Drive shaft and vehicle

Abstract

The utility model discloses a driving shaft and a vehicle, the driving shaft comprises: a first rotating shaft, which is connected between a differential mechanism and a driving wheel, and is circumferentially provided with a thinning groove; the second rotating shaft is arranged in the first rotating shaft, the second rotating shaft comprises an input shaft body and an output shaft body, the input shaft body is in transmission connection with the differential mechanism, the output shaft body is in transmission connection with the driving wheel, a centrifugal part is arranged on the input shaft body, and the centrifugal part and the thinning groove are oppositely arranged; wherein the centrifugal part is provided with an initial position and an unfolding position, and when the thinning groove is broken, the centrifugal part is located at the unfolding position and drives the input shaft body to be in transmission connection with the output shaft body. By arranging the centrifugal part, after the first rotating shaft is broken, the centrifugal part can drive the input shaft body and the output shaft body to be in transmission connection, the second rotating shaft replaces the first rotating shaft to complete the power transmission process, a user can drive the vehicle to a maintenance site, and the vehicle is prevented from being parked in a wild or an expressway or other places.

Description

Technical Field

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

[0002] The transmission system is used to transfer the power generated by the engine to the drive wheels so that the vehicle can move. It mainly includes a clutch, a transmission, a rotating shaft and a differential. The transmission system is divided into a main power system and an auxiliary power system.

[0003] However, if the main power of the transmission system breaks during driving, important parts such as the clutch, transmission and differential may be damaged, resulting in inability to shift gears, sudden stops or inability to control the vehicle, which poses a great safety hazard and high maintenance costs. In addition, when parking in the wilderness or on the highway, users need to wait for rescue on the spot, which adds extra costs and delays a long time. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a drive shaft, which is provided with a centrifugal part. After the first rotating shaft breaks, the centrifugal part can drive the second rotating shaft to replace the first rotating shaft to complete the power transmission process, thereby avoiding the parking of the vehicle in the wilderness or on the highway.

[0005] According to the driving shaft of the embodiment of the first aspect of the utility model, it includes: a first rotating shaft, which is connected between the differential and the driving wheel, and a thinning groove is arranged on the circumference of the first rotating shaft; a second rotating shaft, which is arranged in the first rotating shaft, and the second rotating shaft includes: an input shaft body and an output shaft body, the input shaft body is drivingly connected to the differential, the output shaft body is drivingly connected to the driving wheel, a centrifugal component is arranged on the input shaft body, and the centrifugal component and the thinning groove are arranged relative to each other; wherein, the centrifugal component has an initial position and an expanded position, and when it is broken at the thinning groove, the centrifugal component is located in the expanded position, and drives the input shaft body and the output shaft body to be drivingly connected.

[0006] According to the drive shaft of the embodiment of the utility model, a centrifugal part is provided. After the first rotating shaft breaks, the centrifugal part can drive the input shaft body and the output shaft body to be connected in transmission. The second rotating shaft replaces the first rotating shaft to complete the power transmission process. The user can drive the vehicle to the maintenance site to avoid parking the vehicle in the wilderness or on highways, thereby improving the safety factor of the vehicle and saving user time.

[0007] According to some embodiments of the utility model, a push block is provided on the input shaft body, and the push block is transmission-connected to the centrifugal member. When the centrifugal member is in the expanded position, the centrifugal member drives the push block to move toward the output shaft body so that the push block is transmission-connected to the output shaft body.

[0008] According to some embodiments of the utility model, a first meshing portion is provided on the output shaft body, and a second meshing portion is provided on an end of the push block away from the centrifugal member, and the first meshing portion and the second meshing portion are selectively meshed.

[0009] According to some embodiments of the utility model, the centrifugal component includes: a centrifugal part, a transmission part and a sliding part, the transmission part is connected between the centrifugal part and the sliding part, the sliding part and the push block are transmission connected so that when the centrifugal component is in the expanded position, the sliding part drives the push block to move toward the output shaft body.

[0010] According to some embodiments of the utility model, a first inclined surface is provided on the sliding portion, and a second inclined surface is provided on the pushing block, and the first inclined surface and the second inclined surface are arranged opposite to each other.

[0011] According to some embodiments of the present utility model, a sliding groove is provided on the inner wall of the input shaft body, and sliding protrusions are provided on both sides of the sliding portion, and the sliding protrusions are fitted in the sliding groove.

[0012] According to some embodiments of the present invention, the centrifugal part is a metal sphere.

