbrella rib assembly comprising: a first rib member, a first end of the first rib member being connected to the electrical contact portion, and the first rib member being pivotally connected to the supporting rib; a second rib member, wherein a first end of the second rib member is pivotally connected to a second end of the first rib member; A third umbrella rib member, wherein a first end of the third umbrella rib member is pivotally connected to the moving member, a second end of the third umbrella rib member is pivotally connected to the supporting umbrella rib, and the third umbrella rib member is also pivotally connected to the second end of the second umbrella rib member.

4. The conductive device according to claim 2, characterized in that: The fixing member includes an umbrella disc portion and a fixing portion, the umbrella disc portion is connected to the fixing portion, the fixing portion is used to be connected to a grounded shell, the umbrella disc portion and the fixing portion are both circumferentially closed annular structures, the movable member is movably arranged in the fixing portion and the umbrella disc portion along the first direction, and the umbrella disc portion is pivotally connected to the connecting portion.

5. The conductive device according to claim 4, characterized in that: The fixing portion is used to pass through the grounded housing, and the fixing portion has an external thread, and the external thread is used to be threadedly connected to the housing.

6. The conductive device according to claim 4, characterized in that: The fixing member further comprises a rod portion, one end of which is connected to the fixing portion, and the other end of which is connected to the umbrella disc portion.

7. The conductive device according to claim 6, characterized in that: There are a plurality of rod portions, and the plurality of rod portions are circumferentially spaced around the moving member.

8. The conductive device according to claim 4, characterized in that: The conductive device further comprises a sealing member, and the sealing member is arranged between the fixed part and the moving part.

9. The conductive device according to claim 4, characterized in that: The electrical contact structure has a retracted state. When the electrical contact structure is in the retracted state, an outer diameter of the electrical contact structure is smaller than an outer diameter of the fixing portion.

10. The conductive device according to claim 2, characterized in that: The electrical contact is configured as an electrically conductive fiber element.

11. The conductive device according to claim 2, characterized in that: The electrical contact structure further includes a cylindrical portion, into which the electrical contact portion and the connecting portion extend.

12. The conductive device according to claim 3, characterized in that There are a plurality of supporting ribs, and the plurality of supporting ribs are arranged at intervals in the circumferential direction around the moving part; There are multiple umbrella rib assemblies, and the multiple umbrella rib assemblies correspond one-to-one to the multiple supporting umbrella ribs.

13. A motor, characterized in that: The electric machine comprises an electrical conducting device according to any one of claims 1 to 12.

14. A powertrain, characterized in that: The powertrain includes the electric machine according to claim 13 .

15. A vehicle, characterized in that: The vehicle includes the powertrain according to claim 14.

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