Transmission device and vehicle

Abstract

The utility model relates to the technical field of gearboxes, and discloses a transmission device and a vehicle, which comprise a conductive mechanism, an insulating bearing, a connecting shaft and a shell, the connecting shaft is sleeved with the conductive mechanism, the conductive mechanism is electrically connected with the connecting shaft and the shell, current on the connecting shaft can be conducted to the shell through the conductive mechanism, the shell is arranged to be grounded, and therefore the current on the connecting shaft is led out; the connecting shaft is sleeved with the insulating bearing, the insulating bearing is connected with the connecting shaft and the shell, so that the connecting shaft can be rotationally connected with the shell through the insulating bearing, rotation of the connecting shaft is achieved, and meanwhile electric corrosion caused by the fact that current passes through the bearing is avoided through the insulating bearing. The technical problem that in the prior art, a bearing is electrically corroded, and consequently a vehicle breaks down is solved, and the technical effects that the current of the connecting shaft is led out, meanwhile, the bearing cannot be electrically corroded, and the vehicle is not prone to breaking down are achieved.

Description

Technical Field

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

[0002] The development of the automotive industry is placing higher demands on vehicle lifespan and operational stability. In electric vehicles, in particular, both the generator's input shaft and the drive shaft powered by the motor generate shaft currents. These currents are transmitted through the drive shaft to the bearings mounted on the drive shaft, and then to other components. However, when current flows through the bearings, the metal bearings can suffer electrical corrosion, potentially leading to bearing failure and, consequently, vehicle malfunction. Utility Model Content

[0003] The purpose of the utility model is to provide a transmission device and a vehicle, which solve the technical problem in the prior art that the electrical corrosion of bearings causes vehicle failure.

[0004] In order to solve the above technical problems, the utility model provides a transmission device, including a conductive mechanism, an insulating bearing, a connecting shaft and a housing; the conductive mechanism is sleeved on the connecting shaft, and the conductive mechanism is electrically connected to the connecting shaft and the housing respectively, and the current on the connecting shaft can be transmitted to the housing through the conductive mechanism, and the housing is set to be grounded; the insulating bearing is sleeved on the connecting shaft, and the insulating bearing is connected to the connecting shaft and the housing respectively, so that the connecting shaft can be rotatably connected to the housing through the insulating bearing.

[0005] The utility model also provides a vehicle, comprising the transmission device.

[0006] The utility model provides a transmission device, including a conductive mechanism, an insulating bearing, a connecting shaft, and a housing; the conductive mechanism is sleeved on the connecting shaft, and the conductive mechanism is electrically connected to the connecting shaft and the housing respectively. The current on the connecting shaft can be conducted to the housing via the conductive mechanism, and the housing is grounded, thereby achieving the extraction of the current on the connecting shaft; the insulating bearing is sleeved on the connecting shaft, and the insulating bearing is connected to the connecting shaft and the housing respectively, so that the connecting shaft can be rotatably connected to the housing through the insulating bearing, thereby achieving the rotation of the connecting shaft, and at the same time, the insulating bearing is used to avoid electrical corrosion caused by current passing through the bearing. The utility model solves the technical problem of vehicle failure caused by electrical corrosion of the bearing in the prior art, achieves the technical effect of extracting the current from the connecting shaft, and at the same time, the bearing is not subject to electrical corrosion, and the vehicle is less likely to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a cross-sectional view of the transmission device mentioned in the embodiment of the present utility model;

[0008] Figure 2 for Figure 1 Schematic diagram of the structure of local A;

[0009] Figure 3 for Figure 1 Schematic diagram of the structure of local B;

[0010] Figure 4 for Figure 1 Schematic diagram of the structure of the local C;

[0011] Figure 5 for Figure 1 Schematic diagram of the local structure of D.

