Motor and vehicle

Abstract

The utility model discloses a motor and a vehicle. The motor comprises a shell, a motor shaft, a bearing and a partition piece, and the shell is provided with a containing cavity; the motor shaft is arranged in the containing cavity and rotationally arranged on the shell. The bearing is arranged on the periphery of the motor shaft and located between the shell and the motor shaft. The partition piece is arranged on the shell and located between the bearing and the shell, and the partition piece is rotationally connected with the bearing; the partition is used for isolating current. According to the utility model, the partition piece with the effect of isolating current is arranged between the bearing and the shell so as to isolate a current loop formed among the motor shaft, the bearing and the shell, so that the electric corrosion influence on the motor shaft can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a motor and a vehicle. Background Art

[0002] In the electric drive system of new energy vehicles, the problem of electrical corrosion of motor bearings is often encountered. For bearing electrical corrosion, the commonly used solutions in the industry include: ceramic ball bearings, conductive brushes, conductive bearings, etc. The ceramic ball bearing solution and the conductive brush solution both have the problem of high cost. The conductive brush also has the risk of unstable conductivity and cannot completely avoid bearing electrical corrosion. The conductive bearing solution uses conductive grease for electrical conduction. In the later stage of use, the grease leaks, and this solution has the problem of decreased conductivity in the later stage. Utility Model Content

[0003] The main purpose of the utility model is to provide a motor, which is intended to isolate current to prevent the bearing from being corroded by electricity.

[0004] To achieve the above-mentioned purpose, the motor proposed by the utility model comprises:

[0005] A housing, wherein the housing is provided with a receiving cavity;

[0006] A motor shaft, the motor shaft is disposed in the accommodating cavity and rotatably disposed on the housing;

[0007] a bearing, the bearing being disposed on the outer periphery of the motor shaft and being located between the housing and the motor shaft; and

[0008] A partition member is provided on the shell and is located between the bearing and the shell. The partition member is rotatably connected to the bearing. The partition member is used to isolate the current.

[0009] In one embodiment of the present invention, the partition member comprises:

[0010] A fixing sleeve, the fixing sleeve is annular, the fixing sleeve is sleeved on the outer periphery of the bearing, and is rotatably connected to the bearing; and

[0011] An insulating layer is arranged on a side of the fixing sleeve away from the bearing and is located between the housing and the partition member.

[0012] In one embodiment of the present invention, the insulating layer is made of ceramic;

[0013] And / or, the fixing sleeve is made of steel.

[0014] In one embodiment of the present invention, the fixing sleeve comprises:

[0015] A fixing portion, which is annular and sleeved on the outer peripheral side of the bearing; and

[0016] The blocking portion is arranged at the edge of the fixing portion and extends along the radial direction of the fixing portion, and the blocking portion is arranged at a distance from the bearing.

[0017] In an embodiment of the present invention, the motor further comprises a buffer member, which is sleeved on the motor shaft and located between the blocking portion and the bearing.

[0018] In an embodiment of the present invention, the insulating layer is coated on the fixing sleeve; after the fixing sleeve is coated with the insulating layer, it is formed by an integral die-casting process and connected to the housing.

[0019] In one embodiment of the utility model, a first limiting groove is provided on a side of the insulating layer facing the shell, and a first limiting protrusion is provided on a side of the shell facing the insulating layer, and the first limiting protrusion is inserted into the first limiting groove;

[0020] And / or, a second limiting groove is provided on a side of the insulating layer facing the fixing sleeve, a second limiting protrusion is provided on a side of the fixing sleeve facing the insulating layer, and the second limiting protrusion is inserted into the second limiting groove.

[0021] In one embodiment of the utility model, the housing comprises a housing body, a rear end cover and a front end cover, wherein the rear end cover and the front end cover are respectively arranged at two ends of the housing body and enclose the accommodating cavity; the two ends of the bearing are respectively rotatably connected to the rear end cover and the front end cover;

[0022] A receiving groove is provided on one side of the rear end cover facing the receiving cavity, and the partition piece and the bearing are received in the receiving groove.

[0023] In one embodiment of the present invention, the motor further comprises:

[0024] A rotor, the rotor is arranged in the accommodating cavity and sleeved on the motor shaft;

[0025] The stator is arranged in the accommodating cavity and connected to the housing; the stator is sleeved on the rotor.

[0026] The utility model also provides a vehicle, the vehicle comprising:

[0027] the vehicle body; and

[0028] The motor as described above is arranged on the vehicle body.

[0029] In the technical solution of the utility model, a partition with a current isolation function is arranged between the bearing and the housing to isolate the current loop formed between the motor shaft, the bearing and the housing, thereby avoiding electrical corrosion to the motor shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of a motor of the utility model;

[0032] Figure 2 for Figure 1 A partial schematic diagram of the

[0033] Figure 3 It is a schematic structural diagram of a partition member in another embodiment of the motor of the utility model.