[0013] According to some embodiments of the present invention, the thinning groove is provided on the circumferential outer side and / or inner side of the first rotating shaft.

[0014] According to some embodiments of the present invention, the cross-section of the thinning groove is trapezoidal or triangular.

[0015] A vehicle according to an embodiment of the second aspect of the utility model comprises the drive shaft.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a cross-sectional view of a drive shaft according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] 100. Drive shaft;

[0021] 10. first rotation axis; 11. thinning groove;

[0022] 20. Second rotating shaft; 21. Input shaft body; 22. Centrifugal member; 23. Centrifugal part; 24. Transmission part; 25. Sliding part; 26. First inclined surface; 27. Push block; 28. Second meshing part; 29. ​​Second inclined surface; 30. Output shaft body; 31. First meshing part. DETAILED DESCRIPTION

[0023] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0024] Reference below Figure 1 A drive shaft 100 according to an embodiment of the present invention is described, and the present invention also provides a vehicle.

[0025] Reference Figure 1 As shown, the driving shaft 100 of the embodiment of the utility model includes: a first rotating shaft 10 and a second rotating shaft 20 .

[0026] The first rotating shaft 10 is connected between the differential and the driving wheel, and a thinning groove 11 is provided on the circumference of the first rotating shaft 10. Specifically, the first rotating shaft 10 is connected between the differential and the driving wheel, and is used to bear the torque transmitted from the differential and transmit it to the driving wheel to complete related movements, such as moving forward or turning, etc. The power transmission path of the first rotating shaft 10 is the main power system in the transmission system.

[0027] In order to avoid damage to other more important parts connected to the first rotating shaft 10, a thinning groove 11 is arranged in the circumferential direction of the first rotating shaft 10. The thinning groove 11 is located at a relatively weak position. When the first rotating shaft 10 is subjected to an unexpectedly large torque, the thinning groove 11 will break first, thereby avoiding damage to other important parts. This method is simple to maintain and low in cost. In addition, the severity of the accident that may be caused by the damage to the first rotating shaft 10 is relatively small, which can reduce the damage to users and improve vehicle safety.

[0028] The first rotating shaft 10 may be a driving shaft 100 .

[0029] The second rotating shaft 20 is arranged in the first rotating shaft 10, and the second rotating shaft 20 includes: an input shaft body 21 and an output shaft body 30, the input shaft body 21 is drivingly connected to the differential, and the output shaft body 30 is drivingly connected to the drive wheel. Specifically, the power transmission path of the second rotating shaft 20 is an auxiliary power system in the transmission system, the input shaft body 21 is drivingly connected to the differential, and the output shaft body 30 is drivingly connected to the drive wheel, so that after the first rotating shaft 10 breaks, the second rotating shaft 20 can replace the first rotating shaft 10 to complete the power transmission, and avoid the vehicle parking in the wilderness or on the highway.

[0030] The input shaft 21 is provided with a centrifugal member 22, and the centrifugal member 22 is arranged relative to the thinning groove 11, wherein the centrifugal member 22 has an initial position and an expanded position, and when the thinning groove 11 is broken, the centrifugal member 22 is located in the expanded position, and drives the input shaft 21 and the output shaft 30 to be connected in transmission. Specifically, when the first rotating shaft 10 is in normal use, the input shaft 21 and the output shaft 30 are in a disconnected state, and the centrifugal member 22 is used to drive the input shaft 21 and the output shaft 30 to be connected after the first rotating shaft 10 is broken, so as to complete the power transmission. Specifically, the centrifugal member 22 is arranged relative to the thinning groove 11, and the position of the centrifugal member 22 changes from the initial position to the expanded position after the first rotating shaft 10 is broken at the thinning groove 11, and can drive the input shaft 21 and the output shaft 30 to be connected in transmission, and transmit the power from the differential to the drive wheel, so that the user can drive the vehicle to the maintenance site to avoid parking the vehicle in the wilderness or on the highway.

[0031] Furthermore, there may be a plurality of centrifugal members 22 , which are evenly arranged in the circumferential direction at positions opposite to the thinning grooves 11 .

[0032] Therefore, by setting the centrifugal part 22, after the first rotating shaft 10 breaks, the centrifugal part 22 can drive the input shaft 21 and the output shaft 30 to be connected in transmission, and the second rotating shaft 20 replaces the first rotating shaft 10 to complete the power transmission process. The user can drive the vehicle to the maintenance site and avoid parking the vehicle in the wilderness or on highways, thereby improving the safety factor of the vehicle and saving user time.