[0012] In the figure, 1-conductive mechanism; 101-connecting plate; 102-conductive brush; 103-connecting ring; 2-shaft sleeve; 3-insulating bearing; 4-connecting shaft; 5-housing; 6-power generation module; 7-electric drive module; 8-speed change mechanism. DETAILED DESCRIPTION

[0013] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0014] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0015] Currently, in electric vehicles, both the input shaft of the electric vehicle's generator and the drive shaft powered by the motor will generate shaft current. The shaft current will be transmitted through the drive shaft to the bearings mounted on the drive shaft, and then transmitted to other parts through the bearings. However, when the current passes through the bearings, the metal bearings will produce electrical corrosion, which may cause the bearings to fail, thereby causing vehicle failure.

[0016] In view of this, if Figures 1-4 As shown, some embodiments of the present invention provide a transmission device, including a conductive mechanism 1, an insulating bearing 3, a connecting shaft 4 and a housing 5; the conductive mechanism 1 is sleeved on the connecting shaft 4, and the conductive mechanism 1 is electrically connected to the connecting shaft 4 and the housing 5 respectively, and the current on the connecting shaft 4 can be transmitted to the housing 5 through the conductive mechanism 1, and the housing 5 is set to be grounded; the insulating bearing 3 is sleeved on the connecting shaft 4, and the insulating bearing 3 is connected to the connecting shaft 4 and the housing 5 respectively, so that the connecting shaft 4 can be rotatably connected to the housing 5 through the insulating bearing 3.

[0017] In the above embodiment, the insulating bearing 3 can be a ceramic ball bearing or a bearing with an insulating paint sprayed on the bearing surface. The insulating bearing 3 is sleeved on the connecting shaft 4 and embedded in the inner wall of the housing 5 so that the connecting shaft 4 can rotate relative to the housing 5 through the insulating bearing 3. The connecting shaft 4 rotates more smoothly and avoids the current on the connecting shaft 4 from being directed to the housing 5 through the insulating bearing 3. The housing 5 can be cast with conductive metal. There can be one insulating bearing 3 or multiple insulating bearings 3. The multiple insulating bearings 3 are spaced apart along the axial direction of the connecting shaft 4 so that The connecting shaft 4 can rotate relative to the shell 5 through multiple insulating bearings 3, and the rotation process of the connecting shaft 4 is more stable. A conductive mechanism 1 is also sleeved on the connecting shaft 4, and the conductive mechanism 1 can be slidably connected to the surface of the connecting shaft 4. The conductive mechanism 1 can be fixed on the inner wall of the shell 5, so that the connecting shaft 4 can also conduct current to the shell 5 through the conductive mechanism 1 during rotation, and the shell 5 can be grounded, thereby realizing the derivation of current on the connecting shaft 4, limiting the path of current derivation on the connecting shaft 4, and avoiding the current from being diverted through the metal bearing to the bearing to cause electrical corrosion, thereby reducing the failure rate.

[0018] Some embodiments of the present invention provide a transmission device comprising a conductive mechanism 1, an insulating bearing 3, a connecting shaft 4, and a housing 5. Current on the connecting shaft 4 can be conducted to the housing 5 via the conductive mechanism 1, and the housing 5 is grounded, thereby enabling the current on the connecting shaft 4 to be conducted away. The connecting shaft 4 can be rotatably connected to the housing 5 via the insulating bearing 3, thereby enabling the rotation of the connecting shaft 4. Furthermore, the insulating bearing 3 also prevents electrical corrosion caused by current passing through the bearing. This solves the technical problem of vehicle failure caused by electrical corrosion of bearings in the prior art, achieving the technical effect of conducting current away from the connecting shaft 4 while preventing the bearing from being corroded, making the vehicle less susceptible to failure.

[0019] In an optional embodiment, the conductive mechanism 1 includes a connecting disk 101 and a conductive brush 102; the connecting disk 101 is sleeved on the connecting shaft 4, and the connecting disk 101 is spaced apart from the surface of the connecting shaft 4. A conductive brush 102 is provided on the connecting disk 101, and the conductive brush 102 is respectively connected to the connecting shaft 4 and the connecting disk 101 by electrical signals, and the conductive brush 102 is slidably connected to the connecting shaft 4.