[0034] Description of Figure Numbers:

[0035] Label name Label name 1 case 11 Shell body 12 Rear end cover 13 Front cover 2 Motor shaft 3 Partitions 31 Fixed set 311 Fixed part 312 Blocking part 313 The second limiting protrusion 32 Insulation layer 321 The first limiting groove 322 The second limiting groove 4 Bearings 5 Buffer

[0036] The implementation, functional features and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] The utility model provides a motor which can be applied to vehicles.

[0041] In the embodiment of the present utility model, Figure 1 As shown, the motor includes a shell 1, a motor shaft 2, a bearing 4 and a partition 3, wherein the shell 1 is provided with a accommodating cavity; the motor shaft 2 is arranged in the accommodating cavity and is rotatably arranged in the shell 1; the bearing 4 is arranged on the outer periphery of the motor shaft 2 and is located between the shell 1 and the motor shaft 2; the partition 3 is arranged in the shell 1 and is located between the bearing 4 and the shell 1, and the partition 3 is rotatably connected to the bearing 4; the partition 3 is used to isolate current.

[0042] It can be understood that in this embodiment, by arranging the partition 3 with the function of isolating current between the bearing 4 and the housing 1 to isolate the current loop formed between the motor shaft 2, the bearing 4 and the housing 1, the electrical corrosion effect on the motor shaft 2 can be avoided.

[0043] like Figure 1 As shown, the motor further includes a rotor and a stator. The rotor is arranged in the accommodating cavity and sleeved on the motor shaft 2. The stator is arranged in the accommodating cavity and connected to the housing 1. The stator is sleeved on the rotor. The rotor and the stator are the basic structure of the motor and will not be described in detail here.

[0044] In one embodiment of the present invention, Figure 1 As shown, the partition member 3 includes a fixing sleeve 31 and an insulating layer 32. The fixing sleeve 31 is annular, is sleeved on the outer periphery of the bearing 4, and is rotatably connected to the bearing 4. The insulating layer 32 is arranged on the side of the fixing sleeve 31 away from the bearing 4, and is located between the housing 1 and the partition member 3.

[0045] It can be understood that the insulating layer 32 can play a role in isolating current. The fixed sleeve 31 is rotatably connected to the bearing 4. The insulating layer 32 is arranged on the side of the fixed sleeve 31 away from the bearing 4, that is, the insulating layer 32 and the bearing 4 are separated by the fixed sleeve 31. When the bearing 4 and the fixed sleeve 31 are assembled, the insulating layer 32 will not be damaged. The insulating layer 32 can play a role of spacing protection, thereby ensuring the stability of the current isolation effect.

[0046] In one embodiment of the present invention, Figure 1 As shown, the insulating layer 32 is made of ceramic; the fixing sleeve 31 is made of steel.

[0047] It is understandable that the material of the fixing sleeve 31 is steel, which can play a role in stabilizing the support connection, and the ceramic has an insulating effect and can isolate the current.

[0048] In one embodiment of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, the fixing sleeve 31 includes a fixing portion 311 and a blocking portion 312. The fixing portion 311 is annular and is sleeved on the outer peripheral side of the bearing 4. The blocking portion 312 is arranged at the edge of the fixing portion 311 and extends radially along the fixing portion 311. The blocking portion 312 is spaced apart from the bearing 4.

[0049] It can be understood that the blocking portion 312 can separate the bearing 4 from the housing 1 , and the insulating layer 32 extends from the fixing portion 311 to the blocking portion 312 , which can further play a role of complete insulation.

[0050] In one embodiment of the present invention, Figure 1 As shown, the motor further includes a buffer member 5 , which is sleeved on the motor shaft 2 and located between the blocking portion 312 and the bearing 4 .

[0051] It is understandable that the design of the buffer member 5 can, on the one hand, buffer the bearing 4 and provide a certain movable space for the bearing 4, and on the other hand, can prevent the bearing 4 from directly colliding with the blocking portion 312, thereby playing a protective role.

[0052] In one embodiment of the present invention, Figure 1 As shown, the insulating layer 32 is coated on the fixing sleeve 31 ; after the fixing sleeve 31 is coated with the insulating layer 32 , it is formed by an integral die-casting process and connected to the housing 1 .

[0053] It can be understood that after the insulating layer 32 is coated on the fixing sleeve 31 , the fixing sleeve 31 is connected to the housing 1 through an integrated die-casting process, which is simple in process and low in cost.

[0054] In one embodiment of the present invention, Figure 3 As shown, a first limiting groove 321 is provided on a side of the insulating layer 32 facing the shell 1 , and a first limiting protrusion is provided on a side of the shell 1 facing the insulating layer 32 , and the first limiting protrusion is inserted into the first limiting groove 321 .

[0055] It can be understood that, through the cooperation between the first limiting groove 321 and the first limiting protrusion, the connection stability between the housing 1 and the insulating layer 32 can be improved.