[0033] Reference Figure 1 As shown, a push block 27 is provided on the input shaft body 21, and the push block 27 is in transmission connection with the centrifugal member 22. When the centrifugal member 22 is in the deployed position, the centrifugal member 22 drives the push block 27 to move toward the output shaft body 30, so that the push block 27 is in transmission connection with the output shaft body 30. That is, the push block 27 is fixed on the input shaft body 21 and one end faces the output shaft body 30. The centrifugal member 22 changes from the initial position to the deployed position to push the push block 27, so that the input shaft body 21 moves toward the output shaft body 30, so that the push block 27 is connected with the output shaft body 30, so that the input shaft body 21 and the output shaft body 30 are connected, and the power transmission from the differential to the drive wheel can be completed.

[0034] There may be a plurality of push blocks 27 , the number of which corresponds to the number of the centrifugal members 22 , and the push blocks 27 are also evenly arranged circumferentially on the input shaft 21 .

[0035] Reference Figure 1 As shown, the output shaft body 30 is provided with a first meshing portion 31, and the end of the push block 27 away from the centrifugal member 22 is provided with a second meshing portion 28, and the first meshing portion 31 and the second meshing portion 28 are selectively meshed. Through the meshing of the first meshing portion 31 and the second meshing portion 28, the output shaft body 30 and the end of the push block 27 away from the centrifugal member 22 can be connected, and since the push block 27 is fixed on the input shaft body 21, the input shaft body 21 can be connected to the output shaft body 30.

[0036] The first meshing portion 31 and the second meshing portion 28 may be end face gear structures.

[0037] Reference Figure 1 As shown, the centrifugal member 22 includes: a centrifugal part 23, a transmission part 24 and a sliding part 25, the transmission part 24 is connected between the centrifugal part 23 and the sliding part 25, and the sliding part 25 is transmission-connected with the push block 27, so that when the centrifugal member 22 is in the unfolded position, the sliding part 25 drives the push block 27 to move toward the output shaft body 30. Specifically, the centrifugal member 22 is composed of three parts: the centrifugal part 23, the transmission part 24 and the sliding part 25. The centrifugal part 23 faces the thinning groove 11, and the centrifugal part 23 is first impacted when the thinning groove 11 is broken. The transmission part 24 is connected between the centrifugal part 23 and the sliding part 25, and the transmission part 24 transmits the force received by the centrifugal member 22 to the sliding part 25. The sliding part 25 faces the input shaft body 21, and after receiving the force of the transmission part 24, it pushes the push block 27, so that the push block 27 moves toward the output shaft body 30.

[0038] Reference Figure 1 As shown, the sliding part 25 is provided with a first inclined surface 26, and the push block 27 is provided with a second inclined surface 29, and the first inclined surface 26 and the second inclined surface 29 are arranged opposite to each other. That is, the sliding part and the push block 27 can both be wedge-shaped structures, and the first inclined surface 26 and the second inclined surface 29 have the same inclination angle, so that the first inclined surface 26 on the sliding part 25 and the second inclined surface 29 on the push block 27 are in contact smoothly and the contact area is larger than the vertical plane, and the sliding part 25 is easier to push the push block 27, which can ensure the smooth connection between the input shaft body 21 and the output shaft body 30, and improve the reliability of the second rotating shaft 20.

[0039] The first inclined surface 16 and the second inclined surface 29 are in contact with each other, so that when the centrifugal member 22 is rotated and moved outward under the force, the sliding portion 25 can push the push block 27 to move toward the output shaft 30, thereby achieving smooth power transmission.

[0040] Furthermore, a slide groove is provided on the inner wall of the input shaft body 21, and sliding protrusions are provided on both sides of the sliding part 25, and the sliding protrusions are fitted in the slide groove. There can be multiple slide grooves, which are parallel to each other and evenly arranged circumferentially on the input shaft body 21. The sliding protrusion slides along the slide groove to push the push block 27 toward the output shaft body 30. By providing the slide groove, the position of the sliding part 25 can be limited, and then the position of the centrifugal part 22 can be limited to prevent the centrifugal part 22 from being completely thrown out.

[0041] The slide groove extends in the radial direction of the input shaft body 21 , so that after the sliding boss is engaged in the slide groove, the sliding portion 25 can move in the radial direction of the input shaft body 21 .