[0020] In the above embodiment, the connecting disk 101 and the conductive brush 102 can both be made of metal, and the conductive brush 102 can also be a carbon brush. The connecting disk 101 is in a circular shape, and the axis of the connecting disk 101 is arranged to coincide with the axis of the connecting shaft 4, and the inner diameter of the connecting disk 101 is larger than the outer diameter of the connecting shaft 4, so that the inner diameter of the connecting disk 101 is spaced apart from the surface of the connecting shaft 4, and a conductive brush 102 is provided at the inner diameter of the connecting disk 101. One end of the conductive brush 102 can be bonded to the connecting disk 101 by conductive glue, or fixed to the conductive disk by bolts. The other end of the conductive brush 102 is provided with bristles, and the bristles can be carbon brushes, so that the connecting disk 101 can be electrically connected to the connecting shaft 4, and the current on the connecting shaft 4 can be discharged through the bristles, the conductive brush 102, the connecting disk 101 and the housing 5.

[0021] In an optional embodiment, a connecting ring 103 is provided on both sides of the connecting disk 101, and the two connecting rings 103 are respectively tightly attached to the two sides of the connecting disk 101. A receiving groove is provided in the shell 5, and the two connecting rings 103 are respectively connected to the two inner walls of the receiving groove on the side away from the connecting disk 101.

[0022] In the above embodiment, the connecting ring 103 is annular, the outer diameter of the connecting ring 103 is consistent with the outer diameter of the connecting disk 101, the inner diameter of the connecting ring 103 is larger than the inner diameter of the connecting disk 101, and the connecting ring 103 is also made of conductive metal. The two connecting rings 103 can be fixed on both sides of the connecting disk 101 respectively, and the axis of each connecting ring 103 is arranged to coincide with the axis of the connecting disk 101. Each connecting ring 103 can be bonded to the connecting disk 101 by conductive glue, or fixed to the connecting disk 101 by bolts. On the disk 101, an arc-shaped receiving groove is provided at the corresponding position of the shell 5, and the receiving groove is arranged axially along the inner wall of the shell 5. The connecting disk 101 and the connecting rings 103 on both sides are placed in the receiving groove, so that the connecting rings 103 on both sides are tightly attached to the inner wall of the receiving groove, thereby realizing the electrical signal connection between the connecting ring 103 and the inner wall of the shell 5, and the connecting ring 103 can be bonded to the inner wall of the receiving groove by conductive glue, or connected to the inner wall of the receiving groove by bolts, thereby realizing the electrical connection between the connecting ring 103 and the shell 5.

[0023] In an optional embodiment, a plurality of conductive brushes 102 are provided, and the plurality of conductive brushes 102 are arranged at intervals along the circumference of the connecting disk 101 , and each conductive brush 102 is connected to the connecting disk 101 via a bolt.

[0024] In the above embodiment, the length directions of the multiple conductive brushes 102 are all arranged toward the axis of the connecting shaft 4, and one side of the bristles of the multiple conductive brushes 102 are slidingly connected to the connecting shaft 4, and the other side is connected to the connecting disk 101, so that the electrical signal connection between the connecting shaft 4 and the connecting disk 101 is more secure.

[0025] In an optional embodiment, a plurality of connection holes are provided on the connection disk 101, the axis of each connection hole is arranged toward the axis of the connection disk 101, the plurality of connection holes are evenly arranged along the circumference of the connection disk 101, and each connection hole is connected to a conductive brush 102 via a bolt.