[0056] In one embodiment of the present invention, Figure 3 As shown, a second limiting groove 322 is provided on a side of the insulating layer 32 facing the fixing sleeve 31 , and a second limiting protrusion 313 is provided on a side of the fixing sleeve 31 facing the insulating layer 32 . The second limiting protrusion 313 is inserted into the second limiting groove 322 .

[0057] It can be understood that the connection stability between the fixing sleeve 31 and the insulating layer 32 can be improved through the cooperation between the second limiting groove 322 and the second limiting protrusion 313 .

[0058] In one embodiment of the present invention, Figure 1 As shown, the shell 1 includes a shell body 11, a rear end cover 12 and a front end cover 13, the rear end cover 12 and the front end cover 13 are respectively arranged at the two ends of the shell body 11, and enclose the accommodating cavity; the two ends of the bearing 4 are rotatably connected with the rear end cover 12 and the front end cover 13 respectively; the rear end cover 12 is provided with an accommodating groove on the side facing the accommodating cavity, and the partition member 3 and the bearing 4 are accommodated in the accommodating groove.

[0059] It can be understood that a receiving groove is provided at the position of the rear end cover 12 to facilitate the quick positioning and assembly of the partition member 3 and the bearing 4. Bearings 4 are provided at the connection between the rear end cover 12 and the front end cover 13 and the motor shaft 2. A partition member 3 with a current isolation function can be provided at the rear end cover 12 or the front end cover 13. In the present embodiment, the partition member 3 is provided at the rear end cover 12 to facilitate the connection of the partition member 3 with the housing 1 through an integrated die-casting process. The current circuit has been isolated at the rear end cover 12, and the partition member 3 does not need to be provided at the front end cover 13.

[0060] It should be noted that in another embodiment, the partition member 3 may be provided at the front end cover 13, but not at the rear end cover 12. In some other embodiments, the partition member 3 may be provided at both the front end cover 13 and the rear end cover 12.

[0061] The utility model also provides a vehicle, which includes a vehicle body and a motor. The specific structure of the motor refers to the above embodiments. Since the vehicle adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. The motor is arranged in the vehicle body.

[0062] The above description is only an optional embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the creative concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A motor, characterized in that: The motor comprises: A housing, wherein the housing is provided with a receiving cavity; A motor shaft, the motor shaft is disposed in the accommodating cavity and rotatably disposed on the housing; a bearing, the bearing being disposed on the outer periphery of the motor shaft and being located between the housing and the motor shaft; and A partition member is provided on the shell and is located between the bearing and the shell. The partition member is rotatably connected to the bearing. The partition member is used to isolate the current.

2. The motor according to claim 1, characterized in that The partition member comprises: A fixing sleeve, the fixing sleeve is annular, the fixing sleeve is sleeved on the outer periphery of the bearing, and is rotatably connected to the bearing; and An insulating layer is arranged on a side of the fixing sleeve away from the bearing and is located between the housing and the partition member.

3. The motor according to claim 2, characterized in that The insulating layer is made of ceramic; And / or, the fixing sleeve is made of steel.

4. The motor according to claim 2, characterized in that The fixing sleeve comprises: A fixing portion, which is annular and sleeved on the outer peripheral side of the bearing; and The blocking portion is arranged at the edge of the fixing portion and extends along the radial direction of the fixing portion, and the blocking portion is arranged at a distance from the bearing.

5. The motor according to claim 4, characterized in that The motor further comprises a buffer member, which is sleeved on the motor shaft and located between the blocking portion and the bearing.

6. The electric machine according to any one of claims 2 to 5, characterized in that The insulating layer is coated on the fixing sleeve; after the fixing sleeve is coated with the insulating layer, it is formed by an integral die-casting process and connected to the housing.

7. The electric machine according to any one of claims 2 to 5, characterized in that A first limiting groove is provided on a side of the insulating layer facing the shell, and a first limiting protrusion is provided on a side of the shell facing the insulating layer, and the first limiting protrusion is inserted into the first limiting groove; And / or, a second limiting groove is provided on a side of the insulating layer facing the fixing sleeve, a second limiting protrusion is provided on a side of the fixing sleeve facing the insulating layer, and the second limiting protrusion is inserted into the second limiting groove.

8. The electric machine according to any one of claims 1 to 5, characterized in that The housing comprises a housing body, a rear end cover and a front end cover, wherein the rear end cover and the front end cover are respectively arranged at two ends of the housing body and enclose the accommodating cavity; the two ends of the bearing are respectively rotatably connected to the rear end cover and the front end cover; A receiving groove is provided on one side of the rear end cover facing the receiving cavity, and the partition piece and the bearing are received in the receiving groove.

9. The motor according to claim 1, characterized in that The motor also includes: A rotor, the rotor is arranged in the accommodating cavity and sleeved on the motor shaft; The stator is arranged in the accommodating cavity and connected to the housing; the stator is sleeved on the rotor.

10. A vehicle, characterized in that: The vehicle comprises: the vehicle body; and The motor according to any one of claims 1 to 9, wherein the motor is provided on the vehicle body.

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