[0042] Furthermore, a blocking structure is provided on the side of the slide groove away from the output shaft body 30 to prevent the sliding portion 25 from sliding to the side away from the output shaft body 30 so that the input shaft body 21 and the output shaft body 30 cannot be combined.

[0043] The centrifugal part 23 is a metal sphere, which has good corrosion resistance and shock resistance, a longer service life, and a heavy weight. After the thinning groove 11 breaks, it can provide greater force to the transmission part 24 and the sliding part 25.

[0044] Furthermore, a thinning groove 11 is provided on the circumferential outer side or inner side of the first rotating shaft 10 . The position of the thinning groove 11 does not affect its effect. Whether on the outer side or the inner side of the first rotating shaft 10 , the thinning groove 11 is relatively easier to break.

[0045] In this embodiment, the cross section of the thinning groove 11 may be a trapezoid. In some embodiments, the cross section of the thinning groove 11 may also be a triangle.

[0046] The vehicle according to the second embodiment of the utility model includes a drive shaft 100 .

[0047] When the first rotating shaft 10 of the driving shaft 100 is in normal use, the input shaft body 21 and the output shaft body 30 are in a disconnected state. After the first rotating shaft 10 is impacted, it breaks at the thinning groove 11. The centrifugal part 23 of the centrifugal part 22 is first subjected to the impact force, and the force is transmitted to the sliding part 25 through the transmission part 24, so that the sliding part 25 slides along the slide groove. Moreover, while the sliding part 25 slides along the slide groove, the first inclined surface 26 on the sliding part 25 and the second inclined surface 29 on the push block 27 cooperate with each other, thereby pushing the push block 27 toward the output shaft body 30. The second meshing portion 28 on the push block 27 meshes with the first meshing portion 31 on the output shaft body 30. The input shaft body 21 and the output shaft body 30 are connected in transmission, and the power is transmitted from the differential to the drive wheel, so that the user can continue to drive the vehicle to the maintenance site to avoid parking the vehicle in the wilderness or on highways.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0050] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A drive shaft, characterized in that: include: A first rotating shaft, the first rotating shaft is connected between the differential and the driving wheel, and a thinning groove is arranged in the circumference of the first rotating shaft; The second rotating shaft is arranged inside the first rotating shaft, and the second rotating shaft comprises: an input shaft body and an output shaft body, the input shaft body is drivingly connected to the differential, the output shaft body is drivingly connected to the driving wheel, a centrifugal member is arranged on the input shaft body, and the centrifugal member and the thinning groove are arranged oppositely; wherein, The centrifugal component has an initial position and an expanded position. When the centrifugal component is broken at the thinning groove, the centrifugal component is located at the expanded position and drives the input shaft body and the output shaft body to be in transmission connection.

2. The drive shaft according to claim 1, characterized in that: A push block is provided on the input shaft body, and the push block is transmission-connected with the centrifugal member. When the centrifugal member is located at the unfolded position, the centrifugal member drives the push block to move toward the output shaft body, so that the push block is transmission-connected with the output shaft body.

3. The drive shaft according to claim 2, characterized in that: The output shaft body is provided with a first meshing portion, and the end of the push block away from the centrifugal member is provided with a second meshing portion, and the first meshing portion and the second meshing portion are selectively meshed.

4. The drive shaft according to claim 2, characterized in that: The centrifugal member includes: a centrifugal part, a transmission part and a sliding part, the transmission part is connected between the centrifugal part and the sliding part, and the sliding part is transmission-connected to the push block so that when the centrifugal member is in the expanded position, the sliding part drives the push block to move toward the output shaft body.

5. The drive shaft according to claim 4, characterized in that: The sliding part is provided with a first inclined surface, the pushing block is provided with a second inclined surface, and the first inclined surface and the second inclined surface are arranged opposite to each other.

6. The drive shaft according to claim 4, characterized in that: The inner wall of the input shaft body is provided with a sliding groove, and sliding protrusions are provided on both sides of the sliding part, and the sliding protrusions are matched in the sliding groove.

7. The drive shaft according to claim 4, characterized in that: The centrifugal part is a metal sphere.

8. The drive shaft according to claim 1, characterized in that: The thinning groove is provided on the outer side and / or the inner side of the first rotating shaft in the circumferential direction.

9. The drive shaft according to claim 1, characterized in that: The cross section of the thinning groove is trapezoidal or triangular.

10. A vehicle, characterized in that: include: The drive shaft according to any one of claims 1 to 9.

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