[0026] In the above embodiment, the number of connecting holes is consistent with the number of conductive brushes 102. The connecting holes can be set to be circular or diamond-shaped. The length direction of each connecting hole is set toward the axis of the connecting shaft 4. Multiple connecting holes are evenly arranged along the circumference of the connecting disk 101. Each connecting hole is set through the connecting disk 101 along the radius of the connecting disk 101. Each conductive brush 102 extends into the opening of the connecting hole close to the connecting shaft 4, and then a bolt is set at the other opening of the connecting hole. The bolt can be connected to the conductive brush 102 to firmly connect the conductive brush 102 to the connecting disk 101.

[0027] In an optional embodiment, a sleeve 2 is provided between the conductive mechanism 1 and the connecting shaft 4; the sleeve 2 is sleeved on the connecting shaft 4, and the connecting shaft 4 can drive the sleeve 2 to rotate relative to the conductive mechanism 1. The conductive mechanism 1 is sleeved on the sleeve 2 and is slidingly connected to the sleeve 2, and the sleeve 2 is electrically connected to the connecting shaft 4 and the conductive mechanism 1 respectively.

[0028] In the above embodiment, the sleeve 2 can be set to a conductive metal material. The sleeve 2 can be connected to the surface of the connecting shaft 4 by a thread or by a pin. The sleeve 2 can be fixedly connected to the connecting shaft 4, and the sleeve 2 and the connecting shaft 4 are electrically connected. The outer surface of the sleeve 2 is connected to the conductive brush 102, so that during the rotation of the connecting shaft 4, the connecting shaft 4 can drive the sleeve 2 to slide relative to the conductive brush 102, thereby avoiding direct connection between the conductive brush 102 and the connecting shaft 4, causing the conductive brush 102 to rub against the connecting shaft 4, thereby affecting the strength of the connecting shaft 4.

[0029] In an optional embodiment, a power generation module 6 and an electric drive module 7 are provided in the shell 5; the power generation module 6 and the electric drive module 7 are respectively sleeved on the connecting shaft 4 and connected to the connecting shaft 4, and an insulating bearing 3 and a conductive mechanism 1 are respectively provided on both sides of the power generation module 6 and the electric drive module 7.

[0030] In the above embodiment, the power generation module 6 can utilize the principle of a generator, and the power generation module 6 can include a permanent magnet and a coil, that is, a permanent magnet or a coil can be provided on the connecting shaft 4, and a coil or a permanent magnet can be correspondingly provided on the inner wall of the shell 5, so that power generation can be generated during the rotation of the connecting shaft 4, and along the axial direction of the connecting shaft 4, an insulating bearing 3 is provided on one side of the power generation module 6, and a conductive mechanism 1 is provided on the other side. In the electric drive module 7, the electric drive module 7 can utilize the principle of a motor, and a coil or a permanent magnet can be provided on the connecting shaft 4, and a permanent magnet or a coil can be correspondingly provided on the inner wall of the shell 5, so that the electric drive module 7 can drive the connecting shaft 4 to rotate relative to the shell 5 under the drive of external current, and an insulating bearing 3 can be provided on one side of the electric drive module 7, and a conductive mechanism 1 can be provided on the other side, so as to realize the derivation of current from each position on the connecting shaft 4 where current is easily generated.

[0031] In an optional embodiment, the two conductive mechanisms 1 are arranged far away from each other, and the two insulating bearings 3 are arranged close to each other.

[0032] In the above embodiment, the two conductive mechanisms 1 are respectively arranged on the side of the power generation module 6 and the electric drive module 7 that are away from each other, and the insulating bearing 3 can be arranged on the side of the power generation module 6 and the electric drive module 7 that are close to each other, so that when the connecting shafts 4 in the power generation module 6 and the electric drive module 7 generate current respectively, it can avoid being discharged through the bearings and can be introduced into the housing 5 through the conductive mechanisms 1 on both sides.

[0033] Optionally, two insulating bearings 3 can be provided, and both insulating bearings 3 are arranged between the power generation module 6 and the electric drive module 7. At the same time, multiple insulating bearings 3 can also be provided, and each bearing in the transmission device can adopt an insulating bearing 3.

[0034] In an optional embodiment, a speed change mechanism 8 is further included. The speed change mechanism 8 is arranged on a side of the electric drive module 7 away from the power generation module 6 , and the speed change mechanism 8 is connected to the connecting shaft 4 .

[0035] In the above embodiment, the speed shift mechanism 8 may include a gearbox, and an output shaft is provided on the speed shift mechanism 8. One end of the speed shift mechanism 8 is connected to the connecting shaft 4 so that the connecting shaft 4 can input power into the speed shift mechanism 8. Then, after the speed is shifted through the gears or planetary gears in the speed shift mechanism 8, the output shaft of the speed shift mechanism 8 can output power to the differential of the front axle or the rear axle.

[0036] The utility model also provides a vehicle, comprising a transmission device, which can be arranged in a driving cabin of the vehicle or on a chassis of the vehicle, and can be transmission-connected to an engine or a motor.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transmission device, characterized in that: It includes a conductive mechanism, an insulating bearing, a connecting shaft and a housing; The conductive mechanism is sleeved on the connecting shaft, and is electrically connected to the connecting shaft and the housing respectively. The current on the connecting shaft can be conducted to the housing through the conductive mechanism, and the housing is grounded. The insulating bearing is sleeved on the connecting shaft, and the insulating bearing is connected to the connecting shaft and the housing respectively, so that the connecting shaft can be rotatably connected to the housing through the insulating bearing.

2. The transmission device according to claim 1, characterized in that The conductive mechanism includes a connecting plate and a conductive brush; The connecting disk is sleeved on the connecting shaft, and the connecting disk is spaced apart from the surface of the connecting shaft. The connecting disk is provided with the conductive brush, and the conductive brush is respectively connected to the connecting shaft and the connecting disk by electrical signals, and the conductive brush is slidably connected to the connecting shaft.

3. The transmission device according to claim 2, characterized in that: A connecting ring is provided on both sides of the connecting disk, and the two connecting rings are respectively tightly attached to the two sides of the connecting disk. A accommodating groove is provided in the shell, and the two connecting rings are respectively connected to the two inner walls of the accommodating groove on the side away from the connecting disk.

4. The transmission device according to claim 2, characterized in that: There are a plurality of conductive brushes, which are spaced apart along the circumference of the connecting disk, and each of the conductive brushes is connected to the connecting disk via a bolt.

5. The transmission device according to claim 4, characterized in that: The connecting disk is provided with a plurality of connecting holes, the axis of each connecting hole is arranged toward the axis of the connecting disk, the plurality of connecting holes are evenly arranged along the circumference of the connecting disk, and each connecting hole is connected to a conductive brush via a bolt.

6. The transmission device according to claim 5, characterized in that A shaft sleeve is provided between the conductive mechanism and the connecting shaft; The sleeve is sleeved on the connecting shaft, and the connecting shaft can drive the sleeve to rotate relative to the conductive mechanism. The conductive mechanism is sleeved on the sleeve and slidably connected to the sleeve. The sleeve is electrically connected to the connecting shaft and the conductive mechanism respectively.

7. The transmission device according to claim 1, characterized in that A power generation module and an electric drive module are provided in the housing; The power generation module and the electric drive module are respectively sleeved on the connecting shaft and connected to the connecting shaft. An insulating bearing and a conductive mechanism are respectively provided on both sides of the power generation module and the electric drive module.

8. The transmission device according to claim 7, characterized in that The two conductive mechanisms are arranged far away from each other, and the two insulating bearings are arranged close to each other.

9. The transmission device according to claim 7, characterized in that: It also includes a speed change mechanism, which is arranged on a side of the electric drive module away from the power generation module, and is connected to the connecting shaft.

10. A vehicle, characterized in that: The invention comprises a transmission device as claimed in any one of claims 1 to 9.

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